Bump version: 3.16 → 3.17

Give V4L2_PIX_FMT_MJPEG an unique name

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 3.13
+current_version = 3.17
 parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
 serialize = 
 	{major}.{minor}

README.md

@@ -25,7 +25,7 @@
 
 Footnotes:
   * ```1``` Long before µStreamer, I made a [patch](https://github.com/jacksonliam/mjpg-streamer/pull/164) to add DV-timings support to mjpg-streamer and to keep it from hanging up no device disconnection. Alas, the patch is far from perfect and I can't guarantee it will work every time - mjpg-streamer's source code is very complicated and its structure is hard to understand. With this in mind, along with needing multithreading and JPEG hardware acceleration in the future, I decided to make my own stream server from scratch instead of supporting legacy code.
-  
+
   * ```2``` This feature allows to cut down outgoing traffic several-fold when streaming HDMI, but it increases CPU usage a little bit. The idea is that HDMI is a fully digital interface and each captured frame can be identical to the previous one byte-wise. There's no need to stream the same image over the net several times a second. With the `--drop-same-frames=20` option enabled, µStreamer will drop all the matching frames (with a limit of 20 in a row). Each new frame is matched with the previous one first by length, then using ```memcmp()```.
 
 -----
@@ -39,7 +39,7 @@ You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support,
 * Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
 * Raspbian: `sudo apt install libevent-dev libjpeg8-dev uuid-dev libbsd-dev`. Add `libraspberrypi-dev` for `WITH_OMX=1` and `libgpiod` for `WITH_GPIO=1`.
 * Debian: `sudo apt install build-essential libevent-dev libjpeg62-turbo-dev uuid-dev libbsd-dev`.
-* Ubuntu 20.04 x86_64: `sudo apt install build-essential libevent-dev libjpeg62-dev uuid-dev libbsd-dev make gcc libjpeg8 libjpeg-turbo8 libuuid1 libbsd0`.
+* Ubuntu 20.04 x86_64: `sudo apt install build-essential libevent-dev libjpeg-dev libjpeg62-dev uuid-dev libbsd-dev make gcc libjpeg8 libjpeg-turbo8 libuuid1 libbsd0`.
 
 On Raspberry Pi you can build the program with OpenMAX IL. To do this pass option ```WITH_OMX=1``` to ```make```. To enable GPIO support install [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) and pass option ```WITH_GPIO=1```. If the compiler reports about a missing function ```pthread_get_name_np()``` (or similar), add option ```WITH_PTHREAD_NP=0``` (it's enabled by default). For the similar error with ```setproctitle()``` add option ```WITH_SETPROCTITLE=0```.
 
@@ -50,7 +50,7 @@ $ make
 $ ./ustreamer --help
 ```
 
-AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer. It should compile automatically with OpenMAX IL on Raspberry Pi, if the corresponding headers are present in ```/opt/vc/include```.  
+AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer. It should compile automatically with OpenMAX IL on Raspberry Pi, if the corresponding headers are present in ```/opt/vc/include```.
 FreeBSD port: https://www.freshports.org/multimedia/ustreamer.
 
 -----
@@ -77,6 +77,22 @@ $ ./ustreamer \
 
 You can always view the full list of options with ```ustreamer --help```.
 
+-----
+# Raspberry Pi Camera Example
+Example usage for the Raspberry Pi v1 camera:
+```bash
+$ sudo modprobe bcm2835-v4l2
+$ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
+```
+
+:exclamation: Please note that newer camera models have a different maximum resolution. You can see the supported resolutions at the [PiCamera documentation](https://picamera.readthedocs.io/en/release-1.13/fov.html#sensor-modes).
+
+:exclamation: If you get a poor framerate, it could be that the camera is switched to photo mode, which produces a low framerate (but a higher quality picture). This is because `bcm2835-v4l2` switches to photo mode at resolutions higher than `1280x720`. To work around this, pass the `max_video_width` and `max_video_height` module parameters like so:
+
+```bash
+$ modprobe bcm2835-v4l2 max_video_width=2592 max_video_height=1944
+```
+
 -----
 # See also
 * [Running uStreamer via systemd service](https://github.com/pikvm/ustreamer/issues/16).

README.ru.md

@@ -25,7 +25,7 @@
 
 Сносочки:
   * ```1``` Еще до написания µStreamer, я запилил [патч](https://github.com/jacksonliam/mjpg-streamer/pull/164), добавляющий в mjpg-streamer поддержку DV-таймингов и предотвращающий его зависание при отключении устройства. Однако патч, увы, далек от совершенства и я не гарантирую его стопроцентную работоспособность, поскольку код mjpg-streamer чрезвычайно запутан и очень плохо структурирован. Учитывая это, а также то, что в дальнейшем мне потребовались многопоточность и аппаратное кодирование JPEG, было принято решение написать свой стрим-сервер с нуля, чтобы не тратить силы на поддержку лишнего легаси.
-  
+
   * ```2``` Это фича позволяет в несколько раз снизить объем исходящего трафика при трансляции HDMI, однако немного увеличивает загрузку процессора. Суть в том, что HDMI - полностью цифровой интерфейс, и новый захваченный фрейм может быть идентичен предыдущему в точности до байта. В этом случае нет нужды передавать одну и ту же картинку по сети несколько раз в секунду. При использовании опции `--drop-same-frames=20`, µStreamer будет дропать все одинаковые фреймы, но не более 20 подряд. Новый фрейм сравнивается с предыдущим сначала по длине, а затем помощью ```memcmp()```.
 
 -----
@@ -39,7 +39,7 @@
 * Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
 * Raspbian: `sudo apt install libevent-dev libjpeg8-dev uuid-dev libbsd-dev`.  Добавьте `libraspberrypi-dev` для сборки с `WITH_OMX=1` и `libgpiod` для `WITH_GPIO=1`.
 * Debian: `sudo apt install build-essential libevent-dev libjpeg62-turbo-dev uuid-dev libbsd-dev`.
-* Ubuntu 20.04 x86_64: `sudo apt install build-essential libevent-dev libjpeg62-dev uuid-dev libbsd-dev make gcc libjpeg8 libjpeg-turbo8 libuuid1 libbsd0`.
+* Ubuntu 20.04 x86_64: `sudo apt install build-essential libevent-dev libjpeg-dev libjpeg62-dev uuid-dev libbsd-dev make gcc libjpeg8 libjpeg-turbo8 libuuid1 libbsd0`.
 
 На Raspberry Pi программу можно собрать с поддержкой OpenMAX IL. Для этого передайте ```make``` параметр ```WITH_OMX=1```. Для включения сборки с поддержкой GPIO установите [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) и добавьте параметр ```WITH_GPIO=1```. Если при сборке компилятор ругается на отсутствие функции ```pthread_get_name_np()``` или другой подобной, добавьте параметр ```WITH_PTHREAD_NP=0``` (по умолчанию он включен). При аналогичной ошибке с функцией ```setproctitle()``` добавьте параметр ```WITH_SETPROCTITLE=0```.
 
@@ -77,6 +77,22 @@ $ ./ustreamer \
 
 За полным списком опций обращайтесь ко встроенной справке: ```ustreamer --help```.
 
+-----
+# Камера Raspberry Pi
+Пример использования камеры Raspberry Pi v1:
+```bash
+$ sudo modprobe bcm2835-v4l2
+$ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
+```
+
+:exclamation: Обратите внимание что боле новые модели камеры имеют другое максимальное разрешение. Список поддерживаемых разрешений можно найти в [документации PiCamera](https://picamera.readthedocs.io/en/release-1.13/fov.html#sensor-modes).
+
+:exclamation: Если камера выдает низкий фреймрейт, возможно что она работает в фото-режиме, где производит более низкий фпс, но более качественную кратинку. Это происходит потому что `bcm2835-v4l2` переключает камеру в фото-режим на разрешениях выше `1280x720`. Чтобы обойти это, передайте параметры `max_video_width` и `max_video_height` при загрузке модуля, например:
+
+```bash
+$ modprobe bcm2835-v4l2 max_video_width=2592 max_video_height=1944
+```
+
 -----
 # Смотрите также
 * [Запуск с помощью systemd-сервиса](https://github.com/pikvm/ustreamer/issues/16).

linters/Dockerfile

@@ -1,4 +1,4 @@
-FROM archlinux/base
+FROM archlinux/archlinux:base-devel
 
 RUN mkdir -p /etc/pacman.d/hooks \
 	&& ln -s /dev/null /etc/pacman.d/hooks/30-systemd-tmpfiles.hook
@@ -7,8 +7,6 @@ RUN echo "Server = http://mirror.yandex.ru/archlinux/\$repo/os/\$arch" > /etc/pa
 
 RUN pacman -Syu --noconfirm \
 	&& pacman -S --needed --noconfirm \
-		base \
-		base-devel \
 		vim \
 		git \
 		libjpeg \
@@ -20,7 +18,8 @@ RUN pacman -Syu --noconfirm \
 		python-tox \
 		cppcheck \
 		npm \
-	&& (pacman -Sc --noconfirm || true)
+	&& (pacman -Sc --noconfirm || true) \
+	&& rm -rf /var/cache/pacman/pkg/*
 
 RUN npm install htmlhint -g
 

man/ustreamer-dump.1

@@ -1,6 +1,6 @@
 .\" Manpage for ustreamer-dump.
 .\" Open an issue or pull request to https://github.com/pikvm/ustreamer to correct errors or typos
-.TH USTREAMER-DUMP 1 "version 3.13" "January 2021"
+.TH USTREAMER-DUMP 1 "version 3.17" "January 2021"
 
 .SH NAME
 ustreamer-dump \- Dump uStreamer's memory sink to file

man/ustreamer.1

@@ -1,6 +1,6 @@
 .\" Manpage for ustreamer.
 .\" Open an issue or pull request to https://github.com/pikvm/ustreamer to correct errors or typos
-.TH USTREAMER 1 "version 3.13" "November 2020"
+.TH USTREAMER 1 "version 3.17" "November 2020"
 
 .SH NAME
 ustreamer \- stream MJPG video from any V4L2 device to the network
@@ -104,7 +104,7 @@ It doesn't do anything. Still here for compatibility. Required \fBWITH_OMX\fR fe
 Path to JPEG file that will be shown when the device is disconnected during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.
 .TP
 .BR \-K\ \fIsec ", " \-\-last\-as\-blank\ \fIsec
-Show the last frame received from the camera after it was disconnected, but no more than specified time (or endlessly if 0 is specified). If the device has not yet been online, display 'NO SIGNAL' or the image specified by option \-\-blank. Default: disabled.
+Show the last frame received from the camera after it was disconnected, but no more than specified time (or endlessly if 0 is specified). If the device has not yet been online, display 'NO SIGNAL' or the image specified by option \-\-blank. Note: currently this option has no effect on memory sinks. Default: disabled.
 .TP
 .BR \-l ", " \-\-slowdown
 Slowdown capturing to 1 FPS or less when no stream or sink clients are connected. Useful to reduce CPU consumption. Default: disabled.

pkg/arch/PKGBUILD

@@ -3,7 +3,7 @@
 
 
 pkgname=ustreamer
-pkgver=3.13
+pkgver=3.17
 pkgrel=1
 pkgdesc="Lightweight and fast MJPG-HTTP streamer"
 url="https://github.com/pikvm/ustreamer"

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=3.13
+PKG_VERSION:=3.17
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 

python/setup.py

@@ -6,7 +6,7 @@ from distutils.core import setup
 if __name__ == "__main__":
     setup(
         name="ustreamer",
-        version="3.13",
+        version="3.17",
         description="uStreamer tools",
         author="Maxim Devaev",
         author_email="mdevaev@gmail.com",

python/ustreamer.c

@@ -31,6 +31,7 @@ typedef struct {
 	unsigned stride;
 
 	bool online;
+	bool key;
 
 	long double	grab_ts;
 	long double	encode_begin_ts;
@@ -195,6 +196,7 @@ static int wait_frame(MemsinkObject *self) {
 						&& CMP(format)
 						&& CMP(stride)
 						&& CMP(online)
+						&& CMP(key)
 						&& (TMP(ts) + self->drop_same_frames > now)
 						&& !memcmp(TMP(data), MEM(data), MEM(used))
 					) {
@@ -249,6 +251,7 @@ static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUS
 	COPY(format);
 	COPY(stride);
 	COPY(online);
+	COPY(key);
 	COPY(grab_ts);
 	COPY(encode_begin_ts);
 	COPY(encode_end_ts);
@@ -291,6 +294,7 @@ static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUS
 	SET_NUMBER(format, Long, Long);
 	SET_NUMBER(stride, Long, Long);
 	SET_NUMBER(online, Long, Bool);
+	SET_NUMBER(key, Long, Bool);
 	SET_NUMBER(grab_ts, Double, Float);
 	SET_NUMBER(encode_begin_ts, Double, Float);
 	SET_NUMBER(encode_end_ts, Double, Float);

src/dump/main.c

@@ -213,6 +213,8 @@ static int _dump_sink(const char *sink_name, unsigned sink_timeout, _output_cont
 	unsigned fps_accum = 0;
 	long long fps_second = 0;
 
+	long double last_ts = 0;
+
 	while (!global_stop) {
 		int error = memsink_client_get(sink, frame);
 		if (error == 0) {
@@ -220,11 +222,12 @@ static int _dump_sink(const char *sink_name, unsigned sink_timeout, _output_cont
 			const long long now_second = floor_ms(now);
 
 			char fourcc_str[8];
-			LOG_VERBOSE("Frame: size=%zu, resolution=%ux%u, fourcc=%s, stride=%u, online=%d, latency=%.3Lf",
+			LOG_VERBOSE("Frame: size=%zu, res=%ux%u, fourcc=%s, stride=%u, online=%d, key=%d, latency=%.3Lf, diff=%.3Lf",
 				frame->used, frame->width, frame->height,
 				fourcc_to_string(frame->format, fourcc_str, 8),
-				frame->stride, frame->online,
-				now - frame->grab_ts);
+				frame->stride, frame->online, frame->key,
+				now - frame->grab_ts, (last_ts ? now - last_ts : 0));
+			last_ts = now;
 
 			LOG_DEBUG("       grab_ts=%.3Lf, encode_begin_ts=%.3Lf, encode_end_ts=%.3Lf",
 				frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts);

src/libs/config.h

@@ -23,5 +23,5 @@
 #pragma once
 
 #ifndef VERSION
-#	define VERSION "3.13"
+#	define VERSION "3.17"
 #endif

src/libs/frame.c

@@ -81,6 +81,7 @@ void frame_copy_meta(const frame_s *src, frame_s *dest) {
 	COPY(format);
 	COPY(stride);
 	COPY(online);
+	COPY(key);
 	COPY(grab_ts);
 	COPY(encode_begin_ts);
 	COPY(encode_end_ts);
@@ -98,6 +99,7 @@ bool frame_compare(const frame_s *a, const frame_s *b) {
 		&& CMP(format)
 		&& CMP(stride)
 		&& CMP(online)
+		&& CMP(key)
 		&& !memcmp(a->data, b->data, b->used)
 	);
 #	undef CMP

src/libs/frame.h

@@ -51,6 +51,7 @@ typedef struct {
 	// https://medium.com/@oleg.shipitko/what-does-stride-mean-in-image-processing-bba158a72bcd
 
 	bool online;
+	bool key;
 
 	long double	grab_ts;
 	long double	encode_begin_ts;

src/libs/memsink.c

@@ -109,7 +109,7 @@ bool memsink_server_check(memsink_s *sink, const frame_s *frame) {
 	sink->has_clients = (sink->mem->last_client_ts + sink->client_ttl > get_now_monotonic());
 
 #	define NEQ(_field) (sink->mem->_field != frame->_field)
-	bool retval = (sink->has_clients || NEQ(width) || NEQ(height) || NEQ(format) || NEQ(stride) || NEQ(online));
+	bool retval = (sink->has_clients || NEQ(width) || NEQ(height) || NEQ(format) || NEQ(stride) || NEQ(online) || NEQ(key));
 #	undef NEQ
 
 	if (flock(sink->fd, LOCK_UN) < 0) {
@@ -142,6 +142,7 @@ int memsink_server_put(memsink_s *sink, const frame_s *frame) {
 		COPY(format);
 		COPY(stride);
 		COPY(online);
+		COPY(key);
 		COPY(grab_ts);
 		COPY(encode_begin_ts);
 		COPY(encode_end_ts);
@@ -195,6 +196,7 @@ int memsink_client_get(memsink_s *sink, frame_s *frame) { // cppcheck-suppress u
 			COPY(format);
 			COPY(stride);
 			COPY(online);
+			COPY(key);
 			COPY(grab_ts);
 			COPY(encode_begin_ts);
 			COPY(encode_end_ts);

src/libs/memsinksh.h

@@ -29,7 +29,7 @@
 
 
 #define MEMSINK_MAGIC	((uint64_t)0xCAFEBABECAFEBABE)
-#define MEMSINK_VERSION	((uint32_t)1)
+#define MEMSINK_VERSION	((uint32_t)2)
 
 #ifndef CFG_MEMSINK_MAX_DATA
 #	define CFG_MEMSINK_MAX_DATA 33554432
@@ -49,6 +49,7 @@ typedef struct {
 	unsigned	format;
 	unsigned	stride;
 	bool		online;
+	bool		key;
 
 	long double	grab_ts;
 	long double	encode_begin_ts;

src/ustreamer/device.c

@@ -41,7 +41,7 @@ static const struct {
 	{"UYVY",	V4L2_PIX_FMT_UYVY},
 	{"RGB565",	V4L2_PIX_FMT_RGB565},
 	{"RGB24",	V4L2_PIX_FMT_RGB24},
-	{"JPEG",	V4L2_PIX_FMT_MJPEG},
+	{"MJPEG",	V4L2_PIX_FMT_MJPEG},
 	{"JPEG",	V4L2_PIX_FMT_JPEG},
 };
 

src/ustreamer/device.h

@@ -64,7 +64,7 @@
 #define STANDARDS_STR		"PAL, NTSC, SECAM"
 
 #define FORMAT_UNKNOWN	-1
-#define FORMATS_STR		"YUYV, UYVY, RGB565, RGB24, JPEG"
+#define FORMATS_STR		"YUYV, UYVY, RGB565, RGB24, MJPEG, JPEG"
 
 #define IO_METHOD_UNKNOWN	-1
 #define IO_METHODS_STR		"MMAP, USERPTR"

src/ustreamer/encoders/omx/encoder.c

@@ -27,7 +27,6 @@ static const OMX_U32 _INPUT_PORT = 340;
 static const OMX_U32 _OUTPUT_PORT = 341;
 
 
-static int _vcos_semwait(VCOS_SEMAPHORE_T *sem);
 static int _omx_init_component(omx_encoder_s *omx);
 static int _omx_init_disable_ports(omx_encoder_s *omx);
 static int _omx_setup_input(omx_encoder_s *omx, const frame_s *frame);
@@ -194,7 +193,7 @@ int omx_encoder_compress(omx_encoder_s *omx, const frame_s *src, frame_s *dest)
 			}
 		}
 
-		if (_vcos_semwait(&omx->handler_sem) != 0) {
+		if (vcos_my_semwait("", &omx->handler_sem, 1) < 0) {
 			return -1;
 		}
 	}
@@ -204,42 +203,6 @@ int omx_encoder_compress(omx_encoder_s *omx, const frame_s *src, frame_s *dest)
 	return 0;
 }
 
-static int _vcos_semwait(VCOS_SEMAPHORE_T *sem) {
-	// vcos_semaphore_wait() can wait infinite
-	// vcos_semaphore_wait_timeout() is broken by design:
-	//   - https://github.com/pikvm/ustreamer/issues/56
-	//   - https://github.com/raspberrypi/userland/issues/658
-	// CFG_OMX_SEMWAIT_TIMEOUT is ugly busyloop
-	// Три стула.
-
-#	ifdef CFG_OMX_SEMWAIT_TIMEOUT
-	long double deadline_ts = get_now_monotonic() + (long double)CFG_OMX_SEMWAIT_TIMEOUT; // Seconds
-	VCOS_STATUS_T sem_status;
-
-	while (true) {
-		sem_status = vcos_semaphore_trywait(sem);
-		if (sem_status == VCOS_SUCCESS) {
-			return 0;
-		} else if (sem_status != VCOS_EAGAIN || get_now_monotonic() > deadline_ts) {
-			break;
-		}
-		if (usleep(1000) < 0) {
-			break;
-		}
-	}
-
-	switch (sem_status) {
-		case VCOS_EAGAIN: LOG_ERROR("Can't wait VCOS semaphore: EAGAIN (timeout)"); break;
-		case VCOS_EINVAL: LOG_ERROR("Can't wait VCOS semaphore: EINVAL"); break;
-		default: LOG_ERROR("Can't wait VCOS semaphore: %d", sem_status); break;
-	}
-	return -1;
-
-#	else
-	return (vcos_semaphore_wait(sem) == VCOS_SUCCESS ? 0 : -1);
-#	endif
-}
-
 static int _omx_init_component(omx_encoder_s *omx) {
 	OMX_ERRORTYPE error;
 

src/ustreamer/encoders/omx/encoder.h

@@ -39,6 +39,7 @@
 #include "../../../libs/logging.h"
 #include "../../../libs/frame.h"
 
+#include "vcos.h"
 #include "formatters.h"
 #include "component.h"
 

src/ustreamer/encoders/omx/vcos.c

@@ -0,0 +1,55 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018-2021  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "vcos.h"
+
+
+int vcos_my_semwait(const char *prefix, VCOS_SEMAPHORE_T *sem, long double timeout) {
+	// vcos_semaphore_wait() can wait infinite
+	// vcos_semaphore_wait_timeout() is broken by design:
+	//   - https://github.com/pikvm/ustreamer/issues/56
+	//   - https://github.com/raspberrypi/userland/issues/658
+	//   - The current approach is an ugly busyloop
+	// Три стула.
+
+	long double deadline_ts = get_now_monotonic() + timeout;
+	VCOS_STATUS_T sem_status;
+
+	while (true) {
+		sem_status = vcos_semaphore_trywait(sem);
+		if (sem_status == VCOS_SUCCESS) {
+			return 0;
+		} else if (sem_status != VCOS_EAGAIN || get_now_monotonic() > deadline_ts) {
+			break;
+		}
+		if (usleep(1000) < 0) {
+			break;
+		}
+	}
+
+	switch (sem_status) {
+		case VCOS_EAGAIN: LOG_ERROR("%sCan't wait VCOS semaphore: EAGAIN (timeout)", prefix); break;
+		case VCOS_EINVAL: LOG_ERROR("%sCan't wait VCOS semaphore: EINVAL", prefix); break;
+		default: LOG_ERROR("%sCan't wait VCOS semaphore: %d", prefix, sem_status); break;
+	}
+	return -1;
+}

src/ustreamer/encoders/omx/vcos.h

@@ -0,0 +1,31 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018-2021  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include <interface/vcos/vcos_semaphore.h>
+
+#include "../../../libs/tools.h"
+#include "../../../libs/logging.h"
+
+
+int vcos_my_semwait(const char *prefix, VCOS_SEMAPHORE_T *sem, long double timeout);

src/ustreamer/h264/encoder.c

@@ -212,7 +212,8 @@ int h264_encoder_prepare(h264_encoder_s *enc, const frame_s *frame, bool zero_co
 		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_PEAK_RATE,		enc->bitrate * 1000);
 		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_MIN_QUANT,				16);
 		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_MAX_QUANT,				34);
-		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_FRAME_LIMIT_BITS,		1000000);
+		// Этот параметр с этим значением фризит кодирование изображения из черно-белой консоли
+		// SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_FRAME_LIMIT_BITS,		1000000);
 		SET_PORT_PARAM(output, uint32,	VIDEO_ENCODE_H264_AU_DELIMITERS,	MMAL_FALSE);
 	}
 
@@ -224,7 +225,7 @@ int h264_encoder_prepare(h264_encoder_s *enc, const frame_s *frame, bool zero_co
 
 	error:
 		_h264_encoder_cleanup(enc);
-		LOG_ERROR("H264: Encoder disabled due error (prepare)");
+		LOG_ERROR("H264: Encoder destroyed due an error (prepare)");
 		return -1;
 
 #	undef ENABLE_PORT
@@ -275,7 +276,7 @@ int h264_encoder_compress(h264_encoder_s *enc, const frame_s *src, int src_vcsm_
 
 	if (_h264_encoder_compress_raw(enc, src, src_vcsm_handle, dest, force_key) < 0) {
 		_h264_encoder_cleanup(enc);
-		LOG_ERROR("H264: Encoder disabled due error (compress)");
+		LOG_ERROR("H264: Encoder destroyed due an error (compress)");
 		return -1;
 	}
 
@@ -339,7 +340,9 @@ static int _h264_encoder_compress_raw(h264_encoder_s *enc, const frame_s *src, i
 
 		error = mmal_wrapper_buffer_get_full(enc->output_port, &out, 0);
 		if (error == MMAL_EAGAIN) {
-			vcos_semaphore_wait(&enc->handler_sem);
+			if (vcos_my_semwait("H264: ", &enc->handler_sem, 1) < 0) {
+				return -1;
+			}
 			continue;
 		} else if (error != MMAL_SUCCESS) {
 			LOG_ERROR_MMAL(error, "H264: Can't get MMAL output buffer");
@@ -347,6 +350,7 @@ static int _h264_encoder_compress_raw(h264_encoder_s *enc, const frame_s *src, i
 		}
 
 		frame_append_data(dest, out->data, out->length);
+		dest->key = out->flags & MMAL_BUFFER_HEADER_FLAG_KEYFRAME;
 
 		eos = out->flags & MMAL_BUFFER_HEADER_FLAG_EOS;
 		mmal_buffer_header_release(out);

src/ustreamer/h264/encoder.h

@@ -38,6 +38,7 @@
 #include "../../libs/tools.h"
 #include "../../libs/logging.h"
 #include "../../libs/frame.h"
+#include "../encoders/omx/vcos.h"
 
 
 typedef struct {

src/ustreamer/options.c

@@ -617,7 +617,8 @@ static void _help(FILE *fp, device_s *dev, encoder_s *enc, stream_s *stream, ser
 	SAY("    -K|--last-as-blank <sec>  ──────────── Show the last frame received from the camera after it was disconnected,");
 	SAY("                                           but no more than specified time (or endlessly if 0 is specified).");
 	SAY("                                           If the device has not yet been online, display 'NO SIGNAL' or the image");
-	SAY("                                           specified by option --blank. Default: disabled.\n");
+	SAY("                                           specified by option --blank. Default: disabled.");
+	SAY("                                           Note: currently this option has no effect on memory sinks.\n");
 	SAY("    -l|--slowdown  ─────────────────────── Slowdown capturing to 1 FPS or less when no stream or sink clients");
 	SAY("                                           are connected. Useful to reduce CPU consumption. Default: disabled.\n");
 	SAY("    --device-timeout <sec>  ────────────── Timeout for device querying. Default: %u.\n", dev->timeout);

src/ustreamer/stream.c

@@ -25,11 +25,25 @@
 
 static workers_pool_s *_stream_init_loop(stream_s *stream);
 static workers_pool_s *_stream_init_one(stream_s *stream);
-static bool _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned captured_fps);
+static void _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned captured_fps);
 
 
 #define RUN(_next) stream->run->_next
 
+#define SINK_PUT(_sink, _frame) { \
+		if (stream->_sink && memsink_server_check(stream->_sink, _frame)) {\
+			memsink_server_put(stream->_sink, _frame); \
+		} \
+	}
+
+#ifdef WITH_OMX
+#	define H264_PUT(_frame, _vcsm_handle, _force_key) { \
+			if (RUN(h264)) { \
+				h264_stream_process(RUN(h264), _frame, _vcsm_handle, _force_key); \
+			} \
+		}
+#endif
+
 
 stream_s *stream_init(device_s *dev, encoder_s *enc) {
 	stream_runtime_s *run;
@@ -194,16 +208,9 @@ void stream_loop(stream_s *stream) {
 							workers_pool_assign(pool, ready_wr);
 							LOG_DEBUG("Assigned new frame in buffer %d to worker %s", buf_index, ready_wr->name);
 
-							if (stream->raw_sink) {
-								if (memsink_server_check(stream->raw_sink, &hw->raw)) {
-									memsink_server_put(stream->raw_sink, &hw->raw);
-								}
-							}
-
+							SINK_PUT(raw_sink, &hw->raw);
 #							ifdef WITH_OMX
-							if (RUN(h264)) {
-								h264_stream_process(RUN(h264), &hw->raw, hw->vcsm_handle, h264_force_key);
-							}
+							H264_PUT(&hw->raw, hw->vcsm_handle, h264_force_key);
 #							endif
 						}
 					} else if (buf_index != -2) { // -2 for broken frame
@@ -253,18 +260,7 @@ static workers_pool_s *_stream_init_loop(stream_s *stream) {
 	LOG_DEBUG("%s: stream->run->stop=%d", __FUNCTION__, atomic_load(&RUN(stop)));
 
 	while (!atomic_load(&RUN(stop))) {
-		if (_stream_expose_frame(stream, NULL, 0)) {
-			if (stream->raw_sink) {
-				if (memsink_server_check(stream->raw_sink, stream->blank)) {
-					memsink_server_put(stream->raw_sink, stream->blank);
-				}
-			}
-#			ifdef WITH_OMX
-			if (RUN(h264)) {
-				h264_stream_process(RUN(h264), stream->blank, -1, false);
-			}
-#			endif
-		}
+		_stream_expose_frame(stream, NULL, 0);
 
 		if (access(stream->dev->path, R_OK|W_OK) < 0) {
 			if (access_error != errno) {
@@ -308,11 +304,10 @@ static workers_pool_s *_stream_init_one(stream_s *stream) {
 		return NULL;
 }
 
-static bool _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned captured_fps) {
+static void _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned captured_fps) {
 #	define VID(_next) RUN(video->_next)
 
 	frame_s *new = NULL;
-	bool changed = false;
 
 	A_MUTEX_LOCK(&VID(mutex));
 
@@ -322,7 +317,11 @@ static bool _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned capt
 		LOG_DEBUG("Exposed ALIVE video frame");
 
 	} else {
-		if (VID(frame->online)) { // Если переходим из online в offline
+		if (VID(frame->used == 0)) {
+			new = stream->blank; // Инициализация
+			RUN(last_as_blank_ts) = 0;
+
+		} else if (VID(frame->online)) { // Если переходим из online в offline
 			if (stream->last_as_blank < 0) { // Если last_as_blank выключен, просто покажем старую картинку
 				new = stream->blank;
 				LOG_INFO("Changed video frame to BLANK");
@@ -332,6 +331,7 @@ static bool _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned capt
 			} else {  // last_as_blank == 0 - показываем последний фрейм вечно
 				LOG_INFO("Freezed last ALIVE video frame forever");
 			}
+
 		} else if (stream->last_as_blank < 0) {
 			new = stream->blank;
 			// LOG_INFO("Changed video frame to BLANK");
@@ -350,26 +350,28 @@ static bool _stream_expose_frame(stream_s *stream, frame_s *frame, unsigned capt
 
 	if (new) {
 		frame_copy(new, VID(frame));
-		changed = true;
-	} else if (VID(frame->used) == 0) { // Инициализация
-		frame_copy(stream->blank, VID(frame));
-		frame = NULL;
-		changed = true;
 	}
-	VID(frame->online) = frame;
+	VID(frame->online) = (bool)frame;
 	VID(captured_fps) = captured_fps;
 	atomic_store(&VID(updated), true);
+
 	A_MUTEX_UNLOCK(&VID(mutex));
 
-	if (changed && stream->sink) {
-		if (memsink_server_check(stream->sink, VID(frame))) {
-			memsink_server_put(stream->sink, VID(frame));
-		}
-	}
+	new = (frame ? frame : stream->blank);
+	SINK_PUT(sink, new);
 
-	return changed;
+	if (frame == NULL) {
+		SINK_PUT(raw_sink, stream->blank);
+#		ifdef WITH_OMX
+		H264_PUT(stream->blank, -1, false);
+#		endif
+	}
 
 #	undef VID
 }
 
+#ifdef WITH_OMX
+#	undef H264_PUT
+#endif
+#undef SINK_PUT
 #undef RUN