Bump version: 5.45 → 5.46

Clang reported "warning: variable 'slc' is incremented both in the loop
header and in the loop body".

.bumpversion.cfg

@@ -1,18 +1,18 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 5.10
+current_version = 5.46
 parse = (?P<major>\d+)\.(?P<minor>\d+)
 serialize = 
 	{major}.{minor}
 
-[bumpversion:file:src/libs/config.h]
+[bumpversion:file:src/libs/const.h]
 parse = (?P<major>\d+)
 serialize = {major}
 search = VERSION_MAJOR {current_version}
 replace = VERSION_MAJOR {new_version}
 
-[bumpversion:file:./src/libs/config.h]
+[bumpversion:file:./src/libs/const.h]
 parse = <major>\d+\.(?P<minor>\d+)
 serialize = {minor}
 search = VERSION_MINOR {current_version}

.dockerignore

@@ -7,3 +7,4 @@
 !python/**
 !janus/**
 !man/**
+!pkg/docker/entry.sh

.github/FUNDING.yml

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

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

@@ -0,0 +1,81 @@
+name: Build Alpine
+
+on:
+    push:
+        branches: [master, build_*]
+        tags: [v*]
+    pull_request:
+        branches: [master]
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      -
+        name: Login to DockerHub Container Registry
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            ${{ secrets.DOCKERHUB_REPO }}/ustreamer,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            ghcr.io/${{ github.repository }},enable=${{ github.event_name != 'pull_request' }}
+          tags: |
+            type=ref,event=tag
+            type=sha,format=long
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          driver-opts: image=moby/buildkit:master
+      -
+        name: Build and export to Docker
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          load: true
+          tags: ustreamer
+          file: pkg/docker/Dockerfile.alpine
+      -
+        name: Test
+        run: |
+          echo version: $(docker run --rm -t ustreamer --version)
+          echo -e "features:\n$(docker run --rm -t ustreamer --features)"
+      -
+        name: Build multi arch
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          platforms: linux/arm64,linux/amd64,linux/arm/v7
+          file: pkg/docker/Dockerfile.alpine
+      -
+        name: Push
+        if: steps.meta.outputs.tags != ''
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          platforms: linux/arm64,linux/amd64,linux/arm/v7
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          file: pkg/docker/Dockerfile.alpine

.gitignore

@@ -4,6 +4,7 @@
 /pkg/arch/src/
 /src/build/
 /python/build/
+/python/ustreamer.egg-info/
 /janus/build/
 /ustreamer
 /ustreamer-dump

Makefile

@@ -71,6 +71,7 @@ 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
 
 

README.md

@@ -2,10 +2,8 @@
 [![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 [Pi-KVM](https://github.com/pikvm/pikvm) project designed to stream [VGA](https://www.amazon.com/dp/B0126O0RDC) and [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) screencast hardware data with the highest resolution and FPS possible.
+µStreamer is 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.
 
 µStreamer is very similar to [mjpg-streamer](https://github.com/jacksonliam/mjpg-streamer) with ```input_uvc.so``` and ```output_http.so``` plugins, however, there are some major differences. The key ones are:
 
@@ -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`.
+* 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
@@ -67,7 +86,7 @@ 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
+```
 $ ./ustreamer \
     --format=uyvy \ # Device input format
     --encoder=m2m-image \ # Hardware encoding on V4L2 M2M driver
@@ -81,10 +100,67 @@ $ ./ustreamer \
 
 You can always view the full list of options with ```ustreamer --help```.
 
+-----
+# Docker (Raspberry Pi 4 HDMI)
+
+## Preparations
+Add following lines to /boot/firmware/usercfg.txt:
+
+```
+gpu_mem=128
+dtoverlay=tc358743
+```
+
+Check size of CMA:
+
+```
+$ 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)
+```
+
+If it is smaller than 128M add following to /boot/firmware/cmdline.txt:
+
+```
+cma=128M
+```
+
+Save changes and reboot.
+
+## Launch
+Start container:
+
+```
+$ 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
+```
+$ docker run --rm pikvm/ustreamer:latest \
+    --format=uyvy \
+    --workers=3 \
+    --persistent \
+    --dv-timings \
+    --drop-same-frames=30
+```
+
+## EDID
+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` 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
 ```
@@ -93,7 +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
 ```
 
@@ -133,7 +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 [Pi-KVM](https://github.com/pikvm/pikvm) специально для стриминга с устройств видеозахвата [VGA](https://www.amazon.com/dp/B0126O0RDC) и [HDMI](https://auvidea.com/b101-hdmi-to-csi-2-bridge-15-pin-fpc/) с максимально возможным разрешением и FPS, которые только позволяет железо.
-
-Функционально µStreamer очень похож на [mjpg-streamer](https://github.com/jacksonliam/mjpg-streamer) при использовании им плагинов ```input_uvc.so``` и ```output_http.so```, однако имеет ряд серьезных отличий. Основные приведены в этой таблице:
-
-| **Фича** | **µStreamer** | **mjpg-streamer** |
-|----------|---------------|-------------------|
-| Многопоточное кодирование JPEG | ✔ | ✘ |
-| 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

@@ -78,6 +78,17 @@ memsink: {
 EOF
 ```
 
+If you're using a TC358743-based video capture device that supports audio capture, run the following command to enable audio streaming:
+
+```sh
+cat << EOF >> /opt/janus/lib/janus/configs/janus.plugin.ustreamer.jcfg
+audio: {
+    device = "hw:1"
+    tc358743 = "/dev/video0"
+}
+EOF
+```
+
 ### Start µStreamer and the Janus WebRTC Server
 
 For µStreamer to share the video stream with the µStreamer Janus plugin, µStreamer must run with the following command-line flags:
@@ -111,13 +122,14 @@ The client-side JavaScript application uses the following control flow:
 1. The client instructs the Janus server to attach the µStreamer Janus plugin.
 1. On success, the client obtains a plugin handle through which it can send requests directly to the µStreamer Janus plugin. The client processes responses via the `attach` callbacks:
    - `onmessage` for general messages
-   - `onremotetrack` for the H.264 video stream
+   - `onremotetrack` for the H.264 video stream and (optionally) an Opus audio stream
 1. The client issues a `watch` request to the µStreamer Janus plugin, which initiates the H.264 stream in the plugin itself.
    - It takes a few seconds for uStreamer's video stream to become available to Janus. The first `watch` request may fail, so the client must retry the `watch` request.
 1. The client and server negotiate the underlying parameters of the WebRTC session. This procedure is called JavaScript Session Establishment Protocol (JSEP). The server makes a `jsepOffer` to the client, and the client responds with a `jsepAnswer`.
 1. The client issues a `start` request to the µStreamer Janus plugin to indicate that the client wants to begin consuming the video stream.
-1. The µStreamer Janus plugin delivers the H.264 video stream to the client via WebRTC.
-1. The Janus client library invokes the `onremotetrack` callback. The client attaches the video stream to the `<video>` element, rendering the video stream in the browser window.
+1. The µStreamer Janus plugin delivers the H.264 video stream and (optionally) an Opus audio stream to the client via WebRTC.
+1. The Janus client library invokes the `onremotetrack` callback with the video stream. The client attaches the video stream to the `<video>` element, rendering the video stream in the browser window.
+1. (if an audio track is available) The Janus client library invokes the `onremotetrack` callback with the Opus audio stream. The client adds the audio stream to the `<video>` element, rendering the audio in the browser window.
 
 ### Sample Code
 
@@ -176,8 +188,8 @@ The client-side JavaScript application uses the following control flow:
         // successfully.
         success: function (pluginHandle) {
           uStreamerPluginHandle = pluginHandle;
-          // Instruct the µStreamer Janus plugin to initiate the video stream.
-          uStreamerPluginHandle.send({ message: { request: "watch" } });
+          // Instruct the µStreamer Janus plugin to initiate streaming.
+          uStreamerPluginHandle.send({ message: { request: "watch", params: {audio: true} } });
         },
 
         // Callback function if the server fails to attach the plugin.
@@ -185,13 +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) {
@@ -211,16 +216,17 @@ The client-side JavaScript application uses the following control flow:
           }
         },
 
-        // Callback function, for when the video stream arrives.
+        // Callback function, for when a media stream arrives.
         onremotetrack: function (mediaStreamTrack, mediaId, isAdded) {
           if (isAdded) {
             // Attach the received media track to the video element. Cloning the
             // mediaStreamTrack creates a new object with a distinct, globally
             // unique stream identifier.
             const videoElement = document.getElementById("webrtc-output");
-            const stream = new MediaStream();
-            stream.addTrack(mediaStreamTrack.clone());
-            videoElement.srcObject = stream;
+            if (videoElement.srcObject === null) {
+              videoElement.srcObject = new MediaStream();
+            }
+            videoElement.srcObject.addTrack(mediaStreamTrack.clone());
           }
         },
       });

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/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    #
@@ -23,29 +23,29 @@
 #include "audio.h"
 
 
-#define JLOG_PERROR_ALSA(_err, _prefix, _msg, ...)	JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, snd_strerror(_err))
-#define JLOG_PERROR_RES(_err, _prefix, _msg, ...)	JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, speex_resampler_strerror(_err))
-#define JLOG_PERROR_OPUS(_err, _prefix, _msg, ...)	JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, opus_strerror(_err))
+#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))
+#define _JLOG_PERROR_OPUS(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, opus_strerror(_err))
 
 // A number of frames per 1 channel:
 //   - 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_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 MIN_PCM_HZ			8000
-#define MAX_PCM_HZ			192000
-#define MAX_BUF16			HZ_TO_BUF16(MAX_PCM_HZ)
-#define MAX_BUF8			HZ_TO_BUF8(MAX_PCM_HZ)
-#define ENCODER_INPUT_HZ	48000
+#define _MIN_PCM_HZ			8000
+#define _MAX_PCM_HZ			192000
+#define _MAX_BUF16			_HZ_TO_BUF16(_MAX_PCM_HZ)
+#define _MAX_BUF8			_HZ_TO_BUF8(_MAX_PCM_HZ)
+#define _ENCODER_INPUT_HZ	48000
 
 
 typedef struct {
-	int16_t		data[MAX_BUF16];
+	int16_t		data[_MAX_BUF16];
 } _pcm_buffer_s;
 
 typedef struct {
-	uint8_t		data[MAX_BUF8]; // Worst case
+	uint8_t		data[_MAX_BUF8]; // Worst case
 	size_t		used;
 	uint64_t	pts;
 } _enc_buffer_s;
@@ -55,12 +55,25 @@ static void *_pcm_thread(void *v_audio);
 static void *_encoder_thread(void *v_audio);
 
 
-audio_s *audio_init(const char *name, unsigned pcm_hz) {
-	audio_s *audio;
-	A_CALLOC(audio, 1);
+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, unsigned pcm_hz) {
+	us_audio_s *audio;
+	US_CALLOC(audio, 1);
 	audio->pcm_hz = pcm_hz;
-	audio->pcm_queue = queue_init(8);
-	audio->enc_queue = queue_init(8);
+	audio->pcm_queue = us_queue_init(8);
+	audio->enc_queue = us_queue_init(8);
 	atomic_init(&audio->stop, false);
 
 	int err;
@@ -68,14 +81,14 @@ audio_s *audio_init(const char *name, unsigned pcm_hz) {
 	{
 		if ((err = snd_pcm_open(&audio->pcm, name, SND_PCM_STREAM_CAPTURE, 0)) < 0) {
 			audio->pcm = NULL;
-			JLOG_PERROR_ALSA(err, "audio", "Can't open PCM capture");
+			_JLOG_PERROR_ALSA(err, "audio", "Can't open PCM capture");
 			goto error;
 		}
 		assert(!snd_pcm_hw_params_malloc(&audio->pcm_params));
 
 #		define SET_PARAM(_msg, _func, ...) { \
 				if ((err = _func(audio->pcm, audio->pcm_params, ##__VA_ARGS__)) < 0) { \
-					JLOG_PERROR_ALSA(err, "audio", _msg); \
+					_JLOG_PERROR_ALSA(err, "audio", _msg); \
 					goto error; \
 				} \
 			}
@@ -85,30 +98,30 @@ audio_s *audio_init(const char *name, unsigned pcm_hz) {
 		SET_PARAM("Can't set PCM channels numbre",	snd_pcm_hw_params_set_channels, 2);
 		SET_PARAM("Can't set PCM sampling format",	snd_pcm_hw_params_set_format, SND_PCM_FORMAT_S16_LE);
 		SET_PARAM("Can't set PCM sampling rate",	snd_pcm_hw_params_set_rate_near, &audio->pcm_hz, 0);
-		if (audio->pcm_hz < MIN_PCM_HZ || audio->pcm_hz > MAX_PCM_HZ) {
-			JLOG_ERROR("audio", "Unsupported PCM freq: %u; should be: %u <= F <= %u",
-				audio->pcm_hz, MIN_PCM_HZ, MAX_PCM_HZ);
+		if (audio->pcm_hz < _MIN_PCM_HZ || audio->pcm_hz > _MAX_PCM_HZ) {
+			US_JLOG_ERROR("audio", "Unsupported PCM freq: %u; should be: %u <= F <= %u",
+				audio->pcm_hz, _MIN_PCM_HZ, _MAX_PCM_HZ);
 			goto error;
 		}
-		audio->pcm_frames = HZ_TO_FRAMES(audio->pcm_hz);
-		audio->pcm_size = HZ_TO_BUF8(audio->pcm_hz);
+		audio->pcm_frames = _HZ_TO_FRAMES(audio->pcm_hz);
+		audio->pcm_size = _HZ_TO_BUF8(audio->pcm_hz);
 		SET_PARAM("Can't apply PCM params", snd_pcm_hw_params);
 
 #		undef SET_PARAM
 	}
 
-	if (audio->pcm_hz != ENCODER_INPUT_HZ) {
-		audio->res = speex_resampler_init(2, audio->pcm_hz, ENCODER_INPUT_HZ, SPEEX_RESAMPLER_QUALITY_DESKTOP, &err);
+	if (audio->pcm_hz != _ENCODER_INPUT_HZ) {
+		audio->res = speex_resampler_init(2, audio->pcm_hz, _ENCODER_INPUT_HZ, SPEEX_RESAMPLER_QUALITY_DESKTOP, &err);
 		if (err < 0) {
 			audio->res = NULL;
-			JLOG_PERROR_RES(err, "audio", "Can't create resampler");
+			_JLOG_PERROR_RES(err, "audio", "Can't create resampler");
 			goto error;
 		}
 	}
 
 	{
 		// OPUS_APPLICATION_VOIP, OPUS_APPLICATION_RESTRICTED_LOWDELAY
-		audio->enc = opus_encoder_create(ENCODER_INPUT_HZ, 2, OPUS_APPLICATION_AUDIO, &err);
+		audio->enc = opus_encoder_create(_ENCODER_INPUT_HZ, 2, OPUS_APPLICATION_AUDIO, &err);
 		assert(err == 0);
 		assert(!opus_encoder_ctl(audio->enc, OPUS_SET_BITRATE(48000)));
 		assert(!opus_encoder_ctl(audio->enc, OPUS_SET_MAX_BANDWIDTH(OPUS_BANDWIDTH_FULLBAND)));
@@ -116,59 +129,42 @@ audio_s *audio_init(const char *name, unsigned pcm_hz) {
 		// OPUS_SET_INBAND_FEC(1), OPUS_SET_PACKET_LOSS_PERC(10): see rtpa.c
 	}
 
-	JLOG_INFO("audio", "Pipeline configured on %uHz; capturing ...", audio->pcm_hz);
+	US_JLOG_INFO("audio", "Pipeline configured on %uHz; capturing ...", audio->pcm_hz);
 	audio->tids_created = true;
-	A_THREAD_CREATE(&audio->enc_tid, _encoder_thread, audio);
-	A_THREAD_CREATE(&audio->pcm_tid, _pcm_thread, audio);
+	US_THREAD_CREATE(audio->enc_tid, _encoder_thread, audio);
+	US_THREAD_CREATE(audio->pcm_tid, _pcm_thread, audio);
 
 	return audio;
 
 	error:
-		audio_destroy(audio);
+		us_audio_destroy(audio);
 		return NULL;
 }
 
-void audio_destroy(audio_s *audio) {
+void us_audio_destroy(us_audio_s *audio) {
 	if (audio->tids_created) {
 		atomic_store(&audio->stop, true);
-		A_THREAD_JOIN(audio->pcm_tid);
-		A_THREAD_JOIN(audio->enc_tid);
+		US_THREAD_JOIN(audio->pcm_tid);
+		US_THREAD_JOIN(audio->enc_tid);
 	}
-	if (audio->enc) {
-		opus_encoder_destroy(audio->enc);
-	}
-	if (audio->res) {
-		speex_resampler_destroy(audio->res);
-	}
-	if (audio->pcm) {
-		snd_pcm_close(audio->pcm);
-	}
-	if (audio->pcm_params) {
-		snd_pcm_hw_params_free(audio->pcm_params);
-	}
-#	define FREE_QUEUE(_suffix) { \
-			while (!queue_get_free(audio->_suffix##_queue)) { \
-				_##_suffix##_buffer_s *ptr; \
-				assert(!queue_get(audio->_suffix##_queue, (void **)&ptr, 1)); \
-				free(ptr); \
-			} \
-			queue_destroy(audio->_suffix##_queue); \
-		}
-	FREE_QUEUE(enc);
-	FREE_QUEUE(pcm);
-#	undef FREE_QUEUE
+	US_DELETE(audio->enc, opus_encoder_destroy);
+	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);
 	if (audio->tids_created) {
-		JLOG_INFO("audio", "Pipeline closed");
+		US_JLOG_INFO("audio", "Pipeline closed");
 	}
 	free(audio);
 }
 
-int audio_get_encoded(audio_s *audio, uint8_t *data, size_t *size, uint64_t *pts) {
+int us_audio_get_encoded(us_audio_s *audio, uint8_t *data, size_t *size, uint64_t *pts) {
 	if (atomic_load(&audio->stop)) {
 		return -1;
 	}
 	_enc_buffer_s *buf;
-	if (!queue_get(audio->enc_queue, (void **)&buf, 1)) {
+	if (!us_queue_get(audio->enc_queue, (void **)&buf, 0.1)) {
 		if (*size < buf->used) {
 			free(buf);
 			return -3;
@@ -183,28 +179,28 @@ int audio_get_encoded(audio_s *audio, uint8_t *data, size_t *size, uint64_t *pts
 }
 
 static void *_pcm_thread(void *v_audio) {
-	A_THREAD_RENAME("us_a_pcm");
+	US_THREAD_RENAME("us_a_pcm");
 
-	audio_s *audio = (audio_s *)v_audio;
-	uint8_t in[MAX_BUF8];
+	us_audio_s *const audio = (us_audio_s *)v_audio;
+	uint8_t in[_MAX_BUF8];
 
 	while (!atomic_load(&audio->stop)) {
-		int frames = snd_pcm_readi(audio->pcm, in, audio->pcm_frames);
+		const int frames = snd_pcm_readi(audio->pcm, in, audio->pcm_frames);
 		if (frames < 0) {
-			JLOG_PERROR_ALSA(frames, "audio", "Fatal: Can't capture PCM frames");
+			_JLOG_PERROR_ALSA(frames, "audio", "Fatal: Can't capture PCM frames");
 			break;
 		} else if (frames < (int)audio->pcm_frames) {
-			JLOG_ERROR("audio", "Fatal: Too few PCM frames captured");
+			US_JLOG_ERROR("audio", "Fatal: Too few PCM frames captured");
 			break;
 		}
 
-		if (queue_get_free(audio->pcm_queue)) {
+		if (us_queue_get_free(audio->pcm_queue)) {
 			_pcm_buffer_s *out;
-			A_CALLOC(out, 1);
+			US_CALLOC(out, 1);
 			memcpy(out->data, in, audio->pcm_size);
-			assert(!queue_put(audio->pcm_queue, out, 1));
+			assert(!us_queue_put(audio->pcm_queue, out, 0));
 		} else {
-			JLOG_ERROR("audio", "PCM queue is full");
+			US_JLOG_ERROR("audio", "PCM queue is full");
 		}
 	}
 
@@ -213,44 +209,42 @@ static void *_pcm_thread(void *v_audio) {
 }
 
 static void *_encoder_thread(void *v_audio) {
-	A_THREAD_RENAME("us_a_enc");
+	US_THREAD_RENAME("us_a_enc");
 
-	audio_s *audio = (audio_s *)v_audio;
-	int16_t in_res[MAX_BUF16];
+	us_audio_s *const audio = (us_audio_s *)v_audio;
+	int16_t in_res[_MAX_BUF16];
 
 	while (!atomic_load(&audio->stop)) {
 		_pcm_buffer_s *in;
-		if (!queue_get(audio->pcm_queue, (void **)&in, 1)) {
+		if (!us_queue_get(audio->pcm_queue, (void **)&in, 0.1)) {
 			int16_t *in_ptr;
-			if (audio->res) {
-				assert(audio->pcm_hz != ENCODER_INPUT_HZ);
+			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);
+				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);
+				assert(audio->pcm_hz == _ENCODER_INPUT_HZ);
 				in_ptr = in->data;
 			}
 
 			_enc_buffer_s *out;
-			A_CALLOC(out, 1);
-			int size = opus_encode(audio->enc, in_ptr, HZ_TO_FRAMES(ENCODER_INPUT_HZ), out->data, ARRAY_LEN(out->data));
+			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");
+				_JLOG_PERROR_OPUS(size, "audio", "Fatal: Can't encode PCM frame to OPUS");
 				free(out);
 				break;
 			}
 			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);
+			audio->pts += _HZ_TO_FRAMES(_ENCODER_INPUT_HZ);
 
-			if (queue_get_free(audio->enc_queue)) {
-				assert(!queue_put(audio->enc_queue, out, 1));
-			} else {
-				JLOG_ERROR("audio", "OPUS encoder queue is full");
+			if (us_queue_put(audio->enc_queue, out, 0) != 0) {
+				US_JLOG_ERROR("audio", "OPUS encoder queue is full");
 				free(out);
 			}
 		}

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    #
@@ -36,9 +36,10 @@
 #include <opus/opus.h>
 
 #include "uslibs/tools.h"
+#include "uslibs/array.h"
 #include "uslibs/threading.h"
 
-#include "jlogging.h"
+#include "logging.h"
 #include "queue.h"
 
 
@@ -51,18 +52,20 @@ typedef struct {
 	SpeexResamplerState	*res;
 	OpusEncoder			*enc;
 
-	queue_s				*pcm_queue;
-	queue_s				*enc_queue;
+	us_queue_s			*pcm_queue;
+	us_queue_s			*enc_queue;
 	uint32_t			pts;
 
 	pthread_t			pcm_tid;
 	pthread_t			enc_tid;
 	bool				tids_created;
 	atomic_bool			stop;
-} audio_s;
+} us_audio_s;
 
 
-audio_s *audio_init(const char *name, unsigned pcm_hz);
-void audio_destroy(audio_s *audio);
+bool us_audio_probe(const char *name);
 
-int audio_get_encoded(audio_s *audio, uint8_t *data, size_t *size, uint64_t *pts);
+us_audio_s *us_audio_init(const char *name, unsigned 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);

janus/src/client.c

@@ -0,0 +1,130 @@
+/*****************************************************************************
+#                                                                            #
+#    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 "client.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) {
+	us_janus_client_s *client;
+	US_CALLOC(client, 1);
+	client->gw = gw;
+	client->session = session;
+	atomic_init(&client->transmit, false);
+	atomic_init(&client->transmit_audio, false);
+
+	atomic_init(&client->stop, false);
+
+	client->video_queue = us_queue_init(2048);
+	US_THREAD_CREATE(client->video_tid, _video_thread, client);
+
+	client->audio_queue = us_queue_init(64);
+	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);
+	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);
+
+	US_THREAD_JOIN(client->audio_tid);
+	US_QUEUE_DELETE_WITH_ITEMS(client->audio_queue, 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 || atomic_load(&client->transmit_audio))
+	) {
+		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);
+		}
+	}
+}
+
+static void *_video_thread(void *v_client) {
+	return _common_thread(v_client, true);
+}
+
+static void *_audio_thread(void *v_client) {
+	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
+
+	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)
+				&& (video || atomic_load(&client->transmit_audio))
+			) {
+				janus_plugin_rtp packet = {0};
+				packet.video = rtp->video;
+				packet.buffer = (char *)rtp->datagram;
+				packet.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);
+#				endif
+
+				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
+				}*/
+
+				client->gw->relay_rtp(client->session, &packet);
+			}
+			us_rtp_destroy(rtp);
+		}
+	}
+	return NULL;
+}

janus/src/client.h

@@ -0,0 +1,62 @@
+/*****************************************************************************
+#                                                                            #
+#    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 <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/list.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;
+	atomic_bool				transmit_audio;
+
+	pthread_t				video_tid;
+	pthread_t				audio_tid;
+	atomic_bool				stop;
+
+	us_queue_s				*video_queue;
+	us_queue_s				*audio_queue;
+
+    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);
+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

@@ -0,0 +1,95 @@
+/*****************************************************************************
+#                                                                            #
+#    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 "config.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);
+
+
+us_config_s *us_config_init(const char *config_dir_path) {
+	us_config_s *config;
+	US_CALLOC(config, 1);
+
+	char *config_file_path;
+	janus_config *jcfg = NULL;
+
+	US_ASPRINTF(config_file_path, "%s/%s.jcfg", config_dir_path, US_PLUGIN_PACKAGE);
+	US_JLOG_INFO("config", "Reading config file '%s' ...", config_file_path);
+
+	jcfg = janus_config_parse(config_file_path);
+	if (jcfg == NULL) {
+		US_JLOG_ERROR("config", "Can't read config");
+		goto error;
+	}
+	janus_config_print(jcfg);
+
+	if (
+		(config->video_sink_name = _get_value(jcfg, "memsink", "object")) == NULL
+		&& (config->video_sink_name = _get_value(jcfg, "video", "sink")) == NULL
+	) {
+		US_JLOG_ERROR("config", "Missing config value: video.sink (ex. memsink.object)");
+		goto error;
+	}
+	if ((config->audio_dev_name = _get_value(jcfg, "audio", "device")) != NULL) {
+		if ((config->tc358743_dev_path = _get_value(jcfg, "audio", "tc358743")) == NULL) {
+			US_JLOG_INFO("config", "Missing config value: audio.tc358743");
+			goto error;
+		}
+	}
+
+	goto ok;
+	error:
+		us_config_destroy(config);
+		config = NULL;
+	ok:
+		US_DELETE(jcfg, janus_config_destroy);
+		free(config_file_path);
+		return config;
+}
+
+void us_config_destroy(us_config_s *config) {
+	US_DELETE(config->video_sink_name, free);
+	US_DELETE(config->audio_dev_name, free);
+	US_DELETE(config->tc358743_dev_path, free);
+	free(config);
+}
+
+static char *_get_value(janus_config *jcfg, const char *section, const char *option) {
+	janus_config_category *section_obj = janus_config_get_create(jcfg, NULL, janus_config_type_category, section);
+	janus_config_item *option_obj = janus_config_get(jcfg, section_obj, janus_config_type_item, option);
+	if (option_obj == NULL || option_obj->value == NULL || option_obj->value[0] == '\0') {
+		return NULL;
+	}
+	return us_strdup(option_obj->value);
+}
+
+/*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) {
+		value = (!strcasecmp(tmp, "1") || !strcasecmp(tmp, "true") || !strcasecmp(tmp, "yes"));
+		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    #
@@ -20,17 +20,27 @@
 *****************************************************************************/
 
 
+#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"
 
-#define JLOG_INFO(_prefix, _msg, ...)	JANUS_LOG(LOG_INFO, "== ustreamer/%-9s -- " _msg "\n", _prefix, ##__VA_ARGS__)
-#define JLOG_WARN(_prefix, _msg, ...)	JANUS_LOG(LOG_WARN, "== ustreamer/%-9s -- " _msg "\n", _prefix, ##__VA_ARGS__)
-#define JLOG_ERROR(_prefix, _msg, ...)	JANUS_LOG(LOG_ERR, "== ustreamer/%-9s -- " _msg "\n", _prefix, ##__VA_ARGS__)
 
-#define JLOG_PERROR(_prefix, _msg, ...) { \
-		char _perror_buf[1024] = {0}; \
-		char *_perror_ptr = errno_to_string(errno, _perror_buf, 1023); \
-		JANUS_LOG(LOG_ERR, "[ustreamer/%-9s] " _msg ": %s\n", _prefix, ##__VA_ARGS__, _perror_ptr); \
-	}
+typedef struct {
+	char	*video_sink_name;
+
+	char	*audio_dev_name;
+	char	*tc358743_dev_path;
+} us_config_s;
+
+
+us_config_s *us_config_init(const char *config_dir_path);
+void us_config_destroy(us_config_s *config);

janus/src/const.h

@@ -0,0 +1,26 @@
+/*****************************************************************************
+#                                                                            #
+#    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
+
+#define US_PLUGIN_NAME		"ustreamer"
+#define US_PLUGIN_PACKAGE	"janus.plugin.ustreamer"

janus/src/logging.h

@@ -0,0 +1,46 @@
+/*****************************************************************************
+#                                                                            #
+#    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 <janus/plugins/plugin.h>
+
+#include "uslibs/tools.h"
+
+#include "const.h"
+
+
+#define US_JLOG_INFO(x_prefix, x_msg, ...)	JANUS_LOG(LOG_INFO, "== %s/%-9s -- " x_msg "\n", US_PLUGIN_NAME, x_prefix, ##__VA_ARGS__)
+#define US_JLOG_WARN(x_prefix, x_msg, ...)	JANUS_LOG(LOG_WARN, "== %s/%-9s -- " x_msg "\n", US_PLUGIN_NAME, x_prefix, ##__VA_ARGS__)
+#define US_JLOG_ERROR(x_prefix, x_msg, ...)	JANUS_LOG(LOG_ERR, "== %s/%-9s -- " x_msg "\n", US_PLUGIN_NAME, x_prefix, ##__VA_ARGS__)
+
+#define US_JLOG_PERROR(x_prefix, x_msg, ...) { \
+		char *const m_perror_str = us_errno_to_string(errno); \
+		JANUS_LOG(LOG_ERR, "[%s/%-9s] " x_msg ": %s\n", US_PLUGIN_NAME, x_prefix, ##__VA_ARGS__, m_perror_str); \
+		free(m_perror_str); \
+	}
+
+#define US_ONCE(...) { \
+		const int m_reported = __LINE__; \
+		if (m_reported != once) { \
+			__VA_ARGS__; \
+			once = m_reported; \
+		} \
+	}

janus/src/memsinkfd.c

@@ -0,0 +1,73 @@
+/*****************************************************************************
+#                                                                            #
+#    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 "memsinkfd.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;
+	do {
+		const int result = us_flock_timedwait_monotonic(fd, 1); // lock_timeout
+		now = us_get_now_monotonic();
+		if (result < 0 && errno != EWOULDBLOCK) {
+			US_JLOG_PERROR("video", "Can't lock memsink");
+			return -1;
+		} else if (result == 0) {
+			if (mem->magic == US_MEMSINK_MAGIC && mem->version == US_MEMSINK_VERSION && mem->id != last_id) {
+				return 0;
+			}
+			if (flock(fd, LOCK_UN) < 0) {
+				US_JLOG_PERROR("video", "Can't unlock memsink");
+				return -1;
+			}
+		}
+		usleep(1000); // lock_polling
+	} while (now < 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();
+	us_frame_set_data(frame, mem->data, mem->used);
+	US_FRAME_COPY_META(mem, frame);
+	*frame_id = mem->id;
+	mem->last_client_ts = us_get_now_monotonic();
+	if (key_required) {
+		mem->key_requested = true;
+	}
+
+	bool ok = true;
+	if (frame->format != V4L2_PIX_FMT_H264) {
+		US_JLOG_ERROR("video", "Got non-H264 frame from memsink");
+		ok = false;
+	}
+	if (flock(fd, LOCK_UN) < 0) {
+		US_JLOG_PERROR("video", "Can't unlock memsink");
+		ok = false;
+	}
+	if (!ok) {
+		us_frame_destroy(frame);
+		frame = NULL;
+	}
+	return frame;
+}

janus/src/memsinkfd.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 <stdbool.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <linux/videodev2.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, 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);

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    #
@@ -31,224 +31,135 @@
 
 #include <sys/mman.h>
 #include <sys/stat.h>
-#include <linux/videodev2.h>
 
 #include <pthread.h>
 #include <jansson.h>
-#include <janus/config.h>
 #include <janus/plugins/plugin.h>
+#include <janus/rtcp.h>
 
-#include "uslibs/config.h"
+#include "uslibs/const.h"
 #include "uslibs/tools.h"
 #include "uslibs/threading.h"
 #include "uslibs/list.h"
 #include "uslibs/memsinksh.h"
 
-#include "jlogging.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"
+#include "memsinkfd.h"
+#include "config.h"
 
 
-static int _plugin_init(janus_callbacks *gw, const char *config_file_path);
-static void _plugin_destroy(void);
+static us_config_s		*_g_config = NULL;
+static const useconds_t	_g_watchers_polling = 100000;
 
-static void _plugin_create_session(janus_plugin_session *session, int *err);
-static void _plugin_destroy_session(janus_plugin_session *session, int *err);
-static json_t *_plugin_query_session(janus_plugin_session *session);
+static us_janus_client_s	*_g_clients = NULL;
+static janus_callbacks		*_g_gw = NULL;
+static us_queue_s			*_g_video_queue = NULL;
+static us_rtpv_s			*_g_rtpv = NULL;
+static us_rtpa_s			*_g_rtpa = NULL;
 
-static void _plugin_setup_media(janus_plugin_session *session);
-static void _plugin_hangup_media(janus_plugin_session *session);
-
-static struct janus_plugin_result *_plugin_handle_message(
-	janus_plugin_session *session, char *transaction, json_t *msg, json_t *jsep);
-
-
-static int _plugin_get_api_compatibility(void)		{ return JANUS_PLUGIN_API_VERSION; }
-static int _plugin_get_version(void)				{ return VERSION_U; }
-static const char *_plugin_get_version_string(void)	{ return VERSION; }
-static const char *_plugin_get_description(void)	{ return "PiKVM uStreamer Janus plugin for H.264 video"; }
-static const char *_plugin_get_name(void)			{ return "ustreamer"; }
-static const char *_plugin_get_author(void)			{ return "Maxim Devaev <mdevaev@gmail.com>"; }
-static const char *_plugin_get_package(void)		{ return "janus.plugin.ustreamer"; }
-
-// Just a stub to avoid logging spam about the plugin's purpose.
-static void _plugin_incoming_rtp(UNUSED janus_plugin_session *handle, UNUSED janus_plugin_rtp *packet) {}
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Woverride-init"
-static janus_plugin _plugin = JANUS_PLUGIN_INIT(
-	.init = _plugin_init,
-	.destroy = _plugin_destroy,
-
-	.create_session = _plugin_create_session,
-	.destroy_session = _plugin_destroy_session,
-	.query_session = _plugin_query_session,
-
-	.setup_media = _plugin_setup_media,
-	.hangup_media = _plugin_hangup_media,
-
-	.handle_message = _plugin_handle_message,
-
-	.get_api_compatibility = _plugin_get_api_compatibility,
-	.get_version = _plugin_get_version,
-	.get_version_string = _plugin_get_version_string,
-	.get_description = _plugin_get_description,
-	.get_name = _plugin_get_name,
-	.get_author = _plugin_get_author,
-	.get_package = _plugin_get_package,
-
-	.incoming_rtp = _plugin_incoming_rtp,
-);
-#pragma GCC diagnostic pop
-
-janus_plugin *create(void) { // cppcheck-suppress unusedFunction
-	return &_plugin;
-}
-
-
-typedef struct _client_sx {
-	janus_plugin_session *session;
-	bool transmit;
-
-	LIST_STRUCT(struct _client_sx);
-} _client_s;
-
-
-static char				*_g_video_sink_name = NULL;
-const long double		_g_sink_wait_timeout = 1;
-const long double		_g_sink_lock_timeout = 1;
-const useconds_t		_g_sink_lock_polling = 1000;
-
-static char				*_g_audio_dev_name = NULL;
-static char				*_g_tc358743_dev_path = NULL;
-
-const useconds_t		_g_watchers_polling = 100000;
-
-static _client_s		*_g_clients = NULL;
-static janus_callbacks	*_g_gw = NULL;
-static rtpv_s			*_g_rtpv = NULL;
-static rtpa_s			*_g_rtpa = NULL;
-
-static pthread_t		_g_video_tid;
-static atomic_bool		_g_video_tid_created = false;
+static pthread_t		_g_video_rtp_tid;
+static atomic_bool		_g_video_rtp_tid_created = false;
+static pthread_t		_g_video_sink_tid;
+static atomic_bool		_g_video_sink_tid_created = false;
 static pthread_t		_g_audio_tid;
 static atomic_bool		_g_audio_tid_created = false;
 
-static pthread_mutex_t	_g_lock = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t	_g_video_lock = PTHREAD_MUTEX_INITIALIZER;
+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;
 
 
-#define LOCK			A_MUTEX_LOCK(&_g_lock)
-#define UNLOCK			A_MUTEX_UNLOCK(&_g_lock)
-#define READY			atomic_load(&_g_ready)
-#define STOP			atomic_load(&_g_stop)
-#define HAS_WATCHERS	atomic_load(&_g_has_watchers)
+#define _LOCK_VIDEO		US_MUTEX_LOCK(_g_video_lock)
+#define _UNLOCK_VIDEO	US_MUTEX_UNLOCK(_g_video_lock)
+
+#define _LOCK_AUDIO		US_MUTEX_LOCK(_g_audio_lock)
+#define _UNLOCK_AUDIO	US_MUTEX_UNLOCK(_g_audio_lock)
+
+#define _LOCK_ALL		{ _LOCK_VIDEO; _LOCK_AUDIO; }
+#define _UNLOCK_ALL		{ _UNLOCK_AUDIO; _UNLOCK_VIDEO; }
+
+#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)
 
 
-static int _wait_frame(int fd, memsink_shared_s* mem, uint64_t last_id) {
-	long double deadline_ts = get_now_monotonic() + _g_sink_wait_timeout;
-	long double now;
-	do {
-		int result = flock_timedwait_monotonic(fd, _g_sink_lock_timeout);
-		now = get_now_monotonic();
-		if (result < 0 && errno != EWOULDBLOCK) {
-			JLOG_PERROR("video", "Can't lock memsink");
-			return -1;
-		} else if (result == 0) {
-			if (mem->magic == MEMSINK_MAGIC && mem->version == MEMSINK_VERSION && mem->id != last_id) {
-				return 0;
-			}
-			if (flock(fd, LOCK_UN) < 0) {
-				JLOG_PERROR("video", "Can't unlock memsink");
-				return -1;
-			}
+janus_plugin *create(void);
+
+
+static void *_video_rtp_thread(UNUSED void *arg) {
+	US_THREAD_RENAME("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) {
+			_LOCK_VIDEO;
+			const bool zero_playout_delay = (frame->gop == 0);
+			us_rtpv_wrap(_g_rtpv, frame, zero_playout_delay);
+			_UNLOCK_VIDEO;
+			us_frame_destroy(frame);
 		}
-		usleep(_g_sink_lock_polling);
-	} while (now < deadline_ts);
-	return -2;
+	}
+	return NULL;
 }
 
-static int _get_frame(int fd, memsink_shared_s *mem, frame_s *frame, uint64_t *frame_id) {
-	frame_set_data(frame, mem->data, mem->used);
-	FRAME_COPY_META(mem, frame);
-	*frame_id = mem->id;
-	mem->last_client_ts = get_now_monotonic();
-	int retval = 0;
-	if (frame->format != V4L2_PIX_FMT_H264) {
-		JLOG_ERROR("video", "Got non-H264 frame from memsink");
-		retval = -1;
-	}
-	if (flock(fd, LOCK_UN) < 0) {
-		JLOG_PERROR("video", "Can't unlock memsink");
-		retval = -1;
-	}
-	return retval;
-}
+static void *_video_sink_thread(UNUSED void *arg) {
+	US_THREAD_RENAME("us_video_sink");
+	atomic_store(&_g_video_sink_tid_created, true);
 
-static void _relay_rtp_clients(const rtp_s *rtp) {
-	janus_plugin_rtp packet = {0};
-	packet.video = rtp->video;
-	packet.buffer = (char *)rtp->datagram;
-	packet.length = rtp->used;
-	janus_plugin_rtp_extensions_reset(&packet.extensions);
-	LIST_ITERATE(_g_clients, client, {
-		if (client->transmit) {
-			_g_gw->relay_rtp(client->session, &packet);
-		}
-	});
-}
-
-#define IF_NOT_REPORTED(...) { \
-		unsigned _error_code = __LINE__; \
-		if (error_reported != _error_code) { __VA_ARGS__; error_reported = _error_code; } \
-	}
-
-static void *_clients_video_thread(UNUSED void *arg) {
-	A_THREAD_RENAME("us_v_clients");
-	atomic_store(&_g_video_tid_created, true);
-	atomic_store(&_g_ready, true);
-
-	frame_s *frame = frame_init();
 	uint64_t frame_id = 0;
+	int once = 0;
 
-	unsigned error_reported = 0;
-
-	while (!STOP) {
-		if (!HAS_WATCHERS) {
-			IF_NOT_REPORTED({ JLOG_INFO("video", "No active watchers, memsink disconnected"); });
+	while (!_STOP) {
+		if (!_HAS_WATCHERS) {
+			US_ONCE({ US_JLOG_INFO("video", "No active watchers, memsink disconnected"); });
 			usleep(_g_watchers_polling);
 			continue;
 		}
 
 		int fd = -1;
-		memsink_shared_s *mem = NULL;
+		us_memsink_shared_s *mem = NULL;
 
-		if ((fd = shm_open(_g_video_sink_name, O_RDWR, 0)) <= 0) {
-			IF_NOT_REPORTED({ JLOG_PERROR("video", "Can't open memsink"); });
+		if ((fd = shm_open(_g_config->video_sink_name, O_RDWR, 0)) <= 0) {
+			US_ONCE({ US_JLOG_PERROR("video", "Can't open memsink"); });
 			goto close_memsink;
 		}
 
-		if ((mem = memsink_shared_map(fd)) == NULL) {
-			IF_NOT_REPORTED({ JLOG_PERROR("video", "Can't map memsink"); });
+		if ((mem = us_memsink_shared_map(fd)) == NULL) {
+			US_ONCE({ US_JLOG_PERROR("video", "Can't map memsink"); });
 			goto close_memsink;
 		}
 
-		error_reported = 0;
+		once = 0;
 
-		JLOG_INFO("video", "Memsink opened; reading frames ...");
-		while (!STOP && HAS_WATCHERS) {
-			int result = _wait_frame(fd, mem, frame_id);
+		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) {
-				if (_get_frame(fd, mem, frame, &frame_id) != 0) {
+				us_frame_s *const frame = us_memsink_fd_get_frame(fd, mem, &frame_id, atomic_load(&_g_key_required));
+				if (frame == NULL) {
 					goto close_memsink;
 				}
-				LOCK;
-				rtpv_wrap(_g_rtpv, frame);
-				UNLOCK;
+				if (frame->key) {
+					atomic_store(&_g_key_required, false);
+				}
+				if (us_queue_put(_g_video_queue, frame, 0) != 0) {
+					US_ONCE({ US_JLOG_PERROR("video", "Video queue is full"); });
+					us_frame_destroy(frame);
+				}
 			} else if (result == -1) {
 				goto close_memsink;
 			}
@@ -256,134 +167,81 @@ static void *_clients_video_thread(UNUSED void *arg) {
 
 		close_memsink:
 			if (mem != NULL) {
-				JLOG_INFO("video", "Memsink closed");
-				memsink_shared_unmap(mem);
-				mem = NULL;
+				US_JLOG_INFO("video", "Memsink closed");
+				us_memsink_shared_unmap(mem);
 			}
-			if (fd > 0) {
+			if (fd >= 0) {
 				close(fd);
-				fd = -1;
 			}
 			sleep(1); // error_delay
 	}
-
-	frame_destroy(frame);
 	return NULL;
 }
 
-static void *_clients_audio_thread(UNUSED void *arg) {
-	A_THREAD_RENAME("us_a_clients");
+static void *_audio_thread(UNUSED void *arg) {
+	US_THREAD_RENAME("us_audio");
 	atomic_store(&_g_audio_tid_created, true);
-	assert(_g_audio_dev_name);
-	assert(_g_tc358743_dev_path);
+	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) {
+	while (!_STOP) {
+		if (!_HAS_WATCHERS || !_HAS_LISTENERS) {
 			usleep(_g_watchers_polling);
 			continue;
 		}
 
-		tc358743_info_s info = {0};
-		audio_s *audio = NULL;
+		us_tc358743_info_s info = {0};
+		us_audio_s *audio = NULL;
 
-		if (tc358743_read_info(_g_tc358743_dev_path, &info) < 0) {
+		if (us_tc358743_read_info(_g_config->tc358743_dev_path, &info) < 0) {
 			goto close_audio;
 		}
 		if (!info.has_audio) {
-			IF_NOT_REPORTED({ JLOG_INFO("audio", "No audio presented from the host"); });
+			US_ONCE({ US_JLOG_INFO("audio", "No audio presented from the host"); });
 			goto close_audio;
 		}
-		IF_NOT_REPORTED({ JLOG_INFO("audio", "Detected host audio"); });
-		if ((audio = audio_init(_g_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, info.audio_hz)) == NULL) {
 			goto close_audio;
 		}
 
-		error_reported = 0;
+		once = 0;
 
-		while (!STOP && HAS_WATCHERS) {
+		while (!_STOP && _HAS_WATCHERS && _HAS_LISTENERS) {
 			if (
-				tc358743_read_info(_g_tc358743_dev_path, &info) < 0
+				us_tc358743_read_info(_g_config->tc358743_dev_path, &info) < 0
 				|| !info.has_audio
 				|| audio->pcm_hz != info.audio_hz
 			) {
 				goto close_audio;
 			}
 
-			size_t size = RTP_DATAGRAM_SIZE - RTP_HEADER_SIZE;
+			size_t size = US_RTP_DATAGRAM_SIZE - US_RTP_HEADER_SIZE;
 			uint8_t data[size];
 			uint64_t pts;
-			int result = audio_get_encoded(audio, data, &size, &pts);
+			const int result = us_audio_get_encoded(audio, data, &size, &pts);
 			if (result == 0) {
-				LOCK;
-				rtpa_wrap(_g_rtpa, data, size, pts);
-				UNLOCK;
+				_LOCK_AUDIO;
+				us_rtpa_wrap(_g_rtpa, data, size, pts);
+				_UNLOCK_AUDIO;
 			} else if (result == -1) {
 				goto close_audio;
 			}
 		}
 
 		close_audio:
-			if (audio != NULL) {
-				audio_destroy(audio);
-			}
+			US_DELETE(audio, us_audio_destroy);
 			sleep(1); // error_delay
 	}
 	return NULL;
 }
 
-#undef IF_NOT_REPORTED
-
-static char *_get_config_value(janus_config *config, const char *section, const char *option) {
-	janus_config_category *section_obj = janus_config_get_create(config, NULL, janus_config_type_category, section);
-	janus_config_item *option_obj = janus_config_get(config, section_obj, janus_config_type_item, option);
-	if (option_obj == NULL || option_obj->value == NULL || option_obj->value[0] == '\0') {
-		return NULL;
-	}
-	return strdup(option_obj->value);
-}
-
-static int _read_config(const char *config_dir_path) {
-	int retval = 0;
-
-	char *config_file_path;
-	janus_config *config = NULL;
-
-	A_ASPRINTF(config_file_path, "%s/%s.jcfg", config_dir_path, _plugin_get_package());
-	JLOG_INFO("main", "Reading config file '%s' ...", config_file_path);
-
-	config = janus_config_parse(config_file_path);
-	if (config == NULL) {
-		JLOG_ERROR("main", "Can't read config");
-		goto error;
-	}
-	janus_config_print(config);
-
-	if (
-		(_g_video_sink_name = _get_config_value(config, "memsink", "object")) == NULL
-		&& (_g_video_sink_name = _get_config_value(config, "video", "sink")) == NULL
-	) {
-		JLOG_ERROR("main", "Missing config value: video.sink (ex. memsink.object)");
-		goto error;
-	}
-	if ((_g_audio_dev_name = _get_config_value(config, "audio", "device")) != NULL) {
-		JLOG_INFO("main", "Enabled the experimental AUDIO feature");
-		if ((_g_tc358743_dev_path = _get_config_value(config, "audio", "tc358743")) == NULL) {
-			JLOG_INFO("main", "Missing config value: audio.tc358743");
-			goto error;
-		}
-	}
-
-	goto ok;
-	error:
-		retval = -1;
-	ok:
-		if (config) {
-			janus_config_destroy(config);
-		}
-		free(config_file_path);
-		return retval;
+static void _relay_rtp_clients(const us_rtp_s *rtp) {
+	US_LIST_ITERATE(_g_clients, client, {
+		us_janus_client_send(client, rtp);
+	});
 }
 
 static int _plugin_init(janus_callbacks *gw, const char *config_dir_path) {
@@ -393,123 +251,120 @@ static int _plugin_init(janus_callbacks *gw, const char *config_dir_path) {
 	// sysctl -w net.core.rmem_max=1000000 
 	// sysctl -w net.core.wmem_max=1000000
 
-	JLOG_INFO("main", "Initializing plugin ...");
-	assert(!atomic_load(&_g_video_tid_created));
-	assert(!atomic_load(&_g_audio_tid_created));
-	assert(!READY);
-	assert(!STOP);
-	if (gw == NULL || config_dir_path == NULL || _read_config(config_dir_path) < 0) {
+	US_JLOG_INFO("main", "Initializing PiKVM uStreamer plugin %s ...", US_VERSION);
+	if (gw == NULL || config_dir_path == NULL || ((_g_config = us_config_init(config_dir_path)) == NULL)) {
 		return -1;
 	}
 	_g_gw = gw;
-	_g_rtpv = rtpv_init(_relay_rtp_clients);
-	if (_g_audio_dev_name) {
-		_g_rtpa = rtpa_init(_relay_rtp_clients);
-		A_THREAD_CREATE(&_g_audio_tid, _clients_audio_thread, NULL);
+
+	_g_video_queue = us_queue_init(1024);
+	_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);
 	}
-	A_THREAD_CREATE(&_g_video_tid, _clients_video_thread, NULL);
+	US_THREAD_CREATE(_g_video_rtp_tid, _video_rtp_thread, NULL);
+	US_THREAD_CREATE(_g_video_sink_tid, _video_sink_thread, NULL);
+
+	atomic_store(&_g_ready, true);
 	return 0;
 }
 
 static void _plugin_destroy(void) {
-	JLOG_INFO("main", "Destroying plugin ...");
+	US_JLOG_INFO("main", "Destroying plugin ...");
+
 	atomic_store(&_g_stop, true);
-	if (atomic_load(&_g_video_tid_created)) {
-		A_THREAD_JOIN(_g_video_tid);
-	}
-	if (atomic_load(&_g_audio_tid_created)) {
-		A_THREAD_JOIN(_g_audio_tid);
-	}
+#	define JOIN(_tid) { if (atomic_load(&_tid##_created)) { US_THREAD_JOIN(_tid); } }
+	JOIN(_g_video_sink_tid);
+	JOIN(_g_video_rtp_tid);
+	JOIN(_g_audio_tid);
+#	undef JOIN
 
-	LIST_ITERATE(_g_clients, client, {
-		LIST_REMOVE(_g_clients, client);
-		free(client);
+	US_LIST_ITERATE(_g_clients, client, {
+		US_LIST_REMOVE(_g_clients, client);
+		us_janus_client_destroy(client);
 	});
-	_g_clients = NULL;
 
-#	define DEL(_func, _var) { if (_var) { _func(_var); _var = NULL; } }
-	DEL(rtpa_destroy, _g_rtpa);
-	DEL(rtpv_destroy, _g_rtpv);
-	_g_gw = NULL;
-	DEL(free, _g_tc358743_dev_path);
-	DEL(free, _g_audio_dev_name);
-	DEL(free, _g_video_sink_name);
-#	undef DEL
+	US_QUEUE_DELETE_WITH_ITEMS(_g_video_queue, us_frame_destroy);
+
+	US_DELETE(_g_rtpa, us_rtpa_destroy);
+	US_DELETE(_g_rtpv, us_rtpv_destroy);
+	US_DELETE(_g_config, us_config_destroy);
 }
 
-#define IF_DISABLED(...) { if (!READY || STOP) { __VA_ARGS__ } }
+#define _IF_DISABLED(...) { if (!_READY || _STOP) { __VA_ARGS__ } }
 
 static void _plugin_create_session(janus_plugin_session *session, int *err) {
-	IF_DISABLED({ *err = -1; return; });
-	LOCK;
-	JLOG_INFO("main", "Creating session %p ...", session);
-	_client_s *client;
-	A_CALLOC(client, 1);
-	client->session = session;
-	client->transmit = true;
-	LIST_APPEND(_g_clients, client);
+	_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);
+	US_LIST_APPEND(_g_clients, client);
 	atomic_store(&_g_has_watchers, true);
-	UNLOCK;
+	_UNLOCK_ALL;
 }
 
 static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
-	IF_DISABLED({ *err = -1; return; });
-	LOCK;
+	_IF_DISABLED({ *err = -1; return; });
+	_LOCK_ALL;
 	bool found = false;
 	bool has_watchers = false;
-	LIST_ITERATE(_g_clients, client, {
+	bool has_listeners = false;
+	US_LIST_ITERATE(_g_clients, client, {
 		if (client->session == session) {
-			JLOG_INFO("main", "Removing session %p ...", session);
-			LIST_REMOVE(_g_clients, client);
-			free(client);
+			US_JLOG_INFO("main", "Removing session %p ...", session);
+			US_LIST_REMOVE(_g_clients, client);
+			us_janus_client_destroy(client);
 			found = true;
 		} else {
-			has_watchers = (has_watchers || client->transmit);
+			has_watchers = (has_watchers || atomic_load(&client->transmit));
+			has_listeners = (has_listeners || atomic_load(&client->transmit_audio));
 		}
 	});
 	if (!found) {
-		JLOG_WARN("main", "No session %p", session);
+		US_JLOG_WARN("main", "No session %p", session);
 		*err = -2;
 	}
 	atomic_store(&_g_has_watchers, has_watchers);
-	UNLOCK;
+	atomic_store(&_g_has_listeners, has_listeners);
+	_UNLOCK_ALL;
 }
 
 static json_t *_plugin_query_session(janus_plugin_session *session) {
-	IF_DISABLED({ return NULL; });
+	_IF_DISABLED({ return NULL; });
 	json_t *info = NULL;
-	LOCK;
-	LIST_ITERATE(_g_clients, client, {
+	_LOCK_ALL;
+	US_LIST_ITERATE(_g_clients, client, {
 		if (client->session == session) {
 			info = json_string("session_found");
 			break;
 		}
 	});
-	UNLOCK;
+	_UNLOCK_ALL;
 	return info;
 }
 
 static void _set_transmit(janus_plugin_session *session, UNUSED const char *msg, bool transmit) {
-	IF_DISABLED({ return; });
-	LOCK;
+	_IF_DISABLED({ return; });
+	_LOCK_ALL;
 	bool found = false;
 	bool has_watchers = false;
-	LIST_ITERATE(_g_clients, client, {
+	US_LIST_ITERATE(_g_clients, client, {
 		if (client->session == session) {
-			client->transmit = transmit;
-			// JLOG_INFO("main", "%s session %p", msg, session);
+			atomic_store(&client->transmit, transmit);
+			// US_JLOG_INFO("main", "%s session %p", msg, session);
 			found = true;
 		}
-		has_watchers = (has_watchers || client->transmit);
+		has_watchers = (has_watchers || atomic_load(&client->transmit));
 	});
 	if (!found) {
-		JLOG_WARN("main", "No session %p", session);
+		US_JLOG_WARN("main", "No session %p", session);
 	}
 	atomic_store(&_g_has_watchers, has_watchers);
-	UNLOCK;
+	_UNLOCK_ALL;
 }
 
-#undef IF_DISABLED
+#undef _IF_DISABLED
 
 static void _plugin_setup_media(janus_plugin_session *session) { _set_transmit(session, "Unmuted", true); }
 static void _plugin_hangup_media(janus_plugin_session *session) { _set_transmit(session, "Muted", false); }
@@ -520,8 +375,8 @@ static struct janus_plugin_result *_plugin_handle_message(
 	assert(transaction != NULL);
 
 #	define FREE_MSG_JSEP { \
-			if (msg) json_decref(msg); \
-			if (jsep) json_decref(jsep); \
+			US_DELETE(msg, json_decref); \
+			US_DELETE(jsep, json_decref); \
 		}
 
 	if (session == NULL || msg == NULL) {
@@ -530,69 +385,110 @@ static struct janus_plugin_result *_plugin_handle_message(
 		return janus_plugin_result_new(JANUS_PLUGIN_ERROR, (msg ? "No session" : "No message"), NULL);
 	}
 
-#	define PUSH_ERROR(_error, _reason) { \
-			/*JLOG_ERROR("main", "Message error in session %p: %s", session, _reason);*/ \
-			json_t *_event = json_object(); \
-			json_object_set_new(_event, "ustreamer", json_string("event")); \
-			json_object_set_new(_event, "error_code", json_integer(_error)); \
-			json_object_set_new(_event, "error", json_string(_reason)); \
-			_g_gw->push_event(session, &_plugin, transaction, _event, NULL); \
-			json_decref(_event); \
+#	define PUSH_ERROR(x_error, x_reason) { \
+			/*US_JLOG_ERROR("main", "Message error in session %p: %s", session, x_reason);*/ \
+			json_t *m_event = json_object(); \
+			json_object_set_new(m_event, "ustreamer", json_string("event")); \
+			json_object_set_new(m_event, "error_code", json_integer(x_error)); \
+			json_object_set_new(m_event, "error", json_string(x_reason)); \
+			_g_gw->push_event(session, create(), transaction, m_event, NULL); \
+			json_decref(m_event); \
 		}
 
-	json_t *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 *request_str = json_string_value(request_obj);
-	if (!request_str) {
+	const char *const request_str = json_string_value(request);
+	if (request_str == NULL) {
 		PUSH_ERROR(400, "Request not a string");
 		goto ok_wait;
 	}
-	// JLOG_INFO("main", "Message: %s", request_str);
+	// US_JLOG_INFO("main", "Message: %s", request_str);
 
-#	define PUSH_STATUS(_status, _jsep) { \
-			json_t *_event = json_object(); \
-			json_object_set_new(_event, "ustreamer", json_string("event")); \
-			json_t *_result = json_object(); \
-			json_object_set_new(_result, "status", json_string(_status)); \
-			json_object_set_new(_event, "result", _result); \
-			_g_gw->push_event(session, &_plugin, transaction, _event, _jsep); \
-			json_decref(_event); \
+#	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;
 		{
-			char *video_sdp = rtpv_make_sdp(_g_rtpv);
-			if (video_sdp == NULL) {
-				PUSH_ERROR(503, "Haven't received SPS/PPS from memsink yet");
-				goto ok_wait;
+			json_t *const params = json_object_get(msg, "params");
+			if (params != NULL) {
+				json_t *const audio = json_object_get(params, "audio");
+				if (audio != NULL && json_is_boolean(audio)) {
+					with_audio = (_g_rtpa != NULL && json_boolean_value(audio));
+				}
 			}
-			char *audio_sdp = (_g_rtpa ? rtpa_make_sdp(_g_rtpa) : strdup(""));
-			A_ASPRINTF(sdp,
+		}
+
+		{
+			char *sdp;
+			char *const video_sdp = us_rtpv_make_sdp(_g_rtpv);
+			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
 				"s=PiKVM uStreamer" RN
 				"t=0 0" RN
 				"%s%s",
-				get_now_id() >> 1, audio_sdp, video_sdp
+				us_get_now_id() >> 1,
+#				if JANUS_PLUGIN_API_VERSION >= 100
+				// Place video SDP before audio SDP so that the video and audio streams
+				// have predictable indices, even if audio is not available.
+				// See also client.c.
+				video_sdp, audio_sdp
+#				else
+				// For versions of Janus prior to 1.x, place the audio SDP first.
+				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 *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);
+				}
+				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");
+		atomic_store(&_g_key_required, true);
 
 	} else {
 		PUSH_ERROR(405, "Not implemented");
@@ -602,6 +498,55 @@ static struct janus_plugin_result *_plugin_handle_message(
 		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) {
+	if (packet->video && janus_rtcp_has_pli(packet->buffer, packet->length)) {
+		// US_JLOG_INFO("main", "Got video PLI");
+		atomic_store(&_g_key_required, true);
+	}
+}
+
+
+// ***** Plugin *****
+
+static int _plugin_get_api_compatibility(void)		{ return JANUS_PLUGIN_API_VERSION; }
+static int _plugin_get_version(void)				{ return US_VERSION_U; }
+static const char *_plugin_get_version_string(void)	{ return US_VERSION; }
+static const char *_plugin_get_description(void)	{ return "PiKVM uStreamer Janus plugin for H.264 video"; }
+static const char *_plugin_get_name(void)			{ return US_PLUGIN_NAME; }
+static const char *_plugin_get_author(void)			{ return "Maxim Devaev <mdevaev@gmail.com>"; }
+static const char *_plugin_get_package(void)		{ return US_PLUGIN_PACKAGE; }
+
+janus_plugin *create(void) {
+#	pragma GCC diagnostic push
+#	pragma GCC diagnostic ignored "-Woverride-init"
+	static janus_plugin plugin = JANUS_PLUGIN_INIT(
+		.init = _plugin_init,
+		.destroy = _plugin_destroy,
+
+		.create_session = _plugin_create_session,
+		.destroy_session = _plugin_destroy_session,
+		.query_session = _plugin_query_session,
+
+		.setup_media = _plugin_setup_media,
+		.hangup_media = _plugin_hangup_media,
+
+		.handle_message = _plugin_handle_message,
+
+		.get_api_compatibility = _plugin_get_api_compatibility,
+		.get_version = _plugin_get_version,
+		.get_version_string = _plugin_get_version_string,
+		.get_description = _plugin_get_description,
+		.get_name = _plugin_get_name,
+		.get_author = _plugin_get_author,
+		.get_package = _plugin_get_package,
+
+		.incoming_rtcp = _plugin_incoming_rtcp,
+	);
+#	pragma GCC diagnostic pop
+	return &plugin;
+}

janus/src/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    #
@@ -23,12 +23,12 @@
 #include "queue.h"
 
 
-queue_s *queue_init(unsigned capacity) {
-	queue_s *queue;
-	A_CALLOC(queue, 1);
-	A_CALLOC(queue->items, capacity);
+us_queue_s *us_queue_init(unsigned capacity) {
+	us_queue_s *queue;
+	US_CALLOC(queue, 1);
+	US_CALLOC(queue->items, capacity);
 	queue->capacity = capacity;
-	A_MUTEX_INIT(&queue->mutex);
+	US_MUTEX_INIT(queue->mutex);
 
 	pthread_condattr_t attrs;
 	assert(!pthread_condattr_init(&attrs));
@@ -39,54 +39,64 @@ queue_s *queue_init(unsigned capacity) {
 	return queue;
 }
 
-void queue_destroy(queue_s *queue) {
+void us_queue_destroy(us_queue_s *queue) {
+	US_COND_DESTROY(queue->empty_cond);
+	US_COND_DESTROY(queue->full_cond);
+	US_MUTEX_DESTROY(queue->mutex);
 	free(queue->items);
 	free(queue);
 }
 
-#define WAIT_OR_UNLOCK(_var, _cond) { \
-		struct timespec ts; \
-		assert(!clock_gettime(CLOCK_MONOTONIC, &ts)); \
-		ts.tv_sec += timeout; \
-		while (_var) { \
-			int err = pthread_cond_timedwait(_cond, &queue->mutex, &ts); \
+#define _WAIT_OR_UNLOCK(x_var, x_cond) { \
+		struct timespec m_ts; \
+		assert(!clock_gettime(CLOCK_MONOTONIC, &m_ts)); \
+		us_ld_to_timespec(us_timespec_to_ld(&m_ts) + timeout, &m_ts); \
+		while (x_var) { \
+			const int err = pthread_cond_timedwait(&(x_cond), &queue->mutex, &m_ts); \
 			if (err == ETIMEDOUT) { \
-				A_MUTEX_UNLOCK(&queue->mutex); \
+				US_MUTEX_UNLOCK(queue->mutex); \
 				return -1; \
 			} \
 			assert(!err); \
 		} \
 	}
 
-int queue_put(queue_s *queue, void *item, unsigned timeout) {
-	A_MUTEX_LOCK(&queue->mutex);
-	WAIT_OR_UNLOCK(queue->size == queue->capacity, &queue->full_cond);
+int us_queue_put(us_queue_s *queue, void *item, long double timeout) {
+	US_MUTEX_LOCK(queue->mutex);
+	if (timeout == 0) {
+		if (queue->size == queue->capacity) {
+			US_MUTEX_UNLOCK(queue->mutex);
+			return -1;
+		}
+	} else {
+		_WAIT_OR_UNLOCK(queue->size == queue->capacity, queue->full_cond);
+	}
 	queue->items[queue->in] = item;
 	++queue->size;
 	++queue->in;
 	queue->in %= queue->capacity;
-	A_MUTEX_UNLOCK(&queue->mutex);
-	assert(!pthread_cond_broadcast(&queue->empty_cond));
+	US_MUTEX_UNLOCK(queue->mutex);
+	US_COND_BROADCAST(queue->empty_cond);
 	return 0;
 }
 
-int queue_get(queue_s *queue, void **item, unsigned timeout) {
-	A_MUTEX_LOCK(&queue->mutex);
-	WAIT_OR_UNLOCK(queue->size == 0, &queue->empty_cond);
+int us_queue_get(us_queue_s *queue, void **item, long double timeout) {
+	US_MUTEX_LOCK(queue->mutex);
+	_WAIT_OR_UNLOCK(queue->size == 0, queue->empty_cond);
 	*item = queue->items[queue->out];
 	--queue->size;
 	++queue->out;
 	queue->out %= queue->capacity;
-	A_MUTEX_UNLOCK(&queue->mutex);
-	assert(!pthread_cond_broadcast(&queue->full_cond));
+	US_MUTEX_UNLOCK(queue->mutex);
+	US_COND_BROADCAST(queue->full_cond);
 	return 0;
 }
 
-#undef WAIT_OR_UNLOCK
+#undef _WAIT_OR_UNLOCK
 
-int queue_get_free(queue_s *queue) {
-	A_MUTEX_LOCK(&queue->mutex);
-	unsigned size = queue->size;
-	A_MUTEX_UNLOCK(&queue->mutex);
+int us_queue_get_free(us_queue_s *queue) {
+	US_MUTEX_LOCK(queue->mutex);
+	const unsigned size = queue->size;
+	US_MUTEX_UNLOCK(queue->mutex);
 	return queue->capacity - size;
 }

janus/src/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    #
@@ -24,6 +24,7 @@
 
 #include <errno.h>
 #include <time.h>
+#include <assert.h>
 
 #include <pthread.h>
 
@@ -43,12 +44,25 @@ typedef struct {
 	pthread_mutex_t	mutex;
 	pthread_cond_t	full_cond;
 	pthread_cond_t	empty_cond;
-} queue_s;
+} us_queue_s;
 
 
-queue_s *queue_init(unsigned capacity);
-void queue_destroy(queue_s *queue);
+#define US_QUEUE_DELETE_WITH_ITEMS(x_queue, x_free_item) { \
+		if (x_queue) { \
+			while (!us_queue_get_free(x_queue)) { \
+				void *m_ptr; \
+				if (!us_queue_get(x_queue, &m_ptr, 0)) { \
+					US_DELETE(m_ptr, x_free_item); \
+				} \
+			} \
+			us_queue_destroy(x_queue); \
+		} \
+	}
 
-int queue_put(queue_s *queue, void *item, unsigned timeout);
-int queue_get(queue_s *queue, void **item, unsigned timeout);
-int queue_get_free(queue_s *queue);
+
+us_queue_s *us_queue_init(unsigned 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);

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    #
@@ -26,20 +26,27 @@
 #include "rtp.h"
 
 
-rtp_s *rtp_init(unsigned payload, bool video) {
-	rtp_s *rtp;
-	A_CALLOC(rtp, 1);
+us_rtp_s *us_rtp_init(unsigned payload, bool video) {
+	us_rtp_s *rtp;
+	US_CALLOC(rtp, 1);
 	rtp->payload = payload;
 	rtp->video = video;
-	rtp->ssrc = triple_u32(get_now_monotonic_u64());
+	rtp->ssrc = us_triple_u32(us_get_now_monotonic_u64());
 	return rtp;
 }
 
-void rtp_destroy(rtp_s *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 rtp_write_header(rtp_s *rtp, uint32_t pts, bool marked) {
+void us_rtp_write_header(us_rtp_s *rtp, uint32_t pts, bool marked) {
 	uint32_t word0 = 0x80000000;
 	if (marked) {
 		word0 |= 1 << 23;

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    #
@@ -32,8 +32,8 @@
 
 
 // https://stackoverflow.com/questions/47635545/why-webrtc-chose-rtp-max-packet-size-to-1200-bytes
-#define RTP_DATAGRAM_SIZE	1200
-#define RTP_HEADER_SIZE		12
+#define US_RTP_DATAGRAM_SIZE	1200
+#define US_RTP_HEADER_SIZE		12
 
 
 typedef struct {
@@ -42,14 +42,16 @@ typedef struct {
 	uint32_t	ssrc;
 
 	uint16_t	seq;
-	uint8_t		datagram[RTP_DATAGRAM_SIZE];
+	uint8_t		datagram[US_RTP_DATAGRAM_SIZE];
 	size_t		used;
-} rtp_s;
+	bool		zero_playout_delay;
+} us_rtp_s;
 
-typedef void (*rtp_callback_f)(const rtp_s *rtp);
+typedef void (*us_rtp_callback_f)(const us_rtp_s *rtp);
 
 
-rtp_s *rtp_init(unsigned payload, bool video);
-void rtp_destroy(rtp_s *rtp);
+us_rtp_s *us_rtp_init(unsigned payload, bool video);
+us_rtp_s *us_rtp_dup(const us_rtp_s *rtp);
+void us_rtp_destroy(us_rtp_s *rtp);
 
-void rtp_write_header(rtp_s *rtp, uint32_t pts, bool marked);
+void us_rtp_write_header(us_rtp_s *rtp, uint32_t 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    #
@@ -23,23 +23,23 @@
 #include "rtpa.h"
 
 
-rtpa_s *rtpa_init(rtp_callback_f callback) {
-	rtpa_s *rtpa;
-	A_CALLOC(rtpa, 1);
-	rtpa->rtp = rtp_init(111, false);
+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);
 	rtpa->callback = callback;
 	return rtpa;
 }
 
-void rtpa_destroy(rtpa_s *rtpa) {
-	rtp_destroy(rtpa->rtp);
+void us_rtpa_destroy(us_rtpa_s *rtpa) {
+	us_rtp_destroy(rtpa->rtp);
 	free(rtpa);
 }
 
-char *rtpa_make_sdp(rtpa_s *rtpa) {
+char *us_rtpa_make_sdp(us_rtpa_s *rtpa) {
 #	define PAYLOAD rtpa->rtp->payload
 	char *sdp;
-	A_ASPRINTF(sdp,
+	US_ASPRINTF(sdp,
 		"m=audio 1 RTP/SAVPF %u" RN
 		"c=IN IP4 0.0.0.0" RN
 		"a=rtpmap:%u OPUS/48000/2" RN
@@ -56,11 +56,11 @@ char *rtpa_make_sdp(rtpa_s *rtpa) {
 	return sdp;
 }
 
-void rtpa_wrap(rtpa_s *rtpa, const uint8_t *data, size_t size, uint32_t pts) {
-    if (size + RTP_HEADER_SIZE <= RTP_DATAGRAM_SIZE) {
-        rtp_write_header(rtpa->rtp, pts, false);
-        memcpy(rtpa->rtp->datagram + RTP_HEADER_SIZE, data, size);
-		rtpa->rtp->used = size + RTP_HEADER_SIZE;
+void us_rtpa_wrap(us_rtpa_s *rtpa, const uint8_t *data, size_t size, uint32_t 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);
+		rtpa->rtp->used = size + US_RTP_HEADER_SIZE;
         rtpa->callback(rtpa->rtp);
 	}
 }

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    #
@@ -36,13 +36,13 @@
 
 
 typedef struct {
-	rtp_s			*rtp;
-	rtp_callback_f	callback;
-} rtpa_s;
+	us_rtp_s			*rtp;
+	us_rtp_callback_f	callback;
+} us_rtpa_s;
 
 
-rtpa_s *rtpa_init(rtp_callback_f callback);
-void rtpa_destroy(rtpa_s *rtpa);
+us_rtpa_s *us_rtpa_init(us_rtp_callback_f callback);
+void us_rtpa_destroy(us_rtpa_s *rtpa);
 
-char *rtpa_make_sdp(rtpa_s *rtpa);
-void rtpa_wrap(rtpa_s *rtpa, const uint8_t *data, size_t size, uint32_t pts);
+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);

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    #
@@ -26,88 +26,64 @@
 #include "rtpv.h"
 
 
-void _rtpv_process_nalu(rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t pts, bool marked);
+void _rtpv_process_nalu(us_rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t pts, bool marked);
 
 static ssize_t _find_annexb(const uint8_t *data, size_t size);
 
 
-rtpv_s *rtpv_init(rtp_callback_f callback) {
-	rtpv_s *rtpv;
-	A_CALLOC(rtpv, 1);
-	rtpv->rtp = rtp_init(96, true);
+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);
 	rtpv->callback = callback;
-	rtpv->sps = frame_init();
-	rtpv->pps = frame_init();
-	A_MUTEX_INIT(&rtpv->mutex);
 	return rtpv;
 }
 
-void rtpv_destroy(rtpv_s *rtpv) {
-	A_MUTEX_DESTROY(&rtpv->mutex);
-	frame_destroy(rtpv->pps);
-	frame_destroy(rtpv->sps);
-	rtp_destroy(rtpv->rtp);
+void us_rtpv_destroy(us_rtpv_s *rtpv) {
+	us_rtp_destroy(rtpv->rtp);
 	free(rtpv);
 }
 
-char *rtpv_make_sdp(rtpv_s *rtpv) {
-	A_MUTEX_LOCK(&rtpv->mutex);
-
-	if (rtpv->sps->used == 0 || rtpv->pps->used == 0) {
-		A_MUTEX_UNLOCK(&rtpv->mutex);
-		return NULL;
-	}
-
-	char *sps = NULL;
-	char *pps = NULL;
-	base64_encode(rtpv->sps->data, rtpv->sps->used, &sps, NULL);
-	base64_encode(rtpv->pps->data, rtpv->pps->used, &pps, NULL);
-
-	A_MUTEX_UNLOCK(&rtpv->mutex);
-
+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
 	char *sdp;
-	A_ASPRINTF(sdp,
+	US_ASPRINTF(sdp,
 		"m=video 1 RTP/SAVPF %u" RN
 		"c=IN IP4 0.0.0.0" RN
 		"a=rtpmap:%u H264/90000" RN
 		"a=fmtp:%u profile-level-id=42E01F" RN
 		"a=fmtp:%u packetization-mode=1" RN
-		"a=fmtp:%u sprop-sps=%s" RN
-		"a=fmtp:%u sprop-pps=%s" RN
 		"a=rtcp-fb:%u nack" RN
 		"a=rtcp-fb:%u nack pli" RN
 		"a=rtcp-fb:%u goog-remb" RN
 		"a=ssrc:%" PRIu32 " cname:ustreamer" RN
+		"a=extmap:1 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay" RN
 		"a=sendonly" RN,
 		PAYLOAD, PAYLOAD, PAYLOAD, PAYLOAD,
-		PAYLOAD, sps,
-		PAYLOAD, pps,
 		PAYLOAD, PAYLOAD, PAYLOAD,
 		rtpv->rtp->ssrc
 	);
-#	undef PAYLOAD
-
-	free(sps);
-	free(pps);
 	return sdp;
+#	undef PAYLOAD
 }
 
-#define PRE 3 // Annex B prefix length
+#define _PRE 3 // Annex B prefix length
 
-void rtpv_wrap(rtpv_s *rtpv, const 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 = 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 uint32_t pts = us_get_now_monotonic_u64() * 9 / 100; // PTS units are in 90 kHz
+	ssize_t last_offset = -_PRE;
 
 	while (true) { // Find and iterate by nalus
-		const size_t next_start = last_offset + PRE;
+		const size_t next_start = last_offset + _PRE;
 		ssize_t offset = _find_annexb(frame->data + next_start, frame->used - next_start);
 		if (offset < 0) {
 			break;
@@ -115,8 +91,8 @@ void rtpv_wrap(rtpv_s *rtpv, const frame_s *frame) {
 		offset += next_start;
 
 		if (last_offset >= 0) {
-			const uint8_t *data = frame->data + last_offset + PRE;
-			size_t size = offset - last_offset - PRE;
+			const uint8_t *const data = frame->data + last_offset + _PRE;
+			size_t size = offset - last_offset - _PRE;
 			if (data[size - 1] == 0) { // Check for extra 00
 				--size;
 			}
@@ -127,53 +103,42 @@ void rtpv_wrap(rtpv_s *rtpv, const frame_s *frame) {
 	}
 
 	if (last_offset >= 0) {
-		const uint8_t *data = frame->data + last_offset + PRE;
-		size_t size = frame->used - last_offset - PRE;
+		const uint8_t *const data = frame->data + last_offset + _PRE;
+		size_t size = frame->used - last_offset - _PRE;
 		_rtpv_process_nalu(rtpv, data, size, pts, true);
 	}
 }
 
-void _rtpv_process_nalu(rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t pts, bool marked) {
+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;
 
-	frame_s *ps = NULL;
-	switch (type) {
-		case 7: ps = rtpv->sps; break;
-		case 8: ps = rtpv->pps; break;
-	}
-	if (ps) {
-		A_MUTEX_LOCK(&rtpv->mutex);
-		frame_set_data(ps, data, size);
-		A_MUTEX_UNLOCK(&rtpv->mutex);
-	}
-
-#	define DG rtpv->rtp->datagram
-
-	if (size + RTP_HEADER_SIZE <= RTP_DATAGRAM_SIZE) {
-		rtp_write_header(rtpv->rtp, pts, marked);
-		memcpy(DG + RTP_HEADER_SIZE, data, size);
-		rtpv->rtp->used = size + RTP_HEADER_SIZE;
+	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);
+		rtpv->rtp->used = size + US_RTP_HEADER_SIZE;
 		rtpv->callback(rtpv->rtp);
 		return;
 	}
 
-	const size_t fu_overhead = RTP_HEADER_SIZE + 2; // FU-A overhead
+	const size_t fu_overhead = US_RTP_HEADER_SIZE + 2; // FU-A overhead
 
 	const uint8_t *src = data + 1;
 	ssize_t remaining = size - 1;
 
 	bool first = true;
 	while (remaining > 0) {
-		ssize_t frag_size = RTP_DATAGRAM_SIZE - fu_overhead;
+		ssize_t frag_size = US_RTP_DATAGRAM_SIZE - fu_overhead;
 		const bool last = (remaining <= frag_size);
 		if (last) {
 			frag_size = remaining;
 		}
 
-		rtp_write_header(rtpv->rtp, pts, (marked && last));
+		us_rtp_write_header(rtpv->rtp, pts, (marked && last));
 
-		DG[RTP_HEADER_SIZE] = 28 | (ref_idc << 5);
+		DG[US_RTP_HEADER_SIZE] = 28 | (ref_idc << 5);
 
 		uint8_t fu = type;
 		if (first) {
@@ -182,7 +147,7 @@ void _rtpv_process_nalu(rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t
 		if (last) {
 			fu |= 0x40;
 		}
-		DG[RTP_HEADER_SIZE + 1] = fu;
+		DG[US_RTP_HEADER_SIZE + 1] = fu;
 
 		memcpy(DG + fu_overhead, src, frag_size);
 		rtpv->rtp->used = fu_overhead + frag_size;
@@ -198,8 +163,8 @@ void _rtpv_process_nalu(rtpv_s *rtpv, const uint8_t *data, size_t size, uint32_t
 
 static ssize_t _find_annexb(const uint8_t *data, size_t size) {
 	// Parses buffer for 00 00 01 start codes
-	if (size >= PRE) {
-		for (size_t index = 0; index <= size - PRE; ++index) {
+	if (size >= _PRE) {
+		for (size_t index = 0; index <= size - _PRE; ++index) {
 			if (data[index] == 0 && data[index + 1] == 0 && data[index + 2] == 1) {
 				return index;
 			}
@@ -208,4 +173,4 @@ static ssize_t _find_annexb(const uint8_t *data, size_t size) {
 	return -1;
 }
 
-#undef PRE
+#undef _PRE

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    #
@@ -31,27 +31,20 @@
 #include <sys/types.h>
 #include <linux/videodev2.h>
 
-#include <pthread.h>
-
 #include "uslibs/tools.h"
-#include "uslibs/threading.h"
 #include "uslibs/frame.h"
-#include "uslibs/base64.h"
 
 #include "rtp.h"
 
 
 typedef struct {
-	rtp_s			*rtp;
-	rtp_callback_f	callback;
-	frame_s			*sps; // Actually not a frame, just a bytes storage
-	frame_s			*pps;
-	pthread_mutex_t	mutex;
-} rtpv_s;
+	us_rtp_s			*rtp;
+	us_rtp_callback_f	callback;
+} us_rtpv_s;
 
 
-rtpv_s *rtpv_init(rtp_callback_f callback);
-void rtpv_destroy(rtpv_s *rtpv);
+us_rtpv_s *us_rtpv_init(us_rtp_callback_f callback);
+void us_rtpv_destroy(us_rtpv_s *rtpv);
 
-char *rtpv_make_sdp(rtpv_s *rtpv);
-void rtpv_wrap(rtpv_s *rtpv, const frame_s *frame);
+char *us_rtpv_make_sdp(us_rtpv_s *rtpv);
+void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame, bool zero_playout_delay);

janus/src/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    #
@@ -34,24 +34,24 @@
 #endif
 
 
-int tc358743_read_info(const char *path, tc358743_info_s *info) {
-	MEMSET_ZERO(*info);
+int us_tc358743_read_info(const char *path, us_tc358743_info_s *info) {
+	US_MEMSET_ZERO(*info);
 
 	int fd = -1;
 	if ((fd = open(path, O_RDWR)) < 0) {
-		JLOG_PERROR("audio", "Can't open TC358743 V4L2 device");
+		US_JLOG_PERROR("audio", "Can't open TC358743 V4L2 device");
 		return -1;
 	}
 
-#	define READ_CID(_cid, _field) { \
-			struct v4l2_control ctl = {0}; \
-			ctl.id = _cid; \
-			if (xioctl(fd, VIDIOC_G_CTRL, &ctl) < 0) { \
-				JLOG_PERROR("audio", "Can't get value of " #_cid); \
+#	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->_field = ctl.value; \
+			info->x_field = m_ctl.value; \
 		}
 
 	READ_CID(TC358743_CID_AUDIO_PRESENT,		has_audio);

janus/src/tc358743.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    #
@@ -34,13 +34,13 @@
 #include "uslibs/tools.h"
 #include "uslibs/xioctl.h"
 
-#include "jlogging.h"
+#include "logging.h"
 
 
 typedef struct {
 	bool		has_audio;
 	unsigned	audio_hz;
-} tc358743_info_s;
+} us_tc358743_info_s;
 
 
-int tc358743_read_info(const char *path, tc358743_info_s *info);
+int us_tc358743_read_info(const char *path, us_tc358743_info_s *info);

janus/src/uslibs/array.h

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

janus/src/uslibs/base64.c

@@ -1 +0,0 @@
-../../../src/libs/base64.c

janus/src/uslibs/base64.h

@@ -1 +0,0 @@
-../../../src/libs/base64.h

janus/src/uslibs/config.h

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

janus/src/uslibs/const.h

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

linters/Dockerfile

@@ -1,9 +1,9 @@
-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
 
-RUN echo "Server = http://mirror.yandex.ru/archlinux/\$repo/os/\$arch" > /etc/pacman.d/mirrorlist
+RUN echo 'Server = https://mirror.rackspace.com/archlinux/$repo/os/$arch' > /etc/pacman.d/mirrorlist
 
 RUN pacman -Syu --noconfirm \
 	&& pacman -S --needed --noconfirm \

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
+good-names = _, __, x, y, ws, make-html-h, make-jpeg-h, make-ico-h
 
 # Regular expression matching correct method names
 method-rgx = [a-z_][a-z0-9_]{2,50}$

linters/tox.ini

@@ -3,13 +3,12 @@ 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 \
@@ -23,30 +22,30 @@ commands = cppcheck \
 		src python/*.? janus/*.?
 
 [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 5.10" "January 2021"
+.TH USTREAMER-DUMP 1 "version 5.46" "January 2021"
 
 .SH NAME
 ustreamer-dump \- Dump uStreamer's memory sink to file
@@ -44,6 +44,9 @@ Limit the number of frames. Default: 0 (infinite).
 .TP
 .BR \-i ", "\-\-interval\ \fIsec
 Delay between reading frames (float). Default: 0.
+.TP
+.BR \-k ", " \-\-key\-required
+Request keyframe from the sink. Default: disabled.
 
 .SS "Logging options"
 .TP

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 5.10" "November 2020"
+.TH USTREAMER 1 "version 5.46" "November 2020"
 
 .SH NAME
 ustreamer \- stream MJPEG video from any V4L2 device to the network
@@ -10,7 +10,7 @@ ustreamer \- stream MJPEG video from any V4L2 device to the network
 .RI [OPTIONS]
 
 .SH DESCRIPTION
-µStreamer (\fBustreamer\fP) is a lightweight and very quick server to stream MJPEG video from any V4L2 device to the network. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc. µStreamer is a part of the Pi-KVM project designed to stream VGA and HDMI screencast hardware data with the highest resolution and FPS possible.
+µStreamer (\fBustreamer\fP) is a lightweight and very quick server to stream MJPEG video from any V4L2 device to the network. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc. µStreamer is a part of the PiKVM project designed to stream VGA and HDMI screencast hardware data with the highest resolution and FPS possible.
 
 .SH USAGE
 Without arguments, \fBustreamer\fR will try to open \fB/dev/video0\fR with 640x480 resolution and start streaming on \fBhttp://127\.0\.0\.1:8080\fR\. You can override this behavior using parameters \fB\-\-device\fR, \fB\-\-host\fR and \fB\-\-port\fR\. For example, to stream to the world, run: \fBustreamer --device=/dev/video1 --host=0.0.0.0 --port=80\fR
@@ -203,6 +203,9 @@ Default: disabled.
 .BR \-\-allow\-origin\ \fIstr
 Set Access\-Control\-Allow\-Origin header. Default: disabled.
 .TP
+.BR \-\-instance\-id\ \fIstr
+A short string identifier to be displayed in the /state handle. It must satisfy regexp ^[a-zA-Z0-9\./+_-]*$. Default: an empty string.
+.TP
 .BR \-\-server\-timeout\ \fIsec
 Timeout for client connections. Default: 10.
 
@@ -245,7 +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=5.10
+pkgver=5.46
 pkgrel=1
 pkgdesc="Lightweight and fast MJPEG-HTTP streamer"
 url="https://github.com/pikvm/ustreamer"
@@ -22,8 +22,8 @@ if [ -e /usr/bin/python3 ]; then
 	makedepends+=(python-setuptools)
 fi
 if [ -e /usr/include/janus/plugins/plugin.h ];then
-	depends+=(janus-gateway-pikvm alsa-lib opus)
-	makedepends+=(janus-gateway-pikvm alsa-lib opus)
+	depends+=(janus-gateway alsa-lib opus)
+	makedepends+=(janus-gateway alsa-lib opus)
 	_options="$_options WITH_JANUS=1"
 fi
 

pkg/docker/Dockerfile.alpine

@@ -0,0 +1,34 @@
+FROM alpine:3.16 as build
+RUN apk add --no-cache \
+		alpine-sdk \
+		linux-headers \
+		libjpeg-turbo-dev \
+		libevent-dev \
+		libbsd-dev \
+		libgpiod-dev
+
+WORKDIR /build/ustreamer/
+COPY . .
+RUN make -j5 WITH_GPIO=1
+
+FROM alpine:3.16 as run
+
+RUN apk add --no-cache \
+		libevent \
+		libjpeg-turbo \
+		libevent \
+		libgpiod \
+		libbsd \
+		v4l-utils
+
+WORKDIR /ustreamer
+COPY --from=build /build/ustreamer/src/ustreamer.bin ustreamer
+
+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
+ENTRYPOINT ["/entry.sh"]
+CMD ["--dv-timings", "--format", "UYVY"]
+
+# vim: syntax=dockerfile

pkg/docker/entry.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -e
+
+[ -n "$EDID" ] && {
+	[ -n "$EDID_HEX" ] && echo "$EDID_HEX" > /edid.hex
+	while true; do
+		v4l2-ctl --device=/dev/video0 --set-edid=file=/edid.hex --fix-edid-checksums --info-edid && break
+		echo 'Failed to set EDID. Reetrying...'
+		sleep 1
+	done
+}
+
+./ustreamer --host=0.0.0.0 $@

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=5.10
+PKG_VERSION:=5.46
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 

python/Makefile

@@ -17,4 +17,4 @@ install:
 
 
 clean:
-	rm -rf build
+	rm -rf build ustreamer.egg-info

python/setup.py

@@ -1,14 +1,12 @@
 import os
 
-from typing import List
-
 from setuptools import Extension
 from setuptools import setup
 
 
 # =====
-def _find_sources(suffix: str) -> List[str]:
-    sources: List[str] = []
+def _find_sources(suffix: str) -> list[str]:
+    sources: list[str] = []
     for (root_path, _, names) in os.walk("src"):
         for name in names:
             if name.endswith(suffix):
@@ -19,7 +17,7 @@ def _find_sources(suffix: str) -> List[str]:
 if __name__ == "__main__":
     setup(
         name="ustreamer",
-        version="5.10",
+        version="5.46",
         description="uStreamer tools",
         author="Maxim Devaev",
         author_email="mdevaev@gmail.com",

python/src/ustreamer.c

@@ -27,34 +27,34 @@ typedef struct {
 	double	drop_same_frames;
 
 	int					fd;
-	memsink_shared_s	*mem;
+	us_memsink_shared_s	*mem;
 
-	uint64_t	frame_id;
-	long double	frame_ts;
-	frame_s		*frame;
-} MemsinkObject;
+	uint64_t		frame_id;
+	long double		frame_ts;
+	us_frame_s		*frame;
+} _MemsinkObject;
 
 
-#define MEM(_next)		self->mem->_next
-#define FRAME(_next)	self->frame->_next
+#define _MEM(x_next)	self->mem->x_next
+#define _FRAME(x_next)	self->frame->x_next
 
 
-static void MemsinkObject_destroy_internals(MemsinkObject *self) {
+static void _MemsinkObject_destroy_internals(_MemsinkObject *self) {
 	if (self->mem != NULL) {
-		memsink_shared_unmap(self->mem);
+		us_memsink_shared_unmap(self->mem);
 		self->mem = NULL;
 	}
-	if (self->fd > 0) {
+	if (self->fd >= 0) {
 		close(self->fd);
 		self->fd = -1;
 	}
-	if (self->frame) {
-		frame_destroy(self->frame);
+	if (self->frame != NULL) {
+		us_frame_destroy(self->frame);
 		self->frame = NULL;
 	}
 }
 
-static int MemsinkObject_init(MemsinkObject *self, PyObject *args, PyObject *kwargs) {
+static int _MemsinkObject_init(_MemsinkObject *self, PyObject *args, PyObject *kwargs) {
 	self->lock_timeout = 1;
 	self->wait_timeout = 1;
 
@@ -78,14 +78,14 @@ static int MemsinkObject_init(MemsinkObject *self, PyObject *args, PyObject *kwa
 
 #	undef SET_DOUBLE
 
-	self->frame = frame_init();
+	self->frame = us_frame_init();
 
 	if ((self->fd = shm_open(self->obj, O_RDWR, 0)) == -1) {
 		PyErr_SetFromErrno(PyExc_OSError);
 		goto error;
 	}
 
-	if ((self->mem = memsink_shared_map(self->fd)) == NULL) {
+	if ((self->mem = us_memsink_shared_map(self->fd)) == NULL) {
 		PyErr_SetFromErrno(PyExc_OSError);
 		goto error;
 	}
@@ -93,37 +93,37 @@ static int MemsinkObject_init(MemsinkObject *self, PyObject *args, PyObject *kwa
 	return 0;
 
 	error:
-		MemsinkObject_destroy_internals(self);
+		_MemsinkObject_destroy_internals(self);
 		return -1;
 }
 
-static PyObject *MemsinkObject_repr(MemsinkObject *self) {
+static PyObject *_MemsinkObject_repr(_MemsinkObject *self) {
 	char repr[1024];
 	snprintf(repr, 1023, "<Memsink(%s)>", self->obj);
 	return Py_BuildValue("s", repr);
 }
 
-static void MemsinkObject_dealloc(MemsinkObject *self) {
-	MemsinkObject_destroy_internals(self);
+static void _MemsinkObject_dealloc(_MemsinkObject *self) {
+	_MemsinkObject_destroy_internals(self);
 	PyObject_Del(self);
 }
 
-static PyObject *MemsinkObject_close(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
-	MemsinkObject_destroy_internals(self);
+static PyObject *_MemsinkObject_close(_MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+	_MemsinkObject_destroy_internals(self);
 	Py_RETURN_NONE;
 }
 
-static PyObject *MemsinkObject_enter(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+static PyObject *_MemsinkObject_enter(_MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
 	Py_INCREF(self);
 	return (PyObject *)self;
 }
 
-static PyObject *MemsinkObject_exit(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+static PyObject *_MemsinkObject_exit(_MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
 	return PyObject_CallMethod((PyObject *)self, "close", "");
 }
 
-static int wait_frame(MemsinkObject *self) {
-	long double deadline_ts = get_now_monotonic() + self->wait_timeout;
+static int _wait_frame(_MemsinkObject *self) {
+	const long double deadline_ts = us_get_now_monotonic() + self->wait_timeout;
 
 #	define RETURN_OS_ERROR { \
 			Py_BLOCK_THREADS \
@@ -135,21 +135,21 @@ static int wait_frame(MemsinkObject *self) {
 	do {
 		Py_BEGIN_ALLOW_THREADS
 
-		int retval = flock_timedwait_monotonic(self->fd, self->lock_timeout);
-		now = get_now_monotonic();
+		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) == MEMSINK_MAGIC && MEM(version) == MEMSINK_VERSION && MEM(id) != self->frame_id) {
+			if (_MEM(magic) == US_MEMSINK_MAGIC && _MEM(version) == US_MEMSINK_VERSION && _MEM(id) != self->frame_id) {
 				if (self->drop_same_frames > 0) {
 					if (
-						FRAME_COMPARE_META_USED_NOTS(self->mem, self->frame)
+						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))
+						&& !memcmp(_FRAME(data), _MEM(data), _MEM(used))
 					) {
-						self->frame_id = MEM(id);
+						self->frame_id = _MEM(id);
 						goto drop;
 					}
 				}
@@ -181,23 +181,32 @@ static int wait_frame(MemsinkObject *self) {
 	return -2;
 }
 
-static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+static PyObject *_MemsinkObject_wait_frame(_MemsinkObject *self, PyObject *args, PyObject *kwargs) {
 	if (self->mem == NULL || self->fd <= 0) {
 		PyErr_SetString(PyExc_RuntimeError, "Closed");
 		return NULL;
 	}
 
-	switch (wait_frame(self)) {
+	bool key_required = false;
+	static char *kws[] = {"key_required", NULL};
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|p", kws, &key_required)) {
+		return NULL;
+	}
+
+	switch (_wait_frame(self)) {
 		case 0: break;
 		case -2: Py_RETURN_NONE;
 		default: return NULL;
 	}
 
-	frame_set_data(self->frame, MEM(data), MEM(used));
-	FRAME_COPY_META(self->mem, self->frame);
-	self->frame_id = MEM(id);
-	self->frame_ts = get_now_monotonic();
-	MEM(last_client_ts) = self->frame_ts;
+	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_ts = us_get_now_monotonic();
+	_MEM(last_client_ts) = self->frame_ts;
+	if (key_required) {
+		_MEM(key_requested) = true;
+	}
 
 	if (flock(self->fd, LOCK_UN) < 0) {
 		return PyErr_SetFromErrno(PyExc_OSError);
@@ -219,7 +228,7 @@ static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUS
 			} \
 			Py_DECREF(_tmp); \
 		}
-#	define SET_NUMBER(_key, _from, _to) SET_VALUE(#_key, Py##_to##_From##_from(FRAME(_key)))
+#	define SET_NUMBER(_key, _from, _to) SET_VALUE(#_key, Py##_to##_From##_from(_FRAME(_key)))
 
 	SET_NUMBER(width, Long, Long);
 	SET_NUMBER(height, Long, Long);
@@ -227,10 +236,11 @@ static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUS
 	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 *)_FRAME(data), _FRAME(used)));
 
 #	undef SET_NUMBER
 #	undef SET_VALUE
@@ -238,12 +248,12 @@ static PyObject *MemsinkObject_wait_frame(MemsinkObject *self, PyObject *Py_UNUS
 	return dict_frame;
 }
 
-static PyObject *MemsinkObject_is_opened(MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
+static PyObject *_MemsinkObject_is_opened(_MemsinkObject *self, PyObject *Py_UNUSED(ignored)) {
 	return PyBool_FromLong(self->mem != NULL && self->fd > 0);
 }
 
 #define FIELD_GETTER(_field, _from, _to) \
-	static PyObject *MemsinkObject_getter_##_field(MemsinkObject *self, void *Py_UNUSED(closure)) { \
+	static PyObject *_MemsinkObject_getter_##_field(_MemsinkObject *self, void *Py_UNUSED(closure)) { \
 		return Py##_to##_From##_from(self->_field); \
 	}
 
@@ -254,20 +264,20 @@ FIELD_GETTER(drop_same_frames, Double, Float)
 
 #undef FIELD_GETTER
 
-static PyMethodDef MemsinkObject_methods[] = {
+static PyMethodDef _MemsinkObject_methods[] = {
 #	define ADD_METHOD(_name, _method, _flags) \
-		{.ml_name = _name, .ml_meth = (PyCFunction)MemsinkObject_##_method, .ml_flags = (_flags)}
+		{.ml_name = _name, .ml_meth = (PyCFunction)_MemsinkObject_##_method, .ml_flags = (_flags)}
 	ADD_METHOD("close", close, METH_NOARGS),
 	ADD_METHOD("__enter__", enter, METH_NOARGS),
 	ADD_METHOD("__exit__", exit, METH_VARARGS),
-	ADD_METHOD("wait_frame", wait_frame, METH_NOARGS),
+	ADD_METHOD("wait_frame", wait_frame, METH_VARARGS | METH_KEYWORDS),
 	ADD_METHOD("is_opened", is_opened, METH_NOARGS),
 	{},
 #	undef ADD_METHOD
 };
 
-static PyGetSetDef MemsinkObject_getsets[] = {
-#	define ADD_GETTER(_field) {.name = #_field, .get = (getter)MemsinkObject_getter_##_field}
+static PyGetSetDef _MemsinkObject_getsets[] = {
+#	define ADD_GETTER(_field) {.name = #_field, .get = (getter)_MemsinkObject_getter_##_field}
 	ADD_GETTER(obj),
 	ADD_GETTER(lock_timeout),
 	ADD_GETTER(wait_timeout),
@@ -276,43 +286,40 @@ static PyGetSetDef MemsinkObject_getsets[] = {
 #	undef ADD_GETTER
 };
 
-static PyTypeObject MemsinkType = {
+static PyTypeObject _MemsinkType = {
 	PyVarObject_HEAD_INIT(NULL, 0)
 	.tp_name		= "ustreamer.Memsink",
-	.tp_basicsize	= sizeof(MemsinkObject),
+	.tp_basicsize	= sizeof(_MemsinkObject),
 	.tp_flags		= Py_TPFLAGS_DEFAULT,
 	.tp_new			= PyType_GenericNew,
-	.tp_init		= (initproc)MemsinkObject_init,
-	.tp_dealloc		= (destructor)MemsinkObject_dealloc,
-	.tp_repr		= (reprfunc)MemsinkObject_repr,
-	.tp_methods		= MemsinkObject_methods,
-	.tp_getset		= MemsinkObject_getsets,
+	.tp_init		= (initproc)_MemsinkObject_init,
+	.tp_dealloc		= (destructor)_MemsinkObject_dealloc,
+	.tp_repr		= (reprfunc)_MemsinkObject_repr,
+	.tp_methods		= _MemsinkObject_methods,
+	.tp_getset		= _MemsinkObject_getsets,
 };
 
-static PyModuleDef ustreamer_Module = {
+static PyModuleDef _Module = {
 	PyModuleDef_HEAD_INIT,
 	.m_name = "ustreamer",
 	.m_size = -1,
 };
 
 PyMODINIT_FUNC PyInit_ustreamer(void) { // cppcheck-suppress unusedFunction
-	PyObject *module = PyModule_Create(&ustreamer_Module);
+	PyObject *module = PyModule_Create(&_Module);
 	if (module == NULL) {
 		return NULL;
 	}
 
-	if (PyType_Ready(&MemsinkType) < 0) {
+	if (PyType_Ready(&_MemsinkType) < 0) {
 		return NULL;
 	}
 
-	Py_INCREF(&MemsinkType);
+	Py_INCREF(&_MemsinkType);
 
-	if (PyModule_AddObject(module, "Memsink", (PyObject *)&MemsinkType) < 0) {
+	if (PyModule_AddObject(module, "Memsink", (PyObject *)&_MemsinkType) < 0) {
 		return NULL;
 	}
 
 	return module;
 }
-
-#undef FRAME
-#undef MEM

src/Makefile

@@ -23,7 +23,7 @@ _USTR_SRCS = $(shell ls \
 	ustreamer/data/*.c \
 	ustreamer/encoders/cpu/*.c \
 	ustreamer/encoders/hw/*.c \
-	ustreamer/h264/*.c \
+	ustreamer/*.c \
 )
 
 _DUMP_LIBS = $(_COMMON_LIBS)

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    #
@@ -23,17 +23,17 @@
 #include "file.h"
 
 
-output_file_s *output_file_init(const char *path, bool json) {
-	output_file_s *output;
-	A_CALLOC(output, 1);
+us_output_file_s *us_output_file_init(const char *path, bool json) {
+	us_output_file_s *output;
+	US_CALLOC(output, 1);
 
 	if (!strcmp(path, "-")) {
-		LOG_INFO("Using output: <stdout>");
+		US_LOG_INFO("Using output: <stdout>");
 		output->fp = stdout;
 	} else {
-		LOG_INFO("Using output: %s", path);
+		US_LOG_INFO("Using output: %s", path);
 		if ((output->fp = fopen(path, "wb")) == NULL) {
-			LOG_PERROR("Can't open output file");
+			US_LOG_PERROR("Can't open output file");
 			goto error;
 		}
 	}
@@ -42,21 +42,21 @@ output_file_s *output_file_init(const char *path, bool json) {
 	return output;
 
 	error:
-		output_file_destroy(output);
+		us_output_file_destroy(output);
 		return NULL;
 }
 
-void output_file_write(void *v_output, const frame_s *frame) {
-	output_file_s *output = (output_file_s *)v_output;
+void us_output_file_write(void *v_output, const us_frame_s *frame) {
+	us_output_file_s *output = (us_output_file_s *)v_output;
 	if (output->json) {
-		base64_encode(frame->data, frame->used, &output->base64_data, &output->base64_allocated);
+		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,"
+			" \"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->format, frame->stride, frame->online, frame->key, frame->gop,
 			frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts,
 			output->base64_data);
 	} else {
@@ -65,14 +65,12 @@ void output_file_write(void *v_output, const frame_s *frame) {
 	fflush(output->fp);
 }
 
-void output_file_destroy(void *v_output) {
-	output_file_s *output = (output_file_s *)v_output;
-	if (output->base64_data) {
-		free(output->base64_data);
-	}
+void us_output_file_destroy(void *v_output) {
+	us_output_file_s *output = (us_output_file_s *)v_output;
+	US_DELETE(output->base64_data, free);
 	if (output->fp && output->fp != stdout) {
 		if (fclose(output->fp) < 0) {
-			LOG_PERROR("Can't close output file");
+			US_LOG_PERROR("Can't close output file");
 		}
 	}
 	free(output);

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    #
@@ -41,9 +41,9 @@ typedef struct {
 	FILE		*fp;
 	char		*base64_data;
 	size_t		base64_allocated;
-} output_file_s;
+} us_output_file_s;
 
 
-output_file_s *output_file_init(const char *path, bool json);
-void output_file_write(void *v_output, const frame_s *frame);
-void output_file_destroy(void *v_output);
+us_output_file_s *us_output_file_init(const char *path, bool json);
+void us_output_file_write(void *v_output, const us_frame_s *frame);
+void us_output_file_destroy(void *v_output);

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    #
@@ -31,7 +31,7 @@
 #include <errno.h>
 #include <assert.h>
 
-#include "../libs/config.h"
+#include "../libs/const.h"
 #include "../libs/tools.h"
 #include "../libs/logging.h"
 #include "../libs/frame.h"
@@ -48,6 +48,7 @@ enum _OPT_VALUES {
 	_O_OUTPUT_JSON = 'j',
 	_O_COUNT = 'c',
 	_O_INTERVAL = 'i',
+	_O_KEY_REQUIRED = 'k',
 
 	_O_HELP = 'h',
 	_O_VERSION = 'v',
@@ -67,6 +68,7 @@ static const struct option _LONG_OPTS[] = {
 	{"output-json",			no_argument,		NULL,	_O_OUTPUT_JSON},
 	{"count",				required_argument,	NULL,	_O_COUNT},
 	{"interval",			required_argument,	NULL,	_O_INTERVAL},
+	{"key-required",		no_argument,		NULL,	_O_KEY_REQUIRED},
 
 	{"log-level",			required_argument,	NULL,	_O_LOG_LEVEL},
 	{"perf",				no_argument,		NULL,	_O_PERF},
@@ -82,12 +84,12 @@ static const struct option _LONG_OPTS[] = {
 };
 
 
-volatile bool global_stop = false;
+volatile bool _g_stop = false;
 
 
 typedef struct {
 	void *v_output;
-	void (*write)(void *v_output, const frame_s *frame);
+	void (*write)(void *v_output, const us_frame_s *frame);
 	void (*destroy)(void *v_output);
 } _output_context_s;
 
@@ -98,14 +100,15 @@ static void _install_signal_handlers(void);
 static int _dump_sink(
 	const char *sink_name, unsigned sink_timeout,
 	long long count, long double interval,
+	bool key_required,
 	_output_context_s *ctx);
 
 static void _help(FILE *fp);
 
 
 int main(int argc, char *argv[]) {
-	LOGGING_INIT;
-	A_THREAD_RENAME("main");
+	US_LOGGING_INIT;
+	US_THREAD_RENAME("main");
 
 	char *sink_name = NULL;
 	unsigned sink_timeout = 1;
@@ -113,6 +116,7 @@ int main(int argc, char *argv[]) {
 	bool output_json = false;
 	long long count = 0;
 	long double interval = 0;
+	bool key_required = false;
 
 #	define OPT_SET(_dest, _value) { \
 			_dest = _value; \
@@ -140,7 +144,7 @@ int main(int argc, char *argv[]) {
 		}
 
 	char short_opts[128];
-	build_short_options(_LONG_OPTS, short_opts, 128);
+	us_build_short_options(_LONG_OPTS, short_opts, 128);
 
 	for (int ch; (ch = getopt_long(argc, argv, short_opts, _LONG_OPTS, NULL)) >= 0;) {
 		switch (ch) {
@@ -150,16 +154,17 @@ int main(int argc, char *argv[]) {
 			case _O_OUTPUT_JSON:	OPT_SET(output_json, true);
 			case _O_COUNT:			OPT_NUMBER("--count", count, 0, LLONG_MAX, 0);
 			case _O_INTERVAL:		OPT_LDOUBLE("--interval", interval, 0, 60);
+			case _O_KEY_REQUIRED:	OPT_SET(key_required, true);
 
-			case _O_LOG_LEVEL:			OPT_NUMBER("--log-level", us_log_level, LOG_LEVEL_INFO, LOG_LEVEL_DEBUG, 0);
-			case _O_PERF:				OPT_SET(us_log_level, LOG_LEVEL_PERF);
-			case _O_VERBOSE:			OPT_SET(us_log_level, LOG_LEVEL_VERBOSE);
-			case _O_DEBUG:				OPT_SET(us_log_level, LOG_LEVEL_DEBUG);
-			case _O_FORCE_LOG_COLORS:	OPT_SET(us_log_colored, true);
-			case _O_NO_LOG_COLORS:		OPT_SET(us_log_colored, false);
+			case _O_LOG_LEVEL:			OPT_NUMBER("--log-level", us_g_log_level, US_LOG_LEVEL_INFO, US_LOG_LEVEL_DEBUG, 0);
+			case _O_PERF:				OPT_SET(us_g_log_level, US_LOG_LEVEL_PERF);
+			case _O_VERBOSE:			OPT_SET(us_g_log_level, US_LOG_LEVEL_VERBOSE);
+			case _O_DEBUG:				OPT_SET(us_g_log_level, US_LOG_LEVEL_DEBUG);
+			case _O_FORCE_LOG_COLORS:	OPT_SET(us_g_log_colored, true);
+			case _O_NO_LOG_COLORS:		OPT_SET(us_g_log_colored, false);
 
 			case _O_HELP:		_help(stdout); return 0;
-			case _O_VERSION:	puts(VERSION); return 0;
+			case _O_VERSION:	puts(US_VERSION); return 0;
 
 			case 0:		break;
 			default:	return 1;
@@ -178,15 +183,15 @@ int main(int argc, char *argv[]) {
 	_output_context_s ctx = {0};
 
 	if (output_path && output_path[0] != '\0') {
-		if ((ctx.v_output = (void *)output_file_init(output_path, output_json)) == NULL) {
+		if ((ctx.v_output = (void *)us_output_file_init(output_path, output_json)) == NULL) {
 			return 1;
 		}
-		ctx.write = output_file_write;
-		ctx.destroy = output_file_destroy;
+		ctx.write = us_output_file_write;
+		ctx.destroy = us_output_file_destroy;
 	}
 
 	_install_signal_handlers();
-	int retval = abs(_dump_sink(sink_name, sink_timeout, count, interval, &ctx));
+	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);
 	}
@@ -195,13 +200,10 @@ int main(int argc, char *argv[]) {
 
 
 static void _signal_handler(int signum) {
-	switch (signum) {
-		case SIGTERM:	LOG_INFO_NOLOCK("===== Stopping by SIGTERM ====="); break;
-		case SIGINT:	LOG_INFO_NOLOCK("===== Stopping by SIGINT ====="); break;
-		case SIGPIPE:	LOG_INFO_NOLOCK("===== Stopping by SIGPIPE ====="); break;
-		default:		LOG_INFO_NOLOCK("===== Stopping by %d =====", signum); break;
-	}
-	global_stop = true;
+	char *const name = us_signum_to_string(signum);
+	US_LOG_INFO_NOLOCK("===== Stopping by %s =====", name);
+	free(name);
+	_g_stop = true;
 }
 
 static void _install_signal_handlers(void) {
@@ -213,31 +215,32 @@ static void _install_signal_handlers(void) {
 	assert(!sigaddset(&sig_act.sa_mask, SIGTERM));
 	assert(!sigaddset(&sig_act.sa_mask, SIGPIPE));
 
-	LOG_DEBUG("Installing SIGINT handler ...");
+	US_LOG_DEBUG("Installing SIGINT handler ...");
 	assert(!sigaction(SIGINT, &sig_act, NULL));
 
-	LOG_DEBUG("Installing SIGTERM handler ...");
+	US_LOG_DEBUG("Installing SIGTERM handler ...");
 	assert(!sigaction(SIGTERM, &sig_act, NULL));
 
-	LOG_DEBUG("Installing SIGTERM handler ...");
+	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) {
 
 	if (count == 0) {
 		count = -1;
 	}
 
-	useconds_t interval_us = interval * 1000000;
+	const useconds_t interval_us = interval * 1000000;
 
-	frame_s *frame = frame_init();
-	memsink_s *sink = NULL;
+	us_frame_s *frame = us_frame_init();
+	us_memsink_s *sink = NULL;
 
-	if ((sink = memsink_init("input", sink_name, false, 0, false, 0, sink_timeout)) == NULL) {
+	if ((sink = us_memsink_init("input", sink_name, false, 0, false, 0, sink_timeout)) == NULL) {
 		goto error;
 	}
 
@@ -247,32 +250,36 @@ static int _dump_sink(
 
 	long double last_ts = 0;
 
-	while (!global_stop) {
-		int error = memsink_client_get(sink, frame);
+	while (!_g_stop) {
+		bool key_requested;
+		const int error = us_memsink_client_get(sink, frame, &key_requested, key_required);
 		if (error == 0) {
-			const long double now = get_now_monotonic();
-			const long long now_second = floor_ms(now);
+			key_required = false;
+
+			const long double now = us_get_now_monotonic();
+			const long long now_second = us_floor_ms(now);
 
 			char fourcc_str[8];
-			LOG_VERBOSE("Frame: size=%zu, res=%ux%u, fourcc=%s, stride=%u, online=%d, key=%d, latency=%.3Lf, diff=%.3Lf",
-				frame->used, frame->width, frame->height,
-				fourcc_to_string(frame->format, fourcc_str, 8),
-				frame->stride, frame->online, frame->key,
-				now - frame->grab_ts, (last_ts ? now - last_ts : 0));
+			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->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;
 
-			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;
 				fps_accum = 0;
 				fps_second = now_second;
-				LOG_PERF_FPS("A new second has come; captured_fps=%u", fps);
+				US_LOG_PERF_FPS("A new second has come; captured_fps=%u", fps);
 			}
 			fps_accum += 1;
 
-			if (ctx->v_output) {
+			if (ctx->v_output != NULL) {
 				ctx->write(ctx->v_output, frame);
 			}
 
@@ -300,12 +307,10 @@ static int _dump_sink(
 		retval = -1;
 
 	ok:
-		if (sink) {
-			memsink_destroy(sink);
-		}
-		frame_destroy(frame);
+		US_DELETE(sink, us_memsink_destroy);
+		us_frame_destroy(frame);
 
-		LOG_INFO("Bye-bye");
+		US_LOG_INFO("Bye-bye");
 		return retval;
 }
 
@@ -313,8 +318,8 @@ static void _help(FILE *fp) {
 #	define SAY(_msg, ...) fprintf(fp, _msg "\n", ##__VA_ARGS__)
 	SAY("\nuStreamer-dump - Dump uStreamer's memory sink to file");
 	SAY("═════════════════════════════════════════════════════");
-	SAY("Version: %s; license: GPLv3", VERSION);
-	SAY("Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com>\n");
+	SAY("Version: %s; license: GPLv3", US_VERSION);
+	SAY("Copyright (C) 2018-2023 Maxim Devaev <mdevaev@gmail.com>\n");
 	SAY("Example:");
 	SAY("════════");
 	SAY("    ustreamer-dump --sink test --output - \\");
@@ -327,12 +332,13 @@ static void _help(FILE *fp) {
 	SAY("    -j|--output-json  ──────── Format output as JSON. Required option --output. Default: disabled.\n");
 	SAY("    -c|--count  <N>  ───────── Limit the number of frames. Default: 0 (infinite).\n");
 	SAY("    -i|--interval <sec>  ───── Delay between reading frames (float). Default: 0.\n");
+	SAY("    -k|--key-required  ─────── Request keyframe from the sink. Default: disabled.\n");
 	SAY("Logging options:");
 	SAY("════════════════");
 	SAY("    --log-level <N>  ──── Verbosity level of messages from 0 (info) to 3 (debug).");
 	SAY("                          Enabling debugging messages can slow down the program.");
 	SAY("                          Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).");
-	SAY("                          Default: %d.\n", us_log_level);
+	SAY("                          Default: %d.\n", us_g_log_level);
 	SAY("    --perf  ───────────── Enable performance messages (same as --log-level=1). Default: disabled.\n");
 	SAY("    --verbose  ────────── Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n");
 	SAY("    --debug  ──────────── Enable debug messages and lower (same as --log-level=3). Default: disabled.\n");

src/libs/array.h

@@ -0,0 +1,37 @@
+/*****************************************************************************
+#                                                                            #
+#    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 <assert.h>
+
+
+#define US_ARRAY_LEN(x_array) (sizeof(x_array) / sizeof((x_array)[0]))
+
+#define US_ARRAY_ITERATE(x_array, x_start, x_item_ptr, ...) { \
+		const int m_len = US_ARRAY_LEN(x_array); \
+		assert(x_start <= m_len); \
+		for (int m_index = x_start; m_index < m_len; ++m_index) { \
+			__typeof__((x_array)[0]) *const x_item_ptr = &x_array[m_index]; \
+			__VA_ARGS__ \
+		} \
+	}

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    #
@@ -37,11 +37,11 @@ static const char _ENCODING_TABLE[] = {
 static const unsigned _MOD_TABLE[] = {0, 2, 1};
 
 
-void base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated) {
+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'
 
 	if (*encoded == NULL || (allocated && *allocated < encoded_size)) {
-		A_REALLOC(*encoded, encoded_size);
+		US_REALLOC(*encoded, encoded_size);
 		if (allocated) {
 			*allocated = encoded_size;
 		}
@@ -54,7 +54,7 @@ void base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *all
 		OCTET(octet_c);
 #		undef OCTET
 
-		unsigned triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
+		const unsigned triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
 
 #		define ENCODE(_offset) (*encoded)[encoded_index++] = _ENCODING_TABLE[(triple >> _offset * 6) & 0x3F]
 		ENCODE(3);

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    #
@@ -31,4 +31,4 @@
 #include "tools.h"
 
 
-void base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated);
+void us_base64_encode(const uint8_t *data, size_t size, char **encoded, size_t *allocated);

src/libs/const.h

@@ -0,0 +1,32 @@
+/*****************************************************************************
+#                                                                            #
+#    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
+
+#define US_VERSION_MAJOR 5
+#define US_VERSION_MINOR 46
+
+#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))

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    #
@@ -23,60 +23,59 @@
 #include "frame.h"
 
 
-frame_s *frame_init(void) {
-	frame_s *frame;
-	A_CALLOC(frame, 1);
-	frame_realloc_data(frame, 512 * 1024);
+us_frame_s *us_frame_init(void) {
+	us_frame_s *frame;
+	US_CALLOC(frame, 1);
+	us_frame_realloc_data(frame, 512 * 1024);
 	frame->dma_fd = -1;
 	return frame;
 }
 
-void frame_destroy(frame_s *frame) {
-	if (frame->data) {
-		free(frame->data);
-	}
+void us_frame_destroy(us_frame_s *frame) {
+	US_DELETE(frame->data, free);
 	free(frame);
 }
 
-void frame_realloc_data(frame_s *frame, size_t size) {
+void us_frame_realloc_data(us_frame_s *frame, size_t size) {
 	if (frame->allocated < size) {
-		A_REALLOC(frame->data, size);
+		US_REALLOC(frame->data, size);
 		frame->allocated = size;
 	}
 }
 
-void frame_set_data(frame_s *frame, const uint8_t *data, size_t size) {
-	frame_realloc_data(frame, size);
+void us_frame_set_data(us_frame_s *frame, const uint8_t *data, size_t size) {
+	us_frame_realloc_data(frame, size);
 	memcpy(frame->data, data, size);
 	frame->used = size;
 }
 
-void frame_append_data(frame_s *frame, const uint8_t *data, size_t size) {
-	size_t new_used = frame->used + size;
-	frame_realloc_data(frame, new_used);
+void us_frame_append_data(us_frame_s *frame, const uint8_t *data, size_t size) {
+	const size_t new_used = frame->used + size;
+	us_frame_realloc_data(frame, new_used);
 	memcpy(frame->data + frame->used, data, size);
 	frame->used = new_used;
 }
 
-void frame_copy(const frame_s *src, frame_s *dest) {
-	frame_set_data(dest, src->data, src->used);
-	FRAME_COPY_META(src, dest);
+void us_frame_copy(const us_frame_s *src, us_frame_s *dest) {
+	us_frame_set_data(dest, src->data, src->used);
+	US_FRAME_COPY_META(src, dest);
 }
 
-bool frame_compare(const frame_s *a, const frame_s *b) {
+bool us_frame_compare(const us_frame_s *a, const us_frame_s *b) {
 	return (
 		a->allocated && b->allocated
-		&& FRAME_COMPARE_META_USED_NOTS(a, b)
+		&& US_FRAME_COMPARE_META_USED_NOTS(a, b)
 		&& !memcmp(a->data, b->data, b->used)
 	);
 }
 
-unsigned frame_get_padding(const frame_s *frame) {
+unsigned us_frame_get_padding(const us_frame_s *frame) {
 	unsigned bytes_per_pixel = 0;
 	switch (frame->format) {
 		case V4L2_PIX_FMT_YUYV:
 		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:
@@ -89,7 +88,7 @@ unsigned frame_get_padding(const frame_s *frame) {
 	return 0;
 }
 
-const char *fourcc_to_string(unsigned format, char *buf, size_t size) {
+const char *us_fourcc_to_string(unsigned format, char *buf, size_t size) {
 	assert(size >= 8);
 	buf[0] = format & 0x7F;
 	buf[1] = (format >> 8) & 0x7F;

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    #
@@ -35,84 +35,87 @@
 
 
 typedef struct {
-	uint8_t	*data;
-	size_t	used;
-	size_t	allocated;
-	int		dma_fd;
+	uint8_t		*data;
+	size_t		used;
+	size_t		allocated;
+	int			dma_fd;
 
-	unsigned width;
-	unsigned height;
-	unsigned format;
-	unsigned stride;
+	unsigned	width;
+	unsigned	height;
+	unsigned	format;
+	unsigned	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;
+	bool		online;
+	bool		key;
+	unsigned	gop;
 
 	long double	grab_ts;
 	long double	encode_begin_ts;
 	long double	encode_end_ts;
-} frame_s;
+} us_frame_s;
 
 
-#define FRAME_COPY_META(_src, _dest) { \
-		_dest->width = _src->width; \
-		_dest->height = _src->height; \
-		_dest->format = _src->format; \
-		_dest->stride = _src->stride; \
-		_dest->online = _src->online; \
-		_dest->key = _src->key; \
-		_dest->grab_ts = _src->grab_ts; \
-		_dest->encode_begin_ts = _src->encode_begin_ts; \
-		_dest->encode_end_ts = _src->encode_end_ts; \
+#define US_FRAME_COPY_META(x_src, x_dest) { \
+		x_dest->width = x_src->width; \
+		x_dest->height = x_src->height; \
+		x_dest->format = x_src->format; \
+		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 frame_copy_meta(const frame_s *src, frame_s *dest) {
-	FRAME_COPY_META(src, dest);
+static inline void us_frame_copy_meta(const us_frame_s *src, us_frame_s *dest) {
+	US_FRAME_COPY_META(src, dest);
 }
 
-#define FRAME_COMPARE_META_USED_NOTS(_a, _b) ( \
-		_a->used == _b->used \
-		&& _a->width == _b->width \
-		&& _a->height == _b->height \
-		&& _a->format == _b->format \
-		&& _a->stride == _b->stride \
-		&& _a->online == _b->online \
-		&& _a->key == _b->key \
+#define US_FRAME_COMPARE_META_USED_NOTS(x_a, x_b) ( \
+		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 frame_encoding_begin(const frame_s *src, frame_s *dest, unsigned format) {
+static inline void us_frame_encoding_begin(const us_frame_s *src, us_frame_s *dest, unsigned format) {
 	assert(src->used > 0);
-	frame_copy_meta(src, dest);
-	dest->encode_begin_ts = get_now_monotonic();
+	us_frame_copy_meta(src, dest);
+	dest->encode_begin_ts = us_get_now_monotonic();
 	dest->format = format;
 	dest->stride = 0;
 	dest->used = 0;
 }
 
-static inline void frame_encoding_end(frame_s *dest) {
+static inline void us_frame_encoding_end(us_frame_s *dest) {
 	assert(dest->used > 0);
-	dest->encode_end_ts = get_now_monotonic();
+	dest->encode_end_ts = us_get_now_monotonic();
 }
 
 
-frame_s *frame_init(void);
-void frame_destroy(frame_s *frame);
+us_frame_s *us_frame_init(void);
+void us_frame_destroy(us_frame_s *frame);
 
-void frame_realloc_data(frame_s *frame, size_t size);
-void frame_set_data(frame_s *frame, const uint8_t *data, size_t size);
-void frame_append_data(frame_s *frame, const uint8_t *data, size_t size);
+void 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 frame_copy(const frame_s *src, frame_s *dest);
-bool frame_compare(const frame_s *a, const frame_s *b);
+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 frame_get_padding(const frame_s *frame);
+unsigned us_frame_get_padding(const us_frame_s *frame);
 
-const char *fourcc_to_string(unsigned format, char *buf, size_t size);
+const char *us_fourcc_to_string(unsigned format, char *buf, size_t size);
 
-static inline bool is_jpeg(unsigned format) {
+static inline bool us_is_jpeg(unsigned format) {
 	return (format == V4L2_PIX_FMT_JPEG || format == V4L2_PIX_FMT_MJPEG);
 }

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    #
@@ -25,47 +25,47 @@
 #include <assert.h>
 
 
-#define LIST_STRUCT(...) \
+#define US_LIST_STRUCT(...) \
 	__VA_ARGS__ *prev; \
 	__VA_ARGS__ *next;
 
-#define LIST_ITERATE(_first, _item, ...) { \
-		for (__typeof__(_first) _item = _first; _item;) { \
-			__typeof__(_first) _next = _item->next; \
+#define US_LIST_ITERATE(x_first, x_item, ...) { \
+		for (__typeof__(x_first) x_item = x_first; x_item;) { \
+			__typeof__(x_first) m_next = x_item->next; \
 			__VA_ARGS__ \
-			_item = _next; \
+			x_item = m_next; \
 		} \
 	}
 
-#define LIST_APPEND(_first, _item) { \
-		if (_first == NULL) { \
-			_first = _item; \
+#define US_LIST_APPEND(x_first, x_item) { \
+		if (x_first == NULL) { \
+			x_first = x_item; \
 		} else { \
-			__typeof__(_first) _last = _first; \
-			for (; _last->next; _last = _last->next); \
-			_item->prev = _last; \
-			_last->next = _item; \
+			__typeof__(x_first) m_last = x_first; \
+			for (; m_last->next; m_last = m_last->next); \
+			x_item->prev = m_last; \
+			m_last->next = x_item; \
 		} \
 	}
 
-#define LIST_APPEND_C(_first, _item, _count) { \
-		LIST_APPEND(_first, _item); \
-		++(_count); \
+#define US_LIST_APPEND_C(x_first, x_item, x_count) { \
+		US_LIST_APPEND(x_first, x_item); \
+		++(x_count); \
 	}
 
-#define LIST_REMOVE(_first, _item) { \
-		if (_item->prev == NULL) { \
-			_first = _item->next; \
+#define US_LIST_REMOVE(x_first, x_item) { \
+		if (x_item->prev == NULL) { \
+			x_first = x_item->next; \
 		} else { \
-			_item->prev->next = _item->next; \
+			x_item->prev->next = x_item->next; \
 		} \
-		if (_item->next != NULL) { \
-			_item->next->prev = _item->prev; \
+		if (x_item->next != NULL) { \
+			x_item->next->prev = x_item->prev; \
 		} \
 	}
 
-#define LIST_REMOVE_C(_first, _item, _count) { \
-		LIST_REMOVE(_first, _item); \
-		assert((_count) >= 1); \
-		--(_count); \
+#define US_LIST_REMOVE_C(x_first, x_item, x_count) { \
+		US_LIST_REMOVE(x_first, x_item); \
+		assert((x_count) >= 1); \
+		--(x_count); \
 	}

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    #
@@ -23,8 +23,8 @@
 #include "logging.h"
 
 
-enum log_level_t us_log_level;
+enum us_log_level_t us_g_log_level;
 
-bool us_log_colored;
+bool us_g_log_colored;
 
-pthread_mutex_t us_log_mutex;
+pthread_mutex_t us_g_log_mutex;

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    #
@@ -37,126 +37,126 @@
 #include "threading.h"
 
 
-enum log_level_t {
-    LOG_LEVEL_INFO,
-    LOG_LEVEL_PERF,
-    LOG_LEVEL_VERBOSE,
-    LOG_LEVEL_DEBUG,
+enum us_log_level_t {
+    US_LOG_LEVEL_INFO,
+    US_LOG_LEVEL_PERF,
+    US_LOG_LEVEL_VERBOSE,
+    US_LOG_LEVEL_DEBUG,
 };
 
 
-extern enum log_level_t us_log_level;
+extern enum us_log_level_t us_g_log_level;
 
-extern bool us_log_colored;
+extern bool us_g_log_colored;
 
-extern pthread_mutex_t us_log_mutex;
+extern pthread_mutex_t us_g_log_mutex;
 
 
-#define LOGGING_INIT { \
-		us_log_level = LOG_LEVEL_INFO; \
-		us_log_colored = isatty(2); \
-		A_MUTEX_INIT(&us_log_mutex); \
+#define US_LOGGING_INIT { \
+		us_g_log_level = US_LOG_LEVEL_INFO; \
+		us_g_log_colored = isatty(2); \
+		US_MUTEX_INIT(us_g_log_mutex); \
 	}
 
-#define LOGGING_DESTROY A_MUTEX_DESTROY(&us_log_mutex)
+#define US_LOGGING_DESTROY	US_MUTEX_DESTROY(us_g_log_mutex)
 
-#define LOGGING_LOCK	A_MUTEX_LOCK(&us_log_mutex)
-#define LOGGING_UNLOCK	A_MUTEX_UNLOCK(&us_log_mutex)
+#define US_LOGGING_LOCK		US_MUTEX_LOCK(us_g_log_mutex)
+#define US_LOGGING_UNLOCK	US_MUTEX_UNLOCK(us_g_log_mutex)
 
 
-#define COLOR_GRAY		"\x1b[30;1m"
-#define COLOR_RED		"\x1b[31;1m"
-#define COLOR_GREEN		"\x1b[32;1m"
-#define COLOR_YELLOW	"\x1b[33;1m"
-#define COLOR_BLUE		"\x1b[34;1m"
-#define COLOR_CYAN		"\x1b[36;1m"
-#define COLOR_RESET		"\x1b[0m"
+#define US_COLOR_GRAY		"\x1b[30;1m"
+#define US_COLOR_RED		"\x1b[31;1m"
+#define US_COLOR_GREEN		"\x1b[32;1m"
+#define US_COLOR_YELLOW		"\x1b[33;1m"
+#define US_COLOR_BLUE		"\x1b[34;1m"
+#define US_COLOR_CYAN		"\x1b[36;1m"
+#define US_COLOR_RESET		"\x1b[0m"
 
 
-#define SEP_INFO(_ch) { \
-		LOGGING_LOCK; \
-		for (int _i = 0; _i < 80; ++_i) { \
-			fputc(_ch, stderr); \
+#define US_SEP_INFO(x_ch) { \
+		US_LOGGING_LOCK; \
+		for (int m_count = 0; m_count < 80; ++m_count) { \
+			fputc((x_ch), stderr); \
 		} \
 		fputc('\n', stderr); \
 		fflush(stderr); \
-		LOGGING_UNLOCK; \
+		US_LOGGING_UNLOCK; \
 	}
 
-#define SEP_DEBUG(_ch) { \
-		if (us_log_level >= LOG_LEVEL_DEBUG) { \
-			SEP_INFO(_ch); \
+#define US_SEP_DEBUG(x_ch) { \
+		if (us_g_log_level >= US_LOG_LEVEL_DEBUG) { \
+			US_SEP_INFO(x_ch); \
 		} \
 	}
 
 
-#define LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ...) { \
-		char _tname_buf[MAX_THREAD_NAME] = {0}; \
-		thread_get_name(_tname_buf); \
-		if (us_log_colored) { \
-			fprintf(stderr, COLOR_GRAY "-- " _label_color _label COLOR_GRAY \
-				" [%.03Lf %9s]" " -- " COLOR_RESET _msg_color _msg COLOR_RESET, \
-				get_now_monotonic(), _tname_buf, ##__VA_ARGS__); \
+#define US_LOG_PRINTF_NOLOCK(x_label_color, x_label, x_msg_color, x_msg, ...) { \
+		char m_tname_buf[US_MAX_THREAD_NAME] = {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 \
+				" [%.03Lf %9s]" " -- " US_COLOR_RESET x_msg_color x_msg US_COLOR_RESET, \
+				us_get_now_monotonic(), m_tname_buf, ##__VA_ARGS__); \
 		} else { \
-			fprintf(stderr, "-- " _label " [%.03Lf %9s] -- " _msg, \
-				get_now_monotonic(), _tname_buf, ##__VA_ARGS__); \
+			fprintf(stderr, "-- " x_label " [%.03Lf %9s] -- " x_msg, \
+				us_get_now_monotonic(), m_tname_buf, ##__VA_ARGS__); \
 		} \
 		fputc('\n', stderr); \
 		fflush(stderr); \
 	}
 
-#define LOG_PRINTF(_label_color, _label, _msg_color, _msg, ...) { \
-		LOGGING_LOCK; \
-		LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ##__VA_ARGS__); \
-		LOGGING_UNLOCK; \
+#define US_LOG_PRINTF(x_label_color, x_label, x_msg_color, x_msg, ...) { \
+		US_LOGGING_LOCK; \
+		US_LOG_PRINTF_NOLOCK(x_label_color, x_label, x_msg_color, x_msg, ##__VA_ARGS__); \
+		US_LOGGING_UNLOCK; \
 	}
 
-#define LOG_ERROR(_msg, ...) { \
-		LOG_PRINTF(COLOR_RED, "ERROR", COLOR_RED, _msg, ##__VA_ARGS__); \
+#define US_LOG_ERROR(x_msg, ...) { \
+		US_LOG_PRINTF(US_COLOR_RED, "ERROR", US_COLOR_RED, x_msg, ##__VA_ARGS__); \
 	}
 
-#define LOG_PERROR(_msg, ...) { \
-		char _perror_buf[1024] = {0}; \
-		char *_perror_ptr = errno_to_string(errno, _perror_buf, 1024); \
-		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, _perror_ptr); \
+#define US_LOG_PERROR(x_msg, ...) { \
+		char *const m_perror_str = us_errno_to_string(errno); \
+		US_LOG_ERROR(x_msg ": %s", ##__VA_ARGS__, m_perror_str); \
+		free(m_perror_str); \
 	}
 
-#define LOG_INFO(_msg, ...) { \
-		LOG_PRINTF(COLOR_GREEN, "INFO ", "", _msg, ##__VA_ARGS__); \
+#define US_LOG_INFO(x_msg, ...) { \
+		US_LOG_PRINTF(US_COLOR_GREEN, "INFO ", "", x_msg, ##__VA_ARGS__); \
 	}
 
-#define LOG_INFO_NOLOCK(_msg, ...) { \
-		LOG_PRINTF_NOLOCK(COLOR_GREEN, "INFO ", "", _msg, ##__VA_ARGS__); \
+#define US_LOG_INFO_NOLOCK(x_msg, ...) { \
+		US_LOG_PRINTF_NOLOCK(US_COLOR_GREEN, "INFO ", "", x_msg, ##__VA_ARGS__); \
 	}
 
-#define LOG_PERF(_msg, ...) { \
-		if (us_log_level >= LOG_LEVEL_PERF) { \
-			LOG_PRINTF(COLOR_CYAN, "PERF ", COLOR_CYAN, _msg, ##__VA_ARGS__); \
+#define US_LOG_PERF(x_msg, ...) { \
+		if (us_g_log_level >= US_LOG_LEVEL_PERF) { \
+			US_LOG_PRINTF(US_COLOR_CYAN, "PERF ", US_COLOR_CYAN, x_msg, ##__VA_ARGS__); \
 		} \
 	}
 
-#define LOG_PERF_FPS(_msg, ...) { \
-		if (us_log_level >= LOG_LEVEL_PERF) { \
-			LOG_PRINTF(COLOR_YELLOW, "PERF ", COLOR_YELLOW, _msg, ##__VA_ARGS__); \
+#define US_LOG_PERF_FPS(x_msg, ...) { \
+		if (us_g_log_level >= US_LOG_LEVEL_PERF) { \
+			US_LOG_PRINTF(US_COLOR_YELLOW, "PERF ", US_COLOR_YELLOW, x_msg, ##__VA_ARGS__); \
 		} \
 	}
 
-#define LOG_VERBOSE(_msg, ...) { \
-		if (us_log_level >= LOG_LEVEL_VERBOSE) { \
-			LOG_PRINTF(COLOR_BLUE, "VERB ", COLOR_BLUE, _msg, ##__VA_ARGS__); \
+#define US_LOG_VERBOSE(x_msg, ...) { \
+		if (us_g_log_level >= US_LOG_LEVEL_VERBOSE) { \
+			US_LOG_PRINTF(US_COLOR_BLUE, "VERB ", US_COLOR_BLUE, x_msg, ##__VA_ARGS__); \
 		} \
 	}
 
-#define LOG_VERBOSE_PERROR(_msg, ...) { \
-		if (us_log_level >= LOG_LEVEL_VERBOSE) { \
-			char _perror_buf[1024] = {0}; \
-			char *_perror_ptr = errno_to_string(errno, _perror_buf, 1023); \
-			LOG_PRINTF(COLOR_BLUE, "VERB ", COLOR_BLUE, _msg ": %s", ##__VA_ARGS__, _perror_ptr); \
+#define US_LOG_VERBOSE_PERROR(x_msg, ...) { \
+		if (us_g_log_level >= US_LOG_LEVEL_VERBOSE) { \
+			char *m_perror_str = us_errno_to_string(errno); \
+			US_LOG_PRINTF(US_COLOR_BLUE, "VERB ", US_COLOR_BLUE, x_msg ": %s", ##__VA_ARGS__, m_perror_str); \
+			free(m_perror_str); \
 		} \
 	}
 
-#define LOG_DEBUG(_msg, ...) { \
-		if (us_log_level >= LOG_LEVEL_DEBUG) { \
-			LOG_PRINTF(COLOR_GRAY, "DEBUG", COLOR_GRAY, _msg, ##__VA_ARGS__); \
+#define US_LOG_DEBUG(x_msg, ...) { \
+		if (us_g_log_level >= US_LOG_LEVEL_DEBUG) { \
+			US_LOG_PRINTF(US_COLOR_GRAY, "DEBUG", US_COLOR_GRAY, x_msg, ##__VA_ARGS__); \
 		} \
 	}

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    #
@@ -23,12 +23,12 @@
 #include "memsink.h"
 
 
-memsink_s *memsink_init(
+us_memsink_s *us_memsink_init(
 	const char *name, const char *obj, bool server,
 	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout) {
 
-	memsink_s *sink;
-	A_CALLOC(sink, 1);
+	us_memsink_s *sink;
+	US_CALLOC(sink, 1);
 	sink->name = name;
 	sink->obj = obj;
 	sink->server = server;
@@ -36,57 +36,56 @@ memsink_s *memsink_init(
 	sink->client_ttl = client_ttl;
 	sink->timeout = timeout;
 	sink->fd = -1;
-	sink->mem = MAP_FAILED;
 	atomic_init(&sink->has_clients, false);
 
-	LOG_INFO("Using %s-sink: %s", name, obj);
+	US_LOG_INFO("Using %s-sink: %s", name, obj);
 
-	mode_t mask = umask(0);
+	const mode_t mask = umask(0);
 	sink->fd = shm_open(sink->obj, (server ? O_RDWR | O_CREAT : O_RDWR), mode);
 	umask(mask);
 	if (sink->fd == -1) {
 		umask(mask);
-		LOG_PERROR("%s-sink: Can't open shared memory", name);
+		US_LOG_PERROR("%s-sink: Can't open shared memory", name);
 		goto error;
 	}
 
-	if (sink->server && ftruncate(sink->fd, sizeof(memsink_shared_s)) < 0) {
-		LOG_PERROR("%s-sink: Can't truncate shared memory", name);
+	if (sink->server && ftruncate(sink->fd, sizeof(us_memsink_shared_s)) < 0) {
+		US_LOG_PERROR("%s-sink: Can't truncate shared memory", name);
 		goto error;
 	}
 
-	if ((sink->mem = memsink_shared_map(sink->fd)) == NULL) {
-		LOG_PERROR("%s-sink: Can't mmap shared memory", name);
+	if ((sink->mem = us_memsink_shared_map(sink->fd)) == NULL) {
+		US_LOG_PERROR("%s-sink: Can't mmap shared memory", name);
 		goto error;
 	}
 
 	return sink;
 
 	error:
-		memsink_destroy(sink);
+		us_memsink_destroy(sink);
 		return NULL;
 }
 
-void memsink_destroy(memsink_s *sink) {
-	if (sink->mem != MAP_FAILED) {
-		if (memsink_shared_unmap(sink->mem) < 0) {
-			LOG_PERROR("%s-sink: Can't unmap shared memory", sink->name);
+void us_memsink_destroy(us_memsink_s *sink) {
+	if (sink->mem != NULL) {
+		if (us_memsink_shared_unmap(sink->mem) < 0) {
+			US_LOG_PERROR("%s-sink: Can't unmap shared memory", sink->name);
 		}
 	}
 	if (sink->fd >= 0) {
 		if (close(sink->fd) < 0) {
-			LOG_PERROR("%s-sink: Can't close shared memory fd", sink->name);
+			US_LOG_PERROR("%s-sink: Can't close shared memory fd", sink->name);
 		}
 		if (sink->rm && shm_unlink(sink->obj) < 0) {
 			if (errno != ENOENT) {
-				LOG_PERROR("%s-sink: Can't remove shared memory", sink->name);
+				US_LOG_PERROR("%s-sink: Can't remove shared memory", sink->name);
 			}
 		}
 	}
 	free(sink);
 }
 
-bool memsink_server_check(memsink_s *sink, const frame_s *frame) {
+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;
@@ -100,97 +99,106 @@ bool memsink_server_check(memsink_s *sink, const frame_s *frame) {
 			atomic_store(&sink->has_clients, true);
 			return true;
 		}
-		LOG_PERROR("%s-sink: Can't lock memory", sink->name);
+		US_LOG_PERROR("%s-sink: Can't lock memory", sink->name);
 		return false;
 	}
 
-	if (sink->mem->magic != MEMSINK_MAGIC || sink->mem->version != MEMSINK_VERSION) {
+	if (sink->mem->magic != US_MEMSINK_MAGIC || sink->mem->version != US_MEMSINK_VERSION) {
 		return true;
 	}
 
-	bool has_clients = (sink->mem->last_client_ts + sink->client_ttl > get_now_monotonic());
+	const bool has_clients = (sink->mem->last_client_ts + sink->client_ttl > us_get_now_monotonic());
 	atomic_store(&sink->has_clients, has_clients);
 
 	if (flock(sink->fd, LOCK_UN) < 0) {
-		LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+		US_LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
 		return false;
 	}
-	return (has_clients || !FRAME_COMPARE_META_USED_NOTS(sink->mem, frame));;
+	return (has_clients || !US_FRAME_COMPARE_META_USED_NOTS(sink->mem, frame));;
 }
 
-int memsink_server_put(memsink_s *sink, const frame_s *frame) {
+int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *const key_requested) {
 	assert(sink->server);
 
-	const long double now = get_now_monotonic();
+	const long double now = us_get_now_monotonic();
 
-	if (frame->used > MEMSINK_MAX_DATA) {
-		LOG_ERROR("%s-sink: Can't put frame: is too big (%zu > %zu)",
-			sink->name, frame->used, MEMSINK_MAX_DATA);
+	if (frame->used > US_MEMSINK_MAX_DATA) {
+		US_LOG_ERROR("%s-sink: Can't put frame: is too big (%zu > %zu)",
+			sink->name, frame->used, US_MEMSINK_MAX_DATA);
 		return 0; // -2
 	}
 
-	if (flock_timedwait_monotonic(sink->fd, 1) == 0) {
-		LOG_VERBOSE("%s-sink: >>>>> Exposing new frame ...", sink->name);
+	if (us_flock_timedwait_monotonic(sink->fd, 1) == 0) {
+		US_LOG_VERBOSE("%s-sink: >>>>> Exposing new frame ...", sink->name);
 
-		sink->last_id = get_now_id();
+		sink->last_id = us_get_now_id();
 		sink->mem->id = sink->last_id;
+		if (sink->mem->key_requested && frame->key) {
+			sink->mem->key_requested = false;
+		}
+		*key_requested = sink->mem->key_requested;
 
 		memcpy(sink->mem->data, frame->data, frame->used);
 		sink->mem->used = frame->used;
-		FRAME_COPY_META(frame, sink->mem);
+		US_FRAME_COPY_META(frame, sink->mem);
 
-		sink->mem->magic = MEMSINK_MAGIC;
-		sink->mem->version = MEMSINK_VERSION;
-		atomic_store(&sink->has_clients, (sink->mem->last_client_ts + sink->client_ttl > get_now_monotonic()));
+		sink->mem->magic = US_MEMSINK_MAGIC;
+		sink->mem->version = US_MEMSINK_VERSION;
+
+		atomic_store(&sink->has_clients, (sink->mem->last_client_ts + sink->client_ttl > us_get_now_monotonic()));
 
 		if (flock(sink->fd, LOCK_UN) < 0) {
-			LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+			US_LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
 			return -1;
 		}
-		LOG_VERBOSE("%s-sink: Exposed new frame; full exposition time = %.3Lf",
-			sink->name, get_now_monotonic() - now);
+		US_LOG_VERBOSE("%s-sink: Exposed new frame; full exposition time = %.3Lf",
+			sink->name, us_get_now_monotonic() - now);
 
 	} else if (errno == EWOULDBLOCK) {
-		LOG_VERBOSE("%s-sink: ===== Shared memory is busy now; frame skipped", sink->name);
+		US_LOG_VERBOSE("%s-sink: ===== Shared memory is busy now; frame skipped", sink->name);
 
 	} else {
-		LOG_PERROR("%s-sink: Can't lock memory", sink->name);
+		US_LOG_PERROR("%s-sink: Can't lock memory", sink->name);
 		return -1;
 	}
 	return 0;
 }
 
-int memsink_client_get(memsink_s *sink, frame_s *frame) { // cppcheck-suppress unusedFunction
+int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *const key_requested, bool key_required) { // cppcheck-suppress unusedFunction
 	assert(!sink->server); // Client only
 
-	if (flock_timedwait_monotonic(sink->fd, sink->timeout) < 0) {
+	if (us_flock_timedwait_monotonic(sink->fd, sink->timeout) < 0) {
 		if (errno == EWOULDBLOCK) {
 			return -2;
 		}
-		LOG_PERROR("%s-sink: Can't lock memory", sink->name);
+		US_LOG_PERROR("%s-sink: Can't lock memory", sink->name);
 		return -1;
 	}
 
 	int retval = -2; // Not updated
-	if (sink->mem->magic == MEMSINK_MAGIC) {
-		if (sink->mem->version != MEMSINK_VERSION) {
-			LOG_ERROR("%s-sink: Protocol version mismatch: sink=%u, required=%u",
-				sink->name, sink->mem->version, MEMSINK_VERSION);
+	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;
-			frame_set_data(frame, sink->mem->data, sink->mem->used);
-			FRAME_COPY_META(sink->mem, frame);
+			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 = get_now_monotonic();
+		sink->mem->last_client_ts = us_get_now_monotonic();
+		if (key_required) {
+			sink->mem->key_requested = true;
+		}
 	}
 
 	done:
 		if (flock(sink->fd, LOCK_UN) < 0) {
-			LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
+			US_LOG_PERROR("%s-sink: Can't unlock memory", sink->name);
 			return -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    #
@@ -42,27 +42,27 @@
 
 
 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;
+	unsigned			client_ttl; // Only for server
+	unsigned			timeout;
 
 	int					fd;
-	memsink_shared_s	*mem;
+	us_memsink_shared_s	*mem;
 	uint64_t			last_id;
 	atomic_bool			has_clients; // Only for server
-} memsink_s;
+} us_memsink_s;
 
 
-memsink_s *memsink_init(
+us_memsink_s *us_memsink_init(
 	const char *name, const char *obj, bool server,
 	mode_t mode, bool rm, unsigned client_ttl, unsigned timeout);
 
-void memsink_destroy(memsink_s *sink);
+void us_memsink_destroy(us_memsink_s *sink);
 
-bool memsink_server_check(memsink_s *sink, const frame_s *frame);
-int memsink_server_put(memsink_s *sink, const frame_s *frame);
+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 memsink_client_get(memsink_s *sink, frame_s *frame);
+int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *const 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    #
@@ -29,13 +29,13 @@
 #include <sys/mman.h>
 
 
-#define MEMSINK_MAGIC	((uint64_t)0xCAFEBABECAFEBABE)
-#define MEMSINK_VERSION	((uint32_t)2)
+#define US_MEMSINK_MAGIC	((uint64_t)0xCAFEBABECAFEBABE)
+#define US_MEMSINK_VERSION	((uint32_t)4)
 
-#ifndef CFG_MEMSINK_MAX_DATA
-#	define CFG_MEMSINK_MAX_DATA 33554432
+#ifndef US_CFG_MEMSINK_MAX_DATA
+#	define US_CFG_MEMSINK_MAX_DATA 33554432
 #endif
-#define MEMSINK_MAX_DATA ((size_t)(CFG_MEMSINK_MAX_DATA))
+#define US_MEMSINK_MAX_DATA ((size_t)(US_CFG_MEMSINK_MAX_DATA))
 
 
 typedef struct {
@@ -51,21 +51,23 @@ typedef struct {
 	unsigned	stride;
 	bool		online;
 	bool		key;
+	unsigned	gop;
 
 	long double	grab_ts;
 	long double	encode_begin_ts;
 	long double	encode_end_ts;
 
 	long double	last_client_ts;
+	bool		key_requested;
 
-	uint8_t		data[MEMSINK_MAX_DATA];
-} memsink_shared_s;
+	uint8_t		data[US_MEMSINK_MAX_DATA];
+} us_memsink_shared_s;
 
 
-INLINE memsink_shared_s *memsink_shared_map(int fd) {
-	memsink_shared_s *mem = mmap(
+INLINE us_memsink_shared_s *us_memsink_shared_map(int fd) {
+	us_memsink_shared_s *mem = mmap(
 		NULL,
-		sizeof(memsink_shared_s),
+		sizeof(us_memsink_shared_s),
 		PROT_READ | PROT_WRITE,
 		MAP_SHARED,
 		fd,
@@ -78,7 +80,7 @@ INLINE memsink_shared_s *memsink_shared_map(int fd) {
 	return mem;
 }
 
-INLINE int memsink_shared_unmap(memsink_shared_s *mem) {
+INLINE int us_memsink_shared_unmap(us_memsink_shared_s *mem) {
 	assert(mem != NULL);
-	return munmap(mem, sizeof(memsink_shared_s));
+	return munmap(mem, sizeof(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    #
@@ -23,7 +23,7 @@
 #include "options.h"
 
 
-void 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, size_t size) {
 	memset(short_opts, 0, size);
     for (unsigned short_index = 0, opt_index = 0; opts[opt_index].name != NULL; ++opt_index) {
 		assert(short_index < size - 3);

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    #
@@ -30,4 +30,4 @@
 #include <sys/types.h>
 
 
-void 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, size_t 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    #
@@ -72,26 +72,25 @@ extern char **environ;
 
 
 #ifdef HAS_PDEATHSIG
-INLINE int process_track_parent_death(void) {
-	pid_t parent = getppid();
+INLINE int us_process_track_parent_death(void) {
+	const pid_t parent = getppid();
 	int signum = SIGTERM;
 #	if defined(__linux__)
-	int retval = prctl(PR_SET_PDEATHSIG, signum);
+	const int retval = prctl(PR_SET_PDEATHSIG, signum);
 #	elif defined(__FreeBSD__)
-	int retval = procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum);
+	const int retval = procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum);
 #	else
 #		error WTF?
 #	endif
 	if (retval < 0) {
-		LOG_PERROR("Can't set to receive SIGTERM on parent process death");
+		US_LOG_PERROR("Can't set to receive SIGTERM on parent process death");
 		return -1;
 	}
 
 	if (kill(parent, 0) < 0) {
-		LOG_PERROR("The parent process %d is already dead", parent);
+		US_LOG_PERROR("The parent process %d is already dead", parent);
 		return -1;
 	}
-
 	return 0;
 }
 #endif
@@ -99,21 +98,21 @@ INLINE int process_track_parent_death(void) {
 #ifdef WITH_SETPROCTITLE
 #	pragma GCC diagnostic ignored "-Wunused-parameter"
 #	pragma GCC diagnostic push
-INLINE void process_set_name_prefix(int argc, char *argv[], const char *prefix) {
+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;
 
-	A_REALLOC(cmdline, allocated);
+	US_REALLOC(cmdline, allocated);
 	cmdline[0] = '\0';
 
 	for (int index = 0; index < argc; ++index) {
 		size_t arg_len = strlen(argv[index]);
 		if (used + arg_len + 16 >= allocated) {
 			allocated += arg_len + 2048;
-			A_REALLOC(cmdline, allocated); // cppcheck-suppress memleakOnRealloc // False-positive (ok with assert)
+			US_REALLOC(cmdline, allocated); // cppcheck-suppress memleakOnRealloc // False-positive (ok with assert)
 		}
 
 		strcat(cmdline, " ");
@@ -130,18 +129,16 @@ INLINE void process_set_name_prefix(int argc, char *argv[], const char *prefix)
 }
 #endif
 
-INLINE void process_notify_parent(void) {
-	pid_t parent = getppid();
-
+INLINE void us_process_notify_parent(void) {
+	const pid_t parent = getppid();
 	if (kill(parent, SIGUSR2) < 0) {
-		LOG_PERROR("Can't send SIGUSR2 to the parent process %d", parent);
+		US_LOG_PERROR("Can't send SIGUSR2 to the parent process %d", parent);
 	}
 }
 
-INLINE void process_suicide(void) {
-	pid_t pid = getpid();
-
+INLINE void us_process_suicide(void) {
+	const pid_t pid = getpid();
 	if (kill(pid, SIGTERM) < 0) {
-		LOG_PERROR("Can't send SIGTERM to own pid %d", pid);
+		US_LOG_PERROR("Can't send SIGTERM to own pid %d", pid);
 	}
 }

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    #
@@ -41,37 +41,38 @@
 
 
 #ifdef PTHREAD_MAX_NAMELEN_NP
-#	define MAX_THREAD_NAME ((size_t)(PTHREAD_MAX_NAMELEN_NP))
+#	define US_MAX_THREAD_NAME ((size_t)(PTHREAD_MAX_NAMELEN_NP))
 #else
-#	define MAX_THREAD_NAME ((size_t)16)
+#	define US_MAX_THREAD_NAME ((size_t)16)
 #endif
 
-#define A_THREAD_CREATE(_tid, _func, _arg)	assert(!pthread_create(_tid, NULL, _func, _arg))
-#define A_THREAD_JOIN(_tid)					assert(!pthread_join(_tid, NULL))
+#define US_THREAD_CREATE(x_tid, x_func, x_arg)	assert(!pthread_create(&(x_tid), NULL, (x_func), (x_arg)))
+#define US_THREAD_JOIN(x_tid)					assert(!pthread_join((x_tid), NULL))
 
 #ifdef WITH_PTHREAD_NP
-#	define A_THREAD_RENAME(_fmt, ...) { \
-			char _new_tname_buf[MAX_THREAD_NAME] = {0}; \
-			assert(snprintf(_new_tname_buf, MAX_THREAD_NAME, _fmt, ##__VA_ARGS__) > 0); \
-			thread_set_name(_new_tname_buf); \
+#	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); \
+			us_thread_set_name(m_new_tname_buf); \
 		}
 #else
-#	define A_THREAD_RENAME(_fmt, ...)
+#	define US_THREAD_RENAME(_fmt, ...)
 #endif
 
-#define A_MUTEX_INIT(_mutex)	assert(!pthread_mutex_init(_mutex, NULL))
-#define A_MUTEX_DESTROY(_mutex)	assert(!pthread_mutex_destroy(_mutex))
-#define A_MUTEX_LOCK(_mutex)	assert(!pthread_mutex_lock(_mutex))
-#define A_MUTEX_UNLOCK(_mutex)	assert(!pthread_mutex_unlock(_mutex))
+#define 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)))
+#define US_MUTEX_UNLOCK(x_mutex)	assert(!pthread_mutex_unlock(&(x_mutex)))
 
-#define A_COND_INIT(_cond)		assert(!pthread_cond_init(_cond, NULL))
-#define A_COND_DESTROY(_cond)	assert(!pthread_cond_destroy(_cond))
-#define A_COND_SIGNAL(...)		assert(!pthread_cond_signal(__VA_ARGS__))
-#define A_COND_WAIT_TRUE(_var, _cond, _mutex) { while(!(_var)) assert(!pthread_cond_wait(_cond, _mutex)); }
+#define US_COND_INIT(x_cond)		assert(!pthread_cond_init(&(x_cond), NULL))
+#define US_COND_DESTROY(x_cond)		assert(!pthread_cond_destroy(&(x_cond)))
+#define US_COND_SIGNAL(x_cond)		assert(!pthread_cond_signal(&(x_cond)))
+#define US_COND_BROADCAST(x_cond)	assert(!pthread_cond_broadcast(&(x_cond)))
+#define US_COND_WAIT_FOR(x_var, x_cond, x_mutex) { while(!(x_var)) assert(!pthread_cond_wait(&(x_cond), &(x_mutex))); }
 
 
 #ifdef WITH_PTHREAD_NP
-INLINE void thread_set_name(const char *name) {
+INLINE void us_thread_set_name(const char *name) {
 #	if defined(__linux__)
 	pthread_setname_np(pthread_self(), name);
 #	elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
@@ -79,45 +80,45 @@ INLINE void thread_set_name(const char *name) {
 #	elif defined(__NetBSD__)
 	pthread_setname_np(pthread_self(), "%s", (void *)name);
 #	else
-#		error thread_set_name() not implemented, you can disable it using WITH_PTHREAD_NP=0
+#		error us_thread_set_name() not implemented, you can disable it using WITH_PTHREAD_NP=0
 #	endif
 }
 #endif
 
-INLINE void thread_get_name(char *name) { // Always required for logging
+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, MAX_THREAD_NAME);
+	retval = pthread_getname_np(pthread_self(), name, US_MAX_THREAD_NAME);
 #	elif \
 		(defined(__FreeBSD__) && defined(__FreeBSD_version) && __FreeBSD_version >= 1103500) \
 		|| (defined(__OpenBSD__) && defined(OpenBSD) && OpenBSD >= 201905) \
 		|| defined(__DragonFly__)
-	pthread_get_name_np(pthread_self(), name, MAX_THREAD_NAME);
+	pthread_get_name_np(pthread_self(), name, US_MAX_THREAD_NAME);
 	if (name[0] != '\0') {
 		retval = 0;
 	}
 #	else
-#		error thread_get_name() not implemented, you can disable it using WITH_PTHREAD_NP=0
+#		error us_thread_get_name() not implemented, you can disable it using WITH_PTHREAD_NP=0
 #	endif
 	if (retval < 0) {
 #endif
 
 #if defined(__linux__)
-		pid_t tid = syscall(SYS_gettid);
+		const pid_t tid = syscall(SYS_gettid);
 #elif defined(__FreeBSD__)
-		pid_t tid = syscall(SYS_thr_self);
+		const pid_t tid = syscall(SYS_thr_self);
 #elif defined(__OpenBSD__)
-		pid_t tid = syscall(SYS_getthrid);
+		const pid_t tid = syscall(SYS_getthrid);
 #elif defined(__NetBSD__)
-		pid_t tid = syscall(SYS__lwp_self);
+		const pid_t tid = syscall(SYS__lwp_self);
 #elif defined(__DragonFly__)
-		pid_t tid = syscall(SYS_lwp_gettid);
+		const pid_t tid = syscall(SYS_lwp_gettid);
 #else
-		pid_t tid = 0; // Makes cppcheck happy
+		const pid_t tid = 0; // Makes cppcheck happy
 #	warning gettid() not implemented
 #endif
-		assert(snprintf(name, MAX_THREAD_NAME, "tid=%d", tid) > 0);
+		assert(snprintf(name, US_MAX_THREAD_NAME, "tid=%d", tid) > 0);
 
 #ifdef WITH_PTHREAD_NP
 	}

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    #
@@ -38,6 +38,12 @@
 #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
+
 
 #ifdef NDEBUG
 #	error WTF dude? Asserts are good things!
@@ -53,36 +59,41 @@
 #define INLINE inline __attribute__((always_inline))
 #define UNUSED __attribute__((unused))
 
-#define A_CALLOC(_dest, _nmemb)		assert((_dest = calloc(_nmemb, sizeof(*(_dest)))))
-#define A_REALLOC(_dest, _nmemb)	assert((_dest = realloc(_dest, _nmemb * sizeof(*(_dest)))))
-#define MEMSET_ZERO(_obj)			memset(&(_obj), 0, sizeof(_obj))
+#define 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_MEMSET_ZERO(x_obj)			memset(&(x_obj), 0, sizeof(x_obj))
 
-#define A_ASPRINTF(_dest, _fmt, ...) assert(asprintf(&(_dest), _fmt, ##__VA_ARGS__) >= 0)
-
-#define ARRAY_LEN(_array) (sizeof(_array) / sizeof(_array[0]))
+#define US_ASPRINTF(x_dest, x_fmt, ...) assert(asprintf(&(x_dest), (x_fmt), ##__VA_ARGS__) >= 0)
 
 
-INLINE const char *bool_to_string(bool flag) {
+INLINE char *us_strdup(const char *str) {
+	char *const new = strdup(str);
+	assert(new != NULL);
+	return new;
+}
+
+INLINE const char *us_bool_to_string(bool flag) {
 	return (flag ? "true" : "false");
 }
 
-INLINE size_t align_size(size_t size, size_t to) {
+INLINE size_t us_align_size(size_t size, size_t to) {
 	return ((size + (to - 1)) & ~(to - 1));
 }
 
-INLINE unsigned min_u(unsigned a, unsigned b) {
+INLINE unsigned us_min_u(unsigned a, unsigned b) {
 	return (a < b ? a : b);
 }
 
-INLINE unsigned max_u(unsigned a, unsigned b) {
+INLINE unsigned us_max_u(unsigned a, unsigned b) {
 	return (a > b ? a : b);
 }
 
-INLINE long long floor_ms(long double now) {
+INLINE long long us_floor_ms(long double now) {
 	return (long long)now - (now < (long long)now); // floor()
 }
 
-INLINE uint32_t triple_u32(uint32_t x) {
+INLINE uint32_t us_triple_u32(uint32_t x) {
 	// https://nullprogram.com/blog/2018/07/31/
 	x ^= x >> 17;
 	x *= UINT32_C(0xED5AD4BB);
@@ -94,7 +105,7 @@ INLINE uint32_t triple_u32(uint32_t x) {
 	return x;
 }
 
-INLINE void get_now(clockid_t clk_id, time_t *sec, long *msec) {
+INLINE void us_get_now(clockid_t clk_id, time_t *sec, long *msec) {
 	struct timespec ts;
 	assert(!clock_gettime(clk_id, &ts));
 	*sec = ts.tv_sec;
@@ -106,54 +117,57 @@ INLINE void 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 get_now_monotonic(void) {
+INLINE long double us_get_now_monotonic(void) {
 	time_t sec;
 	long msec;
-	get_now(X_CLOCK_MONOTONIC, &sec, &msec);
+	us_get_now(CLOCK_MONOTONIC, &sec, &msec);
 	return (long double)sec + ((long double)msec) / 1000;
 }
 
-INLINE uint64_t get_now_monotonic_u64(void) {
+INLINE uint64_t us_get_now_monotonic_u64(void) {
 	struct timespec ts;
-	assert(!clock_gettime(X_CLOCK_MONOTONIC, &ts));
+	assert(!clock_gettime(CLOCK_MONOTONIC, &ts));
 	return (uint64_t)(ts.tv_nsec / 1000) + (uint64_t)ts.tv_sec * 1000000;
 }
 
-#undef X_CLOCK_MONOTONIC
-
-INLINE uint64_t get_now_id(void) {
-	uint64_t now = get_now_monotonic_u64();
-	return (uint64_t)triple_u32(now) | ((uint64_t)triple_u32(now + 12345) << 32);
+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 long double get_now_real(void) {
+INLINE long double us_get_now_real(void) {
 	time_t sec;
 	long msec;
-	get_now(CLOCK_REALTIME, &sec, &msec);
+	us_get_now(CLOCK_REALTIME, &sec, &msec);
 	return (long double)sec + ((long double)msec) / 1000;
 }
 
-INLINE unsigned get_cores_available(void) {
+INLINE unsigned us_get_cores_available(void) {
 	long cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
 	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
-	return max_u(min_u(cores_sysconf, 4), 1);
+	return us_max_u(us_min_u(cores_sysconf, 4), 1);
 }
 
-INLINE int flock_timedwait_monotonic(int fd, long double timeout) {
-	long double deadline_ts = get_now_monotonic() + timeout;
+INLINE void us_ld_to_timespec(long double ld, struct timespec *ts) {
+	ts->tv_sec = (long)ld;
+	ts->tv_nsec = (ld - ts->tv_sec) * 1000000000L;
+	if (ts->tv_nsec > 999999999L) {
+		ts->tv_sec += 1;
+		ts->tv_nsec = 0;
+	}
+}
+
+INLINE long double us_timespec_to_ld(const struct timespec *ts) {
+	return ts->tv_sec + ((long double)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;
 	int retval = -1;
 
 	while (true) {
 		retval = flock(fd, LOCK_EX | LOCK_NB);
-		if (retval == 0 || errno != EWOULDBLOCK || get_now_monotonic() > deadline_ts) {
+		if (retval == 0 || errno != EWOULDBLOCK || us_get_now_monotonic() > deadline_ts) {
 			break;
 		}
 		if (usleep(1000) < 0) {
@@ -163,15 +177,34 @@ INLINE int flock_timedwait_monotonic(int fd, long double timeout) {
 	return retval;
 }
 
-INLINE char *errno_to_string(int error, char *buf, size_t size) {
-	assert(buf);
-	assert(size > 0);
+INLINE char *us_errno_to_string(int error) {
 	locale_t locale = newlocale(LC_MESSAGES_MASK, "C", NULL);
-	char *str = "!!! newlocale() error !!!";
-	strncpy(buf, (locale ? strerror_l(error, locale) : str), size - 1);
-	buf[size - 1] = '\0';
+	char *buf;
 	if (locale) {
+		buf = us_strdup(strerror_l(error, locale));
 		freelocale(locale);
+	} else {
+		buf = us_strdup("!!! newlocale() error !!!");
+	}
+	return 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);
 	}
 	return buf;
 }

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    #
@@ -26,15 +26,15 @@
 typedef struct {
 	struct jpeg_error_mgr	mgr; // Default manager
 	jmp_buf					jmp;
-	const frame_s			*frame;
+	const us_frame_s		*frame;
 } _jpeg_error_manager_s;
 
 
 static void _jpeg_error_handler(j_common_ptr jpeg);
 
 
-int unjpeg(const frame_s *src, frame_s *dest, bool decode) {
-	assert(is_jpeg(src->format));
+int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode) {
+	assert(us_is_jpeg(src->format));
 
 	volatile int retval = 0;
 
@@ -57,7 +57,7 @@ int unjpeg(const frame_s *src, frame_s *dest, bool decode) {
 
 	jpeg_start_decompress(&jpeg);
 
-	frame_copy_meta(src, dest);
+	us_frame_copy_meta(src, dest);
 	dest->format = V4L2_PIX_FMT_RGB24;
 	dest->width = jpeg.output_width;
 	dest->height = jpeg.output_height;
@@ -68,10 +68,10 @@ int unjpeg(const frame_s *src, frame_s *dest, bool decode) {
 		JSAMPARRAY scanlines;
 		scanlines = (*jpeg.mem->alloc_sarray)((j_common_ptr) &jpeg, JPOOL_IMAGE, dest->stride, 1);
 
-		frame_realloc_data(dest, ((dest->width * dest->height) << 1) * 2);
+		us_frame_realloc_data(dest, ((dest->width * dest->height) << 1) * 2);
 		while (jpeg.output_scanline < jpeg.output_height) {
 			jpeg_read_scanlines(&jpeg, scanlines, 1);
-			frame_append_data(dest, scanlines[0], dest->stride);
+			us_frame_append_data(dest, scanlines[0], dest->stride);
 		}
 
 		jpeg_finish_decompress(&jpeg);
@@ -87,6 +87,6 @@ static void _jpeg_error_handler(j_common_ptr jpeg) {
 	char msg[JMSG_LENGTH_MAX];
 
 	(*jpeg_error->mgr.format_message)(jpeg, msg);
-	LOG_ERROR("Can't decompress JPEG: %s", msg);
+	US_LOG_ERROR("Can't decompress JPEG: %s", msg);
 	longjmp(jpeg_error->jmp, -1);
 }

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    #
@@ -37,4 +37,4 @@
 #include "frame.h"
 
 
-int unjpeg(const frame_s *src, frame_s *dest, bool decode);
+int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode);

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    #
@@ -26,17 +26,15 @@
 
 #include <sys/ioctl.h>
 
-#include "tools.h"
 
-
-#ifndef CFG_XIOCTL_RETRIES
-#	define CFG_XIOCTL_RETRIES 4
+#ifndef US_CFG_XIOCTL_RETRIES
+#	define US_CFG_XIOCTL_RETRIES 4
 #endif
-#define XIOCTL_RETRIES ((unsigned)(CFG_XIOCTL_RETRIES))
+#define _XIOCTL_RETRIES ((unsigned)(US_CFG_XIOCTL_RETRIES))
 
 
-INLINE int xioctl(int fd, int request, void *arg) {
-	int retries = XIOCTL_RETRIES;
+INLINE int us_xioctl(int fd, int request, void *arg) {
+	int retries = _XIOCTL_RETRIES;
 	int retval = -1;
 
 	do {

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    #
@@ -23,85 +23,83 @@
 #include "blank.h"
 
 
-static frame_s *_init_internal(void);
-static frame_s *_init_external(const char *path);
+static us_frame_s *_init_internal(void);
+static us_frame_s *_init_external(const char *path);
 
 
-frame_s *blank_frame_init(const char *path) {
-	frame_s *blank = NULL;
+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) {
-		LOG_INFO("Using external blank placeholder: %s", path);
+	if (blank != NULL) {
+		US_LOG_INFO("Using external blank placeholder: %s", path);
 	} else {
 		blank = _init_internal();
-		LOG_INFO("Using internal blank placeholder");
+		US_LOG_INFO("Using internal blank placeholder");
 	}
 	return blank;
 }
 
-static frame_s *_init_internal(void) {
-	frame_s *blank = frame_init();
-	frame_set_data(blank, BLANK_JPEG_DATA, BLANK_JPEG_DATA_SIZE);
-	blank->width = BLANK_JPEG_WIDTH;
-	blank->height = BLANK_JPEG_HEIGHT;
+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;
 }
 
-static frame_s *_init_external(const char *path) {
+static us_frame_s *_init_external(const char *path) {
 	FILE *fp = NULL;
 
-	frame_s *blank = frame_init();
+	us_frame_s *blank = us_frame_init();
 	blank->format = V4L2_PIX_FMT_JPEG;
 
 	if ((fp = fopen(path, "rb")) == NULL) {
-		LOG_PERROR("Can't open blank placeholder '%s'", path);
+		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) {
-			frame_realloc_data(blank, blank->used + CHUNK_SIZE * 2);
+			us_frame_realloc_data(blank, blank->used + CHUNK_SIZE * 2);
 		}
 
-		size_t readed = fread(blank->data + blank->used, 1, CHUNK_SIZE, fp);
+		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 {
-				LOG_PERROR("Can't read blank placeholder");
+				US_LOG_PERROR("Can't read blank placeholder");
 				goto error;
 			}
 		}
 	}
 #	undef CHUNK_SIZE
 
-	frame_s *decoded = frame_init();
-	if (unjpeg(blank, decoded, false) < 0) {
-		frame_destroy(decoded);
+	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;
-	frame_destroy(decoded);
+	us_frame_destroy(decoded);
 
 	goto ok;
 
 	error:
-		frame_destroy(blank);
+		us_frame_destroy(blank);
 		blank = NULL;
 
 	ok:
-		if (fp) {
-			fclose(fp);
-		}
+		US_DELETE(fp, fclose);
 
 	return 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    #
@@ -35,4 +35,4 @@
 #include "data/blank_jpeg.h"
 
 
-frame_s *blank_frame_init(const char *path);
+us_frame_s *us_blank_frame_init(const char *path);

src/ustreamer/data/blank_jpeg.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 +22,11 @@
 #include "blank_jpeg.h"
 
 
-const unsigned BLANK_JPEG_WIDTH = 640;
-const unsigned BLANK_JPEG_HEIGHT = 480;
+const unsigned US_BLANK_JPEG_WIDTH = 640;
+const unsigned US_BLANK_JPEG_HEIGHT = 480;
 
-const size_t BLANK_JPEG_DATA_SIZE = 13845;
-const uint8_t BLANK_JPEG_DATA[] = {
+const size_t US_BLANK_JPEG_DATA_SIZE = 13845;
+const uint8_t US_BLANK_JPEG_DATA[] = {
 	0xFF, 0xD8, 0xFF, 0xE1, 0x09, 0x50, 0x68, 0x74, 0x74, 0x70, 0x3A, 0x2F, 0x2F, 0x6E, 0x73, 0x2E, 0x61, 0x64, 0x6F, 0x62,
 	0x65, 0x2E, 0x63, 0x6F, 0x6D, 0x2F, 0x78, 0x61, 0x70, 0x2F, 0x31, 0x2E, 0x30, 0x2F, 0x00, 0x3C, 0x3F, 0x78, 0x70, 0x61,
 	0x63, 0x6B, 0x65, 0x74, 0x20, 0x62, 0x65, 0x67, 0x69, 0x6E, 0x3D, 0x22, 0xEF, 0xBB, 0xBF, 0x22, 0x20, 0x69, 0x64, 0x3D,

src/ustreamer/data/blank_jpeg.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    #
@@ -27,8 +27,8 @@
 #include <sys/types.h>
 
 
-extern const unsigned BLANK_JPEG_WIDTH;
-extern const unsigned BLANK_JPEG_HEIGHT;
+extern const unsigned US_BLANK_JPEG_WIDTH;
+extern const unsigned US_BLANK_JPEG_HEIGHT;
 
-extern const size_t BLANK_JPEG_DATA_SIZE;
-extern const uint8_t BLANK_JPEG_DATA[];
+extern const size_t US_BLANK_JPEG_DATA_SIZE;
+extern const uint8_t US_BLANK_JPEG_DATA[];

src/ustreamer/data/favicon_ico.c

@@ -0,0 +1,782 @@
+/*****************************************************************************
+#                                                                            #
+#    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 "favicon_ico.h"
+
+
+const size_t US_FAVICON_ICO_DATA_SIZE = 15086;
+const uint8_t US_FAVICON_ICO_DATA[] = {
+	0x00, 0x00, 0x01, 0x00, 0x03, 0x00, 0x30, 0x30, 0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0xA8, 0x25, 0x00, 0x00, 0x36, 0x00,
+	0x00, 0x00, 0x20, 0x20, 0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0xA8, 0x10, 0x00, 0x00, 0xDE, 0x25, 0x00, 0x00, 0x10, 0x10,
+	0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0x68, 0x04, 0x00, 0x00, 0x86, 0x36, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x30, 0x00,
+	0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00,
+	0x00, 0x3A, 0x00, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00,
+	0x00, 0x2A, 0x00, 0x00, 0x00, 0x47, 0x00, 0x00, 0x00, 0x56, 0x00, 0x00, 0x00, 0x35, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x19, 0x00, 0x00, 0x00, 0x9E, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00, 0x5E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x1A, 0x00, 0x00, 0x00, 0x91, 0x00, 0x00, 0x00, 0xED, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xEB, 0x00, 0x00, 0x00, 0xBA, 0x00, 0x00,
+	0x00, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xC6, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFE, 0x00, 0x00, 0x00, 0x75, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00, 0xDE, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xC6, 0x00, 0x00,
+	0x00, 0x47, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x50, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFE, 0x00, 0x00,
+	0x00, 0x34, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, 0x00, 0x00,
+	0x00, 0xE3, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x97, 0x00, 0x00,
+	0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
+	0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00,
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+	0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xDF, 0xCF, 0x00, 0x00, 0x87, 0x81, 0x00, 0x00, 0x87, 0x81, 0x00, 0x00, 0xC7, 0x84,
+	0x00, 0x00, 0xE7, 0x8F, 0x00, 0x00, 0xE3, 0x8F, 0x00, 0x00, 0xF3, 0x8F, 0x00, 0x00, 0xF3, 0x8F, 0x00, 0x00, 0xF3, 0xCF,
+	0x00, 0x00, 0x7B, 0xCF, 0x00, 0x00, 0x01, 0xC7, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xFF, 0xF8,
+	0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00,
+};

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    #
@@ -22,11 +22,10 @@
 
 #pragma once
 
-#define VERSION_MAJOR 5
-#define VERSION_MINOR 10
+#include <stdint.h>
 
-#define MAKE_VERSION2(_major, _minor) #_major "." #_minor
-#define MAKE_VERSION1(_major, _minor) MAKE_VERSION2(_major, _minor)
-#define VERSION MAKE_VERSION1(VERSION_MAJOR, VERSION_MINOR)
+#include <sys/types.h>
 
-#define VERSION_U ((unsigned)(VERSION_MAJOR * 1000 + VERSION_MINOR))
+
+extern const size_t US_FAVICON_ICO_DATA_SIZE;
+extern const uint8_t US_FAVICON_ICO_DATA[];

src/ustreamer/data/index.html

@@ -3,7 +3,7 @@
 <html>
 <head>
 	<meta charset="utf-8" />
-	<title>uStreamer</title>
+	<title>μStreamer</title>
 	<style>body {font-family: monospace;}</style>
 </head>
 

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    #
@@ -22,18 +22,18 @@
 #include "index_html.h"
 
 
-const char *const HTML_INDEX_PAGE = " \
+const char *const US_HTML_INDEX_PAGE = " \
 	<!DOCTYPE html> \
 	\
 	<html> \
 	<head> \
 		<meta charset=\"utf-8\" /> \
-		<title>uStreamer</title> \
+		<title>μStreamer</title> \
 		<style>body {font-family: monospace;}</style> \
 	</head> \
 	\
 	<body> \
-		<h3>&micro;Streamer v" VERSION "</h3> \
+		<h3>&micro;Streamer v" US_VERSION "</h3> \
 		<hr> \
 		<ul> \
 			<li> \

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    #
@@ -24,7 +24,7 @@
 
 #include <sys/types.h>
 
-#include "../../libs/config.h"
+#include "../../libs/const.h"
 
 
-extern const char *const HTML_INDEX_PAGE;
+extern const char *const US_HTML_INDEX_PAGE;

src/ustreamer/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    #
@@ -42,79 +42,81 @@
 #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"
 
 
-#define VIDEO_MIN_WIDTH		((unsigned)160)
-#define VIDEO_MAX_WIDTH		((unsigned)10240)
+#define US_VIDEO_MIN_WIDTH		((unsigned)160)
+#define US_VIDEO_MAX_WIDTH		((unsigned)15360)
 
-#define VIDEO_MIN_HEIGHT	((unsigned)120)
-#define VIDEO_MAX_HEIGHT	((unsigned)4320)
+#define US_VIDEO_MIN_HEIGHT		((unsigned)120)
+#define US_VIDEO_MAX_HEIGHT		((unsigned)8640)
 
-#define VIDEO_MAX_FPS		((unsigned)120)
+#define US_VIDEO_MAX_FPS		((unsigned)120)
 
-#define STANDARD_UNKNOWN	V4L2_STD_UNKNOWN
-#define STANDARDS_STR		"PAL, NTSC, SECAM"
+#define US_STANDARD_UNKNOWN		V4L2_STD_UNKNOWN
+#define US_STANDARDS_STR		"PAL, NTSC, SECAM"
 
-#define FORMAT_UNKNOWN	-1
-#define FORMATS_STR		"YUYV, UYVY, RGB565, RGB24, MJPEG, JPEG"
+#define US_FORMAT_UNKNOWN		-1
+#define US_FORMATS_STR			"YUYV, UYVY, RGB565, RGB24, BGR24, MJPEG, JPEG"
 
-#define IO_METHOD_UNKNOWN	-1
-#define IO_METHODS_STR		"MMAP, USERPTR"
+#define US_IO_METHOD_UNKNOWN	-1
+#define US_IO_METHODS_STR		"MMAP, USERPTR"
 
 
 typedef struct {
-	frame_s				raw;
+	us_frame_s			raw;
 	struct v4l2_buffer	buf;
 	int					dma_fd;
 	bool				grabbed;
-} hw_buffer_s;
+} 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;
-	hw_buffer_s	*hw_bufs;
-	bool		capturing;
-	bool		persistent_timeout_reported;
-} device_runtime_s;
+	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;
+	enum v4l2_buf_type	capture_type;
+	bool				capturing;
+	bool				persistent_timeout_reported;
+} us_device_runtime_s;
 
 typedef enum {
 	CTL_MODE_NONE = 0,
 	CTL_MODE_VALUE,
 	CTL_MODE_AUTO,
 	CTL_MODE_DEFAULT,
-} control_mode_e;
+} us_control_mode_e;
 
 typedef struct {
-	control_mode_e	mode;
-	int				value;
-} control_s;
+	us_control_mode_e	mode;
+	int					value;
+} us_control_s;
 
 typedef struct {
-	control_s brightness;
-	control_s contrast;
-	control_s saturation;
-	control_s hue;
-	control_s gamma;
-	control_s sharpness;
-	control_s backlight_compensation;
-	control_s white_balance;
-	control_s gain;
-	control_s color_effect;
-	control_s rotate;
-	control_s flip_vertical;
-	control_s flip_horizontal;
-} controls_s;
+	us_control_s	brightness;
+	us_control_s	contrast;
+	us_control_s	saturation;
+	us_control_s	hue;
+	us_control_s	gamma;
+	us_control_s	sharpness;
+	us_control_s	backlight_compensation;
+	us_control_s	white_balance;
+	us_control_s	gain;
+	us_control_s	color_effect;
+	us_control_s	rotate;
+	us_control_s	flip_vertical;
+	us_control_s	flip_horizontal;
+} us_controls_s;
 
 typedef struct {
 	char				*path;
@@ -131,26 +133,24 @@ typedef struct {
 	size_t				min_frame_size;
 	bool				persistent;
 	unsigned			timeout;
-
-	controls_s ctl;
-
-	device_runtime_s *run;
-} device_s;
+	us_controls_s 		ctl;
+	us_device_runtime_s *run;
+} us_device_s;
 
 
-device_s *device_init(void);
-void device_destroy(device_s *dev);
+us_device_s *us_device_init(void);
+void us_device_destroy(us_device_s *dev);
 
-int device_parse_format(const char *str);
-v4l2_std_id device_parse_standard(const char *str);
-int device_parse_io_method(const char *str);
+int us_device_parse_format(const char *str);
+v4l2_std_id us_device_parse_standard(const char *str);
+int us_device_parse_io_method(const char *str);
 
-int device_open(device_s *dev);
-void device_close(device_s *dev);
+int us_device_open(us_device_s *dev);
+void us_device_close(us_device_s *dev);
 
-int device_export_to_dma(device_s *dev);
-int device_switch_capturing(device_s *dev, bool enable);
-int device_select(device_s *dev, bool *has_read, bool *has_write, bool *has_error);
-int device_grab_buffer(device_s *dev, hw_buffer_s **hw);
-int device_release_buffer(device_s *dev, hw_buffer_s *hw);
-int device_consume_event(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);

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    #
@@ -25,112 +25,110 @@
 
 static const struct {
 	const char *name;
-	const encoder_type_e type;
+	const us_encoder_type_e type; // cppcheck-suppress unusedStructMember
 } _ENCODER_TYPES[] = {
-	{"CPU",			ENCODER_TYPE_CPU},
-	{"HW",			ENCODER_TYPE_HW},
-	{"M2M-VIDEO",	ENCODER_TYPE_M2M_VIDEO},
-	{"M2M-IMAGE",	ENCODER_TYPE_M2M_IMAGE},
-	{"M2M-MJPEG",	ENCODER_TYPE_M2M_VIDEO},
-	{"M2M-JPEG",	ENCODER_TYPE_M2M_IMAGE},
-	{"OMX",			ENCODER_TYPE_M2M_IMAGE},
-	{"NOOP",		ENCODER_TYPE_NOOP},
+	{"CPU",			US_ENCODER_TYPE_CPU},
+	{"HW",			US_ENCODER_TYPE_HW},
+	{"M2M-VIDEO",	US_ENCODER_TYPE_M2M_VIDEO},
+	{"M2M-IMAGE",	US_ENCODER_TYPE_M2M_IMAGE},
+	{"M2M-MJPEG",	US_ENCODER_TYPE_M2M_VIDEO},
+	{"M2M-JPEG",	US_ENCODER_TYPE_M2M_IMAGE},
+	{"OMX",			US_ENCODER_TYPE_M2M_IMAGE},
+	{"NOOP",		US_ENCODER_TYPE_NOOP},
 };
 
 
 static void *_worker_job_init(void *v_enc);
 static void _worker_job_destroy(void *v_job);
-static bool _worker_run_job(worker_s *wr);
+static bool _worker_run_job(us_worker_s *wr);
 
 
-#define ER(_next)	enc->run->_next
+#define _ER(x_next)	enc->run->x_next
 
 
-encoder_s *encoder_init(void) {
-	encoder_runtime_s *run;
-	A_CALLOC(run, 1);
-	run->type = ENCODER_TYPE_CPU;
+us_encoder_s *us_encoder_init(void) {
+	us_encoder_runtime_s *run;
+	US_CALLOC(run, 1);
+	run->type = US_ENCODER_TYPE_CPU;
 	run->quality = 80;
-	A_MUTEX_INIT(&run->mutex);
+	US_MUTEX_INIT(run->mutex);
 
-	encoder_s *enc;
-	A_CALLOC(enc, 1);
+	us_encoder_s *enc;
+	US_CALLOC(enc, 1);
 	enc->type = run->type;
-	enc->n_workers = get_cores_available();
+	enc->n_workers = us_get_cores_available();
 	enc->run = run;
 	return enc;
 }
 
-void encoder_destroy(encoder_s *enc) {
-	if (ER(m2ms)) {
-		for (unsigned index = 0; index < ER(n_m2ms); ++index) {
-			if (ER(m2ms[index])) {
-				m2m_encoder_destroy(ER(m2ms[index]));
-			}
+void us_encoder_destroy(us_encoder_s *enc) {
+	if (_ER(m2ms) != NULL) {
+		for (unsigned index = 0; index < _ER(n_m2ms); ++index) {
+			US_DELETE(_ER(m2ms[index]), us_m2m_encoder_destroy)
 		}
-		free(ER(m2ms));
+		free(_ER(m2ms));
 	}
-	A_MUTEX_DESTROY(&ER(mutex));
+	US_MUTEX_DESTROY(_ER(mutex));
 	free(enc->run);
 	free(enc);
 }
 
-encoder_type_e encoder_parse_type(const char *str) {
-	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
-		if (!strcasecmp(str, _ENCODER_TYPES[index].name)) {
-			return _ENCODER_TYPES[index].type;
+us_encoder_type_e us_encoder_parse_type(const char *str) {
+	US_ARRAY_ITERATE(_ENCODER_TYPES, 0, item, {
+		if (!strcasecmp(item->name, str)) {
+			return item->type;
 		}
-	}
-	return ENCODER_TYPE_UNKNOWN;
+	});
+	return US_ENCODER_TYPE_UNKNOWN;
 }
 
-const char *encoder_type_to_string(encoder_type_e type) {
-	for (unsigned index = 0; index < ARRAY_LEN(_ENCODER_TYPES); ++index) {
-		if (_ENCODER_TYPES[index].type == type) {
-			return _ENCODER_TYPES[index].name;
+const char *us_encoder_type_to_string(us_encoder_type_e type) {
+	US_ARRAY_ITERATE(_ENCODER_TYPES, 0, item, {
+		if (item->type == type) {
+			return item->name;
 		}
-	}
+	});
 	return _ENCODER_TYPES[0].name;
 }
 
-workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev) {
-#	define DR(_next) dev->run->_next
+us_workers_pool_s *us_encoder_workers_pool_init(us_encoder_s *enc, us_device_s *dev) {
+#	define DR(x_next) dev->run->x_next
 
-	encoder_type_e type = (ER(cpu_forced) ? ENCODER_TYPE_CPU : enc->type);
+	us_encoder_type_e type = (_ER(cpu_forced) ? US_ENCODER_TYPE_CPU : enc->type);
 	unsigned quality = dev->jpeg_quality;
-	unsigned n_workers = min_u(enc->n_workers, DR(n_bufs));
+	unsigned n_workers = us_min_u(enc->n_workers, DR(n_bufs));
 	bool cpu_forced = false;
 
-	if (is_jpeg(DR(format)) && type != ENCODER_TYPE_HW) {
-		LOG_INFO("Switching to HW encoder: the input is (M)JPEG ...");
-		type = ENCODER_TYPE_HW;
+	if (us_is_jpeg(DR(format)) && type != US_ENCODER_TYPE_HW) {
+		US_LOG_INFO("Switching to HW encoder: the input is (M)JPEG ...");
+		type = US_ENCODER_TYPE_HW;
 	}
 
-	if (type == ENCODER_TYPE_HW) {
-		if (!is_jpeg(DR(format))) {
-			LOG_INFO("Switching to CPU encoder: the input format is not (M)JPEG ...");
+	if (type == US_ENCODER_TYPE_HW) {
+		if (!us_is_jpeg(DR(format))) {
+			US_LOG_INFO("Switching to CPU encoder: the input format is not (M)JPEG ...");
 			goto use_cpu;
 		}
 		quality = DR(jpeg_quality);
 		n_workers = 1;
 
-	} else if (type == ENCODER_TYPE_M2M_VIDEO || type == ENCODER_TYPE_M2M_IMAGE) {
-		LOG_DEBUG("Preparing M2M-%s encoder ...", (type == ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"));
-		if (ER(m2ms) == NULL) {
-			A_CALLOC(ER(m2ms), n_workers);
+	} else if (type == US_ENCODER_TYPE_M2M_VIDEO || type == US_ENCODER_TYPE_M2M_IMAGE) {
+		US_LOG_DEBUG("Preparing M2M-%s encoder ...", (type == US_ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"));
+		if (_ER(m2ms) == NULL) {
+			US_CALLOC(_ER(m2ms), n_workers);
 		}
-		for (; ER(n_m2ms) < n_workers; ++ER(n_m2ms)) {
+		for (; _ER(n_m2ms) < n_workers; ++_ER(n_m2ms)) {
 			// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
 			char name[32];
-			snprintf(name, 32, "JPEG-%u", ER(n_m2ms));
-			if (type == ENCODER_TYPE_M2M_VIDEO) {
-				ER(m2ms[ER(n_m2ms)]) = m2m_mjpeg_encoder_init(name, enc->m2m_path, quality);
+			snprintf(name, 32, "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 {
-				ER(m2ms[ER(n_m2ms)]) = m2m_jpeg_encoder_init(name, enc->m2m_path, quality);
+				_ER(m2ms[_ER(n_m2ms)]) = us_m2m_jpeg_encoder_init(name, enc->m2m_path, quality);
 			}
 		}
 
-	} else if (type == ENCODER_TYPE_NOOP) {
+	} else if (type == US_ENCODER_TYPE_NOOP) {
 		n_workers = 1;
 		quality = 0;
 	}
@@ -138,32 +136,33 @@ workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev) {
 	goto ok;
 
 	use_cpu:
-		type = ENCODER_TYPE_CPU;
+		type = US_ENCODER_TYPE_CPU;
 		quality = dev->jpeg_quality;
 
 	ok:
-		if (type == ENCODER_TYPE_NOOP) {
-			LOG_INFO("Using JPEG NOOP encoder");
+		if (type == US_ENCODER_TYPE_NOOP) {
+			US_LOG_INFO("Using JPEG NOOP encoder");
 		} else if (quality == 0) {
-			LOG_INFO("Using JPEG quality: encoder default");
+			US_LOG_INFO("Using JPEG quality: encoder default");
 		} else {
-			LOG_INFO("Using JPEG quality: %u%%", quality);
+			US_LOG_INFO("Using JPEG quality: %u%%", quality);
 		}
 
-		A_MUTEX_LOCK(&ER(mutex));
-		ER(type) = type;
-		ER(quality) = quality;
+		US_MUTEX_LOCK(_ER(mutex));
+		_ER(type) = type;
+		_ER(quality) = quality;
 		if (cpu_forced) {
-			ER(cpu_forced) = true;
+			_ER(cpu_forced) = true;
 		}
-		A_MUTEX_UNLOCK(&ER(mutex));
+		US_MUTEX_UNLOCK(_ER(mutex));
 
-		long double desired_interval = 0;
-		if (dev->desired_fps > 0 && (dev->desired_fps < dev->run->hw_fps || dev->run->hw_fps == 0)) {
-			desired_interval = (long double)1 / dev->desired_fps;
-		}
+		const long double desired_interval = (
+			dev->desired_fps > 0 && (dev->desired_fps < dev->run->hw_fps || dev->run->hw_fps == 0)
+			? (long double)1 / dev->desired_fps
+			: 0
+		);
 
-		return workers_pool_init(
+		return us_workers_pool_init(
 			"JPEG", "jw", n_workers, desired_interval,
 			_worker_job_init, (void *)enc,
 			_worker_job_destroy,
@@ -172,64 +171,61 @@ workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev) {
 #	undef DR
 }
 
-void encoder_get_runtime_params(encoder_s *enc, encoder_type_e *type, unsigned *quality) {
-	A_MUTEX_LOCK(&ER(mutex));
-	*type = ER(type);
-	*quality = ER(quality);
-	A_MUTEX_UNLOCK(&ER(mutex));
+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);
+	*quality = _ER(quality);
+	US_MUTEX_UNLOCK(_ER(mutex));
 }
 
 static void *_worker_job_init(void *v_enc) {
-	encoder_job_s *job;
-	A_CALLOC(job, 1);
-	job->enc = (encoder_s *)v_enc;
-	job->dest = frame_init();
+	us_encoder_job_s *job;
+	US_CALLOC(job, 1);
+	job->enc = (us_encoder_s *)v_enc;
+	job->dest = us_frame_init();
 	return (void *)job;
 }
 
 static void _worker_job_destroy(void *v_job) {
-	encoder_job_s *job = (encoder_job_s *)v_job;
-	frame_destroy(job->dest);
+	us_encoder_job_s *job = (us_encoder_job_s *)v_job;
+	us_frame_destroy(job->dest);
 	free(job);
 }
 
-#undef ER
+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()
+	const us_frame_s *src = &job->hw->raw;
+	us_frame_s *dest = job->dest;
 
-static bool _worker_run_job(worker_s *wr) {
-	encoder_job_s *job = (encoder_job_s *)wr->job;
-	frame_s *src = &job->hw->raw;
-	frame_s *dest = job->dest;
+	assert(_ER(type) != US_ENCODER_TYPE_UNKNOWN);
 
-#	define ER(_next) job->enc->run->_next
-
-	assert(ER(type) != ENCODER_TYPE_UNKNOWN);
-
-	if (ER(type) == ENCODER_TYPE_CPU) {
-		LOG_VERBOSE("Compressing JPEG using CPU: worker=%s, buffer=%u",
+	if (_ER(type) == US_ENCODER_TYPE_CPU) {
+		US_LOG_VERBOSE("Compressing JPEG using CPU: worker=%s, buffer=%u",
 			wr->name, job->hw->buf.index);
-		cpu_encoder_compress(src, dest, ER(quality));
+		us_cpu_encoder_compress(src, dest, _ER(quality));
 
-	} else if (ER(type) == ENCODER_TYPE_HW) {
-		LOG_VERBOSE("Compressing JPEG using HW (just copying): worker=%s, buffer=%u",
+	} else if (_ER(type) == US_ENCODER_TYPE_HW) {
+		US_LOG_VERBOSE("Compressing JPEG using HW (just copying): worker=%s, buffer=%u",
 			wr->name, job->hw->buf.index);
-		hw_encoder_compress(src, dest);
+		us_hw_encoder_compress(src, dest);
 
-	} else if (ER(type) == ENCODER_TYPE_M2M_VIDEO || ER(type) == ENCODER_TYPE_M2M_IMAGE) {
-		LOG_VERBOSE("Compressing JPEG using M2M-%s: worker=%s, buffer=%u",
-			(ER(type) == ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"), wr->name, job->hw->buf.index);
-		if (m2m_encoder_compress(ER(m2ms[wr->number]), src, dest, false) < 0) {
+	} else if (_ER(type) == US_ENCODER_TYPE_M2M_VIDEO || _ER(type) == US_ENCODER_TYPE_M2M_IMAGE) {
+		US_LOG_VERBOSE("Compressing JPEG using M2M-%s: worker=%s, buffer=%u",
+			(_ER(type) == US_ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"), wr->name, job->hw->buf.index);
+		if (us_m2m_encoder_compress(_ER(m2ms[wr->number]), src, dest, false) < 0) {
 			goto error;
 		}
 
-	} else if (ER(type) == ENCODER_TYPE_NOOP) {
-		LOG_VERBOSE("Compressing JPEG using NOOP (do nothing): worker=%s, buffer=%u",
+	} else if (_ER(type) == US_ENCODER_TYPE_NOOP) {
+		US_LOG_VERBOSE("Compressing JPEG using NOOP (do nothing): worker=%s, buffer=%u",
 			wr->name, job->hw->buf.index);
-		frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
+		us_frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
 		usleep(5000); // Просто чтобы работала логика desired_fps
-		dest->encode_end_ts = get_now_monotonic(); // frame_encoding_end()
+		dest->encode_end_ts = us_get_now_monotonic(); // us_frame_encoding_end()
 	}
 
-	LOG_VERBOSE("Compressed new JPEG: size=%zu, time=%0.3Lf, worker=%s, buffer=%u",
+	US_LOG_VERBOSE("Compressed new JPEG: size=%zu, time=%0.3Lf, worker=%s, buffer=%u",
 		job->dest->used,
 		job->dest->encode_end_ts - job->dest->encode_begin_ts,
 		wr->name,
@@ -238,12 +234,10 @@ static bool _worker_run_job(worker_s *wr) {
 	return true;
 
 	error:
-		LOG_ERROR("Compression failed: worker=%s, buffer=%u", wr->name, job->hw->buf.index);
-		LOG_ERROR("Error while compressing buffer, falling back to CPU");
-		A_MUTEX_LOCK(&ER(mutex));
-		ER(cpu_forced) = true;
-		A_MUTEX_UNLOCK(&ER(mutex));
+		US_LOG_ERROR("Compression failed: worker=%s, buffer=%u", wr->name, job->hw->buf.index);
+		US_LOG_ERROR("Error while compressing buffer, falling back to CPU");
+		US_MUTEX_LOCK(_ER(mutex));
+		_ER(cpu_forced) = true;
+		US_MUTEX_UNLOCK(_ER(mutex));
 		return false;
-
-#	undef ER
 }

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    #
@@ -31,6 +31,7 @@
 #include <linux/videodev2.h>
 
 #include "../libs/tools.h"
+#include "../libs/array.h"
 #include "../libs/threading.h"
 #include "../libs/logging.h"
 #include "../libs/frame.h"
@@ -46,46 +47,46 @@
 #define ENCODER_TYPES_STR "CPU, HW, M2M-VIDEO, M2M-IMAGE, NOOP"
 
 typedef enum {
-	ENCODER_TYPE_UNKNOWN, // Only for encoder_parse_type() and main()
-	ENCODER_TYPE_CPU,
-	ENCODER_TYPE_HW,
-	ENCODER_TYPE_M2M_VIDEO,
-	ENCODER_TYPE_M2M_IMAGE,
-	ENCODER_TYPE_NOOP,
-} encoder_type_e;
+	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,
+	US_ENCODER_TYPE_M2M_IMAGE,
+	US_ENCODER_TYPE_NOOP,
+} us_encoder_type_e;
 
 typedef struct {
-	encoder_type_e	type;
-	unsigned		quality;
-	bool			cpu_forced;
-	pthread_mutex_t	mutex;
+	us_encoder_type_e	type;
+	unsigned			quality;
+	bool				cpu_forced;
+	pthread_mutex_t		mutex;
 
-	unsigned		n_m2ms;
-	m2m_encoder_s	**m2ms;
-} encoder_runtime_s;
+	unsigned			n_m2ms;
+	us_m2m_encoder_s	**m2ms;
+} us_encoder_runtime_s;
 
 typedef struct {
-	encoder_type_e	type;
-	unsigned		n_workers;
-	char			*m2m_path;
+	us_encoder_type_e	type;
+	unsigned			n_workers;
+	char				*m2m_path;
 
-	encoder_runtime_s *run;
-} encoder_s;
+	us_encoder_runtime_s *run;
+} us_encoder_s;
 
 typedef struct {
-	encoder_s	*enc;
-	hw_buffer_s	*hw;
-	frame_s		*dest;
-} encoder_job_s;
+	us_encoder_s	*enc;
+	us_hw_buffer_s	*hw;
+	us_frame_s		*dest;
+} us_encoder_job_s;
 
 
-encoder_s *encoder_init(void);
-void encoder_destroy(encoder_s *enc);
+us_encoder_s *us_encoder_init(void);
+void us_encoder_destroy(us_encoder_s *enc);
 
-encoder_type_e encoder_parse_type(const char *str);
-const char *encoder_type_to_string(encoder_type_e type);
+us_encoder_type_e us_encoder_parse_type(const char *str);
+const char *us_encoder_type_to_string(us_encoder_type_e type);
 
-workers_pool_s *encoder_workers_pool_init(encoder_s *enc, device_s *dev);
-void encoder_get_runtime_params(encoder_s *enc, encoder_type_e *type, unsigned *quality);
+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);
 
-int encoder_compress(encoder_s *enc, unsigned worker_number, frame_s *src, frame_s *dest);
+int us_encoder_compress(us_encoder_s *enc, unsigned worker_number, us_frame_s *src, us_frame_s *dest);

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    #
@@ -31,26 +31,27 @@
 typedef struct {
 	struct	jpeg_destination_mgr mgr; // Default manager
 	JOCTET	*buf; // Start of buffer
-	frame_s	*frame;
+	us_frame_s	*frame;
 } _jpeg_dest_manager_s;
 
 
-static void _jpeg_set_dest_frame(j_compress_ptr jpeg, frame_s *frame);
+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 frame_s *frame);
-static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const frame_s *frame);
-static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const frame_s *frame);
-static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const 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_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);
 static void _jpeg_term_destination(j_compress_ptr jpeg);
 
 
-void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality) {
+void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned quality) {
 	// This function based on compress_image_to_jpeg() from mjpg-streamer
 
-	frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
+	us_frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
 
 	struct jpeg_compress_struct jpeg;
 	struct jpeg_error_mgr jpeg_error;
@@ -63,15 +64,15 @@ void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality) {
 	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(_format, _func) \
-		case _format: { _func(&jpeg, src); break; }
+#	define WRITE_SCANLINES(x_format, x_func) \
+		case x_format: { x_func(&jpeg, src); break; }
 
 	switch (src->format) {
 		// https://www.fourcc.org/yuv.php
@@ -79,6 +80,7 @@ void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality) {
 		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);
+		WRITE_SCANLINES(V4L2_PIX_FMT_BGR24, _jpeg_write_scanlines_bgr24);
 		default: assert(0 && "Unsupported input format for CPU encoder");
 	}
 
@@ -87,17 +89,17 @@ void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality) {
 	jpeg_finish_compress(&jpeg);
 	jpeg_destroy_compress(&jpeg);
 
-	frame_encoding_end(dest);
+	us_frame_encoding_end(dest);
 }
 
-static void _jpeg_set_dest_frame(j_compress_ptr jpeg, frame_s *frame) {
+static void _jpeg_set_dest_frame(j_compress_ptr jpeg, us_frame_s *frame) {
 	if (jpeg->dest == NULL) {
 		assert((jpeg->dest = (struct jpeg_destination_mgr *)(*jpeg->mem->alloc_small)(
 			(j_common_ptr) jpeg, JPOOL_PERMANENT, sizeof(_jpeg_dest_manager_s)
-		)));
+		)) != NULL);
 	}
 
-	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
+	_jpeg_dest_manager_s *const dest = (_jpeg_dest_manager_s *)jpeg->dest;
 	dest->mgr.init_destination = _jpeg_init_destination;
 	dest->mgr.empty_output_buffer = _jpeg_empty_output_buffer;
 	dest->mgr.term_destination = _jpeg_term_destination;
@@ -106,39 +108,29 @@ static void _jpeg_set_dest_frame(j_compress_ptr jpeg, 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 frame_s *frame) {
+static void _jpeg_write_scanlines_yuyv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
 	uint8_t *line_buf;
-	A_CALLOC(line_buf, frame->width * 3);
+	US_CALLOC(line_buf, frame->width * 3);
 
-	const unsigned padding = frame_get_padding(frame);
+	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) {
-			int y = (!z ? data[0] << 8 : data[2] << 8);
-			int u = data[1] - 128;
-			int v = data[3] - 128;
+			// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-yuyv.html
+			const bool is_odd_pixel = x & 1;
+			const uint8_t y = data[is_odd_pixel ? 2 : 0];
+			const uint8_t u = data[1];
+			const uint8_t v = data[3];
 
-			int r = YUV_R(y, u, v);
-			int g = YUV_G(y, u, v);
-			int b = YUV_B(y, u, v);
+			ptr[0] = y;
+			ptr[1] = u;
+			ptr[2] = v;
+			ptr += 3;
 
-			*(ptr++) = NORM_COMPONENT(r);
-			*(ptr++) = NORM_COMPONENT(g);
-			*(ptr++) = NORM_COMPONENT(b);
-
-			if (z++) {
-				z = 0;
-				data += 4;
-			}
+			data += (is_odd_pixel ? 4: 0);
 		}
 		data += padding;
 
@@ -149,34 +141,29 @@ 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 frame_s *frame) {
+static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
 	uint8_t *line_buf;
-	A_CALLOC(line_buf, frame->width * 3);
+	US_CALLOC(line_buf, frame->width * 3);
 
-	const unsigned padding = frame_get_padding(frame);
+	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) {
-			int y = (!z ? data[1] << 8 : data[3] << 8);
-			int u = data[0] - 128;
-			int v = data[2] - 128;
+			// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-uyvy.html
+			const bool is_odd_pixel = x & 1;
+			const uint8_t y = data[is_odd_pixel ? 3 : 1];
+			const uint8_t u = data[0];
+			const uint8_t v = data[2];
 
-			int r = YUV_R(y, u, v);
-			int g = YUV_G(y, u, v);
-			int b = YUV_B(y, u, v);
+			ptr[0] = y;
+			ptr[1] = u;
+			ptr[2] = v;
+			ptr += 3;
 
-			*(ptr++) = NORM_COMPONENT(r);
-			*(ptr++) = NORM_COMPONENT(g);
-			*(ptr++) = NORM_COMPONENT(b);
-
-			if (z++) {
-				z = 0;
-				data += 4;
-			}
+			data += (is_odd_pixel ? 4 : 0);
 		}
 		data += padding;
 
@@ -187,27 +174,23 @@ static void _jpeg_write_scanlines_uyvy(struct jpeg_compress_struct *jpeg, const
 	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 frame_s *frame) {
+static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
 	uint8_t *line_buf;
-	A_CALLOC(line_buf, frame->width * 3);
+	US_CALLOC(line_buf, frame->width * 3);
 
-	const unsigned padding = frame_get_padding(frame);
+	const unsigned padding = us_frame_get_padding(frame);
 	const uint8_t *data = frame->data;
 
 	while (jpeg->next_scanline < frame->height) {
 		uint8_t *ptr = line_buf;
 
 		for (unsigned x = 0; x < frame->width; ++x) {
-			unsigned int two_byte = (data[1] << 8) + data[0];
+			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;
 		}
@@ -220,27 +203,54 @@ static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, cons
 	free(line_buf);
 }
 
-static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const frame_s *frame) {
-	const unsigned padding = frame_get_padding(frame);
+static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
+	const unsigned padding = us_frame_get_padding(frame);
 	uint8_t *data = frame->data;
 
 	while (jpeg->next_scanline < frame->height) {
 		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) {
-	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
+	_jpeg_dest_manager_s *const dest = (_jpeg_dest_manager_s *)jpeg->dest;
 
 	// Allocate the output buffer - it will be released when done with image
 	assert((dest->buf = (JOCTET *)(*jpeg->mem->alloc_small)(
 		(j_common_ptr) jpeg, JPOOL_IMAGE, JPEG_OUTPUT_BUFFER_SIZE * sizeof(JOCTET)
-	)));
+	)) != NULL);
 
 	dest->mgr.next_output_byte = dest->buf;
 	dest->mgr.free_in_buffer = JPEG_OUTPUT_BUFFER_SIZE;
@@ -249,9 +259,9 @@ static void _jpeg_init_destination(j_compress_ptr jpeg) {
 static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg) {
 	// Called whenever local jpeg buffer fills up
 
-	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
+	_jpeg_dest_manager_s *const dest = (_jpeg_dest_manager_s *)jpeg->dest;
 
-	frame_append_data(dest->frame, dest->buf, JPEG_OUTPUT_BUFFER_SIZE);
+	us_frame_append_data(dest->frame, dest->buf, JPEG_OUTPUT_BUFFER_SIZE);
 
 	dest->mgr.next_output_byte = dest->buf;
 	dest->mgr.free_in_buffer = JPEG_OUTPUT_BUFFER_SIZE;
@@ -263,11 +273,11 @@ static void _jpeg_term_destination(j_compress_ptr jpeg) {
 	// Called by jpeg_finish_compress after all data has been written.
 	// Usually needs to flush buffer.
 
-	_jpeg_dest_manager_s *dest = (_jpeg_dest_manager_s *)jpeg->dest;
-	size_t final = JPEG_OUTPUT_BUFFER_SIZE - dest->mgr.free_in_buffer;
+	_jpeg_dest_manager_s *const dest = (_jpeg_dest_manager_s *)jpeg->dest;
+	const size_t final = JPEG_OUTPUT_BUFFER_SIZE - dest->mgr.free_in_buffer;
 
 	// Write any data remaining in the buffer.
-	frame_append_data(dest->frame, dest->buf, final);
+	us_frame_append_data(dest->frame, dest->buf, final);
 }
 
 #undef JPEG_OUTPUT_BUFFER_SIZE

src/ustreamer/encoders/cpu/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    #
@@ -35,4 +35,4 @@
 #include "../../../libs/frame.h"
 
 
-void cpu_encoder_compress(const frame_s *src, frame_s *dest, unsigned quality);
+void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned quality);

src/ustreamer/encoders/hw/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    #
@@ -28,21 +28,21 @@
 #include "encoder.h"
 
 
-void _copy_plus_huffman(const frame_s *src, frame_s *dest);
+void _copy_plus_huffman(const us_frame_s *src, us_frame_s *dest);
 static bool _is_huffman(const uint8_t *data);
 
 
-void hw_encoder_compress(const frame_s *src, frame_s *dest) {
-	assert(is_jpeg(src->format));
+void us_hw_encoder_compress(const us_frame_s *src, us_frame_s *dest) {
+	assert(us_is_jpeg(src->format));
 	_copy_plus_huffman(src, dest);
 }
 
-void _copy_plus_huffman(const frame_s *src, frame_s *dest) {
-	frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
+void _copy_plus_huffman(const us_frame_s *src, us_frame_s *dest) {
+	us_frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
 
 	if (!_is_huffman(src->data)) {
 		const uint8_t *src_ptr = src->data;
-		const uint8_t *src_end = src->data + src->used;
+		const uint8_t *const src_end = src->data + src->used;
 
 		while ((((src_ptr[0] << 8) | src_ptr[1]) != 0xFFC0) && (src_ptr < src_end)) {
 			src_ptr += 1;
@@ -54,15 +54,15 @@ void _copy_plus_huffman(const frame_s *src, frame_s *dest) {
 
 		const size_t paste = src_ptr - src->data;
 
-		frame_set_data(dest, src->data, paste);
-		frame_append_data(dest, HUFFMAN_TABLE, sizeof(HUFFMAN_TABLE));
-		frame_append_data(dest, src_ptr, src->used - paste);
+		us_frame_set_data(dest, src->data, paste);
+		us_frame_append_data(dest, US_HUFFMAN_TABLE, sizeof(US_HUFFMAN_TABLE));
+		us_frame_append_data(dest, src_ptr, src->used - paste);
 
 	} else {
-		frame_set_data(dest, src->data, src->used);
+		us_frame_set_data(dest, src->data, src->used);
 	}
 
-	frame_encoding_end(dest);
+	us_frame_encoding_end(dest);
 }
 
 static bool _is_huffman(const uint8_t *data) {

src/ustreamer/encoders/hw/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    #
@@ -34,4 +34,4 @@
 #include "huffman.h"
 
 
-void hw_encoder_compress(const frame_s *src, frame_s *dest);
+void us_hw_encoder_compress(const us_frame_s *src, us_frame_s *dest);

src/ustreamer/encoders/hw/huffman.h

@@ -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    #
@@ -30,7 +30,7 @@
 #include <stdint.h>
 
 
-static const uint8_t HUFFMAN_TABLE[] = {
+static const uint8_t US_HUFFMAN_TABLE[] = {
 	0xFF, 0xC4, 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
 	0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02,
 	0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x01, 0x00, 0x03,

src/ustreamer/gpio/gpio.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    #
@@ -23,13 +23,13 @@
 #include "gpio.h"
 
 
-gpio_s us_gpio = {
+us_gpio_s us_g_gpio = {
 	.path = "/dev/gpiochip0",
 	.consumer_prefix = "ustreamer",
 
-#	define MAKE_OUTPUT(_role) { \
+#	define MAKE_OUTPUT(x_role) { \
 		.pin = -1, \
-		.role = _role, \
+		.role = x_role, \
 		.consumer = NULL, \
 		.line = NULL, \
 		.state = false \
@@ -46,82 +46,82 @@ gpio_s us_gpio = {
 };
 
 
-static void _gpio_output_init(gpio_output_s *output);
-static void _gpio_output_destroy(gpio_output_s *output);
+static void _gpio_output_init(us_gpio_output_s *output);
+static void _gpio_output_destroy(us_gpio_output_s *output);
 
 
-void gpio_init(void) {
-	assert(us_gpio.chip == NULL);
+void us_gpio_init(void) {
+	assert(us_g_gpio.chip == NULL);
 	if (
-		us_gpio.prog_running.pin >= 0
-		|| us_gpio.stream_online.pin >= 0
-		|| us_gpio.has_http_clients.pin >= 0
+		us_g_gpio.prog_running.pin >= 0
+		|| us_g_gpio.stream_online.pin >= 0
+		|| us_g_gpio.has_http_clients.pin >= 0
 	) {
-		A_MUTEX_INIT(&us_gpio.mutex);
-		LOG_INFO("GPIO: Using chip device: %s", us_gpio.path);
-		if ((us_gpio.chip = gpiod_chip_open(us_gpio.path)) != NULL) {
-			_gpio_output_init(&us_gpio.prog_running);
-			_gpio_output_init(&us_gpio.stream_online);
-			_gpio_output_init(&us_gpio.has_http_clients);
+		US_MUTEX_INIT(us_g_gpio.mutex);
+		US_LOG_INFO("GPIO: Using chip device: %s", us_g_gpio.path);
+		if ((us_g_gpio.chip = gpiod_chip_open(us_g_gpio.path)) != NULL) {
+			_gpio_output_init(&us_g_gpio.prog_running);
+			_gpio_output_init(&us_g_gpio.stream_online);
+			_gpio_output_init(&us_g_gpio.has_http_clients);
 		} else {
-			LOG_PERROR("GPIO: Can't initialize chip device %s", us_gpio.path);
+			US_LOG_PERROR("GPIO: Can't initialize chip device %s", us_g_gpio.path);
 		}
 	}
 }
 
-void gpio_destroy(void) {
-	_gpio_output_destroy(&us_gpio.prog_running);
-	_gpio_output_destroy(&us_gpio.stream_online);
-	_gpio_output_destroy(&us_gpio.has_http_clients);
-	if (us_gpio.chip) {
-		gpiod_chip_close(us_gpio.chip);
-		us_gpio.chip = NULL;
-		A_MUTEX_DESTROY(&us_gpio.mutex);
+void us_gpio_destroy(void) {
+	_gpio_output_destroy(&us_g_gpio.prog_running);
+	_gpio_output_destroy(&us_g_gpio.stream_online);
+	_gpio_output_destroy(&us_g_gpio.has_http_clients);
+	if (us_g_gpio.chip != NULL) {
+		gpiod_chip_close(us_g_gpio.chip);
+		us_g_gpio.chip = NULL;
+		US_MUTEX_DESTROY(us_g_gpio.mutex);
 	}
 }
 
-int gpio_inner_set(gpio_output_s *output, bool state) {
+int us_gpio_inner_set(us_gpio_output_s *output, bool state) {
 	int retval = 0;
 
-	assert(us_gpio.chip);
-	assert(output->line);
+	assert(us_g_gpio.chip != NULL);
+	assert(output->line != NULL);
 	assert(output->state != state); // Must be checked in macro for the performance
-	A_MUTEX_LOCK(&us_gpio.mutex);
+	US_MUTEX_LOCK(us_g_gpio.mutex);
 
 	if (gpiod_line_set_value(output->line, (int)state) < 0) { \
-		LOG_PERROR("GPIO: Can't write value %d to line %s (will be disabled)", state, output->consumer); \
+		US_LOG_PERROR("GPIO: Can't write value %d to line %s (will be disabled)", state, output->consumer); \
 		_gpio_output_destroy(output);
 		retval = -1;
 	}
 
-	A_MUTEX_UNLOCK(&us_gpio.mutex);
+	US_MUTEX_UNLOCK(us_g_gpio.mutex);
 	return retval;
 }
 
-static void _gpio_output_init(gpio_output_s *output) {
-	assert(us_gpio.chip);
+static void _gpio_output_init(us_gpio_output_s *output) {
+	assert(us_g_gpio.chip != NULL);
 	assert(output->line == NULL);
 
-	A_ASPRINTF(output->consumer, "%s::%s", us_gpio.consumer_prefix, output->role);
+	US_ASPRINTF(output->consumer, "%s::%s", us_g_gpio.consumer_prefix, output->role);
 
 	if (output->pin >= 0) {
-		if ((output->line = gpiod_chip_get_line(us_gpio.chip, output->pin)) != NULL) {
+		if ((output->line = gpiod_chip_get_line(us_g_gpio.chip, output->pin)) != NULL) {
 			if (gpiod_line_request_output(output->line, output->consumer, 0) < 0) {
-				LOG_PERROR("GPIO: Can't request pin=%d as %s", output->pin, output->consumer);
+				US_LOG_PERROR("GPIO: Can't request pin=%d as %s", output->pin, output->consumer);
 				_gpio_output_destroy(output);
 			}
 		} else {
-			LOG_PERROR("GPIO: Can't get pin=%d as %s", output->pin, output->consumer);
+			US_LOG_PERROR("GPIO: Can't get pin=%d as %s", output->pin, output->consumer);
 		}
 	}
 }
 
-static void _gpio_output_destroy(gpio_output_s *output) {
-	if (output->line) {
+static void _gpio_output_destroy(us_gpio_output_s *output) {
+	if (output->line != NULL) {
 		gpiod_line_release(output->line);
 		output->line = NULL;
 	}
-	if (output->consumer) {
+	if (output->consumer != NULL) {
 		free(output->consumer);
 		output->consumer = NULL;
 	}

src/ustreamer/gpio/gpio.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    #
@@ -41,47 +41,47 @@ typedef struct {
 	char 				*consumer;
 	struct gpiod_line	*line;
 	bool				state;
-} gpio_output_s;
+} us_gpio_output_s;
 
 typedef struct {
-	char *path;
-	char *consumer_prefix;
+	char	*path;
+	char	*consumer_prefix;
 
-	gpio_output_s prog_running;
-	gpio_output_s stream_online;
-	gpio_output_s has_http_clients;
+	us_gpio_output_s	prog_running;
+	us_gpio_output_s	stream_online;
+	us_gpio_output_s	has_http_clients;
 
 	pthread_mutex_t		mutex;
 	struct gpiod_chip	*chip;
-} gpio_s;
+} us_gpio_s;
 
 
-extern gpio_s us_gpio;
+extern us_gpio_s us_g_gpio;
 
 
-void gpio_init(void);
-void gpio_destroy(void);
-int gpio_inner_set(gpio_output_s *output, bool state);
+void us_gpio_init(void);
+void us_gpio_destroy(void);
+int us_gpio_inner_set(us_gpio_output_s *output, bool state);
 
 
-#define SET_STATE(_output, _state) { \
-		if (_output.line && _output.state != _state) { \
-			if (!gpio_inner_set(&_output, _state)) { \
-				_output.state = _state; \
+#define SET_STATE(x_output, x_state) { \
+		if (x_output.line && x_output.state != x_state) { \
+			if (!us_gpio_inner_set(&x_output, x_state)) { \
+				x_output.state = x_state; \
 			} \
 		} \
 	}
 
-INLINE void gpio_set_prog_running(bool state) {
-	SET_STATE(us_gpio.prog_running, state);
+INLINE void us_gpio_set_prog_running(bool state) {
+	SET_STATE(us_g_gpio.prog_running, state);
 }
 
-INLINE void gpio_set_stream_online(bool state) {
-	SET_STATE(us_gpio.stream_online, state);
+INLINE void us_gpio_set_stream_online(bool state) {
+	SET_STATE(us_g_gpio.stream_online, state);
 }
 
-INLINE void gpio_set_has_http_clients(bool state) {
-	SET_STATE(us_gpio.has_http_clients, state);
+INLINE void us_gpio_set_has_http_clients(bool state) {
+	SET_STATE(us_g_gpio.has_http_clients, state);
 }
 
 #undef SET_STATE

src/ustreamer/h264.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    #
@@ -20,45 +20,51 @@
 *****************************************************************************/
 
 
-#include "stream.h"
+#include "h264.h"
 
 
-h264_stream_s *h264_stream_init(memsink_s *sink, const char *path, unsigned bitrate, unsigned gop) {
-	h264_stream_s *h264;
-	A_CALLOC(h264, 1);
+us_h264_stream_s *us_h264_stream_init(us_memsink_s *sink, const char *path, unsigned bitrate, unsigned gop) {
+	us_h264_stream_s *h264;
+	US_CALLOC(h264, 1);
 	h264->sink = sink;
-	h264->tmp_src = frame_init();
-	h264->dest = frame_init();
+	h264->tmp_src = us_frame_init();
+	h264->dest = us_frame_init();
 	atomic_init(&h264->online, false);
-	h264->enc = m2m_h264_encoder_init("H264", path, bitrate, gop);
+	h264->enc = us_m2m_h264_encoder_init("H264", path, bitrate, gop);
 	return h264;
 }
 
-void h264_stream_destroy(h264_stream_s *h264) {
-	m2m_encoder_destroy(h264->enc);
-	frame_destroy(h264->dest);
-	frame_destroy(h264->tmp_src);
+void us_h264_stream_destroy(us_h264_stream_s *h264) {
+	us_m2m_encoder_destroy(h264->enc);
+	us_frame_destroy(h264->dest);
+	us_frame_destroy(h264->tmp_src);
 	free(h264);
 }
 
-void h264_stream_process(h264_stream_s *h264, const frame_s *frame, bool force_key) {
-	if (!memsink_server_check(h264->sink, frame)) {
+void us_h264_stream_process(us_h264_stream_s *h264, const us_frame_s *frame, bool force_key) {
+	if (!us_memsink_server_check(h264->sink, frame)) {
 		return;
 	}
 
-	if (is_jpeg(frame->format)) {
-		long double now = get_now_monotonic();
-		LOG_DEBUG("H264: Input frame is JPEG; decoding ...");
-		if (unjpeg(frame, h264->tmp_src, true) < 0) {
+	if (us_is_jpeg(frame->format)) {
+		const long double now = us_get_now_monotonic();
+		US_LOG_DEBUG("H264: Input frame is JPEG; decoding ...");
+		if (us_unjpeg(frame, h264->tmp_src, true) < 0) {
 			return;
 		}
 		frame = h264->tmp_src;
-		LOG_VERBOSE("H264: JPEG decoded; time=%.3Lf", get_now_monotonic() - now);
+		US_LOG_VERBOSE("H264: JPEG decoded; time=%.3Lf", us_get_now_monotonic() - now);
+	}
+
+	if (h264->key_requested) {
+		US_LOG_INFO("H264: Requested keyframe by a sink client");
+		h264->key_requested = false;
+		force_key = true;
 	}
 
 	bool online = false;
-	if (!m2m_encoder_compress(h264->enc, frame, h264->dest, force_key)) {
-		online = !memsink_server_put(h264->sink, h264->dest);
+	if (!us_m2m_encoder_compress(h264->enc, frame, h264->dest, force_key)) {
+		online = !us_memsink_server_put(h264->sink, h264->dest, &h264->key_requested);
 	}
 	atomic_store(&h264->online, online);
 }

src/ustreamer/h264.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    #
@@ -26,23 +26,24 @@
 #include <stdatomic.h>
 #include <assert.h>
 
-#include "../../libs/tools.h"
-#include "../../libs/logging.h"
-#include "../../libs/frame.h"
-#include "../../libs/memsink.h"
-#include "../../libs/unjpeg.h"
-#include "../m2m.h"
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/frame.h"
+#include "../libs/memsink.h"
+#include "../libs/unjpeg.h"
+#include "m2m.h"
 
 
 typedef struct {
-	memsink_s		*sink;
-	frame_s			*tmp_src;
-	frame_s			*dest;
-	m2m_encoder_s	*enc;
-	atomic_bool		online;
-} h264_stream_s;
+	us_memsink_s		*sink;
+	bool				key_requested;
+	us_frame_s			*tmp_src;
+	us_frame_s			*dest;
+	us_m2m_encoder_s	*enc;
+	atomic_bool			online;
+} us_h264_stream_s;
 
 
-h264_stream_s *h264_stream_init(memsink_s *sink, const char *path, unsigned bitrate, unsigned gop);
-void h264_stream_destroy(h264_stream_s *h264);
-void h264_stream_process(h264_stream_s *h264, const frame_s *frame, bool force_key);
+us_h264_stream_s *us_h264_stream_init(us_memsink_s *sink, const char *path, unsigned bitrate, unsigned gop);
+void us_h264_stream_destroy(us_h264_stream_s *h264);
+void us_h264_stream_process(us_h264_stream_s *h264, const us_frame_s *frame, bool force_key);

src/ustreamer/http/bev.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    #
@@ -23,25 +23,26 @@
 #include "bev.h"
 
 
-char *bufferevent_my_format_reason(short what) {
+char *us_bufferevent_format_reason(short what) {
 	char *reason;
-	A_CALLOC(reason, 2048);
+	US_CALLOC(reason, 2048);
 
-	char perror_buf[1024] = {0};
-	char *perror_ptr = errno_to_string(EVUTIL_SOCKET_ERROR(), perror_buf, 1024); // evutil_socket_error_to_string() is not thread-safe
+	// evutil_socket_error_to_string() is not thread-safe
+	char *const perror_str = us_errno_to_string(EVUTIL_SOCKET_ERROR());
 	bool first = true;
 
-	strcat(reason, perror_ptr);
+	strcat(reason, perror_str);
+	free(perror_str);
 	strcat(reason, " (");
 
-#	define FILL_REASON(_bev, _name) { \
-			if (what & _bev) { \
+#	define FILL_REASON(x_bev, x_name) { \
+			if (what & x_bev) { \
 				if (first) { \
 					first = false; \
 				} else { \
 					strcat(reason, ","); \
 				} \
-				strcat(reason, _name); \
+				strcat(reason, x_name); \
 			} \
 		}