Bump version: 1.6 → 1.7

This reverts commit 291d7431b0.

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 0.44
+current_version = 1.7
 parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
 serialize = 
 	{major}.{minor}
@@ -10,7 +10,11 @@ serialize =
 search = VERSION "{current_version}"
 replace = VERSION "{new_version}"
 
-[bumpversion:file:PKGBUILD]
+[bumpversion:file:pkg/arch/PKGBUILD]
 search = pkgver={current_version}
 replace = pkgver={new_version}
 
+[bumpversion:file:pkg/openwrt/Makefile]
+search = PKG_VERSION:={current_version}
+replace = PKG_VERSION:={new_version}
+

.gitignore

@@ -1,9 +1,9 @@
-/pkg/
-/src/ustreamer-*/
-/src/v*.tar.gz
-/v*.tar.gz
-/ustreamer-*.pkg.tar.xz
+/pkg/arch/pkg/
+/pkg/arch/src/
+/pkg/arch/v*.tar.gz
+/pkg/arch/ustreamer-*.pkg.tar.xz
+/build/
+/config.mk
 /vgcore.*
 /ustreamer
 /*.sock
-*.o

Makefile

@@ -1,44 +1,93 @@
+-include config.mk
+
+PROG ?= ustreamer
 DESTDIR ?=
 PREFIX ?= /usr/local
+
+CC ?= gcc
 CFLAGS ?= -O3
 LDFLAGS ?=
 
+RPI_VC_HEADERS ?= /opt/vc/include
+RPI_VC_LIBS ?= /opt/vc/lib
+
+BUILD ?= build
+
 
 # =====
-CC = gcc
-LIBS = -lm -ljpeg -pthread -levent -levent_pthreads -luuid
-override CFLAGS += -c -std=c99 -Wall -Wextra -D_GNU_SOURCE
-SOURCES = $(shell ls src/*.c src/jpeg/*.c)
-OBJECTS = $(SOURCES:.c=.o)
-PROG = ustreamer
+_LIBS = -lm -ljpeg -pthread -levent -levent_pthreads -luuid
+override CFLAGS += -c -std=c11 -Wall -Wextra -D_GNU_SOURCE
+_SRCS = $(shell ls src/*.c src/http/*.c src/encoders/cpu/*.c src/encoders/hw/*.c)
 
 
-ifeq ($(shell ls -d /opt/vc/include 2>/dev/null), /opt/vc/include)
-SOURCES += $(shell ls src/omx/*.c)
-LIBS += -lbcm_host -lvcos -lopenmaxil -L/opt/vc/lib
-override CFLAGS += -DOMX_ENCODER -DOMX_SKIP64BIT -I/opt/vc/include
+define optbool
+$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
+endef
+
+
+ifneq ($(call optbool,$(WITH_OMX)),)
+_LIBS += -lbcm_host -lvcos -lopenmaxil -L$(RPI_VC_LIBS)
+override CFLAGS += -DWITH_OMX -DOMX_SKIP64BIT -I$(RPI_VC_HEADERS)
+_SRCS += $(shell ls src/encoders/omx/*.c)
+endif
+
+
+ifneq ($(call optbool,$(WITH_GPIO)),)
+_LIBS += -lwiringPi
+override CFLAGS += -DWITH_GPIO
+endif
+
+
+WITH_PTHREAD_NP ?= 1
+ifneq ($(call optbool,$(WITH_PTHREAD_NP)),)
+override CFLAGS += -DWITH_PTHREAD_NP
+endif
+
+
+WITH_SETPROCTITLE ?= 1
+ifneq ($(call optbool,$(WITH_SETPROCTITLE)),)
+ifeq ($(shell uname -s | tr A-Z a-z),linux)
+_LIBS += -lbsd
+endif
+override CFLAGS += -DWITH_SETPROCTITLE
 endif
 
 
 # =====
-all: $(SOURCES) $(PROG)
+all: $(PROG)
 
 
 install: $(PROG)
 	install -Dm755 $(PROG) $(DESTDIR)$(PREFIX)/bin/$(PROG)
 
 
+install-strip: install
+	strip $(DESTDIR)$(PREFIX)/bin/$(PROG)
+
+
+uninstall:
+	rm $(DESTDIR)$(PREFIX)/bin/$(PROG)
+
+
 regen:
-	tools/make-jpeg-h.py src/data/blank.jpeg src/data/blank_jpeg.h BLANK 640 480
-	tools/make-html-h.py src/data/index.html src/data/index_html.h HTML_INDEX_PAGE
+	tools/make-jpeg-h.py src/http/data/blank.jpeg src/http/data/blank_jpeg.h BLANK
+	tools/make-html-h.py src/http/data/index.html src/http/data/index_html.h INDEX
 
 
-$(PROG): $(OBJECTS)
-	$(CC) $(LIBS) $(LDFLAGS) $(OBJECTS) -o $@
+$(PROG): $(_SRCS:%.c=$(BUILD)/%.o)
+	$(info -- LD $@)
+	@ $(CC) $^ -o $@ $(LDFLAGS) $(_LIBS)
+	$(info ===== Build complete =====)
+	$(info == CC      = $(CC))
+	$(info == LIBS    = $(_LIBS))
+	$(info == CFLAGS  = $(CFLAGS))
+	$(info == LDFLAGS = $(LDFLAGS))
 
 
-.c.o:
-	$(CC) $(LIBS) $(CFLAGS) $< -o $@
+$(BUILD)/%.o: %.c
+	$(info -- CC $<)
+	@ mkdir -p $(dir $@) || true
+	@ $(CC) $< -o $@ $(CFLAGS) $(_LIBS)
 
 
 release:
@@ -50,14 +99,15 @@ release:
 
 
 bump:
-	bumpversion minor
+	bumpversion $(if $(V),$(V),minor)
 
 
 push:
 	git push
 	git push --tags
 
+
 clean-all: clean
 clean:
-	rm -f src/*.o src/{jpeg,omx}/*.o vgcore.* *.sock $(PROG)
-	rm -rf pkg src/$(PROG)-* src/v*.tar.gz v*.tar.gz $(PROG)-*.pkg.tar.xz
+	rm -rf pkg/arch/pkg pkg/arch/src pkg/arch/v*.tar.gz pkg/arch/ustreamer-*.pkg.tar.xz
+	rm -rf $(PROG) $(BUILD) vgcore.* *.sock

PKGBUILD

@@ -1,30 +0,0 @@
-# Contributor: Maxim Devaev <mdevaev@gmail.com>
-# Author: Maxim Devaev <mdevaev@gmail.com>
-
-
-pkgname=ustreamer
-pkgver=0.44
-pkgrel=1
-pkgdesc="Lightweight and fast MJPG-HTTP streamer"
-url="https://github.com/pi-kvm/ustreamer"
-license=(GPL)
-arch=(i686 x86_64 armv6h armv7h)
-depends=(libjpeg libevent libutil-linux)
-# optional: raspberrypi-firmware for OMX JPEG compressor
-makedepends=(gcc make)
-source=("$url/archive/v$pkgver.tar.gz")
-md5sums=(SKIP)
-
-
-build() {
-	cd $srcdir
-	rm -rf $pkgname-build
-	cp -r ustreamer-$pkgver $pkgname-build
-	cd $pkgname-build
-	make CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" $MAKEFLAGS
-}
-
-package() {
-	cd $srcdir/$pkgname-build
-	make DESTDIR="$pkgdir" PREFIX=/usr install
-}

README.md

@@ -2,7 +2,7 @@
 [[Русская версия]](README.ru.md)
 
 µStreamer is a lightweight and very quick server to broadcast [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 part of the [Pi-KVM](https://github.com/pi-kvm) 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 a part of the [Pi-KVM](https://github.com/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:
 
@@ -12,40 +12,37 @@
 | [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 broadcast <sup>1</sup> |
 | [DV-timings](https://linuxtv.org/downloads/v4l-dvb-apis/uapi/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 traffic | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes <sup>2</sup> | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
+| 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 broadcast parameters | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
-| Supported input devices | ![#ffaa00](https://placehold.it/15/ffaa00/000000?text=+) YUYV, UYVY,<br>RGB565, ~~MJPG~~ <sup>3</sup> | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) YUYV, UYVY,<br>RGB565, MJPG |
+| 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 to GPIO<br>on Raspberry Pi using [wiringPi](http://wiringpi.com) | ![#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 |
-| Option to serve files<br>with a built-in HTTP server, auth settings | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No <sup>4</sup> | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes |
 
 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 broadcasting 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 broadcast 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()```.
 
-  * ```3``` As µStreamer was made mainly to be used with screencast hardware it supports video formats they usually need. MJPG input means that the screencast device can compress images to JPEG and feed it to the software, which allows to cut down CPU usage and avoid software image encoding. This video format is supported by most webcams, but I've never seen it supported by screencast hardware: neither [Auvidea B101](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/), nor [EasyCap UTV 007](https://www.amazon.com/dp/B0126O0RDC) offer such support. It's not hard to add hardware MJPG sources support, it's just not done yet.
-
-  * ```4``` ...and there'll never be. µStreamer is designed UNIX-way, so if you need a small website with your broadcast, install NGINX.
-
 -----
 # TL;DR
 If you're going to live-stream from your backyard webcam and need to control it, use mjpg-streamer. If you need a high-quality image with high FPS - µStreamer for the win.
 
 -----
 # Building
-You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support, ```libjpeg8```/```libjpeg-turbo``` and ```libuuid```.
+You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support, ```libjpeg8```/```libjpeg-turbo```, ```libuuid``` and ```libbsd``` (only for Linux).
 
-It should compile automatically with OpenMAX IL on Raspberry Pi, if the corresponding headers are present in ```/opt/vc/include```.
+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 [wiringPi](http://wiringpi.com) 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/pi-kvm/ustreamer
+$ git clone --depth=1 https://github.com/pikvm/ustreamer
 $ cd ustreamer
 $ make
 $ ./ustreamer --help
 ```
 
-AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer
+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```. Same with GPIO.  
+FreeBSD port: https://www.freshports.org/multimedia/ustreamer.
 
 -----
 # Usage
@@ -59,9 +56,10 @@ The recommended way of running µStreamer with [Auvidea B101](https://www.raspbe
 $ ./ustreamer \
     --format=uyvy \ # Device input format
     --encoder=omx \ # Hardware encoding with OpenMAX
+    --workers=3 \ # Maximum workers for OpenMAX
+    --persistent \ # Don't re-initialize device on timeout (for example when HDMI cable was disconnected)
     --dv-timings \ # Use DV-timings
-    --quality=20 \ # OpenMAX has a non-linear quality scale
-    --drop-same-frames=30 # Save that traffic
+    --drop-same-frames=30 # Save the traffic
 ```
 
 You can always view the full list of options with ```ustreamer --help```.

README.ru.md

@@ -2,7 +2,7 @@
 [[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/pi-kvm) 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 [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) 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:
 
@@ -10,42 +10,39 @@
 |----------|---------------|-------------------|
 | 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 устройства<br>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/uapi/v4l/dv-timings.html) - возможности изменения <br>параметров разрешения трансляции на лету<br>по сигналу 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> |
+| 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/uapi/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 |
-| Поддерживаемые входные форматы устройств | ![#ffaa00](https://placehold.it/15/ffaa00/000000?text=+) YUYV, UYVY,<br>RGB565, ~~MJPG~~ <sup>3</sup> | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) YUYV, UYVY,<br>RGB565, MJPG |
+| 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>на Raspberry Pi с помощью [wiringPi](http://wiringpi.com) | ![#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 |
-| Возможность сервить файлы встроенным<br>HTTP-сервером, настройки авторизации | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет <sup>4</sup> | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть |
 
 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()```.
 
-  * ```3``` Поскольку µStreamer писался в первую очередь для устройств видеозахвата, в нем реализованы только те форматы, которые для них были нужны. MJPG в контексте входных данных означает, что устройство умеет самостоятельно сжимать картинку в JPEG и отдавать ее программе, что позволяет значительно снизить загрузку процессора и избавить его от необходимости кодировать картинку софтом. Этот формат поддерживается большинством веб-камер, но не поддерживается ни одним из встреченных мной устройств видеозахвата; его не умеет ни [Auvidea B101](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/), ни [EasyCap UTV 007](https://www.amazon.com/dp/B0126O0RDC). Нет никаких технических сложностей добавить поддержку аппаратного MJPG источника, но у меня просто пока не дошли до этого руки.
-
-  * ```4``` ... и не будет. µStreamer придерживается концепции UNIX-way, так что если вам нужно нарисовать маленький сайтик со встроенной трансляцией - просто поставьте NGINX.
-
 -----
 # TL;DR
 Если вам нужно вещать стрим с уличной камеры и управлять ее параметрами - возьмите mjpg-streamer. Если же вам нужно очень качественное изображение с высоким FPS - µStreamer ваш бро.
 
 -----
 # Сборка
-Для сборки вам понадобятся ```make```, ```gcc```, ```libevent``` с поддержкой ```pthreads```, ```libjpeg8```/```libjpeg-turbo``` и ```libuuid```.
+Для сборки вам понадобятся ```make```, ```gcc```, ```libevent``` с поддержкой ```pthreads```, ```libjpeg8```/```libjpeg-turbo```, ```libuuid``` и ```libbsd``` (только для Linux).
 
-На Raspberry Pi програма автоматически собирается с поддержкой OpenMAX IL, если обнаружит нужные хедеры в ```/opt/vc/include```.
+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 [wiringPi](http://wiringpi.com) 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/pi-kvm/ustreamer
+$ git clone --depth=1 https://github.com/pikvm/ustreamer
 $ cd ustreamer
 $ make
 $ ./ustreamer --help
 ```
 
-Для Arch Linux в AUR есть готовый пакет: https://aur.archlinux.org/packages/ustreamer
+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```. То же самое и с GPIO.  
+Порт для FreeBSD: https://www.freshports.org/multimedia/ustreamer.
 
 -----
 # Использование
@@ -59,8 +56,9 @@ $ ./ustreamer --help
 $ ./ustreamer \
     --format=uyvy \ # Настройка входного формата устройства
     --encoder=omx \ # Использование аппаратного кодирования с помощью OpenMAX
+    --workers=3 \ # Максимум воркеров для OpenMAX
+    --persistent \ # Не переинициализировать устройство при таймауте (например, когда был отключен HDMI-кабель)
     --dv-timings \ # Включение DV-таймингов
-    --quality=20 \ # У OpenMAX нелинейная шкала качества
     --drop-same-frames=30 # Экономим трафик
 ```
 

pkg/arch/PKGBUILD

@@ -0,0 +1,36 @@
+# Contributor: Maxim Devaev <mdevaev@gmail.com>
+# Author: Maxim Devaev <mdevaev@gmail.com>
+
+
+pkgname=ustreamer
+pkgver=1.7
+pkgrel=1
+pkgdesc="Lightweight and fast MJPG-HTTP streamer"
+url="https://github.com/pikvm/ustreamer"
+license=(GPL)
+arch=(i686 x86_64 armv6h armv7h)
+depends=(libjpeg libevent libutil-linux libbsd)
+# optional: raspberrypi-firmware for OMX encoder
+# optional: wiringpi for GPIO support
+makedepends=(gcc make)
+source=(${pkgname}::"git+https://github.com/pikvm/ustreamer#commit=v${pkgver}")
+md5sums=(SKIP)
+
+
+build() {
+	cd "$srcdir"
+	rm -rf $pkgname-build
+	cp -r $pkgname $pkgname-build
+	cd $pkgname-build
+
+	local _options=""
+	[ -e /opt/vc/include/IL/OMX_Core.h ] && _options="$_options WITH_OMX=1"
+	[ -e /usr/include/wiringPi.h ] && _options="$_options WITH_GPIO=1"
+
+	make $_options CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" $MAKEFLAGS
+}
+
+package() {
+	cd "$srcdir/$pkgname-build"
+	make DESTDIR="$pkgdir" PREFIX=/usr install
+}

pkg/gentoo/ustreamer-9999.ebuild

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

pkg/openwrt/Makefile

@@ -0,0 +1,45 @@
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ustreamer
+PKG_VERSION:=1.7
+PKG_RELEASE:=1
+PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/pikvm/ustreamer.git
+PKG_SOURCE_VERSION:=v$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+
+PKG_LICENSE:=GPL-3.0
+PKG_LICENSE_FILES:=LICENSE
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/ustreamer
+  SECTION:=multimedia
+  CATEGORY:=Multimedia
+  TITLE:=uStreamer
+  DEPENDS:=+libpthread +libjpeg +libv4l +libuuid +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
+endef
+
+define Package/ustreamer/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ustreamer $(1)/usr/bin/
+	$(INSTALL_DIR) $(1)/etc/config
+	$(CP) ./files/ustreamer.config $(1)/etc/config/ustreamer
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/ustreamer.init $(1)/etc/init.d/ustreamer
+endef
+
+$(eval $(call BuildPackage,ustreamer))

pkg/openwrt/files/ustreamer.config

@@ -0,0 +1,19 @@
+
+config ustreamer
+	option enabled '0'
+
+	option device '/dev/video0'
+	option device_timeout '5'
+	option input '0'
+
+	option resolution '640x480'
+	option format 'YUYV'
+	option quality '80'
+	option desired_fps '0'
+	option encoder 'CPU'
+
+	option host '::'
+	option port '8080'
+	option static ''
+	option user ''
+	option password ''

pkg/openwrt/files/ustreamer.init

@@ -0,0 +1,54 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2009-2019 OpenWrt.org
+
+START=90
+STOP=10
+
+USE_PROCD=1
+PROG=/usr/bin/ustreamer
+
+getcfg() {
+	config_get value ustreamer $1 $2
+	return "$value"
+}
+
+start_instance() {
+	config_get_bool enabled ustreamer enabled 0
+	[ "$enabled" -eq 0 ] && return
+
+	local options=""
+
+	options="$options --device='`getcfg device /dev/video0`'"
+	options="$options --device-timeout='`getcfg device_timeout 5`'"
+	options="$options --input='`getcfg input 0`'"
+
+	options="$options --resolution='`getcfg resolution 640x480`'"
+	options="$options --format='`getcfg format YUYV`'"
+	options="$options --quality='`getcfg quality 80`'"
+	options="$options --desired-fps='`getcfg desired_fps 0`'"
+	options="$options --encoder='`getcfg encoder CPU`'"
+
+	options="$options --host='`getcfg host '::'`'"
+	local port=`getcfg port 8080`
+	options="$options --port='$port'"
+	options="$options --static='`getcfg static ''`'"
+	options="$options --user='`getcfg user ''`'"
+	options="$options --passwd='`getcfg password ''`'"
+
+	config-get-bool opt_slowdown ustreamer slowdown 1
+	[ "$slowdown" -eq 1 ] && options="$options --slowdown"
+
+	procd_open_instance
+	procd_set_param command "$PROG" $options
+	procd_add_mdns http tcp "$port" daemon=ustreamer
+	procd_close_instance
+}
+
+start_service() {
+	config_load ustreamer
+	config_foreach start_instance ustreamer
+}
+
+service_triggers() {
+	procd_add_reload_trigger ustreamer
+}

src/config.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -21,4 +22,6 @@
 
 #pragma once
 
-#define VERSION "0.44"
+#ifndef VERSION
+#	define VERSION "1.7"
+#endif

src/data/blank_jpeg.h

@@ -1,688 +0,0 @@
-/*****************************************************************************
-#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-#                                                                            #
-#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-const unsigned BLANK_JPG_WIDTH = 640;
-const unsigned BLANK_JPG_HEIGHT = 480;
-
-const unsigned long BLANK_JPG_SIZE = 13845;
-
-const unsigned char BLANK_JPG_DATA[] = {
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-	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x7, 0xff, 0xd1, 0xaf, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0, 0x7, 0xff, 0xd2, 0xaf, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0, 0x0, 0x7, 0xff, 0xd9
-};

src/device.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,6 +20,8 @@
 *****************************************************************************/
 
 
+#include "device.h"
+
 #include <stdlib.h>
 #include <stddef.h>
 #include <stdbool.h>
@@ -26,15 +29,20 @@
 #include <strings.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <errno.h>
 #include <assert.h>
 
+#include <sys/select.h>
 #include <sys/mman.h>
+#include <sys/time.h>
+
 #include <linux/videodev2.h>
+#include <linux/v4l2-controls.h>
 
 #include "tools.h"
 #include "logging.h"
 #include "xioctl.h"
-#include "device.h"
+#include "picture.h"
 
 
 static const struct {
@@ -54,6 +62,9 @@ static const struct {
 	{"YUYV",	V4L2_PIX_FMT_YUYV},
 	{"UYVY",	V4L2_PIX_FMT_UYVY},
 	{"RGB565",	V4L2_PIX_FMT_RGB565},
+	{"RGB24",	V4L2_PIX_FMT_RGB24},
+	{"JPEG",	V4L2_PIX_FMT_MJPEG},
+	{"JPEG",	V4L2_PIX_FMT_JPEG},
 };
 
 
@@ -61,19 +72,30 @@ static int _device_open_check_cap(struct device_t *dev);
 static int _device_open_dv_timings(struct device_t *dev);
 static int _device_apply_dv_timings(struct device_t *dev);
 static int _device_open_format(struct device_t *dev);
-static void _device_open_alloc_picbufs(struct device_t *dev);
+static void _device_open_hw_fps(struct device_t *dev);
 static int _device_open_mmap(struct device_t *dev);
 static int _device_open_queue_buffers(struct device_t *dev);
-static int _device_apply_resolution(struct device_t *dev, const unsigned width, const unsigned height);
+static void _device_open_alloc_picbufs(struct device_t *dev);
+static int _device_apply_resolution(struct device_t *dev, unsigned width, unsigned height);
+static void _device_apply_controls(struct device_t *dev);
+static int _device_check_control(struct device_t *dev, const char *name, unsigned cid, int value, bool quiet);
+static void _device_set_control(struct device_t *dev, const char *name, unsigned cid, int value, bool quiet);
 
-static const char *_format_to_string_auto(char *buf, const size_t size, const unsigned format);
-static const char *_format_to_string_null(const unsigned format);
-static const char *_standard_to_string(const v4l2_std_id standard);
+static const char *_format_to_string_fourcc(char *buf, size_t size, unsigned format);
+static const char *_format_to_string_nullable(unsigned format);
+static const char *_format_to_string_supported(unsigned format);
+static const char *_standard_to_string(v4l2_std_id standard);
 
 
-struct device_t *device_init() {
+struct device_t *device_init(void) {
 	struct device_runtime_t *run;
 	struct device_t *dev;
+	long cores_sysconf;
+	unsigned cores_available;
+
+	cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
+	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
+	cores_available = max_u(min_u(cores_sysconf, 4), 1);
 
 	A_CALLOC(run, 1);
 	run->fd = -1;
@@ -84,8 +106,8 @@ struct device_t *device_init() {
 	dev->height = 480;
 	dev->format = V4L2_PIX_FMT_YUYV;
 	dev->standard = V4L2_STD_UNKNOWN;
-	dev->n_buffers = max_u(sysconf(_SC_NPROCESSORS_ONLN), 1) + 1;
-	dev->n_workers = dev->n_buffers;
+	dev->n_buffers = cores_available + 1;
+	dev->n_workers = min_u(cores_available, dev->n_buffers);
 	dev->timeout = 1;
 	dev->error_delay = 1;
 	dev->run = run;
@@ -97,8 +119,8 @@ void device_destroy(struct device_t *dev) {
 	free(dev);
 }
 
-int device_parse_format(const char *const str) {
-	for (unsigned index = 0; index < sizeof(_FORMATS) / sizeof(_FORMATS[0]); ++index) {
+int device_parse_format(const char *str) {
+	for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
 		if (!strcasecmp(str, _FORMATS[index].name)) {
 			return _FORMATS[index].format;
 		}
@@ -106,8 +128,8 @@ int device_parse_format(const char *const str) {
 	return FORMAT_UNKNOWN;
 }
 
-v4l2_std_id device_parse_standard(const char *const str) {
-	for (unsigned index = 1; index < sizeof(_STANDARDS) / sizeof(_STANDARDS[0]); ++index) {
+v4l2_std_id device_parse_standard(const char *str) {
+	for (unsigned index = 1; index < ARRAY_LEN(_STANDARDS); ++index) {
 		if (!strcasecmp(str, _STANDARDS[index].name)) {
 			return _STANDARDS[index].standard;
 		}
@@ -131,6 +153,7 @@ int device_open(struct device_t *dev) {
 	if (_device_open_format(dev) < 0) {
 		goto error;
 	}
+	_device_open_hw_fps(dev);
 	if (_device_open_mmap(dev) < 0) {
 		goto error;
 	}
@@ -138,6 +161,9 @@ int device_open(struct device_t *dev) {
 		goto error;
 	}
 	_device_open_alloc_picbufs(dev);
+	_device_apply_controls(dev);
+
+	dev->run->n_workers = min_u(dev->run->n_buffers, dev->n_workers);
 
 	LOG_DEBUG("Device fd=%d initialized", dev->run->fd);
 	return 0;
@@ -148,11 +174,12 @@ int device_open(struct device_t *dev) {
 }
 
 void device_close(struct device_t *dev) {
+	dev->run->n_workers = 0;
+
 	if (dev->run->pictures) {
 		LOG_DEBUG("Releasing picture buffers ...");
-		for (unsigned index = 0; index < dev->run->n_buffers && dev->run->pictures[index].data; ++index) {
-			free(dev->run->pictures[index].data);
-			dev->run->pictures[index].data = NULL;
+		for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
+			picture_destroy(dev->run->pictures[index]);
 		}
 		free(dev->run->pictures);
 		dev->run->pictures = NULL;
@@ -161,11 +188,15 @@ void device_close(struct device_t *dev) {
 	if (dev->run->hw_buffers) {
 		LOG_DEBUG("Unmapping HW buffers ...");
 		for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
-			if (dev->run->hw_buffers[index].start != MAP_FAILED) {
-				if (munmap(dev->run->hw_buffers[index].start, dev->run->hw_buffers[index].length) < 0) {
+#			define HW_BUFFER(_next) dev->run->hw_buffers[index]._next
+
+			if (HW_BUFFER(allocated) > 0 && HW_BUFFER(data) != MAP_FAILED) {
+				if (munmap(HW_BUFFER(data), HW_BUFFER(allocated)) < 0) {
 					LOG_PERROR("Can't unmap device buffer %u", index);
 				}
 			}
+
+#			undef HW_BUFFER
 		}
 		dev->run->n_buffers = 0;
 		free(dev->run->hw_buffers);
@@ -183,6 +214,111 @@ void device_close(struct device_t *dev) {
 	}
 }
 
+int device_switch_capturing(struct device_t *dev, bool enable) {
+	if (enable != dev->run->capturing) {
+		enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+		LOG_DEBUG("Calling ioctl(%s) ...", (enable ? "VIDIOC_STREAMON" : "VIDIOC_STREAMOFF"));
+		if (xioctl(dev->run->fd, (enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
+			LOG_PERROR("Unable to %s capturing", (enable ? "start" : "stop"));
+			if (enable) {
+				return -1;
+			}
+		}
+
+		dev->run->capturing = enable;
+		LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
+	}
+    return 0;
+}
+
+int device_select(struct device_t *dev, bool *has_read, bool *has_write, bool *has_error) {
+	struct timeval timeout;
+	int retval;
+
+#	define INIT_FD_SET(_set) \
+		fd_set _set; FD_ZERO(&_set); FD_SET(dev->run->fd, &_set);
+
+	INIT_FD_SET(read_fds);
+	INIT_FD_SET(write_fds);
+	INIT_FD_SET(error_fds);
+
+#	undef INIT_FD_SET
+
+	timeout.tv_sec = dev->timeout;
+	timeout.tv_usec = 0;
+
+	LOG_DEBUG("Calling select() on video device ...");
+
+	retval = select(dev->run->fd + 1, &read_fds, &write_fds, &error_fds, &timeout);
+	if (retval > 0) {
+		*has_read = FD_ISSET(dev->run->fd, &read_fds);
+		*has_write = FD_ISSET(dev->run->fd, &write_fds);
+		*has_error = FD_ISSET(dev->run->fd, &error_fds);
+	} else {
+		has_read = false;
+		has_write = false;
+		has_error = false;
+	}
+
+	LOG_DEBUG("Device select() --> %d", retval);
+	return retval;
+}
+
+int device_grab_buffer(struct device_t *dev) {
+	struct v4l2_buffer buf_info;
+
+	MEMSET_ZERO(buf_info);
+	buf_info.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	buf_info.memory = V4L2_MEMORY_MMAP;
+
+	LOG_DEBUG("Calling ioctl(VIDIOC_DQBUF) ...");
+	if (xioctl(dev->run->fd, VIDIOC_DQBUF, &buf_info) < 0) {
+		LOG_PERROR("Unable to dequeue buffer");
+		return -1;
+	}
+
+	LOG_DEBUG("Got a new frame in buffer: index=%u, bytesused=%u", buf_info.index, buf_info.bytesused);
+	if (buf_info.index >= dev->run->n_buffers) {
+		LOG_ERROR("Got invalid buffer: index=%u, nbuffers=%u", buf_info.index, dev->run->n_buffers);
+		return -1;
+	}
+
+	dev->run->hw_buffers[buf_info.index].used = buf_info.bytesused;
+	memcpy(&dev->run->hw_buffers[buf_info.index].buf_info, &buf_info, sizeof(struct v4l2_buffer));
+	dev->run->pictures[buf_info.index]->grab_time = get_now_monotonic();
+	return buf_info.index;
+}
+
+int device_release_buffer(struct device_t *dev, unsigned index) {
+	LOG_DEBUG("Calling ioctl(VIDIOC_QBUF) ...");
+	if (xioctl(dev->run->fd, VIDIOC_QBUF, &dev->run->hw_buffers[index].buf_info) < 0) {
+		LOG_PERROR("Unable to requeue buffer");
+		return -1;
+	}
+	dev->run->hw_buffers[index].used = 0;
+	return 0;
+}
+
+int device_consume_event(struct device_t *dev) {
+	struct v4l2_event event;
+
+	LOG_DEBUG("Calling ioctl(VIDIOC_DQEVENT) ...");
+	if (xioctl(dev->run->fd, VIDIOC_DQEVENT, &event) == 0) {
+		switch (event.type) {
+			case V4L2_EVENT_SOURCE_CHANGE:
+				LOG_INFO("Got V4L2_EVENT_SOURCE_CHANGE: source changed");
+				return -1;
+			case V4L2_EVENT_EOS:
+				LOG_INFO("Got V4L2_EVENT_EOS: end of stream (ignored)");
+				return 0;
+		}
+	} else {
+		LOG_PERROR("Got some V4L2 device event, but where is it? ");
+	}
+	return 0;
+}
+
 static int _device_open_check_cap(struct device_t *dev) {
 	struct v4l2_capability cap;
 	int input = dev->input; // Needs pointer to int for ioctl()
@@ -196,7 +332,7 @@ static int _device_open_check_cap(struct device_t *dev) {
 	}
 
 	if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
-		LOG_ERROR("Video capture not supported by our device");
+		LOG_ERROR("Video capture not supported by the device");
 		return -1;
 	}
 
@@ -226,7 +362,7 @@ static int _device_open_check_cap(struct device_t *dev) {
 static int _device_open_dv_timings(struct device_t *dev) {
 	_device_apply_resolution(dev, dev->width, dev->height);
 	if (dev->dv_timings) {
-		LOG_DEBUG("Using DV-timings");
+		LOG_DEBUG("Using DV timings");
 
 		if (_device_apply_dv_timings(dev) < 0) {
 			return -1;
@@ -247,26 +383,22 @@ static int _device_open_dv_timings(struct device_t *dev) {
 }
 
 static int _device_apply_dv_timings(struct device_t *dev) {
-	struct v4l2_dv_timings dv_timings;
+	struct v4l2_dv_timings dv;
 
-	MEMSET_ZERO(dv_timings);
+	MEMSET_ZERO(dv);
 
 	LOG_DEBUG("Calling ioctl(VIDIOC_QUERY_DV_TIMINGS) ...");
-	if (xioctl(dev->run->fd, VIDIOC_QUERY_DV_TIMINGS, &dv_timings) == 0) {
-		LOG_INFO(
-			"Got new DV timings: resolution=%ux%u; pixclk=%llu",
-			dv_timings.bt.width,
-			dv_timings.bt.height,
-			dv_timings.bt.pixelclock
-		);
+	if (xioctl(dev->run->fd, VIDIOC_QUERY_DV_TIMINGS, &dv) == 0) {
+		LOG_INFO("Got new DV timings: resolution=%ux%u, pixclk=%llu",
+			dv.bt.width, dv.bt.height, dv.bt.pixelclock);
 
 		LOG_DEBUG("Calling ioctl(VIDIOC_S_DV_TIMINGS) ...");
-		if (xioctl(dev->run->fd, VIDIOC_S_DV_TIMINGS, &dv_timings) < 0) {
+		if (xioctl(dev->run->fd, VIDIOC_S_DV_TIMINGS, &dv) < 0) {
 			LOG_PERROR("Failed to set DV timings");
 			return -1;
 		}
 
-		if (_device_apply_resolution(dev, dv_timings.bt.width, dv_timings.bt.height) < 0) {
+		if (_device_apply_resolution(dev, dv.bt.width, dv.bt.height) < 0) {
 			return -1;
 		}
 
@@ -296,14 +428,10 @@ static int _device_open_format(struct device_t *dev) {
 	// Set format
 	LOG_DEBUG("Calling ioctl(VIDIOC_S_FMT) ...");
 	if (xioctl(dev->run->fd, VIDIOC_S_FMT, &fmt) < 0) {
-		char format_str[8];
-
-		LOG_PERROR(
-			"Unable to set format=%s; resolution=%ux%u",
-			_format_to_string_auto(format_str, 8, dev->format),
+		LOG_PERROR("Unable to set pixelformat=%s, resolution=%ux%u",
+			_format_to_string_supported(dev->format),
 			dev->run->width,
-			dev->run->height
-		);
+			dev->run->height);
 		return -1;
 	}
 
@@ -318,31 +446,69 @@ static int _device_open_format(struct device_t *dev) {
 
 	// Check format
 	if (fmt.fmt.pix.pixelformat != dev->format) {
-		char format_requested_str[8];
 		char format_obtained_str[8];
 		char *format_str_nullable;
 
-		LOG_ERROR(
-			"Could not obtain the requested pixelformat=%s; driver gave us %s",
-			_format_to_string_auto(format_requested_str, 8, dev->format),
-			_format_to_string_auto(format_obtained_str, 8, fmt.fmt.pix.pixelformat)
-		);
+		LOG_ERROR("Could not obtain the requested pixelformat=%s; driver gave us %s",
+			_format_to_string_supported(dev->format),
+			_format_to_string_supported(fmt.fmt.pix.pixelformat));
 
-		if ((format_str_nullable = (char *)_format_to_string_null(fmt.fmt.pix.pixelformat)) != NULL) {
-			LOG_INFO(
-				"Falling back to %s mode (consider using '--format=%s' option)",
-				format_str_nullable,
-				format_str_nullable
-			);
+		if ((format_str_nullable = (char *)_format_to_string_nullable(fmt.fmt.pix.pixelformat)) != NULL) {
+			LOG_INFO("Falling back to pixelformat=%s", format_str_nullable);
 		} else {
-			LOG_ERROR("Unsupported pixel format");
+			LOG_ERROR("Unsupported pixelformat=%s (fourcc)",
+				_format_to_string_fourcc(format_obtained_str, 8, fmt.fmt.pix.pixelformat));
 			return -1;
 		}
 	}
+
 	dev->run->format = fmt.fmt.pix.pixelformat;
+	LOG_INFO("Using pixelformat: %s", _format_to_string_supported(dev->run->format));
 	return 0;
 }
 
+static void _device_open_hw_fps(struct device_t *dev) {
+	struct v4l2_streamparm setfps;
+
+	MEMSET_ZERO(setfps);
+	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+	LOG_DEBUG("Calling ioctl(VIDIOC_G_PARM) ...");
+	if (xioctl(dev->run->fd, VIDIOC_G_PARM, &setfps) < 0) {
+		if (errno == ENOTTY) { // Quiet message for Auvidea B101
+			LOG_INFO("Quierying HW FPS changing is not supported");
+		} else {
+			LOG_PERROR("Unable to query HW FPS changing");
+		}
+		return;
+	}
+
+	if (!(setfps.parm.capture.capability & V4L2_CAP_TIMEPERFRAME)) {
+		LOG_INFO("Changing HW FPS is not supported");
+		return;
+	}
+
+#	define SETFPS_TPF(_next) setfps.parm.capture.timeperframe._next
+
+	MEMSET_ZERO(setfps);
+	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	SETFPS_TPF(numerator) = 1;
+	SETFPS_TPF(denominator) = (dev->desired_fps == 0 ? 255 : dev->desired_fps);
+
+	if (xioctl(dev->run->fd, VIDIOC_S_PARM, &setfps) < 0) {
+		LOG_PERROR("Unable to set HW FPS");
+		return;
+	}
+
+	if (dev->desired_fps != SETFPS_TPF(denominator)) {
+		LOG_INFO("Using HW FPS: %u -> %u (coerced)", dev->desired_fps, SETFPS_TPF(denominator));
+	} else {
+		LOG_INFO("Using HW FPS: %u", dev->desired_fps);
+	}
+
+#	undef SETFPS_TPF
+}
+
 static int _device_open_mmap(struct device_t *dev) {
 	struct v4l2_requestbuffers req;
 
@@ -352,7 +518,7 @@ static int _device_open_mmap(struct device_t *dev) {
 	req.memory = V4L2_MEMORY_MMAP;
 
 	LOG_DEBUG("Calling ioctl(VIDIOC_REQBUFS) ...");
-	if (xioctl(dev->run->fd, VIDIOC_REQBUFS, &req)) {
+	if (xioctl(dev->run->fd, VIDIOC_REQBUFS, &req) < 0) {
 		LOG_PERROR("Device '%s' doesn't support memory mapping", dev->path);
 		return -1;
 	}
@@ -381,13 +547,17 @@ static int _device_open_mmap(struct device_t *dev) {
 			return -1;
 		}
 
+#		define HW_BUFFER(_next) dev->run->hw_buffers[dev->run->n_buffers]._next
+
 		LOG_DEBUG("Mapping device buffer %u ...", dev->run->n_buffers);
-		dev->run->hw_buffers[dev->run->n_buffers].length = buf_info.length;
-		dev->run->hw_buffers[dev->run->n_buffers].start = mmap(NULL, buf_info.length, PROT_READ|PROT_WRITE, MAP_SHARED, dev->run->fd, buf_info.m.offset);
-		if (dev->run->hw_buffers[dev->run->n_buffers].start == MAP_FAILED) {
+		HW_BUFFER(data) = mmap(NULL, buf_info.length, PROT_READ|PROT_WRITE, MAP_SHARED, dev->run->fd, buf_info.m.offset);
+		if (HW_BUFFER(data) == MAP_FAILED) {
 			LOG_PERROR("Can't map device buffer %u", dev->run->n_buffers);
 			return -1;
 		}
+		HW_BUFFER(allocated) = buf_info.length;
+
+#		undef HW_BUFFER
 	}
 	return 0;
 }
@@ -411,25 +581,26 @@ static int _device_open_queue_buffers(struct device_t *dev) {
 }
 
 static void _device_open_alloc_picbufs(struct device_t *dev) {
+	size_t picture_size = picture_get_generous_size(dev->run->width, dev->run->height);
+
 	LOG_DEBUG("Allocating picture buffers ...");
 	A_CALLOC(dev->run->pictures, dev->run->n_buffers);
 
-	dev->run->max_picture_size = ((dev->run->width * dev->run->height) << 1) * 2;
 	for (unsigned index = 0; index < dev->run->n_buffers; ++index) {
-		LOG_DEBUG("Allocating picture buffer %u sized %lu bytes... ", index, dev->run->max_picture_size);
-		A_CALLOC(dev->run->pictures[index].data, dev->run->max_picture_size);
-		dev->run->pictures[index].allocated = dev->run->max_picture_size;
+		dev->run->pictures[index] = picture_init();
+		LOG_DEBUG("Pre-allocating picture buffer %u sized %zu bytes... ", index, picture_size);
+		picture_realloc_data(dev->run->pictures[index], picture_size);
 	}
 }
 
-static int _device_apply_resolution(struct device_t *dev, const unsigned width, const unsigned height) {
+static int _device_apply_resolution(struct device_t *dev, unsigned width, unsigned height) {
 	// Тут VIDEO_MIN_* не используются из-за странностей минимального разрешения при отсутствии сигнала
 	// у некоторых устройств, например Auvidea B101
 	if (
 		width == 0 || width > VIDEO_MAX_WIDTH
 		|| height == 0 || height > VIDEO_MAX_HEIGHT
 	) {
-		LOG_ERROR("Requested forbidden resolution=%ux%u: min=1x1; max=%ux%u",
+		LOG_ERROR("Requested forbidden resolution=%ux%u: min=1x1, max=%ux%u",
 			width, height, VIDEO_MAX_WIDTH, VIDEO_MAX_HEIGHT);
 		return -1;
 	}
@@ -438,12 +609,85 @@ static int _device_apply_resolution(struct device_t *dev, const unsigned width,
 	return 0;
 }
 
-static const char *_format_to_string_auto(char *buf, const size_t size, const unsigned format) {
+static void _device_apply_controls(struct device_t *dev) {
+#	define SET_CID(_cid, _dest, _value, _quiet) { \
+			if (_device_check_control(dev, #_dest, _cid, _value, _quiet) == 0) { \
+				_device_set_control(dev, #_dest, _cid, _value, _quiet); \
+			} \
+		}
+
+#	define SET_CID_MANUAL(_cid, _dest) { \
+			if (dev->ctl._dest.value_set) { \
+				SET_CID(_cid, _dest, dev->ctl._dest.value, false); \
+			} \
+		}
+
+#	define SET_CID_AUTO(_cid_auto, _cid_manual, _dest) { \
+			if (dev->ctl._dest.value_set || dev->ctl._dest.auto_set) { \
+				SET_CID(_cid_auto, _dest##_auto, dev->ctl._dest.auto_set, dev->ctl._dest.value_set); \
+				SET_CID_MANUAL(_cid_manual, _dest); \
+			} \
+		}
+
+	SET_CID_AUTO	(V4L2_CID_AUTOBRIGHTNESS,		V4L2_CID_BRIGHTNESS,				brightness);
+	SET_CID_MANUAL	(								V4L2_CID_CONTRAST,					contrast);
+	SET_CID_MANUAL	(								V4L2_CID_SATURATION,				saturation);
+	SET_CID_AUTO	(V4L2_CID_HUE_AUTO,				V4L2_CID_HUE,						hue);
+	SET_CID_MANUAL	(								V4L2_CID_GAMMA,						gamma);
+	SET_CID_MANUAL	(								V4L2_CID_SHARPNESS,					sharpness);
+	SET_CID_MANUAL	(								V4L2_CID_BACKLIGHT_COMPENSATION,	backlight_compensation);
+	SET_CID_AUTO	(V4L2_CID_AUTO_WHITE_BALANCE,	V4L2_CID_WHITE_BALANCE_TEMPERATURE,	white_balance);
+	SET_CID_AUTO	(V4L2_CID_AUTOGAIN,				V4L2_CID_GAIN,						gain);
+
+#	undef SET_CID_AUTO
+#	undef SET_CID_MANUAL
+#	undef SET_CID
+}
+
+static int _device_check_control(struct device_t *dev, const char *name, unsigned cid, int value, bool quiet) {
+	struct v4l2_queryctrl query;
+
+	MEMSET_ZERO(query);
+	query.id = cid;
+
+	if (xioctl(dev->run->fd, VIDIOC_QUERYCTRL, &query) < 0 || query.flags & V4L2_CTRL_FLAG_DISABLED) {
+		if (!quiet) {
+			LOG_ERROR("Changing control %s is unsupported", name);
+		}
+		return -1;
+	}
+	if (value < query.minimum || value > query.maximum || value % query.step != 0) {
+		if (!quiet) {
+			LOG_ERROR("Invalid value %d of control %s: min=%d, max=%d, default=%d, step=%u",
+				value, name, query.minimum, query.maximum, query.default_value, query.step);
+		}
+		return -2;
+	}
+	return 0;
+}
+
+static void _device_set_control(struct device_t *dev, const char *name, unsigned cid, int value, bool quiet) {
+	struct v4l2_control ctl;
+
+	MEMSET_ZERO(ctl);
+	ctl.id = cid;
+	ctl.value = value;
+
+	if (xioctl(dev->run->fd, VIDIOC_S_CTRL, &ctl) < 0) {
+		if (!quiet) {
+			LOG_PERROR("Can't set control %s", name);
+		}
+	} else if (!quiet) {
+		LOG_INFO("Using control %s: %d", name, ctl.value);
+	}
+}
+
+static const char *_format_to_string_fourcc(char *buf, size_t size, unsigned format) {
 	assert(size >= 8);
-	buf[0] = format & 0x7f;
-	buf[1] = (format >> 8) & 0x7f;
-	buf[2] = (format >> 16) & 0x7f;
-	buf[3] = (format >> 24) & 0x7f;
+	buf[0] = format & 0x7F;
+	buf[1] = (format >> 8) & 0x7F;
+	buf[2] = (format >> 16) & 0x7F;
+	buf[3] = (format >> 24) & 0x7F;
 	if (format & (1 << 31)) {
 		buf[4] = '-';
 		buf[5] = 'B';
@@ -455,8 +699,8 @@ static const char *_format_to_string_auto(char *buf, const size_t size, const un
 	return buf;
 }
 
-static const char *_format_to_string_null(const unsigned format) {
-    for (unsigned index = 0; index < sizeof(_FORMATS) / sizeof(_FORMATS[0]); ++index) {
+static const char *_format_to_string_nullable(unsigned format) {
+    for (unsigned index = 0; index < ARRAY_LEN(_FORMATS); ++index) {
 		if (format == _FORMATS[index].format) {
 			return _FORMATS[index].name;
 		}
@@ -464,8 +708,13 @@ static const char *_format_to_string_null(const unsigned format) {
     return NULL;
 }
 
+static const char *_format_to_string_supported(unsigned format) {
+	const char *format_str = _format_to_string_nullable(format);
+	return (format_str == NULL ? "unsupported" : format_str);
+}
+
 static const char *_standard_to_string(v4l2_std_id standard) {
-	for (unsigned index = 0; index < sizeof(_STANDARDS) / sizeof(_STANDARDS[0]); ++index) {
+	for (unsigned index = 0; index < ARRAY_LEN(_STANDARDS); ++index) {
 		if (standard == _STANDARDS[index].standard) {
 			return _STANDARDS[index].name;
 		}

src/device.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -23,36 +24,32 @@
 
 #include <stddef.h>
 #include <stdbool.h>
-#include <signal.h>
 
 #include <linux/videodev2.h>
 
+#include "picture.h"
 
-#define VIDEO_MIN_WIDTH		320
-#define VIDEO_MAX_WIDTH		1920
 
-#define VIDEO_MIN_HEIGHT	180
-#define VIDEO_MAX_HEIGHT	1200
+#define VIDEO_MIN_WIDTH		160
+#define VIDEO_MAX_WIDTH		10240
+
+#define VIDEO_MIN_HEIGHT	120
+#define VIDEO_MAX_HEIGHT	4320
+
+#define VIDEO_MAX_FPS		120
 
 #define STANDARD_UNKNOWN	V4L2_STD_UNKNOWN
-#define STANDARDS_STR		"UNKNOWN, PAL, NTSC, SECAM"
+#define STANDARDS_STR		"PAL, NTSC, SECAM"
 
 #define FORMAT_UNKNOWN	-1
-#define FORMATS_STR		"YUYV, UYVY, RGB565"
+#define FORMATS_STR		"YUYV, UYVY, RGB565, RGB24, JPEG"
 
 
 struct hw_buffer_t {
-	void	*start;
-	size_t	length;
-};
-
-struct picture_t {
-	unsigned char	*data;
-	unsigned long	size;
-	unsigned long	allocated;
-	long double		grab_time;
-	long double		encode_begin_time;
-	long double		encode_end_time;
+	unsigned char		*data;
+	size_t				used;
+	size_t				allocated;
+	struct v4l2_buffer	buf_info;
 };
 
 struct device_runtime_t {
@@ -63,11 +60,28 @@ struct device_runtime_t {
 	unsigned			n_buffers;
 	unsigned			n_workers;
 	struct hw_buffer_t	*hw_buffers;
-	struct picture_t	*pictures;
-	unsigned long		max_picture_size;
+	struct picture_t	**pictures;
 	bool				capturing;
 };
 
+struct control_t {
+	int		value;
+	bool	value_set;
+	bool	auto_set;
+};
+
+struct controls_t {
+	struct control_t brightness;
+	struct control_t contrast;
+	struct control_t saturation;
+	struct control_t hue;
+	struct control_t gamma;
+	struct control_t sharpness;
+	struct control_t backlight_compensation;
+	struct control_t white_balance;
+	struct control_t gain;
+};
+
 struct device_t {
 	char			*path;
 	unsigned		input;
@@ -79,21 +93,28 @@ struct device_t {
 	unsigned		n_buffers;
 	unsigned		n_workers;
 	unsigned		desired_fps;
-	unsigned		min_frame_size;
+	size_t			min_frame_size;
 	bool			persistent;
 	unsigned		timeout;
 	unsigned		error_delay;
 
+	struct controls_t ctl;
+
 	struct device_runtime_t *run;
-	sig_atomic_t volatile stop;
 };
 
 
-struct device_t *device_init();
+struct device_t *device_init(void);
 void device_destroy(struct device_t *dev);
 
-int device_parse_format(const char *const str);
-v4l2_std_id device_parse_standard(const char *const str);
+int device_parse_format(const char *str);
+v4l2_std_id device_parse_standard(const char *str);
 
 int device_open(struct device_t *dev);
 void device_close(struct device_t *dev);
+
+int device_switch_capturing(struct device_t *dev, bool enable);
+int device_select(struct device_t *dev, bool *has_read, bool *has_write, bool *has_error);
+int device_grab_buffer(struct device_t *dev);
+int device_release_buffer(struct device_t *dev, unsigned index);
+int device_consume_event(struct device_t *dev);

src/encoder.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,18 +20,24 @@
 *****************************************************************************/
 
 
+#include "encoder.h"
+
+#include <stdlib.h>
+#include <stdbool.h>
 #include <strings.h>
 #include <assert.h>
 
+#include <linux/videodev2.h>
+
 #include "tools.h"
+#include "threading.h"
 #include "logging.h"
 #include "device.h"
-#include "encoder.h"
 
-#include "jpeg/encoder.h"
-
-#ifdef OMX_ENCODER
-#	include "omx/encoder.h"
+#include "encoders/cpu/encoder.h"
+#include "encoders/hw/encoder.h"
+#ifdef WITH_OMX
+#	include "encoders/omx/encoder.h"
 #endif
 
 
@@ -39,80 +46,47 @@ static const struct {
 	const enum encoder_type_t type;
 } _ENCODER_TYPES[] = {
 	{"CPU",	ENCODER_TYPE_CPU},
-#	ifdef OMX_ENCODER
+	{"HW",	ENCODER_TYPE_HW},
+#	ifdef WITH_OMX
 	{"OMX",	ENCODER_TYPE_OMX},
 #	endif
 };
 
 
-struct encoder_t *encoder_init() {
+struct encoder_t *encoder_init(void) {
+	struct encoder_runtime_t *run;
 	struct encoder_t *encoder;
 
+	A_CALLOC(run, 1);
+	run->type = ENCODER_TYPE_CPU;
+	run->quality = 80;
+	A_MUTEX_INIT(&run->mutex);
+
 	A_CALLOC(encoder, 1);
-	encoder->type = ENCODER_TYPE_CPU;
-	encoder->quality = 80;
+	encoder->type = run->type;
+	encoder->quality = run->quality;
+	encoder->run = run;
 	return encoder;
 }
 
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic push
-void encoder_prepare(struct encoder_t *encoder, struct device_t *dev) {
-#pragma GCC diagnostic pop
-
-	assert(encoder->type != ENCODER_TYPE_UNKNOWN);
-
-	if (encoder->type != ENCODER_TYPE_CPU) {
-		LOG_DEBUG("Initializing encoder ...");
-	}
-
-	LOG_INFO("Using JPEG quality: %u%%", encoder->quality);
-
-#	ifdef OMX_ENCODER
-	if (encoder->type == ENCODER_TYPE_OMX) {
-		if (dev->n_workers > OMX_MAX_ENCODERS) {
-			LOG_INFO(
-				"OMX-based encoder can only work with %u worker threads; forced --workers=%u",
-				OMX_MAX_ENCODERS, OMX_MAX_ENCODERS
-			);
-			dev->n_workers = OMX_MAX_ENCODERS;
-		}
-		encoder->n_omxs = dev->n_workers;
-
-		A_CALLOC(encoder->omxs, encoder->n_omxs);
-		for (unsigned index = 0; index < encoder->n_omxs; ++index) {
-			if ((encoder->omxs[index] = omx_encoder_init()) == NULL) {
-				goto use_fallback;
-			}
-		}
-	}
-#	endif
-
-	return;
-
-#	pragma GCC diagnostic ignored "-Wunused-label"
-#	pragma GCC diagnostic push
-	use_fallback:
-		LOG_ERROR("Can't initialize selected encoder, using CPU instead it");
-		encoder->type = ENCODER_TYPE_CPU;
-#	pragma GCC diagnostic pop
-}
-
 void encoder_destroy(struct encoder_t *encoder) {
-#	ifdef OMX_ENCODER
-	if (encoder->omxs) {
-		for (unsigned index = 0; index < encoder->n_omxs; ++index) {
-			if (encoder->omxs[index]) {
-				omx_encoder_destroy(encoder->omxs[index]);
+#	ifdef WITH_OMX
+	if (encoder->run->omxs) {
+		for (unsigned index = 0; index < encoder->run->n_omxs; ++index) {
+			if (encoder->run->omxs[index]) {
+				omx_encoder_destroy(encoder->run->omxs[index]);
 			}
 		}
-		free(encoder->omxs);
+		free(encoder->run->omxs);
 	}
 #	endif
+	A_MUTEX_DESTROY(&encoder->run->mutex);
+	free(encoder->run);
 	free(encoder);
 }
 
-enum encoder_type_t encoder_parse_type(const char *const str) {
-	for (unsigned index = 0; index < sizeof(_ENCODER_TYPES) / sizeof(_ENCODER_TYPES[0]); ++index) {
+enum encoder_type_t encoder_parse_type(const char *str) {
+	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
 		if (!strcasecmp(str, _ENCODER_TYPES[index].name)) {
 			return _ENCODER_TYPES[index].type;
 		}
@@ -120,58 +94,142 @@ enum encoder_type_t encoder_parse_type(const char *const str) {
 	return ENCODER_TYPE_UNKNOWN;
 }
 
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic push
-void encoder_prepare_live(struct encoder_t *encoder, struct device_t *dev) {
-	assert(encoder->type != ENCODER_TYPE_UNKNOWN);
+const char *encoder_type_to_string(enum encoder_type_t type) {
+	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
+		if (_ENCODER_TYPES[index].type == type) {
+			return _ENCODER_TYPES[index].name;
+		}
+	}
+	return _ENCODER_TYPES[0].name;
+}
 
-#pragma GCC diagnostic pop
-#	ifdef OMX_ENCODER
-	if (encoder->type == ENCODER_TYPE_OMX) {
-		for (unsigned index = 0; index < encoder->n_omxs; ++index) {
-			if (omx_encoder_prepare_live(encoder->omxs[index], dev, encoder->quality) < 0) {
-				goto use_fallback;
+void encoder_prepare(struct encoder_t *encoder, struct device_t *dev) {
+	enum encoder_type_t type = (encoder->run->cpu_forced ? ENCODER_TYPE_CPU : encoder->type);
+	unsigned quality = encoder->quality;
+	bool cpu_forced = false;
+
+	if ((dev->run->format == V4L2_PIX_FMT_MJPEG || dev->run->format == V4L2_PIX_FMT_JPEG) && type != ENCODER_TYPE_HW) {
+		LOG_INFO("Switching to HW encoder because the input format is (M)JPEG");
+		type = ENCODER_TYPE_HW;
+	}
+
+	if (type == ENCODER_TYPE_HW) {
+		if (dev->run->format != V4L2_PIX_FMT_MJPEG && dev->run->format != V4L2_PIX_FMT_JPEG) {
+			LOG_INFO("Switching to CPU encoder because the input format is not (M)JPEG");
+			goto use_cpu;
+		}
+
+		if (hw_encoder_prepare(dev, quality) < 0) {
+			quality = 0;
+		}
+
+		dev->run->n_workers = 1;
+	}
+#	ifdef WITH_OMX
+	else if (type == ENCODER_TYPE_OMX) {
+		for (unsigned index = 0; index < encoder->n_glitched_resolutions; ++index) {
+			if (
+				encoder->glitched_resolutions[index][0] == dev->run->width
+				&& encoder->glitched_resolutions[index][1] == dev->run->height
+			) {
+				LOG_INFO("Switching to CPU encoder the resolution %ux%u marked as glitchy for OMX",
+					dev->run->width, dev->run->height);
+				goto use_cpu;
+			}
+		}
+
+		LOG_DEBUG("Preparing OMX encoder ...");
+
+		if (dev->run->n_workers > OMX_MAX_ENCODERS) {
+			LOG_INFO("OMX encoder sets limit for worker threads: %u", OMX_MAX_ENCODERS);
+			dev->run->n_workers = OMX_MAX_ENCODERS;
+		}
+
+		if (encoder->run->omxs == NULL) {
+			A_CALLOC(encoder->run->omxs, OMX_MAX_ENCODERS);
+		}
+
+		// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
+		for (; encoder->run->n_omxs < dev->run->n_workers; ++encoder->run->n_omxs) {
+			if ((encoder->run->omxs[encoder->run->n_omxs] = omx_encoder_init()) == NULL) {
+				LOG_ERROR("Can't initialize OMX encoder, falling back to CPU");
+				goto force_cpu;
+			}
+		}
+
+		for (unsigned index = 0; index < encoder->run->n_omxs; ++index) {
+			if (omx_encoder_prepare(encoder->run->omxs[index], dev, quality) < 0) {
+				LOG_ERROR("Can't prepare OMX encoder, falling back to CPU");
+				goto force_cpu;
 			}
 		}
 	}
 #	endif
 
-	return;
+	goto ok;
 
 #	pragma GCC diagnostic ignored "-Wunused-label"
 #	pragma GCC diagnostic push
-	use_fallback:
-		LOG_ERROR("Can't prepare selected encoder, falling back to CPU");
-		encoder->type = ENCODER_TYPE_CPU;
+	force_cpu:
+		cpu_forced = true;
 #	pragma GCC diagnostic pop
+
+	use_cpu:
+		type = ENCODER_TYPE_CPU;
+		quality = encoder->quality;
+
+	ok:
+		if (quality == 0) {
+			LOG_INFO("Using JPEG quality: encoder default");
+		} else {
+			LOG_INFO("Using JPEG quality: %u%%", quality);
+		}
+
+		A_MUTEX_LOCK(&encoder->run->mutex);
+		encoder->run->type = type;
+		encoder->run->quality = quality;
+		if (cpu_forced) {
+			encoder->run->cpu_forced = true;
+		}
+		A_MUTEX_UNLOCK(&encoder->run->mutex);
 }
 
-#pragma GCC diagnostic ignored "-Wunused-label"
+#pragma GCC diagnostic ignored "-Wunused-parameter"
 #pragma GCC diagnostic push
-int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev,
-	const unsigned worker_number, const unsigned buf_index) {
+int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev, unsigned worker_number, unsigned buf_index) {
 #pragma GCC diagnostic pop
 
-	assert(encoder->type != ENCODER_TYPE_UNKNOWN);
+	assert(encoder->run->type != ENCODER_TYPE_UNKNOWN);
 
-	if (encoder->type == ENCODER_TYPE_CPU) {
-		jpeg_encoder_compress_buffer(dev, buf_index, encoder->quality);
+	dev->run->pictures[buf_index]->encode_begin_time = get_now_monotonic();
+
+	if (encoder->run->type == ENCODER_TYPE_CPU) {
+		cpu_encoder_compress_buffer(dev, buf_index, encoder->run->quality);
+	} else if (encoder->run->type == ENCODER_TYPE_HW) {
+		hw_encoder_compress_buffer(dev, buf_index);
 	}
-#	ifdef OMX_ENCODER
-	else if (encoder->type == ENCODER_TYPE_OMX) {
-		if (omx_encoder_compress_buffer(encoder->omxs[worker_number], dev, buf_index) < 0) {
+#	ifdef WITH_OMX
+	else if (encoder->run->type == ENCODER_TYPE_OMX) {
+		if (omx_encoder_compress_buffer(encoder->run->omxs[worker_number], dev, buf_index) < 0) {
 			goto error;
 		}
 	}
 #	endif
 
+	dev->run->pictures[buf_index]->encode_end_time = get_now_monotonic();
+
+	dev->run->pictures[buf_index]->width = dev->run->width;
+	dev->run->pictures[buf_index]->height = dev->run->height;
+
 	return 0;
 
 #	pragma GCC diagnostic ignored "-Wunused-label"
 #	pragma GCC diagnostic push
 	error:
-		LOG_INFO("HW compressing error, falling back to CPU");
-		encoder->type = ENCODER_TYPE_CPU;
+		LOG_INFO("Error while compressing buffer, falling back to CPU");
+		A_MUTEX_LOCK(&encoder->run->mutex);
+		encoder->run->cpu_forced = true;
+		A_MUTEX_UNLOCK(&encoder->run->mutex);
 		return -1;
 #	pragma GCC diagnostic pop
 }

src/encoder.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -21,46 +22,67 @@
 
 #pragma once
 
-#include "tools.h"
+#include <stdbool.h>
+
+#include <pthread.h>
+
 #include "device.h"
 
-#ifdef OMX_ENCODER
-#	include "omx/encoder.h"
+#ifdef WITH_OMX
+#	include "encoders/omx/encoder.h"
+
 #	define ENCODER_TYPES_OMX_HINT ", OMX"
+
+#	ifndef MAX_GLITCHED_RESOLUTIONS
+#		define MAX_GLITCHED_RESOLUTIONS 1024
+#	endif
 #else
 #	define ENCODER_TYPES_OMX_HINT ""
 #endif
 
 
 #define ENCODER_TYPES_STR \
-	"CPU" \
+	"CPU, HW" \
 	ENCODER_TYPES_OMX_HINT
 
 enum encoder_type_t {
 	ENCODER_TYPE_UNKNOWN, // Only for encoder_parse_type() and main()
 	ENCODER_TYPE_CPU,
-#ifdef OMX_ENCODER
+	ENCODER_TYPE_HW,
+#	ifdef WITH_OMX
 	ENCODER_TYPE_OMX,
-#endif
+#	endif
+};
+
+struct encoder_runtime_t {
+	enum encoder_type_t	type;
+	unsigned			quality;
+	bool				cpu_forced;
+	pthread_mutex_t		mutex;
+
+#	ifdef WITH_OMX
+	unsigned				n_omxs;
+	struct omx_encoder_t	**omxs;
+#	endif
 };
 
 struct encoder_t {
-	enum encoder_type_t		type;
-	unsigned				quality;
-#ifdef OMX_ENCODER
-	unsigned				n_omxs;
-	struct omx_encoder_t	**omxs;
-#endif
+	enum encoder_type_t	type;
+	unsigned			quality;
+#	ifdef WITH_OMX
+	unsigned	n_glitched_resolutions;
+	unsigned	glitched_resolutions[2][MAX_GLITCHED_RESOLUTIONS];
+#	endif
+
+	struct encoder_runtime_t *run;
 };
 
 
-struct encoder_t *encoder_init();
+struct encoder_t *encoder_init(void);
 void encoder_destroy(struct encoder_t *encoder);
 
-enum encoder_type_t encoder_parse_type(const char *const str);
+enum encoder_type_t encoder_parse_type(const char *str);
+const char *encoder_type_to_string(enum encoder_type_t type);
 
 void encoder_prepare(struct encoder_t *encoder, struct device_t *dev);
-void encoder_prepare_live(struct encoder_t *encoder, struct device_t *dev);
-
-int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev,
-	const unsigned worker_number, const unsigned buf_index);
+int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev, unsigned worker_number, unsigned buf_index);

src/encoders/cpu/encoder.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    This source file based on code of MJPG-Streamer.                        #
@@ -24,61 +25,61 @@
 *****************************************************************************/
 
 
+#include "encoder.h"
+
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 #include <assert.h>
 
 #include <jpeglib.h>
+
 #include <linux/videodev2.h>
 
-#include "../tools.h"
-#include "../device.h"
-
-#include "encoder.h"
+#include "../../tools.h"
+#include "../../picture.h"
+#include "../../device.h"
 
 
-struct _mjpg_destination_mgr {
-	struct			jpeg_destination_mgr mgr; // Default manager
-	JOCTET			*buffer; // Start of buffer
-	unsigned char	*outbuffer_cursor;
-	unsigned long	*written;
+struct _jpeg_dest_manager_t {
+	struct				jpeg_destination_mgr mgr; // Default manager
+	JOCTET				*buffer; // Start of buffer
+	struct picture_t	*picture;
 };
 
 
-static void _jpeg_set_dest_picture(j_compress_ptr jpeg, unsigned char *picture, unsigned long *written);
+static void _jpeg_set_picture(j_compress_ptr jpeg, struct picture_t *picture);
 
-static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg,
-    unsigned char *line_buffer, const unsigned char *data,
-    const unsigned width, const unsigned height);
+static void _jpeg_write_scanlines_yuyv(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height);
 
-static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg,
-	unsigned char *line_buffer, const unsigned char *data,
-	const unsigned width, const unsigned height);
+static void _jpeg_write_scanlines_uyvy(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height);
 
-static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg,
-	unsigned char *line_buffer, const unsigned char *data,
-	const unsigned width, const unsigned height);
+static void _jpeg_write_scanlines_rgb565(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height);
+
+static void _jpeg_write_scanlines_rgb24(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height);
 
 static void _jpeg_init_destination(j_compress_ptr jpeg);
 static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg);
 static void _jpeg_term_destination(j_compress_ptr jpeg);
 
 
-void jpeg_encoder_compress_buffer(struct device_t *dev, const unsigned index, const unsigned quality) {
+void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned quality) {
 	// This function based on compress_image_to_jpeg() from mjpg-streamer
 
 	struct jpeg_compress_struct jpeg;
 	struct jpeg_error_mgr jpeg_error;
-	unsigned char *line_buffer;
-
-	A_CALLOC(line_buffer, dev->run->width * 3);
 
 	jpeg.err = jpeg_std_error(&jpeg_error);
 	jpeg_create_compress(&jpeg);
 
-	dev->run->pictures[index].size = 0;
-	_jpeg_set_dest_picture(&jpeg, dev->run->pictures[index].data, &dev->run->pictures[index].size);
+	_jpeg_set_picture(&jpeg, dev->run->pictures[index]);
 
 	jpeg.image_width = dev->run->width;
 	jpeg.image_height = dev->run->height;
@@ -90,50 +91,59 @@ void jpeg_encoder_compress_buffer(struct device_t *dev, const unsigned index, co
 
 	jpeg_start_compress(&jpeg, TRUE);
 
-#	define WRITE_SCANLINES(_func) \
-		_func(&jpeg, line_buffer, dev->run->hw_buffers[index].start, dev->run->width, dev->run->height)
+#	define WRITE_SCANLINES(_format, _func) \
+		case _format: { _func(&jpeg, dev->run->hw_buffers[index].data, dev->run->width, dev->run->height); break; }
+
 	switch (dev->run->format) {
 		// https://www.fourcc.org/yuv.php
-		case V4L2_PIX_FMT_YUYV: WRITE_SCANLINES(_jpeg_write_scanlines_yuyv); break;
-		case V4L2_PIX_FMT_UYVY: WRITE_SCANLINES(_jpeg_write_scanlines_uyvy); break;
-		case V4L2_PIX_FMT_RGB565: WRITE_SCANLINES(_jpeg_write_scanlines_rgb565); break;
-		default: assert(0 && "Unsupported input format for JPEG compressor");
+		WRITE_SCANLINES(V4L2_PIX_FMT_YUYV, _jpeg_write_scanlines_yuyv);
+		WRITE_SCANLINES(V4L2_PIX_FMT_UYVY, _jpeg_write_scanlines_uyvy);
+		WRITE_SCANLINES(V4L2_PIX_FMT_RGB565, _jpeg_write_scanlines_rgb565);
+		WRITE_SCANLINES(V4L2_PIX_FMT_RGB24, _jpeg_write_scanlines_rgb24);
+		default: assert(0 && "Unsupported input format for CPU encoder");
 	}
+
 #	undef WRITE_SCANLINES
 
-	// TODO: process jpeg errors:
-	// https://stackoverflow.com/questions/19857766/error-handling-in-libjpeg
 	jpeg_finish_compress(&jpeg);
 	jpeg_destroy_compress(&jpeg);
-	free(line_buffer);
-	assert(dev->run->pictures[index].size > 0);
-	assert(dev->run->pictures[index].size <= dev->run->max_picture_size);
+
+	assert(dev->run->pictures[index]->used > 0);
 }
 
-static void _jpeg_set_dest_picture(j_compress_ptr jpeg, unsigned char *picture, unsigned long *written) {
-	struct _mjpg_destination_mgr *dest;
+static void _jpeg_set_picture(j_compress_ptr jpeg, struct picture_t *picture) {
+	struct _jpeg_dest_manager_t *dest;
 
 	if (jpeg->dest == NULL) {
 		assert((jpeg->dest = (struct jpeg_destination_mgr *)(*jpeg->mem->alloc_small)(
-			(j_common_ptr) jpeg, JPOOL_PERMANENT, sizeof(struct _mjpg_destination_mgr)
+			(j_common_ptr) jpeg, JPOOL_PERMANENT, sizeof(struct _jpeg_dest_manager_t)
 		)));
 	}
 
-	dest = (struct _mjpg_destination_mgr *) jpeg->dest;
+	dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
 	dest->mgr.init_destination = _jpeg_init_destination;
 	dest->mgr.empty_output_buffer = _jpeg_empty_output_buffer;
 	dest->mgr.term_destination = _jpeg_term_destination;
-	dest->outbuffer_cursor = picture;
-	dest->written = written;
+	dest->picture = picture;
+
+	picture->used = 0;
 }
 
-static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg,
-	unsigned char *line_buffer, const unsigned char *data,
-	const unsigned width, const unsigned height) {
+#define YUV_R(_y, _, _v)	(((_y) + (359 * (_v))) >> 8)
+#define YUV_G(_y, _u, _v)	(((_y) - (88 * (_u)) - (183 * (_v))) >> 8)
+#define YUV_B(_y, _u, _)	(((_y) + (454 * (_u))) >> 8)
+#define NORM_COMPONENT(_x)	(((_x) > 255) ? 255 : (((_x) < 0) ? 0 : (_x)))
 
+static void _jpeg_write_scanlines_yuyv(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height) {
+
+	unsigned char *line_buffer;
 	JSAMPROW scanlines[1];
 	unsigned z = 0;
 
+	A_CALLOC(line_buffer, width * 3);
+
 	while (jpeg->next_scanline < height) {
 		unsigned char *ptr = line_buffer;
 
@@ -142,13 +152,13 @@ static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg,
 			int u = data[1] - 128;
 			int v = data[3] - 128;
 
-			int r = (y + (359 * v)) >> 8;
-			int g = (y - (88 * u) - (183 * v)) >> 8;
-			int b = (y + (454 * u)) >> 8;
+			int r = YUV_R(y, u, v);
+			int g = YUV_G(y, u, v);
+			int b = YUV_B(y, u, v);
 
-			*(ptr++) = (r > 255) ? 255 : ((r < 0) ? 0 : r);
-			*(ptr++) = (g > 255) ? 255 : ((g < 0) ? 0 : g);
-			*(ptr++) = (b > 255) ? 255 : ((b < 0) ? 0 : b);
+			*(ptr++) = NORM_COMPONENT(r);
+			*(ptr++) = NORM_COMPONENT(g);
+			*(ptr++) = NORM_COMPONENT(b);
 
 			if (z++) {
 				z = 0;
@@ -159,16 +169,21 @@ static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg,
 		scanlines[0] = line_buffer;
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 	}
+
+	free(line_buffer);
 }
 
-static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg,
-	unsigned char *line_buffer, const unsigned char *data,
-	const unsigned width, const unsigned height) {
+static void _jpeg_write_scanlines_uyvy(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height) {
 
+	unsigned char *line_buffer;
 	JSAMPROW scanlines[1];
 	unsigned z = 0;
 
-	while(jpeg->next_scanline < height) {
+	A_CALLOC(line_buffer, width * 3);
+
+	while (jpeg->next_scanline < height) {
 		unsigned char *ptr = line_buffer;
 
 		for(unsigned x = 0; x < width; ++x) {
@@ -176,13 +191,13 @@ static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg,
 			int u = data[0] - 128;
 			int v = data[2] - 128;
 
-			int r = (y + (359 * v)) >> 8;
-			int g = (y - (88 * u) - (183 * v)) >> 8;
-			int b = (y + (454 * u)) >> 8;
+			int r = YUV_R(y, u, v);
+			int g = YUV_G(y, u, v);
+			int b = YUV_B(y, u, v);
 
-			*(ptr++) = (r > 255) ? 255 : ((r < 0) ? 0 : r);
-			*(ptr++) = (g > 255) ? 255 : ((g < 0) ? 0 : g);
-			*(ptr++) = (b > 255) ? 255 : ((b < 0) ? 0 : b);
+			*(ptr++) = NORM_COMPONENT(r);
+			*(ptr++) = NORM_COMPONENT(g);
+			*(ptr++) = NORM_COMPONENT(b);
 
 			if (z++) {
 				z = 0;
@@ -193,23 +208,33 @@ static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg,
 		scanlines[0] = line_buffer;
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 	}
+
+	free(line_buffer);
 }
 
-static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg,
-	unsigned char *line_buffer, const unsigned char *data,
-	const unsigned width, const unsigned height) {
+#undef NORM_COMPONENT
+#undef YUV_B
+#undef YUV_G
+#undef YUV_R
 
+static void _jpeg_write_scanlines_rgb565(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height) {
+
+	unsigned char *line_buffer;
 	JSAMPROW scanlines[1];
 
-	while(jpeg->next_scanline < height) {
+	A_CALLOC(line_buffer, width * 3);
+
+	while (jpeg->next_scanline < height) {
 		unsigned char *ptr = line_buffer;
 
 		for(unsigned x = 0; x < width; ++x) {
 			unsigned int two_byte = (data[1] << 8) + data[0];
 
-			*(ptr++) = data[1] & 248;
-			*(ptr++) = (unsigned char)((two_byte & 2016) >> 3);
-			*(ptr++) = (data[0] & 31) * 8;
+			*(ptr++) = data[1] & 248; // Red
+			*(ptr++) = (unsigned char)((two_byte & 2016) >> 3); // Green
+			*(ptr++) = (data[0] & 31) * 8; // Blue
 
 			data += 2;
 		}
@@ -217,12 +242,26 @@ static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg,
 		scanlines[0] = line_buffer;
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 	}
+
+	free(line_buffer);
 }
 
-#define JPEG_OUTPUT_BUFFER_SIZE  4096
+static void _jpeg_write_scanlines_rgb24(
+	struct jpeg_compress_struct *jpeg, const unsigned char *data,
+	unsigned width, unsigned height) {
+
+	JSAMPROW scanlines[1];
+
+	while (jpeg->next_scanline < height) {
+		scanlines[0] = (unsigned char *)(data + jpeg->next_scanline * width * 3);
+		jpeg_write_scanlines(jpeg, scanlines, 1);
+	}
+}
+
+#define JPEG_OUTPUT_BUFFER_SIZE 4096
 
 static void _jpeg_init_destination(j_compress_ptr jpeg) {
-	struct _mjpg_destination_mgr *dest = (struct _mjpg_destination_mgr *) jpeg->dest;
+	struct _jpeg_dest_manager_t *dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
 
 	// Allocate the output buffer - it will be released when done with image
 	assert((dest->buffer = (JOCTET *)(*jpeg->mem->alloc_small)(
@@ -236,11 +275,9 @@ static void _jpeg_init_destination(j_compress_ptr jpeg) {
 static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg) {
 	// Called whenever local jpeg buffer fills up
 
-	struct _mjpg_destination_mgr *dest = (struct _mjpg_destination_mgr *) jpeg->dest;
+	struct _jpeg_dest_manager_t *dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
 
-	memcpy(dest->outbuffer_cursor, dest->buffer, JPEG_OUTPUT_BUFFER_SIZE);
-	dest->outbuffer_cursor += JPEG_OUTPUT_BUFFER_SIZE;
-	*dest->written += JPEG_OUTPUT_BUFFER_SIZE;
+	picture_append_data(dest->picture, dest->buffer, JPEG_OUTPUT_BUFFER_SIZE);
 
 	dest->mgr.next_output_byte = dest->buffer;
 	dest->mgr.free_in_buffer = JPEG_OUTPUT_BUFFER_SIZE;
@@ -250,15 +287,13 @@ static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg) {
 
 static void _jpeg_term_destination(j_compress_ptr jpeg) {
 	// Called by jpeg_finish_compress after all data has been written.
-	// Usually needs to flush buffer
+	// Usually needs to flush buffer.
 
-	struct _mjpg_destination_mgr *dest = (struct _mjpg_destination_mgr *) jpeg->dest;
-	size_t data_count = JPEG_OUTPUT_BUFFER_SIZE - dest->mgr.free_in_buffer;
+	struct _jpeg_dest_manager_t *dest = (struct _jpeg_dest_manager_t *)jpeg->dest;
+	size_t final = JPEG_OUTPUT_BUFFER_SIZE - dest->mgr.free_in_buffer;
 
-	// Write any data remaining in the buffer
-	memcpy(dest->outbuffer_cursor, dest->buffer, data_count);
-	dest->outbuffer_cursor += data_count;
-	*dest->written += data_count;
+	// Write any data remaining in the buffer.
+	picture_append_data(dest->picture, dest->buffer, final);
 }
 
 #undef JPEG_OUTPUT_BUFFER_SIZE

src/encoders/cpu/encoder.h

@@ -0,0 +1,28 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include "../../device.h"
+
+
+void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned quality);

src/encoders/hw/encoder.c

@@ -0,0 +1,109 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    This source file based on code of MJPG-Streamer.                        #
+#                                                                            #
+#    Copyright (C) 2005-2006  Laurent Pinchart & Michel Xhaard               #
+#    Copyright (C) 2006  Gabriel A. Devenyi                                  #
+#    Copyright (C) 2007  Tom Stöveken                                        #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "encoder.h"
+
+#include <stdbool.h>
+#include <string.h>
+#include <assert.h>
+
+#include <linux/videodev2.h>
+
+#include "../../tools.h"
+#include "../../logging.h"
+#include "../../xioctl.h"
+#include "../../picture.h"
+#include "../../device.h"
+
+#include "huffman.h"
+
+
+void _copy_plus_huffman(const struct hw_buffer_t *src, struct picture_t *dest);
+static bool _is_huffman(const unsigned char *data);
+
+
+int hw_encoder_prepare(struct device_t *dev, unsigned quality) {
+	struct v4l2_jpegcompression comp;
+
+	MEMSET_ZERO(comp);
+
+	if (xioctl(dev->run->fd, VIDIOC_G_JPEGCOMP, &comp) < 0) {
+		LOG_ERROR("Device does not support setting of HW encoding quality parameters");
+		return -1;
+	}
+	comp.quality = quality;
+	if (xioctl(dev->run->fd, VIDIOC_S_JPEGCOMP, &comp) < 0) {
+		LOG_ERROR("Unable to change MJPG quality for JPEG source with HW pass-through encoder");
+		return -1;
+	}
+	return 0;
+}
+
+void hw_encoder_compress_buffer(struct device_t *dev, unsigned index) {
+	if (dev->run->format != V4L2_PIX_FMT_MJPEG && dev->run->format != V4L2_PIX_FMT_JPEG) {
+		assert(0 && "Unsupported input format for HW encoder");
+	}
+	_copy_plus_huffman(&dev->run->hw_buffers[index], dev->run->pictures[index]);
+}
+
+void _copy_plus_huffman(const struct hw_buffer_t *src, struct picture_t *dest) {
+	if (!_is_huffman(src->data)) {
+		const unsigned char *src_ptr = src->data;
+		const unsigned char *src_end = src->data + src->used;
+		size_t paste;
+
+		while ((((src_ptr[0] << 8) | src_ptr[1]) != 0xFFC0) && (src_ptr < src_end)) {
+			src_ptr += 1;
+		}
+		if (src_ptr >= src_end) {
+			dest->used = 0; // Error
+			return;
+		}
+		paste = src_ptr - src->data;
+
+		picture_set_data(dest, src->data, paste);
+		picture_append_data(dest, HUFFMAN_TABLE, sizeof(HUFFMAN_TABLE));
+		picture_append_data(dest, src_ptr, src->used - paste);
+	} else {
+		picture_set_data(dest, src->data, src->used);
+	}
+}
+
+static bool _is_huffman(const unsigned char *data) {
+	unsigned count = 0;
+
+	while (((data[0] << 8) | data[1]) != 0xFFDA) {
+		if (count++ > 2048) {
+			return false;
+		}
+		if (((data[0] << 8) | data[1]) == 0xFFC4) {
+			return true;
+		}
+		data += 1;
+	}
+	return false;
+}

src/encoders/hw/encoder.h

@@ -0,0 +1,29 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include "../../device.h"
+
+
+int hw_encoder_prepare(struct device_t *dev, unsigned quality);
+void hw_encoder_compress_buffer(struct device_t *dev, unsigned index);

src/encoders/hw/huffman.h

@@ -0,0 +1,66 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    This source file based on code of MJPG-Streamer.                        #
+#                                                                            #
+#    Copyright (C) 2005-2006  Laurent Pinchart & Michel Xhaard               #
+#    Copyright (C) 2006  Gabriel A. Devenyi                                  #
+#    Copyright (C) 2007  Tom Stöveken                                        #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    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
+
+static const unsigned char HUFFMAN_TABLE[] = {
+	0xFF, 0xC4, 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02,
+	0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x01, 0x00, 0x03,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
+	0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05,
+	0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04,
+	0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22,
+	0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
+	0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17,
+	0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36,
+	0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
+	0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
+	0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
+	0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95,
+	0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+	0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2,
+	0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5,
+	0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9,
+	0xFA, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
+	0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04,
+	0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22,
+	0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33,
+	0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25,
+	0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x35, 0x36,
+	0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
+	0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
+	0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
+	0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94,
+	0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
+	0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA,
+	0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4,
+	0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+	0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
+};

src/encoders/omx/component.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,44 +20,45 @@
 *****************************************************************************/
 
 
+#include "component.h"
+
 #include <unistd.h>
 
 #include <IL/OMX_Core.h>
 #include <IL/OMX_Component.h>
 
-#include "../logging.h"
+#include "../../logging.h"
 
 #include "formatters.h"
-#include "component.h"
 
 
-static int _component_wait_port_changed(OMX_HANDLETYPE *component, const OMX_U32 port, const OMX_BOOL enabled);
-static int _component_wait_state_changed(OMX_HANDLETYPE *component, const OMX_STATETYPE wanted);
+static int _component_wait_port_changed(OMX_HANDLETYPE *component, OMX_U32 port, OMX_BOOL enabled);
+static int _component_wait_state_changed(OMX_HANDLETYPE *component, OMX_STATETYPE wanted);
 
 
-int component_enable_port(OMX_HANDLETYPE *component, const OMX_U32 port) {
+int component_enable_port(OMX_HANDLETYPE *component, OMX_U32 port) {
 	OMX_ERRORTYPE error;
 
 	LOG_DEBUG("Enabling OMX port %u ...", port);
 	if ((error = OMX_SendCommand(*component, OMX_CommandPortEnable, port, NULL)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't enable OMX port %u", port);
+		LOG_ERROR_OMX(error, "Can't enable OMX port %u", port);
 		return -1;
 	}
 	return _component_wait_port_changed(component, port, OMX_TRUE);
 }
 
-int component_disable_port(OMX_HANDLETYPE *component, const OMX_U32 port) {
+int component_disable_port(OMX_HANDLETYPE *component, OMX_U32 port) {
 	OMX_ERRORTYPE error;
 
 	LOG_DEBUG("Disabling OMX port %u ...", port);
 	if ((error = OMX_SendCommand(*component, OMX_CommandPortDisable, port, NULL)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't disable OMX port %u", port);
+		LOG_ERROR_OMX(error, "Can't disable OMX port %u", port);
 		return -1;
 	}
 	return _component_wait_port_changed(component, port, OMX_FALSE);
 }
 
-int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef, const OMX_U32 port) {
+int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef, OMX_U32 port) {
 	OMX_ERRORTYPE error;
 
 	OMX_INIT_STRUCTURE(*portdef);
@@ -64,7 +66,7 @@ int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYP
 
 	LOG_DEBUG("Fetching OMX port %u definition ...", port);
 	if ((error = OMX_GetParameter(*component, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't get OMX port %u definition", port);
+		LOG_ERROR_OMX(error, "Can't get OMX port %u definition", port);
 		return -1;
 	}
 	return 0;
@@ -75,14 +77,14 @@ int component_set_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYP
 
 	LOG_DEBUG("Writing OMX port %u definition ...", portdef->nPortIndex);
 	if ((error = OMX_SetParameter(*component, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't set OMX port %u definition", portdef->nPortIndex);
+		LOG_ERROR_OMX(error, "Can't set OMX port %u definition", portdef->nPortIndex);
 		return -1;
 	}
 	return 0;
 }
 
-int component_set_state(OMX_HANDLETYPE *component, const OMX_STATETYPE state) {
-	const char *const state_str = omx_state_to_string(state);
+int component_set_state(OMX_HANDLETYPE *component, OMX_STATETYPE state) {
+	const char *state_str = omx_state_to_string(state);
 	OMX_ERRORTYPE error;
 	int retries = 50;
 
@@ -94,7 +96,7 @@ int component_set_state(OMX_HANDLETYPE *component, const OMX_STATETYPE state) {
 			return _component_wait_state_changed(component, state);
 		} else if (error == OMX_ErrorInsufficientResources && retries) {
 			// Иногда железо не инициализируется, хз почему, просто ретраим, со второй попытки сработает
-			LOG_OMX_ERROR(error, "Can't switch OMX component state to %s, need to retry", state_str);
+			LOG_ERROR_OMX(error, "Can't switch OMX component state to %s, need to retry", state_str);
 			retries -= 1;
 			usleep(8000);
 		} else {
@@ -102,12 +104,12 @@ int component_set_state(OMX_HANDLETYPE *component, const OMX_STATETYPE state) {
 		}
 	} while (retries);
 
-	LOG_OMX_ERROR(error, "Can't switch OMX component state to %s", state_str);
+	LOG_ERROR_OMX(error, "Can't switch OMX component state to %s", state_str);
 	return -1;
 }
 
 
-static int _component_wait_port_changed(OMX_HANDLETYPE *component, const OMX_U32 port, const OMX_BOOL enabled) {
+static int _component_wait_port_changed(OMX_HANDLETYPE *component, OMX_U32 port, OMX_BOOL enabled) {
 	OMX_ERRORTYPE error;
 	OMX_PARAM_PORTDEFINITIONTYPE portdef;
 	int retries = 50;
@@ -117,7 +119,7 @@ static int _component_wait_port_changed(OMX_HANDLETYPE *component, const OMX_U32
 
 	do {
 		if ((error = OMX_GetParameter(*component, OMX_IndexParamPortDefinition, &portdef)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't get OMX port %u definition for waiting", port);
+			LOG_ERROR_OMX(error, "Can't get OMX port %u definition for waiting", port);
 			return -1;
 		}
 
@@ -132,14 +134,14 @@ static int _component_wait_port_changed(OMX_HANDLETYPE *component, const OMX_U32
 	return (portdef.bEnabled == enabled ? 0 : -1);
 }
 
-static int _component_wait_state_changed(OMX_HANDLETYPE *component, const OMX_STATETYPE wanted) {
+static int _component_wait_state_changed(OMX_HANDLETYPE *component, OMX_STATETYPE wanted) {
 	OMX_ERRORTYPE error;
 	OMX_STATETYPE state;
 	int retries = 50;
 
 	do {
 		if ((error = OMX_GetState(*component, &state)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Failed to get OMX component state");
+			LOG_ERROR_OMX(error, "Failed to get OMX component state");
 			return -1;
 		}
 

src/encoders/omx/component.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -38,10 +39,10 @@
 	}
 
 
-int component_enable_port(OMX_HANDLETYPE *component, const OMX_U32 port);
-int component_disable_port(OMX_HANDLETYPE *component, const OMX_U32 port);
+int component_enable_port(OMX_HANDLETYPE *component, OMX_U32 port);
+int component_disable_port(OMX_HANDLETYPE *component, OMX_U32 port);
 
-int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef, const OMX_U32 port);
+int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef, OMX_U32 port);
 int component_set_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYPE *portdef);
 
-int component_set_state(OMX_HANDLETYPE *component, const OMX_STATETYPE state);
+int component_set_state(OMX_HANDLETYPE *component, OMX_STATETYPE state);

src/encoders/omx/encoder.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,6 +20,8 @@
 *****************************************************************************/
 
 
+#include "encoder.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -32,17 +35,17 @@
 #include <IL/OMX_Broadcom.h>
 #include <interface/vcos/vcos_semaphore.h>
 
-#include "../logging.h"
-#include "../tools.h"
-#include "../device.h"
+#include "../../logging.h"
+#include "../../tools.h"
+#include "../../picture.h"
+#include "../../device.h"
 
 #include "formatters.h"
 #include "component.h"
-#include "encoder.h"
 
 
-#define INPUT_PORT 340
-#define OUTPUT_PORT 341
+static const OMX_U32 _INPUT_PORT = 340;
+static const OMX_U32 _OUTPUT_PORT = 341;
 
 
 static int _i_omx = 0;
@@ -51,21 +54,24 @@ static int _i_omx = 0;
 static int _omx_init_component(struct omx_encoder_t *omx);
 static int _omx_init_disable_ports(struct omx_encoder_t *omx);
 static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev);
-static int _omx_setup_output(struct omx_encoder_t *omx, const unsigned quality);
+static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality);
 static int _omx_encoder_clear_ports(struct omx_encoder_t *omx);
 
-static OMX_ERRORTYPE _omx_event_handler(UNUSED OMX_HANDLETYPE encoder,
+static OMX_ERRORTYPE _omx_event_handler(
+	UNUSED OMX_HANDLETYPE encoder,
 	OMX_PTR v_omx, OMX_EVENTTYPE event, OMX_U32 data1,
 	UNUSED OMX_U32 data2, UNUSED OMX_PTR event_data);
 
-static OMX_ERRORTYPE _omx_input_required_handler(UNUSED OMX_HANDLETYPE encoder,
+static OMX_ERRORTYPE _omx_input_required_handler(
+	UNUSED OMX_HANDLETYPE encoder,
 	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer);
 
-static OMX_ERRORTYPE _omx_output_available_handler(UNUSED OMX_HANDLETYPE encoder,
+static OMX_ERRORTYPE _omx_output_available_handler(
+	UNUSED OMX_HANDLETYPE encoder,
 	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer);
 
 
-struct omx_encoder_t *omx_encoder_init() {
+struct omx_encoder_t *omx_encoder_init(void) {
 	// Some theory:
 	//   - http://www.fourcc.org/yuv.php
 	//   - https://kwasi-ich.de/blog/2017/11/26/omx/
@@ -74,6 +80,7 @@ struct omx_encoder_t *omx_encoder_init() {
 	//   - https://github.com/gagle/raspberrypi-openmax-jpeg/blob/master/jpeg.c
 	//   - https://www.raspberrypi.org/forums/viewtopic.php?t=154790
 	//   - https://bitbucket.org/bensch128/omxjpegencode/src/master/jpeg_encoder.cpp
+	//   - http://home.nouwen.name/RaspberryPi/documentation/ilcomponents/image_encode.html
 
 	struct omx_encoder_t *omx;
 	OMX_ERRORTYPE error;
@@ -87,13 +94,13 @@ struct omx_encoder_t *omx_encoder_init() {
 
 		LOG_INFO("Initializing OMX ...");
 		if ((error = OMX_Init()) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't initialize OMX");
+			LOG_ERROR_OMX(error, "Can't initialize OMX");
 			goto error;
 		}
 	}
 	_i_omx += 1;
 
-	LOG_INFO("Initializing OMX JPEG encoder ...");
+	LOG_INFO("Initializing OMX encoder ...");
 
 	if (vcos_semaphore_create(&omx->handler_lock, "handler_lock", 0) != VCOS_SUCCESS) {
 		LOG_ERROR("Can't create VCOS semaphore");
@@ -119,7 +126,7 @@ struct omx_encoder_t *omx_encoder_init() {
 void omx_encoder_destroy(struct omx_encoder_t *omx) {
 	OMX_ERRORTYPE error;
 
-	LOG_INFO("Destroying OMX JPEG encoder ...");
+	LOG_INFO("Destroying OMX encoder ...");
 
 	component_set_state(&omx->encoder, OMX_StateIdle);
 	_omx_encoder_clear_ports(omx);
@@ -131,7 +138,7 @@ void omx_encoder_destroy(struct omx_encoder_t *omx) {
 
 	if (omx->i_encoder) {
 		if ((error = OMX_FreeHandle(omx->encoder)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't free OMX.broadcom.image_encode");
+			LOG_ERROR_OMX(error, "Can't free OMX.broadcom.image_encode");
 		}
 	}
 
@@ -148,7 +155,7 @@ void omx_encoder_destroy(struct omx_encoder_t *omx) {
 	free(omx);
 }
 
-int omx_encoder_prepare_live(struct omx_encoder_t *omx, struct device_t *dev, const unsigned quality) {
+int omx_encoder_prepare(struct omx_encoder_t *omx, struct device_t *dev, unsigned quality) {
 	if (component_set_state(&omx->encoder, OMX_StateIdle) < 0) {
 		return -1;
 	}
@@ -167,16 +174,21 @@ int omx_encoder_prepare_live(struct omx_encoder_t *omx, struct device_t *dev, co
 	return 0;
 }
 
-int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev, const unsigned index) {
+int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev, unsigned index) {
+#	define HW_BUFFER(_next)	dev->run->hw_buffers[index]._next
+#	define IN(_next)		omx->input_buffer->_next
+#	define OUT(_next)		omx->output_buffer->_next
+
 	OMX_ERRORTYPE error;
-	bool loaded = false;
+	size_t slice_size = (IN(nAllocLen) < HW_BUFFER(used) ? IN(nAllocLen) : HW_BUFFER(used));
+	size_t pos = 0;
 
 	if ((error = OMX_FillThisBuffer(omx->encoder, omx->output_buffer)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Failed to request filling of the output buffer on encoder");
+		LOG_ERROR_OMX(error, "Failed to request filling of the output buffer on encoder");
 		return -1;
 	}
 
-	dev->run->pictures[index].size = 0;
+	dev->run->pictures[index]->used = 0;
 	omx->output_available = false;
 	omx->input_required = true;
 
@@ -188,50 +200,52 @@ int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev,
 		if (omx->output_available) {
 			omx->output_available = false;
 
-			memcpy(
-				dev->run->pictures[index].data + dev->run->pictures[index].size,
-				omx->output_buffer->pBuffer,
-				omx->output_buffer->nFilledLen
-			);
-			assert(dev->run->pictures[index].size + omx->output_buffer->nFilledLen <= dev->run->max_picture_size);
-			dev->run->pictures[index].size += omx->output_buffer->nFilledLen;
+			picture_append_data(dev->run->pictures[index], OUT(pBuffer) + OUT(nOffset), OUT(nFilledLen));
 
-			if (omx->output_buffer->nFlags & OMX_BUFFERFLAG_ENDOFFRAME) {
-				omx->output_buffer->nFlags = 0;
+			if (OUT(nFlags) & OMX_BUFFERFLAG_ENDOFFRAME) {
+				OUT(nFlags) = 0;
 				break;
 			}
 
 			if ((error = OMX_FillThisBuffer(omx->encoder, omx->output_buffer)) != OMX_ErrorNone) {
-				LOG_OMX_ERROR(error, "Failed to request filling of the output buffer on encoder");
+				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 (loaded) {
+
+			if (pos == HW_BUFFER(used)) {
 				continue;
 			}
-			loaded = true;
 
-			memcpy(omx->input_buffer->pBuffer, dev->run->hw_buffers[index].start, dev->run->hw_buffers[index].length);
-			omx->input_buffer->nOffset = 0;
-			omx->input_buffer->nFilledLen = dev->run->hw_buffers[index].length;
+			memcpy(IN(pBuffer), HW_BUFFER(data) + pos, slice_size);
+			IN(nOffset) = 0;
+			IN(nFilledLen) = slice_size;
+
+			pos += slice_size;
+
+			if (pos + slice_size > HW_BUFFER(used)) {
+				slice_size = HW_BUFFER(used) - pos;
+			}
 
 			if ((error = OMX_EmptyThisBuffer(omx->encoder, omx->input_buffer)) != OMX_ErrorNone) {
-				LOG_OMX_ERROR(error, "Failed to request emptying of the input buffer on encoder");
+				LOG_ERROR_OMX(error, "Failed to request emptying of the input buffer on encoder");
 				return -1;
 			}
 		}
 
 		vcos_semaphore_wait(&omx->handler_lock);
 	}
+
+#	undef OUT
+#	undef IN
+#	undef HW_BUFFER
 	return 0;
 }
 
 static int _omx_init_component(struct omx_encoder_t *omx) {
-	// http://home.nouwen.name/RaspberryPi/documentation/ilcomponents/image_encode.html
-
 	OMX_ERRORTYPE error;
 
 	OMX_CALLBACKTYPE callbacks;
@@ -242,7 +256,7 @@ static int _omx_init_component(struct omx_encoder_t *omx) {
 
 	LOG_DEBUG("Initializing OMX.broadcom.image_encode ...");
 	if ((error = OMX_GetHandle(&omx->encoder, "OMX.broadcom.image_encode", omx, &callbacks)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't initialize OMX.broadcom.image_encode");
+		LOG_ERROR_OMX(error, "Can't initialize OMX.broadcom.image_encode");
 		return -1;
 	}
 	omx->i_encoder = true;
@@ -259,13 +273,13 @@ static int _omx_init_disable_ports(struct omx_encoder_t *omx) {
 
 	OMX_INIT_STRUCTURE(ports);
 	if ((error = OMX_GetParameter(omx->encoder, OMX_IndexParamImageInit, &ports)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't OMX_GetParameter(OMX_IndexParamImageInit)");
+		LOG_ERROR_OMX(error, "Can't OMX_GetParameter(OMX_IndexParamImageInit)");
 		return -1;
 	}
 
 	for (unsigned index = 0; index < 4; ++index) {
 		if ((error = OMX_GetParameter(omx->encoder, types[index], &ports)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't OMX_GetParameter(types[%u])", index);
+			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) {
@@ -283,7 +297,7 @@ static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev) {
 
 	LOG_DEBUG("Setting up OMX JPEG input port ...");
 
-	if (component_get_portdef(&omx->encoder, &portdef, INPUT_PORT) < 0) {
+	if (component_get_portdef(&omx->encoder, &portdef, _INPUT_PORT) < 0) {
 		LOG_ERROR("... first");
 		return -1;
 	}
@@ -291,51 +305,60 @@ static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev) {
 	portdef.format.image.nFrameWidth = dev->run->width;
 	portdef.format.image.nFrameHeight = dev->run->height;
 	portdef.format.image.nStride = 0;
-#	define ALIGN(_x, _y) (((_x) + ((_y) - 1)) & ~((_y) - 1))
-	portdef.format.image.nSliceHeight = ALIGN(dev->run->height, 16);
-#	undef ALIGN
+#	define ALIGN_HEIGHT(_x, _y) (((_x) + ((_y) - 1)) & ~((_y) - 1))
+	portdef.format.image.nSliceHeight = ALIGN_HEIGHT(dev->run->height, 16);
+#	undef ALIGN_HEIGHT
 	portdef.format.image.bFlagErrorConcealment = OMX_FALSE;
 	portdef.format.image.eCompressionFormat = OMX_IMAGE_CodingUnused;
-	portdef.nBufferSize = dev->run->max_picture_size;
+	portdef.nBufferSize = picture_get_generous_size(dev->run->width, dev->run->height);
+
+#	define MAP_FORMAT(_v4l2_format, _omx_format) \
+		case _v4l2_format: { portdef.format.image.eColorFormat = _omx_format; break; }
 
 	switch (dev->run->format) {
 		// https://www.fourcc.org/yuv.php
 		// Also see comments inside OMX_IVCommon.h
-		case V4L2_PIX_FMT_YUYV: portdef.format.image.eColorFormat = OMX_COLOR_FormatYCbYCr; break;
-		case V4L2_PIX_FMT_UYVY: portdef.format.image.eColorFormat = OMX_COLOR_FormatCbYCrY; break;
-		case V4L2_PIX_FMT_RGB565: portdef.format.image.eColorFormat = OMX_COLOR_Format16bitRGB565; break;
-		// TODO: Check RGB565 + OMX. I don't have any USB devices which supports it.
-		default: assert(0 && "Unsupported input format for OMX JPEG compressor");
+		MAP_FORMAT(V4L2_PIX_FMT_YUYV, OMX_COLOR_FormatYCbYCr);
+		MAP_FORMAT(V4L2_PIX_FMT_UYVY, OMX_COLOR_FormatCbYCrY);
+		MAP_FORMAT(V4L2_PIX_FMT_RGB565, OMX_COLOR_Format16bitRGB565);
+		MAP_FORMAT(V4L2_PIX_FMT_RGB24, OMX_COLOR_Format24bitRGB888);
+		// TODO: найти устройство с RGB565 и протестить его.
+		// FIXME: RGB24 не работает нормально, нижняя половина экрана зеленая.
+		// FIXME: Китайский EasyCap тоже не работает, мусор на экране.
+		// Вероятно обе проблемы вызваны некорректной реализацией OMX на пае.
+		default: assert(0 && "Unsupported input format for OMX encoder");
 	}
 
+#	undef MAP_FORMAT
+
 	if (component_set_portdef(&omx->encoder, &portdef) < 0) {
 		return -1;
 	}
 
-	if (component_get_portdef(&omx->encoder, &portdef, INPUT_PORT) < 0) {
+	if (component_get_portdef(&omx->encoder, &portdef, _INPUT_PORT) < 0) {
 		LOG_ERROR("... second");
 		return -1;
 	}
 
-	if (component_enable_port(&omx->encoder, INPUT_PORT) < 0) {
+	if (component_enable_port(&omx->encoder, _INPUT_PORT) < 0) {
 		return -1;
 	}
 	omx->i_input_port_enabled = true;
 
-	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->input_buffer, INPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't allocate OMX JPEG input buffer");
+	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->input_buffer, _INPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
+		LOG_ERROR_OMX(error, "Can't allocate OMX JPEG input buffer");
 		return -1;
 	}
 	return 0;
 }
 
-static int _omx_setup_output(struct omx_encoder_t *omx, const unsigned quality) {
+static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality) {
 	OMX_ERRORTYPE error;
 	OMX_PARAM_PORTDEFINITIONTYPE portdef;
 
 	LOG_DEBUG("Setting up OMX JPEG output port ...");
 
-	if (component_get_portdef(&omx->encoder, &portdef, OUTPUT_PORT) < 0) {
+	if (component_get_portdef(&omx->encoder, &portdef, _OUTPUT_PORT) < 0) {
 		LOG_ERROR("... first");
 		return -1;
 	}
@@ -348,7 +371,7 @@ static int _omx_setup_output(struct omx_encoder_t *omx, const unsigned quality)
 		return -1;
 	}
 
-	if (component_get_portdef(&omx->encoder, &portdef, OUTPUT_PORT) < 0) {
+	if (component_get_portdef(&omx->encoder, &portdef, _OUTPUT_PORT) < 0) {
 		LOG_ERROR("... second");
 		return -1;
 	}
@@ -360,7 +383,7 @@ static int _omx_setup_output(struct omx_encoder_t *omx, const unsigned quality)
 		exif.bEnabled = OMX_FALSE;
 
 		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamBrcmDisableEXIF, &exif)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't disable EXIF on OMX JPEG");
+			LOG_ERROR_OMX(error, "Can't disable EXIF on OMX JPEG");
 			return -1;
 		}
 	}
@@ -369,11 +392,11 @@ static int _omx_setup_output(struct omx_encoder_t *omx, const unsigned quality)
 		OMX_PARAM_IJGSCALINGTYPE ijg;
 
 		OMX_INIT_STRUCTURE(ijg);
-		ijg.nPortIndex = OUTPUT_PORT;
+		ijg.nPortIndex = _OUTPUT_PORT;
 		ijg.bEnabled = OMX_TRUE;
 
 		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamBrcmEnableIJGTableScaling, &ijg)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't set OMX JPEG IJG settings");
+			LOG_ERROR_OMX(error, "Can't set OMX JPEG IJG settings");
 			return -1;
 		}
 	}
@@ -382,22 +405,22 @@ static int _omx_setup_output(struct omx_encoder_t *omx, const unsigned quality)
 		OMX_IMAGE_PARAM_QFACTORTYPE qfactor;
 
 		OMX_INIT_STRUCTURE(qfactor);
-		qfactor.nPortIndex = OUTPUT_PORT;
+		qfactor.nPortIndex = _OUTPUT_PORT;
 		qfactor.nQFactor = quality;
 
 		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamQFactor, &qfactor)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't set OMX JPEG quality");
+			LOG_ERROR_OMX(error, "Can't set OMX JPEG quality");
 			return -1;
 		}
 	}
 
-	if (component_enable_port(&omx->encoder, OUTPUT_PORT) < 0) {
+	if (component_enable_port(&omx->encoder, _OUTPUT_PORT) < 0) {
 		return -1;
 	}
 	omx->i_output_port_enabled = true;
 
-	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->output_buffer, OUTPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't allocate OMX JPEG output buffer");
+	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->output_buffer, _OUTPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
+		LOG_ERROR_OMX(error, "Can't allocate OMX JPEG output buffer");
 		return -1;
 	}
 	return 0;
@@ -408,24 +431,24 @@ static int _omx_encoder_clear_ports(struct omx_encoder_t *omx) {
 	int retcode = 0;
 
 	if (omx->i_output_port_enabled) {
-		retcode -= component_disable_port(&omx->encoder, OUTPUT_PORT);
+		retcode -= component_disable_port(&omx->encoder, _OUTPUT_PORT);
 		omx->i_output_port_enabled = false;
 	}
 	if (omx->i_input_port_enabled) {
-		retcode -= component_disable_port(&omx->encoder, INPUT_PORT);
+		retcode -= component_disable_port(&omx->encoder, _INPUT_PORT);
 		omx->i_input_port_enabled = false;
 	}
 
 	if (omx->input_buffer) {
-		if ((error = OMX_FreeBuffer(omx->encoder, INPUT_PORT, omx->input_buffer)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't free OMX JPEG input buffer");
+		if ((error = OMX_FreeBuffer(omx->encoder, _INPUT_PORT, omx->input_buffer)) != OMX_ErrorNone) {
+			LOG_ERROR_OMX(error, "Can't free OMX JPEG input buffer");
 			// retcode -= 1;
 		}
 		omx->input_buffer = NULL;
 	}
 	if (omx->output_buffer) {
-		if ((error = OMX_FreeBuffer(omx->encoder, OUTPUT_PORT, omx->output_buffer)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't free OMX JPEG output buffer");
+		if ((error = OMX_FreeBuffer(omx->encoder, _OUTPUT_PORT, omx->output_buffer)) != OMX_ErrorNone) {
+			LOG_ERROR_OMX(error, "Can't free OMX JPEG output buffer");
 			// retcode -= 1;
 		}
 		omx->output_buffer = NULL;
@@ -433,7 +456,8 @@ static int _omx_encoder_clear_ports(struct omx_encoder_t *omx) {
 	return retcode;
 }
 
-static OMX_ERRORTYPE _omx_event_handler(UNUSED OMX_HANDLETYPE encoder,
+static OMX_ERRORTYPE _omx_event_handler(
+	UNUSED OMX_HANDLETYPE encoder,
 	OMX_PTR v_omx, OMX_EVENTTYPE event, OMX_U32 data1,
 	UNUSED OMX_U32 data2, UNUSED OMX_PTR event_data) {
 
@@ -442,14 +466,15 @@ static OMX_ERRORTYPE _omx_event_handler(UNUSED OMX_HANDLETYPE encoder,
 	struct omx_encoder_t *omx = (struct omx_encoder_t *)v_omx;
 
 	if (event == OMX_EventError) {
-		LOG_OMX_ERROR((OMX_ERRORTYPE)data1, "OMX error event received");
+		LOG_ERROR_OMX((OMX_ERRORTYPE)data1, "OMX error event received");
 		omx->failed = true;
 		vcos_semaphore_post(&omx->handler_lock);
 	}
 	return OMX_ErrorNone;
 }
 
-static OMX_ERRORTYPE _omx_input_required_handler(UNUSED OMX_HANDLETYPE encoder,
+static OMX_ERRORTYPE _omx_input_required_handler(
+	UNUSED OMX_HANDLETYPE encoder,
 	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer) {
 
 	// Called by OMX when the encoder component requires
@@ -462,7 +487,8 @@ static OMX_ERRORTYPE _omx_input_required_handler(UNUSED OMX_HANDLETYPE encoder,
 	return OMX_ErrorNone;
 }
 
-static OMX_ERRORTYPE _omx_output_available_handler(UNUSED OMX_HANDLETYPE encoder,
+static OMX_ERRORTYPE _omx_output_available_handler(
+	UNUSED OMX_HANDLETYPE encoder,
 	OMX_PTR v_omx, UNUSED OMX_BUFFERHEADERTYPE *buffer) {
 
 	// Called by OMX when the encoder component has filled

src/encoders/omx/encoder.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -26,10 +27,11 @@
 #include <IL/OMX_Component.h>
 #include <interface/vcos/vcos_semaphore.h>
 
-#include "../device.h"
+#include "../../device.h"
 
-
-#define OMX_MAX_ENCODERS 3
+#ifndef OMX_MAX_ENCODERS
+#	define OMX_MAX_ENCODERS 3 // Raspberry Pi limitation
+#endif
 
 
 struct omx_encoder_t {
@@ -48,8 +50,8 @@ struct omx_encoder_t {
 };
 
 
-struct omx_encoder_t *omx_encoder_init();
+struct omx_encoder_t *omx_encoder_init(void);
 void omx_encoder_destroy(struct omx_encoder_t *omx);
 
-int omx_encoder_prepare_live(struct omx_encoder_t *omx, struct device_t *dev, const unsigned quality);
-int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev, const unsigned index);
+int omx_encoder_prepare(struct omx_encoder_t *omx, struct device_t *dev, unsigned quality);
+int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev, unsigned index);

src/encoders/omx/formatters.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,14 +20,15 @@
 *****************************************************************************/
 
 
+#include "formatters.h"
+
 #include <stdio.h>
 #include <assert.h>
 
 #include <IL/OMX_IVCommon.h>
 #include <IL/OMX_Core.h>
 
-#include "../tools.h"
-#include "formatters.h"
+#include "../../tools.h"
 
 
 #define CASE_TO_STRING(_value) \
@@ -38,7 +40,7 @@
 		assert(0 && _buf); \
 	}
 
-const char *omx_error_to_string(const OMX_ERRORTYPE error) {
+const char *omx_error_to_string(OMX_ERRORTYPE error) {
 	switch (error) {
 		CASE_TO_STRING(OMX_ErrorNone);
 		CASE_TO_STRING(OMX_ErrorInsufficientResources);
@@ -69,7 +71,7 @@ const char *omx_error_to_string(const OMX_ERRORTYPE error) {
 	}
 }
 
-const char *omx_state_to_string(const OMX_STATETYPE state) {
+const char *omx_state_to_string(OMX_STATETYPE state) {
 	switch (state) {
 		CASE_TO_STRING(OMX_StateLoaded);
 		CASE_TO_STRING(OMX_StateIdle);

src/encoders/omx/formatters.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -21,25 +22,17 @@
 
 #pragma once
 
-#include <stdio.h>
-
-#include <sys/syscall.h>
-
 #include <IL/OMX_IVCommon.h>
 #include <IL/OMX_Core.h>
 #include <IL/OMX_Image.h>
 
-#include "../logging.h"
-#include "../tools.h"
+#include "../../logging.h"
 
 
-#define LOG_OMX_ERROR(_error, _msg, ...) { \
-		LOGGING_LOCK; \
-		printf("-- ERROR [%.03Lf tid=%ld] -- " _msg ": %s\n", get_now_monotonic(), \
-			syscall(SYS_gettid), ##__VA_ARGS__, omx_error_to_string(_error)); \
-		LOGGING_UNLOCK; \
+#define LOG_ERROR_OMX(_error, _msg, ...) { \
+		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, omx_error_to_string(_error)); \
 	}
 
 
-const char *omx_error_to_string(const OMX_ERRORTYPE error);
-const char *omx_state_to_string(const OMX_STATETYPE state);
+const char *omx_error_to_string(OMX_ERRORTYPE error);
+const char *omx_state_to_string(OMX_STATETYPE state);

src/gpio.h

@@ -0,0 +1,92 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdlib.h>
+
+#include <wiringPi.h>
+
+#include "logging.h"
+
+
+int gpio_pin_prog_running;
+int gpio_pin_stream_online;
+int gpio_pin_has_http_clients;
+int gpio_pin_workers_busy_at;
+
+
+#define GPIO_INIT { \
+		gpio_pin_prog_running = -1; \
+		gpio_pin_stream_online = -1; \
+		gpio_pin_has_http_clients = -1; \
+		gpio_pin_workers_busy_at = -1; \
+	}
+
+#define GPIO_INIT_PIN(_role, _offset) { \
+		if (gpio_pin_##_role >= 0) { \
+			pinMode(gpio_pin_##_role + _offset, OUTPUT); \
+			digitalWrite(gpio_pin_##_role + _offset, LOW); \
+			if (_offset == 0) { \
+				LOG_INFO("GPIO: Using pin %d as %s", gpio_pin_##_role, #_role); \
+			} else { \
+				LOG_INFO("GPIO: Using pin %d+%d as %s", gpio_pin_##_role, _offset, #_role); \
+			} \
+		} \
+	}
+
+#define GPIO_INIT_PINOUT { \
+		if ( \
+			gpio_pin_prog_running >= 0 \
+			|| gpio_pin_stream_online >= 0 \
+			|| gpio_pin_has_http_clients >= 0 \
+			|| gpio_pin_workers_busy_at >= 0 \
+		) { \
+			LOG_INFO("GPIO: Using wiringPi"); \
+			if (wiringPiSetupGpio() < 0) { \
+				LOG_PERROR("GPIO: Can't initialize wiringPi"); \
+				exit(1); \
+			} else { \
+				GPIO_INIT_PIN(prog_running, 0); \
+				GPIO_INIT_PIN(stream_online, 0); \
+				GPIO_INIT_PIN(has_http_clients, 0); \
+				GPIO_INIT_PIN(workers_busy_at, 0); \
+			} \
+		} \
+	}
+
+#define GPIO_SET_STATE(_role, _offset, _state) { \
+		if (gpio_pin_##_role >= 0) { \
+			if (_offset == 0) { \
+				LOG_DEBUG("GPIO: Writing %d to pin %d (%s)", _state, gpio_pin_##_role, #_role); \
+			} else { \
+				LOG_DEBUG("GPIO: Writing %d to pin %d+%d (%s)", _state, gpio_pin_##_role, _offset, #_role); \
+			} \
+			digitalWrite(gpio_pin_##_role + _offset, _state); \
+		} \
+	}
+
+#define GPIO_SET_LOW(_role)		GPIO_SET_STATE(_role, 0, LOW)
+#define GPIO_SET_HIGH(_role)	GPIO_SET_STATE(_role, 0, HIGH)
+
+#define GPIO_SET_LOW_AT(_role, _offset)		GPIO_SET_STATE(_role, _offset, LOW)
+#define GPIO_SET_HIGH_AT(_role, _offset)	GPIO_SET_STATE(_role, _offset, HIGH)

src/http/base64.c

@@ -0,0 +1,71 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "base64.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "../tools.h"
+
+
+static const char _ENCODING_TABLE[] = {
+	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
+	'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
+	'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+	'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
+	'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
+	'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
+	'w', 'x', 'y', 'z', '0', '1', '2', '3',
+	'4', '5', '6', '7', '8', '9', '+', '/',
+};
+
+static const unsigned _MOD_TABLE[] = {0, 2, 1};
+
+
+char *base64_encode(const unsigned char *str) {
+	size_t str_len = strlen((const char *)str);
+	size_t encoded_size = 4 * ((str_len + 2) / 3) + 1; // +1 for '\0'
+	char *encoded;
+
+	A_CALLOC(encoded, encoded_size);
+
+	for (unsigned str_index = 0, encoded_index = 0; str_index < str_len;) {
+		unsigned octet_a = (str_index < str_len ? (unsigned char)str[str_index++] : 0);
+		unsigned octet_b = (str_index < str_len ? (unsigned char)str[str_index++] : 0);
+		unsigned octet_c = (str_index < str_len ? (unsigned char)str[str_index++] : 0);
+
+		unsigned triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
+
+		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 3 * 6) & 0x3F];
+		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 2 * 6) & 0x3F];
+		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 1 * 6) & 0x3F];
+		encoded[encoded_index++] = _ENCODING_TABLE[(triple >> 0 * 6) & 0x3F];
+	}
+
+	for (unsigned index = 0; index < _MOD_TABLE[str_len % 3]; index++) {
+		encoded[encoded_size - 2 - index] = '=';
+	}
+
+	encoded[encoded_size - 1] = '\0';
+	return encoded;
+}

src/http/base64.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -21,7 +22,5 @@
 
 #pragma once
 
-#include "../device.h"
 
-
-void jpeg_encoder_compress_buffer(struct device_t *dev, const unsigned index, const unsigned quality);
+char *base64_encode(const unsigned char *str);

src/http/blank.c

@@ -0,0 +1,161 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "blank.h"
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <setjmp.h>
+
+#include <jpeglib.h>
+
+#include "../tools.h"
+#include "../logging.h"
+#include "../picture.h"
+
+#include "data/blank_jpeg.h"
+
+
+struct _jpeg_error_manager_t {
+	struct jpeg_error_mgr	mgr; // Default manager
+	jmp_buf					jmp;
+};
+
+
+static struct picture_t *_init_internal(void);
+static struct picture_t *_init_external(const char *path);
+
+static int _jpeg_read_geometry(FILE *fp, unsigned *width, unsigned *height);
+static void _jpeg_error_handler(j_common_ptr jpeg);
+
+
+struct picture_t *blank_picture_init(const char *path) {
+	struct picture_t *blank = NULL;
+
+	if (path) {
+		blank = _init_external(path);
+	}
+
+	if (blank) {
+		LOG_INFO("Using external blank placeholder: %s", path);
+	} else {
+		blank = _init_internal();
+		LOG_INFO("Using internal blank placeholder");
+	}
+	return blank;
+}
+
+static struct picture_t *_init_internal(void) {
+	struct picture_t *blank;
+
+	blank = picture_init();
+	picture_set_data(blank, BLANK_JPEG_DATA, ARRAY_LEN(BLANK_JPEG_DATA));
+	blank->width = BLANK_JPEG_WIDTH;
+	blank->height = BLANK_JPEG_HEIGHT;
+	return blank;
+}
+
+static struct picture_t *_init_external(const char *path) {
+	FILE *fp = NULL;
+	struct picture_t *blank;
+
+	blank = picture_init();
+
+	if ((fp = fopen(path, "rb")) == NULL) {
+		LOG_PERROR("Can't open blank placeholder '%s'", path);
+		goto error;
+	}
+
+	if (_jpeg_read_geometry(fp, &blank->width, &blank->height) < 0) {
+		goto error;
+	}
+
+	if (fseek(fp, 0, SEEK_SET) < 0) {
+		LOG_PERROR("Can't seek to begin of the blank placeholder");
+		goto error;
+	}
+
+#	define CHUNK_SIZE (100 * 1024)
+	while (true) {
+		if (blank->used + CHUNK_SIZE >= blank->allocated) {
+			picture_realloc_data(blank, blank->used + CHUNK_SIZE * 2);
+		}
+
+		size_t readed = fread(blank->data + blank->used, 1, CHUNK_SIZE, fp);
+		blank->used += readed;
+
+		if (readed < CHUNK_SIZE) {
+			if (feof(fp)) {
+				goto ok;
+			} else {
+				LOG_PERROR("Can't read blank placeholder");
+				goto error;
+			}
+		}
+	}
+#	undef CHUNK_SIZE
+
+	error:
+		picture_destroy(blank);
+		blank = NULL;
+
+	ok:
+		if (fp) {
+			fclose(fp);
+		}
+
+	return blank;
+}
+
+static int _jpeg_read_geometry(FILE *fp, unsigned *width, unsigned *height) {
+	struct jpeg_decompress_struct jpeg;
+	struct _jpeg_error_manager_t jpeg_error;
+
+	jpeg_create_decompress(&jpeg);
+
+	// https://stackoverflow.com/questions/19857766/error-handling-in-libjpeg
+	jpeg.err = jpeg_std_error((struct jpeg_error_mgr *)&jpeg_error);
+	jpeg_error.mgr.error_exit = _jpeg_error_handler;
+	if (setjmp(jpeg_error.jmp) < 0) {
+		jpeg_destroy_decompress(&jpeg);
+		return -1;
+	}
+
+	jpeg_stdio_src(&jpeg, fp);
+	jpeg_read_header(&jpeg, TRUE);
+	jpeg_start_decompress(&jpeg);
+
+	*width = jpeg.output_width;
+	*height = jpeg.output_height;
+
+	jpeg_destroy_decompress(&jpeg);
+	return 0;
+}
+
+static void _jpeg_error_handler(j_common_ptr jpeg) {
+	struct _jpeg_error_manager_t *jpeg_error = (struct _jpeg_error_manager_t *)jpeg->err;
+	char msg[JMSG_LENGTH_MAX];
+
+	(*jpeg_error->mgr.format_message)(jpeg, msg);
+	LOG_ERROR("Invalid blank placeholder: %s", msg);
+	longjmp(jpeg_error->jmp, -1);
+}

src/http/blank.h

@@ -0,0 +1,28 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include "../picture.h"
+
+
+struct picture_t *blank_picture_init(const char *path);

src/http/data/blank_jpeg.h

@@ -0,0 +1,723 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+
+const unsigned BLANK_JPEG_WIDTH = 640;
+const unsigned BLANK_JPEG_HEIGHT = 480;
+
+const unsigned char BLANK_JPEG_DATA[] = {
+	0xFF, 0xD8, 0xFF, 0xE1, 0x09, 0x50, 0x68, 0x74, 0x74, 0x70, 0x3A, 0x2F, 0x2F, 0x6E, 0x73, 0x2E, 0x61, 0x64, 0x6F, 0x62,
+	0x65, 0x2E, 0x63, 0x6F, 0x6D, 0x2F, 0x78, 0x61, 0x70, 0x2F, 0x31, 0x2E, 0x30, 0x2F, 0x00, 0x3C, 0x3F, 0x78, 0x70, 0x61,
+	0x63, 0x6B, 0x65, 0x74, 0x20, 0x62, 0x65, 0x67, 0x69, 0x6E, 0x3D, 0x22, 0xEF, 0xBB, 0xBF, 0x22, 0x20, 0x69, 0x64, 0x3D,
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+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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+	0xD6, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD1, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD2, 0xAF, 0xFC, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
+	0xD3, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x07, 0xFF, 0xD4, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD5, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD6, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD7, 0xAF, 0xFC, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
+	0xD0, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x07, 0xFF, 0xD1, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD2, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD3, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD4, 0xAF, 0xFC, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
+	0xD5, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x07, 0xFF, 0xD6, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD7, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD1, 0xAF, 0xFC, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
+	0xD2, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x07, 0xFF, 0xD9,
+};

src/http/data/index.html

@@ -54,6 +54,6 @@
 	</ul>
 	<br>
 	<hr>
-	<a href="https://github.com/pi-kvm/ustreamer">Sources &amp; docs</a>
+	<a href="https://github.com/pikvm/ustreamer">Sources &amp; docs</a>
 </body>
 </html>

src/http/data/index_html.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -21,10 +22,10 @@
 
 #pragma once
 
-#include "../config.h"
+#include "../../config.h"
 
 
-const char *HTML_INDEX_PAGE = " \
+const char HTML_INDEX_PAGE[] = " \
 	<!DOCTYPE html> \
 	\
 	<html> \
@@ -81,7 +82,7 @@ const char *HTML_INDEX_PAGE = " \
 		</ul> \
 		<br> \
 		<hr> \
-		<a href=\"https://github.com/pi-kvm/ustreamer\">Sources &amp; docs</a> \
+		<a href=\"https://github.com/pikvm/ustreamer\">Sources &amp; docs</a> \
 	</body> \
 	</html> \
 ";

src/http/mime.c

@@ -0,0 +1,73 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "mime.h"
+
+#include <string.h>
+
+#include <event2/util.h>
+
+#include "../tools.h"
+
+
+static const struct {
+	const char *ext;
+	const char *mime;
+} _MIME_TYPES[] = {
+	{"html",	"text/html"},
+	{"htm",		"text/html"},
+	{"css",		"text/css"},
+	{"js",		"text/javascript"},
+	{"txt",		"text/plain"},
+	{"jpg",		"image/jpeg"},
+	{"jpeg",	"image/jpeg"},
+	{"png",		"image/png"},
+	{"gif",		"image/gif"},
+	{"ico",		"image/x-icon"},
+	{"bmp",		"image/bmp"},
+	{"svg",		"image/svg+xml"},
+	{"swf",		"application/x-shockwave-flash"},
+	{"cab",		"application/x-shockwave-flash"},
+	{"jar",		"application/java-archive"},
+	{"json",	"application/json"},
+};
+
+
+const char *guess_mime_type(const char *path) {
+	char *dot;
+	char *ext;
+
+	dot = strchr(path, '.');
+	if (dot == NULL || strchr(dot, '/') != NULL) {
+		goto misc;
+	}
+
+	ext = dot + 1;
+	for (unsigned index = 0; index < ARRAY_LEN(_MIME_TYPES); ++index) {
+		if (!evutil_ascii_strcasecmp(ext, _MIME_TYPES[index].ext)) {
+			return _MIME_TYPES[index].mime;
+		}
+	}
+
+	misc:
+		return "application/misc";
+}

src/http/mime.h

@@ -0,0 +1,26 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+
+const char *guess_mime_type(const char *str);

src/http/path.c

@@ -0,0 +1,184 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "path.h"
+
+#ifdef TEST_HTTP_PATH
+#	include <stdio.h>
+#	include <stdlib.h>
+#endif
+#include <string.h>
+
+#include "../tools.h"
+
+
+char *simplify_request_path(const char *str) {
+	// Based on Lighttpd sources:
+	//   - https://github.com/lighttpd/lighttpd1.4/blob/b31e7840d5403bc640579135b7004793b9ccd6c0/src/buffer.c#L840
+	//   - https://github.com/lighttpd/lighttpd1.4/blob/77c01f981725512653c01cde5ca74c11633dfec4/src/t/test_buffer.c
+
+	char ch; // Current character
+	char pre1; // The one before
+	char pre2; // The one before that
+	char *simplified;
+	char *start;
+	char *out;
+	char *slash;
+
+	A_CALLOC(simplified, strlen(str) + 1);
+
+	if (str[0] == '\0') {
+		simplified[0] = '\0';
+		return simplified;
+	}
+
+	start = simplified;
+	out = simplified;
+	slash = simplified;
+
+	// Skip leading spaces
+	for (; *str == ' '; ++str);
+
+	if (*str == '.') {
+		if (str[1] == '/' || str[1] == '\0') {
+			++str;
+		} else if (str[1] == '.' && (str[2] == '/' || str[2] == '\0')) {
+			str += 2;
+		}
+	}
+
+	pre1 = '\0';
+	ch = *(str++);
+
+	while (ch != '\0') {
+		pre2 = pre1;
+		pre1 = ch;
+
+		// Possibly: out == str - need to read first
+		ch = *str;
+		*out = pre1;
+
+		out++;
+		str++;
+		// (out <= str) still true; also now (slash < out)
+
+		if (ch == '/' || ch == '\0') {
+			size_t toklen = out - slash;
+
+			if (toklen == 3 && pre2 == '.' && pre1 == '.' && *slash == '/') {
+				// "/../" or ("/.." at end of string)
+				out = slash;
+				// If there is something before "/..", there is at least one
+				// component, which needs to be removed
+				if (out > start) {
+					--out;
+					for (; out > start && *out != '/'; --out);
+				}
+
+				// Don't kill trailing '/' at end of path
+				if (ch == '\0') {
+					++out;
+				}
+				// slash < out before, so out_new <= slash + 1 <= out_before <= str
+			} else if (toklen == 1 || (pre2 == '/' && pre1 == '.')) {
+				// "//" or "/./" or (("/" or "/.") at end of string)
+				out = slash;
+				// Don't kill trailing '/' at end of path
+				if (ch == '\0') {
+					++out;
+				}
+				// Slash < out before, so out_new <= slash + 1 <= out_before <= str
+			}
+
+			slash = out;
+		}
+	}
+
+	*out = '\0';
+	return simplified;
+}
+
+#ifdef TEST_HTTP_PATH
+
+int test_simplify_request_path(const char *sample, const char *expected) {
+	char *result = simplify_request_path(sample);
+	int retval = -!!strcmp(result, expected);
+
+	printf("Testing '%s' -> '%s' ... ", sample, expected);
+	if (retval == 0) {
+		printf("ok\n");
+	} else {
+		printf("FAILED; got '%s'\n", result);
+	}
+	free(result);
+	return retval;
+}
+
+int main(void) {
+	int retval = 0;
+
+#	define TEST_SIMPLIFY_REQUEST_PATH(_sample, _expected) { \
+			retval += test_simplify_request_path(_sample, _expected); \
+		}
+
+	TEST_SIMPLIFY_REQUEST_PATH("", "");
+	TEST_SIMPLIFY_REQUEST_PATH("   ", "");
+	TEST_SIMPLIFY_REQUEST_PATH("/", "/");
+	TEST_SIMPLIFY_REQUEST_PATH("//", "/");
+	TEST_SIMPLIFY_REQUEST_PATH("abc", "abc");
+	TEST_SIMPLIFY_REQUEST_PATH("abc//", "abc/");
+	TEST_SIMPLIFY_REQUEST_PATH("abc/./xyz", "abc/xyz");
+	TEST_SIMPLIFY_REQUEST_PATH("abc/.//xyz", "abc/xyz");
+	TEST_SIMPLIFY_REQUEST_PATH("abc/../xyz", "/xyz");
+	TEST_SIMPLIFY_REQUEST_PATH("/abc/./xyz", "/abc/xyz");
+	TEST_SIMPLIFY_REQUEST_PATH("/abc//./xyz", "/abc/xyz");
+	TEST_SIMPLIFY_REQUEST_PATH("/abc/../xyz", "/xyz");
+	TEST_SIMPLIFY_REQUEST_PATH("abc/../xyz/.", "/xyz/");
+	TEST_SIMPLIFY_REQUEST_PATH("/abc/../xyz/.", "/xyz/");
+	TEST_SIMPLIFY_REQUEST_PATH("abc/./xyz/..", "abc/");
+	TEST_SIMPLIFY_REQUEST_PATH("/abc/./xyz/..", "/abc/");
+	TEST_SIMPLIFY_REQUEST_PATH(".", "");
+	TEST_SIMPLIFY_REQUEST_PATH("..", "");
+	TEST_SIMPLIFY_REQUEST_PATH("...", "...");
+	TEST_SIMPLIFY_REQUEST_PATH("....", "....");
+	TEST_SIMPLIFY_REQUEST_PATH(".../", ".../");
+	TEST_SIMPLIFY_REQUEST_PATH("./xyz/..", "/");
+	TEST_SIMPLIFY_REQUEST_PATH(".//xyz/..", "/");
+	TEST_SIMPLIFY_REQUEST_PATH("/./xyz/..", "/");
+	TEST_SIMPLIFY_REQUEST_PATH(".././xyz/..", "/");
+	TEST_SIMPLIFY_REQUEST_PATH("/.././xyz/..", "/");
+	TEST_SIMPLIFY_REQUEST_PATH("/.././xyz/..", "/");
+	TEST_SIMPLIFY_REQUEST_PATH("../../../etc/passwd", "/etc/passwd");
+	TEST_SIMPLIFY_REQUEST_PATH("/../../../etc/passwd", "/etc/passwd");
+	TEST_SIMPLIFY_REQUEST_PATH("   ../../../etc/passwd", "/etc/passwd");
+	TEST_SIMPLIFY_REQUEST_PATH("   /../../../etc/passwd", "/etc/passwd");
+	TEST_SIMPLIFY_REQUEST_PATH("   /foo/bar/../../../etc/passwd", "/etc/passwd");
+
+#	undef TEST_SIMPLIFY_REQUEST_PATH
+
+	if (retval < 0) {
+		printf("===== TEST FAILED =====\n");
+	}
+	return retval;
+}
+
+#endif

src/http/path.h

@@ -0,0 +1,26 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+
+char *simplify_request_path(const char *str);

src/http/server.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,17 +20,19 @@
 *****************************************************************************/
 
 
+#include "server.h"
+
+#include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <stdatomic.h>
 #include <string.h>
-#include <strings.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <assert.h>
 
-#include <sys/socket.h>
-#include <sys/un.h>
 #include <sys/stat.h>
+#include <sys/time.h>
 
 #include <event2/event.h>
 #include <event2/thread.h>
@@ -44,19 +47,30 @@
 #	error Required libevent-pthreads support
 #endif
 
-#include "tools.h"
-#include "logging.h"
-#include "stream.h"
-#include "http.h"
+#include "../tools.h"
+#include "../threading.h"
+#include "../logging.h"
+#include "../picture.h"
+#include "../encoder.h"
+#include "../stream.h"
+#ifdef WITH_GPIO
+#	include "../gpio.h"
+#endif
+
+#include "unix.h"
+#include "uri.h"
+#include "base64.h"
+#include "mime.h"
+#include "static.h"
+#include "blank.h"
 
 #include "data/index_html.h"
-#include "data/blank_jpeg.h"
 
 
-static bool _http_get_param_true(struct evkeyvalq *params, const char *key);
-static char *_http_get_param_uri(struct evkeyvalq *params, const char *key);
+static int _http_preprocess_request(struct evhttp_request *request, struct http_server_t *server);
 
-static void _http_callback_root(struct evhttp_request *request, void *arg);
+static void _http_callback_root(struct evhttp_request *request, void *v_server);
+static void _http_callback_static(struct evhttp_request *request, void *v_server);
 static void _http_callback_state(struct evhttp_request *request, void *v_server);
 static void _http_callback_snapshot(struct evhttp_request *request, void *v_server);
 
@@ -65,9 +79,9 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 static void _http_callback_stream_error(struct bufferevent *buf_event, short what, void *v_ctx);
 
 static void _http_exposed_refresh(int fd, short event, void *v_server);
-static void _http_queue_send_stream(struct http_server_t *server, const bool stream_updated, const bool picture_updated);
+static void _http_queue_send_stream(struct http_server_t *server, bool stream_updated, bool picture_updated);
 
-static bool _expose_new_picture(struct http_server_t *server);
+static bool _expose_new_picture_unsafe(struct http_server_t *server);
 static bool _expose_blank_picture(struct http_server_t *server);
 
 
@@ -77,6 +91,7 @@ struct http_server_t *http_server_init(struct stream_t *stream) {
 	struct exposed_t *exposed;
 
 	A_CALLOC(exposed, 1);
+	exposed->picture = picture_init();
 
 	A_CALLOC(run, 1);
 	run->stream = stream;
@@ -86,21 +101,18 @@ struct http_server_t *http_server_init(struct stream_t *stream) {
 	A_CALLOC(server, 1);
 	server->host = "127.0.0.1";
 	server->port = 8080;
+	server->unix_path = "";
+	server->user = "";
+	server->passwd = "";
+	server->static_path = "";
 	server->timeout = 10;
+	server->last_as_blank = -1;
 	server->run = run;
 
-	_expose_blank_picture(server);
-
 	assert(!evthread_use_pthreads());
 	assert((run->base = event_base_new()));
 	assert((run->http = evhttp_new(run->base)));
 	evhttp_set_allowed_methods(run->http, EVHTTP_REQ_GET|EVHTTP_REQ_HEAD);
-
-	assert(!evhttp_set_cb(run->http, "/", _http_callback_root, NULL));
-	assert(!evhttp_set_cb(run->http, "/state", _http_callback_state, (void *)server));
-	assert(!evhttp_set_cb(run->http, "/snapshot", _http_callback_snapshot, (void *)server));
-	assert(!evhttp_set_cb(run->http, "/stream", _http_callback_stream, (void *)server));
-
 	return server;
 }
 
@@ -115,70 +127,103 @@ void http_server_destroy(struct http_server_t *server) {
 		close(server->run->unix_fd);
 	}
 	event_base_free(server->run->base);
-	libevent_global_shutdown();
 
-	free(server->run->exposed->picture.data);
+#	if LIBEVENT_VERSION_NUMBER >= 0x02010100
+	libevent_global_shutdown();
+#	endif
+
+	for (struct stream_client_t *client = server->run->stream_clients; client != NULL;) {
+		struct stream_client_t *next = client->next;
+
+		free(client->key);
+		free(client);
+		client = next;
+	}
+
+	if (server->run->auth_token) {
+		free(server->run->auth_token);
+	}
+
+	if (server->run->blank) {
+		picture_destroy(server->run->blank);
+	}
+
+	picture_destroy(server->run->exposed->picture);
 	free(server->run->exposed);
 	free(server->run);
 	free(server);
 }
 
 int http_server_listen(struct http_server_t *server) {
-	struct timeval refresh_interval;
-
-	refresh_interval.tv_sec = 0;
-	if (server->run->stream->dev->desired_fps > 0) {
-		refresh_interval.tv_usec = 1000000 / (server->run->stream->dev->desired_fps * 2);
-	} else {
-		refresh_interval.tv_usec = 16000; // ~60fps
+	{
+		if (server->static_path[0] != '\0') {
+			evhttp_set_gencb(server->run->http, _http_callback_static, (void *)server);
+		} else {
+			assert(!evhttp_set_cb(server->run->http, "/", _http_callback_root, (void *)server));
+		}
+		assert(!evhttp_set_cb(server->run->http, "/state", _http_callback_state, (void *)server));
+		assert(!evhttp_set_cb(server->run->http, "/snapshot", _http_callback_snapshot, (void *)server));
+		assert(!evhttp_set_cb(server->run->http, "/stream", _http_callback_stream, (void *)server));
 	}
-	assert((server->run->refresh = event_new(server->run->base, -1, EV_PERSIST, _http_exposed_refresh, server)));
-	assert(!event_add(server->run->refresh, &refresh_interval));
 
 	server->run->drop_same_frames_blank = max_u(server->drop_same_frames, server->run->drop_same_frames_blank);
+	server->run->blank = blank_picture_init(server->blank_path);
+
+#	define EXPOSED(_next) server->run->exposed->_next
+	// See _expose_blank_picture()
+	picture_copy(server->run->blank, EXPOSED(picture));
+	EXPOSED(expose_begin_time) = get_now_monotonic();
+	EXPOSED(expose_cmp_time) = EXPOSED(expose_begin_time);
+	EXPOSED(expose_end_time) = EXPOSED(expose_begin_time);
+#	undef EXPOSED
+
+	{
+		struct timeval refresh_interval;
+
+		refresh_interval.tv_sec = 0;
+		if (server->run->stream->dev->desired_fps > 0) {
+			refresh_interval.tv_usec = 1000000 / (server->run->stream->dev->desired_fps * 2);
+		} else {
+			refresh_interval.tv_usec = 16000; // ~60fps
+		}
+
+		assert((server->run->refresh = event_new(server->run->base, -1, EV_PERSIST, _http_exposed_refresh, server)));
+		assert(!event_add(server->run->refresh, &refresh_interval));
+	}
+
+	if (server->slowdown) {
+		stream_switch_slowdown(server->run->stream, true);
+	}
 
 	evhttp_set_timeout(server->run->http, server->timeout);
 
-	if (server->unix_path) {
-		struct sockaddr_un unix_addr;
-		int unix_fd_flags;
+	if (server->user[0] != '\0') {
+		char *raw_token;
+		char *encoded_token;
 
+		A_CALLOC(raw_token, strlen(server->user) + strlen(server->passwd) + 2);
+		sprintf(raw_token, "%s:%s", server->user, server->passwd);
+		encoded_token = base64_encode((unsigned char *)raw_token);
+		free(raw_token);
+
+		A_CALLOC(server->run->auth_token, strlen(encoded_token) + 16);
+		sprintf(server->run->auth_token, "Basic %s", encoded_token);
+		free(encoded_token);
+
+		LOG_INFO("Using HTTP basic auth");
+	}
+
+	if (server->unix_path[0] != '\0') {
 		LOG_DEBUG("Binding HTTP to UNIX socket '%s' ...", server->unix_path);
-
-		assert((server->run->unix_fd = socket(AF_UNIX, SOCK_STREAM, 0)));
-		assert((unix_fd_flags = fcntl(server->run->unix_fd, F_GETFL)) >= 0);
-		unix_fd_flags |= O_NONBLOCK;
-		assert(fcntl(server->run->unix_fd, F_SETFL, unix_fd_flags) >= 0);
-
-		strncpy(unix_addr.sun_path, server->unix_path, 107);
-		unix_addr.sun_path[107] = '\0';
-		unix_addr.sun_family = AF_UNIX;
-
-		if (server->unix_rm && unlink(server->unix_path) < 0) {
-			if (errno != ENOENT) {
-				LOG_PERROR("Can't remove old UNIX socket '%s'", server->unix_path);
-				return -1;
-			}
-		}
-		if (bind(server->run->unix_fd, (struct sockaddr *)&unix_addr, sizeof(struct sockaddr_un)) < 0) {
-			LOG_PERROR("Can't bind HTTP to UNIX socket '%s'", server->unix_path);
+		if ((server->run->unix_fd = evhttp_my_bind_unix(
+			server->run->http,
+			server->unix_path,
+			server->unix_rm,
+			server->unix_mode)) < 0
+		) {
 			return -1;
 		}
-		if (server->unix_mode && chmod(server->unix_path, server->unix_mode) < 0) {
-			LOG_PERROR("Can't set permissions %o to UNIX socket '%s'", server->unix_mode, server->unix_path);
-			return -1;
-		}
-		if (listen(server->run->unix_fd, 128) < 0) {
-			LOG_PERROR("Can't listen UNIX socket '%s'", server->unix_path);
-			return -1;
-		}
-		if (evhttp_accept_socket(server->run->http, server->run->unix_fd) < 0) {
-			LOG_PERROR("Can't evhttp_accept_socket() UNIX socket '%s'", server->unix_path);
-			return -1;
-		}
-
 		LOG_INFO("Listening HTTP on UNIX socket '%s'", server->unix_path);
-
 	} else {
 		LOG_DEBUG("Binding HTTP to [%s]:%u ...", server->host, server->port);
 		if (evhttp_bind_socket(server->run->http, server->host, server->port) < 0) {
@@ -201,70 +246,158 @@ void http_server_loop_break(struct http_server_t *server) {
 	event_base_loopbreak(server->run->base);
 }
 
-
-static bool _http_get_param_true(struct evkeyvalq *params, const char *key) {
-	const char *value_str;
-
-	if ((value_str = evhttp_find_header(params, key)) != NULL) {
-		if (!strcasecmp(value_str, "true") || !strcasecmp(value_str, "yes") || value_str[0] == '1') {
-			return true;
-		}
-	}
-	return false;
-}
-
-static char *_http_get_param_uri(struct evkeyvalq *params, const char *key) {
-	const char *value_str;
-
-	if ((value_str = evhttp_find_header(params, key)) != NULL) {
-		return evhttp_encode_uri(value_str);
-	}
-	return NULL;
-}
-
 #define ADD_HEADER(_key, _value) \
 	assert(!evhttp_add_header(evhttp_request_get_output_headers(request), _key, _value))
 
-#define PROCESS_HEAD_REQUEST { \
-		if (evhttp_request_get_command(request) == EVHTTP_REQ_HEAD) { \
-			evhttp_send_reply(request, HTTP_OK, "OK", NULL); \
+static int _http_preprocess_request(struct evhttp_request *request, struct http_server_t *server) {
+	if (server->run->auth_token) {
+		const char *token = evhttp_find_header(evhttp_request_get_input_headers(request), "Authorization");
+
+		if (token == NULL || strcmp(token, server->run->auth_token) != 0) {
+			ADD_HEADER("WWW-Authenticate", "Basic realm=\"Restricted area\"");
+			evhttp_send_reply(request, 401, "Unauthorized", NULL);
+			return -1;
+		}
+	}
+
+	if (evhttp_request_get_command(request) == EVHTTP_REQ_HEAD) { \
+		evhttp_send_reply(request, HTTP_OK, "OK", NULL); \
+		return -1;
+	}
+
+	return 0;
+}
+
+#define PREPROCESS_REQUEST { \
+		if (_http_preprocess_request(request, server) < 0) { \
 			return; \
 		} \
 	}
 
-static void _http_callback_root(struct evhttp_request *request, UNUSED void *arg) {
+static void _http_callback_root(struct evhttp_request *request, void *v_server) {
+	struct http_server_t *server = (struct http_server_t *)v_server;
 	struct evbuffer *buf;
 
-	PROCESS_HEAD_REQUEST;
+	PREPROCESS_REQUEST;
 
 	assert((buf = evbuffer_new()));
-	assert(evbuffer_add_printf(buf, HTML_INDEX_PAGE));
+	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) {
+	struct http_server_t *server = (struct http_server_t *)v_server;
+	struct evbuffer *buf = NULL;
+	struct evhttp_uri *uri = NULL;
+	char *uri_path;
+	char *decoded_path = NULL;
+	char *static_path = NULL;
+	int fd = -1;
+	struct stat st;
+
+	PREPROCESS_REQUEST;
+
+	if ((uri = evhttp_uri_parse(evhttp_request_get_uri(request))) == NULL) {
+		goto bad_request;
+	}
+	if ((uri_path = (char *)evhttp_uri_get_path(uri)) == NULL) {
+		uri_path = "/";
+	}
+
+	if ((decoded_path = evhttp_uridecode(uri_path, 0, NULL)) == NULL) {
+		goto bad_request;
+	}
+
+	assert((buf = evbuffer_new()));
+
+	if ((static_path = find_static_file_path(server->static_path, decoded_path)) == NULL) {
+		goto not_found;
+	}
+
+	if ((fd = open(static_path, O_RDONLY)) < 0) {
+		LOG_PERROR("HTTP: Can't open found static file %s", static_path);
+		goto not_found;
+	}
+
+	if (fstat(fd, &st) < 0) {
+		LOG_PERROR("HTTP: Can't stat() found static file %s", static_path);
+		goto not_found;
+	}
+
+	if (evbuffer_add_file(buf, fd, 0, st.st_size) < 0) {
+		LOG_ERROR("HTTP: Can't serve static file %s", static_path);
+		goto not_found;
+	}
+	ADD_HEADER("Content-Type", guess_mime_type(static_path));
+	evhttp_send_reply(request, HTTP_OK, "OK", buf);
+	goto cleanup;
+
+	bad_request:
+		evhttp_send_error(request, HTTP_BADREQUEST, NULL);
+		goto cleanup;
+
+	not_found:
+		evhttp_send_error(request, HTTP_NOTFOUND, NULL);
+		goto cleanup;
+
+	cleanup:
+		if (fd >= 0) {
+			close(fd);
+		}
+		if (static_path) {
+			free(static_path);
+		}
+		if (buf) {
+			evbuffer_free(buf);
+		}
+		if (decoded_path) {
+			free(decoded_path);
+		}
+		if (uri) {
+			evhttp_uri_free(uri);
+		}
+}
+
 static void _http_callback_state(struct evhttp_request *request, void *v_server) {
 	struct http_server_t *server = (struct http_server_t *)v_server;
 	struct evbuffer *buf;
+	enum encoder_type_t encoder_run_type;
+	unsigned encoder_run_quality;
 
-	PROCESS_HEAD_REQUEST;
+	PREPROCESS_REQUEST;
+
+#	define ENCODER(_next) server->run->stream->encoder->_next
+#	define EXPOSED(_next) server->run->exposed->_next
+
+	A_MUTEX_LOCK(&ENCODER(run->mutex));
+	encoder_run_type = ENCODER(run->type);
+	encoder_run_quality = ENCODER(run->quality);
+	A_MUTEX_UNLOCK(&ENCODER(run->mutex));
 
 	assert((buf = evbuffer_new()));
+
 	assert(evbuffer_add_printf(buf,
-		"{\"ok\": true, \"result\":"
-		" {\"source\": {\"resolution\": {\"width\": %u, \"height\": %u},"
-		" \"online\": %s, \"quality\": %u, \"desired_fps\": %u, \"captured_fps\": %u},"
+		"{\"ok\": true, \"result\": {"
+		" \"encoder\": {\"type\": \"%s\", \"quality\": %u},"
+		" \"source\": {\"resolution\": {\"width\": %u, \"height\": %u},"
+		" \"online\": %s, \"desired_fps\": %u, \"captured_fps\": %u},"
 		" \"stream\": {\"queued_fps\": %u, \"clients\": %u, \"clients_stat\": {",
-		(server->fake_width ? server->fake_width : server->run->exposed->width),
-		(server->fake_height ? server->fake_height : server->run->exposed->height),
-		bool_to_string(server->run->exposed->online),
-		server->run->stream->encoder->quality,
+		encoder_type_to_string(encoder_run_type),
+		encoder_run_quality,
+		(server->fake_width ? server->fake_width : EXPOSED(picture->width)),
+		(server->fake_height ? server->fake_height : EXPOSED(picture->height)),
+		bool_to_string(EXPOSED(online)),
 		server->run->stream->dev->desired_fps,
-		server->run->exposed->captured_fps,
-		server->run->exposed->queued_fps,
+		EXPOSED(captured_fps),
+		EXPOSED(queued_fps),
 		server->run->stream_clients_count
 	));
+
+#	undef EXPOSED
+#	undef ENCODER
+
 	for (struct stream_client_t * client = server->run->stream_clients; client != NULL; client = client->next) {
 		assert(evbuffer_add_printf(buf,
 			"\"%s\": {\"fps\": %u, \"extra_headers\": %s, \"advance_headers\": %s, \"dual_final_frames\": %s}%s",
@@ -276,6 +409,7 @@ static void _http_callback_state(struct evhttp_request *request, void *v_server)
 			(client->next ? ", " : "")
 		));
 	}
+
 	assert(evbuffer_add_printf(buf, "}}}}"));
 
 	ADD_HEADER("Content-Type", "application/json");
@@ -288,32 +422,37 @@ static void _http_callback_snapshot(struct evhttp_request *request, void *v_serv
 	struct evbuffer *buf;
 	char header_buf[64];
 
-	PROCESS_HEAD_REQUEST;
+	PREPROCESS_REQUEST;
 
 #	define EXPOSED(_next) server->run->exposed->_next
 
 	assert((buf = evbuffer_new()));
-	assert(!evbuffer_add(buf, (const void *)EXPOSED(picture.data), EXPOSED(picture.size)));
+	assert(!evbuffer_add(buf, (const void *)EXPOSED(picture->data), EXPOSED(picture->used)));
 
 	ADD_HEADER("Access-Control-Allow-Origin:", "*");
-	ADD_HEADER("Cache-Control", "no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0");
+	ADD_HEADER("Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate, pre-check=0, post-check=0, max-age=0");
 	ADD_HEADER("Pragma", "no-cache");
 	ADD_HEADER("Expires", "Mon, 3 Jan 2000 12:34:56 GMT");
 
-#	define ADD_TIME_HEADER(_key, _value) \
-		{ sprintf(header_buf, "%.06Lf", _value); ADD_HEADER(_key, header_buf); }
+#	define ADD_TIME_HEADER(_key, _value) { \
+			sprintf(header_buf, "%.06Lf", _value); \
+			ADD_HEADER(_key, header_buf); \
+		}
 
-#	define ADD_UNSIGNED_HEADER(_key, _value) \
-		{ sprintf(header_buf, "%u", _value); ADD_HEADER(_key, header_buf); }
+#	define ADD_UNSIGNED_HEADER(_key, _value) { \
+			sprintf(header_buf, "%u", _value); \
+			ADD_HEADER(_key, header_buf); \
+		}
 
 	ADD_TIME_HEADER("X-Timestamp", get_now_real());
 
 	ADD_HEADER("X-UStreamer-Online",					bool_to_string(EXPOSED(online)));
-	ADD_UNSIGNED_HEADER("X-UStreamer-Width",			EXPOSED(width));
-	ADD_UNSIGNED_HEADER("X-UStreamer-Height",			EXPOSED(height));
-	ADD_TIME_HEADER("X-UStreamer-Grab-Time",			EXPOSED(picture.grab_time));
-	ADD_TIME_HEADER("X-UStreamer-Encode-Begin-Time",	EXPOSED(picture.encode_begin_time));
-	ADD_TIME_HEADER("X-UStreamer-Encode-End-Time",		EXPOSED(picture.encode_end_time));
+	ADD_UNSIGNED_HEADER("X-UStreamer-Dropped",			EXPOSED(dropped));
+	ADD_UNSIGNED_HEADER("X-UStreamer-Width",			EXPOSED(picture->width));
+	ADD_UNSIGNED_HEADER("X-UStreamer-Height",			EXPOSED(picture->height));
+	ADD_TIME_HEADER("X-UStreamer-Grab-Time",			EXPOSED(picture->grab_time));
+	ADD_TIME_HEADER("X-UStreamer-Encode-Begin-Time",	EXPOSED(picture->encode_begin_time));
+	ADD_TIME_HEADER("X-UStreamer-Encode-End-Time",		EXPOSED(picture->encode_end_time));
 	ADD_TIME_HEADER("X-UStreamer-Expose-Begin-Time",	EXPOSED(expose_begin_time));
 	ADD_TIME_HEADER("X-UStreamer-Expose-Cmp-Time",		EXPOSED(expose_cmp_time));
 	ADD_TIME_HEADER("X-UStreamer-Expose-End-Time",		EXPOSED(expose_end_time));
@@ -321,13 +460,12 @@ static void _http_callback_snapshot(struct evhttp_request *request, void *v_serv
 
 #	undef ADD_UNSUGNED_HEADER
 #	undef ADD_TIME_HEADER
+#	undef EXPOSED
 
 	ADD_HEADER("Content-Type", "image/jpeg");
 
 	evhttp_send_reply(request, HTTP_OK, "OK", buf);
 	evbuffer_free(buf);
-
-#	undef EXPOSED
 }
 
 #undef ADD_HEADER
@@ -348,10 +486,10 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 	unsigned short client_port;
 	uuid_t uuid;
 
-	PROCESS_HEAD_REQUEST;
+	PREPROCESS_REQUEST;
 
 	conn = evhttp_request_get_connection(request);
-	if (conn != NULL) {
+	if (conn) {
 		A_CALLOC(client, 1);
 		client->server = server;
 		client->request = request;
@@ -359,10 +497,10 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 		client->need_first_frame = true;
 
 		evhttp_parse_query(evhttp_request_get_uri(request), &params);
-		client->key = _http_get_param_uri(&params, "key");
-		client->extra_headers = _http_get_param_true(&params, "extra_headers");
-		client->advance_headers = _http_get_param_true(&params, "advance_headers");
-		client->dual_final_frames = _http_get_param_true(&params, "dual_final_frames");
+		client->key = uri_get_string(&params, "key");
+		client->extra_headers = uri_get_true(&params, "extra_headers");
+		client->advance_headers = uri_get_true(&params, "advance_headers");
+		client->dual_final_frames = uri_get_true(&params, "dual_final_frames");
 		evhttp_clear_headers(&params);
 
 		uuid_generate(uuid);
@@ -379,17 +517,19 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 		}
 		server->run->stream_clients_count += 1;
 
+		if (server->run->stream_clients_count == 1) {
+			if (server->slowdown) {
+				stream_switch_slowdown(server->run->stream, false);
+			}
+
+#			ifdef WITH_GPIO
+			GPIO_SET_HIGH(has_http_clients);
+#			endif
+		}
+
 		evhttp_connection_get_peer(conn, &client_addr, &client_port);
-		LOG_INFO(
-			"HTTP: Registered the new stream client: [%s]:%u; id=%s;"
-			" advance_headers=%s; dual_final_frames=%s; clients now: %u",
-			client_addr,
-			client_port,
-			client->id,
-			bool_to_string(client->advance_headers),
-			bool_to_string(client->dual_final_frames),
-			server->run->stream_clients_count
-		);
+		LOG_INFO("HTTP: Registered the new stream client: [%s]:%u, id=%s; clients now: %u",
+			client_addr, client_port, client->id, server->run->stream_clients_count);
 
 		buf_event = evhttp_connection_get_bufferevent(conn);
 		bufferevent_setcb(buf_event, NULL, NULL, _http_callback_stream_error, (void *)client);
@@ -399,7 +539,7 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 	}
 }
 
-#undef PROCESS_HEAD_REQUEST
+#undef PREPROCESS_REQUEST
 
 static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_client) {
 #	define BOUNDARY "boundarydonotcross"
@@ -439,14 +579,14 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 	// по тем же причинам, по которым у нас нет Content-Length.
 
 #	define ADD_ADVANCE_HEADERS \
-		{ assert(evbuffer_add_printf(buf, \
-		"Content-Type: image/jpeg" RN "X-Timestamp: %.06Lf" RN RN, get_now_real())); }
+		assert(evbuffer_add_printf(buf, \
+			"Content-Type: image/jpeg" RN "X-Timestamp: %.06Lf" RN RN, get_now_real()))
 
 	if (client->need_initial) {
 		assert(evbuffer_add_printf(buf,
 			"HTTP/1.0 200 OK" RN
 			"Access-Control-Allow-Origin: *" RN
-			"Cache-Control: no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0" RN
+			"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
@@ -470,15 +610,17 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 	if (!client->advance_headers) {
 		assert(evbuffer_add_printf(buf,
 			"Content-Type: image/jpeg" RN
-			"Content-Length: %lu" RN
+			"Content-Length: %zu" RN
 			"X-Timestamp: %.06Lf" RN
 			"%s",
-			EXPOSED(picture.size) * sizeof(*EXPOSED(picture.data)),
-			get_now_real(), (client->extra_headers ? "" : RN)
+			EXPOSED(picture->used),
+			get_now_real(),
+			(client->extra_headers ? "" : RN)
 		));
 		if (client->extra_headers) {
 			assert(evbuffer_add_printf(buf,
 				"X-UStreamer-Online: %s" RN
+				"X-UStreamer-Dropped: %u" RN
 				"X-UStreamer-Width: %u" RN
 				"X-UStreamer-Height: %u" RN
 				"X-UStreamer-Client-FPS: %u" RN
@@ -491,12 +633,13 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 				"X-UStreamer-Send-Time: %.06Lf" RN
 				RN,
 				bool_to_string(EXPOSED(online)),
-				EXPOSED(width),
-				EXPOSED(height),
+				EXPOSED(dropped),
+				EXPOSED(picture->width),
+				EXPOSED(picture->height),
 				client->fps,
-				EXPOSED(picture.grab_time),
-				EXPOSED(picture.encode_begin_time),
-				EXPOSED(picture.encode_end_time),
+				EXPOSED(picture->grab_time),
+				EXPOSED(picture->encode_begin_time),
+				EXPOSED(picture->encode_end_time),
 				EXPOSED(expose_begin_time),
 				EXPOSED(expose_cmp_time),
 				EXPOSED(expose_end_time),
@@ -505,10 +648,7 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 		}
 	}
 
-	assert(!evbuffer_add(buf,
-		(void *)EXPOSED(picture.data),
-		EXPOSED(picture.size) * sizeof(*EXPOSED(picture.data))
-	));
+	assert(!evbuffer_add(buf, (void *)EXPOSED(picture->data), EXPOSED(picture->used)));
 	assert(evbuffer_add_printf(buf, RN "--" BOUNDARY RN));
 
 	if (client->advance_headers) {
@@ -533,22 +673,32 @@ static void _http_callback_stream_error(UNUSED struct bufferevent *buf_event, UN
 	char *client_addr = "???";
 	unsigned short client_port = 0;
 
-	client->server->run->stream_clients_count -= 1;
+#	define RUN(_next) client->server->run->_next
+
+	RUN(stream_clients_count) -= 1;
+
+	if (RUN(stream_clients_count) <= 0) {
+		if (client->server->slowdown) {
+			stream_switch_slowdown(RUN(stream), true);
+		}
+
+#		ifdef WITH_GPIO
+		GPIO_SET_LOW(has_http_clients);
+#		endif
+	}
 
 	conn = evhttp_request_get_connection(client->request);
-	if (conn != NULL) {
+	if (conn) {
 		evhttp_connection_get_peer(conn, &client_addr, &client_port);
 	}
-	LOG_INFO(
-		"HTTP: Disconnected the stream client: [%s]:%u; clients now: %u",
-		client_addr, client_port, client->server->run->stream_clients_count
-	);
-	if (conn != NULL) {
+	LOG_INFO("HTTP: Disconnected the stream client: [%s]:%u; clients now: %u",
+		client_addr, client_port, RUN(stream_clients_count));
+	if (conn) {
 		evhttp_connection_free(conn);
 	}
 
 	if (client->prev == NULL) {
-		client->server->run->stream_clients = client->next;
+		RUN(stream_clients) = client->next;
 	} else {
 		client->prev->next = client->next;
 	}
@@ -557,9 +707,11 @@ static void _http_callback_stream_error(UNUSED struct bufferevent *buf_event, UN
 	}
 	free(client->key);
 	free(client);
+
+#	undef RUN
 }
 
-static void _http_queue_send_stream(struct http_server_t *server, const bool stream_updated, const bool picture_updated) {
+static void _http_queue_send_stream(struct http_server_t *server, bool stream_updated, bool picture_updated) {
 	struct evhttp_connection *conn;
 	struct bufferevent *buf_event;
 	long long now;
@@ -569,7 +721,7 @@ static void _http_queue_send_stream(struct http_server_t *server, const bool str
 
 	for (struct stream_client_t *client = server->run->stream_clients; client != NULL; client = client->next) {
 		conn = evhttp_request_get_connection(client->request);
-		if (conn != NULL) {
+		if (conn) {
 			// Фикс для бага WebKit. При включенной опции дропа одинаковых фреймов,
 			// WebKit отрисовывает последний фрейм в серии с некоторой задержкой,
 			// и нужно послать два фрейма, чтобы серия была вовремя завершена.
@@ -613,14 +765,16 @@ static void _http_exposed_refresh(UNUSED int fd, UNUSED short what, void *v_serv
 	bool stream_updated = false;
 	bool picture_updated = false;
 
-#	define UNLOCK_STREAM \
-		{ server->run->stream->updated = false; A_PTHREAD_M_UNLOCK(&server->run->stream->mutex); }
+#	define UNLOCK_STREAM { \
+			atomic_store(&server->run->stream->updated, false); \
+			A_MUTEX_UNLOCK(&server->run->stream->mutex); \
+		}
 
-	if (server->run->stream->updated) {
+	if (atomic_load(&server->run->stream->updated)) {
 		LOG_DEBUG("Refreshing HTTP exposed ...");
-		A_PTHREAD_M_LOCK(&server->run->stream->mutex);
-		if (server->run->stream->picture.size > 0) { // If online
-			picture_updated = _expose_new_picture(server);
+		A_MUTEX_LOCK(&server->run->stream->mutex);
+		if (server->run->stream->online) {
+			picture_updated = _expose_new_picture_unsafe(server);
 			UNLOCK_STREAM;
 		} else {
 			UNLOCK_STREAM;
@@ -638,71 +792,45 @@ static void _http_exposed_refresh(UNUSED int fd, UNUSED short what, void *v_serv
 	_http_queue_send_stream(server, stream_updated, picture_updated);
 }
 
-static bool _expose_new_picture(struct http_server_t *server) {
-#	define STREAM(_next) server->run->stream->_next
+static bool _expose_new_picture_unsafe(struct http_server_t *server) {
 #	define EXPOSED(_next) server->run->exposed->_next
+#	define STREAM(_next) server->run->stream->_next
 
-	assert(STREAM(picture.size) > 0);
 	EXPOSED(captured_fps) = STREAM(captured_fps);
 	EXPOSED(expose_begin_time) = get_now_monotonic();
 
-#	define MEM_STREAM_TO_EXPOSED \
-		EXPOSED(picture.data), STREAM(picture.data), \
-		STREAM(picture.size) * sizeof(*STREAM(picture.data))
-
 	if (server->drop_same_frames) {
 		if (
 			EXPOSED(online)
 			&& EXPOSED(dropped) < server->drop_same_frames
-			&& EXPOSED(picture.size) == STREAM(picture.size)
-			&& !memcmp(MEM_STREAM_TO_EXPOSED)
+			&& picture_compare(EXPOSED(picture), STREAM(picture))
 		) {
 			EXPOSED(expose_cmp_time) = get_now_monotonic();
 			EXPOSED(expose_end_time) = EXPOSED(expose_cmp_time);
-			LOG_VERBOSE(
-				"HTTP: dropped same frame number %u; comparsion time = %.06Lf",
-				EXPOSED(dropped), EXPOSED(expose_cmp_time) - EXPOSED(expose_begin_time)
-			);
+			LOG_VERBOSE("HTTP: Dropped same frame number %u; cmp_time=%.06Lf",
+				EXPOSED(dropped), EXPOSED(expose_cmp_time) - EXPOSED(expose_begin_time));
 			EXPOSED(dropped) += 1;
 			return false; // Not updated
 		} else {
 			EXPOSED(expose_cmp_time) = get_now_monotonic();
-			LOG_VERBOSE(
-				"HTTP: passed same frame check (frames are differ); comparsion time = %.06Lf",
-				EXPOSED(expose_cmp_time) - EXPOSED(expose_begin_time)
-			);
+			LOG_VERBOSE("HTTP: Passed same frame check (frames are differ); cmp_time=%.06Lf",
+				EXPOSED(expose_cmp_time) - EXPOSED(expose_begin_time));
 		}
 	}
 
-	if (EXPOSED(picture.allocated) < STREAM(picture.allocated)) {
-		A_REALLOC(EXPOSED(picture.data), STREAM(picture.allocated));
-		EXPOSED(picture.allocated) = STREAM(picture.allocated);
-	}
+	picture_copy(STREAM(picture), EXPOSED(picture));
 
-	memcpy(MEM_STREAM_TO_EXPOSED);
+#	undef STREAM
 
-#	undef MEM_STREAM_TO_EXPOSED
-
-	EXPOSED(picture.size) = STREAM(picture.size);
-
-	EXPOSED(picture.grab_time) = STREAM(picture.grab_time);
-	EXPOSED(picture.encode_begin_time) = STREAM(picture.encode_begin_time);
-	EXPOSED(picture.encode_end_time) = STREAM(picture.encode_end_time);
-
-	EXPOSED(width) = STREAM(width);
-	EXPOSED(height) = STREAM(height);
 	EXPOSED(online) = true;
 	EXPOSED(dropped) = 0;
 	EXPOSED(expose_cmp_time) = EXPOSED(expose_begin_time);
 	EXPOSED(expose_end_time) = get_now_monotonic();
 
-	LOG_VERBOSE(
-		"HTTP: exposed new frame; full exposition time =  %.06Lf",
-		 EXPOSED(expose_end_time) - EXPOSED(expose_begin_time)
-	);
+	LOG_VERBOSE("HTTP: Exposed new frame; full exposition time = %.06Lf",
+		 EXPOSED(expose_end_time) - EXPOSED(expose_begin_time));
 
 #	undef EXPOSED
-#	undef STREAM
 	return true; // Updated
 }
 
@@ -712,38 +840,44 @@ static bool _expose_blank_picture(struct http_server_t *server) {
 	EXPOSED(expose_begin_time) = get_now_monotonic();
 	EXPOSED(expose_cmp_time) = EXPOSED(expose_begin_time);
 
-	if (EXPOSED(online) || EXPOSED(picture.size) == 0) {
-		if (EXPOSED(picture.allocated) < BLANK_JPG_SIZE) {
-			A_REALLOC(EXPOSED(picture.data), BLANK_JPG_SIZE);
-			EXPOSED(picture.allocated) = BLANK_JPG_SIZE;
+#	define EXPOSE_BLANK picture_copy(server->run->blank, EXPOSED(picture))
+
+	if (EXPOSED(online)) { // Если переходим из online в offline
+		if (server->last_as_blank < 0) { // Если last_as_blank выключено, просто покажем картинку
+			LOG_INFO("HTTP: Changed picture to BLANK");
+			EXPOSE_BLANK;
+		} else if (server->last_as_blank > 0) { // Если нужен таймер - запустим
+			LOG_INFO("HTTP: Freezing last alive frame for %d seconds", server->last_as_blank);
+			EXPOSED(last_as_blank_time) = get_now_monotonic();
+		} else { // last_as_blank == 0 - показываем последний фрейм вечно
+			LOG_INFO("HTTP: Freezing last alive frame forever");
 		}
-
-		memcpy(
-			EXPOSED(picture.data), BLANK_JPG_DATA,
-			BLANK_JPG_SIZE * sizeof(*EXPOSED(picture.data))
-		);
-
-		EXPOSED(picture.size) = BLANK_JPG_SIZE;
-
-		EXPOSED(picture.grab_time) = 0;
-		EXPOSED(picture.encode_begin_time) = 0;
-		EXPOSED(picture.encode_end_time) = 0;
-
-		EXPOSED(width) = BLANK_JPG_WIDTH;
-		EXPOSED(height) = BLANK_JPG_HEIGHT;
-		EXPOSED(captured_fps) = 0;
-		EXPOSED(online) = false;
 		goto updated;
 	}
 
+	if ( // Если уже оффлайн, включена фича last_as_blank с таймером и он запущен
+		server->last_as_blank > 0
+		&& EXPOSED(last_as_blank_time) > 0
+		&& EXPOSED(last_as_blank_time) + server->last_as_blank < EXPOSED(expose_begin_time)
+	) {
+		LOG_INFO("HTTP: Changed last alive frame to BLANK");
+		EXPOSE_BLANK;
+		EXPOSED(last_as_blank_time) = 0; // Останавливаем таймер
+		goto updated;
+	}
+
+#	undef EXPOSE_BLANK
+
 	if (EXPOSED(dropped) < server->run->drop_same_frames_blank) {
-		LOG_PERF("HTTP: dropped same frame (BLANK) number %u", EXPOSED(dropped));
+		LOG_PERF("HTTP: Dropped same frame (BLANK) number %u", EXPOSED(dropped));
 		EXPOSED(dropped) += 1;
 		EXPOSED(expose_end_time) = get_now_monotonic();
 		return false; // Not updated
 	}
 
 	updated:
+		EXPOSED(captured_fps) = 0;
+		EXPOSED(online) = false;
 		EXPOSED(dropped) = 0;
 		EXPOSED(expose_end_time) = get_now_monotonic();
 		return true; // Updated

src/http/server.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,6 +20,8 @@
 *****************************************************************************/
 
 
+#pragma once
+
 #include <stdbool.h>
 
 #include <sys/stat.h>
@@ -27,8 +30,8 @@
 #include <event2/http.h>
 #include <event2/util.h>
 
-#include "tools.h"
-#include "stream.h"
+#include "../picture.h"
+#include "../stream.h"
 
 
 struct stream_client_t {
@@ -53,9 +56,7 @@ struct stream_client_t {
 };
 
 struct exposed_t {
-	struct picture_t	picture;
-	unsigned			width;
-	unsigned			height;
+	struct picture_t	*picture;
 	unsigned			captured_fps;
 	unsigned			queued_fps;
 	bool				online;
@@ -63,17 +64,20 @@ struct exposed_t {
 	long double			expose_begin_time;
 	long double			expose_cmp_time;
 	long double			expose_end_time;
+	long double			last_as_blank_time;
 };
 
 struct http_server_runtime_t {
 	struct event_base		*base;
 	struct evhttp			*http;
 	evutil_socket_t			unix_fd;
+	char					*auth_token;
 	struct event			*refresh;
 	struct stream_t			*stream;
 	struct exposed_t		*exposed;
 	struct stream_client_t	*stream_clients;
 	unsigned				stream_clients_count;
+	struct picture_t		*blank;
 	unsigned				drop_same_frames_blank;
 };
 
@@ -83,10 +87,18 @@ struct http_server_t {
 	char		*unix_path;
 	bool		unix_rm;
 	mode_t		unix_mode;
+	unsigned	timeout;
+
+	char		*user;
+	char		*passwd;
+	char		*static_path;
+
+	char		*blank_path;
+	int			last_as_blank;
 	unsigned	drop_same_frames;
+	bool		slowdown;
 	unsigned	fake_width;
 	unsigned	fake_height;
-	unsigned	timeout;
 
 	struct http_server_runtime_t *run;
 };

src/http/static.c

@@ -0,0 +1,88 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "static.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+
+#include "../tools.h"
+// #include "../logging.h"
+
+#include "path.h"
+
+
+char *find_static_file_path(const char *root_path, const char *request_path) {
+	char *simplified_path;
+	char *path = NULL;
+	struct stat st;
+
+	simplified_path = simplify_request_path(request_path);
+	if (simplified_path[0] == '\0') {
+		goto error;
+	}
+
+	A_CALLOC(path, strlen(root_path) + strlen(simplified_path) + 32);
+	sprintf(path, "%s/%s", root_path, simplified_path);
+
+#	define LOAD_STAT { \
+			if (lstat(path, &st) < 0) { \
+				/* LOG_PERROR("Can't stat() file %s", path); */ \
+				goto error; \
+			} \
+		}
+
+	LOAD_STAT;
+	if (S_ISDIR(st.st_mode)) {
+		strcat(path, "/index.html");
+		LOAD_STAT;
+	}
+
+#	undef LOAD_STAT
+
+	if (!S_ISREG(st.st_mode)) {
+		// LOG_ERROR("Not a regulary file: %s", path);
+		goto error;
+	}
+
+	if (access(path, R_OK) < 0) {
+		// LOG_PERROR("Can't access() R_OK file %s", path);
+		goto error;
+	}
+
+	goto ok;
+
+	error:
+		if (path) {
+			free(path);
+		}
+		path = NULL;
+
+	ok:
+		free(simplified_path);
+
+	return path;
+}

src/http/static.h

@@ -0,0 +1,26 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+
+char *find_static_file_path(const char *root_path, const char *request_path);

src/http/unix.c

@@ -0,0 +1,85 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "unix.h"
+
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/stat.h>
+
+#include <event2/http.h>
+#include <event2/util.h>
+
+#include "../tools.h"
+#include "../logging.h"
+
+
+evutil_socket_t evhttp_my_bind_unix(struct evhttp *http, const char *path, bool rm, mode_t mode) {
+	evutil_socket_t fd = -1;
+	struct sockaddr_un addr;
+
+#	define MAX_SUN_PATH (sizeof(addr.sun_path) - 1)
+
+	if (strlen(path) > MAX_SUN_PATH) {
+		LOG_ERROR("UNIX socket path is too long; max=%zu", MAX_SUN_PATH);
+		return -1;
+	}
+
+	MEMSET_ZERO(addr);
+	strncpy(addr.sun_path, path, MAX_SUN_PATH);
+	addr.sun_family = AF_UNIX;
+
+#	undef MAX_SUN_PATH
+
+	assert((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0);
+	assert(!evutil_make_socket_nonblocking(fd));
+
+	if (rm && unlink(path) < 0) {
+		if (errno != ENOENT) {
+			LOG_PERROR("Can't remove old UNIX socket '%s'", path);
+			return -1;
+		}
+	}
+	if (bind(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0) {
+		LOG_PERROR("Can't bind HTTP to UNIX socket '%s'", path);
+		return -1;
+	}
+	if (mode && chmod(path, mode) < 0) {
+		LOG_PERROR("Can't set permissions %o to UNIX socket '%s'", mode, path);
+		return -1;
+	}
+	if (listen(fd, 128) < 0) {
+		LOG_PERROR("Can't listen UNIX socket '%s'", path);
+		return -1;
+	}
+	if (evhttp_accept_socket(http, fd) < 0) {
+		LOG_PERROR("Can't evhttp_accept_socket() UNIX socket '%s'", path);
+		return -1;
+	}
+	return fd;
+}

src/http/unix.h

@@ -0,0 +1,33 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdbool.h>
+
+#include <sys/stat.h>
+
+#include <event2/http.h>
+#include <event2/util.h>
+
+
+evutil_socket_t evhttp_my_bind_unix(struct evhttp *http, const char *path, bool rm, mode_t mode);

src/http/uri.c

@@ -0,0 +1,54 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "uri.h"
+
+#include <stdbool.h>
+
+#include <event2/http.h>
+#include <event2/util.h>
+#include <event2/keyvalq_struct.h>
+
+
+bool uri_get_true(struct evkeyvalq *params, const char *key) {
+	const char *value_str;
+
+	if ((value_str = evhttp_find_header(params, key)) != NULL) {
+		if (
+			value_str[0] == '1'
+			|| !evutil_ascii_strcasecmp(value_str, "true")
+			|| !evutil_ascii_strcasecmp(value_str, "yes")
+		) {
+			return true;
+		}
+	}
+	return false;
+}
+
+char *uri_get_string(struct evkeyvalq *params, const char *key) {
+	const char *value_str;
+
+	if ((value_str = evhttp_find_header(params, key)) != NULL) {
+		return evhttp_encode_uri(value_str);
+	}
+	return NULL;
+}

src/http/uri.h

@@ -0,0 +1,32 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdbool.h>
+
+#include <event2/http.h>
+#include <event2/keyvalq_struct.h>
+
+
+bool uri_get_true(struct evkeyvalq *params, const char *key);
+char *uri_get_string(struct evkeyvalq *params, const char *key);

src/logging.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -22,6 +23,7 @@
 #pragma once
 
 #include <stdio.h>
+#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -31,27 +33,41 @@
 
 #include <pthread.h>
 
-#include <sys/types.h>
-#include <sys/syscall.h>
-
 #include "tools.h"
+#include "threading.h"
 
 
-unsigned log_level;
+enum {
+	LOG_LEVEL_INFO,
+	LOG_LEVEL_PERF,
+	LOG_LEVEL_VERBOSE,
+	LOG_LEVEL_DEBUG,
+} log_level;
+
+bool log_colored;
+
 pthread_mutex_t log_mutex;
 
 
-#define LOG_LEVEL_INFO		0
-#define LOG_LEVEL_PERF		1
-#define LOG_LEVEL_VERBOSE	2
-#define LOG_LEVEL_DEBUG		3
+#define LOGGING_INIT { \
+		log_level = LOG_LEVEL_INFO; \
+		log_colored = isatty(1); \
+		A_MUTEX_INIT(&log_mutex); \
+	}
+
+#define LOGGING_DESTROY A_MUTEX_DESTROY(&log_mutex)
+
+#define LOGGING_LOCK	A_MUTEX_LOCK(&log_mutex)
+#define LOGGING_UNLOCK	A_MUTEX_UNLOCK(&log_mutex)
 
 
-#define LOGGING_INIT	assert(!pthread_mutex_init(&log_mutex, NULL))
-#define LOGGING_DESTROY	assert(!pthread_mutex_destroy(&log_mutex))
-
-#define LOGGING_LOCK	assert(!pthread_mutex_lock(&log_mutex))
-#define LOGGING_UNLOCK	assert(!pthread_mutex_unlock(&log_mutex))
+#define COLOR_GRAY		"\x1b[30;1m"
+#define COLOR_RED		"\x1b[31;1m"
+#define COLOR_GREEN		"\x1b[32;1m"
+#define COLOR_YELLOW	"\x1b[33;1m"
+#define COLOR_BLUE		"\x1b[34;1m"
+#define COLOR_CYAN		"\x1b[36;1m"
+#define COLOR_RESET		"\x1b[0m"
 
 
 #define SEP_INFO(_ch) { \
@@ -70,56 +86,75 @@ pthread_mutex_t log_mutex;
 		} \
 	}
 
-#define LOG_PRINTF_NOLOCK(_label, _msg, ...) { \
-		printf("-- " _label " [%.03Lf tid=%ld] -- " _msg "\n", get_now_monotonic(), syscall(SYS_gettid), ##__VA_ARGS__); \
+
+#define LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ...) { \
+		char _buf[MAX_THREAD_NAME] = {0}; \
+		thread_get_name(_buf); \
+		if (log_colored) { \
+			printf(COLOR_GRAY "-- " _label_color _label COLOR_GRAY " [%.03Lf %9s]" " -- " COLOR_RESET _msg_color _msg COLOR_RESET, \
+				get_now_monotonic(), _buf, ##__VA_ARGS__); \
+		} else { \
+			printf("-- " _label " [%.03Lf %9s] -- " _msg, \
+				get_now_monotonic(), _buf, ##__VA_ARGS__); \
+		} \
+		putchar('\n'); \
 		fflush(stdout); \
 	}
 
+#define LOG_PRINTF(_label_color, _label, _msg_color, _msg, ...) { \
+		LOGGING_LOCK; \
+		LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ##__VA_ARGS__); \
+		LOGGING_UNLOCK; \
+	}
+
 #define LOG_ERROR(_msg, ...) { \
-		LOGGING_LOCK; \
-		LOG_PRINTF_NOLOCK("ERROR", _msg, ##__VA_ARGS__); \
-		LOGGING_UNLOCK; \
+		LOG_PRINTF(COLOR_RED, "ERROR", COLOR_RED, _msg, ##__VA_ARGS__); \
 	}
 
 #define LOG_PERROR(_msg, ...) { \
-		char _buf[1024] = ""; \
-		char *_ptr = strerror_r(errno, _buf, 1024); \
-		LOGGING_LOCK; \
-		printf("-- ERROR [%.03Lf tid=%ld] -- " _msg ": %s\n", get_now_monotonic(), syscall(SYS_gettid), ##__VA_ARGS__, _ptr); \
-		fflush(stdout); \
-		LOGGING_UNLOCK; \
+		char _buf[1024] = {0}; \
+		char *_ptr = errno_to_string(_buf, 1024); \
+		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, _ptr); \
 	}
 
 #define LOG_INFO(_msg, ...) { \
-		LOGGING_LOCK; \
-		LOG_PRINTF_NOLOCK("INFO ", _msg, ##__VA_ARGS__); \
-		LOGGING_UNLOCK; \
+		LOG_PRINTF(COLOR_GREEN, "INFO ", "", _msg, ##__VA_ARGS__); \
 	}
 
 #define LOG_INFO_NOLOCK(_msg, ...) { \
-		LOG_PRINTF_NOLOCK("INFO ", _msg, ##__VA_ARGS__); \
+		LOG_PRINTF_NOLOCK(COLOR_GREEN, "INFO ", "", _msg, ##__VA_ARGS__); \
 	}
 
 #define LOG_PERF(_msg, ...) { \
 		if (log_level >= LOG_LEVEL_PERF) { \
-			LOGGING_LOCK; \
-			LOG_PRINTF_NOLOCK("PERF ", _msg, ##__VA_ARGS__); \
-			LOGGING_UNLOCK; \
+			LOG_PRINTF(COLOR_CYAN, "PERF ", COLOR_CYAN, _msg, ##__VA_ARGS__); \
+		} \
+	}
+
+#define LOG_PERF_FPS(_msg, ...) { \
+		if (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) { \
-			LOGGING_LOCK; \
-			LOG_PRINTF_NOLOCK("VERB ", _msg, ##__VA_ARGS__); \
-			LOGGING_UNLOCK; \
+			LOG_PRINTF(COLOR_BLUE, "VERB ", COLOR_BLUE, _msg, ##__VA_ARGS__); \
 		} \
 	}
 
 #define LOG_DEBUG(_msg, ...) { \
 		if (log_level >= LOG_LEVEL_DEBUG) { \
-			LOGGING_LOCK; \
-			LOG_PRINTF_NOLOCK("DEBUG", _msg, ##__VA_ARGS__); \
-			LOGGING_UNLOCK; \
+			LOG_PRINTF(COLOR_GRAY, "DEBUG", COLOR_GRAY, _msg, ##__VA_ARGS__); \
 		} \
 	}
+
+
+INLINE char *errno_to_string(char *buf, size_t size) {
+#	if defined(__GLIBC__) && defined(_GNU_SOURCE)
+	return strerror_r(errno, buf, size);
+#	else
+	strerror_r(errno, buf, size);
+	return buf;
+#	endif
+}

src/main.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -25,211 +26,31 @@
 #endif
 
 #include <stdio.h>
-#include <stdbool.h>
 #include <signal.h>
-#include <getopt.h>
 
 #include <pthread.h>
 
-#include "config.h"
 #include "tools.h"
+#include "threading.h"
 #include "logging.h"
+#include "options.h"
 #include "device.h"
 #include "encoder.h"
 #include "stream.h"
-#include "http.h"
+#include "http/server.h"
+#ifdef WITH_GPIO
+#	include "gpio.h"
+#endif
 
 
-static const char _short_opts[] = "d:i:x:y:f:a:z:tn:w:q:c:s:p:u:ro:e:h";
-static const struct option _long_opts[] = {
-	{"device",					required_argument,	NULL,	'd'},
-	{"input",					required_argument,	NULL,	'i'},
-	{"width",					required_argument,	NULL,	'x'},
-	{"height",					required_argument,	NULL,	'y'},
-	{"format",					required_argument,	NULL,	'm'},
-	{"tv-standard",				required_argument,	NULL,	'a'},
-	{"desired-fps",				required_argument,	NULL,	'f'},
-	{"min-frame-size",			required_argument,	NULL,	'z'},
-	{"dv-timings",				no_argument,		NULL,	't'},
-	{"buffers",					required_argument,	NULL,	'b'},
-	{"workers",					required_argument,	NULL,	'w'},
-	{"quality",					required_argument,	NULL,	'q'},
-	{"encoder",					required_argument,	NULL,	'c'},
-	{"device-timeout",			required_argument,	NULL,	1000},
-	{"device-persistent",		no_argument,		NULL,	1001},
-	{"device-error-delay",		required_argument,	NULL,	1002},
-
-	{"host",					required_argument,	NULL,	's'},
-	{"port",					required_argument,	NULL,	'p'},
-	{"unix",					required_argument,	NULL,	'u'},
-	{"unix-rm",					no_argument,		NULL,	'r'},
-	{"unix-mode",				required_argument,	NULL,	'o'},
-	{"drop-same-frames",		required_argument,	NULL,	'e'},
-	{"fake-width",				required_argument,	NULL,	2001},
-	{"fake-height",				required_argument,	NULL,	2002},
-	{"server-timeout",			required_argument,	NULL,	2003},
-
-	{"perf",					no_argument,		NULL,	5000},
-	{"verbose",					no_argument,		NULL,	5001},
-	{"debug",					no_argument,		NULL,	5002},
-	{"log-level",				required_argument,	NULL,	5010},
-	{"help",					no_argument,		NULL,	'h'},
-	{"version",					no_argument,		NULL,	6000},
-	{NULL, 0, NULL, 0},
-};
-
-static void _version(bool nl) {
-	printf(VERSION);
-#	ifdef OMX_ENCODER
-	printf(" + OMX");
-#	endif
-	if (nl) {
-		putchar('\n');
-	}
-}
-
-static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
-	printf("\nuStreamer - Lightweight and fast MJPG-HTTP streamer\n");
-	printf("===================================================\n\n");
-	printf("Version: ");
-	_version(false);
-	printf("; license: GPLv3\n");
-	printf("Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com>\n\n");
-	printf("Capturing options:\n");
-	printf("------------------\n");
-	printf("    -d|--device </dev/path>          -- Path to V4L2 device. Default: %s.\n\n", dev->path);
-	printf("    -i|--input <N>                   -- Input channel. Default: %u.\n\n", dev->input);
-	printf("    -x|--width <N>                   -- Initial image width. Default: %u.\n\n", dev->width);
-	printf("    -y|--height <N>                  -- Initial image height. Default: %u.\n\n", dev->height);
-	printf("    -m|--format <fmt>                -- Image format.\n");
-	printf("                                        Available: %s; default: YUYV.\n\n", FORMATS_STR);
-	printf("    -a|--tv-standard <std>           -- Force TV standard.\n");
-	printf("                                        Available: %s; default: disabled.\n\n", STANDARDS_STR);
-	printf("    -f|--desired-fps <N>             -- Desired FPS. Default: maximum as possible.\n\n");
-	printf("    -z|--min-frame-size <N>          -- Drop frames smaller then this limit.\n");
-	printf("                                        Useful if the device produces small-sized garbage frames.\n\n");
-	printf("    -t|--dv-timings                  -- Enable DV timings queriyng and events processing.\n");
-	printf("                                        Supports automatic resolution changing. Default: disabled.\n\n");
-	printf("    -b|--buffers <N>                 -- The number of buffers to receive data from the device.\n");
-	printf("                                        Each buffer may processed using an intermediate thread.\n");
-	printf("                                        Default: %u (number of CPU cores + 1)\n\n", dev->n_buffers);
-	printf("    -w|--workers <N>                 -- The number of compressing threads. Default: %u (== --buffers).\n\n", dev->n_workers);
-	printf("    -q|--quality <N>                 -- Set quality of JPEG encoding from 1 to 100 (best). Default: %u.\n\n", encoder->quality);
-	printf("    -c|--encoder <type>              -- Use specified encoder. It may affects to workers number.\n");
-	printf("                                     -- Available: %s; default: CPU.\n\n", ENCODER_TYPES_STR);
-	printf("    --device-timeout <seconds>       -- Timeout for device querying. Default: %u\n\n", dev->timeout);
-	printf("    --device-persistent              -- Don't re-initialize device on timeout. Default: disabled.\n\n");
-	printf("    --device-error-delay <seconds>   -- Delay before trying to connect to the device again\n");
-	printf("                                        after a timeout. Default: %u\n\n", dev->error_delay);
-	printf("HTTP server options:\n");
-	printf("--------------------\n");
-	printf("    -s|--host <address>        -- Listen on Hostname or IP. Default: %s\n\n", server->host);
-	printf("    -p|--port <N>              -- Bind to this TCP port. Default: %u\n\n", server->port);
-	printf("    -u|--unix <path>           -- Bind to UNIX domain socket. Default: disabled\n\n");
-	printf("    -r|--unix-rm               -- Try to remove old UNIX socket file before binding. Default: disabled\n\n");
-	printf("    -o|--unix-mode <mode>      -- Set UNIX socket file permissions (like 777). Default: disabled\n\n");
-	printf("    -e|--drop-same-frames <N>  -- Don't send same frames to clients, but no more than specified number.\n");
-	printf("                                  It can significantly reduce the outgoing traffic, but will increase\n");
-	printf("                                  the CPU loading. Don't use this option with analog signal sources\n");
-	printf("                                  or webcams, it's useless. Default: disabled.\n\n");
-	printf("    --fake-width <N>           -- Override image width for /state. Default: disabled\n\n");
-	printf("    --fake-height <N>          -- Override image height for /state. Default: disabled.\n\n");
-	printf("    --server-timeout <seconds> -- Timeout for client connections. Default: %u\n\n", server->timeout);
-	printf("Misc options:\n");
-	printf("-------------\n");
-	printf("    --log-level <N> -- Verbosity level of messages from 0 (info) to 3 (debug).\n");
-	printf("                       Enabling debugging messages can slow down the program.\n");
-	printf("                       Available levels: 0=info, 1=performance, 2=verbose, 3=debug.\n");
-	printf("                       Default: %u.\n\n", log_level);
-	printf("    --perf          -- Enable performance messages (same as --log-level=1). Default: disabled.\n\n");
-	printf("    --verbose       -- Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n\n");
-	printf("    --debug         -- Enable debug messages and lower (same as --log-level=3). Default: disabled.\n\n");
-	printf("    -h|--help       -- Print this messages and exit.\n\n");
-}
-
-static int _parse_options(int argc, char *argv[], struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
-#	define OPT_SET(_dest, _value) \
-		{ _dest = _value; break; }
-
-#	define OPT_UNSIGNED(_dest, _name, _min, _max) \
-		{ errno = 0; char *_end = NULL; int _tmp = strtol(optarg, &_end, 0); \
-		if (errno || *_end || _tmp < _min || _tmp > _max) \
-		{ printf("Invalid value for '%s=%s'; min=%u; max=%u\n", _name, optarg, _min, _max); return -1; } \
-		_dest = _tmp; break; }
-
-#	define OPT_PARSE(_dest, _func, _invalid, _name) \
-		{ if ((_dest = _func(optarg)) == _invalid) \
-		{ printf("Unknown " _name ": %s\n", optarg); return -1; } \
-		break; }
-
-#	define OPT_CHMOD(_dest, _name) \
-		{ errno = 0; char *_end = NULL; int _tmp = strtol(optarg, &_end, 8); \
-		if (errno || *_end) \
-		{ printf("Invalid value for '%s=%s'\n", _name, optarg); return -1; } \
-		_dest = _tmp; break; }
-
-	int index;
-	int ch;
-
-	log_level = LOG_LEVEL_INFO;
-	while ((ch = getopt_long(argc, argv, _short_opts, _long_opts, &index)) >= 0) {
-		switch (ch) {
-			case 'd':	OPT_SET(dev->path, optarg);
-			case 'i':	OPT_UNSIGNED(dev->input, "--input", 0, 128);
-			case 'x':	OPT_UNSIGNED(dev->width, "--width", VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH);
-			case 'y':	OPT_UNSIGNED(dev->height, "--height", VIDEO_MIN_HEIGHT, VIDEO_MAX_HEIGHT);
-#			pragma GCC diagnostic ignored "-Wsign-compare"
-#			pragma GCC diagnostic push
-			case 'm':	OPT_PARSE(dev->format, device_parse_format, FORMAT_UNKNOWN, "pixel format");
-#			pragma GCC diagnostic pop
-			case 'a':	OPT_PARSE(dev->standard, device_parse_standard, STANDARD_UNKNOWN, "TV standard");
-			case 'f':	OPT_UNSIGNED(dev->desired_fps, "--desired-fps", 0, 30);
-			case 'z':	OPT_UNSIGNED(dev->min_frame_size, "--min-frame-size", 0, 8192);
-			case 't':	OPT_SET(dev->dv_timings, true);
-			case 'b':	OPT_UNSIGNED(dev->n_buffers, "--buffers", 1, 32);
-			case 'w':	OPT_UNSIGNED(dev->n_workers, "--workers", 1, 32);
-			case 'q':	OPT_UNSIGNED(encoder->quality, "--quality", 1, 100);
-			case 'c':	OPT_PARSE(encoder->type, encoder_parse_type, ENCODER_TYPE_UNKNOWN, "encoder type");
-			case 1000:	OPT_UNSIGNED(dev->timeout, "--device-timeout", 1, 60);
-			case 1001:	OPT_SET(dev->persistent, true);
-			case 1002:	OPT_UNSIGNED(dev->error_delay, "--device-error-delay", 1, 60);
-
-			case 's':	OPT_SET(server->host, optarg);
-			case 'p':	OPT_UNSIGNED(server->port, "--port", 1, 65535);
-			case 'u':	OPT_SET(server->unix_path, optarg);
-			case 'r':	OPT_SET(server->unix_rm, true);
-			case 'o':	OPT_CHMOD(server->unix_mode, "--unix-mode");
-			case 'e':	OPT_UNSIGNED(server->drop_same_frames, "--drop-same-frames", 0, 30);
-			case 2001:	OPT_UNSIGNED(server->fake_width, "--fake-width", 0, 1920);
-			case 2002:	OPT_UNSIGNED(server->fake_height, "--fake-height", 0, 1200);
-			case 2003:	OPT_UNSIGNED(server->timeout, "--server-timeout", 1, 60);
-
-			case 5000:	OPT_SET(log_level, LOG_LEVEL_PERF);
-			case 5001:	OPT_SET(log_level, LOG_LEVEL_VERBOSE);
-			case 5002:	OPT_SET(log_level, LOG_LEVEL_DEBUG);
-			case 5010:	OPT_UNSIGNED(log_level, "--log-level", 0, 3);
-			case 'h':	_help(dev, encoder, server); return 1;
-			case 6000:	_version(true); return 1;
-			case 0:		break;
-			default:	_help(dev, encoder, server); return -1;
-		}
-	}
-
-#	undef OPT_CHMOD
-#	undef OPT_PARSE
-#	undef OPT_UNSIGNED
-#	undef OPT_SET
-	return 0;
-}
-
-struct main_context_t {
+struct _main_context_t {
 	struct stream_t			*stream;
 	struct http_server_t	*server;
 };
 
-static struct main_context_t *_ctx;
+static struct _main_context_t *_ctx;
 
-static void _block_thread_signals() {
+static void _block_thread_signals(void) {
 	sigset_t mask;
 	assert(!sigemptyset(&mask));
 	assert(!sigaddset(&mask, SIGINT));
@@ -238,12 +59,14 @@ static void _block_thread_signals() {
 }
 
 static void *_stream_loop_thread(UNUSED void *arg) {
+	A_THREAD_RENAME("stream");
 	_block_thread_signals();
 	stream_loop(_ctx->stream);
 	return NULL;
 }
 
 static void *_server_loop_thread(UNUSED void *arg) {
+	A_THREAD_RENAME("http");
 	_block_thread_signals();
 	http_server_loop(_ctx->server);
 	return NULL;
@@ -255,7 +78,7 @@ static void _signal_handler(int signum) {
 	http_server_loop_break(_ctx->server);
 }
 
-static void _install_signal_handlers() {
+static void _install_signal_handlers(void) {
 	struct sigaction sig_act;
 
 	MEMSET_ZERO(sig_act);
@@ -283,28 +106,41 @@ int main(int argc, char *argv[]) {
 
 	LOGGING_INIT;
 
+	A_THREAD_RENAME("main");
+
+#	ifdef WITH_GPIO
+	GPIO_INIT;
+#	endif
+
 	dev = device_init();
 	encoder = encoder_init();
 	stream = stream_init(dev, encoder);
 	server = http_server_init(stream);
 
-	if ((exit_code = _parse_options(argc, argv, dev, encoder, server)) == 0) {
+	if ((exit_code = parse_options(argc, argv, dev, encoder, server)) == 0) {
+#		ifdef WITH_GPIO
+		GPIO_INIT_PINOUT;
+#		endif
+
 		_install_signal_handlers();
-		encoder_prepare(encoder, dev);
 
 		pthread_t stream_loop_tid;
 		pthread_t server_loop_tid;
-		struct main_context_t ctx;
+		struct _main_context_t ctx;
 
 		ctx.stream = stream;
 		ctx.server = server;
 		_ctx = &ctx;
 
 		if ((exit_code = http_server_listen(server)) == 0) {
-			A_PTHREAD_CREATE(&stream_loop_tid, _stream_loop_thread, NULL);
-			A_PTHREAD_CREATE(&server_loop_tid, _server_loop_thread, NULL);
-			A_PTHREAD_JOIN(stream_loop_tid);
-			A_PTHREAD_JOIN(server_loop_tid);
+#			ifdef WITH_GPIO
+			GPIO_SET_HIGH(prog_running);
+#			endif
+
+			A_THREAD_CREATE(&stream_loop_tid, _stream_loop_thread, NULL);
+			A_THREAD_CREATE(&server_loop_tid, _server_loop_thread, NULL);
+			A_THREAD_JOIN(server_loop_tid);
+			A_THREAD_JOIN(stream_loop_tid);
 		}
 	}
 
@@ -313,6 +149,13 @@ int main(int argc, char *argv[]) {
 	encoder_destroy(encoder);
 	device_destroy(dev);
 
+#	ifdef WITH_GPIO
+	GPIO_SET_LOW(prog_running);
+#	endif
+
+	if (exit_code == 0) {
+		LOG_INFO("Bye-bye");
+	}
 	LOGGING_DESTROY;
 	return (exit_code < 0 ? 1 : 0);
 }

src/options.c

@@ -0,0 +1,617 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "options.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#ifdef WITH_OMX
+#	include <string.h>
+#endif
+#include <ctype.h>
+#include <limits.h>
+#include <getopt.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "config.h"
+#include "logging.h"
+#include "process.h"
+#include "device.h"
+#include "encoder.h"
+#include "http/server.h"
+#ifdef WITH_GPIO
+#	include "gpio.h"
+#endif
+
+
+enum _OPT_VALUES {
+	_O_DEVICE = 'd',
+	_O_INPUT = 'i',
+	_O_RESOLUTION = 'r',
+	_O_FORMAT = 'm',
+	_O_TV_STANDARD = 'a',
+	_O_DESIRED_FPS = 'f',
+	_O_MIN_FRAME_SIZE = 'z',
+	_O_PERSISTENT = 'n',
+	_O_DV_TIMINGS = 't',
+	_O_BUFFERS = 'b',
+	_O_WORKERS = 'w',
+	_O_QUALITY = 'q',
+	_O_ENCODER = 'c',
+#ifdef WITH_OMX
+	_O_GLITCHED_RESOLUTIONS = 'g',
+#endif
+
+	_O_HOST = 's',
+	_O_PORT = 'p',
+	_O_UNIX = 'U',
+	_O_UNIX_RM = 'D',
+	_O_UNIX_MODE = 'M',
+	_O_BLANK = 'k',
+	_O_LAST_AS_BLANK = 'K',
+	_O_DROP_SAME_FRAMES = 'e',
+	_O_SLOWDOWN = 'l',
+	_O_FAKE_RESOLUTION = 'R',
+
+	_O_HELP = 'h',
+	_O_VERSION = 'v',
+
+	// Longs only
+
+	_O_DEVICE_TIMEOUT = 10000,
+	_O_DEVICE_ERROR_DELAY,
+
+	_O_BRIGHTNESS,
+	_O_BRIGHTNESS_AUTO,
+	_O_CONTRAST,
+	_O_SATURATION,
+	_O_HUE,
+	_O_HUE_AUTO,
+	_O_GAMMA,
+	_O_SHARPNESS,
+	_O_BACKLIGHT_COMPENSATION,
+	_O_WHITE_BALANCE,
+	_O_WHITE_BALANCE_AUTO,
+	_O_GAIN,
+	_O_GAIN_AUTO,
+
+	_O_USER,
+	_O_PASSWD,
+	_O_STATIC,
+	_O_SERVER_TIMEOUT,
+
+#ifdef WITH_GPIO
+	_O_GPIO_PROG_RUNNING,
+	_O_GPIO_STREAM_ONLINE,
+	_O_GPIO_HAS_HTTP_CLIENTS,
+	_O_GPIO_WORKERS_BUSY_AT,
+#endif
+
+#ifdef HAS_PDEATHSIG
+	_O_EXIT_ON_PARENT_DEATH,
+#endif
+#ifdef WITH_SETPROCTITLE
+	_O_PROCESS_NAME_PREFIX,
+#endif
+
+	_O_LOG_LEVEL,
+	_O_PERF,
+	_O_VERBOSE,
+	_O_DEBUG,
+	_O_FORCE_LOG_COLORS,
+	_O_NO_LOG_COLORS,
+
+	_O_FEATURES,
+};
+
+static const struct option _LONG_OPTS[] = {
+	{"device",					required_argument,	NULL,	_O_DEVICE},
+	{"input",					required_argument,	NULL,	_O_INPUT},
+	{"resolution",				required_argument,	NULL,	_O_RESOLUTION},
+	{"format",					required_argument,	NULL,	_O_FORMAT},
+	{"tv-standard",				required_argument,	NULL,	_O_TV_STANDARD},
+	{"desired-fps",				required_argument,	NULL,	_O_DESIRED_FPS},
+	{"min-frame-size",			required_argument,	NULL,	_O_MIN_FRAME_SIZE},
+	{"persistent",				no_argument,		NULL,	_O_PERSISTENT},
+	{"dv-timings",				no_argument,		NULL,	_O_DV_TIMINGS},
+	{"buffers",					required_argument,	NULL,	_O_BUFFERS},
+	{"workers",					required_argument,	NULL,	_O_WORKERS},
+	{"quality",					required_argument,	NULL,	_O_QUALITY},
+	{"encoder",					required_argument,	NULL,	_O_ENCODER},
+#	ifdef WITH_OMX
+	{"glitched-resolutions",	required_argument,	NULL,	_O_GLITCHED_RESOLUTIONS},
+#	endif
+	{"device-timeout",			required_argument,	NULL,	_O_DEVICE_TIMEOUT},
+	{"device-error-delay",		required_argument,	NULL,	_O_DEVICE_ERROR_DELAY},
+
+	{"brightness",				required_argument,	NULL,	_O_BRIGHTNESS},
+	{"brightness-auto",			no_argument,		NULL,	_O_BRIGHTNESS_AUTO},
+	{"contrast",				required_argument,	NULL,	_O_CONTRAST},
+	{"saturation",				required_argument,	NULL,	_O_SATURATION},
+	{"hue",						required_argument,	NULL,	_O_HUE},
+	{"hue-auto",				no_argument,		NULL,	_O_HUE_AUTO},
+	{"gamma",					required_argument,	NULL,	_O_GAMMA},
+	{"sharpness",				required_argument,	NULL,	_O_SHARPNESS},
+	{"backlight-compensation",	required_argument,	NULL,	_O_BACKLIGHT_COMPENSATION},
+	{"white-balance",			required_argument,	NULL,	_O_WHITE_BALANCE},
+	{"white-balance-auto",		no_argument,		NULL,	_O_WHITE_BALANCE_AUTO},
+	{"gain",					required_argument,	NULL,	_O_GAIN},
+	{"gain-auto",				no_argument,		NULL,	_O_GAIN_AUTO},
+
+	{"host",					required_argument,	NULL,	_O_HOST},
+	{"port",					required_argument,	NULL,	_O_PORT},
+	{"unix",					required_argument,	NULL,	_O_UNIX},
+	{"unix-rm",					no_argument,		NULL,	_O_UNIX_RM},
+	{"unix-mode",				required_argument,	NULL,	_O_UNIX_MODE},
+	{"user",					required_argument,	NULL,	_O_USER},
+	{"passwd",					required_argument,	NULL,	_O_PASSWD},
+	{"static",					required_argument,	NULL,	_O_STATIC},
+	{"blank",					required_argument,	NULL,	_O_BLANK},
+	{"last-as-blank",			required_argument,	NULL,	_O_LAST_AS_BLANK},
+	{"drop-same-frames",		required_argument,	NULL,	_O_DROP_SAME_FRAMES},
+	{"slowdown",				no_argument,		NULL,	_O_SLOWDOWN},
+	{"fake-resolution",			required_argument,	NULL,	_O_FAKE_RESOLUTION},
+	{"server-timeout",			required_argument,	NULL,	_O_SERVER_TIMEOUT},
+
+#ifdef WITH_GPIO
+	{"gpio-prog-running",		required_argument,	NULL,	_O_GPIO_PROG_RUNNING},
+	{"gpio-stream-online",		required_argument,	NULL,	_O_GPIO_STREAM_ONLINE},
+	{"gpio-has-http-clients",	required_argument,	NULL,	_O_GPIO_HAS_HTTP_CLIENTS},
+	{"gpio-workers-busy-at",	required_argument,	NULL,	_O_GPIO_WORKERS_BUSY_AT},
+#endif
+
+#ifdef HAS_PDEATHSIG
+	{"exit-on-parent-death",	no_argument,		NULL,	_O_EXIT_ON_PARENT_DEATH},
+#endif
+#ifdef WITH_SETPROCTITLE
+	{"process-name-prefix",		required_argument,	NULL,	_O_PROCESS_NAME_PREFIX},
+#endif
+
+	{"log-level",				required_argument,	NULL,	_O_LOG_LEVEL},
+	{"perf",					no_argument,		NULL,	_O_PERF},
+	{"verbose",					no_argument,		NULL,	_O_VERBOSE},
+	{"debug",					no_argument,		NULL,	_O_DEBUG},
+	{"force-log-colors",		no_argument,		NULL,	_O_FORCE_LOG_COLORS},
+	{"no-log-colors",			no_argument,		NULL,	_O_NO_LOG_COLORS},
+
+	{"help",					no_argument,		NULL,	_O_HELP},
+	{"version",					no_argument,		NULL,	_O_VERSION},
+	{"features",				no_argument,		NULL,	_O_FEATURES},
+
+	{NULL, 0, NULL, 0},
+};
+
+
+static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited);
+#ifdef WITH_OMX
+static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder);
+#endif
+
+static void _features(void);
+static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server);
+
+
+int parse_options(int argc, char *argv[], struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
+#	define OPT_SET(_dest, _value) { \
+			_dest = _value; \
+			break; \
+		}
+
+#	define OPT_NUMBER(_name, _dest, _min, _max, _base) { \
+			errno = 0; char *_end = NULL; long long _tmp = strtoll(optarg, &_end, _base); \
+			if (errno || *_end || _tmp < _min || _tmp > _max) { \
+				printf("Invalid value for '%s=%s': min=%u, max=%u\n", _name, optarg, _min, _max); \
+				return -1; \
+			} \
+			_dest = _tmp; \
+			break; \
+		}
+
+#	define OPT_RESOLUTION(_name, _dest_width, _dest_height, _limited) { \
+			switch (_parse_resolution(optarg, &_dest_width, &_dest_height, _limited)) { \
+				case -1: \
+					printf("Invalid resolution format for '%s=%s'\n", _name, optarg); \
+					return -1; \
+				case -2: \
+					printf("Invalid width of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH); \
+					return -1; \
+				case -3: \
+					printf("Invalid height of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_HEIGHT, VIDEO_MAX_HEIGHT); \
+					return -1; \
+				case 0: break; \
+				default: assert(0 && "Unknown error"); \
+			} \
+			break; \
+		}
+
+#	define OPT_PARSE(_name, _dest, _func, _invalid, _available) { \
+			if ((_dest = _func(optarg)) == _invalid) { \
+				printf("Unknown " _name ": %s; available: %s\n", optarg, _available); \
+				return -1; \
+			} \
+			break; \
+		}
+
+#	define OPT_CTL(_dest) { \
+			dev->ctl._dest.value_set = true; \
+			dev->ctl._dest.auto_set = false; \
+			OPT_NUMBER("--"#_dest, dev->ctl._dest.value, INT_MIN, INT_MAX, 0); \
+			break; \
+		}
+
+#	define OPT_CTL_AUTO(_dest) { \
+			dev->ctl._dest.value_set = false; \
+			dev->ctl._dest.auto_set = true; \
+			break; \
+		}
+
+	int ch;
+	int short_index;
+	int opt_index;
+	char short_opts[1024] = {0};
+#	ifdef WITH_SETPROCTITLE
+	char *process_name_prefix = NULL;
+#	endif
+
+	for (short_index = 0, opt_index = 0; _LONG_OPTS[opt_index].name != NULL; ++opt_index) {
+		if (isalpha(_LONG_OPTS[opt_index].val)) {
+			short_opts[short_index] = _LONG_OPTS[opt_index].val;
+			++short_index;
+			if (_LONG_OPTS[opt_index].has_arg == required_argument) {
+				short_opts[short_index] = ':';
+				++short_index;
+			}
+		}
+	}
+
+	while ((ch = getopt_long(argc, argv, short_opts, _LONG_OPTS, NULL)) >= 0) {
+		switch (ch) {
+			case _O_DEVICE:			OPT_SET(dev->path, optarg);
+			case _O_INPUT:			OPT_NUMBER("--input", dev->input, 0, 128, 0);
+			case _O_RESOLUTION:		OPT_RESOLUTION("--resolution", dev->width, dev->height, true);
+#			pragma GCC diagnostic ignored "-Wsign-compare"
+#			pragma GCC diagnostic push
+			case _O_FORMAT:			OPT_PARSE("pixel format", dev->format, device_parse_format, FORMAT_UNKNOWN, FORMATS_STR);
+#			pragma GCC diagnostic pop
+			case _O_TV_STANDARD:	OPT_PARSE("TV standard", dev->standard, device_parse_standard, STANDARD_UNKNOWN, STANDARDS_STR);
+			case _O_DESIRED_FPS:	OPT_NUMBER("--desired-fps", dev->desired_fps, 0, VIDEO_MAX_FPS, 0);
+			case _O_MIN_FRAME_SIZE:	OPT_NUMBER("--min-frame-size", dev->min_frame_size, 0, 8192, 0);
+			case _O_PERSISTENT:		OPT_SET(dev->persistent, true);
+			case _O_DV_TIMINGS:		OPT_SET(dev->dv_timings, true);
+			case _O_BUFFERS:		OPT_NUMBER("--buffers", dev->n_buffers, 1, 32, 0);
+			case _O_WORKERS:		OPT_NUMBER("--workers", dev->n_workers, 1, 32, 0);
+			case _O_QUALITY:		OPT_NUMBER("--quality", encoder->quality, 1, 100, 0);
+			case _O_ENCODER:		OPT_PARSE("encoder type", encoder->type, encoder_parse_type, ENCODER_TYPE_UNKNOWN, ENCODER_TYPES_STR);
+#			ifdef WITH_OMX
+			case _O_GLITCHED_RESOLUTIONS:
+				if (_parse_glitched_resolutions(optarg, encoder) < 0) {
+					return -1;
+				}
+				break;
+#			endif
+			case _O_DEVICE_TIMEOUT:		OPT_NUMBER("--device-timeout", dev->timeout, 1, 60, 0);
+			case _O_DEVICE_ERROR_DELAY:	OPT_NUMBER("--device-error-delay", dev->error_delay, 1, 60, 0);
+
+			case _O_BRIGHTNESS:				OPT_CTL(brightness);
+			case _O_BRIGHTNESS_AUTO:		OPT_CTL_AUTO(brightness);
+			case _O_CONTRAST:				OPT_CTL(contrast);
+			case _O_SATURATION:				OPT_CTL(saturation);
+			case _O_HUE:					OPT_CTL(hue);
+			case _O_HUE_AUTO:				OPT_CTL_AUTO(hue);
+			case _O_GAMMA:					OPT_CTL(gamma);
+			case _O_SHARPNESS:				OPT_CTL(sharpness);
+			case _O_BACKLIGHT_COMPENSATION:	OPT_CTL(backlight_compensation);
+			case _O_WHITE_BALANCE:			OPT_CTL(white_balance);
+			case _O_WHITE_BALANCE_AUTO:		OPT_CTL_AUTO(white_balance);
+			case _O_GAIN:					OPT_CTL(gain);
+			case _O_GAIN_AUTO:				OPT_CTL_AUTO(gain);
+
+			case _O_HOST:				OPT_SET(server->host, optarg);
+			case _O_PORT:				OPT_NUMBER("--port", server->port, 1, 65535, 0);
+			case _O_UNIX:				OPT_SET(server->unix_path, optarg);
+			case _O_UNIX_RM:			OPT_SET(server->unix_rm, true);
+			case _O_UNIX_MODE:			OPT_NUMBER("--unix-mode", server->unix_mode, INT_MIN, INT_MAX, 8);
+			case _O_USER:				OPT_SET(server->user, optarg);
+			case _O_PASSWD:				OPT_SET(server->passwd, optarg);
+			case _O_STATIC:				OPT_SET(server->static_path, optarg);
+			case _O_BLANK:				OPT_SET(server->blank_path, optarg);
+			case _O_LAST_AS_BLANK:		OPT_NUMBER("--last-as-blank", server->last_as_blank, 0, 86400, 0);
+			case _O_DROP_SAME_FRAMES:	OPT_NUMBER("--drop-same-frames", server->drop_same_frames, 0, VIDEO_MAX_FPS, 0);
+			case _O_SLOWDOWN:			OPT_SET(server->slowdown, true);
+			case _O_FAKE_RESOLUTION:	OPT_RESOLUTION("--fake-resolution", server->fake_width, server->fake_height, false);
+			case _O_SERVER_TIMEOUT:		OPT_NUMBER("--server-timeout", server->timeout, 1, 60, 0);
+
+#			ifdef WITH_GPIO
+			case _O_GPIO_PROG_RUNNING:		OPT_NUMBER("--gpio-prog-running", gpio_pin_prog_running, 0, 256, 0);
+			case _O_GPIO_STREAM_ONLINE:		OPT_NUMBER("--gpio-stream-online", gpio_pin_stream_online, 0, 256, 0);
+			case _O_GPIO_HAS_HTTP_CLIENTS:	OPT_NUMBER("--gpio-has-http-clients", gpio_pin_has_http_clients, 0, 256, 0);
+			case _O_GPIO_WORKERS_BUSY_AT:	OPT_NUMBER("--gpio-workers-busy-at", gpio_pin_workers_busy_at, 0, 256, 0);
+#			endif
+
+#			ifdef HAS_PDEATHSIG
+			case _O_EXIT_ON_PARENT_DEATH:
+				if (process_track_parent_death() < 0) {
+					return -1;
+				};
+				break;
+#			endif
+#			ifdef WITH_SETPROCTITLE
+			case _O_PROCESS_NAME_PREFIX:	OPT_SET(process_name_prefix, optarg);
+#			endif
+
+			case _O_LOG_LEVEL:			OPT_NUMBER("--log-level", log_level, LOG_LEVEL_INFO, LOG_LEVEL_DEBUG, 0);
+			case _O_PERF:				OPT_SET(log_level, LOG_LEVEL_PERF);
+			case _O_VERBOSE:			OPT_SET(log_level, LOG_LEVEL_VERBOSE);
+			case _O_DEBUG:				OPT_SET(log_level, LOG_LEVEL_DEBUG);
+			case _O_FORCE_LOG_COLORS:	OPT_SET(log_colored, true);
+			case _O_NO_LOG_COLORS:		OPT_SET(log_colored, false);
+
+			case _O_HELP:		_help(dev, encoder, server); return 1;
+			case _O_VERSION:	puts(VERSION); return 1;
+			case _O_FEATURES:	_features(); return 1;
+
+			case 0:		break;
+			default:	_help(dev, encoder, server); return -1;
+		}
+	}
+
+#	ifdef WITH_SETPROCTITLE
+	if (process_name_prefix != NULL) {
+		process_set_name_prefix(argc, argv, process_name_prefix);
+	}
+#	endif
+
+#	undef OPT_CTL_AUTO
+#	undef OPT_CTL
+#	undef OPT_PARSE
+#	undef OPT_RESOLUTION
+#	undef OPT_NUMBER
+#	undef OPT_SET
+	return 0;
+}
+
+static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited) {
+	unsigned tmp_width;
+	unsigned tmp_height;
+
+	if (sscanf(str, "%ux%u", &tmp_width, &tmp_height) != 2) {
+		return -1;
+	}
+	if (limited) {
+		if (tmp_width < VIDEO_MIN_WIDTH || tmp_width > VIDEO_MAX_WIDTH) {
+			return -2;
+		}
+		if (tmp_height < VIDEO_MIN_HEIGHT || tmp_height > VIDEO_MAX_HEIGHT) {
+			return -3;
+		}
+	}
+	*width = tmp_width;
+	*height = tmp_height;
+	return 0;
+}
+
+#ifdef WITH_OMX
+static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder) {
+	char *str_copy;
+	char *ptr;
+	unsigned count = 0;
+	unsigned width;
+	unsigned height;
+
+	assert((str_copy = strdup(str)) != NULL);
+
+	ptr = strtok(str_copy, ",;:\n\t ");
+	while (ptr != NULL) {
+		if (count >= MAX_GLITCHED_RESOLUTIONS) {
+			printf("Too big '--glitched-resolutions' list: maxlen=%u\n", MAX_GLITCHED_RESOLUTIONS);
+			goto error;
+		}
+
+		switch (_parse_resolution(ptr, &width, &height, true)) {
+			case -1:
+				printf("Invalid resolution format of '%s' in '--glitched-resolutions=%s\n", ptr, str_copy);
+				goto error;
+			case -2:
+				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
+					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
+				goto error;
+			case -3:
+				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
+					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
+				goto error;
+			case 0: break;
+			default: assert(0 && "Unknown error");
+		}
+
+		encoder->glitched_resolutions[count][0] = width;
+		encoder->glitched_resolutions[count][1] = height;
+		count += 1;
+
+		ptr = strtok(NULL, ",;:\n\t ");
+	}
+
+	encoder->n_glitched_resolutions = count;
+	free(str_copy);
+	return 0;
+
+	error:
+		free(str_copy);
+		return -1;
+}
+#endif
+
+static void _features(void) {
+#	ifdef WITH_OMX
+	puts("+ WITH_OMX");
+#	else
+	puts("- WITH_OMX");
+#	endif
+
+#	ifdef WITH_GPIO
+	puts("+ WITH_GPIO");
+#	else
+	puts("- WITH_GPIO");
+#	endif
+
+#	ifdef WITH_PTHREAD_NP
+	puts("+ WITH_PTHREAD_NP");
+#	else
+	puts("- WITH_PTHREAD_NP");
+#	endif
+
+#	ifdef WITH_SETPROCTITLE
+	puts("+ WITH_SETPROCTITLE");
+#	else
+	puts("- WITH_SETPROCTITLE");
+#	endif
+
+#	ifdef HAS_PDEATHSIG
+	puts("+ HAS_PDEATHSIG");
+#	else
+	puts("- HAS_PDEATHSIG");
+#	endif
+}
+
+static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
+	printf("\nuStreamer - Lightweight and fast MJPG-HTTP streamer\n");
+	printf("═══════════════════════════════════════════════════\n\n");
+	printf("Version: %s; license: GPLv3\n", VERSION);
+	printf("Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com>\n\n");
+	printf("Capturing options:\n");
+	printf("══════════════════\n");
+	printf("    -d|--device </dev/path>  ───────────── Path to V4L2 device. Default: %s.\n\n", dev->path);
+	printf("    -i|--input <N>  ────────────────────── Input channel. Default: %u.\n\n", dev->input);
+	printf("    -r|--resolution <WxH>  ─────────────── Initial image resolution. Default: %ux%u.\n\n", dev->width, dev->height);
+	printf("    -m|--format <fmt>  ─────────────────── Image format.\n");
+	printf("                                           Available: %s; default: YUYV.\n\n", FORMATS_STR);
+	printf("    -a|--tv-standard <std>  ────────────── Force TV standard.\n");
+	printf("                                           Available: %s; default: disabled.\n\n", STANDARDS_STR);
+	printf("    -f|--desired-fps <N>  ──────────────── Desired FPS. Default: maximum possible.\n\n");
+	printf("    -z|--min-frame-size <N>  ───────────── Drop frames smaller then this limit. Useful if the device\n");
+	printf("                                           produces small-sized garbage frames. Default: disabled.\n\n");
+	printf("    -n|--persistent  ───────────────────── Don't re-initialize device on timeout. Default: disabled.\n\n");
+	printf("    -t|--dv-timings  ───────────────────── Enable DV timings querying and events processing\n");
+	printf("                                           to automatic resolution change. Default: disabled.\n\n");
+	printf("    -b|--buffers <N>  ──────────────────── The number of buffers to receive data from the device.\n");
+	printf("                                           Each buffer may processed using an independent thread.\n");
+	printf("                                           Default: %u (the number of CPU cores (but not more than 4) + 1).\n\n", dev->n_buffers);
+	printf("    -w|--workers <N>  ──────────────────── The number of worker threads but not more than buffers.\n");
+	printf("                                           Default: %u (the number of CPU cores (but not more than 4)).\n\n", dev->n_workers);
+	printf("    -q|--quality <N>  ──────────────────── Set quality of JPEG encoding from 1 to 100 (best). Default: %u.\n", encoder->quality);
+	printf("                                           Note: If HW encoding is used (JPEG source format selected),\n");
+	printf("                                           this parameter attempts to configure the camera\n");
+	printf("                                           or capture device hardware's internal encoder.\n");
+	printf("                                           It does not re-encode MJPG to MJPG to change the quality level\n");
+	printf("                                           for sources that already output MJPG.\n\n");
+	printf("    -c|--encoder <type>  ───────────────── Use specified encoder. It may affect the number of workers.\n");
+	printf("                                           Available:\n");
+	printf("                                             * CPU  ─ Software MJPG encoding (default);\n");
+#	ifdef WITH_OMX
+	printf("                                             * OMX  ─ GPU hardware accelerated MJPG encoding with OpenMax;\n");
+#	endif
+	printf("                                             * HW  ── Use pre-encoded MJPG frames directly from camera hardware.\n\n");
+#	ifdef WITH_OMX
+	printf("    -g|--glitched-resolutions <WxH,...>  ─ Comma-separated list of resolutions that require forced\n");
+	printf("                                           encoding on CPU instead of OMX. Default: disabled.\n\n");
+#	endif
+	printf("    --device-timeout <sec>  ────────────── Timeout for device querying. Default: %u.\n\n", dev->timeout);
+	printf("    --device-error-delay <sec>  ────────── Delay before trying to connect to the device again\n");
+	printf("                                           after an error (timeout for example). Default: %u.\n\n", dev->error_delay);
+	printf("Image control options:\n");
+	printf("══════════════════════\n");
+	printf("    --brightness <N>  ───────────── Set brightness. Default: no change.\n\n");
+	printf("    --brightness-auto  ──────────── Enable automatic brightness control. Default: no change.\n\n");
+	printf("    --contrast <N>  ─────────────── Set contrast. Default: no change.\n\n");
+	printf("    --saturation <N>  ───────────── Set saturation. Default: no change.\n\n");
+	printf("    --hue <N>  ──────────────────── Set hue. Default: no change.\n\n");
+	printf("    --hue-auto  ─────────────────── Enable automatic hue control. Default: no change.\n\n");
+	printf("    --gamma <N>  ────────────────── Set gamma. Default: no change.\n\n");
+	printf("    --sharpness <N>  ────────────── Set sharpness. Default: no change.\n\n");
+	printf("    --backlight-compensation <N>  ─ Set backlight compensation. Default: no change.\n\n");
+	printf("    --white-balance <N>  ────────── Set white balance. Default: no change.\n\n");
+	printf("    --white-balance-auto  ───────── Enable automatic white balance control. Default: no change.\n\n");
+	printf("    --gain <N>  ─────────────────── Set gain. Default: no change.\n\n");
+	printf("    --gain-auto  ────────────────── Enable automatic gain control. Default: no change.\n\n");
+	printf("HTTP server options:\n");
+	printf("════════════════════\n");
+	printf("    -s|--host <address>  ──────── Listen on Hostname or IP. Default: %s.\n\n", server->host);
+	printf("    -p|--port <N>  ────────────── Bind to this TCP port. Default: %u.\n\n", server->port);
+	printf("    -U|--unix <path>  ─────────── Bind to UNIX domain socket. Default: disabled.\n\n");
+	printf("    -D|--unix-rm  ─────────────── Try to remove old UNIX socket file before binding. Default: disabled.\n\n");
+	printf("    -M|--unix-mode <mode>  ────── Set UNIX socket file permissions (like 777). Default: disabled.\n\n");
+	printf("    --user <name>  ────────────── HTTP basic auth user. Default: disabled.\n\n");
+	printf("    --passwd <str>  ───────────── HTTP basic auth passwd. Default: empty.\n\n");
+	printf("    --static <path> ───────────── Path to dir with static files instead of embedded root index page.\n");
+	printf("                                  Symlinks are not supported for security reasons. Default: disabled.\n\n");
+	printf("    -k|--blank <path>  ────────── Path to JPEG file that will be shown when the device is disconnected\n");
+	printf("                                  during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.\n\n");
+	printf("    -K|--last-as-blank <sec>  ─── Show the last frame received from the camera after it was disconnected,\n");
+	printf("                                  but no more than specified time (or endlessly if 0 is specified).\n");
+	printf("                                  If the device has not yet been online, display 'NO SIGNAL' or the image\n");
+	printf("                                  specified by option --blank. Default: disabled.\n\n");
+	printf("    -e|--drop-same-frames <N>  ── Don't send identical frames to clients, but no more than specified number.\n");
+	printf("                                  It can significantly reduce the outgoing traffic, but will increase\n");
+	printf("                                  the CPU loading. Don't use this option with analog signal sources\n");
+	printf("                                  or webcams, it's useless. Default: disabled.\n\n");
+	printf("    -l|--slowdown  ────────────── Slowdown capturing to 1 FPS or less when no stream clients are connected.\n");
+	printf("                                  Useful to reduce CPU consumption. Default: disabled.\n\n");
+	printf("    -R|--fake-resolution <WxH>  ─ Override image resolution for state. Default: disabled.\n\n");
+	printf("    --server-timeout <sec>  ───── Timeout for client connections. Default: %u.\n\n", server->timeout);
+#ifdef WITH_GPIO
+	printf("GPIO options:\n");
+	printf("═════════════\n");
+	printf("    --gpio-prog-running <pin>  ───── Set 1 on GPIO pin while uStreamer is running. Default: disabled.\n\n");
+	printf("    --gpio-stream-online <pin>  ──── Set 1 while streaming. Default: disabled\n\n");
+	printf("    --gpio-has-http-clients <pin>  ─ Set 1 while stream has at least one client. Default: disabled.\n\n");
+	printf("    --gpio-workers-busy-at <pin>  ── Set 1 on (pin + N) while worker with number N has a job.\n");
+	printf("                                     The worker's numbering starts from 0. Default: disabled\n\n");
+#endif
+#if (defined(HAS_PDEATHSIG) || defined(WITH_SETPROCTITLE))
+	printf("Process options:\n");
+	printf("════════════════\n");
+#endif
+#ifdef HAS_PDEATHSIG
+	printf("    --exit-on-parent-death  ─────── Exit the program if the parent process is dead. Default: disabled.\n\n");
+#endif
+#ifdef WITH_SETPROCTITLE
+	printf("    --process-name-prefix <str>  ── Set process name prefix which will be displayed in the process list\n");
+	printf("                                    like '<str>: ustreamer --blah-blah-blah'. Default: disabled.\n\n");
+#endif
+	printf("Logging options:\n");
+	printf("════════════════\n");
+	printf("    --log-level <N>  ──── Verbosity level of messages from 0 (info) to 3 (debug).\n");
+	printf("                          Enabling debugging messages can slow down the program.\n");
+	printf("                          Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).\n");
+	printf("                          Default: %u.\n\n", log_level);
+	printf("    --perf  ───────────── Enable performance messages (same as --log-level=1). Default: disabled.\n\n");
+	printf("    --verbose  ────────── Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n\n");
+	printf("    --debug  ──────────── Enable debug messages and lower (same as --log-level=3). Default: disabled.\n\n");
+	printf("    --force-log-colors  ─ Force color logging. Default: colored if stdout is a TTY.\n\n");
+	printf("    --no-log-colors  ──── Disable color logging. Default: ditto.\n\n");
+	printf("Help options:\n");
+	printf("═════════════\n");
+	printf("    -h|--help  ─────── Print this text and exit.\n\n");
+	printf("    -v|--version  ──── Print version and exit.\n\n");
+	printf("    --features  ────── Print list of supporeted features.\n\n");
+}

src/options.h

@@ -0,0 +1,30 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include "device.h"
+#include "encoder.h"
+#include "http/server.h"
+
+
+int parse_options(int argc, char *argv[], struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server);

src/picture.c

@@ -0,0 +1,96 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "picture.h"
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <assert.h>
+
+#include "tools.h"
+#include "logging.h"
+
+
+struct picture_t *picture_init(void) {
+	struct picture_t *picture;
+
+	A_CALLOC(picture, 1);
+	return picture;
+}
+
+void picture_destroy(struct picture_t *picture) {
+	if (picture->data) {
+		free(picture->data);
+	}
+	free(picture);
+}
+
+size_t picture_get_generous_size(unsigned width, unsigned height) {
+	return ((width * height) << 1) * 2;
+}
+
+void picture_realloc_data(struct picture_t *picture, size_t size) {
+	if (picture->allocated < size) {
+		LOG_DEBUG("Increasing picture 0x%p buffer: %zu -> %zu (+%zu)",
+			picture, picture->allocated, size, size - picture->allocated);
+		A_REALLOC(picture->data, size);
+		picture->allocated = size;
+	}
+}
+
+void picture_set_data(struct picture_t *picture, const unsigned char *data, size_t size) {
+	picture_realloc_data(picture, size);
+	memcpy(picture->data, data, size);
+	picture->used = size;
+}
+
+void picture_append_data(struct picture_t *picture, const unsigned char *data, size_t size) {
+	size_t new_used = picture->used + size;
+
+	picture_realloc_data(picture, new_used);
+	memcpy(picture->data + picture->used, data, size);
+	picture->used = new_used;
+}
+
+void picture_copy(const struct picture_t *src, struct picture_t *dest) {
+	assert(src->allocated);
+
+	picture_set_data(dest, src->data, src->allocated);
+
+#	define COPY(_field) dest->_field = src->_field
+
+	COPY(used);
+
+	COPY(width);
+	COPY(height);
+
+	COPY(grab_time);
+	COPY(encode_begin_time);
+	COPY(encode_end_time);
+
+#	undef COPY
+}
+
+bool picture_compare(const struct picture_t *a, const struct picture_t *b) {
+	return (a->used == b->used && !memcmp(a->data, b->data, b->used));
+}

src/picture.h

@@ -0,0 +1,51 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stddef.h>
+#include <stdbool.h>
+
+
+struct picture_t {
+	unsigned char	*data;
+	size_t			used;
+	size_t			allocated;
+	unsigned		width;
+	unsigned		height;
+	long double		grab_time;
+	long double		encode_begin_time;
+	long double		encode_end_time;
+};
+
+
+struct picture_t *picture_init(void);
+void picture_destroy(struct picture_t *picture);
+
+size_t picture_get_generous_size(unsigned width, unsigned height);
+
+void picture_realloc_data(struct picture_t *picture, size_t size);
+void picture_set_data(struct picture_t *picture, const unsigned char *data, size_t size);
+void picture_append_data(struct picture_t *picture, const unsigned char *data, size_t size);
+
+void picture_copy(const struct picture_t *src, struct picture_t *dest);
+bool picture_compare(const struct picture_t *a, const struct picture_t *b);

src/process.h

@@ -0,0 +1,130 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#if defined(__linux__)
+#	define HAS_PDEATHSIG
+#elif defined(__FreeBSD__)
+#	include <sys/param.h>
+#	if __FreeBSD_version >= 1102000
+#		define HAS_PDEATHSIG
+#	endif
+#endif
+
+
+#ifdef HAS_PDEATHSIG
+#	include <signal.h>
+#	include <unistd.h>
+#endif
+#ifdef WITH_SETPROCTITLE
+#	include <stdlib.h>
+#	include <string.h>
+#	if defined(__linux__)
+#		include <bsd/unistd.h>
+#		include <sys/types.h>
+#	elif (defined(__FreeBSD__) || defined(__DragonFly__))
+#		include <unistd.h>
+#		include <sys/types.h>
+#	elif (defined(__NetBSD__) || defined(__OpenBSD__)) // setproctitle() placed in stdlib.h
+#	else
+#		error setproctitle() not implemented, you can disable it using WITH_SETPROCTITLE=0
+#	endif
+#endif
+#ifdef HAS_PDEATHSIG
+#	if defined(__linux__)
+#		include <sys/prctl.h>
+#	elif defined(__FreeBSD__)
+#		include <sys/procctl.h>
+#	endif
+#endif
+#ifdef WITH_SETPROCTITLE
+#	include "tools.h"
+#endif
+#ifdef HAS_PDEATHSIG
+#	include "logging.h"
+#endif
+
+
+#ifdef WITH_SETPROCTITLE
+extern char **environ;
+#endif
+
+
+#ifdef HAS_PDEATHSIG
+INLINE int process_track_parent_death(void) {
+	int signum = SIGTERM;
+#	if defined(__linux__)
+	int retval = prctl(PR_SET_PDEATHSIG, signum);
+#	elif defined(__FreeBSD__)
+	int retval = procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum);
+#	else
+#		error WTF?
+#	endif
+	if (retval < 0) {
+		LOG_PERROR("Can't set to receive SIGTERM on parent process death");
+		return -1;
+	}
+
+	if (kill(getppid(), 0) < 0) {
+		LOG_PERROR("The parent process is already dead");
+		return -1;
+	}
+
+	return 0;
+}
+#endif
+
+#ifdef WITH_SETPROCTITLE
+#	pragma GCC diagnostic ignored "-Wunused-parameter"
+#	pragma GCC diagnostic push
+INLINE void process_set_name_prefix(int argc, char *argv[], const char *prefix) {
+#	pragma GCC diagnostic pop
+
+	char *cmdline = NULL;
+	size_t allocated = 2048;
+	size_t used = 0;
+	size_t arg_len = 0;
+
+	A_REALLOC(cmdline, allocated);
+	cmdline[0] = '\0';
+
+	for (int index = 0; index < argc; ++index) {
+		arg_len = strlen(argv[index]);
+		if (used + arg_len + 16 >= allocated) {
+			allocated += arg_len + 2048;
+			A_REALLOC(cmdline, allocated);
+		}
+
+		strcat(cmdline, " ");
+		strcat(cmdline, argv[index]);
+		used = strlen(cmdline); // Не считаем вручную, так надежнее
+	}
+
+#	ifdef __linux__
+	setproctitle_init(argc, argv, environ);
+#	endif
+	setproctitle("-%s:%s", prefix, cmdline);
+
+	free(cmdline);
+}
+#endif

src/stream.c

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -19,149 +20,180 @@
 *****************************************************************************/
 
 
+#include "stream.h"
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdatomic.h>
+#include <unistd.h>
 #include <errno.h>
-#include <time.h>
 #include <assert.h>
 
 #include <pthread.h>
 
-#include <sys/select.h>
-#include <linux/videodev2.h>
-
 #include "tools.h"
+#include "threading.h"
 #include "logging.h"
-#include "xioctl.h"
+#include "picture.h"
 #include "device.h"
 #include "encoder.h"
-#include "stream.h"
-
-#include "jpeg/encoder.h"
+#ifdef WITH_GPIO
+#	include "gpio.h"
+#endif
 
 
-static long double _stream_get_fluency_delay(struct device_t *dev, struct workers_pool_t *pool);
-static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index);
+struct _worker_t {
+	pthread_t			tid;
+	unsigned			number;
+	atomic_bool			*proc_stop;
+	atomic_bool			*workers_stop;
 
-static int _stream_init_loop(struct device_t *dev, struct workers_pool_t *pool);
-static int _stream_init(struct device_t *dev, struct workers_pool_t *pool);
+	long double			last_comp_time;
 
-static void _stream_init_workers(struct device_t *dev, struct workers_pool_t *pool);
-static void *_stream_worker_thread(void *v_ctx);
-static void _stream_destroy_workers(struct device_t *dev, struct workers_pool_t *pool);
+	pthread_mutex_t		has_job_mutex;
+	int					buf_index;
+	atomic_bool			has_job;
+	bool				job_timely;
+	bool				job_failed;
+	long double			job_start_time;
+	pthread_cond_t		has_job_cond;
 
-static int _stream_control(struct device_t *dev, const bool enable);
-static int _stream_grab_buffer(struct device_t *dev, struct v4l2_buffer *buf_info);
-static int _stream_release_buffer(struct device_t *dev, struct v4l2_buffer *buf_info);
-static int _stream_handle_event(struct device_t *dev);
+	pthread_mutex_t		*free_workers_mutex;
+	unsigned			*free_workers;
+	pthread_cond_t		*free_workers_cond;
+
+	struct _worker_t	*order_prev;
+	struct _worker_t	*order_next;
+
+	struct device_t		*dev;
+	struct encoder_t	*encoder;
+};
+
+struct _workers_pool_t {
+	unsigned			n_workers;
+	struct _worker_t	*workers;
+	struct _worker_t	*oldest_worker;
+	struct _worker_t	*latest_worker;
+
+	long double			approx_comp_time;
+
+	pthread_mutex_t		free_workers_mutex;
+	unsigned			free_workers;
+	pthread_cond_t		free_workers_cond;
+
+	atomic_bool			workers_stop;
+
+	long double			desired_frames_interval;
+};
+
+
+static struct _workers_pool_t *_stream_init_loop(struct stream_t *stream);
+static struct _workers_pool_t *_stream_init(struct stream_t *stream);
+static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index, unsigned captured_fps);
+
+static struct _workers_pool_t *_workers_pool_init(struct stream_t *stream);
+static void _workers_pool_destroy(struct _workers_pool_t *pool);
+
+static void *_worker_thread(void *v_worker);
+
+static struct _worker_t *_workers_pool_wait(struct _workers_pool_t *pool);
+static void _workers_pool_assign(struct _workers_pool_t *pool, struct _worker_t *ready_worker, unsigned buf_index);
+static long double _workers_pool_get_fluency_delay(struct _workers_pool_t *pool, struct _worker_t *ready_worker);
 
 
 struct stream_t *stream_init(struct device_t *dev, struct encoder_t *encoder) {
+	struct process_t *proc;
 	struct stream_t *stream;
 
+	A_CALLOC(proc, 1);
+	atomic_init(&proc->stop, false);
+	atomic_init(&proc->slowdown, false);
+
 	A_CALLOC(stream, 1);
+	stream->picture = picture_init();
 	stream->dev = dev;
 	stream->encoder = encoder;
-	A_PTHREAD_M_INIT(&stream->mutex);
+	atomic_init(&stream->updated, false);
+	A_MUTEX_INIT(&stream->mutex);
+	stream->proc = proc;
 	return stream;
 }
 
 void stream_destroy(struct stream_t *stream) {
-	A_PTHREAD_M_DESTROY(&stream->mutex);
+	A_MUTEX_DESTROY(&stream->mutex);
+	picture_destroy(stream->picture);
+	free(stream->proc);
 	free(stream);
 }
 
 void stream_loop(struct stream_t *stream) {
-	struct workers_pool_t pool;
-	bool workers_stop;
-
-	MEMSET_ZERO(pool);
-	pool.encoder = stream->encoder;
-	pool.workers_stop = &workers_stop;
+	struct _workers_pool_t *pool;
 
 	LOG_INFO("Using V4L2 device: %s", stream->dev->path);
 	LOG_INFO("Using desired FPS: %u", stream->dev->desired_fps);
 
-	while (_stream_init_loop(stream->dev, &pool) == 0) {
-		struct worker_t *oldest_worker = NULL;
-		struct worker_t *last_worker = NULL;
+	while ((pool = _stream_init_loop(stream)) != NULL) {
 		long double grab_after = 0;
 		unsigned fluency_passed = 0;
+		unsigned captured_fps = 0;
 		unsigned captured_fps_accum = 0;
 		long long captured_fps_second = 0;
 		bool persistent_timeout_reported = false;
 
-		LOG_DEBUG("Allocation memory for stream picture ...");
-		A_CALLOC(stream->picture.data, stream->dev->run->max_picture_size);
-
 		LOG_INFO("Capturing ...");
 
-		while (!stream->dev->stop) {
-			int free_worker_number = -1;
+		LOG_DEBUG("Pre-allocating memory for stream picture ...");
+		picture_realloc_data(stream->picture, picture_get_generous_size(stream->dev->run->width, stream->dev->run->height));
+
+		while (!atomic_load(&stream->proc->stop)) {
+			struct _worker_t *ready_worker;
 
 			SEP_DEBUG('-');
+			LOG_DEBUG("Waiting for worker ...");
 
-			LOG_DEBUG("Waiting for workers ...");
-			A_PTHREAD_M_LOCK(&pool.free_workers_mutex);
-			A_PTHREAD_C_WAIT_TRUE(pool.free_workers, &pool.free_workers_cond, &pool.free_workers_mutex);
-			A_PTHREAD_M_UNLOCK(&pool.free_workers_mutex);
+			ready_worker = _workers_pool_wait(pool);
 
-			if (oldest_worker && !oldest_worker->has_job && oldest_worker->ctx.buf_index >= 0) {
-				if (oldest_worker->job_failed) {
-					break;
+			if (!ready_worker->job_failed) {
+				if (ready_worker->job_timely) {
+					_stream_expose_picture(stream, ready_worker->buf_index, captured_fps);
+					LOG_PERF("##### Encoded picture exposed; worker=%u", ready_worker->number);
+				} else {
+					LOG_PERF("----- Encoded picture dropped; worker=%u", ready_worker->number);
 				}
-
-				_stream_expose_picture(stream, oldest_worker->ctx.buf_index);
-
-				free_worker_number = oldest_worker->ctx.number;
-				oldest_worker = oldest_worker->order_next;
-
-				LOG_PERF("##### Raw frame accepted; worker = %u", free_worker_number);
 			} else {
-				for (unsigned number = 0; number < stream->dev->n_workers; ++number) {
-					if (!pool.workers[number].has_job && (free_worker_number == -1
-						|| pool.workers[free_worker_number].job_start_time < pool.workers[number].job_start_time
-					)) {
-						free_worker_number = number;
-						break;
-					}
-				}
-
-				assert(free_worker_number >= 0);
-				assert(!pool.workers[free_worker_number].has_job);
-
-				LOG_PERF("----- Raw frame dropped;  worker = %u", free_worker_number);
-			}
-
-			if (stream->dev->stop) {
 				break;
 			}
 
-#	define INIT_FD_SET(_set) \
-		fd_set _set; FD_ZERO(&_set); FD_SET(stream->dev->run->fd, &_set);
-			INIT_FD_SET(read_fds);
-			INIT_FD_SET(write_fds);
-			INIT_FD_SET(error_fds);
-#	undef INIT_FD_SET
+			if (atomic_load(&stream->proc->stop)) {
+				break;
+			}
 
-			struct timeval timeout;
-			timeout.tv_sec = stream->dev->timeout;
-			timeout.tv_usec = 0;
+			if (atomic_load(&stream->proc->slowdown)) {
+				usleep(1000000);
+			}
 
-			LOG_DEBUG("Calling select() on video device ...");
-			int retval = select(stream->dev->run->fd + 1, &read_fds, &write_fds, &error_fds, &timeout);
-			LOG_DEBUG("Device select() --> %d", retval);
+			bool has_read;
+			bool has_write;
+			bool has_error;
+			int selected = device_select(stream->dev, &has_read, &has_write, &has_error);
 
-			if (retval < 0) {
+			if (selected < 0) {
 				if (errno != EINTR) {
 					LOG_PERROR("Mainloop select() error");
 					break;
 				}
 
-			} else if (retval == 0) {
+			} else if (selected == 0) {
+#				ifdef WITH_GPIO
+				GPIO_SET_LOW(stream_online);
+#				endif
+
 				if (stream->dev->persistent) {
 					if (!persistent_timeout_reported) {
 						LOG_ERROR("Mainloop select() timeout, polling ...")
 						persistent_timeout_reported = true;
 					}
+
 					continue;
 				} else {
 					LOG_ERROR("Mainloop select() timeout");
@@ -171,395 +203,360 @@ void stream_loop(struct stream_t *stream) {
 			} else {
 				persistent_timeout_reported = false;
 
-				if (FD_ISSET(stream->dev->run->fd, &read_fds)) {
+				if (has_read) {
 					LOG_DEBUG("Frame is ready");
 
-					struct v4l2_buffer buf_info;
+#					ifdef WITH_GPIO
+					GPIO_SET_HIGH(stream_online);
+#					endif
+
+					int buf_index;
 					long double now = get_now_monotonic();
 					long long now_second = floor_ms(now);
 
-					if (_stream_grab_buffer(stream->dev, &buf_info) < 0) {
+					if ((buf_index = device_grab_buffer(stream->dev)) < 0) {
 						break;
 					}
-					stream->dev->run->pictures[buf_info.index].grab_time = now;
 
 					// Workaround for broken, corrupted frames:
 					// Under low light conditions corrupted frames may get captured.
 					// The good thing is such frames are quite small compared to the regular pictures.
 					// For example a VGA (640x480) webcam picture is normally >= 8kByte large,
 					// corrupted frames are smaller.
-					if (buf_info.bytesused < stream->dev->min_frame_size) {
-						LOG_DEBUG("Dropping too small frame sized %u bytes, assuming it as broken", buf_info.bytesused);
+					if (stream->dev->run->hw_buffers[buf_index].used < stream->dev->min_frame_size) {
+						LOG_DEBUG("Dropped too small frame sized %zu bytes, assuming it was broken",
+							stream->dev->run->hw_buffers[buf_index].used);
 						goto pass_frame;
 					}
 
 					{
 						if (now < grab_after) {
 							fluency_passed += 1;
-							LOG_VERBOSE("Passed %u frames for fluency: now=%.03Lf; grab_after=%.03Lf", fluency_passed, now, grab_after);
+							LOG_VERBOSE("Passed %u frames for fluency: now=%.03Lf, grab_after=%.03Lf", fluency_passed, now, grab_after);
 							goto pass_frame;
 						}
 						fluency_passed = 0;
 
 						if (now_second != captured_fps_second) {
-							stream->captured_fps = captured_fps_accum;
+							captured_fps = captured_fps_accum;
 							captured_fps_accum = 0;
 							captured_fps_second = now_second;
-							LOG_PERF("Oldest worker complete, Captured-FPS = %u", stream->captured_fps);
+							LOG_PERF_FPS("A new second has come; captured_fps=%u", captured_fps);
 						}
 						captured_fps_accum += 1;
 
-						long double fluency_delay = _stream_get_fluency_delay(stream->dev, &pool);
+						long double fluency_delay = _workers_pool_get_fluency_delay(pool, ready_worker);
 
 						grab_after = now + fluency_delay;
-						LOG_VERBOSE("Fluency: delay=%.03Lf; grab_after=%.03Lf", fluency_delay, grab_after);
+						LOG_VERBOSE("Fluency: delay=%.03Lf, grab_after=%.03Lf", fluency_delay, grab_after);
 					}
 
-					LOG_DEBUG("Grabbed a new frame to buffer %u", buf_info.index);
-					pool.workers[free_worker_number].ctx.buf_info = buf_info;
-
-					if (!oldest_worker) {
-						oldest_worker = &pool.workers[free_worker_number];
-						last_worker = oldest_worker;
-					} else {
-						if (pool.workers[free_worker_number].order_next) {
-							pool.workers[free_worker_number].order_next->order_prev = pool.workers[free_worker_number].order_prev;
-						}
-						if (pool.workers[free_worker_number].order_prev) {
-							pool.workers[free_worker_number].order_prev->order_next = pool.workers[free_worker_number].order_next;
-						}
-						pool.workers[free_worker_number].order_prev = last_worker;
-						last_worker->order_next = &pool.workers[free_worker_number];
-						last_worker = &pool.workers[free_worker_number];
-					}
-					last_worker->order_next = NULL;
-
-					A_PTHREAD_M_LOCK(&pool.workers[free_worker_number].has_job_mutex);
-					pool.workers[free_worker_number].ctx.buf_index = buf_info.index;
-					pool.workers[free_worker_number].has_job = true;
-					A_PTHREAD_M_UNLOCK(&pool.workers[free_worker_number].has_job_mutex);
-					A_PTHREAD_C_SIGNAL(&pool.workers[free_worker_number].has_job_cond);
-
-					A_PTHREAD_M_LOCK(&pool.free_workers_mutex);
-					pool.free_workers -= 1;
-					A_PTHREAD_M_UNLOCK(&pool.free_workers_mutex);
+					_workers_pool_assign(pool, ready_worker, buf_index);
 
 					goto next_handlers; // Поток сам освободит буфер
 
 					pass_frame:
 
-					if (_stream_release_buffer(stream->dev, &buf_info) < 0) {
+					if (device_release_buffer(stream->dev, buf_index) < 0) {
 						break;
 					}
 				}
 
 				next_handlers:
 
-				if (FD_ISSET(stream->dev->run->fd, &write_fds)) {
+				if (has_write) {
 					LOG_ERROR("Got unexpected writing event, seems device was disconnected");
 					break;
 				}
 
-				if (FD_ISSET(stream->dev->run->fd, &error_fds)) {
+				if (has_error) {
 					LOG_INFO("Got V4L2 event");
-					if (_stream_handle_event(stream->dev) < 0) {
+					if (device_consume_event(stream->dev) < 0) {
 						break;
 					}
 				}
 			}
 		}
 
-		A_PTHREAD_M_LOCK(&stream->mutex);
-		stream->picture.size = 0; // On stream offline
-		free(stream->picture.data);
-		stream->width = 0;
-		stream->height = 0;
-		stream->updated = true;
-		A_PTHREAD_M_UNLOCK(&stream->mutex);
-	}
+		A_MUTEX_LOCK(&stream->mutex);
+		stream->online = false;
+		atomic_store(&stream->updated, true);
+		A_MUTEX_UNLOCK(&stream->mutex);
 
-	_stream_destroy_workers(stream->dev, &pool);
-	_stream_control(stream->dev, false);
-	device_close(stream->dev);
+		_workers_pool_destroy(pool);
+		device_switch_capturing(stream->dev, false);
+		device_close(stream->dev);
+
+#		ifdef WITH_GPIO
+		GPIO_SET_LOW(stream_online);
+#		endif
+	}
 }
 
 void stream_loop_break(struct stream_t *stream) {
-	stream->dev->stop = 1;
+	atomic_store(&stream->proc->stop, true);
 }
 
-static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index) {
-#	define PICTURE(_next) stream->dev->run->pictures[buf_index]._next
-
-	A_PTHREAD_M_LOCK(&stream->mutex);
-
-	stream->picture.size = PICTURE(size);
-	stream->picture.allocated = PICTURE(allocated);
-	memcpy(
-		stream->picture.data, PICTURE(data),
-		stream->picture.size * sizeof(*stream->picture.data)
-	);
-	stream->picture.grab_time = PICTURE(grab_time);
-	stream->picture.encode_begin_time = PICTURE(encode_begin_time);
-	stream->picture.encode_end_time = PICTURE(encode_end_time);
-
-	stream->width = stream->dev->run->width;
-	stream->height = stream->dev->run->height;
-	stream->updated = true;
-
-	A_PTHREAD_M_UNLOCK(&stream->mutex);
-
-#	undef PICTURE
+void stream_switch_slowdown(struct stream_t *stream, bool slowdown) {
+	atomic_store(&stream->proc->slowdown, slowdown);
 }
 
-static long double _stream_get_fluency_delay(struct device_t *dev, struct workers_pool_t *pool) {
-	long double sum_comp_time = 0;
-	long double avg_comp_time;
-	long double min_delay;
-	long double soft_delay;
+static struct _workers_pool_t *_stream_init_loop(struct stream_t *stream) {
+	struct _workers_pool_t *pool = NULL;
 
-	for (unsigned number = 0; number < dev->n_workers; ++number) {
-		A_PTHREAD_M_LOCK(&pool->workers[number].last_comp_time_mutex);
-		if (pool->workers[number].last_comp_time > 0) {
-			sum_comp_time += pool->workers[number].last_comp_time;
-		}
-		A_PTHREAD_M_UNLOCK(&pool->workers[number].last_comp_time_mutex);
-	}
-	avg_comp_time = sum_comp_time / dev->n_workers; // Среднее время работы воркеров
+	LOG_DEBUG("%s: stream->proc->stop=%d", __FUNCTION__, atomic_load(&stream->proc->stop));
 
-	min_delay = avg_comp_time / dev->n_workers; // Среднее время работы размазывается на N воркеров
+	while (!atomic_load(&stream->proc->stop)) {
+		SEP_INFO('=');
 
-	if (dev->desired_fps > 0 && min_delay > 0) {
-		// Искусственное время задержки на основе желаемого FPS, если включен --desired-fps
-		soft_delay = ((long double) 1) / dev->desired_fps - sum_comp_time;
-		return (min_delay > soft_delay ? min_delay : soft_delay);
-	}
-
-	return min_delay;
-}
-
-static int _stream_init_loop(struct device_t *dev, struct workers_pool_t *pool) {
-	int retval = -1;
-
-	LOG_DEBUG("%s: *dev->stop = %d", __FUNCTION__, dev->stop);
-	while (!dev->stop) {
-		if ((retval = _stream_init(dev, pool)) < 0) {
-			LOG_INFO("Sleeping %u seconds before new stream init ...", dev->error_delay);
-			sleep(dev->error_delay);
+		if ((pool = _stream_init(stream)) == NULL) {
+			LOG_INFO("Sleeping %u seconds before new stream init ...", stream->dev->error_delay);
+			sleep(stream->dev->error_delay);
 		} else {
 			break;
 		}
 	}
-	return retval;
+	return pool;
 }
 
-static int _stream_init(struct device_t *dev, struct workers_pool_t *pool) {
-	SEP_INFO('=');
-
-	_stream_destroy_workers(dev, pool);
-	_stream_control(dev, false);
-	device_close(dev);
-
-	if (device_open(dev) < 0) {
+static struct _workers_pool_t *_stream_init(struct stream_t *stream) {
+	if (device_open(stream->dev) < 0) {
 		goto error;
 	}
-	if (_stream_control(dev, true) < 0) {
+	if (device_switch_capturing(stream->dev, true) < 0) {
 		goto error;
 	}
 
-	encoder_prepare_live(pool->encoder, dev);
-
-	_stream_init_workers(dev, pool);
-
-	return 0;
+	encoder_prepare(stream->encoder, stream->dev);
+	return _workers_pool_init(stream);
 
 	error:
-		device_close(dev);
-		return -1;
+		device_close(stream->dev);
+		return NULL;
 }
 
-static void _stream_init_workers(struct device_t *dev, struct workers_pool_t *pool) {
-	LOG_INFO("Spawning %u workers ...", dev->n_workers);
+static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index, unsigned captured_fps) {
+	A_MUTEX_LOCK(&stream->mutex);
 
-	*pool->workers_stop = false;
-	A_CALLOC(pool->workers, dev->n_workers);
+	picture_copy(stream->dev->run->pictures[buf_index], stream->picture);
 
-	A_PTHREAD_M_INIT(&pool->free_workers_mutex);
-	A_PTHREAD_C_INIT(&pool->free_workers_cond);
+	stream->online = true;
+	stream->captured_fps = captured_fps;
+	atomic_store(&stream->updated, true);
+
+	A_MUTEX_UNLOCK(&stream->mutex);
+}
+
+static struct _workers_pool_t *_workers_pool_init(struct stream_t *stream) {
+	struct _workers_pool_t *pool;
+
+	LOG_INFO("Creating pool with %u workers ...", stream->dev->run->n_workers);
+
+	A_CALLOC(pool, 1);
+
+	pool->n_workers = stream->dev->run->n_workers;
+	A_CALLOC(pool->workers, pool->n_workers);
+
+	A_MUTEX_INIT(&pool->free_workers_mutex);
+	A_COND_INIT(&pool->free_workers_cond);
+
+	atomic_init(&pool->workers_stop, false);
+
+	if (stream->dev->desired_fps > 0) {
+		pool->desired_frames_interval = (long double)1 / stream->dev->desired_fps;
+	}
+
+	for (unsigned number = 0; number < pool->n_workers; ++number) {
+#		define WORKER(_next) pool->workers[number]._next
+
+		A_MUTEX_INIT(&WORKER(has_job_mutex));
+		atomic_init(&WORKER(has_job), false);
+		A_COND_INIT(&WORKER(has_job_cond));
+
+		WORKER(number) = number;
+		WORKER(proc_stop) = &stream->proc->stop;
+		WORKER(workers_stop) = &pool->workers_stop;
+
+		WORKER(free_workers_mutex) = &pool->free_workers_mutex;
+		WORKER(free_workers) = &pool->free_workers;
+		WORKER(free_workers_cond) = &pool->free_workers_cond;
+
+		WORKER(dev) = stream->dev;
+		WORKER(encoder) = stream->encoder;
+
+		A_THREAD_CREATE(&WORKER(tid), _worker_thread, (void *)&(pool->workers[number]));
 
-	for (unsigned number = 0; number < dev->n_workers; ++number) {
 		pool->free_workers += 1;
 
-		A_PTHREAD_M_INIT(&pool->workers[number].has_job_mutex);
-		A_PTHREAD_C_INIT(&pool->workers[number].has_job_cond);
-
-#	define CTX(_next) pool->workers[number].ctx._next
-
-		CTX(number)			= number;
-		CTX(dev)			= dev;
-		CTX(dev_stop)		= (sig_atomic_t *volatile)&dev->stop;
-		CTX(workers_stop)	= pool->workers_stop;
-
-		CTX(encoder) = pool->encoder;
-
-		CTX(last_comp_time_mutex)	= &pool->workers[number].last_comp_time_mutex;
-		CTX(last_comp_time)			= &pool->workers[number].last_comp_time;
-
-		CTX(has_job_mutex)	= &pool->workers[number].has_job_mutex;
-		CTX(has_job)		= &pool->workers[number].has_job;
-		CTX(job_failed)		= &pool->workers[number].job_failed;
-		CTX(job_start_time)	= &pool->workers[number].job_start_time;
-		CTX(has_job_cond)	= &pool->workers[number].has_job_cond;
-
-		CTX(free_workers_mutex)	= &pool->free_workers_mutex;
-		CTX(free_workers)		= &pool->free_workers;
-		CTX(free_workers_cond)	= &pool->free_workers_cond;
-
-#	undef CTX
-
-		A_PTHREAD_CREATE(&pool->workers[number].tid, _stream_worker_thread, (void *)&pool->workers[number].ctx);
+#		undef WORKER
 	}
+	return pool;
 }
 
-static void *_stream_worker_thread(void *v_ctx) {
-	struct worker_context_t *ctx = (struct worker_context_t *)v_ctx;
+static void _workers_pool_destroy(struct _workers_pool_t *pool) {
+	LOG_INFO("Destroying workers pool ...");
 
-	LOG_DEBUG("Hello! I am a worker #%u ^_^", ctx->number);
+	atomic_store(&pool->workers_stop, true);
+	for (unsigned number = 0; number < pool->n_workers; ++number) {
+#		define WORKER(_next) pool->workers[number]._next
 
-	while (!*ctx->dev_stop && !*ctx->workers_stop) {
-		LOG_DEBUG("Worker %u waiting for a new job ...", ctx->number);
-		A_PTHREAD_M_LOCK(ctx->has_job_mutex);
-		A_PTHREAD_C_WAIT_TRUE(*ctx->has_job, ctx->has_job_cond, ctx->has_job_mutex);
-		A_PTHREAD_M_UNLOCK(ctx->has_job_mutex);
+		A_MUTEX_LOCK(&WORKER(has_job_mutex));
+		atomic_store(&WORKER(has_job), true); // Final job: die
+		A_MUTEX_UNLOCK(&WORKER(has_job_mutex));
+		A_COND_SIGNAL(&WORKER(has_job_cond));
 
-#	define PICTURE(_next) ctx->dev->run->pictures[ctx->buf_index]._next
+		A_THREAD_JOIN(WORKER(tid));
+		A_MUTEX_DESTROY(&WORKER(has_job_mutex));
+		A_COND_DESTROY(&WORKER(has_job_cond));
 
-		if (!*ctx->workers_stop) {
-			LOG_DEBUG("Worker %u compressing JPEG from buffer %u ...", ctx->number, ctx->buf_index);
-
-			PICTURE(encode_begin_time) = get_now_monotonic();
-			if (encoder_compress_buffer(ctx->encoder, ctx->dev, ctx->number, ctx->buf_index) < 0) {
-				*ctx->job_failed = true;
-			}
-			PICTURE(encode_end_time) = get_now_monotonic();
-
-			if (_stream_release_buffer(ctx->dev, &ctx->buf_info) == 0) {
-				*ctx->job_start_time = PICTURE(encode_begin_time);
-				*ctx->has_job = false;
-
-				long double last_comp_time = PICTURE(encode_end_time) - *ctx->job_start_time;
-
-				A_PTHREAD_M_LOCK(ctx->last_comp_time_mutex);
-				*ctx->last_comp_time = last_comp_time;
-				A_PTHREAD_M_UNLOCK(ctx->last_comp_time_mutex);
-
-				LOG_VERBOSE(
-					"Compressed JPEG size=%ld; time=%0.3Lf; worker=%u; buffer=%u",
-					PICTURE(size), last_comp_time, ctx->number, ctx->buf_index
-				);
-			} else {
-				*ctx->job_failed = true;
-				*ctx->has_job = false;
-			}
-		}
-
-#	undef PICTURE
-
-		A_PTHREAD_M_LOCK(ctx->free_workers_mutex);
-		*ctx->free_workers += 1;
-		A_PTHREAD_M_UNLOCK(ctx->free_workers_mutex);
-		A_PTHREAD_C_SIGNAL(ctx->free_workers_cond);
+#		undef WORKER
 	}
 
-	LOG_DEBUG("Bye-bye (worker %u)", ctx->number);
+	A_MUTEX_DESTROY(&pool->free_workers_mutex);
+	A_COND_DESTROY(&pool->free_workers_cond);
+
+	free(pool->workers);
+	free(pool);
+}
+
+static void *_worker_thread(void *v_worker) {
+	struct _worker_t *worker = (struct _worker_t *)v_worker;
+
+	A_THREAD_RENAME("worker-%u", worker->number);
+	LOG_DEBUG("Hello! I am a worker #%u ^_^", worker->number);
+
+#	ifdef WITH_GPIO
+	GPIO_INIT_PIN(workers_busy_at, worker->number);
+#	endif
+
+	while (!atomic_load(worker->proc_stop) && !atomic_load(worker->workers_stop)) {
+		LOG_DEBUG("Worker %u waiting for a new job ...", worker->number);
+
+#		ifdef WITH_GPIO
+		GPIO_SET_LOW_AT(workers_busy_at, worker->number);
+#		endif
+
+		A_MUTEX_LOCK(&worker->has_job_mutex);
+		A_COND_WAIT_TRUE(atomic_load(&worker->has_job), &worker->has_job_cond, &worker->has_job_mutex);
+		A_MUTEX_UNLOCK(&worker->has_job_mutex);
+
+		if (!atomic_load(worker->workers_stop)) {
+#			define PICTURE(_next) worker->dev->run->pictures[worker->buf_index]->_next
+
+			LOG_DEBUG("Worker %u compressing JPEG from buffer %u ...", worker->number, worker->buf_index);
+
+#			ifdef WITH_GPIO
+			GPIO_SET_HIGH_AT(workers_busy_at, worker->number);
+#			endif
+
+			if (encoder_compress_buffer(worker->encoder, worker->dev, worker->number, worker->buf_index) < 0) {
+				worker->job_failed = false;
+			}
+
+			if (device_release_buffer(worker->dev, worker->buf_index) == 0) {
+				worker->job_start_time = PICTURE(encode_begin_time);
+				atomic_store(&worker->has_job, false);
+
+				worker->last_comp_time = PICTURE(encode_end_time) - worker->job_start_time;
+
+				LOG_VERBOSE("Compressed new JPEG: size=%zu, time=%0.3Lf, worker=%u, buffer=%u",
+					PICTURE(used), worker->last_comp_time, worker->number, worker->buf_index);
+			} else {
+				worker->job_failed = true;
+				atomic_store(&worker->has_job, false);
+			}
+
+#			undef PICTURE
+		}
+
+		A_MUTEX_LOCK(worker->free_workers_mutex);
+		*worker->free_workers += 1;
+		A_MUTEX_UNLOCK(worker->free_workers_mutex);
+		A_COND_SIGNAL(worker->free_workers_cond);
+	}
+
+	LOG_DEBUG("Bye-bye (worker %u)", worker->number);
+#	ifdef WITH_GPIO
+	GPIO_SET_LOW_AT(workers_busy_at, worker->number);
+#	endif
 	return NULL;
 }
 
-static void _stream_destroy_workers(struct device_t *dev, struct workers_pool_t *pool) {
-	if (pool->workers) {
-		LOG_INFO("Destroying workers ...");
+static struct _worker_t *_workers_pool_wait(struct _workers_pool_t *pool) {
+	struct _worker_t *ready_worker = NULL;
 
-		*pool->workers_stop = true;
-		for (unsigned number = 0; number < dev->n_workers; ++number) {
-			A_PTHREAD_M_LOCK(&pool->workers[number].has_job_mutex);
-			pool->workers[number].has_job = true; // Final job: die
-			A_PTHREAD_M_UNLOCK(&pool->workers[number].has_job_mutex);
-			A_PTHREAD_C_SIGNAL(&pool->workers[number].has_job_cond);
+	A_MUTEX_LOCK(&pool->free_workers_mutex);
+	A_COND_WAIT_TRUE(pool->free_workers, &pool->free_workers_cond, &pool->free_workers_mutex);
+	A_MUTEX_UNLOCK(&pool->free_workers_mutex);
 
-			A_PTHREAD_JOIN(pool->workers[number].tid);
-			A_PTHREAD_M_DESTROY(&pool->workers[number].has_job_mutex);
-			A_PTHREAD_C_DESTROY(&pool->workers[number].has_job_cond);
-		}
-
-		A_PTHREAD_M_DESTROY(&pool->free_workers_mutex);
-		A_PTHREAD_C_DESTROY(&pool->free_workers_cond);
-
-		free(pool->workers);
-	}
-	pool->free_workers = 0;
-	pool->workers = NULL;
-}
-
-static int _stream_control(struct device_t *dev, const bool enable) {
-	if (enable != dev->run->capturing) {
-		enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-		LOG_DEBUG("Calling ioctl(%s) ...", (enable ? "VIDIOC_STREAMON" : "VIDIOC_STREAMOFF"));
-		if (xioctl(dev->run->fd, (enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
-			LOG_PERROR("Unable to %s capturing", (enable ? "start" : "stop"));
-			if (enable) {
-				return -1;
+	if (pool->oldest_worker && !atomic_load(&pool->oldest_worker->has_job) && pool->oldest_worker->buf_index >= 0) {
+		ready_worker = pool->oldest_worker;
+		ready_worker->job_timely = true;
+		pool->oldest_worker = pool->oldest_worker->order_next;
+	} else {
+		for (unsigned number = 0; number < pool->n_workers; ++number) {
+			if (
+				!atomic_load(&pool->workers[number].has_job) && (
+					ready_worker == NULL
+					|| ready_worker->job_start_time < pool->workers[number].job_start_time
+				)
+			) {
+				ready_worker = &pool->workers[number];
+				break;
 			}
 		}
-
-		dev->run->capturing = enable;
-		LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
+		assert(ready_worker != NULL);
+		ready_worker->job_timely = false; // Освободился воркер, получивший задание позже (или самый первый при самом первом захвате)
 	}
-    return 0;
+	return ready_worker;
 }
 
-static int _stream_grab_buffer(struct device_t *dev, struct v4l2_buffer *buf_info) {
-	MEMSET_ZERO_PTR(buf_info);
-	buf_info->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	buf_info->memory = V4L2_MEMORY_MMAP;
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_DQBUF) ...");
-	if (xioctl(dev->run->fd, VIDIOC_DQBUF, buf_info) < 0) {
-		LOG_PERROR("Unable to dequeue buffer");
-		return -1;
-	}
-
-	LOG_DEBUG("Got a new frame in buffer index=%u; bytesused=%u", buf_info->index, buf_info->bytesused);
-	if (buf_info->index >= dev->run->n_buffers) {
-		LOG_ERROR("Got invalid buffer index=%u; nbuffers=%u", buf_info->index, dev->run->n_buffers);
-		return -1;
-	}
-	return 0;
-}
-
-static int _stream_release_buffer(struct device_t *dev, struct v4l2_buffer *buf_info) {
-	LOG_DEBUG("Calling ioctl(VIDIOC_QBUF) ...");
-	if (xioctl(dev->run->fd, VIDIOC_QBUF, buf_info) < 0) {
-		LOG_PERROR("Unable to requeue buffer");
-		return -1;
-	}
-	return 0;
-}
-
-static int _stream_handle_event(struct device_t *dev) {
-	struct v4l2_event event;
-
-	LOG_DEBUG("Calling ioctl(VIDIOC_DQEVENT) ...");
-	if (!xioctl(dev->run->fd, VIDIOC_DQEVENT, &event)) {
-		switch (event.type) {
-			case V4L2_EVENT_SOURCE_CHANGE:
-				LOG_INFO("Got V4L2_EVENT_SOURCE_CHANGE: source changed");
-				return -1;
-			case V4L2_EVENT_EOS:
-				LOG_INFO("Got V4L2_EVENT_EOS: end of stream (ignored)");
-				return 0;
-		}
+static void _workers_pool_assign(struct _workers_pool_t *pool, struct _worker_t *ready_worker, unsigned buf_index) {
+	if (pool->oldest_worker == NULL) {
+		pool->oldest_worker = ready_worker;
+		pool->latest_worker = pool->oldest_worker;
 	} else {
-		LOG_PERROR("Got some V4L2 device event, but where is it? ");
+		if (ready_worker->order_next) {
+			ready_worker->order_next->order_prev = ready_worker->order_prev;
+		}
+		if (ready_worker->order_prev) {
+			ready_worker->order_prev->order_next = ready_worker->order_next;
+		}
+		ready_worker->order_prev = pool->latest_worker;
+		pool->latest_worker->order_next = ready_worker;
+		pool->latest_worker = ready_worker;
 	}
-	return 0;
+	pool->latest_worker->order_next = NULL;
+
+	A_MUTEX_LOCK(&ready_worker->has_job_mutex);
+	ready_worker->buf_index = buf_index;
+	atomic_store(&ready_worker->has_job, true);
+	A_MUTEX_UNLOCK(&ready_worker->has_job_mutex);
+	A_COND_SIGNAL(&ready_worker->has_job_cond);
+
+	A_MUTEX_LOCK(&pool->free_workers_mutex);
+	pool->free_workers -= 1;
+	A_MUTEX_UNLOCK(&pool->free_workers_mutex);
+
+	LOG_DEBUG("Assigned new frame in buffer %u to worker %u", buf_index, ready_worker->number);
+}
+
+static long double _workers_pool_get_fluency_delay(struct _workers_pool_t *pool, struct _worker_t *ready_worker) {
+	long double approx_comp_time;
+	long double min_delay;
+
+	approx_comp_time = pool->approx_comp_time * 0.9 + ready_worker->last_comp_time * 0.1;
+
+	LOG_VERBOSE("Correcting approx_comp_time: %.3Lf -> %.3Lf (last_comp_time=%.3Lf)",
+		pool->approx_comp_time, approx_comp_time, ready_worker->last_comp_time);
+
+	pool->approx_comp_time = approx_comp_time;
+
+	min_delay = pool->approx_comp_time / pool->n_workers; // Среднее время работы размазывается на N воркеров
+
+	if (pool->desired_frames_interval > 0 && min_delay > 0 && pool->desired_frames_interval > min_delay) {
+		// Искусственное время задержки на основе желаемого FPS, если включен --desired-fps
+		return pool->desired_frames_interval;
+	}
+	return min_delay;
 }

src/stream.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -22,73 +23,28 @@
 #pragma once
 
 #include <stdbool.h>
-#include <signal.h>
+#include <stdatomic.h>
 
 #include <pthread.h>
 
+#include "picture.h"
 #include "device.h"
 #include "encoder.h"
 
 
-struct worker_context_t {
-	unsigned			number;
-	struct device_t		*dev;
-	int					buf_index;
-	struct v4l2_buffer	buf_info;
-	sig_atomic_t		*volatile dev_stop;
-	bool				*workers_stop;
-
-	struct encoder_t	*encoder;
-
-	pthread_mutex_t		*last_comp_time_mutex;
-	long double			*last_comp_time;
-
-	pthread_mutex_t		*has_job_mutex;
-	bool				*has_job;
-	bool				*job_failed;
-	long double			*job_start_time;
-	pthread_cond_t		*has_job_cond;
-
-	pthread_mutex_t		*free_workers_mutex;
-	unsigned			*free_workers;
-	pthread_cond_t		*free_workers_cond;
-};
-
-struct worker_t {
-	struct worker_context_t	ctx;
-	pthread_t				tid;
-
-	pthread_mutex_t			last_comp_time_mutex;
-	long double				last_comp_time;
-
-	pthread_mutex_t			has_job_mutex;
-	bool					has_job;
-	bool					job_failed;
-	long double				job_start_time;
-	pthread_cond_t			has_job_cond;
-
-	struct worker_t			*order_prev;
-	struct worker_t			*order_next;
-};
-
-struct workers_pool_t {
-	struct worker_t		*workers;
-	bool				*workers_stop;
-
-	pthread_mutex_t		free_workers_mutex;
-	unsigned			free_workers;
-	pthread_cond_t		free_workers_cond;
-
-	struct encoder_t	*encoder;
+struct process_t {
+	atomic_bool stop;
+	atomic_bool slowdown;
 };
 
 struct stream_t {
-	struct picture_t	picture;
-	unsigned			width;
-	unsigned			height;
+	struct picture_t	*picture;
+	bool				online;
 	unsigned			captured_fps;
-	bool				updated;
+	atomic_bool			updated;
 	pthread_mutex_t		mutex;
+
+	struct process_t	*proc;
 	struct device_t		*dev;
 	struct encoder_t	*encoder;
 };
@@ -99,3 +55,4 @@ void stream_destroy(struct stream_t *stream);
 
 void stream_loop(struct stream_t *stream);
 void stream_loop_break(struct stream_t *stream);
+void stream_switch_slowdown(struct stream_t *stream, bool slowdown);

src/threading.h

@@ -0,0 +1,109 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <stdio.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+#include <pthread.h>
+#ifdef WITH_PTHREAD_NP
+#	if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+#		include <pthread_np.h>
+#		include <sys/param.h>
+#	endif
+#endif
+
+#include "tools.h"
+
+
+#ifdef PTHREAD_MAX_NAMELEN_NP
+#	define MAX_THREAD_NAME PTHREAD_MAX_NAMELEN_NP
+#else
+#	define MAX_THREAD_NAME 16
+#endif
+
+#define A_THREAD_CREATE(_tid, _func, _arg)	assert(!pthread_create(_tid, NULL, _func, _arg))
+#define A_THREAD_JOIN(_tid)					assert(!pthread_join(_tid, NULL))
+
+#ifdef WITH_PTHREAD_NP
+#	define A_THREAD_RENAME(_fmt, ...) { \
+			char _buf[MAX_THREAD_NAME] = {0}; \
+			assert(snprintf(_buf, MAX_THREAD_NAME, _fmt, ##__VA_ARGS__) > 0); \
+			thread_set_name(_buf); \
+		}
+#else
+#	define A_THREAD_RENAME(_fmt, ...)
+#endif
+
+#define A_MUTEX_INIT(_mutex)	assert(!pthread_mutex_init(_mutex, NULL))
+#define A_MUTEX_DESTROY(_mutex)	assert(!pthread_mutex_destroy(_mutex))
+#define A_MUTEX_LOCK(_mutex)	assert(!pthread_mutex_lock(_mutex))
+#define A_MUTEX_UNLOCK(_mutex)	assert(!pthread_mutex_unlock(_mutex))
+
+#define A_COND_INIT(_cond)		assert(!pthread_cond_init(_cond, NULL))
+#define A_COND_DESTROY(_cond)	assert(!pthread_cond_destroy(_cond))
+#define A_COND_SIGNAL(...)		assert(!pthread_cond_signal(__VA_ARGS__))
+#define A_COND_WAIT_TRUE(_var, _cond, _mutex) { while(!_var) assert(!pthread_cond_wait(_cond, _mutex)); }
+
+
+#ifdef WITH_PTHREAD_NP
+INLINE void thread_set_name(const char *name) {
+#	if defined(__linux__)
+	pthread_setname_np(pthread_self(), name);
+#	elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+	pthread_set_name_np(pthread_self(), name);
+#	elif defined(__NetBSD__)
+	pthread_setname_np(pthread_self(), "%s", (void *)name);
+#	else
+#		error thread_set_name() not implemented, you can disable it using WITH_PTHREAD_NP=0
+#	endif
+}
+#endif
+
+INLINE void thread_get_name(char *name) { // Always required for logging
+#ifdef WITH_PTHREAD_NP
+	int retval = -1;
+#	if defined(__linux__) || defined (__NetBSD__)
+	retval = pthread_getname_np(pthread_self(), name, MAX_THREAD_NAME);
+#	elif \
+		(defined(__FreeBSD__) && defined(__FreeBSD_version) && __FreeBSD_version >= 1103500) \
+		|| (defined(__OpenBSD__) && defined(OpenBSD) && OpenBSD >= 201905) \
+		|| defined(__DragonFly__)
+	pthread_get_name_np(pthread_self(), name, MAX_THREAD_NAME);
+	if (name[0] != '\0') {
+		retval = 0;
+	}
+#	else
+#		error thread_get_name() not implemented, you can disable it using WITH_PTHREAD_NP=0
+#	endif
+	if (retval < 0) {
+#endif
+		assert(snprintf(name, MAX_THREAD_NAME, "tid=%d", (pid_t)syscall(SYS_gettid)) > 0);
+#ifdef WITH_PTHREAD_NP
+	}
+#endif
+}

src/tools.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -26,48 +27,34 @@
 #include <stdbool.h>
 #include <errno.h>
 #include <math.h>
-#include <pthread.h>
 #include <time.h>
 #include <assert.h>
 
-#include <sys/ioctl.h>
-#include <sys/syscall.h>
-
-
-#define A_PTHREAD_CREATE(_tid, _func, _arg)	assert(!pthread_create(_tid, NULL, _func, _arg))
-#define A_PTHREAD_JOIN(_tid)				assert(!pthread_join(_tid, NULL))
-
-#define A_PTHREAD_M_INIT(_mutex)	assert(!pthread_mutex_init(_mutex, NULL))
-#define A_PTHREAD_M_DESTROY(_mutex)	assert(!pthread_mutex_destroy(_mutex))
-#define A_PTHREAD_M_LOCK(_mutex)	assert(!pthread_mutex_lock(_mutex))
-#define A_PTHREAD_M_UNLOCK(_mutex)	assert(!pthread_mutex_unlock(_mutex))
-
-#define A_PTHREAD_C_INIT(_cond)		assert(!pthread_cond_init(_cond, NULL))
-#define A_PTHREAD_C_DESTROY(_cond)	assert(!pthread_cond_destroy(_cond))
-#define A_PTHREAD_C_SIGNAL(...)		assert(!pthread_cond_signal(__VA_ARGS__))
-#define A_PTHREAD_C_WAIT_TRUE(_var, _cond, _mutex) { while(!_var) assert(!pthread_cond_wait(_cond, _mutex)); }
-
 
 #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 MEMSET_ZERO_PTR(_ptr)		memset(_ptr, 0, sizeof(*(_ptr)))
 
+#define ARRAY_LEN(_array) (sizeof(_array) / sizeof(_array[0]))
 
 #define INLINE inline __attribute__((always_inline))
 #define UNUSED __attribute__((unused))
 
 
-INLINE char *bool_to_string(const bool flag) {
+INLINE char *bool_to_string(bool flag) {
 	return (flag ? "true" : "false");
 }
 
+INLINE unsigned min_u(unsigned a, unsigned b) {
+	return (a < b ? a : b);
+}
+
 INLINE unsigned max_u(unsigned a, unsigned b) {
 	return (a > b ? a : b);
 }
 
 INLINE long long floor_ms(long double now) {
-	return (long long) now - (now < (long long) now); // floor()
+	return (long long)now - (now < (long long)now); // floor()
 }
 
 INLINE void get_now(clockid_t clk_id, time_t *sec, long *msec) {

src/xioctl.h

@@ -1,4 +1,5 @@
 /*****************************************************************************
+#                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
 #                                                                            #
 #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
@@ -29,10 +30,12 @@
 #include "logging.h"
 
 
-#define XIOCTL_RETRIES 4
+#ifndef XIOCTL_RETRIES
+#	define XIOCTL_RETRIES 4
+#endif
 
 
-INLINE int xioctl(const int fd, const int request, void *arg) {
+INLINE int xioctl(int fd, int request, void *arg) {
 	int retries = XIOCTL_RETRIES;
 	int retval = -1;
 

tools/common.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+#============================================================================#
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+#============================================================================#
+
+
+import textwrap
+
+
+# =====
+C_PREPEND = textwrap.dedent("""
+        /*****************************************************************************
+        #                                                                            #
+        #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+        #                                                                            #
+        #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+        #                                                                            #
+        #    This program is free software: you can redistribute it and/or modify    #
+        #    it under the terms of the GNU General Public License as published by    #
+        #    the Free Software Foundation, either version 3 of the License, or       #
+        #    (at your option) any later version.                                     #
+        #                                                                            #
+        #    This program is distributed in the hope that it will be useful,         #
+        #    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+        #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+        #    GNU General Public License for more details.                            #
+        #                                                                            #
+        #    You should have received a copy of the GNU General Public License       #
+        #    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+        #                                                                            #
+        *****************************************************************************/
+
+
+        #pragma once
+    """).strip() + "\n"

tools/make-html-h.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env -S python3 -B
 #============================================================================#
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
@@ -24,53 +24,33 @@
 import sys
 import textwrap
 
+import common
+
 
 # =====
-def main():
-    assert len(sys.argv) == 4, "%s <src> <dest> <name>" % (sys.argv[0])
-
-    src = sys.argv[1]
-    dest = sys.argv[2]
+def main() -> None:
+    assert len(sys.argv) == 4, f"{sys.argv[0]} <file.html> <file.h> <name>"
+    html_path = sys.argv[1]
+    header_path = sys.argv[2]
     name = sys.argv[3]
 
-    with open(src, "r") as html_file:
-        text = html_file.read()
+    with open(html_path, "r") as html_file:
+        html = html_file.read()
 
-    text = text.strip()
-    text = text.replace("\"", "\\\"")
-    text = text.replace("%VERSION%", "\" VERSION \"")
-    text = textwrap.indent(text, "\t", (lambda line: True))
-    text = "\n".join(("%s \\" if line.strip() else "%s\\") % (line) for line in text.split("\n"))
-    text = "const char *%s = \" \\\n%s\n\";\n" % (name, text)
-    text = textwrap.dedent("""
-        /*****************************************************************************
-        #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-        #                                                                            #
-        #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-        #                                                                            #
-        #    This program is free software: you can redistribute it and/or modify    #
-        #    it under the terms of the GNU General Public License as published by    #
-        #    the Free Software Foundation, either version 3 of the License, or       #
-        #    (at your option) any later version.                                     #
-        #                                                                            #
-        #    This program is distributed in the hope that it will be useful,         #
-        #    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-        #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-        #    GNU General Public License for more details.                            #
-        #                                                                            #
-        #    You should have received a copy of the GNU General Public License       #
-        #    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-        #                                                                            #
-        *****************************************************************************/
+    html = html.strip()
+    html = html.replace("\"", "\\\"")
+    html = html.replace("%VERSION%", "\" VERSION \"")
+    html = textwrap.indent(html, "\t", (lambda line: True))
+    html = "\n".join(
+        (f"{line} \\" if line.strip() else f"{line}\\")
+        for line in html.split("\n")
+    )
 
+    text = f"{common.C_PREPEND}\n#include \"../../config.h\"\n\n\n"
+    text += f"const char HTML_{name}_PAGE[] = \" \\\n{html}\n\";\n"
 
-        #pragma once
-
-        #include "../config.h"
-    """).strip() + "\n\n\n" + text
-
-    with open(dest, "w") as h_file:
-        h_file.write(text)
+    with open(header_path, "w") as header_file:
+        header_file.write(text)
 
 
 # =====

tools/make-jpeg-h.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env -S python3 -B
 #============================================================================#
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
@@ -22,57 +22,69 @@
 
 
 import sys
-import textwrap
+import io
+import struct
+
+from typing import Tuple
+from typing import List
+
+import common
 
 
 # =====
-def main():
-    assert len(sys.argv) == 6, "%s <src> <dest> <prefix> <width> <height>" % (sys.argv[0])
+def _get_jpeg_size(data: bytes) -> Tuple[int, int]:
+    # https://sheep.horse/2013/9/finding_the_dimensions_of_a_jpeg_file_in_python.html
 
-    src = sys.argv[1]
-    dest = sys.argv[2]
-    prefix = sys.argv[3]
-    width = int(sys.argv[4])
-    height = int(sys.argv[5])
+    stream = io.BytesIO(data)
+    while True:
+        marker = struct.unpack(">H", stream.read(2))[0]
+        if (
+            marker == 0xFFD8  # Start of image
+            or marker == 0xFF01  # Private marker
+            or (marker >= 0xFFD0 and marker <= 0xFFD7)  # Restart markers
+        ):
+            continue
+        elif marker == 0xFFD9:
+            raise RuntimeError("Can't find jpeg size")
 
-    with open(src, "rb") as jpg_file:
-        jpg_data = jpg_file.read()
+        # All other markers specify chunks with lengths
+        length = struct.unpack(">H", stream.read(2))[0]
 
-    rows = [[]]
-    for ch in jpg_data:
-        if len(rows[-1]) > 20:
-            rows.append([])
-        rows[-1].append(hex(ch))
+        if marker == 0xFFC0:  # Baseline DCT chunk, has the info we want
+            (_, height, width) = struct.unpack(">BHH", stream.read(5))
+            return (width, height)
 
-    text = ",\n\t".join(", ".join(row) for row in rows)
-    text = "const unsigned char %s_JPG_DATA[] = {\n\t%s\n};\n" % (prefix, text)
-    text = "const unsigned long %s_JPG_SIZE = %d;\n\n" % (prefix, len(jpg_data)) + text
-    text = "const unsigned %s_JPG_HEIGHT = %d;\n\n" % (prefix, height) + text
-    text = "const unsigned %s_JPG_WIDTH = %d;\n" % (prefix, width) + text
-    text = textwrap.dedent("""
-        /*****************************************************************************
-        #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
-        #                                                                            #
-        #    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
-        #                                                                            #
-        #    This program is free software: you can redistribute it and/or modify    #
-        #    it under the terms of the GNU General Public License as published by    #
-        #    the Free Software Foundation, either version 3 of the License, or       #
-        #    (at your option) any later version.                                     #
-        #                                                                            #
-        #    This program is distributed in the hope that it will be useful,         #
-        #    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-        #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-        #    GNU General Public License for more details.                            #
-        #                                                                            #
-        #    You should have received a copy of the GNU General Public License       #
-        #    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-        #                                                                            #
-        *****************************************************************************/
-    """).strip() + "\n\n\n" + text
+        # Not the chunk we want, skip it
+        stream.seek(length - 2, 1)
 
-    with open(dest, "w") as h_file:
-        h_file.write(text)
+
+# =====
+def main() -> None:
+    assert len(sys.argv) == 4, f"{sys.argv[0]} <file.jpeg> <file.h> <name>"
+    jpeg_path = sys.argv[1]
+    header_path = sys.argv[2]
+    name = sys.argv[3]
+
+    with open(jpeg_path, "rb") as jpeg_file:
+        jpeg_data = jpeg_file.read()
+
+    (width, height) = _get_jpeg_size(jpeg_data)
+
+    jpeg_data_text = "{\n\t" + ",\n\t".join(
+        ", ".join(
+            f"0x{ch:02X}"
+            for ch in jpeg_data[index:index + 20]
+        )
+        for index in range(0, len(jpeg_data), 20)
+    ) + ",\n}"
+
+    text = f"{common.C_PREPEND}\n\n"
+    text += f"const unsigned {name}_JPEG_WIDTH = {width};\n"
+    text += f"const unsigned {name}_JPEG_HEIGHT = {height};\n\n"
+    text += f"const unsigned char {name}_JPEG_DATA[] = {jpeg_data_text};\n"
+
+    with open(header_path, "w") as header_file:
+        header_file.write(text)
 
 
 # =====