Bump version: 1.0 → 1.1

changed upstream url
refactoring
2026-02-19 16:26:30 +00:00 · 2019-09-01 22:43:13 +03:00 · 2019-09-01 22:42:58 +03:00 · 2019-07-27 18:22:08 +03:00 · 2019-07-13 07:15:28 +03:00 · 2019-07-13 07:14:33 +03:00
38 changed files with 1626 additions and 1186 deletions
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 0.71
+current_version = 1.1
 parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
 serialize = 
 	{major}.{minor}
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 /pkg/arch/src/
 /pkg/arch/v*.tar.gz
 /pkg/arch/ustreamer-*.pkg.tar.xz
+/config.mk
 /vgcore.*
 /ustreamer
 /*.sock
--- a/52
+++ b/52
@@ -1,23 +1,39 @@
+-include config.mk
+
+PROG ?= ustreamer
 DESTDIR ?=
 PREFIX ?= /usr/local
+
+CC ?= gcc
 CFLAGS ?= -O3
 LDFLAGS ?=
-CC ?= gcc
+
+RPI_VC_HEADERS ?= /opt/vc/include
+RPI_VC_LIBS ?= /opt/vc/lib


 # =====
 LIBS = -lm -ljpeg -pthread -levent -levent_pthreads -luuid
 override CFLAGS += -c -std=c11 -Wall -Wextra -D_GNU_SOURCE
 SOURCES = $(shell ls src/*.c src/http/*.c src/encoders/cpu/*.c src/encoders/hw/*.c)
-PROG = ustreamer

-ifeq ($(shell ls -d /opt/vc/include 2>/dev/null), /opt/vc/include)
+
+define optbool
+$(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)
 SOURCES += $(shell ls src/encoders/omx/*.c)
-LIBS += -lbcm_host -lvcos -lopenmaxil -L/opt/vc/lib
-override CFLAGS += -DWITH_OMX_ENCODER -DOMX_SKIP64BIT -I/opt/vc/include
 endif

-OBJECTS = $(SOURCES:.c=.o)
+
+ifneq ($(call optbool,$(WITH_GPIO)),)
+LIBS += -lwiringPi
+override CFLAGS += -DWITH_GPIO
+endif


 # =====
@@ -28,17 +44,32 @@ 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/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): $(SOURCES:.c=.o)
+	$(info -- LINKING $@)
+	@ $(CC) $(SOURCES:.c=.o) -o $@ $(LDFLAGS) $(LIBS)
+	$(info ===== Build complete =====)
+	$(info == CC      = $(CC))
+	$(info == LIBS    = $(LIBS))
+	$(info == CFLAGS  = $(CFLAGS))
+	$(info == LDFLAGS = $(LDFLAGS))


 .c.o:
-	$(CC) $(LIBS) $(CFLAGS) $< -o $@
+	$(info -- CC $<)
+	@ $(CC) $< -o $@ $(CFLAGS) $(LIBS)


 release:
@@ -50,13 +81,14 @@ release:


 bump:
-	bumpversion $(if $(V), $(V), minor)
+	bumpversion $(if $(V),$(V),minor)


 push:
 	git push
 	git push --tags

+
 clean-all: clean
 clean:
 	find src -name '*.o' -exec rm '{}' \;
--- a/README.md
+++ b/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:

@@ -11,11 +11,12 @@
 | Multithreaded JPEG encoding | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
 | [OpenMAX IL](https://www.khronos.org/openmaxil) hardware acceleration<br>on Raspberry Pi | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Yes | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) No |
 | Behavior when the device<br>is disconnected while streaming | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Shows a black screen<br>with ```NO SIGNAL``` on it<br>until reconnected | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Stops the 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>2</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 |
 | 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 |
 | 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 |

 Footnotes:
@@ -31,16 +32,17 @@ If you're going to live-stream from your backyard webcam and need to control it,
 # Building
 You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support, ```libjpeg8```/```libjpeg-turbo``` and ```libuuid```.

-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```.

 ```
-$ 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
--- a/README.ru.md
+++ b/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:

@@ -11,11 +11,12 @@
 | Многопоточное кодирование JPEG | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
 | Аппаратное кодирование с помощью [OpenMAX IL](https://www.khronos.org/openmaxil) на Raspberry Pi | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Есть | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Нет |
 | Поведение при физическом отключении<br>устройства от сервера во время работы | ![#00aa00](https://placehold.it/15/00aa00/000000?text=+) Транслирует черный экран<br>с надписью ```NO SIGNAL```,<br>пока устройство не будет подключено снова | ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) Прерывает трансляцию <sup>1</sup> |
-| Поддержка [DV-таймингов](https://linuxtv.org/downloads/v4l-dvb-apis/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>2</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 |
 | 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 |

 Сносочки:
@@ -31,16 +32,17 @@
 # Сборка
 Для сборки вам понадобятся ```make```, ```gcc```, ```libevent``` с поддержкой ```pthreads```, ```libjpeg8```/```libjpeg-turbo``` и ```libuuid```.

-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```.

 ```
-$ 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
--- a/pkg/arch/PKGBUILD
+++ b/pkg/arch/PKGBUILD
@@ -3,28 +3,34 @@


 pkgname=ustreamer
-pkgver=0.71
+pkgver=1.1
 pkgrel=1
 pkgdesc="Lightweight and fast MJPG-HTTP streamer"
-url="https://github.com/pi-kvm/ustreamer"
+url="https://github.com/pikvm/ustreamer"
 license=(GPL)
 arch=(i686 x86_64 armv6h armv7h)
 depends=(libjpeg libevent libutil-linux)
-# optional: raspberrypi-firmware for OMX JPEG encoder
+# optional: raspberrypi-firmware for OMX encoder
+# optional: wiringpi for GPIO support
 makedepends=(gcc make)
-source=("$url/archive/v$pkgver.tar.gz")
+source=(${pkgname}::"git+https://github.com/pikvm/ustreamer#commit=v${pkgver}")
 md5sums=(SKIP)


 build() {
-	cd $srcdir
+	cd "$srcdir"
 	rm -rf $pkgname-build
-	cp -r $pkgname-$pkgver $pkgname-build
+	cp -r $pkgname $pkgname-build
 	cd $pkgname-build
-	make CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" $MAKEFLAGS
+
+	local _options=""
+	[ -e /opt/vc/include/IL/OMX_Core.h ] && _options="$_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
+	cd "$srcdir/$pkgname-build"
 	make DESTDIR="$pkgdir" PREFIX=/usr install
 }
--- a/pkg/gentoo/ustreamer-9999.ebuild
+++ b/pkg/gentoo/ustreamer-9999.ebuild
@@ -6,8 +6,8 @@ EAPI=7
 inherit git-r3
 
 DESCRIPTION="uStreamer - Lightweight and fast MJPG-HTTP streamer"
-HOMEPAGE="https://github.com/pi-kvm/ustreamer"
-EGIT_REPO_URI="https://github.com/pi-kvm/ustreamer.git"
+HOMEPAGE="https://github.com/pikvm/ustreamer"
+EGIT_REPO_URI="https://github.com/pikvm/ustreamer.git"
 
 LICENSE="GPL-3"
 SLOT="0"
--- a/pkg/openwrt/Makefile
+++ b/pkg/openwrt/Makefile
@@ -6,12 +6,12 @@
 include $(TOPDIR)/rules.mk

 PKG_NAME:=ustreamer
-PKG_VERSION:=0.71
+PKG_VERSION:=1.1
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>

 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_URL:=https://github.com/pi-kvm/ustreamer.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)
@@ -26,7 +26,7 @@ define Package/ustreamer
  CATEGORY:=Multimedia
  TITLE:=uStreamer
  DEPENDS:=+libpthread +libjpeg +libv4l +libuuid +libevent2 +libevent2-core +libevent2-extra +libevent2-pthreads
-  URL:=https://github.com/pi-kvm/ustreamer
+  URL:=https://github.com/pikvm/ustreamer
 endef

 define Package/ustreamer/description
--- a/pkg/openwrt/files/ustreamer.config
+++ b/pkg/openwrt/files/ustreamer.config
@@ -6,8 +6,7 @@ config ustreamer
 	option device_timeout '5'
 	option input '0'

-	option width '640'
-	option height '480'
+	option resolution '640x480'
 	option format 'YUYV'
 	option quality '80'
 	option desired_fps '0'
--- a/pkg/openwrt/files/ustreamer.init
+++ b/pkg/openwrt/files/ustreamer.init
@@ -22,8 +22,7 @@ start_instance() {
 	options="$options --device-timeout='`getcfg device_timeout 5`'"
 	options="$options --input='`getcfg input 0`'"

-	options="$options --width='`getcfg width 640`'"
-	options="$options --height='`getcfg height 480`'"
+	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`'"
--- a/src/config.h
+++ b/src/config.h
@@ -22,4 +22,6 @@

 #pragma once

-#define VERSION "0.71"
+#ifndef VERSION
+#	define VERSION "1.1"
+#endif
--- a/src/device.c
+++ b/src/device.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "device.h"
+
 #include <stdlib.h>
 #include <stddef.h>
 #include <stdbool.h>
@@ -30,13 +32,13 @@
 #include <errno.h>
 #include <assert.h>

+#include <sys/select.h>
 #include <sys/mman.h>
 #include <linux/videodev2.h>

 #include "tools.h"
 #include "logging.h"
 #include "xioctl.h"
-#include "device.h"


 static const struct {
@@ -81,12 +83,15 @@ 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 controls_t *ctl;
+struct device_t *device_init(void) {
 	struct device_runtime_t *run;
 	struct device_t *dev;
+	long cores_sysconf;
+	unsigned cores_available;

-	A_CALLOC(ctl, 1);
+	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;
@@ -97,18 +102,16 @@ struct device_t *device_init() {
 	dev->height = 480;
 	dev->format = V4L2_PIX_FMT_YUYV;
 	dev->standard = V4L2_STD_UNKNOWN;
-	dev->n_buffers = max_u(min_u(sysconf(_SC_NPROCESSORS_ONLN), 4), 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->ctl = ctl;
 	dev->run = run;
 	return dev;
 }

 void device_destroy(struct device_t *dev) {
 	free(dev->run);
-	free(dev->ctl);
 	free(dev);
 }

@@ -226,6 +229,39 @@ int device_switch_capturing(struct device_t *dev, bool enable) {
    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;

@@ -239,14 +275,15 @@ int device_grab_buffer(struct device_t *dev) {
 		return -1;
 	}

-	LOG_DEBUG("Got a new frame in buffer index=%u; bytesused=%u", buf_info.index, buf_info.bytesused);
+	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);
+		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;
 }

@@ -322,7 +359,7 @@ 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;
@@ -343,24 +380,22 @@ 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;
 		}

@@ -390,7 +425,7 @@ 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) {
-		LOG_PERROR("Unable to set pixelformat=%s; resolution=%ux%u",
+		LOG_PERROR("Unable to set pixelformat=%s, resolution=%ux%u",
 			_format_to_string_supported(dev->format),
 			dev->run->width,
 			dev->run->height);
@@ -561,7 +596,7 @@ static int _device_apply_resolution(struct device_t *dev, unsigned width, unsign
 		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;
 	}
@@ -578,14 +613,14 @@ static void _device_apply_controls(struct device_t *dev) {
 		}

 #	define SET_CID_MANUAL(_cid, _dest) { \
-			if (dev->ctl->_dest.value_set) { \
-				SET_CID(_cid, _dest, dev->ctl->_dest.value, false); \
+			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); \
+			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); \
 			} \
 		}
--- a/src/device.h
+++ b/src/device.h
@@ -28,11 +28,13 @@
 #include <linux/videodev2.h>


-#define VIDEO_MIN_WIDTH		320
-#define VIDEO_MAX_WIDTH		1920
+#define VIDEO_MIN_WIDTH		160
+#define VIDEO_MAX_WIDTH		10240

-#define VIDEO_MIN_HEIGHT	180
-#define VIDEO_MAX_HEIGHT	1200
+#define VIDEO_MIN_HEIGHT	120
+#define VIDEO_MAX_HEIGHT	4320
+
+#define VIDEO_MAX_FPS		120

 #define STANDARD_UNKNOWN	V4L2_STD_UNKNOWN
 #define STANDARDS_STR		"PAL, NTSC, SECAM"
@@ -104,13 +106,13 @@ struct device_t {
 	unsigned		timeout;
 	unsigned		error_delay;

-	struct controls_t *ctl;
+	struct controls_t ctl;

 	struct device_runtime_t *run;
 };


-struct device_t *device_init();
+struct device_t *device_init(void);
 void device_destroy(struct device_t *dev);

 int device_parse_format(const char *str);
@@ -120,6 +122,7 @@ 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);
--- a/src/encoder.c
+++ b/src/encoder.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "encoder.h"
+
 #include <stdbool.h>
 #include <strings.h>
 #include <assert.h>
@@ -29,12 +31,11 @@
 #include "tools.h"
 #include "logging.h"
 #include "device.h"
-#include "encoder.h"

 #include "encoders/cpu/encoder.h"
 #include "encoders/hw/encoder.h"

-#ifdef WITH_OMX_ENCODER
+#ifdef WITH_OMX
 #	include "encoders/omx/encoder.h"
 #endif

@@ -45,13 +46,13 @@ static const struct {
 } _ENCODER_TYPES[] = {
 	{"CPU",	ENCODER_TYPE_CPU},
 	{"HW",	ENCODER_TYPE_HW},
-#	ifdef WITH_OMX_ENCODER
+#	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;

@@ -68,7 +69,7 @@ struct encoder_t *encoder_init() {
 }

 void encoder_destroy(struct encoder_t *encoder) {
-#	ifdef WITH_OMX_ENCODER
+#	ifdef WITH_OMX
 	if (encoder->run->omxs) {
 		for (unsigned index = 0; index < encoder->run->n_omxs; ++index) {
 			if (encoder->run->omxs[index]) {
@@ -107,13 +108,13 @@ void encoder_prepare(struct encoder_t *encoder, struct device_t *dev) {
 	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 JPEG encoder because the input format is (M)JPEG");
+		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 JPEG encoder because the input format is not (M)JPEG");
+			LOG_INFO("Switching to CPU encoder because the input format is not (M)JPEG");
 			goto use_cpu;
 		}

@@ -123,12 +124,23 @@ void encoder_prepare(struct encoder_t *encoder, struct device_t *dev) {

 		dev->run->n_workers = 1;
 	}
-#	ifdef WITH_OMX_ENCODER
+#	ifdef WITH_OMX
 	else if (type == ENCODER_TYPE_OMX) {
-		LOG_DEBUG("Preparing OMX JPEG encoder ...");
+		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 JPEG encoder sets limit for worker threads: %u", OMX_MAX_ENCODERS);
+			LOG_INFO("OMX encoder sets limit for worker threads: %u", OMX_MAX_ENCODERS);
 			dev->run->n_workers = OMX_MAX_ENCODERS;
 		}

@@ -139,14 +151,14 @@ void encoder_prepare(struct encoder_t *encoder, struct device_t *dev) {
 		// 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 JPEG encoder, falling back to CPU");
+				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 JPEG encoder, falling back to CPU");
+				LOG_ERROR("Can't prepare OMX encoder, falling back to CPU");
 				goto force_cpu;
 			}
 		}
@@ -188,12 +200,14 @@ int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev, uns

 	assert(encoder->run->type != ENCODER_TYPE_UNKNOWN);

+	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 WITH_OMX_ENCODER
+#	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;
@@ -201,6 +215,8 @@ int encoder_compress_buffer(struct encoder_t *encoder, struct device_t *dev, uns
 	}
 #	endif

+	dev->run->pictures[buf_index].encode_end_time = get_now_monotonic();
+
 	return 0;

 #	pragma GCC diagnostic ignored "-Wunused-label"
--- a/src/encoder.h
+++ b/src/encoder.h
@@ -29,9 +29,14 @@
 #include "tools.h"
 #include "device.h"

-#ifdef WITH_OMX_ENCODER
+#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
@@ -45,7 +50,7 @@ enum encoder_type_t {
 	ENCODER_TYPE_UNKNOWN, // Only for encoder_parse_type() and main()
 	ENCODER_TYPE_CPU,
 	ENCODER_TYPE_HW,
-#	ifdef WITH_OMX_ENCODER
+#	ifdef WITH_OMX
 	ENCODER_TYPE_OMX,
 #	endif
 };
@@ -56,7 +61,7 @@ struct encoder_runtime_t {
 	bool				cpu_forced;
 	pthread_mutex_t		mutex;

-#	ifdef WITH_OMX_ENCODER
+#	ifdef WITH_OMX
 	unsigned				n_omxs;
 	struct omx_encoder_t	**omxs;
 #	endif
@@ -65,12 +70,16 @@ struct encoder_runtime_t {
 struct encoder_t {
 	enum encoder_type_t	type;
 	unsigned			quality;
+#	ifdef WITH_OMX
+	unsigned	n_glitched_resolutions;
+	unsigned	glitched_resolutions[2][MAX_GLITCHED_RESOLUTIONS];
+#	endif

 	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 *str);
--- a/src/encoders/cpu/encoder.c
+++ b/src/encoders/cpu/encoder.c
@@ -25,6 +25,8 @@
 *****************************************************************************/


+#include "encoder.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -36,8 +38,6 @@
 #include "../../tools.h"
 #include "../../device.h"

-#include "encoder.h"
-

 struct _jpeg_dest_manager_t {
 	struct				jpeg_destination_mgr mgr; // Default manager
@@ -100,13 +100,11 @@ void cpu_encoder_compress_buffer(struct device_t *dev, unsigned index, unsigned
 		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 JPEG encoder");
+		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);

--- a/src/encoders/hw/encoder.c
+++ b/src/encoders/hw/encoder.c
@@ -25,6 +25,8 @@
 *****************************************************************************/


+#include "encoder.h"
+
 #include <stdbool.h>
 #include <string.h>
 #include <assert.h>
@@ -37,7 +39,6 @@
 #include "../../device.h"

 #include "huffman.h"
-#include "encoder.h"


 static bool _is_huffman(const unsigned char *data);
@@ -50,12 +51,12 @@ int hw_encoder_prepare(struct device_t *dev, unsigned quality) {
 	MEMSET_ZERO(comp);

 	if (xioctl(dev->run->fd, VIDIOC_G_JPEGCOMP, &comp) < 0) {
-		LOG_ERROR("Can't query HW JPEG encoder params and set quality (unsupported)");
+		LOG_ERROR("Can't query HW encoder params and set quality (unsupported)");
 		return -1;
 	}
 	comp.quality = quality;
 	if (xioctl(dev->run->fd, VIDIOC_S_JPEGCOMP, &comp) < 0) {
-		LOG_ERROR("Can't set HW JPEG encoder quality (unsopported)");
+		LOG_ERROR("Can't set HW encoder quality (unsupported)");
 		return -1;
 	}
 	return 0;
@@ -63,7 +64,7 @@ int hw_encoder_prepare(struct device_t *dev, unsigned quality) {

 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 JPEG encoder");
+		assert(0 && "Unsupported input format for HW encoder");
 	}

 #	define PICTURE(_next)	dev->run->pictures[index]._next
--- a/src/encoders/omx/component.c
+++ b/src/encoders/omx/component.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "component.h"
+
 #include <unistd.h>

 #include <IL/OMX_Core.h>
@@ -28,7 +30,6 @@
 #include "../../logging.h"

 #include "formatters.h"
-#include "component.h"


 static int _component_wait_port_changed(OMX_HANDLETYPE *component, OMX_U32 port, OMX_BOOL enabled);
--- a/src/encoders/omx/encoder.c
+++ b/src/encoders/omx/encoder.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "encoder.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -39,7 +41,6 @@

 #include "formatters.h"
 #include "component.h"
-#include "encoder.h"


 static const OMX_U32 _INPUT_PORT = 340;
@@ -69,7 +70,7 @@ static OMX_ERRORTYPE _omx_output_available_handler(
 	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/
@@ -98,7 +99,7 @@ struct omx_encoder_t *omx_encoder_init() {
 	}
 	_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");
@@ -124,7 +125,7 @@ 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);
@@ -328,7 +329,7 @@ static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev) {
 		// 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 JPEG encoder");
+		default: assert(0 && "Unsupported input format for OMX encoder");
 	}

 #	undef MAP_FORMAT
--- a/src/encoders/omx/encoder.h
+++ b/src/encoders/omx/encoder.h
@@ -50,7 +50,7 @@ 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(struct omx_encoder_t *omx, struct device_t *dev, unsigned quality);
--- a/src/encoders/omx/formatters.c
+++ b/src/encoders/omx/formatters.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "formatters.h"
+
 #include <stdio.h>
 #include <assert.h>

@@ -27,7 +29,6 @@
 #include <IL/OMX_Core.h>

 #include "../../tools.h"
-#include "formatters.h"


 #define CASE_TO_STRING(_value) \
--- a/src/gpio.h
+++ b/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)
--- a/src/http/base64.c
+++ b/src/http/base64.c
@@ -20,12 +20,13 @@
 *****************************************************************************/


+#include "base64.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>

 #include "../tools.h"
-#include "base64.h"


 static const char ENCODING_TABLE[] = {
--- a/src/http/blank.c
+++ b/src/http/blank.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "blank.h"
+
 #include <stdio.h>
 #include <stdbool.h>
 #include <string.h>
@@ -32,8 +34,6 @@

 #include "data/blank_jpeg.h"

-#include "blank.h"
-

 struct _jpeg_error_manager_t {
 	struct jpeg_error_mgr	mgr; // Default manager
@@ -41,7 +41,7 @@ struct _jpeg_error_manager_t {
 };


-static struct blank_t *_blank_init_internal();
+static struct blank_t *_blank_init_internal(void);
 static struct blank_t *_blank_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);
@@ -68,7 +68,7 @@ void blank_destroy(struct blank_t *blank) {
 	free(blank);
 }

-static struct blank_t *_blank_init_internal() {
+static struct blank_t *_blank_init_internal(void) {
 	struct blank_t *blank;

 	A_CALLOC(blank, 1);
@@ -145,6 +145,7 @@ static int _jpeg_read_geometry(FILE *fp, unsigned *width, unsigned *height) {

 	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) {
--- a/src/http/data/blank_jpeg.h
+++ b/src/http/data/blank_jpeg.h
--- a/src/http/data/index.html
+++ b/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>
--- a/src/http/data/index_html.h
+++ b/src/http/data/index_html.h
@@ -82,7 +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> \
 ";
--- a/src/http/mime.c
+++ b/src/http/mime.c
@@ -20,14 +20,14 @@
 *****************************************************************************/


+#include "mime.h"
+
 #include <string.h>

 #include <event2/util.h>

 #include "../tools.h"

-#include "mime.h"
-

 static const struct {
 	const char *ext;
--- a/src/http/path.c
+++ b/src/http/path.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "path.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -27,8 +29,6 @@

 #include "../tools.h"

-#include "path.h"
-

 char *simplify_request_path(const char *str) {
 	// Based on Lighttpd sources:
--- a/src/http/server.c
+++ b/src/http/server.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "server.h"
+
 #include <stdlib.h>
 #include <stdbool.h>
 #include <stdatomic.h>
@@ -51,12 +53,14 @@
 #include "../logging.h"
 #include "../encoder.h"
 #include "../stream.h"
+#ifdef WITH_GPIO
+#	include "../gpio.h"
+#endif

 #include "blank.h"
 #include "base64.h"
 #include "mime.h"
 #include "static.h"
-#include "server.h"

 #include "data/index_html.h"

@@ -77,7 +81,7 @@ static void _http_callback_stream_error(struct bufferevent *buf_event, short wha
 static void _http_exposed_refresh(int fd, short event, void *v_server);
 static void _http_queue_send_stream(struct http_server_t *server, bool stream_updated, bool picture_updated);

-static bool _expose_new_picture(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);


@@ -121,7 +125,10 @@ void http_server_destroy(struct http_server_t *server) {
 		close(server->run->unix_fd);
 	}
 	event_base_free(server->run->base);
+
+#	if LIBEVENT_VERSION_NUMBER >= 0x02010100
 	libevent_global_shutdown();
+#	endif

 	for (struct stream_client_t *client = server->run->stream_clients; client != NULL;) {
 		struct stream_client_t *next = client->next;
@@ -199,19 +206,25 @@ int http_server_listen(struct http_server_t *server) {

 	if (server->unix_path[0] != '\0') {
 		struct sockaddr_un unix_addr;
-		int unix_fd_flags;

 		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);
+#		define MAX_SUN_PATH (sizeof(unix_addr.sun_path) - 1)

-		strncpy(unix_addr.sun_path, server->unix_path, 107);
-		unix_addr.sun_path[107] = '\0';
+		if (strlen(server->unix_path) > MAX_SUN_PATH) {
+			LOG_ERROR("UNIX socket path is too long; max=%zu", MAX_SUN_PATH);
+			return -1;
+		}
+
+		MEMSET_ZERO(unix_addr);
+		strncpy(unix_addr.sun_path, server->unix_path, MAX_SUN_PATH);
 		unix_addr.sun_family = AF_UNIX;

+#		undef MAX_SUN_PATH
+
+		assert((server->run->unix_fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0);
+		assert(!evutil_make_socket_nonblocking(server->run->unix_fd));
+
 		if (server->unix_rm && unlink(server->unix_path) < 0) {
 			if (errno != ENOENT) {
 				LOG_PERROR("Can't remove old UNIX socket '%s'", server->unix_path);
@@ -554,12 +567,18 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 		}
 		server->run->stream_clients_count += 1;

-		if (server->slowdown && server->run->stream_clients_count == 1) {
-			stream_switch_slowdown(server->run->stream, false);
+		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; clients now: %u",
+		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);
@@ -707,8 +726,15 @@ static void _http_callback_stream_error(UNUSED struct bufferevent *buf_event, UN
 #	define RUN(_next) client->server->run->_next

 	RUN(stream_clients_count) -= 1;
-	if (client->server->slowdown && RUN(stream_clients_count) <= 0) {
-		stream_switch_slowdown(RUN(stream), true);
+
+	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);
@@ -798,7 +824,7 @@ static void _http_exposed_refresh(UNUSED int fd, UNUSED short what, void *v_serv
 		LOG_DEBUG("Refreshing HTTP exposed ...");
 		A_MUTEX_LOCK(&server->run->stream->mutex);
 		if (server->run->stream->picture.used > 0) { // If online
-			picture_updated = _expose_new_picture(server);
+			picture_updated = _expose_new_picture_unsafe(server);
 			UNLOCK_STREAM;
 		} else {
 			UNLOCK_STREAM;
@@ -816,7 +842,7 @@ 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) {
+static bool _expose_new_picture_unsafe(struct http_server_t *server) {
 #	define STREAM(_next) server->run->stream->_next
 #	define EXPOSED(_next) server->run->exposed->_next

@@ -836,13 +862,13 @@ static bool _expose_new_picture(struct http_server_t *server) {
 		) {
 			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",
+			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",
+			LOG_VERBOSE("HTTP: passed same frame check (frames are differ); cmp_time=%.06Lf",
 				EXPOSED(expose_cmp_time) - EXPOSED(expose_begin_time));
 		}
 	}
--- a/src/http/static.c
+++ b/src/http/static.c
@@ -20,6 +20,8 @@
 *****************************************************************************/


+#include "static.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -32,7 +34,6 @@
 #include "../logging.h"

 #include "path.h"
-#include "static.h"


 char *find_static_file_path(const char *root_path, const char *request_path) {
--- a/src/logging.h
+++ b/src/logging.h
@@ -44,8 +44,12 @@ pthread_mutex_t log_mutex;
 #define LOG_LEVEL_DEBUG		3


-#define LOGGING_INIT	assert(!pthread_mutex_init(&log_mutex, NULL))
-#define LOGGING_DESTROY	assert(!pthread_mutex_destroy(&log_mutex))
+#define LOGGING_INIT { \
+		log_level = LOG_LEVEL_INFO; \
+		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))
@@ -123,10 +127,10 @@ pthread_mutex_t log_mutex;


 INLINE char *errno_to_string(char *buf, size_t size) {
-#if defined(__GLIBC__) && defined(_GNU_SOURCE)
+#	if defined(__GLIBC__) && defined(_GNU_SOURCE)
 	return strerror_r(errno, buf, size);
-#else
+#	else
 	strerror_r(errno, buf, size);
 	return buf;
-#endif
+#	endif
 }
--- a/src/main.c
+++ b/src/main.c
@@ -27,6 +27,8 @@

 #include <stdio.h>
 #include <stdbool.h>
+#include <string.h>
+#include <limits.h>
 #include <signal.h>
 #include <getopt.h>

@@ -39,12 +41,20 @@
 #include "encoder.h"
 #include "stream.h"
 #include "http/server.h"
+#ifdef WITH_GPIO
+#	include "gpio.h"
+#endif


-static const char _SHORT_OPTS[] = "d:i:x:y:m:a:f:z:ntb:w:q:c:s:p:u:ro:k:e:lhv";
+static const char _SHORT_OPTS[] = "d:i:r:x:y:m:a:f:z:ntb:w:q:c:s:p:U:DM:k:e:lR:hv"
+#ifdef WITH_OMX
+	"g:"
+#endif
+;
 static const struct option _LONG_OPTS[] = {
 	{"device",					required_argument,	NULL,	'd'},
 	{"input",					required_argument,	NULL,	'i'},
+	{"resolution",				required_argument,	NULL,	'r'},
 	{"width",					required_argument,	NULL,	'x'},
 	{"height",					required_argument,	NULL,	'y'},
 	{"format",					required_argument,	NULL,	'm'},
@@ -57,6 +67,9 @@ static const struct option _LONG_OPTS[] = {
 	{"workers",					required_argument,	NULL,	'w'},
 	{"quality",					required_argument,	NULL,	'q'},
 	{"encoder",					required_argument,	NULL,	'c'},
+#	ifdef WITH_OMX
+	{"glitched-resolutions",	required_argument,	NULL,	'g'},
+#	endif
 	{"device-timeout",			required_argument,	NULL,	1000},
 	{"device-error-delay",		required_argument,	NULL,	1001},

@@ -76,19 +89,27 @@ static const struct option _LONG_OPTS[] = {

 	{"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'},
+	{"unix",					required_argument,	NULL,	'U'},
+	{"unix-rm",					no_argument,		NULL,	'D'},
+	{"unix-mode",				required_argument,	NULL,	'M'},
 	{"user",					required_argument,	NULL,	3000},
 	{"passwd",					required_argument,	NULL,	3001},
 	{"static",					required_argument,	NULL,	3002},
 	{"blank",					required_argument,	NULL,	'k'},
 	{"drop-same-frames",		required_argument,	NULL,	'e'},
 	{"slowdown",				no_argument,		NULL,	'l'},
+	{"fake-resolution",			required_argument,	NULL,	'R'},
 	{"fake-width",				required_argument,	NULL,	3003},
 	{"fake-height",				required_argument,	NULL,	3004},
 	{"server-timeout",			required_argument,	NULL,	3005},

+#ifdef WITH_GPIO
+	{"gpio-prog-running",		required_argument,	NULL,	4000},
+	{"gpio-stream-online",		required_argument,	NULL,	4001},
+	{"gpio-has-http-clients",	required_argument,	NULL,	4002},
+	{"gpio-workers-busy-at",	required_argument,	NULL,	4003},
+#endif
+
 	{"perf",					no_argument,		NULL,	5000},
 	{"verbose",					no_argument,		NULL,	5001},
 	{"debug",					no_argument,		NULL,	5002},
@@ -100,8 +121,11 @@ static const struct option _LONG_OPTS[] = {

 static void _version(bool nl) {
 	printf(VERSION);
-#	ifdef WITH_OMX_ENCODER
+#	ifdef WITH_OMX
 	printf(" + OMX");
+#	endif
+#	ifdef WITH_GPIO
+	printf(" + GPIO");
 #	endif
 	if (nl) {
 		putchar('\n');
@@ -117,31 +141,34 @@ static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_s
 	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. 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 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 (the number of CPU cores (but not more 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 (== --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-error-delay <seconds>  ─ 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("    -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\n", encoder->quality);
+	printf("    -c|--encoder <type>  ───────────────── Use specified encoder. It may affect the number of workers.\n\n");
+#	ifdef WITH_OMX
+	printf("    -g|--glitched-resolutions <WxH,...>  ─ Comma-separated list of resolutions that require forced\n");
+#	endif
+	printf("                                           encoding on CPU instead of OMX. Default: disabled.\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-error-delay <seconds>  ────── 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");
@@ -161,29 +188,37 @@ static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_s
 	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("    -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("    -e|--drop-same-frames <N>  ── Don't send same frames to clients, but no more than specified number.\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 connected.\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("    --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("    -R|--fake-resolution <WxH>  ─ Override image resolution for state. Default: disabled.\n\n");
 	printf("    --server-timeout <seconds>  ─ 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
 	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("                       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");
@@ -192,21 +227,124 @@ static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_s
 	printf("    -v|--version  ──── Print version 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; }
+static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited) {
+	unsigned tmp_width;
+	unsigned tmp_height;

-#	define OPT_UNSIGNED(_dest, _name, _min, _max) { \
-			errno = 0; char *_end = NULL; int _tmp = strtol(optarg, &_end, 0); \
+	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 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); \
+				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) { \
+#	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_RESOLUTION_OBSOLETE(_name, _replace, _dest, _min, _max) { \
+			printf("\n=== WARNING! The option '%s' is obsolete; use '%s' instead it ===\n\n", _name, _replace); \
+			OPT_NUMBER(_name, _dest, _min, _max, 0); \
+		}
+
+#	ifdef WITH_OMX
+#		define OPT_GLITCHED_RESOLUTIONS { \
+				if (_parse_glitched_resolutions(optarg, encoder) < 0) { \
+					return -1; \
+				} \
+				break; \
+			}
+#	endif
+
+#	define OPT_PARSE(_name, _dest, _func, _invalid) { \
 			if ((_dest = _func(optarg)) == _invalid) { \
 				printf("Unknown " _name ": %s\n", optarg); \
 				return -1; \
@@ -214,29 +352,16 @@ static int _parse_options(int argc, char *argv[], struct device_t *dev, struct e
 			break; \
 		}

-#	define OPT_INT(_dest, _name, _base) { \
-			errno = 0; char *_end = NULL; int _tmp = strtol(optarg, &_end, _base); \
-			if (errno || *_end) { \
-				printf("Invalid value for '%s=%s'\n", _name, optarg); \
-				return -1; \
-			} \
-			_dest = _tmp; \
-			break; \
-		}
-
-#	define OPT_CHMOD(_dest, _name) \
-		OPT_INT(_dest, _name, 8)
-
 #	define OPT_CTL(_dest) { \
-			dev->ctl->_dest.value_set = true; \
-			dev->ctl->_dest.auto_set = false; \
-			OPT_INT(dev->ctl->_dest.value, "--"#_dest, 10); \
+			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; \
+			dev->ctl._dest.value_set = false; \
+			dev->ctl._dest.auto_set = true; \
 			break; \
 		}

@@ -247,24 +372,28 @@ static int _parse_options(int argc, char *argv[], struct device_t *dev, struct e
 	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);
+			case 'i':	OPT_NUMBER("--input", dev->input, 0, 128, 0);
+			case 'r':	OPT_RESOLUTION("--resolution", dev->width, dev->height, true);
+			case 'x':	OPT_RESOLUTION_OBSOLETE("--width", "--resolution", dev->width, VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH);
+			case 'y':	OPT_RESOLUTION_OBSOLETE("--height", "--resolution", dev->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");
+			case 'm':	OPT_PARSE("pixel format", dev->format, device_parse_format, FORMAT_UNKNOWN);
 #			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 'a':	OPT_PARSE("TV standard", dev->standard, device_parse_standard, STANDARD_UNKNOWN);
+			case 'f':	OPT_NUMBER("--desired-fps", dev->desired_fps, 0, VIDEO_MAX_FPS, 0);
+			case 'z':	OPT_NUMBER("--min-frame-size", dev->min_frame_size, 0, 8192, 0);
 			case 'n':	OPT_SET(dev->persistent, true);
 			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_UNSIGNED(dev->error_delay, "--device-error-delay", 1, 60);
+			case 'b':	OPT_NUMBER("--buffers", dev->n_buffers, 1, 32, 0);
+			case 'w':	OPT_NUMBER("--workers", dev->n_workers, 1, 32, 0);
+			case 'q':	OPT_NUMBER("--quality", encoder->quality, 1, 100, 0);
+			case 'c':	OPT_PARSE("encoder type", encoder->type, encoder_parse_type, ENCODER_TYPE_UNKNOWN);
+#			ifdef WITH_OMX
+			case 'g':	OPT_GLITCHED_RESOLUTIONS;
+#			endif
+			case 1000:	OPT_NUMBER("--device-timeout", dev->timeout, 1, 60, 0);
+			case 1001:	OPT_NUMBER("--device-error-delay", dev->error_delay, 1, 60, 0);

 			case 2000:	OPT_CTL(brightness);
 			case 2001:	OPT_CTL_AUTO(brightness);
@@ -281,24 +410,32 @@ static int _parse_options(int argc, char *argv[], struct device_t *dev, struct e
 			case 2012:	OPT_CTL_AUTO(gain);

 			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 'p':	OPT_NUMBER("--port", server->port, 1, 65535, 0);
+			case 'U':	OPT_SET(server->unix_path, optarg);
+			case 'D':	OPT_SET(server->unix_rm, true);
+			case 'M':	OPT_NUMBER("--unix-mode", server->unix_mode, INT_MIN, INT_MAX, 8);
 			case 3000:	OPT_SET(server->user, optarg);
 			case 3001:	OPT_SET(server->passwd, optarg);
 			case 3002:	OPT_SET(server->static_path, optarg);
 			case 'k':	OPT_SET(server->blank_path, optarg);
-			case 'e':	OPT_UNSIGNED(server->drop_same_frames, "--drop-same-frames", 0, 30);
+			case 'e':	OPT_NUMBER("--drop-same-frames", server->drop_same_frames, 0, VIDEO_MAX_FPS, 0);
 			case 'l':	OPT_SET(server->slowdown, true);
-			case 3003:	OPT_UNSIGNED(server->fake_width, "--fake-width", 0, 1920);
-			case 3004:	OPT_UNSIGNED(server->fake_height, "--fake-height", 0, 1200);
-			case 3005:	OPT_UNSIGNED(server->timeout, "--server-timeout", 1, 60);
+			case 'R':	OPT_RESOLUTION("--fake-resolution", server->fake_width, server->fake_height, false);
+			case 3003:	OPT_RESOLUTION_OBSOLETE("--fake-width", "--fake-resolution", server->fake_width, 0, UINT_MAX);
+			case 3004:	OPT_RESOLUTION_OBSOLETE("--fake-height", "--fake-resolution", server->fake_height, 0, UINT_MAX);
+			case 3005:	OPT_NUMBER("--server-timeout", server->timeout, 1, 60, 0);
+
+#			ifdef WITH_GPIO
+			case 4000:	OPT_NUMBER("--gpio-prog-running", gpio_pin_prog_running, 0, 256, 0);
+			case 4001:	OPT_NUMBER("--gpio-stream-online", gpio_pin_stream_online, 0, 256, 0);
+			case 4002:	OPT_NUMBER("--gpio-has-http-clients", gpio_pin_has_http_clients, 0, 256, 0);
+			case 4003:	OPT_NUMBER("--gpio-workers-busy-at", gpio_pin_workers_busy_at, 0, 256, 0);
+#			endif

 			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 5010:	OPT_NUMBER("--log-level", log_level, 0, 3, 0);
 			case 'h':	_help(dev, encoder, server); return 1;
 			case 'v':	_version(true); return 1;
 			case 0:		break;
@@ -308,10 +445,13 @@ static int _parse_options(int argc, char *argv[], struct device_t *dev, struct e

 #	undef OPT_CTL_AUTO
 #	undef OPT_CTL
-#	undef OPT_CHMOD
-#	undef OPT_INT
 #	undef OPT_PARSE
-#	undef OPT_UNSIGNED
+#	ifdef WITH_OMX
+#		undef OPT_GLITCHED_RESOLUTIONS
+#	endif
+#	undef OPT_RESOLUTION_OBSOLETE
+#	undef OPT_RESOLUTION
+#	undef OPT_NUMBER
 #	undef OPT_SET
 	return 0;
 }
@@ -323,7 +463,7 @@ struct main_context_t {

 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));
@@ -349,7 +489,7 @@ 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);
@@ -377,12 +517,20 @@ int main(int argc, char *argv[]) {

 	LOGGING_INIT;

+#	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) {
+#		ifdef WITH_GPIO
+		GPIO_INIT_PINOUT;
+#		endif
+
 		_install_signal_handlers();

 		pthread_t stream_loop_tid;
@@ -394,6 +542,10 @@ int main(int argc, char *argv[]) {
 		_ctx = &ctx;

 		if ((exit_code = http_server_listen(server)) == 0) {
+#			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);
@@ -406,6 +558,10 @@ int main(int argc, char *argv[]) {
 	encoder_destroy(encoder);
 	device_destroy(dev);

+#	ifdef WITH_GPIO
+	GPIO_SET_LOW(prog_running);
+#	endif
+
 	LOGGING_DESTROY;
 	return (exit_code < 0 ? 1 : 0);
 }
--- a/src/stream.c
+++ b/src/stream.c
@@ -20,6 +20,9 @@
 *****************************************************************************/


+#include "stream.h"
+
+#include <stdbool.h>
 #include <stdatomic.h>
 #include <unistd.h>
 #include <errno.h>
@@ -28,7 +31,6 @@

 #include <pthread.h>

-#include <sys/select.h>
 #include <linux/videodev2.h>

 #include "tools.h"
@@ -36,18 +38,68 @@
 #include "xioctl.h"
 #include "device.h"
 #include "encoder.h"
-#include "stream.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 stream_t *stream, struct workers_pool_t *pool);
-static int _stream_init(struct stream_t *stream, struct workers_pool_t *pool);
+	long double			last_comp_time;

-static void _stream_init_workers(struct stream_t *stream, struct workers_pool_t *pool);
-static void *_stream_worker_thread(void *v_worker);
-static void _stream_destroy_workers(struct stream_t *stream, 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;
+
+	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) {
@@ -74,20 +126,15 @@ void stream_destroy(struct stream_t *stream) {
 }

 void stream_loop(struct stream_t *stream) {
-	struct workers_pool_t pool;
-
-	MEMSET_ZERO(pool);
-	atomic_init(&pool.workers_stop, false);
-	pool.encoder = stream->encoder;
+	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, &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;
@@ -98,43 +145,22 @@ void stream_loop(struct stream_t *stream) {
 		LOG_INFO("Capturing ...");

 		while (!atomic_load(&stream->proc->stop)) {
-			int free_worker_number = -1;
+			struct _worker_t *ready_worker;

 			SEP_DEBUG('-');
+			LOG_DEBUG("Waiting for worker ...");

-			LOG_DEBUG("Waiting for workers ...");
-			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);
+			ready_worker = _workers_pool_wait(pool);

-			if (oldest_worker && !atomic_load(&oldest_worker->has_job) && oldest_worker->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->buf_index);
-
-				free_worker_number = oldest_worker->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->run->n_workers; ++number) {
-					if (
-						!atomic_load(&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(!atomic_load(&pool.workers[free_worker_number].has_job));
-
-				LOG_PERF("----- Raw frame dropped;  worker = %u", free_worker_number);
+				break;
 			}

 			if (atomic_load(&stream->proc->stop)) {
@@ -145,35 +171,28 @@ void stream_loop(struct stream_t *stream) {
 				usleep(1000000);
 			}

-#			define INIT_FD_SET(_set) \
-				fd_set _set; FD_ZERO(&_set); FD_SET(stream->dev->run->fd, &_set);
+			bool has_read;
+			bool has_write;
+			bool has_error;
+			int selected = device_select(stream->dev, &has_read, &has_write, &has_error);

-			INIT_FD_SET(read_fds);
-			INIT_FD_SET(write_fds);
-			INIT_FD_SET(error_fds);
-
-#			undef INIT_FD_SET
-
-			struct timeval timeout;
-			timeout.tv_sec = stream->dev->timeout;
-			timeout.tv_usec = 0;
-
-			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);
-
-			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");
@@ -183,9 +202,13 @@ 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");

+#					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);
@@ -193,7 +216,6 @@ void stream_loop(struct stream_t *stream) {
 					if ((buf_index = device_grab_buffer(stream->dev)) < 0) {
 						break;
 					}
-					stream->dev->run->pictures[buf_index].grab_time = now;

 					// Workaround for broken, corrupted frames:
 					// Under low light conditions corrupted frames may get captured.
@@ -201,7 +223,7 @@ void stream_loop(struct stream_t *stream) {
 					// For example a VGA (640x480) webcam picture is normally >= 8kByte large,
 					// corrupted frames are smaller.
 					if (stream->dev->run->hw_buffers[buf_index].used < stream->dev->min_frame_size) {
-						LOG_DEBUG("Dropping too small frame sized %zu bytes, assuming it as broken",
+						LOG_DEBUG("Dropped too small frame sized %zu bytes, assuming it was broken",
 							stream->dev->run->hw_buffers[buf_index].used);
 						goto pass_frame;
 					}
@@ -209,56 +231,26 @@ void stream_loop(struct stream_t *stream) {
 					{
 						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("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);
 					}

-#					define FREE_WORKER(_next) pool.workers[free_worker_number]._next
-
-					LOG_DEBUG("Grabbed a new frame to buffer %u", buf_index);
-
-					if (oldest_worker == NULL) {
-						oldest_worker = &pool.workers[free_worker_number];
-						last_worker = oldest_worker;
-					} else {
-						if (FREE_WORKER(order_next)) {
-							FREE_WORKER(order_next->order_prev) = FREE_WORKER(order_prev);
-						}
-						if (FREE_WORKER(order_prev)) {
-							FREE_WORKER(order_prev->order_next) = FREE_WORKER(order_next);
-						}
-						FREE_WORKER(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_MUTEX_LOCK(&FREE_WORKER(has_job_mutex));
-					FREE_WORKER(buf_index) = buf_index;
-					atomic_store(&FREE_WORKER(has_job), true);
-					A_MUTEX_UNLOCK(&FREE_WORKER(has_job_mutex));
-					A_COND_SIGNAL(&FREE_WORKER(has_job_cond));
-
-#					undef FREE_WORKER
-
-					A_MUTEX_LOCK(&pool.free_workers_mutex);
-					pool.free_workers -= 1;
-					A_MUTEX_UNLOCK(&pool.free_workers_mutex);
+					_workers_pool_assign(pool, ready_worker, buf_index);

 					goto next_handlers; // Поток сам освободит буфер

@@ -271,12 +263,12 @@ void stream_loop(struct stream_t *stream) {

 				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 (device_consume_event(stream->dev) < 0) {
 						break;
@@ -292,11 +284,15 @@ void stream_loop(struct stream_t *stream) {
 		stream->height = 0;
 		atomic_store(&stream->updated, true);
 		A_MUTEX_UNLOCK(&stream->mutex);
-	}

-	_stream_destroy_workers(stream, &pool);
-	device_switch_capturing(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) {
@@ -307,7 +303,41 @@ void stream_switch_slowdown(struct stream_t *stream, bool slowdown) {
 	atomic_store(&stream->proc->slowdown, slowdown);
 }

-static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index) {
+static struct _workers_pool_t *_stream_init_loop(struct stream_t *stream) {
+	struct _workers_pool_t *pool = NULL;
+
+	LOG_DEBUG("%s: stream->proc->stop=%d", __FUNCTION__, atomic_load(&stream->proc->stop));
+
+	while (!atomic_load(&stream->proc->stop)) {
+		SEP_INFO('=');
+
+		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 pool;
+}
+
+static struct _workers_pool_t *_stream_init(struct stream_t *stream) {
+	if (device_open(stream->dev) < 0) {
+		goto error;
+	}
+	if (device_switch_capturing(stream->dev, true) < 0) {
+		goto error;
+	}
+
+	encoder_prepare(stream->encoder, stream->dev);
+	return _workers_pool_init(stream);
+
+	error:
+		device_close(stream->dev);
+		return NULL;
+}
+
+static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index, unsigned captured_fps) {
 #	define PICTURE(_next) stream->dev->run->pictures[buf_index]._next

 	A_MUTEX_LOCK(&stream->mutex);
@@ -323,6 +353,7 @@ static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index)

 	stream->width = stream->dev->run->width;
 	stream->height = stream->dev->run->height;
+	stream->captured_fps = captured_fps;
 	atomic_store(&stream->updated, true);

 	A_MUTEX_UNLOCK(&stream->mutex);
@@ -330,118 +361,94 @@ static void _stream_expose_picture(struct stream_t *stream, unsigned buf_index)
 #	undef PICTURE
 }

-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 *_workers_pool_init(struct stream_t *stream) {
+	struct _workers_pool_t *pool;

-	for (unsigned number = 0; number < dev->run->n_workers; ++number) {
-#		define WORKER(_next) pool->workers[number]._next
+	LOG_INFO("Creating pool with %u workers ...", stream->dev->run->n_workers);

-		A_MUTEX_LOCK(&WORKER(last_comp_time_mutex));
-		if (WORKER(last_comp_time) > 0) {
-			sum_comp_time += WORKER(last_comp_time);
-		}
-		A_MUTEX_UNLOCK(&WORKER(last_comp_time_mutex));
+	A_CALLOC(pool, 1);

-#		undef WORKER
-	}
-	avg_comp_time = sum_comp_time / dev->run->n_workers; // Среднее время работы воркеров
-
-	min_delay = avg_comp_time / dev->run->n_workers; // Среднее время работы размазывается на N воркеров
-
-	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 stream_t *stream, struct workers_pool_t *pool) {
-	int retval = -1;
-
-	LOG_DEBUG("%s: stream->proc->stop = %d", __FUNCTION__, atomic_load(&stream->proc->stop));
-	while (!atomic_load(&stream->proc->stop)) {
-		if ((retval = _stream_init(stream, pool)) < 0) {
-			LOG_INFO("Sleeping %u seconds before new stream init ...", stream->dev->error_delay);
-			sleep(stream->dev->error_delay);
-		} else {
-			break;
-		}
-	}
-	return retval;
-}
-
-static int _stream_init(struct stream_t *stream, struct workers_pool_t *pool) {
-	_stream_destroy_workers(stream, pool);
-	device_switch_capturing(stream->dev, false);
-	device_close(stream->dev);
-
-	SEP_INFO('=');
-
-	if (device_open(stream->dev) < 0) {
-		goto error;
-	}
-	if (device_switch_capturing(stream->dev, true) < 0) {
-		goto error;
-	}
-
-	encoder_prepare(pool->encoder, stream->dev);
-
-	_stream_init_workers(stream, pool);
-
-	return 0;
-
-	error:
-		device_close(stream->dev);
-		return -1;
-}
-
-static void _stream_init_workers(struct stream_t *stream, struct workers_pool_t *pool) {
-	LOG_INFO("Spawning %u workers ...", stream->dev->run->n_workers);
-
-	atomic_store(&pool->workers_stop, false);
-	A_CALLOC(pool->workers, stream->dev->run->n_workers);
+	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);

-	for (unsigned number = 0; number < stream->dev->run->n_workers; ++number) {
-#		define WORKER(_next)	pool->workers[number]._next
+	atomic_init(&pool->workers_stop, false);

-		pool->free_workers += 1;
+	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(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(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)	= pool->encoder;
+		WORKER(dev) = stream->dev;
+		WORKER(encoder) = stream->encoder;

-		A_THREAD_CREATE(&WORKER(tid), _stream_worker_thread, (void *)&(pool->workers[number]));
+		A_THREAD_CREATE(&WORKER(tid), _worker_thread, (void *)&(pool->workers[number]));
+
+		pool->free_workers += 1;

 #		undef WORKER
 	}
+	return pool;
 }

-static void *_stream_worker_thread(void *v_worker) {
-	struct worker_t *worker = (struct worker_t *)v_worker;
+static void _workers_pool_destroy(struct _workers_pool_t *pool) {
+	LOG_INFO("Destroying workers pool ...");
+
+	atomic_store(&pool->workers_stop, true);
+	for (unsigned number = 0; number < pool->n_workers; ++number) {
+#		define WORKER(_next) pool->workers[number]._next
+
+		A_MUTEX_LOCK(&WORKER(has_job_mutex));
+		atomic_store(&WORKER(has_job), true); // Final job: die
+		A_MUTEX_UNLOCK(&WORKER(has_job_mutex));
+		A_COND_SIGNAL(&WORKER(has_job_cond));
+
+		A_THREAD_JOIN(WORKER(tid));
+		A_MUTEX_DESTROY(&WORKER(has_job_mutex));
+		A_COND_DESTROY(&WORKER(has_job_cond));
+
+#		undef WORKER
+	}
+
+	A_MUTEX_DESTROY(&pool->free_workers_mutex);
+	A_COND_DESTROY(&pool->free_workers_cond);
+
+	free(pool->workers);
+	free(pool);
+}
+
+static void *_worker_thread(void *v_worker) {
+	struct _worker_t *worker = (struct _worker_t *)v_worker;

 	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);
@@ -451,24 +458,22 @@ static void *_stream_worker_thread(void *v_worker) {

 			LOG_DEBUG("Worker %u compressing JPEG from buffer %u ...", worker->number, worker->buf_index);

-			PICTURE(encode_begin_time) = get_now_monotonic();
+#			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 = true;
+				worker->job_failed = false;
 			}
-			PICTURE(encode_end_time) = get_now_monotonic();

 			if (device_release_buffer(worker->dev, worker->buf_index) == 0) {
 				worker->job_start_time = PICTURE(encode_begin_time);
 				atomic_store(&worker->has_job, false);

-				long double last_comp_time = PICTURE(encode_end_time) - worker->job_start_time;
+				worker->last_comp_time = PICTURE(encode_end_time) - worker->job_start_time;

-				A_MUTEX_LOCK(&worker->last_comp_time_mutex);
-				worker->last_comp_time = last_comp_time;
-				A_MUTEX_UNLOCK(&worker->last_comp_time_mutex);
-
-				LOG_VERBOSE("Compressed JPEG size=%zu; time=%0.3Lf; worker=%u; buffer=%u",
-					PICTURE(used), last_comp_time, worker->number, worker->buf_index);
+				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);
@@ -484,34 +489,87 @@ static void *_stream_worker_thread(void *v_worker) {
 	}

 	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 stream_t *stream, 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;

-		atomic_store(&pool->workers_stop, true);
-		for (unsigned number = 0; number < stream->dev->run->n_workers; ++number) {
-#			define WORKER(_next) pool->workers[number]._next
+	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_MUTEX_LOCK(&WORKER(has_job_mutex));
-			atomic_store(&WORKER(has_job), true); // Final job: die
-			A_MUTEX_UNLOCK(&WORKER(has_job_mutex));
-			A_COND_SIGNAL(&WORKER(has_job_cond));
-
-			A_THREAD_JOIN(WORKER(tid));
-			A_MUTEX_DESTROY(&WORKER(has_job_mutex));
-			A_COND_DESTROY(&WORKER(has_job_cond));
-
-#			undef WORKER
+	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;
+			}
 		}
-
-		A_MUTEX_DESTROY(&pool->free_workers_mutex);
-		A_COND_DESTROY(&pool->free_workers_cond);
-
-		free(pool->workers);
+		assert(ready_worker != NULL);
+		ready_worker->job_timely = false; // Освободился воркер, получивший задание позже (или самый первый при самом первом захвате)
 	}
-	pool->free_workers = 0;
-	pool->workers = NULL;
+	return ready_worker;
+}
+
+static void _workers_pool_assign(struct _workers_pool_t *pool, struct _worker_t *ready_worker, unsigned buf_index) {
+	if (pool->oldest_worker == NULL) {
+		pool->oldest_worker = ready_worker;
+		pool->latest_worker = pool->oldest_worker;
+	} else {
+		if (ready_worker->order_next) {
+			ready_worker->order_next->order_prev = ready_worker->order_prev;
+		}
+		if (ready_worker->order_prev) {
+			ready_worker->order_prev->order_next = ready_worker->order_next;
+		}
+		ready_worker->order_prev = pool->latest_worker;
+		pool->latest_worker->order_next = ready_worker;
+		pool->latest_worker = ready_worker;
+	}
+	pool->latest_worker->order_next = NULL;
+
+	A_MUTEX_LOCK(&ready_worker->has_job_mutex);
+	ready_worker->buf_index = buf_index;
+	atomic_store(&ready_worker->has_job, true);
+	A_MUTEX_UNLOCK(&ready_worker->has_job_mutex);
+	A_COND_SIGNAL(&ready_worker->has_job_cond);
+
+	A_MUTEX_LOCK(&pool->free_workers_mutex);
+	pool->free_workers -= 1;
+	A_MUTEX_UNLOCK(&pool->free_workers_mutex);
+
+	LOG_DEBUG("Assigned new frame in buffer %u to worker %u", buf_index, ready_worker->number);
+}
+
+static long double _workers_pool_get_fluency_delay(struct _workers_pool_t *pool, struct _worker_t *ready_worker) {
+	long double approx_comp_time;
+	long double min_delay;
+
+	approx_comp_time = pool->approx_comp_time * 0.9 + ready_worker->last_comp_time * 0.1;
+
+	LOG_VERBOSE("Correcting approx_comp_time: %.3Lf -> %.3Lf (last_comp_time=%.3Lf)",
+		pool->approx_comp_time, approx_comp_time, ready_worker->last_comp_time);
+
+	pool->approx_comp_time = approx_comp_time;
+
+	min_delay = pool->approx_comp_time / pool->n_workers; // Среднее время работы размазывается на N воркеров
+
+	if (pool->desired_frames_interval > 0 && min_delay > 0 && pool->desired_frames_interval > min_delay) {
+		// Искусственное время задержки на основе желаемого FPS, если включен --desired-fps
+		return pool->desired_frames_interval;
+	}
+	return min_delay;
 }
--- a/src/stream.h
+++ b/src/stream.h
@@ -22,53 +22,12 @@

 #pragma once

-#include <stdbool.h>
 #include <stdatomic.h>

-#include <pthread.h>
-
 #include "device.h"
 #include "encoder.h"


-struct worker_t {
-	pthread_t			tid;
-	unsigned			number;
-	atomic_bool			*proc_stop;
-	atomic_bool			*workers_stop;
-
-	pthread_mutex_t		last_comp_time_mutex;
-	long double			last_comp_time;
-
-	pthread_mutex_t		has_job_mutex;
-	int					buf_index;
-	atomic_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		*order_prev;
-	struct worker_t		*order_next;
-
-	struct device_t		*dev;
-	struct encoder_t	*encoder;
-};
-
-struct workers_pool_t {
-	struct worker_t		*workers;
-	atomic_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;
--- a/tools/common.py
+++ b/tools/common.py
@@ -25,8 +25,7 @@ import textwrap


 # =====
-def get_prepend() -> str:
-    return textwrap.dedent("""
+C_PREPEND = textwrap.dedent("""
        /*****************************************************************************
        #                                                                            #
        #    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
--- a/tools/make-html-h.py
+++ b/tools/make-html-h.py
@@ -29,24 +29,25 @@ import common

 # =====
 def main() -> None:
-    assert len(sys.argv) == 4, "%s <file.html> <file.h> <name>" % (sys.argv[0])
+    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(html_path, "r") as html_file:
-        text = html_file.read()
+        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")
+    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 = "const char HTML_%s_PAGE[] = \" \\\n%s\n\";\n" % (name, text)
-    text = common.get_prepend() + "\n#include \"../../config.h\"\n\n\n" + text
+
+    text = f"{common.C_PREPEND}\n#include \"../../config.h\"\n\n\n"
+    text += f"const char HTML_{name}_PAGE[] = \" \\\n{html}\n\";\n"

    with open(header_path, "w") as header_file:
        header_file.write(text)
--- a/tools/make-jpeg-h.py
+++ b/tools/make-jpeg-h.py
@@ -60,7 +60,7 @@ def _get_jpeg_size(data: bytes) -> Tuple[int, int]:

 # =====
 def main() -> None:
-    assert len(sys.argv) == 4, "%s <file.jpeg> <file.h> <name>" % (sys.argv[0])
+    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]
@@ -70,17 +70,18 @@ def main() -> None:

    (width, height) = _get_jpeg_size(jpeg_data)

-    rows: List[List[str]] = [[]]
-    for ch in jpeg_data:
-        if len(rows[-1]) > 20:
-            rows.append([])
-        rows[-1].append("0x%.2X" % (ch))
+    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 = ",\n\t".join(", ".join(row) for row in rows)
-    text = "const unsigned char %s_JPEG_DATA[] = {\n\t%s\n};\n" % (name, text)
-    text = "const unsigned %s_JPEG_HEIGHT = %d;\n\n" % (name, height) + text
-    text = "const unsigned %s_JPEG_WIDTH = %d;\n" % (name, width) + text
-    text = common.get_prepend() + "\n\n" + text
+    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)
Author	SHA1	Message	Date
Devaev Maxim	16d5c81c22	Bump version: 1.0 → 1.1	2019-09-01 22:43:13 +03:00
Devaev Maxim	58e3a77a79	changed upstream url	2019-09-01 22:42:58 +03:00
Devaev Maxim	16105db7a0	refactoring	2019-07-27 18:22:08 +03:00
Devaev Maxim	6e307b1ef4	Bump version: 0.81 → 1.0	2019-07-13 07:15:28 +03:00
Devaev Maxim	554491ff19	messages refactoring	2019-07-13 07:14:33 +03:00
Devaev Maxim	fcd70c3166	Bump version: 0.80 → 0.81	2019-07-13 01:06:35 +03:00
Devaev Maxim	aaed14e9de	wider fps and resolution range	2019-07-13 01:06:21 +03:00
Devaev Maxim	76ba25607b	Bump version: 0.79 → 0.80	2019-07-13 00:30:13 +03:00
Devaev Maxim	1d8dedea85	--glitched-resolutions	2019-07-12 23:03:42 +03:00
Devaev Maxim	dfe8245181	refactoring	2019-07-12 19:09:54 +03:00
Devaev Maxim	50569a53a0	show gpio feature in version	2019-07-12 05:07:35 +03:00
Devaev Maxim	6ace44e4de	refactoring	2019-07-11 19:40:42 +03:00
Devaev Maxim	c4a5eea75b	--(fake-)resolution instead of --(fake-)width/height	2019-07-11 16:48:33 +03:00
Devaev Maxim	87de066369	refactoring	2019-07-10 07:08:29 +03:00
Devaev Maxim	c3c15b16bf	WITH_OMX_ENCODER -> WITH_OMX	2019-07-10 02:20:46 +03:00
Devaev Maxim	e6dfe3d2b7	gpio	2019-07-09 20:11:41 +03:00
Devaev Maxim	fe8699b7f3	log_level = LOG_LEVEL_INFO	2019-07-03 00:26:55 +03:00
Devaev Maxim	c751e4ff08	Bump version: 0.78 → 0.79	2019-07-01 02:47:22 +03:00
Devaev Maxim	99a00ca57c	approx_comp_time	2019-07-01 02:20:13 +03:00
Devaev Maxim	c009a7efe4	Revert "fluency synchronization" This reverts commit `291d7431b0`.	2019-06-30 06:37:24 +03:00
Devaev Maxim	291d7431b0	fluency synchronization	2019-06-29 16:30:43 +03:00
Devaev Maxim	a1cd490fdf	using desired_frames_interval instead of soft_delay	2019-06-29 07:02:21 +03:00
Devaev Maxim	7a85774085	fixed mutex routine	2019-06-29 06:59:16 +03:00
Devaev Maxim	2ed3c4815b	f-strings	2019-06-28 06:27:46 +03:00
Devaev Maxim	724c6e118f	() -> (void)	2019-06-28 05:15:24 +03:00
Devaev Maxim	da3a3adc65	fixed includes order	2019-06-28 05:00:49 +03:00
Devaev Maxim	32013a6360	refactoring	2019-06-27 05:10:19 +03:00
Devaev Maxim	16a2495766	messages refactoring	2019-06-13 14:37:03 +03:00
Devaev Maxim	05246706f0	Bump version: 0.77 → 0.78	2019-06-02 21:07:18 +03:00
Devaev Maxim	9355055a7f	Revert "fluency delay based on involved workers counter" This reverts commit `9f16de13fe`.	2019-06-02 21:06:30 +03:00
Devaev Maxim	9f16de13fe	fluency delay based on involved workers counter	2019-06-02 20:23:39 +03:00
Devaev Maxim	36a987fb9d	locked captured_fps	2019-06-02 19:35:53 +03:00
Devaev Maxim	652397f569	refactoring	2019-06-02 16:31:50 +03:00
Devaev Maxim	3333fc56a3	refactoring	2019-06-02 16:20:30 +03:00
Devaev Maxim	47378a17db	refactoring	2019-06-02 15:22:34 +03:00
Devaev Maxim	5f320786f5	fixed workers cleanup on restart	2019-06-01 05:31:44 +03:00
Devaev Maxim	498c6e1f5d	refactoring	2019-06-01 05:00:09 +03:00
Devaev Maxim	6c09adc689	free_worker -> ready_worker	2019-06-01 04:58:01 +03:00
Devaev Maxim	8bf7ac3005	refactoring	2019-06-01 04:47:51 +03:00
Devaev Maxim	6aebd7167e	config.mk	2019-05-31 01:02:03 +03:00
Devaev Maxim	3f03575222	refactoring	2019-05-30 06:53:01 +03:00
Devaev Maxim	9ca43f17a3	debug workers using gpio on rpi	2019-05-26 22:32:51 +03:00
Devaev Maxim	66ef566c9a	Makefile: on/off WITH_* options	2019-05-26 18:47:53 +03:00
Devaev Maxim	07ecc5b0a0	Bump version: 0.76 → 0.77	2019-05-26 06:03:59 +03:00
Devaev Maxim	8d19711f2c	fixed pkgbuild	2019-05-26 06:03:48 +03:00
Devaev Maxim	c94117ae1e	Bump version: 0.75 → 0.76	2019-05-26 05:55:48 +03:00
Devaev Maxim	06a80df708	More flexible build	2019-05-26 05:55:35 +03:00
Devaev Maxim	13dff256c8	workers by number of cores	2019-05-25 00:52:49 +03:00
Devaev Maxim	07e9dbc0f7	fixed gcc options ordering	2019-05-24 20:13:09 +03:00
Devaev Maxim	c83dddbf0b	fixed indent	2019-05-18 23:51:14 +03:00
Devaev Maxim	5672d1aa75	Bump version: 0.74 → 0.75	2019-05-18 18:24:32 +03:00
Devaev Maxim	078097efec	Added links to FreeBSD port	2019-05-18 18:22:37 +03:00
Devaev Maxim	3cd8338886	Issue #6 : make install-strip and make uninstall	2019-05-18 17:58:23 +03:00
Maxim Devaev	d2b57cc7d5	Update README.md	2019-05-18 17:25:42 +03:00
Maxim Devaev	2c4f59c87a	Update README.ru.md	2019-05-18 17:24:53 +03:00
Devaev Maxim	36eb7eeb76	minor help fix	2019-05-18 16:35:10 +03:00
Devaev Maxim	3b6544db8a	cpu/encoder: removed TODO about jpeg error handling	2019-05-18 02:12:18 +03:00
Devaev Maxim	8033ab23ed	Bump version: 0.73 → 0.74	2019-05-17 17:15:17 +03:00
Devaev Maxim	ddb3db8b20	Issue #5 : Added libevent version check	2019-05-17 16:57:53 +03:00
Devaev Maxim	b3c8071edb	Bump version: 0.72 → 0.73	2019-05-09 18:51:27 +03:00
Devaev Maxim	bc70faae09	fix	2019-05-05 04:26:25 +03:00
Devaev Maxim	ae7c4c91e0	Bump version: 0.71 → 0.72	2019-05-03 01:49:44 +03:00
Devaev Maxim	613baa4e1e	better unix socket handling	2019-05-03 00:10:48 +03:00