Bump version: 6.3 → 6.4

(cherry picked from commit f3bfdb2fd74c0bb5249df3f21ab6daf0ec12318a)
Signed-off-by: Maxim Devaev <mdevaev@gmail.com>

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 5.31
+current_version = 6.4
 parse = (?P<major>\d+)\.(?P<minor>\d+)
 serialize = 
 	{major}.{minor}

.github/workflows/docker-alpine-image.yaml

@@ -35,7 +35,7 @@ jobs:
         uses: docker/metadata-action@v4
         with:
           images: |
-            ${{ secrets.DOCKERHUB_USERNAME }}/ustreamer,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            ${{ secrets.DOCKERHUB_REPO }}/ustreamer,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
             ghcr.io/${{ github.repository }},enable=${{ github.event_name != 'pull_request' }}
           tags: |
             type=ref,event=tag
@@ -66,7 +66,7 @@ jobs:
         uses: docker/build-push-action@v3
         with:
           context: .
-          platforms: linux/arm64,linux/amd64,linux/arm/v7
+          platforms: linux/arm64,linux/amd64,linux/arm/v6,linux/arm/v7
           file: pkg/docker/Dockerfile.alpine
       -
         name: Push

.gitignore

@@ -4,9 +4,10 @@
 /pkg/arch/src/
 /src/build/
 /python/build/
+/python/ustreamer.egg-info/
 /janus/build/
 /ustreamer
-/ustreamer-dump
+/ustreamer-*
 /config.mk
 vgcore.*
 *.sock

Makefile

@@ -9,9 +9,6 @@ PY ?= python3
 CFLAGS ?= -O3
 LDFLAGS ?=
 
-RPI_VC_HEADERS ?= /opt/vc/include
-RPI_VC_LIBS ?= /opt/vc/lib
-
 export
 
 _LINTERS_IMAGE ?= ustreamer-linters
@@ -22,6 +19,9 @@ define optbool
 $(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
 endef
 
+ifeq ($(V),)
+	ECHO = @
+endif
 
 # =====
 all:
@@ -36,18 +36,19 @@ endif
 
 apps:
 	$(MAKE) -C src
-	@ ln -sf src/ustreamer.bin ustreamer
-	@ ln -sf src/ustreamer-dump.bin ustreamer-dump
+	for i in src/*.bin; do \
+		test ! -x $$i || ln -sf $$i `basename $$i .bin`; \
+	done
 
 
 python:
 	$(MAKE) -C python
-	@ ln -sf python/build/lib.*/*.so .
+	$(ECHO) ln -sf python/build/lib.*/*.so .
 
 
 janus:
 	$(MAKE) -C janus
-	@ ln -sf janus/*.so .
+	$(ECHO) ln -sf janus/*.so .
 
 
 install: all
@@ -70,9 +71,8 @@ install-strip: install
 
 
 regen:
-	tools/$(MAKE)-jpeg-h.py src/ustreamer/data/blank.jpeg src/ustreamer/data/blank_jpeg.c BLANK
-	tools/$(MAKE)-ico-h.py src/ustreamer/data/favicon.ico src/ustreamer/data/favicon_ico.c FAVICON
-	tools/$(MAKE)-html-h.py src/ustreamer/data/index.html src/ustreamer/data/index_html.c INDEX
+	tools/make-ico-h.py src/ustreamer/data/favicon.ico src/ustreamer/data/favicon_ico.c FAVICON
+	tools/make-html-h.py src/ustreamer/data/index.html src/ustreamer/data/index_html.c INDEX
 
 
 release:
@@ -119,7 +119,7 @@ clean-all: linters clean
 
 clean:
 	rm -rf pkg/arch/pkg pkg/arch/src pkg/arch/v*.tar.gz pkg/arch/ustreamer-*.pkg.tar.{xz,zst}
-	rm -f ustreamer ustreamer-dump *.so
+	rm -f ustreamer ustreamer-* *.so
 	$(MAKE) -C src clean
 	$(MAKE) -C python clean
 	$(MAKE) -C janus clean

README.md

@@ -2,8 +2,6 @@
 [![CI](https://github.com/pikvm/ustreamer/workflows/CI/badge.svg)](https://github.com/pikvm/ustreamer/actions?query=workflow%3ACI)
 [![Discord](https://img.shields.io/discord/580094191938437144?logo=discord)](https://discord.gg/bpmXfz5)
 
-[[Русская версия]](README.ru.md)
-
 µStreamer is a lightweight and very quick server to stream [MJPEG](https://en.wikipedia.org/wiki/Motion_JPEG) video from any V4L2 device to the net. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc.
 µStreamer is a part of the [PiKVM](https://github.com/pikvm/pikvm) project designed to stream [VGA](https://www.amazon.com/dp/B0126O0RDC) and [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) screencast hardware data with the highest resolution and FPS possible.
 
@@ -34,16 +32,31 @@ Footnotes:
 If you're going to live-stream from your backyard webcam and need to control it, use mjpg-streamer. If you need a high-quality image with high FPS - µStreamer for the win.
 
 -----
-# Building
+# Installation
+
+## Building
+You need to download the µStreamer onto your system and build it from the sources.
+
+* AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer.
+* Fedora: https://src.fedoraproject.org/rpms/ustreamer.
+* Ubuntu: https://packages.ubuntu.com/jammy/ustreamer.
+* Debian: https://packages.debian.org/sid/ustreamer
+* FreeBSD port: https://www.freshports.org/multimedia/ustreamer.
+
+### Preconditions
 You'll need  ```make```, ```gcc```, ```libevent``` with ```pthreads``` support, ```libjpeg9```/```libjpeg-turbo``` and ```libbsd``` (only for Linux).
 
 * Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
-* Raspbian: `sudo apt install libevent-dev libjpeg8-dev libbsd-dev`. Add `libgpiod-dev` for `WITH_GPIO=1` and `libsystemd-dev` for `WITH_SYSTEMD=1` and `libasound2-dev libspeex-dev libspeexdsp-dev libopus-dev` for `WITH_JANUS=1`.
+* Raspberry OS Bullseye: `sudo apt install libevent-dev libjpeg62-turbo libbsd-dev`. Add `libgpiod-dev` for `WITH_GPIO=1` and `libsystemd-dev` for `WITH_SYSTEMD=1` and `libasound2-dev libspeex-dev libspeexdsp-dev libopus-dev` for `WITH_JANUS=1`.
+* Raspberry OS Bookworm: same as previous but replace `libjpeg62-turbo` to `libjpeg62-turbo-dev`.
 * Debian/Ubuntu: `sudo apt install build-essential libevent-dev libjpeg-dev libbsd-dev`.
 * Alpine: `sudo apk add libevent-dev libbsd-dev libjpeg-turbo-dev musl-dev`. Build with `WITH_PTHREAD_NP=0`.
 
 To enable GPIO support install [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) and pass option ```WITH_GPIO=1```. If the compiler reports about a missing function ```pthread_get_name_np()``` (or similar), add option ```WITH_PTHREAD_NP=0``` (it's enabled by default). For the similar error with ```setproctitle()``` add option ```WITH_SETPROCTITLE=0```.
 
+### Make
+The most convenient process is to clone the µStreamer Git repository onto your system. If you don't have Git installed and don't want to install it either, you can download and unzip the sources from GitHub using `wget https://github.com/pikvm/ustreamer/archive/refs/heads/master.zip`.
+
 ```
 $ git clone --depth=1 https://github.com/pikvm/ustreamer
 $ cd ustreamer
@@ -51,9 +64,15 @@ $ make
 $ ./ustreamer --help
 ```
 
-AUR has a package for Arch Linux: https://aur.archlinux.org/packages/ustreamer.
+## Update
+Assuming you have a µStreamer clone as discussed above you can update µStreamer as follows.
 
-FreeBSD port: https://www.freshports.org/multimedia/ustreamer.
+```
+$ cd ustreamer
+$ git pull
+$ make clean
+$ make
+```
 
 -----
 # Usage
@@ -66,13 +85,13 @@ Without arguments, ```ustreamer``` will try to open ```/dev/video0``` with 640x4
 
 :exclamation: Please note that since µStreamer v2.0 cross-domain requests were disabled by default for [security reasons](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS). To enable the old behavior, use the option `--allow-origin=\*`.
 
-The recommended way of running µStreamer with [Auvidea B101](https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=120702&start=400#p1339178) on Raspberry Pi:
-```bash
+The recommended way of running µStreamer with [TC358743-based capture device](https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=120702&start=400#p1339178) on Raspberry Pi:
+```
 $ ./ustreamer \
     --format=uyvy \ # Device input format
     --encoder=m2m-image \ # Hardware encoding on V4L2 M2M driver
     --workers=3 \ # Workers number
-    --persistent \ # Don't re-initialize device on timeout (for example when HDMI cable was disconnected)
+    --persistent \ # Suppress repetitive signal source errors (for example when HDMI cable was disconnected)
     --dv-timings \ # Use DV-timings
     --drop-same-frames=30 # Save the traffic
 ```
@@ -94,7 +113,7 @@ dtoverlay=tc358743
 
 Check size of CMA:
 
-```bash
+```
 $ dmesg | grep cma-reserved
 [    0.000000] Memory: 7700524K/8244224K available (11772K kernel code, 1278K rwdata, 4320K rodata, 4096K init, 1077K bss, 281556K reserved, 262144K cma-reserved)
 ```
@@ -110,14 +129,14 @@ Save changes and reboot.
 ## Launch
 Start container:
 
-```bash
+```
 $ docker run --device /dev/video0:/dev/video0 -e EDID=1 -p 8080:8080 pikvm/ustreamer:latest
 ```
 
 Then access the web interface at port 8080 (e.g. http://raspberrypi.local:8080).
 
 ## Custom config
-```bash
+```
 $ docker run --rm pikvm/ustreamer:latest \
     --format=uyvy \
     --workers=3 \
@@ -127,13 +146,21 @@ $ docker run --rm pikvm/ustreamer:latest \
 ```
 
 ## EDID
-Add `-e EDID=1` to set HDMI EDID before starging ustreamer. Use together with `-e EDID_HEX=xx` to specify custom EDID data.
+Add `-e EDID=1` to set HDMI EDID before starting ustreamer. Use together with `-e EDID_HEX=xx` to specify custom EDID data.
 
 -----
 # Raspberry Pi Camera Example
 
+Example usage for the Raspberry Pi v3 camera (required `libcamerify` which is located in `libcamera-tools` and `libcamera-v4l2` (install both) on Raspbian):
+```
+$ sudo modprobe bcm2835-v4l2
+$ libcamerify ./ustreamer --host :: --encoder=m2m-image
+```
+
+For v2 camera you can use the same trick with `libcamerify` but enable legacy camera mode in `raspi-config`.
+
 Example usage for the Raspberry Pi v1 camera:
-```bash
+```
 $ sudo modprobe bcm2835-v4l2
 $ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
 ```
@@ -142,7 +169,7 @@ $ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
 
 :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
 ```
 
@@ -153,7 +180,7 @@ $ modprobe bcm2835-v4l2 max_video_width=2592 max_video_height=1944
 µStreamer supports bandwidth-efficient streaming using [H.264 compression](https://en.wikipedia.org/wiki/Advanced_Video_Coding) and the Janus WebRTC server. See the [Janus integration guide](docs/h264.md) for full details.
 
 ## Nginx
-When uStreamer is behind an Nginx proxy, it's buffering behavior introduces latency into the video stream. It's possible to disable Nginx's buffering to eliminate the additional latency:
+When uStreamer is behind an Nginx proxy, its buffering behavior introduces latency into the video stream. It's possible to disable Nginx's buffering to eliminate the additional latency:
 
 ```nginx
 location /stream {
@@ -182,7 +209,7 @@ v4l2 utilities provide the tools to manage USB webcam setting and information. S
 
 -----
 # License
-Copyright (C) 2018-2022 by Maxim Devaev mdevaev@gmail.com
+Copyright (C) 2018-2023 by Maxim Devaev mdevaev@gmail.com
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

README.ru.md

@@ -1,145 +0,0 @@
-# µStreamer
-[![CI](https://github.com/pikvm/ustreamer/workflows/CI/badge.svg)](https://github.com/pikvm/ustreamer/actions?query=workflow%3ACI)
-[![Discord](https://img.shields.io/discord/580094191938437144?logo=discord)](https://discord.gg/bpmXfz5)
-
-[[English version]](README.md)
-
-
-µStreamer - это маленький и очень быстрый сервер, который позволяет организовать трансляцию видео в формате [MJPEG](https://en.wikipedia.org/wiki/Motion_JPEG) с любого устройства V4L2 в сеть. Этот формат нативно поддерживается всеми современными браузерами и большинством приложений для просмотра видео (mplayer, VLC и так далее). µStreamer был разработан в рамках проекта [PiKVM](https://github.com/pikvm/pikvm) специально для стриминга с устройств видеозахвата [VGA](https://www.amazon.com/dp/B0126O0RDC) и [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) с максимально возможным разрешением и FPS, которые только позволяет железо.
-
-Функционально µStreamer очень похож на [mjpg-streamer](https://github.com/jacksonliam/mjpg-streamer) при использовании им плагинов ```input_uvc.so``` и ```output_http.so```, однако имеет ряд серьезных отличий. Основные приведены в этой таблице:
-
-| **Фича** | **µStreamer** | **mjpg-streamer** |
-|----------|---------------|-------------------|
-| Многопоточное кодирование JPEG | ✔ | ✘ |
-| Аппаратное кодирование на Raspberry Pi | ✔ | ✘ |
-| Поведение при физическом отключении<br>устройства от сервера во время работы | ✔ Транслирует черный экран<br>с надписью ```NO SIGNAL```,<br>пока устройство не будет подключено снова | ✘ Прерывает трансляцию <sup>1</sup> |
-| Поддержка [DV-таймингов](https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/dv-timings.html) - возможности<br>изменения  параметров разрешения<br>трансляции на лету по сигналу<br>источника (устройства видеозахвата) | ✔ | ☹ Условно есть <sup>1</sup> |
-| Возможность пропуска фреймов при передаче<br>статического изображения по HTTP<br>для экономии трафика | ✔ <sup>2</sup> | ✘ |
-| Стрим через UNIX domain socket | ✔ | ✘ |
-| Systemd socket activation | ✔ | ✘ |
-| Дебаг-логи без перекомпиляции,<br>логгирование статистики производительности,<br>возможность получения параметров<br>трансляции по HTTP | ✔ | ✘ |
-| Возможность сервить файлы встроенным<br>HTTP-сервером  | ✔ | ☹ Нет каталогов |
-| Вывод сигналов о состоянии стрима на GPIO<br>с помощью [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) | ✔ | ✘ |
-| Поддержка контролов веб-камер (фокус,<br> движение сервами) и всяких настроек,<br> типа яркости, через HTTP | ✘ | ✔ |
-| Совместимость с API mjpg-streamer'а | ✔ | :) |
-
-Сносочки:
-  * ```1``` Еще до написания µStreamer, я запилил [патч](https://github.com/jacksonliam/mjpg-streamer/pull/164), добавляющий в mjpg-streamer поддержку DV-таймингов и предотвращающий его зависание при отключении устройства. Однако патч, увы, далек от совершенства и я не гарантирую его стопроцентную работоспособность, поскольку код mjpg-streamer чрезвычайно запутан и очень плохо структурирован. Учитывая это, а также то, что в дальнейшем мне потребовались многопоточность и аппаратное кодирование JPEG, было принято решение написать свой стрим-сервер с нуля, чтобы не тратить силы на поддержку лишнего легаси.
-
-  * ```2``` Это фича позволяет в несколько раз снизить объем исходящего трафика при трансляции HDMI, однако немного увеличивает загрузку процессора. Суть в том, что HDMI - полностью цифровой интерфейс, и новый захваченный фрейм может быть идентичен предыдущему в точности до байта. В этом случае нет нужды передавать одну и ту же картинку по сети несколько раз в секунду. При использовании опции `--drop-same-frames=20`, µStreamer будет дропать все одинаковые фреймы, но не более 20 подряд. Новый фрейм сравнивается с предыдущим сначала по длине, а затем помощью ```memcmp()```.
-
------
-# TL;DR
-Если вам нужно вещать стрим с уличной камеры и управлять ее параметрами - возьмите mjpg-streamer. Если же вам нужно очень качественное изображение с высоким FPS - µStreamer ваш бро.
-
------
-# Сборка
-Для сборки вам понадобятся ```make```, ```gcc```, ```libevent``` с поддержкой ```pthreads```, ```libjpeg8```/```libjpeg-turbo``` и ```libbsd``` (только для Linux).
-
-* Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
-* Raspbian: `sudo apt install libevent-dev libjpeg8-dev libbsd-dev`.  Добавьте `libgpiod` для `WITH_GPIO=1` и `libsystemd-dev` для `WITH_SYSTEMD=1`.
-* Debian/Ubuntu: `sudo apt install build-essential libevent-dev libjpeg-dev libbsd-dev`.
-
-Для включения сборки с поддержкой GPIO установите [libgpiod](https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about) и добавьте параметр ```WITH_GPIO=1```. Если при сборке компилятор ругается на отсутствие функции ```pthread_get_name_np()``` или другой подобной, добавьте параметр ```WITH_PTHREAD_NP=0``` (по умолчанию он включен). При аналогичной ошибке с функцией ```setproctitle()``` добавьте параметр ```WITH_SETPROCTITLE=0```.
-
-```
-$ git clone --depth=1 https://github.com/pikvm/ustreamer
-$ cd ustreamer
-$ make
-$ ./ustreamer --help
-```
-
-Для Arch Linux в AUR есть готовый пакет: https://aur.archlinux.org/packages/ustreamer.
-
-Порт для FreeBSD: https://www.freshports.org/multimedia/ustreamer.
-
------
-# Использование
-**Для аппаратного кодирования M2M на Raspberry Pi, вам нужно ядро минимальной версии 5.15.32. Поддержка OpenMAX и MMAL для более старых ядер объявлена устаревшей и была удалена.**
-
-Будучи запущенным без аргументов, ```ustreamer``` попробует открыть устройство ```/dev/video0``` с разрешением 640x480 и начать трансляцию на ```http://127.0.0.1:8080```. Это поведение может быть изменено с помощью опций ```--device```, ```--host``` и ```--port```. Пример вещания на всю сеть по 80-м порту:
-```
-# ./ustreamer --device=/dev/video1 --host=0.0.0.0 --port=80
-```
-
-:exclamation: Обратите внимание, что начиная с версии µStreamer v2.0 кросс-доменные запросы были выключены по умолчанию [по соображениям безопасности](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS). Чтобы включить старое поведение, используйте опцию `--allow-origin=\*`.
-
-Рекомендуемый способ запуска µStreamer для работы с [Auvidea B101](https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=120702&start=400#p1339178) на Raspberry Pi:
-```bash
-$ ./ustreamer \
-    --format=uyvy \ # Настройка входного формата устройства
-    --encoder=m2m-image \ # Аппаратное кодирование с помощью драйвера V4L2 M2M
-    --workers=3 \ # Максимум воркеров
-    --persistent \ # Не переинициализировать устройство при таймауте (например, когда был отключен HDMI-кабель)
-    --dv-timings \ # Включение DV-таймингов
-    --drop-same-frames=30 # Экономим трафик
-```
-
-:exclamation: Обратите внимание, что для использования `--drop-same-frames` для разных браузеров нужно использовать ряд специальных параметров в `/stream` (за деталями обратитесь к урлу `/`).
-
-За полным списком опций обращайтесь ко встроенной справке: ```ustreamer --help```.
-
------
-# Камера Raspberry Pi
-Пример использования камеры Raspberry Pi v1:
-```bash
-$ sudo modprobe bcm2835-v4l2
-$ ./ustreamer --host :: -m jpeg --device-timeout=5 --buffers=3 -r 2592x1944
-```
-
-:exclamation: Обратите внимание что боле новые модели камеры имеют другое максимальное разрешение. Список поддерживаемых разрешений можно найти в [документации PiCamera](https://picamera.readthedocs.io/en/release-1.13/fov.html#sensor-modes).
-
-:exclamation: Если камера выдает низкий фреймрейт, возможно что она работает в фото-режиме, где производит более низкий фпс, но более качественную кратинку. Это происходит потому что `bcm2835-v4l2` переключает камеру в фото-режим на разрешениях выше `1280x720`. Чтобы обойти это, передайте параметры `max_video_width` и `max_video_height` при загрузке модуля, например:
-
-```bash
-$ modprobe bcm2835-v4l2 max_video_width=2592 max_video_height=1944
-```
-
------
-# Интеграция
-
-## Nginx
-Если uStreamer находится на Nginx, то последний будет буферизировать поток и создавать дополнительную задержку в стриме. Чтобы задержки не было, буферизацию можно отключить:
-
-```nginx
-location /stream {
-    postpone_output 0;
-    proxy_buffering off;
-    proxy_ignore_headers X-Accel-Buffering;
-    proxy_pass http://ustreamer;
-}
-```
-
------
-# Утилиты V4L2
-V4L2 предоставляет ряд официальных утилит для управления USB-вебкамерами и получения информации об устройствах. С их помощью можно писать всякие настроечные скрипты и запускать их по крону, если, например, вам требуется изменять настройки экспозиции в зависимости от времени суток. Пакет с этими утилитами доступен на всех дистрибутивах Linux и обычно называется `v4l-utils`.
-
-* Вывести список видеоустройств: `v4l2-ctl --list-devices`.
-* Вывести список доступных контролов устройства: `v4l2-ctl -d /dev/video0 --list-ctrls`.
-* Вывести список доступных форматов видео: `v4l2-ctl -d /dev/video0 --list-formats-ext`.
-* Показать текущее значение контрола: `v4l2-ctl -d /dev/video0 --get-ctrl=exposure_auto`.
-* Изменить значение контрола: `v4l2-ctl -d /dev/video0 --set-ctrl=exposure_auto=1`.
-
-Больше примеров вы можете найти [здесь](https://www.kurokesu.com/main/2016/01/16/manual-usb-camera-settings-in-linux/), а документацию в [`man v4l2-ctl`](https://www.mankier.com/1/v4l2-ctl).
-
------
-# Смотрите также
-* [Запуск с помощью systemd-сервиса](https://github.com/pikvm/ustreamer/issues/16).
-
------
-# Лицензия
-Copyright (C) 2018-2022 by Maxim Devaev mdevaev@gmail.com
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-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/.

docs/h264.md

@@ -189,7 +189,7 @@ The client-side JavaScript application uses the following control flow:
         success: function (pluginHandle) {
           uStreamerPluginHandle = pluginHandle;
           // Instruct the µStreamer Janus plugin to initiate streaming.
-          uStreamerPluginHandle.send({ message: { request: "watch" } });
+          uStreamerPluginHandle.send({ message: { request: "watch", params: {audio: true} } });
         },
 
         // Callback function if the server fails to attach the plugin.
@@ -197,13 +197,6 @@ The client-side JavaScript application uses the following control flow:
 
         // Callback function for processing messages from the Janus server.
         onmessage: function (msg, jsepOffer) {
-          // 503 indicates that the plugin is not ready to stream yet. Retry the
-          // watch request until the video stream is available.
-          if (msg.error_code === 503) {
-            uStreamerPluginHandle.send({ message: { request: "watch" } });
-            return;
-          }
-
           // If there is a JSEP offer, respond to it. This starts the WebRTC
           // connection.
           if (jsepOffer) {

docs/ssl/README.md

@@ -0,0 +1,50 @@
+# Adding SSL
+These days, browsers are not happy if you have HTTP content on an HTTPS page.
+The browser will not show an HTTP stream on a page if the parent page is from a site which is using HTTPS.
+
+The files in this folder configure an Nginx proxy in front of the µStreamer stream.
+Using certbot, an SSL cert is created from Let's Encrypt and installed.
+These scripts can be modified to add SSL to just about any HTTP server.
+
+The scripts are not fire and forget.
+They will require some pre-configuration and are interactive (you'll be asked questions while they're running).
+They have been tested using the following setup.
+1. A Raspberry Pi 4
+1. µStreamer set up and running as a service
+    1. Internally on port 8080
+    1. Public port will be 5101
+1. Verizon home Wi-Fi router
+1. Domain registration from GoDaddy
+
+## The Script
+Below is an overview of the steps performed by `ssl-config.sh` (for Raspberry OS):
+1. Install snapd - certbot uses this for installation
+1. Install certbot
+1. Get a free cert from Let's Encrypt using certbot
+1. Install nginx
+1. Configures nginx to proxy for µStreamer
+
+## Steps
+1. Create a public DNS entry.
+    1. Pointing to the Pi itself or the public IP of the router behind which the Pi sits.
+    1. This would be managed in the domain registrar, such as GoDaddy.
+    1. Use a subdomain, such as `webcam.domain.com`
+1. Port Forwarding
+    1. If using a Wi-Fi router, create a port forwarding rule which passes traffic from port 80 to the Pi. This is needed for certbot to ensure your DNS entry reaches the Pi, even if your final port will be something else.
+    1. Create a second rule for your final setup. For example, forward traffic from the router on port 5101 to the Pi's IP port 8080.
+1. Update the ustreamer-proxy file in this folder
+    1. Replace `your.domain.com` with a fully qualified domain, it's three places in the proxy file.
+    1. Modify the line `listen 5101 ssl` port if needed. This is the public port, not the port on which the µStreamer service is running
+    1. Modify `proxy_pass http://127.0.0.1:8080;` with the working address of the internal µStreamer service.
+1. Run the script
+    1. Stand buy, certbot asks some basic questions, such as email, domain, agree to terms, etc.
+    1. `bash ssl-config.sh`
+1. Test your URL!
+
+## Down the Road
+Two important points to keep in mind for the future:
+1. Dynamic IP - Most routers do not have a static IP address on the WAN side. So, if you reboot your router or if your internet provider gives you a new IP, you'll have to update the DNS entry.
+    1. Many routers have some sort of dynamic DNS feature. This would automatically update the DNS entry for you. That functionality is outside the scope of this document.
+1. SSL Renewals - certbot automatically creates a task to renew the SSL cert before it expires. Assuming the Pi is running all the time, this shouldn't be an issue.
+
+## Enjoy!

docs/ssl/ssl-config.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+echo -e "\e[32mInstalling snapd...\e[0m"
+sudo apt install snapd -y
+sudo snap install core
+
+
+echo -e "\e[32mInstalling certbot, don't leave, it's going to ask questions...\e[0m"
+sudo snap install --classic certbot
+sudo ln -s /snap/bin/certbot /usr/bin/certbot
+sudo certbot certonly --standalone
+sudo certbot renew --dry-run
+
+
+echo -e "\e[32mInstalling nginx...\e[0m"
+sudo apt-get install nginx -y
+sudo cp ustreamer-proxy /etc/nginx/sites-available/ustreamer-proxy
+sudo ln -s /etc/nginx/sites-available/ustreamer-proxy /etc/nginx/sites-enabled/
+sudo nginx -t
+sudo systemctl reload nginx

docs/ssl/ustreamer-proxy

@@ -0,0 +1,13 @@
+server {
+    listen 5101 ssl;
+    server_name your.domain.com;
+
+    ssl_certificate /etc/letsencrypt/live/your.domain.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/your.domain.com/privkey.pem;
+
+    location / {
+        proxy_pass http://127.0.0.1:8080;  # Change this to the uStreamer server address
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+    }
+}

docs/youtube.md

@@ -0,0 +1,97 @@
+## Streaming to third party services
+
+This method provides the ability of streaming a USB Webcam and include audio to large audiences.
+It uses to two machines. One is a Raspberry Pi and the other a more capable machine to performance
+the encoding of the video and audio that is streamed to the third party service such as YouTube.
+
+Another benefit of using a browser (http stream) is the video can have overlays add in the custom ustreamer webpage.
+For example a cron process that retrieves weather information and updates a file to include on the page, announcements,
+or other creative ideas. The audio stream can also be something other than the webcam mic (music, voice files, etc.)
+and easily changed on the second machine setup. In the following example filtering is applied in ffmpeg to
+improve the sound of the webcam mic making vocals clearer and more intelligible.
+
+* Machine 1:
+    * USB webcam on the machine (Pi for example) running ustreamer (video) and VLC (audio). Remember to make any needed firewall changes if machine 2 is on a separate network so it can reach the ports for the video and audio.
+    * To stream audio from the Pi.
+        ```
+        /usr/bin/vlc -I dummy -vvv alsa://hw:2,0 --sout #transcode{acodec=mp3,ab=128}:standard{access=http,mux=ts,dst=:[PickAPort}
+        ```
+
+* Machine 2:
+    * On a more capable box run the video stream in a browser using ffmpeg to combine the video (browser) and audio and stream to YouTube or other services. In this example a VM with two virtual monitors running the browser full screen one of the monitors is used.
+
+Script to stream the combination to YouTube:
+```bash
+#!/bin/bash
+KEY=$1
+echo
+echo Cleanup -------------------------------------------------
+source live-yt.key
+killall -9 ffmpeg
+killall -9 chromium
+sleep 3
+
+echo Setup General--------------------------------------------
+cd /home/[USER]
+rm -f nohup.out
+export DISPLAY=:0.0
+export $(dbus-launch)
+
+echo Setup Chromium-------------------------------------------
+CHROMIUM_TEMP=/home/{USER]/tmp/chromium
+rm -rf $CHROMIUM_TEMP.bak
+mv $CHROMIUM_TEMP $CHROMIUM_TEMP.bak
+mkdir -p $CHROMIUM_TEMP
+
+echo Start Chromium ------------------------------------------
+nohup /usr/lib/chromium/chromium \
+    --new-window "http://[ustreamerURL]" \
+    --start-fullscreen \
+    --disable \
+    --disable-translate \
+    --disable-infobars \
+    --disable-suggestions-service \
+    --disable-save-password-bubble \
+    --disable-new-tab-first-run \
+    --disable-session-crashed-bubble \
+    --disable-bundled-ppapi-flash  \
+    --disable-gpu \
+    --enable-javascript \
+    --enable-user-scripts \
+    --disk-cache-dir=$CHROMIUM_TEMP/cache/ustreamer/ \
+    --user-data-dir=$CHROMIUM_TEMP/user_data/ustreamer/ \
+    --window-position=1440,12 \
+     >/dev/null 2>&1 &
+sleep 5
+
+echo Start FFMpeg---------------------------------------------
+nohup /usr/bin/ffmpeg \
+    -loglevel level+warning \
+    -thread_queue_size 512 \
+    -framerate 30 \
+    -f x11grab \
+    -s 1920x1080 \
+    -probesize 42M \
+    -i :0.0+1024,0 \
+    -i http://[VLCaudioURL] \
+    -filter:a "volume=10, highpass=f=300, lowpass=f=2800" \
+    -c:v libx264 \
+    -pix_fmt yuv420p \
+    -g 60 \
+    -b:v 2500k \
+    -c:a libmp3lame \
+    -ar 44100 \
+    -b:a 32k \
+    -preset ultrafast \
+    -maxrate 5000k \
+    -bufsize 2500k \
+    -preset ultrafast \
+    -flvflags no_duration_filesize  \
+    -f flv "rtmp://a.rtmp.youtube.com/live2/$KEY" \
+     >/home/{USER]/ff-audio.log 2>&1 &
+
+echo Done ----------------------------------------------------
+echo
+```
+
+*PS: Recipe by David Klippel*

janus/Makefile

@@ -31,13 +31,13 @@ endif
 # =====
 $(_PLUGIN): $(_SRCS:%.c=$(_BUILD)/%.o)
 	$(info == SO $@)
-	@ $(CC) $^ -o $@ $(_LDFLAGS)
+	$(ECHO) $(CC) $^ -o $@ $(_LDFLAGS)
 
 
 $(_BUILD)/%.o: %.c
 	$(info -- CC $<)
-	@ mkdir -p $(dir $@) || true
-	@ $(CC) $< -o $@ $(_CFLAGS)
+	$(ECHO) mkdir -p $(dir $@) || true
+	$(ECHO) $(CC) $< -o $@ $(_CFLAGS)
 
 
 

janus/src/audio.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,23 @@
 
 #include "audio.h"
 
+#include <stdlib.h>
+#include <stdatomic.h>
+#include <assert.h>
+
+#include <pthread.h>
+#include <alsa/asoundlib.h>
+#include <speex/speex_resampler.h>
+#include <opus/opus.h>
+
+#include "uslibs/types.h"
+#include "uslibs/tools.h"
+#include "uslibs/array.h"
+#include "uslibs/ring.h"
+#include "uslibs/threading.h"
+
+#include "logging.h"
+
 
 #define _JLOG_PERROR_ALSA(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, snd_strerror(_err))
 #define _JLOG_PERROR_RES(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, speex_resampler_strerror(_err))
@@ -31,7 +48,7 @@
 //   - https://github.com/xiph/opus/blob/7b05f44/src/opus_demo.c#L368
 #define _HZ_TO_FRAMES(_hz)	(6 * (_hz) / 50) // 120ms
 #define _HZ_TO_BUF16(_hz)	(_HZ_TO_FRAMES(_hz) * 2) // One stereo frame = (16bit L) + (16bit R)
-#define _HZ_TO_BUF8(_hz)	(_HZ_TO_BUF16(_hz) * sizeof(int16_t))
+#define _HZ_TO_BUF8(_hz)	(_HZ_TO_BUF16(_hz) * sizeof(s16))
 
 #define _MIN_PCM_HZ			8000
 #define _MAX_PCM_HZ			192000
@@ -41,26 +58,42 @@
 
 
 typedef struct {
-	int16_t		data[_MAX_BUF16];
+	s16		data[_MAX_BUF16];
 } _pcm_buffer_s;
 
 typedef struct {
-	uint8_t		data[_MAX_BUF8]; // Worst case
-	size_t		used;
-	uint64_t	pts;
+	u8		data[_MAX_BUF8]; // Worst case
+	uz		used;
+	u64	pts;
 } _enc_buffer_s;
 
 
+static _pcm_buffer_s *_pcm_buffer_init(void);
+static _enc_buffer_s *_enc_buffer_init(void);
+
 static void *_pcm_thread(void *v_audio);
 static void *_encoder_thread(void *v_audio);
 
 
-us_audio_s *us_audio_init(const char *name, unsigned pcm_hz) {
+bool us_audio_probe(const char *name) {
+	snd_pcm_t *pcm;
+	int err;
+	US_JLOG_INFO("audio", "Probing PCM capture ...");
+	if ((err = snd_pcm_open(&pcm, name, SND_PCM_STREAM_CAPTURE, 0)) < 0) {
+		_JLOG_PERROR_ALSA(err, "audio", "Can't probe PCM capture");
+		return false;
+	}
+	snd_pcm_close(pcm);
+	US_JLOG_INFO("audio", "PCM capture is available");
+	return true;
+}
+
+us_audio_s *us_audio_init(const char *name, uint pcm_hz) {
 	us_audio_s *audio;
 	US_CALLOC(audio, 1);
 	audio->pcm_hz = pcm_hz;
-	audio->pcm_queue = us_queue_init(8);
-	audio->enc_queue = us_queue_init(8);
+	US_RING_INIT_WITH_ITEMS(audio->pcm_ring, 8, _pcm_buffer_init);
+	US_RING_INIT_WITH_ITEMS(audio->enc_ring, 8, _enc_buffer_init);
 	atomic_init(&audio->stop, false);
 
 	int err;
@@ -138,38 +171,51 @@ void us_audio_destroy(us_audio_s *audio) {
 	US_DELETE(audio->res, speex_resampler_destroy);
 	US_DELETE(audio->pcm, snd_pcm_close);
 	US_DELETE(audio->pcm_params, snd_pcm_hw_params_free);
-	US_QUEUE_DELETE_WITH_ITEMS(audio->enc_queue, free);
-	US_QUEUE_DELETE_WITH_ITEMS(audio->pcm_queue, free);
+	US_RING_DELETE_WITH_ITEMS(audio->enc_ring, free);
+	US_RING_DELETE_WITH_ITEMS(audio->pcm_ring, free);
 	if (audio->tids_created) {
 		US_JLOG_INFO("audio", "Pipeline closed");
 	}
 	free(audio);
 }
 
-int us_audio_get_encoded(us_audio_s *audio, uint8_t *data, size_t *size, uint64_t *pts) {
+int us_audio_get_encoded(us_audio_s *audio, u8 *data, uz *size, u64 *pts) {
 	if (atomic_load(&audio->stop)) {
 		return -1;
 	}
-	_enc_buffer_s *buf;
-	if (!us_queue_get(audio->enc_queue, (void **)&buf, 0.1)) {
-		if (*size < buf->used) {
-			free(buf);
-			return -3;
-		}
-		memcpy(data, buf->data, buf->used);
-		*size = buf->used;
-		*pts = buf->pts;
-		free(buf);
-		return 0;
+	const int ri = us_ring_consumer_acquire(audio->enc_ring, 0.1);
+	if (ri < 0) {
+		return -2;
 	}
-	return -2;
+	const _enc_buffer_s *const buf = audio->enc_ring->items[ri];
+	if (*size < buf->used) {
+		us_ring_consumer_release(audio->enc_ring, ri);
+		return -3;
+	}
+	memcpy(data, buf->data, buf->used);
+	*size = buf->used;
+	*pts = buf->pts;
+	us_ring_consumer_release(audio->enc_ring, ri);
+	return 0;
+}
+
+static _pcm_buffer_s *_pcm_buffer_init(void) {
+	_pcm_buffer_s *buf;
+	US_CALLOC(buf, 1);
+	return buf;
+}
+
+static _enc_buffer_s *_enc_buffer_init(void) {
+	_enc_buffer_s *buf;
+	US_CALLOC(buf, 1);
+	return buf;
 }
 
 static void *_pcm_thread(void *v_audio) {
-	US_THREAD_RENAME("us_a_pcm");
+	US_THREAD_SETTLE("us_a_pcm");
 
 	us_audio_s *const audio = (us_audio_s *)v_audio;
-	uint8_t in[_MAX_BUF8];
+	u8 in[_MAX_BUF8];
 
 	while (!atomic_load(&audio->stop)) {
 		const int frames = snd_pcm_readi(audio->pcm, in, audio->pcm_frames);
@@ -181,13 +227,13 @@ static void *_pcm_thread(void *v_audio) {
 			break;
 		}
 
-		if (us_queue_get_free(audio->pcm_queue)) {
-			_pcm_buffer_s *out;
-			US_CALLOC(out, 1);
+		const int ri = us_ring_producer_acquire(audio->pcm_ring, 0);
+		if (ri >= 0) {
+			_pcm_buffer_s *const out = audio->pcm_ring->items[ri];
 			memcpy(out->data, in, audio->pcm_size);
-			assert(!us_queue_put(audio->pcm_queue, out, 0));
+			us_ring_producer_release(audio->pcm_ring, ri);
 		} else {
-			US_JLOG_ERROR("audio", "PCM queue is full");
+			US_JLOG_ERROR("audio", "PCM ring is full");
 		}
 	}
 
@@ -196,45 +242,50 @@ static void *_pcm_thread(void *v_audio) {
 }
 
 static void *_encoder_thread(void *v_audio) {
-	US_THREAD_RENAME("us_a_enc");
+	US_THREAD_SETTLE("us_a_enc");
 
 	us_audio_s *const audio = (us_audio_s *)v_audio;
-	int16_t in_res[_MAX_BUF16];
+	s16 in_res[_MAX_BUF16];
 
 	while (!atomic_load(&audio->stop)) {
-		_pcm_buffer_s *in;
-		if (!us_queue_get(audio->pcm_queue, (void **)&in, 0.1)) {
-			int16_t *in_ptr;
-			if (audio->res != NULL) {
-				assert(audio->pcm_hz != _ENCODER_INPUT_HZ);
-				uint32_t in_count = audio->pcm_frames;
-				uint32_t out_count = _HZ_TO_FRAMES(_ENCODER_INPUT_HZ);
-				speex_resampler_process_interleaved_int(audio->res, in->data, &in_count, in_res, &out_count);
-				in_ptr = in_res;
-			} else {
-				assert(audio->pcm_hz == _ENCODER_INPUT_HZ);
-				in_ptr = in->data;
-			}
+		const int in_ri = us_ring_consumer_acquire(audio->pcm_ring, 0.1);
+		if (in_ri < 0) {
+			continue;
+		}
+		_pcm_buffer_s *const in = audio->pcm_ring->items[in_ri];
 
-			_enc_buffer_s *out;
-			US_CALLOC(out, 1);
-			const int size = opus_encode(audio->enc, in_ptr, _HZ_TO_FRAMES(_ENCODER_INPUT_HZ), out->data, US_ARRAY_LEN(out->data));
-			free(in);
-			if (size < 0) {
-				_JLOG_PERROR_OPUS(size, "audio", "Fatal: Can't encode PCM frame to OPUS");
-				free(out);
-				break;
-			}
+		s16 *in_ptr;
+		if (audio->res != NULL) {
+			assert(audio->pcm_hz != _ENCODER_INPUT_HZ);
+			u32 in_count = audio->pcm_frames;
+			u32 out_count = _HZ_TO_FRAMES(_ENCODER_INPUT_HZ);
+			speex_resampler_process_interleaved_int(audio->res, in->data, &in_count, in_res, &out_count);
+			in_ptr = in_res;
+		} else {
+			assert(audio->pcm_hz == _ENCODER_INPUT_HZ);
+			in_ptr = in->data;
+		}
+
+		const int out_ri = us_ring_producer_acquire(audio->enc_ring, 0);
+		if (out_ri < 0) {
+			US_JLOG_ERROR("audio", "OPUS encoder queue is full");
+			us_ring_consumer_release(audio->pcm_ring, in_ri);
+			continue;
+		}
+		_enc_buffer_s *const out = audio->enc_ring->items[out_ri];
+
+		const int size = opus_encode(audio->enc, in_ptr, _HZ_TO_FRAMES(_ENCODER_INPUT_HZ), out->data, US_ARRAY_LEN(out->data));
+		us_ring_consumer_release(audio->pcm_ring, in_ri);
+
+		if (size >= 0) {
 			out->used = size;
 			out->pts = audio->pts;
 			// https://datatracker.ietf.org/doc/html/rfc7587#section-4.2
 			audio->pts += _HZ_TO_FRAMES(_ENCODER_INPUT_HZ);
-
-			if (us_queue_put(audio->enc_queue, out, 0) != 0) {
-				US_JLOG_ERROR("audio", "OPUS encoder queue is full");
-				free(out);
-			}
+		} else {
+			_JLOG_PERROR_OPUS(size, "audio", "Fatal: Can't encode PCM frame to OPUS");
 		}
+		us_ring_producer_release(audio->enc_ring, out_ri);
 	}
 
 	atomic_store(&audio->stop, true);

janus/src/audio.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,48 +22,40 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
 #include <stdatomic.h>
-#include <assert.h>
-
-#include <sys/types.h>
 
 #include <pthread.h>
 #include <alsa/asoundlib.h>
 #include <speex/speex_resampler.h>
 #include <opus/opus.h>
 
-#include "uslibs/tools.h"
-#include "uslibs/array.h"
-#include "uslibs/threading.h"
-
-#include "logging.h"
-#include "queue.h"
+#include "uslibs/types.h"
+#include "uslibs/ring.h"
 
 
 typedef struct {
 	snd_pcm_t			*pcm;
-	unsigned			pcm_hz;
-	unsigned			pcm_frames;
-	size_t				pcm_size;
+	uint				pcm_hz;
+	uint				pcm_frames;
+	uz					pcm_size;
 	snd_pcm_hw_params_t	*pcm_params;
 	SpeexResamplerState	*res;
 	OpusEncoder			*enc;
 
-	us_queue_s				*pcm_queue;
-	us_queue_s				*enc_queue;
-	uint32_t			pts;
+	us_ring_s		*pcm_ring;
+	us_ring_s		*enc_ring;
+	u32				pts;
 
-	pthread_t			pcm_tid;
-	pthread_t			enc_tid;
-	bool				tids_created;
-	atomic_bool			stop;
+	pthread_t		pcm_tid;
+	pthread_t		enc_tid;
+	bool			tids_created;
+	atomic_bool		stop;
 } us_audio_s;
 
 
-us_audio_s *us_audio_init(const char *name, unsigned pcm_hz);
+bool us_audio_probe(const char *name);
+
+us_audio_s *us_audio_init(const char *name, uint pcm_hz);
 void us_audio_destroy(us_audio_s *audio);
 
-int us_audio_get_encoded(us_audio_s *audio, uint8_t *data, size_t *size, uint64_t *pts);
+int us_audio_get_encoded(us_audio_s *audio, u8 *data, uz *size, u64 *pts);

janus/src/client.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,102 +22,136 @@
 
 #include "client.h"
 
+#include <stdlib.h>
+#include <stdatomic.h>
+#include <string.h>
+
+#include <pthread.h>
+#include <janus/plugins/plugin.h>
+
+#include "uslibs/types.h"
+#include "uslibs/tools.h"
+#include "uslibs/threading.h"
+#include "uslibs/list.h"
+#include "uslibs/ring.h"
+
+#include "logging.h"
+#include "rtp.h"
+
 
 static void *_video_thread(void *v_client);
 static void *_audio_thread(void *v_client);
 static void *_common_thread(void *v_client, bool video);
 
 
-us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_session *session, bool has_audio) {
+us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_session *session) {
 	us_janus_client_s *client;
 	US_CALLOC(client, 1);
 	client->gw = gw;
 	client->session = session;
-	atomic_init(&client->transmit, true);
+	atomic_init(&client->transmit, false);
+	atomic_init(&client->transmit_audio, false);
+	atomic_init(&client->video_orient, 0);
 
 	atomic_init(&client->stop, false);
 
-	client->video_queue = us_queue_init(1024);
+	US_RING_INIT_WITH_ITEMS(client->video_ring, 2048, us_rtp_init);
 	US_THREAD_CREATE(client->video_tid, _video_thread, client);
 
-	if (has_audio) {
-		client->audio_queue = us_queue_init(64);
-		US_THREAD_CREATE(client->audio_tid, _audio_thread, client);
-	}
+	US_RING_INIT_WITH_ITEMS(client->audio_ring, 64, us_rtp_init);
+	US_THREAD_CREATE(client->audio_tid, _audio_thread, client);
+
 	return client;
 }
 
 void us_janus_client_destroy(us_janus_client_s *client) {
 	atomic_store(&client->stop, true);
-	us_queue_put(client->video_queue, NULL, 0);
-	if (client->audio_queue != NULL) {
-		us_queue_put(client->audio_queue, NULL, 0);
-	}
 
 	US_THREAD_JOIN(client->video_tid);
-	US_QUEUE_DELETE_WITH_ITEMS(client->video_queue, us_rtp_destroy);
-	if (client->audio_queue != NULL) {
-		US_THREAD_JOIN(client->audio_tid);
-		US_QUEUE_DELETE_WITH_ITEMS(client->audio_queue, us_rtp_destroy);
-	}
+	US_RING_DELETE_WITH_ITEMS(client->video_ring, us_rtp_destroy);
+
+	US_THREAD_JOIN(client->audio_tid);
+	US_RING_DELETE_WITH_ITEMS(client->audio_ring, us_rtp_destroy);
+
 	free(client);
 }
 
 void us_janus_client_send(us_janus_client_s *client, const us_rtp_s *rtp) {
 	if (
-		!atomic_load(&client->transmit)
-		|| (!rtp->video && client->audio_queue == NULL)
+		atomic_load(&client->transmit)
+		&& (rtp->video || atomic_load(&client->transmit_audio))
 	) {
-		return;
-	}
-	us_rtp_s *const new = us_rtp_dup(rtp);
-	if (us_queue_put((new->video ? client->video_queue : client->audio_queue), new, 0) != 0) {
-		US_JLOG_ERROR("client", "Session %p %s queue is full",
-			client->session, (new->video ? "video" : "audio"));
-		us_rtp_destroy(new);
+		us_ring_s *const ring = (rtp->video ? client->video_ring : client->audio_ring);
+		const int ri = us_ring_producer_acquire(ring, 0);
+		if (ri < 0) {
+			US_JLOG_ERROR("client", "Session %p %s ring is full",
+				client->session, (rtp->video ? "video" : "audio"));
+			return;
+		}
+		memcpy(ring->items[ri], rtp, sizeof(us_rtp_s));
+		us_ring_producer_release(ring, ri);
 	}
 }
 
 static void *_video_thread(void *v_client) {
+	US_THREAD_SETTLE("us_c_video");
 	return _common_thread(v_client, true);
 }
 
 static void *_audio_thread(void *v_client) {
+	US_THREAD_SETTLE("us_c_audio");
 	return _common_thread(v_client, false);
 }
 
 static void *_common_thread(void *v_client, bool video) {
 	us_janus_client_s *const client = (us_janus_client_s *)v_client;
-	us_queue_s *const queue = (video ? client->video_queue : client->audio_queue);
-	assert(queue != NULL); // Audio may be NULL
+	us_ring_s *const ring = (video ? client->video_ring : client->audio_ring);
+	assert(ring != NULL); // Audio may be NULL
 
 	while (!atomic_load(&client->stop)) {
-		us_rtp_s *rtp;
-		if (!us_queue_get(queue, (void **)&rtp, 0.1)) {
-			if (rtp == NULL) {
-				break;
-			}
-			if (atomic_load(&client->transmit)) {
-				janus_plugin_rtp packet = {0};
-				packet.video = rtp->video;
-				packet.buffer = (char *)rtp->datagram;
-				packet.length = rtp->used;
+		const int ri = us_ring_consumer_acquire(ring, 0.1);
+		if (ri < 0) {
+			continue;
+		}
+		us_rtp_s rtp;
+		memcpy(&rtp, ring->items[ri], sizeof(us_rtp_s));
+		us_ring_consumer_release(ring, ri);
+
+		if (
+			atomic_load(&client->transmit)
+			&& (video || atomic_load(&client->transmit_audio))
+		) {
+			janus_plugin_rtp packet = {
+				.video = rtp.video,
+				.buffer = (char*)rtp.datagram,
+				.length = rtp.used,
 #				if JANUS_PLUGIN_API_VERSION >= 100
 				// The uStreamer Janus plugin places video in stream index 0 and audio
 				// (if available) in stream index 1.
-				packet.mindex = (rtp->video ? 0 : 1);
+				.mindex = (rtp.video ? 0 : 1),
 #				endif
-				janus_plugin_rtp_extensions_reset(&packet.extensions);
-				// FIXME: Это очень эффективный способ уменьшить задержку, но WebRTC стек в хроме и фоксе
-				// слишком корявый, чтобы обработать это, из-за чего на кейфреймах начинаются заикания.
-				//   - https://github.com/Glimesh/janus-ftl-plugin/issues/101
-				if (rtp->zero_playout_delay) {
-					packet.extensions.min_delay = 0;
-					packet.extensions.max_delay = 0;
+			};
+			janus_plugin_rtp_extensions_reset(&packet.extensions);
+
+			/*if (rtp->zero_playout_delay) {
+				// https://github.com/pikvm/pikvm/issues/784
+				packet.extensions.min_delay = 0;
+				packet.extensions.max_delay = 0;
+			} else {
+				packet.extensions.min_delay = 0;
+				// 10s - Chromium/WebRTC default
+				// 3s - Firefox default
+				packet.extensions.max_delay = 300; // == 3s, i.e. 10ms granularity
+			}*/
+
+			if (rtp.video) {
+				const uint video_orient = atomic_load(&client->video_orient);
+				if (video_orient != 0) {
+					packet.extensions.video_rotation = video_orient;
 				}
-				client->gw->relay_rtp(client->session, &packet);
 			}
-			us_rtp_destroy(rtp);
+
+			client->gw->relay_rtp(client->session, &packet);
 		}
 	}
 	return NULL;

janus/src/client.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,40 +22,37 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stdbool.h>
 #include <stdatomic.h>
-#include <string.h>
 
 #include <pthread.h>
 #include <janus/plugins/plugin.h>
 
-#include "uslibs/tools.h"
-#include "uslibs/threading.h"
+#include "uslibs/types.h"
 #include "uslibs/list.h"
+#include "uslibs/ring.h"
 
-#include "logging.h"
-#include "queue.h"
 #include "rtp.h"
 
 
 typedef struct us_janus_client_sx {
 	janus_callbacks			*gw;
-    janus_plugin_session	*session;
-    atomic_bool				transmit;
+	janus_plugin_session	*session;
+	atomic_bool				transmit;
+	atomic_bool				transmit_audio;
+	atomic_uint				video_orient;
 
-	pthread_t	video_tid;
-	pthread_t	audio_tid;
-	atomic_bool	stop;
+	pthread_t				video_tid;
+	pthread_t				audio_tid;
+	atomic_bool				stop;
 
-	us_queue_s		*video_queue;
-	us_queue_s		*audio_queue;
+	us_ring_s				*video_ring;
+	us_ring_s				*audio_ring;
 
     US_LIST_STRUCT(struct us_janus_client_sx);
 } us_janus_client_s;
 
 
-us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_session *session, bool has_audio);
+us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_session *session);
 void us_janus_client_destroy(us_janus_client_s *client);
 
 void us_janus_client_send(us_janus_client_s *client, const us_rtp_s *rtp);

janus/src/config.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,9 +22,20 @@
 
 #include "config.h"
 
+#include <stdlib.h>
+#include <string.h>
+
+#include <janus/config.h>
+#include <janus/plugins/plugin.h>
+
+#include "uslibs/tools.h"
+
+#include "const.h"
+#include "logging.h"
+
 
 static char *_get_value(janus_config *jcfg, const char *section, const char *option);
-static bool _get_bool(janus_config *jcfg, const char *section, const char *option, bool def);
+// static bool _get_bool(janus_config *jcfg, const char *section, const char *option, bool def);
 
 
 us_config_s *us_config_init(const char *config_dir_path) {
@@ -51,11 +62,7 @@ us_config_s *us_config_init(const char *config_dir_path) {
 		US_JLOG_ERROR("config", "Missing config value: video.sink (ex. memsink.object)");
 		goto error;
 	}
-	if ((config->video_zero_playout_delay = _get_bool(jcfg, "video", "zero_playout_delay", false)) == true) {
-		US_JLOG_INFO("config", "Enabled the experimental Playout-Delay=0 RTP extension for VIDEO");
-	}
 	if ((config->audio_dev_name = _get_value(jcfg, "audio", "device")) != NULL) {
-		US_JLOG_INFO("config", "Enabled the experimental AUDIO feature");
 		if ((config->tc358743_dev_path = _get_value(jcfg, "audio", "tc358743")) == NULL) {
 			US_JLOG_INFO("config", "Missing config value: audio.tc358743");
 			goto error;
@@ -63,13 +70,14 @@ us_config_s *us_config_init(const char *config_dir_path) {
 	}
 
 	goto ok;
-	error:
-		us_config_destroy(config);
-		config = NULL;
-	ok:
-		US_DELETE(jcfg, janus_config_destroy);
-		free(config_file_path);
-		return config;
+
+error:
+	US_DELETE(config, us_config_destroy);
+
+ok:
+	US_DELETE(jcfg, janus_config_destroy);
+	free(config_file_path);
+	return config;
 }
 
 void us_config_destroy(us_config_s *config) {
@@ -88,7 +96,7 @@ static char *_get_value(janus_config *jcfg, const char *section, const char *opt
 	return us_strdup(option_obj->value);
 }
 
-static bool _get_bool(janus_config *jcfg, const char *section, const char *option, bool def) {
+/*static bool _get_bool(janus_config *jcfg, const char *section, const char *option, bool def) {
 	char *const tmp = _get_value(jcfg, section, option);
 	bool value = def;
 	if (tmp != NULL) {
@@ -96,4 +104,4 @@ static bool _get_bool(janus_config *jcfg, const char *section, const char *optio
 		free(tmp);
 	}
 	return value;
-}
+}*/

janus/src/config.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,21 +22,9 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <string.h>
-
-#include <janus/config.h>
-#include <janus/plugins/plugin.h>
-
-#include "uslibs/tools.h"
-
-#include "const.h"
-#include "logging.h"
-
 
 typedef struct {
 	char	*video_sink_name;
-	bool	video_zero_playout_delay;
 
 	char	*audio_dev_name;
 	char	*tc358743_dev_path;

janus/src/const.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

janus/src/logging.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

janus/src/memsinkfd.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,13 +22,24 @@
 
 #include "memsinkfd.h"
 
+#include <unistd.h>
 
-int us_memsink_fd_wait_frame(int fd, us_memsink_shared_s* mem, uint64_t last_id) {
-	const long double deadline_ts = us_get_now_monotonic() + 1; // wait_timeout
-	long double now;
+#include <linux/videodev2.h>
+
+#include "uslibs/types.h"
+#include "uslibs/tools.h"
+#include "uslibs/frame.h"
+#include "uslibs/memsinksh.h"
+
+#include "logging.h"
+
+
+int us_memsink_fd_wait_frame(int fd, us_memsink_shared_s *mem, u64 last_id) {
+	const ldf deadline_ts = us_get_now_monotonic() + 1; // wait_timeout
+	ldf now_ts;
 	do {
 		const int result = us_flock_timedwait_monotonic(fd, 1); // lock_timeout
-		now = us_get_now_monotonic();
+		now_ts = us_get_now_monotonic();
 		if (result < 0 && errno != EWOULDBLOCK) {
 			US_JLOG_PERROR("video", "Can't lock memsink");
 			return -1;
@@ -42,12 +53,11 @@ int us_memsink_fd_wait_frame(int fd, us_memsink_shared_s* mem, uint64_t last_id)
 			}
 		}
 		usleep(1000); // lock_polling
-	} while (now < deadline_ts);
+	} while (now_ts < deadline_ts);
 	return -2;
 }
 
-us_frame_s *us_memsink_fd_get_frame(int fd, us_memsink_shared_s *mem, uint64_t *frame_id, bool key_required) {
-	us_frame_s *frame = us_frame_init();
+int us_memsink_fd_get_frame(int fd, us_memsink_shared_s *mem, us_frame_s *frame, u64 *frame_id, bool key_required) {
 	us_frame_set_data(frame, mem->data, mem->used);
 	US_FRAME_COPY_META(mem, frame);
 	*frame_id = mem->id;
@@ -56,18 +66,14 @@ us_frame_s *us_memsink_fd_get_frame(int fd, us_memsink_shared_s *mem, uint64_t *
 		mem->key_requested = true;
 	}
 
-	bool ok = true;
+	bool retval = 0;
 	if (frame->format != V4L2_PIX_FMT_H264) {
 		US_JLOG_ERROR("video", "Got non-H264 frame from memsink");
-		ok = false;
+		retval = -1;
 	}
 	if (flock(fd, LOCK_UN) < 0) {
 		US_JLOG_PERROR("video", "Can't unlock memsink");
-		ok = false;
+		retval = -1;
 	}
-	if (!ok) {
-		us_frame_destroy(frame);
-		frame = NULL;
-	}
-	return frame;
+	return retval;
 }

janus/src/memsinkfd.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,18 +22,10 @@
 
 #pragma once
 
-#include <stdbool.h>
-#include <stdint.h>
-#include <unistd.h>
-
-#include <linux/videodev2.h>
-
-#include "uslibs/tools.h"
+#include "uslibs/types.h"
 #include "uslibs/frame.h"
 #include "uslibs/memsinksh.h"
 
-#include "logging.h"
 
-
-int us_memsink_fd_wait_frame(int fd, us_memsink_shared_s* mem, uint64_t last_id);
-us_frame_s *us_memsink_fd_get_frame(int fd, us_memsink_shared_s *mem, uint64_t *frame_id, bool key_required);
+int us_memsink_fd_wait_frame(int fd, us_memsink_shared_s *mem, u64 last_id);
+int us_memsink_fd_get_frame(int fd, us_memsink_shared_s *mem, us_frame_s *frame, u64 *frame_id, bool key_required);

janus/src/plugin.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -20,8 +20,6 @@
 *****************************************************************************/
 
 
-#include <stdint.h>
-#include <stdbool.h>
 #include <stdatomic.h>
 #include <stdlib.h>
 #include <inttypes.h>
@@ -37,18 +35,19 @@
 #include <janus/plugins/plugin.h>
 #include <janus/rtcp.h>
 
+#include "uslibs/types.h"
 #include "uslibs/const.h"
 #include "uslibs/tools.h"
 #include "uslibs/threading.h"
 #include "uslibs/list.h"
+#include "uslibs/ring.h"
 #include "uslibs/memsinksh.h"
+#include "uslibs/tc358743.h"
 
 #include "const.h"
 #include "logging.h"
-#include "queue.h"
 #include "client.h"
 #include "audio.h"
-#include "tc358743.h"
 #include "rtp.h"
 #include "rtpv.h"
 #include "rtpa.h"
@@ -56,12 +55,12 @@
 #include "config.h"
 
 
-static us_config_s	*_g_config = NULL;
-const useconds_t	_g_watchers_polling = 100000;
+static us_config_s		*_g_config = NULL;
+static const useconds_t	_g_watchers_polling = 100000;
 
 static us_janus_client_s	*_g_clients = NULL;
 static janus_callbacks		*_g_gw = NULL;
-static us_queue_s			*_g_video_queue = NULL;
+static us_ring_s			*_g_video_ring = NULL;
 static us_rtpv_s			*_g_rtpv = NULL;
 static us_rtpa_s			*_g_rtpa = NULL;
 
@@ -77,6 +76,7 @@ static pthread_mutex_t	_g_audio_lock = PTHREAD_MUTEX_INITIALIZER;
 static atomic_bool		_g_ready = false;
 static atomic_bool		_g_stop = false;
 static atomic_bool		_g_has_watchers = false;
+static atomic_bool		_g_has_listeners = false;
 static atomic_bool		_g_key_required = false;
 
 
@@ -92,42 +92,43 @@ static atomic_bool		_g_key_required = false;
 #define _READY			atomic_load(&_g_ready)
 #define _STOP			atomic_load(&_g_stop)
 #define _HAS_WATCHERS	atomic_load(&_g_has_watchers)
+#define _HAS_LISTENERS	atomic_load(&_g_has_listeners)
 
 
 janus_plugin *create(void);
 
 
-#define _IF_NOT_REPORTED(...) { \
-		const unsigned _error_code = __LINE__; \
-		if (error_reported != _error_code) { __VA_ARGS__; error_reported = _error_code; } \
-	}
-
-static void *_video_rtp_thread(UNUSED void *arg) {
-	US_THREAD_RENAME("us_video_rtp");
+static void *_video_rtp_thread(void *arg) {
+	(void)arg;
+	US_THREAD_SETTLE("us_video_rtp");
 	atomic_store(&_g_video_rtp_tid_created, true);
 
 	while (!_STOP) {
-		us_frame_s *frame;
-		if (us_queue_get(_g_video_queue, (void **)&frame, 0.1) == 0) {
+		const int ri = us_ring_consumer_acquire(_g_video_ring, 0.1);
+		if (ri >= 0) {
+			const us_frame_s *const frame = _g_video_ring->items[ri];
 			_LOCK_VIDEO;
-			us_rtpv_wrap(_g_rtpv, frame);
+			const bool zero_playout_delay = (frame->gop == 0);
+			us_rtpv_wrap(_g_rtpv, frame, zero_playout_delay);
 			_UNLOCK_VIDEO;
-			us_frame_destroy(frame);
+			us_ring_consumer_release(_g_video_ring, ri);
 		}
 	}
 	return NULL;
 }
 
-static void *_video_sink_thread(UNUSED void *arg) {
-	US_THREAD_RENAME("us_video_sink");
+static void *_video_sink_thread(void *arg) {
+	(void)arg;
+	US_THREAD_SETTLE("us_video_sink");
 	atomic_store(&_g_video_sink_tid_created, true);
 
-	uint64_t frame_id = 0;
-	unsigned error_reported = 0;
+	us_frame_s *drop = us_frame_init();
+	u64 frame_id = 0;
+	int once = 0;
 
 	while (!_STOP) {
 		if (!_HAS_WATCHERS) {
-			_IF_NOT_REPORTED({ US_JLOG_INFO("video", "No active watchers, memsink disconnected"); });
+			US_ONCE({ US_JLOG_INFO("video", "No active watchers, memsink disconnected"); });
 			usleep(_g_watchers_polling);
 			continue;
 		}
@@ -136,93 +137,113 @@ static void *_video_sink_thread(UNUSED void *arg) {
 		us_memsink_shared_s *mem = NULL;
 
 		if ((fd = shm_open(_g_config->video_sink_name, O_RDWR, 0)) <= 0) {
-			_IF_NOT_REPORTED({ US_JLOG_PERROR("video", "Can't open memsink"); });
+			US_ONCE({ US_JLOG_PERROR("video", "Can't open memsink"); });
 			goto close_memsink;
 		}
 
 		if ((mem = us_memsink_shared_map(fd)) == NULL) {
-			_IF_NOT_REPORTED({ US_JLOG_PERROR("video", "Can't map memsink"); });
+			US_ONCE({ US_JLOG_PERROR("video", "Can't map memsink"); });
 			goto close_memsink;
 		}
 
-		error_reported = 0;
+		once = 0;
 
 		US_JLOG_INFO("video", "Memsink opened; reading frames ...");
 		while (!_STOP && _HAS_WATCHERS) {
-			const int result = us_memsink_fd_wait_frame(fd, mem, frame_id);
-			if (result == 0) {
-				us_frame_s *const frame = us_memsink_fd_get_frame(fd, mem, &frame_id, atomic_load(&_g_key_required));
-				if (frame == NULL) {
+			const int waited = us_memsink_fd_wait_frame(fd, mem, frame_id);
+			if (waited == 0) {
+				const int ri = us_ring_producer_acquire(_g_video_ring, 0);
+				us_frame_s *frame;
+				if (ri >= 0) {
+					frame = _g_video_ring->items[ri];
+				} else {
+					US_ONCE({ US_JLOG_PERROR("video", "Video ring is full"); });
+					frame = drop;
+				}
+
+				const int got = us_memsink_fd_get_frame(fd, mem, frame, &frame_id, atomic_load(&_g_key_required));
+				if (ri >= 0) {
+					us_ring_producer_release(_g_video_ring, ri);
+				}
+				if (got < 0) {
 					goto close_memsink;
 				}
-				if (frame->key) {
+
+				if (ri >= 0 && frame->key) {
 					atomic_store(&_g_key_required, false);
 				}
-				if (us_queue_put(_g_video_queue, frame, 0) != 0) {
-					_IF_NOT_REPORTED({ US_JLOG_PERROR("video", "Video queue is full"); });
-					us_frame_destroy(frame);
-				}
-			} else if (result == -1) {
+			} else if (waited != -2) {
 				goto close_memsink;
 			}
 		}
 
-		close_memsink:
-			if (mem != NULL) {
-				US_JLOG_INFO("video", "Memsink closed");
-				us_memsink_shared_unmap(mem);
-			}
-			if (fd >= 0) {
-				close(fd);
-			}
-			sleep(1); // error_delay
+	close_memsink:
+		US_DELETE(mem, us_memsink_shared_unmap);
+		US_CLOSE_FD(fd);
+		US_JLOG_INFO("video", "Memsink closed");
+		sleep(1); // error_delay
 	}
+
+	us_frame_destroy(drop);
 	return NULL;
 }
 
-static void *_audio_thread(UNUSED void *arg) {
-	US_THREAD_RENAME("us_audio");
+static int _check_tc358743_audio(uint *audio_hz) {
+	int fd;
+	if ((fd = open(_g_config->tc358743_dev_path, O_RDWR)) < 0) {
+		US_JLOG_PERROR("audio", "Can't open TC358743 V4L2 device");
+		return -1;
+	}
+	const int checked = us_tc358743_xioctl_get_audio_hz(fd, audio_hz);
+	if (checked < 0) {
+		US_JLOG_PERROR("audio", "Can't check TC358743 audio state (%d)", checked);
+		close(fd);
+		return -1;
+	}
+	close(fd);
+	return 0;
+}
+
+static void *_audio_thread(void *arg) {
+	(void)arg;
+	US_THREAD_SETTLE("us_audio");
 	atomic_store(&_g_audio_tid_created, true);
+
 	assert(_g_config->audio_dev_name != NULL);
 	assert(_g_config->tc358743_dev_path != NULL);
 
-	unsigned error_reported = 0;
+	int once = 0;
 
 	while (!_STOP) {
-		if (!_HAS_WATCHERS) {
+		if (!_HAS_WATCHERS || !_HAS_LISTENERS) {
 			usleep(_g_watchers_polling);
 			continue;
 		}
 
-		us_tc358743_info_s info = {0};
+		uint audio_hz = 0;
 		us_audio_s *audio = NULL;
 
-		if (us_tc358743_read_info(_g_config->tc358743_dev_path, &info) < 0) {
+		if (_check_tc358743_audio(&audio_hz) < 0) {
 			goto close_audio;
 		}
-		if (!info.has_audio) {
-			_IF_NOT_REPORTED({ US_JLOG_INFO("audio", "No audio presented from the host"); });
+		if (audio_hz == 0) {
+			US_ONCE({ US_JLOG_INFO("audio", "No audio presented from the host"); });
 			goto close_audio;
 		}
-		_IF_NOT_REPORTED({ US_JLOG_INFO("audio", "Detected host audio"); });
-		if ((audio = us_audio_init(_g_config->audio_dev_name, info.audio_hz)) == NULL) {
+		US_ONCE({ US_JLOG_INFO("audio", "Detected host audio"); });
+		if ((audio = us_audio_init(_g_config->audio_dev_name, audio_hz)) == NULL) {
 			goto close_audio;
 		}
 
-		error_reported = 0;
+		once = 0;
 
-		while (!_STOP && _HAS_WATCHERS) {
-			if (
-				us_tc358743_read_info(_g_config->tc358743_dev_path, &info) < 0
-				|| !info.has_audio
-				|| audio->pcm_hz != info.audio_hz
-			) {
+		while (!_STOP && _HAS_WATCHERS && _HAS_LISTENERS) {
+			if (_check_tc358743_audio(&audio_hz) < 0 || audio->pcm_hz != audio_hz) {
 				goto close_audio;
 			}
-
-			size_t size = US_RTP_DATAGRAM_SIZE - US_RTP_HEADER_SIZE;
-			uint8_t data[size];
-			uint64_t pts;
+			uz size = US_RTP_DATAGRAM_SIZE - US_RTP_HEADER_SIZE;
+			u8 data[size];
+			u64 pts;
 			const int result = us_audio_get_encoded(audio, data, &size, &pts);
 			if (result == 0) {
 				_LOCK_AUDIO;
@@ -233,15 +254,13 @@ static void *_audio_thread(UNUSED void *arg) {
 			}
 		}
 
-		close_audio:
-			US_DELETE(audio, us_audio_destroy);
-			sleep(1); // error_delay
+	close_audio:
+		US_DELETE(audio, us_audio_destroy);
+		sleep(1); // error_delay
 	}
 	return NULL;
 }
 
-#undef _IF_NOT_REPORTED
-
 static void _relay_rtp_clients(const us_rtp_s *rtp) {
 	US_LIST_ITERATE(_g_clients, client, {
 		us_janus_client_send(client, rtp);
@@ -261,9 +280,9 @@ static int _plugin_init(janus_callbacks *gw, const char *config_dir_path) {
 	}
 	_g_gw = gw;
 
-	_g_video_queue = us_queue_init(1024);
-	_g_rtpv = us_rtpv_init(_relay_rtp_clients, _g_config->video_zero_playout_delay);
-	if (_g_config->audio_dev_name != NULL) {
+	US_RING_INIT_WITH_ITEMS(_g_video_ring, 64, us_frame_init);
+	_g_rtpv = us_rtpv_init(_relay_rtp_clients);
+	if (_g_config->audio_dev_name != NULL && us_audio_probe(_g_config->audio_dev_name)) {
 		_g_rtpa = us_rtpa_init(_relay_rtp_clients);
 		US_THREAD_CREATE(_g_audio_tid, _audio_thread, NULL);
 	}
@@ -289,7 +308,7 @@ static void _plugin_destroy(void) {
 		us_janus_client_destroy(client);
 	});
 
-	US_QUEUE_DELETE_WITH_ITEMS(_g_video_queue, us_frame_destroy);
+	US_RING_DELETE_WITH_ITEMS(_g_video_ring, us_frame_destroy);
 
 	US_DELETE(_g_rtpa, us_rtpa_destroy);
 	US_DELETE(_g_rtpv, us_rtpv_destroy);
@@ -302,7 +321,7 @@ static void _plugin_create_session(janus_plugin_session *session, int *err) {
 	_IF_DISABLED({ *err = -1; return; });
 	_LOCK_ALL;
 	US_JLOG_INFO("main", "Creating session %p ...", session);
-	us_janus_client_s *const client = us_janus_client_init(_g_gw, session, (_g_config->audio_dev_name != NULL));
+	us_janus_client_s *const client = us_janus_client_init(_g_gw, session);
 	US_LIST_APPEND(_g_clients, client);
 	atomic_store(&_g_has_watchers, true);
 	_UNLOCK_ALL;
@@ -313,6 +332,7 @@ static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
 	_LOCK_ALL;
 	bool found = false;
 	bool has_watchers = false;
+	bool has_listeners = false;
 	US_LIST_ITERATE(_g_clients, client, {
 		if (client->session == session) {
 			US_JLOG_INFO("main", "Removing session %p ...", session);
@@ -321,6 +341,7 @@ static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
 			found = true;
 		} else {
 			has_watchers = (has_watchers || atomic_load(&client->transmit));
+			has_listeners = (has_listeners || atomic_load(&client->transmit_audio));
 		}
 	});
 	if (!found) {
@@ -328,6 +349,7 @@ static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
 		*err = -2;
 	}
 	atomic_store(&_g_has_watchers, has_watchers);
+	atomic_store(&_g_has_listeners, has_listeners);
 	_UNLOCK_ALL;
 }
 
@@ -345,7 +367,8 @@ static json_t *_plugin_query_session(janus_plugin_session *session) {
 	return info;
 }
 
-static void _set_transmit(janus_plugin_session *session, UNUSED const char *msg, bool transmit) {
+static void _set_transmit(janus_plugin_session *session, const char *msg, bool transmit) {
+	(void)msg;
 	_IF_DISABLED({ return; });
 	_LOCK_ALL;
 	bool found = false;
@@ -396,40 +419,67 @@ static struct janus_plugin_result *_plugin_handle_message(
 			json_decref(m_event); \
 		}
 
-	json_t *const request_obj = json_object_get(msg, "request");
-	if (request_obj == NULL) {
+	json_t *const request = json_object_get(msg, "request");
+	if (request == NULL) {
 		PUSH_ERROR(400, "Request missing");
 		goto ok_wait;
 	}
 
-	const char *const request_str = json_string_value(request_obj);
+	const char *const request_str = json_string_value(request);
 	if (request_str == NULL) {
 		PUSH_ERROR(400, "Request not a string");
 		goto ok_wait;
 	}
 	// US_JLOG_INFO("main", "Message: %s", request_str);
 
-#	define PUSH_STATUS(x_status, x_jsep) { \
+#	define PUSH_STATUS(x_status, x_payload, x_jsep) { \
 			json_t *const m_event = json_object(); \
 			json_object_set_new(m_event, "ustreamer", json_string("event")); \
 			json_t *const m_result = json_object(); \
 			json_object_set_new(m_result, "status", json_string(x_status)); \
+			if (x_payload != NULL) { \
+				json_object_set_new(m_result, x_status, x_payload); \
+			} \
 			json_object_set_new(m_event, "result", m_result); \
 			_g_gw->push_event(session, create(), transaction, m_event, x_jsep); \
 			json_decref(m_event); \
 		}
 
 	if (!strcmp(request_str, "start")) {
-		PUSH_STATUS("started", NULL);
+		PUSH_STATUS("started", NULL, NULL);
 
 	} else if (!strcmp(request_str, "stop")) {
-		PUSH_STATUS("stopped", NULL);
+		PUSH_STATUS("stopped", NULL, NULL);
 
 	} else if (!strcmp(request_str, "watch")) {
-		char *sdp;
+		bool with_audio = false;
+		uint video_orient = 0;
 		{
+			json_t *const params = json_object_get(msg, "params");
+			if (params != NULL) {
+				{
+					json_t *const obj = json_object_get(params, "audio");
+					if (obj != NULL && json_is_boolean(obj)) {
+						with_audio = (_g_rtpa != NULL && json_boolean_value(obj));
+					}
+				}
+				{
+					json_t *const obj = json_object_get(params, "orientation");
+					if (obj != NULL && json_is_integer(obj)) {
+						video_orient = json_integer_value(obj);
+						switch (video_orient) {
+							case 90: case 180: case 270: break;
+							default: video_orient = 0; break;
+						}
+					}
+				}
+			}
+		}
+
+		{
+			char *sdp;
 			char *const video_sdp = us_rtpv_make_sdp(_g_rtpv);
-			char *const audio_sdp = (_g_rtpa ? us_rtpa_make_sdp(_g_rtpa) : us_strdup(""));
+			char *const audio_sdp = (with_audio ? us_rtpa_make_sdp(_g_rtpa) : us_strdup(""));
 			US_ASPRINTF(sdp,
 				"v=0" RN
 				"o=- %" PRIu64 " 1 IN IP4 0.0.0.0" RN
@@ -447,13 +497,32 @@ static struct janus_plugin_result *_plugin_handle_message(
 				audio_sdp, video_sdp
 #				endif
 			);
+			json_t *const offer_jsep = json_pack("{ssss}", "type", "offer", "sdp", sdp);
+			PUSH_STATUS("started", NULL, offer_jsep);
+			json_decref(offer_jsep);
 			free(audio_sdp);
 			free(video_sdp);
+			free(sdp);
 		}
-		json_t *const offer_jsep = json_pack("{ssss}", "type", "offer", "sdp", sdp);
-		free(sdp);
-		PUSH_STATUS("started", offer_jsep);
-		json_decref(offer_jsep);
+
+		{
+			_LOCK_ALL;
+			bool has_listeners = false;
+			US_LIST_ITERATE(_g_clients, client, {
+				if (client->session == session) {
+					atomic_store(&client->transmit_audio, with_audio);
+					atomic_store(&client->video_orient, video_orient);
+				}
+				has_listeners = (has_listeners || atomic_load(&client->transmit_audio));
+			});
+			atomic_store(&_g_has_listeners, has_listeners);
+			_UNLOCK_ALL;
+		}
+
+	} else if (!strcmp(request_str, "features")) {
+		json_t *const features = json_pack("{sb}", "audio", (_g_rtpa != NULL));
+		PUSH_STATUS("features", features, NULL);
+		json_decref(features);
 
 	} else if (!strcmp(request_str, "key_required")) {
 		// US_JLOG_INFO("main", "Got key_required message");
@@ -463,16 +532,18 @@ static struct janus_plugin_result *_plugin_handle_message(
 		PUSH_ERROR(405, "Not implemented");
 	}
 
-	ok_wait:
-		FREE_MSG_JSEP;
-		return janus_plugin_result_new(JANUS_PLUGIN_OK_WAIT, NULL, NULL);
+ok_wait:
+	FREE_MSG_JSEP;
+	return janus_plugin_result_new(JANUS_PLUGIN_OK_WAIT, NULL, NULL);
 
 #	undef PUSH_STATUS
 #	undef PUSH_ERROR
 #	undef FREE_MSG_JSEP
 }
 
-static void _plugin_incoming_rtcp(UNUSED janus_plugin_session *handle, UNUSED janus_plugin_rtcp *packet) {
+static void _plugin_incoming_rtcp(janus_plugin_session *handle, janus_plugin_rtcp *packet) {
+	(void)handle;
+	(void)packet;
 	if (packet->video && janus_rtcp_has_pli(packet->buffer, packet->length)) {
 		// US_JLOG_INFO("main", "Got video PLI");
 		atomic_store(&_g_key_required, true);

janus/src/rtp.c

@@ -5,7 +5,7 @@
 #    This source file is partially based on this code:                       #
 #      - https://github.com/catid/kvm/blob/master/kvm_pipeline/src           #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -25,30 +25,30 @@
 
 #include "rtp.h"
 
+#include <stdlib.h>
 
-us_rtp_s *us_rtp_init(unsigned payload, bool video, bool zero_playout_delay) {
+#include "uslibs/types.h"
+#include "uslibs/tools.h"
+
+
+us_rtp_s *us_rtp_init(void) {
 	us_rtp_s *rtp;
 	US_CALLOC(rtp, 1);
-	rtp->payload = payload;
-	rtp->video = video;
-	rtp->zero_playout_delay = zero_playout_delay; // See client.c
-	rtp->ssrc = us_triple_u32(us_get_now_monotonic_u64());
 	return rtp;
 }
 
-us_rtp_s *us_rtp_dup(const us_rtp_s *rtp) {
-	us_rtp_s *new;
-	US_CALLOC(new, 1);
-	memcpy(new, rtp, sizeof(us_rtp_s));
-	return new;
-}
-
 void us_rtp_destroy(us_rtp_s *rtp) {
 	free(rtp);
 }
 
-void us_rtp_write_header(us_rtp_s *rtp, uint32_t pts, bool marked) {
-	uint32_t word0 = 0x80000000;
+void us_rtp_assign(us_rtp_s *rtp, uint payload, bool video) {
+	rtp->payload = payload;
+	rtp->video = video;
+	rtp->ssrc = us_triple_u32(us_get_now_monotonic_u64());
+}
+
+void us_rtp_write_header(us_rtp_s *rtp, u32 pts, bool marked) {
+	u32 word0 = 0x80000000;
 	if (marked) {
 		word0 |= 1 << 23;
 	}
@@ -56,7 +56,8 @@ void us_rtp_write_header(us_rtp_s *rtp, uint32_t pts, bool marked) {
 	word0 |= rtp->seq;
 	++rtp->seq;
 
-#	define WRITE_BE_U32(_offset, _value) *((uint32_t *)(rtp->datagram + _offset)) = __builtin_bswap32(_value)
+#	define WRITE_BE_U32(x_offset, x_value) \
+		*((u32 *)(rtp->datagram + x_offset)) = __builtin_bswap32(x_value)
 	WRITE_BE_U32(0, word0);
 	WRITE_BE_U32(4, pts);
 	WRITE_BE_U32(8, rtp->ssrc);

janus/src/rtp.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,13 +22,7 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-
-#include <sys/types.h>
-
-#include "uslibs/tools.h"
+#include "uslibs/types.h"
 
 
 // https://stackoverflow.com/questions/47635545/why-webrtc-chose-rtp-max-packet-size-to-1200-bytes
@@ -37,21 +31,21 @@
 
 
 typedef struct {
-	unsigned	payload;
-	bool		video;
-	bool		zero_playout_delay;
-	uint32_t	ssrc;
+	uint	payload;
+	bool	video;
+	u32		ssrc;
 
-	uint16_t	seq;
-	uint8_t		datagram[US_RTP_DATAGRAM_SIZE];
-	size_t		used;
+	u16		seq;
+	u8		datagram[US_RTP_DATAGRAM_SIZE];
+	uz		used;
+	bool	zero_playout_delay;
 } us_rtp_s;
 
 typedef void (*us_rtp_callback_f)(const us_rtp_s *rtp);
 
 
-us_rtp_s *us_rtp_init(unsigned payload, bool video, bool zero_playout_delay);
-us_rtp_s *us_rtp_dup(const us_rtp_s *rtp);
+us_rtp_s *us_rtp_init(void);
 void us_rtp_destroy(us_rtp_s *rtp);
 
-void us_rtp_write_header(us_rtp_s *rtp, uint32_t pts, bool marked);
+void us_rtp_assign(us_rtp_s *rtp, uint payload, bool video);
+void us_rtp_write_header(us_rtp_s *rtp, u32 pts, bool marked);

janus/src/rtpa.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,11 +22,18 @@
 
 #include "rtpa.h"
 
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "uslibs/types.h"
+#include "uslibs/tools.h"
+
 
 us_rtpa_s *us_rtpa_init(us_rtp_callback_f callback) {
 	us_rtpa_s *rtpa;
 	US_CALLOC(rtpa, 1);
-	rtpa->rtp = us_rtp_init(111, false, false);
+	rtpa->rtp = us_rtp_init();
+	us_rtp_assign(rtpa->rtp, 111, false);
 	rtpa->callback = callback;
 	return rtpa;
 }
@@ -37,7 +44,7 @@ void us_rtpa_destroy(us_rtpa_s *rtpa) {
 }
 
 char *us_rtpa_make_sdp(us_rtpa_s *rtpa) {
-#	define PAYLOAD rtpa->rtp->payload
+	const uint pl = rtpa->rtp->payload;
 	char *sdp;
 	US_ASPRINTF(sdp,
 		"m=audio 1 RTP/SAVPF %u" RN
@@ -49,14 +56,13 @@ char *us_rtpa_make_sdp(us_rtpa_s *rtpa) {
 		"a=rtcp-fb:%u goog-remb" RN
 		"a=ssrc:%" PRIu32 " cname:ustreamer" RN
 		"a=sendonly" RN,
-		PAYLOAD, PAYLOAD, PAYLOAD, PAYLOAD, PAYLOAD, // PAYLOAD,
+		pl, pl, pl, pl, pl, // pl,
 		rtpa->rtp->ssrc
 	);
-#	undef PAYLOAD
 	return sdp;
 }
 
-void us_rtpa_wrap(us_rtpa_s *rtpa, const uint8_t *data, size_t size, uint32_t pts) {
+void us_rtpa_wrap(us_rtpa_s *rtpa, const u8 *data, uz size, u32 pts) {
     if (size + US_RTP_HEADER_SIZE <= US_RTP_DATAGRAM_SIZE) {
         us_rtp_write_header(rtpa->rtp, pts, false);
         memcpy(rtpa->rtp->datagram + US_RTP_HEADER_SIZE, data, size);

janus/src/rtpa.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,15 +22,7 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <inttypes.h>
-
-#include <sys/types.h>
-
-#include "uslibs/tools.h"
-#include "uslibs/threading.h"
+#include "uslibs/types.h"
 
 #include "rtp.h"
 
@@ -45,4 +37,4 @@ us_rtpa_s *us_rtpa_init(us_rtp_callback_f callback);
 void us_rtpa_destroy(us_rtpa_s *rtpa);
 
 char *us_rtpa_make_sdp(us_rtpa_s *rtpa);
-void us_rtpa_wrap(us_rtpa_s *rtpa, const uint8_t *data, size_t size, uint32_t pts);
+void us_rtpa_wrap(us_rtpa_s *rtpa, const u8 *data, uz size, u32 pts);

janus/src/rtpv.c

@@ -5,7 +5,7 @@
 #    This source file is partially based on this code:                       #
 #      - https://github.com/catid/kvm/blob/master/kvm_pipeline/src           #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -25,16 +25,27 @@
 
 #include "rtpv.h"
 
+#include <stdlib.h>
+#include <inttypes.h>
+#include <assert.h>
 
-void _rtpv_process_nalu(us_rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t pts, bool marked);
+#include <linux/videodev2.h>
 
-static ssize_t _find_annexb(const uint8_t *data, size_t size);
+#include "uslibs/types.h"
+#include "uslibs/tools.h"
+#include "uslibs/frame.h"
 
 
-us_rtpv_s *us_rtpv_init(us_rtp_callback_f callback, bool zero_playout_delay) {
+void _rtpv_process_nalu(us_rtpv_s *rtpv, const u8 *data, uz size, u32 pts, bool marked);
+
+static sz _find_annexb(const u8 *data, uz size);
+
+
+us_rtpv_s *us_rtpv_init(us_rtp_callback_f callback) {
 	us_rtpv_s *rtpv;
 	US_CALLOC(rtpv, 1);
-	rtpv->rtp = us_rtp_init(96, true, zero_playout_delay);
+	rtpv->rtp = us_rtp_init();
+	us_rtp_assign(rtpv->rtp, 96, true);
 	rtpv->callback = callback;
 	return rtpv;
 }
@@ -45,9 +56,9 @@ void us_rtpv_destroy(us_rtpv_s *rtpv) {
 }
 
 char *us_rtpv_make_sdp(us_rtpv_s *rtpv) {
-#	define PAYLOAD rtpv->rtp->payload
 	// https://tools.ietf.org/html/rfc6184
 	// https://github.com/meetecho/janus-gateway/issues/2443
+	const uint pl = rtpv->rtp->payload;
 	char *sdp;
 	US_ASPRINTF(sdp,
 		"m=video 1 RTP/SAVPF %u" RN
@@ -59,39 +70,40 @@ char *us_rtpv_make_sdp(us_rtpv_s *rtpv) {
 		"a=rtcp-fb:%u nack pli" RN
 		"a=rtcp-fb:%u goog-remb" RN
 		"a=ssrc:%" PRIu32 " cname:ustreamer" RN
-		"%s" // playout-delay
+		"a=extmap:1 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay" RN
+		"a=extmap:2 urn:3gpp:video-orientation" RN
 		"a=sendonly" RN,
-		PAYLOAD, PAYLOAD, PAYLOAD, PAYLOAD,
-		PAYLOAD, PAYLOAD, PAYLOAD,
-		rtpv->rtp->ssrc,
-		(rtpv->rtp->zero_playout_delay ? "a=extmap:1 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay" RN : "")
+		pl, pl, pl, pl,
+		pl, pl, pl,
+		rtpv->rtp->ssrc
 	);
 	return sdp;
-#	undef PAYLOAD
 }
 
 #define _PRE 3 // Annex B prefix length
 
-void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame) {
+void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame, bool zero_playout_delay) {
 	// There is a complicated logic here but everything works as it should:
 	//   - https://github.com/pikvm/ustreamer/issues/115#issuecomment-893071775
 
 	assert(frame->format == V4L2_PIX_FMT_H264);
 
-	const uint32_t pts = us_get_now_monotonic_u64() * 9 / 100; // PTS units are in 90 kHz
-	ssize_t last_offset = -_PRE;
+	rtpv->rtp->zero_playout_delay = zero_playout_delay;
+
+	const u32 pts = us_get_now_monotonic_u64() * 9 / 100; // PTS units are in 90 kHz
+	sz last_offset = -_PRE;
 
 	while (true) { // Find and iterate by nalus
-		const size_t next_start = last_offset + _PRE;
-		ssize_t offset = _find_annexb(frame->data + next_start, frame->used - next_start);
+		const uz next_start = last_offset + _PRE;
+		sz offset = _find_annexb(frame->data + next_start, frame->used - next_start);
 		if (offset < 0) {
 			break;
 		}
 		offset += next_start;
 
 		if (last_offset >= 0) {
-			const uint8_t *const data = frame->data + last_offset + _PRE;
-			size_t size = offset - last_offset - _PRE;
+			const u8 *const data = frame->data + last_offset + _PRE;
+			uz size = offset - last_offset - _PRE;
 			if (data[size - 1] == 0) { // Check for extra 00
 				--size;
 			}
@@ -102,34 +114,33 @@ void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame) {
 	}
 
 	if (last_offset >= 0) {
-		const uint8_t *const data = frame->data + last_offset + _PRE;
-		size_t size = frame->used - last_offset - _PRE;
+		const u8 *const data = frame->data + last_offset + _PRE;
+		uz size = frame->used - last_offset - _PRE;
 		_rtpv_process_nalu(rtpv, data, size, pts, true);
 	}
 }
 
-void _rtpv_process_nalu(us_rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t pts, bool marked) {
-#	define DG rtpv->rtp->datagram
-
-	const unsigned ref_idc = (data[0] >> 5) & 3;
-	const unsigned type = data[0] & 0x1F;
+void _rtpv_process_nalu(us_rtpv_s *rtpv, const u8 *data, uz size, u32 pts, bool marked) {
+	const uint ref_idc = (data[0] >> 5) & 3;
+	const uint type = data[0] & 0x1F;
+	u8 *dg = rtpv->rtp->datagram;
 
 	if (size + US_RTP_HEADER_SIZE <= US_RTP_DATAGRAM_SIZE) {
 		us_rtp_write_header(rtpv->rtp, pts, marked);
-		memcpy(DG + US_RTP_HEADER_SIZE, data, size);
+		memcpy(dg + US_RTP_HEADER_SIZE, data, size);
 		rtpv->rtp->used = size + US_RTP_HEADER_SIZE;
 		rtpv->callback(rtpv->rtp);
 		return;
 	}
 
-	const size_t fu_overhead = US_RTP_HEADER_SIZE + 2; // FU-A overhead
+	const uz fu_overhead = US_RTP_HEADER_SIZE + 2; // FU-A overhead
 
-	const uint8_t *src = data + 1;
-	ssize_t remaining = size - 1;
+	const u8 *src = data + 1;
+	sz remaining = size - 1;
 
 	bool first = true;
 	while (remaining > 0) {
-		ssize_t frag_size = US_RTP_DATAGRAM_SIZE - fu_overhead;
+		sz frag_size = US_RTP_DATAGRAM_SIZE - fu_overhead;
 		const bool last = (remaining <= frag_size);
 		if (last) {
 			frag_size = remaining;
@@ -137,18 +148,18 @@ void _rtpv_process_nalu(us_rtpv_s *rtpv, const uint8_t *data, size_t size, uint3
 
 		us_rtp_write_header(rtpv->rtp, pts, (marked && last));
 
-		DG[US_RTP_HEADER_SIZE] = 28 | (ref_idc << 5);
+		dg[US_RTP_HEADER_SIZE] = 28 | (ref_idc << 5);
 
-		uint8_t fu = type;
+		u8 fu = type;
 		if (first) {
 			fu |= 0x80;
 		}
 		if (last) {
 			fu |= 0x40;
 		}
-		DG[US_RTP_HEADER_SIZE + 1] = fu;
+		dg[US_RTP_HEADER_SIZE + 1] = fu;
 
-		memcpy(DG + fu_overhead, src, frag_size);
+		memcpy(dg + fu_overhead, src, frag_size);
 		rtpv->rtp->used = fu_overhead + frag_size;
 		rtpv->callback(rtpv->rtp);
 
@@ -156,14 +167,12 @@ void _rtpv_process_nalu(us_rtpv_s *rtpv, const uint8_t *data, size_t size, uint3
 		remaining -= frag_size;
 		first = false;
 	}
-
-#	undef DG
 }
 
-static ssize_t _find_annexb(const uint8_t *data, size_t size) {
+static sz _find_annexb(const u8 *data, uz size) {
 	// Parses buffer for 00 00 01 start codes
 	if (size >= _PRE) {
-		for (size_t index = 0; index <= size - _PRE; ++index) {
+		for (uz index = 0; index <= size - _PRE; ++index) {
 			if (data[index] == 0 && data[index + 1] == 0 && data[index + 2] == 1) {
 				return index;
 			}

janus/src/rtpv.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,16 +22,7 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <assert.h>
-
-#include <sys/types.h>
-#include <linux/videodev2.h>
-
-#include "uslibs/tools.h"
+#include "uslibs/types.h"
 #include "uslibs/frame.h"
 
 #include "rtp.h"
@@ -43,8 +34,8 @@ typedef struct {
 } us_rtpv_s;
 
 
-us_rtpv_s *us_rtpv_init(us_rtp_callback_f callback, bool zero_playout_delay);
+us_rtpv_s *us_rtpv_init(us_rtp_callback_f callback);
 void us_rtpv_destroy(us_rtpv_s *rtpv);
 
 char *us_rtpv_make_sdp(us_rtpv_s *rtpv);
-void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame);
+void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame, bool zero_playout_delay);

janus/src/uslibs/queue.c

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

janus/src/uslibs/queue.h

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

janus/src/uslibs/ring.c

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

janus/src/uslibs/ring.h

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

janus/src/uslibs/tc358743.c

@@ -0,0 +1 @@
+../../../src/libs/tc358743.c

janus/src/uslibs/tc358743.h

@@ -0,0 +1 @@
+../../../src/libs/tc358743.h

janus/src/uslibs/types.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -19,28 +19,26 @@
 #                                                                            #
 *****************************************************************************/
 
-
 #pragma once
 
-#include <unistd.h>
-#include <fcntl.h>
+#include <stdio.h>
 #include <stdbool.h>
-
-#include <sys/types.h>
-
-#include <linux/videodev2.h>
-#include <linux/v4l2-controls.h>
-
-#include "uslibs/tools.h"
-#include "uslibs/xioctl.h"
-
-#include "logging.h"
+#include <stdint.h>
 
 
-typedef struct {
-	bool		has_audio;
-	unsigned	audio_hz;
-} us_tc358743_info_s;
+typedef long long sll;
+typedef ssize_t sz;
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
 
+typedef unsigned uint;
+typedef unsigned long long ull;
+typedef size_t uz;
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
 
-int us_tc358743_read_info(const char *path, us_tc358743_info_s *info);
+typedef long double ldf;

linters/Dockerfile

@@ -1,4 +1,4 @@
-FROM archlinux/archlinux:base-devel
+FROM archlinux/archlinux:base
 
 RUN mkdir -p /etc/pacman.d/hooks \
 	&& ln -s /dev/null /etc/pacman.d/hooks/30-systemd-tmpfiles.hook

linters/cppcheck.h

@@ -2,5 +2,3 @@
 #define WITH_GPIO
 #define JANUS_PLUGIN_INIT(...) { __VA_ARGS__ }
 #define EVTHREAD_USE_PTHREADS_IMPLEMENTED 1
-#define CLOCK_MONOTONIC_RAW 1
-#define CLOCK_MONOTONIC_FAST 1

linters/pylint.ini

@@ -33,7 +33,7 @@ max-line-length = 160
 
 [BASIC]
 # Good variable names which should always be accepted, separated by a comma
-good-names = _, __, x, y, ws, make-html-h, make-jpeg-h, make-ico-h
+good-names = _, __, x, y, ws, make-html-h, make-ico-h
 
 # Regular expression matching correct method names
 method-rgx = [a-z_][a-z0-9_]{2,50}$

linters/tox.ini

@@ -3,50 +3,49 @@ envlist = cppcheck, flake8, pylint, mypy, vulture, htmlhint
 skipsdist = true
 
 [testenv]
-basepython = python3.10
+basepython = python3.11
 changedir = /src
 
 [testenv:cppcheck]
-whitelist_externals = cppcheck
+allowlist_externals = cppcheck
 commands = cppcheck \
-			-j4 \
 			--force \
 			--std=c17 \
 			--error-exitcode=1 \
 			--quiet \
-			--enable=warning,unusedFunction,portability,performance,style \
+			--enable=warning,portability,performance,style \
 			--suppress=assignmentInAssert \
 			--suppress=variableScope \
 			--inline-suppr \
 			--library=python \
 			--include=linters/cppcheck.h \
-		src python/*.? janus/*.?
+		src python/src/*.? janus/src/*.?
 
 [testenv:flake8]
-whitelist_externals = bash
+allowlist_externals = bash
 commands = bash -c 'flake8 --config=linters/flake8.ini tools/*.py' python/*.py
 deps =
-	flake8
+	flake8==5.0.4
 	flake8-quotes
 
 [testenv:pylint]
-whitelist_externals = bash
+allowlist_externals = bash
 commands = bash -c 'pylint --rcfile=linters/pylint.ini --output-format=colorized --reports=no tools/*.py python/*.py'
 deps =
 	pylint
 
 [testenv:mypy]
-whitelist_externals = bash
+allowlist_externals = bash
 commands = bash -c 'mypy --config-file=linters/mypy.ini tools/*.py python/*.py'
 deps =
 	mypy
 
 [testenv:vulture]
-whitelist_externals = bash
+allowlist_externals = bash
 commands = bash -c 'vulture tools/*.py python/*.py'
 deps =
 	vulture
 
 [testenv:htmlhint]
-whitelist_externals = htmlhint
+allowlist_externals = htmlhint
 commands = htmlhint src/ustreamer/http/data/*.html

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 5.31" "January 2021"
+.TH USTREAMER-DUMP 1 "version 6.4" "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 5.31" "November 2020"
+.TH USTREAMER 1 "version 6.4" "November 2020"
 
 .SH NAME
 ustreamer \- stream MJPEG video from any V4L2 device to the network
@@ -17,7 +17,7 @@ Without arguments, \fBustreamer\fR will try to open \fB/dev/video0\fR with 640x4
 
 Please note that since µStreamer v2\.0 cross\-domain requests were disabled by default for security reasons\. To enable the old behavior, use the option \fB\-\-allow\-origin=\e*\fR\.
 
-For example, the recommended way of running µStreamer with Auvidea B101 on a Raspberry Pi is:
+For example, the recommended way of running µStreamer with TC358743-based capture device on a Raspberry Pi is:
 
 \fBustreamer \e\fR
 .RS
@@ -27,7 +27,7 @@ For example, the recommended way of running µStreamer with Auvidea B101 on a Ra
 .nf
 \fB\-\-workers=3 \e\fR # Maximum workers for V4L2 encoder
 .nf
-\fB\-\-persistent \e\fR # Don\'t re\-initialize device on timeout (for example when HDMI cable was disconnected)
+\fB\-\-persistent \e\fR # Suppress repetitive signal source errors (for example when HDMI cable was disconnected)
 .nf
 \fB\-\-dv\-timings \e\fR # Use DV\-timings
 .nf
@@ -52,7 +52,7 @@ Initial image resolution. Default: 640x480.
 .TP
 .BR \-m\ \fIfmt ", " \-\-format\ \fIfmt
 Image format.
-Available: YUYV, UYVY, RGB565, RGB24, JPEG; default: YUYV.
+Available: YUYV, YVYU, UYVY, RGB565, RGB24, JPEG; default: YUYV.
 .TP
 .BR \-a\ \fIstd ", " \-\-tv\-standard\ \fIstd
 Force TV standard.
@@ -69,7 +69,7 @@ Desired FPS. Default: maximum possible.
 Drop frames smaller then this limit. Useful if the device produces small\-sized garbage frames. Default: 128 bytes.
 .TP
 .BR \-n ", " \-\-persistent
-Don't re\-initialize device on timeout. Default: disabled.
+Suppress repetitive signal source errors. Default: disabled.
 .TP
 .BR \-t ", " \-\-dv\-timings
 Enable DV-timings querying and events processing to automatic resolution change. Default: disabled.
@@ -103,10 +103,10 @@ NOOP ─ Don't compress MJPEG stream (do nothing).
 It doesn't do anything. Still here for compatibility.
 .TP
 .BR \-k\ \fIpath ", " \-\-blank\ \fIpath
-Path to JPEG file that will be shown when the device is disconnected during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.
+It doesn't do anything. Still here for compatibility.
 .TP
 .BR \-K\ \fIsec ", " \-\-last\-as\-blank\ \fIsec
-Show the last frame received from the camera after it was disconnected, but no more than specified time (or endlessly if 0 is specified). If the device has not yet been online, display 'NO SIGNAL' or the image specified by option \-\-blank. Note: currently this option has no effect on memory sinks. Default: disabled.
+It doesn't do anything. Still here for compatibility.
 .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.
@@ -248,7 +248,7 @@ Timeout for lock. Default: 1.
 H264 bitrate in Kbps. Default: 5000.
 .TP
 .BR \-\-h264\-gop\ \fIN
-Intarval between keyframes. Default: 30.
+Interval between keyframes. Default: 30.
 .TP
 .BR \-\-h264\-m2m\-device\ \fI/dev/path
 Path to V4L2 mem-to-mem encoder device. Default: auto-select.

pkg/arch/PKGBUILD

@@ -3,7 +3,7 @@
 
 
 pkgname=ustreamer
-pkgver=5.31
+pkgver=6.4
 pkgrel=1
 pkgdesc="Lightweight and fast MJPEG-HTTP streamer"
 url="https://github.com/pikvm/ustreamer"

pkg/docker/Dockerfile.alpine

@@ -24,7 +24,7 @@ RUN apk add --no-cache \
 WORKDIR /ustreamer
 COPY --from=build /build/ustreamer/src/ustreamer.bin ustreamer
 
-RUN wget https://raw.githubusercontent.com/pikvm/kvmd/master/configs/kvmd/tc358743-edid.hex -O /edid.hex
+RUN wget https://raw.githubusercontent.com/pikvm/kvmd/master/configs/kvmd/edid/v3-hdmi.hex -O /edid.hex
 COPY pkg/docker/entry.sh /
 
 EXPOSE 8080

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=5.31
+PKG_VERSION:=6.4
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 

python/Makefile

@@ -9,7 +9,7 @@ PY ?= python3
 # =====
 all:
 	$(info == PY_BUILD ustreamer-*.so)
-	@ $(PY) setup.py build
+	$(ECHO) $(PY) setup.py build
 
 
 install:
@@ -17,4 +17,4 @@ install:
 
 
 clean:
-	rm -rf build
+	rm -rf build ustreamer.egg-info

python/setup.py

@@ -17,7 +17,7 @@ def _find_sources(suffix: str) -> list[str]:
 if __name__ == "__main__":
     setup(
         name="ustreamer",
-        version="5.31",
+        version="6.4",
         description="uStreamer tools",
         author="Maxim Devaev",
         author_email="mdevaev@gmail.com",

python/src/uslibs/types.h

@@ -0,0 +1,44 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+#pragma once
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+
+typedef long long sll;
+typedef ssize_t sz;
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+typedef unsigned uint;
+typedef unsigned long long ull;
+typedef size_t uz;
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef long double ldf;

python/src/ustreamer.c

@@ -13,6 +13,7 @@
 
 #include <Python.h>
 
+#include "uslibs/types.h"
 #include "uslibs/tools.h"
 #include "uslibs/frame.h"
 #include "uslibs/memsinksh.h"
@@ -29,29 +30,16 @@ typedef struct {
 	int					fd;
 	us_memsink_shared_s	*mem;
 
-	uint64_t		frame_id;
-	long double		frame_ts;
+	u64				frame_id;
+	ldf				frame_ts;
 	us_frame_s		*frame;
 } _MemsinkObject;
 
 
-#define _MEM(x_next)	self->mem->x_next
-#define _FRAME(x_next)	self->frame->x_next
-
-
 static void _MemsinkObject_destroy_internals(_MemsinkObject *self) {
-	if (self->mem != NULL) {
-		us_memsink_shared_unmap(self->mem);
-		self->mem = NULL;
-	}
-	if (self->fd >= 0) {
-		close(self->fd);
-		self->fd = -1;
-	}
-	if (self->frame != NULL) {
-		us_frame_destroy(self->frame);
-		self->frame = NULL;
-	}
+	US_DELETE(self->mem, us_memsink_shared_unmap);
+	US_CLOSE_FD(self->fd);
+	US_DELETE(self->frame, us_frame_destroy);
 }
 
 static int _MemsinkObject_init(_MemsinkObject *self, PyObject *args, PyObject *kwargs) {
@@ -65,17 +53,15 @@ static int _MemsinkObject_init(_MemsinkObject *self, PyObject *args, PyObject *k
 		return -1;
 	}
 
-#	define SET_DOUBLE(_field, _cond) { \
-			if (!(self->_field _cond)) { \
-				PyErr_SetString(PyExc_ValueError, #_field " must be " #_cond); \
+#	define SET_DOUBLE(x_field, x_cond) { \
+			if (!(self->x_field x_cond)) { \
+				PyErr_SetString(PyExc_ValueError, #x_field " must be " #x_cond); \
 				return -1; \
 			} \
 		}
-
 	SET_DOUBLE(lock_timeout, > 0);
 	SET_DOUBLE(wait_timeout, > 0);
 	SET_DOUBLE(drop_same_frames, >= 0);
-
 #	undef SET_DOUBLE
 
 	self->frame = us_frame_init();
@@ -84,22 +70,20 @@ static int _MemsinkObject_init(_MemsinkObject *self, PyObject *args, PyObject *k
 		PyErr_SetFromErrno(PyExc_OSError);
 		goto error;
 	}
-
 	if ((self->mem = us_memsink_shared_map(self->fd)) == NULL) {
 		PyErr_SetFromErrno(PyExc_OSError);
 		goto error;
 	}
-
 	return 0;
 
-	error:
-		_MemsinkObject_destroy_internals(self);
-		return -1;
+error:
+	_MemsinkObject_destroy_internals(self);
+	return -1;
 }
 
 static PyObject *_MemsinkObject_repr(_MemsinkObject *self) {
 	char repr[1024];
-	snprintf(repr, 1023, "<Memsink(%s)>", self->obj);
+	US_SNPRINTF(repr, 1023, "<Memsink(%s)>", self->obj);
 	return Py_BuildValue("s", repr);
 }
 
@@ -123,61 +107,67 @@ static PyObject *_MemsinkObject_exit(_MemsinkObject *self, PyObject *Py_UNUSED(i
 }
 
 static int _wait_frame(_MemsinkObject *self) {
-	const long double deadline_ts = us_get_now_monotonic() + self->wait_timeout;
+	const ldf deadline_ts = us_get_now_monotonic() + self->wait_timeout;
 
-#	define RETURN_OS_ERROR { \
-			Py_BLOCK_THREADS \
-			PyErr_SetFromErrno(PyExc_OSError); \
-			return -1; \
-		}
-
-	long double now;
+	int locked = -1;
+	ldf now_ts;
 	do {
 		Py_BEGIN_ALLOW_THREADS
 
-		const int retval = us_flock_timedwait_monotonic(self->fd, self->lock_timeout);
-		now = us_get_now_monotonic();
-
-		if (retval < 0 && errno != EWOULDBLOCK) {
-			RETURN_OS_ERROR;
-
-		} else if (retval == 0) {
-			if (_MEM(magic) == US_MEMSINK_MAGIC && _MEM(version) == US_MEMSINK_VERSION && _MEM(id) != self->frame_id) {
-				if (self->drop_same_frames > 0) {
-					if (
-						US_FRAME_COMPARE_META_USED_NOTS(self->mem, self->frame)
-						&& (self->frame_ts + self->drop_same_frames > now)
-						&& !memcmp(_FRAME(data), _MEM(data), _MEM(used))
-					) {
-						self->frame_id = _MEM(id);
-						goto drop;
-					}
-				}
-
-				Py_BLOCK_THREADS
-				return 0;
+		locked = us_flock_timedwait_monotonic(self->fd, self->lock_timeout);
+		now_ts = us_get_now_monotonic();
+		if (locked < 0) {
+			if (errno == EWOULDBLOCK) {
+				goto retry;
 			}
+			goto os_error;
+		}
 
-			if (flock(self->fd, LOCK_UN) < 0) {
-				RETURN_OS_ERROR;
+		us_memsink_shared_s *mem = self->mem;
+		if (mem->magic != US_MEMSINK_MAGIC || mem->version != US_MEMSINK_VERSION) {
+			goto retry;
+		}
+
+		// Let the sink know that the client is alive
+		mem->last_client_ts = now_ts;
+
+		if (mem->id == self->frame_id) {
+			goto retry;
+		}
+
+		if (self->drop_same_frames > 0) {
+			if (
+				US_FRAME_COMPARE_GEOMETRY(self->mem, self->frame)
+				&& (self->frame_ts + self->drop_same_frames > now_ts)
+				&& !memcmp(self->frame->data, mem->data, mem->used)
+			) {
+				self->frame_id = mem->id;
+				goto retry;
 			}
 		}
 
-		drop:
+		// New frame found
+		Py_BLOCK_THREADS
+		return 0;
 
+	os_error:
+		Py_BLOCK_THREADS
+		PyErr_SetFromErrno(PyExc_OSError);
+		return -1;
+
+	retry:
+		if (locked >= 0 && flock(self->fd, LOCK_UN) < 0) {
+			goto os_error;
+		}
 		if (usleep(1000) < 0) {
-			RETURN_OS_ERROR;
+			goto os_error;
 		}
-
 		Py_END_ALLOW_THREADS
-
 		if (PyErr_CheckSignals() < 0) {
 			return -1;
 		}
-	} while (now < deadline_ts);
-
-#	undef RETURN_OS_ERROR
 
+	} while (now_ts < deadline_ts);
 	return -2;
 }
 
@@ -199,13 +189,13 @@ static PyObject *_MemsinkObject_wait_frame(_MemsinkObject *self, PyObject *args,
 		default: return NULL;
 	}
 
-	us_frame_set_data(self->frame, _MEM(data), _MEM(used));
+	us_memsink_shared_s *mem = self->mem;
+	us_frame_set_data(self->frame, mem->data, mem->used);
 	US_FRAME_COPY_META(self->mem, self->frame);
-	self->frame_id = _MEM(id);
+	self->frame_id = mem->id;
 	self->frame_ts = us_get_now_monotonic();
-	_MEM(last_client_ts) = self->frame_ts;
 	if (key_required) {
-		_MEM(key_requested) = true;
+		mem->key_requested = true;
 	}
 
 	if (flock(self->fd, LOCK_UN) < 0) {
@@ -217,18 +207,18 @@ static PyObject *_MemsinkObject_wait_frame(_MemsinkObject *self, PyObject *args,
 		return NULL;
 	}
 
-#	define SET_VALUE(_key, _maker) { \
-			PyObject *_tmp = _maker; \
-			if (_tmp == NULL) { \
+#	define SET_VALUE(x_key, x_maker) { \
+			PyObject *m_tmp = x_maker; \
+			if (m_tmp == NULL) { \
 				return NULL; \
 			} \
-			if (PyDict_SetItemString(dict_frame, _key, _tmp) < 0) { \
-				Py_DECREF(_tmp); \
+			if (PyDict_SetItemString(dict_frame, x_key, m_tmp) < 0) { \
+				Py_DECREF(m_tmp); \
 				return NULL; \
 			} \
-			Py_DECREF(_tmp); \
+			Py_DECREF(m_tmp); \
 		}
-#	define SET_NUMBER(_key, _from, _to) SET_VALUE(#_key, Py##_to##_From##_from(_FRAME(_key)))
+#	define SET_NUMBER(x_key, x_from, x_to) SET_VALUE(#x_key, Py##x_to##_From##x_from(self->frame->x_key))
 
 	SET_NUMBER(width, Long, Long);
 	SET_NUMBER(height, Long, Long);
@@ -236,10 +226,11 @@ static PyObject *_MemsinkObject_wait_frame(_MemsinkObject *self, PyObject *args,
 	SET_NUMBER(stride, Long, Long);
 	SET_NUMBER(online, Long, Bool);
 	SET_NUMBER(key, Long, Bool);
+	SET_NUMBER(gop, Long, Long);
 	SET_NUMBER(grab_ts, Double, Float);
 	SET_NUMBER(encode_begin_ts, Double, Float);
 	SET_NUMBER(encode_end_ts, Double, Float);
-	SET_VALUE("data", PyBytes_FromStringAndSize((const char *)_FRAME(data), _FRAME(used)));
+	SET_VALUE("data", PyBytes_FromStringAndSize((const char *)self->frame->data, self->frame->used));
 
 #	undef SET_NUMBER
 #	undef SET_VALUE
@@ -251,21 +242,19 @@ static PyObject *_MemsinkObject_is_opened(_MemsinkObject *self, PyObject *Py_UNU
 	return PyBool_FromLong(self->mem != NULL && self->fd > 0);
 }
 
-#define FIELD_GETTER(_field, _from, _to) \
-	static PyObject *_MemsinkObject_getter_##_field(_MemsinkObject *self, void *Py_UNUSED(closure)) { \
-		return Py##_to##_From##_from(self->_field); \
+#define FIELD_GETTER(x_field, x_from, x_to) \
+	static PyObject *_MemsinkObject_getter_##x_field(_MemsinkObject *self, void *Py_UNUSED(closure)) { \
+		return Py##x_to##_From##x_from(self->x_field); \
 	}
-
 FIELD_GETTER(obj, String, Unicode)
 FIELD_GETTER(lock_timeout, Double, Float)
 FIELD_GETTER(wait_timeout, Double, Float)
 FIELD_GETTER(drop_same_frames, Double, Float)
-
 #undef FIELD_GETTER
 
 static PyMethodDef _MemsinkObject_methods[] = {
-#	define ADD_METHOD(_name, _method, _flags) \
-		{.ml_name = _name, .ml_meth = (PyCFunction)_MemsinkObject_##_method, .ml_flags = (_flags)}
+#	define ADD_METHOD(x_name, x_method, x_flags) \
+		{.ml_name = x_name, .ml_meth = (PyCFunction)_MemsinkObject_##x_method, .ml_flags = (x_flags)}
 	ADD_METHOD("close", close, METH_NOARGS),
 	ADD_METHOD("__enter__", enter, METH_NOARGS),
 	ADD_METHOD("__exit__", exit, METH_VARARGS),
@@ -276,7 +265,7 @@ static PyMethodDef _MemsinkObject_methods[] = {
 };
 
 static PyGetSetDef _MemsinkObject_getsets[] = {
-#	define ADD_GETTER(_field) {.name = #_field, .get = (getter)_MemsinkObject_getter_##_field}
+#	define ADD_GETTER(x_field) {.name = #x_field, .get = (getter)_MemsinkObject_getter_##x_field}
 	ADD_GETTER(obj),
 	ADD_GETTER(lock_timeout),
 	ADD_GETTER(wait_timeout),
@@ -304,7 +293,7 @@ static PyModuleDef _Module = {
 	.m_size = -1,
 };
 
-PyMODINIT_FUNC PyInit_ustreamer(void) { // cppcheck-suppress unusedFunction
+PyMODINIT_FUNC PyInit_ustreamer(void) {
 	PyObject *module = PyModule_Create(&_Module);
 	if (module == NULL) {
 		return NULL;

src/Makefile

@@ -9,11 +9,12 @@ LDFLAGS ?=
 # =====
 _USTR = ustreamer.bin
 _DUMP = ustreamer-dump.bin
+_V4P = ustreamer-v4p.bin
 
 _CFLAGS = -MD -c -std=c17 -Wall -Wextra -D_GNU_SOURCE $(CFLAGS)
 _LDFLAGS = $(LDFLAGS)
 
-_COMMON_LIBS = -lm -ljpeg -pthread -lrt
+_COMMON_LIBS = -lm -ljpeg -pthread -lrt -latomic
 
 _USTR_LIBS = $(_COMMON_LIBS) -levent -levent_pthreads
 _USTR_SRCS = $(shell ls \
@@ -32,9 +33,19 @@ _DUMP_SRCS = $(shell ls \
 	dump/*.c \
 )
 
+_V4P_LIBS = $(_COMMON_LIBS)
+_V4P_SRCS = $(shell ls \
+	libs/*.c \
+	v4p/*.c \
+)
+
 _BUILD = build
 
 
+_TARGETS = $(_USTR) $(_DUMP)
+_OBJS = $(_USTR_SRCS:%.c=$(_BUILD)/%.o) $(_DUMP_SRCS:%.c=$(_BUILD)/%.o)
+
+
 define optbool
 $(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
 endef
@@ -42,7 +53,7 @@ endef
 
 ifneq ($(call optbool,$(WITH_GPIO)),)
 _USTR_LIBS += -lgpiod
-override _CFLAGS += -DWITH_GPIO
+override _CFLAGS += -DWITH_GPIO $(shell pkg-config --atleast-version=2 libgpiod 2> /dev/null && echo -DHAVE_GPIOD2)
 _USTR_SRCS += $(shell ls ustreamer/gpio/*.c)
 endif
 
@@ -69,40 +80,53 @@ override _CFLAGS += -DWITH_SETPROCTITLE
 endif
 
 
+WITH_V4P ?= 0
+ifneq ($(call optbool,$(WITH_V4P)),)
+override _TARGETS += $(_V4P)
+override _OBJS += $(_V4P_SRCS:%.c=$(_BUILD)/%.o)
+override _CFLAGS += $(shell pkg-config --cflags libdrm)
+_V4P_LDFLAGS = $(shell pkg-config --libs libdrm)
+endif
+
+
 # =====
-all: $(_USTR) $(_DUMP)
+all: $(_TARGETS)
 
 
 install: all
 	mkdir -p $(DESTDIR)$(PREFIX)/bin
-	install -m755 $(_USTR) $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_USTR))
-	install -m755 $(_DUMP) $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_DUMP))
+	for i in $(subst .bin,,$(_TARGETS)); do \
+		install -m755 $$i.bin $(DESTDIR)$(PREFIX)/bin/$$i; \
+	done
 
 
 install-strip: install
-	strip $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_USTR))
-	strip $(DESTDIR)$(PREFIX)/bin/$(subst .bin,,$(_DUMP))
+	for i in $(subst .bin,,$(_TARGETS)); do strip $(DESTDIR)$(PREFIX)/bin/$$i; done
 
 
 $(_USTR): $(_USTR_SRCS:%.c=$(_BUILD)/%.o)
 	$(info == LD $@)
-	@ $(CC) $^ -o $@ $(_LDFLAGS) $(_USTR_LIBS)
+	$(ECHO) $(CC) $^ -o $@ $(_LDFLAGS) $(_USTR_LIBS)
 
 
 $(_DUMP): $(_DUMP_SRCS:%.c=$(_BUILD)/%.o)
 	$(info == LD $@)
-	@ $(CC) $^ -o $@ $(_LDFLAGS) $(_DUMP_LIBS)
+	$(ECHO) $(CC) $^ -o $@ $(_LDFLAGS) $(_DUMP_LIBS)
+
+
+$(_V4P): $(_V4P_SRCS:%.c=$(_BUILD)/%.o)
+	$(info == LD $@)
+	$(ECHO) $(CC) $^ -o $@ $(_LDFLAGS) $(_V4P_LDFLAGS) $(_V4P_LIBS)
 
 
 $(_BUILD)/%.o: %.c
 	$(info -- CC $<)
-	@ mkdir -p $(dir $@) || true
-	@ $(CC) $< -o $@ $(_CFLAGS)
+	$(ECHO) mkdir -p $(dir $@) || true
+	$(ECHO) $(CC) $< -o $@ $(_CFLAGS)
 
 
 clean:
-	rm -rf $(_USTR) $(_DUMP) $(_BUILD)
+	rm -rf $(_USTR) $(_DUMP) $(_V4P) $(_BUILD)
 
 
-_OBJS = $(_USTR_SRCS:%.c=$(_BUILD)/%.o) $(_DUMP_SRCS:%.c=$(_BUILD)/%.o)
 -include $(_OBJS:%.o=%.d)

src/dump/file.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  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    #
@@ -52,11 +52,11 @@ void us_output_file_write(void *v_output, const us_frame_s *frame) {
 		us_base64_encode(frame->data, frame->used, &output->base64_data, &output->base64_allocated);
 		fprintf(output->fp,
 			"{\"size\": %zu, \"width\": %u, \"height\": %u,"
-			" \"format\": %u, \"stride\": %u, \"online\": %u, \"key\": %u,"
+			" \"format\": %u, \"stride\": %u, \"online\": %u, \"key\": %u, \"gop\": %u,"
 			" \"grab_ts\": %.3Lf, \"encode_begin_ts\": %.3Lf, \"encode_end_ts\": %.3Lf,"
 			" \"data\": \"%s\"}\n",
 			frame->used, frame->width, frame->height,
-			frame->format, frame->stride, frame->online, frame->key,
+			frame->format, frame->stride, frame->online, frame->key, frame->gop,
 			frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts,
 			output->base64_data);
 	} else {

src/dump/file.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/dump/main.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <unistd.h>
-#include <signal.h>
 #include <limits.h>
 #include <float.h>
 #include <getopt.h>
@@ -36,6 +35,7 @@
 #include "../libs/logging.h"
 #include "../libs/frame.h"
 #include "../libs/memsink.h"
+#include "../libs/signal.h"
 #include "../libs/options.h"
 
 #include "file.h"
@@ -95,7 +95,6 @@ typedef struct {
 
 
 static void _signal_handler(int signum);
-static void _install_signal_handlers(void);
 
 static int _dump_sink(
 	const char *sink_name, unsigned sink_timeout,
@@ -190,7 +189,7 @@ int main(int argc, char *argv[]) {
 		ctx.destroy = us_output_file_destroy;
 	}
 
-	_install_signal_handlers();
+	us_install_signals_handler(_signal_handler, false);
 	const int retval = abs(_dump_sink(sink_name, sink_timeout, count, interval, key_required, &ctx));
 	if (ctx.v_output && ctx.destroy) {
 		ctx.destroy(ctx.v_output);
@@ -206,31 +205,14 @@ static void _signal_handler(int signum) {
 	_g_stop = true;
 }
 
-static void _install_signal_handlers(void) {
-	struct sigaction sig_act = {0};
-
-	assert(!sigemptyset(&sig_act.sa_mask));
-	sig_act.sa_handler = _signal_handler;
-	assert(!sigaddset(&sig_act.sa_mask, SIGINT));
-	assert(!sigaddset(&sig_act.sa_mask, SIGTERM));
-	assert(!sigaddset(&sig_act.sa_mask, SIGPIPE));
-
-	US_LOG_DEBUG("Installing SIGINT handler ...");
-	assert(!sigaction(SIGINT, &sig_act, NULL));
-
-	US_LOG_DEBUG("Installing SIGTERM handler ...");
-	assert(!sigaction(SIGTERM, &sig_act, NULL));
-
-	US_LOG_DEBUG("Installing SIGTERM handler ...");
-	assert(!sigaction(SIGPIPE, &sig_act, NULL));
-}
-
 static int _dump_sink(
 	const char *sink_name, unsigned sink_timeout,
 	long long count, long double interval,
 	bool key_required,
 	_output_context_s *ctx) {
 
+	int retval = -1;
+
 	if (count == 0) {
 		count = -1;
 	}
@@ -260,16 +242,16 @@ static int _dump_sink(
 			const long long now_second = us_floor_ms(now);
 
 			char fourcc_str[8];
-			US_LOG_VERBOSE("Frame: res=%ux%u, fmt=%s, stride=%u, online=%d, key=%d, kr=%d, latency=%.3Lf, diff=%.3Lf, size=%zu",
-				frame->width, frame->height,
+			US_LOG_VERBOSE("Frame: %s - %ux%u -- online=%d, key=%d, kr=%d, gop=%u, latency=%.3Lf, backlog=%.3Lf, size=%zu",
 				us_fourcc_to_string(frame->format, fourcc_str, 8),
-				frame->stride, frame->online, frame->key, key_requested,
+				frame->width, frame->height,
+				frame->online, frame->key, key_requested, frame->gop,
 				now - frame->grab_ts, (last_ts ? now - last_ts : 0),
 				frame->used);
 			last_ts = now;
 
-			US_LOG_DEBUG("       grab_ts=%.3Lf, encode_begin_ts=%.3Lf, encode_end_ts=%.3Lf",
-				frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts);
+			US_LOG_DEBUG("       stride=%u, grab_ts=%.3Lf, encode_begin_ts=%.3Lf, encode_end_ts=%.3Lf",
+				frame->stride, frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts);
 
 			if (now_second != fps_second) {
 				fps = fps_accum;
@@ -300,18 +282,13 @@ static int _dump_sink(
 		}
 	}
 
-	int retval = 0;
-	goto ok;
+	retval = 0;
 
-	error:
-		retval = -1;
-
-	ok:
-		US_DELETE(sink, us_memsink_destroy);
-		us_frame_destroy(frame);
-
-		US_LOG_INFO("Bye-bye");
-		return retval;
+error:
+	US_DELETE(sink, us_memsink_destroy);
+	us_frame_destroy(frame);
+	US_LOG_INFO("Bye-bye");
+	return retval;
 }
 
 static void _help(FILE *fp) {
@@ -319,7 +296,7 @@ static void _help(FILE *fp) {
 	SAY("\nuStreamer-dump - Dump uStreamer's memory sink to file");
 	SAY("═════════════════════════════════════════════════════");
 	SAY("Version: %s; license: GPLv3", US_VERSION);
-	SAY("Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com>\n");
+	SAY("Copyright (C) 2018-2023 Maxim Devaev <mdevaev@gmail.com>\n");
 	SAY("Example:");
 	SAY("════════");
 	SAY("    ustreamer-dump --sink test --output - \\");

src/libs/array.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/libs/base64.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,13 @@
 
 #include "base64.h"
 
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "types.h"
+#include "tools.h"
+
 
 static const char _ENCODING_TABLE[] = {
 	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
@@ -34,11 +41,11 @@ static const char _ENCODING_TABLE[] = {
 	'4', '5', '6', '7', '8', '9', '+', '/',
 };
 
-static const unsigned _MOD_TABLE[] = {0, 2, 1};
+static const uint _MOD_TABLE[] = {0, 2, 1};
 
 
-void us_base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated) {
-	const size_t encoded_size = 4 * ((size + 2) / 3) + 1; // +1 for '\0'
+void us_base64_encode(const u8 *data, uz size, char **encoded, uz *allocated) {
+	const uz encoded_size = 4 * ((size + 2) / 3) + 1; // +1 for '\0'
 
 	if (*encoded == NULL || (allocated && *allocated < encoded_size)) {
 		US_REALLOC(*encoded, encoded_size);
@@ -47,14 +54,14 @@ void us_base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *
 		}
 	}
 
-	for (unsigned data_index = 0, encoded_index = 0; data_index < size;) {
-#		define OCTET(_name) unsigned _name = (data_index < size ? (uint8_t)data[data_index++] : 0)
+	for (uint data_index = 0, encoded_index = 0; data_index < size;) {
+#		define OCTET(_name) uint _name = (data_index < size ? (u8)data[data_index++] : 0)
 		OCTET(octet_a);
 		OCTET(octet_b);
 		OCTET(octet_c);
 #		undef OCTET
 
-		const unsigned triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
+		const uint triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
 
 #		define ENCODE(_offset) (*encoded)[encoded_index++] = _ENCODING_TABLE[(triple >> _offset * 6) & 0x3F]
 		ENCODE(3);
@@ -64,7 +71,7 @@ void us_base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *
 #		undef ENCODE
 	}
 
-	for (unsigned index = 0; index < _MOD_TABLE[size % 3]; index++) {
+	for (uint index = 0; index < _MOD_TABLE[size % 3]; index++) {
 		(*encoded)[encoded_size - 2 - index] = '=';
 	}
 

src/libs/base64.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,13 +22,7 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-
-#include <sys/types.h>
-
-#include "tools.h"
+#include "types.h"
 
 
-void us_base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated);
+void us_base64_encode(const u8 *data, uz size, char **encoded, uz *allocated);

src/libs/const.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,11 +22,14 @@
 
 #pragma once
 
-#define US_VERSION_MAJOR 5
-#define US_VERSION_MINOR 31
+#include "types.h"
+
+
+#define US_VERSION_MAJOR 6
+#define US_VERSION_MINOR 4
 
 #define US_MAKE_VERSION2(_major, _minor) #_major "." #_minor
 #define US_MAKE_VERSION1(_major, _minor) US_MAKE_VERSION2(_major, _minor)
 #define US_VERSION US_MAKE_VERSION1(US_VERSION_MAJOR, US_VERSION_MINOR)
 
-#define US_VERSION_U ((unsigned)(US_VERSION_MAJOR * 1000 + US_VERSION_MINOR))
+#define US_VERSION_U ((uint)(US_VERSION_MAJOR * 1000 + US_VERSION_MINOR))

src/libs/device.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,48 +22,24 @@
 
 #pragma once
 
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <string.h>
-#include <strings.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <assert.h>
+#include <stdatomic.h>
 
-#include <sys/select.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-
-#include <pthread.h>
 #include <linux/videodev2.h>
-#include <linux/v4l2-controls.h>
 
-#include "../libs/tools.h"
-#include "../libs/array.h"
-#include "../libs/logging.h"
-#include "../libs/threading.h"
-#include "../libs/frame.h"
-#include "../libs/xioctl.h"
+#include "types.h"
+#include "frame.h"
 
 
-#define US_VIDEO_MIN_WIDTH		((unsigned)160)
-#define US_VIDEO_MAX_WIDTH		((unsigned)10240)
+#define US_VIDEO_MIN_WIDTH		((uint)160)
+#define US_VIDEO_MAX_WIDTH		((uint)15360) // Remember about stream->run->http_capture_state;
 
-#define US_VIDEO_MIN_HEIGHT		((unsigned)120)
-#define US_VIDEO_MAX_HEIGHT		((unsigned)4320)
+#define US_VIDEO_MIN_HEIGHT		((uint)120)
+#define US_VIDEO_MAX_HEIGHT		((uint)8640)
 
-#define US_VIDEO_MAX_FPS		((unsigned)120)
+#define US_VIDEO_MAX_FPS		((uint)120)
 
-#define US_STANDARD_UNKNOWN		V4L2_STD_UNKNOWN
 #define US_STANDARDS_STR		"PAL, NTSC, SECAM"
-
-#define US_FORMAT_UNKNOWN		-1
-#define US_FORMATS_STR			"YUYV, UYVY, RGB565, RGB24, MJPEG, JPEG"
-
-#define US_IO_METHOD_UNKNOWN	-1
+#define US_FORMATS_STR			"YUYV, YVYU, UYVY, RGB565, RGB24, BGR24, MJPEG, JPEG"
 #define US_IO_METHODS_STR		"MMAP, USERPTR"
 
 
@@ -72,21 +48,26 @@ typedef struct {
 	struct v4l2_buffer	buf;
 	int					dma_fd;
 	bool				grabbed;
+	atomic_int			refs;
 } us_hw_buffer_s;
 
 typedef struct {
-	int				fd;
-	unsigned		width;
-	unsigned		height;
-	unsigned		format;
-	unsigned		stride;
-	unsigned		hw_fps;
-	unsigned		jpeg_quality;
-	size_t			raw_size;
-	unsigned		n_bufs;
-	us_hw_buffer_s	*hw_bufs;
-	bool			capturing;
-	bool			persistent_timeout_reported;
+	int					fd;
+	uint				width;
+	uint				height;
+	uint				format;
+	uint				stride;
+	float				hz;
+	uint				hw_fps;
+	uint				jpeg_quality;
+	uz					raw_size;
+	uint				n_bufs;
+	us_hw_buffer_s		*hw_bufs;
+	bool				dma;
+	enum v4l2_buf_type	capture_type;
+	bool				capture_mplane;
+	bool				streamon;
+	int					open_error_reported;
 } us_device_runtime_s;
 
 typedef enum {
@@ -119,22 +100,22 @@ typedef struct {
 
 typedef struct {
 	char				*path;
-	unsigned			input;
-	unsigned			width;
-	unsigned			height;
-	unsigned			format;
-	unsigned			jpeg_quality;
+	uint				input;
+	uint				width;
+	uint				height;
+	uint				format;
+	uint				jpeg_quality;
 	v4l2_std_id			standard;
 	enum v4l2_memory	io_method;
 	bool				dv_timings;
-	unsigned			n_bufs;
-	unsigned			desired_fps;
-	size_t				min_frame_size;
+	uint				n_bufs;
+	bool				dma_export;
+	bool				dma_required;
+	uint				desired_fps;
+	uz					min_frame_size;
 	bool				persistent;
-	unsigned			timeout;
-
+	uint				timeout;
 	us_controls_s 		ctl;
-
 	us_device_runtime_s *run;
 } us_device_s;
 
@@ -143,15 +124,14 @@ us_device_s *us_device_init(void);
 void us_device_destroy(us_device_s *dev);
 
 int us_device_parse_format(const char *str);
-v4l2_std_id us_device_parse_standard(const char *str);
+int us_device_parse_standard(const char *str);
 int us_device_parse_io_method(const char *str);
 
 int us_device_open(us_device_s *dev);
 void us_device_close(us_device_s *dev);
 
-int us_device_export_to_dma(us_device_s *dev);
-int us_device_switch_capturing(us_device_s *dev, bool enable);
-int us_device_select(us_device_s *dev, bool *has_read, bool *has_write, bool *has_error);
 int us_device_grab_buffer(us_device_s *dev, us_hw_buffer_s **hw);
 int us_device_release_buffer(us_device_s *dev, us_hw_buffer_s *hw);
-int us_device_consume_event(us_device_s *dev);
+
+void us_device_buffer_incref(us_hw_buffer_s *hw);
+void us_device_buffer_decref(us_hw_buffer_s *hw);

src/libs/frame.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,16 @@
 
 #include "frame.h"
 
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <linux/videodev2.h>
+
+#include "types.h"
+#include "tools.h"
+
 
 us_frame_s *us_frame_init(void) {
 	us_frame_s *frame;
@@ -36,21 +46,21 @@ void us_frame_destroy(us_frame_s *frame) {
 	free(frame);
 }
 
-void us_frame_realloc_data(us_frame_s *frame, size_t size) {
+void us_frame_realloc_data(us_frame_s *frame, uz size) {
 	if (frame->allocated < size) {
 		US_REALLOC(frame->data, size);
 		frame->allocated = size;
 	}
 }
 
-void us_frame_set_data(us_frame_s *frame, const uint8_t *data, size_t size) {
+void us_frame_set_data(us_frame_s *frame, const u8 *data, uz size) {
 	us_frame_realloc_data(frame, size);
 	memcpy(frame->data, data, size);
 	frame->used = size;
 }
 
-void us_frame_append_data(us_frame_s *frame, const uint8_t *data, size_t size) {
-	const size_t new_used = frame->used + size;
+void us_frame_append_data(us_frame_s *frame, const u8 *data, uz size) {
+	const uz new_used = frame->used + size;
 	us_frame_realloc_data(frame, new_used);
 	memcpy(frame->data + frame->used, data, size);
 	frame->used = new_used;
@@ -64,17 +74,19 @@ void us_frame_copy(const us_frame_s *src, us_frame_s *dest) {
 bool us_frame_compare(const us_frame_s *a, const us_frame_s *b) {
 	return (
 		a->allocated && b->allocated
-		&& US_FRAME_COMPARE_META_USED_NOTS(a, b)
+		&& US_FRAME_COMPARE_GEOMETRY(a, b)
 		&& !memcmp(a->data, b->data, b->used)
 	);
 }
 
-unsigned us_frame_get_padding(const us_frame_s *frame) {
-	unsigned bytes_per_pixel = 0;
+uint us_frame_get_padding(const us_frame_s *frame) {
+	uint bytes_per_pixel = 0;
 	switch (frame->format) {
 		case V4L2_PIX_FMT_YUYV:
+		case V4L2_PIX_FMT_YVYU:
 		case V4L2_PIX_FMT_UYVY:
 		case V4L2_PIX_FMT_RGB565: bytes_per_pixel = 2; break;
+		case V4L2_PIX_FMT_BGR24:
 		case V4L2_PIX_FMT_RGB24: bytes_per_pixel = 3; break;
 		// case V4L2_PIX_FMT_H264:
 		case V4L2_PIX_FMT_MJPEG:
@@ -87,13 +99,17 @@ unsigned us_frame_get_padding(const us_frame_s *frame) {
 	return 0;
 }
 
-const char *us_fourcc_to_string(unsigned format, char *buf, size_t size) {
+bool us_is_jpeg(uint format) {
+	return (format == V4L2_PIX_FMT_JPEG || format == V4L2_PIX_FMT_MJPEG);
+}
+
+const char *us_fourcc_to_string(uint format, char *buf, uz size) {
 	assert(size >= 8);
 	buf[0] = format & 0x7F;
 	buf[1] = (format >> 8) & 0x7F;
 	buf[2] = (format >> 16) & 0x7F;
 	buf[3] = (format >> 24) & 0x7F;
-	if (format & ((unsigned)1 << 31)) {
+	if (format & ((uint)1 << 31)) {
 		buf[4] = '-';
 		buf[5] = 'B';
 		buf[6] = 'E';

src/libs/frame.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,38 +22,30 @@
 
 #pragma once
 
-#include <stddef.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include <linux/videodev2.h>
-
+#include "types.h"
 #include "tools.h"
 
 
 typedef struct {
-	uint8_t		*data;
-	size_t		used;
-	size_t		allocated;
-	int			dma_fd;
+	u8		*data;
+	uz		used;
+	uz		allocated;
+	int		dma_fd;
 
-	unsigned	width;
-	unsigned	height;
-	unsigned	format;
-	unsigned	stride;
+	uint	width;
+	uint	height;
+	uint	format;
+	uint	stride;
 	// Stride is a bytesperline in V4L2
 	// https://www.kernel.org/doc/html/v4.14/media/uapi/v4l/pixfmt-v4l2.html
 	// https://medium.com/@oleg.shipitko/what-does-stride-mean-in-image-processing-bba158a72bcd
+	bool	online;
+	bool	key;
+	uint	gop;
 
-	bool		online;
-	bool		key;
-
-	long double	grab_ts;
-	long double	encode_begin_ts;
-	long double	encode_end_ts;
+	ldf		grab_ts;
+	ldf		encode_begin_ts;
+	ldf		encode_end_ts;
 } us_frame_s;
 
 
@@ -64,29 +56,30 @@ typedef struct {
 		x_dest->stride = x_src->stride; \
 		x_dest->online = x_src->online; \
 		x_dest->key = x_src->key; \
+		x_dest->gop = x_src->gop; \
+		\
 		x_dest->grab_ts = x_src->grab_ts; \
 		x_dest->encode_begin_ts = x_src->encode_begin_ts; \
 		x_dest->encode_end_ts = x_src->encode_end_ts; \
 	}
 
-static inline void us_frame_copy_meta(const us_frame_s *src, us_frame_s *dest) {
-	US_FRAME_COPY_META(src, dest);
-}
-
-#define US_FRAME_COMPARE_META_USED_NOTS(x_a, x_b) ( \
+#define US_FRAME_COMPARE_GEOMETRY(x_a, x_b) ( \
+		/* Compare the used size and significant meta (no timings) */ \
 		x_a->used == x_b->used \
+		\
 		&& x_a->width == x_b->width \
 		&& x_a->height == x_b->height \
 		&& x_a->format == x_b->format \
 		&& x_a->stride == x_b->stride \
 		&& x_a->online == x_b->online \
 		&& x_a->key == x_b->key \
+		&& x_a->gop == x_b->gop \
 	)
 
 
-static inline void us_frame_encoding_begin(const us_frame_s *src, us_frame_s *dest, unsigned format) {
+static inline void us_frame_encoding_begin(const us_frame_s *src, us_frame_s *dest, uint format) {
 	assert(src->used > 0);
-	us_frame_copy_meta(src, dest);
+	US_FRAME_COPY_META(src, dest);
 	dest->encode_begin_ts = us_get_now_monotonic();
 	dest->format = format;
 	dest->stride = 0;
@@ -102,17 +95,14 @@ static inline void us_frame_encoding_end(us_frame_s *dest) {
 us_frame_s *us_frame_init(void);
 void us_frame_destroy(us_frame_s *frame);
 
-void us_frame_realloc_data(us_frame_s *frame, size_t size);
-void us_frame_set_data(us_frame_s *frame, const uint8_t *data, size_t size);
-void us_frame_append_data(us_frame_s *frame, const uint8_t *data, size_t size);
+void us_frame_realloc_data(us_frame_s *frame, uz size);
+void us_frame_set_data(us_frame_s *frame, const u8 *data, uz size);
+void us_frame_append_data(us_frame_s *frame, const u8 *data, uz size);
 
 void us_frame_copy(const us_frame_s *src, us_frame_s *dest);
 bool us_frame_compare(const us_frame_s *a, const us_frame_s *b);
 
-unsigned us_frame_get_padding(const us_frame_s *frame);
+uint us_frame_get_padding(const us_frame_s *frame);
 
-const char *us_fourcc_to_string(unsigned format, char *buf, size_t size);
-
-static inline bool us_is_jpeg(unsigned format) {
-	return (format == V4L2_PIX_FMT_JPEG || format == V4L2_PIX_FMT_MJPEG);
-}
+bool us_is_jpeg(uint format);
+const char *us_fourcc_to_string(uint format, char *buf, uz size);

src/libs/frametext.c

@@ -0,0 +1,186 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "frametext.h"
+
+#include <string.h>
+
+#include <sys/types.h>
+
+#include <linux/videodev2.h>
+
+#include "tools.h"
+#include "frame.h"
+#include "frametext_font.h"
+
+
+static void _frametext_draw_line(
+	us_frametext_s *ft, const char *line,
+	uint scale_x, uint scale_y,
+	uint start_x, uint start_y);
+
+
+us_frametext_s *us_frametext_init(void) {
+	us_frametext_s *ft;
+	US_CALLOC(ft, 1);
+	ft->frame = us_frame_init();
+	return ft;
+}
+
+void us_frametext_destroy(us_frametext_s *ft) {
+	us_frame_destroy(ft->frame);
+	US_DELETE(ft->text, free);
+	free(ft);
+}
+
+/*
+Every character in the font is encoded row-wise in 8 bytes.
+The least significant bit of each byte corresponds to the first pixel in a row. 
+The character 'A' (0x41 / 65) is encoded as { 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}
+
+    0x0C => 0000 1100 => ..XX....
+    0X1E => 0001 1110 => .XXXX...
+    0x33 => 0011 0011 => XX..XX..
+    0x33 => 0011 0011 => XX..XX..
+    0x3F => 0011 1111 => xxxxxx..
+    0x33 => 0011 0011 => XX..XX..
+    0x33 => 0011 0011 => XX..XX..
+    0x00 => 0000 0000 => ........
+
+To access the nth pixel in a row, right-shift by n.
+
+                         . . X X . . . .
+                         | | | | | | | |
+    (0x0C >> 0) & 1 == 0-+ | | | | | | |
+    (0x0C >> 1) & 1 == 0---+ | | | | | |
+    (0x0C >> 2) & 1 == 1-----+ | | | | |
+    (0x0C >> 3) & 1 == 1-------+ | | | |
+    (0x0C >> 4) & 1 == 0---------+ | | |
+    (0x0C >> 5) & 1 == 0-----------+ | |
+    (0x0C >> 6) & 1 == 0-------------+ |
+    (0x0C >> 7) & 1 == 0---------------+
+*/
+
+void us_frametext_draw(us_frametext_s *ft, const char *text, uint width, uint height) {
+	assert(width > 0);
+	assert(height > 0);
+
+	us_frame_s *const frame = ft->frame;
+
+	if (
+		frame->width == width && frame->height == height
+		&& ft->text != NULL && !strcmp(ft->text, text)
+	) {
+		return;
+	}
+
+	US_DELETE(ft->text, free);
+	ft->text = us_strdup(text);
+	strcpy(ft->text, text);
+	frame->width = width;
+	frame->height = height;
+	frame->format = V4L2_PIX_FMT_RGB24;
+	frame->stride = width * 3;
+	frame->used = width * height * 3;
+	us_frame_realloc_data(frame, frame->used);
+	memset(frame->data, 0, frame->used);
+
+	if (frame->width == 0 || frame->height == 0) {
+		return;
+	}
+
+	char *str = us_strdup(text);
+	char *line;
+	char *rest;
+
+	uint block_width = 0;
+	uint block_height = 0;
+	while ((line = strtok_r((block_height == 0 ? str : NULL), "\n", &rest)) != NULL) {
+		block_width = US_MAX(strlen(line) * 8, block_width);
+		block_height += 8;
+	}
+	if (block_width == 0 || block_height == 0) {
+		goto empty;
+	}
+	uint scale_x = frame->width / block_width / 2;
+	uint scale_y = frame->height / block_height / 3;
+	if (scale_x < scale_y / 1.5) {
+		scale_y = scale_x * 1.5;
+	} else if (scale_y < scale_x * 1.5) {
+		scale_x = scale_y / 1.5;
+	}
+
+	strcpy(str, text);
+
+	const uint start_y = (frame->height >= (block_height * scale_y)
+		? ((frame->height - (block_height * scale_y)) / 2)
+		: 0);
+	uint n_line = 0;
+	while ((line = strtok_r((n_line == 0 ? str : NULL), "\n", &rest)) != NULL) {
+		const uint line_width = strlen(line) * 8 * scale_x;
+		const uint start_x = (frame->width >= line_width
+			? ((frame->width - line_width) / 2)
+			: 0);
+		_frametext_draw_line(ft, line, scale_x, scale_y, start_x, start_y + n_line * 8 * scale_y);
+		++n_line;
+	}
+
+empty:
+	free(str);
+}
+
+void _frametext_draw_line(
+	us_frametext_s *ft, const char *line,
+	uint scale_x, uint scale_y,
+	uint start_x, uint start_y) {
+
+	us_frame_s *const frame = ft->frame;
+
+	const size_t len = strlen(line);
+
+	for (uint ch_y = 0; ch_y < 8 * scale_y; ++ch_y) {
+		const uint canvas_y = start_y + ch_y;
+		for (uint ch_x = 0; ch_x < 8 * len * scale_x; ++ch_x) {
+			if ((start_x + ch_x) >= frame->width) {
+				break;
+			}
+			const uint canvas_x = (start_x + ch_x) * 3;
+			const uint offset = canvas_y * frame->stride + canvas_x;
+			if (offset >= frame->used) {
+				break;
+			}
+
+			const u8 ch = US_MIN((u8)line[ch_x / 8 / scale_x], sizeof(US_FRAMETEXT_FONT) / 8 - 1);
+			const uint ch_byte = (ch_y / scale_y) % 8;
+			const uint ch_bit = (ch_x / scale_x) % 8;
+			const bool pix_on = !!(US_FRAMETEXT_FONT[ch][ch_byte] & (1 << ch_bit));
+
+			u8 *const r = &frame->data[offset];
+			u8 *const g = r + 1;
+			u8 *const b = r + 2;
+
+			*r = pix_on * 0x65; // RGB/BGR-friendly
+			*g = pix_on * 0x65;
+			*b = pix_on * 0x65;
+		}
+	}
+}

src/libs/frametext.h

@@ -0,0 +1,39 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "types.h"
+#include "frame.h"
+
+
+typedef struct {
+	char		*text;
+	us_frame_s	*frame;
+} us_frametext_s;
+
+
+us_frametext_s *us_frametext_init(void);
+void us_frametext_destroy(us_frametext_s *ft);
+
+void us_frametext_draw(us_frametext_s *ft, const char *text, uint width, uint height);

src/libs/frametext_font.c

@@ -0,0 +1,160 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "frametext_font.h"
+
+#include "types.h"
+
+
+const u8 US_FRAMETEXT_FONT[128][8] = {
+	// https://github.com/dhepper/font8x8/blob/master/font8x8_basic.h
+	// Author: Daniel Hepper <daniel@hepper.net>
+	// License: Public Domain
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0000 (nul)
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0001
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0002
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0003
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0004
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0005
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0006
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0007
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0008
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0009
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000A
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000B
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000C
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000D
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000E
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000F
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0010
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0011
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0012
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0013
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0014
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0015
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0016
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0017
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0018
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0019
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001A
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001B
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001C
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001D
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001E
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001F
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0020 (space)
+	{0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00}, // U+0021 (!)
+	{0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0022 (")
+	{0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00}, // U+0023 (#)
+	{0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00}, // U+0024 ($)
+	{0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00}, // U+0025 (%)
+	{0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00}, // U+0026 (&)
+	{0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0027 (')
+	{0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00}, // U+0028 (()
+	{0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00}, // U+0029 ())
+	{0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00}, // U+002A (*)
+	{0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00}, // U+002B (+)
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+002C (,)
+	{0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00}, // U+002D (-)
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+002E (.)
+	{0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00}, // U+002F (/)
+	{0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0)
+	{0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1)
+	{0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2)
+	{0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3)
+	{0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4)
+	{0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5)
+	{0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6)
+	{0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7)
+	{0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+0038 (8)
+	{0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00}, // U+0039 (9)
+	{0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+003A (:)
+	{0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+003B (;)
+	{0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00}, // U+003C (<)
+	{0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00}, // U+003D (=)
+	{0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00}, // U+003E (>)
+	{0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00}, // U+003F (?)
+	{0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00}, // U+0040 (@)
+	{0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}, // U+0041 (A)
+	{0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00}, // U+0042 (B)
+	{0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00}, // U+0043 (C)
+	{0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00}, // U+0044 (D)
+	{0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00}, // U+0045 (E)
+	{0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00}, // U+0046 (F)
+	{0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00}, // U+0047 (G)
+	{0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00}, // U+0048 (H)
+	{0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0049 (I)
+	{0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00}, // U+004A (J)
+	{0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00}, // U+004B (K)
+	{0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00}, // U+004C (L)
+	{0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00}, // U+004D (M)
+	{0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00}, // U+004E (N)
+	{0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00}, // U+004F (O)
+	{0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00}, // U+0050 (P)
+	{0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00}, // U+0051 (Q)
+	{0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00}, // U+0052 (R)
+	{0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00}, // U+0053 (S)
+	{0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0054 (T)
+	{0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00}, // U+0055 (U)
+	{0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0056 (V)
+	{0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00}, // U+0057 (W)
+	{0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00}, // U+0058 (X)
+	{0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00}, // U+0059 (Y)
+	{0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00}, // U+005A (Z)
+	{0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00}, // U+005B ([)
+	{0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00}, // U+005C (\)
+	{0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00}, // U+005D (])
+	{0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00}, // U+005E (^)
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF}, // U+005F (_)
+	{0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0060 (`)
+	{0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00}, // U+0061 (a)
+	{0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00}, // U+0062 (b)
+	{0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00}, // U+0063 (c)
+	{0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00}, // U+0064 (d)
+	{0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00}, // U+0065 (e)
+	{0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00}, // U+0066 (f)
+	{0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0067 (g)
+	{0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00}, // U+0068 (h)
+	{0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0069 (i)
+	{0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E}, // U+006A (j)
+	{0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00}, // U+006B (k)
+	{0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+006C (l)
+	{0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00}, // U+006D (m)
+	{0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00}, // U+006E (n)
+	{0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+006F (o)
+	{0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F}, // U+0070 (p)
+	{0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78}, // U+0071 (q)
+	{0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00}, // U+0072 (r)
+	{0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00}, // U+0073 (s)
+	{0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00}, // U+0074 (t)
+	{0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00}, // U+0075 (u)
+	{0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0076 (v)
+	{0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00}, // U+0077 (w)
+	{0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00}, // U+0078 (x)
+	{0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0079 (y)
+	{0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00}, // U+007A (z)
+	{0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00}, // U+007B ({)
+	{0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, // U+007C (|)
+	{0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00}, // U+007D (})
+	{0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007E (~)
+	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007F
+};

src/libs/frametext_font.h

@@ -0,0 +1,28 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "types.h"
+
+
+extern const u8 US_FRAMETEXT_FONT[128][8];

src/libs/list.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/libs/logging.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,10 @@
 
 #include "logging.h"
 
+#include <stdbool.h>
+
+#include <pthread.h>
+
 
 enum us_log_level_t us_g_log_level;
 

src/libs/logging.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -23,7 +23,6 @@
 #pragma once
 
 #include <stdio.h>
-#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -33,6 +32,7 @@
 
 #include <pthread.h>
 
+#include "types.h"
 #include "tools.h"
 #include "threading.h"
 
@@ -91,7 +91,7 @@ extern pthread_mutex_t us_g_log_mutex;
 
 
 #define US_LOG_PRINTF_NOLOCK(x_label_color, x_label, x_msg_color, x_msg, ...) { \
-		char m_tname_buf[US_MAX_THREAD_NAME] = {0}; \
+		char m_tname_buf[US_THREAD_NAME_SIZE] = {0}; \
 		us_thread_get_name(m_tname_buf); \
 		if (us_g_log_colored) { \
 			fprintf(stderr, US_COLOR_GRAY "-- " x_label_color x_label US_COLOR_GRAY \

src/libs/memsink.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,10 +22,26 @@
 
 #include "memsink.h"
 
+#include <stdatomic.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include "types.h"
+#include "tools.h"
+#include "logging.h"
+#include "frame.h"
+#include "memsinksh.h"
+
 
 us_memsink_s *us_memsink_init(
 	const char *name, const char *obj, bool server,
-	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout) {
+	mode_t mode, bool rm, uint client_ttl, uint timeout) {
 
 	us_memsink_s *sink;
 	US_CALLOC(sink, 1);
@@ -58,12 +74,11 @@ us_memsink_s *us_memsink_init(
 		US_LOG_PERROR("%s-sink: Can't mmap shared memory", name);
 		goto error;
 	}
-
 	return sink;
 
-	error:
-		us_memsink_destroy(sink);
-		return NULL;
+error:
+	us_memsink_destroy(sink);
+	return NULL;
 }
 
 void us_memsink_destroy(us_memsink_s *sink) {
@@ -86,16 +101,35 @@ void us_memsink_destroy(us_memsink_s *sink) {
 }
 
 bool us_memsink_server_check(us_memsink_s *sink, const us_frame_s *frame) {
-	// Return true (the need to write to memsink) on any of these conditions:
-	//   - EWOULDBLOCK - we have an active client;
-	//   - Incorrect magic or version - need to first write;
-	//   - We have some active clients by last_client_ts;
-	//   - Frame meta differs (like size, format, but not timestamp).
+	// Если frame == NULL, то только проверяем наличие клиентов
+	// или необходимость инициализировать память.
 
 	assert(sink->server);
 
+	if (sink->mem->magic != US_MEMSINK_MAGIC || sink->mem->version != US_MEMSINK_VERSION) {
+		// Если регион памяти не был инициализирован, то нужно что-то туда положить.
+		// Блокировка не нужна, потому что только сервер пишет в эти переменные.
+		return true;
+	}
+
+	const ldf unsafe_ts = sink->mem->last_client_ts;
+	if (unsafe_ts != sink->unsafe_last_client_ts) {
+		// Клиент пишет в синке свою отметку last_client_ts при любом действии.
+		// Мы не берем блокировку здесь, а просто проверяем, является ли это число тем же самым,
+		// что было прочитано нами в предыдущих итерациях. Значению не нужно быть консистентным,
+		// и даже если мы прочитали мусор из-за гонки в памяти между чтением здеси и записью
+		// из клиента, мы все равно можем сделать вывод, есть ли у нас клиенты вообще.
+		// Если число число поменялось то у нас точно есть клиенты и дальнейшие проверки
+		// проводить не требуется. Если же число неизменно, то стоит поставить блокировку
+		// и проверить, нужно ли записать что-нибудь в память для инициализации фрейма.
+		sink->unsafe_last_client_ts = unsafe_ts;
+		atomic_store(&sink->has_clients, true);
+		return true;
+	}
+
 	if (flock(sink->fd, LOCK_EX | LOCK_NB) < 0) {
 		if (errno == EWOULDBLOCK) {
+			// Есть живой клиент, который прямо сейчас взял блокировку и читает фрейм из синка
 			atomic_store(&sink->has_clients, true);
 			return true;
 		}
@@ -103,10 +137,7 @@ bool us_memsink_server_check(us_memsink_s *sink, const us_frame_s *frame) {
 		return false;
 	}
 
-	if (sink->mem->magic != US_MEMSINK_MAGIC || sink->mem->version != US_MEMSINK_VERSION) {
-		return true;
-	}
-
+	// Проверяем, есть ли у нас живой клиент по таймауту
 	const bool has_clients = (sink->mem->last_client_ts + sink->client_ttl > us_get_now_monotonic());
 	atomic_store(&sink->has_clients, has_clients);
 
@@ -114,13 +145,20 @@ bool us_memsink_server_check(us_memsink_s *sink, const us_frame_s *frame) {
 		US_LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
 		return false;
 	}
-	return (has_clients || !US_FRAME_COMPARE_META_USED_NOTS(sink->mem, frame));;
+	if (has_clients) {
+		return true;
+	}
+	if (frame != NULL && !US_FRAME_COMPARE_GEOMETRY(sink->mem, frame)) {
+		// Если есть изменения в геометрии/формате фрейма, то их тоже нобходимо сразу записать в синк
+		return true;
+	}
+	return false;
 }
 
-int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *const key_requested) {
+int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *key_requested) {
 	assert(sink->server);
 
-	const long double now = us_get_now_monotonic();
+	const ldf now = us_get_now_monotonic();
 
 	if (frame->used > US_MEMSINK_MAX_DATA) {
 		US_LOG_ERROR("%s-sink: Can't put frame: is too big (%zu > %zu)",
@@ -131,12 +169,13 @@ int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *con
 	if (us_flock_timedwait_monotonic(sink->fd, 1) == 0) {
 		US_LOG_VERBOSE("%s-sink: >>>>> Exposing new frame ...", sink->name);
 
-		sink->last_id = us_get_now_id();
-		sink->mem->id = sink->last_id;
+		sink->mem->id = us_get_now_id();
 		if (sink->mem->key_requested && frame->key) {
 			sink->mem->key_requested = false;
 		}
-		*key_requested = sink->mem->key_requested;
+		if (key_requested != NULL) { // We don't need it for non-H264 sinks
+			*key_requested = sink->mem->key_requested;
+		}
 
 		memcpy(sink->mem->data, frame->data, frame->used);
 		sink->mem->used = frame->used;
@@ -164,7 +203,7 @@ int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *con
 	return 0;
 }
 
-int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *const key_requested, bool key_required) { // cppcheck-suppress unusedFunction
+int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *key_requested, bool key_required) {
 	assert(!sink->server); // Client only
 
 	if (us_flock_timedwait_monotonic(sink->fd, sink->timeout) < 0) {
@@ -175,31 +214,41 @@ int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *const key
 		return -1;
 	}
 
-	int retval = -2; // Not updated
-	if (sink->mem->magic == US_MEMSINK_MAGIC) {
-		if (sink->mem->version != US_MEMSINK_VERSION) {
-			US_LOG_ERROR("%s-sink: Protocol version mismatch: sink=%u, required=%u",
-				sink->name, sink->mem->version, US_MEMSINK_VERSION);
-			retval = -1;
-			goto done;
-		}
-		if (sink->mem->id != sink->last_id) { // When updated
-			sink->last_id = sink->mem->id;
-			us_frame_set_data(frame, sink->mem->data, sink->mem->used);
-			US_FRAME_COPY_META(sink->mem, frame);
-			*key_requested = sink->mem->key_requested;
-			retval = 0;
-		}
-		sink->mem->last_client_ts = us_get_now_monotonic();
-		if (key_required) {
-			sink->mem->key_requested = true;
-		}
+	int retval = 0;
+
+	if (sink->mem->magic != US_MEMSINK_MAGIC) {
+		retval = -2; // Not updated
+		goto done;
+	}
+	if (sink->mem->version != US_MEMSINK_VERSION) {
+		US_LOG_ERROR("%s-sink: Protocol version mismatch: sink=%u, required=%u",
+			sink->name, sink->mem->version, US_MEMSINK_VERSION);
+		retval = -1;
+		goto done;
 	}
 
-	done:
-		if (flock(sink->fd, LOCK_UN) < 0) {
-			US_LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
-			return -1;
-		}
-		return retval;
+	// Let the sink know that the client is alive
+	sink->mem->last_client_ts = us_get_now_monotonic();
+
+	if (sink->mem->id == sink->last_readed_id) {
+		retval = -2; // Not updated
+		goto done;
+	}
+
+	sink->last_readed_id = sink->mem->id;
+	us_frame_set_data(frame, sink->mem->data, sink->mem->used);
+	US_FRAME_COPY_META(sink->mem, frame);
+	if (key_requested != NULL) { // We don't need it for non-H264 sinks
+		*key_requested = sink->mem->key_requested;
+	}
+	if (key_required) {
+		sink->mem->key_requested = true;
+	}
+
+done:
+	if (flock(sink->fd, LOCK_UN) < 0) {
+		US_LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+		retval = -1;
+	}
+	return retval;
 }

src/libs/memsink.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,47 +22,40 @@
 
 #pragma once
 
-#include <stdint.h>
-#include <stdbool.h>
 #include <stdatomic.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <assert.h>
 
-#include <sys/types.h>
-#include <sys/file.h>
 #include <sys/stat.h>
-#include <sys/mman.h>
 
-#include "tools.h"
-#include "logging.h"
+#include "types.h"
 #include "frame.h"
 #include "memsinksh.h"
 
 
 typedef struct {
-	const char			*name;
-	const char			*obj;
-	bool				server;
-	bool				rm;
-	unsigned			client_ttl; // Only for server
-	unsigned			timeout;
+	const char	*name;
+	const char	*obj;
+	bool		server;
+	bool		rm;
+	uint		client_ttl; // Only for server
+	uint		timeout;
 
 	int					fd;
 	us_memsink_shared_s	*mem;
-	uint64_t			last_id;
-	atomic_bool			has_clients; // Only for server
+
+	u64			last_readed_id; // Only for client
+
+	atomic_bool	has_clients; // Only for server results
+	ldf			unsafe_last_client_ts; // Only for server
 } us_memsink_s;
 
 
 us_memsink_s *us_memsink_init(
 	const char *name, const char *obj, bool server,
-	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout);
+	mode_t mode, bool rm, uint client_ttl, uint timeout);
 
 void us_memsink_destroy(us_memsink_s *sink);
 
 bool us_memsink_server_check(us_memsink_s *sink, const us_frame_s *frame);
-int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *const key_requested);
+int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *key_requested);
 
-int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *const key_requested, bool key_required);
+int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *key_requested, bool key_required);

src/libs/memsinksh.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,44 +22,43 @@
 
 #pragma once
 
-#include <stdint.h>
-#include <stdbool.h>
-
-#include <sys/types.h>
 #include <sys/mman.h>
 
+#include "types.h"
 
-#define US_MEMSINK_MAGIC	((uint64_t)0xCAFEBABECAFEBABE)
-#define US_MEMSINK_VERSION	((uint32_t)3)
+
+#define US_MEMSINK_MAGIC	((u64)0xCAFEBABECAFEBABE)
+#define US_MEMSINK_VERSION	((u32)4)
 
 #ifndef US_CFG_MEMSINK_MAX_DATA
 #	define US_CFG_MEMSINK_MAX_DATA 33554432
 #endif
-#define US_MEMSINK_MAX_DATA ((size_t)(US_CFG_MEMSINK_MAX_DATA))
+#define US_MEMSINK_MAX_DATA ((uz)(US_CFG_MEMSINK_MAX_DATA))
 
 
 typedef struct {
-	uint64_t	magic;
-	uint32_t	version;
+	u64		magic;
+	u32		version;
 
-	uint64_t	id;
+	u64		id;
 
-	size_t		used;
-	unsigned	width;
-	unsigned	height;
-	unsigned	format;
-	unsigned	stride;
-	bool		online;
-	bool		key;
+	uz		used;
+	uint	width;
+	uint	height;
+	uint	format;
+	uint	stride;
+	bool	online;
+	bool	key;
+	uint	gop;
 
-	long double	grab_ts;
-	long double	encode_begin_ts;
-	long double	encode_end_ts;
+	ldf		grab_ts;
+	ldf		encode_begin_ts;
+	ldf		encode_end_ts;
 
-	long double	last_client_ts;
-	bool		key_requested;
+	ldf		last_client_ts;
+	bool	key_requested;
 
-	uint8_t		data[US_MEMSINK_MAX_DATA];
+	u8		data[US_MEMSINK_MAX_DATA];
 } us_memsink_shared_s;
 
 

src/libs/options.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,10 +22,17 @@
 
 #include "options.h"
 
+#include <string.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <assert.h>
 
-void us_build_short_options(const struct option opts[], char *short_opts, size_t size) {
+#include "types.h"
+
+
+void us_build_short_options(const struct option opts[], char *short_opts, uz size) {
 	memset(short_opts, 0, size);
-    for (unsigned short_index = 0, opt_index = 0; opts[opt_index].name != NULL; ++opt_index) {
+    for (uint short_index = 0, opt_index = 0; opts[opt_index].name != NULL; ++opt_index) {
 		assert(short_index < size - 3);
         if (isalpha(opts[opt_index].val)) {
             short_opts[short_index] = opts[opt_index].val;

src/libs/options.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,12 +22,9 @@
 
 #pragma once
 
-#include <string.h>
-#include <ctype.h>
 #include <getopt.h>
-#include <assert.h>
 
-#include <sys/types.h>
+#include "types.h"
 
 
-void us_build_short_options(const struct option opts[], char *short_opts, size_t size);
+void us_build_short_options(const struct option opts[], char *short_opts, uz size);

src/libs/process.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -25,8 +25,6 @@
 #include <signal.h>
 #include <unistd.h>
 
-#include <sys/types.h>
-
 
 #if defined(__linux__)
 #	define HAS_PDEATHSIG
@@ -58,6 +56,7 @@
 #		include <sys/procctl.h>
 #	endif
 #endif
+#include "types.h"
 #ifdef WITH_SETPROCTITLE
 #	include "tools.h"
 #endif
@@ -98,18 +97,18 @@ INLINE int us_process_track_parent_death(void) {
 #ifdef WITH_SETPROCTITLE
 #	pragma GCC diagnostic ignored "-Wunused-parameter"
 #	pragma GCC diagnostic push
-INLINE void us_process_set_name_prefix(int argc, char *argv[], const char *prefix) {
+INLINE void us_process_set_name_prefix(int argc, char *argv[], const char *prefix) { // cppcheck-suppress constParameter
 #	pragma GCC diagnostic pop
 
 	char *cmdline = NULL;
-	size_t allocated = 2048;
-	size_t used = 0;
+	uz allocated = 2048;
+	uz used = 0;
 
 	US_REALLOC(cmdline, allocated);
 	cmdline[0] = '\0';
 
 	for (int index = 0; index < argc; ++index) {
-		size_t arg_len = strlen(argv[index]);
+		uz arg_len = strlen(argv[index]);
 		if (used + arg_len + 16 >= allocated) {
 			allocated += arg_len + 2048;
 			US_REALLOC(cmdline, allocated); // cppcheck-suppress memleakOnRealloc // False-positive (ok with assert)

src/libs/queue.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,8 +22,18 @@
 
 #include "queue.h"
 
+#include <errno.h>
+#include <time.h>
+#include <assert.h>
 
-us_queue_s *us_queue_init(unsigned capacity) {
+#include <pthread.h>
+
+#include "types.h"
+#include "tools.h"
+#include "threading.h"
+
+
+us_queue_s *us_queue_init(uint capacity) {
 	us_queue_s *queue;
 	US_CALLOC(queue, 1);
 	US_CALLOC(queue->items, capacity);
@@ -61,7 +71,7 @@ void us_queue_destroy(us_queue_s *queue) {
 		} \
 	}
 
-int us_queue_put(us_queue_s *queue, void *item, long double timeout) {
+int us_queue_put(us_queue_s *queue, void *item, ldf timeout) {
 	US_MUTEX_LOCK(queue->mutex);
 	if (timeout == 0) {
 		if (queue->size == queue->capacity) {
@@ -80,7 +90,7 @@ int us_queue_put(us_queue_s *queue, void *item, long double timeout) {
 	return 0;
 }
 
-int us_queue_get(us_queue_s *queue, void **item, long double timeout) {
+int us_queue_get(us_queue_s *queue, void **item, ldf timeout) {
 	US_MUTEX_LOCK(queue->mutex);
 	_WAIT_OR_UNLOCK(queue->size == 0, queue->empty_cond);
 	*item = queue->items[queue->out];
@@ -94,9 +104,9 @@ int us_queue_get(us_queue_s *queue, void **item, long double timeout) {
 
 #undef _WAIT_OR_UNLOCK
 
-int us_queue_get_free(us_queue_s *queue) {
+bool us_queue_is_empty(us_queue_s *queue) {
 	US_MUTEX_LOCK(queue->mutex);
-	const unsigned size = queue->size;
+	const uint size = queue->size;
 	US_MUTEX_UNLOCK(queue->mutex);
-	return queue->capacity - size;
+	return (bool)(queue->capacity - size);
 }

src/libs/queue.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,24 +22,20 @@
 
 #pragma once
 
-#include <errno.h>
-#include <time.h>
-#include <assert.h>
-
 #include <pthread.h>
 
-#include "uslibs/tools.h"
-#include "uslibs/threading.h"
+#include "types.h"
+#include "tools.h"
 
 
 // Based on https://github.com/seifzadeh/c-pthread-queue/blob/master/queue.h
 
 typedef struct {
 	void			**items;
-	unsigned		size;
-	unsigned		capacity;
-	unsigned		in;
-	unsigned		out;
+	uint			size;
+	uint			capacity;
+	uint			in;
+	uint			out;
 
 	pthread_mutex_t	mutex;
 	pthread_cond_t	full_cond;
@@ -49,7 +45,7 @@ typedef struct {
 
 #define US_QUEUE_DELETE_WITH_ITEMS(x_queue, x_free_item) { \
 		if (x_queue) { \
-			while (!us_queue_get_free(x_queue)) { \
+			while (!us_queue_is_empty(x_queue)) { \
 				void *m_ptr; \
 				if (!us_queue_get(x_queue, &m_ptr, 0)) { \
 					US_DELETE(m_ptr, x_free_item); \
@@ -60,9 +56,9 @@ typedef struct {
 	}
 
 
-us_queue_s *us_queue_init(unsigned capacity);
+us_queue_s *us_queue_init(uint capacity);
 void us_queue_destroy(us_queue_s *queue);
 
-int us_queue_put(us_queue_s *queue, void *item, long double timeout);
-int us_queue_get(us_queue_s *queue, void **item, long double timeout);
-int us_queue_get_free(us_queue_s *queue);
+int us_queue_put(us_queue_s *queue, void *item, ldf timeout);
+int us_queue_get(us_queue_s *queue, void **item, ldf timeout);
+bool us_queue_is_empty(us_queue_s *queue);

src/libs/ring.c

@@ -0,0 +1,86 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 <assert.h>
+
+#include "ring.h"
+
+#include "types.h"
+#include "tools.h"
+#include "queue.h"
+
+
+int _acquire(us_ring_s *ring, us_queue_s *queue, ldf timeout);
+void _release(us_ring_s *ring, us_queue_s *queue, uint index);
+
+
+us_ring_s *us_ring_init(uint capacity) {
+	us_ring_s *ring;
+	US_CALLOC(ring, 1);
+	US_CALLOC(ring->items, capacity);
+	US_CALLOC(ring->places, capacity);
+	ring->capacity = capacity;
+	ring->producer = us_queue_init(capacity);
+	ring->consumer = us_queue_init(capacity);
+	for (uint index = 0; index < capacity; ++index) {
+		ring->places[index] = index; // XXX: Just to avoid casting between pointer and uint
+		assert(!us_queue_put(ring->producer, (void*)(ring->places + index), 0));
+	}
+	return ring;
+}
+
+void us_ring_destroy(us_ring_s *ring) {
+	us_queue_destroy(ring->consumer);
+	us_queue_destroy(ring->producer);
+	free(ring->places);
+	free(ring->items);
+	free(ring);
+}
+
+int us_ring_producer_acquire(us_ring_s *ring, ldf timeout) {
+	return _acquire(ring, ring->producer, timeout);
+}
+
+void us_ring_producer_release(us_ring_s *ring, uint index) {
+	_release(ring, ring->consumer, index);
+}
+
+int us_ring_consumer_acquire(us_ring_s *ring, ldf timeout) {
+	return _acquire(ring, ring->consumer, timeout);
+}
+
+void us_ring_consumer_release(us_ring_s *ring, uint index) {
+	_release(ring, ring->producer, index);
+}
+
+int _acquire(us_ring_s *ring, us_queue_s *queue, ldf timeout) {
+	(void)ring;
+	uint *place;
+	if (us_queue_get(queue, (void**)&place, timeout) < 0) {
+		return -1;
+	}
+	return *place;
+}
+
+void _release(us_ring_s *ring, us_queue_s *queue, uint index) {
+	assert(!us_queue_put(queue, (void*)(ring->places + index), 0));
+}

src/libs/ring.h

@@ -0,0 +1,63 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "types.h"
+#include "queue.h"
+
+
+typedef struct {
+	uz			capacity;
+	void		**items;
+	uint		*places;
+	us_queue_s	*producer;
+	us_queue_s	*consumer;
+} us_ring_s;
+
+
+#define US_RING_INIT_WITH_ITEMS(x_ring, x_capacity, x_init_item) { \
+		(x_ring) = us_ring_init(x_capacity); \
+		for (uz m_index = 0; m_index < (x_ring)->capacity; ++m_index) { \
+			(x_ring)->items[m_index] = x_init_item(); \
+		} \
+	}
+
+#define US_RING_DELETE_WITH_ITEMS(x_ring, x_destroy_item) { \
+		if (x_ring) { \
+			for (uz m_index = 0; m_index < (x_ring)->capacity; ++m_index) { \
+				x_destroy_item((x_ring)->items[m_index]); \
+			} \
+			us_ring_destroy(x_ring); \
+		} \
+	}
+
+
+us_ring_s *us_ring_init(uint capacity);
+void us_ring_destroy(us_ring_s *ring);
+
+int us_ring_producer_acquire(us_ring_s *ring, ldf timeout);
+void us_ring_producer_release(us_ring_s *ring, uint index);
+
+int us_ring_consumer_acquire(us_ring_s *ring, ldf timeout);
+void us_ring_consumer_release(us_ring_s *ring, uint index);

src/libs/signal.c

@@ -0,0 +1,82 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "signal.h"
+
+#include <string.h>
+#include <signal.h>
+#include <assert.h>
+
+#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 32
+#	define HAS_SIGABBREV_NP
+#endif
+
+#include "types.h"
+#include "tools.h"
+#include "logging.h"
+
+
+char *us_signum_to_string(int signum) {
+#	ifdef HAS_SIGABBREV_NP
+	const char *const name = sigabbrev_np(signum);
+#	else
+	const char *const name = (
+		signum == SIGTERM ? "TERM" :
+		signum == SIGINT ? "INT" :
+		signum == SIGPIPE ? "PIPE" :
+		NULL
+	);
+#	endif
+	char *buf;
+	if (name != NULL) {
+		US_ASPRINTF(buf, "SIG%s", name);
+	} else {
+		US_ASPRINTF(buf, "SIG[%d]", signum);
+	}
+	return buf;
+}
+
+void us_install_signals_handler(us_signal_handler_f handler, bool ignore_sigpipe) {
+	struct sigaction sig_act = {0};
+
+	assert(!sigemptyset(&sig_act.sa_mask));
+	sig_act.sa_handler = handler;
+	assert(!sigaddset(&sig_act.sa_mask, SIGINT));
+	assert(!sigaddset(&sig_act.sa_mask, SIGTERM));
+	if (!ignore_sigpipe) {
+	    assert(!sigaddset(&sig_act.sa_mask, SIGPIPE));
+	}
+
+	US_LOG_DEBUG("Installing SIGINT handler ...");
+	assert(!sigaction(SIGINT, &sig_act, NULL));
+
+	US_LOG_DEBUG("Installing SIGTERM handler ...");
+	assert(!sigaction(SIGTERM, &sig_act, NULL));
+
+	if (!ignore_sigpipe) {
+		US_LOG_DEBUG("Installing SIGPIPE handler ...");
+		assert(!sigaction(SIGPIPE, &sig_act, NULL));
+	} else {
+		US_LOG_DEBUG("Ignoring SIGPIPE ...");
+		assert(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
+	}
+}

src/libs/signal.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,13 +22,11 @@
 
 #pragma once
 
-#include <stdint.h>
-
-#include <sys/types.h>
+#include "types.h"
 
 
-extern const unsigned US_BLANK_JPEG_WIDTH;
-extern const unsigned US_BLANK_JPEG_HEIGHT;
+typedef void (*us_signal_handler_f)(int);
 
-extern const size_t US_BLANK_JPEG_DATA_SIZE;
-extern const uint8_t US_BLANK_JPEG_DATA[];
+
+char *us_signum_to_string(int signum);
+void us_install_signals_handler(us_signal_handler_f handler, bool ignore_sigpipe);

src/libs/tc358743.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,16 @@
 
 #include "tc358743.h"
 
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <linux/videodev2.h>
+#include <linux/v4l2-controls.h>
+
+#include "types.h"
+#include "tools.h"
+#include "xioctl.h"
+
 
 #ifndef V4L2_CID_USER_TC358743_BASE
 #	define V4L2_CID_USER_TC358743_BASE (V4L2_CID_USER_BASE + 0x1080)
@@ -34,31 +44,22 @@
 #endif
 
 
-int us_tc358743_read_info(const char *path, us_tc358743_info_s *info) {
-	US_MEMSET_ZERO(*info);
+int us_tc358743_xioctl_get_audio_hz(int fd, uint *audio_hz) {
+	*audio_hz = 0;
 
-	int fd = -1;
-	if ((fd = open(path, O_RDWR)) < 0) {
-		US_JLOG_PERROR("audio", "Can't open TC358743 V4L2 device");
+	struct v4l2_control ctl = {.id = TC358743_CID_AUDIO_PRESENT};
+	if (us_xioctl(fd, VIDIOC_G_CTRL, &ctl) < 0) {
 		return -1;
 	}
+	if (!ctl.value) {
+		return 0; // No audio
+	}
 
-#	define READ_CID(x_cid, x_field) { \
-			struct v4l2_control m_ctl = {0}; \
-			m_ctl.id = x_cid; \
-			if (us_xioctl(fd, VIDIOC_G_CTRL, &m_ctl) < 0) { \
-				US_JLOG_PERROR("audio", "Can't get value of " #x_cid); \
-				close(fd); \
-				return -1; \
-			} \
-			info->x_field = m_ctl.value; \
-		}
-
-	READ_CID(TC358743_CID_AUDIO_PRESENT,		has_audio);
-	READ_CID(TC358743_CID_AUDIO_SAMPLING_RATE,	audio_hz);
-
-#	undef READ_CID
-
-	close(fd);
+	US_MEMSET_ZERO(ctl);
+	ctl.id = TC358743_CID_AUDIO_SAMPLING_RATE;
+	if (us_xioctl(fd, VIDIOC_G_CTRL, &ctl) < 0) {
+		return -2;
+	}
+	*audio_hz = ctl.value;
 	return 0;
 }

src/libs/tc358743.h

@@ -0,0 +1,28 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  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 "types.h"
+
+
+int us_tc358743_xioctl_get_audio_hz(int fd, uint *audio_hz);

src/libs/threading.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -24,9 +24,9 @@
 
 #include <stdio.h>
 #include <unistd.h>
+#include <signal.h>
 #include <assert.h>
 
-#include <sys/types.h>
 #include <sys/syscall.h>
 
 #include <pthread.h>
@@ -37,13 +37,14 @@
 #	endif
 #endif
 
+#include "types.h"
 #include "tools.h"
 
 
 #ifdef PTHREAD_MAX_NAMELEN_NP
-#	define US_MAX_THREAD_NAME ((size_t)(PTHREAD_MAX_NAMELEN_NP))
+#	define US_THREAD_NAME_SIZE ((uz)(PTHREAD_MAX_NAMELEN_NP))
 #else
-#	define US_MAX_THREAD_NAME ((size_t)16)
+#	define US_THREAD_NAME_SIZE ((uz)16)
 #endif
 
 #define US_THREAD_CREATE(x_tid, x_func, x_arg)	assert(!pthread_create(&(x_tid), NULL, (x_func), (x_arg)))
@@ -51,14 +52,19 @@
 
 #ifdef WITH_PTHREAD_NP
 #	define US_THREAD_RENAME(x_fmt, ...) { \
-			char m_new_tname_buf[US_MAX_THREAD_NAME] = {0}; \
-			assert(snprintf(m_new_tname_buf, US_MAX_THREAD_NAME, (x_fmt), ##__VA_ARGS__) > 0); \
+			char m_new_tname_buf[US_THREAD_NAME_SIZE] = {0}; \
+			US_SNPRINTF(m_new_tname_buf, (US_THREAD_NAME_SIZE - 1), (x_fmt), ##__VA_ARGS__); \
 			us_thread_set_name(m_new_tname_buf); \
 		}
 #else
-#	define US_THREAD_RENAME(_fmt, ...)
+#	define US_THREAD_RENAME(x_fmt, ...)
 #endif
 
+#define US_THREAD_SETTLE(x_fmt, ...) { \
+		US_THREAD_RENAME((x_fmt), ##__VA_ARGS__); \
+		us_thread_block_signals(); \
+	}
+
 #define US_MUTEX_INIT(x_mutex)		assert(!pthread_mutex_init(&(x_mutex), NULL))
 #define US_MUTEX_DESTROY(x_mutex)	assert(!pthread_mutex_destroy(&(x_mutex)))
 #define US_MUTEX_LOCK(x_mutex)		assert(!pthread_mutex_lock(&(x_mutex)))
@@ -89,12 +95,12 @@ INLINE void us_thread_get_name(char *name) { // Always required for logging
 #ifdef WITH_PTHREAD_NP
 	int retval = -1;
 #	if defined(__linux__) || defined (__NetBSD__)
-	retval = pthread_getname_np(pthread_self(), name, US_MAX_THREAD_NAME);
+	retval = pthread_getname_np(pthread_self(), name, US_THREAD_NAME_SIZE - 1);
 #	elif \
 		(defined(__FreeBSD__) && defined(__FreeBSD_version) && __FreeBSD_version >= 1103500) \
 		|| (defined(__OpenBSD__) && defined(OpenBSD) && OpenBSD >= 201905) \
 		|| defined(__DragonFly__)
-	pthread_get_name_np(pthread_self(), name, US_MAX_THREAD_NAME);
+	pthread_get_name_np(pthread_self(), name, US_THREAD_NAME_SIZE - 1);
 	if (name[0] != '\0') {
 		retval = 0;
 	}
@@ -118,9 +124,17 @@ INLINE void us_thread_get_name(char *name) { // Always required for logging
 		const pid_t tid = 0; // Makes cppcheck happy
 #	warning gettid() not implemented
 #endif
-		assert(snprintf(name, US_MAX_THREAD_NAME, "tid=%d", tid) > 0);
+		US_SNPRINTF(name, (US_THREAD_NAME_SIZE - 1), "tid=%d", tid);
 
 #ifdef WITH_PTHREAD_NP
 	}
 #endif
 }
+
+INLINE void us_thread_block_signals(void) {
+	sigset_t mask;
+	assert(!sigemptyset(&mask));
+	assert(!sigaddset(&mask, SIGINT));
+	assert(!sigaddset(&mask, SIGTERM));
+	assert(!pthread_sigmask(SIG_BLOCK, &mask, NULL));
+}

src/libs/tools.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -23,26 +23,19 @@
 #pragma once
 
 #include <stdio.h>
-#include <stdint.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <string.h>
 #include <unistd.h>
 #include <limits.h>
-#include <locale.h>
+#include <locale.h> // Make C locale for strerror_l()
 #include <errno.h>
 #include <math.h>
 #include <time.h>
 #include <assert.h>
 
-#include <sys/types.h>
 #include <sys/file.h>
 
-#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 32
-#	define HAS_SIGABBREV_NP
-#else
-#	include <signal.h>
-#endif
+#include "types.h"
 
 
 #ifdef NDEBUG
@@ -57,14 +50,35 @@
 #define RN "\r\n"
 
 #define INLINE inline __attribute__((always_inline))
-#define UNUSED __attribute__((unused))
 
 #define US_CALLOC(x_dest, x_nmemb)		assert(((x_dest) = calloc((x_nmemb), sizeof(*(x_dest)))) != NULL)
 #define US_REALLOC(x_dest, x_nmemb)		assert(((x_dest) = realloc((x_dest), (x_nmemb) * sizeof(*(x_dest)))) != NULL)
-#define US_DELETE(x_dest, x_free)		{ if (x_dest) { x_free(x_dest); } }
+#define US_DELETE(x_dest, x_free)		{ if (x_dest) { x_free(x_dest); x_dest = NULL; } }
+#define US_CLOSE_FD(x_dest)				{ if (x_dest >= 0) { close(x_dest); x_dest = -1; } }
 #define US_MEMSET_ZERO(x_obj)			memset(&(x_obj), 0, sizeof(x_obj))
 
-#define US_ASPRINTF(x_dest, x_fmt, ...) assert(asprintf(&(x_dest), (x_fmt), ##__VA_ARGS__) >= 0)
+#define US_SNPRINTF(x_dest, x_size, x_fmt, ...)	assert(snprintf((x_dest), (x_size), (x_fmt), ##__VA_ARGS__) > 0)
+#define US_ASPRINTF(x_dest, x_fmt, ...)			assert(asprintf(&(x_dest), (x_fmt), ##__VA_ARGS__) > 0)
+
+#define US_MIN(x_a, x_b) ({ \
+		__typeof__(x_a) m_a = (x_a); \
+		__typeof__(x_b) m_b = (x_b); \
+		(m_a < m_b ? m_a : m_b); \
+	})
+
+#define US_MAX(x_a, x_b) ({ \
+		__typeof__(x_a) m_a = (x_a); \
+		__typeof__(x_b) m_b = (x_b); \
+		(m_a > m_b ? m_a : m_b); \
+	})
+
+#define US_ONCE(...) { \
+		const int m_reported = __LINE__; \
+		if (m_reported != once) { \
+			__VA_ARGS__; \
+			once = m_reported; \
+		} \
+	}
 
 
 INLINE char *us_strdup(const char *str) {
@@ -77,23 +91,15 @@ INLINE const char *us_bool_to_string(bool flag) {
 	return (flag ? "true" : "false");
 }
 
-INLINE size_t us_align_size(size_t size, size_t to) {
+INLINE uz us_align_size(uz size, uz to) {
 	return ((size + (to - 1)) & ~(to - 1));
 }
 
-INLINE unsigned us_min_u(unsigned a, unsigned b) {
-	return (a < b ? a : b);
+INLINE sll us_floor_ms(ldf now) {
+	return (sll)now - (now < (sll)now); // floor()
 }
 
-INLINE unsigned us_max_u(unsigned a, unsigned b) {
-	return (a > b ? a : b);
-}
-
-INLINE long long us_floor_ms(long double now) {
-	return (long long)now - (now < (long long)now); // floor()
-}
-
-INLINE uint32_t us_triple_u32(uint32_t x) {
+INLINE u32 us_triple_u32(u32 x) {
 	// https://nullprogram.com/blog/2018/07/31/
 	x ^= x >> 17;
 	x *= UINT32_C(0xED5AD4BB);
@@ -117,48 +123,38 @@ INLINE void us_get_now(clockid_t clk_id, time_t *sec, long *msec) {
 	}
 }
 
-#if defined(CLOCK_MONOTONIC_RAW)
-#	define _X_CLOCK_MONOTONIC CLOCK_MONOTONIC_RAW
-#elif defined(CLOCK_MONOTONIC_FAST)
-#	define _X_CLOCK_MONOTONIC CLOCK_MONOTONIC_FAST
-#else
-#	define _X_CLOCK_MONOTONIC CLOCK_MONOTONIC
-#endif
-
-INLINE long double us_get_now_monotonic(void) {
+INLINE ldf us_get_now_monotonic(void) {
 	time_t sec;
 	long msec;
-	us_get_now(_X_CLOCK_MONOTONIC, &sec, &msec);
-	return (long double)sec + ((long double)msec) / 1000;
+	us_get_now(CLOCK_MONOTONIC, &sec, &msec);
+	return (ldf)sec + ((ldf)msec) / 1000;
 }
 
-INLINE uint64_t us_get_now_monotonic_u64(void) {
+INLINE u64 us_get_now_monotonic_u64(void) {
 	struct timespec ts;
-	assert(!clock_gettime(_X_CLOCK_MONOTONIC, &ts));
-	return (uint64_t)(ts.tv_nsec / 1000) + (uint64_t)ts.tv_sec * 1000000;
+	assert(!clock_gettime(CLOCK_MONOTONIC, &ts));
+	return (u64)(ts.tv_nsec / 1000) + (u64)ts.tv_sec * 1000000;
 }
 
-#undef _X_CLOCK_MONOTONIC
-
-INLINE uint64_t us_get_now_id(void) {
-	const uint64_t now = us_get_now_monotonic_u64();
-	return (uint64_t)us_triple_u32(now) | ((uint64_t)us_triple_u32(now + 12345) << 32);
+INLINE u64 us_get_now_id(void) {
+	const u64 now = us_get_now_monotonic_u64();
+	return (u64)us_triple_u32(now) | ((u64)us_triple_u32(now + 12345) << 32);
 }
 
-INLINE long double us_get_now_real(void) {
+INLINE ldf us_get_now_real(void) {
 	time_t sec;
 	long msec;
 	us_get_now(CLOCK_REALTIME, &sec, &msec);
-	return (long double)sec + ((long double)msec) / 1000;
+	return (ldf)sec + ((ldf)msec) / 1000;
 }
 
-INLINE unsigned us_get_cores_available(void) {
+INLINE uint us_get_cores_available(void) {
 	long cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
 	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
-	return us_max_u(us_min_u(cores_sysconf, 4), 1);
+	return US_MAX(US_MIN(cores_sysconf, 4), 1);
 }
 
-INLINE void us_ld_to_timespec(long double ld, struct timespec *ts) {
+INLINE void us_ld_to_timespec(ldf ld, struct timespec *ts) {
 	ts->tv_sec = (long)ld;
 	ts->tv_nsec = (ld - ts->tv_sec) * 1000000000L;
 	if (ts->tv_nsec > 999999999L) {
@@ -167,12 +163,12 @@ INLINE void us_ld_to_timespec(long double ld, struct timespec *ts) {
 	}
 }
 
-INLINE long double us_timespec_to_ld(const struct timespec *ts) {
-	return ts->tv_sec + ((long double)ts->tv_nsec) / 1000000000;
+INLINE ldf us_timespec_to_ld(const struct timespec *ts) {
+	return ts->tv_sec + ((ldf)ts->tv_nsec) / 1000000000;
 }
 
-INLINE int us_flock_timedwait_monotonic(int fd, long double timeout) {
-	const long double deadline_ts = us_get_now_monotonic() + timeout;
+INLINE int us_flock_timedwait_monotonic(int fd, ldf timeout) {
+	const ldf deadline_ts = us_get_now_monotonic() + timeout;
 	int retval = -1;
 
 	while (true) {
@@ -188,33 +184,26 @@ INLINE int us_flock_timedwait_monotonic(int fd, long double timeout) {
 }
 
 INLINE char *us_errno_to_string(int error) {
-	locale_t locale = newlocale(LC_MESSAGES_MASK, "C", NULL);
-	char *buf;
-	if (locale) {
-		buf = us_strdup(strerror_l(error, locale));
-		freelocale(locale);
-	} else {
-		buf = us_strdup("!!! newlocale() error !!!");
+#	if (_POSIX_C_SOURCE >= 200112L) && !defined(_GNU_SOURCE) // XSI
+	char buf[2048];
+	const uz max_len = sizeof(buf) - 1;
+	if (strerror_r(error, buf, max_len) != 0) {
+		US_SNPRINTF(buf, max_len, "Errno = %d", error);
 	}
-	return buf;
-}
+	return us_strdup(buf);
 
-INLINE char *us_signum_to_string(int signum) {
-#	ifdef HAS_SIGABBREV_NP
-	const char *const name = sigabbrev_np(signum);
-#	else
-	const char *const name = (
-		signum == SIGTERM ? "TERM" :
-		signum == SIGINT ? "INT" :
-		signum == SIGPIPE ? "PIPE" :
-		NULL
-	);
-#	endif
-	char *buf;
-	if (name != NULL) {
-		US_ASPRINTF(buf, "SIG%s", name);
-	} else {
-		US_ASPRINTF(buf, "SIG[%d]", signum);
+#	elif defined(__GLIBC__) && defined(_GNU_SOURCE) // GNU
+	char buf[2048];
+	const uz max_len = sizeof(buf) - 1;
+	return us_strdup(strerror_r(error, buf, max_len));
+
+#	else // BSD
+	locale_t locale = newlocale(LC_MESSAGES_MASK, "C", NULL);
+	if (locale) {
+		char *ptr = us_strdup(strerror_l(error, locale));
+		freelocale(locale);
+		return ptr;
 	}
-	return buf;
+	return us_strdup("!!! newlocale() error !!!");
+#	endif
 }

src/libs/types.h

@@ -0,0 +1,44 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+#pragma once
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+
+typedef long long sll;
+typedef ssize_t sz;
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+typedef unsigned uint;
+typedef unsigned long long ull;
+typedef size_t uz;
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef long double ldf;

src/libs/unjpeg.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,6 +22,17 @@
 
 #include "unjpeg.h"
 
+#include <stdio.h>
+#include <setjmp.h>
+#include <assert.h>
+
+#include <jpeglib.h>
+#include <linux/videodev2.h>
+
+#include "types.h"
+#include "logging.h"
+#include "frame.h"
+
 
 typedef struct {
 	struct jpeg_error_mgr	mgr; // Default manager
@@ -43,7 +54,7 @@ int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode) {
 
 	// https://stackoverflow.com/questions/19857766/error-handling-in-libjpeg
 	_jpeg_error_manager_s jpeg_error;
-	jpeg.err = jpeg_std_error((struct jpeg_error_mgr *)&jpeg_error);
+	jpeg.err = jpeg_std_error((struct jpeg_error_mgr*)&jpeg_error);
 	jpeg_error.mgr.error_exit = _jpeg_error_handler;
 	jpeg_error.frame = src;
 	if (setjmp(jpeg_error.jmp) < 0) {
@@ -57,12 +68,12 @@ int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode) {
 
 	jpeg_start_decompress(&jpeg);
 
-	us_frame_copy_meta(src, dest);
-	dest->format = V4L2_PIX_FMT_RGB24;
-	dest->width = jpeg.output_width;
-	dest->height = jpeg.output_height;
-	dest->stride = jpeg.output_width * jpeg.output_components; // Row stride
-	dest->used = 0;
+	US_FRAME_COPY_META(src, dest); // cppcheck-suppress redundantAssignment
+	dest->format = V4L2_PIX_FMT_RGB24; // cppcheck-suppress redundantAssignment
+	dest->width = jpeg.output_width; // cppcheck-suppress redundantAssignment
+	dest->height = jpeg.output_height; // cppcheck-suppress redundantAssignment
+	dest->stride = jpeg.output_width * jpeg.output_components; // cppcheck-suppress redundantAssignment
+	dest->used = 0; // cppcheck-suppress redundantAssignment
 
 	if (decode) {
 		JSAMPARRAY scanlines;
@@ -77,13 +88,13 @@ int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode) {
 		jpeg_finish_decompress(&jpeg);
 	}
 
-	done:
-		jpeg_destroy_decompress(&jpeg);
-		return retval;
+done:
+	jpeg_destroy_decompress(&jpeg);
+	return retval;
 }
 
 static void _jpeg_error_handler(j_common_ptr jpeg) {
-	_jpeg_error_manager_s *jpeg_error = (_jpeg_error_manager_s *)jpeg->err;
+	_jpeg_error_manager_s *jpeg_error = (_jpeg_error_manager_s*)jpeg->err;
 	char msg[JMSG_LENGTH_MAX];
 
 	(*jpeg_error->mgr.format_message)(jpeg, msg);

src/libs/unjpeg.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,18 +22,7 @@
 
 #pragma once
 
-#include <stdio.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <setjmp.h>
-#include <assert.h>
-
-#include <sys/types.h>
-
-#include <jpeglib.h>
-#include <linux/videodev2.h>
-
-#include "logging.h"
+#include "types.h"
 #include "frame.h"
 
 

src/libs/xioctl.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -26,11 +26,13 @@
 
 #include <sys/ioctl.h>
 
+#include "types.h"
+
 
 #ifndef US_CFG_XIOCTL_RETRIES
 #	define US_CFG_XIOCTL_RETRIES 4
 #endif
-#define _XIOCTL_RETRIES ((unsigned)(US_CFG_XIOCTL_RETRIES))
+#define _XIOCTL_RETRIES ((uint)(US_CFG_XIOCTL_RETRIES))
 
 
 INLINE int us_xioctl(int fd, int request, void *arg) {

src/ustreamer/blank.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,84 +22,31 @@
 
 #include "blank.h"
 
+#include "../libs/types.h"
+#include "../libs/tools.h"
+#include "../libs/frame.h"
+#include "../libs/frametext.h"
 
-static us_frame_s *_init_internal(void);
-static us_frame_s *_init_external(const char *path);
+#include "encoders/cpu/encoder.h"
 
 
-us_frame_s *us_blank_frame_init(const char *path) {
-	us_frame_s *blank = NULL;
-
-	if (path && path[0] != '\0') {
-		blank = _init_external(path);
-	}
-
-	if (blank != NULL) {
-		US_LOG_INFO("Using external blank placeholder: %s", path);
-	} else {
-		blank = _init_internal();
-		US_LOG_INFO("Using internal blank placeholder");
-	}
+us_blank_s *us_blank_init(void) {
+	us_blank_s *blank;
+	US_CALLOC(blank, 1);
+	blank->ft = us_frametext_init();
+	blank->raw = blank->ft->frame;
+	blank->jpeg = us_frame_init();
+	us_blank_draw(blank, "< NO SIGNAL >", 640, 480);
 	return blank;
 }
 
-static us_frame_s *_init_internal(void) {
-	us_frame_s *const blank = us_frame_init();
-	us_frame_set_data(blank, US_BLANK_JPEG_DATA, US_BLANK_JPEG_DATA_SIZE);
-	blank->width = US_BLANK_JPEG_WIDTH;
-	blank->height = US_BLANK_JPEG_HEIGHT;
-	blank->format = V4L2_PIX_FMT_JPEG;
-	return blank;
+void us_blank_draw(us_blank_s *blank, const char *text, uint width, uint height) {
+	us_frametext_draw(blank->ft, text, width, height);
+	us_cpu_encoder_compress(blank->raw, blank->jpeg, 95);
 }
 
-static us_frame_s *_init_external(const char *path) {
-	FILE *fp = NULL;
-
-	us_frame_s *blank = us_frame_init();
-	blank->format = V4L2_PIX_FMT_JPEG;
-
-	if ((fp = fopen(path, "rb")) == NULL) {
-		US_LOG_PERROR("Can't open blank placeholder '%s'", path);
-		goto error;
-	}
-
-#	define CHUNK_SIZE ((size_t)(100 * 1024))
-	while (true) {
-		if (blank->used + CHUNK_SIZE >= blank->allocated) {
-			us_frame_realloc_data(blank, blank->used + CHUNK_SIZE * 2);
-		}
-
-		const size_t readed = fread(blank->data + blank->used, 1, CHUNK_SIZE, fp);
-		blank->used += readed;
-
-		if (readed < CHUNK_SIZE) {
-			if (feof(fp)) {
-				break;
-			} else {
-				US_LOG_PERROR("Can't read blank placeholder");
-				goto error;
-			}
-		}
-	}
-#	undef CHUNK_SIZE
-
-	us_frame_s *const decoded = us_frame_init();
-	if (us_unjpeg(blank, decoded, false) < 0) {
-		us_frame_destroy(decoded);
-		goto error;
-	}
-	blank->width = decoded->width;
-	blank->height = decoded->height;
-	us_frame_destroy(decoded);
-
-	goto ok;
-
-	error:
-		us_frame_destroy(blank);
-		blank = NULL;
-
-	ok:
-		US_DELETE(fp, fclose);
-
-	return blank;
+void us_blank_destroy(us_blank_s *blank) {
+	us_frame_destroy(blank->jpeg);
+	us_frametext_destroy(blank->ft);
+	free(blank);
 }

src/ustreamer/blank.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -22,17 +22,19 @@
 
 #pragma once
 
-#include <stdio.h>
-#include <stdbool.h>
-
-#include <linux/videodev2.h>
-
-#include "../libs/tools.h"
-#include "../libs/logging.h"
+#include "../libs/types.h"
 #include "../libs/frame.h"
-#include "../libs/unjpeg.h"
-
-#include "data/blank_jpeg.h"
+#include "../libs/frametext.h"
 
 
-us_frame_s *us_blank_frame_init(const char *path);
+typedef struct {
+	us_frametext_s	*ft;
+	us_frame_s		*raw;
+	us_frame_s		*jpeg;
+} us_blank_s;
+
+
+us_blank_s *us_blank_init(void);
+void us_blank_destroy(us_blank_s *blank);
+
+void us_blank_draw(us_blank_s *blank, const char *text, uint width, uint height);

src/ustreamer/data/blank_jpeg.c

@@ -1,723 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
-#                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-#include "blank_jpeg.h"
-
-
-const unsigned US_BLANK_JPEG_WIDTH = 640;
-const unsigned US_BLANK_JPEG_HEIGHT = 480;
-
-const size_t US_BLANK_JPEG_DATA_SIZE = 13845;
-const uint8_t US_BLANK_JPEG_DATA[] = {
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-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD2, 0xAF, 0xFC, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
-	0xD3, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x07, 0xFF, 0xD4, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD7, 0xAF, 0xFC, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
-	0xD0, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x07, 0xFF, 0xD1, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD2, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD3, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD4, 0xAF, 0xFC, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
-	0xD5, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x07, 0xFF, 0xD6, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD7, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD0, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xD1, 0xAF, 0xFC, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF,
-	0xD2, 0xAF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x07, 0xFF, 0xD9,
-};

src/ustreamer/data/favicon_ico.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/ustreamer/data/favicon_ico.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/ustreamer/data/index_html.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/ustreamer/data/index_html.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #

src/ustreamer/device.c

@@ -1,900 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
-#                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
-#                                                                            #
-#    This program is free software: you can redistribute it and/or modify    #
-#    it under the terms of the GNU General Public License as published by    #
-#    the Free Software Foundation, either version 3 of the License, or       #
-#    (at your option) any later version.                                     #
-#                                                                            #
-#    This program is distributed in the hope that it will be useful,         #
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
-#    GNU General Public License for more details.                            #
-#                                                                            #
-#    You should have received a copy of the GNU General Public License       #
-#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
-#                                                                            #
-*****************************************************************************/
-
-
-#include "device.h"
-
-
-static const struct {
-	const char *name;
-	const v4l2_std_id standard;
-} _STANDARDS[] = {
-	{"UNKNOWN",	V4L2_STD_UNKNOWN},
-	{"PAL",		V4L2_STD_PAL},
-	{"NTSC",	V4L2_STD_NTSC},
-	{"SECAM",	V4L2_STD_SECAM},
-};
-
-static const struct {
-	const char *name; // cppcheck-suppress unusedStructMember
-	const unsigned format; // cppcheck-suppress unusedStructMember
-} _FORMATS[] = {
-	{"YUYV",	V4L2_PIX_FMT_YUYV},
-	{"UYVY",	V4L2_PIX_FMT_UYVY},
-	{"RGB565",	V4L2_PIX_FMT_RGB565},
-	{"RGB24",	V4L2_PIX_FMT_RGB24},
-	{"MJPEG",	V4L2_PIX_FMT_MJPEG},
-	{"JPEG",	V4L2_PIX_FMT_JPEG},
-};
-
-static const struct {
-	const char *name; // cppcheck-suppress unusedStructMember
-	const enum v4l2_memory io_method; // cppcheck-suppress unusedStructMember
-} _IO_METHODS[] = {
-	{"MMAP",	V4L2_MEMORY_MMAP},
-	{"USERPTR",	V4L2_MEMORY_USERPTR},
-};
-
-
-static int _device_open_check_cap(us_device_s *dev);
-static int _device_open_dv_timings(us_device_s *dev);
-static int _device_apply_dv_timings(us_device_s *dev);
-static int _device_open_format(us_device_s *dev, bool first);
-static void _device_open_hw_fps(us_device_s *dev);
-static void _device_open_jpeg_quality(us_device_s *dev);
-static int _device_open_io_method(us_device_s *dev);
-static int _device_open_io_method_mmap(us_device_s *dev);
-static int _device_open_io_method_userptr(us_device_s *dev);
-static int _device_open_queue_buffers(us_device_s *dev);
-static int _device_apply_resolution(us_device_s *dev, unsigned width, unsigned height);
-
-static void _device_apply_controls(us_device_s *dev);
-static int _device_query_control(
-	us_device_s *dev, struct v4l2_queryctrl *query,
-	const char *name, unsigned cid, bool quiet);
-static void _device_set_control(
-	us_device_s *dev, struct v4l2_queryctrl *query,
-	const char *name, unsigned cid, int value, bool quiet);
-
-static const char *_format_to_string_nullable(unsigned format);
-static const char *_format_to_string_supported(unsigned format);
-static const char *_standard_to_string(v4l2_std_id standard);
-static const char *_io_method_to_string_supported(enum v4l2_memory io_method);
-
-
-#define _RUN(x_next)	dev->run->x_next
-#define _D_XIOCTL(...)	us_xioctl(_RUN(fd), __VA_ARGS__)
-
-
-us_device_s *us_device_init(void) {
-	us_device_runtime_s *run;
-	US_CALLOC(run, 1);
-	run->fd = -1;
-
-	us_device_s *dev;
-	US_CALLOC(dev, 1);
-	dev->path = "/dev/video0";
-	dev->width = 640;
-	dev->height = 480;
-	dev->format = V4L2_PIX_FMT_YUYV;
-	dev->jpeg_quality = 80;
-	dev->standard = V4L2_STD_UNKNOWN;
-	dev->io_method = V4L2_MEMORY_MMAP;
-	dev->n_bufs = us_get_cores_available() + 1;
-	dev->min_frame_size = 128;
-	dev->timeout = 1;
-	dev->run = run;
-	return dev;
-}
-
-void us_device_destroy(us_device_s *dev) {
-	free(dev->run);
-	free(dev);
-}
-
-int us_device_parse_format(const char *str) {
-	US_ARRAY_ITERATE(_FORMATS, 0, item, {
-		if (!strcasecmp(item->name, str)) {
-			return item->format;
-		}
-	});
-	return US_FORMAT_UNKNOWN;
-}
-
-v4l2_std_id us_device_parse_standard(const char *str) {
-	US_ARRAY_ITERATE(_STANDARDS, 1, item, {
-		if (!strcasecmp(item->name, str)) {
-			return item->standard;
-		}
-	});
-	return US_STANDARD_UNKNOWN;
-}
-
-int us_device_parse_io_method(const char *str) {
-	US_ARRAY_ITERATE(_IO_METHODS, 0, item, {
-		if (!strcasecmp(item->name, str)) {
-			return item->io_method;
-		}
-	});
-	return US_IO_METHOD_UNKNOWN;
-}
-
-int us_device_open(us_device_s *dev) {
-	if ((_RUN(fd) = open(dev->path, O_RDWR|O_NONBLOCK)) < 0) {
-		US_LOG_PERROR("Can't open device");
-		goto error;
-	}
-	US_LOG_INFO("Device fd=%d opened", _RUN(fd));
-
-	if (_device_open_check_cap(dev) < 0) {
-		goto error;
-	}
-	if (_device_open_dv_timings(dev) < 0) {
-		goto error;
-	}
-	if (_device_open_format(dev, true) < 0) {
-		goto error;
-	}
-	_device_open_hw_fps(dev);
-	_device_open_jpeg_quality(dev);
-	if (_device_open_io_method(dev) < 0) {
-		goto error;
-	}
-	if (_device_open_queue_buffers(dev) < 0) {
-		goto error;
-	}
-	_device_apply_controls(dev);
-
-	US_LOG_DEBUG("Device fd=%d initialized", _RUN(fd));
-	return 0;
-
-	error:
-		us_device_close(dev);
-		return -1;
-}
-
-void us_device_close(us_device_s *dev) {
-	_RUN(persistent_timeout_reported) = false;
-
-	if (_RUN(hw_bufs) != NULL) {
-		US_LOG_DEBUG("Releasing device buffers ...");
-		for (unsigned index = 0; index < _RUN(n_bufs); ++index) {
-#			define HW(x_next) _RUN(hw_bufs)[index].x_next
-
-			if (HW(dma_fd) >= 0) {
-				close(HW(dma_fd));
-				HW(dma_fd) = -1;
-			}
-
-			if (dev->io_method == V4L2_MEMORY_MMAP) {
-				if (HW(raw.allocated) > 0 && HW(raw.data) != NULL) {
-					if (munmap(HW(raw.data), HW(raw.allocated)) < 0) {
-						US_LOG_PERROR("Can't unmap device buffer=%u", index);
-					}
-				}
-			} else { // V4L2_MEMORY_USERPTR
-				US_DELETE(HW(raw.data), free);
-			}
-
-#			undef HW
-		}
-		_RUN(n_bufs) = 0;
-		free(_RUN(hw_bufs));
-		_RUN(hw_bufs) = NULL;
-	}
-
-	if (_RUN(fd) >= 0) {
-		US_LOG_DEBUG("Closing device ...");
-		if (close(_RUN(fd)) < 0) {
-			US_LOG_PERROR("Can't close device fd=%d", _RUN(fd));
-		} else {
-			US_LOG_INFO("Device fd=%d closed", _RUN(fd));
-		}
-		_RUN(fd) = -1;
-	}
-}
-
-int us_device_export_to_dma(us_device_s *dev) {
-#	define DMA_FD		_RUN(hw_bufs[index].dma_fd)
-
-	for (unsigned index = 0; index < _RUN(n_bufs); ++index) {
-		struct v4l2_exportbuffer exp = {0};
-		exp.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		exp.index = index;
-
-		US_LOG_DEBUG("Exporting device buffer=%u to DMA ...", index);
-		if (_D_XIOCTL(VIDIOC_EXPBUF, &exp) < 0) {
-			US_LOG_PERROR("Can't export device buffer=%u to DMA", index);
-			goto error;
-		}
-		DMA_FD = exp.fd;
-	}
-
-	return 0;
-
-	error:
-		for (unsigned index = 0; index < _RUN(n_bufs); ++index) {
-			if (DMA_FD >= 0) {
-				close(DMA_FD);
-				DMA_FD = -1;
-			}
-		}
-		return -1;
-
-#	undef DMA_FD
-}
-
-int us_device_switch_capturing(us_device_s *dev, bool enable) {
-	if (enable != _RUN(capturing)) {
-		enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-		US_LOG_DEBUG("%s device capturing ...", (enable ? "Starting" : "Stopping"));
-		if (_D_XIOCTL((enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
-			US_LOG_PERROR("Can't %s capturing", (enable ? "start" : "stop"));
-			if (enable) {
-				return -1;
-			}
-		}
-
-		_RUN(capturing) = enable;
-		US_LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
-	}
-	return 0;
-}
-
-int us_device_select(us_device_s *dev, bool *has_read, bool *has_write, bool *has_error) {
-	int retval;
-
-#	define INIT_FD_SET(x_set) \
-		fd_set x_set; FD_ZERO(&x_set); FD_SET(_RUN(fd), &x_set);
-
-	INIT_FD_SET(read_fds);
-	INIT_FD_SET(write_fds);
-	INIT_FD_SET(error_fds);
-
-#	undef INIT_FD_SET
-
-	struct timeval timeout;
-	timeout.tv_sec = dev->timeout;
-	timeout.tv_usec = 0;
-
-	US_LOG_DEBUG("Calling select() on video device ...");
-
-	retval = select(_RUN(fd) + 1, &read_fds, &write_fds, &error_fds, &timeout);
-	if (retval > 0) {
-		*has_read = FD_ISSET(_RUN(fd), &read_fds);
-		*has_write = FD_ISSET(_RUN(fd), &write_fds);
-		*has_error = FD_ISSET(_RUN(fd), &error_fds);
-	} else {
-		*has_read = false;
-		*has_write = false;
-		*has_error = false;
-	}
-	US_LOG_DEBUG("Device select() --> %d", retval);
-
-	if (retval > 0) {
-		_RUN(persistent_timeout_reported) = false;
-	} else if (retval == 0) {
-		if (dev->persistent) {
-			if (!_RUN(persistent_timeout_reported)) {
-				US_LOG_ERROR("Persistent device timeout (unplugged)");
-				_RUN(persistent_timeout_reported) = true;
-			}
-		} else {
-			// Если устройство не персистентное, то таймаут является ошибкой
-			retval = -1;
-		}
-	}
-	return retval;
-}
-
-int us_device_grab_buffer(us_device_s *dev, us_hw_buffer_s **hw) {
-	*hw = NULL;
-
-	struct v4l2_buffer buf = {0};
-	buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	buf.memory = dev->io_method;
-
-	US_LOG_DEBUG("Grabbing device buffer ...");
-	if (_D_XIOCTL(VIDIOC_DQBUF, &buf) < 0) {
-		US_LOG_PERROR("Can't grab device buffer");
-		return -1;
-	}
-
-	US_LOG_DEBUG("Grabbed new frame: buffer=%u, bytesused=%u", buf.index, buf.bytesused);
-
-	if (buf.index >= _RUN(n_bufs)) {
-		US_LOG_ERROR("V4L2 error: grabbed invalid device buffer=%u, n_bufs=%u", buf.index, _RUN(n_bufs));
-		return -1;
-	}
-
-	// Workaround for broken, corrupted frames:
-	// Under low light conditions corrupted frames may get captured.
-	// The good thing is such frames are quite small compared to the regular frames.
-	// For example a VGA (640x480) webcam frame is normally >= 8kByte large,
-	// corrupted frames are smaller.
-	if (buf.bytesused < dev->min_frame_size) {
-		US_LOG_DEBUG("Dropped too small frame, assuming it was broken: buffer=%u, bytesused=%u",
-			buf.index, buf.bytesused);
-		US_LOG_DEBUG("Releasing device buffer=%u (broken frame) ...", buf.index);
-		if (_D_XIOCTL(VIDIOC_QBUF, &buf) < 0) {
-			US_LOG_PERROR("Can't release device buffer=%u (broken frame)", buf.index);
-			return -1;
-		}
-		return -2;
-	}
-
-#	define HW(x_next) _RUN(hw_bufs)[buf.index].x_next
-
-	if (HW(grabbed)) {
-		US_LOG_ERROR("V4L2 error: grabbed device buffer=%u is already used", buf.index);
-		return -1;
-	}
-	HW(grabbed) = true;
-
-	HW(raw.dma_fd) = HW(dma_fd);
-	HW(raw.used) = buf.bytesused;
-	HW(raw.width) = _RUN(width);
-	HW(raw.height) = _RUN(height);
-	HW(raw.format) = _RUN(format);
-	HW(raw.stride) = _RUN(stride);
-	HW(raw.online) = true;
-	memcpy(&HW(buf), &buf, sizeof(struct v4l2_buffer));
-	HW(raw.grab_ts) = us_get_now_monotonic();
-
-#	undef HW
-	*hw = &_RUN(hw_bufs[buf.index]);
-	return buf.index;
-}
-
-int us_device_release_buffer(us_device_s *dev, us_hw_buffer_s *hw) {
-	const unsigned index = hw->buf.index;
-	US_LOG_DEBUG("Releasing device buffer=%u ...", index);
-
-	if (_D_XIOCTL(VIDIOC_QBUF, &hw->buf) < 0) {
-		US_LOG_PERROR("Can't release device buffer=%u", index);
-		return -1;
-	}
-	hw->grabbed = false;
-	return 0;
-}
-
-int us_device_consume_event(us_device_s *dev) {
-	struct v4l2_event event;
-
-	US_LOG_DEBUG("Consuming V4L2 event ...");
-	if (_D_XIOCTL(VIDIOC_DQEVENT, &event) == 0) {
-		switch (event.type) {
-			case V4L2_EVENT_SOURCE_CHANGE:
-				US_LOG_INFO("Got V4L2_EVENT_SOURCE_CHANGE: source changed");
-				return -1;
-			case V4L2_EVENT_EOS:
-				US_LOG_INFO("Got V4L2_EVENT_EOS: end of stream (ignored)");
-				return 0;
-		}
-	} else {
-		US_LOG_PERROR("Got some V4L2 device event, but where is it? ");
-	}
-	return 0;
-}
-
-static int _device_open_check_cap(us_device_s *dev) {
-	struct v4l2_capability cap = {0};
-
-	US_LOG_DEBUG("Querying device capabilities ...");
-	if (_D_XIOCTL(VIDIOC_QUERYCAP, &cap) < 0) {
-		US_LOG_PERROR("Can't query device capabilities");
-		return -1;
-	}
-
-	if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
-		US_LOG_ERROR("Video capture is not supported by device");
-		return -1;
-	}
-
-	if (!(cap.capabilities & V4L2_CAP_STREAMING)) {
-		US_LOG_ERROR("Device doesn't support streaming IO");
-		return -1;
-	}
-
-	int input = dev->input; // Needs a pointer to int for ioctl()
-	US_LOG_INFO("Using input channel: %d", input);
-	if (_D_XIOCTL(VIDIOC_S_INPUT, &input) < 0) {
-		US_LOG_ERROR("Can't set input channel");
-		return -1;
-	}
-
-	if (dev->standard != V4L2_STD_UNKNOWN) {
-		US_LOG_INFO("Using TV standard: %s", _standard_to_string(dev->standard));
-		if (_D_XIOCTL(VIDIOC_S_STD, &dev->standard) < 0) {
-			US_LOG_ERROR("Can't set video standard");
-			return -1;
-		}
-	} else {
-		US_LOG_DEBUG("Using TV standard: DEFAULT");
-	}
-	return 0;
-}
-
-static int _device_open_dv_timings(us_device_s *dev) {
-	_device_apply_resolution(dev, dev->width, dev->height);
-	if (dev->dv_timings) {
-		US_LOG_DEBUG("Using DV-timings");
-
-		if (_device_apply_dv_timings(dev) < 0) {
-			return -1;
-		}
-
-		struct v4l2_event_subscription sub = {0};
-		sub.type = V4L2_EVENT_SOURCE_CHANGE;
-
-		US_LOG_DEBUG("Subscribing to DV-timings events ...")
-		if (_D_XIOCTL(VIDIOC_SUBSCRIBE_EVENT, &sub) < 0) {
-			US_LOG_PERROR("Can't subscribe to DV-timings events");
-			return -1;
-		}
-	}
-	return 0;
-}
-
-static int _device_apply_dv_timings(us_device_s *dev) {
-	struct v4l2_dv_timings dv = {0};
-
-	US_LOG_DEBUG("Calling us_xioctl(VIDIOC_QUERY_DV_TIMINGS) ...");
-	if (_D_XIOCTL(VIDIOC_QUERY_DV_TIMINGS, &dv) == 0) {
-		if (dv.type == V4L2_DV_BT_656_1120) {
-			// See v4l2_print_dv_timings() in the kernel
-			const unsigned htot = V4L2_DV_BT_FRAME_WIDTH(&dv.bt);
-			const unsigned vtot = V4L2_DV_BT_FRAME_HEIGHT(&dv.bt) / (dv.bt.interlaced ? 2 : 1);
-			const unsigned fps = ((htot * vtot) > 0 ? ((100 * (uint64_t)dv.bt.pixelclock)) / (htot * vtot) : 0);
-			US_LOG_INFO("Got new DV-timings: %ux%u%s%u.%02u, pixclk=%llu, vsync=%u, hsync=%u",
-				dv.bt.width, dv.bt.height, (dv.bt.interlaced ? "i" : "p"), fps / 100, fps % 100,
-				(unsigned long long)dv.bt.pixelclock, dv.bt.vsync, dv.bt.hsync); // See #11 about %llu
-		} else {
-			US_LOG_INFO("Got new DV-timings: %ux%u, pixclk=%llu, vsync=%u, hsync=%u",
-				dv.bt.width, dv.bt.height,
-				(unsigned long long)dv.bt.pixelclock, dv.bt.vsync, dv.bt.hsync);
-		}
-
-		US_LOG_DEBUG("Calling us_xioctl(VIDIOC_S_DV_TIMINGS) ...");
-		if (_D_XIOCTL(VIDIOC_S_DV_TIMINGS, &dv) < 0) {
-			US_LOG_PERROR("Failed to set DV-timings");
-			return -1;
-		}
-
-		if (_device_apply_resolution(dev, dv.bt.width, dv.bt.height) < 0) {
-			return -1;
-		}
-
-	} else {
-		US_LOG_DEBUG("Calling us_xioctl(VIDIOC_QUERYSTD) ...");
-		if (_D_XIOCTL(VIDIOC_QUERYSTD, &dev->standard) == 0) {
-			US_LOG_INFO("Applying the new VIDIOC_S_STD: %s ...", _standard_to_string(dev->standard));
-			if (_D_XIOCTL(VIDIOC_S_STD, &dev->standard) < 0) {
-				US_LOG_PERROR("Can't set video standard");
-				return -1;
-			}
-		}
-	}
-	return 0;
-}
-
-static int _device_open_format(us_device_s *dev, bool first) {
-	const unsigned stride = us_align_size(_RUN(width), 32) << 1;
-
-	struct v4l2_format fmt = {0};
-	fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	fmt.fmt.pix.width = _RUN(width);
-	fmt.fmt.pix.height = _RUN(height);
-	fmt.fmt.pix.pixelformat = dev->format;
-	fmt.fmt.pix.field = V4L2_FIELD_ANY;
-	fmt.fmt.pix.bytesperline = stride;
-
-	// Set format
-	US_LOG_DEBUG("Probing device format=%s, stride=%u, resolution=%ux%u ...",
-		_format_to_string_supported(dev->format), stride, _RUN(width), _RUN(height));
-	if (_D_XIOCTL(VIDIOC_S_FMT, &fmt) < 0) {
-		US_LOG_PERROR("Can't set device format");
-		return -1;
-	}
-
-	// Check resolution
-	bool retry = false;
-	if (fmt.fmt.pix.width != _RUN(width) || fmt.fmt.pix.height != _RUN(height)) {
-		US_LOG_ERROR("Requested resolution=%ux%u is unavailable", _RUN(width), _RUN(height));
-		retry = true;
-	}
-	if (_device_apply_resolution(dev, fmt.fmt.pix.width, fmt.fmt.pix.height) < 0) {
-		return -1;
-	}
-	if (first && retry) {
-		return _device_open_format(dev, false);
-	}
-	US_LOG_INFO("Using resolution: %ux%u", _RUN(width), _RUN(height));
-
-	// Check format
-	if (fmt.fmt.pix.pixelformat != dev->format) {
-		US_LOG_ERROR("Could not obtain the requested format=%s; driver gave us %s",
-			_format_to_string_supported(dev->format),
-			_format_to_string_supported(fmt.fmt.pix.pixelformat));
-
-		char *format_str;
-		if ((format_str = (char *)_format_to_string_nullable(fmt.fmt.pix.pixelformat)) != NULL) {
-			US_LOG_INFO("Falling back to format=%s", format_str);
-		} else {
-			char fourcc_str[8];
-			US_LOG_ERROR("Unsupported format=%s (fourcc)",
-				us_fourcc_to_string(fmt.fmt.pix.pixelformat, fourcc_str, 8));
-			return -1;
-		}
-	}
-
-	_RUN(format) = fmt.fmt.pix.pixelformat;
-	US_LOG_INFO("Using format: %s", _format_to_string_supported(_RUN(format)));
-
-	_RUN(stride) = fmt.fmt.pix.bytesperline;
-	_RUN(raw_size) = fmt.fmt.pix.sizeimage; // Only for userptr
-	return 0;
-}
-
-static void _device_open_hw_fps(us_device_s *dev) {
-	_RUN(hw_fps) = 0;
-
-	struct v4l2_streamparm setfps = {0};
-	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-	US_LOG_DEBUG("Querying HW FPS ...");
-	if (_D_XIOCTL(VIDIOC_G_PARM, &setfps) < 0) {
-		if (errno == ENOTTY) { // Quiet message for TC358743
-			US_LOG_INFO("Querying HW FPS changing is not supported");
-		} else {
-			US_LOG_PERROR("Can't query HW FPS changing");
-		}
-		return;
-	}
-
-	if (!(setfps.parm.capture.capability & V4L2_CAP_TIMEPERFRAME)) {
-		US_LOG_INFO("Changing HW FPS is not supported");
-		return;
-	}
-
-#	define SETFPS_TPF(x_next) setfps.parm.capture.timeperframe.x_next
-
-	US_MEMSET_ZERO(setfps);
-	setfps.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	SETFPS_TPF(numerator) = 1;
-	SETFPS_TPF(denominator) = (dev->desired_fps == 0 ? 255 : dev->desired_fps);
-
-	if (_D_XIOCTL(VIDIOC_S_PARM, &setfps) < 0) {
-		US_LOG_PERROR("Can't set HW FPS");
-		return;
-	}
-
-	if (SETFPS_TPF(numerator) != 1) {
-		US_LOG_ERROR("Invalid HW FPS numerator: %u != 1", SETFPS_TPF(numerator));
-		return;
-	}
-
-	if (SETFPS_TPF(denominator) == 0) { // Не знаю, бывает ли так, но пускай на всякий случай
-		US_LOG_ERROR("Invalid HW FPS denominator: 0");
-		return;
-	}
-
-	_RUN(hw_fps) = SETFPS_TPF(denominator);
-	if (dev->desired_fps != _RUN(hw_fps)) {
-		US_LOG_INFO("Using HW FPS: %u -> %u (coerced)", dev->desired_fps, _RUN(hw_fps));
-	} else {
-		US_LOG_INFO("Using HW FPS: %u", _RUN(hw_fps));
-	}
-
-#	undef SETFPS_TPF
-}
-
-static void _device_open_jpeg_quality(us_device_s *dev) {
-	unsigned quality = 0;
-
-	if (us_is_jpeg(_RUN(format))) {
-		struct v4l2_jpegcompression comp = {0};
-
-		if (_D_XIOCTL(VIDIOC_G_JPEGCOMP, &comp) < 0) {
-			US_LOG_ERROR("Device doesn't support setting of HW encoding quality parameters");
-		} else {
-			comp.quality = dev->jpeg_quality;
-			if (_D_XIOCTL(VIDIOC_S_JPEGCOMP, &comp) < 0) {
-				US_LOG_ERROR("Can't change MJPEG quality for JPEG source with HW pass-through encoder");
-			} else {
-				quality = dev->jpeg_quality;
-			}
-		}
-	}
-
-	_RUN(jpeg_quality) = quality;
-}
-
-static int _device_open_io_method(us_device_s *dev) {
-	US_LOG_INFO("Using IO method: %s", _io_method_to_string_supported(dev->io_method));
-	switch (dev->io_method) {
-		case V4L2_MEMORY_MMAP: return _device_open_io_method_mmap(dev);
-		case V4L2_MEMORY_USERPTR: return _device_open_io_method_userptr(dev);
-		default: assert(0 && "Unsupported IO method");
-	}
-	return -1;
-}
-
-static int _device_open_io_method_mmap(us_device_s *dev) {
-	struct v4l2_requestbuffers req = {0};
-	req.count = dev->n_bufs;
-	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	req.memory = V4L2_MEMORY_MMAP;
-
-	US_LOG_DEBUG("Requesting %u device buffers for MMAP ...", req.count);
-	if (_D_XIOCTL(VIDIOC_REQBUFS, &req) < 0) {
-		US_LOG_PERROR("Device '%s' doesn't support MMAP method", dev->path);
-		return -1;
-	}
-
-	if (req.count < 1) {
-		US_LOG_ERROR("Insufficient buffer memory: %u", req.count);
-		return -1;
-	} else {
-		US_LOG_INFO("Requested %u device buffers, got %u", dev->n_bufs, req.count);
-	}
-
-	US_LOG_DEBUG("Allocating device buffers ...");
-
-	US_CALLOC(_RUN(hw_bufs), req.count);
-	for (_RUN(n_bufs) = 0; _RUN(n_bufs) < req.count; ++_RUN(n_bufs)) {
-		struct v4l2_buffer buf = {0};
-		buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		buf.memory = V4L2_MEMORY_MMAP;
-		buf.index = _RUN(n_bufs);
-
-		US_LOG_DEBUG("Calling us_xioctl(VIDIOC_QUERYBUF) for device buffer=%u ...", _RUN(n_bufs));
-		if (_D_XIOCTL(VIDIOC_QUERYBUF, &buf) < 0) {
-			US_LOG_PERROR("Can't VIDIOC_QUERYBUF");
-			return -1;
-		}
-
-#		define HW(x_next) _RUN(hw_bufs)[_RUN(n_bufs)].x_next
-
-		HW(dma_fd) = -1;
-
-		US_LOG_DEBUG("Mapping device buffer=%u ...", _RUN(n_bufs));
-		if ((HW(raw.data) = mmap(
-			NULL,
-			buf.length,
-			PROT_READ | PROT_WRITE,
-			MAP_SHARED,
-			_RUN(fd),
-			buf.m.offset
-		)) == MAP_FAILED) {
-			US_LOG_PERROR("Can't map device buffer=%u", _RUN(n_bufs));
-			return -1;
-		}
-		assert(HW(raw.data) != NULL);
-		HW(raw.allocated) = buf.length;
-
-#		undef HW
-	}
-	return 0;
-}
-
-static int _device_open_io_method_userptr(us_device_s *dev) {
-	struct v4l2_requestbuffers req = {0};
-	req.count = dev->n_bufs;
-	req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	req.memory = V4L2_MEMORY_USERPTR;
-
-	US_LOG_DEBUG("Requesting %u device buffers for USERPTR ...", req.count);
-	if (_D_XIOCTL(VIDIOC_REQBUFS, &req) < 0) {
-		US_LOG_PERROR("Device '%s' doesn't support USERPTR method", dev->path);
-		return -1;
-	}
-
-	if (req.count < 1) {
-		US_LOG_ERROR("Insufficient buffer memory: %u", req.count);
-		return -1;
-	} else {
-		US_LOG_INFO("Requested %u device buffers, got %u", dev->n_bufs, req.count);
-	}
-
-	US_LOG_DEBUG("Allocating device buffers ...");
-
-	US_CALLOC(_RUN(hw_bufs), req.count);
-
-	const unsigned page_size = getpagesize();
-	const unsigned buf_size = us_align_size(_RUN(raw_size), page_size);
-
-	for (_RUN(n_bufs) = 0; _RUN(n_bufs) < req.count; ++_RUN(n_bufs)) {
-#       define HW(x_next) _RUN(hw_bufs)[_RUN(n_bufs)].x_next
-		assert((HW(raw.data) = aligned_alloc(page_size, buf_size)) != NULL);
-		memset(HW(raw.data), 0, buf_size);
-		HW(raw.allocated) = buf_size;
-#		undef HW
-	}
-	return 0;
-}
-
-static int _device_open_queue_buffers(us_device_s *dev) {
-	for (unsigned index = 0; index < _RUN(n_bufs); ++index) {
-		struct v4l2_buffer buf = {0};
-		buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-		buf.memory = dev->io_method;
-		buf.index = index;
-		if (dev->io_method == V4L2_MEMORY_USERPTR) {
-			buf.m.userptr = (unsigned long)_RUN(hw_bufs)[index].raw.data;
-			buf.length = _RUN(hw_bufs)[index].raw.allocated;
-		}
-
-		US_LOG_DEBUG("Calling us_xioctl(VIDIOC_QBUF) for buffer=%u ...", index);
-		if (_D_XIOCTL(VIDIOC_QBUF, &buf) < 0) {
-			US_LOG_PERROR("Can't VIDIOC_QBUF");
-			return -1;
-		}
-	}
-	return 0;
-}
-
-static int _device_apply_resolution(us_device_s *dev, unsigned width, unsigned height) {
-	// Тут VIDEO_MIN_* не используются из-за странностей минимального разрешения при отсутствии сигнала
-	// у некоторых устройств, например TC358743
-	if (
-		width == 0 || width > US_VIDEO_MAX_WIDTH
-		|| height == 0 || height > US_VIDEO_MAX_HEIGHT
-	) {
-		US_LOG_ERROR("Requested forbidden resolution=%ux%u: min=1x1, max=%ux%u",
-			width, height, US_VIDEO_MAX_WIDTH, US_VIDEO_MAX_HEIGHT);
-		return -1;
-	}
-	_RUN(width) = width;
-	_RUN(height) = height;
-	return 0;
-}
-
-static void _device_apply_controls(us_device_s *dev) {
-#	define SET_CID_VALUE(x_cid, x_field, x_value, x_quiet) { \
-			struct v4l2_queryctrl m_query; \
-			if (_device_query_control(dev, &m_query, #x_field, x_cid, x_quiet) == 0) { \
-				_device_set_control(dev, &m_query, #x_field, x_cid, x_value, x_quiet); \
-			} \
-		}
-
-#	define SET_CID_DEFAULT(x_cid, x_field, x_quiet) { \
-			struct v4l2_queryctrl m_query; \
-			if (_device_query_control(dev, &m_query, #x_field, x_cid, x_quiet) == 0) { \
-				_device_set_control(dev, &m_query, #x_field, x_cid, m_query.default_value, x_quiet); \
-			} \
-		}
-
-#	define CONTROL_MANUAL_CID(x_cid, x_field) { \
-			if (dev->ctl.x_field.mode == CTL_MODE_VALUE) { \
-				SET_CID_VALUE(x_cid, x_field, dev->ctl.x_field.value, false); \
-			} else if (dev->ctl.x_field.mode == CTL_MODE_DEFAULT) { \
-				SET_CID_DEFAULT(x_cid, x_field, false); \
-			} \
-		}
-
-#	define CONTROL_AUTO_CID(x_cid_auto, x_cid_manual, x_field) { \
-			if (dev->ctl.x_field.mode == CTL_MODE_VALUE) { \
-				SET_CID_VALUE(x_cid_auto, x_field##_auto, 0, true); \
-				SET_CID_VALUE(x_cid_manual, x_field, dev->ctl.x_field.value, false); \
-			} else if (dev->ctl.x_field.mode == CTL_MODE_AUTO) { \
-				SET_CID_VALUE(x_cid_auto, x_field##_auto, 1, false); \
-			} else if (dev->ctl.x_field.mode == CTL_MODE_DEFAULT) { \
-				SET_CID_VALUE(x_cid_auto, x_field##_auto, 0, true); /* Reset inactive flag */ \
-				SET_CID_DEFAULT(x_cid_manual, x_field, false); \
-				SET_CID_DEFAULT(x_cid_auto, x_field##_auto, false); \
-			} \
-		}
-
-	CONTROL_AUTO_CID	(V4L2_CID_AUTOBRIGHTNESS,		V4L2_CID_BRIGHTNESS,				brightness);
-	CONTROL_MANUAL_CID	(								V4L2_CID_CONTRAST,					contrast);
-	CONTROL_MANUAL_CID	(								V4L2_CID_SATURATION,				saturation);
-	CONTROL_AUTO_CID	(V4L2_CID_HUE_AUTO,				V4L2_CID_HUE,						hue);
-	CONTROL_MANUAL_CID	(								V4L2_CID_GAMMA,						gamma);
-	CONTROL_MANUAL_CID	(								V4L2_CID_SHARPNESS,					sharpness);
-	CONTROL_MANUAL_CID	(								V4L2_CID_BACKLIGHT_COMPENSATION,	backlight_compensation);
-	CONTROL_AUTO_CID	(V4L2_CID_AUTO_WHITE_BALANCE,	V4L2_CID_WHITE_BALANCE_TEMPERATURE,	white_balance);
-	CONTROL_AUTO_CID	(V4L2_CID_AUTOGAIN,				V4L2_CID_GAIN,						gain);
-	CONTROL_MANUAL_CID	(								V4L2_CID_COLORFX,					color_effect);
-	CONTROL_MANUAL_CID	(								V4L2_CID_ROTATE,	   				rotate);
-	CONTROL_MANUAL_CID	(								V4L2_CID_VFLIP,						flip_vertical);
-	CONTROL_MANUAL_CID	(								V4L2_CID_HFLIP,						flip_horizontal);
-
-#	undef CONTROL_AUTO_CID
-#	undef CONTROL_MANUAL_CID
-#	undef SET_CID_DEFAULT
-#	undef SET_CID_VALUE
-}
-
-static int _device_query_control(
-	us_device_s *dev, struct v4l2_queryctrl *query,
-	const char *name, unsigned cid, bool quiet) {
-
-	// cppcheck-suppress redundantPointerOp
-	US_MEMSET_ZERO(*query);
-	query->id = cid;
-
-	if (_D_XIOCTL(VIDIOC_QUERYCTRL, query) < 0 || query->flags & V4L2_CTRL_FLAG_DISABLED) {
-		if (!quiet) {
-			US_LOG_ERROR("Changing control %s is unsupported", name);
-		}
-		return -1;
-	}
-	return 0;
-}
-
-static void _device_set_control(
-	us_device_s *dev, struct v4l2_queryctrl *query,
-	const char *name, unsigned cid, int value, bool quiet) {
-
-	if (value < query->minimum || value > query->maximum || value % query->step != 0) {
-		if (!quiet) {
-			US_LOG_ERROR("Invalid value %d of control %s: min=%d, max=%d, default=%d, step=%u",
-				value, name, query->minimum, query->maximum, query->default_value, query->step);
-		}
-		return;
-	}
-
-	struct v4l2_control ctl = {0};
-	ctl.id = cid;
-	ctl.value = value;
-
-	if (_D_XIOCTL(VIDIOC_S_CTRL, &ctl) < 0) {
-		if (!quiet) {
-			US_LOG_PERROR("Can't set control %s", name);
-		}
-	} else if (!quiet) {
-		US_LOG_INFO("Applying control %s: %d", name, ctl.value);
-	}
-}
-
-static const char *_format_to_string_nullable(unsigned format) {
-	US_ARRAY_ITERATE(_FORMATS, 0, item, {
-		if (item->format == format) {
-			return item->name;
-		}
-	});
-	return NULL;
-}
-
-static const char *_format_to_string_supported(unsigned format) {
-	const char *const format_str = _format_to_string_nullable(format);
-	return (format_str == NULL ? "unsupported" : format_str);
-}
-
-static const char *_standard_to_string(v4l2_std_id standard) {
-	US_ARRAY_ITERATE(_STANDARDS, 0, item, {
-		if (item->standard == standard) {
-			return item->name;
-		}
-	});
-	return _STANDARDS[0].name;
-}
-
-static const char *_io_method_to_string_supported(enum v4l2_memory io_method) {
-	US_ARRAY_ITERATE(_IO_METHODS, 0, item, {
-		if (item->io_method == io_method) {
-			return item->name;
-		}
-	});
-	return "unsupported";
-}

src/ustreamer/encoder.c

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  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    #
@@ -73,13 +73,13 @@ void us_encoder_destroy(us_encoder_s *enc) {
 	free(enc);
 }
 
-us_encoder_type_e us_encoder_parse_type(const char *str) {
+int us_encoder_parse_type(const char *str) {
 	US_ARRAY_ITERATE(_ENCODER_TYPES, 0, item, {
 		if (!strcasecmp(item->name, str)) {
 			return item->type;
 		}
 	});
-	return US_ENCODER_TYPE_UNKNOWN;
+	return -1;
 }
 
 const char *us_encoder_type_to_string(us_encoder_type_e type) {
@@ -91,12 +91,14 @@ const char *us_encoder_type_to_string(us_encoder_type_e type) {
 	return _ENCODER_TYPES[0].name;
 }
 
-us_workers_pool_s *us_encoder_workers_pool_init(us_encoder_s *enc, us_device_s *dev) {
+void us_encoder_open(us_encoder_s *enc, us_device_s *dev) {
+	assert(enc->run->pool == NULL);
+
 #	define DR(x_next) dev->run->x_next
 
 	us_encoder_type_e type = (_ER(cpu_forced) ? US_ENCODER_TYPE_CPU : enc->type);
 	unsigned quality = dev->jpeg_quality;
-	unsigned n_workers = us_min_u(enc->n_workers, DR(n_bufs));
+	unsigned n_workers = US_MIN(enc->n_workers, DR(n_bufs));
 	bool cpu_forced = false;
 
 	if (us_is_jpeg(DR(format)) && type != US_ENCODER_TYPE_HW) {
@@ -120,7 +122,7 @@ us_workers_pool_s *us_encoder_workers_pool_init(us_encoder_s *enc, us_device_s *
 		for (; _ER(n_m2ms) < n_workers; ++_ER(n_m2ms)) {
 			// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
 			char name[32];
-			snprintf(name, 32, "JPEG-%u", _ER(n_m2ms));
+			US_SNPRINTF(name, 31, "JPEG-%u", _ER(n_m2ms));
 			if (type == US_ENCODER_TYPE_M2M_VIDEO) {
 				_ER(m2ms[_ER(n_m2ms)]) = us_m2m_mjpeg_encoder_init(name, enc->m2m_path, quality);
 			} else {
@@ -162,7 +164,7 @@ us_workers_pool_s *us_encoder_workers_pool_init(us_encoder_s *enc, us_device_s *
 			: 0
 		);
 
-		return us_workers_pool_init(
+		enc->run->pool = us_workers_pool_init(
 			"JPEG", "jw", n_workers, desired_interval,
 			_worker_job_init, (void *)enc,
 			_worker_job_destroy,
@@ -171,6 +173,11 @@ us_workers_pool_s *us_encoder_workers_pool_init(us_encoder_s *enc, us_device_s *
 #	undef DR
 }
 
+void us_encoder_close(us_encoder_s *enc) {
+	assert(enc->run->pool != NULL);
+	US_DELETE(enc->run->pool, us_workers_pool_destroy);
+}
+
 void us_encoder_get_runtime_params(us_encoder_s *enc, us_encoder_type_e *type, unsigned *quality) {
 	US_MUTEX_LOCK(_ER(mutex));
 	*type = _ER(type);
@@ -195,11 +202,9 @@ static void _worker_job_destroy(void *v_job) {
 static bool _worker_run_job(us_worker_s *wr) {
 	us_encoder_job_s *job = (us_encoder_job_s *)wr->job;
 	us_encoder_s *enc = job->enc; // Just for _ER()
-	us_frame_s *src = &job->hw->raw;
+	const us_frame_s *src = &job->hw->raw;
 	us_frame_s *dest = job->dest;
 
-	assert(_ER(type) != US_ENCODER_TYPE_UNKNOWN);
-
 	if (_ER(type) == US_ENCODER_TYPE_CPU) {
 		US_LOG_VERBOSE("Compressing JPEG using CPU: worker=%s, buffer=%u",
 			wr->name, job->hw->buf.index);
@@ -223,6 +228,9 @@ static bool _worker_run_job(us_worker_s *wr) {
 		us_frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
 		usleep(5000); // Просто чтобы работала логика desired_fps
 		dest->encode_end_ts = us_get_now_monotonic(); // us_frame_encoding_end()
+
+	} else {
+		assert(0 && "Unknown encoder type");
 	}
 
 	US_LOG_VERBOSE("Compressed new JPEG: size=%zu, time=%0.3Lf, worker=%s, buffer=%u",

src/ustreamer/encoder.h

@@ -2,7 +2,7 @@
 #                                                                            #
 #    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
 #                                                                            #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  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    #
@@ -35,8 +35,8 @@
 #include "../libs/threading.h"
 #include "../libs/logging.h"
 #include "../libs/frame.h"
+#include "../libs/device.h"
 
-#include "device.h"
 #include "workers.h"
 #include "m2m.h"
 
@@ -47,7 +47,6 @@
 #define ENCODER_TYPES_STR "CPU, HW, M2M-VIDEO, M2M-IMAGE, NOOP"
 
 typedef enum {
-	US_ENCODER_TYPE_UNKNOWN, // Only for us_encoder_parse_type() and main()
 	US_ENCODER_TYPE_CPU,
 	US_ENCODER_TYPE_HW,
 	US_ENCODER_TYPE_M2M_VIDEO,
@@ -63,6 +62,8 @@ typedef struct {
 
 	unsigned			n_m2ms;
 	us_m2m_encoder_s	**m2ms;
+
+	us_workers_pool_s	*pool;
 } us_encoder_runtime_s;
 
 typedef struct {
@@ -83,10 +84,10 @@ typedef struct {
 us_encoder_s *us_encoder_init(void);
 void us_encoder_destroy(us_encoder_s *enc);
 
-us_encoder_type_e us_encoder_parse_type(const char *str);
+int us_encoder_parse_type(const char *str);
 const char *us_encoder_type_to_string(us_encoder_type_e type);
 
-us_workers_pool_s *us_encoder_workers_pool_init(us_encoder_s *enc, us_device_s *dev);
-void us_encoder_get_runtime_params(us_encoder_s *enc, us_encoder_type_e *type, unsigned *quality);
+void us_encoder_open(us_encoder_s *enc, us_device_s *dev);
+void us_encoder_close(us_encoder_s *enc);
 
-int us_encoder_compress(us_encoder_s *enc, unsigned worker_number, us_frame_s *src, us_frame_s *dest);
+void us_encoder_get_runtime_params(us_encoder_s *enc, us_encoder_type_e *type, unsigned *quality);

src/ustreamer/encoders/cpu/encoder.c

@@ -7,7 +7,7 @@
 #    Copyright (C) 2005-2006  Laurent Pinchart & Michel Xhaard               #
 #    Copyright (C) 2006  Gabriel A. Devenyi                                  #
 #    Copyright (C) 2007  Tom Stöveken                                        #
-#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#    Copyright (C) 2018-2023  Maxim Devaev <mdevaev@gmail.com>               #
 #                                                                            #
 #    This program is free software: you can redistribute it and/or modify    #
 #    it under the terms of the GNU General Public License as published by    #
@@ -37,10 +37,10 @@ typedef struct {
 
 static void _jpeg_set_dest_frame(j_compress_ptr jpeg, us_frame_s *frame);
 
-static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
-static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
+static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
 static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
 static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
+static void _jpeg_write_scanlines_bgr24(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
 
 static void _jpeg_init_destination(j_compress_ptr jpeg);
 static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg);
@@ -63,27 +63,24 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
 	jpeg.image_width = src->width;
 	jpeg.image_height = src->height;
 	jpeg.input_components = 3;
-	jpeg.in_color_space = JCS_RGB;
+	jpeg.in_color_space = ((src->format == V4L2_PIX_FMT_YUYV || src->format == V4L2_PIX_FMT_UYVY) ? JCS_YCbCr : JCS_RGB);
 
 	jpeg_set_defaults(&jpeg);
 	jpeg_set_quality(&jpeg, quality, TRUE);
 
 	jpeg_start_compress(&jpeg, TRUE);
 
-#	define WRITE_SCANLINES(x_format, x_func) \
-		case x_format: { x_func(&jpeg, src); break; }
-
 	switch (src->format) {
 		// https://www.fourcc.org/yuv.php
-		WRITE_SCANLINES(V4L2_PIX_FMT_YUYV, _jpeg_write_scanlines_yuyv);
-		WRITE_SCANLINES(V4L2_PIX_FMT_UYVY, _jpeg_write_scanlines_uyvy);
-		WRITE_SCANLINES(V4L2_PIX_FMT_RGB565, _jpeg_write_scanlines_rgb565);
-		WRITE_SCANLINES(V4L2_PIX_FMT_RGB24, _jpeg_write_scanlines_rgb24);
-		default: assert(0 && "Unsupported input format for CPU encoder");
+		case V4L2_PIX_FMT_YUYV:
+		case V4L2_PIX_FMT_YVYU:
+		case V4L2_PIX_FMT_UYVY:		_jpeg_write_scanlines_yuv(&jpeg, src); break;
+		case V4L2_PIX_FMT_RGB565:	_jpeg_write_scanlines_rgb565(&jpeg, src); break;
+		case V4L2_PIX_FMT_RGB24:	_jpeg_write_scanlines_rgb24(&jpeg, src); break;
+		case V4L2_PIX_FMT_BGR24:	_jpeg_write_scanlines_bgr24(&jpeg, src); break;
+		default: assert(0 && "Unsupported input format for CPU encoder"); return;
 	}
 
-#	undef WRITE_SCANLINES
-
 	jpeg_finish_compress(&jpeg);
 	jpeg_destroy_compress(&jpeg);
 
@@ -106,39 +103,43 @@ static void _jpeg_set_dest_frame(j_compress_ptr jpeg, us_frame_s *frame) {
 	frame->used = 0;
 }
 
-#define YUV_R(_y, _, _v)	(((_y) + (359 * (_v))) >> 8)
-#define YUV_G(_y, _u, _v)	(((_y) - (88 * (_u)) - (183 * (_v))) >> 8)
-#define YUV_B(_y, _u, _)	(((_y) + (454 * (_u))) >> 8)
-#define NORM_COMPONENT(_x)	(((_x) > 255) ? 255 : (((_x) < 0) ? 0 : (_x)))
-
-static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
+static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
 	uint8_t *line_buf;
 	US_CALLOC(line_buf, frame->width * 3);
 
 	const unsigned padding = us_frame_get_padding(frame);
 	const uint8_t *data = frame->data;
-	unsigned z = 0;
 
 	while (jpeg->next_scanline < frame->height) {
 		uint8_t *ptr = line_buf;
 
 		for (unsigned x = 0; x < frame->width; ++x) {
-			const int y = (!z ? data[0] << 8 : data[2] << 8);
-			const int u = data[1] - 128;
-			const int v = data[3] - 128;
-
-			const int r = YUV_R(y, u, v);
-			const int g = YUV_G(y, u, v);
-			const int b = YUV_B(y, u, v);
-
-			*(ptr++) = NORM_COMPONENT(r);
-			*(ptr++) = NORM_COMPONENT(g);
-			*(ptr++) = NORM_COMPONENT(b);
-
-			if (z++) {
-				z = 0;
-				data += 4;
+			// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-uyvy.html
+			const bool is_odd_pixel = x & 1;
+			uint8_t y, u, v;
+			if (frame->format == V4L2_PIX_FMT_YUYV) {
+				y = data[is_odd_pixel ? 2 : 0];
+				u = data[1];
+				v = data[3];
+			} else if (frame->format == V4L2_PIX_FMT_YVYU) {
+				y = data[is_odd_pixel ? 2 : 0];
+				u = data[3];
+				v = data[1];
+			} else if (frame->format == V4L2_PIX_FMT_UYVY) {
+				y = data[is_odd_pixel ? 3 : 1];
+				u = data[0];
+				v = data[2];
+			} else {
+				assert(0 && "Unsupported pixel format");
+				return; // Makes linter happy
 			}
+
+			ptr[0] = y;
+			ptr[1] = u;
+			ptr[2] = v;
+			ptr += 3;
+
+			data += (is_odd_pixel ? 4 : 0);
 		}
 		data += padding;
 
@@ -149,49 +150,6 @@ static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg, const
 	free(line_buf);
 }
 
-static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
-	uint8_t *line_buf;
-	US_CALLOC(line_buf, frame->width * 3);
-
-	const unsigned padding = us_frame_get_padding(frame);
-	const uint8_t *data = frame->data;
-	unsigned z = 0;
-
-	while (jpeg->next_scanline < frame->height) {
-		uint8_t *ptr = line_buf;
-
-		for (unsigned x = 0; x < frame->width; ++x) {
-			const int y = (!z ? data[1] << 8 : data[3] << 8);
-			const int u = data[0] - 128;
-			const int v = data[2] - 128;
-
-			const int r = YUV_R(y, u, v);
-			const int g = YUV_G(y, u, v);
-			const int b = YUV_B(y, u, v);
-
-			*(ptr++) = NORM_COMPONENT(r);
-			*(ptr++) = NORM_COMPONENT(g);
-			*(ptr++) = NORM_COMPONENT(b);
-
-			if (z++) {
-				z = 0;
-				data += 4;
-			}
-		}
-		data += padding;
-
-		JSAMPROW scanlines[1] = {line_buf};
-		jpeg_write_scanlines(jpeg, scanlines, 1);
-	}
-
-	free(line_buf);
-}
-
-#undef NORM_COMPONENT
-#undef YUV_B
-#undef YUV_G
-#undef YUV_R
-
 static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
 	uint8_t *line_buf;
 	US_CALLOC(line_buf, frame->width * 3);
@@ -205,9 +163,10 @@ static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, cons
 		for (unsigned x = 0; x < frame->width; ++x) {
 			const unsigned int two_byte = (data[1] << 8) + data[0];
 
-			*(ptr++) = data[1] & 248; // Red
-			*(ptr++) = (uint8_t)((two_byte & 2016) >> 3); // Green
-			*(ptr++) = (data[0] & 31) * 8; // Blue
+			ptr[0] = data[1] & 248; // Red
+			ptr[1] = (uint8_t)((two_byte & 2016) >> 3); // Green
+			ptr[2] = (data[0] & 31) * 8; // Blue
+			ptr += 3;
 
 			data += 2;
 		}
@@ -228,10 +187,37 @@ static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const
 		JSAMPROW scanlines[1] = {data};
 		jpeg_write_scanlines(jpeg, scanlines, 1);
 
-		data += (jpeg->next_scanline * frame->width * 3) + padding;
+		data += (frame->width * 3) + padding;
 	}
 }
 
+static void _jpeg_write_scanlines_bgr24(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
+	uint8_t *line_buf;
+	US_CALLOC(line_buf, frame->width * 3);
+
+	const unsigned padding = us_frame_get_padding(frame);
+	uint8_t *data = frame->data;
+
+	while (jpeg->next_scanline < frame->height) {
+		uint8_t *ptr = line_buf;
+
+		// swap B and R values
+		for (unsigned x = 0; x < frame->width * 3; x += 3) {
+			ptr[0] = data[x + 2];
+			ptr[1] = data[x + 1];
+			ptr[2] = data[x];
+			ptr += 3;
+		}
+		
+		JSAMPROW scanlines[1] = {line_buf};
+		jpeg_write_scanlines(jpeg, scanlines, 1);
+
+		data += (frame->width * 3) + padding;
+	}
+
+	free(line_buf);
+}
+
 #define JPEG_OUTPUT_BUFFER_SIZE ((size_t)4096)
 
 static void _jpeg_init_destination(j_compress_ptr jpeg) {