Bump version: 4.13 → 5.0

readme: suggest adding `/opt/vc/lib/` to library search path on bullseye

.bumpversion.cfg

@@ -1,14 +1,26 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 2.1
-parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
+current_version = 5.0
+parse = (?P<major>\d+)\.(?P<minor>\d+)
 serialize = 
 	{major}.{minor}
 
-[bumpversion:file:src/config.h]
-search = VERSION "{current_version}"
-replace = VERSION "{new_version}"
+[bumpversion:file:src/libs/config.h]
+parse = (?P<major>\d+)
+serialize = {major}
+search = VERSION_MAJOR {current_version}
+replace = VERSION_MAJOR {new_version}
+
+[bumpversion:file:./src/libs/config.h]
+parse = <major>\d+\.(?P<minor>\d+)
+serialize = {minor}
+search = VERSION_MINOR {current_version}
+replace = VERSION_MINOR {new_version}
+
+[bumpversion:file:python/setup.py]
+search = version="{current_version}"
+replace = version="{new_version}"
 
 [bumpversion:file:pkg/arch/PKGBUILD]
 search = pkgver={current_version}
@@ -17,3 +29,11 @@ replace = pkgver={new_version}
 [bumpversion:file:pkg/openwrt/Makefile]
 search = PKG_VERSION:={current_version}
 replace = PKG_VERSION:={new_version}
+
+[bumpversion:file:man/ustreamer.1]
+search = "version {current_version}"
+replace = "version {new_version}"
+
+[bumpversion:file:man/ustreamer-dump.1]
+search = "version {current_version}"
+replace = "version {new_version}"

.dockerignore

@@ -4,3 +4,6 @@
 # Allow source code
 !Makefile
 !src/**
+!python/**
+!janus/**
+!man/**

.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*]
+end_of_file = lf
+indent_style = tab
+indent_size = 4
+
+[*.{py,yaml}]
+indent_style = space
+indent_size = 4

.gitattributes

@@ -0,0 +1,5 @@
+/.github/ export-ignore
+/.bumpversion.cfg export-ignore
+/.dockerignore export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore

.gitignore

@@ -2,11 +2,16 @@
 /linters/.mypy_cache/
 /pkg/arch/pkg/
 /pkg/arch/src/
-/pkg/arch/v*.tar.gz
-/pkg/arch/ustreamer-*.pkg.tar.xz
-/pkg/arch/ustreamer-*.pkg.tar.zst
-/build/
-/config.mk
-/vgcore.*
+/src/build/
+/python/build/
+/janus/build/
 /ustreamer
-/*.sock
+/ustreamer-dump
+/config.mk
+vgcore.*
+*.sock
+*.so
+*.bin
+*.pkg.tar.xz
+*.pkg.tar.zst
+*.tar.gz

Makefile

@@ -1,112 +1,93 @@
 -include config.mk
 
-PROG ?= ustreamer
 DESTDIR ?=
 PREFIX ?= /usr/local
+MANPREFIX ?= $(PREFIX)/share/man
 
 CC ?= gcc
+PY ?= python3
 CFLAGS ?= -O3
 LDFLAGS ?=
 
 RPI_VC_HEADERS ?= /opt/vc/include
 RPI_VC_LIBS ?= /opt/vc/lib
 
-BUILD ?= build
+export
 
-LINTERS_IMAGE ?= $(PROG)-linters
+_LINTERS_IMAGE ?= ustreamer-linters
 
 
 # =====
-_LIBS = -lm -ljpeg -pthread -levent -levent_pthreads -luuid
-override CFLAGS += -c -std=c11 -Wall -Wextra -D_GNU_SOURCE
-_SRCS = $(shell ls src/*.c src/http/*.c src/encoders/cpu/*.c src/encoders/hw/*.c)
-
-
 define optbool
 $(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
 endef
 
 
-ifneq ($(call optbool,$(WITH_OMX)),)
-_LIBS += -lbcm_host -lvcos -lopenmaxil -L$(RPI_VC_LIBS)
-override CFLAGS += -DWITH_OMX -DOMX_SKIP64BIT -I$(RPI_VC_HEADERS)
-_SRCS += $(shell ls src/encoders/omx/*.c)
-endif
-
-
-ifneq ($(call optbool,$(WITH_GPIO)),)
-_LIBS += -lgpiod
-override CFLAGS += -DWITH_GPIO
-_SRCS += $(shell ls src/gpio/*.c)
-endif
-
-
-WITH_PTHREAD_NP ?= 1
-ifneq ($(call optbool,$(WITH_PTHREAD_NP)),)
-override CFLAGS += -DWITH_PTHREAD_NP
-endif
-
-
-WITH_SETPROCTITLE ?= 1
-ifneq ($(call optbool,$(WITH_SETPROCTITLE)),)
-ifeq ($(shell uname -s | tr A-Z a-z),linux)
-_LIBS += -lbsd
-endif
-override CFLAGS += -DWITH_SETPROCTITLE
-endif
-
-
 # =====
-all: $(PROG)
+all:
+	+ $(MAKE) apps
+ifneq ($(call optbool,$(WITH_PYTHON)),)
+	+ $(MAKE) python
+endif
+ifneq ($(call optbool,$(WITH_JANUS)),)
+	+ $(MAKE) janus
+endif
 
 
-install: $(PROG)
-	install -Dm755 $(PROG) $(DESTDIR)$(PREFIX)/bin/$(PROG)
+apps:
+	$(MAKE) -C src
+	@ ln -sf src/ustreamer.bin ustreamer
+	@ ln -sf src/ustreamer-dump.bin ustreamer-dump
+
+
+python:
+	$(MAKE) -C python
+	@ ln -sf python/build/lib.*/*.so .
+
+
+janus:
+	$(MAKE) -C janus
+	@ ln -sf janus/*.so .
+
+
+install: all
+	$(MAKE) -C src install
+ifneq ($(call optbool,$(WITH_PYTHON)),)
+	$(MAKE) -C python install
+endif
+ifneq ($(call optbool,$(WITH_JANUS)),)
+	$(MAKE) -C janus install
+endif
+	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+	for man in $(shell ls man); do \
+		install -m644 man/$$man $(DESTDIR)$(MANPREFIX)/man1/$$man; \
+		gzip -f $(DESTDIR)$(MANPREFIX)/man1/$$man; \
+	done
 
 
 install-strip: install
-	strip $(DESTDIR)$(PREFIX)/bin/$(PROG)
-
-
-uninstall:
-	rm $(DESTDIR)$(PREFIX)/bin/$(PROG)
+	$(MAKE) -C src install-strip
 
 
 regen:
-	tools/make-jpeg-h.py src/http/data/blank.jpeg src/http/data/blank_jpeg.h BLANK
-	tools/make-html-h.py src/http/data/index.html src/http/data/index_html.h INDEX
-
-
-$(PROG): $(_SRCS:%.c=$(BUILD)/%.o)
-	$(info -- LD $@)
-	@ $(CC) $^ -o $@ $(LDFLAGS) $(_LIBS)
-	$(info ===== Build complete =====)
-	$(info == CC      = $(CC))
-	$(info == LIBS    = $(_LIBS))
-	$(info == CFLAGS  = $(CFLAGS))
-	$(info == LDFLAGS = $(LDFLAGS))
-
-
-$(BUILD)/%.o: %.c
-	$(info -- CC $<)
-	@ mkdir -p $(dir $@) || true
-	@ $(CC) $< -o $@ $(CFLAGS)
+	tools/$(MAKE)-jpeg-h.py src/ustreamer/data/blank.jpeg src/ustreamer/data/blank_jpeg.c BLANK
+	tools/$(MAKE)-html-h.py src/ustreamer/data/index.html src/ustreamer/data/index_html.c INDEX
 
 
 release:
-	make clean
-	make tox
-	make push
-	make bump V=$(V)
-	make push
-	make clean
+	$(MAKE) clean
+	$(MAKE) tox
+	$(MAKE) push
+	$(MAKE) bump V=$(V)
+	$(MAKE) push
+	$(MAKE) clean
 
 
 tox: linters
 	time docker run --rm \
 			--volume `pwd`:/src:ro \
 			--volume `pwd`/linters:/src/linters:rw \
-		-t $(LINTERS_IMAGE) bash -c " \
+		-t $(_LINTERS_IMAGE) bash -c " \
 			cd /src \
 			&& tox -q -c linters/tox.ini $(if $(E),-e $(E),-p auto) \
 		"
@@ -116,7 +97,7 @@ linters:
 	docker build \
 			$(if $(call optbool,$(NC)),--no-cache,) \
 			--rm \
-			--tag $(LINTERS_IMAGE) \
+			--tag $(_LINTERS_IMAGE) \
 		-f linters/Dockerfile linters
 
 
@@ -132,9 +113,15 @@ push:
 clean-all: linters clean
 	- docker run --rm \
 			--volume `pwd`:/src \
-		-it $(LINTERS_IMAGE) bash -c "cd src && rm -rf linters/{.tox,.mypy_cache}"
+		-it $(_LINTERS_IMAGE) bash -c "cd src && rm -rf linters/{.tox,.mypy_cache}"
+
+
 clean:
 	rm -rf pkg/arch/pkg pkg/arch/src pkg/arch/v*.tar.gz pkg/arch/ustreamer-*.pkg.tar.{xz,zst}
-	rm -rf $(PROG) $(BUILD) vgcore.* *.sock
+	rm -f ustreamer ustreamer-dump *.so
+	$(MAKE) -C src clean
+	$(MAKE) -C python clean
+	$(MAKE) -C janus clean
 
-.PHONY: linters
+
+.PHONY: python janus linters

README.md

@@ -4,28 +4,29 @@
 
 [[Русская версия]](README.ru.md)
 
-µStreamer is a lightweight and very quick server to stream [MJPG](https://en.wikipedia.org/wiki/Motion_JPEG) video from any V4L2 device to the net. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc.
+µStreamer is a lightweight and very quick server to stream [MJPEG](https://en.wikipedia.org/wiki/Motion_JPEG) video from any V4L2 device to the net. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc.
 µStreamer is a part of the [Pi-KVM](https://github.com/pikvm/pikvm) project designed to stream [VGA](https://www.amazon.com/dp/B0126O0RDC) and [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) screencast hardware data with the highest resolution and FPS possible.
 
 µStreamer is very similar to [mjpg-streamer](https://github.com/jacksonliam/mjpg-streamer) with ```input_uvc.so``` and ```output_http.so``` plugins, however, there are some major differences. The key ones are:
 
 | **Feature** | **µStreamer** | **mjpg-streamer** |
 |----------|---------------|-------------------|
-| Multithreaded JPEG encoding | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| [OpenMAX IL](https://www.khronos.org/openmaxil) hardware acceleration<br>on Raspberry Pi | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| Behavior when the device<br>is disconnected while streaming | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Shows a black screen<br>with ```NO SIGNAL``` on it<br>until reconnected | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Stops the streaming <sup>1</sup> |
-| [DV-timings](https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/dv-timings.html) support -<br>the ability to change resolution<br>on the fly by source signal | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#ffaa00](https://placehold.it/15/ffaa00/000000?text=+) Partially yes <sup>1</sup> |
-| Option to skip frames when streaming<br>static images by HTTP to save the traffic | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes <sup>2</sup> | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| Streaming via UNIX domain socket | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| Debug logs without recompiling,<br>performance statistics log,<br>access to HTTP streaming parameters | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| Option to serve files<br>with a built-in HTTP server | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#ffaa00](https://placehold.it/15/ffaa00/000000?text=+) Regular files only |
-| Signaling about the stream state<br>on GPIO using [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| Access to webcam controls (focus, servos)<br>and settings such as brightness via HTTP | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes |
-| Compatibility with mjpg-streamer's API | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | :) |
+| Multithreaded JPEG encoding | ✔ | ✘ |
+| Hardware image encoding<br>on Raspberry Pi | ✔ | ✘ |
+| Behavior when the device<br>is disconnected while streaming | ✔ Shows a black screen<br>with ```NO SIGNAL``` on it<br>until reconnected | ✘ Stops the streaming <sup>1</sup> |
+| [DV-timings](https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/dv-timings.html) support -<br>the ability to change resolution<br>on the fly by source signal | ✔ | ☹ Partially yes <sup>1</sup> |
+| Option to skip frames when streaming<br>static images by HTTP to save the traffic | ✔ <sup>2</sup> | ✘ |
+| Streaming via UNIX domain socket | ✔ | ✘ |
+| Systemd socket activation | ✔ | ✘ |
+| Debug logs without recompiling,<br>performance statistics log,<br>access to HTTP streaming parameters | ✔ | ✘ |
+| Option to serve files<br>with a built-in HTTP server | ✔ | ☹ Regular files only |
+| Signaling about the stream state<br>on GPIO using [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) | ✔ | ✘ |
+| Access to webcam controls (focus, servos)<br>and settings such as brightness via HTTP | ✘ | ✔ |
+| Compatibility with mjpg-streamer's API | ✔ | :) |
 
 Footnotes:
   * ```1``` Long before µStreamer, I made a [patch](https://github.com/jacksonliam/mjpg-streamer/pull/164) to add DV-timings support to mjpg-streamer and to keep it from hanging up no device disconnection. Alas, the patch is far from perfect and I can't guarantee it will work every time - mjpg-streamer's source code is very complicated and its structure is hard to understand. With this in mind, along with needing multithreading and JPEG hardware acceleration in the future, I decided to make my own stream server from scratch instead of supporting legacy code.
-  
+
   * ```2``` This feature allows to cut down outgoing traffic several-fold when streaming HDMI, but it increases CPU usage a little bit. The idea is that HDMI is a fully digital interface and each captured frame can be identical to the previous one byte-wise. There's no need to stream the same image over the net several times a second. With the `--drop-same-frames=20` option enabled, µStreamer will drop all the matching frames (with a limit of 20 in a row). Each new frame is matched with the previous one first by length, then using ```memcmp()```.
 
 -----
@@ -34,13 +35,13 @@ If you're going to live-stream from your backyard webcam and need to control it,
 
 -----
 # Building
-You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support, ```libjpeg8```/```libjpeg-turbo```, ```libuuid``` and ```libbsd``` (only for Linux).
+You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support, ```libjpeg9```/```libjpeg-turbo``` and ```libbsd``` (only for Linux).
 
 * Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
-* Raspbian: `sudo apt install libevent-dev libjpeg8-dev uuid-dev libbsd-dev`. Add `libraspberrypi-dev` for `WITH_OMX=1` and `libgpiod` for `WITH_GPIO=1`.
-* Debian: `sudo apt install build-essential libevent-dev libjpeg62-turbo-dev uuid-dev libbsd-dev`.
+* Raspbian: `sudo apt install libevent-dev libjpeg8-dev libbsd-dev`. Add `libgpiod-dev` for `WITH_GPIO=1` and `libsystemd-dev` for `WITH_SYSTEMD=1`.
+* Debian/Ubuntu: `sudo apt install build-essential libevent-dev libjpeg-dev libbsd-dev`.
 
-On Raspberry Pi you can build the program with OpenMAX IL. To do this pass option ```WITH_OMX=1``` to ```make```. To enable GPIO support install [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) and pass option ```WITH_GPIO=1```. If the compiler reports about a missing function ```pthread_get_name_np()``` (or similar), add option ```WITH_PTHREAD_NP=0``` (it's enabled by default). For the similar error with ```setproctitle()``` add option ```WITH_SETPROCTITLE=0```.
+To enable GPIO support install [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) and pass option ```WITH_GPIO=1```. If the compiler reports about a missing function ```pthread_get_name_np()``` (or similar), add option ```WITH_PTHREAD_NP=0``` (it's enabled by default). For the similar error with ```setproctitle()``` add option ```WITH_SETPROCTITLE=0```.
 
 ```
 $ git clone --depth=1 https://github.com/pikvm/ustreamer
@@ -49,7 +50,8 @@ $ make
 $ ./ustreamer --help
 ```
 
-AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer. It should compile automatically with OpenMAX IL on Raspberry Pi, if the corresponding headers are present in ```/opt/vc/include```.  
+AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer.
+
 FreeBSD port: https://www.freshports.org/multimedia/ustreamer.
 
 -----
@@ -65,8 +67,8 @@ The recommended way of running µStreamer with [Auvidea B101](https://www.raspbe
 ```bash
 $ ./ustreamer \
     --format=uyvy \ # Device input format
-    --encoder=omx \ # Hardware encoding with OpenMAX
-    --workers=3 \ # Maximum workers for OpenMAX
+    --encoder=m2m-image \ # Hardware encoding on V4L2 M2M driver
+    --workers=3 \ # Workers number
     --persistent \ # Don't re-initialize device on timeout (for example when HDMI cable was disconnected)
     --dv-timings \ # Use DV-timings
     --drop-same-frames=30 # Save the traffic
@@ -76,14 +78,56 @@ $ ./ustreamer \
 
 You can always view the full list of options with ```ustreamer --help```.
 
+-----
+# Raspberry Pi Camera Example
+Example usage for the Raspberry Pi v1 camera:
+```bash
+$ sudo modprobe bcm2835-v4l2
+$ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
+```
+
+:exclamation: Please note that newer camera models have a different maximum resolution. You can see the supported resolutions at the [PiCamera documentation](https://picamera.readthedocs.io/en/release-1.13/fov.html#sensor-modes).
+
+:exclamation: If you get a poor framerate, it could be that the camera is switched to photo mode, which produces a low framerate (but a higher quality picture). This is because `bcm2835-v4l2` switches to photo mode at resolutions higher than `1280x720`. To work around this, pass the `max_video_width` and `max_video_height` module parameters like so:
+
+```bash
+$ modprobe bcm2835-v4l2 max_video_width=2592 max_video_height=1944
+```
+
+-----
+# Integrations
+
+## Nginx
+When uStreamer is behind an Nginx proxy, it's buffering behavior introduces latency into the video stream. It's possible to disable Nginx's buffering to eliminate the additional latency:
+
+```nginx
+location /stream {
+    postpone_output 0;
+    proxy_buffering off;
+    proxy_ignore_headers X-Accel-Buffering;
+    proxy_pass http://ustreamer;
+}
+```
+
+-----
+# Tips & tricks for v4l2
+v4l2 utilities provide the tools to manage USB webcam setting and information. Scripts can be use to make adjustments and run manually or with cron. Running in cron for example to change the exposure settings at certain times of day. The package is available in all Linux distributions and is usually called `v4l-utils`.
+
+* List of available video devices: `v4l2-ctl --list-devices`.
+* List available control settings: `v4l2-ctl -d /dev/video0 --list-ctrls`.
+* List available video formats: `v4l2-ctl -d /dev/video0 --list-formats-ext`.
+* Read the current setting: `v4l2-ctl -d /dev/video0 --get-ctrl=exposure_auto`.
+* Change the setting value: `v4l2-ctl -d /dev/video0 --set-ctrl=exposure_auto=1`.
+
+[Here](https://www.kurokesu.com/main/2016/01/16/manual-usb-camera-settings-in-linux/) you can find more examples. Documentation is available in [`man v4l2-ctl`](https://www.mankier.com/1/v4l2-ctl).
+
 -----
 # See also
 * [Running uStreamer via systemd service](https://github.com/pikvm/ustreamer/issues/16).
-* [uStreamer Ansible Role](https://github.com/mtlynch/ansible-role-ustreamer): Use [Ansible](https://docs.ansible.com/ansible/latest/index.html) to compile uStreamer and install it as a systemd service automatically.
 
 -----
 # License
-Copyright (C) 2018 by Maxim Devaev mdevaev@gmail.com
+Copyright (C) 2018-2022 by Maxim Devaev mdevaev@gmail.com
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

README.ru.md

@@ -5,27 +5,28 @@
 [[English version]](README.md)
 
 
-µStreamer - это маленький и очень быстрый сервер, который позволяет организовать трансляцию видео в формате [MJPG](https://en.wikipedia.org/wiki/Motion_JPEG) с любого устройства V4L2 в сеть. Этот формат нативно поддерживается всеми современными браузерами и большинством приложений для просмотра видео (mplayer, VLC и так далее). µStreamer был разработан в рамках проекта [Pi-KVM](https://github.com/pikvm/pikvm) специально для стриминга с устройств видеозахвата [VGA](https://www.amazon.com/dp/B0126O0RDC) и [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) с максимально возможным разрешением и FPS, которые только позволяет железо.
+µStreamer - это маленький и очень быстрый сервер, который позволяет организовать трансляцию видео в формате [MJPEG](https://en.wikipedia.org/wiki/Motion_JPEG) с любого устройства V4L2 в сеть. Этот формат нативно поддерживается всеми современными браузерами и большинством приложений для просмотра видео (mplayer, VLC и так далее). µStreamer был разработан в рамках проекта [Pi-KVM](https://github.com/pikvm/pikvm) специально для стриминга с устройств видеозахвата [VGA](https://www.amazon.com/dp/B0126O0RDC) и [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) с максимально возможным разрешением и FPS, которые только позволяет железо.
 
 Функционально µStreamer очень похож на [mjpg-streamer](https://github.com/jacksonliam/mjpg-streamer) при использовании им плагинов ```input_uvc.so``` и ```output_http.so```, однако имеет ряд серьезных отличий. Основные приведены в этой таблице:
 
 | **Фича** | **µStreamer** | **mjpg-streamer** |
 |----------|---------------|-------------------|
-| Многопоточное кодирование JPEG | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
-| Аппаратное кодирование с помощью [OpenMAX IL](https://www.khronos.org/openmaxil) на Raspberry Pi | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
-| Поведение при физическом отключении<br>устройства от сервера во время работы | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Транслирует черный экран<br>с надписью ```NO SIGNAL```,<br>пока устройство не будет подключено снова | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Прерывает трансляцию <sup>1</sup> |
-| Поддержка [DV-таймингов](https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/dv-timings.html) - возможности<br>изменения  параметров разрешения<br>трансляции на лету по сигналу<br>источника (устройства видеозахвата) | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#ffaa00](https://placehold.it/15/ffaa00/000000?text=+) Условно есть <sup>1</sup> |
-| Возможность пропуска фреймов при передаче<br>статического изображения по HTTP<br>для экономии трафика | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть <sup>2</sup> | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
-| Стрим через UNIX domain socket | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
-| Дебаг-логи без перекомпиляции,<br>логгирование статистики производительности,<br>возможность получения параметров<br>трансляции по HTTP | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
-| Возможность сервить файлы встроенным<br>HTTP-сервером  | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#ffaa00](https://placehold.it/15/ffaa00/000000?text=+) Нет каталогов |
-| Вывод сигналов о состоянии стрима на GPIO<br>с помощью [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
-| Поддержка контролов веб-камер (фокус,<br> движение сервами) и всяких настроек,<br> типа яркости, через HTTP | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть |
-| Совместимость с API mjpg-streamer'а | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | :) |
+| Многопоточное кодирование JPEG | ✔ | ✘ |
+| Аппаратное кодирование на Raspberry Pi | ✔ | ✘ |
+| Поведение при физическом отключении<br>устройства от сервера во время работы | ✔ Транслирует черный экран<br>с надписью ```NO SIGNAL```,<br>пока устройство не будет подключено снова | ✘ Прерывает трансляцию <sup>1</sup> |
+| Поддержка [DV-таймингов](https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/dv-timings.html) - возможности<br>изменения  параметров разрешения<br>трансляции на лету по сигналу<br>источника (устройства видеозахвата) | ✔ | ☹ Условно есть <sup>1</sup> |
+| Возможность пропуска фреймов при передаче<br>статического изображения по HTTP<br>для экономии трафика | ✔ <sup>2</sup> | ✘ |
+| Стрим через UNIX domain socket | ✔ | ✘ |
+| Systemd socket activation | ✔ | ✘ |
+| Дебаг-логи без перекомпиляции,<br>логгирование статистики производительности,<br>возможность получения параметров<br>трансляции по HTTP | ✔ | ✘ |
+| Возможность сервить файлы встроенным<br>HTTP-сервером  | ✔ | ☹ Нет каталогов |
+| Вывод сигналов о состоянии стрима на GPIO<br>с помощью [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) | ✔ | ✘ |
+| Поддержка контролов веб-камер (фокус,<br> движение сервами) и всяких настроек,<br> типа яркости, через HTTP | ✘ | ✔ |
+| Совместимость с API mjpg-streamer'а | ✔ | :) |
 
 Сносочки:
   * ```1``` Еще до написания µStreamer, я запилил [патч](https://github.com/jacksonliam/mjpg-streamer/pull/164), добавляющий в mjpg-streamer поддержку DV-таймингов и предотвращающий его зависание при отключении устройства. Однако патч, увы, далек от совершенства и я не гарантирую его стопроцентную работоспособность, поскольку код mjpg-streamer чрезвычайно запутан и очень плохо структурирован. Учитывая это, а также то, что в дальнейшем мне потребовались многопоточность и аппаратное кодирование JPEG, было принято решение написать свой стрим-сервер с нуля, чтобы не тратить силы на поддержку лишнего легаси.
-  
+
   * ```2``` Это фича позволяет в несколько раз снизить объем исходящего трафика при трансляции HDMI, однако немного увеличивает загрузку процессора. Суть в том, что HDMI - полностью цифровой интерфейс, и новый захваченный фрейм может быть идентичен предыдущему в точности до байта. В этом случае нет нужды передавать одну и ту же картинку по сети несколько раз в секунду. При использовании опции `--drop-same-frames=20`, µStreamer будет дропать все одинаковые фреймы, но не более 20 подряд. Новый фрейм сравнивается с предыдущим сначала по длине, а затем помощью ```memcmp()```.
 
 -----
@@ -34,13 +35,13 @@
 
 -----
 # Сборка
-Для сборки вам понадобятся ```make```, ```gcc```, ```libevent``` с поддержкой ```pthreads```, ```libjpeg8```/```libjpeg-turbo```, ```libuuid``` и ```libbsd``` (только для Linux).
+Для сборки вам понадобятся ```make```, ```gcc```, ```libevent``` с поддержкой ```pthreads```, ```libjpeg8```/```libjpeg-turbo``` и ```libbsd``` (только для Linux).
 
 * Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
-* Raspbian: `sudo apt install libevent-dev libjpeg8-dev uuid-dev libbsd-dev`.  Добавьте `libraspberrypi-dev` для сборки с `WITH_OMX=1` и `libgpiod` для `WITH_GPIO=1`.
-* Debian: `sudo apt install build-essential libevent-dev libjpeg62-turbo-dev uuid-dev libbsd-dev`.
+* Raspbian: `sudo apt install libevent-dev libjpeg8-dev libbsd-dev`.  Добавьте `libgpiod` для `WITH_GPIO=1` и `libsystemd-dev` для `WITH_SYSTEMD=1`.
+* Debian/Ubuntu: `sudo apt install build-essential libevent-dev libjpeg-dev libbsd-dev`.
 
-На Raspberry Pi программу можно собрать с поддержкой OpenMAX IL. Для этого передайте ```make``` параметр ```WITH_OMX=1```. Для включения сборки с поддержкой GPIO установите [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) и добавьте параметр ```WITH_GPIO=1```. Если при сборке компилятор ругается на отсутствие функции ```pthread_get_name_np()``` или другой подобной, добавьте параметр ```WITH_PTHREAD_NP=0``` (по умолчанию он включен). При аналогичной ошибке с функцией ```setproctitle()``` добавьте параметр ```WITH_SETPROCTITLE=0```.
+Для включения сборки с поддержкой GPIO установите [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) и добавьте параметр ```WITH_GPIO=1```. Если при сборке компилятор ругается на отсутствие функции ```pthread_get_name_np()``` или другой подобной, добавьте параметр ```WITH_PTHREAD_NP=0``` (по умолчанию он включен). При аналогичной ошибке с функцией ```setproctitle()``` добавьте параметр ```WITH_SETPROCTITLE=0```.
 
 ```
 $ git clone --depth=1 https://github.com/pikvm/ustreamer
@@ -49,7 +50,8 @@ $ make
 $ ./ustreamer --help
 ```
 
-Для Arch Linux в AUR есть готовый пакет: https://aur.archlinux.org/packages/ustreamer. На Raspberry Pi програма автоматически собирается с поддержкой OpenMAX IL, если обнаружит нужные хедеры в ```/opt/vc/include```.  
+Для Arch Linux в AUR есть готовый пакет: https://aur.archlinux.org/packages/ustreamer.
+
 Порт для FreeBSD: https://www.freshports.org/multimedia/ustreamer.
 
 -----
@@ -65,8 +67,8 @@ $ ./ustreamer --help
 ```bash
 $ ./ustreamer \
     --format=uyvy \ # Настройка входного формата устройства
-    --encoder=omx \ # Использование аппаратного кодирования с помощью OpenMAX
-    --workers=3 \ # Максимум воркеров для OpenMAX
+    --encoder=m2m-image \ # Аппаратное кодирование с помощью драйвера V4L2 M2M
+    --workers=3 \ # Максимум воркеров
     --persistent \ # Не переинициализировать устройство при таймауте (например, когда был отключен HDMI-кабель)
     --dv-timings \ # Включение DV-таймингов
     --drop-same-frames=30 # Экономим трафик
@@ -76,14 +78,56 @@ $ ./ustreamer \
 
 За полным списком опций обращайтесь ко встроенной справке: ```ustreamer --help```.
 
+-----
+# Камера Raspberry Pi
+Пример использования камеры Raspberry Pi v1:
+```bash
+$ sudo modprobe bcm2835-v4l2
+$ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
+```
+
+:exclamation: Обратите внимание что боле новые модели камеры имеют другое максимальное разрешение. Список поддерживаемых разрешений можно найти в [документации PiCamera](https://picamera.readthedocs.io/en/release-1.13/fov.html#sensor-modes).
+
+:exclamation: Если камера выдает низкий фреймрейт, возможно что она работает в фото-режиме, где производит более низкий фпс, но более качественную кратинку. Это происходит потому что `bcm2835-v4l2` переключает камеру в фото-режим на разрешениях выше `1280x720`. Чтобы обойти это, передайте параметры `max_video_width` и `max_video_height` при загрузке модуля, например:
+
+```bash
+$ modprobe bcm2835-v4l2 max_video_width=2592 max_video_height=1944
+```
+
+-----
+# Интеграция
+
+## Nginx
+Если uStreamer находится на Nginx, то последний будет буферизировать поток и создавать дополнительную задержку в стриме. Чтобы задержки не было, буферизацию можно отключить:
+
+```nginx
+location /stream {
+    postpone_output 0;
+    proxy_buffering off;
+    proxy_ignore_headers X-Accel-Buffering;
+    proxy_pass http://ustreamer;
+}
+```
+
+-----
+# Утилиты V4L2
+V4L2 предоставляет ряд официальных утилит для управления USB-вебкамерами и получения информации об устройствах. С их помощью можно писать всякие настроечные скрипты и запускать их по крону, если, например, вам требуется изменять настройки экспозиции в зависимости от времени суток. Пакет с этими утилитами доступен на всех дистрибутивах Linux и обычно называется `v4l-utils`.
+
+* Вывести список видеоустройств: `v4l2-ctl --list-devices`.
+* Вывести список доступных контролов устройства: `v4l2-ctl -d /dev/video0 --list-ctrls`.
+* Вывести список доступных форматов видео: `v4l2-ctl -d /dev/video0 --list-formats-ext`.
+* Показать текущее значение контрола: `v4l2-ctl -d /dev/video0 --get-ctrl=exposure_auto`.
+* Изменить значение контрола: `v4l2-ctl -d /dev/video0 --set-ctrl=exposure_auto=1`.
+
+Больше примеров вы можете найти [здесь](https://www.kurokesu.com/main/2016/01/16/manual-usb-camera-settings-in-linux/), а документацию в [`man v4l2-ctl`](https://www.mankier.com/1/v4l2-ctl).
+
 -----
 # Смотрите также
 * [Запуск с помощью systemd-сервиса](https://github.com/pikvm/ustreamer/issues/16).
-* [uStreamer Ansible Role](https://github.com/mtlynch/ansible-role-ustreamer): Использование [Ansible](https://docs.ansible.com/ansible/latest/index.html) для сборки и установки стримера как systemd-сервиса.
 
 -----
 # Лицензия
-Copyright (C) 2018 by Maxim Devaev mdevaev@gmail.com
+Copyright (C) 2018-2022 by Maxim Devaev mdevaev@gmail.com
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

janus/Makefile

@@ -0,0 +1,54 @@
+DESTDIR ?=
+PREFIX ?= /usr/local
+
+CC ?= gcc
+CFLAGS ?= -O3
+LDFLAGS ?=
+
+
+# =====
+_PLUGIN = libjanus_ustreamer.so
+
+_CFLAGS = -fPIC -MD -c -std=c11 -Wall -Wextra -D_GNU_SOURCE $(shell pkg-config --cflags glib-2.0) $(CFLAGS)
+_LDFLAGS = -shared -lm -pthread -lrt -ljansson $(shell pkg-config --libs glib-2.0) $(LDFLAGS)
+
+_SRCS = $(shell ls src/*.c)
+
+_BUILD = build
+
+
+define optbool
+$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
+endef
+
+
+WITH_PTHREAD_NP ?= 1
+ifneq ($(call optbool,$(WITH_PTHREAD_NP)),)
+override _CFLAGS += -DWITH_PTHREAD_NP
+endif
+
+
+# =====
+$(_PLUGIN): $(_SRCS:%.c=$(_BUILD)/%.o)
+	$(info == SO $@)
+	@ $(CC) $^ -o $@ $(_LDFLAGS)
+
+
+$(_BUILD)/%.o: %.c
+	$(info -- CC $<)
+	@ mkdir -p $(dir $@) || true
+	@ $(CC) $< -o $@ $(_CFLAGS)
+
+
+
+install: $(_PLUGIN)
+	mkdir -p $(DESTDIR)$(PREFIX)/lib/ustreamer/janus
+	install -m755 $(_PLUGIN) $(DESTDIR)$(PREFIX)/lib/ustreamer/janus/$(PLUGIN)
+
+
+clean:
+	rm -rf $(_PLUGIN) $(_BUILD)
+
+
+_OBJS = $(_SRCS:%.c=$(_BUILD)/%.o)
+-include $(_OBJS:%.o=%.d)

janus/src/base64.c

@@ -0,0 +1 @@
+../../src/libs/base64.c

janus/src/base64.h

@@ -0,0 +1 @@
+../../src/libs/base64.h

janus/src/config.h

@@ -0,0 +1 @@
+../../src/libs/config.h

janus/src/frame.c

@@ -0,0 +1 @@
+../../src/libs/frame.c

janus/src/frame.h

@@ -0,0 +1 @@
+../../src/libs/frame.h

janus/src/list.h

@@ -0,0 +1 @@
+../../src/libs/list.h

janus/src/memsinksh.h

@@ -0,0 +1 @@
+../../src/libs/memsinksh.h

janus/src/plugin.c

@@ -0,0 +1,522 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdatomic.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <assert.h>
+
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <linux/videodev2.h>
+
+#include <pthread.h>
+#include <jansson.h>
+#include <janus/config.h>
+#include <janus/plugins/plugin.h>
+
+#include "config.h"
+#include "tools.h"
+#include "threading.h"
+#include "list.h"
+#include "memsinksh.h"
+
+#include "rtp.h"
+
+
+static int _plugin_init(janus_callbacks *gw, const char *config_file_path);
+static void _plugin_destroy(void);
+
+static void _plugin_create_session(janus_plugin_session *session, int *error);
+static void _plugin_destroy_session(janus_plugin_session *session, int *error);
+static json_t *_plugin_query_session(janus_plugin_session *session);
+
+static void _plugin_setup_media(janus_plugin_session *session);
+static void _plugin_hangup_media(janus_plugin_session *session);
+
+static struct janus_plugin_result *_plugin_handle_message(
+	janus_plugin_session *session, char *transaction, json_t *msg, json_t *jsep);
+
+static int _plugin_get_api_compatibility(void);
+static int _plugin_get_version(void);
+static const char *_plugin_get_version_string(void);
+static const char *_plugin_get_description(void);
+static const char *_plugin_get_name(void);
+static const char *_plugin_get_author(void);
+static const char *_plugin_get_package(void);
+
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Woverride-init"
+static janus_plugin _plugin = JANUS_PLUGIN_INIT(
+	.init = _plugin_init,
+	.destroy = _plugin_destroy,
+
+	.create_session = _plugin_create_session,
+	.destroy_session = _plugin_destroy_session,
+	.query_session = _plugin_query_session,
+
+	.setup_media = _plugin_setup_media,
+	.hangup_media = _plugin_hangup_media,
+
+	.handle_message = _plugin_handle_message,
+
+	.get_api_compatibility = _plugin_get_api_compatibility,
+	.get_version = _plugin_get_version,
+	.get_version_string = _plugin_get_version_string,
+	.get_description = _plugin_get_description,
+	.get_name = _plugin_get_name,
+	.get_author = _plugin_get_author,
+	.get_package = _plugin_get_package,
+);
+#pragma GCC diagnostic pop
+
+janus_plugin *create(void) { // cppcheck-suppress unusedFunction
+	return &_plugin;
+}
+
+
+typedef struct _client_sx {
+	janus_plugin_session *session;
+	bool transmit;
+
+	LIST_STRUCT(struct _client_sx);
+} _client_s;
+
+
+static char				*_g_memsink_obj = NULL;
+const long double		_g_wait_timeout = 1;
+const long double		_g_lock_timeout = 1;
+const useconds_t		_g_lock_polling = 1000;
+const useconds_t		_g_watchers_polling = 100000;
+
+static _client_s		*_g_clients = NULL;
+static janus_callbacks	*_g_gw = NULL;
+static rtp_s			*_g_rtp = NULL;
+
+static pthread_t		_g_tid;
+static pthread_mutex_t	_g_lock = PTHREAD_MUTEX_INITIALIZER;
+static atomic_bool		_g_ready = ATOMIC_VAR_INIT(false);
+static atomic_bool		_g_stop = ATOMIC_VAR_INIT(false);
+static atomic_bool		_g_has_watchers = ATOMIC_VAR_INIT(false);
+
+
+#define JLOG_INFO(_msg, ...)	JANUS_LOG(LOG_INFO, "== %s -- " _msg "\n", _plugin_get_name(), ##__VA_ARGS__)
+#define JLOG_WARN(_msg, ...)	JANUS_LOG(LOG_WARN, "== %s -- " _msg "\n", _plugin_get_name(), ##__VA_ARGS__)
+#define JLOG_ERROR(_msg, ...)	JANUS_LOG(LOG_ERR, "== %s -- " _msg "\n", _plugin_get_name(), ##__VA_ARGS__)
+
+#define JLOG_PERROR(_msg, ...) { \
+		char _perror_buf[1024] = {0}; \
+		char *_perror_ptr = errno_to_string(errno, _perror_buf, 1023); \
+		JANUS_LOG(LOG_ERR, "[%s] " _msg ": %s\n", _plugin_get_name(), ##__VA_ARGS__, _perror_ptr); \
+	}
+
+#define LOCK			A_MUTEX_LOCK(&_g_lock)
+#define UNLOCK			A_MUTEX_UNLOCK(&_g_lock)
+#define READY			atomic_load(&_g_ready)
+#define STOP			atomic_load(&_g_stop)
+#define HAS_WATCHERS	atomic_load(&_g_has_watchers)
+
+
+static void _relay_rtp_clients(const uint8_t *datagram, size_t size) {
+	janus_plugin_rtp packet = {
+		.video = true,
+		.buffer = (char *)datagram,
+		.length = size,
+	};
+	janus_plugin_rtp_extensions_reset(&packet.extensions);
+	LIST_ITERATE(_g_clients, client, {
+		if (client->transmit) {
+			_g_gw->relay_rtp(client->session, &packet);
+		}
+	});
+}
+
+static int _wait_frame(int fd, memsink_shared_s* mem, uint64_t last_id) {
+	long double deadline_ts = get_now_monotonic() + _g_wait_timeout;
+	long double now;
+	do {
+		int retval = flock_timedwait_monotonic(fd, _g_lock_timeout);
+		now = get_now_monotonic();
+		if (retval < 0 && errno != EWOULDBLOCK) {
+			JLOG_PERROR("Can't lock memsink");
+			return -1;
+		} else if (retval == 0) {
+			if (mem->magic == MEMSINK_MAGIC && mem->version == MEMSINK_VERSION && mem->id != last_id) {
+				return 0;
+			}
+			if (flock(fd, LOCK_UN) < 0) {
+				JLOG_PERROR("Can't unlock memsink");
+				return -1;
+			}
+		}
+		usleep(_g_lock_polling);
+	} while (now < deadline_ts);
+	return -2;
+}
+
+static int _get_frame(int fd, memsink_shared_s *mem, frame_s *frame, uint64_t *frame_id) {
+	frame_set_data(frame, mem->data, mem->used);
+	FRAME_COPY_META(mem, frame);
+	*frame_id = mem->id;
+	mem->last_client_ts = get_now_monotonic();
+	int retval = 0;
+	if (frame->format != V4L2_PIX_FMT_H264) {
+		JLOG_ERROR("Got non-H264 frame from memsink");
+		retval = -1;
+	}
+	if (flock(fd, LOCK_UN) < 0) {
+		JLOG_PERROR("Can't unlock memsink");
+		retval = -1;
+	}
+	return retval;
+}
+
+static void *_clients_thread(UNUSED void *arg) {
+	A_THREAD_RENAME("us_clients");
+	atomic_store(&_g_ready, true);
+
+	frame_s *frame = frame_init();
+	uint64_t frame_id = 0;
+
+	unsigned error_reported = 0;
+
+#	define IF_NOT_REPORTED(_error, ...) { \
+			if (error_reported != _error) { __VA_ARGS__; error_reported = _error; } \
+		}
+
+	while (!STOP) {
+		if (!HAS_WATCHERS) {
+			IF_NOT_REPORTED(1, {
+				JLOG_INFO("No active watchers, memsink disconnected");
+			});
+			usleep(_g_watchers_polling);
+			continue;
+		}
+
+		int fd = -1;
+		memsink_shared_s *mem = NULL;
+
+		if ((fd = shm_open(_g_memsink_obj, O_RDWR, 0)) <= 0) {
+			IF_NOT_REPORTED(2, {
+				JLOG_PERROR("Can't open memsink");
+			});
+			goto close_memsink;
+		}
+
+		if ((mem = memsink_shared_map(fd)) == NULL) {
+			IF_NOT_REPORTED(3, {
+				JLOG_PERROR("Can't map memsink");
+			});
+			goto close_memsink;
+		}
+
+		error_reported = 0;
+
+		JLOG_INFO("Memsink opened; reading frames ...");
+		while (!STOP && HAS_WATCHERS) {
+			int result = _wait_frame(fd, mem, frame_id);
+			if (result == 0) {
+				if (_get_frame(fd, mem, frame, &frame_id) != 0) {
+					goto close_memsink;
+				}
+				LOCK;
+				rtp_wrap_h264(_g_rtp, frame, _relay_rtp_clients);
+				UNLOCK;
+			} else if (result == -1) {
+				goto close_memsink;
+			}
+		}
+
+		close_memsink:
+			if (mem != NULL) {
+				JLOG_INFO("Memsink closed");
+				memsink_shared_unmap(mem);
+				mem = NULL;
+			}
+			if (fd > 0) {
+				close(fd);
+				fd = -1;
+			}
+			sleep(1); // error_delay
+	}
+
+#	undef IF_NOT_REPORTED
+
+	frame_destroy(frame);
+	return NULL;
+}
+
+static int _read_config(const char *config_dir_path) {
+	char *config_file_path;
+	janus_config *config = NULL;
+
+	A_ASPRINTF(config_file_path, "%s/%s.jcfg", config_dir_path, _plugin_get_package());
+	JLOG_INFO("Reading config file '%s' ...", config_file_path);
+
+	config = janus_config_parse(config_file_path);
+	if (config == NULL) {
+		JLOG_ERROR("Can't read config");
+		goto error;
+	}
+	janus_config_print(config);
+
+	janus_config_category *config_memsink = janus_config_get_create(config, NULL, janus_config_type_category, "memsink");
+	janus_config_item *config_memsink_obj = janus_config_get(config, config_memsink, janus_config_type_item, "object");
+	if (config_memsink_obj == NULL || config_memsink_obj->value == NULL || config_memsink_obj->value[0] == '\0') {
+		JLOG_ERROR("Missing config value: memsink.object");
+		goto error;
+	}
+	_g_memsink_obj = strdup(config_memsink_obj->value);
+
+	int retval = 0;
+	goto ok;
+	error:
+		retval = -1;
+	ok:
+		if (config) {
+			janus_config_destroy(config);
+		}
+		free(config_file_path);
+		return retval;
+}
+
+static int _plugin_init(janus_callbacks *gw, const char *config_dir_path) {
+	// https://groups.google.com/g/meetecho-janus/c/xoWIQfaoJm8
+	// sysctl -w net.core.rmem_default=500000 
+	// sysctl -w net.core.wmem_default=500000 
+	// sysctl -w net.core.rmem_max=1000000 
+	// sysctl -w net.core.wmem_max=1000000
+
+	JLOG_INFO("Initializing plugin ...");
+	assert(!READY);
+	assert(!STOP);
+	if (gw == NULL || config_dir_path == NULL || _read_config(config_dir_path) < 0) {
+		return -1;
+	}
+	_g_gw = gw;
+	_g_rtp = rtp_init();
+	A_THREAD_CREATE(&_g_tid, _clients_thread, NULL);
+	return 0;
+}
+
+static void _plugin_destroy(void) {
+	JLOG_INFO("Destroying plugin ...");
+	atomic_store(&_g_stop, true);
+	if (READY) {
+		A_THREAD_JOIN(_g_tid);
+	}
+
+	LIST_ITERATE(_g_clients, client, {
+		LIST_REMOVE(_g_clients, client);
+		free(client);
+	});
+	_g_clients = NULL;
+
+	rtp_destroy(_g_rtp);
+	_g_rtp = NULL;
+
+	_g_gw = NULL;
+
+	if (_g_memsink_obj) {
+		free(_g_memsink_obj);
+		_g_memsink_obj = NULL;
+	}
+}
+
+#define IF_DISABLED(...) { if (!READY || STOP) { __VA_ARGS__ } }
+
+static void _plugin_create_session(janus_plugin_session *session, int *error) {
+	IF_DISABLED({ *error = -1; return; });
+	LOCK;
+	JLOG_INFO("Creating session %p ...", session);
+	_client_s *client;
+	A_CALLOC(client, 1);
+	client->session = session;
+	client->transmit = true;
+	LIST_APPEND(_g_clients, client);
+	atomic_store(&_g_has_watchers, true);
+	UNLOCK;
+}
+
+static void _plugin_destroy_session(janus_plugin_session* session, int *error) {
+	IF_DISABLED({ *error = -1; return; });
+	LOCK;
+	bool found = false;
+	bool has_watchers = false;
+	LIST_ITERATE(_g_clients, client, {
+		if (client->session == session) {
+			JLOG_INFO("Removing session %p ...", session);
+			LIST_REMOVE(_g_clients, client);
+			free(client);
+			found = true;
+		} else {
+			has_watchers = (has_watchers || client->transmit);
+		}
+	});
+	if (!found) {
+		JLOG_WARN("No session %p", session);
+		*error = -2;
+	}
+	atomic_store(&_g_has_watchers, has_watchers);
+	UNLOCK;
+}
+
+static json_t *_plugin_query_session(janus_plugin_session *session) {
+	IF_DISABLED({ return NULL; });
+	json_t *info = NULL;
+	LOCK;
+	LIST_ITERATE(_g_clients, client, {
+		if (client->session == session) {
+			info = json_string("session_found");
+			break;
+		}
+	});
+	UNLOCK;
+	return info;
+}
+
+static void _set_transmit(janus_plugin_session *session, UNUSED const char *msg, bool transmit) {
+	IF_DISABLED({ return; });
+	LOCK;
+	bool found = false;
+	bool has_watchers = false;
+	LIST_ITERATE(_g_clients, client, {
+		if (client->session == session) {
+			client->transmit = transmit;
+			//JLOG_INFO("%s session %p", msg, session);
+			found = true;
+		}
+		has_watchers = (has_watchers || client->transmit);
+	});
+	if (!found) {
+		JLOG_WARN("No session %p", session);
+	}
+	atomic_store(&_g_has_watchers, has_watchers);
+	UNLOCK;
+}
+
+#undef IF_DISABLED
+
+static void _plugin_setup_media(janus_plugin_session *session) { _set_transmit(session, "Unmuted", true); }
+static void _plugin_hangup_media(janus_plugin_session *session) { _set_transmit(session, "Muted", false); }
+
+static struct janus_plugin_result *_plugin_handle_message(
+	janus_plugin_session *session, char *transaction, json_t *msg, json_t *jsep) {
+
+	assert(transaction != NULL);
+
+#	define FREE_MSG_JSEP { \
+			if (msg) json_decref(msg); \
+			if (jsep) json_decref(jsep); \
+		}
+
+	if (session == NULL || msg == NULL) {
+		free(transaction);
+		FREE_MSG_JSEP;
+		return janus_plugin_result_new(JANUS_PLUGIN_ERROR, (msg ? "No session" : "No message"), NULL);
+	}
+
+#	define PUSH_ERROR(_error, _reason) { \
+			/*JLOG_ERROR("Message error in session %p: %s", session, _reason);*/ \
+			json_t *_event = json_object(); \
+			json_object_set_new(_event, "ustreamer", json_string("event")); \
+			json_object_set_new(_event, "error_code", json_integer(_error)); \
+			json_object_set_new(_event, "error", json_string(_reason)); \
+			_g_gw->push_event(session, &_plugin, transaction, _event, NULL); \
+			json_decref(_event); \
+		}
+
+	json_t *request_obj = json_object_get(msg, "request");
+	if (request_obj == NULL) {
+		PUSH_ERROR(400, "Request missing");
+		goto ok_wait;
+	}
+
+	const char *request_str = json_string_value(request_obj);
+	if (!request_str) {
+		PUSH_ERROR(400, "Request not a string");
+		goto ok_wait;
+	}
+	//JLOG_INFO("Message: %s", request_str);
+
+#	define PUSH_STATUS(_status, _jsep) { \
+			json_t *_event = json_object(); \
+			json_object_set_new(_event, "ustreamer", json_string("event")); \
+			json_t *_result = json_object(); \
+			json_object_set_new(_result, "status", json_string(_status)); \
+			json_object_set_new(_event, "result", _result); \
+			_g_gw->push_event(session, &_plugin, transaction, _event, _jsep); \
+			json_decref(_event); \
+		}
+
+	if (!strcmp(request_str, "start")) {
+		PUSH_STATUS("started", NULL);
+
+	} else if (!strcmp(request_str, "stop")) {
+		PUSH_STATUS("stopped", NULL);
+
+	} else if (!strcmp(request_str, "watch")) {
+		char *sdp = rtp_make_sdp(_g_rtp);
+		if (sdp == NULL) {
+			PUSH_ERROR(503, "Haven't received SPS/PPS from memsink yet");
+			goto ok_wait;
+		}
+		//JLOG_INFO("SDP generated:\n%s", sdp);
+		json_t *offer_jsep = json_pack("{ssss}", "type", "offer", "sdp", sdp);
+		free(sdp);
+		PUSH_STATUS("started", offer_jsep);
+		json_decref(offer_jsep);
+
+	} else {
+		PUSH_ERROR(405, "Not implemented");
+	}
+
+	ok_wait:
+		FREE_MSG_JSEP;
+		return janus_plugin_result_new(JANUS_PLUGIN_OK_WAIT, NULL, NULL);
+
+#	undef PUSH_ERROR
+#	undef FREE_MSG_JSEP
+}
+
+static int _plugin_get_api_compatibility(void)		{ return JANUS_PLUGIN_API_VERSION; }
+static int _plugin_get_version(void)				{ return VERSION_U; }
+static const char *_plugin_get_version_string(void)	{ return VERSION; }
+static const char *_plugin_get_description(void)	{ return "Pi-KVM uStreamer Janus plugin for H.264 video"; }
+static const char *_plugin_get_name(void)			{ return "ustreamer"; }
+static const char *_plugin_get_author(void)			{ return "Maxim Devaev <mdevaev@gmail.com>"; }
+static const char *_plugin_get_package(void)		{ return "janus.plugin.ustreamer"; }
+
+
+#undef STOP
+#undef READY
+#undef UNLOCK
+#undef LOCK
+
+#undef JLOG_PERROR
+#undef JLOG_ERROR
+#undef JLOG_WARN
+#undef JLOG_INFO

janus/src/rtp.c

@@ -0,0 +1,228 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    This source file is partially based on this code:                       #
+#      - https://github.com/catid/kvm/blob/master/kvm_pipeline/src           #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "rtp.h"
+
+
+#define PAYLOAD 96 // Payload type
+#define PRE 3 // Annex B prefix length
+
+
+void _rtp_process_nalu(rtp_s *rtp, const uint8_t *data, size_t size, uint32_t pts, bool marked, rtp_callback_f callback);
+static void _rtp_write_header(rtp_s *rtp, uint32_t pts, bool marked);
+
+static ssize_t _find_annexb(const uint8_t *data, size_t size);
+
+
+rtp_s *rtp_init(void) {
+	rtp_s *rtp;
+	A_CALLOC(rtp, 1);
+	rtp->ssrc = triple_u32(get_now_monotonic_u64());
+	rtp->sps = frame_init();
+	rtp->pps = frame_init();
+	A_MUTEX_INIT(&rtp->mutex);
+	return rtp;
+}
+
+void rtp_destroy(rtp_s *rtp) {
+	A_MUTEX_DESTROY(&rtp->mutex);
+	frame_destroy(rtp->pps);
+	frame_destroy(rtp->sps);
+	free(rtp);
+}
+
+char *rtp_make_sdp(rtp_s *rtp) {
+	A_MUTEX_LOCK(&rtp->mutex);
+
+	if (rtp->sps->used == 0 || rtp->pps->used == 0) {
+		A_MUTEX_UNLOCK(&rtp->mutex);
+		return NULL;
+	}
+
+	char *sps = NULL;
+	char *pps = NULL;
+	base64_encode(rtp->sps->data, rtp->sps->used, &sps, NULL);
+	base64_encode(rtp->pps->data, rtp->pps->used, &pps, NULL);
+
+	A_MUTEX_UNLOCK(&rtp->mutex);
+
+	// https://tools.ietf.org/html/rfc6184
+	// https://github.com/meetecho/janus-gateway/issues/2443
+	char *sdp;
+	A_ASPRINTF(sdp,
+		"v=0" RN
+		"o=- %" PRIu64 " 1 IN IP4 127.0.0.1" RN
+		"s=Pi-KVM uStreamer" RN
+		"t=0 0" RN
+		"m=video 1 RTP/SAVPF %d" RN
+		"c=IN IP4 0.0.0.0" RN
+		"a=rtpmap:%d H264/90000" RN
+		"a=fmtp:%d profile-level-id=42E01F" RN
+		"a=fmtp:%d packetization-mode=1" RN
+		"a=fmtp:%d sprop-sps=%s" RN
+		"a=fmtp:%d sprop-pps=%s" RN
+		"a=rtcp-fb:%d nack" RN
+		"a=rtcp-fb:%d nack pli" RN
+		"a=rtcp-fb:%d goog-remb" RN
+		"a=sendonly" RN,
+		get_now_id() >> 1, PAYLOAD, PAYLOAD, PAYLOAD, PAYLOAD,
+		PAYLOAD, sps,
+		PAYLOAD, pps,
+		PAYLOAD, PAYLOAD, PAYLOAD
+	);
+
+	free(sps);
+	free(pps);
+	return sdp;
+}
+
+void rtp_wrap_h264(rtp_s *rtp, const frame_s *frame, rtp_callback_f callback) {
+	// There is a complicated logic here but everything works as it should:
+	//   - https://github.com/pikvm/ustreamer/issues/115#issuecomment-893071775
+
+	assert(frame->format == V4L2_PIX_FMT_H264);
+
+	const uint32_t pts = get_now_monotonic_u64() * 9 / 100; // PTS units are in 90 kHz
+	ssize_t last_offset = -PRE;
+
+	while (true) { // Find and iterate by nalus
+		const size_t next_start = last_offset + PRE;
+		ssize_t offset = _find_annexb(frame->data + next_start, frame->used - next_start);
+		if (offset < 0) {
+			break;
+		}
+		offset += next_start;
+
+		if (last_offset >= 0) {
+			const uint8_t *data = frame->data + last_offset + PRE;
+			size_t size = offset - last_offset - PRE;
+			if (data[size - 1] == 0) { // Check for extra 00
+				--size;
+			}
+			_rtp_process_nalu(rtp, data, size, pts, false, callback);
+		}
+
+		last_offset = offset;
+	}
+
+	if (last_offset >= 0) {
+		const uint8_t *data = frame->data + last_offset + PRE;
+		size_t size = frame->used - last_offset - PRE;
+		_rtp_process_nalu(rtp, data, size, pts, true, callback);
+	}
+}
+
+void _rtp_process_nalu(rtp_s *rtp, const uint8_t *data, size_t size, uint32_t pts, bool marked, rtp_callback_f callback) {
+	const unsigned ref_idc = (data[0] >> 5) & 3;
+	const unsigned type = data[0] & 0x1F;
+
+	frame_s *ps = NULL;
+	switch (type) {
+		case 7: ps = rtp->sps; break;
+		case 8: ps = rtp->pps; break;
+	}
+	if (ps) {
+		A_MUTEX_LOCK(&rtp->mutex);
+		frame_set_data(ps, data, size);
+		A_MUTEX_UNLOCK(&rtp->mutex);
+	}
+
+#	define HEADER_SIZE 12
+
+	if (size + HEADER_SIZE <= RTP_DATAGRAM_SIZE) {
+		_rtp_write_header(rtp, pts, marked);
+		memcpy(rtp->datagram + HEADER_SIZE, data, size);
+		callback(rtp->datagram, size + HEADER_SIZE);
+		return;
+	}
+
+	const size_t fu_overhead = HEADER_SIZE + 2; // FU-A overhead
+
+	const uint8_t *src = data + 1;
+	ssize_t remaining = size - 1;
+
+	bool first = true;
+	while (remaining > 0) {
+		ssize_t frag_size = RTP_DATAGRAM_SIZE - fu_overhead;
+		const bool last = (remaining <= frag_size);
+		if (last) {
+			frag_size = remaining;
+		}
+
+		_rtp_write_header(rtp, pts, (marked && last));
+
+		rtp->datagram[HEADER_SIZE] = 28 | (ref_idc << 5);
+
+		uint8_t fu = type;
+		if (first) {
+			fu |= 0x80;
+		}
+		if (last) {
+			fu |= 0x40;
+		}
+		rtp->datagram[HEADER_SIZE + 1] = fu;
+
+		memcpy(rtp->datagram + fu_overhead,	src, frag_size);
+
+		callback(rtp->datagram, fu_overhead + frag_size);
+
+		src += frag_size;
+		remaining -= frag_size;
+		first = false;
+	}
+
+#	undef HEADER_SIZE
+}
+
+static void _rtp_write_header(rtp_s *rtp, uint32_t pts, bool marked) {
+	uint32_t word0 = 0x80000000;
+	if (marked) {
+		word0 |= 1 << 23;
+	}
+	word0 |= (PAYLOAD & 0x7F) << 16;
+	word0 |= rtp->seq;
+	++rtp->seq;
+
+#	define WRITE_BE_U32(_offset, _value) *((uint32_t *)(rtp->datagram + _offset)) = __builtin_bswap32(_value)
+	WRITE_BE_U32(0, word0);
+	WRITE_BE_U32(4, pts);
+	WRITE_BE_U32(8, rtp->ssrc);
+#	undef WRITE_BE_U32
+}
+
+static ssize_t _find_annexb(const uint8_t *data, size_t size) {
+	// Parses buffer for 00 00 01 start codes
+	if (size >= PRE) {
+		for (size_t index = 0; index <= size - PRE; ++index) {
+			if (data[index] == 0 && data[index + 1] == 0 && data[index + 2] == 1) {
+				return index;
+			}
+		}
+	}
+	return -1;
+}
+
+#undef PRE
+#undef PAYLOAD

janus/src/rtp.h

@@ -0,0 +1,69 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    This source file is partially based on this code:                       #
+#      - https://github.com/catid/kvm/blob/master/kvm_pipeline/src           #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <assert.h>
+
+#include <sys/types.h>
+#include <linux/videodev2.h>
+
+#include <pthread.h>
+
+#include "tools.h"
+#include "threading.h"
+#include "frame.h"
+#include "base64.h"
+
+
+// https://stackoverflow.com/questions/47635545/why-webrtc-chose-rtp-max-packet-size-to-1200-bytes
+#define RTP_DATAGRAM_SIZE 1200
+
+
+typedef struct {
+	uint32_t ssrc;
+	uint16_t seq;
+
+	uint8_t datagram[RTP_DATAGRAM_SIZE];
+
+	frame_s *sps; // Actually not a frame, just a bytes storage
+	frame_s *pps;
+
+	pthread_mutex_t mutex;
+} rtp_s;
+
+typedef void (*rtp_callback_f)(const uint8_t *datagram, size_t size);
+
+
+rtp_s *rtp_init(void);
+void rtp_destroy(rtp_s *rtp);
+
+char *rtp_make_sdp(rtp_s *rtp);
+void rtp_wrap_h264(rtp_s *rtp, const frame_s *frame, rtp_callback_f callback);

janus/src/threading.h

@@ -0,0 +1 @@
+../../src/libs/threading.h

janus/src/tools.h

@@ -0,0 +1 @@
+../../src/libs/tools.h

linters/Dockerfile

@@ -1,11 +1,12 @@
-FROM archlinux/base
+FROM archlinux/archlinux:base-devel
+
+RUN mkdir -p /etc/pacman.d/hooks \
+	&& ln -s /dev/null /etc/pacman.d/hooks/30-systemd-tmpfiles.hook
 
 RUN echo "Server = http://mirror.yandex.ru/archlinux/\$repo/os/\$arch" > /etc/pacman.d/mirrorlist
 
 RUN pacman -Syu --noconfirm \
 	&& pacman -S --needed --noconfirm \
-		base \
-		base-devel \
 		vim \
 		git \
 		libjpeg \
@@ -17,7 +18,8 @@ RUN pacman -Syu --noconfirm \
 		python-tox \
 		cppcheck \
 		npm \
-	&& (pacman -Sc --noconfirm || true)
+	&& (pacman -Sc --noconfirm || true) \
+	&& rm -rf /var/cache/pacman/pkg/*
 
 RUN npm install htmlhint -g
 

linters/cppcheck.h

@@ -0,0 +1,3 @@
+#define CHAR_BIT 8
+#define WITH_GPIO
+#define JANUS_PLUGIN_INIT(...) { __VA_ARGS__ }

linters/mypy.ini

@@ -1,5 +1,5 @@
 [mypy]
-python_version = 3.8
+python_version = 3.9
 ignore_missing_imports = true
 disallow_untyped_defs = true
 strict_optional = true

linters/pylint.ini

@@ -30,6 +30,7 @@ disable =
 	too-many-ancestors,
 	no-else-return,
 	len-as-condition,
+	unspecified-encoding,
 
 [REPORTS]
 msg-template = {symbol} -- {path}:{line}({obj}): {msg}

linters/tox.ini

@@ -3,7 +3,7 @@ envlist = cppcheck, flake8, pylint, mypy, vulture, htmlhint
 skipsdist = true
 
 [testenv]
-basepython = python3.8
+basepython = python3.10
 changedir = /src
 
 [testenv:cppcheck]
@@ -17,34 +17,35 @@ commands = cppcheck \
 			--suppress=assignmentInAssert \
 			--suppress=variableScope \
 			--inline-suppr \
-			-DCHAR_BIT=8 \
-		src
+			--library=python \
+			--include=linters/cppcheck.h \
+		src python/ustreamer.c janus/rtp.h janus/rtp.c janus/plugin.c
 
 [testenv:flake8]
 whitelist_externals = bash
-commands = bash -c 'flake8 --config=linters/flake8.ini tools/*.py'
+commands = bash -c 'flake8 --config=linters/flake8.ini tools/*.py' python/*.py
 deps =
 	flake8
 	flake8-quotes
 
 [testenv:pylint]
 whitelist_externals = bash
-commands = bash -c 'pylint --rcfile=linters/pylint.ini --output-format=colorized --reports=no tools/*.py'
+commands = bash -c 'pylint --rcfile=linters/pylint.ini --output-format=colorized --reports=no tools/*.py python/*.py'
 deps =
 	pylint
 
 [testenv:mypy]
 whitelist_externals = bash
-commands = bash -c 'mypy --config-file=linters/mypy.ini tools/*.py'
+commands = bash -c 'mypy --config-file=linters/mypy.ini tools/*.py python/*.py'
 deps =
 	mypy
 
 [testenv:vulture]
 whitelist_externals = bash
-commands = bash -c 'vulture tools/*.py'
+commands = bash -c 'vulture tools/*.py python/*.py'
 deps =
 	vulture
 
 [testenv:htmlhint]
 whitelist_externals = htmlhint
-commands = htmlhint src/http/data/*.html
+commands = htmlhint src/ustreamer/http/data/*.html

man/ustreamer-dump.1

@@ -0,0 +1,91 @@
+.\" Manpage for ustreamer-dump.
+.\" Open an issue or pull request to https://github.com/pikvm/ustreamer to correct errors or typos
+.TH USTREAMER-DUMP 1 "version 5.0" "January 2021"
+
+.SH NAME
+ustreamer-dump \- Dump uStreamer's memory sink to file
+
+.SH SYNOPSIS
+.B ustreamer-dump
+.RI [OPTIONS]
+
+.SH DESCRIPTION
+µStreamer-dump (\fBustreamer-dump\fP) writes a local stream from ustreamer to a file or redirect it to other utilities (such as \fBffmpeg\fR).
+
+.SH USAGE
+\fBustreamer\fR requires at least the \fB\-\-sink\fR option to operate.
+
+To output ustreamers sink "test" to ffmpeg, and into a file called test.mp4:
+
+\fBustreamer-dump \e\fR
+.RS
+\fB\-\-sink=test \e\fR # Use ustreamer sink "test"
+.nf
+\fB\-\-output\ \- \e\fR # Output to stdout
+\fB|\ ffmpeg\ \-use_wallclock_as_timestamps\ 1\ \-i\ pipe:\ \-c:v\ libx264\ test\.mp4\fR
+
+.SH OPTIONS
+.SS "Sink options"
+.TP
+.BR \-s ", " \-\-sink\ \fIname
+Memory sink ID. No default.
+.TP
+.BR \-t ", " \-\-sink\-timeout\ \fIsec
+Timeout for the upcoming frame. Default: 1.
+.TP
+.BR \-o ", " \-\-output\ \fIfilename
+Filename to dump output to. Use '-' for stdout. Default: just consume the sink.
+.TP
+.BR \-j ", " \-\-output-json
+Format output as JSON. Required option --output. Default: disabled.
+.TP
+.BR \-c ", " \-\-count\ \fIN
+Limit the number of frames. Default: 0 (infinite).
+.TP
+.BR \-i ", "\-\-interval\ \fIsec
+Delay between reading frames (float). Default: 0.
+
+.SS "Logging options"
+.TP
+.BR \-\-log\-level\ \fIN
+Verbosity level of messages from 0 (info) to 3 (debug). Enabling debugging messages can slow down the program.
+Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).
+Default: 0.
+.TP
+.BR \-\-perf
+Enable performance messages (same as \-\-log\-level=1). Default: disabled.
+.TP
+.BR \-\-verbose
+Enable verbose messages and lower (same as \-\-log\-level=2). Default: disabled.
+.TP
+.BR \-\-debug
+Enable debug messages and lower (same as \-\-log\-level=3). Default: disabled.
+.TP
+.BR \-\-force\-log\-colors
+Force color logging. Default: colored if stderr is a TTY.
+.TP
+.BR \-\-no\-log\-colors
+Disable color logging. Default: ditto.
+
+.SS "Help options"
+.TP
+.BR \-h ", " \-\-help
+Print this text and exit.
+.TP
+.BR \-v ", " \-\-version
+Print version and exit.
+
+.SH "SEE ALSO"
+.BR ustreamer (1)
+
+.SH BUGS
+Please file any bugs and issues at \fIhttps://github.com/pikvm/ustreamer/issues\fR
+
+.SH AUTHOR
+Maxim Devaev <mdevaev@gmail.com>
+
+.SH HOMEPAGE
+\fIhttps://pikvm.org/\fR
+
+.SH COPYRIGHT
+GNU General Public License v3.0

man/ustreamer.1

@@ -0,0 +1,333 @@
+.\" Manpage for ustreamer.
+.\" Open an issue or pull request to https://github.com/pikvm/ustreamer to correct errors or typos
+.TH USTREAMER 1 "version 5.0" "November 2020"
+
+.SH NAME
+ustreamer \- stream MJPEG video from any V4L2 device to the network
+
+.SH SYNOPSIS
+.B ustreamer
+.RI [OPTIONS]
+
+.SH DESCRIPTION
+µStreamer (\fBustreamer\fP) is a lightweight and very quick server to stream MJPEG video from any V4L2 device to the network. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc. µStreamer is a part of the Pi-KVM project designed to stream VGA and HDMI screencast hardware data with the highest resolution and FPS possible.
+
+.SH USAGE
+Without arguments, \fBustreamer\fR will try to open \fB/dev/video0\fR with 640x480 resolution and start streaming on \fBhttp://127\.0\.0\.1:8080\fR\. You can override this behavior using parameters \fB\-\-device\fR, \fB\-\-host\fR and \fB\-\-port\fR\. For example, to stream to the world, run: \fBustreamer --device=/dev/video1 --host=0.0.0.0 --port=80\fR
+
+Please note that since µStreamer v2\.0 cross\-domain requests were disabled by default for security reasons\. To enable the old behavior, use the option \fB\-\-allow\-origin=\e*\fR\.
+
+For example, the recommended way of running µStreamer with Auvidea B101 on a Raspberry Pi is:
+
+\fBustreamer \e\fR
+.RS
+\fB\-\-format=uyvy \e\fR # Device input format
+.nf
+\fB\-\-encoder=m2m-image \e\fR # Hardware encoding with V4L2 M2M intraface
+.nf
+\fB\-\-workers=3 \e\fR # Maximum workers for V4L2 encoder
+.nf
+\fB\-\-persistent \e\fR # Don\'t re\-initialize device on timeout (for example when HDMI cable was disconnected)
+.nf
+\fB\-\-dv\-timings \e\fR # Use DV\-timings
+.nf
+\fB\-\-drop\-same\-frames=30\fR # Save the traffic\fR
+.RE
+.P
+Please note that to use \fB\-\-drop\-same\-frames\fR for different browsers you need to use some specific URL \fB/stream\fR parameters (see URL \fB/\fR for details)\.
+.P
+You can always view the full list of options with \fBustreamer \-\-help\fR\. Some features may not be available on your platform. To find out which features are enabled, use \fBustreamer \-\-features\fR.
+
+.SH OPTIONS
+.SS "Capturing options"
+.TP
+.BR \-d\ \fI/dev/path ", " \-\-device\ \fI/dev/path
+Path to V4L2 device. Default: /dev/video0.
+.TP
+.BR \-i\ \fIN ", " \-\-input\ \fIN
+Input channel. Default: 0.
+.TP
+.BR \-r\ \fIWxH ", " \-\-resolution\ \fIWxH
+Initial image resolution. Default: 640x480.
+.TP
+.BR \-m\ \fIfmt ", " \-\-format\ \fIfmt
+Image format.
+Available: YUYV, UYVY, RGB565, RGB24, JPEG; default: YUYV.
+.TP
+.BR \-a\ \fIstd ", " \-\-tv\-standard\ \fIstd
+Force TV standard.
+Available: PAL, NTSC, SECAM; default: disabled.
+.TP
+.BR \-I\ \fImethod ", " \-\-io\-method\ \fImethod
+Set V4L2 IO method (see kernel documentation). Changing of this parameter may increase the performance. Or not.
+Available: MMAP, USERPTR; default: MMAP.
+.TP
+.BR \-f\ \fIN ", " \-\-desired\-fps\ \fIN
+Desired FPS. Default: maximum possible.
+.TP
+.BR \-z\ \fIN ", " \-\-min\-frame\-size\ \fIN
+Drop frames smaller then this limit. Useful if the device produces small\-sized garbage frames. Default: 128 bytes.
+.TP
+.BR \-n ", " \-\-persistent
+Don't re\-initialize device on timeout. Default: disabled.
+.TP
+.BR \-t ", " \-\-dv\-timings
+Enable DV-timings querying and events processing to automatic resolution change. Default: disabled.
+.TP
+.BR \-b\ \fIN ", " \-\-buffers\ \fIN
+The number of buffers to receive data from the device. Each buffer may processed using an independent thread.
+Default: 2 (the number of CPU cores (but not more than 4) + 1).
+.TP
+.BR \-w\ \fIN ", " \-\-workers\ \fIN
+The number of worker threads but not more than buffers.
+Default: 1 (the number of CPU cores (but not more than 4)).
+.TP
+.BR \-q\ \fIN ", " \-\-quality\ \fIN
+Set quality of JPEG encoding from 1 to 100 (best). Default: 80.
+Note: If HW encoding is used (JPEG source format selected), this parameter attempts to configure the camera or capture device hardware's internal encoder. It does not re\-encode MJPEG to MJPEG to change the quality level for sources that already output MJPEG.
+.TP
+.BR \-c\ \fItype ", " \-\-encoder\ \fItype
+Use specified encoder. It may affect the number of workers.
+
+CPU ─ Software MJPEG encoding (default).
+
+HW ─ Use pre-encoded MJPEG frames directly from camera hardware.
+
+M2M-VIDEO ─ GPU-accelerated MJPEG encoding.
+
+M2M-IMAGE ─ GPU-accelerated JPEG encoding.
+
+NOOP ─ Don't compress MJPEG stream (do nothing).
+.TP
+.BR \-g\ \fIWxH,... ", " \-\-glitched\-resolutions\ \fIWxH,...
+It doesn't do anything. Still here for compatibility.
+.TP
+.BR \-k\ \fIpath ", " \-\-blank\ \fIpath
+Path to JPEG file that will be shown when the device is disconnected during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.
+.TP
+.BR \-K\ \fIsec ", " \-\-last\-as\-blank\ \fIsec
+Show the last frame received from the camera after it was disconnected, but no more than specified time (or endlessly if 0 is specified). If the device has not yet been online, display 'NO SIGNAL' or the image specified by option \-\-blank. Note: currently this option has no effect on memory sinks. Default: disabled.
+.TP
+.BR \-l ", " \-\-slowdown
+Slowdown capturing to 1 FPS or less when no stream or sink clients are connected. Useful to reduce CPU consumption. Default: disabled.
+.TP
+.BR \-\-device\-timeout\ \fIsec
+Timeout for device querying. Default: 1.
+.TP
+.BR \-\-device\-error\-delay\ \fIsec
+Delay before trying to connect to the device again after an error (timeout for example). Default: 1.
+.TP
+.BR \-\-m2m\-device\ \fI/dev/path
+Path to V4L2 mem-to-mem encoder device. Default: auto-select.
+
+.SS "Image control options"
+.TP
+.BR \-\-image\-default
+Reset all image settings below to default. Default: no change.
+.TP
+.BR \-\-brightness\ \fIN ", " \fIauto ", " \fIdefault
+Set brightness. Default: no change.
+.TP
+.BR \-\-contrast\ \fIN ", " \fIdefault
+Set contrast. Default: no change.
+.TP
+.BR \-\-saturation\ \fIN ", " \fIdefault
+Set saturation. Default: no change.
+.TP
+.BR \-\-hue\ \fIN ", " \fIauto ", " \fIdefault
+Set hue. Default: no change.
+.TP
+.BR \-\-gamma\ \fIN ", " \fIdefault
+Set gamma. Default: no change.
+.TP
+.BR \-\-sharpness\ \fIN ", " \fIdefault
+Set sharpness. Default: no change.
+.TP
+.BR \-\-backlight\-compensation\ \fIN ", " \fIdefault
+Set backlight compensation. Default: no change.
+.TP
+.BR \-\-white\-balance\ \fIN ", " \fIauto ", " \fIdefault
+Set white balance. Default: no change.
+.TP
+.BR \-\-gain\ \fIN ", " \fIauto ", " \fIdefault
+Set gain. Default: no change.
+.TP
+.BR \-\-color\-effect\ \fIN ", " \fIdefault
+Set color effect. Default: no change.
+.TP
+.BR \-\-flip\-vertical\ \fI1 ", " \fI0 ", " \fIdefault
+Set vertical flip. Default: no change.
+.TP
+.BR \-\-flip\-horizontal\ \fI1 ", " \fI0 ", " \fIdefault
+Set horizontal flip. Default: no change.
+
+.SS "HTTP server options"
+.TP
+.BR \-s\ \fIaddress ", " \-\-host\ \fIaddress
+Listen on Hostname or IP. Default: 127.0.0.1.
+.TP
+.BR \-p\ \fIN ", " \-\-port\ \fIN
+Bind to this TCP port. Default: 8080.
+.TP
+.BR \-U\ \fIpath ", " \-\-unix\ \fIpath
+Bind to UNIX domain socket. Default: disabled.
+.TP
+.BR \-D ", " \-\-unix\-rm
+Try to remove old unix socket file before binding. default: disabled.
+.TP
+.BR \-M\ \fImode ", " \-\-unix\-mode\ \fImode
+Set UNIX socket file permissions (like 777). Default: disabled.
+.TP
+.BR \-S ", " \-\-systemd
+Bind to systemd socket for socket activation. Required \fBWITH_SYSTEMD\fR feature. Default: disabled.
+.TP
+.BR \-\-user\ \fIname
+HTTP basic auth user. Default: disabled.
+.TP
+.BR \-\-passwd\ \fIstr
+HTTP basic auth passwd. Default: empty.
+.TP
+.BR \-\-static\ \fIpath
+Path to dir with static files instead of embedded root index page. Symlinks are not supported for security reasons. Default: disabled.
+.TP
+.BR \-e\ \fIN ", " \-\-drop\-same\-frames\ \fIN
+Don't send identical frames to clients, but no more than specified number. It can significantly reduce the outgoing traffic, but will increase the CPU loading. Don't use this option with analog signal sources or webcams, it's useless. Default: disabled.
+.TP
+.BR \-R\ \fIWxH ", " \-\-fake\-resolution\ \fIWxH
+Override image resolution for the /state. Default: disabled.
+.TP
+.BR \-\-tcp\-nodelay
+Set TCP_NODELAY flag to the client /stream socket. Only for TCP socket.
+Default: disabled.
+.TP
+.BR \-\-allow\-origin\ \fIstr
+Set Access\-Control\-Allow\-Origin header. Default: disabled.
+.TP
+.BR \-\-server\-timeout\ \fIsec
+Timeout for client connections. Default: 10.
+
+.SS "JPEG sink options"
+With shared memory sink you can write a stream to a file. See \fBustreamer-dump\fR(1) for more info.
+.TP
+.BR \-\-sink\ \fIname
+Use the specified shared memory object to sink JPEG frames. Default: disabled.
+.TP
+.BR \-\-sink\-mode\ \fImode
+Set JPEG sink permissions (like 777). Default: 660.
+.TP
+.BR \-\-sink\-rm
+Remove shared memory on stop. Default: disabled.
+.TP
+.BR \-\-sink\-client\-ttl\ \fIsec
+Client TTL. Default: 10.
+.TP
+.BR \-\-sink\-timeout\ \fIsec
+Timeout for lock. Default: 1.
+
+.SS "H264 sink options"
+.TP
+.BR \-\-h264\-sink\ \fIname
+Use the specified shared memory object to sink H264 frames. Default: disabled.
+.TP
+.BR \-\-h264\-sink\-mode\ \fImode
+Set H264 sink permissions (like 777). Default: 660.
+.TP
+.BR \-\-h264\-sink\-rm
+Remove shared memory on stop. Default: disabled.
+.TP
+.BR \-\-h264\-sink\-client\-ttl\ \fIsec
+Client TTL. Default: 10.
+.TP
+.BR \-\-h264\-sink\-timeout\ \fIsec
+Timeout for lock. Default: 1.
+.TP
+.BR \-\-h264\-bitrate\ \fIkbps
+H264 bitrate in Kbps. Default: 5000.
+.TP
+.BR \-\-h264\-gop\ \fIN
+Intarval between keyframes. Default: 30.
+.TP
+.BR \-\-h264\-m2m\-device\ \fI/dev/path
+Path to V4L2 mem-to-mem encoder device. Default: auto-select.
+
+
+.SS "Process options"
+.TP
+.BR \-\-exit\-on\-parent\-death
+Exit the program if the parent process is dead. Required \fBHAS_PDEATHSIG\fR feature. Default: disabled.
+.TP
+.BR \-\-exit\-on\-no\-clients \fIsec
+Exit the program if there have been no stream or sink clients or any HTTP requests in the last N seconds. Default: 0 (disabled).
+.TP
+.BR \-\-process\-name\-prefix\ \fIstr
+Set process name prefix which will be displayed in the process list like '\fIstr: ustreamer \-\-blah\-blah\-blah'\fR. Required \fBWITH_SETPROCTITLE\fR feature. Default: disabled.
+.TP
+.BR \-\-notify\-parent
+Send SIGUSR2 to the parent process when the stream parameters are changed. Checking changes is performed for the online flag and image resolution. Required \fBWITH_SETPROCTITLE\fR feature.
+
+.SS "GPIO options"
+Available only if \fBWITH_GPIO\fR feature enabled.
+.TP
+.BR \-\-gpio\-device\ \fI/dev/path
+Path to GPIO character device. Default: /dev/gpiochip0.
+.TP
+.BR \-\-gpio\-consumer\-prefix\ \fIstr
+Consumer prefix for GPIO outputs. Default: ustreamer.
+.TP
+.BR \-\-gpio\-prog\-running\ \fIpin
+Set 1 on GPIO pin while µStreamer is running. Default: disabled.
+.TP
+.BR \-\-gpio\-stream\-online\ \fIpin
+Set 1 while streaming. Default: disabled.
+.TP
+.BR \-\-gpio\-has\-http\-clients\ \fIpin
+Set 1 while stream has at least one client. Default: disabled.
+
+.SS "Logging options"
+.TP
+.BR \-\-log\-level\ \fIN
+Verbosity level of messages from 0 (info) to 3 (debug). Enabling debugging messages can slow down the program.
+Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).
+Default: 0.
+.TP
+.BR \-\-perf
+Enable performance messages (same as \-\-log\-level=1). Default: disabled.
+.TP
+.BR \-\-verbose
+Enable verbose messages and lower (same as \-\-log\-level=2). Default: disabled.
+.TP
+.BR \-\-debug
+Enable debug messages and lower (same as \-\-log\-level=3). Default: disabled.
+.TP
+.BR \-\-force\-log\-colors
+Force color logging. Default: colored if stderr is a TTY.
+.TP
+.BR \-\-no\-log\-colors
+Disable color logging. Default: ditto.
+
+.SS "Help options"
+.TP
+.BR \-h ", " \-\-help
+Print this text and exit.
+.TP
+.BR \-v ", " \-\-version
+Print version and exit.
+.TP
+.BR \-\-features
+Print list of supported features.
+
+.SH "SEE ALSO"
+.BR ustreamer-dump (1)
+
+.SH BUGS
+Please file any bugs and issues at \fIhttps://github.com/pikvm/ustreamer/issues\fR
+
+.SH AUTHOR
+Maxim Devaev <mdevaev@gmail.com>
+
+.SH HOMEPAGE
+\fIhttps://pikvm.org/\fR
+
+.SH COPYRIGHT
+GNU General Public License v3.0
+

pkg/arch/PKGBUILD

@@ -3,32 +3,51 @@
 
 
 pkgname=ustreamer
-pkgver=2.1
+pkgver=5.0
 pkgrel=1
-pkgdesc="Lightweight and fast MJPG-HTTP streamer"
+pkgdesc="Lightweight and fast MJPEG-HTTP streamer"
 url="https://github.com/pikvm/ustreamer"
 license=(GPL)
 arch=(i686 x86_64 armv6h armv7h aarch64)
-depends=(libjpeg libevent libutil-linux libbsd libgpiod)
-# optional: raspberrypi-firmware for OMX encoder
+depends=(libjpeg libevent libbsd libgpiod)
 makedepends=(gcc make)
 source=(${pkgname}::"git+https://github.com/pikvm/ustreamer#commit=v${pkgver}")
 md5sums=(SKIP)
 
 
+_options="WITH_GPIO=1"
+if [ -e /usr/bin/python3 ]; then
+	_options="$_options WITH_PYTHON=1"
+	depends+=(python)
+	makedepends+=(python-setuptools)
+fi
+if [ -e /usr/include/janus/plugins/plugin.h ];then
+	depends+=(janus-gateway-pikvm)
+	makedepends+=(janus-gateway-pikvm)
+	_options="$_options WITH_JANUS=1"
+fi
+if [ -e /usr/include/systemd/sd-daemon.h ];then
+	depends+=(systemd)
+	makedepends+=(systemd)
+	_options="$_options WITH_SYSTEMD=1"
+fi
+
+
+# LD does not link mmal with this option
+# This DOESN'T affect setup.py
+LDFLAGS="${LDFLAGS//--as-needed/}"
+export LDFLAGS="${LDFLAGS//,,/,}"
+
+
 build() {
 	cd "$srcdir"
 	rm -rf $pkgname-build
 	cp -r $pkgname $pkgname-build
 	cd $pkgname-build
-
-	local _options="WITH_GPIO=1"
-	[ -e /opt/vc/include/IL/OMX_Core.h ] && _options="$_options WITH_OMX=1"
-
 	make $_options CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" $MAKEFLAGS
 }
 
 package() {
 	cd "$srcdir/$pkgname-build"
-	make DESTDIR="$pkgdir" PREFIX=/usr install
+	make $_options CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" DESTDIR="$pkgdir" PREFIX=/usr install
 }

pkg/docker/Dockerfile.arm.cross

@@ -7,13 +7,12 @@ RUN apt-get update \
 		gcc \
 		libjpeg8-dev \
 		libbsd-dev \
-		libraspberrypi-dev \
 		libgpiod-dev \
 	&& rm -rf /var/lib/apt/lists/*
 
 WORKDIR /build/ustreamer/
 COPY . .
-RUN make -j5 WITH_OMX=1 WITH_GPIO=1
+RUN make -j5 WITH_GPIO=1
 RUN ["cross-build-end"]
 
 FROM balenalib/raspberrypi3-debian:run as RUN
@@ -25,7 +24,6 @@ RUN apt-get update \
 		libevent-2.1 \
 		libevent-pthreads-2.1-6 \
 		libjpeg8 \
-		uuid \
 		libbsd0 \
 		libgpiod2 \
 	&& rm -rf /var/lib/apt/lists/*

pkg/docker/Dockerfile.arm.native

@@ -5,13 +5,12 @@ RUN apt-get update \
 		gcc \
 		libjpeg8-dev \
 		libbsd-dev \
-		libraspberrypi-dev \
 		libgpiod-dev \
 	&& rm -rf /var/lib/apt/lists/*
 
 WORKDIR /build/ustreamer/
 COPY . .
-RUN make -j5 WITH_OMX=1 WITH_GPIO=1
+RUN make -j5 WITH_GPIO=1
 
 FROM balenalib/raspberrypi3-debian:run as RUN
 
@@ -20,7 +19,6 @@ RUN apt-get update \
 		libevent-2.1 \
 		libevent-pthreads-2.1-6 \
 		libjpeg8 \
-		uuid \
 		libbsd0 \
 		libgpiod2 \
 	&& rm -rf /var/lib/apt/lists/*

pkg/docker/Dockerfile.x64.native

@@ -8,7 +8,6 @@ RUN apt-get update \
 		git \
 		libevent-dev \
 		libjpeg62-turbo-dev \
-		uuid-dev \
 		libbsd-dev \
 		libgpiod-dev \
 	&& rm -rf /var/lib/apt/lists/*
@@ -25,7 +24,6 @@ RUN apt-get update \
 		libevent-2.1 \
 		libevent-pthreads-2.1-6 \
 		libjpeg62-turbo \
-		uuid \
 		libbsd0 \
 		libgpiod2 \
 	&& rm -rf /var/lib/apt/lists/*

pkg/gentoo/ustreamer-9999.ebuild

@@ -1,28 +1,30 @@
 # Copyright 2019 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
- 
+
 EAPI=7
- 
+
 inherit git-r3
- 
-DESCRIPTION="uStreamer - Lightweight and fast MJPG-HTTP streamer"
+
+DESCRIPTION="uStreamer - Lightweight and fast MJPEG-HTTP streamer"
 HOMEPAGE="https://github.com/pikvm/ustreamer"
 EGIT_REPO_URI="https://github.com/pikvm/ustreamer.git"
- 
+
 LICENSE="GPL-3"
 SLOT="0"
 KEYWORDS="~amd64"
 IUSE=""
- 
+
 DEPEND="
 	>=dev-libs/libevent-2.1.8
 	>=media-libs/libjpeg-turbo-1.5.3
-	>=sys-apps/util-linux-2.33
 	>=dev-libs/libbsd-0.9.1
 "
 RDEPEND="${DEPEND}"
 BDEPEND=""
- 
+
 src_install() {
-	dobin ustreamer 
+	dobin ustreamer
+	dobin ustreamer-dump
+	doman man/ustreamer.1
+	doman man/ustreamer-dump.1
 }

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=2.1
+PKG_VERSION:=5.0
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 
@@ -25,17 +25,18 @@ define Package/ustreamer
   SECTION:=multimedia
   CATEGORY:=Multimedia
   TITLE:=uStreamer
-  DEPENDS:=+libpthread +libjpeg +libv4l +libuuid +libbsd +libevent2 +libevent2-core +libevent2-extra +libevent2-pthreads
+  DEPENDS:=+libpthread +libjpeg +libv4l +libbsd +libevent2 +libevent2-core +libevent2-extra +libevent2-pthreads
   URL:=https://github.com/pikvm/ustreamer
 endef
 
 define Package/ustreamer/description
- µStreamer - Lightweight and fast MJPG-HTTP streamer
+ µStreamer - Lightweight and fast MJPEG-HTTP streamer
 endef
 
 define Package/ustreamer/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ustreamer $(1)/usr/bin/
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ustreamer-dump $(1)/usr/bin/
 	$(INSTALL_DIR) $(1)/etc/config
 	$(CP) ./files/ustreamer.config $(1)/etc/config/ustreamer
 	$(INSTALL_DIR) $(1)/etc/init.d

python/Makefile

@@ -0,0 +1,20 @@
+-include ../config.mk
+
+DESTDIR ?=
+PREFIX ?= /usr/local
+
+PY ?= python3
+
+
+# =====
+all:
+	$(info == PY_BUILD ustreamer-*.so)
+	@ $(PY) setup.py build
+
+
+install:
+	$(PY) setup.py install --prefix=$(PREFIX) --root=$(if $(DESTDIR),$(DESTDIR),/)
+
+
+clean:
+	rm -rf build

python/setup.py

@@ -0,0 +1,25 @@
+import os
+
+from setuptools import Extension
+from setuptools import setup
+
+
+# =====
+if __name__ == "__main__":
+    setup(
+        name="ustreamer",
+        version="5.0",
+        description="uStreamer tools",
+        author="Maxim Devaev",
+        author_email="mdevaev@gmail.com",
+        url="https://github.com/pikvm/ustreamer",
+        ext_modules=[
+            Extension(
+                "ustreamer",
+                libraries=["rt", "m", "pthread"],
+                undef_macros=["NDEBUG"],
+                sources=["src/" + name for name in os.listdir("src") if name.endswith(".c")],
+                depends=["src/" + name for name in os.listdir("src") if name.endswith(".h")],
+            ),
+        ],
+    )

python/src/frame.c

@@ -0,0 +1 @@
+../../src/libs/frame.c

python/src/frame.h

@@ -0,0 +1 @@
+../../src/libs/frame.h

python/src/memsinksh.h

@@ -0,0 +1 @@
+../../src/libs/memsinksh.h

python/src/tools.h

@@ -0,0 +1 @@
+../../src/libs/tools.h

python/src/ustreamer.c

@@ -0,0 +1,318 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <Python.h>
+
+#include "tools.h"
+#include "frame.h"
+#include "memsinksh.h"
+
+
+typedef struct {
+	PyObject_HEAD
+
+	char	*obj;
+	double	lock_timeout;
+	double	wait_timeout;
+	double	drop_same_frames;
+
+	int					fd;
+	memsink_shared_s	*mem;
+
+	uint64_t	frame_id;
+	long double	frame_ts;
+	frame_s		*frame;
+} MemsinkObject;
+
+
+#define MEM(_next)		self->mem->_next
+#define FRAME(_next)	self->frame->_next
+
+
+static void MemsinkObject_destroy_internals(MemsinkObject *self) {
+	if (self->mem != NULL) {
+		memsink_shared_unmap(self->mem);
+		self->mem = NULL;
+	}
+	if (self->fd > 0) {
+		close(self->fd);
+		self->fd = -1;
+	}
+	if (self->frame) {
+		frame_destroy(self->frame);
+		self->frame = NULL;
+	}
+}
+
+static int MemsinkObject_init(MemsinkObject *self, PyObject *args, PyObject *kwargs) {
+	self->lock_timeout = 1;
+	self->wait_timeout = 1;
+
+	static char *kws[] = {"obj", "lock_timeout", "wait_timeout", "drop_same_frames", NULL};
+	if (!PyArg_ParseTupleAndKeywords(
+		args, kwargs, "s|ddd", kws,
+		&self->obj, &self->lock_timeout, &self->wait_timeout, &self->drop_same_frames)) {
+		return -1;
+	}
+
+#	define SET_DOUBLE(_field, _cond) { \
+			if (!(self->_field _cond)) { \
+				PyErr_SetString(PyExc_ValueError, #_field " must be " #_cond); \
+				return -1; \
+			} \
+		}
+
+	SET_DOUBLE(lock_timeout, > 0);
+	SET_DOUBLE(wait_timeout, > 0);
+	SET_DOUBLE(drop_same_frames, >= 0);
+
+#	undef SET_DOUBLE
+
+	self->frame = frame_init();
+
+	if ((self->fd = shm_open(self->obj, O_RDWR, 0)) == -1) {
+		PyErr_SetFromErrno(PyExc_OSError);
+		goto error;
+	}
+
+	if ((self->mem = memsink_shared_map(self->fd)) == NULL) {
+		PyErr_SetFromErrno(PyExc_OSError);
+		goto error;
+	}
+
+	return 0;
+
+	error:
+		MemsinkObject_destroy_internals(self);
+		return -1;
+}
+
+static PyObject *MemsinkObject_repr(MemsinkObject *self) {
+	char repr[1024];
+	snprintf(repr, 1023, "<Memsink(%s)>", self->obj);
+	return Py_BuildValue("s", repr);
+}
+
+static void MemsinkObject_dealloc(MemsinkObject *self) {
+	MemsinkObject_destroy_internals(self);
+	PyObject_Del(self);
+}
+
+static PyObject *MemsinkObject_close(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+	MemsinkObject_destroy_internals(self);
+	Py_RETURN_NONE;
+}
+
+static PyObject *MemsinkObject_enter(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+	Py_INCREF(self);
+	return (PyObject *)self;
+}
+
+static PyObject *MemsinkObject_exit(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+	return PyObject_CallMethod((PyObject *)self, "close", "");
+}
+
+static int wait_frame(MemsinkObject *self) {
+	long double deadline_ts = get_now_monotonic() + self->wait_timeout;
+
+#	define RETURN_OS_ERROR { \
+			Py_BLOCK_THREADS \
+			PyErr_SetFromErrno(PyExc_OSError); \
+			return -1; \
+		}
+
+	long double now;
+	do {
+		Py_BEGIN_ALLOW_THREADS
+
+		int retval = flock_timedwait_monotonic(self->fd, self->lock_timeout);
+		now = get_now_monotonic();
+
+		if (retval < 0 && errno != EWOULDBLOCK) {
+			RETURN_OS_ERROR;
+
+		} else if (retval == 0) {
+			if (MEM(magic) == MEMSINK_MAGIC && MEM(version) == MEMSINK_VERSION && MEM(id) != self->frame_id) {
+				if (self->drop_same_frames > 0) {
+					if (
+						FRAME_COMPARE_META_USED_NOTS(self->mem, self->frame)
+						&& (self->frame_ts + self->drop_same_frames > now)
+						&& !memcmp(FRAME(data), MEM(data), MEM(used))
+					) {
+						self->frame_id = MEM(id);
+						goto drop;
+					}
+				}
+
+				Py_BLOCK_THREADS
+				return 0;
+			}
+
+			if (flock(self->fd, LOCK_UN) < 0) {
+				RETURN_OS_ERROR;
+			}
+		}
+
+		drop:
+
+		if (usleep(1000) < 0) {
+			RETURN_OS_ERROR;
+		}
+
+		Py_END_ALLOW_THREADS
+
+		if (PyErr_CheckSignals() < 0) {
+			return -1;
+		}
+	} while (now < deadline_ts);
+
+#	undef RETURN_OS_ERROR
+
+	return -2;
+}
+
+static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+	if (self->mem == NULL || self->fd <= 0) {
+		PyErr_SetString(PyExc_RuntimeError, "Closed");
+		return NULL;
+	}
+
+	switch (wait_frame(self)) {
+		case 0: break;
+		case -2: Py_RETURN_NONE;
+		default: return NULL;
+	}
+
+	frame_set_data(self->frame, MEM(data), MEM(used));
+	FRAME_COPY_META(self->mem, self->frame);
+	self->frame_id = MEM(id);
+	self->frame_ts = get_now_monotonic();
+	MEM(last_client_ts) = self->frame_ts;
+
+	if (flock(self->fd, LOCK_UN) < 0) {
+		return PyErr_SetFromErrno(PyExc_OSError);
+	}
+
+	PyObject *dict_frame = PyDict_New();
+	if (dict_frame  == NULL) {
+		return NULL;
+	}
+
+#	define SET_VALUE(_key, _maker) { \
+			PyObject *_tmp = _maker; \
+			if (_tmp == NULL) { \
+				return NULL; \
+			} \
+			if (PyDict_SetItemString(dict_frame, _key, _tmp) < 0) { \
+				Py_DECREF(_tmp); \
+				return NULL; \
+			} \
+			Py_DECREF(_tmp); \
+		}
+#	define SET_NUMBER(_key, _from, _to) SET_VALUE(#_key, Py##_to##_From##_from(FRAME(_key)))
+
+	SET_NUMBER(width, Long, Long);
+	SET_NUMBER(height, Long, Long);
+	SET_NUMBER(format, Long, Long);
+	SET_NUMBER(stride, Long, Long);
+	SET_NUMBER(online, Long, Bool);
+	SET_NUMBER(key, Long, Bool);
+	SET_NUMBER(grab_ts, Double, Float);
+	SET_NUMBER(encode_begin_ts, Double, Float);
+	SET_NUMBER(encode_end_ts, Double, Float);
+	SET_VALUE("data", PyBytes_FromStringAndSize((const char *)FRAME(data), FRAME(used)));
+
+#	undef SET_NUMBER
+#	undef SET_VALUE
+
+	return dict_frame;
+}
+
+static PyObject *MemsinkObject_is_opened(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+	return PyBool_FromLong(self->mem != NULL && self->fd > 0);
+}
+
+#define FIELD_GETTER(_field, _from, _to) \
+	static PyObject *MemsinkObject_getter_##_field(MemsinkObject *self, void *Py_UNUSED(closure)) { \
+		return Py##_to##_From##_from(self->_field); \
+	}
+
+FIELD_GETTER(obj, String, Unicode)
+FIELD_GETTER(lock_timeout, Double, Float)
+FIELD_GETTER(wait_timeout, Double, Float)
+FIELD_GETTER(drop_same_frames, Double, Float)
+
+#undef FIELD_GETTER
+
+static PyMethodDef MemsinkObject_methods[] = {
+#	define ADD_METHOD(_name, _method, _flags) \
+		{.ml_name = _name, .ml_meth = (PyCFunction)MemsinkObject_##_method, .ml_flags = (_flags)}
+	ADD_METHOD("close", close, METH_NOARGS),
+	ADD_METHOD("__enter__", enter, METH_NOARGS),
+	ADD_METHOD("__exit__", exit, METH_VARARGS),
+	ADD_METHOD("wait_frame", wait_frame, METH_NOARGS),
+	ADD_METHOD("is_opened", is_opened, METH_NOARGS),
+	{},
+#	undef ADD_METHOD
+};
+
+static PyGetSetDef MemsinkObject_getsets[] = {
+#	define ADD_GETTER(_field) {.name = #_field, .get = (getter)MemsinkObject_getter_##_field}
+	ADD_GETTER(obj),
+	ADD_GETTER(lock_timeout),
+	ADD_GETTER(wait_timeout),
+	ADD_GETTER(drop_same_frames),
+	{},
+#	undef ADD_GETTER
+};
+
+static PyTypeObject MemsinkType = {
+	PyVarObject_HEAD_INIT(NULL, 0)
+	.tp_name		= "ustreamer.Memsink",
+	.tp_basicsize	= sizeof(MemsinkObject),
+	.tp_flags		= Py_TPFLAGS_DEFAULT,
+	.tp_new			= PyType_GenericNew,
+	.tp_init		= (initproc)MemsinkObject_init,
+	.tp_dealloc		= (destructor)MemsinkObject_dealloc,
+	.tp_repr		= (reprfunc)MemsinkObject_repr,
+	.tp_methods		= MemsinkObject_methods,
+	.tp_getset		= MemsinkObject_getsets,
+};
+
+static PyModuleDef ustreamer_Module = {
+	PyModuleDef_HEAD_INIT,
+	.m_name = "ustreamer",
+	.m_size = -1,
+};
+
+PyMODINIT_FUNC PyInit_ustreamer(void) { // cppcheck-suppress unusedFunction
+	PyObject *module = PyModule_Create(&ustreamer_Module);
+	if (module == NULL) {
+		return NULL;
+	}
+
+	if (PyType_Ready(&MemsinkType) < 0) {
+		return NULL;
+	}
+
+	Py_INCREF(&MemsinkType);
+
+	if (PyModule_AddObject(module, "Memsink", (PyObject *)&MemsinkType) < 0) {
+		return NULL;
+	}
+
+	return module;
+}
+
+#undef FRAME
+#undef MEM

src/Makefile

@@ -0,0 +1,108 @@
+DESTDIR ?=
+PREFIX ?= /usr/local
+
+CC ?= gcc
+CFLAGS ?= -O3
+LDFLAGS ?=
+
+
+# =====
+_USTR = ustreamer.bin
+_DUMP = ustreamer-dump.bin
+
+_CFLAGS = -MD -c -std=c11 -Wall -Wextra -D_GNU_SOURCE $(CFLAGS)
+_LDFLAGS = $(LDFLAGS)
+
+_COMMON_LIBS = -lm -ljpeg -pthread -lrt
+
+_USTR_LIBS = $(_COMMON_LIBS) -levent -levent_pthreads
+_USTR_SRCS = $(shell ls \
+	libs/*.c \
+	ustreamer/*.c \
+	ustreamer/http/*.c \
+	ustreamer/data/*.c \
+	ustreamer/encoders/cpu/*.c \
+	ustreamer/encoders/hw/*.c \
+	ustreamer/h264/*.c \
+)
+
+_DUMP_LIBS = $(_COMMON_LIBS)
+_DUMP_SRCS = $(shell ls \
+	libs/*.c \
+	dump/*.c \
+)
+
+_BUILD = build
+
+
+define optbool
+$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
+endef
+
+
+ifneq ($(call optbool,$(WITH_GPIO)),)
+_USTR_LIBS += -lgpiod
+override _CFLAGS += -DWITH_GPIO
+_USTR_SRCS += $(shell ls ustreamer/gpio/*.c)
+endif
+
+
+ifneq ($(call optbool,$(WITH_SYSTEMD)),)
+_USTR_LIBS += -lsystemd
+override _CFLAGS += -DWITH_SYSTEMD
+_USTR_SRCS += $(shell ls ustreamer/http/systemd/*.c)
+endif
+
+
+WITH_PTHREAD_NP ?= 1
+ifneq ($(call optbool,$(WITH_PTHREAD_NP)),)
+override _CFLAGS += -DWITH_PTHREAD_NP
+endif
+
+
+WITH_SETPROCTITLE ?= 1
+ifneq ($(call optbool,$(WITH_SETPROCTITLE)),)
+ifeq ($(shell uname -s | tr A-Z a-z),linux)
+_USTR_LIBS += -lbsd
+endif
+override _CFLAGS += -DWITH_SETPROCTITLE
+endif
+
+
+# =====
+all: $(_USTR) $(_DUMP)
+
+
+install: all
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	install -m755 $(_USTR) $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_USTR))
+	install -m755 $(_DUMP) $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_DUMP))
+
+
+install-strip: install
+	strip $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_USTR))
+	strip $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_DUMP))
+
+
+$(_USTR): $(_USTR_SRCS:%.c=$(_BUILD)/%.o)
+	$(info == LD $@)
+	@ $(CC) $^ -o $@ $(_LDFLAGS) $(_USTR_LIBS)
+
+
+$(_DUMP): $(_DUMP_SRCS:%.c=$(_BUILD)/%.o)
+	$(info == LD $@)
+	@ $(CC) $^ -o $@ $(_LDFLAGS) $(_DUMP_LIBS)
+
+
+$(_BUILD)/%.o: %.c
+	$(info -- CC $<)
+	@ mkdir -p $(dir $@) || true
+	@ $(CC) $< -o $@ $(_CFLAGS)
+
+
+clean:
+	rm -rf $(_USTR) $(_DUMP) $(_BUILD)
+
+
+_OBJS = $(_USTR_SRCS:%.c=$(_BUILD)/%.o) $(_DUMP_SRCS:%.c=$(_BUILD)/%.o)
+-include $(_OBJS:%.o=%.d)

src/device.c

@@ -1,878 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "device.h"
-
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdbool.h>
-#include <string.h>
-#include <strings.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <sys/select.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-
-#include <linux/videodev2.h>
-#include <linux/v4l2-controls.h>
-
-#include "tools.h"
-#include "logging.h"
-#include "threading.h"
-#include "xioctl.h"
-#include "picture.h"
-
-
-static const struct {
-	const char *name;
-	const v4l2_std_id standard;
-} _STANDARDS[] = {
-	{"UNKNOWN",	V4L2_STD_UNKNOWN},
-	{"PAL",		V4L2_STD_PAL},
-	{"NTSC",	V4L2_STD_NTSC},
-	{"SECAM",	V4L2_STD_SECAM},
-};
-
-static const struct {
-	const char *name;
-	const unsigned format;
-} _FORMATS[] = {
-	{"YUYV",	V4L2_PIX_FMT_YUYV},
-	{"UYVY",	V4L2_PIX_FMT_UYVY},
-	{"RGB565",	V4L2_PIX_FMT_RGB565},
-	{"RGB24",	V4L2_PIX_FMT_RGB24},
-	{"JPEG",	V4L2_PIX_FMT_MJPEG},
-	{"JPEG",	V4L2_PIX_FMT_JPEG},
-};
-
-static const struct {
-	const char *name;
-	const enum v4l2_memory io_method;
-} _IO_METHODS[] = {
-	{"MMAP",	V4L2_MEMORY_MMAP},
-	{"USERPTR",	V4L2_MEMORY_USERPTR},
-};
-
-
-static int _device_open_check_cap(struct device_t *dev);
-static int _device_open_dv_timings(struct device_t *dev);
-static int _device_apply_dv_timings(struct device_t *dev);
-static int _device_open_format(struct device_t *dev);
-static void _device_open_hw_fps(struct device_t *dev);
-static int _device_open_io_method(struct device_t *dev);
-static int _device_open_io_method_mmap(struct device_t *dev);
-static int _device_open_io_method_userptr(struct device_t *dev);
-static int _device_open_queue_buffers(struct device_t *dev);
-static void _device_open_alloc_picbufs(struct device_t *dev);
-static int _device_apply_resolution(struct device_t *dev, unsigned width, unsigned height);
-
-static void _device_apply_controls(struct device_t *dev);
-static int _device_query_control(struct device_t *dev, struct v4l2_queryctrl *query, const char *name, unsigned cid, bool quiet);
-static void _device_set_control(struct device_t *dev, struct v4l2_queryctrl *query, const char *name, unsigned cid, int value, bool quiet);
-
-static const char *_format_to_string_fourcc(char *buf, size_t size, unsigned format);
-static const char *_format_to_string_nullable(unsigned format);
-static const char *_format_to_string_supported(unsigned format);
-static const char *_standard_to_string(v4l2_std_id standard);
-static const char *_io_method_to_string_supported(enum v4l2_memory io_method);
-
-
-struct device_t *device_init(void) {
-	struct device_runtime_t *run;
-	struct device_t *dev;
-	long cores_sysconf;
-	unsigned cores_available;
-
-	cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
-	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
-	cores_available = max_u(min_u(cores_sysconf, 4), 1);
-
-	A_CALLOC(run, 1);
-	run->fd = -1;
-
-	A_CALLOC(dev, 1);
-	dev->path = "/dev/video0";
-	dev->width = 640;
-	dev->height = 480;
-	dev->format = V4L2_PIX_FMT_YUYV;
-	dev->standard = V4L2_STD_UNKNOWN;
-	dev->n_buffers = cores_available + 1;
-	dev->n_workers = min_u(cores_available, dev->n_buffers);
-	dev->min_frame_size = 128;
-	dev->timeout = 1;
-	dev->error_delay = 1;
-	dev->io_method = V4L2_MEMORY_MMAP;
-	dev->run = run;
-	return dev;
-}
-
-void device_destroy(struct device_t *dev) {
-	free(dev->run);
-	free(dev);
-}
-
-int device_parse_format(const char *str) {
-	for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
-		if (!strcasecmp(str, _FORMATS[index].name)) {
-			return _FORMATS[index].format;
-		}
-	}
-	return FORMAT_UNKNOWN;
-}
-
-v4l2_std_id device_parse_standard(const char *str) {
-	for (unsigned index = 1; index < ARRAY_LEN(_STANDARDS); ++index) {
-		if (!strcasecmp(str, _STANDARDS[index].name)) {
-			return _STANDARDS[index].standard;
-		}
-	}
-	return STANDARD_UNKNOWN;
-}
-
-int device_parse_io_method(const char *str) {
-	for (unsigned index = 0; index < ARRAY_LEN(_IO_METHODS); ++index) {
-		if (!strcasecmp(str, _IO_METHODS[index].name)) {
-			return _IO_METHODS[index].io_method;
-		}
-	}
-	return IO_METHOD_UNKNOWN;
-}
-
-int device_open(struct device_t *dev) {
-	if ((dev->run->fd = open(dev->path, O_RDWR|O_NONBLOCK)) < 0) {
-		LOG_PERROR("Can't open device");
-		goto error;
-	}
-	LOG_INFO("Device fd=%d opened", dev->run->fd);
-
-	if (_device_open_check_cap(dev) < 0) {
-		goto error;
-	}
-	if (_device_open_dv_timings(dev) < 0) {
-		goto error;
-	}
-	if (_device_open_format(dev) < 0) {
-		goto error;
-	}
-	_device_open_hw_fps(dev);
-	if (_device_open_io_method(dev) < 0) {
-		goto error;
-	}
-	if (_device_open_queue_buffers(dev) < 0) {
-		goto error;
-	}
-	_device_open_alloc_picbufs(dev);
-	_device_apply_controls(dev);
-
-	dev->run->n_workers = min_u(dev->run->n_buffers, dev->n_workers);
-
-	LOG_DEBUG("Device fd=%d initialized", dev->run->fd);
-	return 0;
-
-	error:
-		device_close(dev);
-		return -1;
-}
-
-void device_close(struct device_t *dev) {
-	dev->run->n_workers = 0;
-
-	if (dev->run->pictures) {
-		LOG_DEBUG("Releasing picture buffers ...");
-		for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
-			picture_destroy(dev->run->pictures[index]);
-		}
-		free(dev->run->pictures);
-		dev->run->pictures = NULL;
-	}
-
-	if (dev->run->hw_buffers) {
-		LOG_DEBUG("Releasing device buffers ...");
-		for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
-#			define HW_BUFFER(_next) dev->run->hw_buffers[index]._next
-
-			if (dev->io_method == V4L2_MEMORY_MMAP) {
-				if (HW_BUFFER(allocated) > 0 && HW_BUFFER(data) != MAP_FAILED) {
-					if (munmap(HW_BUFFER(data), HW_BUFFER(allocated)) < 0) {
-						LOG_PERROR("Can't unmap device buffer %u", index);
-					}
-				}
-			} else { // V4L2_MEMORY_USERPTR
-				if (HW_BUFFER(data)) {
-					free(HW_BUFFER(data));
-				}
-			}
-			A_MUTEX_DESTROY(&HW_BUFFER(grabbed_mutex));
-
-#			undef HW_BUFFER
-		}
-		dev->run->n_buffers = 0;
-		free(dev->run->hw_buffers);
-		dev->run->hw_buffers = NULL;
-	}
-
-	if (dev->run->fd >= 0) {
-		LOG_DEBUG("Closing device ...");
-		if (close(dev->run->fd) < 0) {
-			LOG_PERROR("Can't close device fd=%d", dev->run->fd);
-		} else {
-			LOG_INFO("Device fd=%d closed", dev->run->fd);
-		}
-		dev->run->fd = -1;
-	}
-}
-
-int device_switch_capturing(struct device_t *dev, bool enable) {
-	if (enable != dev->run->capturing) {
-		enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-		LOG_DEBUG("Calling ioctl(%s) ...", (enable ? "VIDIOC_STREAMON" : "VIDIOC_STREAMOFF"));
-		if (xioctl(dev->run->fd, (enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
-			LOG_PERROR("Unable to %s capturing", (enable ? "start" : "stop"));
-			if (enable) {
-				return -1;
-			}
-		}
-
-		dev->run->capturing = enable;
-		LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
-	}
-    return 0;
-}
-
-int device_select(struct device_t *dev, bool *has_read, bool *has_write, bool *has_error) {
-	struct timeval timeout;
-	int retval;
-
-#	define INIT_FD_SET(_set) \
-		fd_set _set; FD_ZERO(&_set); FD_SET(dev->run->fd, &_set);
-
-	INIT_FD_SET(read_fds);
-	INIT_FD_SET(write_fds);
-	INIT_FD_SET(error_fds);
-
-#	undef INIT_FD_SET
-
-	timeout.tv_sec = dev->timeout;
-	timeout.tv_usec = 0;
-
-	LOG_DEBUG("Calling select() on video device ...");
-
-	retval = select(dev->run->fd + 1, &read_fds, &write_fds, &error_fds, &timeout);
-	if (retval > 0) {
-		*has_read = FD_ISSET(dev->run->fd, &read_fds);
-		*has_write = FD_ISSET(dev->run->fd, &write_fds);
-		*has_error = FD_ISSET(dev->run->fd, &error_fds);
-	} else {
-		*has_read = false;
-		*has_write = false;
-		*has_error = false;
-	}
-
-	LOG_DEBUG("Device select() --> %d", retval);
-	return retval;
-}
-
-int device_grab_buffer(struct device_t *dev) {
-	struct v4l2_buffer buf_info;
-
-	MEMSET_ZERO(buf_info);
-	buf_info.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	buf_info.memory = dev->io_method;
-
-	LOG_DEBUG("Grabbing device buffer ...");
-	if (xioctl(dev->run->fd, VIDIOC_DQBUF, &buf_info) < 0) {
-		LOG_PERROR("Unable to grab device buffer");
-		return -1;
-	}
-
-	LOG_DEBUG("Grabbed new frame in device buffer: index=%u, bytesused=%u",
-		buf_info.index, buf_info.bytesused);
-
-	if (buf_info.index >= dev->run->n_buffers) {
-		LOG_ERROR("V4L2 error: grabbed invalid device buffer: index=%u, nbuffers=%u",
-			buf_info.index, dev->run->n_buffers);
-		return -1;
-	}
-
-#	define HW_BUFFER(_next) dev->run->hw_buffers[buf_info.index]._next
-
-	A_MUTEX_LOCK(&HW_BUFFER(grabbed_mutex));
-	if (HW_BUFFER(grabbed)) {
-		LOG_ERROR("V4L2 error: grabbed device buffer is already used: index=%u, bytesused=%u",
-			buf_info.index, buf_info.bytesused);
-		A_MUTEX_UNLOCK(&HW_BUFFER(grabbed_mutex));
-		return -1;
-	}
-	HW_BUFFER(grabbed) = true;
-	A_MUTEX_UNLOCK(&HW_BUFFER(grabbed_mutex));
-
-	HW_BUFFER(used) = buf_info.bytesused;
-	memcpy(&HW_BUFFER(buf_info), &buf_info, sizeof(struct v4l2_buffer));
-	dev->run->pictures[buf_info.index]->grab_ts = get_now_monotonic();
-
-#	undef HW_BUFFER
-	return buf_info.index;
-}
-
-int device_release_buffer(struct device_t *dev, unsigned index) {
-#	define HW_BUFFER(_next) dev->run->hw_buffers[index]._next
-
-	LOG_DEBUG("Releasing device buffer index=%u ...", index);
-
-	A_MUTEX_LOCK(&HW_BUFFER(grabbed_mutex));
-	if (xioctl(dev->run->fd, VIDIOC_QBUF, &HW_BUFFER(buf_info)) < 0) {
-		LOG_PERROR("Unable to release device buffer index=%u", index);
-		A_MUTEX_UNLOCK(&HW_BUFFER(grabbed_mutex));
-		return -1;
-	}
-	HW_BUFFER(grabbed) = false;
-	A_MUTEX_UNLOCK(&HW_BUFFER(grabbed_mutex));
-	HW_BUFFER(used) = 0;
-
-#	undef HW_BUFFER
-	return 0;
-}
-
-int device_consume_event(struct device_t *dev) {
-	struct v4l2_event event;
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_DQEVENT) ...");
-	if (xioctl(dev->run->fd, VIDIOC_DQEVENT, &event) == 0) {
-		switch (event.type) {
-			case V4L2_EVENT_SOURCE_CHANGE:
-				LOG_INFO("Got V4L2_EVENT_SOURCE_CHANGE: source changed");
-				return -1;
-			case V4L2_EVENT_EOS:
-				LOG_INFO("Got V4L2_EVENT_EOS: end of stream (ignored)");
-				return 0;
-		}
-	} else {
-		LOG_PERROR("Got some V4L2 device event, but where is it? ");
-	}
-	return 0;
-}
-
-static int _device_open_check_cap(struct device_t *dev) {
-	struct v4l2_capability cap;
-	int input = dev->input; // Needs pointer to int for ioctl()
-
-	MEMSET_ZERO(cap);
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_QUERYCAP) ...");
-	if (xioctl(dev->run->fd, VIDIOC_QUERYCAP, &cap) < 0) {
-		LOG_PERROR("Can't query device (VIDIOC_QUERYCAP)");
-		return -1;
-	}
-
-	if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
-		LOG_ERROR("Video capture not supported by the device");
-		return -1;
-	}
-
-	if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
-		LOG_ERROR("Device does not support streaming IO");
-		return -1;
-	}
-
-	LOG_INFO("Using input channel: %d", input);
-	if (xioctl(dev->run->fd, VIDIOC_S_INPUT, &input) < 0) {
-		LOG_ERROR("Can't set input channel");
-		return -1;
-	}
-
-	if (dev->standard != V4L2_STD_UNKNOWN) {
-		LOG_INFO("Using TV standard: %s", _standard_to_string(dev->standard));
-		if (xioctl(dev->run->fd, VIDIOC_S_STD, &dev->standard) < 0) {
-			LOG_ERROR("Can't set video standard");
-			return -1;
-		}
-	} else {
-		LOG_INFO("Using TV standard: DEFAULT");
-	}
-	return 0;
-}
-
-static int _device_open_dv_timings(struct device_t *dev) {
-	_device_apply_resolution(dev, dev->width, dev->height);
-	if (dev->dv_timings) {
-		LOG_DEBUG("Using DV timings");
-
-		if (_device_apply_dv_timings(dev) < 0) {
-			return -1;
-		}
-
-		struct v4l2_event_subscription sub;
-
-		MEMSET_ZERO(sub);
-		sub.type = V4L2_EVENT_SOURCE_CHANGE;
-
-		LOG_DEBUG("Calling ioctl(VIDIOC_SUBSCRIBE_EVENT) ...");
-		if (xioctl(dev->run->fd, VIDIOC_SUBSCRIBE_EVENT, &sub) < 0) {
-			LOG_PERROR("Can't subscribe to V4L2_EVENT_SOURCE_CHANGE");
-			return -1;
-		}
-	}
-	return 0;
-}
-
-static int _device_apply_dv_timings(struct device_t *dev) {
-	struct v4l2_dv_timings dv;
-
-	MEMSET_ZERO(dv);
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_QUERY_DV_TIMINGS) ...");
-	if (xioctl(dev->run->fd, VIDIOC_QUERY_DV_TIMINGS, &dv) == 0) {
-		LOG_INFO("Got new DV timings: resolution=%ux%u, pixclk=%llu",
-			dv.bt.width, dv.bt.height, (unsigned long long)dv.bt.pixelclock); // Issue #11
-
-		LOG_DEBUG("Calling ioctl(VIDIOC_S_DV_TIMINGS) ...");
-		if (xioctl(dev->run->fd, VIDIOC_S_DV_TIMINGS, &dv) < 0) {
-			LOG_PERROR("Failed to set DV timings");
-			return -1;
-		}
-
-		if (_device_apply_resolution(dev, dv.bt.width, dv.bt.height) < 0) {
-			return -1;
-		}
-
-	} else {
-		LOG_DEBUG("Calling ioctl(VIDIOC_QUERYSTD) ...");
-		if (xioctl(dev->run->fd, VIDIOC_QUERYSTD, &dev->standard) == 0) {
-			LOG_INFO("Applying the new VIDIOC_S_STD: %s ...", _standard_to_string(dev->standard));
-			if (xioctl(dev->run->fd, VIDIOC_S_STD, &dev->standard) < 0) {
-				LOG_PERROR("Can't set video standard");
-				return -1;
-			}
-		}
-	}
-	return 0;
-}
-
-static int _device_open_format(struct device_t *dev) {
-	struct v4l2_format fmt;
-
-	MEMSET_ZERO(fmt);
-	fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	fmt.fmt.pix.width = dev->run->width;
-	fmt.fmt.pix.height = dev->run->height;
-	fmt.fmt.pix.pixelformat = dev->format;
-	fmt.fmt.pix.field = V4L2_FIELD_ANY;
-
-	// Set format
-	LOG_DEBUG("Calling ioctl(VIDIOC_S_FMT) ...");
-	if (xioctl(dev->run->fd, VIDIOC_S_FMT, &fmt) < 0) {
-		LOG_PERROR("Unable to set pixelformat=%s, resolution=%ux%u",
-			_format_to_string_supported(dev->format),
-			dev->run->width,
-			dev->run->height);
-		return -1;
-	}
-
-	// Check resolution
-	if (fmt.fmt.pix.width != dev->run->width || fmt.fmt.pix.height != dev->run->height) {
-		LOG_ERROR("Requested resolution=%ux%u is unavailable", dev->run->width, dev->run->height);
-	}
-	if (_device_apply_resolution(dev, fmt.fmt.pix.width, fmt.fmt.pix.height) < 0) {
-		return -1;
-	}
-	LOG_INFO("Using resolution: %ux%u", dev->run->width, dev->run->height);
-
-	// Check format
-	if (fmt.fmt.pix.pixelformat != dev->format) {
-		char format_obtained_str[8];
-		char *format_str_nullable;
-
-		LOG_ERROR("Could not obtain the requested pixelformat=%s; driver gave us %s",
-			_format_to_string_supported(dev->format),
-			_format_to_string_supported(fmt.fmt.pix.pixelformat));
-
-		if ((format_str_nullable = (char *)_format_to_string_nullable(fmt.fmt.pix.pixelformat)) != NULL) {
-			LOG_INFO("Falling back to pixelformat=%s", format_str_nullable);
-		} else {
-			LOG_ERROR("Unsupported pixelformat=%s (fourcc)",
-				_format_to_string_fourcc(format_obtained_str, 8, fmt.fmt.pix.pixelformat));
-			return -1;
-		}
-	}
-
-	dev->run->format = fmt.fmt.pix.pixelformat;
-	LOG_INFO("Using pixelformat: %s", _format_to_string_supported(dev->run->format));
-
-	dev->run->raw_size = fmt.fmt.pix.sizeimage; // Only for userptr
-	return 0;
-}
-
-static void _device_open_hw_fps(struct device_t *dev) {
-	struct v4l2_streamparm setfps;
-
-	dev->run->hw_fps = 0;
-
-	MEMSET_ZERO(setfps);
-	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_G_PARM) ...");
-	if (xioctl(dev->run->fd, VIDIOC_G_PARM, &setfps) < 0) {
-		if (errno == ENOTTY) { // Quiet message for Auvidea B101
-			LOG_INFO("Quierying HW FPS changing is not supported");
-		} else {
-			LOG_PERROR("Unable to query HW FPS changing");
-		}
-		return;
-	}
-
-	if (!(setfps.parm.capture.capability & V4L2_CAP_TIMEPERFRAME)) {
-		LOG_INFO("Changing HW FPS is not supported");
-		return;
-	}
-
-#	define SETFPS_TPF(_next) setfps.parm.capture.timeperframe._next
-
-	MEMSET_ZERO(setfps);
-	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	SETFPS_TPF(numerator) = 1;
-	SETFPS_TPF(denominator) = (dev->desired_fps == 0 ? 255 : dev->desired_fps);
-
-	if (xioctl(dev->run->fd, VIDIOC_S_PARM, &setfps) < 0) {
-		LOG_PERROR("Unable to set HW FPS");
-		return;
-	}
-
-	if (SETFPS_TPF(numerator) != 1) {
-		LOG_ERROR("Invalid HW FPS numerator: %u != 1", SETFPS_TPF(numerator));
-		return;
-	}
-
-	if (SETFPS_TPF(denominator) == 0) { // Не знаю, бывает ли так, но пускай на всякий случай
-		LOG_ERROR("Invalid HW FPS denominator: 0");
-		return;
-	}
-
-	dev->run->hw_fps = SETFPS_TPF(denominator);
-	if (dev->desired_fps != dev->run->hw_fps) {
-		LOG_INFO("Using HW FPS: %u -> %u (coerced)", dev->desired_fps, dev->run->hw_fps);
-	} else {
-		LOG_INFO("Using HW FPS: %u", dev->run->hw_fps);
-	}
-
-#	undef SETFPS_TPF
-}
-
-static int _device_open_io_method(struct device_t *dev) {
-	LOG_INFO("Using IO method: %s", _io_method_to_string_supported(dev->io_method));
-	switch (dev->io_method) {
-		case V4L2_MEMORY_MMAP: return _device_open_io_method_mmap(dev);
-		case V4L2_MEMORY_USERPTR: return _device_open_io_method_userptr(dev);
-		default: assert(0 && "Unsupported IO method");
-	}
-	return -1;
-}
-
-static int _device_open_io_method_mmap(struct device_t *dev) {
-	struct v4l2_requestbuffers req;
-
-	MEMSET_ZERO(req);
-	req.count = dev->n_buffers;
-	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	req.memory = V4L2_MEMORY_MMAP;
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_REQBUFS) for V4L2_MEMORY_MMAP ...");
-	if (xioctl(dev->run->fd, VIDIOC_REQBUFS, &req) < 0) {
-		LOG_PERROR("Device '%s' doesn't support V4L2_MEMORY_MMAP", dev->path);
-		return -1;
-	}
-
-	if (req.count < 1) {
-		LOG_ERROR("Insufficient buffer memory: %u", req.count);
-		return -1;
-	} else {
-		LOG_INFO("Requested %u device buffers, got %u", dev->n_buffers, req.count);
-	}
-
-	LOG_DEBUG("Allocating device buffers ...");
-
-	A_CALLOC(dev->run->hw_buffers, req.count);
-	for (dev->run->n_buffers = 0; dev->run->n_buffers < req.count; ++dev->run->n_buffers) {
-		struct v4l2_buffer buf_info;
-
-		MEMSET_ZERO(buf_info);
-		buf_info.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		buf_info.memory = V4L2_MEMORY_MMAP;
-		buf_info.index = dev->run->n_buffers;
-
-		LOG_DEBUG("Calling ioctl(VIDIOC_QUERYBUF) for device buffer %u ...", dev->run->n_buffers);
-		if (xioctl(dev->run->fd, VIDIOC_QUERYBUF, &buf_info) < 0) {
-			LOG_PERROR("Can't VIDIOC_QUERYBUF");
-			return -1;
-		}
-
-#		define HW_BUFFER(_next) dev->run->hw_buffers[dev->run->n_buffers]._next
-
-		A_MUTEX_INIT(&HW_BUFFER(grabbed_mutex));
-
-		LOG_DEBUG("Mapping device buffer %u ...", dev->run->n_buffers);
-		HW_BUFFER(data) = mmap(NULL, buf_info.length, PROT_READ|PROT_WRITE, MAP_SHARED, dev->run->fd, buf_info.m.offset);
-		if (HW_BUFFER(data) == MAP_FAILED) {
-			LOG_PERROR("Can't map device buffer %u", dev->run->n_buffers);
-			return -1;
-		}
-		HW_BUFFER(allocated) = buf_info.length;
-
-#		undef HW_BUFFER
-	}
-	return 0;
-}
-
-static int _device_open_io_method_userptr(struct device_t *dev) {
-	struct v4l2_requestbuffers req;
-	unsigned page_size = getpagesize();
-	unsigned buf_size = align_size(dev->run->raw_size, page_size);
-
-	MEMSET_ZERO(req);
-	req.count = dev->n_buffers;
-	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	req.memory = V4L2_MEMORY_USERPTR;
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_REQBUFS) for V4L2_MEMORY_USERPTR ...");
-	if (xioctl(dev->run->fd, VIDIOC_REQBUFS, &req) < 0) {
-		LOG_PERROR("Device '%s' doesn't support V4L2_MEMORY_USERPTR", dev->path);
-		return -1;
-	}
-
-	if (req.count < 1) {
-		LOG_ERROR("Insufficient buffer memory: %u", req.count);
-		return -1;
-	} else {
-		LOG_INFO("Requested %u device buffers, got %u", dev->n_buffers, req.count);
-	}
-
-	LOG_DEBUG("Allocating device buffers ...");
-
-	A_CALLOC(dev->run->hw_buffers, req.count);
-	for (dev->run->n_buffers = 0; dev->run->n_buffers < req.count; ++dev->run->n_buffers) {
-#       define HW_BUFFER(_next) dev->run->hw_buffers[dev->run->n_buffers]._next
-
-		assert(HW_BUFFER(data) = aligned_alloc(page_size, buf_size));
-		memset(HW_BUFFER(data), 0, buf_size);
-		HW_BUFFER(allocated) = buf_size;
-
-#		undef HW_BUFFER
-	}
-	return 0;
-}
-
-static int _device_open_queue_buffers(struct device_t *dev) {
-	for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
-		struct v4l2_buffer buf_info;
-
-		MEMSET_ZERO(buf_info);
-		buf_info.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		buf_info.memory = dev->io_method;
-		buf_info.index = index;
-		if (dev->io_method == V4L2_MEMORY_USERPTR) {
-			buf_info.m.userptr = (unsigned long)dev->run->hw_buffers[index].data;
-			buf_info.length = dev->run->hw_buffers[index].allocated;
-		}
-
-		LOG_DEBUG("Calling ioctl(VIDIOC_QBUF) for buffer %u ...", index);
-		if (xioctl(dev->run->fd, VIDIOC_QBUF, &buf_info) < 0) {
-			LOG_PERROR("Can't VIDIOC_QBUF");
-			return -1;
-		}
-	}
-	return 0;
-}
-
-static void _device_open_alloc_picbufs(struct device_t *dev) {
-	size_t picture_size = picture_get_generous_size(dev->run->width, dev->run->height);
-
-	LOG_DEBUG("Allocating picture buffers ...");
-	A_CALLOC(dev->run->pictures, dev->run->n_buffers);
-
-	for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
-		dev->run->pictures[index] = picture_init();
-		LOG_DEBUG("Pre-allocating picture buffer %u sized %zu bytes... ", index, picture_size);
-		picture_realloc_data(dev->run->pictures[index], picture_size);
-	}
-}
-
-static int _device_apply_resolution(struct device_t *dev, unsigned width, unsigned height) {
-	// Тут VIDEO_MIN_* не используются из-за странностей минимального разрешения при отсутствии сигнала
-	// у некоторых устройств, например Auvidea B101
-	if (
-		width == 0 || width > VIDEO_MAX_WIDTH
-		|| height == 0 || height > VIDEO_MAX_HEIGHT
-	) {
-		LOG_ERROR("Requested forbidden resolution=%ux%u: min=1x1, max=%ux%u",
-			width, height, VIDEO_MAX_WIDTH, VIDEO_MAX_HEIGHT);
-		return -1;
-	}
-	dev->run->width = width;
-	dev->run->height = height;
-	return 0;
-}
-
-static void _device_apply_controls(struct device_t *dev) {
-#	define SET_CID_VALUE(_cid, _field, _value, _quiet) { \
-			struct v4l2_queryctrl query; \
-			if (_device_query_control(dev, &query, #_field, _cid, _quiet) == 0) { \
-				_device_set_control(dev, &query, #_field, _cid, _value, _quiet); \
-			} \
-		}
-
-#	define SET_CID_DEFAULT(_cid, _field, _quiet) { \
-			struct v4l2_queryctrl query; \
-			if (_device_query_control(dev, &query, #_field, _cid, _quiet) == 0) { \
-				_device_set_control(dev, &query, #_field, _cid, query.default_value, _quiet); \
-			} \
-		}
-
-#	define CONTROL_MANUAL_CID(_cid, _field) { \
-			if (dev->ctl._field.mode == CTL_MODE_VALUE) { \
-				SET_CID_VALUE(_cid, _field, dev->ctl._field.value, false); \
-			} else if (dev->ctl._field.mode == CTL_MODE_DEFAULT) { \
-				SET_CID_DEFAULT(_cid, _field, false); \
-			} \
-		}
-
-#	define CONTROL_AUTO_CID(_cid_auto, _cid_manual, _field) { \
-			if (dev->ctl._field.mode == CTL_MODE_VALUE) { \
-				SET_CID_VALUE(_cid_auto, _field##_auto, 0, true); \
-				SET_CID_VALUE(_cid_manual, _field, dev->ctl._field.value, false); \
-			} else if (dev->ctl._field.mode == CTL_MODE_AUTO) { \
-				SET_CID_VALUE(_cid_auto, _field##_auto, 1, false); \
-			} else if (dev->ctl._field.mode == CTL_MODE_DEFAULT) { \
-				SET_CID_VALUE(_cid_auto, _field##_auto, 0, true); /* Reset inactive flag */ \
-				SET_CID_DEFAULT(_cid_manual, _field, false); \
-				SET_CID_DEFAULT(_cid_auto, _field##_auto, false); \
-			} \
-		}
-
-	CONTROL_AUTO_CID	(V4L2_CID_AUTOBRIGHTNESS,		V4L2_CID_BRIGHTNESS,				brightness);
-	CONTROL_MANUAL_CID	(								V4L2_CID_CONTRAST,					contrast);
-	CONTROL_MANUAL_CID	(								V4L2_CID_SATURATION,				saturation);
-	CONTROL_AUTO_CID	(V4L2_CID_HUE_AUTO,				V4L2_CID_HUE,						hue);
-	CONTROL_MANUAL_CID	(								V4L2_CID_GAMMA,						gamma);
-	CONTROL_MANUAL_CID	(								V4L2_CID_SHARPNESS,					sharpness);
-	CONTROL_MANUAL_CID	(								V4L2_CID_BACKLIGHT_COMPENSATION,	backlight_compensation);
-	CONTROL_AUTO_CID	(V4L2_CID_AUTO_WHITE_BALANCE,	V4L2_CID_WHITE_BALANCE_TEMPERATURE,	white_balance);
-	CONTROL_AUTO_CID	(V4L2_CID_AUTOGAIN,				V4L2_CID_GAIN,						gain);
-	CONTROL_MANUAL_CID	(								V4L2_CID_COLORFX,					color_effect);
-	CONTROL_MANUAL_CID	(								V4L2_CID_VFLIP,						flip_vertical);
-	CONTROL_MANUAL_CID	(								V4L2_CID_HFLIP,						flip_horizontal);
-
-#	undef CONTROL_AUTO_CID
-#	undef CONTROL_MANUAL_CID
-#	undef SET_CID_DEFAULT
-#	undef SET_CID_VALUE
-}
-
-static int _device_query_control(struct device_t *dev, struct v4l2_queryctrl *query, const char *name, unsigned cid, bool quiet) {
-	// cppcheck-suppress redundantPointerOp
-	MEMSET_ZERO(*query);
-	query->id = cid;
-
-	if (xioctl(dev->run->fd, VIDIOC_QUERYCTRL, query) < 0 || query->flags & V4L2_CTRL_FLAG_DISABLED) {
-		if (!quiet) {
-			LOG_ERROR("Changing control %s is unsupported", name);
-		}
-		return -1;
-	}
-	return 0;
-}
-
-static void _device_set_control(struct device_t *dev, struct v4l2_queryctrl *query, const char *name, unsigned cid, int value, bool quiet) {
-	struct v4l2_control ctl;
-
-	if (value < query->minimum || value > query->maximum || value % query->step != 0) {
-		if (!quiet) {
-			LOG_ERROR("Invalid value %d of control %s: min=%d, max=%d, default=%d, step=%u",
-				value, name, query->minimum, query->maximum, query->default_value, query->step);
-		}
-		return;
-	}
-
-	MEMSET_ZERO(ctl);
-	ctl.id = cid;
-	ctl.value = value;
-
-	if (xioctl(dev->run->fd, VIDIOC_S_CTRL, &ctl) < 0) {
-		if (!quiet) {
-			LOG_PERROR("Can't set control %s", name);
-		}
-	} else if (!quiet) {
-		LOG_INFO("Applying control %s: %d", name, ctl.value);
-	}
-}
-
-static const char *_format_to_string_fourcc(char *buf, size_t size, unsigned format) {
-	assert(size >= 8);
-	buf[0] = format & 0x7F;
-	buf[1] = (format >> 8) & 0x7F;
-	buf[2] = (format >> 16) & 0x7F;
-	buf[3] = (format >> 24) & 0x7F;
-	if (format & ((unsigned)1 << 31)) {
-		buf[4] = '-';
-		buf[5] = 'B';
-		buf[6] = 'E';
-		buf[7] = '\0';
-	} else {
-		buf[4] = '\0';
-	}
-	return buf;
-}
-
-static const char *_format_to_string_nullable(unsigned format) {
-    for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
-		if (format == _FORMATS[index].format) {
-			return _FORMATS[index].name;
-		}
-    }
-    return NULL;
-}
-
-static const char *_format_to_string_supported(unsigned format) {
-	const char *format_str = _format_to_string_nullable(format);
-	return (format_str == NULL ? "unsupported" : format_str);
-}
-
-static const char *_standard_to_string(v4l2_std_id standard) {
-	for (unsigned index = 0; index < ARRAY_LEN(_STANDARDS); ++index) {
-		if (standard == _STANDARDS[index].standard) {
-			return _STANDARDS[index].name;
-		}
-	}
-	return _STANDARDS[0].name;
-}
-
-static const char *_io_method_to_string_supported(enum v4l2_memory io_method) {
-	for (unsigned index = 0; index < ARRAY_LEN(_IO_METHODS); ++index) {
-		if (io_method == _IO_METHODS[index].io_method) {
-			return _IO_METHODS[index].name;
-		}
-	}
-	return "unsupported";
-}

src/dump/file.c

@@ -0,0 +1,79 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "file.h"
+
+
+output_file_s *output_file_init(const char *path, bool json) {
+	output_file_s *output;
+	A_CALLOC(output, 1);
+
+	if (!strcmp(path, "-")) {
+		LOG_INFO("Using output: <stdout>");
+		output->fp = stdout;
+	} else {
+		LOG_INFO("Using output: %s", path);
+		if ((output->fp = fopen(path, "wb")) == NULL) {
+			LOG_PERROR("Can't open output file");
+			goto error;
+		}
+	}
+
+	output->json = json;
+	return output;
+
+	error:
+		output_file_destroy(output);
+		return NULL;
+}
+
+void output_file_write(void *v_output, const frame_s *frame) {
+	output_file_s *output = (output_file_s *)v_output;
+	if (output->json) {
+		base64_encode(frame->data, frame->used, &output->base64_data, &output->base64_allocated);
+		fprintf(output->fp,
+			"{\"size\": %zu, \"width\": %u, \"height\": %u,"
+			" \"format\": %u, \"stride\": %u, \"online\": %u,"
+			" \"grab_ts\": %.3Lf, \"encode_begin_ts\": %.3Lf, \"encode_end_ts\": %.3Lf,"
+			" \"data\": \"%s\"}\n",
+			frame->used, frame->width, frame->height,
+			frame->format, frame->stride, frame->online,
+			frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts,
+			output->base64_data);
+	} else {
+		fwrite(frame->data, 1, frame->used, output->fp);
+	}
+	fflush(output->fp);
+}
+
+void output_file_destroy(void *v_output) {
+	output_file_s *output = (output_file_s *)v_output;
+	if (output->base64_data) {
+		free(output->base64_data);
+	}
+	if (output->fp && output->fp != stdout) {
+		if (fclose(output->fp) < 0) {
+			LOG_PERROR("Can't close output file");
+		}
+	}
+	free(output);
+}

src/dump/file.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,19 +22,28 @@
 
 #pragma once
 
-#include "device.h"
-#include "encoder.h"
-#include "http/server.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+
+#include <sys/types.h>
+
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/frame.h"
+#include "../libs/base64.h"
 
 
-struct options_t {
-	int		argc;
-	char	**argv;
-	char	**argv_copy;
-};
+typedef struct {
+	const char *path;
+	bool		json;
+
+	FILE		*fp;
+	char		*base64_data;
+	size_t		base64_allocated;
+} output_file_s;
 
 
-struct options_t *options_init(int argc, char *argv[]);
-void options_destroy(struct options_t *options);
-
-int options_parse(struct options_t *options, struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server);
+output_file_s *output_file_init(const char *path, bool json);
+void output_file_write(void *v_output, const frame_s *frame);
+void output_file_destroy(void *v_output);

src/dump/main.c

@@ -0,0 +1,346 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <signal.h>
+#include <limits.h>
+#include <float.h>
+#include <getopt.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "../libs/config.h"
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/frame.h"
+#include "../libs/memsink.h"
+#include "../libs/options.h"
+
+#include "file.h"
+
+
+enum _OPT_VALUES {
+	_O_SINK = 's',
+	_O_SINK_TIMEOUT = 't',
+	_O_OUTPUT = 'o',
+	_O_OUTPUT_JSON = 'j',
+	_O_COUNT = 'c',
+	_O_INTERVAL = 'i',
+
+	_O_HELP = 'h',
+	_O_VERSION = 'v',
+
+	_O_LOG_LEVEL = 10000,
+	_O_PERF,
+	_O_VERBOSE,
+	_O_DEBUG,
+	_O_FORCE_LOG_COLORS,
+	_O_NO_LOG_COLORS,
+};
+
+static const struct option _LONG_OPTS[] = {
+	{"sink",				required_argument,	NULL,	_O_SINK},
+	{"sink-timeout",		required_argument,	NULL,	_O_SINK_TIMEOUT},
+	{"output",				required_argument,	NULL,	_O_OUTPUT},
+	{"output-json",			no_argument,		NULL,	_O_OUTPUT_JSON},
+	{"count",				required_argument,	NULL,	_O_COUNT},
+	{"interval",			required_argument,	NULL,	_O_INTERVAL},
+
+	{"log-level",			required_argument,	NULL,	_O_LOG_LEVEL},
+	{"perf",				no_argument,		NULL,	_O_PERF},
+	{"verbose",				no_argument,		NULL,	_O_VERBOSE},
+	{"debug",				no_argument,		NULL,	_O_DEBUG},
+	{"force-log-colors",	no_argument,		NULL,	_O_FORCE_LOG_COLORS},
+	{"no-log-colors",		no_argument,		NULL,	_O_NO_LOG_COLORS},
+
+	{"help",				no_argument,		NULL,	_O_HELP},
+	{"version",				no_argument,		NULL,	_O_VERSION},
+
+	{NULL, 0, NULL, 0},
+};
+
+
+volatile bool global_stop = false;
+
+
+typedef struct {
+	void *v_output;
+	void (*write)(void *v_output, const frame_s *frame);
+	void (*destroy)(void *v_output);
+} _output_context_s;
+
+
+static void _signal_handler(int signum);
+static void _install_signal_handlers(void);
+
+static int _dump_sink(
+	const char *sink_name, unsigned sink_timeout,
+	long long count, long double interval,
+	_output_context_s *ctx);
+
+static void _help(FILE *fp);
+
+
+int main(int argc, char *argv[]) {
+	LOGGING_INIT;
+	A_THREAD_RENAME("main");
+
+	char *sink_name = NULL;
+	unsigned sink_timeout = 1;
+	char *output_path = NULL;
+	bool output_json = false;
+	long long count = 0;
+	long double interval = 0;
+
+#	define OPT_SET(_dest, _value) { \
+			_dest = _value; \
+			break; \
+		}
+
+#	define OPT_NUMBER(_name, _dest, _min, _max, _base) { \
+			errno = 0; char *_end = NULL; long long _tmp = strtoll(optarg, &_end, _base); \
+			if (errno || *_end || _tmp < _min || _tmp > _max) { \
+				printf("Invalid value for '%s=%s': min=%lld, max=%lld\n", _name, optarg, (long long)_min, (long long)_max); \
+				return 1; \
+			} \
+			_dest = _tmp; \
+			break; \
+		}
+
+#	define OPT_LDOUBLE(_name, _dest, _min, _max) { \
+			errno = 0; char *_end = NULL; long double _tmp = strtold(optarg, &_end); \
+			if (errno || *_end || _tmp < _min || _tmp > _max) { \
+				printf("Invalid value for '%s=%s': min=%Lf, max=%Lf\n", _name, optarg, (long double)_min, (long double)_max); \
+				return 1; \
+			} \
+			_dest = _tmp; \
+			break; \
+		}
+
+	char short_opts[128];
+	build_short_options(_LONG_OPTS, short_opts, 128);
+
+	for (int ch; (ch = getopt_long(argc, argv, short_opts, _LONG_OPTS, NULL)) >= 0;) {
+		switch (ch) {
+			case _O_SINK:			OPT_SET(sink_name, optarg);
+			case _O_SINK_TIMEOUT:	OPT_NUMBER("--sink-timeout", sink_timeout, 1, 60, 0);
+			case _O_OUTPUT:			OPT_SET(output_path, optarg);
+			case _O_OUTPUT_JSON:	OPT_SET(output_json, true);
+			case _O_COUNT:			OPT_NUMBER("--count", count, 0, LLONG_MAX, 0);
+			case _O_INTERVAL:		OPT_LDOUBLE("--interval", interval, 0, 60);
+
+			case _O_LOG_LEVEL:			OPT_NUMBER("--log-level", us_log_level, LOG_LEVEL_INFO, LOG_LEVEL_DEBUG, 0);
+			case _O_PERF:				OPT_SET(us_log_level, LOG_LEVEL_PERF);
+			case _O_VERBOSE:			OPT_SET(us_log_level, LOG_LEVEL_VERBOSE);
+			case _O_DEBUG:				OPT_SET(us_log_level, LOG_LEVEL_DEBUG);
+			case _O_FORCE_LOG_COLORS:	OPT_SET(us_log_colored, true);
+			case _O_NO_LOG_COLORS:		OPT_SET(us_log_colored, false);
+
+			case _O_HELP:		_help(stdout); return 0;
+			case _O_VERSION:	puts(VERSION); return 0;
+
+			case 0:		break;
+			default:	return 1;
+		}
+	}
+
+#	undef OPT_LDOUBLE
+#	undef OPT_NUMBER
+#	undef OPT_SET
+
+	if (sink_name == NULL || sink_name[0] == '\0') {
+		puts("Missing option --sink. See --help for details.");
+		return 1;
+	}
+
+	_output_context_s ctx = {0};
+
+	if (output_path && output_path[0] != '\0') {
+		if ((ctx.v_output = (void *)output_file_init(output_path, output_json)) == NULL) {
+			return 1;
+		}
+		ctx.write = output_file_write;
+		ctx.destroy = output_file_destroy;
+	}
+
+	_install_signal_handlers();
+	int retval = abs(_dump_sink(sink_name, sink_timeout, count, interval, &ctx));
+	if (ctx.v_output && ctx.destroy) {
+		ctx.destroy(ctx.v_output);
+	}
+	return retval;
+}
+
+
+static void _signal_handler(int signum) {
+	switch (signum) {
+		case SIGTERM:	LOG_INFO_NOLOCK("===== Stopping by SIGTERM ====="); break;
+		case SIGINT:	LOG_INFO_NOLOCK("===== Stopping by SIGINT ====="); break;
+		case SIGPIPE:	LOG_INFO_NOLOCK("===== Stopping by SIGPIPE ====="); break;
+		default:		LOG_INFO_NOLOCK("===== Stopping by %d =====", signum); break;
+	}
+	global_stop = true;
+}
+
+static void _install_signal_handlers(void) {
+	struct sigaction sig_act = {0};
+
+	assert(!sigemptyset(&sig_act.sa_mask));
+	sig_act.sa_handler = _signal_handler;
+	assert(!sigaddset(&sig_act.sa_mask, SIGINT));
+	assert(!sigaddset(&sig_act.sa_mask, SIGTERM));
+	assert(!sigaddset(&sig_act.sa_mask, SIGPIPE));
+
+	LOG_DEBUG("Installing SIGINT handler ...");
+	assert(!sigaction(SIGINT, &sig_act, NULL));
+
+	LOG_DEBUG("Installing SIGTERM handler ...");
+	assert(!sigaction(SIGTERM, &sig_act, NULL));
+
+	LOG_DEBUG("Installing SIGTERM handler ...");
+	assert(!sigaction(SIGPIPE, &sig_act, NULL));
+}
+
+static int _dump_sink(
+	const char *sink_name, unsigned sink_timeout,
+	long long count, long double interval,
+	_output_context_s *ctx) {
+
+	if (count == 0) {
+		count = -1;
+	}
+
+	useconds_t interval_us = interval * 1000000;
+
+	frame_s *frame = frame_init();
+	memsink_s *sink = NULL;
+
+	if ((sink = memsink_init("input", sink_name, false, 0, false, 0, sink_timeout)) == NULL) {
+		goto error;
+	}
+
+	unsigned fps = 0;
+	unsigned fps_accum = 0;
+	long long fps_second = 0;
+
+	long double last_ts = 0;
+
+	while (!global_stop) {
+		int error = memsink_client_get(sink, frame);
+		if (error == 0) {
+			const long double now = get_now_monotonic();
+			const long long now_second = floor_ms(now);
+
+			char fourcc_str[8];
+			LOG_VERBOSE("Frame: size=%zu, res=%ux%u, fourcc=%s, stride=%u, online=%d, key=%d, latency=%.3Lf, diff=%.3Lf",
+				frame->used, frame->width, frame->height,
+				fourcc_to_string(frame->format, fourcc_str, 8),
+				frame->stride, frame->online, frame->key,
+				now - frame->grab_ts, (last_ts ? now - last_ts : 0));
+			last_ts = now;
+
+			LOG_DEBUG("       grab_ts=%.3Lf, encode_begin_ts=%.3Lf, encode_end_ts=%.3Lf",
+				frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts);
+
+			if (now_second != fps_second) {
+				fps = fps_accum;
+				fps_accum = 0;
+				fps_second = now_second;
+				LOG_PERF_FPS("A new second has come; captured_fps=%u", fps);
+			}
+			fps_accum += 1;
+
+			if (ctx->v_output) {
+				ctx->write(ctx->v_output, frame);
+			}
+
+			if (count >= 0) {
+				--count;
+				if (count <= 0) {
+					break;
+				}
+			}
+
+			if (interval_us > 0) {
+				usleep(interval_us);
+			}
+		} else if (error == -2) {
+			usleep(1000);
+		} else {
+			goto error;
+		}
+	}
+
+	int retval = 0;
+	goto ok;
+
+	error:
+		retval = -1;
+
+	ok:
+		if (sink) {
+			memsink_destroy(sink);
+		}
+		frame_destroy(frame);
+
+		LOG_INFO("Bye-bye");
+		return retval;
+}
+
+static void _help(FILE *fp) {
+#	define SAY(_msg, ...) fprintf(fp, _msg "\n", ##__VA_ARGS__)
+	SAY("\nuStreamer-dump - Dump uStreamer's memory sink to file");
+	SAY("═════════════════════════════════════════════════════");
+	SAY("Version: %s; license: GPLv3", VERSION);
+	SAY("Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com>\n");
+	SAY("Example:");
+	SAY("════════");
+	SAY("    ustreamer-dump --sink test --output - \\");
+	SAY("        | ffmpeg -use_wallclock_as_timestamps 1 -i pipe: -c:v libx264 test.mp4\n");
+	SAY("Sink options:");
+	SAY("═════════════");
+	SAY("    -s|--sink <name>  ──────── Memory sink ID. No default.\n");
+	SAY("    -t|--sink-timeout <sec>  ─ Timeout for the upcoming frame. Default: 1.\n");
+	SAY("    -o|--output <filename> ─── Filename to dump output to. Use '-' for stdout. Default: just consume the sink.\n");
+	SAY("    -j|--output-json  ──────── Format output as JSON. Required option --output. Default: disabled.\n");
+	SAY("    -c|--count  <N>  ───────── Limit the number of frames. Default: 0 (infinite).\n");
+	SAY("    -i|--interval <sec>  ───── Delay between reading frames (float). Default: 0.\n");
+	SAY("Logging options:");
+	SAY("════════════════");
+	SAY("    --log-level <N>  ──── Verbosity level of messages from 0 (info) to 3 (debug).");
+	SAY("                          Enabling debugging messages can slow down the program.");
+	SAY("                          Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).");
+	SAY("                          Default: %d.\n", us_log_level);
+	SAY("    --perf  ───────────── Enable performance messages (same as --log-level=1). Default: disabled.\n");
+	SAY("    --verbose  ────────── Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n");
+	SAY("    --debug  ──────────── Enable debug messages and lower (same as --log-level=3). Default: disabled.\n");
+	SAY("    --force-log-colors  ─ Force color logging. Default: colored if stderr is a TTY.\n");
+	SAY("    --no-log-colors  ──── Disable color logging. Default: ditto.\n");
+	SAY("Help options:");
+	SAY("═════════════");
+	SAY("    -h|--help  ─────── Print this text and exit.\n");
+	SAY("    -v|--version  ──── Print version and exit.\n");
+#	undef SAY
+}

src/encoder.c

@@ -1,241 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "encoder.h"
-
-#include <stdlib.h>
-#include <stdbool.h>
-#include <strings.h>
-#include <assert.h>
-
-#include <linux/videodev2.h>
-
-#include "tools.h"
-#include "threading.h"
-#include "logging.h"
-#include "device.h"
-
-#include "encoders/cpu/encoder.h"
-#include "encoders/hw/encoder.h"
-#ifdef WITH_OMX
-#	include "encoders/omx/encoder.h"
-#endif
-
-
-static const struct {
-	const char *name;
-	const enum encoder_type_t type;
-} _ENCODER_TYPES[] = {
-	{"CPU",	ENCODER_TYPE_CPU},
-	{"HW",	ENCODER_TYPE_HW},
-#	ifdef WITH_OMX
-	{"OMX",	ENCODER_TYPE_OMX},
-#	endif
-};
-
-
-struct encoder_t *encoder_init(void) {
-	struct encoder_runtime_t *run;
-	struct encoder_t *encoder;
-
-	A_CALLOC(run, 1);
-	run->type = ENCODER_TYPE_CPU;
-	run->quality = 80;
-	A_MUTEX_INIT(&run->mutex);
-
-	A_CALLOC(encoder, 1);
-	encoder->type = run->type;
-	encoder->quality = run->quality;
-	encoder->run = run;
-	return encoder;
-}
-
-void encoder_destroy(struct encoder_t *encoder) {
-#	ifdef WITH_OMX
-	if (encoder->run->omxs) {
-		for (unsigned index = 0; index < encoder->run->n_omxs; ++index) {
-			if (encoder->run->omxs[index]) {
-				omx_encoder_destroy(encoder->run->omxs[index]);
-			}
-		}
-		free(encoder->run->omxs);
-	}
-#	endif
-	A_MUTEX_DESTROY(&encoder->run->mutex);
-	free(encoder->run);
-	free(encoder);
-}
-
-enum encoder_type_t encoder_parse_type(const char *str) {
-	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
-		if (!strcasecmp(str, _ENCODER_TYPES[index].name)) {
-			return _ENCODER_TYPES[index].type;
-		}
-	}
-	return ENCODER_TYPE_UNKNOWN;
-}
-
-const char *encoder_type_to_string(enum encoder_type_t type) {
-	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
-		if (_ENCODER_TYPES[index].type == type) {
-			return _ENCODER_TYPES[index].name;
-		}
-	}
-	return _ENCODER_TYPES[0].name;
-}
-
-void encoder_prepare(struct encoder_t *encoder, struct device_t *dev) {
-	enum encoder_type_t type = (encoder->run->cpu_forced ? ENCODER_TYPE_CPU : encoder->type);
-	unsigned quality = encoder->quality;
-	bool cpu_forced = false;
-
-	if ((dev->run->format == V4L2_PIX_FMT_MJPEG || dev->run->format == V4L2_PIX_FMT_JPEG) && type != ENCODER_TYPE_HW) {
-		LOG_INFO("Switching to HW encoder because the input format is (M)JPEG");
-		type = ENCODER_TYPE_HW;
-	}
-
-	if (type == ENCODER_TYPE_HW) {
-		if (dev->run->format != V4L2_PIX_FMT_MJPEG && dev->run->format != V4L2_PIX_FMT_JPEG) {
-			LOG_INFO("Switching to CPU encoder because the input format is not (M)JPEG");
-			goto use_cpu;
-		}
-
-		if (hw_encoder_prepare(dev, quality) < 0) {
-			quality = 0;
-		}
-
-		dev->run->n_workers = 1;
-	}
-#	ifdef WITH_OMX
-	else if (type == ENCODER_TYPE_OMX) {
-		for (unsigned index = 0; index < encoder->n_glitched_resolutions; ++index) {
-			if (
-				encoder->glitched_resolutions[index][0] == dev->run->width
-				&& encoder->glitched_resolutions[index][1] == dev->run->height
-			) {
-				LOG_INFO("Switching to CPU encoder the resolution %ux%u marked as glitchy for OMX",
-					dev->run->width, dev->run->height);
-				goto use_cpu;
-			}
-		}
-
-		LOG_DEBUG("Preparing OMX encoder ...");
-
-		if (dev->run->n_workers > OMX_MAX_ENCODERS) {
-			LOG_INFO("OMX encoder sets limit for worker threads: %u", OMX_MAX_ENCODERS);
-			dev->run->n_workers = OMX_MAX_ENCODERS;
-		}
-
-		if (encoder->run->omxs == NULL) {
-			A_CALLOC(encoder->run->omxs, OMX_MAX_ENCODERS);
-		}
-
-		// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
-		for (; encoder->run->n_omxs < dev->run->n_workers; ++encoder->run->n_omxs) {
-			if ((encoder->run->omxs[encoder->run->n_omxs] = omx_encoder_init()) == NULL) {
-				LOG_ERROR("Can't initialize OMX encoder, falling back to CPU");
-				goto force_cpu;
-			}
-		}
-
-		for (unsigned index = 0; index < encoder->run->n_omxs; ++index) {
-			if (omx_encoder_prepare(encoder->run->omxs[index], dev, quality) < 0) {
-				LOG_ERROR("Can't prepare OMX encoder, falling back to CPU");
-				goto force_cpu;
-			}
-		}
-	}
-#	endif
-
-	goto ok;
-
-#	pragma GCC diagnostic ignored "-Wunused-label"
-#	pragma GCC diagnostic push
-	// cppcheck-suppress unusedLabel
-	force_cpu:
-		cpu_forced = true;
-#	pragma GCC diagnostic pop
-
-	use_cpu:
-		type = ENCODER_TYPE_CPU;
-		quality = encoder->quality;
-
-	ok:
-		if (quality == 0) {
-			LOG_INFO("Using JPEG quality: encoder default");
-		} else {
-			LOG_INFO("Using JPEG quality: %u%%", quality);
-		}
-
-		A_MUTEX_LOCK(&encoder->run->mutex);
-		encoder->run->type = type;
-		encoder->run->quality = quality;
-		if (cpu_forced) {
-			encoder->run->cpu_forced = true;
-		}
-		A_MUTEX_UNLOCK(&encoder->run->mutex);
-}
-
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic push
-int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev, unsigned worker_number, unsigned buf_index) {
-#pragma GCC diagnostic pop
-
-	assert(encoder->run->type != ENCODER_TYPE_UNKNOWN);
-	assert(dev->run->hw_buffers[buf_index].used > 0);
-
-	dev->run->pictures[buf_index]->encode_begin_ts = get_now_monotonic();
-
-	if (encoder->run->type == ENCODER_TYPE_CPU) {
-		LOG_VERBOSE("Compressing buffer %u using CPU", buf_index);
-		cpu_encoder_compress_buffer(dev, buf_index, encoder->run->quality);
-	} else if (encoder->run->type == ENCODER_TYPE_HW) {
-		LOG_VERBOSE("Compressing buffer %u using HW (just copying)", buf_index);
-		hw_encoder_compress_buffer(dev, buf_index);
-	}
-#	ifdef WITH_OMX
-	else if (encoder->run->type == ENCODER_TYPE_OMX) {
-		LOG_VERBOSE("Compressing buffer %u using OMX", buf_index);
-		if (omx_encoder_compress_buffer(encoder->run->omxs[worker_number], dev, buf_index) < 0) {
-			goto error;
-		}
-	}
-#	endif
-
-	dev->run->pictures[buf_index]->encode_end_ts = get_now_monotonic();
-
-	dev->run->pictures[buf_index]->width = dev->run->width;
-	dev->run->pictures[buf_index]->height = dev->run->height;
-
-	return 0;
-
-#	pragma GCC diagnostic ignored "-Wunused-label"
-#	pragma GCC diagnostic push
-	// cppcheck-suppress unusedLabel
-	error:
-		LOG_INFO("Error while compressing buffer, falling back to CPU");
-		A_MUTEX_LOCK(&encoder->run->mutex);
-		encoder->run->cpu_forced = true;
-		A_MUTEX_UNLOCK(&encoder->run->mutex);
-		return -1;
-#	pragma GCC diagnostic pop
-}

src/encoders/omx/component.c

@@ -1,158 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "component.h"
-
-#include <unistd.h>
-
-#include <IL/OMX_Core.h>
-#include <IL/OMX_Component.h>
-
-#include "../../logging.h"
-
-#include "formatters.h"
-
-
-static int _component_wait_port_changed(OMX_HANDLETYPE *component, OMX_U32 port, OMX_BOOL enabled);
-static int _component_wait_state_changed(OMX_HANDLETYPE *component, OMX_STATETYPE wanted);
-
-
-int component_enable_port(OMX_HANDLETYPE *component, OMX_U32 port) {
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Enabling OMX port %u ...", port);
-	if ((error = OMX_SendCommand(*component, OMX_CommandPortEnable, port, NULL)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't enable OMX port %u", port);
-		return -1;
-	}
-	return _component_wait_port_changed(component, port, OMX_TRUE);
-}
-
-int component_disable_port(OMX_HANDLETYPE *component, OMX_U32 port) {
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Disabling OMX port %u ...", port);
-	if ((error = OMX_SendCommand(*component, OMX_CommandPortDisable, port, NULL)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't disable OMX port %u", port);
-		return -1;
-	}
-	return _component_wait_port_changed(component, port, OMX_FALSE);
-}
-
-int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef, OMX_U32 port) {
-	OMX_ERRORTYPE error;
-
-	// cppcheck-suppress redundantPointerOp
-	OMX_INIT_STRUCTURE(*portdef);
-	portdef->nPortIndex = port;
-
-	LOG_DEBUG("Fetching OMX port %u definition ...", port);
-	if ((error = OMX_GetParameter(*component, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't get OMX port %u definition", port);
-		return -1;
-	}
-	return 0;
-}
-
-int component_set_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef) {
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Writing OMX port %u definition ...", portdef->nPortIndex);
-	if ((error = OMX_SetParameter(*component, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't set OMX port %u definition", portdef->nPortIndex);
-		return -1;
-	}
-	return 0;
-}
-
-int component_set_state(OMX_HANDLETYPE *component, OMX_STATETYPE state) {
-	const char *state_str = omx_state_to_string(state);
-	OMX_ERRORTYPE error;
-	int retries = 50;
-
-	LOG_DEBUG("Switching component state to %s ...", state_str);
-
-	do {
-		error = OMX_SendCommand(*component, OMX_CommandStateSet, state, NULL);
-		if (error == OMX_ErrorNone) {
-			return _component_wait_state_changed(component, state);
-		} else if (error == OMX_ErrorInsufficientResources && retries) {
-			// Иногда железо не инициализируется, хз почему, просто ретраим, со второй попытки сработает
-			LOG_ERROR_OMX(error, "Can't switch OMX component state to %s, need to retry", state_str);
-			retries -= 1;
-			usleep(8000);
-		} else {
-			break;
-		}
-	} while (retries);
-
-	LOG_ERROR_OMX(error, "Can't switch OMX component state to %s", state_str);
-	return -1;
-}
-
-
-static int _component_wait_port_changed(OMX_HANDLETYPE *component, OMX_U32 port, OMX_BOOL enabled) {
-	OMX_ERRORTYPE error;
-	OMX_PARAM_PORTDEFINITIONTYPE portdef;
-	int retries = 50;
-
-	OMX_INIT_STRUCTURE(portdef);
-	portdef.nPortIndex = port;
-
-	do {
-		if ((error = OMX_GetParameter(*component, OMX_IndexParamPortDefinition, &portdef)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't get OMX port %u definition for waiting", port);
-			return -1;
-		}
-
-		if (portdef.bEnabled != enabled) {
-			LOG_DEBUG("Waiting for OMX %s port %u", (enabled ? "enabling" : "disabling"), port);
-			retries -= 1;
-			usleep(8000);
-		}
-	} while (portdef.bEnabled != enabled && retries);
-
-	LOG_DEBUG("OMX port %u %s", port, (enabled ? "enabled" : "disabled"));
-	return (portdef.bEnabled == enabled ? 0 : -1);
-}
-
-static int _component_wait_state_changed(OMX_HANDLETYPE *component, OMX_STATETYPE wanted) {
-	OMX_ERRORTYPE error;
-	OMX_STATETYPE state;
-	int retries = 50;
-
-	do {
-		if ((error = OMX_GetState(*component, &state)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Failed to get OMX component state");
-			return -1;
-		}
-
-		if (state != wanted) {
-			LOG_DEBUG("Waiting when OMX component state changes to %s", omx_state_to_string(wanted));
-			retries -= 1;
-			usleep(8000);
-		}
-	} while (state != wanted && retries);
-
-	LOG_DEBUG("Switched OMX component state to %s", omx_state_to_string(wanted))
-	return (state == wanted ? 0 : -1);
-}

src/encoders/omx/encoder.c

@@ -1,507 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "encoder.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <assert.h>
-
-#include <linux/videodev2.h>
-
-#include <bcm_host.h>
-#include <IL/OMX_Core.h>
-#include <IL/OMX_Component.h>
-#include <IL/OMX_Broadcom.h>
-#include <interface/vcos/vcos_semaphore.h>
-
-#include "../../logging.h"
-#include "../../tools.h"
-#include "../../picture.h"
-#include "../../device.h"
-
-#include "formatters.h"
-#include "component.h"
-
-
-static const OMX_U32 _INPUT_PORT = 340;
-static const OMX_U32 _OUTPUT_PORT = 341;
-
-
-static int _i_omx = 0;
-
-
-static int _omx_init_component(struct omx_encoder_t *omx);
-static int _omx_init_disable_ports(struct omx_encoder_t *omx);
-static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev);
-static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality);
-static int _omx_encoder_clear_ports(struct omx_encoder_t *omx);
-
-static OMX_ERRORTYPE _omx_event_handler(
-	UNUSED OMX_HANDLETYPE encoder,
-	OMX_PTR v_omx, OMX_EVENTTYPE event, OMX_U32 data1,
-	UNUSED OMX_U32 data2, UNUSED OMX_PTR event_data);
-
-static OMX_ERRORTYPE _omx_input_required_handler(
-	UNUSED OMX_HANDLETYPE encoder,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer);
-
-static OMX_ERRORTYPE _omx_output_available_handler(
-	UNUSED OMX_HANDLETYPE encoder,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer);
-
-
-struct omx_encoder_t *omx_encoder_init(void) {
-	// Some theory:
-	//   - http://www.fourcc.org/yuv.php
-	//   - https://kwasi-ich.de/blog/2017/11/26/omx/
-	//   - https://github.com/hopkinskong/rpi-omx-jpeg-encode/blob/master/jpeg_bench.cpp
-	//   - https://github.com/kwasmich/OMXPlayground/blob/master/omxJPEGEnc.c
-	//   - https://github.com/gagle/raspberrypi-openmax-jpeg/blob/master/jpeg.c
-	//   - https://www.raspberrypi.org/forums/viewtopic.php?t=154790
-	//   - https://bitbucket.org/bensch128/omxjpegencode/src/master/jpeg_encoder.cpp
-	//   - http://home.nouwen.name/RaspberryPi/documentation/ilcomponents/image_encode.html
-
-	struct omx_encoder_t *omx;
-	OMX_ERRORTYPE error;
-
-	A_CALLOC(omx, 1);
-
-	assert(_i_omx >= 0);
-	if (_i_omx == 0) {
-		LOG_INFO("Initializing BCM ...");
-		bcm_host_init();
-
-		LOG_INFO("Initializing OMX ...");
-		if ((error = OMX_Init()) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't initialize OMX");
-			goto error;
-		}
-	}
-	_i_omx += 1;
-
-	LOG_INFO("Initializing OMX encoder ...");
-
-	if (vcos_semaphore_create(&omx->handler_sem, "handler_sem", 0) != VCOS_SUCCESS) {
-		LOG_ERROR("Can't create VCOS semaphore");
-		goto error;
-	}
-	omx->i_handler_sem = true;
-
-	if (_omx_init_component(omx) < 0) {
-		goto error;
-	}
-
-	if (_omx_init_disable_ports(omx) < 0) {
-		goto error;
-	}
-
-	return omx;
-
-	error:
-		omx_encoder_destroy(omx);
-		return NULL;
-}
-
-void omx_encoder_destroy(struct omx_encoder_t *omx) {
-	OMX_ERRORTYPE error;
-
-	LOG_INFO("Destroying OMX encoder ...");
-
-	component_set_state(&omx->encoder, OMX_StateIdle);
-	_omx_encoder_clear_ports(omx);
-	component_set_state(&omx->encoder, OMX_StateLoaded);
-
-	if (omx->i_handler_sem) {
-		vcos_semaphore_delete(&omx->handler_sem);
-	}
-
-	if (omx->i_encoder) {
-		if ((error = OMX_FreeHandle(omx->encoder)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't free OMX.broadcom.image_encode");
-		}
-	}
-
-	assert(_i_omx >= 0);
-	_i_omx -= 1;
-	if (_i_omx == 0) {
-		LOG_INFO("Destroying OMX ...");
-		OMX_Deinit();
-
-		LOG_INFO("Destroying BCM ...");
-		bcm_host_deinit();
-	}
-
-	free(omx);
-}
-
-int omx_encoder_prepare(struct omx_encoder_t *omx, struct device_t *dev, unsigned quality) {
-	if (component_set_state(&omx->encoder, OMX_StateIdle) < 0) {
-		return -1;
-	}
-	if (_omx_encoder_clear_ports(omx) < 0) {
-		return -1;
-	}
-	if (_omx_setup_input(omx, dev) < 0) {
-		return -1;
-	}
-	if (_omx_setup_output(omx, quality) < 0) {
-		return -1;
-	}
-	if (component_set_state(&omx->encoder, OMX_StateExecuting) < 0) {
-		return -1;
-	}
-	return 0;
-}
-
-int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev, unsigned index) {
-#	define HW_BUFFER(_next)	dev->run->hw_buffers[index]._next
-#	define IN(_next)		omx->input_buffer->_next
-#	define OUT(_next)		omx->output_buffer->_next
-
-	OMX_ERRORTYPE error;
-	VCOS_STATUS_T sem_status;
-	size_t slice_size = (IN(nAllocLen) < HW_BUFFER(used) ? IN(nAllocLen) : HW_BUFFER(used));
-	size_t pos = 0;
-
-	if ((error = OMX_FillThisBuffer(omx->encoder, omx->output_buffer)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Failed to request filling of the output buffer on encoder");
-		return -1;
-	}
-
-	dev->run->pictures[index]->used = 0;
-	omx->output_available = false;
-	omx->input_required = true;
-
-	while (true) {
-		if (omx->failed) {
-			return -1;
-		}
-
-		if (omx->output_available) {
-			omx->output_available = false;
-
-			picture_append_data(dev->run->pictures[index], OUT(pBuffer) + OUT(nOffset), OUT(nFilledLen));
-
-			if (OUT(nFlags) & OMX_BUFFERFLAG_ENDOFFRAME) {
-				OUT(nFlags) = 0;
-				break;
-			}
-
-			if ((error = OMX_FillThisBuffer(omx->encoder, omx->output_buffer)) != OMX_ErrorNone) {
-				LOG_ERROR_OMX(error, "Failed to request filling of the output buffer on encoder");
-				return -1;
-			}
-		}
-
-		if (omx->input_required) {
-			omx->input_required = false;
-
-			if (pos == HW_BUFFER(used)) {
-				continue;
-			}
-
-			memcpy(IN(pBuffer), HW_BUFFER(data) + pos, slice_size);
-			IN(nOffset) = 0;
-			IN(nFilledLen) = slice_size;
-
-			pos += slice_size;
-
-			if (pos + slice_size > HW_BUFFER(used)) {
-				slice_size = HW_BUFFER(used) - pos;
-			}
-
-			if ((error = OMX_EmptyThisBuffer(omx->encoder, omx->input_buffer)) != OMX_ErrorNone) {
-				LOG_ERROR_OMX(error, "Failed to request emptying of the input buffer on encoder");
-				return -1;
-			}
-		}
-
-		// vcos_semaphore_wait(&omx->handler_sem);
-		switch (sem_status = vcos_semaphore_wait_timeout(&omx->handler_sem, 3000)) {
-			case VCOS_SUCCESS: break;
-			case VCOS_EAGAIN: LOG_ERROR("Can't wait VCOS semaphore: EAGAIN (timeout)"); return -1;
-			case VCOS_EINVAL: LOG_ERROR("Can't wait VCOS semaphore: EINTVAL"); return -1;
-			default: LOG_ERROR("Can't wait VCOS semaphore: %d", sem_status); return -1;
-		}
-	}
-
-#	undef OUT
-#	undef IN
-#	undef HW_BUFFER
-	return 0;
-}
-
-static int _omx_init_component(struct omx_encoder_t *omx) {
-	OMX_ERRORTYPE error;
-
-	OMX_CALLBACKTYPE callbacks;
-	MEMSET_ZERO(callbacks);
-	callbacks.EventHandler = _omx_event_handler;
-	callbacks.EmptyBufferDone = _omx_input_required_handler;
-	callbacks.FillBufferDone = _omx_output_available_handler;
-
-	LOG_DEBUG("Initializing OMX.broadcom.image_encode ...");
-	if ((error = OMX_GetHandle(&omx->encoder, "OMX.broadcom.image_encode", omx, &callbacks)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't initialize OMX.broadcom.image_encode");
-		return -1;
-	}
-	omx->i_encoder = true;
-	return 0;
-}
-
-static int _omx_init_disable_ports(struct omx_encoder_t *omx) {
-	OMX_ERRORTYPE error;
-	OMX_INDEXTYPE types[] = {
-		OMX_IndexParamAudioInit, OMX_IndexParamVideoInit,
-		OMX_IndexParamImageInit, OMX_IndexParamOtherInit,
-	};
-	OMX_PORT_PARAM_TYPE ports;
-
-	OMX_INIT_STRUCTURE(ports);
-	if ((error = OMX_GetParameter(omx->encoder, OMX_IndexParamImageInit, &ports)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't OMX_GetParameter(OMX_IndexParamImageInit)");
-		return -1;
-	}
-
-	for (unsigned index = 0; index < 4; ++index) {
-		if ((error = OMX_GetParameter(omx->encoder, types[index], &ports)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't OMX_GetParameter(types[%u])", index);
-			return -1;
-		}
-		for (OMX_U32 port = ports.nStartPortNumber; port < ports.nStartPortNumber + ports.nPorts; ++port) {
-			if (component_disable_port(&omx->encoder, port) < 0) {
-				return -1;
-			}
-		}
-	}
-	return 0;
-}
-
-static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev) {
-	OMX_ERRORTYPE error;
-	OMX_PARAM_PORTDEFINITIONTYPE portdef;
-
-	LOG_DEBUG("Setting up OMX JPEG input port ...");
-
-	if (component_get_portdef(&omx->encoder, &portdef, _INPUT_PORT) < 0) {
-		LOG_ERROR("... first");
-		return -1;
-	}
-
-	portdef.format.image.nFrameWidth = dev->run->width;
-	portdef.format.image.nFrameHeight = dev->run->height;
-	portdef.format.image.nStride = 0;
-	portdef.format.image.nSliceHeight = align_size(dev->run->height, 16);
-	portdef.format.image.bFlagErrorConcealment = OMX_FALSE;
-	portdef.format.image.eCompressionFormat = OMX_IMAGE_CodingUnused;
-	portdef.nBufferSize = picture_get_generous_size(dev->run->width, dev->run->height);
-
-#	define MAP_FORMAT(_v4l2_format, _omx_format) \
-		case _v4l2_format: { portdef.format.image.eColorFormat = _omx_format; break; }
-
-	switch (dev->run->format) {
-		// https://www.fourcc.org/yuv.php
-		// Also see comments inside OMX_IVCommon.h
-		MAP_FORMAT(V4L2_PIX_FMT_YUYV, OMX_COLOR_FormatYCbYCr);
-		MAP_FORMAT(V4L2_PIX_FMT_UYVY, OMX_COLOR_FormatCbYCrY);
-		MAP_FORMAT(V4L2_PIX_FMT_RGB565, OMX_COLOR_Format16bitRGB565);
-		MAP_FORMAT(V4L2_PIX_FMT_RGB24, OMX_COLOR_Format24bitRGB888);
-		// TODO: найти устройство с RGB565 и протестить его.
-		// FIXME: RGB24 не работает нормально, нижняя половина экрана зеленая.
-		// FIXME: Китайский EasyCap тоже не работает, мусор на экране.
-		// Вероятно обе проблемы вызваны некорректной реализацией OMX на пае.
-		default: assert(0 && "Unsupported input format for OMX encoder");
-	}
-
-#	undef MAP_FORMAT
-
-	if (component_set_portdef(&omx->encoder, &portdef) < 0) {
-		return -1;
-	}
-
-	if (component_get_portdef(&omx->encoder, &portdef, _INPUT_PORT) < 0) {
-		LOG_ERROR("... second");
-		return -1;
-	}
-
-	if (component_enable_port(&omx->encoder, _INPUT_PORT) < 0) {
-		return -1;
-	}
-	omx->i_input_port_enabled = true;
-
-	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->input_buffer, _INPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't allocate OMX JPEG input buffer");
-		return -1;
-	}
-	return 0;
-}
-
-static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality) {
-	OMX_ERRORTYPE error;
-	OMX_PARAM_PORTDEFINITIONTYPE portdef;
-
-	LOG_DEBUG("Setting up OMX JPEG output port ...");
-
-	if (component_get_portdef(&omx->encoder, &portdef, _OUTPUT_PORT) < 0) {
-		LOG_ERROR("... first");
-		return -1;
-	}
-
-	portdef.format.image.bFlagErrorConcealment = OMX_FALSE;
-	portdef.format.image.eCompressionFormat = OMX_IMAGE_CodingJPEG;
-	portdef.format.image.eColorFormat = OMX_COLOR_FormatYCbYCr;
-
-	if (component_set_portdef(&omx->encoder, &portdef) < 0) {
-		return -1;
-	}
-
-	if (component_get_portdef(&omx->encoder, &portdef, _OUTPUT_PORT) < 0) {
-		LOG_ERROR("... second");
-		return -1;
-	}
-
-	{
-		OMX_CONFIG_BOOLEANTYPE exif;
-
-		OMX_INIT_STRUCTURE(exif);
-		exif.bEnabled = OMX_FALSE;
-
-		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamBrcmDisableEXIF, &exif)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't disable EXIF on OMX JPEG");
-			return -1;
-		}
-	}
-
-	{
-		OMX_PARAM_IJGSCALINGTYPE ijg;
-
-		OMX_INIT_STRUCTURE(ijg);
-		ijg.nPortIndex = _OUTPUT_PORT;
-		ijg.bEnabled = OMX_TRUE;
-
-		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamBrcmEnableIJGTableScaling, &ijg)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't set OMX JPEG IJG settings");
-			return -1;
-		}
-	}
-
-	{
-		OMX_IMAGE_PARAM_QFACTORTYPE qfactor;
-
-		OMX_INIT_STRUCTURE(qfactor);
-		qfactor.nPortIndex = _OUTPUT_PORT;
-		qfactor.nQFactor = quality;
-
-		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamQFactor, &qfactor)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't set OMX JPEG quality");
-			return -1;
-		}
-	}
-
-	if (component_enable_port(&omx->encoder, _OUTPUT_PORT) < 0) {
-		return -1;
-	}
-	omx->i_output_port_enabled = true;
-
-	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->output_buffer, _OUTPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't allocate OMX JPEG output buffer");
-		return -1;
-	}
-	return 0;
-}
-
-static int _omx_encoder_clear_ports(struct omx_encoder_t *omx) {
-	OMX_ERRORTYPE error;
-	int retval = 0;
-
-	if (omx->i_output_port_enabled) {
-		retval -= component_disable_port(&omx->encoder, _OUTPUT_PORT);
-		omx->i_output_port_enabled = false;
-	}
-	if (omx->i_input_port_enabled) {
-		retval -= component_disable_port(&omx->encoder, _INPUT_PORT);
-		omx->i_input_port_enabled = false;
-	}
-
-	if (omx->input_buffer) {
-		if ((error = OMX_FreeBuffer(omx->encoder, _INPUT_PORT, omx->input_buffer)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't free OMX JPEG input buffer");
-			// retval -= 1;
-		}
-		omx->input_buffer = NULL;
-	}
-	if (omx->output_buffer) {
-		if ((error = OMX_FreeBuffer(omx->encoder, _OUTPUT_PORT, omx->output_buffer)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't free OMX JPEG output buffer");
-			// retval -= 1;
-		}
-		omx->output_buffer = NULL;
-	}
-	return retval;
-}
-
-static OMX_ERRORTYPE _omx_event_handler(
-	UNUSED OMX_HANDLETYPE encoder,
-	OMX_PTR v_omx, OMX_EVENTTYPE event, OMX_U32 data1,
-	UNUSED OMX_U32 data2, UNUSED OMX_PTR event_data) {
-
-	// OMX calls this handler for all the events it emits
-
-	struct omx_encoder_t *omx = (struct omx_encoder_t *)v_omx;
-
-	if (event == OMX_EventError) {
-		LOG_ERROR_OMX((OMX_ERRORTYPE)data1, "OMX error event received");
-		omx->failed = true;
-		assert(vcos_semaphore_post(&omx->handler_sem) == VCOS_SUCCESS);
-	}
-	return OMX_ErrorNone;
-}
-
-static OMX_ERRORTYPE _omx_input_required_handler(
-	UNUSED OMX_HANDLETYPE encoder,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer) {
-
-	// Called by OMX when the encoder component requires
-	// the input buffer to be filled with RAW image data
-
-	struct omx_encoder_t *omx = (struct omx_encoder_t *)v_omx;
-
-	omx->input_required = true;
-	assert(vcos_semaphore_post(&omx->handler_sem) == VCOS_SUCCESS);
-	return OMX_ErrorNone;
-}
-
-static OMX_ERRORTYPE _omx_output_available_handler(
-	UNUSED OMX_HANDLETYPE encoder,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer) {
-
-	// Called by OMX when the encoder component has filled
-	// the output buffer with JPEG data
-
-	struct omx_encoder_t *omx = (struct omx_encoder_t *)v_omx;
-
-	omx->output_available = true;
-	assert(vcos_semaphore_post(&omx->handler_sem) == VCOS_SUCCESS);
-	return OMX_ErrorNone;
-}

src/encoders/omx/formatters.c

@@ -1,109 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "formatters.h"
-
-#include <stdio.h>
-#include <assert.h>
-
-#include <IL/OMX_IVCommon.h>
-#include <IL/OMX_Core.h>
-
-#include "../../tools.h"
-
-
-#define CASE_TO_STRING(_value) \
-	case _value: { return #_value; }
-
-#define CASE_ASSERT(_msg, _value) default: { \
-		char *_assert_buf; A_CALLOC(_assert_buf, 128); \
-		sprintf(_assert_buf, _msg ": 0x%08x", _value); \
-		assert(0 && _assert_buf); \
-	}
-
-const char *omx_error_to_string(OMX_ERRORTYPE error) {
-	switch (error) {
-		CASE_TO_STRING(OMX_ErrorNone);
-		CASE_TO_STRING(OMX_ErrorInsufficientResources);
-		CASE_TO_STRING(OMX_ErrorUndefined);
-		CASE_TO_STRING(OMX_ErrorInvalidComponentName);
-		CASE_TO_STRING(OMX_ErrorComponentNotFound);
-		CASE_TO_STRING(OMX_ErrorInvalidComponent);
-		CASE_TO_STRING(OMX_ErrorBadParameter);
-		CASE_TO_STRING(OMX_ErrorNotImplemented);
-		CASE_TO_STRING(OMX_ErrorUnderflow);
-		CASE_TO_STRING(OMX_ErrorOverflow);
-		CASE_TO_STRING(OMX_ErrorHardware);
-		CASE_TO_STRING(OMX_ErrorInvalidState);
-		CASE_TO_STRING(OMX_ErrorStreamCorrupt);
-		CASE_TO_STRING(OMX_ErrorPortsNotCompatible);
-		CASE_TO_STRING(OMX_ErrorResourcesLost);
-		CASE_TO_STRING(OMX_ErrorNoMore);
-		CASE_TO_STRING(OMX_ErrorVersionMismatch);
-		CASE_TO_STRING(OMX_ErrorNotReady);
-		CASE_TO_STRING(OMX_ErrorTimeout);
-		CASE_TO_STRING(OMX_ErrorSameState);
-		CASE_TO_STRING(OMX_ErrorResourcesPreempted);
-		CASE_TO_STRING(OMX_ErrorPortUnresponsiveDuringAllocation);
-		CASE_TO_STRING(OMX_ErrorPortUnresponsiveDuringDeallocation);
-		CASE_TO_STRING(OMX_ErrorPortUnresponsiveDuringStop);
-		CASE_TO_STRING(OMX_ErrorIncorrectStateTransition);
-		CASE_TO_STRING(OMX_ErrorIncorrectStateOperation);
-		CASE_TO_STRING(OMX_ErrorUnsupportedSetting);
-		CASE_TO_STRING(OMX_ErrorUnsupportedIndex);
-		CASE_TO_STRING(OMX_ErrorBadPortIndex);
-		CASE_TO_STRING(OMX_ErrorPortUnpopulated);
-		CASE_TO_STRING(OMX_ErrorComponentSuspended);
-		CASE_TO_STRING(OMX_ErrorDynamicResourcesUnavailable);
-		CASE_TO_STRING(OMX_ErrorMbErrorsInFrame);
-		CASE_TO_STRING(OMX_ErrorFormatNotDetected);
-		CASE_TO_STRING(OMX_ErrorContentPipeOpenFailed);
-		CASE_TO_STRING(OMX_ErrorContentPipeCreationFailed);
-		CASE_TO_STRING(OMX_ErrorSeperateTablesUsed);
-		CASE_TO_STRING(OMX_ErrorTunnelingUnsupported);
-		CASE_TO_STRING(OMX_ErrorKhronosExtensions);
-		CASE_TO_STRING(OMX_ErrorVendorStartUnused);
-		CASE_TO_STRING(OMX_ErrorDiskFull);
-		CASE_TO_STRING(OMX_ErrorMaxFileSize);
-		CASE_TO_STRING(OMX_ErrorDrmUnauthorised);
-		CASE_TO_STRING(OMX_ErrorDrmExpired);
-		CASE_TO_STRING(OMX_ErrorDrmGeneral);
-		default: return "Unknown OMX error";
-	}
-}
-
-const char *omx_state_to_string(OMX_STATETYPE state) {
-	switch (state) {
-		CASE_TO_STRING(OMX_StateInvalid);
-		CASE_TO_STRING(OMX_StateLoaded);
-		CASE_TO_STRING(OMX_StateIdle);
-		CASE_TO_STRING(OMX_StateExecuting);
-		CASE_TO_STRING(OMX_StatePause);
-		CASE_TO_STRING(OMX_StateWaitForResources);
-		// cppcheck-suppress constArgument
-		// cppcheck-suppress knownArgument
-		CASE_ASSERT("Unsupported OMX state", state);
-	}
-}
-
-#undef CASE_ASSERT
-#undef CASE_TO_STRING

src/http/server.c

@@ -1,988 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "server.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <stdatomic.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <assert.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <netinet/tcp.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-
-#include <event2/event.h>
-#include <event2/thread.h>
-#include <event2/http.h>
-#include <event2/buffer.h>
-#include <event2/bufferevent.h>
-#include <event2/keyvalq_struct.h>
-
-#include <uuid/uuid.h>
-
-#ifndef EVTHREAD_USE_PTHREADS_IMPLEMENTED
-#	error Required libevent-pthreads support
-#endif
-
-#include "../tools.h"
-#include "../threading.h"
-#include "../logging.h"
-#include "../process.h"
-#include "../picture.h"
-#include "../encoder.h"
-#include "../stream.h"
-#ifdef WITH_GPIO
-#	include "../gpio/gpio.h"
-#endif
-
-#include "unix.h"
-#include "uri.h"
-#include "base64.h"
-#include "mime.h"
-#include "static.h"
-#include "blank.h"
-
-#include "data/index_html.h"
-
-
-static int _http_preprocess_request(struct evhttp_request *request, struct http_server_t *server);
-
-static void _http_callback_root(struct evhttp_request *request, void *v_server);
-static void _http_callback_static(struct evhttp_request *request, void *v_server);
-static void _http_callback_state(struct evhttp_request *request, void *v_server);
-static void _http_callback_snapshot(struct evhttp_request *request, void *v_server);
-
-static void _http_callback_stream(struct evhttp_request *request, void *v_server);
-static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_ctx);
-static void _http_callback_stream_error(struct bufferevent *buf_event, short what, void *v_ctx);
-
-static void _http_exposed_refresh(int fd, short event, void *v_server);
-static void _http_queue_send_stream(struct http_server_t *server, bool stream_updated, bool picture_updated);
-
-static bool _expose_new_picture_unsafe(struct http_server_t *server);
-static bool _expose_blank_picture(struct http_server_t *server);
-
-static void _format_bufferevent_reason(short what, char *reason);
-
-
-struct http_server_t *http_server_init(struct stream_t *stream) {
-	struct http_server_runtime_t *run;
-	struct http_server_t *server;
-	struct exposed_t *exposed;
-
-	A_CALLOC(exposed, 1);
-	exposed->picture = picture_init();
-
-	A_CALLOC(run, 1);
-	run->stream = stream;
-	run->exposed = exposed;
-	run->drop_same_frames_blank = 10;
-
-	A_CALLOC(server, 1);
-	server->host = "127.0.0.1";
-	server->port = 8080;
-	server->unix_path = "";
-	server->user = "";
-	server->passwd = "";
-	server->static_path = "";
-	server->allow_origin = "";
-	server->timeout = 10;
-	server->last_as_blank = -1;
-	server->run = run;
-
-	assert(!evthread_use_pthreads());
-	assert((run->base = event_base_new()));
-	assert((run->http = evhttp_new(run->base)));
-	evhttp_set_allowed_methods(run->http, EVHTTP_REQ_GET|EVHTTP_REQ_HEAD);
-	return server;
-}
-
-void http_server_destroy(struct http_server_t *server) {
-	if (server->run->refresh) {
-		event_del(server->run->refresh);
-		event_free(server->run->refresh);
-	}
-
-	evhttp_free(server->run->http);
-	if (server->run->unix_fd) {
-		close(server->run->unix_fd);
-	}
-	event_base_free(server->run->base);
-
-#	if LIBEVENT_VERSION_NUMBER >= 0x02010100
-	libevent_global_shutdown();
-#	endif
-
-	for (struct stream_client_t *client = server->run->stream_clients; client != NULL;) {
-		struct stream_client_t *next = client->next;
-
-		free(client->key);
-		free(client);
-		client = next;
-	}
-
-	if (server->run->auth_token) {
-		free(server->run->auth_token);
-	}
-
-	if (server->run->blank) {
-		picture_destroy(server->run->blank);
-	}
-
-	picture_destroy(server->run->exposed->picture);
-	free(server->run->exposed);
-	free(server->run);
-	free(server);
-}
-
-int http_server_listen(struct http_server_t *server) {
-	{
-		if (server->static_path[0] != '\0') {
-			LOG_INFO("Enabling HTTP file server: %s", server->static_path);
-			evhttp_set_gencb(server->run->http, _http_callback_static, (void *)server);
-		} else {
-			assert(!evhttp_set_cb(server->run->http, "/", _http_callback_root, (void *)server));
-		}
-		assert(!evhttp_set_cb(server->run->http, "/state", _http_callback_state, (void *)server));
-		assert(!evhttp_set_cb(server->run->http, "/snapshot", _http_callback_snapshot, (void *)server));
-		assert(!evhttp_set_cb(server->run->http, "/stream", _http_callback_stream, (void *)server));
-	}
-
-	server->run->drop_same_frames_blank = max_u(server->drop_same_frames, server->run->drop_same_frames_blank);
-	server->run->blank = blank_picture_init(server->blank_path);
-
-#	define EXPOSED(_next) server->run->exposed->_next
-	// See _expose_blank_picture()
-	picture_copy(server->run->blank, EXPOSED(picture));
-	EXPOSED(expose_begin_ts) = get_now_monotonic();
-	EXPOSED(expose_cmp_ts) = EXPOSED(expose_begin_ts);
-	EXPOSED(expose_end_ts) = EXPOSED(expose_begin_ts);
-	// See _http_exposed_refresh()
-	EXPOSED(notify_last_width) = EXPOSED(picture->width);
-	EXPOSED(notify_last_height) = EXPOSED(picture->height);
-#	undef EXPOSED
-
-	{
-		struct timeval refresh_interval;
-
-		refresh_interval.tv_sec = 0;
-		if (server->run->stream->dev->desired_fps > 0) {
-			refresh_interval.tv_usec = 1000000 / (server->run->stream->dev->desired_fps * 2);
-		} else {
-			refresh_interval.tv_usec = 16000; // ~60fps
-		}
-
-		assert((server->run->refresh = event_new(server->run->base, -1, EV_PERSIST, _http_exposed_refresh, server)));
-		assert(!event_add(server->run->refresh, &refresh_interval));
-	}
-
-	if (server->slowdown) {
-		stream_switch_slowdown(server->run->stream, true);
-	}
-
-	evhttp_set_timeout(server->run->http, server->timeout);
-
-	if (server->user[0] != '\0') {
-		char *raw_token;
-		char *encoded_token;
-
-		A_CALLOC(raw_token, strlen(server->user) + strlen(server->passwd) + 2);
-		sprintf(raw_token, "%s:%s", server->user, server->passwd);
-		encoded_token = base64_encode((unsigned char *)raw_token);
-		free(raw_token);
-
-		A_CALLOC(server->run->auth_token, strlen(encoded_token) + 16);
-		sprintf(server->run->auth_token, "Basic %s", encoded_token);
-		free(encoded_token);
-
-		LOG_INFO("Using HTTP basic auth");
-	}
-
-	if (server->unix_path[0] != '\0') {
-		LOG_DEBUG("Binding HTTP to UNIX socket '%s' ...", server->unix_path);
-		if ((server->run->unix_fd = evhttp_my_bind_unix(
-			server->run->http,
-			server->unix_path,
-			server->unix_rm,
-			server->unix_mode)) < 0
-		) {
-			return -1;
-		}
-		LOG_INFO("Listening HTTP on UNIX socket '%s'", server->unix_path);
-		if (server->tcp_nodelay) {
-			LOG_ERROR("TCP_NODELAY flag can't be used with UNIX socket and will be ignored");
-		}
-	} else {
-		LOG_DEBUG("Binding HTTP to [%s]:%u ...", server->host, server->port);
-		if (evhttp_bind_socket(server->run->http, server->host, server->port) < 0) {
-			LOG_PERROR("Can't bind HTTP on [%s]:%u", server->host, server->port)
-			return -1;
-		}
-		LOG_INFO("Listening HTTP on [%s]:%u", server->host, server->port);
-	}
-
-	return 0;
-}
-
-void http_server_loop(struct http_server_t *server) {
-	LOG_INFO("Starting HTTP eventloop ...");
-	event_base_dispatch(server->run->base);
-	LOG_INFO("HTTP eventloop stopped");
-}
-
-void http_server_loop_break(struct http_server_t *server) {
-	event_base_loopbreak(server->run->base);
-}
-
-#define ADD_HEADER(_key, _value) \
-	assert(!evhttp_add_header(evhttp_request_get_output_headers(request), _key, _value))
-
-static int _http_preprocess_request(struct evhttp_request *request, struct http_server_t *server) {
-	if (server->run->auth_token) {
-		const char *token = evhttp_find_header(evhttp_request_get_input_headers(request), "Authorization");
-
-		if (token == NULL || strcmp(token, server->run->auth_token) != 0) {
-			ADD_HEADER("WWW-Authenticate", "Basic realm=\"Restricted area\"");
-			evhttp_send_reply(request, 401, "Unauthorized", NULL);
-			return -1;
-		}
-	}
-
-	if (evhttp_request_get_command(request) == EVHTTP_REQ_HEAD) { \
-		evhttp_send_reply(request, HTTP_OK, "OK", NULL); \
-		return -1;
-	}
-
-	return 0;
-}
-
-#define PREPROCESS_REQUEST { \
-		if (_http_preprocess_request(request, server) < 0) { \
-			return; \
-		} \
-	}
-
-static void _http_callback_root(struct evhttp_request *request, void *v_server) {
-	struct http_server_t *server = (struct http_server_t *)v_server;
-	struct evbuffer *buf;
-	struct evkeyvalq params; // For mjpg-streamer compatibility
-	const char *action; // Ditto
-
-	PREPROCESS_REQUEST;
-
-	evhttp_parse_query(evhttp_request_get_uri(request), &params);
-	action = evhttp_find_header(&params, "action");
-
-	if (action && !strcmp(action, "snapshot")) {
-		_http_callback_snapshot(request, v_server);
-	} else if (action && !strcmp(action, "stream")) {
-		_http_callback_stream(request, v_server);
-	} else {
-		assert((buf = evbuffer_new()));
-		assert(evbuffer_add_printf(buf, "%s", HTML_INDEX_PAGE));
-		ADD_HEADER("Content-Type", "text/html");
-		evhttp_send_reply(request, HTTP_OK, "OK", buf);
-		evbuffer_free(buf);
-	}
-
-	evhttp_clear_headers(&params);
-}
-
-static void _http_callback_static(struct evhttp_request *request, void *v_server) {
-	struct http_server_t *server = (struct http_server_t *)v_server;
-	struct evbuffer *buf = NULL;
-	struct evhttp_uri *uri = NULL;
-	char *uri_path;
-	char *decoded_path = NULL;
-	char *static_path = NULL;
-	int fd = -1;
-	struct stat st;
-
-	PREPROCESS_REQUEST;
-
-	if ((uri = evhttp_uri_parse(evhttp_request_get_uri(request))) == NULL) {
-		goto bad_request;
-	}
-	if ((uri_path = (char *)evhttp_uri_get_path(uri)) == NULL) {
-		uri_path = "/";
-	}
-
-	if ((decoded_path = evhttp_uridecode(uri_path, 0, NULL)) == NULL) {
-		goto bad_request;
-	}
-
-	assert((buf = evbuffer_new()));
-
-	if ((static_path = find_static_file_path(server->static_path, decoded_path)) == NULL) {
-		goto not_found;
-	}
-
-	if ((fd = open(static_path, O_RDONLY)) < 0) {
-		LOG_PERROR("HTTP: Can't open found static file %s", static_path);
-		goto not_found;
-	}
-
-	if (fstat(fd, &st) < 0) {
-		LOG_PERROR("HTTP: Can't stat() found static file %s", static_path);
-		goto not_found;
-	}
-
-	if (st.st_size > 0 && evbuffer_add_file(buf, fd, 0, st.st_size) < 0) {
-		LOG_ERROR("HTTP: Can't serve static file %s", static_path);
-		goto not_found;
-	}
-	ADD_HEADER("Content-Type", guess_mime_type(static_path));
-	evhttp_send_reply(request, HTTP_OK, "OK", buf);
-	goto cleanup;
-
-	bad_request:
-		evhttp_send_error(request, HTTP_BADREQUEST, NULL);
-		goto cleanup;
-
-	not_found:
-		evhttp_send_error(request, HTTP_NOTFOUND, NULL);
-		goto cleanup;
-
-	cleanup:
-		if (fd >= 0) {
-			close(fd);
-		}
-		if (static_path) {
-			free(static_path);
-		}
-		if (buf) {
-			evbuffer_free(buf);
-		}
-		if (decoded_path) {
-			free(decoded_path);
-		}
-		if (uri) {
-			evhttp_uri_free(uri);
-		}
-}
-
-static void _http_callback_state(struct evhttp_request *request, void *v_server) {
-	struct http_server_t *server = (struct http_server_t *)v_server;
-	struct evbuffer *buf;
-	enum encoder_type_t encoder_run_type;
-	unsigned encoder_run_quality;
-
-	PREPROCESS_REQUEST;
-
-#	define ENCODER(_next) server->run->stream->encoder->_next
-#	define EXPOSED(_next) server->run->exposed->_next
-
-	A_MUTEX_LOCK(&ENCODER(run->mutex));
-	encoder_run_type = ENCODER(run->type);
-	encoder_run_quality = ENCODER(run->quality);
-	A_MUTEX_UNLOCK(&ENCODER(run->mutex));
-
-	assert((buf = evbuffer_new()));
-
-	assert(evbuffer_add_printf(buf,
-		"{\"ok\": true, \"result\": {"
-		" \"encoder\": {\"type\": \"%s\", \"quality\": %u},"
-		" \"source\": {\"resolution\": {\"width\": %u, \"height\": %u},"
-		" \"online\": %s, \"desired_fps\": %u, \"captured_fps\": %u},"
-		" \"stream\": {\"queued_fps\": %u, \"clients\": %u, \"clients_stat\": {",
-		encoder_type_to_string(encoder_run_type),
-		encoder_run_quality,
-		(server->fake_width ? server->fake_width : EXPOSED(picture->width)),
-		(server->fake_height ? server->fake_height : EXPOSED(picture->height)),
-		bool_to_string(EXPOSED(online)),
-		server->run->stream->dev->desired_fps,
-		EXPOSED(captured_fps),
-		EXPOSED(queued_fps),
-		server->run->stream_clients_count
-	));
-
-#	undef EXPOSED
-#	undef ENCODER
-
-	for (struct stream_client_t * client = server->run->stream_clients; client != NULL; client = client->next) {
-		assert(evbuffer_add_printf(buf,
-			"\"%s\": {\"fps\": %u, \"extra_headers\": %s, \"advance_headers\": %s, \"dual_final_frames\": %s}%s",
-			client->id,
-			client->fps,
-			bool_to_string(client->extra_headers),
-			bool_to_string(client->advance_headers),
-			bool_to_string(client->dual_final_frames),
-			(client->next ? ", " : "")
-		));
-	}
-
-	assert(evbuffer_add_printf(buf, "}}}}"));
-
-	ADD_HEADER("Content-Type", "application/json");
-	evhttp_send_reply(request, HTTP_OK, "OK", buf);
-	evbuffer_free(buf);
-}
-
-static void _http_callback_snapshot(struct evhttp_request *request, void *v_server) {
-	struct http_server_t *server = (struct http_server_t *)v_server;
-	struct evbuffer *buf;
-	char header_buf[64];
-
-	PREPROCESS_REQUEST;
-
-#	define EXPOSED(_next) server->run->exposed->_next
-
-	assert((buf = evbuffer_new()));
-	assert(!evbuffer_add(buf, (const void *)EXPOSED(picture->data), EXPOSED(picture->used)));
-
-	if (server->allow_origin[0] != '\0') {
-		ADD_HEADER("Access-Control-Allow-Origin", server->allow_origin);
-	}
-	ADD_HEADER("Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate, pre-check=0, post-check=0, max-age=0");
-	ADD_HEADER("Pragma", "no-cache");
-	ADD_HEADER("Expires", "Mon, 3 Jan 2000 12:34:56 GMT");
-
-#	define ADD_TIME_HEADER(_key, _value) { \
-			sprintf(header_buf, "%.06Lf", _value); \
-			ADD_HEADER(_key, header_buf); \
-		}
-
-#	define ADD_UNSIGNED_HEADER(_key, _value) { \
-			sprintf(header_buf, "%u", _value); \
-			ADD_HEADER(_key, header_buf); \
-		}
-
-	ADD_TIME_HEADER("X-Timestamp", get_now_real());
-
-	ADD_HEADER("X-UStreamer-Online",						bool_to_string(EXPOSED(online)));
-	ADD_UNSIGNED_HEADER("X-UStreamer-Dropped",				EXPOSED(dropped));
-	ADD_UNSIGNED_HEADER("X-UStreamer-Width",				EXPOSED(picture->width));
-	ADD_UNSIGNED_HEADER("X-UStreamer-Height",				EXPOSED(picture->height));
-	ADD_TIME_HEADER("X-UStreamer-Grab-Timestamp",			EXPOSED(picture->grab_ts));
-	ADD_TIME_HEADER("X-UStreamer-Encode-Begin-Timestamp",	EXPOSED(picture->encode_begin_ts));
-	ADD_TIME_HEADER("X-UStreamer-Encode-End-Timestamp",		EXPOSED(picture->encode_end_ts));
-	ADD_TIME_HEADER("X-UStreamer-Expose-Begin-Timestamp",	EXPOSED(expose_begin_ts));
-	ADD_TIME_HEADER("X-UStreamer-Expose-Cmp-Timestamp",		EXPOSED(expose_cmp_ts));
-	ADD_TIME_HEADER("X-UStreamer-Expose-End-Timestamp",		EXPOSED(expose_end_ts));
-	ADD_TIME_HEADER("X-UStreamer-Send-Timestamp",			get_now_monotonic());
-
-#	undef ADD_UNSUGNED_HEADER
-#	undef ADD_TIME_HEADER
-#	undef EXPOSED
-
-	ADD_HEADER("Content-Type", "image/jpeg");
-
-	evhttp_send_reply(request, HTTP_OK, "OK", buf);
-	evbuffer_free(buf);
-}
-
-#undef ADD_HEADER
-
-static void _http_callback_stream(struct evhttp_request *request, void *v_server) {
-	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L2814
-	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L2789
-	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L362
-	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L791
-	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L1458
-
-	struct http_server_t *server = (struct http_server_t *)v_server;
-	struct evhttp_connection *conn;
-	struct evkeyvalq params;
-	struct bufferevent *buf_event;
-	struct stream_client_t *client;
-	char *client_addr;
-	unsigned short client_port;
-	uuid_t uuid;
-
-	PREPROCESS_REQUEST;
-
-	conn = evhttp_request_get_connection(request);
-	if (conn) {
-		A_CALLOC(client, 1);
-		client->server = server;
-		client->request = request;
-		client->need_initial = true;
-		client->need_first_frame = true;
-
-		evhttp_parse_query(evhttp_request_get_uri(request), &params);
-		client->key = uri_get_string(&params, "key");
-		client->extra_headers = uri_get_true(&params, "extra_headers");
-		client->advance_headers = uri_get_true(&params, "advance_headers");
-		client->dual_final_frames = uri_get_true(&params, "dual_final_frames");
-		evhttp_clear_headers(&params);
-
-		uuid_generate(uuid);
-		uuid_unparse_lower(uuid, client->id);
-
-		if (server->run->stream_clients == NULL) {
-			server->run->stream_clients = client;
-		} else {
-			struct stream_client_t *last = server->run->stream_clients;
-
-			for (; last->next != NULL; last = last->next);
-			client->prev = last;
-			last->next = client;
-		}
-		server->run->stream_clients_count += 1;
-
-		if (server->run->stream_clients_count == 1) {
-			if (server->slowdown) {
-				stream_switch_slowdown(server->run->stream, false);
-			}
-
-#			ifdef WITH_GPIO
-			gpio_set_has_http_clients(true);
-#			endif
-		}
-
-		evhttp_connection_get_peer(conn, &client_addr, &client_port);
-		LOG_INFO("HTTP: Registered client: [%s]:%u, id=%s; clients now: %u",
-			client_addr, client_port, client->id, server->run->stream_clients_count);
-
-		buf_event = evhttp_connection_get_bufferevent(conn);
-		if (server->tcp_nodelay && !server->run->unix_fd) {
-			evutil_socket_t fd;
-			int on = 1;
-
-			LOG_DEBUG("HTTP: Setting up TCP_NODELAY to the client [%s]:%u ...", client_addr, client_port);
-			assert((fd = bufferevent_getfd(buf_event)) >= 0);
-			if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (void *)&on, sizeof(on)) != 0) {
-				LOG_PERROR("HTTP: Can't set TCP_NODELAY to the client [%s]:%u", client_addr, client_port);
-			}
-		}
-		bufferevent_setcb(buf_event, NULL, NULL, _http_callback_stream_error, (void *)client);
-		bufferevent_enable(buf_event, EV_READ);
-	} else {
-		evhttp_request_free(request);
-	}
-}
-
-#undef PREPROCESS_REQUEST
-
-static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_client) {
-#	define BOUNDARY "boundarydonotcross"
-#	define RN "\r\n"
-
-	struct stream_client_t *client = (struct stream_client_t *)v_client;
-	struct evbuffer *buf;
-	long double now = get_now_monotonic();
-	long long now_second = floor_ms(now);
-
-	if (now_second != client->fps_accum_second) {
-		client->fps = client->fps_accum;
-		client->fps_accum = 0;
-		client->fps_accum_second = now_second;
-	}
-	client->fps_accum += 1;
-
-	assert((buf = evbuffer_new()));
-
-	// В хроме и его производных есть фундаментальный баг: он отрисовывает
-	// фрейм с задержкой на один, как только ему придут заголовки следующего.
-	// В сочетании с drop_same_frames это дает значительный лаг стрима
-	// при большом количестве дропов (на статичном изображении, где внезапно
-	// что-то изменилось.
-	//
-	// https://bugs.chromium.org/p/chromium/issues/detail?id=527446
-	//
-	// Включение advance_headers заставляет стример отсылать заголовки
-	// будущего фрейма сразу после данных текущего, чтобы триггернуть отрисовку.
-	// Естественным следствием этого является невозможность установки заголовка
-	// Content-Length, так как предсказывать будущее мы еще не научились.
-	// Его наличие не требуется RFC, однако никаких стандартов на MJPG over HTTP
-	// в природе не существует, и никто не может гарантировать, что отсутствие
-	// Content-Length не сломает вещание для каких-нибудь маргинальных браузеров.
-	//
-	// Кроме того, advance_headers форсит отключение заголовков X-UStreamer-*
-	// по тем же причинам, по которым у нас нет Content-Length.
-
-#	define ADD_ADVANCE_HEADERS \
-		assert(evbuffer_add_printf(buf, \
-			"Content-Type: image/jpeg" RN "X-Timestamp: %.06Lf" RN RN, get_now_real()))
-
-	if (client->need_initial) {
-		assert(evbuffer_add_printf(buf, "HTTP/1.0 200 OK" RN));
-		if (client->server->allow_origin[0] != '\0') {
-			assert(evbuffer_add_printf(buf, "Access-Control-Allow-Origin: %s" RN, client->server->allow_origin));
-		}
-		assert(evbuffer_add_printf(buf,
-			"Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, pre-check=0, post-check=0, max-age=0" RN
-			"Pragma: no-cache" RN
-			"Expires: Mon, 3 Jan 2000 12:34:56 GMT" RN
-			"Set-Cookie: stream_client=%s/%s; path=/; max-age=30" RN
-			"Content-Type: multipart/x-mixed-replace;boundary=" BOUNDARY RN
-			RN
-			"--" BOUNDARY RN,
-			(client->key != NULL ? client->key : "0"),
-			client->id
-		));
-
-		if (client->advance_headers) {
-			ADD_ADVANCE_HEADERS;
-		}
-
-		assert(!bufferevent_write_buffer(buf_event, buf));
-		client->need_initial = false;
-	}
-
-#	define EXPOSED(_next) client->server->run->exposed->_next
-
-	if (!client->advance_headers) {
-		assert(evbuffer_add_printf(buf,
-			"Content-Type: image/jpeg" RN
-			"Content-Length: %zu" RN
-			"X-Timestamp: %.06Lf" RN
-			"%s",
-			EXPOSED(picture->used),
-			get_now_real(),
-			(client->extra_headers ? "" : RN)
-		));
-		if (client->extra_headers) {
-			assert(evbuffer_add_printf(buf,
-				"X-UStreamer-Online: %s" RN
-				"X-UStreamer-Dropped: %u" RN
-				"X-UStreamer-Width: %u" RN
-				"X-UStreamer-Height: %u" RN
-				"X-UStreamer-Client-FPS: %u" RN
-				"X-UStreamer-Grab-Time: %.06Lf" RN
-				"X-UStreamer-Encode-Begin-Time: %.06Lf" RN
-				"X-UStreamer-Encode-End-Time: %.06Lf" RN
-				"X-UStreamer-Expose-Begin-Time: %.06Lf" RN
-				"X-UStreamer-Expose-Cmp-Time: %.06Lf" RN
-				"X-UStreamer-Expose-End-Time: %.06Lf" RN
-				"X-UStreamer-Send-Time: %.06Lf" RN
-				RN,
-				bool_to_string(EXPOSED(online)),
-				EXPOSED(dropped),
-				EXPOSED(picture->width),
-				EXPOSED(picture->height),
-				client->fps,
-				EXPOSED(picture->grab_ts),
-				EXPOSED(picture->encode_begin_ts),
-				EXPOSED(picture->encode_end_ts),
-				EXPOSED(expose_begin_ts),
-				EXPOSED(expose_cmp_ts),
-				EXPOSED(expose_end_ts),
-				now
-			));
-		}
-	}
-
-	assert(!evbuffer_add(buf, (void *)EXPOSED(picture->data), EXPOSED(picture->used)));
-	assert(evbuffer_add_printf(buf, RN "--" BOUNDARY RN));
-
-	if (client->advance_headers) {
-		ADD_ADVANCE_HEADERS;
-	}
-
-	assert(!bufferevent_write_buffer(buf_event, buf));
-	evbuffer_free(buf);
-
-	bufferevent_setcb(buf_event, NULL, NULL, _http_callback_stream_error, (void *)client);
-	bufferevent_enable(buf_event, EV_READ);
-
-#	undef EXPOSED
-#	undef ADD_ADVANCE_HEADERS
-#	undef RN
-#	undef BOUNDARY
-}
-
-static void _http_callback_stream_error(UNUSED struct bufferevent *buf_event, UNUSED short what, void *v_client) {
-	struct stream_client_t *client = (struct stream_client_t *)v_client;
-	struct evhttp_connection *conn;
-	char *client_addr = "???";
-	unsigned short client_port = 0;
-	char reason[2048] = {0};
-
-	_format_bufferevent_reason(what, reason);
-
-#	define RUN(_next) client->server->run->_next
-
-	assert(RUN(stream_clients_count) > 0);
-	RUN(stream_clients_count) -= 1;
-
-	if (RUN(stream_clients_count) == 0) {
-		if (client->server->slowdown) {
-			stream_switch_slowdown(RUN(stream), true);
-		}
-
-#		ifdef WITH_GPIO
-		gpio_set_has_http_clients(false);
-#		endif
-	}
-
-	conn = evhttp_request_get_connection(client->request);
-	if (conn) {
-		evhttp_connection_get_peer(conn, &client_addr, &client_port);
-	}
-
-	LOG_INFO("HTTP: Disconnected client: [%s]:%u, id=%s, %s; clients now: %u",
-		client_addr, client_port, client->id, reason, RUN(stream_clients_count));
-	if (conn) {
-		evhttp_connection_free(conn);
-	}
-
-	if (client->prev == NULL) {
-		RUN(stream_clients) = client->next;
-	} else {
-		client->prev->next = client->next;
-	}
-	if (client->next != NULL) {
-		client->next->prev = client->prev;
-	}
-	free(client->key);
-	free(client);
-
-#	undef RUN
-}
-
-static void _http_queue_send_stream(struct http_server_t *server, bool stream_updated, bool picture_updated) {
-	struct evhttp_connection *conn;
-	struct bufferevent *buf_event;
-	long long now;
-	bool has_clients = false;
-	bool queued = false;
-
-	for (struct stream_client_t *client = server->run->stream_clients; client != NULL; client = client->next) {
-		conn = evhttp_request_get_connection(client->request);
-		if (conn) {
-			// Фикс для бага WebKit. При включенной опции дропа одинаковых фреймов,
-			// WebKit отрисовывает последний фрейм в серии с некоторой задержкой,
-			// и нужно послать два фрейма, чтобы серия была вовремя завершена.
-			// Это похоже на баг Blink (см. _http_callback_stream_write() и advance_headers),
-			// но фикс для него не лечит проблему вебкита. Такие дела.
-
-			bool dual_update = (
-				server->drop_same_frames
-				&& client->dual_final_frames
-				&& stream_updated
-				&& client->updated_prev
-				&& !picture_updated
-			);
-
-			if (dual_update || picture_updated || client->need_first_frame) {
-				buf_event = evhttp_connection_get_bufferevent(conn);
-				bufferevent_setcb(buf_event, NULL, _http_callback_stream_write, _http_callback_stream_error, (void *)client);
-				bufferevent_enable(buf_event, EV_READ|EV_WRITE);
-
-				client->need_first_frame = false;
-				client->updated_prev = (picture_updated || client->need_first_frame); // Игнорировать dual
-				queued = true;
-			} else if (stream_updated) { // Для dual
-				client->updated_prev = false;
-			}
-
-			has_clients = true;
-		}
-	}
-
-	if (queued) {
-		static unsigned queued_fps_accum = 0;
-		static long long queued_fps_second = 0;
-
-		if ((now = floor_ms(get_now_monotonic())) != queued_fps_second) {
-			server->run->exposed->queued_fps = queued_fps_accum;
-			queued_fps_accum = 0;
-			queued_fps_second = now;
-		}
-		queued_fps_accum += 1;
-	} else if (!has_clients) {
-		server->run->exposed->queued_fps = 0;
-	}
-}
-
-static void _http_exposed_refresh(UNUSED int fd, UNUSED short what, void *v_server) {
-	struct http_server_t *server = (struct http_server_t *)v_server;
-	bool stream_updated = false;
-	bool picture_updated = false;
-
-#	define UNLOCK_STREAM { \
-			atomic_store(&server->run->stream->updated, false); \
-			A_MUTEX_UNLOCK(&server->run->stream->mutex); \
-		}
-
-	if (atomic_load(&server->run->stream->updated)) {
-		LOG_DEBUG("Refreshing HTTP exposed ...");
-		A_MUTEX_LOCK(&server->run->stream->mutex);
-		if (server->run->stream->online) {
-			picture_updated = _expose_new_picture_unsafe(server);
-			UNLOCK_STREAM;
-		} else {
-			UNLOCK_STREAM;
-			picture_updated = _expose_blank_picture(server);
-		}
-		stream_updated = true;
-	} else if (!server->run->exposed->online) {
-		LOG_DEBUG("Refreshing HTTP exposed (BLANK) ...");
-		picture_updated = _expose_blank_picture(server);
-		stream_updated = true;
-	}
-
-#	undef UNLOCK_STREAM
-
-	_http_queue_send_stream(server, stream_updated, picture_updated);
-
-#	define EXPOSED(_next) server->run->exposed->_next
-
-	if (
-		picture_updated
-		&& server->notify_parent
-		&& (
-			EXPOSED(notify_last_online) != EXPOSED(online)
-			|| EXPOSED(notify_last_width) != EXPOSED(picture->width)
-			|| EXPOSED(notify_last_height) != EXPOSED(picture->height)
-		)
-	) {
-		EXPOSED(notify_last_online) = EXPOSED(online);
-		EXPOSED(notify_last_width) = EXPOSED(picture->width);
-		EXPOSED(notify_last_height) = EXPOSED(picture->height);
-		process_notify_parent();
-	}
-
-#	undef EXPOSED
-}
-
-static bool _expose_new_picture_unsafe(struct http_server_t *server) {
-#	define EXPOSED(_next) server->run->exposed->_next
-#	define STREAM(_next) server->run->stream->_next
-
-	EXPOSED(captured_fps) = STREAM(captured_fps);
-	EXPOSED(expose_begin_ts) = get_now_monotonic();
-
-	if (server->drop_same_frames) {
-		if (
-			EXPOSED(online)
-			&& EXPOSED(dropped) < server->drop_same_frames
-			&& picture_compare(EXPOSED(picture), STREAM(picture))
-		) {
-			EXPOSED(expose_cmp_ts) = get_now_monotonic();
-			EXPOSED(expose_end_ts) = EXPOSED(expose_cmp_ts);
-			LOG_VERBOSE("HTTP: Dropped same frame number %u; cmp_time=%.06Lf",
-				EXPOSED(dropped), EXPOSED(expose_cmp_ts) - EXPOSED(expose_begin_ts));
-			EXPOSED(dropped) += 1;
-			return false; // Not updated
-		} else {
-			EXPOSED(expose_cmp_ts) = get_now_monotonic();
-			LOG_VERBOSE("HTTP: Passed same frame check (frames are differ); cmp_time=%.06Lf",
-				EXPOSED(expose_cmp_ts) - EXPOSED(expose_begin_ts));
-		}
-	}
-
-	picture_copy(STREAM(picture), EXPOSED(picture));
-
-#	undef STREAM
-
-	EXPOSED(online) = true;
-	EXPOSED(dropped) = 0;
-	EXPOSED(expose_cmp_ts) = EXPOSED(expose_begin_ts);
-	EXPOSED(expose_end_ts) = get_now_monotonic();
-
-	LOG_VERBOSE("HTTP: Exposed new frame; full exposition time = %.06Lf",
-		 EXPOSED(expose_end_ts) - EXPOSED(expose_begin_ts));
-
-#	undef EXPOSED
-	return true; // Updated
-}
-
-static bool _expose_blank_picture(struct http_server_t *server) {
-#	define EXPOSED(_next) server->run->exposed->_next
-
-	EXPOSED(expose_begin_ts) = get_now_monotonic();
-	EXPOSED(expose_cmp_ts) = EXPOSED(expose_begin_ts);
-
-#	define EXPOSE_BLANK picture_copy(server->run->blank, EXPOSED(picture))
-
-	if (EXPOSED(online)) { // Если переходим из online в offline
-		if (server->last_as_blank < 0) { // Если last_as_blank выключено, просто покажем картинку
-			LOG_INFO("HTTP: Changed picture to BLANK");
-			EXPOSE_BLANK;
-		} else if (server->last_as_blank > 0) { // Если нужен таймер - запустим
-			LOG_INFO("HTTP: Freezing last alive frame for %d seconds", server->last_as_blank);
-			EXPOSED(last_as_blank_ts) = get_now_monotonic();
-		} else { // last_as_blank == 0 - показываем последний фрейм вечно
-			LOG_INFO("HTTP: Freezing last alive frame forever");
-		}
-		goto updated;
-	}
-
-	if ( // Если уже оффлайн, включена фича last_as_blank с таймером и он запущен
-		server->last_as_blank > 0
-		&& EXPOSED(last_as_blank_ts) > 0
-		&& EXPOSED(last_as_blank_ts) + server->last_as_blank < EXPOSED(expose_begin_ts)
-	) {
-		LOG_INFO("HTTP: Changed last alive frame to BLANK");
-		EXPOSE_BLANK;
-		EXPOSED(last_as_blank_ts) = 0; // Останавливаем таймер
-		goto updated;
-	}
-
-#	undef EXPOSE_BLANK
-
-	if (EXPOSED(dropped) < server->run->drop_same_frames_blank) {
-		LOG_PERF("HTTP: Dropped same frame (BLANK) number %u", EXPOSED(dropped));
-		EXPOSED(dropped) += 1;
-		EXPOSED(expose_end_ts) = get_now_monotonic();
-		return false; // Not updated
-	}
-
-	updated:
-		EXPOSED(captured_fps) = 0;
-		EXPOSED(online) = false;
-		EXPOSED(dropped) = 0;
-		EXPOSED(expose_end_ts) = get_now_monotonic();
-		return true; // Updated
-
-#	undef EXPOSED
-}
-
-static void _format_bufferevent_reason(short what, char *reason) {
-	char perror_buf[1024] = {0};
-	char *perror_ptr = errno_to_string(EVUTIL_SOCKET_ERROR(), perror_buf, 1024); // evutil_socket_error_to_string() is not thread-sage
-	bool first = true;
-
-	strcat(reason, perror_ptr);
-	strcat(reason, " (");
-
-#	define FILL_REASON(_bev, _name) { \
-			if (what & _bev) { \
-				if (first) { \
-					first = false; \
-				} else { \
-					strcat(reason, ","); \
-				} \
-				strcat(reason, _name); \
-			} \
-		}
-
-	FILL_REASON(BEV_EVENT_READING, "reading");
-	FILL_REASON(BEV_EVENT_WRITING, "writing");
-	FILL_REASON(BEV_EVENT_ERROR, "error");
-	FILL_REASON(BEV_EVENT_TIMEOUT, "timeout");
-	FILL_REASON(BEV_EVENT_EOF, "eof"); // cppcheck-suppress unreadVariable
-
-#	undef FILL_REASON
-
-	strcat(reason, ")");
-}

src/http/server.h

@@ -1,120 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#pragma once
-
-#include <stdbool.h>
-
-#include <sys/stat.h>
-
-#include <event2/event.h>
-#include <event2/http.h>
-#include <event2/util.h>
-
-#include "../picture.h"
-#include "../stream.h"
-
-
-struct stream_client_t {
-	struct http_server_t	*server;
-	struct evhttp_request	*request;
-
-	char					*key;
-	bool					extra_headers;
-	bool					advance_headers;
-	bool					dual_final_frames;
-
-	char					id[37]; // ex. "1b4e28ba-2fa1-11d2-883f-0016d3cca427" + "\0"
-	bool					need_initial;
-	bool					need_first_frame;
-	bool					updated_prev;
-	unsigned				fps;
-	unsigned				fps_accum;
-	long long				fps_accum_second;
-
-	struct stream_client_t	*prev;
-	struct stream_client_t	*next;
-};
-
-struct exposed_t {
-	struct picture_t	*picture;
-	unsigned			captured_fps;
-	unsigned			queued_fps;
-	bool				online;
-	unsigned			dropped;
-	long double			expose_begin_ts;
-	long double			expose_cmp_ts;
-	long double			expose_end_ts;
-	long double			last_as_blank_ts;
-
-	bool		notify_last_online;
-	unsigned	notify_last_width;
-	unsigned	notify_last_height;
-};
-
-struct http_server_runtime_t {
-	struct event_base		*base;
-	struct evhttp			*http;
-	evutil_socket_t			unix_fd;
-	char					*auth_token;
-	struct event			*refresh;
-	struct stream_t			*stream;
-	struct exposed_t		*exposed;
-	struct stream_client_t	*stream_clients;
-	unsigned				stream_clients_count;
-	struct picture_t		*blank;
-	unsigned				drop_same_frames_blank;
-};
-
-struct http_server_t {
-	char		*host;
-	unsigned	port;
-	char		*unix_path;
-	bool		unix_rm;
-	mode_t		unix_mode;
-	bool		tcp_nodelay;
-	unsigned	timeout;
-
-	char		*user;
-	char		*passwd;
-	char		*static_path;
-	char		*allow_origin;
-
-	char		*blank_path;
-	int			last_as_blank;
-	unsigned	drop_same_frames;
-	bool		slowdown;
-	unsigned	fake_width;
-	unsigned	fake_height;
-
-	bool		notify_parent;
-
-	struct http_server_runtime_t *run;
-};
-
-
-struct http_server_t *http_server_init(struct stream_t *stream);
-void http_server_destroy(struct http_server_t *server);
-
-int http_server_listen(struct http_server_t *server);
-void http_server_loop(struct http_server_t *server);
-void http_server_loop_break(struct http_server_t *server);

src/libs/base64.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,11 +22,6 @@
 
 #include "base64.h"
 
-#include <stdlib.h>
-#include <string.h>
-
-#include "../tools.h"
-
 
 static const char _ENCODING_TABLE[] = {
 	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
@@ -42,30 +37,36 @@ static const char _ENCODING_TABLE[] = {
 static const unsigned _MOD_TABLE[] = {0, 2, 1};
 
 
-char *base64_encode(const unsigned char *str) {
-	size_t str_len = strlen((const char *)str);
-	size_t encoded_size = 4 * ((str_len + 2) / 3) + 1; // +1 for '\0'
-	char *encoded;
+void base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated) {
+	const size_t encoded_size = 4 * ((size + 2) / 3) + 1; // +1 for '\0'
 
-	A_CALLOC(encoded, encoded_size);
+	if (*encoded == NULL || (allocated && *allocated < encoded_size)) {
+		A_REALLOC(*encoded, encoded_size);
+		if (allocated) {
+			*allocated = encoded_size;
+		}
+	}
 
-	for (unsigned str_index = 0, encoded_index = 0; str_index < str_len;) {
-		unsigned octet_a = (str_index < str_len ? (unsigned char)str[str_index++] : 0);
-		unsigned octet_b = (str_index < str_len ? (unsigned char)str[str_index++] : 0);
-		unsigned octet_c = (str_index < str_len ? (unsigned char)str[str_index++] : 0);
+	for (unsigned data_index = 0, encoded_index = 0; data_index < size;) {
+#		define OCTET(_name) unsigned _name = (data_index < size ? (uint8_t)data[data_index++] : 0)
+		OCTET(octet_a);
+		OCTET(octet_b);
+		OCTET(octet_c);
+#		undef OCTET
 
 		unsigned triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
 
-		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 3 * 6) & 0x3F];
-		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 2 * 6) & 0x3F];
-		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 1 * 6) & 0x3F];
-		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 0 * 6) & 0x3F];
+#		define ENCODE(_offset) (*encoded)[encoded_index++] = _ENCODING_TABLE[(triple >> _offset * 6) & 0x3F]
+		ENCODE(3);
+		ENCODE(2);
+		ENCODE(1);
+		ENCODE(0);
+#		undef ENCODE
 	}
 
-	for (unsigned index = 0; index < _MOD_TABLE[str_len % 3]; index++) {
-		encoded[encoded_size - 2 - index] = '=';
+	for (unsigned index = 0; index < _MOD_TABLE[size % 3]; index++) {
+		(*encoded)[encoded_size - 2 - index] = '=';
 	}
 
-	encoded[encoded_size - 1] = '\0';
-	return encoded;
+	(*encoded)[encoded_size - 1] = '\0';
 }

src/libs/base64.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,8 +22,13 @@
 
 #pragma once
 
-#include "../../device.h"
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <sys/types.h>
+
+#include "tools.h"
 
 
-int hw_encoder_prepare(struct device_t *dev, unsigned quality);
-void hw_encoder_compress_buffer(struct device_t *dev, unsigned index);
+void base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated);

src/libs/config.h

@@ -0,0 +1,32 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#define VERSION_MAJOR 5
+#define VERSION_MINOR 0
+
+#define MAKE_VERSION2(_major, _minor) #_major "." #_minor
+#define MAKE_VERSION1(_major, _minor) MAKE_VERSION2(_major, _minor)
+#define VERSION MAKE_VERSION1(VERSION_MAJOR, VERSION_MINOR)
+
+#define VERSION_U ((unsigned)(VERSION_MAJOR * 1000 + VERSION_MINOR))

src/libs/frame.c

@@ -0,0 +1,107 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "frame.h"
+
+
+frame_s *frame_init(void) {
+	frame_s *frame;
+	A_CALLOC(frame, 1);
+	frame_realloc_data(frame, 512 * 1024);
+	frame->dma_fd = -1;
+	return frame;
+}
+
+void frame_destroy(frame_s *frame) {
+	if (frame->data) {
+		free(frame->data);
+	}
+	free(frame);
+}
+
+void frame_realloc_data(frame_s *frame, size_t size) {
+	if (frame->allocated < size) {
+		A_REALLOC(frame->data, size);
+		frame->allocated = size;
+	}
+}
+
+void frame_set_data(frame_s *frame, const uint8_t *data, size_t size) {
+	frame_realloc_data(frame, size);
+	memcpy(frame->data, data, size);
+	frame->used = size;
+}
+
+void frame_append_data(frame_s *frame, const uint8_t *data, size_t size) {
+	size_t new_used = frame->used + size;
+	frame_realloc_data(frame, new_used);
+	memcpy(frame->data + frame->used, data, size);
+	frame->used = new_used;
+}
+
+void frame_copy(const frame_s *src, frame_s *dest) {
+	frame_set_data(dest, src->data, src->used);
+	FRAME_COPY_META(src, dest);
+}
+
+bool frame_compare(const frame_s *a, const frame_s *b) {
+	return (
+		a->allocated && b->allocated
+		&& FRAME_COMPARE_META_USED_NOTS(a, b)
+		&& !memcmp(a->data, b->data, b->used)
+	);
+}
+
+unsigned frame_get_padding(const frame_s *frame) {
+	unsigned bytes_per_pixel = 0;
+	switch (frame->format) {
+		case V4L2_PIX_FMT_YUYV:
+		case V4L2_PIX_FMT_UYVY:
+		case V4L2_PIX_FMT_RGB565: bytes_per_pixel = 2; break;
+		case V4L2_PIX_FMT_RGB24: bytes_per_pixel = 3; break;
+		// case V4L2_PIX_FMT_H264:
+		case V4L2_PIX_FMT_MJPEG:
+		case V4L2_PIX_FMT_JPEG: bytes_per_pixel = 0; break;
+		default: assert(0 && "Unknown format");
+	}
+	if (bytes_per_pixel > 0 && frame->stride > frame->width) {
+		return (frame->stride - frame->width * bytes_per_pixel);
+	}
+	return 0;
+}
+
+const char *fourcc_to_string(unsigned format, char *buf, size_t size) {
+	assert(size >= 8);
+	buf[0] = format & 0x7F;
+	buf[1] = (format >> 8) & 0x7F;
+	buf[2] = (format >> 16) & 0x7F;
+	buf[3] = (format >> 24) & 0x7F;
+	if (format & ((unsigned)1 << 31)) {
+		buf[4] = '-';
+		buf[5] = 'B';
+		buf[6] = 'E';
+		buf[7] = '\0';
+	} else {
+		buf[4] = '\0';
+	}
+	return buf;
+}

src/libs/frame.h

@@ -0,0 +1,118 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <linux/videodev2.h>
+
+#include "tools.h"
+
+
+typedef struct {
+	uint8_t	*data;
+	size_t	used;
+	size_t	allocated;
+	int		dma_fd;
+
+	unsigned width;
+	unsigned height;
+	unsigned format;
+	unsigned stride;
+	// Stride is a bytesperline in V4L2
+	// https://www.kernel.org/doc/html/v4.14/media/uapi/v4l/pixfmt-v4l2.html
+	// https://medium.com/@oleg.shipitko/what-does-stride-mean-in-image-processing-bba158a72bcd
+
+	bool online;
+	bool key;
+
+	long double	grab_ts;
+	long double	encode_begin_ts;
+	long double	encode_end_ts;
+} frame_s;
+
+
+#define FRAME_COPY_META(_src, _dest) { \
+		_dest->width = _src->width; \
+		_dest->height = _src->height; \
+		_dest->format = _src->format; \
+		_dest->stride = _src->stride; \
+		_dest->online = _src->online; \
+		_dest->key = _src->key; \
+		_dest->grab_ts = _src->grab_ts; \
+		_dest->encode_begin_ts = _src->encode_begin_ts; \
+		_dest->encode_end_ts = _src->encode_end_ts; \
+	}
+
+static inline void frame_copy_meta(const frame_s *src, frame_s *dest) {
+	FRAME_COPY_META(src, dest);
+}
+
+#define FRAME_COMPARE_META_USED_NOTS(_a, _b) ( \
+		_a->used == _b->used \
+		&& _a->width == _b->width \
+		&& _a->height == _b->height \
+		&& _a->format == _b->format \
+		&& _a->stride == _b->stride \
+		&& _a->online == _b->online \
+		&& _a->key == _b->key \
+	)
+
+
+static inline void frame_encoding_begin(const frame_s *src, frame_s *dest, unsigned format) {
+	assert(src->used > 0);
+	frame_copy_meta(src, dest);
+	dest->encode_begin_ts = get_now_monotonic();
+	dest->format = format;
+	dest->stride = 0;
+	dest->used = 0;
+}
+
+static inline void frame_encoding_end(frame_s *dest) {
+	assert(dest->used > 0);
+	dest->encode_end_ts = get_now_monotonic();
+}
+
+
+frame_s *frame_init(void);
+void frame_destroy(frame_s *frame);
+
+void frame_realloc_data(frame_s *frame, size_t size);
+void frame_set_data(frame_s *frame, const uint8_t *data, size_t size);
+void frame_append_data(frame_s *frame, const uint8_t *data, size_t size);
+
+void frame_copy(const frame_s *src, frame_s *dest);
+bool frame_compare(const frame_s *a, const frame_s *b);
+
+unsigned frame_get_padding(const frame_s *frame);
+
+const char *fourcc_to_string(unsigned format, char *buf, size_t size);
+
+static inline bool is_jpeg(unsigned format) {
+	return (format == V4L2_PIX_FMT_JPEG || format == V4L2_PIX_FMT_MJPEG);
+}

src/libs/list.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,27 +22,50 @@
 
 #pragma once
 
-#include <string.h>
-
-#include <IL/OMX_Core.h>
-#include <IL/OMX_Component.h>
+#include <assert.h>
 
 
-#define OMX_INIT_STRUCTURE(_var) { \
-		memset(&(_var), 0, sizeof(_var)); \
-		(_var).nSize = sizeof(_var); \
-		(_var).nVersion.nVersion = OMX_VERSION; \
-		(_var).nVersion.s.nVersionMajor = OMX_VERSION_MAJOR; \
-		(_var).nVersion.s.nVersionMinor = OMX_VERSION_MINOR; \
-		(_var).nVersion.s.nRevision = OMX_VERSION_REVISION; \
-		(_var).nVersion.s.nStep = OMX_VERSION_STEP; \
+#define LIST_STRUCT(...) \
+	__VA_ARGS__ *prev; \
+	__VA_ARGS__ *next;
+
+#define LIST_ITERATE(_first, _item, ...) { \
+		for (__typeof__(_first) _item = _first; _item;) { \
+			__typeof__(_first) _next = _item->next; \
+			__VA_ARGS__ \
+			_item = _next; \
+		} \
 	}
 
+#define LIST_APPEND(_first, _item) { \
+		if (_first == NULL) { \
+			_first = _item; \
+		} else { \
+			__typeof__(_first) _last = _first; \
+			for (; _last->next; _last = _last->next); \
+			_item->prev = _last; \
+			_last->next = _item; \
+		} \
+	}
 
-int component_enable_port(OMX_HANDLETYPE *component, OMX_U32 port);
-int component_disable_port(OMX_HANDLETYPE *component, OMX_U32 port);
+#define LIST_APPEND_C(_first, _item, _count) { \
+		LIST_APPEND(_first, _item); \
+		++(_count); \
+	}
 
-int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef, OMX_U32 port);
-int component_set_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef);
+#define LIST_REMOVE(_first, _item) { \
+		if (_item->prev == NULL) { \
+			_first = _item->next; \
+		} else { \
+			_item->prev->next = _item->next; \
+		} \
+		if (_item->next != NULL) { \
+			_item->next->prev = _item->prev; \
+		} \
+	}
 
-int component_set_state(OMX_HANDLETYPE *component, OMX_STATETYPE state);
+#define LIST_REMOVE_C(_first, _item, _count) { \
+		LIST_REMOVE(_first, _item); \
+		assert((_count) >= 1); \
+		--(_count); \
+	}

src/libs/logging.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -20,15 +20,11 @@
 *****************************************************************************/
 
 
-#include <stdbool.h>
-
-#include <pthread.h>
-
 #include "logging.h"
 
 
-enum log_level_t log_level;
+enum log_level_t us_log_level;
 
-bool log_colored;
+bool us_log_colored;
 
-pthread_mutex_t log_mutex;
+pthread_mutex_t us_log_mutex;

src/libs/logging.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -45,23 +45,23 @@ enum log_level_t {
 };
 
 
-extern enum log_level_t log_level;
+extern enum log_level_t us_log_level;
 
-extern bool log_colored;
+extern bool us_log_colored;
 
-extern pthread_mutex_t log_mutex;
+extern pthread_mutex_t us_log_mutex;
 
 
 #define LOGGING_INIT { \
-		log_level = LOG_LEVEL_INFO; \
-		log_colored = isatty(1); \
-		A_MUTEX_INIT(&log_mutex); \
+		us_log_level = LOG_LEVEL_INFO; \
+		us_log_colored = isatty(2); \
+		A_MUTEX_INIT(&us_log_mutex); \
 	}
 
-#define LOGGING_DESTROY A_MUTEX_DESTROY(&log_mutex)
+#define LOGGING_DESTROY A_MUTEX_DESTROY(&us_log_mutex)
 
-#define LOGGING_LOCK	A_MUTEX_LOCK(&log_mutex)
-#define LOGGING_UNLOCK	A_MUTEX_UNLOCK(&log_mutex)
+#define LOGGING_LOCK	A_MUTEX_LOCK(&us_log_mutex)
+#define LOGGING_UNLOCK	A_MUTEX_UNLOCK(&us_log_mutex)
 
 
 #define COLOR_GRAY		"\x1b[30;1m"
@@ -76,15 +76,15 @@ extern pthread_mutex_t log_mutex;
 #define SEP_INFO(_ch) { \
 		LOGGING_LOCK; \
 		for (int _i = 0; _i < 80; ++_i) { \
-			putchar(_ch); \
+			fputc(_ch, stderr); \
 		} \
-		putchar('\n'); \
-		fflush(stdout); \
+		fputc('\n', stderr); \
+		fflush(stderr); \
 		LOGGING_UNLOCK; \
 	}
 
 #define SEP_DEBUG(_ch) { \
-		if (log_level >= LOG_LEVEL_DEBUG) { \
+		if (us_log_level >= LOG_LEVEL_DEBUG) { \
 			SEP_INFO(_ch); \
 		} \
 	}
@@ -93,15 +93,16 @@ extern pthread_mutex_t log_mutex;
 #define LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ...) { \
 		char _tname_buf[MAX_THREAD_NAME] = {0}; \
 		thread_get_name(_tname_buf); \
-		if (log_colored) { \
-			printf(COLOR_GRAY "-- " _label_color _label COLOR_GRAY " [%.03Lf %9s]" " -- " COLOR_RESET _msg_color _msg COLOR_RESET, \
+		if (us_log_colored) { \
+			fprintf(stderr, COLOR_GRAY "-- " _label_color _label COLOR_GRAY \
+				" [%.03Lf %9s]" " -- " COLOR_RESET _msg_color _msg COLOR_RESET, \
 				get_now_monotonic(), _tname_buf, ##__VA_ARGS__); \
 		} else { \
-			printf("-- " _label " [%.03Lf %9s] -- " _msg, \
+			fprintf(stderr, "-- " _label " [%.03Lf %9s] -- " _msg, \
 				get_now_monotonic(), _tname_buf, ##__VA_ARGS__); \
 		} \
-		putchar('\n'); \
-		fflush(stdout); \
+		fputc('\n', stderr); \
+		fflush(stderr); \
 	}
 
 #define LOG_PRINTF(_label_color, _label, _msg_color, _msg, ...) { \
@@ -129,43 +130,33 @@ extern pthread_mutex_t log_mutex;
 	}
 
 #define LOG_PERF(_msg, ...) { \
-		if (log_level >= LOG_LEVEL_PERF) { \
+		if (us_log_level >= LOG_LEVEL_PERF) { \
 			LOG_PRINTF(COLOR_CYAN, "PERF ", COLOR_CYAN, _msg, ##__VA_ARGS__); \
 		} \
 	}
 
 #define LOG_PERF_FPS(_msg, ...) { \
-		if (log_level >= LOG_LEVEL_PERF) { \
+		if (us_log_level >= LOG_LEVEL_PERF) { \
 			LOG_PRINTF(COLOR_YELLOW, "PERF ", COLOR_YELLOW, _msg, ##__VA_ARGS__); \
 		} \
 	}
 
 #define LOG_VERBOSE(_msg, ...) { \
-		if (log_level >= LOG_LEVEL_VERBOSE) { \
+		if (us_log_level >= LOG_LEVEL_VERBOSE) { \
 			LOG_PRINTF(COLOR_BLUE, "VERB ", COLOR_BLUE, _msg, ##__VA_ARGS__); \
 		} \
 	}
 
 #define LOG_VERBOSE_PERROR(_msg, ...) { \
-		if (log_level >= LOG_LEVEL_VERBOSE) { \
+		if (us_log_level >= LOG_LEVEL_VERBOSE) { \
 			char _perror_buf[1024] = {0}; \
-			char *_perror_ptr = errno_to_string(errno, _perror_buf, 1024); \
+			char *_perror_ptr = errno_to_string(errno, _perror_buf, 1023); \
 			LOG_PRINTF(COLOR_BLUE, "VERB ", COLOR_BLUE, _msg ": %s", ##__VA_ARGS__, _perror_ptr); \
 		} \
 	}
 
 #define LOG_DEBUG(_msg, ...) { \
-		if (log_level >= LOG_LEVEL_DEBUG) { \
+		if (us_log_level >= LOG_LEVEL_DEBUG) { \
 			LOG_PRINTF(COLOR_GRAY, "DEBUG", COLOR_GRAY, _msg, ##__VA_ARGS__); \
 		} \
 	}
-
-
-INLINE char *errno_to_string(int error, char *buf, size_t size) {
-#	if defined(__GLIBC__) && defined(_GNU_SOURCE)
-	return strerror_r(error, buf, size);
-#	else
-	strerror_r(error, buf, size);
-	return buf;
-#	endif
-}

src/libs/memsink.c

@@ -0,0 +1,197 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "memsink.h"
+
+
+memsink_s *memsink_init(
+	const char *name, const char *obj, bool server,
+	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout) {
+
+	memsink_s *sink;
+	A_CALLOC(sink, 1);
+	sink->name = name;
+	sink->obj = obj;
+	sink->server = server;
+	sink->rm = rm;
+	sink->client_ttl = client_ttl;
+	sink->timeout = timeout;
+	sink->fd = -1;
+	sink->mem = MAP_FAILED;
+	atomic_init(&sink->has_clients, false);
+
+	LOG_INFO("Using %s-sink: %s", name, obj);
+
+	mode_t mask = umask(0);
+	sink->fd = shm_open(sink->obj, (server ? O_RDWR | O_CREAT : O_RDWR), mode);
+	umask(mask);
+	if (sink->fd == -1) {
+		umask(mask);
+		LOG_PERROR("%s-sink: Can't open shared memory", name);
+		goto error;
+	}
+
+	if (sink->server && ftruncate(sink->fd, sizeof(memsink_shared_s)) < 0) {
+		LOG_PERROR("%s-sink: Can't truncate shared memory", name);
+		goto error;
+	}
+
+	if ((sink->mem = memsink_shared_map(sink->fd)) == NULL) {
+		LOG_PERROR("%s-sink: Can't mmap shared memory", name);
+		goto error;
+	}
+
+	return sink;
+
+	error:
+		memsink_destroy(sink);
+		return NULL;
+}
+
+void memsink_destroy(memsink_s *sink) {
+	if (sink->mem != MAP_FAILED) {
+		if (memsink_shared_unmap(sink->mem) < 0) {
+			LOG_PERROR("%s-sink: Can't unmap shared memory", sink->name);
+		}
+	}
+	if (sink->fd >= 0) {
+		if (close(sink->fd) < 0) {
+			LOG_PERROR("%s-sink: Can't close shared memory fd", sink->name);
+		}
+		if (sink->rm && shm_unlink(sink->obj) < 0) {
+			if (errno != ENOENT) {
+				LOG_PERROR("%s-sink: Can't remove shared memory", sink->name);
+			}
+		}
+	}
+	free(sink);
+}
+
+bool memsink_server_check(memsink_s *sink, const frame_s *frame) {
+	// Return true (the need to write to memsink) on any of these conditions:
+	//   - EWOULDBLOCK - we have an active client;
+	//   - Incorrect magic or version - need to first write;
+	//   - We have some active clients by last_client_ts;
+	//   - Frame meta differs (like size, format, but not timestamp).
+
+	assert(sink->server);
+
+	if (flock(sink->fd, LOCK_EX | LOCK_NB) < 0) {
+		if (errno == EWOULDBLOCK) {
+			atomic_store(&sink->has_clients, true);
+			return true;
+		}
+		LOG_PERROR("%s-sink: Can't lock memory", sink->name);
+		return false;
+	}
+
+	if (sink->mem->magic != MEMSINK_MAGIC || sink->mem->version != MEMSINK_VERSION) {
+		return true;
+	}
+
+	bool has_clients = (sink->mem->last_client_ts + sink->client_ttl > get_now_monotonic());
+	atomic_store(&sink->has_clients, has_clients);
+
+	if (flock(sink->fd, LOCK_UN) < 0) {
+		LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+		return false;
+	}
+	return (has_clients || !FRAME_COMPARE_META_USED_NOTS(sink->mem, frame));;
+}
+
+int memsink_server_put(memsink_s *sink, const frame_s *frame) {
+	assert(sink->server);
+
+	const long double now = get_now_monotonic();
+
+	if (frame->used > MEMSINK_MAX_DATA) {
+		LOG_ERROR("%s-sink: Can't put frame: is too big (%zu > %zu)",
+			sink->name, frame->used, MEMSINK_MAX_DATA);
+		return 0; // -2
+	}
+
+	if (flock_timedwait_monotonic(sink->fd, 1) == 0) {
+		LOG_VERBOSE("%s-sink: >>>>> Exposing new frame ...", sink->name);
+
+		sink->last_id = get_now_id();
+		sink->mem->id = sink->last_id;
+
+		memcpy(sink->mem->data, frame->data, frame->used);
+		sink->mem->used = frame->used;
+		FRAME_COPY_META(frame, sink->mem);
+
+		sink->mem->magic = MEMSINK_MAGIC;
+		sink->mem->version = MEMSINK_VERSION;
+		atomic_store(&sink->has_clients, (sink->mem->last_client_ts + sink->client_ttl > get_now_monotonic()));
+
+		if (flock(sink->fd, LOCK_UN) < 0) {
+			LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+			return -1;
+		}
+		LOG_VERBOSE("%s-sink: Exposed new frame; full exposition time = %.3Lf",
+			sink->name, get_now_monotonic() - now);
+
+	} else if (errno == EWOULDBLOCK) {
+		LOG_VERBOSE("%s-sink: ===== Shared memory is busy now; frame skipped", sink->name);
+
+	} else {
+		LOG_PERROR("%s-sink: Can't lock memory", sink->name);
+		return -1;
+	}
+	return 0;
+}
+
+int memsink_client_get(memsink_s *sink, frame_s *frame) { // cppcheck-suppress unusedFunction
+	assert(!sink->server); // Client only
+
+	if (flock_timedwait_monotonic(sink->fd, sink->timeout) < 0) {
+		if (errno == EWOULDBLOCK) {
+			return -2;
+		}
+		LOG_PERROR("%s-sink: Can't lock memory", sink->name);
+		return -1;
+	}
+
+	int retval = -2; // Not updated
+	if (sink->mem->magic == MEMSINK_MAGIC) {
+		if (sink->mem->version != MEMSINK_VERSION) {
+			LOG_ERROR("%s-sink: Protocol version mismatch: sink=%u, required=%u",
+				sink->name, sink->mem->version, MEMSINK_VERSION);
+			retval = -1;
+			goto done;
+		}
+		if (sink->mem->id != sink->last_id) { // When updated
+			sink->last_id = sink->mem->id;
+			frame_set_data(frame, sink->mem->data, sink->mem->used);
+			FRAME_COPY_META(sink->mem, frame);
+			retval = 0;
+		}
+		sink->mem->last_client_ts = get_now_monotonic();
+	}
+
+	done:
+		if (flock(sink->fd, LOCK_UN) < 0) {
+			LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+			return -1;
+		}
+		return retval;
+}

src/libs/memsink.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,37 +22,47 @@
 
 #pragma once
 
+#include <stdint.h>
 #include <stdbool.h>
+#include <stdatomic.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <assert.h>
 
-#include <IL/OMX_Component.h>
-#include <interface/vcos/vcos_semaphore.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
 
-#include "../../device.h"
-
-#ifndef CFG_OMX_MAX_ENCODERS
-#	define CFG_OMX_MAX_ENCODERS 3 // Raspberry Pi limitation
-#endif
-#define OMX_MAX_ENCODERS ((unsigned)(CFG_OMX_MAX_ENCODERS))
+#include "tools.h"
+#include "logging.h"
+#include "frame.h"
+#include "memsinksh.h"
 
 
-struct omx_encoder_t {
-	OMX_HANDLETYPE			encoder;
-	OMX_BUFFERHEADERTYPE	*input_buffer;
-	OMX_BUFFERHEADERTYPE	*output_buffer;
-	bool					input_required;
-	bool					output_available;
-	bool					failed;
-	VCOS_SEMAPHORE_T		handler_sem;
+typedef struct {
+	const char	*name;
+	const char	*obj;
+	bool		server;
+	bool		rm;
+	unsigned	client_ttl; // Only for server
+	unsigned	timeout;
 
-	bool	i_handler_sem;
-	bool	i_encoder;
-	bool	i_input_port_enabled;
-	bool	i_output_port_enabled;
-};
+	int					fd;
+	memsink_shared_s	*mem;
+	uint64_t			last_id;
+	atomic_bool			has_clients; // Only for server
+} memsink_s;
 
 
-struct omx_encoder_t *omx_encoder_init(void);
-void omx_encoder_destroy(struct omx_encoder_t *omx);
+memsink_s *memsink_init(
+	const char *name, const char *obj, bool server,
+	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout);
 
-int omx_encoder_prepare(struct omx_encoder_t *omx, struct device_t *dev, unsigned quality);
-int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev, unsigned index);
+void memsink_destroy(memsink_s *sink);
+
+bool memsink_server_check(memsink_s *sink, const frame_s *frame);
+int memsink_server_put(memsink_s *sink, const frame_s *frame);
+
+int memsink_client_get(memsink_s *sink, frame_s *frame);

src/libs/memsinksh.h

@@ -0,0 +1,84 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <sys/types.h>
+#include <sys/mman.h>
+
+
+#define MEMSINK_MAGIC	((uint64_t)0xCAFEBABECAFEBABE)
+#define MEMSINK_VERSION	((uint32_t)2)
+
+#ifndef CFG_MEMSINK_MAX_DATA
+#	define CFG_MEMSINK_MAX_DATA 33554432
+#endif
+#define MEMSINK_MAX_DATA ((size_t)(CFG_MEMSINK_MAX_DATA))
+
+
+typedef struct {
+	uint64_t	magic;
+	uint32_t	version;
+
+	uint64_t	id;
+
+	size_t		used;
+	unsigned	width;
+	unsigned	height;
+	unsigned	format;
+	unsigned	stride;
+	bool		online;
+	bool		key;
+
+	long double	grab_ts;
+	long double	encode_begin_ts;
+	long double	encode_end_ts;
+
+	long double	last_client_ts;
+
+	uint8_t		data[MEMSINK_MAX_DATA];
+} memsink_shared_s;
+
+
+INLINE memsink_shared_s *memsink_shared_map(int fd) {
+	memsink_shared_s *mem = mmap(
+		NULL,
+		sizeof(memsink_shared_s),
+		PROT_READ | PROT_WRITE,
+		MAP_SHARED,
+		fd,
+		0
+	);
+	if (mem == MAP_FAILED) {
+		return NULL;
+	}
+	assert(mem != NULL);
+	return mem;
+}
+
+INLINE int memsink_shared_unmap(memsink_shared_s *mem) {
+	assert(mem != NULL);
+	return munmap(mem, sizeof(memsink_shared_s));
+}

src/libs/options.c

@@ -0,0 +1,39 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "options.h"
+
+
+void build_short_options(const struct option opts[], char *short_opts, size_t size) {
+	memset(short_opts, 0, size);
+    for (unsigned short_index = 0, opt_index = 0; opts[opt_index].name != NULL; ++opt_index) {
+		assert(short_index < size - 3);
+        if (isalpha(opts[opt_index].val)) {
+            short_opts[short_index] = opts[opt_index].val;
+            ++short_index;
+            if (opts[opt_index].has_arg == required_argument) {
+                short_opts[short_index] = ':';
+                ++short_index;
+            }
+        }
+    }
+}

src/libs/options.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,7 +22,12 @@
 
 #pragma once
 
-#include "../../device.h"
+#include <string.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <assert.h>
+
+#include <sys/types.h>
 
 
-void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned quality);
+void build_short_options(const struct option opts[], char *short_opts, size_t size);

src/libs/process.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -113,7 +113,7 @@ INLINE void process_set_name_prefix(int argc, char *argv[], const char *prefix)
 		size_t arg_len = strlen(argv[index]);
 		if (used + arg_len + 16 >= allocated) {
 			allocated += arg_len + 2048;
-			A_REALLOC(cmdline, allocated);
+			A_REALLOC(cmdline, allocated); // cppcheck-suppress memleakOnRealloc // False-positive (ok with assert)
 		}
 
 		strcat(cmdline, " ");
@@ -137,3 +137,11 @@ INLINE void process_notify_parent(void) {
 		LOG_PERROR("Can't send SIGUSR2 to the parent process %d", parent);
 	}
 }
+
+INLINE void process_suicide(void) {
+	pid_t pid = getpid();
+
+	if (kill(pid, SIGTERM) < 0) {
+		LOG_PERROR("Can't send SIGTERM to own pid %d", pid);
+	}
+}

src/libs/threading.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/libs/tools.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -23,25 +23,35 @@
 #pragma once
 
 #include <stdio.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <locale.h>
 #include <errno.h>
 #include <math.h>
 #include <time.h>
 #include <assert.h>
 
+#include <sys/file.h>
+
+
+#define RN "\r\n"
+
+#define INLINE inline __attribute__((always_inline))
+#define UNUSED __attribute__((unused))
 
 #define A_CALLOC(_dest, _nmemb)		assert((_dest = calloc(_nmemb, sizeof(*(_dest)))))
 #define A_REALLOC(_dest, _nmemb)	assert((_dest = realloc(_dest, _nmemb * sizeof(*(_dest)))))
 #define MEMSET_ZERO(_obj)			memset(&(_obj), 0, sizeof(_obj))
 
+#define A_ASPRINTF(_dest, _fmt, ...) assert(asprintf(&(_dest), _fmt, ##__VA_ARGS__) >= 0)
+
 #define ARRAY_LEN(_array) (sizeof(_array) / sizeof(_array[0]))
 
-#define INLINE inline __attribute__((always_inline))
-#define UNUSED __attribute__((unused))
 
-
-INLINE char *bool_to_string(bool flag) {
+INLINE const char *bool_to_string(bool flag) {
 	return (flag ? "true" : "false");
 }
 
@@ -61,12 +71,23 @@ INLINE long long floor_ms(long double now) {
 	return (long long)now - (now < (long long)now); // floor()
 }
 
-INLINE void get_now(clockid_t clk_id, time_t *sec, long *msec) {
-	struct timespec spec;
+INLINE uint32_t triple_u32(uint32_t x) {
+	// https://nullprogram.com/blog/2018/07/31/
+	x ^= x >> 17;
+	x *= UINT32_C(0xED5AD4BB);
+	x ^= x >> 11;
+	x *= UINT32_C(0xAC4C1B51);
+	x ^= x >> 15;
+	x *= UINT32_C(0x31848BAB);
+	x ^= x >> 14;
+	return x;
+}
 
-	assert(!clock_gettime(clk_id, &spec));
-	*sec = spec.tv_sec;
-	*msec = round(spec.tv_nsec / 1.0e6);
+INLINE void get_now(clockid_t clk_id, time_t *sec, long *msec) {
+	struct timespec ts;
+	assert(!clock_gettime(clk_id, &ts));
+	*sec = ts.tv_sec;
+	*msec = round(ts.tv_nsec / 1.0e6);
 
 	if (*msec > 999) {
 		*sec += 1;
@@ -74,24 +95,72 @@ INLINE void get_now(clockid_t clk_id, time_t *sec, long *msec) {
 	}
 }
 
+#if defined(CLOCK_MONOTONIC_RAW)
+#	define X_CLOCK_MONOTONIC CLOCK_MONOTONIC_RAW
+#elif defined(CLOCK_MONOTONIC_FAST)
+#	define X_CLOCK_MONOTONIC CLOCK_MONOTONIC_FAST
+#else
+#	define X_CLOCK_MONOTONIC CLOCK_MONOTONIC
+#endif
+
 INLINE long double get_now_monotonic(void) {
 	time_t sec;
 	long msec;
-
-#	if defined(CLOCK_MONOTONIC_RAW)
-	get_now(CLOCK_MONOTONIC_RAW, &sec, &msec);
-#	elif defined(CLOCK_MONOTONIC_FAST)
-	get_now(CLOCK_MONOTONIC_FAST, &sec, &msec);
-#	else
-	get_now(CLOCK_MONOTONIC, &sec, &msec);
-#	endif
+	get_now(X_CLOCK_MONOTONIC, &sec, &msec);
 	return (long double)sec + ((long double)msec) / 1000;
 }
 
+INLINE uint64_t get_now_monotonic_u64(void) {
+	struct timespec ts;
+	assert(!clock_gettime(X_CLOCK_MONOTONIC, &ts));
+	return (uint64_t)(ts.tv_nsec / 1000) + (uint64_t)ts.tv_sec * 1000000;
+}
+
+INLINE uint64_t get_now_id(void) {
+	uint64_t now = get_now_monotonic_u64();
+	return (uint64_t)triple_u32(now) | ((uint64_t)triple_u32(now + 12345) << 32);
+}
+
+#undef X_CLOCK_MONOTONIC
+
 INLINE long double get_now_real(void) {
 	time_t sec;
 	long msec;
-
 	get_now(CLOCK_REALTIME, &sec, &msec);
 	return (long double)sec + ((long double)msec) / 1000;
 }
+
+INLINE unsigned get_cores_available(void) {
+	long cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
+	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
+	return max_u(min_u(cores_sysconf, 4), 1);
+}
+
+INLINE int flock_timedwait_monotonic(int fd, long double timeout) {
+	long double deadline_ts = get_now_monotonic() + timeout;
+	int retval = -1;
+
+	while (true) {
+		retval = flock(fd, LOCK_EX | LOCK_NB);
+		if (retval == 0 || errno != EWOULDBLOCK || get_now_monotonic() > deadline_ts) {
+			break;
+		}
+		if (usleep(1000) < 0) {
+			break;
+		}
+	}
+	return retval;
+}
+
+INLINE char *errno_to_string(int error, char *buf, size_t size) {
+	assert(buf);
+	assert(size > 0);
+	locale_t locale = newlocale(LC_MESSAGES_MASK, "C", NULL);
+	char *str = "!!! newlocale() error !!!";
+	strncpy(buf, (locale ? strerror_l(error, locale) : str), size - 1);
+	buf[size - 1] = '\0';
+	if (locale) {
+		freelocale(locale);
+	}
+	return buf;
+}

src/libs/unjpeg.c

@@ -0,0 +1,92 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "unjpeg.h"
+
+
+typedef struct {
+	struct jpeg_error_mgr	mgr; // Default manager
+	jmp_buf					jmp;
+	const frame_s			*frame;
+} _jpeg_error_manager_s;
+
+
+static void _jpeg_error_handler(j_common_ptr jpeg);
+
+
+int unjpeg(const frame_s *src, frame_s *dest, bool decode) {
+	assert(is_jpeg(src->format));
+
+	volatile int retval = 0;
+
+	struct jpeg_decompress_struct jpeg;
+	jpeg_create_decompress(&jpeg);
+
+	// https://stackoverflow.com/questions/19857766/error-handling-in-libjpeg
+	_jpeg_error_manager_s jpeg_error;
+	jpeg.err = jpeg_std_error((struct jpeg_error_mgr *)&jpeg_error);
+	jpeg_error.mgr.error_exit = _jpeg_error_handler;
+	jpeg_error.frame = src;
+	if (setjmp(jpeg_error.jmp) < 0) {
+		retval = -1;
+		goto done;
+	}
+
+	jpeg_mem_src(&jpeg, src->data, src->used);
+	jpeg_read_header(&jpeg, TRUE);
+	jpeg.out_color_space = JCS_RGB;
+
+	jpeg_start_decompress(&jpeg);
+
+	frame_copy_meta(src, dest);
+	dest->format = V4L2_PIX_FMT_RGB24;
+	dest->width = jpeg.output_width;
+	dest->height = jpeg.output_height;
+	dest->stride = jpeg.output_width * jpeg.output_components; // Row stride
+	dest->used = 0;
+
+	if (decode) {
+		JSAMPARRAY scanlines;
+		scanlines = (*jpeg.mem->alloc_sarray)((j_common_ptr) &jpeg, JPOOL_IMAGE, dest->stride, 1);
+
+		frame_realloc_data(dest, ((dest->width * dest->height) << 1) * 2);
+		while (jpeg.output_scanline < jpeg.output_height) {
+			jpeg_read_scanlines(&jpeg, scanlines, 1);
+			frame_append_data(dest, scanlines[0], dest->stride);
+		}
+
+		jpeg_finish_decompress(&jpeg);
+	}
+
+	done:
+		jpeg_destroy_decompress(&jpeg);
+		return retval;
+}
+
+static void _jpeg_error_handler(j_common_ptr jpeg) {
+	_jpeg_error_manager_s *jpeg_error = (_jpeg_error_manager_s *)jpeg->err;
+	char msg[JMSG_LENGTH_MAX];
+
+	(*jpeg_error->mgr.format_message)(jpeg, msg);
+	LOG_ERROR("Can't decompress JPEG: %s", msg);
+	longjmp(jpeg_error->jmp, -1);
+}

src/libs/unjpeg.h

@@ -0,0 +1,40 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <setjmp.h>
+#include <assert.h>
+
+#include <sys/types.h>
+
+#include <jpeglib.h>
+#include <linux/videodev2.h>
+
+#include "logging.h"
+#include "frame.h"
+
+
+int unjpeg(const frame_s *src, frame_s *dest, bool decode);

src/options.c

@@ -1,691 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "options.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <strings.h>
-#include <ctype.h>
-#include <limits.h>
-#include <getopt.h>
-#include <errno.h>
-#include <assert.h>
-
-#include "config.h"
-#include "logging.h"
-#include "process.h"
-#include "device.h"
-#include "encoder.h"
-#include "http/server.h"
-#ifdef WITH_GPIO
-#	include "gpio/gpio.h"
-#endif
-
-
-enum _OPT_VALUES {
-	_O_DEVICE = 'd',
-	_O_INPUT = 'i',
-	_O_RESOLUTION = 'r',
-	_O_FORMAT = 'm',
-	_O_TV_STANDARD = 'a',
-	_O_IO_METHOD = 'I',
-	_O_DESIRED_FPS = 'f',
-	_O_MIN_FRAME_SIZE = 'z',
-	_O_PERSISTENT = 'n',
-	_O_DV_TIMINGS = 't',
-	_O_BUFFERS = 'b',
-	_O_WORKERS = 'w',
-	_O_QUALITY = 'q',
-	_O_ENCODER = 'c',
-#ifdef WITH_OMX
-	_O_GLITCHED_RESOLUTIONS = 'g',
-#endif
-
-	_O_HOST = 's',
-	_O_PORT = 'p',
-	_O_UNIX = 'U',
-	_O_UNIX_RM = 'D',
-	_O_UNIX_MODE = 'M',
-	_O_BLANK = 'k',
-	_O_LAST_AS_BLANK = 'K',
-	_O_DROP_SAME_FRAMES = 'e',
-	_O_SLOWDOWN = 'l',
-	_O_FAKE_RESOLUTION = 'R',
-
-	_O_HELP = 'h',
-	_O_VERSION = 'v',
-
-	// Longs only
-
-	_O_DEVICE_TIMEOUT = 10000,
-	_O_DEVICE_ERROR_DELAY,
-
-	_O_IMAGE_DEFAULT,
-	_O_BRIGHTNESS,
-	_O_CONTRAST,
-	_O_SATURATION,
-	_O_HUE,
-	_O_GAMMA,
-	_O_SHARPNESS,
-	_O_BACKLIGHT_COMPENSATION,
-	_O_WHITE_BALANCE,
-	_O_GAIN,
-	_O_COLOR_EFFECT,
-	_O_FLIP_VERTICAL,
-	_O_FLIP_HORIZONTAL,
-
-	_O_USER,
-	_O_PASSWD,
-	_O_STATIC,
-	_O_ALLOW_ORIGIN,
-	_O_TCP_NODELAY,
-	_O_SERVER_TIMEOUT,
-
-#ifdef WITH_GPIO
-	_O_GPIO_DEVICE,
-	_O_GPIO_CONSUMER_PREFIX,
-	_O_GPIO_PROG_RUNNING,
-	_O_GPIO_STREAM_ONLINE,
-	_O_GPIO_HAS_HTTP_CLIENTS,
-#endif
-
-#ifdef HAS_PDEATHSIG
-	_O_EXIT_ON_PARENT_DEATH,
-#endif
-#ifdef WITH_SETPROCTITLE
-	_O_PROCESS_NAME_PREFIX,
-#endif
-	_O_NOTIFY_PARENT,
-
-	_O_LOG_LEVEL,
-	_O_PERF,
-	_O_VERBOSE,
-	_O_DEBUG,
-	_O_FORCE_LOG_COLORS,
-	_O_NO_LOG_COLORS,
-
-	_O_FEATURES,
-};
-
-static const struct option _LONG_OPTS[] = {
-	{"device",					required_argument,	NULL,	_O_DEVICE},
-	{"input",					required_argument,	NULL,	_O_INPUT},
-	{"resolution",				required_argument,	NULL,	_O_RESOLUTION},
-	{"format",					required_argument,	NULL,	_O_FORMAT},
-	{"tv-standard",				required_argument,	NULL,	_O_TV_STANDARD},
-	{"io-method",				required_argument,	NULL,	_O_IO_METHOD},
-	{"desired-fps",				required_argument,	NULL,	_O_DESIRED_FPS},
-	{"min-frame-size",			required_argument,	NULL,	_O_MIN_FRAME_SIZE},
-	{"persistent",				no_argument,		NULL,	_O_PERSISTENT},
-	{"dv-timings",				no_argument,		NULL,	_O_DV_TIMINGS},
-	{"buffers",					required_argument,	NULL,	_O_BUFFERS},
-	{"workers",					required_argument,	NULL,	_O_WORKERS},
-	{"quality",					required_argument,	NULL,	_O_QUALITY},
-	{"encoder",					required_argument,	NULL,	_O_ENCODER},
-#	ifdef WITH_OMX
-	{"glitched-resolutions",	required_argument,	NULL,	_O_GLITCHED_RESOLUTIONS},
-#	endif
-	{"device-timeout",			required_argument,	NULL,	_O_DEVICE_TIMEOUT},
-	{"device-error-delay",		required_argument,	NULL,	_O_DEVICE_ERROR_DELAY},
-
-	{"image-default",			no_argument,		NULL,	_O_IMAGE_DEFAULT},
-	{"brightness",				required_argument,	NULL,	_O_BRIGHTNESS},
-	{"contrast",				required_argument,	NULL,	_O_CONTRAST},
-	{"saturation",				required_argument,	NULL,	_O_SATURATION},
-	{"hue",						required_argument,	NULL,	_O_HUE},
-	{"gamma",					required_argument,	NULL,	_O_GAMMA},
-	{"sharpness",				required_argument,	NULL,	_O_SHARPNESS},
-	{"backlight-compensation",	required_argument,	NULL,	_O_BACKLIGHT_COMPENSATION},
-	{"white-balance",			required_argument,	NULL,	_O_WHITE_BALANCE},
-	{"gain",					required_argument,	NULL,	_O_GAIN},
-	{"color-effect",			required_argument,	NULL,	_O_COLOR_EFFECT},
-	{"flip-vertical",			required_argument,	NULL,	_O_FLIP_VERTICAL},
-	{"flip-horizontal",			required_argument,	NULL,	_O_FLIP_HORIZONTAL},
-
-	{"host",					required_argument,	NULL,	_O_HOST},
-	{"port",					required_argument,	NULL,	_O_PORT},
-	{"unix",					required_argument,	NULL,	_O_UNIX},
-	{"unix-rm",					no_argument,		NULL,	_O_UNIX_RM},
-	{"unix-mode",				required_argument,	NULL,	_O_UNIX_MODE},
-	{"user",					required_argument,	NULL,	_O_USER},
-	{"passwd",					required_argument,	NULL,	_O_PASSWD},
-	{"static",					required_argument,	NULL,	_O_STATIC},
-	{"blank",					required_argument,	NULL,	_O_BLANK},
-	{"last-as-blank",			required_argument,	NULL,	_O_LAST_AS_BLANK},
-	{"drop-same-frames",		required_argument,	NULL,	_O_DROP_SAME_FRAMES},
-	{"slowdown",				no_argument,		NULL,	_O_SLOWDOWN},
-	{"allow-origin",			required_argument,	NULL,	_O_ALLOW_ORIGIN},
-	{"fake-resolution",			required_argument,	NULL,	_O_FAKE_RESOLUTION},
-	{"tcp-nodelay",				no_argument,		NULL,	_O_TCP_NODELAY},
-	{"server-timeout",			required_argument,	NULL,	_O_SERVER_TIMEOUT},
-
-#ifdef WITH_GPIO
-	{"gpio-device",				required_argument,	NULL,	_O_GPIO_DEVICE},
-	{"gpio-consumer-prefix",	required_argument,	NULL,	_O_GPIO_CONSUMER_PREFIX},
-	{"gpio-prog-running",		required_argument,	NULL,	_O_GPIO_PROG_RUNNING},
-	{"gpio-stream-online",		required_argument,	NULL,	_O_GPIO_STREAM_ONLINE},
-	{"gpio-has-http-clients",	required_argument,	NULL,	_O_GPIO_HAS_HTTP_CLIENTS},
-#endif
-
-#ifdef HAS_PDEATHSIG
-	{"exit-on-parent-death",	no_argument,		NULL,	_O_EXIT_ON_PARENT_DEATH},
-#endif
-#ifdef WITH_SETPROCTITLE
-	{"process-name-prefix",		required_argument,	NULL,	_O_PROCESS_NAME_PREFIX},
-#endif
-	{"notify-parent",			no_argument,		NULL,	_O_NOTIFY_PARENT},
-
-	{"log-level",				required_argument,	NULL,	_O_LOG_LEVEL},
-	{"perf",					no_argument,		NULL,	_O_PERF},
-	{"verbose",					no_argument,		NULL,	_O_VERBOSE},
-	{"debug",					no_argument,		NULL,	_O_DEBUG},
-	{"force-log-colors",		no_argument,		NULL,	_O_FORCE_LOG_COLORS},
-	{"no-log-colors",			no_argument,		NULL,	_O_NO_LOG_COLORS},
-
-	{"help",					no_argument,		NULL,	_O_HELP},
-	{"version",					no_argument,		NULL,	_O_VERSION},
-	{"features",				no_argument,		NULL,	_O_FEATURES},
-
-	{NULL, 0, NULL, 0},
-};
-
-
-static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited);
-#ifdef WITH_OMX
-static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder);
-#endif
-
-static void _features(void);
-static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server);
-
-
-struct options_t *options_init(int argc, char *argv[]) {
-	struct options_t *options;
-
-	A_CALLOC(options, 1);
-	options->argc = argc;
-	options->argv = argv;
-
-	A_CALLOC(options->argv_copy, argc);
-	for (int index = 0; index < argc; ++index) {
-		assert(options->argv_copy[index] = strdup(argv[index]));
-	}
-
-	return options;
-}
-
-void options_destroy(struct options_t *options) {
-	for (int index = 0; index < options->argc; ++index) {
-		free(options->argv_copy[index]);
-	}
-	free(options->argv_copy);
-	free(options);
-}
-
-
-int options_parse(struct options_t *options, struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
-#	define OPT_SET(_dest, _value) { \
-			_dest = _value; \
-			break; \
-		}
-
-#	define OPT_NUMBER(_name, _dest, _min, _max, _base) { \
-			errno = 0; char *_end = NULL; long long _tmp = strtoll(optarg, &_end, _base); \
-			if (errno || *_end || _tmp < _min || _tmp > _max) { \
-				printf("Invalid value for '%s=%s': min=%lld, max=%lld\n", _name, optarg, (long long)_min, (long long)_max); \
-				return -1; \
-			} \
-			_dest = _tmp; \
-			break; \
-		}
-
-#	define OPT_RESOLUTION(_name, _dest_width, _dest_height, _limited) { \
-			switch (_parse_resolution(optarg, &_dest_width, &_dest_height, _limited)) { \
-				case -1: \
-					printf("Invalid resolution format for '%s=%s'\n", _name, optarg); \
-					return -1; \
-				case -2: \
-					printf("Invalid width of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH); \
-					return -1; \
-				case -3: \
-					printf("Invalid height of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_HEIGHT, VIDEO_MAX_HEIGHT); \
-					return -1; \
-				case 0: break; \
-				default: assert(0 && "Unknown error"); \
-			} \
-			break; \
-		}
-
-#	define OPT_PARSE(_name, _dest, _func, _invalid, _available) { \
-			if ((_dest = _func(optarg)) == _invalid) { \
-				printf("Unknown " _name ": %s; available: %s\n", optarg, _available); \
-				return -1; \
-			} \
-			break; \
-		}
-
-#	define OPT_CTL_DEFAULT_NOBREAK(_dest) { \
-			dev->ctl._dest.mode = CTL_MODE_DEFAULT; \
-		}
-
-#	define OPT_CTL_MANUAL(_dest) { \
-			if (!strcasecmp(optarg, "default")) { \
-				OPT_CTL_DEFAULT_NOBREAK(_dest); \
-			} else { \
-				dev->ctl._dest.mode = CTL_MODE_VALUE; \
-				OPT_NUMBER("--"#_dest, dev->ctl._dest.value, INT_MIN, INT_MAX, 0); \
-			} \
-			break; \
-		}
-
-#	define OPT_CTL_AUTO(_dest) { \
-			if (!strcasecmp(optarg, "default")) { \
-				OPT_CTL_DEFAULT_NOBREAK(_dest); \
-			} else if (!strcasecmp(optarg, "auto")) { \
-				dev->ctl._dest.mode = CTL_MODE_AUTO; \
-			} else { \
-				dev->ctl._dest.mode = CTL_MODE_VALUE; \
-				OPT_NUMBER("--"#_dest, dev->ctl._dest.value, INT_MIN, INT_MAX, 0); \
-			} \
-			break; \
-		}
-
-	int ch;
-	int short_index;
-	int opt_index;
-	char short_opts[1024] = {0};
-#	ifdef WITH_SETPROCTITLE
-	char *process_name_prefix = NULL;
-#	endif
-
-	for (short_index = 0, opt_index = 0; _LONG_OPTS[opt_index].name != NULL; ++opt_index) {
-		if (isalpha(_LONG_OPTS[opt_index].val)) {
-			short_opts[short_index] = _LONG_OPTS[opt_index].val;
-			++short_index;
-			if (_LONG_OPTS[opt_index].has_arg == required_argument) {
-				short_opts[short_index] = ':';
-				++short_index;
-			}
-		}
-	}
-
-	while ((ch = getopt_long(options->argc, options->argv_copy, short_opts, _LONG_OPTS, NULL)) >= 0) {
-		switch (ch) {
-			case _O_DEVICE:			OPT_SET(dev->path, optarg);
-			case _O_INPUT:			OPT_NUMBER("--input", dev->input, 0, 128, 0);
-			case _O_RESOLUTION:		OPT_RESOLUTION("--resolution", dev->width, dev->height, true);
-#			pragma GCC diagnostic ignored "-Wsign-compare"
-#			pragma GCC diagnostic push
-			case _O_FORMAT:			OPT_PARSE("pixel format", dev->format, device_parse_format, FORMAT_UNKNOWN, FORMATS_STR);
-#			pragma GCC diagnostic pop
-			case _O_TV_STANDARD:	OPT_PARSE("TV standard", dev->standard, device_parse_standard, STANDARD_UNKNOWN, STANDARDS_STR);
-			case _O_IO_METHOD:		OPT_PARSE("IO method", dev->io_method, device_parse_io_method, IO_METHOD_UNKNOWN, IO_METHODS_STR);
-			case _O_DESIRED_FPS:	OPT_NUMBER("--desired-fps", dev->desired_fps, 0, VIDEO_MAX_FPS, 0);
-			case _O_MIN_FRAME_SIZE:	OPT_NUMBER("--min-frame-size", dev->min_frame_size, 1, 8192, 0);
-			case _O_PERSISTENT:		OPT_SET(dev->persistent, true);
-			case _O_DV_TIMINGS:		OPT_SET(dev->dv_timings, true);
-			case _O_BUFFERS:		OPT_NUMBER("--buffers", dev->n_buffers, 1, 32, 0);
-			case _O_WORKERS:		OPT_NUMBER("--workers", dev->n_workers, 1, 32, 0);
-			case _O_QUALITY:		OPT_NUMBER("--quality", encoder->quality, 1, 100, 0);
-			case _O_ENCODER:		OPT_PARSE("encoder type", encoder->type, encoder_parse_type, ENCODER_TYPE_UNKNOWN, ENCODER_TYPES_STR);
-#			ifdef WITH_OMX
-			case _O_GLITCHED_RESOLUTIONS:
-				if (_parse_glitched_resolutions(optarg, encoder) < 0) {
-					return -1;
-				}
-				break;
-#			endif
-			case _O_DEVICE_TIMEOUT:		OPT_NUMBER("--device-timeout", dev->timeout, 1, 60, 0);
-			case _O_DEVICE_ERROR_DELAY:	OPT_NUMBER("--device-error-delay", dev->error_delay, 1, 60, 0);
-
-			case _O_IMAGE_DEFAULT:
-				OPT_CTL_DEFAULT_NOBREAK(brightness);
-				OPT_CTL_DEFAULT_NOBREAK(contrast);
-				OPT_CTL_DEFAULT_NOBREAK(saturation);
-				OPT_CTL_DEFAULT_NOBREAK(hue);
-				OPT_CTL_DEFAULT_NOBREAK(gamma);
-				OPT_CTL_DEFAULT_NOBREAK(sharpness);
-				OPT_CTL_DEFAULT_NOBREAK(backlight_compensation);
-				OPT_CTL_DEFAULT_NOBREAK(white_balance);
-				OPT_CTL_DEFAULT_NOBREAK(gain);
-				OPT_CTL_DEFAULT_NOBREAK(color_effect);
-				OPT_CTL_DEFAULT_NOBREAK(flip_vertical);
-				OPT_CTL_DEFAULT_NOBREAK(flip_horizontal);
-				break;
-			case _O_BRIGHTNESS:				OPT_CTL_AUTO(brightness);
-			case _O_CONTRAST:				OPT_CTL_MANUAL(contrast);
-			case _O_SATURATION:				OPT_CTL_MANUAL(saturation);
-			case _O_HUE:					OPT_CTL_AUTO(hue);
-			case _O_GAMMA:					OPT_CTL_MANUAL(gamma);
-			case _O_SHARPNESS:				OPT_CTL_MANUAL(sharpness);
-			case _O_BACKLIGHT_COMPENSATION:	OPT_CTL_MANUAL(backlight_compensation);
-			case _O_WHITE_BALANCE:			OPT_CTL_AUTO(white_balance);
-			case _O_GAIN:					OPT_CTL_AUTO(gain);
-			case _O_COLOR_EFFECT:			OPT_CTL_MANUAL(color_effect);
-			case _O_FLIP_VERTICAL:			OPT_CTL_MANUAL(flip_vertical);
-			case _O_FLIP_HORIZONTAL:		OPT_CTL_MANUAL(flip_horizontal);
-
-			case _O_HOST:				OPT_SET(server->host, optarg);
-			case _O_PORT:				OPT_NUMBER("--port", server->port, 1, 65535, 0);
-			case _O_UNIX:				OPT_SET(server->unix_path, optarg);
-			case _O_UNIX_RM:			OPT_SET(server->unix_rm, true);
-			case _O_UNIX_MODE:			OPT_NUMBER("--unix-mode", server->unix_mode, INT_MIN, INT_MAX, 8);
-			case _O_USER:				OPT_SET(server->user, optarg);
-			case _O_PASSWD:				OPT_SET(server->passwd, optarg);
-			case _O_STATIC:				OPT_SET(server->static_path, optarg);
-			case _O_BLANK:				OPT_SET(server->blank_path, optarg);
-			case _O_LAST_AS_BLANK:		OPT_NUMBER("--last-as-blank", server->last_as_blank, 0, 86400, 0);
-			case _O_DROP_SAME_FRAMES:	OPT_NUMBER("--drop-same-frames", server->drop_same_frames, 0, VIDEO_MAX_FPS, 0);
-			case _O_SLOWDOWN:			OPT_SET(server->slowdown, true);
-			case _O_FAKE_RESOLUTION:	OPT_RESOLUTION("--fake-resolution", server->fake_width, server->fake_height, false);
-			case _O_ALLOW_ORIGIN:		OPT_SET(server->allow_origin, optarg);
-			case _O_TCP_NODELAY:		OPT_SET(server->tcp_nodelay, true);
-			case _O_SERVER_TIMEOUT:		OPT_NUMBER("--server-timeout", server->timeout, 1, 60, 0);
-
-#			ifdef WITH_GPIO
-			case _O_GPIO_DEVICE:			OPT_SET(gpio.path, optarg);
-			case _O_GPIO_CONSUMER_PREFIX:	OPT_SET(gpio.consumer_prefix, optarg);
-			case _O_GPIO_PROG_RUNNING:		OPT_NUMBER("--gpio-prog-running", gpio.prog_running.pin, 0, 256, 0);
-			case _O_GPIO_STREAM_ONLINE:		OPT_NUMBER("--gpio-stream-online", gpio.stream_online.pin, 0, 256, 0);
-			case _O_GPIO_HAS_HTTP_CLIENTS:	OPT_NUMBER("--gpio-has-http-clients", gpio.has_http_clients.pin, 0, 256, 0);
-#			endif
-
-#			ifdef HAS_PDEATHSIG
-			case _O_EXIT_ON_PARENT_DEATH:
-				if (process_track_parent_death() < 0) {
-					return -1;
-				};
-				break;
-#			endif
-#			ifdef WITH_SETPROCTITLE
-			case _O_PROCESS_NAME_PREFIX:	OPT_SET(process_name_prefix, optarg);
-#			endif
-			case _O_NOTIFY_PARENT:			OPT_SET(server->notify_parent, true);
-
-			case _O_LOG_LEVEL:			OPT_NUMBER("--log-level", log_level, LOG_LEVEL_INFO, LOG_LEVEL_DEBUG, 0);
-			case _O_PERF:				OPT_SET(log_level, LOG_LEVEL_PERF);
-			case _O_VERBOSE:			OPT_SET(log_level, LOG_LEVEL_VERBOSE);
-			case _O_DEBUG:				OPT_SET(log_level, LOG_LEVEL_DEBUG);
-			case _O_FORCE_LOG_COLORS:	OPT_SET(log_colored, true);
-			case _O_NO_LOG_COLORS:		OPT_SET(log_colored, false);
-
-			case _O_HELP:		_help(dev, encoder, server); return 1;
-			case _O_VERSION:	puts(VERSION); return 1;
-			case _O_FEATURES:	_features(); return 1;
-
-			case 0:		break;
-			default:	_help(dev, encoder, server); return -1;
-		}
-	}
-
-#	ifdef WITH_SETPROCTITLE
-	if (process_name_prefix != NULL) {
-		process_set_name_prefix(options->argc, options->argv, process_name_prefix);
-	}
-#	endif
-
-#	undef OPT_CTL_AUTO
-#	undef OPT_CTL_MANUAL
-#	undef OPT_CTL_DEFAULT_NOBREAK
-#	undef OPT_PARSE
-#	undef OPT_RESOLUTION
-#	undef OPT_NUMBER
-#	undef OPT_SET
-	return 0;
-}
-
-static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited) {
-	unsigned tmp_width;
-	unsigned tmp_height;
-
-	if (sscanf(str, "%ux%u", &tmp_width, &tmp_height) != 2) {
-		return -1;
-	}
-	if (limited) {
-		if (tmp_width < VIDEO_MIN_WIDTH || tmp_width > VIDEO_MAX_WIDTH) {
-			return -2;
-		}
-		if (tmp_height < VIDEO_MIN_HEIGHT || tmp_height > VIDEO_MAX_HEIGHT) {
-			return -3;
-		}
-	}
-	*width = tmp_width;
-	*height = tmp_height;
-	return 0;
-}
-
-#ifdef WITH_OMX
-static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder) {
-	char *str_copy;
-	char *ptr;
-	unsigned count = 0;
-	unsigned width;
-	unsigned height;
-
-	assert((str_copy = strdup(str)) != NULL);
-
-	ptr = strtok(str_copy, ",;:\n\t ");
-	while (ptr != NULL) {
-		if (count >= MAX_GLITCHED_RESOLUTIONS) {
-			printf("Too big '--glitched-resolutions' list: maxlen=%u\n", MAX_GLITCHED_RESOLUTIONS);
-			goto error;
-		}
-
-		switch (_parse_resolution(ptr, &width, &height, true)) {
-			case -1:
-				printf("Invalid resolution format of '%s' in '--glitched-resolutions=%s\n", ptr, str_copy);
-				goto error;
-			case -2:
-				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
-					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
-				goto error;
-			case -3:
-				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
-					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
-				goto error;
-			case 0: break;
-			default: assert(0 && "Unknown error");
-		}
-
-		encoder->glitched_resolutions[count][0] = width;
-		encoder->glitched_resolutions[count][1] = height;
-		count += 1;
-
-		ptr = strtok(NULL, ",;:\n\t ");
-	}
-
-	encoder->n_glitched_resolutions = count;
-	free(str_copy);
-	return 0;
-
-	error:
-		free(str_copy);
-		return -1;
-}
-#endif
-
-static void _features(void) {
-#	ifdef WITH_OMX
-	puts("+ WITH_OMX");
-#	else
-	puts("- WITH_OMX");
-#	endif
-
-#	ifdef WITH_GPIO
-	puts("+ WITH_GPIO");
-#	else
-	puts("- WITH_GPIO");
-#	endif
-
-#	ifdef WITH_PTHREAD_NP
-	puts("+ WITH_PTHREAD_NP");
-#	else
-	puts("- WITH_PTHREAD_NP");
-#	endif
-
-#	ifdef WITH_SETPROCTITLE
-	puts("+ WITH_SETPROCTITLE");
-#	else
-	puts("- WITH_SETPROCTITLE");
-#	endif
-
-#	ifdef HAS_PDEATHSIG
-	puts("+ HAS_PDEATHSIG");
-#	else
-	puts("- HAS_PDEATHSIG");
-#	endif
-}
-
-static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
-	printf("\nuStreamer - Lightweight and fast MJPG-HTTP streamer\n");
-	printf("═══════════════════════════════════════════════════\n\n");
-	printf("Version: %s; license: GPLv3\n", VERSION);
-	printf("Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com>\n\n");
-	printf("Capturing options:\n");
-	printf("══════════════════\n");
-	printf("    -d|--device </dev/path>  ───────────── Path to V4L2 device. Default: %s.\n\n", dev->path);
-	printf("    -i|--input <N>  ────────────────────── Input channel. Default: %u.\n\n", dev->input);
-	printf("    -r|--resolution <WxH>  ─────────────── Initial image resolution. Default: %ux%u.\n\n", dev->width, dev->height);
-	printf("    -m|--format <fmt>  ─────────────────── Image format.\n");
-	printf("                                           Available: %s; default: YUYV.\n\n", FORMATS_STR);
-	printf("    -a|--tv-standard <std>  ────────────── Force TV standard.\n");
-	printf("                                           Available: %s; default: disabled.\n\n", STANDARDS_STR);
-	printf("    -I|--io-method <method>  ───────────── Set V4L2 IO method (see kernel documentation).\n");
-	printf("                                           Changing of this parameter may increase the performance. Or not.\n");
-	printf("                                           Available: %s; default: MMAP\n\n", IO_METHODS_STR);
-	printf("    -f|--desired-fps <N>  ──────────────── Desired FPS. Default: maximum possible.\n\n");
-	printf("    -z|--min-frame-size <N>  ───────────── Drop frames smaller then this limit. Useful if the device\n");
-	printf("                                           produces small-sized garbage frames. Default: %zu bytes.\n\n", dev->min_frame_size);
-	printf("    -n|--persistent  ───────────────────── Don't re-initialize device on timeout. Default: disabled.\n\n");
-	printf("    -t|--dv-timings  ───────────────────── Enable DV timings querying and events processing\n");
-	printf("                                           to automatic resolution change. Default: disabled.\n\n");
-	printf("    -b|--buffers <N>  ──────────────────── The number of buffers to receive data from the device.\n");
-	printf("                                           Each buffer may processed using an independent thread.\n");
-	printf("                                           Default: %u (the number of CPU cores (but not more than 4) + 1).\n\n", dev->n_buffers);
-	printf("    -w|--workers <N>  ──────────────────── The number of worker threads but not more than buffers.\n");
-	printf("                                           Default: %u (the number of CPU cores (but not more than 4)).\n\n", dev->n_workers);
-	printf("    -q|--quality <N>  ──────────────────── Set quality of JPEG encoding from 1 to 100 (best). Default: %u.\n", encoder->quality);
-	printf("                                           Note: If HW encoding is used (JPEG source format selected),\n");
-	printf("                                           this parameter attempts to configure the camera\n");
-	printf("                                           or capture device hardware's internal encoder.\n");
-	printf("                                           It does not re-encode MJPG to MJPG to change the quality level\n");
-	printf("                                           for sources that already output MJPG.\n\n");
-	printf("    -c|--encoder <type>  ───────────────── Use specified encoder. It may affect the number of workers.\n");
-	printf("                                           Available:\n");
-	printf("                                             * CPU  ─ Software MJPG encoding (default);\n");
-#	ifdef WITH_OMX
-	printf("                                             * OMX  ─ GPU hardware accelerated MJPG encoding with OpenMax;\n");
-#	endif
-	printf("                                             * HW  ── Use pre-encoded MJPG frames directly from camera hardware.\n\n");
-#	ifdef WITH_OMX
-	printf("    -g|--glitched-resolutions <WxH,...>  ─ Comma-separated list of resolutions that require forced\n");
-	printf("                                           encoding on CPU instead of OMX. Default: disabled.\n\n");
-#	endif
-	printf("    --device-timeout <sec>  ────────────── Timeout for device querying. Default: %u.\n\n", dev->timeout);
-	printf("    --device-error-delay <sec>  ────────── Delay before trying to connect to the device again\n");
-	printf("                                           after an error (timeout for example). Default: %u.\n\n", dev->error_delay);
-	printf("Image control options:\n");
-	printf("══════════════════════\n");
-	printf("    --image-default  ────────────────────── Reset all image settings bellow to default. Default: no change.\n\n");
-	printf("    --brightness <N|auto|default>  ──────── Set brightness. Default: no change.\n\n");
-	printf("    --contrast <N|default>  ─────────────── Set contrast. Default: no change.\n\n");
-	printf("    --saturation <N|default>  ───────────── Set saturation. Default: no change.\n\n");
-	printf("    --hue <N|auto|default>  ─────────────── Set hue. Default: no change.\n\n");
-	printf("    --gamma <N|default> ─────────────────── Set gamma. Default: no change.\n\n");
-	printf("    --sharpness <N|default>  ────────────── Set sharpness. Default: no change.\n\n");
-	printf("    --backlight-compensation <N|default>  ─ Set backlight compensation. Default: no change.\n\n");
-	printf("    --white-balance <N|auto|default>  ───── Set white balance. Default: no change.\n\n");
-	printf("    --gain <N|auto|default>  ────────────── Set gain. Default: no change.\n\n");
-	printf("    --color-effect <N|default>  ─────────── Set color effect. Default: no change.\n\n");
-	printf("    --flip-vertical <1|0|default>  ──────── Set vertical flip. Default: no change.\n\n");
-	printf("    --flip-horizontal <1|0|default>  ────── Set horizontal flip. Default: no change.\n\n");
-	printf("    Hint: use v4l2-ctl --list-ctrls-menus to query available controls of the device.\n\n");
-	printf("HTTP server options:\n");
-	printf("════════════════════\n");
-	printf("    -s|--host <address>  ──────── Listen on Hostname or IP. Default: %s.\n\n", server->host);
-	printf("    -p|--port <N>  ────────────── Bind to this TCP port. Default: %u.\n\n", server->port);
-	printf("    -U|--unix <path>  ─────────── Bind to UNIX domain socket. Default: disabled.\n\n");
-	printf("    -D|--unix-rm  ─────────────── Try to remove old UNIX socket file before binding. Default: disabled.\n\n");
-	printf("    -M|--unix-mode <mode>  ────── Set UNIX socket file permissions (like 777). Default: disabled.\n\n");
-	printf("    --user <name>  ────────────── HTTP basic auth user. Default: disabled.\n\n");
-	printf("    --passwd <str>  ───────────── HTTP basic auth passwd. Default: empty.\n\n");
-	printf("    --static <path> ───────────── Path to dir with static files instead of embedded root index page.\n");
-	printf("                                  Symlinks are not supported for security reasons. Default: disabled.\n\n");
-	printf("    -k|--blank <path>  ────────── Path to JPEG file that will be shown when the device is disconnected\n");
-	printf("                                  during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.\n\n");
-	printf("    -K|--last-as-blank <sec>  ─── Show the last frame received from the camera after it was disconnected,\n");
-	printf("                                  but no more than specified time (or endlessly if 0 is specified).\n");
-	printf("                                  If the device has not yet been online, display 'NO SIGNAL' or the image\n");
-	printf("                                  specified by option --blank. Default: disabled.\n\n");
-	printf("    -e|--drop-same-frames <N>  ── Don't send identical frames to clients, but no more than specified number.\n");
-	printf("                                  It can significantly reduce the outgoing traffic, but will increase\n");
-	printf("                                  the CPU loading. Don't use this option with analog signal sources\n");
-	printf("                                  or webcams, it's useless. Default: disabled.\n\n");
-	printf("    -l|--slowdown  ────────────── Slowdown capturing to 1 FPS or less when no stream clients are connected.\n");
-	printf("                                  Useful to reduce CPU consumption. Default: disabled.\n\n");
-	printf("    -R|--fake-resolution <WxH>  ─ Override image resolution for the /state. Default: disabled.\n\n");
-	printf("    --tcp-nodelay  ────────────── Set TCP_NODELAY flag to the client /stream socket. Ignored for --unix.\n");
-	printf("                                  Default: disabled.\n\n");
-	printf("    --allow-origin <str>  ─────── Set Access-Control-Allow-Origin header. Default: disabled.\n\n");
-	printf("    --server-timeout <sec>  ───── Timeout for client connections. Default: %u.\n\n", server->timeout);
-#ifdef WITH_GPIO
-	printf("GPIO options:\n");
-	printf("═════════════\n");
-	printf("    --gpio-device </dev/path>  ───── Path to GPIO character device. Default: %s.\n\n", gpio.path);
-	printf("    --gpio-consumer-prefix <str>  ── Consumer prefix for GPIO outputs. Default: %s.\n\n", gpio.consumer_prefix);
-	printf("    --gpio-prog-running <pin>  ───── Set 1 on GPIO pin while uStreamer is running. Default: disabled.\n\n");
-	printf("    --gpio-stream-online <pin>  ──── Set 1 while streaming. Default: disabled\n\n");
-	printf("    --gpio-has-http-clients <pin>  ─ Set 1 while stream has at least one client. Default: disabled.\n\n");
-#endif
-#if (defined(HAS_PDEATHSIG) || defined(WITH_SETPROCTITLE))
-	printf("Process options:\n");
-	printf("════════════════\n");
-#endif
-#ifdef HAS_PDEATHSIG
-	printf("    --exit-on-parent-death  ─────── Exit the program if the parent process is dead. Default: disabled.\n\n");
-#endif
-#ifdef WITH_SETPROCTITLE
-	printf("    --process-name-prefix <str>  ── Set process name prefix which will be displayed in the process list\n");
-	printf("                                    like '<str>: ustreamer --blah-blah-blah'. Default: disabled.\n\n");
-	printf("    --notify-parent  ────────────── Send SIGUSR2 to the parent process when the stream parameters are changed.\n");
-	printf("                                    Checking changes is performed for the online flag and image resolution.\n\n");
-#endif
-	printf("Logging options:\n");
-	printf("════════════════\n");
-	printf("    --log-level <N>  ──── Verbosity level of messages from 0 (info) to 3 (debug).\n");
-	printf("                          Enabling debugging messages can slow down the program.\n");
-	printf("                          Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).\n");
-	printf("                          Default: %d.\n\n", log_level);
-	printf("    --perf  ───────────── Enable performance messages (same as --log-level=1). Default: disabled.\n\n");
-	printf("    --verbose  ────────── Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n\n");
-	printf("    --debug  ──────────── Enable debug messages and lower (same as --log-level=3). Default: disabled.\n\n");
-	printf("    --force-log-colors  ─ Force color logging. Default: colored if stdout is a TTY.\n\n");
-	printf("    --no-log-colors  ──── Disable color logging. Default: ditto.\n\n");
-	printf("Help options:\n");
-	printf("═════════════\n");
-	printf("    -h|--help  ─────── Print this text and exit.\n\n");
-	printf("    -v|--version  ──── Print version and exit.\n\n");
-	printf("    --features  ────── Print list of supported features.\n\n");
-}

src/picture.c

@@ -1,98 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "picture.h"
-
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <assert.h>
-
-#include "tools.h"
-#include "logging.h"
-
-
-struct picture_t *picture_init(void) {
-	struct picture_t *picture;
-
-	A_CALLOC(picture, 1);
-	return picture;
-}
-
-void picture_destroy(struct picture_t *picture) {
-	if (picture->data) {
-		free(picture->data);
-	}
-	free(picture);
-}
-
-size_t picture_get_generous_size(unsigned width, unsigned height) {
-	return ((width * height) << 1) * 2;
-}
-
-void picture_realloc_data(struct picture_t *picture, size_t size) {
-	if (picture->allocated < size) {
-		LOG_DEBUG("Increasing picture %p buffer: %zu -> %zu (+%zu)",
-			picture, picture->allocated, size, size - picture->allocated);
-		A_REALLOC(picture->data, size);
-		picture->allocated = size;
-	}
-}
-
-void picture_set_data(struct picture_t *picture, const unsigned char *data, size_t size) {
-	picture_realloc_data(picture, size);
-	memcpy(picture->data, data, size);
-	picture->used = size;
-}
-
-void picture_append_data(struct picture_t *picture, const unsigned char *data, size_t size) {
-	size_t new_used = picture->used + size;
-
-	picture_realloc_data(picture, new_used);
-	memcpy(picture->data + picture->used, data, size);
-	picture->used = new_used;
-}
-
-void picture_copy(const struct picture_t *src, struct picture_t *dest) {
-	picture_set_data(dest, src->data, src->used);
-
-#	define COPY(_field) dest->_field = src->_field
-
-	COPY(used);
-
-	COPY(width);
-	COPY(height);
-
-	COPY(grab_ts);
-	COPY(encode_begin_ts);
-	COPY(encode_end_ts);
-
-#	undef COPY
-}
-
-bool picture_compare(const struct picture_t *a, const struct picture_t *b) {
-	return (
-		a->allocated && b->allocated
-		&& a->used == b->used
-		&& !memcmp(a->data, b->data, b->used)
-	);
-}

src/stream.c

@@ -1,568 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "stream.h"
-
-#include <stdlib.h>
-#include <stdbool.h>
-#include <stdatomic.h>
-#include <unistd.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <pthread.h>
-
-#include "tools.h"
-#include "threading.h"
-#include "logging.h"
-#include "picture.h"
-#include "device.h"
-#include "encoder.h"
-#ifdef WITH_GPIO
-#	include "gpio/gpio.h"
-#endif
-
-
-struct _worker_t {
-	pthread_t			tid;
-	unsigned			number;
-	atomic_bool			*proc_stop;
-	atomic_bool			*workers_stop;
-
-	long double			last_comp_time;
-
-	pthread_mutex_t		has_job_mutex;
-	unsigned			buf_index;
-	atomic_bool			has_job;
-	bool				job_timely;
-	bool				job_failed;
-	long double			job_start_ts;
-	pthread_cond_t		has_job_cond;
-
-	pthread_mutex_t		*free_workers_mutex;
-	unsigned			*free_workers;
-	pthread_cond_t		*free_workers_cond;
-
-	struct _worker_t	*order_prev;
-	struct _worker_t	*order_next;
-
-	struct device_t		*dev;
-	struct encoder_t	*encoder;
-};
-
-struct _workers_pool_t {
-	unsigned			n_workers;
-	struct _worker_t	*workers;
-	struct _worker_t	*oldest_worker;
-	struct _worker_t	*latest_worker;
-
-	long double			approx_comp_time;
-
-	pthread_mutex_t		free_workers_mutex;
-	unsigned			free_workers;
-	pthread_cond_t		free_workers_cond;
-
-	atomic_bool			workers_stop;
-
-	long double			desired_frames_interval;
-};
-
-
-static struct _workers_pool_t *_stream_init_loop(struct stream_t *stream);
-static struct _workers_pool_t *_stream_init_one(struct stream_t *stream);
-static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index, unsigned captured_fps);
-
-static struct _workers_pool_t *_workers_pool_init(struct stream_t *stream);
-static void _workers_pool_destroy(struct _workers_pool_t *pool);
-
-static void *_worker_thread(void *v_worker);
-
-static struct _worker_t *_workers_pool_wait(struct _workers_pool_t *pool);
-static void _workers_pool_assign(struct _workers_pool_t *pool, struct _worker_t *ready_worker, unsigned buf_index);
-static long double _workers_pool_get_fluency_delay(struct _workers_pool_t *pool, struct _worker_t *ready_worker);
-
-
-struct stream_t *stream_init(struct device_t *dev, struct encoder_t *encoder) {
-	struct process_t *proc;
-	struct stream_t *stream;
-
-	A_CALLOC(proc, 1);
-	atomic_init(&proc->stop, false);
-	atomic_init(&proc->slowdown, false);
-
-	A_CALLOC(stream, 1);
-	stream->picture = picture_init();
-	stream->dev = dev;
-	stream->encoder = encoder;
-	atomic_init(&stream->updated, false);
-	A_MUTEX_INIT(&stream->mutex);
-	stream->proc = proc;
-	return stream;
-}
-
-void stream_destroy(struct stream_t *stream) {
-	A_MUTEX_DESTROY(&stream->mutex);
-	picture_destroy(stream->picture);
-	free(stream->proc);
-	free(stream);
-}
-
-void stream_loop(struct stream_t *stream) {
-	struct _workers_pool_t *pool;
-
-	LOG_INFO("Using V4L2 device: %s", stream->dev->path);
-	LOG_INFO("Using desired FPS: %u", stream->dev->desired_fps);
-
-	while ((pool = _stream_init_loop(stream)) != NULL) {
-		long double grab_after = 0;
-		unsigned fluency_passed = 0;
-		unsigned captured_fps = 0;
-		unsigned captured_fps_accum = 0;
-		long long captured_fps_second = 0;
-		bool persistent_timeout_reported = false;
-
-		LOG_INFO("Capturing ...");
-
-		LOG_DEBUG("Pre-allocating memory for stream picture ...");
-		picture_realloc_data(stream->picture, picture_get_generous_size(stream->dev->run->width, stream->dev->run->height));
-
-		while (!atomic_load(&stream->proc->stop)) {
-			struct _worker_t *ready_worker;
-
-			SEP_DEBUG('-');
-			LOG_DEBUG("Waiting for worker ...");
-
-			ready_worker = _workers_pool_wait(pool);
-
-			if (!ready_worker->job_failed) {
-				if (ready_worker->job_timely) {
-					_stream_expose_picture(stream, ready_worker->buf_index, captured_fps);
-					LOG_PERF("##### Encoded picture exposed; worker=%u", ready_worker->number);
-				} else {
-					LOG_PERF("----- Encoded picture dropped; worker=%u", ready_worker->number);
-				}
-			} else {
-				break;
-			}
-
-			if (atomic_load(&stream->proc->stop)) {
-				break;
-			}
-
-			if (atomic_load(&stream->proc->slowdown)) {
-				usleep(1000000);
-			}
-
-			bool has_read;
-			bool has_write;
-			bool has_error;
-			int selected = device_select(stream->dev, &has_read, &has_write, &has_error);
-
-			if (selected < 0) {
-				if (errno != EINTR) {
-					LOG_PERROR("Mainloop select() error");
-					break;
-				}
-
-			} else if (selected == 0) {
-#				ifdef WITH_GPIO
-				gpio_set_stream_online(false);
-#				endif
-
-				if (stream->dev->persistent) {
-					if (!persistent_timeout_reported) {
-						LOG_ERROR("Mainloop select() timeout, polling ...")
-						persistent_timeout_reported = true;
-					}
-
-					continue;
-				} else {
-					LOG_ERROR("Mainloop select() timeout");
-					break;
-				}
-
-			} else {
-				persistent_timeout_reported = false;
-
-				if (has_read) {
-					LOG_DEBUG("Frame is ready");
-
-#					ifdef WITH_GPIO
-					gpio_set_stream_online(true);
-#					endif
-
-					int buf_index;
-					long double now = get_now_monotonic();
-					long long now_second = floor_ms(now);
-
-					if ((buf_index = device_grab_buffer(stream->dev)) < 0) {
-						break;
-					}
-
-					// Workaround for broken, corrupted frames:
-					// Under low light conditions corrupted frames may get captured.
-					// The good thing is such frames are quite small compared to the regular pictures.
-					// For example a VGA (640x480) webcam picture is normally >= 8kByte large,
-					// corrupted frames are smaller.
-					if (stream->dev->run->hw_buffers[buf_index].used < stream->dev->min_frame_size) {
-						LOG_DEBUG("Dropped too small frame sized %zu bytes, assuming it was broken",
-							stream->dev->run->hw_buffers[buf_index].used);
-						goto pass_frame;
-					}
-
-					{
-						if (now < grab_after) {
-							fluency_passed += 1;
-							LOG_VERBOSE("Passed %u frames for fluency: now=%.03Lf, grab_after=%.03Lf", fluency_passed, now, grab_after);
-							goto pass_frame;
-						}
-						fluency_passed = 0;
-
-						if (now_second != captured_fps_second) {
-							captured_fps = captured_fps_accum;
-							captured_fps_accum = 0;
-							captured_fps_second = now_second;
-							LOG_PERF_FPS("A new second has come; captured_fps=%u", captured_fps);
-						}
-						captured_fps_accum += 1;
-
-						long double fluency_delay = _workers_pool_get_fluency_delay(pool, ready_worker);
-
-						grab_after = now + fluency_delay;
-						LOG_VERBOSE("Fluency: delay=%.03Lf, grab_after=%.03Lf", fluency_delay, grab_after);
-					}
-
-					_workers_pool_assign(pool, ready_worker, buf_index);
-
-					goto next_handlers; // Поток сам освободит буфер
-
-					pass_frame:
-
-					if (device_release_buffer(stream->dev, buf_index) < 0) {
-						break;
-					}
-				}
-
-				next_handlers:
-
-				if (has_write) {
-					LOG_ERROR("Got unexpected writing event, seems device was disconnected");
-					break;
-				}
-
-				if (has_error) {
-					LOG_INFO("Got V4L2 event");
-					if (device_consume_event(stream->dev) < 0) {
-						break;
-					}
-				}
-			}
-		}
-
-		A_MUTEX_LOCK(&stream->mutex);
-		stream->online = false;
-		atomic_store(&stream->updated, true);
-		A_MUTEX_UNLOCK(&stream->mutex);
-
-		_workers_pool_destroy(pool);
-		device_switch_capturing(stream->dev, false);
-		device_close(stream->dev);
-
-#		ifdef WITH_GPIO
-		gpio_set_stream_online(false);
-#		endif
-	}
-}
-
-void stream_loop_break(struct stream_t *stream) {
-	atomic_store(&stream->proc->stop, true);
-}
-
-void stream_switch_slowdown(struct stream_t *stream, bool slowdown) {
-	atomic_store(&stream->proc->slowdown, slowdown);
-}
-
-static struct _workers_pool_t *_stream_init_loop(struct stream_t *stream) {
-	struct _workers_pool_t *pool = NULL;
-	int access_error = 0;
-
-	LOG_DEBUG("%s: stream->proc->stop=%d", __FUNCTION__, atomic_load(&stream->proc->stop));
-
-	while (!atomic_load(&stream->proc->stop)) {
-		if (access(stream->dev->path, R_OK|W_OK) < 0) {
-			if (access_error != errno) {
-				SEP_INFO('=');
-				LOG_PERROR("Can't access device");
-				LOG_INFO("Waiting for the device access ...");
-				access_error = errno;
-			}
-			sleep(stream->dev->error_delay);
-			continue;
-		} else {
-			SEP_INFO('=');
-			access_error = 0;
-		}
-
-		if ((pool = _stream_init_one(stream)) == NULL) {
-			LOG_INFO("Sleeping %u seconds before new stream init ...", stream->dev->error_delay);
-			sleep(stream->dev->error_delay);
-		} else {
-			break;
-		}
-	}
-	return pool;
-}
-
-static struct _workers_pool_t *_stream_init_one(struct stream_t *stream) {
-	if (device_open(stream->dev) < 0) {
-		goto error;
-	}
-	if (device_switch_capturing(stream->dev, true) < 0) {
-		goto error;
-	}
-
-	encoder_prepare(stream->encoder, stream->dev);
-	return _workers_pool_init(stream);
-
-	error:
-		device_close(stream->dev);
-		return NULL;
-}
-
-static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index, unsigned captured_fps) {
-	A_MUTEX_LOCK(&stream->mutex);
-
-	picture_copy(stream->dev->run->pictures[buf_index], stream->picture);
-
-	stream->online = true;
-	stream->captured_fps = captured_fps;
-	atomic_store(&stream->updated, true);
-
-	A_MUTEX_UNLOCK(&stream->mutex);
-}
-
-static struct _workers_pool_t *_workers_pool_init(struct stream_t *stream) {
-	struct _workers_pool_t *pool;
-
-#	define DEV(_next) stream->dev->_next
-#	define RUN(_next) stream->dev->run->_next
-
-	LOG_INFO("Creating pool with %u workers ...", RUN(n_workers));
-
-	A_CALLOC(pool, 1);
-
-	pool->n_workers = RUN(n_workers);
-	A_CALLOC(pool->workers, pool->n_workers);
-
-	A_MUTEX_INIT(&pool->free_workers_mutex);
-	A_COND_INIT(&pool->free_workers_cond);
-
-	atomic_init(&pool->workers_stop, false);
-
-	if (DEV(desired_fps) > 0 && (DEV(desired_fps) < RUN(hw_fps) || RUN(hw_fps) == 0)) {
-		pool->desired_frames_interval = (long double)1 / DEV(desired_fps);
-	}
-
-#	undef RUN
-#	undef DEV
-
-	for (unsigned number = 0; number < pool->n_workers; ++number) {
-#		define WORKER(_next) pool->workers[number]._next
-
-		A_MUTEX_INIT(&WORKER(has_job_mutex));
-		atomic_init(&WORKER(has_job), false);
-		A_COND_INIT(&WORKER(has_job_cond));
-
-		WORKER(number) = number;
-		WORKER(proc_stop) = &stream->proc->stop;
-		WORKER(workers_stop) = &pool->workers_stop;
-
-		WORKER(free_workers_mutex) = &pool->free_workers_mutex;
-		WORKER(free_workers) = &pool->free_workers;
-		WORKER(free_workers_cond) = &pool->free_workers_cond;
-
-		WORKER(dev) = stream->dev;
-		WORKER(encoder) = stream->encoder;
-
-		A_THREAD_CREATE(&WORKER(tid), _worker_thread, (void *)&(pool->workers[number]));
-
-		pool->free_workers += 1;
-
-#		undef WORKER
-	}
-	return pool;
-}
-
-static void _workers_pool_destroy(struct _workers_pool_t *pool) {
-	LOG_INFO("Destroying workers pool ...");
-
-	atomic_store(&pool->workers_stop, true);
-	for (unsigned number = 0; number < pool->n_workers; ++number) {
-#		define WORKER(_next) pool->workers[number]._next
-
-		A_MUTEX_LOCK(&WORKER(has_job_mutex));
-		atomic_store(&WORKER(has_job), true); // Final job: die
-		A_MUTEX_UNLOCK(&WORKER(has_job_mutex));
-		A_COND_SIGNAL(&WORKER(has_job_cond));
-
-		A_THREAD_JOIN(WORKER(tid));
-		A_MUTEX_DESTROY(&WORKER(has_job_mutex));
-		A_COND_DESTROY(&WORKER(has_job_cond));
-
-#		undef WORKER
-	}
-
-	A_MUTEX_DESTROY(&pool->free_workers_mutex);
-	A_COND_DESTROY(&pool->free_workers_cond);
-
-	free(pool->workers);
-	free(pool);
-}
-
-static void *_worker_thread(void *v_worker) {
-	struct _worker_t *worker = (struct _worker_t *)v_worker;
-
-	A_THREAD_RENAME("worker-%u", worker->number);
-	LOG_DEBUG("Hello! I am a worker #%u ^_^", worker->number);
-
-	while (!atomic_load(worker->proc_stop) && !atomic_load(worker->workers_stop)) {
-		LOG_DEBUG("Worker %u waiting for a new job ...", worker->number);
-
-		A_MUTEX_LOCK(&worker->has_job_mutex);
-		A_COND_WAIT_TRUE(atomic_load(&worker->has_job), &worker->has_job_cond, &worker->has_job_mutex);
-		A_MUTEX_UNLOCK(&worker->has_job_mutex);
-
-		if (!atomic_load(worker->workers_stop)) {
-#			define PICTURE(_next) worker->dev->run->pictures[worker->buf_index]->_next
-
-			LOG_DEBUG("Worker %u compressing JPEG from buffer %u ...", worker->number, worker->buf_index);
-
-			worker->job_failed = (bool)encoder_compress_buffer(worker->encoder, worker->dev, worker->number, worker->buf_index);
-
-			if (device_release_buffer(worker->dev, worker->buf_index) == 0) {
-				if (!worker->job_failed) {
-					worker->job_start_ts = PICTURE(encode_begin_ts);
-					worker->last_comp_time = PICTURE(encode_end_ts) - worker->job_start_ts;
-
-					LOG_VERBOSE("Compressed new JPEG: size=%zu, time=%0.3Lf, worker=%u, buffer=%u",
-						PICTURE(used), worker->last_comp_time, worker->number, worker->buf_index);
-				} else {
-					LOG_VERBOSE("Compression failed: worker=%u, buffer=%u", worker->number, worker->buf_index);
-				}
-			} else {
-				worker->job_failed = true;
-			}
-
-			atomic_store(&worker->has_job, false);
-
-#			undef PICTURE
-		}
-
-		A_MUTEX_LOCK(worker->free_workers_mutex);
-		*worker->free_workers += 1;
-		A_MUTEX_UNLOCK(worker->free_workers_mutex);
-		A_COND_SIGNAL(worker->free_workers_cond);
-	}
-
-	LOG_DEBUG("Bye-bye (worker %u)", worker->number);
-	return NULL;
-}
-
-static struct _worker_t *_workers_pool_wait(struct _workers_pool_t *pool) {
-	struct _worker_t *ready_worker = NULL;
-
-	A_MUTEX_LOCK(&pool->free_workers_mutex);
-	A_COND_WAIT_TRUE(pool->free_workers, &pool->free_workers_cond, &pool->free_workers_mutex);
-	A_MUTEX_UNLOCK(&pool->free_workers_mutex);
-
-	if (pool->oldest_worker && !atomic_load(&pool->oldest_worker->has_job)) {
-		ready_worker = pool->oldest_worker;
-		ready_worker->job_timely = true;
-		pool->oldest_worker = pool->oldest_worker->order_next;
-	} else {
-		for (unsigned number = 0; number < pool->n_workers; ++number) {
-			if (
-				!atomic_load(&pool->workers[number].has_job) && (
-					ready_worker == NULL
-					|| ready_worker->job_start_ts < pool->workers[number].job_start_ts
-				)
-			) {
-				ready_worker = &pool->workers[number];
-				break;
-			}
-		}
-		assert(ready_worker != NULL);
-		ready_worker->job_timely = false; // Освободился воркер, получивший задание позже (или самый первый при самом первом захвате)
-	}
-	return ready_worker;
-}
-
-static void _workers_pool_assign(struct _workers_pool_t *pool, struct _worker_t *ready_worker, unsigned buf_index) {
-	if (pool->oldest_worker == NULL) {
-		pool->oldest_worker = ready_worker;
-		pool->latest_worker = pool->oldest_worker;
-	} else {
-		if (ready_worker->order_next) {
-			ready_worker->order_next->order_prev = ready_worker->order_prev;
-		}
-		if (ready_worker->order_prev) {
-			ready_worker->order_prev->order_next = ready_worker->order_next;
-		}
-		ready_worker->order_prev = pool->latest_worker;
-		pool->latest_worker->order_next = ready_worker;
-		pool->latest_worker = ready_worker;
-	}
-	pool->latest_worker->order_next = NULL;
-
-	A_MUTEX_LOCK(&ready_worker->has_job_mutex);
-	ready_worker->buf_index = buf_index;
-	atomic_store(&ready_worker->has_job, true);
-	A_MUTEX_UNLOCK(&ready_worker->has_job_mutex);
-	A_COND_SIGNAL(&ready_worker->has_job_cond);
-
-	A_MUTEX_LOCK(&pool->free_workers_mutex);
-	pool->free_workers -= 1;
-	A_MUTEX_UNLOCK(&pool->free_workers_mutex);
-
-	LOG_DEBUG("Assigned new frame in buffer %u to worker %u", buf_index, ready_worker->number);
-}
-
-static long double _workers_pool_get_fluency_delay(struct _workers_pool_t *pool, struct _worker_t *ready_worker) {
-	long double approx_comp_time;
-	long double min_delay;
-
-	approx_comp_time = pool->approx_comp_time * 0.9 + ready_worker->last_comp_time * 0.1;
-
-	LOG_VERBOSE("Correcting approx_comp_time: %.3Lf -> %.3Lf (last_comp_time=%.3Lf)",
-		pool->approx_comp_time, approx_comp_time, ready_worker->last_comp_time);
-
-	pool->approx_comp_time = approx_comp_time;
-
-	min_delay = pool->approx_comp_time / pool->n_workers; // Среднее время работы размазывается на N воркеров
-
-	if (pool->desired_frames_interval > 0 && min_delay > 0 && pool->desired_frames_interval > min_delay) {
-		// Искусственное время задержки на основе желаемого FPS, если включен --desired-fps
-		// и аппаратный fps не попадает точно в желаемое значение
-		return pool->desired_frames_interval;
-	}
-	return min_delay;
-}

src/ustreamer/blank.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,36 +22,15 @@
 
 #include "blank.h"
 
-#include <stdio.h>
-#include <stdbool.h>
-#include <setjmp.h>
 
-#include <jpeglib.h>
-
-#include "../tools.h"
-#include "../logging.h"
-#include "../picture.h"
-
-#include "data/blank_jpeg.h"
+static frame_s *_init_internal(void);
+static frame_s *_init_external(const char *path);
 
 
-struct _jpeg_error_manager_t {
-	struct jpeg_error_mgr	mgr; // Default manager
-	jmp_buf					jmp;
-};
+frame_s *blank_frame_init(const char *path) {
+	frame_s *blank = NULL;
 
-
-static struct picture_t *_init_internal(void);
-static struct picture_t *_init_external(const char *path);
-
-static int _jpeg_read_geometry(FILE *fp, unsigned *width, unsigned *height);
-static void _jpeg_error_handler(j_common_ptr jpeg);
-
-
-struct picture_t *blank_picture_init(const char *path) {
-	struct picture_t *blank = NULL;
-
-	if (path) {
+	if (path && path[0] != '\0') {
 		blank = _init_external(path);
 	}
 
@@ -64,40 +43,30 @@ struct picture_t *blank_picture_init(const char *path) {
 	return blank;
 }
 
-static struct picture_t *_init_internal(void) {
-	struct picture_t *blank;
-
-	blank = picture_init();
-	picture_set_data(blank, BLANK_JPEG_DATA, ARRAY_LEN(BLANK_JPEG_DATA));
+static frame_s *_init_internal(void) {
+	frame_s *blank = frame_init();
+	frame_set_data(blank, BLANK_JPEG_DATA, BLANK_JPEG_DATA_SIZE);
 	blank->width = BLANK_JPEG_WIDTH;
 	blank->height = BLANK_JPEG_HEIGHT;
+	blank->format = V4L2_PIX_FMT_JPEG;
 	return blank;
 }
 
-static struct picture_t *_init_external(const char *path) {
+static frame_s *_init_external(const char *path) {
 	FILE *fp = NULL;
-	struct picture_t *blank;
 
-	blank = picture_init();
+	frame_s *blank = frame_init();
+	blank->format = V4L2_PIX_FMT_JPEG;
 
 	if ((fp = fopen(path, "rb")) == NULL) {
 		LOG_PERROR("Can't open blank placeholder '%s'", path);
 		goto error;
 	}
 
-	if (_jpeg_read_geometry(fp, &blank->width, &blank->height) < 0) {
-		goto error;
-	}
-
-	if (fseek(fp, 0, SEEK_SET) < 0) {
-		LOG_PERROR("Can't seek to begin of the blank placeholder");
-		goto error;
-	}
-
 #	define CHUNK_SIZE ((size_t)(100 * 1024))
 	while (true) {
 		if (blank->used + CHUNK_SIZE >= blank->allocated) {
-			picture_realloc_data(blank, blank->used + CHUNK_SIZE * 2);
+			frame_realloc_data(blank, blank->used + CHUNK_SIZE * 2);
 		}
 
 		size_t readed = fread(blank->data + blank->used, 1, CHUNK_SIZE, fp);
@@ -105,7 +74,7 @@ static struct picture_t *_init_external(const char *path) {
 
 		if (readed < CHUNK_SIZE) {
 			if (feof(fp)) {
-				goto ok;
+				break;
 			} else {
 				LOG_PERROR("Can't read blank placeholder");
 				goto error;
@@ -114,8 +83,19 @@ static struct picture_t *_init_external(const char *path) {
 	}
 #	undef CHUNK_SIZE
 
+	frame_s *decoded = frame_init();
+	if (unjpeg(blank, decoded, false) < 0) {
+		frame_destroy(decoded);
+		goto error;
+	}
+	blank->width = decoded->width;
+	blank->height = decoded->height;
+	frame_destroy(decoded);
+
+	goto ok;
+
 	error:
-		picture_destroy(blank);
+		frame_destroy(blank);
 		blank = NULL;
 
 	ok:
@@ -125,37 +105,3 @@ static struct picture_t *_init_external(const char *path) {
 
 	return blank;
 }
-
-static int _jpeg_read_geometry(FILE *fp, unsigned *width, unsigned *height) {
-	struct jpeg_decompress_struct jpeg;
-	struct _jpeg_error_manager_t jpeg_error;
-
-	jpeg_create_decompress(&jpeg);
-
-	// https://stackoverflow.com/questions/19857766/error-handling-in-libjpeg
-	jpeg.err = jpeg_std_error((struct jpeg_error_mgr *)&jpeg_error);
-	jpeg_error.mgr.error_exit = _jpeg_error_handler;
-	if (setjmp(jpeg_error.jmp) < 0) {
-		jpeg_destroy_decompress(&jpeg);
-		return -1;
-	}
-
-	jpeg_stdio_src(&jpeg, fp);
-	jpeg_read_header(&jpeg, TRUE);
-	jpeg_start_decompress(&jpeg);
-
-	*width = jpeg.output_width;
-	*height = jpeg.output_height;
-
-	jpeg_destroy_decompress(&jpeg);
-	return 0;
-}
-
-static void _jpeg_error_handler(j_common_ptr jpeg) {
-	struct _jpeg_error_manager_t *jpeg_error = (struct _jpeg_error_manager_t *)jpeg->err;
-	char msg[JMSG_LENGTH_MAX];
-
-	(*jpeg_error->mgr.format_message)(jpeg, msg);
-	LOG_ERROR("Invalid blank placeholder: %s", msg);
-	longjmp(jpeg_error->jmp, -1);
-}

src/ustreamer/blank.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,7 +22,17 @@
 
 #pragma once
 
-#include "../picture.h"
+#include <stdio.h>
+#include <stdbool.h>
+
+#include <linux/videodev2.h>
+
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/frame.h"
+#include "../libs/unjpeg.h"
+
+#include "data/blank_jpeg.h"
 
 
-struct picture_t *blank_picture_init(const char *path);
+frame_s *blank_frame_init(const char *path);

src/ustreamer/data/blank_jpeg.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -19,14 +19,14 @@
 #                                                                            #
 *****************************************************************************/
 
-
-#pragma once
+#include "blank_jpeg.h"
 
 
 const unsigned BLANK_JPEG_WIDTH = 640;
 const unsigned BLANK_JPEG_HEIGHT = 480;
 
-const unsigned char BLANK_JPEG_DATA[] = {
+const size_t BLANK_JPEG_DATA_SIZE = 13845;
+const uint8_t BLANK_JPEG_DATA[] = {
 	0xFF, 0xD8, 0xFF, 0xE1, 0x09, 0x50, 0x68, 0x74, 0x74, 0x70, 0x3A, 0x2F, 0x2F, 0x6E, 0x73, 0x2E, 0x61, 0x64, 0x6F, 0x62,
 	0x65, 0x2E, 0x63, 0x6F, 0x6D, 0x2F, 0x78, 0x61, 0x70, 0x2F, 0x31, 0x2E, 0x30, 0x2F, 0x00, 0x3C, 0x3F, 0x78, 0x70, 0x61,
 	0x63, 0x6B, 0x65, 0x74, 0x20, 0x62, 0x65, 0x67, 0x69, 0x6E, 0x3D, 0x22, 0xEF, 0xBB, 0xBF, 0x22, 0x20, 0x69, 0x64, 0x3D,

src/ustreamer/data/blank_jpeg.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,13 @@
 
 #pragma once
 
-#ifndef VERSION
-#	define VERSION "2.1"
-#endif
+#include <stdint.h>
+
+#include <sys/types.h>
+
+
+extern const unsigned BLANK_JPEG_WIDTH;
+extern const unsigned BLANK_JPEG_HEIGHT;
+
+extern const size_t BLANK_JPEG_DATA_SIZE;
+extern const uint8_t BLANK_JPEG_DATA[];

src/ustreamer/data/index.html

@@ -12,30 +12,30 @@
 	<hr>
 	<ul>
 		<li>
-			<a href="/state"><b>/state</b></a><br>
+			<a href="state"><b>/state</b></a><br>
 			Get JSON structure with the state of the server.
 		</li>
 		<br>
 		<li>
-			<a href="/snapshot"><b>/snapshot</b></a><br>
+			<a href="snapshot"><b>/snapshot</b></a><br>
 			Get a current actual image from the server.
 		</li>
 		<br>
 		<li>
-			<a href="/stream"><b>/stream</b></a><br>
+			<a href="stream"><b>/stream</b></a><br>
 			Get a live stream. Query params:<br>
 			<br>
 			<ul>
 				<li>
 					<b>key=abc123</b><br>
 					The user-defined key, which is part of cookie <i>stream_client</i>, which allows<br>
-					the stream client to determine its identifier and view statistics using <a href="/state">/state</a>.
+					the stream client to determine its identifier and view statistics using <a href="state">/state</a>.
 				</li>
 				<br>
 				<li>
 					<b>extra_headers=1</b><br>
-					Add <i>X-UStreamer-*</i> headers to the <a href="/stream">/stream</a> handle
-					(like with the <a href="/snapshot">/snapshot</a>).
+					Add <i>X-UStreamer-*</i> headers to the <a href="stream">/stream</a> handle
+					(like with the <a href="snapshot">/snapshot</a>).
 				</li>
 				<br>
 				<li>
@@ -50,6 +50,11 @@
 					Without this option, when the frame series is completed, WebKit-based browsers<br>
 					renders the last frame with a delay.
 				</li>
+				<br>
+				<li>
+					<b>zero_data=1</b><br>
+					Disables the actual sending of JPEG data and leaves only response headers.
+				</li>
 			</ul>
 		</li>
 		<br>
@@ -57,9 +62,9 @@
 			The mjpg-streamer compatibility layer:<br>
 			<br>
 			<ul>
-				<li><a href="/?action=snapshot">/?action=snapshot</a> as alias to the <a href="/snapshot">/snapshot</a>.</li>
+				<li><a href="?action=snapshot">/?action=snapshot</a> as alias to the <a href="snapshot">/snapshot</a>.</li>
 				<br>
-				<li><a href="/?action=stream">/?action=stream</a> as alias to the <a href="/stream">/stream</a>.</li>
+				<li><a href="?action=stream">/?action=stream</a> as alias to the <a href="stream">/stream</a>.</li>
 			</ul>
 		</li>
 	</ul>

src/ustreamer/data/index_html.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -19,13 +19,10 @@
 #                                                                            #
 *****************************************************************************/
 
-
-#pragma once
-
-#include "../../config.h"
+#include "index_html.h"
 
 
-const char HTML_INDEX_PAGE[] = " \
+const char *const HTML_INDEX_PAGE = " \
 	<!DOCTYPE html> \
 	\
 	<html> \
@@ -40,30 +37,30 @@ const char HTML_INDEX_PAGE[] = " \
 		<hr> \
 		<ul> \
 			<li> \
-				<a href=\"/state\"><b>/state</b></a><br> \
+				<a href=\"state\"><b>/state</b></a><br> \
 				Get JSON structure with the state of the server. \
 			</li> \
 			<br> \
 			<li> \
-				<a href=\"/snapshot\"><b>/snapshot</b></a><br> \
+				<a href=\"snapshot\"><b>/snapshot</b></a><br> \
 				Get a current actual image from the server. \
 			</li> \
 			<br> \
 			<li> \
-				<a href=\"/stream\"><b>/stream</b></a><br> \
+				<a href=\"stream\"><b>/stream</b></a><br> \
 				Get a live stream. Query params:<br> \
 				<br> \
 				<ul> \
 					<li> \
 						<b>key=abc123</b><br> \
 						The user-defined key, which is part of cookie <i>stream_client</i>, which allows<br> \
-						the stream client to determine its identifier and view statistics using <a href=\"/state\">/state</a>. \
+						the stream client to determine its identifier and view statistics using <a href=\"state\">/state</a>. \
 					</li> \
 					<br> \
 					<li> \
 						<b>extra_headers=1</b><br> \
-						Add <i>X-UStreamer-*</i> headers to the <a href=\"/stream\">/stream</a> handle \
-						(like with the <a href=\"/snapshot\">/snapshot</a>). \
+						Add <i>X-UStreamer-*</i> headers to the <a href=\"stream\">/stream</a> handle \
+						(like with the <a href=\"snapshot\">/snapshot</a>). \
 					</li> \
 					<br> \
 					<li> \
@@ -78,6 +75,11 @@ const char HTML_INDEX_PAGE[] = " \
 						Without this option, when the frame series is completed, WebKit-based browsers<br> \
 						renders the last frame with a delay. \
 					</li> \
+					<br> \
+					<li> \
+						<b>zero_data=1</b><br> \
+						Disables the actual sending of JPEG data and leaves only response headers. \
+					</li> \
 				</ul> \
 			</li> \
 			<br> \
@@ -85,9 +87,9 @@ const char HTML_INDEX_PAGE[] = " \
 				The mjpg-streamer compatibility layer:<br> \
 				<br> \
 				<ul> \
-					<li><a href=\"/?action=snapshot\">/?action=snapshot</a> as alias to the <a href=\"/snapshot\">/snapshot</a>.</li> \
+					<li><a href=\"?action=snapshot\">/?action=snapshot</a> as alias to the <a href=\"snapshot\">/snapshot</a>.</li> \
 					<br> \
-					<li><a href=\"/?action=stream\">/?action=stream</a> as alias to the <a href=\"/stream\">/stream</a>.</li> \
+					<li><a href=\"?action=stream\">/?action=stream</a> as alias to the <a href=\"stream\">/stream</a>.</li> \
 				</ul> \
 			</li> \
 		</ul> \

src/ustreamer/data/index_html.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,5 +22,9 @@
 
 #pragma once
 
+#include <sys/types.h>
 
-char *base64_encode(const unsigned char *str);
+#include "../../libs/config.h"
+
+
+extern const char *const HTML_INDEX_PAGE;

src/ustreamer/device.c

@@ -0,0 +1,905 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "device.h"
+
+
+static const struct {
+	const char *name;
+	const v4l2_std_id standard;
+} _STANDARDS[] = {
+	{"UNKNOWN",	V4L2_STD_UNKNOWN},
+	{"PAL",		V4L2_STD_PAL},
+	{"NTSC",	V4L2_STD_NTSC},
+	{"SECAM",	V4L2_STD_SECAM},
+};
+
+static const struct {
+	const char *name;
+	const unsigned format;
+} _FORMATS[] = {
+	{"YUYV",	V4L2_PIX_FMT_YUYV},
+	{"UYVY",	V4L2_PIX_FMT_UYVY},
+	{"RGB565",	V4L2_PIX_FMT_RGB565},
+	{"RGB24",	V4L2_PIX_FMT_RGB24},
+	{"MJPEG",	V4L2_PIX_FMT_MJPEG},
+	{"JPEG",	V4L2_PIX_FMT_JPEG},
+};
+
+static const struct {
+	const char *name;
+	const enum v4l2_memory io_method;
+} _IO_METHODS[] = {
+	{"MMAP",	V4L2_MEMORY_MMAP},
+	{"USERPTR",	V4L2_MEMORY_USERPTR},
+};
+
+
+static int _device_open_check_cap(device_s *dev);
+static int _device_open_dv_timings(device_s *dev);
+static int _device_apply_dv_timings(device_s *dev);
+static int _device_open_format(device_s *dev, bool first);
+static void _device_open_hw_fps(device_s *dev);
+static void _device_open_jpeg_quality(device_s *dev);
+static int _device_open_io_method(device_s *dev);
+static int _device_open_io_method_mmap(device_s *dev);
+static int _device_open_io_method_userptr(device_s *dev);
+static int _device_open_queue_buffers(device_s *dev);
+static int _device_apply_resolution(device_s *dev, unsigned width, unsigned height);
+
+static void _device_apply_controls(device_s *dev);
+static int _device_query_control(
+	device_s *dev, struct v4l2_queryctrl *query,
+	const char *name, unsigned cid, bool quiet);
+static void _device_set_control(
+	device_s *dev, struct v4l2_queryctrl *query,
+	const char *name, unsigned cid, int value, bool quiet);
+
+static const char *_format_to_string_nullable(unsigned format);
+static const char *_format_to_string_supported(unsigned format);
+static const char *_standard_to_string(v4l2_std_id standard);
+static const char *_io_method_to_string_supported(enum v4l2_memory io_method);
+
+
+#define RUN(_next) dev->run->_next
+
+
+device_s *device_init(void) {
+	device_runtime_s *run;
+	A_CALLOC(run, 1);
+	run->fd = -1;
+
+	device_s *dev;
+	A_CALLOC(dev, 1);
+	dev->path = "/dev/video0";
+	dev->width = 640;
+	dev->height = 480;
+	dev->format = V4L2_PIX_FMT_YUYV;
+	dev->jpeg_quality = 80;
+	dev->standard = V4L2_STD_UNKNOWN;
+	dev->io_method = V4L2_MEMORY_MMAP;
+	dev->n_bufs = get_cores_available() + 1;
+	dev->min_frame_size = 128;
+	dev->timeout = 1;
+	dev->run = run;
+	return dev;
+}
+
+void device_destroy(device_s *dev) {
+	free(dev->run);
+	free(dev);
+}
+
+int device_parse_format(const char *str) {
+	for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
+		if (!strcasecmp(str, _FORMATS[index].name)) {
+			return _FORMATS[index].format;
+		}
+	}
+	return FORMAT_UNKNOWN;
+}
+
+v4l2_std_id device_parse_standard(const char *str) {
+	for (unsigned index = 1; index < ARRAY_LEN(_STANDARDS); ++index) {
+		if (!strcasecmp(str, _STANDARDS[index].name)) {
+			return _STANDARDS[index].standard;
+		}
+	}
+	return STANDARD_UNKNOWN;
+}
+
+int device_parse_io_method(const char *str) {
+	for (unsigned index = 0; index < ARRAY_LEN(_IO_METHODS); ++index) {
+		if (!strcasecmp(str, _IO_METHODS[index].name)) {
+			return _IO_METHODS[index].io_method;
+		}
+	}
+	return IO_METHOD_UNKNOWN;
+}
+
+int device_open(device_s *dev) {
+	if ((RUN(fd) = open(dev->path, O_RDWR|O_NONBLOCK)) < 0) {
+		LOG_PERROR("Can't open device");
+		goto error;
+	}
+	LOG_INFO("Device fd=%d opened", RUN(fd));
+
+	if (_device_open_check_cap(dev) < 0) {
+		goto error;
+	}
+	if (_device_open_dv_timings(dev) < 0) {
+		goto error;
+	}
+	if (_device_open_format(dev, true) < 0) {
+		goto error;
+	}
+	_device_open_hw_fps(dev);
+	_device_open_jpeg_quality(dev);
+	if (_device_open_io_method(dev) < 0) {
+		goto error;
+	}
+	if (_device_open_queue_buffers(dev) < 0) {
+		goto error;
+	}
+	_device_apply_controls(dev);
+
+	LOG_DEBUG("Device fd=%d initialized", RUN(fd));
+	return 0;
+
+	error:
+		device_close(dev);
+		return -1;
+}
+
+void device_close(device_s *dev) {
+	RUN(persistent_timeout_reported) = false;
+
+	if (RUN(hw_bufs)) {
+		LOG_DEBUG("Releasing device buffers ...");
+		for (unsigned index = 0; index < RUN(n_bufs); ++index) {
+#			define HW(_next) RUN(hw_bufs)[index]._next
+
+			if (HW(dma_fd) >= 0) {
+				close(HW(dma_fd));
+				HW(dma_fd) = -1;
+			}
+
+			if (dev->io_method == V4L2_MEMORY_MMAP) {
+				if (HW(raw.allocated) > 0 && HW(raw.data) != MAP_FAILED) {
+					if (munmap(HW(raw.data), HW(raw.allocated)) < 0) {
+						LOG_PERROR("Can't unmap device buffer=%u", index);
+					}
+				}
+			} else { // V4L2_MEMORY_USERPTR
+				if (HW(raw.data)) {
+					free(HW(raw.data));
+				}
+			}
+
+#			undef HW
+		}
+		RUN(n_bufs) = 0;
+		free(RUN(hw_bufs));
+		RUN(hw_bufs) = NULL;
+	}
+
+	if (RUN(fd) >= 0) {
+		LOG_DEBUG("Closing device ...");
+		if (close(RUN(fd)) < 0) {
+			LOG_PERROR("Can't close device fd=%d", RUN(fd));
+		} else {
+			LOG_INFO("Device fd=%d closed", RUN(fd));
+		}
+		RUN(fd) = -1;
+	}
+}
+
+int device_export_to_dma(device_s *dev) {
+#	define DMA_FD		RUN(hw_bufs[index].dma_fd)
+
+	for (unsigned index = 0; index < RUN(n_bufs); ++index) {
+		struct v4l2_exportbuffer exp = {0};
+		exp.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		exp.index = index;
+
+		LOG_DEBUG("Exporting device buffer=%u to DMA ...", index);
+		if (xioctl(RUN(fd), VIDIOC_EXPBUF, &exp) < 0) {
+			LOG_PERROR("Can't export device buffer=%u to DMA", index);
+			goto error;
+		}
+		DMA_FD = exp.fd;
+	}
+
+	return 0;
+
+	error:
+		for (unsigned index = 0; index < RUN(n_bufs); ++index) {
+			if (DMA_FD >= 0) {
+				close(DMA_FD);
+				DMA_FD = -1;
+			}
+		}
+		return -1;
+
+#	undef DMA_FD
+}
+
+int device_switch_capturing(device_s *dev, bool enable) {
+	if (enable != RUN(capturing)) {
+		enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+		LOG_DEBUG("%s device capturing ...", (enable ? "Starting" : "Stopping"));
+		if (xioctl(RUN(fd), (enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
+			LOG_PERROR("Can't %s capturing", (enable ? "start" : "stop"));
+			if (enable) {
+				return -1;
+			}
+		}
+
+		RUN(capturing) = enable;
+		LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
+	}
+	return 0;
+}
+
+int device_select(device_s *dev, bool *has_read, bool *has_write, bool *has_error) {
+	int retval;
+
+#	define INIT_FD_SET(_set) \
+		fd_set _set; FD_ZERO(&_set); FD_SET(RUN(fd), &_set);
+
+	INIT_FD_SET(read_fds);
+	INIT_FD_SET(write_fds);
+	INIT_FD_SET(error_fds);
+
+#	undef INIT_FD_SET
+
+	struct timeval timeout;
+	timeout.tv_sec = dev->timeout;
+	timeout.tv_usec = 0;
+
+	LOG_DEBUG("Calling select() on video device ...");
+
+	retval = select(RUN(fd) + 1, &read_fds, &write_fds, &error_fds, &timeout);
+	if (retval > 0) {
+		*has_read = FD_ISSET(RUN(fd), &read_fds);
+		*has_write = FD_ISSET(RUN(fd), &write_fds);
+		*has_error = FD_ISSET(RUN(fd), &error_fds);
+	} else {
+		*has_read = false;
+		*has_write = false;
+		*has_error = false;
+	}
+	LOG_DEBUG("Device select() --> %d", retval);
+
+	if (retval > 0) {
+		RUN(persistent_timeout_reported) = false;
+	} else if (retval == 0) {
+		if (dev->persistent) {
+			if (!RUN(persistent_timeout_reported)) {
+				LOG_ERROR("Persistent device timeout (unplugged)");
+				RUN(persistent_timeout_reported) = true;
+			}
+		} else {
+			// Если устройство не персистентное, то таймаут является ошибкой
+			retval = -1;
+		}
+	}
+	return retval;
+}
+
+int device_grab_buffer(device_s *dev, hw_buffer_s **hw) {
+	*hw = NULL;
+
+	struct v4l2_buffer buf = {0};
+	buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	buf.memory = dev->io_method;
+
+	LOG_DEBUG("Grabbing device buffer ...");
+	if (xioctl(RUN(fd), VIDIOC_DQBUF, &buf) < 0) {
+		LOG_PERROR("Can't grab device buffer");
+		return -1;
+	}
+
+	LOG_DEBUG("Grabbed new frame: buffer=%u, bytesused=%u", buf.index, buf.bytesused);
+
+	if (buf.index >= RUN(n_bufs)) {
+		LOG_ERROR("V4L2 error: grabbed invalid device buffer=%u, n_bufs=%u", buf.index, RUN(n_bufs));
+		return -1;
+	}
+
+	// Workaround for broken, corrupted frames:
+	// Under low light conditions corrupted frames may get captured.
+	// The good thing is such frames are quite small compared to the regular frames.
+	// For example a VGA (640x480) webcam frame is normally >= 8kByte large,
+	// corrupted frames are smaller.
+	if (buf.bytesused < dev->min_frame_size) {
+		LOG_DEBUG("Dropped too small frame, assuming it was broken: buffer=%u, bytesused=%u",
+			buf.index, buf.bytesused);
+		LOG_DEBUG("Releasing device buffer=%u (broken frame) ...", buf.index);
+		if (xioctl(RUN(fd), VIDIOC_QBUF, &buf) < 0) {
+			LOG_PERROR("Can't release device buffer=%u (broken frame)", buf.index);
+			return -1;
+		}
+		return -2;
+	}
+
+#	define HW(_next) RUN(hw_bufs)[buf.index]._next
+
+	if (HW(grabbed)) {
+		LOG_ERROR("V4L2 error: grabbed device buffer=%u is already used", buf.index);
+		return -1;
+	}
+	HW(grabbed) = true;
+
+	HW(raw.dma_fd) = HW(dma_fd);
+	HW(raw.used) = buf.bytesused;
+	HW(raw.width) = RUN(width);
+	HW(raw.height) = RUN(height);
+	HW(raw.format) = RUN(format);
+	HW(raw.stride) = RUN(stride);
+	HW(raw.online) = true;
+	memcpy(&HW(buf), &buf, sizeof(struct v4l2_buffer));
+	HW(raw.grab_ts) = get_now_monotonic();
+
+#	undef HW
+	*hw = &RUN(hw_bufs[buf.index]);
+	return buf.index;
+}
+
+int device_release_buffer(device_s *dev, hw_buffer_s *hw) {
+	const unsigned index = hw->buf.index;
+	LOG_DEBUG("Releasing device buffer=%u ...", index);
+
+	if (xioctl(RUN(fd), VIDIOC_QBUF, &hw->buf) < 0) {
+		LOG_PERROR("Can't release device buffer=%u", index);
+		return -1;
+	}
+	hw->grabbed = false;
+	return 0;
+}
+
+int device_consume_event(device_s *dev) {
+	struct v4l2_event event;
+
+	LOG_DEBUG("Consuming V4L2 event ...");
+	if (xioctl(RUN(fd), VIDIOC_DQEVENT, &event) == 0) {
+		switch (event.type) {
+			case V4L2_EVENT_SOURCE_CHANGE:
+				LOG_INFO("Got V4L2_EVENT_SOURCE_CHANGE: source changed");
+				return -1;
+			case V4L2_EVENT_EOS:
+				LOG_INFO("Got V4L2_EVENT_EOS: end of stream (ignored)");
+				return 0;
+		}
+	} else {
+		LOG_PERROR("Got some V4L2 device event, but where is it? ");
+	}
+	return 0;
+}
+
+static int _device_open_check_cap(device_s *dev) {
+	struct v4l2_capability cap = {0};
+
+	LOG_DEBUG("Querying device capabilities ...");
+	if (xioctl(RUN(fd), VIDIOC_QUERYCAP, &cap) < 0) {
+		LOG_PERROR("Can't query device capabilities");
+		return -1;
+	}
+
+	if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
+		LOG_ERROR("Video capture is not supported by device");
+		return -1;
+	}
+
+	if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
+		LOG_ERROR("Device doesn't support streaming IO");
+		return -1;
+	}
+
+	int input = dev->input; // Needs a pointer to int for ioctl()
+	LOG_INFO("Using input channel: %d", input);
+	if (xioctl(RUN(fd), VIDIOC_S_INPUT, &input) < 0) {
+		LOG_ERROR("Can't set input channel");
+		return -1;
+	}
+
+	if (dev->standard != V4L2_STD_UNKNOWN) {
+		LOG_INFO("Using TV standard: %s", _standard_to_string(dev->standard));
+		if (xioctl(RUN(fd), VIDIOC_S_STD, &dev->standard) < 0) {
+			LOG_ERROR("Can't set video standard");
+			return -1;
+		}
+	} else {
+		LOG_DEBUG("Using TV standard: DEFAULT");
+	}
+	return 0;
+}
+
+static int _device_open_dv_timings(device_s *dev) {
+	_device_apply_resolution(dev, dev->width, dev->height);
+	if (dev->dv_timings) {
+		LOG_DEBUG("Using DV-timings");
+
+		if (_device_apply_dv_timings(dev) < 0) {
+			return -1;
+		}
+
+		struct v4l2_event_subscription sub = {0};
+		sub.type = V4L2_EVENT_SOURCE_CHANGE;
+
+		LOG_DEBUG("Subscribing to DV-timings events ...")
+		if (xioctl(RUN(fd), VIDIOC_SUBSCRIBE_EVENT, &sub) < 0) {
+			LOG_PERROR("Can't subscribe to DV-timings events");
+			return -1;
+		}
+	}
+	return 0;
+}
+
+static int _device_apply_dv_timings(device_s *dev) {
+	struct v4l2_dv_timings dv = {0};
+
+	LOG_DEBUG("Calling ioctl(VIDIOC_QUERY_DV_TIMINGS) ...");
+	if (xioctl(RUN(fd), VIDIOC_QUERY_DV_TIMINGS, &dv) == 0) {
+		if (dv.type == V4L2_DV_BT_656_1120) {
+			// See v4l2_print_dv_timings() in the kernel
+			unsigned htot = V4L2_DV_BT_FRAME_WIDTH(&dv.bt);
+			unsigned vtot = V4L2_DV_BT_FRAME_HEIGHT(&dv.bt);
+			if (dv.bt.interlaced) {
+				vtot /= 2;
+			}
+			unsigned fps = ((htot * vtot) > 0 ? ((100 * (uint64_t)dv.bt.pixelclock)) / (htot * vtot) : 0);
+			LOG_INFO("Got new DV-timings: %ux%u%s%u.%02u, pixclk=%llu, vsync=%u, hsync=%u",
+				dv.bt.width, dv.bt.height, (dv.bt.interlaced ? "i" : "p"), fps / 100, fps % 100,
+				(unsigned long long)dv.bt.pixelclock, dv.bt.vsync, dv.bt.hsync); // See #11 about %llu
+		} else {
+			LOG_INFO("Got new DV-timings: %ux%u, pixclk=%llu, vsync=%u, hsync=%u",
+				dv.bt.width, dv.bt.height,
+				(unsigned long long)dv.bt.pixelclock, dv.bt.vsync, dv.bt.hsync);
+		}
+
+		LOG_DEBUG("Calling ioctl(VIDIOC_S_DV_TIMINGS) ...");
+		if (xioctl(RUN(fd), VIDIOC_S_DV_TIMINGS, &dv) < 0) {
+			LOG_PERROR("Failed to set DV-timings");
+			return -1;
+		}
+
+		if (_device_apply_resolution(dev, dv.bt.width, dv.bt.height) < 0) {
+			return -1;
+		}
+
+	} else {
+		LOG_DEBUG("Calling ioctl(VIDIOC_QUERYSTD) ...");
+		if (xioctl(RUN(fd), VIDIOC_QUERYSTD, &dev->standard) == 0) {
+			LOG_INFO("Applying the new VIDIOC_S_STD: %s ...", _standard_to_string(dev->standard));
+			if (xioctl(RUN(fd), VIDIOC_S_STD, &dev->standard) < 0) {
+				LOG_PERROR("Can't set video standard");
+				return -1;
+			}
+		}
+	}
+	return 0;
+}
+
+static int _device_open_format(device_s *dev, bool first) {
+	const unsigned stride = align_size(RUN(width), 32) << 1;
+
+	struct v4l2_format fmt = {0};
+	fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	fmt.fmt.pix.width = RUN(width);
+	fmt.fmt.pix.height = RUN(height);
+	fmt.fmt.pix.pixelformat = dev->format;
+	fmt.fmt.pix.field = V4L2_FIELD_ANY;
+	fmt.fmt.pix.bytesperline = stride;
+
+	// Set format
+	LOG_DEBUG("Probing device format=%s, stride=%u, resolution=%ux%u ...",
+		_format_to_string_supported(dev->format), stride, RUN(width), RUN(height));
+	if (xioctl(RUN(fd), VIDIOC_S_FMT, &fmt) < 0) {
+		LOG_PERROR("Can't set device format");
+		return -1;
+	}
+
+	// Check resolution
+	bool retry = false;
+	if (fmt.fmt.pix.width != RUN(width) || fmt.fmt.pix.height != RUN(height)) {
+		LOG_ERROR("Requested resolution=%ux%u is unavailable", RUN(width), RUN(height));
+		retry = true;
+	}
+	if (_device_apply_resolution(dev, fmt.fmt.pix.width, fmt.fmt.pix.height) < 0) {
+		return -1;
+	}
+	if (first && retry) {
+		return _device_open_format(dev, false);
+	}
+	LOG_INFO("Using resolution: %ux%u", RUN(width), RUN(height));
+
+	// Check format
+	if (fmt.fmt.pix.pixelformat != dev->format) {
+		LOG_ERROR("Could not obtain the requested format=%s; driver gave us %s",
+			_format_to_string_supported(dev->format),
+			_format_to_string_supported(fmt.fmt.pix.pixelformat));
+
+		char *format_str;
+		if ((format_str = (char *)_format_to_string_nullable(fmt.fmt.pix.pixelformat)) != NULL) {
+			LOG_INFO("Falling back to format=%s", format_str);
+		} else {
+			char fourcc_str[8];
+			LOG_ERROR("Unsupported format=%s (fourcc)",
+				fourcc_to_string(fmt.fmt.pix.pixelformat, fourcc_str, 8));
+			return -1;
+		}
+	}
+
+	RUN(format) = fmt.fmt.pix.pixelformat;
+	LOG_INFO("Using format: %s", _format_to_string_supported(RUN(format)));
+
+	RUN(stride) = fmt.fmt.pix.bytesperline;
+	RUN(raw_size) = fmt.fmt.pix.sizeimage; // Only for userptr
+	return 0;
+}
+
+static void _device_open_hw_fps(device_s *dev) {
+	RUN(hw_fps) = 0;
+
+	struct v4l2_streamparm setfps = {0};
+	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+	LOG_DEBUG("Querying HW FPS ...");
+	if (xioctl(RUN(fd), VIDIOC_G_PARM, &setfps) < 0) {
+		if (errno == ENOTTY) { // Quiet message for TC358743
+			LOG_INFO("Querying HW FPS changing is not supported");
+		} else {
+			LOG_PERROR("Can't query HW FPS changing");
+		}
+		return;
+	}
+
+	if (!(setfps.parm.capture.capability & V4L2_CAP_TIMEPERFRAME)) {
+		LOG_INFO("Changing HW FPS is not supported");
+		return;
+	}
+
+#	define SETFPS_TPF(_next) setfps.parm.capture.timeperframe._next
+
+	MEMSET_ZERO(setfps);
+	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	SETFPS_TPF(numerator) = 1;
+	SETFPS_TPF(denominator) = (dev->desired_fps == 0 ? 255 : dev->desired_fps);
+
+	if (xioctl(RUN(fd), VIDIOC_S_PARM, &setfps) < 0) {
+		LOG_PERROR("Can't set HW FPS");
+		return;
+	}
+
+	if (SETFPS_TPF(numerator) != 1) {
+		LOG_ERROR("Invalid HW FPS numerator: %u != 1", SETFPS_TPF(numerator));
+		return;
+	}
+
+	if (SETFPS_TPF(denominator) == 0) { // Не знаю, бывает ли так, но пускай на всякий случай
+		LOG_ERROR("Invalid HW FPS denominator: 0");
+		return;
+	}
+
+	RUN(hw_fps) = SETFPS_TPF(denominator);
+	if (dev->desired_fps != RUN(hw_fps)) {
+		LOG_INFO("Using HW FPS: %u -> %u (coerced)", dev->desired_fps, RUN(hw_fps));
+	} else {
+		LOG_INFO("Using HW FPS: %u", RUN(hw_fps));
+	}
+
+#	undef SETFPS_TPF
+}
+
+static void _device_open_jpeg_quality(device_s *dev) {
+	unsigned quality = 0;
+
+	if (is_jpeg(RUN(format))) {
+		struct v4l2_jpegcompression comp = {0};
+
+		if (xioctl(RUN(fd), VIDIOC_G_JPEGCOMP, &comp) < 0) {
+			LOG_ERROR("Device doesn't support setting of HW encoding quality parameters");
+		} else {
+			comp.quality = dev->jpeg_quality;
+			if (xioctl(RUN(fd), VIDIOC_S_JPEGCOMP, &comp) < 0) {
+				LOG_ERROR("Can't change MJPEG quality for JPEG source with HW pass-through encoder");
+			} else {
+				quality = dev->jpeg_quality;
+			}
+		}
+	}
+
+	RUN(jpeg_quality) = quality;
+}
+
+static int _device_open_io_method(device_s *dev) {
+	LOG_INFO("Using IO method: %s", _io_method_to_string_supported(dev->io_method));
+	switch (dev->io_method) {
+		case V4L2_MEMORY_MMAP: return _device_open_io_method_mmap(dev);
+		case V4L2_MEMORY_USERPTR: return _device_open_io_method_userptr(dev);
+		default: assert(0 && "Unsupported IO method");
+	}
+	return -1;
+}
+
+static int _device_open_io_method_mmap(device_s *dev) {
+	struct v4l2_requestbuffers req = {0};
+	req.count = dev->n_bufs;
+	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	req.memory = V4L2_MEMORY_MMAP;
+
+	LOG_DEBUG("Requesting %u device buffers for MMAP ...", req.count);
+	if (xioctl(RUN(fd), VIDIOC_REQBUFS, &req) < 0) {
+		LOG_PERROR("Device '%s' doesn't support MMAP method", dev->path);
+		return -1;
+	}
+
+	if (req.count < 1) {
+		LOG_ERROR("Insufficient buffer memory: %u", req.count);
+		return -1;
+	} else {
+		LOG_INFO("Requested %u device buffers, got %u", dev->n_bufs, req.count);
+	}
+
+	LOG_DEBUG("Allocating device buffers ...");
+
+	A_CALLOC(RUN(hw_bufs), req.count);
+	for (RUN(n_bufs) = 0; RUN(n_bufs) < req.count; ++RUN(n_bufs)) {
+		struct v4l2_buffer buf = {0};
+		buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		buf.memory = V4L2_MEMORY_MMAP;
+		buf.index = RUN(n_bufs);
+
+		LOG_DEBUG("Calling ioctl(VIDIOC_QUERYBUF) for device buffer=%u ...", RUN(n_bufs));
+		if (xioctl(RUN(fd), VIDIOC_QUERYBUF, &buf) < 0) {
+			LOG_PERROR("Can't VIDIOC_QUERYBUF");
+			return -1;
+		}
+
+#		define HW(_next) RUN(hw_bufs)[RUN(n_bufs)]._next
+
+		HW(dma_fd) = -1;
+
+		LOG_DEBUG("Mapping device buffer=%u ...", RUN(n_bufs));
+		if ((HW(raw.data) = mmap(
+			NULL,
+			buf.length,
+			PROT_READ | PROT_WRITE,
+			MAP_SHARED,
+			RUN(fd),
+			buf.m.offset
+		)) == MAP_FAILED) {
+			LOG_PERROR("Can't map device buffer=%u", RUN(n_bufs));
+			return -1;
+		}
+		HW(raw.allocated) = buf.length;
+
+#		undef HW
+	}
+	return 0;
+}
+
+static int _device_open_io_method_userptr(device_s *dev) {
+	struct v4l2_requestbuffers req = {0};
+	req.count = dev->n_bufs;
+	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	req.memory = V4L2_MEMORY_USERPTR;
+
+	LOG_DEBUG("Requesting %u device buffers for USERPTR ...", req.count);
+	if (xioctl(RUN(fd), VIDIOC_REQBUFS, &req) < 0) {
+		LOG_PERROR("Device '%s' doesn't support USERPTR method", dev->path);
+		return -1;
+	}
+
+	if (req.count < 1) {
+		LOG_ERROR("Insufficient buffer memory: %u", req.count);
+		return -1;
+	} else {
+		LOG_INFO("Requested %u device buffers, got %u", dev->n_bufs, req.count);
+	}
+
+	LOG_DEBUG("Allocating device buffers ...");
+
+	A_CALLOC(RUN(hw_bufs), req.count);
+
+	const unsigned page_size = getpagesize();
+	const unsigned buf_size = align_size(RUN(raw_size), page_size);
+
+	for (RUN(n_bufs) = 0; RUN(n_bufs) < req.count; ++RUN(n_bufs)) {
+#       define HW(_next) RUN(hw_bufs)[RUN(n_bufs)]._next
+		assert(HW(raw.data) = aligned_alloc(page_size, buf_size));
+		memset(HW(raw.data), 0, buf_size);
+		HW(raw.allocated) = buf_size;
+#		undef HW
+	}
+	return 0;
+}
+
+static int _device_open_queue_buffers(device_s *dev) {
+	for (unsigned index = 0; index < RUN(n_bufs); ++index) {
+		struct v4l2_buffer buf = {0};
+		buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		buf.memory = dev->io_method;
+		buf.index = index;
+		if (dev->io_method == V4L2_MEMORY_USERPTR) {
+			buf.m.userptr = (unsigned long)RUN(hw_bufs)[index].raw.data;
+			buf.length = RUN(hw_bufs)[index].raw.allocated;
+		}
+
+		LOG_DEBUG("Calling ioctl(VIDIOC_QBUF) for buffer=%u ...", index);
+		if (xioctl(RUN(fd), VIDIOC_QBUF, &buf) < 0) {
+			LOG_PERROR("Can't VIDIOC_QBUF");
+			return -1;
+		}
+	}
+	return 0;
+}
+
+static int _device_apply_resolution(device_s *dev, unsigned width, unsigned height) {
+	// Тут VIDEO_MIN_* не используются из-за странностей минимального разрешения при отсутствии сигнала
+	// у некоторых устройств, например TC358743
+	if (
+		width == 0 || width > VIDEO_MAX_WIDTH
+		|| height == 0 || height > VIDEO_MAX_HEIGHT
+	) {
+		LOG_ERROR("Requested forbidden resolution=%ux%u: min=1x1, max=%ux%u",
+			width, height, VIDEO_MAX_WIDTH, VIDEO_MAX_HEIGHT);
+		return -1;
+	}
+	RUN(width) = width;
+	RUN(height) = height;
+	return 0;
+}
+
+static void _device_apply_controls(device_s *dev) {
+#	define SET_CID_VALUE(_cid, _field, _value, _quiet) { \
+			struct v4l2_queryctrl query; \
+			if (_device_query_control(dev, &query, #_field, _cid, _quiet) == 0) { \
+				_device_set_control(dev, &query, #_field, _cid, _value, _quiet); \
+			} \
+		}
+
+#	define SET_CID_DEFAULT(_cid, _field, _quiet) { \
+			struct v4l2_queryctrl query; \
+			if (_device_query_control(dev, &query, #_field, _cid, _quiet) == 0) { \
+				_device_set_control(dev, &query, #_field, _cid, query.default_value, _quiet); \
+			} \
+		}
+
+#	define CONTROL_MANUAL_CID(_cid, _field) { \
+			if (dev->ctl._field.mode == CTL_MODE_VALUE) { \
+				SET_CID_VALUE(_cid, _field, dev->ctl._field.value, false); \
+			} else if (dev->ctl._field.mode == CTL_MODE_DEFAULT) { \
+				SET_CID_DEFAULT(_cid, _field, false); \
+			} \
+		}
+
+#	define CONTROL_AUTO_CID(_cid_auto, _cid_manual, _field) { \
+			if (dev->ctl._field.mode == CTL_MODE_VALUE) { \
+				SET_CID_VALUE(_cid_auto, _field##_auto, 0, true); \
+				SET_CID_VALUE(_cid_manual, _field, dev->ctl._field.value, false); \
+			} else if (dev->ctl._field.mode == CTL_MODE_AUTO) { \
+				SET_CID_VALUE(_cid_auto, _field##_auto, 1, false); \
+			} else if (dev->ctl._field.mode == CTL_MODE_DEFAULT) { \
+				SET_CID_VALUE(_cid_auto, _field##_auto, 0, true); /* Reset inactive flag */ \
+				SET_CID_DEFAULT(_cid_manual, _field, false); \
+				SET_CID_DEFAULT(_cid_auto, _field##_auto, false); \
+			} \
+		}
+
+	CONTROL_AUTO_CID	(V4L2_CID_AUTOBRIGHTNESS,		V4L2_CID_BRIGHTNESS,				brightness);
+	CONTROL_MANUAL_CID	(								V4L2_CID_CONTRAST,					contrast);
+	CONTROL_MANUAL_CID	(								V4L2_CID_SATURATION,				saturation);
+	CONTROL_AUTO_CID	(V4L2_CID_HUE_AUTO,				V4L2_CID_HUE,						hue);
+	CONTROL_MANUAL_CID	(								V4L2_CID_GAMMA,						gamma);
+	CONTROL_MANUAL_CID	(								V4L2_CID_SHARPNESS,					sharpness);
+	CONTROL_MANUAL_CID	(								V4L2_CID_BACKLIGHT_COMPENSATION,	backlight_compensation);
+	CONTROL_AUTO_CID	(V4L2_CID_AUTO_WHITE_BALANCE,	V4L2_CID_WHITE_BALANCE_TEMPERATURE,	white_balance);
+	CONTROL_AUTO_CID	(V4L2_CID_AUTOGAIN,				V4L2_CID_GAIN,						gain);
+	CONTROL_MANUAL_CID	(								V4L2_CID_COLORFX,					color_effect);
+	CONTROL_MANUAL_CID	(								V4L2_CID_ROTATE,	   				rotate);
+	CONTROL_MANUAL_CID	(								V4L2_CID_VFLIP,						flip_vertical);
+	CONTROL_MANUAL_CID	(								V4L2_CID_HFLIP,						flip_horizontal);
+
+#	undef CONTROL_AUTO_CID
+#	undef CONTROL_MANUAL_CID
+#	undef SET_CID_DEFAULT
+#	undef SET_CID_VALUE
+}
+
+static int _device_query_control(
+	device_s *dev, struct v4l2_queryctrl *query,
+	const char *name, unsigned cid, bool quiet) {
+
+	// cppcheck-suppress redundantPointerOp
+	MEMSET_ZERO(*query);
+	query->id = cid;
+
+	if (xioctl(RUN(fd), VIDIOC_QUERYCTRL, query) < 0 || query->flags & V4L2_CTRL_FLAG_DISABLED) {
+		if (!quiet) {
+			LOG_ERROR("Changing control %s is unsupported", name);
+		}
+		return -1;
+	}
+	return 0;
+}
+
+static void _device_set_control(
+	device_s *dev, struct v4l2_queryctrl *query,
+	const char *name, unsigned cid, int value, bool quiet) {
+
+	if (value < query->minimum || value > query->maximum || value % query->step != 0) {
+		if (!quiet) {
+			LOG_ERROR("Invalid value %d of control %s: min=%d, max=%d, default=%d, step=%u",
+				value, name, query->minimum, query->maximum, query->default_value, query->step);
+		}
+		return;
+	}
+
+	struct v4l2_control ctl = {0};
+	ctl.id = cid;
+	ctl.value = value;
+
+	if (xioctl(RUN(fd), VIDIOC_S_CTRL, &ctl) < 0) {
+		if (!quiet) {
+			LOG_PERROR("Can't set control %s", name);
+		}
+	} else if (!quiet) {
+		LOG_INFO("Applying control %s: %d", name, ctl.value);
+	}
+}
+
+static const char *_format_to_string_nullable(unsigned format) {
+	for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
+		if (format == _FORMATS[index].format) {
+			return _FORMATS[index].name;
+		}
+	}
+	return NULL;
+}
+
+static const char *_format_to_string_supported(unsigned format) {
+	const char *format_str = _format_to_string_nullable(format);
+	return (format_str == NULL ? "unsupported" : format_str);
+}
+
+static const char *_standard_to_string(v4l2_std_id standard) {
+	for (unsigned index = 0; index < ARRAY_LEN(_STANDARDS); ++index) {
+		if (standard == _STANDARDS[index].standard) {
+			return _STANDARDS[index].name;
+		}
+	}
+	return _STANDARDS[0].name;
+}
+
+static const char *_io_method_to_string_supported(enum v4l2_memory io_method) {
+	for (unsigned index = 0; index < ARRAY_LEN(_IO_METHODS); ++index) {
+		if (io_method == _IO_METHODS[index].io_method) {
+			return _IO_METHODS[index].name;
+		}
+	}
+	return "unsupported";
+}
+
+#	undef RUN

src/ustreamer/device.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,13 +22,31 @@
 
 #pragma once
 
+#include <stdlib.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdbool.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <sys/select.h>
+#include <sys/mman.h>
+#include <sys/time.h>
 
 #include <pthread.h>
 #include <linux/videodev2.h>
+#include <linux/v4l2-controls.h>
 
-#include "picture.h"
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/threading.h"
+#include "../libs/frame.h"
+
+#include "xioctl.h"
 
 
 #define VIDEO_MIN_WIDTH		((unsigned)160)
@@ -43,98 +61,97 @@
 #define STANDARDS_STR		"PAL, NTSC, SECAM"
 
 #define FORMAT_UNKNOWN	-1
-#define FORMATS_STR		"YUYV, UYVY, RGB565, RGB24, JPEG"
+#define FORMATS_STR		"YUYV, UYVY, RGB565, RGB24, MJPEG, JPEG"
 
 #define IO_METHOD_UNKNOWN	-1
 #define IO_METHODS_STR		"MMAP, USERPTR"
 
 
-struct hw_buffer_t {
-	unsigned char		*data;
-	size_t				used;
-	size_t				allocated;
-	struct v4l2_buffer	buf_info;
+typedef struct {
+	frame_s				raw;
+	struct v4l2_buffer	buf;
+	int					dma_fd;
+	bool				grabbed;
+} hw_buffer_s;
 
-	pthread_mutex_t grabbed_mutex;
-	bool			grabbed;
-};
+typedef struct {
+	int			fd;
+	unsigned	width;
+	unsigned	height;
+	unsigned	format;
+	unsigned	stride;
+	unsigned	hw_fps;
+	unsigned	jpeg_quality;
+	size_t		raw_size;
+	unsigned	n_bufs;
+	hw_buffer_s	*hw_bufs;
+	bool		capturing;
+	bool		persistent_timeout_reported;
+} device_runtime_s;
 
-struct device_runtime_t {
-	int					fd;
-	unsigned			width;
-	unsigned			height;
-	unsigned			format;
-	unsigned			hw_fps;
-	size_t				raw_size;
-	unsigned			n_buffers;
-	unsigned			n_workers;
-	struct hw_buffer_t	*hw_buffers;
-	struct picture_t	**pictures;
-	bool				capturing;
-};
-
-enum control_mode_t {
+typedef enum {
 	CTL_MODE_NONE = 0,
 	CTL_MODE_VALUE,
 	CTL_MODE_AUTO,
 	CTL_MODE_DEFAULT,
-};
+} control_mode_e;
 
-struct control_t {
-	enum control_mode_t	mode;
-	int					value;
-};
+typedef struct {
+	control_mode_e	mode;
+	int				value;
+} control_s;
 
-struct controls_t {
-	struct control_t brightness;
-	struct control_t contrast;
-	struct control_t saturation;
-	struct control_t hue;
-	struct control_t gamma;
-	struct control_t sharpness;
-	struct control_t backlight_compensation;
-	struct control_t white_balance;
-	struct control_t gain;
-	struct control_t color_effect;
-	struct control_t flip_vertical;
-	struct control_t flip_horizontal;
-};
+typedef struct {
+	control_s brightness;
+	control_s contrast;
+	control_s saturation;
+	control_s hue;
+	control_s gamma;
+	control_s sharpness;
+	control_s backlight_compensation;
+	control_s white_balance;
+	control_s gain;
+	control_s color_effect;
+	control_s rotate;
+	control_s flip_vertical;
+	control_s flip_horizontal;
+} controls_s;
 
-struct device_t {
-	char			*path;
-	unsigned		input;
-	unsigned		width;
-	unsigned		height;
-	unsigned		format;
-	v4l2_std_id		standard;
+typedef struct {
+	char				*path;
+	unsigned			input;
+	unsigned			width;
+	unsigned			height;
+	unsigned			format;
+	unsigned			jpeg_quality;
+	v4l2_std_id			standard;
 	enum v4l2_memory	io_method;
-	bool			dv_timings;
-	unsigned		n_buffers;
-	unsigned		n_workers;
-	unsigned		desired_fps;
-	size_t			min_frame_size;
-	bool			persistent;
-	unsigned		timeout;
-	unsigned		error_delay;
+	bool				dv_timings;
+	unsigned			n_bufs;
+	unsigned			desired_fps;
+	size_t				min_frame_size;
+	bool				persistent;
+	unsigned			timeout;
 
-	struct controls_t ctl;
+	controls_s ctl;
 
-	struct device_runtime_t *run;
-};
+	device_runtime_s *run;
+} device_s;
 
 
-struct device_t *device_init(void);
-void device_destroy(struct device_t *dev);
+device_s *device_init(void);
+void device_destroy(device_s *dev);
 
 int device_parse_format(const char *str);
 v4l2_std_id device_parse_standard(const char *str);
 int device_parse_io_method(const char *str);
 
-int device_open(struct device_t *dev);
-void device_close(struct device_t *dev);
+int device_open(device_s *dev);
+void device_close(device_s *dev);
 
-int device_switch_capturing(struct device_t *dev, bool enable);
-int device_select(struct device_t *dev, bool *has_read, bool *has_write, bool *has_error);
-int device_grab_buffer(struct device_t *dev);
-int device_release_buffer(struct device_t *dev, unsigned index);
-int device_consume_event(struct device_t *dev);
+int device_export_to_dma(device_s *dev);
+int device_switch_capturing(device_s *dev, bool enable);
+int device_select(device_s *dev, bool *has_read, bool *has_write, bool *has_error);
+int device_grab_buffer(device_s *dev, hw_buffer_s **hw);
+int device_release_buffer(device_s *dev, hw_buffer_s *hw);
+int device_consume_event(device_s *dev);

src/ustreamer/encoder.c

@@ -0,0 +1,248 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "encoder.h"
+
+
+static const struct {
+	const char *name;
+	const encoder_type_e type;
+} _ENCODER_TYPES[] = {
+	{"CPU",			ENCODER_TYPE_CPU},
+	{"HW",			ENCODER_TYPE_HW},
+	{"M2M-VIDEO",	ENCODER_TYPE_M2M_VIDEO},
+	{"M2M-IMAGE",	ENCODER_TYPE_M2M_IMAGE},
+	{"M2M-MJPEG",	ENCODER_TYPE_M2M_VIDEO},
+	{"M2M-JPEG",	ENCODER_TYPE_M2M_IMAGE},
+	{"OMX",			ENCODER_TYPE_M2M_IMAGE},
+	{"NOOP",		ENCODER_TYPE_NOOP},
+};
+
+
+static void *_worker_job_init(void *v_enc);
+static void _worker_job_destroy(void *v_job);
+static bool _worker_run_job(worker_s *wr);
+
+
+#define ER(_next)	enc->run->_next
+
+
+encoder_s *encoder_init(void) {
+	encoder_runtime_s *run;
+	A_CALLOC(run, 1);
+	run->type = ENCODER_TYPE_CPU;
+	run->quality = 80;
+	A_MUTEX_INIT(&run->mutex);
+
+	encoder_s *enc;
+	A_CALLOC(enc, 1);
+	enc->type = run->type;
+	enc->n_workers = get_cores_available();
+	enc->run = run;
+	return enc;
+}
+
+void encoder_destroy(encoder_s *enc) {
+	if (ER(m2ms)) {
+		for (unsigned index = 0; index < ER(n_m2ms); ++index) {
+			if (ER(m2ms[index])) {
+				m2m_encoder_destroy(ER(m2ms[index]));
+			}
+		}
+		free(ER(m2ms));
+	}
+	A_MUTEX_DESTROY(&ER(mutex));
+	free(enc->run);
+	free(enc);
+}
+
+encoder_type_e encoder_parse_type(const char *str) {
+	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
+		if (!strcasecmp(str, _ENCODER_TYPES[index].name)) {
+			return _ENCODER_TYPES[index].type;
+		}
+	}
+	return ENCODER_TYPE_UNKNOWN;
+}
+
+const char *encoder_type_to_string(encoder_type_e type) {
+	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
+		if (_ENCODER_TYPES[index].type == type) {
+			return _ENCODER_TYPES[index].name;
+		}
+	}
+	return _ENCODER_TYPES[0].name;
+}
+
+workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev) {
+#	define DR(_next) dev->run->_next
+
+	encoder_type_e type = (ER(cpu_forced) ? ENCODER_TYPE_CPU : enc->type);
+	unsigned quality = dev->jpeg_quality;
+	unsigned n_workers = min_u(enc->n_workers, DR(n_bufs));
+	bool cpu_forced = false;
+
+	if (is_jpeg(DR(format)) && type != ENCODER_TYPE_HW) {
+		LOG_INFO("Switching to HW encoder: the input is (M)JPEG ...");
+		type = ENCODER_TYPE_HW;
+	}
+
+	if (type == ENCODER_TYPE_HW) {
+		if (!is_jpeg(DR(format))) {
+			LOG_INFO("Switching to CPU encoder: the input format is not (M)JPEG ...");
+			goto use_cpu;
+		}
+		quality = DR(jpeg_quality);
+		n_workers = 1;
+
+	} else if (type == ENCODER_TYPE_M2M_VIDEO || type == ENCODER_TYPE_M2M_IMAGE) {
+		LOG_DEBUG("Preparing M2M-%s encoder ...", (type == ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"));
+		if (ER(m2ms) == NULL) {
+			A_CALLOC(ER(m2ms), n_workers);
+		}
+		for (; ER(n_m2ms) < n_workers; ++ER(n_m2ms)) {
+			// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
+			char name[32];
+			snprintf(name, 32, "JPEG-%u", ER(n_m2ms));
+			if (type == ENCODER_TYPE_M2M_VIDEO) {
+				ER(m2ms[ER(n_m2ms)]) = m2m_mjpeg_encoder_init(name, enc->m2m_path, quality);
+			} else {
+				ER(m2ms[ER(n_m2ms)]) = m2m_jpeg_encoder_init(name, enc->m2m_path, quality);
+			}
+		}
+
+	} else if (type == ENCODER_TYPE_NOOP) {
+		n_workers = 1;
+		quality = 0;
+	}
+
+	goto ok;
+
+	use_cpu:
+		type = ENCODER_TYPE_CPU;
+		quality = dev->jpeg_quality;
+
+	ok:
+		if (type == ENCODER_TYPE_NOOP) {
+			LOG_INFO("Using JPEG NOOP encoder");
+		} else if (quality == 0) {
+			LOG_INFO("Using JPEG quality: encoder default");
+		} else {
+			LOG_INFO("Using JPEG quality: %u%%", quality);
+		}
+
+		A_MUTEX_LOCK(&ER(mutex));
+		ER(type) = type;
+		ER(quality) = quality;
+		if (cpu_forced) {
+			ER(cpu_forced) = true;
+		}
+		A_MUTEX_UNLOCK(&ER(mutex));
+
+		long double desired_interval = 0;
+		if (dev->desired_fps > 0 && (dev->desired_fps < dev->run->hw_fps || dev->run->hw_fps == 0)) {
+			desired_interval = (long double)1 / dev->desired_fps;
+		}
+
+		return workers_pool_init(
+			"JPEG", "jw", n_workers, desired_interval,
+			_worker_job_init, (void *)enc,
+			_worker_job_destroy,
+			_worker_run_job);
+
+#	undef DR
+}
+
+void encoder_get_runtime_params(encoder_s *enc, encoder_type_e *type, unsigned *quality) {
+	A_MUTEX_LOCK(&ER(mutex));
+	*type = ER(type);
+	*quality = ER(quality);
+	A_MUTEX_UNLOCK(&ER(mutex));
+}
+
+static void *_worker_job_init(void *v_enc) {
+	encoder_job_s *job;
+	A_CALLOC(job, 1);
+	job->enc = (encoder_s *)v_enc;
+	job->dest = frame_init();
+	return (void *)job;
+}
+
+static void _worker_job_destroy(void *v_job) {
+	encoder_job_s *job = (encoder_job_s *)v_job;
+	frame_destroy(job->dest);
+	free(job);
+}
+
+#undef ER
+
+static bool _worker_run_job(worker_s *wr) {
+	encoder_job_s *job = (encoder_job_s *)wr->job;
+	frame_s *src = &job->hw->raw;
+	frame_s *dest = job->dest;
+
+#	define ER(_next) job->enc->run->_next
+
+	assert(ER(type) != ENCODER_TYPE_UNKNOWN);
+
+	if (ER(type) == ENCODER_TYPE_CPU) {
+		LOG_VERBOSE("Compressing JPEG using CPU: worker=%s, buffer=%u",
+			wr->name, job->hw->buf.index);
+		cpu_encoder_compress(src, dest, ER(quality));
+
+	} else if (ER(type) == ENCODER_TYPE_HW) {
+		LOG_VERBOSE("Compressing JPEG using HW (just copying): worker=%s, buffer=%u",
+			wr->name, job->hw->buf.index);
+		hw_encoder_compress(src, dest);
+
+	} else if (ER(type) == ENCODER_TYPE_M2M_VIDEO || ER(type) == ENCODER_TYPE_M2M_IMAGE) {
+		LOG_VERBOSE("Compressing JPEG using M2M-%s: worker=%s, buffer=%u",
+			(ER(type) == ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"), wr->name, job->hw->buf.index);
+		if (m2m_encoder_compress(ER(m2ms[wr->number]), src, dest, false) < 0) {
+			goto error;
+		}
+
+	} else if (ER(type) == ENCODER_TYPE_NOOP) {
+		LOG_VERBOSE("Compressing JPEG using NOOP (do nothing): worker=%s, buffer=%u",
+			wr->name, job->hw->buf.index);
+		usleep(5000); // Просто чтобы работала логика desired_fps
+		dest->encode_end_ts = get_now_monotonic();
+	}
+
+	LOG_VERBOSE("Compressed new JPEG: size=%zu, time=%0.3Lf, worker=%s, buffer=%u",
+		job->dest->used,
+		job->dest->encode_end_ts - job->dest->encode_begin_ts,
+		wr->name,
+		job->hw->buf.index);
+
+	return true;
+
+	error:
+		LOG_ERROR("Compression failed: worker=%s, buffer=%u", wr->name, job->hw->buf.index);
+		LOG_ERROR("Error while compressing buffer, falling back to CPU");
+		A_MUTEX_LOCK(&ER(mutex));
+		ER(cpu_forced) = true;
+		A_MUTEX_UNLOCK(&ER(mutex));
+		return false;
+
+#	undef ER
+}

src/ustreamer/encoder.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,68 +22,70 @@
 
 #pragma once
 
+#include <stdlib.h>
 #include <stdbool.h>
+#include <strings.h>
+#include <assert.h>
 
 #include <pthread.h>
+#include <linux/videodev2.h>
+
+#include "../libs/tools.h"
+#include "../libs/threading.h"
+#include "../libs/logging.h"
+#include "../libs/frame.h"
 
 #include "device.h"
+#include "workers.h"
+#include "m2m.h"
 
-#ifdef WITH_OMX
-#	include "encoders/omx/encoder.h"
-
-#	define ENCODER_TYPES_OMX_HINT ", OMX"
-
-#	ifndef CFG_MAX_GLITCHED_RESOLUTIONS
-#		define CFG_MAX_GLITCHED_RESOLUTIONS 1024
-#	endif
-#	define MAX_GLITCHED_RESOLUTIONS ((unsigned)(CFG_MAX_GLITCHED_RESOLUTIONS))
-#else
-#	define ENCODER_TYPES_OMX_HINT ""
-#endif
+#include "encoders/cpu/encoder.h"
+#include "encoders/hw/encoder.h"
 
 
-#define ENCODER_TYPES_STR \
-	"CPU, HW" \
-	ENCODER_TYPES_OMX_HINT
+#define ENCODER_TYPES_STR "CPU, HW, M2M-VIDEO, M2M-IMAGE, NOOP"
 
-enum encoder_type_t {
+typedef enum {
 	ENCODER_TYPE_UNKNOWN, // Only for encoder_parse_type() and main()
 	ENCODER_TYPE_CPU,
 	ENCODER_TYPE_HW,
-#	ifdef WITH_OMX
-	ENCODER_TYPE_OMX,
-#	endif
-};
+	ENCODER_TYPE_M2M_VIDEO,
+	ENCODER_TYPE_M2M_IMAGE,
+	ENCODER_TYPE_NOOP,
+} encoder_type_e;
 
-struct encoder_runtime_t {
-	enum encoder_type_t	type;
-	unsigned			quality;
-	bool				cpu_forced;
-	pthread_mutex_t		mutex;
+typedef struct {
+	encoder_type_e	type;
+	unsigned		quality;
+	bool			cpu_forced;
+	pthread_mutex_t	mutex;
 
-#	ifdef WITH_OMX
-	unsigned				n_omxs;
-	struct omx_encoder_t	**omxs;
-#	endif
-};
+	unsigned		n_m2ms;
+	m2m_encoder_s	**m2ms;
+} encoder_runtime_s;
 
-struct encoder_t {
-	enum encoder_type_t	type;
-	unsigned			quality;
-#	ifdef WITH_OMX
-	unsigned	n_glitched_resolutions;
-	unsigned	glitched_resolutions[2][MAX_GLITCHED_RESOLUTIONS];
-#	endif
+typedef struct {
+	encoder_type_e	type;
+	unsigned		n_workers;
+	char			*m2m_path;
 
-	struct encoder_runtime_t *run;
-};
+	encoder_runtime_s *run;
+} encoder_s;
+
+typedef struct {
+	encoder_s	*enc;
+	hw_buffer_s	*hw;
+	frame_s		*dest;
+} encoder_job_s;
 
 
-struct encoder_t *encoder_init(void);
-void encoder_destroy(struct encoder_t *encoder);
+encoder_s *encoder_init(void);
+void encoder_destroy(encoder_s *enc);
 
-enum encoder_type_t encoder_parse_type(const char *str);
-const char *encoder_type_to_string(enum encoder_type_t type);
+encoder_type_e encoder_parse_type(const char *str);
+const char *encoder_type_to_string(encoder_type_e type);
 
-void encoder_prepare(struct encoder_t *encoder, struct device_t *dev);
-int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev, unsigned worker_number, unsigned buf_index);
+workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev);
+void encoder_get_runtime_params(encoder_s *enc, encoder_type_e *type, unsigned *quality);
+
+int encoder_compress(encoder_s *enc, unsigned worker_number, frame_s *src, frame_s *dest);

src/ustreamer/encoders/cpu/encoder.c

@@ -1,13 +1,13 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
 #    This source file based on code of MJPG-Streamer.                        #
 #                                                                            #
 #    Copyright (C) 2005-2006  Laurent Pinchart & Michel Xhaard               #
 #    Copyright (C) 2006  Gabriel A. Devenyi                                  #
 #    Copyright (C) 2007  Tom Stöveken                                        #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -27,62 +27,41 @@
 
 #include "encoder.h"
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
 
-#include <jpeglib.h>
-
-#include <linux/videodev2.h>
-
-#include "../../tools.h"
-#include "../../picture.h"
-#include "../../device.h"
+typedef struct {
+	struct	jpeg_destination_mgr mgr; // Default manager
+	JOCTET	*buf; // Start of buffer
+	frame_s	*frame;
+} _jpeg_dest_manager_s;
 
 
-struct _jpeg_dest_manager_t {
-	struct				jpeg_destination_mgr mgr; // Default manager
-	JOCTET				*buffer; // Start of buffer
-	struct picture_t	*picture;
-};
+static void _jpeg_set_dest_frame(j_compress_ptr jpeg, frame_s *frame);
 
-
-static void _jpeg_set_picture(j_compress_ptr jpeg, struct picture_t *picture);
-
-static void _jpeg_write_scanlines_yuyv(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height);
-
-static void _jpeg_write_scanlines_uyvy(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height);
-
-static void _jpeg_write_scanlines_rgb565(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height);
-
-static void _jpeg_write_scanlines_rgb24(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height);
+static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg, const frame_s *frame);
+static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const frame_s *frame);
+static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const frame_s *frame);
+static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const frame_s *frame);
 
 static void _jpeg_init_destination(j_compress_ptr jpeg);
 static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg);
 static void _jpeg_term_destination(j_compress_ptr jpeg);
 
 
-void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned quality) {
+void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality) {
 	// This function based on compress_image_to_jpeg() from mjpg-streamer
 
+	frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
+
 	struct jpeg_compress_struct jpeg;
 	struct jpeg_error_mgr jpeg_error;
 
 	jpeg.err = jpeg_std_error(&jpeg_error);
 	jpeg_create_compress(&jpeg);
 
-	_jpeg_set_picture(&jpeg, dev->run->pictures[index]);
+	_jpeg_set_dest_frame(&jpeg, dest);
 
-	jpeg.image_width = dev->run->width;
-	jpeg.image_height = dev->run->height;
+	jpeg.image_width = src->width;
+	jpeg.image_height = src->height;
 	jpeg.input_components = 3;
 	jpeg.in_color_space = JCS_RGB;
 
@@ -92,9 +71,9 @@ void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned
 	jpeg_start_compress(&jpeg, TRUE);
 
 #	define WRITE_SCANLINES(_format, _func) \
-		case _format: { _func(&jpeg, dev->run->hw_buffers[index].data, dev->run->width, dev->run->height); break; }
+		case _format: { _func(&jpeg, src); break; }
 
-	switch (dev->run->format) {
+	switch (src->format) {
 		// https://www.fourcc.org/yuv.php
 		WRITE_SCANLINES(V4L2_PIX_FMT_YUYV, _jpeg_write_scanlines_yuyv);
 		WRITE_SCANLINES(V4L2_PIX_FMT_UYVY, _jpeg_write_scanlines_uyvy);
@@ -108,25 +87,23 @@ void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned
 	jpeg_finish_compress(&jpeg);
 	jpeg_destroy_compress(&jpeg);
 
-	assert(dev->run->pictures[index]->used > 0);
+	frame_encoding_end(dest);
 }
 
-static void _jpeg_set_picture(j_compress_ptr jpeg, struct picture_t *picture) {
-	struct _jpeg_dest_manager_t *dest;
-
+static void _jpeg_set_dest_frame(j_compress_ptr jpeg, frame_s *frame) {
 	if (jpeg->dest == NULL) {
 		assert((jpeg->dest = (struct jpeg_destination_mgr *)(*jpeg->mem->alloc_small)(
-			(j_common_ptr) jpeg, JPOOL_PERMANENT, sizeof(struct _jpeg_dest_manager_t)
+			(j_common_ptr) jpeg, JPOOL_PERMANENT, sizeof(_jpeg_dest_manager_s)
 		)));
 	}
 
-	dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
+	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
 	dest->mgr.init_destination = _jpeg_init_destination;
 	dest->mgr.empty_output_buffer = _jpeg_empty_output_buffer;
 	dest->mgr.term_destination = _jpeg_term_destination;
-	dest->picture = picture;
+	dest->frame = frame;
 
-	picture->used = 0;
+	frame->used = 0;
 }
 
 #define YUV_R(_y, _, _v)	(((_y) + (359 * (_v))) >> 8)
@@ -134,20 +111,18 @@ static void _jpeg_set_picture(j_compress_ptr jpeg, struct picture_t *picture) {
 #define YUV_B(_y, _u, _)	(((_y) + (454 * (_u))) >> 8)
 #define NORM_COMPONENT(_x)	(((_x) > 255) ? 255 : (((_x) < 0) ? 0 : (_x)))
 
-static void _jpeg_write_scanlines_yuyv(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height) {
+static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg, const frame_s *frame) {
+	uint8_t *line_buf;
+	A_CALLOC(line_buf, frame->width * 3);
 
-	unsigned char *line_buffer;
-	JSAMPROW scanlines[1];
+	const unsigned padding = frame_get_padding(frame);
+	const uint8_t *data = frame->data;
 	unsigned z = 0;
 
-	A_CALLOC(line_buffer, width * 3);
+	while (jpeg->next_scanline < frame->height) {
+		uint8_t *ptr = line_buf;
 
-	while (jpeg->next_scanline < height) {
-		unsigned char *ptr = line_buffer;
-
-		for (unsigned x = 0; x < width; ++x) {
+		for (unsigned x = 0; x < frame->width; ++x) {
 			int y = (!z ? data[0] << 8 : data[2] << 8);
 			int u = data[1] - 128;
 			int v = data[3] - 128;
@@ -165,28 +140,27 @@ static void _jpeg_write_scanlines_yuyv(
 				data += 4;
 			}
 		}
+		data += padding;
 
-		scanlines[0] = line_buffer;
+		JSAMPROW scanlines[1] = {line_buf};
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 	}
 
-	free(line_buffer);
+	free(line_buf);
 }
 
-static void _jpeg_write_scanlines_uyvy(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height) {
+static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const frame_s *frame) {
+	uint8_t *line_buf;
+	A_CALLOC(line_buf, frame->width * 3);
 
-	unsigned char *line_buffer;
-	JSAMPROW scanlines[1];
+	const unsigned padding = frame_get_padding(frame);
+	const uint8_t *data = frame->data;
 	unsigned z = 0;
 
-	A_CALLOC(line_buffer, width * 3);
+	while (jpeg->next_scanline < frame->height) {
+		uint8_t *ptr = line_buf;
 
-	while (jpeg->next_scanline < height) {
-		unsigned char *ptr = line_buffer;
-
-		for(unsigned x = 0; x < width; ++x) {
+		for (unsigned x = 0; x < frame->width; ++x) {
 			int y = (!z ? data[1] << 8 : data[3] << 8);
 			int u = data[0] - 128;
 			int v = data[2] - 128;
@@ -204,12 +178,13 @@ static void _jpeg_write_scanlines_uyvy(
 				data += 4;
 			}
 		}
+		data += padding;
 
-		scanlines[0] = line_buffer;
+		JSAMPROW scanlines[1] = {line_buf};
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 	}
 
-	free(line_buffer);
+	free(line_buf);
 }
 
 #undef NORM_COMPONENT
@@ -217,69 +192,68 @@ static void _jpeg_write_scanlines_uyvy(
 #undef YUV_G
 #undef YUV_R
 
-static void _jpeg_write_scanlines_rgb565(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height) {
+static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const frame_s *frame) {
+	uint8_t *line_buf;
+	A_CALLOC(line_buf, frame->width * 3);
 
-	unsigned char *line_buffer;
-	JSAMPROW scanlines[1];
+	const unsigned padding = frame_get_padding(frame);
+	const uint8_t *data = frame->data;
 
-	A_CALLOC(line_buffer, width * 3);
+	while (jpeg->next_scanline < frame->height) {
+		uint8_t *ptr = line_buf;
 
-	while (jpeg->next_scanline < height) {
-		unsigned char *ptr = line_buffer;
-
-		for(unsigned x = 0; x < width; ++x) {
+		for (unsigned x = 0; x < frame->width; ++x) {
 			unsigned int two_byte = (data[1] << 8) + data[0];
 
 			*(ptr++) = data[1] & 248; // Red
-			*(ptr++) = (unsigned char)((two_byte & 2016) >> 3); // Green
+			*(ptr++) = (uint8_t)((two_byte & 2016) >> 3); // Green
 			*(ptr++) = (data[0] & 31) * 8; // Blue
 
 			data += 2;
 		}
+		data += padding;
 
-		scanlines[0] = line_buffer;
+		JSAMPROW scanlines[1] = {line_buf};
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 	}
 
-	free(line_buffer);
+	free(line_buf);
 }
 
-static void _jpeg_write_scanlines_rgb24(
-	struct jpeg_compress_struct *jpeg, const unsigned char *data,
-	unsigned width, unsigned height) {
+static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const frame_s *frame) {
+	const unsigned padding = frame_get_padding(frame);
+	uint8_t *data = frame->data;
 
-	JSAMPROW scanlines[1];
-
-	while (jpeg->next_scanline < height) {
-		scanlines[0] = (unsigned char *)(data + jpeg->next_scanline * width * 3);
+	while (jpeg->next_scanline < frame->height) {
+		JSAMPROW scanlines[1] = {data};
 		jpeg_write_scanlines(jpeg, scanlines, 1);
+
+		data += (jpeg->next_scanline * frame->width * 3) + padding;
 	}
 }
 
 #define JPEG_OUTPUT_BUFFER_SIZE ((size_t)4096)
 
 static void _jpeg_init_destination(j_compress_ptr jpeg) {
-	struct _jpeg_dest_manager_t *dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
+	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
 
 	// Allocate the output buffer - it will be released when done with image
-	assert((dest->buffer = (JOCTET *)(*jpeg->mem->alloc_small)(
+	assert((dest->buf = (JOCTET *)(*jpeg->mem->alloc_small)(
 		(j_common_ptr) jpeg, JPOOL_IMAGE, JPEG_OUTPUT_BUFFER_SIZE * sizeof(JOCTET)
 	)));
 
-	dest->mgr.next_output_byte = dest->buffer;
+	dest->mgr.next_output_byte = dest->buf;
 	dest->mgr.free_in_buffer = JPEG_OUTPUT_BUFFER_SIZE;
 }
 
 static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg) {
 	// Called whenever local jpeg buffer fills up
 
-	struct _jpeg_dest_manager_t *dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
+	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
 
-	picture_append_data(dest->picture, dest->buffer, JPEG_OUTPUT_BUFFER_SIZE);
+	frame_append_data(dest->frame, dest->buf, JPEG_OUTPUT_BUFFER_SIZE);
 
-	dest->mgr.next_output_byte = dest->buffer;
+	dest->mgr.next_output_byte = dest->buf;
 	dest->mgr.free_in_buffer = JPEG_OUTPUT_BUFFER_SIZE;
 
 	return TRUE;
@@ -289,11 +263,11 @@ static void _jpeg_term_destination(j_compress_ptr jpeg) {
 	// Called by jpeg_finish_compress after all data has been written.
 	// Usually needs to flush buffer.
 
-	struct _jpeg_dest_manager_t *dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
+	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
 	size_t final = JPEG_OUTPUT_BUFFER_SIZE - dest->mgr.free_in_buffer;
 
 	// Write any data remaining in the buffer.
-	picture_append_data(dest->picture, dest->buffer, final);
+	frame_append_data(dest->frame, dest->buf, final);
 }
 
 #undef JPEG_OUTPUT_BUFFER_SIZE

src/ustreamer/encoders/cpu/encoder.h

@@ -0,0 +1,38 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+
+#include <jpeglib.h>
+
+#include <linux/videodev2.h>
+
+#include "../../../libs/tools.h"
+#include "../../../libs/frame.h"
+
+
+void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality);

src/ustreamer/encoders/hw/encoder.c

@@ -1,13 +1,13 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
 #    This source file based on code of MJPG-Streamer.                        #
 #                                                                            #
 #    Copyright (C) 2005-2006  Laurent Pinchart & Michel Xhaard               #
 #    Copyright (C) 2006  Gabriel A. Devenyi                                  #
 #    Copyright (C) 2007  Tom Stöveken                                        #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -27,54 +27,22 @@
 
 #include "encoder.h"
 
-#include <stdbool.h>
-#include <string.h>
-#include <assert.h>
 
-#include <linux/videodev2.h>
-
-#include "../../tools.h"
-#include "../../logging.h"
-#include "../../xioctl.h"
-#include "../../picture.h"
-#include "../../device.h"
-
-#include "huffman.h"
+void _copy_plus_huffman(const frame_s *src, frame_s *dest);
+static bool _is_huffman(const uint8_t *data);
 
 
-void _copy_plus_huffman(const struct hw_buffer_t *src, struct picture_t *dest);
-static bool _is_huffman(const unsigned char *data);
-
-
-int hw_encoder_prepare(struct device_t *dev, unsigned quality) {
-	struct v4l2_jpegcompression comp;
-
-	MEMSET_ZERO(comp);
-
-	if (xioctl(dev->run->fd, VIDIOC_G_JPEGCOMP, &comp) < 0) {
-		LOG_ERROR("Device does not support setting of HW encoding quality parameters");
-		return -1;
-	}
-	comp.quality = quality;
-	if (xioctl(dev->run->fd, VIDIOC_S_JPEGCOMP, &comp) < 0) {
-		LOG_ERROR("Unable to change MJPG quality for JPEG source with HW pass-through encoder");
-		return -1;
-	}
-	return 0;
+void hw_encoder_compress(const frame_s *src, frame_s *dest) {
+	assert(is_jpeg(src->format));
+	_copy_plus_huffman(src, dest);
 }
 
-void hw_encoder_compress_buffer(struct device_t *dev, unsigned index) {
-	if (dev->run->format != V4L2_PIX_FMT_MJPEG && dev->run->format != V4L2_PIX_FMT_JPEG) {
-		assert(0 && "Unsupported input format for HW encoder");
-	}
-	_copy_plus_huffman(&dev->run->hw_buffers[index], dev->run->pictures[index]);
-}
+void _copy_plus_huffman(const frame_s *src, frame_s *dest) {
+	frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
 
-void _copy_plus_huffman(const struct hw_buffer_t *src, struct picture_t *dest) {
 	if (!_is_huffman(src->data)) {
-		const unsigned char *src_ptr = src->data;
-		const unsigned char *src_end = src->data + src->used;
-		size_t paste;
+		const uint8_t *src_ptr = src->data;
+		const uint8_t *src_end = src->data + src->used;
 
 		while ((((src_ptr[0] << 8) | src_ptr[1]) != 0xFFC0) && (src_ptr < src_end)) {
 			src_ptr += 1;
@@ -83,24 +51,28 @@ void _copy_plus_huffman(const struct hw_buffer_t *src, struct picture_t *dest) {
 			dest->used = 0; // Error
 			return;
 		}
-		paste = src_ptr - src->data;
 
-		picture_set_data(dest, src->data, paste);
-		picture_append_data(dest, HUFFMAN_TABLE, sizeof(HUFFMAN_TABLE));
-		picture_append_data(dest, src_ptr, src->used - paste);
+		const size_t paste = src_ptr - src->data;
+
+		frame_set_data(dest, src->data, paste);
+		frame_append_data(dest, HUFFMAN_TABLE, sizeof(HUFFMAN_TABLE));
+		frame_append_data(dest, src_ptr, src->used - paste);
+
 	} else {
-		picture_set_data(dest, src->data, src->used);
+		frame_set_data(dest, src->data, src->used);
 	}
+
+	frame_encoding_end(dest);
 }
 
-static bool _is_huffman(const unsigned char *data) {
+static bool _is_huffman(const uint8_t *data) {
 	unsigned count = 0;
 
-	while (((data[0] << 8) | data[1]) != 0xFFDA) {
+	while ((((uint16_t)data[0] << 8) | data[1]) != 0xFFDA) {
 		if (count++ > 2048) {
 			return false;
 		}
-		if (((data[0] << 8) | data[1]) == 0xFFC4) {
+		if ((((uint16_t)data[0] << 8) | data[1]) == 0xFFC4) {
 			return true;
 		}
 		data += 1;

src/ustreamer/encoders/hw/encoder.h

@@ -0,0 +1,37 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <assert.h>
+
+#include <linux/videodev2.h>
+
+#include "../../../libs/frame.h"
+
+#include "huffman.h"
+
+
+void hw_encoder_compress(const frame_s *src, frame_s *dest);

src/ustreamer/encoders/hw/huffman.h

@@ -1,13 +1,13 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
 #    This source file based on code of MJPG-Streamer.                        #
 #                                                                            #
 #    Copyright (C) 2005-2006  Laurent Pinchart & Michel Xhaard               #
 #    Copyright (C) 2006  Gabriel A. Devenyi                                  #
 #    Copyright (C) 2007  Tom Stöveken                                        #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -27,7 +27,10 @@
 
 #pragma once
 
-static const unsigned char HUFFMAN_TABLE[] = {
+#include <stdint.h>
+
+
+static const uint8_t HUFFMAN_TABLE[] = {
 	0xFF, 0xC4, 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
 	0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02,
 	0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x01, 0x00, 0x03,

src/ustreamer/gpio/gpio.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,20 +22,8 @@
 
 #include "gpio.h"
 
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <assert.h>
 
-#include <pthread.h>
-#include <gpiod.h>
-
-#include "../tools.h"
-#include "../logging.h"
-#include "../threading.h"
-
-
-struct gpio_t gpio = {
+gpio_s us_gpio = {
 	.path = "/dev/gpiochip0",
 	.consumer_prefix = "ustreamer",
 
@@ -58,47 +46,47 @@ struct gpio_t gpio = {
 };
 
 
-static void _gpio_output_init(struct gpio_output_t *output);
-static void _gpio_output_destroy(struct gpio_output_t *output);
+static void _gpio_output_init(gpio_output_s *output);
+static void _gpio_output_destroy(gpio_output_s *output);
 
 
 void gpio_init(void) {
-	assert(gpio.chip == NULL);
+	assert(us_gpio.chip == NULL);
 	if (
-		gpio.prog_running.pin >= 0
-		|| gpio.stream_online.pin >= 0
-		|| gpio.has_http_clients.pin >= 0
+		us_gpio.prog_running.pin >= 0
+		|| us_gpio.stream_online.pin >= 0
+		|| us_gpio.has_http_clients.pin >= 0
 	) {
-		A_MUTEX_INIT(&gpio.mutex);
-		LOG_INFO("GPIO: Using chip device: %s", gpio.path);
-		if ((gpio.chip = gpiod_chip_open(gpio.path)) != NULL) {
-			_gpio_output_init(&gpio.prog_running);
-			_gpio_output_init(&gpio.stream_online);
-			_gpio_output_init(&gpio.has_http_clients);
+		A_MUTEX_INIT(&us_gpio.mutex);
+		LOG_INFO("GPIO: Using chip device: %s", us_gpio.path);
+		if ((us_gpio.chip = gpiod_chip_open(us_gpio.path)) != NULL) {
+			_gpio_output_init(&us_gpio.prog_running);
+			_gpio_output_init(&us_gpio.stream_online);
+			_gpio_output_init(&us_gpio.has_http_clients);
 		} else {
-			LOG_PERROR("GPIO: Can't initialize chip device %s", gpio.path);
+			LOG_PERROR("GPIO: Can't initialize chip device %s", us_gpio.path);
 		}
 	}
 }
 
 void gpio_destroy(void) {
-	_gpio_output_destroy(&gpio.prog_running);
-	_gpio_output_destroy(&gpio.stream_online);
-	_gpio_output_destroy(&gpio.has_http_clients);
-	if (gpio.chip) {
-		gpiod_chip_close(gpio.chip);
-		gpio.chip = NULL;
-		A_MUTEX_DESTROY(&gpio.mutex);
+	_gpio_output_destroy(&us_gpio.prog_running);
+	_gpio_output_destroy(&us_gpio.stream_online);
+	_gpio_output_destroy(&us_gpio.has_http_clients);
+	if (us_gpio.chip) {
+		gpiod_chip_close(us_gpio.chip);
+		us_gpio.chip = NULL;
+		A_MUTEX_DESTROY(&us_gpio.mutex);
 	}
 }
 
-int gpio_inner_set(struct gpio_output_t *output, bool state) {
+int gpio_inner_set(gpio_output_s *output, bool state) {
 	int retval = 0;
 
-	assert(gpio.chip);
+	assert(us_gpio.chip);
 	assert(output->line);
 	assert(output->state != state); // Must be checked in macro for the performance
-	A_MUTEX_LOCK(&gpio.mutex);
+	A_MUTEX_LOCK(&us_gpio.mutex);
 
 	if (gpiod_line_set_value(output->line, (int)state) < 0) { \
 		LOG_PERROR("GPIO: Can't write value %d to line %s (will be disabled)", state, output->consumer); \
@@ -106,19 +94,18 @@ int gpio_inner_set(struct gpio_output_t *output, bool state) {
 		retval = -1;
 	}
 
-	A_MUTEX_UNLOCK(&gpio.mutex);
+	A_MUTEX_UNLOCK(&us_gpio.mutex);
 	return retval;
 }
 
-static void _gpio_output_init(struct gpio_output_t *output) {
-	assert(gpio.chip);
+static void _gpio_output_init(gpio_output_s *output) {
+	assert(us_gpio.chip);
 	assert(output->line == NULL);
 
-	A_CALLOC(output->consumer, strlen(gpio.consumer_prefix) + strlen(output->role) + 16);
-	sprintf(output->consumer, "%s::%s", gpio.consumer_prefix, output->role);
+	A_ASPRINTF(output->consumer, "%s::%s", us_gpio.consumer_prefix, output->role);
 
 	if (output->pin >= 0) {
-		if ((output->line = gpiod_chip_get_line(gpio.chip, output->pin)) != NULL) {
+		if ((output->line = gpiod_chip_get_line(us_gpio.chip, output->pin)) != NULL) {
 			if (gpiod_line_request_output(output->line, output->consumer, 0) < 0) {
 				LOG_PERROR("GPIO: Can't request pin=%d as %s", output->pin, output->consumer);
 				_gpio_output_destroy(output);
@@ -129,7 +116,7 @@ static void _gpio_output_init(struct gpio_output_t *output) {
 	}
 }
 
-static void _gpio_output_destroy(struct gpio_output_t *output) {
+static void _gpio_output_destroy(gpio_output_s *output) {
 	if (output->line) {
 		gpiod_line_release(output->line);
 		output->line = NULL;

src/ustreamer/gpio/gpio.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,42 +22,46 @@
 
 #pragma once
 
+#include <stdlib.h>
 #include <stdbool.h>
+#include <string.h>
+#include <assert.h>
 
 #include <pthread.h>
 #include <gpiod.h>
 
-#include "../tools.h"
-#include "../logging.h"
+#include "../../libs/tools.h"
+#include "../../libs/logging.h"
+#include "../../libs/threading.h"
 
 
-struct gpio_output_t {
+typedef struct {
 	int					pin;
 	const char			*role;
 	char 				*consumer;
 	struct gpiod_line	*line;
 	bool				state;
-};
+} gpio_output_s;
 
-struct gpio_t {
+typedef struct {
 	char *path;
 	char *consumer_prefix;
 
-	struct gpio_output_t prog_running;
-	struct gpio_output_t stream_online;
-	struct gpio_output_t has_http_clients;
+	gpio_output_s prog_running;
+	gpio_output_s stream_online;
+	gpio_output_s has_http_clients;
 
 	pthread_mutex_t		mutex;
 	struct gpiod_chip	*chip;
-};
+} gpio_s;
 
 
-extern struct gpio_t gpio;
+extern gpio_s us_gpio;
 
 
 void gpio_init(void);
 void gpio_destroy(void);
-int gpio_inner_set(struct gpio_output_t *output, bool state);
+int gpio_inner_set(gpio_output_s *output, bool state);
 
 
 #define SET_STATE(_output, _state) { \
@@ -69,15 +73,15 @@ int gpio_inner_set(struct gpio_output_t *output, bool state);
 	}
 
 INLINE void gpio_set_prog_running(bool state) {
-	SET_STATE(gpio.prog_running, state);
+	SET_STATE(us_gpio.prog_running, state);
 }
 
 INLINE void gpio_set_stream_online(bool state) {
-	SET_STATE(gpio.stream_online, state);
+	SET_STATE(us_gpio.stream_online, state);
 }
 
 INLINE void gpio_set_has_http_clients(bool state) {
-	SET_STATE(gpio.has_http_clients, state);
+	SET_STATE(us_gpio.has_http_clients, state);
 }
 
 #undef SET_STATE

src/ustreamer/h264/stream.c

@@ -0,0 +1,64 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "stream.h"
+
+
+h264_stream_s *h264_stream_init(memsink_s *sink, const char *path, unsigned bitrate, unsigned gop) {
+	h264_stream_s *h264;
+	A_CALLOC(h264, 1);
+	h264->sink = sink;
+	h264->tmp_src = frame_init();
+	h264->dest = frame_init();
+	atomic_init(&h264->online, false);
+	h264->enc = m2m_h264_encoder_init("H264", path, bitrate, gop);
+	return h264;
+}
+
+void h264_stream_destroy(h264_stream_s *h264) {
+	m2m_encoder_destroy(h264->enc);
+	frame_destroy(h264->dest);
+	frame_destroy(h264->tmp_src);
+	free(h264);
+}
+
+void h264_stream_process(h264_stream_s *h264, const frame_s *frame, bool force_key) {
+	if (!memsink_server_check(h264->sink, frame)) {
+		return;
+	}
+
+	if (is_jpeg(frame->format)) {
+		long double now = get_now_monotonic();
+		LOG_DEBUG("H264: Input frame is JPEG; decoding ...");
+		if (unjpeg(frame, h264->tmp_src, true) < 0) {
+			return;
+		}
+		frame = h264->tmp_src;
+		LOG_VERBOSE("H264: JPEG decoded; time=%.3Lf", get_now_monotonic() - now);
+	}
+
+	bool online = false;
+	if (!m2m_encoder_compress(h264->enc, frame, h264->dest, force_key)) {
+		online = !memsink_server_put(h264->sink, h264->dest);
+	}
+	atomic_store(&h264->online, online);
+}

src/ustreamer/h264/stream.h

@@ -0,0 +1,48 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdatomic.h>
+#include <assert.h>
+
+#include "../../libs/tools.h"
+#include "../../libs/logging.h"
+#include "../../libs/frame.h"
+#include "../../libs/memsink.h"
+#include "../../libs/unjpeg.h"
+#include "../m2m.h"
+
+
+typedef struct {
+	memsink_s		*sink;
+	frame_s			*tmp_src;
+	frame_s			*dest;
+	m2m_encoder_s	*enc;
+	atomic_bool		online;
+} h264_stream_s;
+
+
+h264_stream_s *h264_stream_init(memsink_s *sink, const char *path, unsigned bitrate, unsigned gop);
+void h264_stream_destroy(h264_stream_s *h264);
+void h264_stream_process(h264_stream_s *h264, const frame_s *frame, bool force_key);

src/ustreamer/http/bev.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -20,32 +20,39 @@
 *****************************************************************************/
 
 
-#pragma once
-
-#include <stddef.h>
-#include <stdbool.h>
+#include "bev.h"
 
 
-struct picture_t {
-	unsigned char	*data;
-	size_t			used;
-	size_t			allocated;
-	unsigned		width;
-	unsigned		height;
-	long double		grab_ts;
-	long double		encode_begin_ts;
-	long double		encode_end_ts;
-};
+char *bufferevent_my_format_reason(short what) {
+	char *reason;
+	A_CALLOC(reason, 2048);
 
+	char perror_buf[1024] = {0};
+	char *perror_ptr = errno_to_string(EVUTIL_SOCKET_ERROR(), perror_buf, 1024); // evutil_socket_error_to_string() is not thread-safe
+	bool first = true;
 
-struct picture_t *picture_init(void);
-void picture_destroy(struct picture_t *picture);
+	strcat(reason, perror_ptr);
+	strcat(reason, " (");
 
-size_t picture_get_generous_size(unsigned width, unsigned height);
+#	define FILL_REASON(_bev, _name) { \
+			if (what & _bev) { \
+				if (first) { \
+					first = false; \
+				} else { \
+					strcat(reason, ","); \
+				} \
+				strcat(reason, _name); \
+			} \
+		}
 
-void picture_realloc_data(struct picture_t *picture, size_t size);
-void picture_set_data(struct picture_t *picture, const unsigned char *data, size_t size);
-void picture_append_data(struct picture_t *picture, const unsigned char *data, size_t size);
+	FILL_REASON(BEV_EVENT_READING, "reading");
+	FILL_REASON(BEV_EVENT_WRITING, "writing");
+	FILL_REASON(BEV_EVENT_ERROR, "error");
+	FILL_REASON(BEV_EVENT_TIMEOUT, "timeout");
+	FILL_REASON(BEV_EVENT_EOF, "eof"); // cppcheck-suppress unreadVariable
 
-void picture_copy(const struct picture_t *src, struct picture_t *dest);
-bool picture_compare(const struct picture_t *a, const struct picture_t *b);
+#	undef FILL_REASON
+
+	strcat(reason, ")");
+	return reason;
+}

src/ustreamer/http/bev.h

@@ -0,0 +1,35 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <string.h>
+#include <errno.h>
+
+#include <event2/util.h>
+#include <event2/bufferevent.h>
+
+#include "../../libs/tools.h"
+#include "../../libs/logging.h"
+
+
+char *bufferevent_my_format_reason(short what);

src/ustreamer/http/mime.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,12 +22,6 @@
 
 #include "mime.h"
 
-#include <string.h>
-
-#include <event2/util.h>
-
-#include "../tools.h"
-
 
 static const struct {
 	const char *ext;
@@ -53,15 +47,13 @@ static const struct {
 
 
 const char *guess_mime_type(const char *path) {
-	char *dot;
-	char *ext;
-
-	dot = strrchr(path, '.');
+	// FIXME: false-positive cppcheck
+	char *dot = strrchr(path, '.'); // cppcheck-suppress ctunullpointer
 	if (dot == NULL || strchr(dot, '/') != NULL) {
 		goto misc;
 	}
 
-	ext = dot + 1;
+	char *ext = dot + 1;
 	for (unsigned index = 0; index < ARRAY_LEN(_MIME_TYPES); ++index) {
 		if (!evutil_ascii_strcasecmp(ext, _MIME_TYPES[index].ext)) {
 			return _MIME_TYPES[index].mime;

src/ustreamer/http/mime.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,5 +22,11 @@
 
 #pragma once
 
+#include <string.h>
+
+#include <event2/util.h>
+
+#include "../../libs/tools.h"
+
 
 const char *guess_mime_type(const char *str);

src/ustreamer/http/path.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,14 +22,6 @@
 
 #include "path.h"
 
-#ifdef TEST_HTTP_PATH
-#	include <stdio.h>
-#	include <stdlib.h>
-#endif
-#include <string.h>
-
-#include "../tools.h"
-
 
 char *simplify_request_path(const char *str) {
 	// Based on Lighttpd sources:

src/ustreamer/http/path.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,5 +22,13 @@
 
 #pragma once
 
+#ifdef TEST_HTTP_PATH
+#	include <stdio.h>
+#	include <stdlib.h>
+#endif
+#include <string.h>
+
+#include "../../libs/tools.h"
+
 
 char *simplify_request_path(const char *str);