Bump version: 5.1 → 5.2

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 = 3.5
-parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
+current_version = 5.2
+parse = (?P<major>\d+)\.(?P<minor>\d+)
 serialize = 
 	{major}.{minor}
 
 [bumpversion:file:src/libs/config.h]
-search = VERSION "{current_version}"
-replace = VERSION "{new_version}"
+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}

.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

.github/FUNDING.yml

@@ -1,4 +1,4 @@
 # These are supported funding model platforms
 
 patreon: pikvm
-custom: https://www.paypal.me/mdevaev
+#custom: https://www.paypal.me/mdevaev

.gitignore

@@ -2,12 +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
 /ustreamer-dump
-/*.sock
+/config.mk
+vgcore.*
+*.sock
+*.so
+*.bin
+*.pkg.tar.xz
+*.pkg.tar.zst
+*.tar.gz

Makefile

@@ -1,153 +1,93 @@
 -include config.mk
 
-USTR ?= ustreamer
-DUMP ?= ustreamer-dump
 DESTDIR ?=
 PREFIX ?= /usr/local
 MANPREFIX ?= $(PREFIX)/share/man
 
 CC ?= gcc
-CFLAGS ?= -O3 -MD
+PY ?= python3
+CFLAGS ?= -O3
 LDFLAGS ?=
 
 RPI_VC_HEADERS ?= /opt/vc/include
 RPI_VC_LIBS ?= /opt/vc/lib
 
-BUILD ?= build
+export
 
-LINTERS_IMAGE ?= $(USTR)-linters
+_LINTERS_IMAGE ?= ustreamer-linters
 
 
 # =====
-override CFLAGS += -c -std=c11 -Wall -Wextra -D_GNU_SOURCE
-
-_COMMON_LIBS = -lm -ljpeg -pthread -lrt
-
-_USTR_LIBS = $(_COMMON_LIBS) -levent -levent_pthreads -luuid
-_USTR_SRCS = $(shell ls \
-	src/libs/*.c \
-	src/ustreamer/*.c \
-	src/ustreamer/http/*.c \
-	src/ustreamer/data/*.c \
-	src/ustreamer/encoders/cpu/*.c \
-	src/ustreamer/encoders/hw/*.c \
-)
-
-_DUMP_LIBS = $(_COMMON_LIBS)
-_DUMP_SRCS = $(shell ls \
-	src/libs/*.c \
-	src/dump/*.c \
-)
-
-
 define optbool
 $(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
 endef
 
 
-ifneq ($(call optbool,$(WITH_OMX)),)
-_USTR_LIBS += -lbcm_host -lvcos -lvcsm -lopenmaxil -lmmal -lmmal_core -lmmal_util -lmmal_vc_client -lmmal_components -L$(RPI_VC_LIBS)
-override CFLAGS += -DWITH_OMX -DOMX_SKIP64BIT -I$(RPI_VC_HEADERS)
-_USTR_SRCS += $(shell ls \
-	src/ustreamer/encoders/omx/*.c \
-	src/ustreamer/h264/*.c \
-)
-endif
-
-
-ifneq ($(call optbool,$(WITH_GPIO)),)
-_USTR_LIBS += -lgpiod
-override CFLAGS += -DWITH_GPIO
-_USTR_SRCS += $(shell ls src/ustreamer/gpio/*.c)
-endif
-
-
-WITH_PTHREAD_NP ?= 1
-ifneq ($(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)
-_USTR_LIBS += -lbsd
-endif
-override CFLAGS += -DWITH_SETPROCTITLE
-endif
-
-
 # =====
-all: $(USTR) $(DUMP)
+all:
+	+ $(MAKE) apps
+ifneq ($(call optbool,$(WITH_PYTHON)),)
+	+ $(MAKE) python
+endif
+ifneq ($(call optbool,$(WITH_JANUS)),)
+	+ $(MAKE) janus
+endif
 
 
-install: $(USTR) $(DUMP)
-	mkdir -p $(DESTDIR)$(PREFIX)/bin $(DESTDIR)$(MANPREFIX)/man1
-	install -m755 $(USTR) $(DESTDIR)$(PREFIX)/bin/$(USTR)
-	install -m755 $(DUMP) $(DESTDIR)$(PREFIX)/bin/$(DUMP)
-	install -m644 man/$(USTR).1 $(DESTDIR)$(MANPREFIX)/man1/$(USTR).1
-	install -m644 man/$(DUMP).1 $(DESTDIR)$(MANPREFIX)/man1/$(DUMP).1
-	gzip $(DESTDIR)$(MANPREFIX)/man1/$(USTR).1
-	gzip $(DESTDIR)$(MANPREFIX)/man1/$(DUMP).1
+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/$(USTR)
-	strip $(DESTDIR)$(PREFIX)/bin/$(DUMP)
-
-
-uninstall:
-	rm -f $(DESTDIR)$(PREFIX)/bin/$(USTR) \
-		$(DESTDIR)$(PREFIX)/bin/$(DUMP) \
-		$(DESTDIR)$(MANPREFIX)/man1/$(USTR).1 \
-		$(DESTDIR)$(MANPREFIX)/man1/$(DUMP).1
+	$(MAKE) -C src install-strip
 
 
 regen:
-	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
-
-
-$(USTR): $(_USTR_SRCS:%.c=$(BUILD)/%.o)
-#	$(info ========================================)
-	$(info == LD $@)
-	@ $(CC) $^ -o $@ $(LDFLAGS) $(_USTR_LIBS)
-#	$(info :: CC      = $(CC))
-#	$(info :: LIBS    = $(_USTR_LIBS))
-#	$(info :: CFLAGS  = $(CFLAGS))
-#	$(info :: LDFLAGS = $(LDFLAGS))
-
-
-$(DUMP): $(_DUMP_SRCS:%.c=$(BUILD)/%.o)
-#	$(info ========================================)
-	$(info == LD $@)
-	@ $(CC) $^ -o $@ $(LDFLAGS) $(_DUMP_LIBS)
-#	$(info :: CC      = $(CC))
-#	$(info :: LIBS    = $(_DUMP_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) \
 		"
@@ -157,7 +97,7 @@ linters:
 	docker build \
 			$(if $(call optbool,$(NC)),--no-cache,) \
 			--rm \
-			--tag $(LINTERS_IMAGE) \
+			--tag $(_LINTERS_IMAGE) \
 		-f linters/Dockerfile linters
 
 
@@ -173,14 +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 $(USTR) $(DUMP) $(BUILD) vgcore.* *.sock
+	rm -f ustreamer ustreamer-dump *.so
+	$(MAKE) -C src clean
+	$(MAKE) -C python clean
+	$(MAKE) -C janus clean
 
 
-.PHONY: linters
-
-
-_OBJS = $(_USTR_SRCS:%.c=$(BUILD)/%.o) $(_DUMP_SRCS:%.c=$(BUILD)/%.o)
--include $(_OBJS:%.o=%.d)
+.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()```.
 
 -----
@@ -34,14 +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`.
-* Ubuntu 20.04 x86_64: `sudo apt install build-essential libevent-dev libjpeg62-dev uuid-dev libbsd-dev make gcc libjpeg8 libjpeg-turbo8 libuuid1 libbsd0`.
+* 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
@@ -50,7 +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.
 
 -----
@@ -66,8 +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
@@ -77,14 +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) 2018-2021 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()```.
 
 -----
@@ -34,14 +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`.
-* Ubuntu 20.04 x86_64: `sudo apt install build-essential libevent-dev libjpeg62-dev uuid-dev libbsd-dev make gcc libjpeg8 libjpeg-turbo8 libuuid1 libbsd0`.
+* 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
@@ -50,7 +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.
 
 -----
@@ -66,8 +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
@@ -77,14 +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) 2018-2021 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

@@ -1,8 +1,11 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  Maxim Devaev <mdevaev@gmail.com>               #
+#    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    #
@@ -24,49 +27,43 @@
 
 #include <stdlib.h>
 #include <stdbool.h>
+#include <stdint.h>
+#include <inttypes.h>
 #include <string.h>
-#include <unistd.h>
 #include <assert.h>
 
+#include <sys/types.h>
 #include <linux/videodev2.h>
 
-#include <IL/OMX_Core.h>
-#include <IL/OMX_Component.h>
-#include <IL/OMX_Broadcom.h>
-#include <interface/vcos/vcos_semaphore.h>
+#include <pthread.h>
 
-#include "../../../libs/tools.h"
-#include "../../../libs/logging.h"
-#include "../../../libs/frame.h"
-
-#include "formatters.h"
-#include "component.h"
+#include "tools.h"
+#include "threading.h"
+#include "frame.h"
+#include "base64.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))
+// https://stackoverflow.com/questions/47635545/why-webrtc-chose-rtp-max-packet-size-to-1200-bytes
+#define RTP_DATAGRAM_SIZE 1200
 
 
 typedef struct {
-	OMX_HANDLETYPE			comp;
-	OMX_BUFFERHEADERTYPE	*input_buf;
-	OMX_BUFFERHEADERTYPE	*output_buf;
-	bool					input_required;
-	bool					output_available;
-	bool					failed;
-	VCOS_SEMAPHORE_T		handler_sem;
+	uint32_t ssrc;
+	uint16_t seq;
 
-	bool	i_handler_sem;
-	bool	i_encoder;
-	bool	i_input_port_enabled;
-	bool	i_output_port_enabled;
-} omx_encoder_s;
+	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);
 
 
-omx_encoder_s *omx_encoder_init(void);
-void omx_encoder_destroy(omx_encoder_s *omx);
+rtp_s *rtp_init(void);
+void rtp_destroy(rtp_s *rtp);
 
-int omx_encoder_prepare(omx_encoder_s *omx, const frame_s *frame, unsigned quality);
-int omx_encoder_compress(omx_encoder_s *omx, const frame_s *src, frame_s *dest);
+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/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 = python3.9
+basepython = python3.10
 changedir = /src
 
 [testenv:cppcheck]
@@ -17,33 +17,32 @@ commands = cppcheck \
 			--suppress=assignmentInAssert \
 			--suppress=variableScope \
 			--inline-suppr \
-			-DCHAR_BIT=8 \
-			-DWITH_OMX \
-			-DWITH_GPIO \
-		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
 

man/ustreamer-dump.1

@@ -1,6 +1,6 @@
 .\" 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 3.5" "January 2021"
+.TH USTREAMER-DUMP 1 "version 5.2" "January 2021"
 
 .SH NAME
 ustreamer-dump \- Dump uStreamer's memory sink to file
@@ -38,6 +38,12 @@ 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

man/ustreamer.1

@@ -1,16 +1,16 @@
 .\" Manpage for ustreamer.
 .\" Open an issue or pull request to https://github.com/pikvm/ustreamer to correct errors or typos
-.TH USTREAMER 1 "version 3.5" "November 2020"
+.TH USTREAMER 1 "version 5.2" "November 2020"
 
 .SH NAME
-ustreamer \- stream MJPG video from any V4L2 device to the network
+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 MJPG 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.
+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
@@ -23,9 +23,9 @@ For example, the recommended way of running µStreamer with Auvidea B101 on a Ra
 .RS
 \fB\-\-format=uyvy \e\fR # Device input format
 .nf
-\fB\-\-encoder=omx \e\fR # Hardware encoding with OpenMAX
+\fB\-\-encoder=m2m-image \e\fR # Hardware encoding with V4L2 M2M intraface
 .nf
-\fB\-\-workers=3 \e\fR # Maximum workers for OpenMAX
+\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
@@ -72,7 +72,7 @@ Drop frames smaller then this limit. Useful if the device produces small\-sized
 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.
+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.
@@ -84,27 +84,29 @@ 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 MJPG to MJPG to change the quality level for sources that already output MJPG.
+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 MJPG encoding (default).
+CPU ─ Software MJPEG encoding (default).
 
-OMX ─ GPU hardware accelerated MJPG encoding with OpenMax (required \fBWITH_OMX\fR feature).
+HW ─ Use pre-encoded MJPEG frames directly from camera hardware.
 
-HW ─ Use pre-encoded MJPG frames directly from camera hardware.
+M2M-VIDEO ─ GPU-accelerated MJPEG encoding.
 
-NOOP ─ Don't compress MJPG stream (do nothing).
+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. Required \fBWITH_OMX\fR feature.
+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. Default: disabled.
+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.
@@ -114,11 +116,14 @@ 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 bellow to default. Default: no change.
+Reset all image settings below to default. Default: no change.
 .TP
 .BR \-\-brightness\ \fIN ", " \fIauto ", " \fIdefault
 Set brightness. Default: no change.
@@ -166,13 +171,16 @@ 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
+.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
@@ -189,7 +197,7 @@ Don't send identical frames to clients, but no more than specified number. It ca
 Override image resolution for the /state. Default: disabled.
 .TP
 .BR \-\-tcp\-nodelay
-Set TCP_NODELAY flag to the client /stream socket. Ignored for \-\-unix.
+Set TCP_NODELAY flag to the client /stream socket. Only for TCP socket.
 Default: disabled.
 .TP
 .BR \-\-allow\-origin\ \fIstr
@@ -210,15 +218,16 @@ Set JPEG sink permissions (like 777). Default: 660.
 .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
-Available only if \fBWITH_OMX\fR feature enabled.
-.TP
 .BR \-\-h264\-sink\ \fIname
-Use the specified shared memory object to sink H264 frames encoded by MMAL. Default: disabled.
+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.
@@ -226,14 +235,30 @@ Set H264 sink permissions (like 777). Default: 660.
 .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

pkg/arch/PKGBUILD

@@ -3,36 +3,51 @@
 
 
 pkgname=ustreamer
-pkgver=3.5
+pkgver=5.2
 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"
-
-	# LD does not link mmal with this option
-	LDFLAGS="${LDFLAGS//--as-needed/}"
-	LDFLAGS="${LDFLAGS//,,/,}"
-
 	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

@@ -5,7 +5,7 @@ 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"
 
@@ -17,7 +17,6 @@ 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}"

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=3.5
+PKG_VERSION:=5.2
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 
@@ -25,12 +25,12 @@ 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

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="5.2",
+        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/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

@@ -0,0 +1,49 @@
+/*****************************************************************************
+#                                                                            #
+#    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 <stdbool.h>
+
+#include <sys/types.h>
+
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/frame.h"
+#include "../libs/base64.h"
+
+
+typedef struct {
+	const char *path;
+	bool		json;
+
+	FILE		*fp;
+	char		*base64_data;
+	size_t		base64_allocated;
+} output_file_s;
+
+
+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

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -23,7 +23,10 @@
 #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>
@@ -33,7 +36,9 @@
 #include "../libs/logging.h"
 #include "../libs/frame.h"
 #include "../libs/memsink.h"
-#include "../libs/base64.h"
+#include "../libs/options.h"
+
+#include "file.h"
 
 
 enum _OPT_VALUES {
@@ -41,6 +46,8 @@ enum _OPT_VALUES {
 	_O_SINK_TIMEOUT = 't',
 	_O_OUTPUT = 'o',
 	_O_OUTPUT_JSON = 'j',
+	_O_COUNT = 'c',
+	_O_INTERVAL = 'i',
 
 	_O_HELP = 'h',
 	_O_VERSION = 'v',
@@ -58,6 +65,8 @@ static const struct option _LONG_OPTS[] = {
 	{"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},
@@ -73,13 +82,23 @@ static const struct option _LONG_OPTS[] = {
 };
 
 
-volatile bool stop = false;
+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, const char *output_path, bool output_json);
+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);
 
@@ -92,6 +111,8 @@ int main(int argc, char *argv[]) {
 	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; \
@@ -108,28 +129,44 @@ int main(int argc, char *argv[]) {
 			break; \
 		}
 
-	for (int ch; (ch = getopt_long(argc, argv, "s:t:o:jhv", _LONG_OPTS, NULL)) >= 0;) {
+#	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", 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_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:	_help(stderr); return 1;
+			default:	return 1;
 		}
 	}
 
+#	undef OPT_LDOUBLE
 #	undef OPT_NUMBER
 #	undef OPT_SET
 
@@ -138,8 +175,22 @@ int main(int argc, char *argv[]) {
 		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();
-	return abs(_dump_sink(sink_name, sink_timeout, output_path, output_json));
+	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;
 }
 
 
@@ -150,12 +201,11 @@ static void _signal_handler(int signum) {
 		case SIGPIPE:	LOG_INFO_NOLOCK("===== Stopping by SIGPIPE ====="); break;
 		default:		LOG_INFO_NOLOCK("===== Stopping by %d =====", signum); break;
 	}
-	stop = true;
+	global_stop = true;
 }
 
 static void _install_signal_handlers(void) {
-	struct sigaction sig_act;
-	MEMSET_ZERO(sig_act);
+	struct sigaction sig_act = {0};
 
 	assert(!sigemptyset(&sig_act.sa_mask));
 	sig_act.sa_handler = _signal_handler;
@@ -173,27 +223,21 @@ static void _install_signal_handlers(void) {
 	assert(!sigaction(SIGPIPE, &sig_act, NULL));
 }
 
-static int _dump_sink(const char *sink_name, unsigned sink_timeout, const char *output_path, bool output_json) {
-	frame_s *frame = frame_init("input");
-	memsink_s *sink = NULL;
-	FILE *output_fp = NULL;
-	char *base64_data = NULL;
-	size_t base64_allocated = 0;
+static int _dump_sink(
+	const char *sink_name, unsigned sink_timeout,
+	long long count, long double interval,
+	_output_context_s *ctx) {
 
-	if (output_path && output_path[0] != '\0') {
-		if (!strcmp(output_path, "-")) {
-			LOG_INFO("Using output: <stdout>");
-			output_fp = stdout;
-		} else {
-			LOG_INFO("Using output: %s", output_path);
-			if ((output_fp = fopen(output_path, "wb")) == NULL) {
-				LOG_PERROR("Can't open output file");
-				goto error;
-			}
-		}
+	if (count == 0) {
+		count = -1;
 	}
 
-	if ((sink = memsink_init("input", sink_name, false, 0, false, sink_timeout)) == NULL) {
+	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;
 	}
 
@@ -201,18 +245,21 @@ static int _dump_sink(const char *sink_name, unsigned sink_timeout, const char *
 	unsigned fps_accum = 0;
 	long long fps_second = 0;
 
-	while (!stop) {
+	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, resolution=%ux%u, fourcc=%s, stride=%u, online=%d, latency=%.3Lf",
+			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,
-				now - frame->grab_ts);
+				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);
@@ -225,24 +272,23 @@ static int _dump_sink(const char *sink_name, unsigned sink_timeout, const char *
 			}
 			fps_accum += 1;
 
-			if (output_fp) {
-				if (output_json) {
-					base64_encode(frame->data, frame->used, &base64_data, &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,
-						base64_data);
-				} else {
-					fwrite(frame->data, 1, frame->used, output_fp);
-				}
-				fflush(output_fp);
+			if (ctx->v_output) {
+				ctx->write(ctx->v_output, frame);
 			}
-		} else if (error != -2) {
+
+			if (count >= 0) {
+				--count;
+				if (count <= 0) {
+					break;
+				}
+			}
+
+			if (interval_us > 0) {
+				usleep(interval_us);
+			}
+		} else if (error == -2) {
+			usleep(1000);
+		} else {
 			goto error;
 		}
 	}
@@ -254,14 +300,6 @@ static int _dump_sink(const char *sink_name, unsigned sink_timeout, const char *
 		retval = -1;
 
 	ok:
-		if (base64_data) {
-			free(base64_data);
-		}
-		if (output_fp && output_fp != stdout) {
-			if (fclose(output_fp) < 0) {
-				LOG_PERROR("Can't close output file");
-			}
-		}
 		if (sink) {
 			memsink_destroy(sink);
 		}
@@ -276,7 +314,7 @@ static void _help(FILE *fp) {
 	SAY("\nuStreamer-dump - Dump uStreamer's memory sink to file");
 	SAY("═════════════════════════════════════════════════════");
 	SAY("Version: %s; license: GPLv3", VERSION);
-	SAY("Copyright (C) 2018-2021 Maxim Devaev <mdevaev@gmail.com>\n");
+	SAY("Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com>\n");
 	SAY("Example:");
 	SAY("════════");
 	SAY("    ustreamer-dump --sink test --output - \\");
@@ -287,12 +325,14 @@ static void _help(FILE *fp) {
 	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", log_level);
+	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");

src/libs/base64.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/base64.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/config.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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 +22,11 @@
 
 #pragma once
 
-#ifndef VERSION
-#	define VERSION "3.5"
-#endif
+#define VERSION_MAJOR 5
+#define VERSION_MINOR 2
+
+#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

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -23,17 +23,15 @@
 #include "frame.h"
 
 
-frame_s *frame_init(const char *name) {
+frame_s *frame_init(void) {
 	frame_s *frame;
 	A_CALLOC(frame, 1);
-	frame->name = name;
-	frame->managed = true;
 	frame_realloc_data(frame, 512 * 1024);
+	frame->dma_fd = -1;
 	return frame;
 }
 
 void frame_destroy(frame_s *frame) {
-	assert(frame->managed);
 	if (frame->data) {
 		free(frame->data);
 	}
@@ -41,66 +39,36 @@ void frame_destroy(frame_s *frame) {
 }
 
 void frame_realloc_data(frame_s *frame, size_t size) {
-	assert(frame->managed);
 	if (frame->allocated < size) {
-		LOG_DEBUG("Increasing frame buffer '%s': %zu -> %zu (+%zu)",
-			frame->name, frame->allocated, size, size - frame->allocated);
 		A_REALLOC(frame->data, size);
 		frame->allocated = size;
 	}
 }
 
 void frame_set_data(frame_s *frame, const uint8_t *data, size_t size) {
-	assert(frame->managed);
 	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) {
-	assert(frame->managed);
 	size_t new_used = frame->used + size;
 	frame_realloc_data(frame, new_used);
 	memcpy(frame->data + frame->used, data, size);
 	frame->used = new_used;
 }
 
-#define COPY(_field) dest->_field = src->_field
-
 void frame_copy(const frame_s *src, frame_s *dest) {
-	assert(dest->managed);
 	frame_set_data(dest, src->data, src->used);
-	COPY(used);
-	frame_copy_meta(src, dest);
+	FRAME_COPY_META(src, dest);
 }
 
-void frame_copy_meta(const frame_s *src, frame_s *dest) {
-	// Don't copy the name
-	COPY(width);
-	COPY(height);
-	COPY(format);
-	COPY(stride);
-	COPY(online);
-	COPY(grab_ts);
-	COPY(encode_begin_ts);
-	COPY(encode_end_ts);
-}
-
-#undef COPY
-
 bool frame_compare(const frame_s *a, const frame_s *b) {
-#	define CMP(_field) (a->_field == b->_field)
 	return (
 		a->allocated && b->allocated
-		&& CMP(used)
-		&& CMP(width)
-		&& CMP(height)
-		&& CMP(format)
-		&& CMP(stride)
-		&& CMP(online)
+		&& FRAME_COMPARE_META_USED_NOTS(a, b)
 		&& !memcmp(a->data, b->data, b->used)
 	);
-#	undef CMP
 }
 
 unsigned frame_get_padding(const frame_s *frame) {
@@ -113,7 +81,7 @@ unsigned frame_get_padding(const frame_s *frame) {
 		// case V4L2_PIX_FMT_H264:
 		case V4L2_PIX_FMT_MJPEG:
 		case V4L2_PIX_FMT_JPEG: bytes_per_pixel = 0; break;
-		default: assert(0 && "Unknown pixelformat");
+		default: assert(0 && "Unknown format");
 	}
 	if (bytes_per_pixel > 0 && frame->stride > frame->width) {
 		return (frame->stride - frame->width * bytes_per_pixel);

src/libs/frame.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -32,15 +32,13 @@
 #include <linux/videodev2.h>
 
 #include "tools.h"
-#include "logging.h"
 
 
 typedef struct {
-	const char *name;
-
 	uint8_t	*data;
 	size_t	used;
 	size_t	allocated;
+	int		dma_fd;
 
 	unsigned width;
 	unsigned height;
@@ -51,16 +49,57 @@ typedef struct {
 	// 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;
-
-	bool managed;
 } frame_s;
 
 
-frame_s *frame_init(const char *name);
+#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);
@@ -68,13 +107,12 @@ 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);
-void frame_copy_meta(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);
 
-inline bool is_jpeg(unsigned format) {
+static inline bool is_jpeg(unsigned format) {
 	return (format == V4L2_PIX_FMT_JPEG || format == V4L2_PIX_FMT_MJPEG);
 }

src/libs/list.h

@@ -0,0 +1,71 @@
+/*****************************************************************************
+#                                                                            #
+#    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 <assert.h>
+
+
+#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; \
+		} \
+	}
+
+#define LIST_APPEND_C(_first, _item, _count) { \
+		LIST_APPEND(_first, _item); \
+		++(_count); \
+	}
+
+#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; \
+		} \
+	}
+
+#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) 2018-2021  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    #
@@ -23,8 +23,8 @@
 #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) 2018-2021  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(2); \
-		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"
@@ -84,7 +84,7 @@ extern pthread_mutex_t log_mutex;
 	}
 
 #define SEP_DEBUG(_ch) { \
-		if (log_level >= LOG_LEVEL_DEBUG) { \
+		if (us_log_level >= LOG_LEVEL_DEBUG) { \
 			SEP_INFO(_ch); \
 		} \
 	}
@@ -93,7 +93,7 @@ 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) { \
+		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__); \
@@ -130,43 +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

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -23,23 +23,29 @@
 #include "memsink.h"
 
 
-static int _flock_timedwait_monotonic(int fd, long double timeout);
+memsink_s *memsink_init(
+	const char *name, const char *obj, bool server,
+	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout) {
 
-
-memsink_s *memsink_init(const char *name, const char *obj, bool server, mode_t mode, bool rm, 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);
 
-	if ((sink->fd = shm_open(sink->obj, (server ? O_RDWR | O_CREAT : O_RDWR), mode)) == -1) {
+	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;
 	}
@@ -49,14 +55,7 @@ memsink_s *memsink_init(const char *name, const char *obj, bool server, mode_t m
 		goto error;
 	}
 
-	if ((sink->mem = mmap(
-		NULL,
-		sizeof(memsink_shared_s),
-		PROT_READ | PROT_WRITE,
-		MAP_SHARED,
-		sink->fd,
-		0
-	)) == MAP_FAILED) {
+	if ((sink->mem = memsink_shared_map(sink->fd)) == NULL) {
 		LOG_PERROR("%s-sink: Can't mmap shared memory", name);
 		goto error;
 	}
@@ -70,7 +69,7 @@ memsink_s *memsink_init(const char *name, const char *obj, bool server, mode_t m
 
 void memsink_destroy(memsink_s *sink) {
 	if (sink->mem != MAP_FAILED) {
-		if (munmap(sink->mem, sizeof(memsink_shared_s)) < 0) {
+		if (memsink_shared_unmap(sink->mem) < 0) {
 			LOG_PERROR("%s-sink: Can't unmap shared memory", sink->name);
 		}
 	}
@@ -87,6 +86,38 @@ void memsink_destroy(memsink_s *sink) {
 	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);
 
@@ -98,24 +129,19 @@ int memsink_server_put(memsink_s *sink, const frame_s *frame) {
 		return 0; // -2
 	}
 
-	if (_flock_timedwait_monotonic(sink->fd, 1) == 0) {
+	if (flock_timedwait_monotonic(sink->fd, 1) == 0) {
 		LOG_VERBOSE("%s-sink: >>>>> Exposing new frame ...", sink->name);
 
-#		define COPY(_field) sink->mem->_field = frame->_field
 		sink->last_id = get_now_id();
 		sink->mem->id = sink->last_id;
-		COPY(used);
-		COPY(width);
-		COPY(height);
-		COPY(format);
-		COPY(stride);
-		COPY(online);
-		COPY(grab_ts);
-		COPY(encode_begin_ts);
-		COPY(encode_end_ts);
-		sink->has_clients = (sink->mem->last_consumed_ts + 10 > get_now_monotonic());
+
 		memcpy(sink->mem->data, frame->data, frame->used);
-#		undef COPY
+		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);
@@ -137,7 +163,7 @@ int memsink_server_put(memsink_s *sink, const frame_s *frame) {
 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 (flock_timedwait_monotonic(sink->fd, sink->timeout) < 0) {
 		if (errno == EWOULDBLOCK) {
 			return -2;
 		}
@@ -145,48 +171,27 @@ int memsink_client_get(memsink_s *sink, frame_s *frame) { // cppcheck-suppress u
 		return -1;
 	}
 
-	bool same = false;
-
-	if (sink->mem->id == sink->last_id) {
-		same = true;
-	} else {
-#		define COPY(_field) frame->_field = sink->mem->_field
-		sink->last_id = sink->mem->id;
-		COPY(width);
-		COPY(height);
-		COPY(format);
-		COPY(stride);
-		COPY(online);
-		COPY(grab_ts);
-		COPY(encode_begin_ts);
-		COPY(encode_end_ts);
-		sink->mem->last_consumed_ts = get_now_monotonic();
-		frame_set_data(frame, sink->mem->data, sink->mem->used);
-#		undef COPY
-	}
-
-	if (flock(sink->fd, LOCK_UN) < 0) {
-		LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
-		return -1;
-	}
-
-	if (same) {
-		usleep(1000);
-		return -2;
-	}
-	return 0;
-}
-
-static 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;
+	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;
 		}
-		usleep(1000);
+		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();
 	}
-	return retval;
+
+	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) 2018-2021  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    #
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <stdatomic.h>
 #include <string.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -37,45 +38,31 @@
 #include "tools.h"
 #include "logging.h"
 #include "frame.h"
+#include "memsinksh.h"
 
 
-#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	id;
-	size_t		used;
-	unsigned	width;
-	unsigned	height;
-	unsigned	format;
-	unsigned	stride;
-	bool		online;
-	long double	grab_ts;
-	long double	encode_begin_ts;
-	long double	encode_end_ts;
-	long double	last_consumed_ts;
-	uint8_t		data[MEMSINK_MAX_DATA];
-} memsink_shared_s;
-
 typedef struct {
 	const char	*name;
 	const char	*obj;
 	bool		server;
 	bool		rm;
+	unsigned	client_ttl; // Only for server
 	unsigned	timeout;
 
 	int					fd;
 	memsink_shared_s	*mem;
 	uint64_t			last_id;
-	bool				has_clients; // Only for server
+	atomic_bool			has_clients; // Only for server
 } memsink_s;
 
 
-memsink_s *memsink_init(const char *name, const char *obj, bool server, mode_t mode, bool rm, unsigned timeout);
+memsink_s *memsink_init(
+	const char *name, const char *obj, bool server,
+	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout);
+
 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) 2018-2021  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    #
@@ -23,31 +23,11 @@
 #pragma once
 
 #include <string.h>
-#include <unistd.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <assert.h>
 
-#include <IL/OMX_Core.h>
-#include <IL/OMX_Component.h>
-
-#include "../../../libs/logging.h"
-
-#include "formatters.h"
+#include <sys/types.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; \
-	}
-
-
-int omx_component_enable_port(OMX_HANDLETYPE *comp, OMX_U32 port);
-int omx_component_disable_port(OMX_HANDLETYPE *comp, OMX_U32 port);
-
-int omx_component_get_portdef(OMX_HANDLETYPE *comp, OMX_PARAM_PORTDEFINITIONTYPE *portdef, OMX_U32 port);
-int omx_component_set_portdef(OMX_HANDLETYPE *comp, OMX_PARAM_PORTDEFINITIONTYPE *portdef);
-
-int omx_component_set_state(OMX_HANDLETYPE *comp, OMX_STATETYPE state);
+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) 2018-2021  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    #
@@ -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) 2018-2021  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) 2018-2021  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    #
@@ -26,24 +26,42 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <string.h>
 #include <unistd.h>
+#include <limits.h>
+#include <locale.h>
 #include <errno.h>
 #include <math.h>
 #include <time.h>
 #include <assert.h>
 
+#include <sys/file.h>
+
+
+#ifdef NDEBUG
+#	error WTF dude? Asserts are good things!
+#endif
+
+#if CHAR_BIT != 8
+#	error There are not 8 bits in a char!
+#endif
+
+
+#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");
 }
 
@@ -102,10 +120,14 @@ INLINE long double get_now_monotonic(void) {
 	return (long double)sec + ((long double)msec) / 1000;
 }
 
-INLINE uint64_t get_now_id(void) {
+INLINE uint64_t get_now_monotonic_u64(void) {
 	struct timespec ts;
 	assert(!clock_gettime(X_CLOCK_MONOTONIC, &ts));
-	uint64_t now = (uint64_t)(ts.tv_nsec / 1000) + (uint64_t)ts.tv_sec * 1000000;
+	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);
 }
 
@@ -123,3 +145,32 @@ INLINE unsigned get_cores_available(void) {
 	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

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -87,6 +87,6 @@ static void _jpeg_error_handler(j_common_ptr jpeg) {
 	char msg[JMSG_LENGTH_MAX];
 
 	(*jpeg_error->mgr.format_message)(jpeg, msg);
-	LOG_ERROR("Can't decompress %s JPEG: %s", jpeg_error->frame->name, msg);
+	LOG_ERROR("Can't decompress JPEG: %s", msg);
 	longjmp(jpeg_error->jmp, -1);
 }

src/libs/unjpeg.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/blank.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -44,7 +44,7 @@ frame_s *blank_frame_init(const char *path) {
 }
 
 static frame_s *_init_internal(void) {
-	frame_s *blank = frame_init("blank_internal");
+	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;
@@ -55,7 +55,7 @@ static frame_s *_init_internal(void) {
 static frame_s *_init_external(const char *path) {
 	FILE *fp = NULL;
 
-	frame_s *blank = frame_init("blank_external");
+	frame_s *blank = frame_init();
 	blank->format = V4L2_PIX_FMT_JPEG;
 
 	if ((fp = fopen(path, "rb")) == NULL) {
@@ -83,7 +83,7 @@ static frame_s *_init_external(const char *path) {
 	}
 #	undef CHUNK_SIZE
 
-	frame_s *decoded = frame_init("blank_external_decoded");
+	frame_s *decoded = frame_init();
 	if (unjpeg(blank, decoded, false) < 0) {
 		frame_destroy(decoded);
 		goto error;

src/ustreamer/blank.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/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) 2018-2021  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/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) 2018-2021  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/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>
@@ -62,9 +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) 2018-2021  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    #
@@ -37,30 +37,30 @@ const char *const 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> \
@@ -87,9 +87,9 @@ const char *const 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) 2018-2021  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/ustreamer/device.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -41,7 +41,7 @@ static const struct {
 	{"UYVY",	V4L2_PIX_FMT_UYVY},
 	{"RGB565",	V4L2_PIX_FMT_RGB565},
 	{"RGB24",	V4L2_PIX_FMT_RGB24},
-	{"JPEG",	V4L2_PIX_FMT_MJPEG},
+	{"MJPEG",	V4L2_PIX_FMT_MJPEG},
 	{"JPEG",	V4L2_PIX_FMT_JPEG},
 };
 
@@ -178,21 +178,15 @@ void device_close(device_s *dev) {
 		for (unsigned index = 0; index < RUN(n_bufs); ++index) {
 #			define HW(_next) RUN(hw_bufs)[index]._next
 
-#			ifdef WITH_OMX
-			if (HW(vcsm_handle) > 0) {
-				vcsm_free(HW(vcsm_handle));
-				HW(vcsm_handle) = -1;
-			}
 			if (HW(dma_fd) >= 0) {
 				close(HW(dma_fd));
 				HW(dma_fd) = -1;
 			}
-#			endif
 
 			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);
+						LOG_PERROR("Can't unmap device buffer=%u", index);
 					}
 				}
 			} else { // V4L2_MEMORY_USERPTR
@@ -200,7 +194,6 @@ void device_close(device_s *dev) {
 					free(HW(raw.data));
 				}
 			}
-			A_MUTEX_DESTROY(&HW(grabbed_mutex));
 
 #			undef HW
 		}
@@ -220,41 +213,26 @@ void device_close(device_s *dev) {
 	}
 }
 
-#ifdef WITH_OMX
-int device_export_to_vcsm(device_s *dev) {
+int device_export_to_dma(device_s *dev) {
 #	define DMA_FD		RUN(hw_bufs[index].dma_fd)
-#	define VCSM_HANDLE	RUN(hw_bufs[index].vcsm_handle)
 
 	for (unsigned index = 0; index < RUN(n_bufs); ++index) {
-		struct v4l2_exportbuffer exp;
-		MEMSET_ZERO(exp);
+		struct v4l2_exportbuffer exp = {0};
 		exp.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 		exp.index = index;
 
-		LOG_DEBUG("Calling ioctl(VIDIOC_EXPBUF) for buffer index=%u ...", index);
+		LOG_DEBUG("Exporting device buffer=%u to DMA ...", index);
 		if (xioctl(RUN(fd), VIDIOC_EXPBUF, &exp) < 0) {
-			LOG_PERROR("Unable to export device buffer index=%u", index);
+			LOG_PERROR("Can't export device buffer=%u to DMA", index);
 			goto error;
 		}
 		DMA_FD = exp.fd;
-
-		LOG_DEBUG("Importing DMA buffer fd=%d into VCSM ...", DMA_FD);
-		int vcsm_handle = vcsm_import_dmabuf(DMA_FD, "v4l2_buf");
-		if (vcsm_handle <= 0) {
-			LOG_PERROR("Unable to import DMA buffer fd=%d into VCSM", DMA_FD);
-			goto error;
-		}
-		VCSM_HANDLE = vcsm_handle;
 	}
 
 	return 0;
 
 	error:
 		for (unsigned index = 0; index < RUN(n_bufs); ++index) {
-			if (VCSM_HANDLE > 0) {
-				vcsm_free(VCSM_HANDLE);
-				VCSM_HANDLE = -1;
-			}
 			if (DMA_FD >= 0) {
 				close(DMA_FD);
 				DMA_FD = -1;
@@ -262,18 +240,16 @@ int device_export_to_vcsm(device_s *dev) {
 		}
 		return -1;
 
-#	undef VCSM_HANDLE
 #	undef DMA_FD
 }
-#endif
 
 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("Calling ioctl(%s) ...", (enable ? "VIDIOC_STREAMON" : "VIDIOC_STREAMOFF"));
+		LOG_DEBUG("%s device capturing ...", (enable ? "Starting" : "Stopping"));
 		if (xioctl(RUN(fd), (enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
-			LOG_PERROR("Unable to %s capturing", (enable ? "start" : "stop"));
+			LOG_PERROR("Can't %s capturing", (enable ? "start" : "stop"));
 			if (enable) {
 				return -1;
 			}
@@ -282,7 +258,7 @@ int device_switch_capturing(device_s *dev, bool enable) {
 		RUN(capturing) = enable;
 		LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
 	}
-    return 0;
+	return 0;
 }
 
 int device_select(device_s *dev, bool *has_read, bool *has_write, bool *has_error) {
@@ -334,23 +310,20 @@ int device_select(device_s *dev, bool *has_read, bool *has_write, bool *has_erro
 int device_grab_buffer(device_s *dev, hw_buffer_s **hw) {
 	*hw = NULL;
 
-	struct v4l2_buffer buf_info;
-	MEMSET_ZERO(buf_info);
-	buf_info.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	buf_info.memory = dev->io_method;
+	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_info) < 0) {
-		LOG_PERROR("Unable to grab device buffer");
+	if (xioctl(RUN(fd), VIDIOC_DQBUF, &buf) < 0) {
+		LOG_PERROR("Can't grab device buffer");
 		return -1;
 	}
 
-	LOG_DEBUG("Grabbed new frame in device buffer: index=%u, bytesused=%u",
-		buf_info.index, buf_info.bytesused);
+	LOG_DEBUG("Grabbed new frame: buffer=%u, bytesused=%u", buf.index, buf.bytesused);
 
-	if (buf_info.index >= RUN(n_bufs)) {
-		LOG_ERROR("V4L2 error: grabbed invalid device buffer: index=%u, n_bufs=%u",
-			buf_info.index, RUN(n_bufs));
+	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;
 	}
 
@@ -359,61 +332,56 @@ int device_grab_buffer(device_s *dev, hw_buffer_s **hw) {
 	// 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_info.bytesused < dev->min_frame_size) {
-		LOG_DEBUG("Dropped too small frame sized %d bytes, assuming it was broken", buf_info.bytesused);
-		LOG_DEBUG("Releasing device buffer index=%u (broken frame) ...", buf_info.index);
-		if (xioctl(RUN(fd), VIDIOC_QBUF, &buf_info) < 0) {
-			LOG_PERROR("Unable to release device buffer index=%u (broken frame)", buf_info.index);
+	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_info.index]._next
+#	define HW(_next) RUN(hw_bufs)[buf.index]._next
 
-	A_MUTEX_LOCK(&HW(grabbed_mutex));
 	if (HW(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(grabbed_mutex));
+		LOG_ERROR("V4L2 error: grabbed device buffer=%u is already used", buf.index);
 		return -1;
 	}
 	HW(grabbed) = true;
-	A_MUTEX_UNLOCK(&HW(grabbed_mutex));
 
-	HW(raw.used) = buf_info.bytesused;
+	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_info), &buf_info, sizeof(struct v4l2_buffer));
+	memcpy(&HW(buf), &buf, sizeof(struct v4l2_buffer));
 	HW(raw.grab_ts) = get_now_monotonic();
 
 #	undef HW
-	*hw = &RUN(hw_bufs[buf_info.index]);
-	return buf_info.index;
+	*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_info.index;
-	LOG_DEBUG("Releasing device buffer index=%u ...", index);
+	const unsigned index = hw->buf.index;
+	LOG_DEBUG("Releasing device buffer=%u ...", index);
 
-	A_MUTEX_LOCK(&hw->grabbed_mutex);
-	if (xioctl(RUN(fd), VIDIOC_QBUF, &hw->buf_info) < 0) {
-		LOG_PERROR("Unable to release device buffer index=%u", index);
-		A_MUTEX_UNLOCK(&hw->grabbed_mutex);
+	if (xioctl(RUN(fd), VIDIOC_QBUF, &hw->buf) < 0) {
+		LOG_PERROR("Can't release device buffer=%u", index);
 		return -1;
 	}
 	hw->grabbed = false;
-	A_MUTEX_UNLOCK(&hw->grabbed_mutex);
 	return 0;
 }
 
 int device_consume_event(device_s *dev) {
 	struct v4l2_event event;
 
-	LOG_DEBUG("Calling ioctl(VIDIOC_DQEVENT) ...");
+	LOG_DEBUG("Consuming V4L2 event ...");
 	if (xioctl(RUN(fd), VIDIOC_DQEVENT, &event) == 0) {
 		switch (event.type) {
 			case V4L2_EVENT_SOURCE_CHANGE:
@@ -430,22 +398,21 @@ int device_consume_event(device_s *dev) {
 }
 
 static int _device_open_check_cap(device_s *dev) {
-	struct v4l2_capability cap;
-	MEMSET_ZERO(cap);
+	struct v4l2_capability cap = {0};
 
-	LOG_DEBUG("Calling ioctl(VIDIOC_QUERYCAP) ...");
+	LOG_DEBUG("Querying device capabilities ...");
 	if (xioctl(RUN(fd), VIDIOC_QUERYCAP, &cap) < 0) {
-		LOG_PERROR("Can't query device (VIDIOC_QUERYCAP)");
+		LOG_PERROR("Can't query device capabilities");
 		return -1;
 	}
 
 	if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
-		LOG_ERROR("Video capture not supported by the device");
+		LOG_ERROR("Video capture is not supported by device");
 		return -1;
 	}
 
 	if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
-		LOG_ERROR("Device does not support streaming IO");
+		LOG_ERROR("Device doesn't support streaming IO");
 		return -1;
 	}
 
@@ -471,20 +438,18 @@ static int _device_open_check_cap(device_s *dev) {
 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");
+		LOG_DEBUG("Using DV-timings");
 
 		if (_device_apply_dv_timings(dev) < 0) {
 			return -1;
 		}
 
-		struct v4l2_event_subscription sub;
-
-		MEMSET_ZERO(sub);
+		struct v4l2_event_subscription sub = {0};
 		sub.type = V4L2_EVENT_SOURCE_CHANGE;
 
-		LOG_DEBUG("Calling ioctl(VIDIOC_SUBSCRIBE_EVENT) ...");
+		LOG_DEBUG("Subscribing to DV-timings events ...")
 		if (xioctl(RUN(fd), VIDIOC_SUBSCRIBE_EVENT, &sub) < 0) {
-			LOG_PERROR("Can't subscribe to V4L2_EVENT_SOURCE_CHANGE");
+			LOG_PERROR("Can't subscribe to DV-timings events");
 			return -1;
 		}
 	}
@@ -492,17 +457,30 @@ static int _device_open_dv_timings(device_s *dev) {
 }
 
 static int _device_apply_dv_timings(device_s *dev) {
-	struct v4l2_dv_timings dv;
-	MEMSET_ZERO(dv);
+	struct v4l2_dv_timings dv = {0};
 
 	LOG_DEBUG("Calling ioctl(VIDIOC_QUERY_DV_TIMINGS) ...");
 	if (xioctl(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
+		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");
+			LOG_PERROR("Failed to set DV-timings");
 			return -1;
 		}
 
@@ -526,8 +504,7 @@ static int _device_apply_dv_timings(device_s *dev) {
 static int _device_open_format(device_s *dev, bool first) {
 	const unsigned stride = align_size(RUN(width), 32) << 1;
 
-	struct v4l2_format fmt;
-	MEMSET_ZERO(fmt);
+	struct v4l2_format fmt = {0};
 	fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	fmt.fmt.pix.width = RUN(width);
 	fmt.fmt.pix.height = RUN(height);
@@ -536,10 +513,10 @@ static int _device_open_format(device_s *dev, bool first) {
 	fmt.fmt.pix.bytesperline = stride;
 
 	// Set format
-	LOG_DEBUG("Calling ioctl(VIDIOC_S_FMT) ...");
+	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("Unable to set pixelformat=%s, stride=%u, resolution=%ux%u",
-			_format_to_string_supported(dev->format), stride, RUN(width), RUN(height));
+		LOG_PERROR("Can't set device format");
 		return -1;
 	}
 
@@ -559,23 +536,23 @@ static int _device_open_format(device_s *dev, bool first) {
 
 	// Check format
 	if (fmt.fmt.pix.pixelformat != dev->format) {
-		LOG_ERROR("Could not obtain the requested pixelformat=%s; driver gave us %s",
+		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 pixelformat=%s", format_str);
+			LOG_INFO("Falling back to format=%s", format_str);
 		} else {
 			char fourcc_str[8];
-			LOG_ERROR("Unsupported pixelformat=%s (fourcc)",
+			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 pixelformat: %s", _format_to_string_supported(RUN(format)));
+	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
@@ -585,16 +562,15 @@ static int _device_open_format(device_s *dev, bool first) {
 static void _device_open_hw_fps(device_s *dev) {
 	RUN(hw_fps) = 0;
 
-	struct v4l2_streamparm setfps;
-	MEMSET_ZERO(setfps);
+	struct v4l2_streamparm setfps = {0};
 	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 
-	LOG_DEBUG("Calling ioctl(VIDIOC_G_PARM) ...");
+	LOG_DEBUG("Querying HW FPS ...");
 	if (xioctl(RUN(fd), VIDIOC_G_PARM, &setfps) < 0) {
-		if (errno == ENOTTY) { // Quiet message for Auvidea B101
+		if (errno == ENOTTY) { // Quiet message for TC358743
 			LOG_INFO("Querying HW FPS changing is not supported");
 		} else {
-			LOG_PERROR("Unable to query HW FPS changing");
+			LOG_PERROR("Can't query HW FPS changing");
 		}
 		return;
 	}
@@ -612,7 +588,7 @@ static void _device_open_hw_fps(device_s *dev) {
 	SETFPS_TPF(denominator) = (dev->desired_fps == 0 ? 255 : dev->desired_fps);
 
 	if (xioctl(RUN(fd), VIDIOC_S_PARM, &setfps) < 0) {
-		LOG_PERROR("Unable to set HW FPS");
+		LOG_PERROR("Can't set HW FPS");
 		return;
 	}
 
@@ -640,15 +616,14 @@ static void _device_open_jpeg_quality(device_s *dev) {
 	unsigned quality = 0;
 
 	if (is_jpeg(RUN(format))) {
-		struct v4l2_jpegcompression comp;
-		MEMSET_ZERO(comp);
+		struct v4l2_jpegcompression comp = {0};
 
 		if (xioctl(RUN(fd), VIDIOC_G_JPEGCOMP, &comp) < 0) {
-			LOG_ERROR("Device does not support setting of HW encoding quality parameters");
+			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("Unable to change MJPG quality for JPEG source with HW pass-through encoder");
+				LOG_ERROR("Can't change MJPEG quality for JPEG source with HW pass-through encoder");
 			} else {
 				quality = dev->jpeg_quality;
 			}
@@ -669,15 +644,14 @@ static int _device_open_io_method(device_s *dev) {
 }
 
 static int _device_open_io_method_mmap(device_s *dev) {
-	struct v4l2_requestbuffers req;
-	MEMSET_ZERO(req);
+	struct v4l2_requestbuffers req = {0};
 	req.count = dev->n_bufs;
 	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	req.memory = V4L2_MEMORY_MMAP;
 
-	LOG_DEBUG("Calling ioctl(VIDIOC_REQBUFS) for 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 V4L2_MEMORY_MMAP", dev->path);
+		LOG_PERROR("Device '%s' doesn't support MMAP method", dev->path);
 		return -1;
 	}
 
@@ -692,40 +666,34 @@ static int _device_open_io_method_mmap(device_s *dev) {
 
 	A_CALLOC(RUN(hw_bufs), req.count);
 	for (RUN(n_bufs) = 0; RUN(n_bufs) < req.count; ++RUN(n_bufs)) {
-		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 = 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_info) < 0) {
+		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
 
-#		ifdef WITH_OMX
 		HW(dma_fd) = -1;
-		HW(vcsm_handle) = -1;
-#		endif
 
-		A_MUTEX_INIT(&HW(grabbed_mutex));
-
-		LOG_DEBUG("Mapping device buffer %u ...", RUN(n_bufs));
+		LOG_DEBUG("Mapping device buffer=%u ...", RUN(n_bufs));
 		if ((HW(raw.data) = mmap(
 			NULL,
-			buf_info.length,
+			buf.length,
 			PROT_READ | PROT_WRITE,
 			MAP_SHARED,
 			RUN(fd),
-			buf_info.m.offset
+			buf.m.offset
 		)) == MAP_FAILED) {
-			LOG_PERROR("Can't map device buffer %u", RUN(n_bufs));
+			LOG_PERROR("Can't map device buffer=%u", RUN(n_bufs));
 			return -1;
 		}
-		HW(raw.allocated) = buf_info.length;
+		HW(raw.allocated) = buf.length;
 
 #		undef HW
 	}
@@ -733,15 +701,14 @@ static int _device_open_io_method_mmap(device_s *dev) {
 }
 
 static int _device_open_io_method_userptr(device_s *dev) {
-	struct v4l2_requestbuffers req;
-	MEMSET_ZERO(req);
+	struct v4l2_requestbuffers req = {0};
 	req.count = dev->n_bufs;
 	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	req.memory = V4L2_MEMORY_USERPTR;
 
-	LOG_DEBUG("Calling ioctl(VIDIOC_REQBUFS) for 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 V4L2_MEMORY_USERPTR", dev->path);
+		LOG_PERROR("Device '%s' doesn't support USERPTR method", dev->path);
 		return -1;
 	}
 
@@ -771,18 +738,17 @@ static int _device_open_io_method_userptr(device_s *dev) {
 
 static int _device_open_queue_buffers(device_s *dev) {
 	for (unsigned index = 0; index < RUN(n_bufs); ++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;
+		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_info.m.userptr = (unsigned long)RUN(hw_bufs)[index].raw.data;
-			buf_info.length = RUN(hw_bufs)[index].raw.allocated;
+			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_info) < 0) {
+		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;
 		}
@@ -792,7 +758,7 @@ static int _device_open_queue_buffers(device_s *dev) {
 
 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 Auvidea B101
+	// у некоторых устройств, например TC358743
 	if (
 		width == 0 || width > VIDEO_MAX_WIDTH
 		|| height == 0 || height > VIDEO_MAX_HEIGHT
@@ -852,6 +818,7 @@ static void _device_apply_controls(device_s *dev) {
 	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);
 
@@ -890,8 +857,7 @@ static void _device_set_control(
 		return;
 	}
 
-	struct v4l2_control ctl;
-	MEMSET_ZERO(ctl);
+	struct v4l2_control ctl = {0};
 	ctl.id = cid;
 	ctl.value = value;
 
@@ -905,12 +871,12 @@ static void _device_set_control(
 }
 
 static const char *_format_to_string_nullable(unsigned format) {
-    for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
+	for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
 		if (format == _FORMATS[index].format) {
 			return _FORMATS[index].name;
 		}
-    }
-    return NULL;
+	}
+	return NULL;
 }
 
 static const char *_format_to_string_supported(unsigned format) {

src/ustreamer/device.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -40,9 +40,6 @@
 #include <pthread.h>
 #include <linux/videodev2.h>
 #include <linux/v4l2-controls.h>
-#ifdef WITH_OMX
-#	include <interface/vcsm/user-vcsm.h>
-#endif
 
 #include "../libs/tools.h"
 #include "../libs/logging.h"
@@ -64,24 +61,17 @@
 #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"
 
 
 typedef struct {
-	frame_s raw;
-
-	struct v4l2_buffer buf_info;
-
-#	ifdef WITH_OMX
-	int dma_fd;
-	int vcsm_handle;
-#	endif
-
-	pthread_mutex_t grabbed_mutex;
-	bool			grabbed;
+	frame_s				raw;
+	struct v4l2_buffer	buf;
+	int					dma_fd;
+	bool				grabbed;
 } hw_buffer_s;
 
 typedef struct {
@@ -122,6 +112,7 @@ typedef struct {
 	control_s white_balance;
 	control_s gain;
 	control_s color_effect;
+	control_s rotate;
 	control_s flip_vertical;
 	control_s flip_horizontal;
 } controls_s;
@@ -158,9 +149,7 @@ int device_parse_io_method(const char *str);
 int device_open(device_s *dev);
 void device_close(device_s *dev);
 
-#ifdef WITH_OMX
-int device_export_to_vcsm(device_s *dev);
-#endif
+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);

src/ustreamer/encoder.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -27,16 +27,18 @@ static const struct {
 	const char *name;
 	const encoder_type_e type;
 } _ENCODER_TYPES[] = {
-	{"CPU",		ENCODER_TYPE_CPU},
-	{"HW",		ENCODER_TYPE_HW},
-#	ifdef WITH_OMX
-	{"OMX",		ENCODER_TYPE_OMX},
-#	endif
-	{"NOOP",	ENCODER_TYPE_NOOP},
+	{"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(worker_s *wr, void *v_enc);
+static void *_worker_job_init(void *v_enc);
 static void _worker_job_destroy(void *v_job);
 static bool _worker_run_job(worker_s *wr);
 
@@ -60,16 +62,14 @@ encoder_s *encoder_init(void) {
 }
 
 void encoder_destroy(encoder_s *enc) {
-#	ifdef WITH_OMX
-	if (ER(omxs)) {
-		for (unsigned index = 0; index < ER(n_omxs); ++index) {
-			if (ER(omxs[index])) {
-				omx_encoder_destroy(ER(omxs[index]));
+	if (ER(m2ms)) {
+		for (unsigned index = 0; index < ER(n_m2ms); ++index) {
+			if (ER(m2ms[index])) {
+				m2m_encoder_destroy(ER(m2ms[index]));
 			}
 		}
-		free(ER(omxs));
+		free(ER(m2ms));
 	}
-#	endif
 	A_MUTEX_DESTROY(&ER(mutex));
 	free(enc->run);
 	free(enc);
@@ -113,63 +113,30 @@ workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev) {
 		}
 		quality = DR(jpeg_quality);
 		n_workers = 1;
-	}
-#	ifdef WITH_OMX
-	else if (type == ENCODER_TYPE_OMX) {
-		if (align_size(DR(width), 32) != DR(width)) {
-			LOG_INFO("Switching to CPU encoder: OMX can't handle width=%u ...", DR(width));
-			goto use_cpu;
+
+	} 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);
 		}
-
-		LOG_DEBUG("Preparing OMX encoder ...");
-
-		if (n_workers > OMX_MAX_ENCODERS) {
-			LOG_INFO("OMX encoder sets limit for worker threads: %u", OMX_MAX_ENCODERS);
-			n_workers = OMX_MAX_ENCODERS;
-		}
-
-		if (ER(omxs) == NULL) {
-			A_CALLOC(ER(omxs), OMX_MAX_ENCODERS);
-		}
-
-		// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
-		for (; ER(n_omxs) < n_workers; ++ER(n_omxs)) {
-			if ((ER(omxs[ER(n_omxs)]) = omx_encoder_init()) == NULL) {
-				LOG_ERROR("Can't initialize OMX encoder, falling back to CPU");
-				goto force_cpu;
+		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);
 			}
 		}
 
-		frame_s frame;
-		MEMSET_ZERO(frame);
-		frame.width = DR(width);
-		frame.height = DR(height);
-		frame.format = DR(format);
-		frame.stride = DR(stride);
-
-		for (unsigned index = 0; index < ER(n_omxs); ++index) {
-			int omx_error = omx_encoder_prepare(ER(omxs[index]), &frame, quality);
-			if (omx_error == -2) {
-				goto use_cpu;
-			} else if (omx_error < 0) {
-				goto force_cpu;
-			}
-		}
-	}
-#	endif
-	else if (type == ENCODER_TYPE_NOOP) {
+	} else if (type == ENCODER_TYPE_NOOP) {
 		n_workers = 1;
 		quality = 0;
 	}
 
 	goto ok;
 
-#	ifdef WITH_OMX
-	force_cpu:
-		LOG_ERROR("Forced CPU encoder permanently");
-		cpu_forced = true;
-#	endif
-
 	use_cpu:
 		type = ENCODER_TYPE_CPU;
 		quality = dev->jpeg_quality;
@@ -212,23 +179,17 @@ void encoder_get_runtime_params(encoder_s *enc, encoder_type_e *type, unsigned *
 	A_MUTEX_UNLOCK(&ER(mutex));
 }
 
-static void *_worker_job_init(worker_s *wr, void *v_enc) {
+static void *_worker_job_init(void *v_enc) {
 	encoder_job_s *job;
 	A_CALLOC(job, 1);
 	job->enc = (encoder_s *)v_enc;
-
-	const size_t dest_role_len = strlen(wr->name) + 16;
-	A_CALLOC(job->dest_role, dest_role_len);
-	snprintf(job->dest_role, dest_role_len, "%s_dest", wr->name);
-	job->dest = frame_init(job->dest_role);
-
+	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->dest_role);
 	free(job);
 }
 
@@ -241,55 +202,47 @@ static bool _worker_run_job(worker_s *wr) {
 
 #	define ER(_next) job->enc->run->_next
 
-	LOG_DEBUG("Worker %s compressing JPEG from buffer %u ...", wr->name, job->hw->buf_info.index);
-
 	assert(ER(type) != ENCODER_TYPE_UNKNOWN);
-	assert(src->used > 0);
-
-	frame_copy_meta(src, dest);
-	dest->format = V4L2_PIX_FMT_JPEG;
-	dest->stride = 0;
-	dest->encode_begin_ts = get_now_monotonic();
-	dest->used = 0;
 
 	if (ER(type) == ENCODER_TYPE_CPU) {
-		LOG_VERBOSE("Compressing buffer using 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 buffer using HW (just copying)");
+		LOG_VERBOSE("Compressing JPEG using HW (just copying): worker=%s, buffer=%u",
+			wr->name, job->hw->buf.index);
 		hw_encoder_compress(src, dest);
-	}
-#	ifdef WITH_OMX
-	else if (ER(type) == ENCODER_TYPE_OMX) {
-		LOG_VERBOSE("Compressing buffer using OMX");
-		if (omx_encoder_compress(ER(omxs[wr->number]), src, dest) < 0) {
+
+	} 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;
 		}
-	}
-#	endif
-	else if (ER(type) == ENCODER_TYPE_NOOP) {
-		LOG_VERBOSE("Compressing buffer using NOOP (do nothing)");
+
+	} 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();
 	}
 
-	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_info.index);
+		job->hw->buf.index);
 
 	return true;
 
-#	ifdef WITH_OMX
 	error:
-		LOG_ERROR("Compression failed: worker=%s, buffer=%u", wr->name, job->hw->buf_info.index);
+		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;
-#	endif
 
 #	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) 2018-2021  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    #
@@ -37,30 +37,20 @@
 
 #include "device.h"
 #include "workers.h"
+#include "m2m.h"
 
 #include "encoders/cpu/encoder.h"
 #include "encoders/hw/encoder.h"
 
-#ifdef WITH_OMX
-#	include "encoders/omx/encoder.h"
-#	define ENCODER_TYPES_OMX_HINT ", OMX"
-#else
-#	define ENCODER_TYPES_OMX_HINT ""
-#endif
 
-
-#define ENCODER_TYPES_STR \
-	"CPU, HW" \
-	ENCODER_TYPES_OMX_HINT \
-	", NOOP"
+#define ENCODER_TYPES_STR "CPU, HW, M2M-VIDEO, M2M-IMAGE, NOOP"
 
 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;
 
@@ -70,15 +60,14 @@ typedef struct {
 	bool			cpu_forced;
 	pthread_mutex_t	mutex;
 
-#	ifdef WITH_OMX
-	unsigned		n_omxs;
-	omx_encoder_s	**omxs;
-#	endif
+	unsigned		n_m2ms;
+	m2m_encoder_s	**m2ms;
 } encoder_runtime_s;
 
 typedef struct {
 	encoder_type_e	type;
 	unsigned		n_workers;
+	char			*m2m_path;
 
 	encoder_runtime_s *run;
 } encoder_s;
@@ -86,7 +75,6 @@ typedef struct {
 typedef struct {
 	encoder_s	*enc;
 	hw_buffer_s	*hw;
-	char		*dest_role;
 	frame_s		*dest;
 } encoder_job_s;
 

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) 2018-2021  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    #
@@ -50,6 +50,8 @@ static void _jpeg_term_destination(j_compress_ptr jpeg);
 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;
 
@@ -85,7 +87,7 @@ void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality) {
 	jpeg_finish_compress(&jpeg);
 	jpeg_destroy_compress(&jpeg);
 
-	assert(dest->used > 0);
+	frame_encoding_end(dest);
 }
 
 static void _jpeg_set_dest_frame(j_compress_ptr jpeg, frame_s *frame) {

src/ustreamer/encoders/cpu/encoder.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/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) 2018-2021  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    #
@@ -38,6 +38,8 @@ void hw_encoder_compress(const frame_s *src, frame_s *dest) {
 }
 
 void _copy_plus_huffman(const frame_s *src, frame_s *dest) {
+	frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
+
 	if (!_is_huffman(src->data)) {
 		const uint8_t *src_ptr = src->data;
 		const uint8_t *src_end = src->data + src->used;
@@ -55,9 +57,12 @@ void _copy_plus_huffman(const frame_s *src, frame_s *dest) {
 		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 {
 		frame_set_data(dest, src->data, src->used);
 	}
+
+	frame_encoding_end(dest);
 }
 
 static bool _is_huffman(const uint8_t *data) {

src/ustreamer/encoders/hw/encoder.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/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) 2018-2021  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/ustreamer/encoders/omx/component.c

@@ -1,154 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018-2021  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"
-
-
-static int _omx_component_wait_port_changed(OMX_HANDLETYPE *comp, OMX_U32 port, OMX_BOOL enabled);
-static int _omx_component_wait_state_changed(OMX_HANDLETYPE *comp, OMX_STATETYPE wanted);
-
-
-int omx_component_enable_port(OMX_HANDLETYPE *comp, OMX_U32 port) {
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Enabling OMX port %u ...", port);
-	if ((error = OMX_SendCommand(*comp, OMX_CommandPortEnable, port, NULL)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't enable OMX port %u", port);
-		return -1;
-	}
-	return _omx_component_wait_port_changed(comp, port, OMX_TRUE);
-}
-
-int omx_component_disable_port(OMX_HANDLETYPE *comp, OMX_U32 port) {
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Disabling OMX port %u ...", port);
-	if ((error = OMX_SendCommand(*comp, OMX_CommandPortDisable, port, NULL)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't disable OMX port %u", port);
-		return -1;
-	}
-	return _omx_component_wait_port_changed(comp, port, OMX_FALSE);
-}
-
-int omx_component_get_portdef(OMX_HANDLETYPE *comp, 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(*comp, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't get OMX port %u definition", port);
-		return -1;
-	}
-	return 0;
-}
-
-int omx_component_set_portdef(OMX_HANDLETYPE *comp, OMX_PARAM_PORTDEFINITIONTYPE *portdef) {
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Writing OMX port %u definition ...", portdef->nPortIndex);
-	if ((error = OMX_SetParameter(*comp, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Can't set OMX port %u definition", portdef->nPortIndex);
-		return -1;
-	}
-	return 0;
-}
-
-int omx_component_set_state(OMX_HANDLETYPE *comp, OMX_STATETYPE state) {
-	const char *state_str = omx_state_to_string(state);
-	OMX_ERRORTYPE error;
-
-	LOG_DEBUG("Switching component state to %s ...", state_str);
-
-	int retries = 50;
-	do {
-		error = OMX_SendCommand(*comp, OMX_CommandStateSet, state, NULL);
-		if (error == OMX_ErrorNone) {
-			return _omx_component_wait_state_changed(comp, state);
-		} else if (error == OMX_ErrorInsufficientResources && retries) {
-			// Иногда железо не инициализируется, хз почему, просто ретраим, со второй попытки сработает
-			if (retries > 45) {
-				LOG_VERBOSE("Can't switch OMX component state to %s, need to retry: %s",
-					state_str, omx_error_to_string(error));
-			} else {
-				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 _omx_component_wait_port_changed(OMX_HANDLETYPE *comp, OMX_U32 port, OMX_BOOL enabled) {
-	OMX_ERRORTYPE error;
-
-	OMX_PARAM_PORTDEFINITIONTYPE portdef;
-	OMX_INIT_STRUCTURE(portdef);
-	portdef.nPortIndex = port;
-
-	int retries = 50;
-	do {
-		if ((error = OMX_GetParameter(*comp, 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 _omx_component_wait_state_changed(OMX_HANDLETYPE *comp, OMX_STATETYPE wanted) {
-	OMX_ERRORTYPE error;
-	OMX_STATETYPE state;
-
-	int retries = 50;
-	do {
-		if ((error = OMX_GetState(*comp, &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/ustreamer/encoders/omx/encoder.c

@@ -1,479 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018-2021  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 OMX_U32 _INPUT_PORT = 340;
-static const OMX_U32 _OUTPUT_PORT = 341;
-
-
-static int _vcos_semwait(VCOS_SEMAPHORE_T *sem);
-static int _omx_init_component(omx_encoder_s *omx);
-static int _omx_init_disable_ports(omx_encoder_s *omx);
-static int _omx_setup_input(omx_encoder_s *omx, const frame_s *frame);
-static int _omx_setup_output(omx_encoder_s *omx, unsigned quality);
-static int _omx_encoder_clear_ports(omx_encoder_s *omx);
-
-static OMX_ERRORTYPE _omx_event_handler(
-	UNUSED OMX_HANDLETYPE comp,
-	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 comp,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buf);
-
-static OMX_ERRORTYPE _omx_output_available_handler(
-	UNUSED OMX_HANDLETYPE comp,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buf);
-
-
-omx_encoder_s *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
-
-	LOG_INFO("Initializing OMX encoder ...");
-
-	omx_encoder_s *omx;
-	A_CALLOC(omx, 1);
-
-	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(omx_encoder_s *omx) {
-	LOG_INFO("Destroying OMX encoder ...");
-
-	omx_component_set_state(&omx->comp, OMX_StateIdle);
-	_omx_encoder_clear_ports(omx);
-	omx_component_set_state(&omx->comp, OMX_StateLoaded);
-
-	if (omx->i_handler_sem) {
-		vcos_semaphore_delete(&omx->handler_sem);
-	}
-
-	if (omx->i_encoder) {
-		OMX_ERRORTYPE error;
-		if ((error = OMX_FreeHandle(omx->comp)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't free OMX.broadcom.image_encode");
-		}
-	}
-
-	free(omx);
-}
-
-int omx_encoder_prepare(omx_encoder_s *omx, const frame_s *frame, unsigned quality) {
-	if (align_size(frame->width, 32) != frame->width && frame_get_padding(frame) == 0) {
-		LOG_ERROR("%u %u", frame->width, frame->stride);
-		LOG_ERROR("OMX encoder can't handle unaligned width");
-		return -2;
-	}
-	if (omx_component_set_state(&omx->comp, OMX_StateIdle) < 0) {
-		return -1;
-	}
-	if (_omx_encoder_clear_ports(omx) < 0) {
-		return -1;
-	}
-	if (_omx_setup_input(omx, frame) < 0) {
-		return -1;
-	}
-	if (_omx_setup_output(omx, quality) < 0) {
-		return -1;
-	}
-	if (omx_component_set_state(&omx->comp, OMX_StateExecuting) < 0) {
-		return -1;
-	}
-	return 0;
-}
-
-int omx_encoder_compress(omx_encoder_s *omx, const frame_s *src, frame_s *dest) {
-#	define IN(_next)	omx->input_buf->_next
-#	define OUT(_next)	omx->output_buf->_next
-
-	OMX_ERRORTYPE error;
-
-	if ((error = OMX_FillThisBuffer(omx->comp, omx->output_buf)) != OMX_ErrorNone) {
-		LOG_ERROR_OMX(error, "Failed to request filling of the output buffer on encoder");
-		return -1;
-	}
-
-	dest->width = align_size(src->width, 32);
-	dest->used = 0;
-
-	omx->output_available = false;
-	omx->input_required = true;
-
-	size_t slice_size = (IN(nAllocLen) < src->used ? IN(nAllocLen) : src->used);
-	size_t pos = 0;
-
-	while (true) {
-		if (omx->failed) {
-			return -1;
-		}
-
-		if (omx->output_available) {
-			omx->output_available = false;
-
-			frame_append_data(dest, OUT(pBuffer) + OUT(nOffset), OUT(nFilledLen));
-
-			if (OUT(nFlags) & OMX_BUFFERFLAG_ENDOFFRAME) {
-				OUT(nFlags) = 0;
-				break;
-			}
-
-			if ((error = OMX_FillThisBuffer(omx->comp, omx->output_buf)) != 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 == src->used) {
-				continue;
-			}
-
-			memcpy(IN(pBuffer), src->data + pos, slice_size);
-			IN(nOffset) = 0;
-			IN(nFilledLen) = slice_size;
-
-			pos += slice_size;
-
-			if (pos + slice_size > src->used) {
-				slice_size = src->used - pos;
-			}
-
-			if ((error = OMX_EmptyThisBuffer(omx->comp, omx->input_buf)) != OMX_ErrorNone) {
-				LOG_ERROR_OMX(error, "Failed to request emptying of the input buffer on encoder");
-				return -1;
-			}
-		}
-
-		if (_vcos_semwait(&omx->handler_sem) != 0) {
-			return -1;
-		}
-	}
-
-#	undef OUT
-#	undef IN
-	return 0;
-}
-
-static int _vcos_semwait(VCOS_SEMAPHORE_T *sem) {
-	// vcos_semaphore_wait() can wait infinite
-	// vcos_semaphore_wait_timeout() is broken by design:
-	//   - https://github.com/pikvm/ustreamer/issues/56
-	//   - https://github.com/raspberrypi/userland/issues/658
-	// CFG_OMX_SEMWAIT_TIMEOUT is ugly busyloop
-	// Три стула.
-
-#	ifdef CFG_OMX_SEMWAIT_TIMEOUT
-	long double deadline_ts = get_now_monotonic() + (long double)CFG_OMX_SEMWAIT_TIMEOUT; // Seconds
-	VCOS_STATUS_T sem_status;
-
-	while (true) {
-		sem_status = vcos_semaphore_trywait(sem);
-		if (sem_status == VCOS_SUCCESS) {
-			return 0;
-		} else if (sem_status != VCOS_EAGAIN || get_now_monotonic() > deadline_ts) {
-			goto error;
-		}
-		usleep(1000);
-	}
-
-	error:
-		switch (sem_status) {
-			case VCOS_EAGAIN: LOG_ERROR("Can't wait VCOS semaphore: EAGAIN (timeout)"); break;
-			case VCOS_EINVAL: LOG_ERROR("Can't wait VCOS semaphore: EINVAL"); break;
-			default: LOG_ERROR("Can't wait VCOS semaphore: %d", sem_status); break;
-		}
-		return -1;
-#	else
-	return (vcos_semaphore_wait(sem) == VCOS_SUCCESS ? 0 : -1);
-#	endif
-}
-
-static int _omx_init_component(omx_encoder_s *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->comp, "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(omx_encoder_s *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->comp, 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->comp, 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 (omx_component_disable_port(&omx->comp, port) < 0) {
-				return -1;
-			}
-		}
-	}
-	return 0;
-}
-
-static int _omx_setup_input(omx_encoder_s *omx, const frame_s *frame) {
-	LOG_DEBUG("Setting up OMX JPEG input port ...");
-
-	OMX_ERRORTYPE error;
-	OMX_PARAM_PORTDEFINITIONTYPE portdef;
-
-	if (omx_component_get_portdef(&omx->comp, &portdef, _INPUT_PORT) < 0) {
-		LOG_ERROR("... first");
-		return -1;
-	}
-
-#	define IFMT(_next) portdef.format.image._next
-	IFMT(nFrameWidth) = align_size(frame->width, 32);
-	IFMT(nFrameHeight) = frame->height;
-	IFMT(nStride) = align_size(frame->width, 32) << 1;
-	IFMT(nSliceHeight) = align_size(frame->height, 16);
-	IFMT(bFlagErrorConcealment) = OMX_FALSE;
-	IFMT(eCompressionFormat) = OMX_IMAGE_CodingUnused;
-	portdef.nBufferSize = ((frame->width * frame->height) << 1) * 2;
-	switch (frame->format) {
-		// https://www.fourcc.org/yuv.php
-		// Also see comments inside OMX_IVCommon.h
-		case V4L2_PIX_FMT_YUYV:		IFMT(eColorFormat) = OMX_COLOR_FormatYCbYCr; break;
-		case V4L2_PIX_FMT_UYVY:		IFMT(eColorFormat) = OMX_COLOR_FormatCbYCrY; break;
-		case V4L2_PIX_FMT_RGB565:	IFMT(eColorFormat) = OMX_COLOR_Format16bitRGB565; break;
-		case V4L2_PIX_FMT_RGB24:	IFMT(eColorFormat) = OMX_COLOR_Format24bitRGB888; break;
-		// 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 pixelformat");
-	}
-#	undef IFMT
-
-	if (omx_component_set_portdef(&omx->comp, &portdef) < 0) {
-		return -1;
-	}
-
-	if (omx_component_get_portdef(&omx->comp, &portdef, _INPUT_PORT) < 0) {
-		LOG_ERROR("... second");
-		return -1;
-	}
-
-	if (omx_component_enable_port(&omx->comp, _INPUT_PORT) < 0) {
-		return -1;
-	}
-	omx->i_input_port_enabled = true;
-
-	if ((error = OMX_AllocateBuffer(omx->comp, &omx->input_buf, _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(omx_encoder_s *omx, unsigned quality) {
-	LOG_DEBUG("Setting up OMX JPEG output port ...");
-
-	OMX_ERRORTYPE error;
-	OMX_PARAM_PORTDEFINITIONTYPE portdef;
-
-	if (omx_component_get_portdef(&omx->comp, &portdef, _OUTPUT_PORT) < 0) {
-		LOG_ERROR("... first");
-		return -1;
-	}
-
-#	define OFMT(_next) portdef.format.image._next
-	OFMT(bFlagErrorConcealment) = OMX_FALSE;
-	OFMT(eCompressionFormat) = OMX_IMAGE_CodingJPEG;
-	OFMT(eColorFormat) = OMX_COLOR_FormatYCbYCr;
-#	undef OFMT
-
-	if (omx_component_set_portdef(&omx->comp, &portdef) < 0) {
-		return -1;
-	}
-
-	if (omx_component_get_portdef(&omx->comp, &portdef, _OUTPUT_PORT) < 0) {
-		LOG_ERROR("... second");
-		return -1;
-	}
-
-#	define SET_PARAM(_key, _value) { \
-			if ((error = OMX_SetParameter(omx->comp, OMX_IndexParam##_key, _value)) != OMX_ErrorNone) { \
-				LOG_ERROR_OMX(error, "Can't set OMX param %s", #_key); \
-				return -1; \
-			} \
-		}
-
-	OMX_CONFIG_BOOLEANTYPE exif;
-	OMX_INIT_STRUCTURE(exif);
-	exif.bEnabled = OMX_FALSE;
-	SET_PARAM(BrcmDisableEXIF, &exif);
-
-	OMX_PARAM_IJGSCALINGTYPE ijg;
-	OMX_INIT_STRUCTURE(ijg);
-	ijg.nPortIndex = _OUTPUT_PORT;
-	ijg.bEnabled = OMX_TRUE;
-	SET_PARAM(BrcmEnableIJGTableScaling, &ijg);
-
-	OMX_IMAGE_PARAM_QFACTORTYPE qfactor;
-	OMX_INIT_STRUCTURE(qfactor);
-	qfactor.nPortIndex = _OUTPUT_PORT;
-	qfactor.nQFactor = quality;
-	SET_PARAM(QFactor, &qfactor);
-
-#	undef SET_PARAM
-
-	if (omx_component_enable_port(&omx->comp, _OUTPUT_PORT) < 0) {
-		return -1;
-	}
-	omx->i_output_port_enabled = true;
-
-	if ((error = OMX_AllocateBuffer(omx->comp, &omx->output_buf, _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(omx_encoder_s *omx) {
-	OMX_ERRORTYPE error;
-	int retval = 0;
-
-	if (omx->i_output_port_enabled) {
-		retval -= omx_component_disable_port(&omx->comp, _OUTPUT_PORT);
-		omx->i_output_port_enabled = false;
-	}
-	if (omx->i_input_port_enabled) {
-		retval -= omx_component_disable_port(&omx->comp, _INPUT_PORT);
-		omx->i_input_port_enabled = false;
-	}
-
-	if (omx->input_buf) {
-		if ((error = OMX_FreeBuffer(omx->comp, _INPUT_PORT, omx->input_buf)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't free OMX JPEG input buffer");
-			// retval -= 1;
-		}
-		omx->input_buf = NULL;
-	}
-	if (omx->output_buf) {
-		if ((error = OMX_FreeBuffer(omx->comp, _OUTPUT_PORT, omx->output_buf)) != OMX_ErrorNone) {
-			LOG_ERROR_OMX(error, "Can't free OMX JPEG output buffer");
-			// retval -= 1;
-		}
-		omx->output_buf = NULL;
-	}
-	return retval;
-}
-
-static OMX_ERRORTYPE _omx_event_handler(
-	UNUSED OMX_HANDLETYPE comp,
-	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
-
-	omx_encoder_s *omx = (omx_encoder_s *)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 comp,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buf) {
-
-	// Called by OMX when the encoder component requires
-	// the input buffer to be filled with RAW image data
-
-	omx_encoder_s *omx = (omx_encoder_s *)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 comp,
-	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buf) {
-
-	// Called by OMX when the encoder component has filled
-	// the output buffer with JPEG data
-
-	omx_encoder_s *omx = (omx_encoder_s *)v_omx;
-
-	omx->output_available = true;
-	assert(vcos_semaphore_post(&omx->handler_sem) == VCOS_SUCCESS);
-	return OMX_ErrorNone;
-}

src/ustreamer/encoders/omx/formatters.c

@@ -1,95 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018-2021  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"
-
-
-#define CASE_TO_STRING(_value) \
-	case _value: { return #_value; }
-
-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
-		default: break;
-	}
-	assert(0 && "Unsupported OMX state");
-}
-
-#undef CASE_TO_STRING

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) 2018-2021  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    #
@@ -23,7 +23,7 @@
 #include "gpio.h"
 
 
-gpio_s gpio = {
+gpio_s us_gpio = {
 	.path = "/dev/gpiochip0",
 	.consumer_prefix = "ustreamer",
 
@@ -51,42 +51,42 @@ 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(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); \
@@ -94,19 +94,18 @@ int gpio_inner_set(gpio_output_s *output, bool state) {
 		retval = -1;
 	}
 
-	A_MUTEX_UNLOCK(&gpio.mutex);
+	A_MUTEX_UNLOCK(&us_gpio.mutex);
 	return retval;
 }
 
 static void _gpio_output_init(gpio_output_s *output) {
-	assert(gpio.chip);
+	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);

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) 2018-2021  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    #
@@ -56,7 +56,7 @@ typedef struct {
 } gpio_s;
 
 
-extern gpio_s gpio;
+extern gpio_s us_gpio;
 
 
 void gpio_init(void);
@@ -73,15 +73,15 @@ int gpio_inner_set(gpio_output_s *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/encoder.c

@@ -1,391 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018-2021  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 void _h264_encoder_cleanup(h264_encoder_s *enc);
-static int _h264_encoder_compress_raw(h264_encoder_s *enc, const frame_s *src, int src_vcsm_handle, frame_s *dest, bool force_key);
-
-static void _mmal_callback(MMAL_WRAPPER_T *wrapper);
-static const char *_mmal_error_to_string(MMAL_STATUS_T error);
-
-
-#define LOG_ERROR_MMAL(_error, _msg, ...) { \
-		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, _mmal_error_to_string(_error)); \
-	}
-
-
-h264_encoder_s *h264_encoder_init(unsigned bitrate, unsigned gop, unsigned fps) {
-	LOG_INFO("H264: Initializing MMAL encoder ...");
-	LOG_INFO("H264: Using bitrate: %u Kbps", bitrate);
-	LOG_INFO("H264: Using GOP: %u", gop);
-
-	h264_encoder_s *enc;
-	A_CALLOC(enc, 1);
-	enc->bitrate = bitrate; // Kbps
-	enc->gop = gop; // Interval between keyframes
-	enc->fps = fps;
-
-	enc->last_online = -1;
-
-	if (vcos_semaphore_create(&enc->handler_sem, "h264_handler_sem", 0) != VCOS_SUCCESS) {
-		LOG_PERROR("H264: Can't create VCOS semaphore");
-		goto error;
-	}
-	enc->i_handler_sem = true;
-
-	MMAL_STATUS_T error = mmal_wrapper_create(&enc->wrapper, MMAL_COMPONENT_DEFAULT_VIDEO_ENCODER);
-	if (error != MMAL_SUCCESS) {
-		LOG_ERROR_MMAL(error, "H264: Can't create MMAL wrapper");
-		enc->wrapper = NULL;
-		goto error;
-	}
-	enc->wrapper->user_data = (void *)enc;
-	enc->wrapper->callback = _mmal_callback;
-
-	return enc;
-
-	error:
-		h264_encoder_destroy(enc);
-		return NULL;
-}
-
-void h264_encoder_destroy(h264_encoder_s *enc) {
-	LOG_INFO("H264: Destroying MMAL encoder ...");
-
-	_h264_encoder_cleanup(enc);
-
-	if (enc->wrapper) {
-		MMAL_STATUS_T error = mmal_wrapper_destroy(enc->wrapper);
-		if (error != MMAL_SUCCESS) {
-			LOG_ERROR_MMAL(error, "H264: Can't destroy MMAL encoder");
-		}
-	}
-
-	if (enc->i_handler_sem) {
-		vcos_semaphore_delete(&enc->handler_sem);
-	}
-
-	free(enc);
-}
-
-bool h264_encoder_is_prepared_for(h264_encoder_s *enc, const frame_s *frame, bool zero_copy) {
-#	define EQ(_field) (enc->_field == frame->_field)
-	return (EQ(width) && EQ(height) && EQ(format) && EQ(stride) && (enc->zero_copy == zero_copy));
-#	undef EQ
-}
-
-int h264_encoder_prepare(h264_encoder_s *enc, const frame_s *frame, bool zero_copy) {
-	LOG_INFO("H264: Configuring MMAL encoder: zero_copy=%d ...", zero_copy);
-
-	_h264_encoder_cleanup(enc);
-
-	enc->width = frame->width;
-	enc->height = frame->height;
-	enc->format = frame->format;
-	enc->stride = frame->stride;
-	enc->zero_copy = zero_copy;
-
-	if (align_size(frame->width, 32) != frame->width && frame_get_padding(frame) == 0) {
-		LOG_ERROR("H264: MMAL encoder can't handle unaligned width");
-		goto error;
-	}
-
-	MMAL_STATUS_T error;
-
-#	define PREPARE_PORT(_id) { \
-			enc->_id##_port = enc->wrapper->_id[0]; \
-			if (enc->_id##_port->is_enabled) { \
-				if ((error = mmal_wrapper_port_disable(enc->_id##_port)) != MMAL_SUCCESS) { \
-					LOG_ERROR_MMAL(error, "H264: Can't disable MMAL %s port while configuring", #_id); \
-					goto error; \
-				} \
-			} \
-		}
-
-#	define COMMIT_PORT(_id) { \
-			if ((error = mmal_port_format_commit(enc->_id##_port)) != MMAL_SUCCESS) { \
-				LOG_ERROR_MMAL(error, "H264: Can't commit MMAL %s port", #_id); \
-				goto error; \
-			} \
-		}
-
-#	define SET_PORT_PARAM(_id, _type, _key, _value) { \
-			if ((error = mmal_port_parameter_set_##_type(enc->_id##_port, MMAL_PARAMETER_##_key, _value)) != MMAL_SUCCESS) { \
-				LOG_ERROR_MMAL(error, "H264: Can't set %s for the %s port", #_key, #_id); \
-				goto error; \
-			} \
-		}
-
-#	define ENABLE_PORT(_id) { \
-			if ((error = mmal_wrapper_port_enable(enc->_id##_port, MMAL_WRAPPER_FLAG_PAYLOAD_ALLOCATE)) != MMAL_SUCCESS) { \
-				LOG_ERROR_MMAL(error, "H264: Can't enable MMAL %s port", #_id); \
-				goto error; \
-			} \
-		}
-
-	{
-		PREPARE_PORT(input);
-
-#		define IFMT(_next) enc->input_port->format->_next
-		IFMT(type) = MMAL_ES_TYPE_VIDEO;
-		switch (frame->format) {
-			case V4L2_PIX_FMT_YUYV:		IFMT(encoding) = MMAL_ENCODING_YUYV; break;
-			case V4L2_PIX_FMT_UYVY:		IFMT(encoding) = MMAL_ENCODING_UYVY; break;
-			case V4L2_PIX_FMT_RGB565:	IFMT(encoding) = MMAL_ENCODING_RGB16; break;
-			case V4L2_PIX_FMT_RGB24:	IFMT(encoding) = MMAL_ENCODING_RGB24; break;
-			default: assert(0 && "Unsupported pixelformat");
-		}
-		IFMT(es->video.width) = align_size(frame->width, 32);
-		IFMT(es->video.height) = align_size(frame->height, 16);
-		IFMT(es->video.crop.x) = 0;
-		IFMT(es->video.crop.y) = 0;
-		IFMT(es->video.crop.width) = frame->width;
-		IFMT(es->video.crop.height) = frame->height;
-		IFMT(flags) = MMAL_ES_FORMAT_FLAG_FRAMED;
-		enc->input_port->buffer_size = 1000 * 1000;
-		enc->input_port->buffer_num = enc->input_port->buffer_num_recommended * 4;
-#		undef IFMT
-
-		COMMIT_PORT(input);
-		SET_PORT_PARAM(input, boolean, ZERO_COPY, zero_copy);
-	}
-
-	{
-		PREPARE_PORT(output);
-
-#		define OFMT(_next) enc->output_port->format->_next
-		OFMT(type) = MMAL_ES_TYPE_VIDEO;
-		OFMT(encoding) = MMAL_ENCODING_H264;
-		OFMT(encoding_variant) = MMAL_ENCODING_VARIANT_H264_DEFAULT;
-		OFMT(bitrate) = enc->bitrate * 1000;
-		OFMT(es->video.frame_rate.num) = enc->fps;
-		OFMT(es->video.frame_rate.den) = 1;
-		enc->output_port->buffer_size = enc->output_port->buffer_size_recommended * 4;
-		enc->output_port->buffer_num = enc->output_port->buffer_num_recommended;
-#		undef OFMT
-
-		COMMIT_PORT(output);
-		{
-			MMAL_PARAMETER_VIDEO_PROFILE_T profile;
-			MEMSET_ZERO(profile);
-			profile.hdr.id = MMAL_PARAMETER_PROFILE;
-			profile.hdr.size = sizeof(profile);
-			// http://blog.mediacoderhq.com/h264-profiles-and-levels
-			profile.profile[0].profile = MMAL_VIDEO_PROFILE_H264_CONSTRAINED_BASELINE;
-			profile.profile[0].level = MMAL_VIDEO_LEVEL_H264_4; // Supports 1080p
-			if ((error = mmal_port_parameter_set(enc->output_port, &profile.hdr)) != MMAL_SUCCESS) {
-				LOG_ERROR_MMAL(error, "H264: Can't set MMAL_PARAMETER_PROFILE for the output port");
-				goto error;
-			}
-		}
-
-		SET_PORT_PARAM(output, boolean,	ZERO_COPY,					MMAL_TRUE);
-		SET_PORT_PARAM(output, uint32,	INTRAPERIOD,				enc->gop);
-		SET_PORT_PARAM(output, uint32,	NALUNITFORMAT,				MMAL_VIDEO_NALUNITFORMAT_STARTCODES);
-		SET_PORT_PARAM(output, boolean,	MINIMISE_FRAGMENTATION,		MMAL_TRUE);
-		SET_PORT_PARAM(output, uint32,	MB_ROWS_PER_SLICE,			0);
-		SET_PORT_PARAM(output, boolean,	VIDEO_IMMUTABLE_INPUT,		MMAL_TRUE);
-		SET_PORT_PARAM(output, boolean,	VIDEO_DROPPABLE_PFRAMES,	MMAL_FALSE);
-		SET_PORT_PARAM(output, boolean,	VIDEO_ENCODE_INLINE_HEADER,	MMAL_TRUE); // SPS/PPS: https://github.com/raspberrypi/userland/issues/443
-		SET_PORT_PARAM(output, uint32,	VIDEO_BIT_RATE,				enc->bitrate * 1000);
-		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_PEAK_RATE,		enc->bitrate * 1000);
-		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_MIN_QUANT,				16);
-		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_MAX_QUANT,				34);
-		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_FRAME_LIMIT_BITS,		1000000);
-		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_H264_AU_DELIMITERS,	MMAL_FALSE);
-	}
-
-	ENABLE_PORT(input);
-	ENABLE_PORT(output);
-
-	enc->ready = true;
-	return 0;
-
-	error:
-		_h264_encoder_cleanup(enc);
-		LOG_ERROR("H264: Encoder disabled due error (prepare)");
-		return -1;
-
-#	undef ENABLE_PORT
-#	undef SET_PORT_PARAM
-#	undef COMMIT_PORT
-#	undef PREPARE_PORT
-}
-
-static void _h264_encoder_cleanup(h264_encoder_s *enc) {
-	MMAL_STATUS_T error;
-
-#	define DISABLE_PORT(_id) { \
-			if (enc->_id##_port) { \
-				if ((error = mmal_wrapper_port_disable(enc->_id##_port)) != MMAL_SUCCESS) { \
-					LOG_ERROR_MMAL(error, "H264: Can't disable MMAL %s port", #_id); \
-				} \
-				enc->_id##_port = NULL; \
-			} \
-		}
-
-	DISABLE_PORT(input);
-	DISABLE_PORT(output);
-
-#	undef DISABLE_PORT
-
-	if (enc->wrapper) {
-		enc->wrapper->status = MMAL_SUCCESS; // Это реально надо?
-	}
-
-	enc->last_online = -1;
-	enc->ready = false;
-}
-
-int h264_encoder_compress(h264_encoder_s *enc, const frame_s *src, int src_vcsm_handle, frame_s *dest, bool force_key) {
-	assert(enc->ready);
-	assert(src->used > 0);
-	assert(enc->width == src->width);
-	assert(enc->height == src->height);
-	assert(enc->format == src->format);
-	assert(enc->stride == src->stride);
-
-	frame_copy_meta(src, dest);
-	dest->encode_begin_ts = get_now_monotonic();
-	dest->format = V4L2_PIX_FMT_H264;
-	dest->stride = 0;
-
-	force_key = (force_key || enc->last_online != src->online);
-
-	if (_h264_encoder_compress_raw(enc, src, src_vcsm_handle, dest, force_key) < 0) {
-		_h264_encoder_cleanup(enc);
-		LOG_ERROR("H264: Encoder disabled due error (compress)");
-		return -1;
-	}
-
-	dest->encode_end_ts = get_now_monotonic();
-	LOG_VERBOSE("H264: Compressed new frame: size=%zu, time=%0.3Lf, force_key=%d",
-		dest->used, dest->encode_end_ts - dest->encode_begin_ts, force_key);
-
-	enc->last_online = src->online;
-	return 0;
-}
-
-static int _h264_encoder_compress_raw(h264_encoder_s *enc, const frame_s *src, int src_vcsm_handle, frame_s *dest, bool force_key) {
-	LOG_DEBUG("H264: Compressing new frame; force_key=%d ...", force_key);
-
-	MMAL_STATUS_T error;
-
-	if (force_key) {
-		if ((error = mmal_port_parameter_set_boolean(
-			enc->output_port,
-			MMAL_PARAMETER_VIDEO_REQUEST_I_FRAME,
-			MMAL_TRUE
-		)) != MMAL_SUCCESS) {
-			LOG_ERROR_MMAL(error, "H264: Can't request keyframe");
-			return -1;
-		}
-	}
-
-	MMAL_BUFFER_HEADER_T *out = NULL;
-	MMAL_BUFFER_HEADER_T *in = NULL;
-	bool eos = false;
-	bool sent = false;
-
-	dest->used = 0;
-
-	while (!eos) {
-		out = NULL;
-		while (mmal_wrapper_buffer_get_empty(enc->output_port, &out, 0) == MMAL_SUCCESS) {
-			if ((error = mmal_port_send_buffer(enc->output_port, out)) != MMAL_SUCCESS) {
-				LOG_ERROR_MMAL(error, "H264: Can't send MMAL output buffer");
-				return -1;
-			}
-		}
-
-		in = NULL;
-		if (!sent && mmal_wrapper_buffer_get_empty(enc->input_port, &in, 0) == MMAL_SUCCESS) {
-			if (enc->zero_copy && src_vcsm_handle > 0) {
-				in->data = (uint8_t *)vcsm_vc_hdl_from_hdl(src_vcsm_handle);
-			} else {
-				in->data = src->data;
-			}
-			in->alloc_size = src->used;
-			in->length = src->used;
-			in->offset = 0;
-			in->flags = MMAL_BUFFER_HEADER_FLAG_EOS;
-			if ((error = mmal_port_send_buffer(enc->input_port, in)) != MMAL_SUCCESS) {
-				LOG_ERROR_MMAL(error, "H264: Can't send MMAL input buffer");
-				return -1;
-			}
-			sent = true;
-		}
-
-		error = mmal_wrapper_buffer_get_full(enc->output_port, &out, 0);
-		if (error == MMAL_EAGAIN) {
-			vcos_semaphore_wait(&enc->handler_sem);
-			continue;
-		} else if (error != MMAL_SUCCESS) {
-			LOG_ERROR_MMAL(error, "H264: Can't get MMAL output buffer");
-			return -1;
-		}
-
-		frame_append_data(dest, out->data, out->length);
-
-		eos = out->flags & MMAL_BUFFER_HEADER_FLAG_EOS;
-		mmal_buffer_header_release(out);
-	}
-
-	if ((error = mmal_port_flush(enc->output_port)) != MMAL_SUCCESS) {
-		LOG_ERROR_MMAL(error, "H264: Can't flush MMAL output buffer; ignored");
-	}
-	return 0;
-}
-
-static void _mmal_callback(MMAL_WRAPPER_T *wrapper) {
-	vcos_semaphore_post(&((h264_encoder_s *)(wrapper->user_data))->handler_sem);
-}
-
-static const char *_mmal_error_to_string(MMAL_STATUS_T error) {
-	// http://www.jvcref.com/files/PI/documentation/html/group___mmal_types.html
-#	define CASE_ERROR(_name, _msg) case MMAL_##_name: return "MMAL_" #_name " [" _msg "]"
-	switch (error) {
-		case MMAL_SUCCESS: return "MMAL_SUCCESS";
-		CASE_ERROR(ENOMEM,		"Out of memory");
-		CASE_ERROR(ENOSPC,		"Out of resources");
-		CASE_ERROR(EINVAL,		"Invalid argument");
-		CASE_ERROR(ENOSYS,		"Function not implemented");
-		CASE_ERROR(ENOENT,		"No such file or directory");
-		CASE_ERROR(ENXIO,		"No such device or address");
-		CASE_ERROR(EIO,			"IO error");
-		CASE_ERROR(ESPIPE,		"Illegal seek");
-		CASE_ERROR(ECORRUPT,	"Data is corrupt");
-		CASE_ERROR(ENOTREADY,	"Component is not ready");
-		CASE_ERROR(ECONFIG,		"Component is not configured");
-		CASE_ERROR(EISCONN,		"Port is already connected");
-		CASE_ERROR(ENOTCONN,	"Port is disconnected");
-		CASE_ERROR(EAGAIN,		"Resource temporarily unavailable");
-		CASE_ERROR(EFAULT,		"Bad address");
-		case MMAL_STATUS_MAX: break; // Makes cpplint happy
-	}
-	return "Unknown error";
-#	undef CASE_ERROR
-}
-
-#undef LOG_ERROR_MMAL

src/ustreamer/h264/stream.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -23,68 +23,42 @@
 #include "stream.h"
 
 
-h264_stream_s *h264_stream_init(memsink_s *sink, unsigned bitrate, unsigned gop) {
+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_tmp_src");
-	h264->dest = frame_init("h264_dest");
+	h264->tmp_src = frame_init();
+	h264->dest = frame_init();
 	atomic_init(&h264->online, false);
-
-	// FIXME: 30 or 0? https://github.com/6by9/yavta/blob/master/yavta.c#L210
-	if ((h264->enc = h264_encoder_init(bitrate, gop, 0)) == NULL) {
-		goto error;
-	}
-
+	h264->enc = m2m_h264_encoder_init("H264", path, bitrate, gop);
 	return h264;
-
-	error:
-		h264_stream_destroy(h264);
-		return NULL;
 }
 
 void h264_stream_destroy(h264_stream_s *h264) {
-	if (h264->enc) {
-		h264_encoder_destroy(h264->enc);
-	}
+	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, int vcsm_handle, bool force_key) {
-	long double now = get_now_monotonic();
-	bool zero_copy = false;
+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)) {
-		assert(vcsm_handle <= 0);
+		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);
-	} else if (vcsm_handle > 0) {
-		LOG_DEBUG("H264: Zero-copy available for the input");
-		zero_copy = true;
-	} else {
-		LOG_DEBUG("H264: Copying source to tmp buffer ...");
-		frame_copy(frame, h264->tmp_src);
-		frame = h264->tmp_src;
-		LOG_VERBOSE("H264: Source copied; time=%.3Lf", get_now_monotonic() - now);
 	}
 
 	bool online = false;
-
-	if (!h264_encoder_is_prepared_for(h264->enc, frame, zero_copy)) {
-		h264_encoder_prepare(h264->enc, frame, zero_copy);
+	if (!m2m_encoder_compress(h264->enc, frame, h264->dest, force_key)) {
+		online = !memsink_server_put(h264->sink, h264->dest);
 	}
-
-	if (h264->enc->ready) {
-		if (h264_encoder_compress(h264->enc, frame, vcsm_handle, h264->dest, force_key) == 0) {
-			online = !memsink_server_put(h264->sink, h264->dest);
-		}
-	}
-
 	atomic_store(&h264->online, online);
 }

src/ustreamer/h264/stream.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -31,19 +31,18 @@
 #include "../../libs/frame.h"
 #include "../../libs/memsink.h"
 #include "../../libs/unjpeg.h"
-
-#include "encoder.h"
+#include "../m2m.h"
 
 
 typedef struct {
 	memsink_s		*sink;
 	frame_s			*tmp_src;
 	frame_s			*dest;
-	h264_encoder_s	*enc;
+	m2m_encoder_s	*enc;
 	atomic_bool		online;
 } h264_stream_s;
 
 
-h264_stream_s *h264_stream_init(memsink_s *sink, unsigned bitrate, unsigned gop);
+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, int vcsm_handle, bool force_key);
+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) 2018-2021  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/ustreamer/http/bev.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/http/mime.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/http/mime.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/http/path.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/http/path.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/http/server.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -25,6 +25,8 @@
 
 static int _http_preprocess_request(struct evhttp_request *request, server_s *server);
 
+static int _http_check_run_compat_action(struct evhttp_request *request, void *v_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);
@@ -34,11 +36,14 @@ 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_request_watcher(int fd, short event, void *v_server);
+static void _http_refresher(int fd, short event, void *v_server);
 static void _http_queue_send_stream(server_s *server, bool stream_updated, bool frame_updated);
 
 static bool _expose_new_frame(server_s *server);
 
+static char *_http_get_client_hostport(struct evhttp_request *request);
+
 
 #define RUN(_next)		server->run->_next
 #define STREAM(_next)	RUN(stream->_next)
@@ -49,7 +54,7 @@ static bool _expose_new_frame(server_s *server);
 server_s *server_init(stream_s *stream) {
 	exposed_s *exposed;
 	A_CALLOC(exposed, 1);
-	exposed->frame = frame_init("http_exposed");
+	exposed->frame = frame_init();
 
 	server_runtime_s *run;
 	A_CALLOC(run, 1);
@@ -76,14 +81,19 @@ server_s *server_init(stream_s *stream) {
 }
 
 void server_destroy(server_s *server) {
-	if (RUN(refresh)) {
-		event_del(RUN(refresh));
-		event_free(RUN(refresh));
+	if (RUN(refresher)) {
+		event_del(RUN(refresher));
+		event_free(RUN(refresher));
+	}
+
+	if (RUN(request_watcher)) {
+		event_del(RUN(request_watcher));
+		event_free(RUN(request_watcher));
 	}
 
 	evhttp_free(RUN(http));
-	if (RUN(unix_fd)) {
-		close(RUN(unix_fd));
+	if (RUN(ext_fd)) {
+		close(RUN(ext_fd));
 	}
 	event_base_free(RUN(base));
 
@@ -91,12 +101,11 @@ void server_destroy(server_s *server) {
 	libevent_global_shutdown();
 #	endif
 
-	for (stream_client_s *client = RUN(stream_clients); client != NULL;) {
-		stream_client_s *next = client->next;
+	LIST_ITERATE(RUN(stream_clients), client, {
 		free(client->key);
+		free(client->hostport);
 		free(client);
-		client = next;
-	}
+	});
 
 	if (RUN(auth_token)) {
 		free(RUN(auth_token));
@@ -125,33 +134,36 @@ int server_listen(server_s *server) {
 	EX(notify_last_width) = EX(frame->width);
 	EX(notify_last_height) = EX(frame->height);
 
+	if (server->exit_on_no_clients > 0) {
+		RUN(last_request_ts) = get_now_monotonic();
+		struct timeval interval = {0};
+		interval.tv_usec = 100000;
+		assert((RUN(request_watcher) = event_new(RUN(base), -1, EV_PERSIST, _http_request_watcher, server)));
+		assert(!event_add(RUN(request_watcher), &interval));
+	}
+
 	{
-		struct timeval refresh_interval;
-
-		refresh_interval.tv_sec = 0;
+		struct timeval interval = {0};
 		if (STREAM(dev->desired_fps) > 0) {
-			refresh_interval.tv_usec = 1000000 / (STREAM(dev->desired_fps) * 2);
+			interval.tv_usec = 1000000 / (STREAM(dev->desired_fps) * 2);
 		} else {
-			refresh_interval.tv_usec = 16000; // ~60fps
+			interval.tv_usec = 16000; // ~60fps
 		}
-
-		assert((RUN(refresh) = event_new(RUN(base), -1, EV_PERSIST, _http_exposed_refresh, server)));
-		assert(!event_add(RUN(refresh), &refresh_interval));
+		assert((RUN(refresher) = event_new(RUN(base), -1, EV_PERSIST, _http_refresher, server)));
+		assert(!event_add(RUN(refresher), &interval));
 	}
 
 	evhttp_set_timeout(RUN(http), server->timeout);
 
 	if (server->user[0] != '\0') {
-		char *raw_token;
 		char *encoded_token = NULL;
 
-		A_CALLOC(raw_token, strlen(server->user) + strlen(server->passwd) + 16);
-		sprintf(raw_token, "%s:%s", server->user, server->passwd);
+		char *raw_token;
+		A_ASPRINTF(raw_token, "%s:%s", server->user, server->passwd);
 		base64_encode((uint8_t *)raw_token, strlen(raw_token), &encoded_token, NULL);
 		free(raw_token);
 
-		A_CALLOC(RUN(auth_token), strlen(encoded_token) + 16);
-		sprintf(RUN(auth_token), "Basic %s", encoded_token);
+		A_ASPRINTF(RUN(auth_token), "Basic %s", encoded_token);
 		free(encoded_token);
 
 		LOG_INFO("Using HTTP basic auth");
@@ -159,7 +171,7 @@ int server_listen(server_s *server) {
 
 	if (server->unix_path[0] != '\0') {
 		LOG_DEBUG("Binding HTTP to UNIX socket '%s' ...", server->unix_path);
-		if ((RUN(unix_fd) = evhttp_my_bind_unix(
+		if ((RUN(ext_fd) = evhttp_my_bind_unix(
 			RUN(http),
 			server->unix_path,
 			server->unix_rm,
@@ -168,9 +180,16 @@ int server_listen(server_s *server) {
 			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");
+
+#	ifdef WITH_SYSTEMD
+	} else if (server->systemd) {
+		LOG_DEBUG("Binding HTTP to systemd socket ...");
+		if ((RUN(ext_fd) = evhttp_my_bind_systemd(RUN(http))) < 0) {
+			return -1;
 		}
+		LOG_INFO("Listening systemd socket ...");
+#	endif
+
 	} else {
 		LOG_DEBUG("Binding HTTP to [%s]:%u ...", server->host, server->port);
 		if (evhttp_bind_socket(RUN(http), server->host, server->port) < 0) {
@@ -197,6 +216,8 @@ void server_loop_break(server_s *server) {
 	assert(!evhttp_add_header(evhttp_request_get_output_headers(request), _key, _value))
 
 static int _http_preprocess_request(struct evhttp_request *request, server_s *server) {
+	RUN(last_request_ts) = get_now_monotonic();
+
 	if (RUN(auth_token)) {
 		const char *token = evhttp_find_header(evhttp_request_get_input_headers(request), "Authorization");
 
@@ -221,41 +242,63 @@ static int _http_preprocess_request(struct evhttp_request *request, server_s *se
 		} \
 	}
 
-static void _http_callback_root(struct evhttp_request *request, void *v_server) {
-	server_s *server = (server_s *)v_server;
+static int _http_check_run_compat_action(struct evhttp_request *request, void *v_server) {
+	// MJPG-Streamer compatibility layer
 
-	PREPROCESS_REQUEST;
+	struct evkeyvalq params;
+	int error = 0;
 
-	struct evkeyvalq params; // For mjpg-streamer compatibility
 	evhttp_parse_query(evhttp_request_get_uri(request), &params);
 	const char *action = evhttp_find_header(&params, "action");
 
 	if (action && !strcmp(action, "snapshot")) {
 		_http_callback_snapshot(request, v_server);
+		goto ok;
 	} else if (action && !strcmp(action, "stream")) {
 		_http_callback_stream(request, v_server);
-	} else {
-		struct evbuffer *buf;
-		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);
+		goto ok;
 	}
 
-	evhttp_clear_headers(&params);
+	error = -1;
+	ok:
+		evhttp_clear_headers(&params);
+		return error;
+}
+
+#define COMPAT_REQUEST { \
+		if (_http_check_run_compat_action(request, v_server) == 0) { \
+			return; \
+		} \
+	}
+
+static void _http_callback_root(struct evhttp_request *request, void *v_server) {
+	server_s *server = (server_s *)v_server;
+
+	PREPROCESS_REQUEST;
+	COMPAT_REQUEST;
+
+	struct evbuffer *buf;
+
+	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);
 }
 
 static void _http_callback_static(struct evhttp_request *request, void *v_server) {
 	server_s *server = (server_s *)v_server;
+
+	PREPROCESS_REQUEST;
+	COMPAT_REQUEST;
+
 	struct evbuffer *buf = NULL;
 	struct evhttp_uri *uri = NULL;
 	char *decoded_path = NULL;
 	char *static_path = NULL;
 	int fd = -1;
 
-	PREPROCESS_REQUEST;
-
 	{
 		char *uri_path;
 
@@ -294,6 +337,10 @@ static void _http_callback_static(struct evhttp_request *request, void *v_server
 			goto not_found;
 		}
 
+		// evbuffer_add_file() owns the resulting file descriptor
+		// and will close it when finished transferring data
+		fd = -1;
+
 		ADD_HEADER("Content-Type", guess_mime_type(static_path));
 		evhttp_send_reply(request, HTTP_OK, "OK", buf);
 		goto cleanup;
@@ -325,6 +372,8 @@ static void _http_callback_static(struct evhttp_request *request, void *v_server
 		}
 }
 
+#undef COMPAT_REQUEST
+
 static void _http_callback_state(struct evhttp_request *request, void *v_server) {
 	server_s *server = (server_s *)v_server;
 
@@ -343,7 +392,7 @@ static void _http_callback_state(struct evhttp_request *request, void *v_server)
 		encoder_type_to_string(enc_type),
 		enc_quality
 	));
-#	ifdef WITH_OMX
+
 	if (STREAM(run->h264)) {
 		assert(evbuffer_add_printf(buf,
 			" \"h264\": {\"bitrate\": %u, \"gop\": %u, \"online\": %s},",
@@ -352,7 +401,25 @@ static void _http_callback_state(struct evhttp_request *request, void *v_server)
 			bool_to_string(atomic_load(&STREAM(run->h264->online)))
 		));
 	}
-#	endif
+
+	if (STREAM(sink) || STREAM(h264_sink)) {
+		assert(evbuffer_add_printf(buf, " \"sinks\": {"));
+		if (STREAM(sink)) {
+			assert(evbuffer_add_printf(buf,
+				"\"jpeg\": {\"has_clients\": %s}",
+				bool_to_string(atomic_load(&STREAM(sink->has_clients)))
+			));
+		}
+		if (STREAM(h264_sink)) {
+			assert(evbuffer_add_printf(buf,
+				"%s\"h264\": {\"has_clients\": %s}",
+				(STREAM(sink) ? ", " : ""),
+				bool_to_string(atomic_load(&STREAM(h264_sink->has_clients)))
+			));
+		}
+		assert(evbuffer_add_printf(buf, "},"));
+	}
+
 	assert(evbuffer_add_printf(buf,
 		" \"source\": {\"resolution\": {\"width\": %u, \"height\": %u},"
 		" \"online\": %s, \"desired_fps\": %u, \"captured_fps\": %u},"
@@ -366,19 +433,20 @@ static void _http_callback_state(struct evhttp_request *request, void *v_server)
 		RUN(stream_clients_count)
 	));
 
-	for (stream_client_s * client = RUN(stream_clients); client != NULL; client = client->next) {
+	LIST_ITERATE(RUN(stream_clients), client, {
 		assert(evbuffer_add_printf(buf,
-			"\"%s\": {\"fps\": %u, \"extra_headers\": %s, \"advance_headers\": %s,"
-			" \"dual_final_frames\": %s, \"zero_data\": %s}%s",
+			"\"%" PRIx64 "\": {\"fps\": %u, \"extra_headers\": %s, \"advance_headers\": %s,"
+			" \"dual_final_frames\": %s, \"zero_data\": %s, \"key\": \"%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),
 			bool_to_string(client->zero_data),
+			(client->key != NULL ? client->key : "0"),
 			(client->next ? ", " : "")
 		));
-	}
+	});
 
 	assert(evbuffer_add_printf(buf, "}}}}"));
 
@@ -473,20 +541,10 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 #		undef PARSE_PARAM
 		evhttp_clear_headers(&params);
 
-		uuid_t uuid;
-		uuid_generate(uuid);
-		uuid_unparse_lower(uuid, client->id);
+		client->hostport = _http_get_client_hostport(request);
+		client->id = get_now_id();
 
-		if (RUN(stream_clients) == NULL) {
-			RUN(stream_clients) = client;
-		} else {
-			stream_client_s *last = RUN(stream_clients);
-
-			for (; last->next != NULL; last = last->next);
-			client->prev = last;
-			last->next = client;
-		}
-		RUN(stream_clients_count) += 1;
+		LIST_APPEND_C(RUN(stream_clients), client, RUN(stream_clients_count));
 
 		if (RUN(stream_clients_count) == 1) {
 			atomic_store(&VID(has_clients), true);
@@ -495,23 +553,18 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 #			endif
 		}
 
-		char *client_addr;
-		unsigned short client_port;
-		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, RUN(stream_clients_count));
-
+		LOG_INFO("HTTP: Registered client: %s, id=%" PRIx64 "; clients now: %u",
+			client->hostport, client->id, RUN(stream_clients_count));
 
 		struct bufferevent *buf_event = evhttp_connection_get_bufferevent(conn);
-		if (server->tcp_nodelay && !RUN(unix_fd)) {
+		if (server->tcp_nodelay && !RUN(ext_fd)) {
 			evutil_socket_t fd;
 			int on = 1;
 
-			LOG_DEBUG("HTTP: Setting up TCP_NODELAY to the client [%s]:%u ...", client_addr, client_port);
+			LOG_DEBUG("HTTP: Setting up TCP_NODELAY to the client %s ...", client->hostport);
 			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);
+				LOG_PERROR("HTTP: Can't set TCP_NODELAY to the client %s", client->hostport);
 			}
 		}
 		bufferevent_setcb(buf_event, NULL, NULL, _http_callback_stream_error, (void *)client);
@@ -525,7 +578,6 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 
 static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_client) {
 #	define BOUNDARY "boundarydonotcross"
-#	define RN "\r\n"
 
 	stream_client_s *client = (stream_client_s *)v_client;
 	server_s *server = client->server;
@@ -555,7 +607,7 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 	// 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
+	// Его наличие не требуется RFC, однако никаких стандартов на MJPEG over HTTP
 	// в природе не существует, и никто не может гарантировать, что отсутствие
 	// Content-Length не сломает вещание для каких-нибудь маргинальных браузеров.
 	//
@@ -575,7 +627,7 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 			"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
+			"Set-Cookie: stream_client=%s/%" PRIx64 "; path=/; max-age=30" RN
 			"Content-Type: multipart/x-mixed-replace;boundary=" BOUNDARY RN
 			RN
 			"--" BOUNDARY RN,
@@ -650,7 +702,6 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 	bufferevent_enable(buf_event, EV_READ);
 
 #	undef ADD_ADVANCE_HEADERS
-#	undef RN
 #	undef BOUNDARY
 }
 
@@ -658,10 +709,7 @@ static void _http_callback_stream_error(UNUSED struct bufferevent *buf_event, UN
 	stream_client_s *client = (stream_client_s *)v_client;
 	server_s *server = client->server;
 
-	char *reason = bufferevent_my_format_reason(what);
-
-	assert(RUN(stream_clients_count) > 0);
-	RUN(stream_clients_count) -= 1;
+	LIST_REMOVE_C(RUN(stream_clients), client, RUN(stream_clients_count));
 
 	if (RUN(stream_clients_count) == 0) {
 		atomic_store(&VID(has_clients), false);
@@ -670,40 +718,26 @@ static void _http_callback_stream_error(UNUSED struct bufferevent *buf_event, UN
 #		endif
 	}
 
-	char *client_addr = "???";
-	unsigned short client_port = 0;
+	char *reason = bufferevent_my_format_reason(what);
+	LOG_INFO("HTTP: Disconnected client: %s, id=%" PRIx64 ", %s; clients now: %u",
+		client->hostport, client->id, reason, RUN(stream_clients_count));
+	free(reason);
 
 	struct evhttp_connection *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->hostport);
 	free(client);
-
-	free(reason);
 }
 
 static void _http_queue_send_stream(server_s *server, bool stream_updated, bool frame_updated) {
 	bool has_clients = false;
 	bool queued = false;
 
-	for (stream_client_s *client = RUN(stream_clients); client != NULL; client = client->next) {
+	LIST_ITERATE(RUN(stream_clients), client, {
 		struct evhttp_connection *conn = evhttp_request_get_connection(client->request);
 		if (conn) {
 			// Фикс для бага WebKit. При включенной опции дропа одинаковых фреймов,
@@ -734,7 +768,7 @@ static void _http_queue_send_stream(server_s *server, bool stream_updated, bool
 
 			has_clients = true;
 		}
-	}
+	});
 
 	if (queued) {
 		static unsigned queued_fps_accum = 0;
@@ -751,7 +785,21 @@ static void _http_queue_send_stream(server_s *server, bool stream_updated, bool
 	}
 }
 
-static void _http_exposed_refresh(UNUSED int fd, UNUSED short what, void *v_server) {
+static void _http_request_watcher(UNUSED int fd, UNUSED short what, void *v_server) {
+	server_s *server = (server_s *)v_server;
+	const long double now = get_now_monotonic();
+
+	if (stream_has_clients(RUN(stream))) {
+		RUN(last_request_ts) = now;
+	} else if (RUN(last_request_ts) + server->exit_on_no_clients < now) {
+		LOG_INFO("HTTP: No requests or HTTP/sink clients found in last %u seconds, exiting ...",
+			server->exit_on_no_clients);
+		process_suicide();
+		RUN(last_request_ts) = now;
+	}
+}
+
+static void _http_refresher(UNUSED int fd, UNUSED short what, void *v_server) {
 	server_s *server = (server_s *)v_server;
 	bool stream_updated = false;
 	bool frame_updated = false;
@@ -836,3 +884,37 @@ static bool _expose_new_frame(server_s *server) {
 #undef VID
 #undef STREAM
 #undef RUN
+
+static char *_http_get_client_hostport(struct evhttp_request *request) {
+	char *addr = NULL;
+	unsigned short port = 0;
+	struct evhttp_connection *conn = evhttp_request_get_connection(request);
+	if (conn) {
+		char *peer;
+		evhttp_connection_get_peer(conn, &peer, &port);
+		assert(addr = strdup(peer));
+	}
+
+	const char *xff = evhttp_find_header(evhttp_request_get_input_headers(request), "X-Forwarded-For");
+	if (xff) {
+		if (addr) {
+			free(addr);
+		}
+		assert(addr = strndup(xff, 1024));
+		for (unsigned index = 0; addr[index]; ++index) {
+			if (addr[index] == ',') {
+				addr[index] = '\0';
+				break;
+			}
+		}
+	}
+
+	if (addr == NULL) {
+		assert(addr = strdup("???"));
+	}
+
+	char *hostport;
+	A_ASPRINTF(hostport, "[%s]:%u", addr, port);
+	free(addr);
+	return hostport;
+}

src/ustreamer/http/server.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -28,6 +28,7 @@
 #include <stdbool.h>
 #include <stdatomic.h>
 #include <string.h>
+#include <inttypes.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <assert.h>
@@ -47,8 +48,6 @@
 #include <event2/bufferevent.h>
 #include <event2/keyvalq_struct.h>
 
-#include <uuid/uuid.h>
-
 #ifndef EVTHREAD_USE_PTHREADS_IMPLEMENTED
 #	error Required libevent-pthreads support
 #endif
@@ -59,6 +58,7 @@
 #include "../../libs/process.h"
 #include "../../libs/frame.h"
 #include "../../libs/base64.h"
+#include "../../libs/list.h"
 #include "../data/index_html.h"
 #include "../encoder.h"
 #include "../stream.h"
@@ -71,6 +71,9 @@
 #include "uri.h"
 #include "mime.h"
 #include "static.h"
+#ifdef WITH_SYSTEMD
+#	include "systemd/systemd.h"
+#endif
 
 
 typedef struct stream_client_sx {
@@ -83,7 +86,8 @@ typedef struct stream_client_sx {
 	bool			dual_final_frames;
 	bool			zero_data;
 
-	char			id[37]; // ex. "1b4e28ba-2fa1-11d2-883f-0016d3cca427" + "\0"
+	char			*hostport;
+	uint64_t		id;
 	bool			need_initial;
 	bool			need_first_frame;
 	bool			updated_prev;
@@ -91,8 +95,7 @@ typedef struct stream_client_sx {
 	unsigned		fps_accum;
 	long long		fps_accum_second;
 
-	struct stream_client_sx *prev;
-	struct stream_client_sx *next;
+	LIST_STRUCT(struct stream_client_sx);
 } stream_client_s;
 
 typedef struct {
@@ -112,11 +115,17 @@ typedef struct {
 typedef struct {
 	struct event_base	*base;
 	struct evhttp		*http;
-	evutil_socket_t		unix_fd;
+	evutil_socket_t		ext_fd; // Unix or socket activation
+
 	char				*auth_token;
-	struct event		*refresh;
+
+	struct event		*request_watcher;
+	long double			last_request_ts;
+
+	struct event		*refresher;
 	stream_s			*stream;
 	exposed_s			*exposed;
+
 	stream_client_s		*stream_clients;
 	unsigned			stream_clients_count;
 } server_runtime_s;
@@ -124,9 +133,15 @@ typedef struct {
 typedef struct server_sx {
 	char		*host;
 	unsigned	port;
+
 	char		*unix_path;
 	bool		unix_rm;
 	mode_t		unix_mode;
+
+#	ifdef WITH_SYSTEMD
+	bool		systemd;
+#	endif
+
 	bool		tcp_nodelay;
 	unsigned	timeout;
 
@@ -140,6 +155,7 @@ typedef struct server_sx {
 	unsigned	fake_height;
 
 	bool		notify_parent;
+	unsigned	exit_on_no_clients;
 
 	server_runtime_s *run;
 } server_s;

src/ustreamer/http/static.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -32,7 +32,7 @@ char *find_static_file_path(const char *root_path, const char *request_path) {
 		goto error;
 	}
 
-	A_CALLOC(path, strlen(root_path) + strlen(simplified_path) + 16);
+	A_CALLOC(path, strlen(root_path) + strlen(simplified_path) + 16); // + reserved for /index.html
 	sprintf(path, "%s/%s", root_path, simplified_path);
 
 	struct stat st;

src/ustreamer/http/static.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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/ustreamer/http/systemd/systemd.c

@@ -0,0 +1,46 @@
+/*****************************************************************************
+#                                                                            #
+#    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 "systemd.h"
+
+
+evutil_socket_t evhttp_my_bind_systemd(struct evhttp *http) {
+	int fds = sd_listen_fds(1);
+	if (fds < 1) {
+		LOG_ERROR("No available systemd sockets");
+		return -1;
+	}
+
+	int fd;
+	for (fd = 1; fd < fds; ++fd) {
+		close(SD_LISTEN_FDS_START + fd);
+	}
+	fd = SD_LISTEN_FDS_START;
+
+	assert(!evutil_make_socket_nonblocking(fd));
+
+	if (evhttp_accept_socket(http, fd) < 0) {
+		LOG_PERROR("Can't evhttp_accept_socket() systemd socket");
+		return -1;
+	}
+	return fd;
+}

src/ustreamer/http/systemd/systemd.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -22,21 +22,16 @@
 
 #pragma once
 
-#include <stdio.h>
+#include <unistd.h>
 #include <assert.h>
 
-#include <IL/OMX_IVCommon.h>
-#include <IL/OMX_Core.h>
-#include <IL/OMX_Image.h>
+#include <event2/http.h>
+#include <event2/util.h>
+
+#include <systemd/sd-daemon.h>
 
 #include "../../../libs/tools.h"
 #include "../../../libs/logging.h"
 
 
-#define LOG_ERROR_OMX(_error, _msg, ...) { \
-		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, omx_error_to_string(_error)); \
-	}
-
-
-const char *omx_error_to_string(OMX_ERRORTYPE error);
-const char *omx_state_to_string(OMX_STATETYPE state);
+evutil_socket_t evhttp_my_bind_systemd(struct evhttp *http);

src/ustreamer/http/unix.c

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #
@@ -24,7 +24,7 @@
 
 
 evutil_socket_t evhttp_my_bind_unix(struct evhttp *http, const char *path, bool rm, mode_t mode) {
-	struct sockaddr_un addr;
+	struct sockaddr_un addr = {0};
 
 #	define MAX_SUN_PATH (sizeof(addr.sun_path) - 1)
 
@@ -33,7 +33,6 @@ evutil_socket_t evhttp_my_bind_unix(struct evhttp *http, const char *path, bool
 		return -1;
 	}
 
-	MEMSET_ZERO(addr);
 	strncpy(addr.sun_path, path, MAX_SUN_PATH);
 	addr.sun_family = AF_UNIX;
 

src/ustreamer/http/unix.h

@@ -1,8 +1,8 @@
 /*****************************************************************************
 #                                                                            #
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2021  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    #