Bump version: 6.47 → 6.48

for video.

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 6.21
+current_version = 6.48
 parse = (?P<major>\d+)\.(?P<minor>\d+)
 serialize = 
 	{major}.{minor}

Makefile

@@ -1,43 +1,64 @@
 -include config.mk
 
+
+# =====
 DESTDIR ?=
 PREFIX ?= /usr/local
 MANPREFIX ?= $(PREFIX)/share/man
 
 CC ?= gcc
 PY ?= python3
+PKG_CONFIG ?= pkg-config
 CFLAGS ?= -O3
 LDFLAGS ?=
 
 R_DESTDIR = $(if $(DESTDIR),$(shell realpath "$(DESTDIR)"),)
 
+WITH_PYTHON ?= 0
+WITH_JANUS ?= 0
+WITH_V4P ?= 0
+WITH_GPIO ?= 0
+WITH_SYSTEMD ?= 0
+WITH_PTHREAD_NP ?= 1
+WITH_SETPROCTITLE ?= 1
+WITH_PDEATHSIG ?= 1
+
+define optbool
+$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
+endef
+MK_WITH_PYTHON = $(call optbool,$(WITH_PYTHON))
+MK_WITH_JANUS = $(call optbool,$(WITH_JANUS))
+MK_WITH_V4P = $(call optbool,$(WITH_V4P))
+MK_WITH_GPIO = $(call optbool,$(WITH_GPIO))
+MK_WITH_SYSTEMD = $(call optbool,$(WITH_SYSTEMD))
+MK_WITH_PTHREAD_NP = $(call optbool,$(WITH_PTHREAD_NP))
+MK_WITH_SETPROCTITLE = $(call optbool,$(WITH_SETPROCTITLE))
+MK_WITH_PDEATHSIG = $(call optbool,$(WITH_PDEATHSIG))
+
 export
 
 _LINTERS_IMAGE ?= ustreamer-linters
 
 
 # =====
-ifeq (__not_found__,$(shell which pkg-config 2>/dev/null || echo "__not_found__"))
-$(error "No pkg-config found in $(PATH)")
+ifeq (__not_found__,$(shell which $(PKG_CONFIG) 2>/dev/null || echo "__not_found__"))
+$(error "No $(PKG_CONFIG) found in $(PATH)")
 endif
 
 
 # =====
-define optbool
-$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
-endef
-
 ifeq ($(V),)
 	ECHO = @
 endif
 
+
 # =====
 all:
 	+ $(MAKE) apps
-ifneq ($(call optbool,$(WITH_PYTHON)),)
+ifneq ($(MK_WITH_PYTHON),)
 	+ $(MAKE) python
 endif
-ifneq ($(call optbool,$(WITH_JANUS)),)
+ifneq ($(MK_WITH_JANUS),)
 	+ $(MAKE) janus
 endif
 
@@ -61,10 +82,10 @@ janus:
 
 install: all
 	$(MAKE) -C src install
-ifneq ($(call optbool,$(WITH_PYTHON)),)
+ifneq ($(MK_WITH_PYTHON),)
 	$(MAKE) -C python install
 endif
-ifneq ($(call optbool,$(WITH_JANUS)),)
+ifneq ($(MK_WITH_JANUS),)
 	$(MAKE) -C janus install
 endif
 	mkdir -p $(R_DESTDIR)$(MANPREFIX)/man1

README.md

@@ -11,7 +11,7 @@
 |----------|---------------|-------------------|
 | Multithreaded JPEG encoding | ✔ | ✘ |
 | Hardware image encoding<br>on Raspberry Pi | ✔ | ✘ |
-| Behavior when the device<br>is disconnected while streaming | ✔ Shows a black screen<br>with ```NO SIGNAL``` on it<br>until reconnected | ✘ Stops the streaming <sup>1</sup> |
+| Behavior when the device<br>is disconnected while streaming | ✔ Shows a black screen<br>with ```NO LIVE VIDEO``` on it<br>until reconnected | ✘ Stops the streaming <sup>1</sup> |
 | [DV-timings](https://linuxtv.org/downloads/v4l-dvb-apis-new/userspace-api/v4l/dv-timings.html) support -<br>the ability to change resolution<br>on the fly by source signal | ✔ | ☹ Partially yes <sup>1</sup> |
 | Option to skip frames when streaming<br>static images by HTTP to save the traffic | ✔ <sup>2</sup> | ✘ |
 | Streaming via UNIX domain socket | ✔ | ✘ |
@@ -44,7 +44,7 @@ You need to download the µStreamer onto your system and build it from the sourc
 * 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).
+You'll need  ```make```, ```gcc```, ```pkg-config```, ```libevent``` with ```pthreads``` support, ```libjpeg9```/```libjpeg-turbo``` and ```libbsd``` (only for Linux).
 
 * Arch: `sudo pacman -S libevent libjpeg-turbo libutil-linux libbsd`.
 * 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`.

janus/Makefile

@@ -2,6 +2,7 @@ R_DESTDIR ?=
 PREFIX ?= /usr/local
 
 CC ?= gcc
+PKG_CONFIG ?= pkg-config
 CFLAGS ?= -O3
 LDFLAGS ?=
 
@@ -9,21 +10,20 @@ LDFLAGS ?=
 # =====
 _PLUGIN = libjanus_ustreamer.so
 
-_CFLAGS = -fPIC -MD -c -std=c17 -Wall -Wextra -D_GNU_SOURCE $(shell pkg-config --cflags glib-2.0) $(CFLAGS)
-_LDFLAGS = -shared -lm -pthread -lrt -ljansson -lopus -lasound -lspeexdsp $(shell pkg-config --libs glib-2.0) $(LDFLAGS)
+_CFLAGS = -fPIC -MD -c -std=c17 -Wall -Wextra -D_GNU_SOURCE $(shell $(PKG_CONFIG) --cflags janus-gateway) $(CFLAGS)
+_LDFLAGS = -shared -lm -pthread -lrt -ljansson -lopus -lasound -lspeexdsp $(shell $(PKG_CONFIG) --libs janus-gateway) $(LDFLAGS)
 
 _SRCS = $(shell ls src/uslibs/*.c src/*.c)
 
 _BUILD = build
 
 
-define optbool
-$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
-endef
+# =====
+ifneq ($(shell sh -c 'uname 2>/dev/null || echo Unknown'),FreeBSD)
+override _LDFLAGS += -latomic
+endif
 
-
-WITH_PTHREAD_NP ?= 1
-ifneq ($(call optbool,$(WITH_PTHREAD_NP)),)
+ifneq ($(MK_WITH_PTHREAD_NP),)
 override _CFLAGS += -DWITH_PTHREAD_NP
 endif
 

janus/src/acap.c

@@ -0,0 +1,243 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2024  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 "acap.h"
+
+#include <stdlib.h>
+#include <stdatomic.h>
+#include <assert.h>
+
+#include <pthread.h>
+#include <alsa/asoundlib.h>
+#include <speex/speex_resampler.h>
+#include <opus/opus.h>
+
+#include "uslibs/types.h"
+#include "uslibs/errors.h"
+#include "uslibs/tools.h"
+#include "uslibs/array.h"
+#include "uslibs/ring.h"
+#include "uslibs/threading.h"
+
+#include "rtp.h"
+#include "au.h"
+#include "logging.h"
+
+
+static void *_pcm_thread(void *v_acap);
+static void *_encoder_thread(void *v_acap);
+
+
+us_acap_s *us_acap_init(const char *name, uint pcm_hz) {
+	us_acap_s *acap;
+	US_CALLOC(acap, 1);
+	acap->pcm_hz = pcm_hz;
+	US_RING_INIT_WITH_ITEMS(acap->pcm_ring, 8, us_au_pcm_init);
+	US_RING_INIT_WITH_ITEMS(acap->enc_ring, 8, us_au_encoded_init);
+	atomic_init(&acap->stop, false);
+
+	int err;
+
+	{
+		if ((err = snd_pcm_open(&acap->dev, name, SND_PCM_STREAM_CAPTURE, 0)) < 0) {
+			acap->dev = NULL;
+			US_JLOG_PERROR_ALSA(err, "acap", "Can't open PCM capture");
+			goto error;
+		}
+		assert(!snd_pcm_hw_params_malloc(&acap->dev_params));
+
+#		define SET_PARAM(_msg, _func, ...) { \
+				if ((err = _func(acap->dev, acap->dev_params, ##__VA_ARGS__)) < 0) { \
+					US_JLOG_PERROR_ALSA(err, "acap", _msg); \
+					goto error; \
+				} \
+			}
+
+		SET_PARAM("Can't initialize PCM params",	snd_pcm_hw_params_any);
+		SET_PARAM("Can't set PCM access type",		snd_pcm_hw_params_set_access, SND_PCM_ACCESS_RW_INTERLEAVED);
+		SET_PARAM("Can't set PCM channels number",	snd_pcm_hw_params_set_channels, US_RTP_OPUS_CH);
+		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, &acap->pcm_hz, 0);
+		if (acap->pcm_hz < US_AU_MIN_PCM_HZ || acap->pcm_hz > US_AU_MAX_PCM_HZ) {
+			US_JLOG_ERROR("acap", "Unsupported PCM freq: %u; should be: %u <= F <= %u",
+				acap->pcm_hz, US_AU_MIN_PCM_HZ, US_AU_MAX_PCM_HZ);
+			goto error;
+		}
+		acap->pcm_frames = US_AU_HZ_TO_FRAMES(acap->pcm_hz);
+		acap->pcm_size = US_AU_HZ_TO_BUF8(acap->pcm_hz);
+		SET_PARAM("Can't apply PCM params", snd_pcm_hw_params);
+
+#		undef SET_PARAM
+	}
+
+	if (acap->pcm_hz != US_RTP_OPUS_HZ) {
+		acap->res = speex_resampler_init(US_RTP_OPUS_CH, acap->pcm_hz, US_RTP_OPUS_HZ, SPEEX_RESAMPLER_QUALITY_DESKTOP, &err);
+		if (err < 0) {
+			acap->res = NULL;
+			US_JLOG_PERROR_RES(err, "acap", "Can't create resampler");
+			goto error;
+		}
+	}
+
+	{
+		// OPUS_APPLICATION_VOIP, OPUS_APPLICATION_RESTRICTED_LOWDELAY
+		acap->enc = opus_encoder_create(US_RTP_OPUS_HZ, US_RTP_OPUS_CH, OPUS_APPLICATION_AUDIO, &err);
+		assert(err == 0);
+		// https://github.com/meetecho/janus-gateway/blob/3cdd6ff/src/plugins/janus_audiobridge.c#L2272
+		// https://datatracker.ietf.org/doc/html/rfc7587#section-3.1.1
+		assert(!opus_encoder_ctl(acap->enc, OPUS_SET_BITRATE(128000)));
+		assert(!opus_encoder_ctl(acap->enc, OPUS_SET_MAX_BANDWIDTH(OPUS_BANDWIDTH_FULLBAND)));
+		assert(!opus_encoder_ctl(acap->enc, OPUS_SET_SIGNAL(OPUS_SIGNAL_MUSIC)));
+		// OPUS_SET_INBAND_FEC(1), OPUS_SET_PACKET_LOSS_PERC(10): see rtpa.c
+	}
+
+	US_JLOG_INFO("acap", "Capture configured on %uHz; capturing ...", acap->pcm_hz);
+	acap->tids_created = true;
+	US_THREAD_CREATE(acap->enc_tid, _encoder_thread, acap);
+	US_THREAD_CREATE(acap->pcm_tid, _pcm_thread, acap);
+
+	return acap;
+
+	error:
+		us_acap_destroy(acap);
+		return NULL;
+}
+
+void us_acap_destroy(us_acap_s *acap) {
+	if (acap->tids_created) {
+		atomic_store(&acap->stop, true);
+		US_THREAD_JOIN(acap->pcm_tid);
+		US_THREAD_JOIN(acap->enc_tid);
+	}
+	US_DELETE(acap->enc, opus_encoder_destroy);
+	US_DELETE(acap->res, speex_resampler_destroy);
+	US_DELETE(acap->dev, snd_pcm_close);
+	US_DELETE(acap->dev_params, snd_pcm_hw_params_free);
+	US_RING_DELETE_WITH_ITEMS(acap->enc_ring, us_au_encoded_destroy);
+	US_RING_DELETE_WITH_ITEMS(acap->pcm_ring, us_au_pcm_destroy);
+	if (acap->tids_created) {
+		US_JLOG_INFO("acap", "Capture closed");
+	}
+	free(acap);
+}
+
+int us_acap_get_encoded(us_acap_s *acap, u8 *data, uz *size, u64 *pts) {
+	if (atomic_load(&acap->stop)) {
+		return -1;
+	}
+	const int ri = us_ring_consumer_acquire(acap->enc_ring, 0.1);
+	if (ri < 0) {
+		return US_ERROR_NO_DATA;
+	}
+	const us_au_encoded_s *const buf = acap->enc_ring->items[ri];
+	if (buf->used == 0 || *size < buf->used) {
+		us_ring_consumer_release(acap->enc_ring, ri);
+		return US_ERROR_NO_DATA;
+	}
+	memcpy(data, buf->data, buf->used);
+	*size = buf->used;
+	*pts = buf->pts;
+	us_ring_consumer_release(acap->enc_ring, ri);
+	return 0;
+}
+
+static void *_pcm_thread(void *v_acap) {
+	US_THREAD_SETTLE("us_ac_pcm");
+
+	us_acap_s *const acap = v_acap;
+	u8 in[US_AU_MAX_BUF8];
+
+	while (!atomic_load(&acap->stop)) {
+		const int frames = snd_pcm_readi(acap->dev, in, acap->pcm_frames);
+		if (frames < 0) {
+			US_JLOG_PERROR_ALSA(frames, "acap", "Fatal: Can't capture PCM frames");
+			break;
+		} else if (frames < (int)acap->pcm_frames) {
+			US_JLOG_ERROR("acap", "Fatal: Too few PCM frames captured");
+			break;
+		}
+
+		const int ri = us_ring_producer_acquire(acap->pcm_ring, 0);
+		if (ri >= 0) {
+			us_au_pcm_s *const out = acap->pcm_ring->items[ri];
+			memcpy(out->data, in, acap->pcm_size);
+			us_ring_producer_release(acap->pcm_ring, ri);
+		} else {
+			US_JLOG_ERROR("acap", "PCM ring is full");
+		}
+	}
+
+	atomic_store(&acap->stop, true);
+	return NULL;
+}
+
+static void *_encoder_thread(void *v_acap) {
+	US_THREAD_SETTLE("us_ac_enc");
+
+	us_acap_s *const acap = v_acap;
+	s16 in_res[US_AU_MAX_BUF16];
+
+	while (!atomic_load(&acap->stop)) {
+		const int in_ri = us_ring_consumer_acquire(acap->pcm_ring, 0.1);
+		if (in_ri < 0) {
+			continue;
+		}
+		us_au_pcm_s *const in = acap->pcm_ring->items[in_ri];
+
+		s16 *in_ptr;
+		if (acap->res != NULL) {
+			assert(acap->pcm_hz != US_RTP_OPUS_HZ);
+			u32 in_count = acap->pcm_frames;
+			u32 out_count = US_AU_HZ_TO_FRAMES(US_RTP_OPUS_HZ);
+			speex_resampler_process_interleaved_int(acap->res, in->data, &in_count, in_res, &out_count);
+			in_ptr = in_res;
+		} else {
+			assert(acap->pcm_hz == US_RTP_OPUS_HZ);
+			in_ptr = in->data;
+		}
+
+		const int out_ri = us_ring_producer_acquire(acap->enc_ring, 0);
+		if (out_ri < 0) {
+			US_JLOG_ERROR("acap", "OPUS encoder queue is full");
+			us_ring_consumer_release(acap->pcm_ring, in_ri);
+			continue;
+		}
+		us_au_encoded_s *const out = acap->enc_ring->items[out_ri];
+
+		const int size = opus_encode(acap->enc, in_ptr, US_AU_HZ_TO_FRAMES(US_RTP_OPUS_HZ), out->data, US_ARRAY_LEN(out->data));
+		us_ring_consumer_release(acap->pcm_ring, in_ri);
+
+		if (size > 0) {
+			out->used = size;
+			out->pts = acap->pts;
+			// https://datatracker.ietf.org/doc/html/rfc7587#section-4.2
+			acap->pts += US_AU_HZ_TO_FRAMES(US_RTP_OPUS_HZ);
+		} else {
+			out->used = 0;
+			US_JLOG_PERROR_OPUS(size, "acap", "Fatal: Can't encode PCM frame to OPUS");
+		}
+		us_ring_producer_release(acap->enc_ring, out_ri);
+	}
+
+	atomic_store(&acap->stop, true);
+	return NULL;
+}

janus/src/acap.h

@@ -34,11 +34,11 @@
 
 
 typedef struct {
-	snd_pcm_t			*pcm;
+	snd_pcm_t			*dev;
 	uint				pcm_hz;
 	uint				pcm_frames;
 	uz					pcm_size;
-	snd_pcm_hw_params_t	*pcm_params;
+	snd_pcm_hw_params_t	*dev_params;
 	SpeexResamplerState	*res;
 	OpusEncoder			*enc;
 
@@ -50,12 +50,10 @@ typedef struct {
 	pthread_t		enc_tid;
 	bool			tids_created;
 	atomic_bool		stop;
-} us_audio_s;
+} us_acap_s;
 
 
-bool us_audio_probe(const char *name);
+us_acap_s *us_acap_init(const char *name, uint pcm_hz);
+void us_acap_destroy(us_acap_s *acap);
 
-us_audio_s *us_audio_init(const char *name, uint pcm_hz);
-void us_audio_destroy(us_audio_s *audio);
-
-int us_audio_get_encoded(us_audio_s *audio, u8 *data, uz *size, u64 *pts);
+int us_acap_get_encoded(us_acap_s *acap, u8 *data, uz *size, u64 *pts);

janus/src/au.c

@@ -0,0 +1,151 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2024  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 "au.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <sys/stat.h>
+
+#include "uslibs/tools.h"
+
+
+bool us_au_probe(const char *name) {
+	// This function is very limited. It takes something like:
+	//   hw:0,0 or hw:tc358743,0 or plughw:UAC2Gadget,0
+	// parses card name (0, tc358743, UAC2Gadget) and checks
+	// the existence of it in /proc/asound/.
+	// It's enough for our case.
+
+	if (name == NULL) {
+		return false;
+	}
+
+	if (strchr(name, '/') || strchr(name, '.')) {
+		return false;
+	}
+
+	const char *begin = strchr(name, ':');
+	if (begin == NULL) {
+		return false;
+	}
+	begin += 1;
+	if (*begin == '\0') {
+		return false;
+	}
+
+	const char *end = strchr(begin, ',');
+	if (end == NULL) {
+		return false;
+	}
+	if (end - begin < 1) {
+		return false;
+	}
+
+	char *card = us_strdup(begin);
+	card[end - begin] = '\0';
+
+	bool numeric = true;
+	for (uz index = 0; card[index] != '\0'; ++index) {
+		if (!isdigit(card[index])) {
+			numeric = false;
+			break;
+		}
+	}
+
+	char *path;
+	if (numeric) {
+		US_ASPRINTF(path, "/proc/asound/card%s", card);
+	} else {
+		US_ASPRINTF(path, "/proc/asound/%s", card);
+	}
+
+	bool ok = false;
+	struct stat st;
+	if (lstat(path, &st) == 0) {
+		if (numeric && S_ISDIR(st.st_mode)) {
+			ok = true;
+		} else if (!numeric && S_ISLNK(st.st_mode)) {
+			ok = true;
+		}
+	}
+	free(path);
+	free(card);
+	return ok;
+}
+
+us_au_pcm_s *us_au_pcm_init(void) {
+	us_au_pcm_s *pcm;
+	US_CALLOC(pcm, 1);
+	return pcm;
+}
+
+void us_au_pcm_destroy(us_au_pcm_s *pcm) {
+	free(pcm);
+}
+
+void us_au_pcm_mix(us_au_pcm_s *dest, us_au_pcm_s *src) {
+	const uz size = src->frames * US_RTP_OPUS_CH * 2; // 2 for 16 bit
+
+	if (src->frames == 0) {
+		return;
+
+	} else if (dest->frames == 0) {
+		memcpy(dest->data, src->data, size);
+		dest->frames = src->frames;
+
+	} else if (dest->frames == src->frames) {
+		// https://stackoverflow.com/questions/12089662
+		for (uz index = 0; index < size; ++index) {
+			int a = dest->data[index];
+			int b = src->data[index];
+			int m;
+
+			a += 32768;
+			b += 32768;
+
+			if ((a < 32768) && (b < 32768)) {
+				m = a * b / 32768;
+			} else {
+				m = 2 * (a + b) - (a * b) / 32768 - 65536;
+			}
+			if (m == 65536) {
+				m = 65535;
+			}
+			m -= 32768;
+
+			dest->data[index] = m;
+		}
+	}
+}
+
+us_au_encoded_s *us_au_encoded_init(void) {
+	us_au_encoded_s *enc;
+	US_CALLOC(enc, 1);
+	return enc;
+}
+
+void us_au_encoded_destroy(us_au_encoded_s *enc) {
+	free(enc);
+}

janus/src/au.h

@@ -0,0 +1,61 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2024  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 "uslibs/types.h"
+
+#include "rtp.h"
+
+// A number of frames per 1 channel:
+//   - https://github.com/xiph/opus/blob/7b05f44/src/opus_demo.c#L368
+#define US_AU_FRAME_MS			20
+// #define _HZ_TO_FRAMES(_hz)	(6 * (_hz) / 50) // 120ms
+#define US_AU_HZ_TO_FRAMES(_hz)	((_hz) / 50) // 20ms
+#define US_AU_HZ_TO_BUF16(_hz)	(US_AU_HZ_TO_FRAMES(_hz) * US_RTP_OPUS_CH) // ... * 2: One stereo frame = (16bit L) + (16bit R)
+#define US_AU_HZ_TO_BUF8(_hz)	(US_AU_HZ_TO_BUF16(_hz) * sizeof(s16))
+
+#define US_AU_MIN_PCM_HZ		8000
+#define US_AU_MAX_PCM_HZ		192000
+#define US_AU_MAX_BUF16			US_AU_HZ_TO_BUF16(US_AU_MAX_PCM_HZ)
+#define US_AU_MAX_BUF8			US_AU_HZ_TO_BUF8(US_AU_MAX_PCM_HZ)
+
+
+typedef struct {
+	s16		data[US_AU_MAX_BUF16];
+	uz		frames;
+} us_au_pcm_s;
+
+typedef struct {
+	u8		data[US_RTP_PAYLOAD_SIZE];
+	uz		used;
+	u64		pts;
+} us_au_encoded_s;
+
+bool us_au_probe(const char *name);
+
+us_au_pcm_s *us_au_pcm_init(void);
+void us_au_pcm_destroy(us_au_pcm_s *pcm);
+void us_au_pcm_mix(us_au_pcm_s *a, us_au_pcm_s *b);
+
+us_au_encoded_s *us_au_encoded_init(void);
+void us_au_encoded_destroy(us_au_encoded_s *enc);

janus/src/audio.c

@@ -1,295 +0,0 @@
-/*****************************************************************************
-#                                                                            #
-#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
-#                                                                            #
-#    Copyright (C) 2018-2024  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 "audio.h"
-
-#include <stdlib.h>
-#include <stdatomic.h>
-#include <assert.h>
-
-#include <pthread.h>
-#include <alsa/asoundlib.h>
-#include <speex/speex_resampler.h>
-#include <opus/opus.h>
-
-#include "uslibs/types.h"
-#include "uslibs/errors.h"
-#include "uslibs/tools.h"
-#include "uslibs/array.h"
-#include "uslibs/ring.h"
-#include "uslibs/threading.h"
-
-#include "logging.h"
-
-
-#define _JLOG_PERROR_ALSA(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, snd_strerror(_err))
-#define _JLOG_PERROR_RES(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, speex_resampler_strerror(_err))
-#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_FRAMES(_hz)	((_hz) / 50) // 20ms
-#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(s16))
-
-#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 {
-	s16		data[_MAX_BUF16];
-} _pcm_buffer_s;
-
-typedef struct {
-	u8		data[_MAX_BUF8]; // Worst case
-	uz		used;
-	u64	pts;
-} _enc_buffer_s;
-
-
-static _pcm_buffer_s *_pcm_buffer_init(void);
-static _enc_buffer_s *_enc_buffer_init(void);
-
-static void *_pcm_thread(void *v_audio);
-static void *_encoder_thread(void *v_audio);
-
-
-bool us_audio_probe(const char *name) {
-	snd_pcm_t *pcm;
-	int err;
-	US_JLOG_INFO("audio", "Probing PCM capture ...");
-	if ((err = snd_pcm_open(&pcm, name, SND_PCM_STREAM_CAPTURE, 0)) < 0) {
-		_JLOG_PERROR_ALSA(err, "audio", "Can't probe PCM capture");
-		return false;
-	}
-	snd_pcm_close(pcm);
-	US_JLOG_INFO("audio", "PCM capture is available");
-	return true;
-}
-
-us_audio_s *us_audio_init(const char *name, uint pcm_hz) {
-	us_audio_s *audio;
-	US_CALLOC(audio, 1);
-	audio->pcm_hz = pcm_hz;
-	US_RING_INIT_WITH_ITEMS(audio->pcm_ring, 8, _pcm_buffer_init);
-	US_RING_INIT_WITH_ITEMS(audio->enc_ring, 8, _enc_buffer_init);
-	atomic_init(&audio->stop, false);
-
-	int err;
-
-	{
-		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");
-			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); \
-					goto error; \
-				} \
-			}
-
-		SET_PARAM("Can't initialize PCM params",	snd_pcm_hw_params_any);
-		SET_PARAM("Can't set PCM access type",		snd_pcm_hw_params_set_access, SND_PCM_ACCESS_RW_INTERLEAVED);
-		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) {
-			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);
-		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 (err < 0) {
-			audio->res = NULL;
-			_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);
-		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)));
-		assert(!opus_encoder_ctl(audio->enc, OPUS_SET_SIGNAL(OPUS_SIGNAL_MUSIC)));
-		// OPUS_SET_INBAND_FEC(1), OPUS_SET_PACKET_LOSS_PERC(10): see rtpa.c
-	}
-
-	US_JLOG_INFO("audio", "Pipeline configured on %uHz; capturing ...", audio->pcm_hz);
-	audio->tids_created = true;
-	US_THREAD_CREATE(audio->enc_tid, _encoder_thread, audio);
-	US_THREAD_CREATE(audio->pcm_tid, _pcm_thread, audio);
-
-	return audio;
-
-	error:
-		us_audio_destroy(audio);
-		return NULL;
-}
-
-void us_audio_destroy(us_audio_s *audio) {
-	if (audio->tids_created) {
-		atomic_store(&audio->stop, true);
-		US_THREAD_JOIN(audio->pcm_tid);
-		US_THREAD_JOIN(audio->enc_tid);
-	}
-	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_RING_DELETE_WITH_ITEMS(audio->enc_ring, free);
-	US_RING_DELETE_WITH_ITEMS(audio->pcm_ring, free);
-	if (audio->tids_created) {
-		US_JLOG_INFO("audio", "Pipeline closed");
-	}
-	free(audio);
-}
-
-int us_audio_get_encoded(us_audio_s *audio, u8 *data, uz *size, u64 *pts) {
-	if (atomic_load(&audio->stop)) {
-		return -1;
-	}
-	const int ri = us_ring_consumer_acquire(audio->enc_ring, 0.1);
-	if (ri < 0) {
-		return US_ERROR_NO_DATA;
-	}
-	const _enc_buffer_s *const buf = audio->enc_ring->items[ri];
-	if (*size < buf->used) {
-		us_ring_consumer_release(audio->enc_ring, ri);
-		return US_ERROR_NO_DATA;
-	}
-	memcpy(data, buf->data, buf->used);
-	*size = buf->used;
-	*pts = buf->pts;
-	us_ring_consumer_release(audio->enc_ring, ri);
-	return 0;
-}
-
-static _pcm_buffer_s *_pcm_buffer_init(void) {
-	_pcm_buffer_s *buf;
-	US_CALLOC(buf, 1);
-	return buf;
-}
-
-static _enc_buffer_s *_enc_buffer_init(void) {
-	_enc_buffer_s *buf;
-	US_CALLOC(buf, 1);
-	return buf;
-}
-
-static void *_pcm_thread(void *v_audio) {
-	US_THREAD_SETTLE("us_a_pcm");
-
-	us_audio_s *const audio = v_audio;
-	u8 in[_MAX_BUF8];
-
-	while (!atomic_load(&audio->stop)) {
-		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");
-			break;
-		} else if (frames < (int)audio->pcm_frames) {
-			US_JLOG_ERROR("audio", "Fatal: Too few PCM frames captured");
-			break;
-		}
-
-		const int ri = us_ring_producer_acquire(audio->pcm_ring, 0);
-		if (ri >= 0) {
-			_pcm_buffer_s *const out = audio->pcm_ring->items[ri];
-			memcpy(out->data, in, audio->pcm_size);
-			us_ring_producer_release(audio->pcm_ring, ri);
-		} else {
-			US_JLOG_ERROR("audio", "PCM ring is full");
-		}
-	}
-
-	atomic_store(&audio->stop, true);
-	return NULL;
-}
-
-static void *_encoder_thread(void *v_audio) {
-	US_THREAD_SETTLE("us_a_enc");
-
-	us_audio_s *const audio = v_audio;
-	s16 in_res[_MAX_BUF16];
-
-	while (!atomic_load(&audio->stop)) {
-		const int in_ri = us_ring_consumer_acquire(audio->pcm_ring, 0.1);
-		if (in_ri < 0) {
-			continue;
-		}
-		_pcm_buffer_s *const in = audio->pcm_ring->items[in_ri];
-
-		s16 *in_ptr;
-		if (audio->res != NULL) {
-			assert(audio->pcm_hz != _ENCODER_INPUT_HZ);
-			u32 in_count = audio->pcm_frames;
-			u32 out_count = _HZ_TO_FRAMES(_ENCODER_INPUT_HZ);
-			speex_resampler_process_interleaved_int(audio->res, in->data, &in_count, in_res, &out_count);
-			in_ptr = in_res;
-		} else {
-			assert(audio->pcm_hz == _ENCODER_INPUT_HZ);
-			in_ptr = in->data;
-		}
-
-		const int out_ri = us_ring_producer_acquire(audio->enc_ring, 0);
-		if (out_ri < 0) {
-			US_JLOG_ERROR("audio", "OPUS encoder queue is full");
-			us_ring_consumer_release(audio->pcm_ring, in_ri);
-			continue;
-		}
-		_enc_buffer_s *const out = audio->enc_ring->items[out_ri];
-
-		const int size = opus_encode(audio->enc, in_ptr, _HZ_TO_FRAMES(_ENCODER_INPUT_HZ), out->data, US_ARRAY_LEN(out->data));
-		us_ring_consumer_release(audio->pcm_ring, in_ri);
-
-		if (size >= 0) {
-			out->used = size;
-			out->pts = audio->pts;
-			// https://datatracker.ietf.org/doc/html/rfc7587#section-4.2
-			audio->pts += _HZ_TO_FRAMES(_ENCODER_INPUT_HZ);
-		} else {
-			_JLOG_PERROR_OPUS(size, "audio", "Fatal: Can't encode PCM frame to OPUS");
-		}
-		us_ring_producer_release(audio->enc_ring, out_ri);
-	}
-
-	atomic_store(&audio->stop, true);
-	return NULL;
-}

janus/src/client.c

@@ -25,23 +25,29 @@
 #include <stdlib.h>
 #include <stdatomic.h>
 #include <string.h>
+#include <assert.h>
 
 #include <pthread.h>
 #include <janus/plugins/plugin.h>
+#include <janus/rtp.h>
+#include <opus/opus.h>
 
 #include "uslibs/types.h"
 #include "uslibs/tools.h"
 #include "uslibs/threading.h"
+#include "uslibs/array.h"
 #include "uslibs/list.h"
 #include "uslibs/ring.h"
 
 #include "logging.h"
+#include "au.h"
 #include "rtp.h"
 
 
 static void *_video_thread(void *v_client);
-static void *_audio_thread(void *v_client);
-static void *_common_thread(void *v_client, bool video);
+static void *_acap_thread(void *v_client);
+static void *_video_or_acap_thread(void *v_client, bool video);
+static void *_aplay_thread(void *v_client);
 
 
 us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_session *session) {
@@ -50,7 +56,8 @@ us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_sessio
 	client->gw = gw;
 	client->session = session;
 	atomic_init(&client->transmit, false);
-	atomic_init(&client->transmit_audio, false);
+	atomic_init(&client->transmit_acap, false);
+	atomic_init(&client->transmit_aplay, false);
 	atomic_init(&client->video_orient, 0);
 
 	atomic_init(&client->stop, false);
@@ -58,8 +65,12 @@ us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_sessio
 	US_RING_INIT_WITH_ITEMS(client->video_ring, 2048, us_rtp_init);
 	US_THREAD_CREATE(client->video_tid, _video_thread, client);
 
-	US_RING_INIT_WITH_ITEMS(client->audio_ring, 64, us_rtp_init);
-	US_THREAD_CREATE(client->audio_tid, _audio_thread, client);
+	US_RING_INIT_WITH_ITEMS(client->acap_ring, 64, us_rtp_init);
+	US_THREAD_CREATE(client->acap_tid, _acap_thread, client);
+
+	US_RING_INIT_WITH_ITEMS(client->aplay_enc_ring, 64, us_au_encoded_init);
+	US_RING_INIT_WITH_ITEMS(client->aplay_pcm_ring, 64, us_au_pcm_init);
+	US_THREAD_CREATE(client->aplay_tid, _aplay_thread, client);
 
 	return client;
 }
@@ -70,8 +81,12 @@ void us_janus_client_destroy(us_janus_client_s *client) {
 	US_THREAD_JOIN(client->video_tid);
 	US_RING_DELETE_WITH_ITEMS(client->video_ring, us_rtp_destroy);
 
-	US_THREAD_JOIN(client->audio_tid);
-	US_RING_DELETE_WITH_ITEMS(client->audio_ring, us_rtp_destroy);
+	US_THREAD_JOIN(client->acap_tid);
+	US_RING_DELETE_WITH_ITEMS(client->acap_ring, us_rtp_destroy);
+
+	US_THREAD_JOIN(client->aplay_tid);
+	US_RING_DELETE_WITH_ITEMS(client->aplay_enc_ring, us_au_encoded_destroy);
+	US_RING_DELETE_WITH_ITEMS(client->aplay_pcm_ring, us_au_pcm_destroy);
 
 	free(client);
 }
@@ -79,13 +94,13 @@ 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) {
 	if (
 		atomic_load(&client->transmit)
-		&& (rtp->video || atomic_load(&client->transmit_audio))
+		&& (rtp->video || atomic_load(&client->transmit_acap))
 	) {
-		us_ring_s *const ring = (rtp->video ? client->video_ring : client->audio_ring);
+		us_ring_s *const ring = (rtp->video ? client->video_ring : client->acap_ring);
 		const int ri = us_ring_producer_acquire(ring, 0);
 		if (ri < 0) {
 			US_JLOG_ERROR("client", "Session %p %s ring is full",
-				client->session, (rtp->video ? "video" : "audio"));
+				client->session, (rtp->video ? "video" : "acap"));
 			return;
 		}
 		memcpy(ring->items[ri], rtp, sizeof(us_rtp_s));
@@ -93,20 +108,65 @@ void us_janus_client_send(us_janus_client_s *client, const us_rtp_s *rtp) {
 	}
 }
 
+void us_janus_client_recv(us_janus_client_s *client, janus_plugin_rtp *packet) {
+	if (
+		packet->video
+		|| packet->length < sizeof(janus_rtp_header)
+		|| !atomic_load(&client->transmit)
+		|| !atomic_load(&client->transmit_aplay)
+	) {
+		return;
+	}
+
+	const janus_rtp_header *const header = (janus_rtp_header*)packet->buffer;
+	if (header->type != US_RTP_OPUS_PAYLOAD) {
+		return;
+	}
+
+	const u16 seq = ntohs(header->seq_number);
+	if (
+		seq >= client->aplay_seq_next // In order or missing
+		|| (client->aplay_seq_next - seq) > 50 // In late sequence or sequence wrapped
+	) {
+		client->aplay_seq_next = seq + 1;
+
+		int size = 0;
+		const char *const data = janus_rtp_payload(packet->buffer, packet->length, &size);
+		if (data == NULL || size <= 0) {
+			return;
+		}
+
+		us_ring_s *const ring = client->aplay_enc_ring;
+		const int ri = us_ring_producer_acquire(ring, 0);
+		if (ri < 0) {
+			// US_JLOG_ERROR("client", "Session %p aplay ring is full", client->session);
+			return;
+		}
+		us_au_encoded_s *enc = ring->items[ri];
+		if ((uz)size < US_ARRAY_LEN(enc->data)) {
+			memcpy(enc->data, data, size);
+			enc->used = size;
+		} else {
+			enc->used = 0;
+		}
+		us_ring_producer_release(ring, ri);
+	}
+}
+
 static void *_video_thread(void *v_client) {
-	US_THREAD_SETTLE("us_c_video");
-	return _common_thread(v_client, true);
+	US_THREAD_SETTLE("us_cx_vid");
+	return _video_or_acap_thread(v_client, true);
 }
 
-static void *_audio_thread(void *v_client) {
-	US_THREAD_SETTLE("us_c_audio");
-	return _common_thread(v_client, false);
+static void *_acap_thread(void *v_client) {
+	US_THREAD_SETTLE("us_cx_ac");
+	return _video_or_acap_thread(v_client, false);
 }
 
-static void *_common_thread(void *v_client, bool video) {
+static void *_video_or_acap_thread(void *v_client, bool video) {
 	us_janus_client_s *const client = v_client;
-	us_ring_s *const ring = (video ? client->video_ring : client->audio_ring);
-	assert(ring != NULL); // Audio may be NULL
+	us_ring_s *const ring = (video ? client->video_ring : client->acap_ring);
+	assert(ring != NULL);
 
 	while (!atomic_load(&client->stop)) {
 		const int ri = us_ring_consumer_acquire(ring, 0.1);
@@ -119,7 +179,7 @@ static void *_common_thread(void *v_client, bool video) {
 
 		if (
 			atomic_load(&client->transmit)
-			&& (video || atomic_load(&client->transmit_audio))
+			&& (video || atomic_load(&client->transmit_acap))
 		) {
 			janus_plugin_rtp packet = {
 				.video = rtp.video,
@@ -133,20 +193,33 @@ static void *_common_thread(void *v_client, bool video) {
 			};
 			janus_plugin_rtp_extensions_reset(&packet.extensions);
 
-			/*if (rtp->zero_playout_delay) {
-				// https://github.com/pikvm/pikvm/issues/784
-				packet.extensions.min_delay = 0;
-				packet.extensions.max_delay = 0;
-			} else {
-				packet.extensions.min_delay = 0;
-				// 10s - Chromium/WebRTC default
-				// 3s - Firefox default
-				packet.extensions.max_delay = 300; // == 3s, i.e. 10ms granularity
-			}*/
+			if (rtp.first_of_frame) {
+				if (rtp.zero_playout_delay) {
+					// https://github.com/pikvm/pikvm/issues/784
+					packet.extensions.min_delay = 0;
+					packet.extensions.max_delay = 0;
+				} else {
+					// Эти дефолты используются в Chrome/Safari/Firefox.
+					// Работает всё одинаково, потому что у них общая кодовая база WebRTC.
+					packet.extensions.min_delay = 0;
+					packet.extensions.max_delay = 1000; // == 10s, i.e. 10ms granularity
+				}
+			}
 
-			if (rtp.video) {
-				const uint video_orient = atomic_load(&client->video_orient);
+			if (rtp.video && rtp.first_of_frame) {
+				packet.extensions.abs_capture_ts = rtp.grab_ntp_ts;
+			}
+
+			if (rtp.video && rtp.last_of_frame) {
+				uint video_orient = atomic_load(&client->video_orient);
 				if (video_orient != 0) {
+					// The extension rotates the video clockwise, but want it counterclockwise.
+					// It's more intuitive for people who have seen a protractor at least once in their life.
+					if (video_orient == 90) {
+						video_orient = 270;
+					} else if (video_orient == 270) {
+						video_orient = 90;
+					}
 					packet.extensions.video_rotation = video_orient;
 				}
 			}
@@ -156,3 +229,48 @@ static void *_common_thread(void *v_client, bool video) {
 	}
 	return NULL;
 }
+
+static void *_aplay_thread(void *v_client) {
+	US_THREAD_SETTLE("us_cx_ap");
+
+	us_janus_client_s *const client = v_client;
+
+	int err;
+	OpusDecoder *dec = opus_decoder_create(US_RTP_OPUS_HZ, US_RTP_OPUS_CH, &err);
+	assert(err == 0);
+
+	while (!atomic_load(&client->stop)) {
+		const int in_ri = us_ring_consumer_acquire(client->aplay_enc_ring, 0.1);
+		if (in_ri < 0) {
+			continue;
+		}
+		us_au_encoded_s *in = client->aplay_enc_ring->items[in_ri];
+
+		if (in->used == 0) {
+			us_ring_consumer_release(client->aplay_enc_ring, in_ri);
+			continue;
+		}
+
+		const int out_ri = us_ring_producer_acquire(client->aplay_pcm_ring, 0);
+		if (out_ri < 0) {
+			US_JLOG_ERROR("aplay", "OPUS decoder queue is full");
+			us_ring_consumer_release(client->aplay_enc_ring, in_ri);
+			continue;
+		}
+		us_au_pcm_s *out = client->aplay_pcm_ring->items[out_ri];
+
+		const int frames = opus_decode(dec, in->data, in->used, out->data, US_AU_HZ_TO_FRAMES(US_RTP_OPUS_HZ), 0);
+		us_ring_consumer_release(client->aplay_enc_ring, in_ri);
+
+		if (frames > 0) {
+			out->frames = frames;
+		} else {
+			out->frames = 0;
+			US_JLOG_PERROR_OPUS(frames, "aplay", "Fatal: Can't decode OPUS to PCM frame");
+		}
+		us_ring_producer_release(client->aplay_pcm_ring, out_ri);
+	}
+
+	opus_decoder_destroy(dec);
+	return NULL;
+}

janus/src/client.h

@@ -38,15 +38,21 @@ typedef struct {
 	janus_callbacks			*gw;
 	janus_plugin_session	*session;
 	atomic_bool				transmit;
-	atomic_bool				transmit_audio;
+	atomic_bool				transmit_acap;
+	atomic_bool				transmit_aplay;
 	atomic_uint				video_orient;
 
 	pthread_t				video_tid;
-	pthread_t				audio_tid;
+	pthread_t				acap_tid;
+	pthread_t				aplay_tid;
 	atomic_bool				stop;
 
 	us_ring_s				*video_ring;
-	us_ring_s				*audio_ring;
+	us_ring_s				*acap_ring;
+
+	us_ring_s				*aplay_enc_ring;
+	u16						aplay_seq_next;
+	us_ring_s				*aplay_pcm_ring;
 
     US_LIST_DECLARE;
 } us_janus_client_s;
@@ -56,3 +62,4 @@ us_janus_client_s *us_janus_client_init(janus_callbacks *gw, janus_plugin_sessio
 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);
+void us_janus_client_recv(us_janus_client_s *client, janus_plugin_rtp *packet);

janus/src/config.c

@@ -28,6 +28,7 @@
 #include <janus/config.h>
 #include <janus/plugins/plugin.h>
 
+#include "uslibs/types.h"
 #include "uslibs/tools.h"
 
 #include "const.h"
@@ -35,6 +36,7 @@
 
 
 static char *_get_value(janus_config *jcfg, const char *section, const char *option);
+static uint _get_uint(janus_config *jcfg, const char *section, const char *option, uint def);
 // static bool _get_bool(janus_config *jcfg, const char *section, const char *option, bool def);
 
 
@@ -55,18 +57,18 @@ us_config_s *us_config_init(const char *config_dir_path) {
 	}
 	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)");
+	if ((config->video_sink_name = _get_value(jcfg, "video", "sink")) == NULL) {
+		US_JLOG_ERROR("config", "Missing config value: video.sink");
 		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");
+	if ((config->acap_dev_name = _get_value(jcfg, "acap", "device")) != NULL) {
+		config->acap_hz = _get_uint(jcfg, "acap", "sampling_rate", 0);
+		config->tc358743_dev_path = _get_value(jcfg, "acap", "tc358743");
+		if (config->acap_hz == 0 && config->tc358743_dev_path == NULL) {
+			US_JLOG_ERROR("config", "Either acap.sampling_rate or acap.tc358743 required");
 			goto error;
 		}
+		config->aplay_dev_name = _get_value(jcfg, "aplay", "device");
 	}
 
 	goto ok;
@@ -82,8 +84,9 @@ ok:
 
 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->acap_dev_name, free);
 	US_DELETE(config->tc358743_dev_path, free);
+	US_DELETE(config->aplay_dev_name, free);
 	free(config);
 }
 
@@ -96,6 +99,20 @@ static char *_get_value(janus_config *jcfg, const char *section, const char *opt
 	return us_strdup(option_obj->value);
 }
 
+static uint _get_uint(janus_config *jcfg, const char *section, const char *option, uint def) {
+	char *const tmp = _get_value(jcfg, section, option);
+	uint value = def;
+	if (tmp != NULL) {
+		errno = 0;
+		value = (uint)strtoul(tmp, NULL, 10);
+		if (errno != 0) {
+			value = def;
+		}
+		free(tmp);
+	}
+	return 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;

janus/src/config.h

@@ -23,11 +23,17 @@
 #pragma once
 
 
+#include "uslibs/types.h"
+
+
 typedef struct {
 	char	*video_sink_name;
 
-	char	*audio_dev_name;
+	char	*acap_dev_name;
+	uint	acap_hz;
 	char	*tc358743_dev_path;
+
+	char	*aplay_dev_name;
 } us_config_s;
 
 

janus/src/logging.h

@@ -36,3 +36,8 @@
 		JANUS_LOG(LOG_ERR, "[%s/%-9s] " x_msg ": %s\n", US_PLUGIN_NAME, x_prefix, ##__VA_ARGS__, m_perror_str); \
 		free(m_perror_str); \
 	}
+
+// We don't include alsa, speex and opus headers here
+#define US_JLOG_PERROR_ALSA(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, snd_strerror(_err))
+#define US_JLOG_PERROR_RES(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, speex_resampler_strerror(_err))
+#define US_JLOG_PERROR_OPUS(_err, _prefix, _msg, ...)	US_JLOG_ERROR(_prefix, _msg ": %s", ##__VA_ARGS__, opus_strerror(_err))

janus/src/plugin.c

@@ -25,6 +25,7 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <errno.h>
 #include <assert.h>
 
 #include <sys/mman.h>
@@ -33,7 +34,9 @@
 #include <pthread.h>
 #include <jansson.h>
 #include <janus/plugins/plugin.h>
+#include <janus/rtp.h>
 #include <janus/rtcp.h>
+#include <alsa/asoundlib.h>
 
 #include "uslibs/types.h"
 #include "uslibs/const.h"
@@ -48,7 +51,8 @@
 #include "const.h"
 #include "logging.h"
 #include "client.h"
-#include "audio.h"
+#include "au.h"
+#include "acap.h"
 #include "rtp.h"
 #include "rtpv.h"
 #include "rtpa.h"
@@ -56,6 +60,8 @@
 #include "config.h"
 
 
+static const char *const	default_ice_url = "stun:stun.l.google.com:19302";
+
 static us_config_s		*_g_config = NULL;
 static const useconds_t	_g_watchers_polling = 100000;
 
@@ -69,31 +75,41 @@ 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_t		_g_acap_tid;
+static atomic_bool		_g_acap_tid_created = false;
+static pthread_t		_g_aplay_tid;
+static atomic_bool		_g_aplay_tid_created = false;
 
 static pthread_mutex_t	_g_video_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_mutex_t	_g_audio_lock = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t	_g_acap_lock = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t	_g_aplay_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_has_speakers = false;
 static atomic_bool		_g_key_required = false;
 
 
 #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_ACAP		US_MUTEX_LOCK(_g_acap_lock)
+#define _UNLOCK_ACAP	US_MUTEX_UNLOCK(_g_acap_lock)
 
-#define _LOCK_ALL		{ _LOCK_VIDEO; _LOCK_AUDIO; }
-#define _UNLOCK_ALL		{ _UNLOCK_AUDIO; _UNLOCK_VIDEO; }
+#define _LOCK_APLAY		US_MUTEX_LOCK(_g_aplay_lock)
+#define _UNLOCK_APLAY	US_MUTEX_UNLOCK(_g_aplay_lock)
+
+#define _LOCK_ALL		{ _LOCK_VIDEO; _LOCK_ACAP; _LOCK_APLAY; }
+#define _UNLOCK_ALL		{ _UNLOCK_APLAY; _UNLOCK_ACAP; _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)
+#define _HAS_SPEAKERS	atomic_load(&_g_has_speakers)
+
+#define _IF_DISABLED(...) { if (!_READY || _STOP) { __VA_ARGS__ } }
 
 
 janus_plugin *create(void);
@@ -101,7 +117,7 @@ janus_plugin *create(void);
 
 static void *_video_rtp_thread(void *arg) {
 	(void)arg;
-	US_THREAD_SETTLE("us_video_rtp");
+	US_THREAD_SETTLE("us_p_rtpv");
 	atomic_store(&_g_video_rtp_tid_created, true);
 
 	while (!_STOP) {
@@ -120,7 +136,7 @@ static void *_video_rtp_thread(void *arg) {
 
 static void *_video_sink_thread(void *arg) {
 	(void)arg;
-	US_THREAD_SETTLE("us_video_sink");
+	US_THREAD_SETTLE("us_p_vsink");
 	atomic_store(&_g_video_sink_tid_created, true);
 
 	us_frame_s *drop = us_frame_init();
@@ -198,15 +214,23 @@ static void *_video_sink_thread(void *arg) {
 	return NULL;
 }
 
-static int _check_tc358743_audio(uint *audio_hz) {
-	int fd;
-	if ((fd = open(_g_config->tc358743_dev_path, O_RDWR)) < 0) {
-		US_JLOG_PERROR("audio", "Can't open TC358743 V4L2 device");
+static int _get_acap_hz(uint *hz) {
+	if (_g_config->acap_hz != 0) {
+		*hz = _g_config->acap_hz;
+		return 0;
+	}
+	if (_g_config->tc358743_dev_path == NULL) {
+		US_JLOG_ERROR("acap", "No configured sampling rate");
 		return -1;
 	}
-	const int checked = us_tc358743_xioctl_get_audio_hz(fd, audio_hz);
+	int fd;
+	if ((fd = open(_g_config->tc358743_dev_path, O_RDWR)) < 0) {
+		US_JLOG_PERROR("acap", "Can't open TC358743 V4L2 device");
+		return -1;
+	}
+	const int checked = us_tc358743_xioctl_get_audio_hz(fd, hz);
 	if (checked < 0) {
-		US_JLOG_PERROR("audio", "Can't check TC358743 audio state (%d)", checked);
+		US_JLOG_PERROR("acap", "Can't check TC358743 audio state (%d)", checked);
 		close(fd);
 		return -1;
 	}
@@ -214,13 +238,13 @@ static int _check_tc358743_audio(uint *audio_hz) {
 	return 0;
 }
 
-static void *_audio_thread(void *arg) {
+static void *_acap_thread(void *arg) {
 	(void)arg;
-	US_THREAD_SETTLE("us_audio");
-	atomic_store(&_g_audio_tid_created, true);
+	US_THREAD_SETTLE("us_p_ac");
+	atomic_store(&_g_acap_tid_created, true);
 
-	assert(_g_config->audio_dev_name != NULL);
-	assert(_g_config->tc358743_dev_path != NULL);
+	assert(_g_config->acap_dev_name != NULL);
+	assert(_g_rtpa != NULL);
 
 	int once = 0;
 
@@ -230,53 +254,175 @@ static void *_audio_thread(void *arg) {
 			continue;
 		}
 
-		uint audio_hz = 0;
-		us_audio_s *audio = NULL;
+		uint hz = 0;
+		us_acap_s *acap = NULL;
 
-		if (_check_tc358743_audio(&audio_hz) < 0) {
-			goto close_audio;
+		if (!us_au_probe(_g_config->acap_dev_name)) {
+			US_ONCE({ US_JLOG_ERROR("acap", "No PCM capture device"); });
+			goto close_acap;
 		}
-		if (audio_hz == 0) {
-			US_ONCE({ US_JLOG_INFO("audio", "No audio presented from the host"); });
-			goto close_audio;
+		if (_get_acap_hz(&hz) < 0) {
+			goto close_acap;
 		}
-		US_ONCE({ US_JLOG_INFO("audio", "Detected host audio"); });
-		if ((audio = us_audio_init(_g_config->audio_dev_name, audio_hz)) == NULL) {
-			goto close_audio;
+		if (hz == 0) {
+			US_ONCE({ US_JLOG_INFO("acap", "No audio presented from the host"); });
+			goto close_acap;
+		}
+		US_ONCE({ US_JLOG_INFO("acap", "Detected host audio"); });
+		if ((acap = us_acap_init(_g_config->acap_dev_name, hz)) == NULL) {
+			goto close_acap;
 		}
 
 		once = 0;
 
 		while (!_STOP && _HAS_WATCHERS && _HAS_LISTENERS) {
-			if (_check_tc358743_audio(&audio_hz) < 0 || audio->pcm_hz != audio_hz) {
-				goto close_audio;
+			if (_get_acap_hz(&hz) < 0 || acap->pcm_hz != hz) {
+				goto close_acap;
 			}
 			uz size = US_RTP_DATAGRAM_SIZE - US_RTP_HEADER_SIZE;
 			u8 data[size];
 			u64 pts;
-			const int result = us_audio_get_encoded(audio, data, &size, &pts);
+			const int result = us_acap_get_encoded(acap, data, &size, &pts);
 			if (result == 0) {
-				_LOCK_AUDIO;
+				_LOCK_ACAP;
 				us_rtpa_wrap(_g_rtpa, data, size, pts);
-				_UNLOCK_AUDIO;
+				_UNLOCK_ACAP;
 			} else if (result == -1) {
-				goto close_audio;
+				goto close_acap;
 			}
 		}
 
-	close_audio:
-		US_DELETE(audio, us_audio_destroy);
+	close_acap:
+		US_DELETE(acap, us_acap_destroy);
 		sleep(1); // error_delay
 	}
 	return NULL;
 }
 
+static void *_aplay_thread(void *arg) {
+	(void)arg;
+	US_THREAD_SETTLE("us_p_ap");
+	atomic_store(&_g_aplay_tid_created, true);
+
+	assert(_g_config->aplay_dev_name != NULL);
+
+	int once = 0;
+
+	while (!_STOP) {
+		snd_pcm_t *dev = NULL;
+		bool skip = true;
+
+		while (!_STOP) {
+			usleep((US_AU_FRAME_MS / 4) * 1000);
+
+			us_au_pcm_s mixed = {0};
+			_LOCK_APLAY;
+			US_LIST_ITERATE(_g_clients, client, {
+				us_au_pcm_s last = {0};
+				do {
+					const int ri = us_ring_consumer_acquire(client->aplay_pcm_ring, 0);
+					if (ri >= 0) {
+						const us_au_pcm_s *pcm = client->aplay_pcm_ring->items[ri];
+						memcpy(&last, pcm, sizeof(us_au_pcm_s));
+						us_ring_consumer_release(client->aplay_pcm_ring, ri);
+					} else {
+						break;
+					}
+				} while (skip && !_STOP);
+				us_au_pcm_mix(&mixed, &last);
+				// US_JLOG_INFO("++++++", "mixed %p", client);
+			});
+			_UNLOCK_APLAY;
+			// US_JLOG_INFO("++++++", "--------------");
+
+			if (skip) {
+				static uint skipped = 0;
+				if (skipped < (1000 / (US_AU_FRAME_MS / 4))) {
+					++skipped;
+					continue;
+				} else {
+					skipped = 0;
+				}
+			}
+
+			if (!_HAS_WATCHERS || !_HAS_LISTENERS || !_HAS_SPEAKERS) {
+				goto close_aplay;
+			}
+
+			if (dev == NULL) {
+				if (!us_au_probe(_g_config->aplay_dev_name)) {
+					US_ONCE({ US_JLOG_ERROR("aplay", "No PCM playback device"); });
+					goto close_aplay;
+				}
+
+				int err = snd_pcm_open(&dev, _g_config->aplay_dev_name, SND_PCM_STREAM_PLAYBACK, 0);
+				if (err < 0) {
+					US_ONCE({ US_JLOG_PERROR_ALSA(err, "aplay", "Can't open PCM playback"); });
+					goto close_aplay;
+				}
+
+				err = snd_pcm_set_params(dev, SND_PCM_FORMAT_S16_LE, SND_PCM_ACCESS_RW_INTERLEAVED,
+					US_RTP_OPUS_CH, US_RTP_OPUS_HZ, 1 /* soft resample */, 50000 /* 50000 = 0.05sec */
+				);
+				if (err < 0) {
+					US_ONCE({ US_JLOG_PERROR_ALSA(err, "aplay", "Can't configure PCM playback"); });
+					goto close_aplay;
+				}
+
+				US_JLOG_INFO("aplay", "Playback opened, playing ...");
+				once = 0;
+			}
+
+			if (dev != NULL && mixed.frames > 0) {
+				snd_pcm_sframes_t frames = snd_pcm_writei(dev, mixed.data, mixed.frames);
+				if (frames < 0) {
+					frames = snd_pcm_recover(dev, frames, 1);
+				} else {
+					if (once != 0) {
+						US_JLOG_INFO("aplay", "Playing resumed (snd_pcm_writei) ...");
+					}
+					once = 0;
+					skip = false;
+				}
+				if (frames < 0) {
+					US_ONCE({ US_JLOG_PERROR_ALSA(frames, "aplay", "Can't play to PCM playback"); });
+					if (frames == -ENODEV) {
+						goto close_aplay;
+					}
+					skip = true;
+				} else {
+					if (once != 0) {
+						US_JLOG_INFO("aplay", "Playing resumed (snd_pcm_recover) ...");
+					}
+					once = 0;
+					skip = false;
+				}
+			}
+		}
+
+	close_aplay:
+		if (dev != NULL) {
+			US_DELETE(dev, snd_pcm_close);
+			US_JLOG_INFO("aplay", "Playback closed");
+		}
+	}
+	return NULL;
+}
+
 static void _relay_rtp_clients(const us_rtp_s *rtp) {
 	US_LIST_ITERATE(_g_clients, client, {
 		us_janus_client_send(client, rtp);
 	});
 }
 
+static void _alsa_quiet(const char *file, int line, const char *func, int err, const char *fmt, ...) {
+	(void)file;
+	(void)line;
+	(void)func;
+	(void)err;
+	(void)fmt;
+}
+
 static int _plugin_init(janus_callbacks *gw, const char *config_dir_path) {
 	// https://groups.google.com/g/meetecho-janus/c/xoWIQfaoJm8
 	// sysctl -w net.core.rmem_default=500000 
@@ -290,11 +436,16 @@ static int _plugin_init(janus_callbacks *gw, const char *config_dir_path) {
 	}
 	_g_gw = gw;
 
+	snd_lib_error_set_handler(_alsa_quiet);
+
 	US_RING_INIT_WITH_ITEMS(_g_video_ring, 64, us_frame_init);
 	_g_rtpv = us_rtpv_init(_relay_rtp_clients);
-	if (_g_config->audio_dev_name != NULL && us_audio_probe(_g_config->audio_dev_name)) {
+	if (_g_config->acap_dev_name != NULL) {
 		_g_rtpa = us_rtpa_init(_relay_rtp_clients);
-		US_THREAD_CREATE(_g_audio_tid, _audio_thread, NULL);
+		US_THREAD_CREATE(_g_acap_tid, _acap_thread, NULL);
+		if (_g_config->aplay_dev_name != NULL) {
+			US_THREAD_CREATE(_g_aplay_tid, _aplay_thread, NULL);
+		}
 	}
 	US_THREAD_CREATE(_g_video_rtp_tid, _video_rtp_thread, NULL);
 	US_THREAD_CREATE(_g_video_sink_tid, _video_sink_thread, NULL);
@@ -310,7 +461,8 @@ static void _plugin_destroy(void) {
 #	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);
+	JOIN(_g_acap_tid);
+	JOIN(_g_aplay_tid);
 #	undef JOIN
 
 	US_LIST_ITERATE(_g_clients, client, {
@@ -325,8 +477,6 @@ static void _plugin_destroy(void) {
 	US_DELETE(_g_config, us_config_destroy);
 }
 
-#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_ALL;
@@ -343,6 +493,7 @@ static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
 	bool found = false;
 	bool has_watchers = false;
 	bool has_listeners = false;
+	bool has_speakers = false;
 	US_LIST_ITERATE(_g_clients, client, {
 		if (client->session == session) {
 			US_JLOG_INFO("main", "Removing session %p ...", session);
@@ -351,7 +502,8 @@ static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
 			found = true;
 		} else {
 			has_watchers = (has_watchers || atomic_load(&client->transmit));
-			has_listeners = (has_listeners || atomic_load(&client->transmit_audio));
+			has_listeners = (has_listeners || atomic_load(&client->transmit_acap));
+			has_speakers = (has_speakers || atomic_load(&client->transmit_aplay));
 		}
 	});
 	if (!found) {
@@ -360,6 +512,7 @@ static void _plugin_destroy_session(janus_plugin_session* session, int *err) {
 	}
 	atomic_store(&_g_has_watchers, has_watchers);
 	atomic_store(&_g_has_listeners, has_listeners);
+	atomic_store(&_g_has_speakers, has_speakers);
 	_UNLOCK_ALL;
 }
 
@@ -398,8 +551,6 @@ static void _set_transmit(janus_plugin_session *session, const char *msg, bool t
 	_UNLOCK_ALL;
 }
 
-#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); }
 
@@ -458,15 +609,22 @@ static struct janus_plugin_result *_plugin_handle_message(
 		PUSH_STATUS("stopped", NULL, NULL);
 
 	} else if (!strcmp(request_str, "watch")) {
-		bool with_audio = false;
 		uint video_orient = 0;
+		bool with_acap = false;
+		bool with_aplay = false;
 		{
 			json_t *const params = json_object_get(msg, "params");
 			if (params != NULL) {
 				{
 					json_t *const obj = json_object_get(params, "audio");
 					if (obj != NULL && json_is_boolean(obj)) {
-						with_audio = (_g_rtpa != NULL && json_boolean_value(obj));
+						with_acap = (us_au_probe(_g_config->acap_dev_name) && json_boolean_value(obj));
+					}
+				}
+				{
+					json_t *const obj = json_object_get(params, "mic");
+					if (obj != NULL && json_is_boolean(obj)) {
+						with_aplay = (us_au_probe(_g_config->aplay_dev_name) && json_boolean_value(obj));
 					}
 				}
 				{
@@ -485,7 +643,7 @@ static struct janus_plugin_result *_plugin_handle_message(
 		{
 			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(""));
+			char *const audio_sdp = (with_acap ? us_rtpa_make_sdp(_g_rtpa, with_aplay) : us_strdup(""));
 			US_ASPRINTF(sdp,
 				"v=0" RN
 				"o=- %" PRIu64 " 1 IN IP4 0.0.0.0" RN
@@ -514,19 +672,30 @@ static struct janus_plugin_result *_plugin_handle_message(
 		{
 			_LOCK_ALL;
 			bool has_listeners = false;
+			bool has_speakers = false;
 			US_LIST_ITERATE(_g_clients, client, {
 				if (client->session == session) {
-					atomic_store(&client->transmit_audio, with_audio);
+					atomic_store(&client->transmit_acap, with_acap);
+					atomic_store(&client->transmit_aplay, with_aplay);
 					atomic_store(&client->video_orient, video_orient);
 				}
-				has_listeners = (has_listeners || atomic_load(&client->transmit_audio));
+				has_listeners = (has_listeners || atomic_load(&client->transmit_acap));
+				has_speakers = (has_speakers || atomic_load(&client->transmit_aplay));
 			});
 			atomic_store(&_g_has_listeners, has_listeners);
+			atomic_store(&_g_has_speakers, has_speakers);
 			_UNLOCK_ALL;
 		}
 
 	} else if (!strcmp(request_str, "features")) {
-		json_t *const features = json_pack("{sb}", "audio", (_g_rtpa != NULL));
+		const char *const ice_url = getenv("JANUS_USTREAMER_WEB_ICE_URL");
+		const bool acap_avail = us_au_probe(_g_config->acap_dev_name);
+		json_t *const features = json_pack(
+			"{s:b, s:b, s:{s:s?}}",
+			"audio", acap_avail,
+			"mic", (acap_avail && us_au_probe(_g_config->aplay_dev_name)),
+			"ice", "url", (ice_url != NULL ? ice_url : default_ice_url)
+		);
 		PUSH_STATUS("features", features, NULL);
 		json_decref(features);
 
@@ -551,10 +720,27 @@ done:
 #	undef PUSH_ERROR
 }
 
-static void _plugin_incoming_rtcp(janus_plugin_session *handle, janus_plugin_rtcp *packet) {
-	(void)handle;
-	(void)packet;
-	if (packet->video && janus_rtcp_has_pli(packet->buffer, packet->length)) {
+static void _plugin_incoming_rtp(janus_plugin_session *session, janus_plugin_rtp *packet) {
+	_IF_DISABLED({ return; });
+	if (session == NULL || packet == NULL || packet->video) {
+		return; // Accept only valid audio
+	}
+	_LOCK_APLAY;
+	US_LIST_ITERATE(_g_clients, client, {
+		if (client->session == session) {
+			us_janus_client_recv(client, packet);
+			break;
+		}
+	});
+	_UNLOCK_APLAY;
+}
+
+static void _plugin_incoming_rtcp(janus_plugin_session *session, janus_plugin_rtcp *packet) {
+	_IF_DISABLED({ return; });
+	if (session == NULL || packet == NULL || !packet->video) {
+		return; // Accept only valid video
+	}
+	if (janus_rtcp_has_pli(packet->buffer, packet->length)) {
 		// US_JLOG_INFO("main", "Got video PLI");
 		atomic_store(&_g_key_required, true);
 	}
@@ -595,6 +781,7 @@ janus_plugin *create(void) {
 		.get_author = _plugin_get_author,
 		.get_package = _plugin_get_package,
 
+		.incoming_rtp = _plugin_incoming_rtp,
 		.incoming_rtcp = _plugin_incoming_rtcp,
 	);
 #	pragma GCC diagnostic pop

janus/src/rtp.h

@@ -28,6 +28,13 @@
 // https://stackoverflow.com/questions/47635545/why-webrtc-chose-rtp-max-packet-size-to-1200-bytes
 #define US_RTP_DATAGRAM_SIZE	1200
 #define US_RTP_HEADER_SIZE		12
+#define US_RTP_PAYLOAD_SIZE		(US_RTP_DATAGRAM_SIZE - US_RTP_HEADER_SIZE)
+
+#define US_RTP_H264_PAYLOAD		96
+#define US_RTP_OPUS_PAYLOAD		111
+
+#define US_RTP_OPUS_HZ			48000
+#define US_RTP_OPUS_CH			2
 
 
 typedef struct {
@@ -38,7 +45,11 @@ typedef struct {
 	u16		seq;
 	u8		datagram[US_RTP_DATAGRAM_SIZE];
 	uz		used;
+
+	bool	first_of_frame;
+	bool	last_of_frame;
 	bool	zero_playout_delay;
+	u64		grab_ntp_ts;
 } us_rtp_s;
 
 typedef void (*us_rtp_callback_f)(const us_rtp_s *rtp);

janus/src/rtpa.c

@@ -33,7 +33,7 @@ us_rtpa_s *us_rtpa_init(us_rtp_callback_f callback) {
 	us_rtpa_s *rtpa;
 	US_CALLOC(rtpa, 1);
 	rtpa->rtp = us_rtp_init();
-	us_rtp_assign(rtpa->rtp, 111, false);
+	us_rtp_assign(rtpa->rtp, US_RTP_OPUS_PAYLOAD, false);
 	rtpa->callback = callback;
 	return rtpa;
 }
@@ -43,21 +43,26 @@ void us_rtpa_destroy(us_rtpa_s *rtpa) {
 	free(rtpa);
 }
 
-char *us_rtpa_make_sdp(us_rtpa_s *rtpa) {
+char *us_rtpa_make_sdp(us_rtpa_s *rtpa, bool mic) {
 	const uint pl = rtpa->rtp->payload;
 	char *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
+		"a=rtpmap:%u OPUS/%u/%u" RN
 		"a=fmtp:%u sprop-stereo=1" RN // useinbandfec=1
 		"a=rtcp-fb:%u nack" RN
 		"a=rtcp-fb:%u nack pli" RN
 		"a=rtcp-fb:%u goog-remb" RN
+		"a=mid:a" RN
+		"a=msid:audio a" RN
 		"a=ssrc:%" PRIu32 " cname:ustreamer" RN
-		"a=sendonly" RN,
-		pl, pl, pl, pl, pl, pl,
-		rtpa->rtp->ssrc
+		"a=%s" RN,
+		pl, pl,
+		US_RTP_OPUS_HZ, US_RTP_OPUS_CH,
+		pl, pl, pl, pl,
+		rtpa->rtp->ssrc,
+		(mic ? "sendrecv" : "sendonly")
 	);
 	return sdp;
 }

janus/src/rtpa.h

@@ -36,5 +36,5 @@ typedef struct {
 us_rtpa_s *us_rtpa_init(us_rtp_callback_f callback);
 void us_rtpa_destroy(us_rtpa_s *rtpa);
 
-char *us_rtpa_make_sdp(us_rtpa_s *rtpa);
+char *us_rtpa_make_sdp(us_rtpa_s *rtpa, bool mic);
 void us_rtpa_wrap(us_rtpa_s *rtpa, const u8 *data, uz size, u32 pts);

janus/src/rtpv.c

@@ -45,7 +45,7 @@ us_rtpv_s *us_rtpv_init(us_rtp_callback_f callback) {
 	us_rtpv_s *rtpv;
 	US_CALLOC(rtpv, 1);
 	rtpv->rtp = us_rtp_init();
-	us_rtp_assign(rtpv->rtp, 96, true);
+	us_rtp_assign(rtpv->rtp, US_RTP_H264_PAYLOAD, true);
 	rtpv->callback = callback;
 	return rtpv;
 }
@@ -64,17 +64,18 @@ char *us_rtpv_make_sdp(us_rtpv_s *rtpv) {
 		"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 profile-level-id=42E01F;packetization-mode=1" RN
 		"a=rtcp-fb:%u nack" RN
 		"a=rtcp-fb:%u nack pli" RN
 		"a=rtcp-fb:%u goog-remb" RN
+		"a=mid:v" RN
+		"a=msid:video v" RN
 		"a=ssrc:%" PRIu32 " cname:ustreamer" RN
-		"a=extmap:1 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay" RN
-		"a=extmap:2 urn:3gpp:video-orientation" RN
+		"a=extmap:1/sendonly urn:3gpp:video-orientation" RN
+		"a=extmap:2/sendonly http://www.webrtc.org/experiments/rtp-hdrext/playout-delay" RN
+		"a=extmap:3/sendonly http://www.webrtc.org/experiments/rtp-hdrext/abs-capture-time" RN
 		"a=sendonly" RN,
-		pl, pl, pl, pl,
-		pl, pl, pl,
+		pl, pl, pl, pl, pl, pl,
 		rtpv->rtp->ssrc
 	);
 	return sdp;
@@ -88,7 +89,10 @@ void us_rtpv_wrap(us_rtpv_s *rtpv, const us_frame_s *frame, bool zero_playout_de
 
 	assert(frame->format == V4L2_PIX_FMT_H264);
 
+	rtpv->rtp->first_of_frame = true;
+	rtpv->rtp->last_of_frame = false;
 	rtpv->rtp->zero_playout_delay = zero_playout_delay;
+	rtpv->rtp->grab_ntp_ts = us_get_now_ntp() - us_ld_to_ntp(us_get_now_monotonic() - frame->grab_begin_ts);
 
 	const u32 pts = us_get_now_monotonic_u64() * 9 / 100; // PTS units are in 90 kHz
 	sz last_offset = -_PRE;
@@ -129,7 +133,9 @@ void _rtpv_process_nalu(us_rtpv_s *rtpv, const u8 *data, uz size, u32 pts, bool
 		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->rtp->last_of_frame = true;
 		rtpv->callback(rtpv->rtp);
+		rtpv->rtp->first_of_frame = false;
 		return;
 	}
 
@@ -161,7 +167,9 @@ void _rtpv_process_nalu(us_rtpv_s *rtpv, const u8 *data, uz size, u32 pts, bool
 
 		memcpy(dg + fu_overhead, src, frag_size);
 		rtpv->rtp->used = fu_overhead + frag_size;
+		rtpv->rtp->last_of_frame = last;
 		rtpv->callback(rtpv->rtp);
+		rtpv->rtp->first_of_frame = false;
 
 		src += frag_size;
 		remaining -= frag_size;

linters/mypy.ini

@@ -1,5 +1,5 @@
 [mypy]
-python_version = 3.9
+python_version = 3.14
 ignore_missing_imports = true
 disallow_untyped_defs = true
 strict_optional = true

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

linters/tox.ini

@@ -3,7 +3,7 @@ envlist = cppcheck, flake8, pylint, mypy, vulture, htmlhint
 skipsdist = true
 
 [testenv]
-basepython = python3.12
+basepython = python3.14
 changedir = /src
 
 [testenv:cppcheck]
@@ -15,8 +15,6 @@ commands = cppcheck \
 			--quiet \
 			--check-level=exhaustive \
 			--enable=warning,portability,performance,style \
-			--suppress=assignmentInAssert \
-			--suppress=assertWithSideEffect \
 			--suppress=variableScope \
 			--inline-suppr \
 			--library=python \

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 6.21" "January 2021"
+.TH USTREAMER-DUMP 1 "version 6.48" "January 2021"
 
 .SH NAME
 ustreamer-dump \- Dump uStreamer's memory sink to file

man/ustreamer.1

@@ -1,6 +1,6 @@
 .\" Manpage for ustreamer.
 .\" Open an issue or pull request to https://github.com/pikvm/ustreamer to correct errors or typos
-.TH USTREAMER 1 "version 6.21" "November 2020"
+.TH USTREAMER 1 "version 6.48" "November 2020"
 
 .SH NAME
 ustreamer \- stream MJPEG video from any V4L2 device to the network
@@ -52,7 +52,7 @@ Initial image resolution. Default: 640x480.
 .TP
 .BR \-m\ \fIfmt ", " \-\-format\ \fIfmt
 Image format.
-Available: YUYV, YVYU, UYVY, RGB565, RGB24, JPEG; default: YUYV.
+Available: YUYV, YVYU, UYVY, YUV420, YVU420, RGB565, RGB24, GREY, MJPEG, JPEG; default: YUYV.
 .TP
 .BR \-a\ \fIstd ", " \-\-tv\-standard\ \fIstd
 Force TV standard.
@@ -253,6 +253,9 @@ Interval between keyframes. Default: 30.
 .TP
 .BR \-\-h264\-m2m\-device\ \fI/dev/path
 Path to V4L2 mem-to-mem encoder device. Default: auto-select.
+.TP
+.BR \-\-h264\-boost\-device
+Increase encoder performance on PiKVM V4. Default: disabled.
 
 .SS "RAW sink options"
 .TP
@@ -274,7 +277,10 @@ Timeout for lock. Default: 1.
 .SS "Process options"
 .TP
 .BR \-\-exit\-on\-parent\-death
-Exit the program if the parent process is dead. Required \fBHAS_PDEATHSIG\fR feature. Default: disabled.
+Exit the program if the parent process is dead. Required \fBWITH_PDEATHSIG\fR feature. Default: disabled.
+.TP
+.BR \-\-exit\-on\-device\-error
+Exit on any device error instead of polling until success. Default: disabled.
 .TP
 .BR \-\-exit\-on\-no\-clients \fIsec
 Exit the program if there have been no stream or sink clients or any HTTP requests in the last N seconds. Default: 0 (disabled).

pkg/arch/PKGBUILD

@@ -3,7 +3,7 @@
 
 
 pkgname=ustreamer
-pkgver=6.21
+pkgver=6.48
 pkgrel=1
 pkgdesc="Lightweight and fast MJPEG-HTTP streamer"
 url="https://github.com/pikvm/ustreamer"
@@ -18,7 +18,7 @@ md5sums=(SKIP)
 _options="WITH_GPIO=1 WITH_SYSTEMD=1"
 if [ -e /usr/bin/python3 ]; then
 	_options="$_options WITH_PYTHON=1"
-	depends+=(python)
+	depends+=("python>=3.14" "python<3.15")
 	makedepends+=(python-setuptools python-pip python-build python-wheel)
 fi
 if [ -e /usr/include/janus/plugins/plugin.h ];then

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=6.21
+PKG_VERSION:=6.48
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 
@@ -25,7 +25,7 @@ define Package/ustreamer
   SECTION:=multimedia
   CATEGORY:=Multimedia
   TITLE:=uStreamer
-  DEPENDS:=+libpthread +libjpeg +libv4l +libbsd +libevent2 +libevent2-core +libevent2-extra +libevent2-pthreads
+  DEPENDS:=+libatomic +libpthread +libjpeg +libv4l +libbsd +libevent2 +libevent2-core +libevent2-extra +libevent2-pthreads
   URL:=https://github.com/pikvm/ustreamer
 endef
 

python/Makefile

@@ -1,5 +1,3 @@
--include ../config.mk
-
 R_DESTDIR ?=
 PREFIX ?= /usr/local
 
@@ -8,7 +6,7 @@ PY ?= python3
 
 # =====
 all: root
-root: $(shell find src -type f,l)
+root: $(shell find src -type f,l) setup.py
 	$(info == PY_BUILD ustreamer-*.so)
 	rm -rf root
 	$(ECHO) $(PY) -m build --skip-dependency-check --no-isolation

python/setup.py

@@ -5,19 +5,36 @@ from setuptools import setup
 
 
 # =====
-def _find_sources(suffix: str) -> list[str]:
+def _find_sources() -> list[str]:
     sources: list[str] = []
     for (root_path, _, names) in os.walk("src"):
         for name in names:
-            if name.endswith(suffix):
+            if name.endswith(".c"):
                 sources.append(os.path.join(root_path, name))
     return sources
 
 
-if __name__ == "__main__":
+def _find_flags() -> dict[str, bool]:
+    return {
+        key[3:]: (value.strip().lower() in ["true", "on", "1"])
+        for (key, value) in sorted(os.environ.items())
+        if key.startswith("MK_WITH_")
+    }
+
+
+def _make_d_features(flags: dict[str, bool]) -> str:
+    features = " ".join([
+        f"{key}={int(value)}"
+        for (key, value) in flags.items()
+    ])
+    return f"-DUS_FEATURES=\"{features}\""
+
+
+def main() -> None:
+    flags = _find_flags()
     setup(
         name="ustreamer",
-        version="6.21",
+        version="6.48",
         description="uStreamer tools",
         author="Maxim Devaev",
         author_email="mdevaev@gmail.com",
@@ -26,9 +43,16 @@ if __name__ == "__main__":
             Extension(
                 "ustreamer",
                 libraries=["rt", "m", "pthread"],
-                extra_compile_args=["-std=c17", "-D_GNU_SOURCE"],
+                extra_compile_args=[
+                    "-std=c17", "-D_GNU_SOURCE",
+                    _make_d_features(flags),
+                ],
                 undef_macros=["NDEBUG"],
-                sources=_find_sources(".c"),
+                sources=_find_sources(),
             ),
         ],
     )
+
+
+if __name__ == "__main__":
+    main()

python/src/uslibs/const.h

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

python/src/ustreamer.c

@@ -1,3 +1,25 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPEG-HTTP streamer.                   #
+#                                                                            #
+#    Copyright (C) 2018-2024  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 <stdio.h>
 #include <stdint.h>
 #include <stdbool.h>
@@ -13,6 +35,7 @@
 
 #include <Python.h>
 
+#include "uslibs/const.h"
 #include "uslibs/types.h"
 #include "uslibs/errors.h"
 #include "uslibs/tools.h"
@@ -48,6 +71,8 @@ static void _MemsinkObject_destroy_internals(_MemsinkObject *self) {
 }
 
 static int _MemsinkObject_init(_MemsinkObject *self, PyObject *args, PyObject *kwargs) {
+	self->fd = -1;
+
 	self->lock_timeout = 1;
 	self->wait_timeout = 1;
 
@@ -228,7 +253,8 @@ static PyObject *_MemsinkObject_wait_frame(_MemsinkObject *self, PyObject *args,
 			} \
 			Py_DECREF(m_tmp); \
 		}
-#	define SET_NUMBER(x_key, x_from, x_to) SET_VALUE(#x_key, Py##x_to##_From##x_from(self->frame->x_key))
+#	define SET_NUMBER(x_key, x_from, x_to) \
+		SET_VALUE(#x_key, Py##x_to##_From##x_from(self->frame->x_key))
 
 	SET_NUMBER(width, Long, Long);
 	SET_NUMBER(height, Long, Long);
@@ -237,7 +263,8 @@ static PyObject *_MemsinkObject_wait_frame(_MemsinkObject *self, PyObject *args,
 	SET_NUMBER(online, Long, Bool);
 	SET_NUMBER(key, Long, Bool);
 	SET_NUMBER(gop, Long, Long);
-	SET_NUMBER(grab_ts, Double, Float);
+	SET_NUMBER(grab_begin_ts, Double, Float);
+	SET_NUMBER(grab_end_ts, Double, Float);
 	SET_NUMBER(encode_begin_ts, Double, Float);
 	SET_NUMBER(encode_end_ts, Double, Float);
 	SET_VALUE("data", PyBytes_FromStringAndSize((const char*)self->frame->data, self->frame->used));
@@ -275,7 +302,8 @@ static PyMethodDef _MemsinkObject_methods[] = {
 };
 
 static PyGetSetDef _MemsinkObject_getsets[] = {
-#	define ADD_GETTER(x_field) {.name = #x_field, .get = (getter)_MemsinkObject_getter_##x_field}
+#	define ADD_GETTER(x_field) \
+		{.name = #x_field, .get = (getter)_MemsinkObject_getter_##x_field}
 	ADD_GETTER(obj),
 	ADD_GETTER(lock_timeout),
 	ADD_GETTER(wait_timeout),
@@ -304,20 +332,30 @@ static PyModuleDef _Module = {
 };
 
 PyMODINIT_FUNC PyInit_ustreamer(void) {
-	PyObject *module = PyModule_Create(&_Module);
-	if (module == NULL) {
-		return NULL;
-	}
+	PyObject *module = NULL;
 
 	if (PyType_Ready(&_MemsinkType) < 0) {
-		return NULL;
+		goto error;
 	}
 
-	Py_INCREF(&_MemsinkType);
-
-	if (PyModule_AddObject(module, "Memsink", (PyObject*)&_MemsinkType) < 0) {
-		return NULL;
+	if ((module = PyModule_Create(&_Module)) == NULL) {
+		goto error;
 	}
 
+#	define ADD(x_what, x_key, x_value) \
+		{ if (PyModule_Add##x_what(module, x_key, x_value) < 0) { goto error; } }
+	ADD(StringConstant, "__version__", US_VERSION);
+	ADD(StringConstant, "VERSION", US_VERSION);
+	ADD(IntConstant, "VERSION_MAJOR", US_VERSION_MAJOR);
+	ADD(IntConstant, "VERSION_MINOR", US_VERSION_MINOR);
+	ADD(StringConstant, "FEATURES", US_FEATURES); // Defined in setup.py
+	ADD(ObjectRef, "Memsink", (PyObject*)&_MemsinkType);
+#	undef ADD
 	return module;
+
+error:
+	if (module != NULL) {
+		Py_DECREF(module);
+	}
+	return NULL;
 }

src/Makefile

@@ -2,6 +2,7 @@ R_DESTDIR ?=
 PREFIX ?= /usr/local
 
 CC ?= gcc
+PKG_CONFIG ?= pkg-config
 CFLAGS ?= -O3
 LDFLAGS ?=
 
@@ -13,9 +14,9 @@ _V4P = ustreamer-v4p.bin
 
 _CFLAGS = -MD -c -std=c17 -Wall -Wextra -D_GNU_SOURCE $(CFLAGS)
 
-_USTR_LDFLAGS = $(LDFLAGS) -lm -ljpeg -pthread -lrt -latomic -levent -levent_pthreads
-_DUMP_LDFLAGS = $(LDFLAGS) -lm -ljpeg -pthread -lrt -latomic
-_V4P_LDFLAGS = $(LDFLAGS) -lm -ljpeg -pthread -lrt -latomic
+_USTR_LDFLAGS = $(LDFLAGS) -lm -ljpeg -pthread -lrt -levent -levent_pthreads
+_DUMP_LDFLAGS = $(LDFLAGS) -lm -ljpeg -pthread -lrt
+_V4P_LDFLAGS = $(LDFLAGS) -lm -ljpeg -pthread -lrt
 
 _USTR_SRCS = $(shell ls \
 	libs/*.c \
@@ -40,53 +41,59 @@ _V4P_SRCS = $(shell ls \
 
 _BUILD = build
 
-
 _TARGETS = $(_USTR) $(_DUMP)
 _OBJS = $(_USTR_SRCS:%.c=$(_BUILD)/%.o) $(_DUMP_SRCS:%.c=$(_BUILD)/%.o)
 
 
-define optbool
-$(filter $(shell echo $(1) | tr A-Z a-z), yes on 1)
-endef
+# =====
+ifneq ($(shell sh -c 'uname 2>/dev/null || echo Unknown'),FreeBSD)
+override _USTR_LDFLAGS += -latomic
+override _DUMP_LDFLAGS += -latomic
+override _V4P_LDFLAGS += -latomic
+endif
 
+ifneq ($(MK_WITH_PYTHON),)
+override _CFLAGS += -DMK_WITH_PYTHON
+endif
 
-ifneq ($(call optbool,$(WITH_GPIO)),)
-override _CFLAGS += -DWITH_GPIO $(shell pkg-config --atleast-version=2 libgpiod 2> /dev/null && echo -DHAVE_GPIOD2)
+ifneq ($(MK_WITH_JANUS),)
+override _CFLAGS += -DMK_WITH_JANUS
+endif
+
+ifneq ($(MK_WITH_GPIO),)
+override _CFLAGS += -DMK_WITH_GPIO -DWITH_GPIO $(shell $(PKG_CONFIG) --atleast-version=2 libgpiod 2> /dev/null && echo -DHAVE_GPIOD2)
 override _USTR_LDFLAGS += -lgpiod
 override _USTR_SRCS += $(shell ls ustreamer/gpio/*.c)
 endif
 
-
-ifneq ($(call optbool,$(WITH_SYSTEMD)),)
-override _CFLAGS += -DWITH_SYSTEMD
+ifneq ($(MK_WITH_SYSTEMD),)
+override _CFLAGS += -DMK_WITH_SYSTEMD -DWITH_SYSTEMD
 override _USTR_LDFLAGS += -lsystemd
 override _USTR_SRCS += $(shell ls ustreamer/http/systemd/*.c)
 endif
 
-
-WITH_PTHREAD_NP ?= 1
-ifneq ($(call optbool,$(WITH_PTHREAD_NP)),)
-override _CFLAGS += -DWITH_PTHREAD_NP
+ifneq ($(MK_WITH_PTHREAD_NP),)
+override _CFLAGS += -DMK_WITH_PTHREAD_NP -DWITH_PTHREAD_NP
 endif
 
-
-WITH_SETPROCTITLE ?= 1
-ifneq ($(call optbool,$(WITH_SETPROCTITLE)),)
-override _CFLAGS += -DWITH_SETPROCTITLE
+ifneq ($(MK_WITH_SETPROCTITLE),)
+override _CFLAGS += -DMK_WITH_SETPROCTITLE -DWITH_SETPROCTITLE
 ifeq ($(shell uname -s | tr A-Z a-z),linux)
 override _USTR_LDFLAGS += -lbsd
 endif
 endif
 
+ifneq ($(MK_WITH_PDEATHSIG),)
+override _CFLAGS += -DMK_WITH_PDEATHSIG -DWITH_PDEATHSIG
+endif
 
-WITH_V4P ?= 0
-ifneq ($(call optbool,$(WITH_V4P)),)
+ifneq ($(MK_WITH_V4P),)
 override _TARGETS += $(_V4P)
 override _OBJS += $(_V4P_SRCS:%.c=$(_BUILD)/%.o)
-override _CFLAGS += -DWITH_V4P $(shell pkg-config --cflags libdrm)
-override _V4P_LDFLAGS += $(shell pkg-config --libs libdrm)
+override _CFLAGS += -DMK_WITH_V4P -DWITH_V4P $(shell $(PKG_CONFIG) --cflags libdrm)
+override _V4P_LDFLAGS += $(shell $(PKG_CONFIG) --libs libdrm)
 override _USTR_SRCS += $(shell ls libs/drm/*.c)
-override _USTR_LDFLAGS += $(shell pkg-config --libs libdrm)
+override _USTR_LDFLAGS += $(shell $(PKG_CONFIG) --libs libdrm)
 endif
 
 

src/dump/file.c

@@ -24,54 +24,73 @@
 
 
 us_output_file_s *us_output_file_init(const char *path, bool json) {
-	us_output_file_s *output;
-	US_CALLOC(output, 1);
+	us_output_file_s *out;
+	US_CALLOC(out, 1);
 
 	if (!strcmp(path, "-")) {
 		US_LOG_INFO("Using output: <stdout>");
-		output->fp = stdout;
+		out->fp = stdout;
 	} else {
 		US_LOG_INFO("Using output: %s", path);
-		if ((output->fp = fopen(path, "wb")) == NULL) {
+		if ((out->fp = fopen(path, "wb")) == NULL) {
 			US_LOG_PERROR("Can't open output file");
 			goto error;
 		}
 	}
 
-	output->json = json;
-	return output;
+	out->json = json;
+	return out;
 
 	error:
-		us_output_file_destroy(output);
+		us_output_file_destroy(out);
 		return NULL;
 }
 
-void us_output_file_write(void *v_output, const us_frame_s *frame) {
-	us_output_file_s *output = v_output;
-	if (output->json) {
-		us_base64_encode(frame->data, frame->used, &output->base64_data, &output->base64_allocated);
-		fprintf(output->fp,
-			"{\"size\": %zu, \"width\": %u, \"height\": %u,"
-			" \"format\": %u, \"stride\": %u, \"online\": %u, \"key\": %u, \"gop\": %u,"
-			" \"grab_ts\": %.3Lf, \"encode_begin_ts\": %.3Lf, \"encode_end_ts\": %.3Lf,"
+void us_output_file_write(void *v_out, const us_frame_s *frame) {
+	us_output_file_s *out = v_out;
+	if (out->json) {
+		us_base64_encode(frame->data, frame->used, &out->base64_data, &out->base64_allocated);
+		fprintf(
+			out->fp,
+			"{\"size\": %zu,"
+			" \"width\": %u,"
+			" \"height\": %u,"
+			" \"format\": %u,"
+			" \"stride\": %u,"
+			" \"online\": %u,"
+			" \"key\": %u,"
+			" \"gop\": %u,"
+			" \"grab_begin_ts\": %.3Lf,"
+			" \"grab_end_ts\": %.3Lf,"
+			" \"encode_begin_ts\": %.3Lf,"
+			" \"encode_end_ts\": %.3Lf,"
 			" \"data\": \"%s\"}\n",
-			frame->used, frame->width, frame->height,
-			frame->format, frame->stride, frame->online, frame->key, frame->gop,
-			frame->grab_ts, frame->encode_begin_ts, frame->encode_end_ts,
-			output->base64_data);
+			frame->used,
+			frame->width,
+			frame->height,
+			frame->format,
+			frame->stride,
+			frame->online,
+			frame->key,
+			frame->gop,
+			frame->grab_begin_ts,
+			frame->grab_end_ts,
+			frame->encode_begin_ts,
+			frame->encode_end_ts,
+			out->base64_data);
 	} else {
-		fwrite(frame->data, 1, frame->used, output->fp);
+		fwrite(frame->data, 1, frame->used, out->fp);
 	}
-	fflush(output->fp);
+	fflush(out->fp);
 }
 
-void us_output_file_destroy(void *v_output) {
-	us_output_file_s *output = v_output;
-	US_DELETE(output->base64_data, free);
-	if (output->fp && output->fp != stdout) {
-		if (fclose(output->fp) < 0) {
+void us_output_file_destroy(void *v_out) {
+	us_output_file_s *out = v_out;
+	US_DELETE(out->base64_data, free);
+	if (out->fp && out->fp != stdout) {
+		if (fclose(out->fp) < 0) {
 			US_LOG_PERROR("Can't close output file");
 		}
 	}
-	free(output);
+	free(out);
 }

src/dump/file.h

@@ -45,5 +45,5 @@ typedef struct {
 
 
 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);
+void us_output_file_write(void *v_out, const us_frame_s *frame);
+void us_output_file_destroy(void *v_out);

src/dump/main.c

@@ -28,7 +28,6 @@
 #include <float.h>
 #include <getopt.h>
 #include <errno.h>
-#include <assert.h>
 
 #include "../libs/const.h"
 #include "../libs/errors.h"
@@ -90,17 +89,19 @@ volatile bool _g_stop = false;
 
 
 typedef struct {
-	void *v_output;
-	void (*write)(void *v_output, const us_frame_s *frame);
-	void (*destroy)(void *v_output);
+	void *v_out;
+	void (*write)(void *v_out, const us_frame_s *frame);
+	void (*destroy)(void *v_out);
 } _output_context_s;
 
 
 static void _signal_handler(int signum);
 
 static int _dump_sink(
-	const char *sink_name, unsigned sink_timeout,
-	long long count, long double interval,
+	const char *sink_name,
+	unsigned sink_timeout,
+	long long count,
+	long double interval,
 	bool key_required,
 	_output_context_s *ctx);
 
@@ -113,8 +114,8 @@ int main(int argc, char *argv[]) {
 
 	const char *sink_name = NULL;
 	unsigned sink_timeout = 1;
-	const char *output_path = NULL;
-	bool output_json = false;
+	const char *out_path = NULL;
+	bool out_json = false;
 	long long count = 0;
 	long double interval = 0;
 	bool key_required = false;
@@ -151,8 +152,8 @@ int main(int argc, char *argv[]) {
 		switch (ch) {
 			case _O_SINK:			OPT_SET(sink_name, optarg);
 			case _O_SINK_TIMEOUT:	OPT_NUMBER("--sink-timeout", sink_timeout, 1, 60, 0);
-			case _O_OUTPUT:			OPT_SET(output_path, optarg);
-			case _O_OUTPUT_JSON:	OPT_SET(output_json, true);
+			case _O_OUTPUT:			OPT_SET(out_path, optarg);
+			case _O_OUTPUT_JSON:	OPT_SET(out_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);
@@ -183,8 +184,8 @@ int main(int argc, char *argv[]) {
 
 	_output_context_s ctx = {0};
 
-	if (output_path && output_path[0] != '\0') {
-		if ((ctx.v_output = (void*)us_output_file_init(output_path, output_json)) == NULL) {
+	if (out_path && out_path[0] != '\0') {
+		if ((ctx.v_out = (void*)us_output_file_init(out_path, out_json)) == NULL) {
 			return 1;
 		}
 		ctx.write = us_output_file_write;
@@ -193,8 +194,8 @@ int main(int argc, char *argv[]) {
 
 	us_install_signals_handler(_signal_handler, false);
 	const int retval = abs(_dump_sink(sink_name, sink_timeout, count, interval, key_required, &ctx));
-	if (ctx.v_output && ctx.destroy) {
-		ctx.destroy(ctx.v_output);
+	if (ctx.v_out && ctx.destroy) {
+		ctx.destroy(ctx.v_out);
 	}
 	return retval;
 }
@@ -208,10 +209,13 @@ static void _signal_handler(int signum) {
 }
 
 static int _dump_sink(
-	const char *sink_name, unsigned sink_timeout,
-	long long count, long double interval,
+	const char *sink_name,
+	unsigned sink_timeout,
+	long long count,
+	long double interval,
 	bool key_required,
-	_output_context_s *ctx) {
+	_output_context_s *ctx
+) {
 
 	int retval = -1;
 
@@ -240,21 +244,27 @@ static int _dump_sink(
 			const long double now = us_get_now_monotonic();
 
 			char fourcc_str[8];
-			US_LOG_VERBOSE("Frame: %s - %ux%u -- online=%d, key=%d, kr=%d, gop=%u, latency=%.3Lf, backlog=%.3Lf, size=%zu",
+			US_LOG_VERBOSE("%s %.3Lf - %s %ux%u - gop=%u, key=%u, kr=%u - GRAB=%.3Lf ~~%.3Lf~~ ENC=%.3Lf ~~> LAT=%.3Lf - size=%zu",
+				(frame->online ? " ON" : "OFF"),
+				(last_ts ? now - last_ts : 0),
 				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->width,
+				frame->height,
+				frame->gop,
+				frame->key,
+				key_requested,
+				frame->grab_end_ts - frame->grab_begin_ts,
+				frame->encode_begin_ts - frame->grab_end_ts,
+				frame->encode_end_ts - frame->encode_begin_ts,
+				now - frame->grab_begin_ts,
 				frame->used);
-			last_ts = now;
 
-			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);
+			last_ts = now;
 
 			us_fpsi_update(fpsi, true, NULL);
 
-			if (ctx->v_output != NULL) {
-				ctx->write(ctx->v_output, frame);
+			if (ctx->v_out != NULL) {
+				ctx->write(ctx->v_out, frame);
 			}
 
 			if (count >= 0) {

src/libs/array.h

@@ -22,16 +22,16 @@
 
 #pragma once
 
-#include <assert.h>
+#include "tools.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]; \
+		US_A(x_start <= m_len); \
+		for (int m_i = x_start; m_i < m_len; ++m_i) { \
+			__typeof__((x_array)[0]) *const x_item_ptr = &x_array[m_i]; \
 			__VA_ARGS__ \
 		} \
 	}

src/libs/base64.c

@@ -54,8 +54,8 @@ void us_base64_encode(const u8 *data, uz size, char **encoded, uz *allocated) {
 		}
 	}
 
-	for (uint data_index = 0, encoded_index = 0; data_index < size;) {
-#		define OCTET(_name) uint _name = (data_index < size ? (u8)data[data_index++] : 0)
+	for (uint data_i = 0, encoded_i = 0; data_i < size;) {
+#		define OCTET(_name) uint _name = (data_i < size ? (u8)data[data_i++] : 0)
 		OCTET(octet_a);
 		OCTET(octet_b);
 		OCTET(octet_c);
@@ -63,7 +63,7 @@ void us_base64_encode(const u8 *data, uz size, char **encoded, uz *allocated) {
 
 		const uint triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
 
-#		define ENCODE(_offset) (*encoded)[encoded_index++] = _ENCODING_TABLE[(triple >> _offset * 6) & 0x3F]
+#		define ENCODE(_offset) (*encoded)[encoded_i++] = _ENCODING_TABLE[(triple >> _offset * 6) & 0x3F]
 		ENCODE(3);
 		ENCODE(2);
 		ENCODE(1);

src/libs/capture.c

@@ -30,7 +30,6 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
-#include <assert.h>
 
 #include <sys/select.h>
 #include <sys/mman.h>
@@ -48,6 +47,7 @@
 #include "threading.h"
 #include "frame.h"
 #include "xioctl.h"
+#include "tc358743.h"
 
 
 static const struct {
@@ -67,6 +67,9 @@ static const struct {
 	{"YUYV",	V4L2_PIX_FMT_YUYV},
 	{"YVYU",	V4L2_PIX_FMT_YVYU},
 	{"UYVY",	V4L2_PIX_FMT_UYVY},
+	{"YUV420",	V4L2_PIX_FMT_YUV420},
+	{"YVU420",	V4L2_PIX_FMT_YVU420},
+	{"GREY",	V4L2_PIX_FMT_GREY},
 	{"RGB565",	V4L2_PIX_FMT_RGB565},
 	{"RGB24",	V4L2_PIX_FMT_RGB24},
 	{"BGR24",	V4L2_PIX_FMT_BGR24},
@@ -99,12 +102,21 @@ static int _capture_open_export_to_dma(us_capture_s *cap);
 static int _capture_apply_resolution(us_capture_s *cap, uint width, uint height, float hz);
 
 static void _capture_apply_controls(const us_capture_s *cap);
+
 static int _capture_query_control(
-	const us_capture_s *cap, struct v4l2_queryctrl *query,
-	const char *name, uint cid, bool quiet);
+	const us_capture_s *cap,
+	struct v4l2_queryctrl *query,
+	const char *name,
+	uint cid,
+	bool quiet);
+
 static void _capture_set_control(
-	const us_capture_s *cap, const struct v4l2_queryctrl *query,
-	const char *name, uint cid, int value, bool quiet);
+	const us_capture_s *cap,
+	const struct v4l2_queryctrl *query,
+	const char *name,
+	uint cid,
+	int value,
+	bool quiet);
 
 static const char *_format_to_string_nullable(uint format);
 static const char *_format_to_string_supported(uint format);
@@ -190,12 +202,18 @@ int us_capture_open(us_capture_s *cap) {
 	_LOG_DEBUG("Capture device fd=%d opened", run->fd);
 
 	if (cap->dv_timings && cap->persistent) {
+		struct v4l2_control ctl = {.id = V4L2_CID_DV_RX_POWER_PRESENT};
+		if (!us_xioctl(run->fd, VIDIOC_G_CTRL, &ctl)) {
+			if (!ctl.value) {
+				goto error_no_cable;
+			}
+		}
 		_LOG_DEBUG("Probing DV-timings or QuerySTD ...");
-		if (_capture_open_dv_timings(cap, false) < 0) {
-			US_ONCE_FOR(run->open_error_once, __LINE__, {
-				_LOG_ERROR("No signal from source");
-			});
-			goto error_no_signal;
+		switch (_capture_open_dv_timings(cap, false)) {
+			case 0: break;
+			case US_ERROR_NO_SIGNAL: goto error_no_signal;
+			case US_ERROR_NO_SYNC: goto error_no_sync;
+			default: goto error;
 		}
 	}
 
@@ -213,6 +231,15 @@ int us_capture_open(us_capture_s *cap) {
 	if (_capture_open_format(cap, true) < 0) {
 		goto error;
 	}
+	if (cap->dv_timings && cap->persistent) {
+		struct v4l2_control ctl = {.id = TC358743_CID_LANES_ENOUGH};
+		if (!us_xioctl(run->fd, VIDIOC_G_CTRL, &ctl)) {
+			if (!ctl.value) {
+				_LOG_ERROR("Not enough lanes, hardware can't handle this signal");
+				goto error_no_lanes;
+			}
+		}
+	}
 	_capture_open_hw_fps(cap);
 	_capture_open_jpeg_quality(cap);
 	if (_capture_open_io_method(cap) < 0) {
@@ -245,9 +272,23 @@ error_no_device:
 	us_capture_close(cap);
 	return US_ERROR_NO_DEVICE;
 
-error_no_signal:
+error_no_cable:
 	us_capture_close(cap);
-	return US_ERROR_NO_DATA;
+	return US_ERROR_NO_CABLE;
+
+error_no_signal:
+	US_ONCE_FOR(run->open_error_once, __LINE__, { _LOG_ERROR("No signal from source"); });
+	us_capture_close(cap);
+	return US_ERROR_NO_SIGNAL;
+
+error_no_sync:
+	US_ONCE_FOR(run->open_error_once, __LINE__, { _LOG_ERROR("No sync on signal"); });
+	us_capture_close(cap);
+	return US_ERROR_NO_SYNC;
+
+error_no_lanes:
+	us_capture_close(cap);
+	return US_ERROR_NO_LANES;
 
 error:
 	run->open_error_once = 0;
@@ -273,15 +314,15 @@ void us_capture_close(us_capture_s *cap) {
 	if (run->bufs != NULL) {
 		say = true;
 		_LOG_DEBUG("Releasing HW buffers ...");
-		for (uint index = 0; index < run->n_bufs; ++index) {
-			us_capture_hwbuf_s *hw = &run->bufs[index];
+		for (uint i = 0; i < run->n_bufs; ++i) {
+			us_capture_hwbuf_s *hw = &run->bufs[i];
 
 			US_CLOSE_FD(hw->dma_fd);
 
 			if (cap->io_method == V4L2_MEMORY_MMAP) {
 				if (hw->raw.allocated > 0 && hw->raw.data != NULL) {
 					if (munmap(hw->raw.data, hw->raw.allocated) < 0) {
-						_LOG_PERROR("Can't unmap HW buffer=%u", index);
+						_LOG_PERROR("Can't unmap HW buffer=%u", i);
 					}
 				}
 			} else { // V4L2_MEMORY_USERPTR
@@ -414,23 +455,30 @@ int us_capture_hwbuf_grab(us_capture_s *cap, us_capture_hwbuf_s **hw) {
 	(*hw)->raw.stride = run->stride;
 	(*hw)->raw.online = true;
 	_v4l2_buffer_copy(&buf, &(*hw)->buf);
-	(*hw)->raw.grab_ts = (ldf)((buf.timestamp.tv_sec * (u64)1000) + (buf.timestamp.tv_usec / 1000)) / 1000;
+	(*hw)->raw.grab_begin_ts = (ldf)((buf.timestamp.tv_sec * (u64)1000) + (buf.timestamp.tv_usec / 1000)) / 1000;
+	(*hw)->raw.grab_end_ts = us_get_now_monotonic();
+
+	_LOG_DEBUG("Grabbed HW buffer=%u: bytesused=%u, grab_begin_ts=%.3Lf, grab_end_ts=%.3Lf, latency=%.3Lf, skipped=%u",
+		buf.index,
+		buf.bytesused,
+		(*hw)->raw.grab_begin_ts,
+		(*hw)->raw.grab_end_ts,
+		(*hw)->raw.grab_end_ts - (*hw)->raw.grab_begin_ts,
+		skipped);
 
-	_LOG_DEBUG("Grabbed HW buffer=%u: bytesused=%u, grab_ts=%.3Lf, latency=%.3Lf, skipped=%u",
-		buf.index, buf.bytesused, (*hw)->raw.grab_ts, us_get_now_monotonic() - (*hw)->raw.grab_ts, skipped);
 	return buf.index;
 }
 
 int us_capture_hwbuf_release(const us_capture_s *cap, us_capture_hwbuf_s *hw) {
-	assert(atomic_load(&hw->refs) == 0);
-	const uint index = hw->buf.index;
-	_LOG_DEBUG("Releasing HW buffer=%u ...", index);
+	US_A(atomic_load(&hw->refs) == 0);
+	const uint i = hw->buf.index;
+	_LOG_DEBUG("Releasing HW buffer=%u ...", i);
 	if (us_xioctl(cap->run->fd, VIDIOC_QBUF, &hw->buf) < 0) {
-		_LOG_PERROR("Can't release HW buffer=%u", index);
+		_LOG_PERROR("Can't release HW buffer=%u", i);
 		return -1;
 	}
 	hw->grabbed = false;
-	_LOG_DEBUG("HW buffer=%u released", index);
+	_LOG_DEBUG("HW buffer=%u released", i);
 	return 0;
 }
 
@@ -507,7 +555,7 @@ static void _v4l2_buffer_copy(const struct v4l2_buffer *src, struct v4l2_buffer
 	struct v4l2_plane *dest_planes = dest->m.planes;
 	memcpy(dest, src, sizeof(struct v4l2_buffer));
 	if (src->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
-		assert(dest_planes);
+		US_A(dest_planes);
 		dest->m.planes = dest_planes;
 		memcpy(dest->m.planes, src->m.planes, sizeof(struct v4l2_plane) * VIDEO_MAX_PLANES);
 	}
@@ -536,19 +584,28 @@ bool _capture_is_buffer_valid(const us_capture_s *cap, const struct v4l2_buffer
 	if (us_is_jpeg(cap->run->format)) {
 		if (buf->bytesused < 125) {
 			// https://stackoverflow.com/questions/2253404/what-is-the-smallest-valid-jpeg-file-size-in-bytes
-			_LOG_DEBUG("Discarding invalid frame, too small to be a valid JPEG: bytesused=%u", buf->bytesused);
+			_LOG_DEBUG("Discarding invalid frame, too small to be a valid JPEG: bytesused=%u",
+				buf->bytesused);
 			return false;
 		}
 
-		const u8 *const end_ptr = data + buf->bytesused;
-		const u8 *const eoi_ptr = end_ptr - 2;
-		const u16 eoi_marker = (((u16)(eoi_ptr[0]) << 8) | eoi_ptr[1]);
-		if (eoi_marker != 0xFFD9 && eoi_marker != 0xD900 && eoi_marker != 0x0000) {
+		const u16 begin_marker = (((u16)(data[0]) << 8) | data[1]);
+		if (begin_marker != 0xFFD8) {
+			_LOG_DEBUG("Discarding JPEG frame with invalid header: begin_marker=0x%04x, bytesused=%u",
+				begin_marker, buf->bytesused);
+			return false;
+		}
+
+		const u8 *const end_ptr = data + buf->bytesused - 2;
+		const u16 end_marker = (((u16)(end_ptr[0]) << 8) | end_ptr[1]);
+		if (end_marker != 0xFFD9 && end_marker != 0xD900 && end_marker != 0x0000) {
 			if (!cap->allow_truncated_frames) {
-				_LOG_DEBUG("Discarding truncated JPEG frame: eoi_marker=0x%04x, bytesused=%u", eoi_marker, buf->bytesused);
+				_LOG_DEBUG("Discarding truncated JPEG frame: end_marker=0x%04x, bytesused=%u",
+					end_marker, buf->bytesused);
 				return false;
 			}
-			_LOG_DEBUG("Got truncated JPEG frame: eoi_marker=0x%04x, bytesused=%u", eoi_marker, buf->bytesused);
+			_LOG_DEBUG("Got truncated JPEG frame: end_marker=0x%04x, bytesused=%u",
+				end_marker, buf->bytesused);
 		}
 	}
 
@@ -617,6 +674,10 @@ static int _capture_open_dv_timings(us_capture_s *cap, bool apply) {
 		// TC358743 errors here (see in the kernel: drivers/media/i2c/tc358743.c):
 		//   - ENOLINK: No valid signal (SYS_STATUS & MASK_S_TMDS)
 		//   - ENOLCK:  No sync on signal (SYS_STATUS & MASK_S_SYNC)
+		switch (errno) {
+			case ENOLINK: return US_ERROR_NO_SIGNAL;
+			case ENOLCK: return US_ERROR_NO_SYNC;
+		}
 		dv_errno = errno;
 		goto querystd;
 	} else if (!apply) {
@@ -779,10 +840,8 @@ static int _capture_open_format(us_capture_s *cap, bool first) {
 	return 0;
 }
 
-static void _capture_open_hw_fps(us_capture_s *cap) {
-	us_capture_runtime_s *const run = cap->run;
-
-	run->hw_fps = 0;
+static void _capture_open_hw_fps(us_capture_s *cap) { // cppcheck-suppress constParameterPointer
+	const us_capture_runtime_s *const run = cap->run;
 
 	struct v4l2_streamparm setfps = {.type = run->capture_type};
 	_LOG_DEBUG("Querying HW FPS ...");
@@ -800,36 +859,31 @@ static void _capture_open_hw_fps(us_capture_s *cap) {
 		return;
 	}
 
-#	define SETFPS_TPF(x_next) setfps.parm.capture.timeperframe.x_next
+#	define TPF(x_next) setfps.parm.capture.timeperframe.x_next
 
 	US_MEMSET_ZERO(setfps);
 	setfps.type = run->capture_type;
-	SETFPS_TPF(numerator) = 1;
-	SETFPS_TPF(denominator) = (cap->desired_fps == 0 ? 255 : cap->desired_fps);
+	TPF(numerator) = 1;
+	TPF(denominator) = -1; // Request maximum possible FPS
 
 	if (us_xioctl(run->fd, VIDIOC_S_PARM, &setfps) < 0) {
 		_LOG_PERROR("Can't set HW FPS");
 		return;
 	}
 
-	if (SETFPS_TPF(numerator) != 1) {
-		_LOG_ERROR("Invalid HW FPS numerator: %u != 1", SETFPS_TPF(numerator));
+	if (TPF(numerator) != 1) {
+		_LOG_ERROR("Invalid HW FPS numerator: %u != 1", TPF(numerator));
 		return;
 	}
 
-	if (SETFPS_TPF(denominator) == 0) { // Не знаю, бывает ли так, но пускай на всякий случай
+	if (TPF(denominator) == 0) { // Не знаю, бывает ли так, но пускай на всякий случай
 		_LOG_ERROR("Invalid HW FPS denominator: 0");
 		return;
 	}
 
-	run->hw_fps = SETFPS_TPF(denominator);
-	if (cap->desired_fps != run->hw_fps) {
-		_LOG_INFO("Using HW FPS: %u -> %u (coerced)", cap->desired_fps, run->hw_fps);
-	} else {
-		_LOG_INFO("Using HW FPS: %u", run->hw_fps);
-	}
+	_LOG_INFO("Using HW FPS: %u/%u", TPF(numerator), TPF(denominator));
 
-#	undef SETFPS_TPF
+#	undef TPF
 }
 
 static void _capture_open_jpeg_quality(us_capture_s *cap) {
@@ -856,7 +910,7 @@ static int _capture_open_io_method(us_capture_s *cap) {
 	switch (cap->io_method) {
 		case V4L2_MEMORY_MMAP: return _capture_open_io_method_mmap(cap);
 		case V4L2_MEMORY_USERPTR: return _capture_open_io_method_userptr(cap);
-		default: assert(0 && "Unsupported IO method");
+		default: US_RAISE("Unsupported IO method");
 	}
 	return -1;
 }
@@ -917,7 +971,7 @@ static int _capture_open_io_method_mmap(us_capture_s *cap) {
 			_LOG_PERROR("Can't map device buffer=%u", run->n_bufs);
 			return -1;
 		}
-		assert(hw->raw.data != NULL);
+		US_A(hw->raw.data != NULL);
 		hw->raw.allocated = buf_size;
 
 		if (run->capture_mplane) {
@@ -959,7 +1013,7 @@ static int _capture_open_io_method_userptr(us_capture_s *cap) {
 
 	for (run->n_bufs = 0; run->n_bufs < req.count; ++run->n_bufs) {
 		us_capture_hwbuf_s *hw = &run->bufs[run->n_bufs];
-		assert((hw->raw.data = aligned_alloc(page_size, buf_size)) != NULL);
+		US_A((hw->raw.data = aligned_alloc(page_size, buf_size)) != NULL);
 		memset(hw->raw.data, 0, buf_size);
 		hw->raw.allocated = buf_size;
 		if (run->capture_mplane) {
@@ -972,12 +1026,12 @@ static int _capture_open_io_method_userptr(us_capture_s *cap) {
 static int _capture_open_queue_buffers(us_capture_s *cap) {
 	us_capture_runtime_s *const run = cap->run;
 
-	for (uint index = 0; index < run->n_bufs; ++index) {
+	for (uint i = 0; i < run->n_bufs; ++i) {
 		struct v4l2_buffer buf = {0};
 		struct v4l2_plane planes[VIDEO_MAX_PLANES] = {0};
 		buf.type = run->capture_type;
 		buf.memory = cap->io_method;
-		buf.index = index;
+		buf.index = i;
 		if (run->capture_mplane) {
 			buf.m.planes = planes;
 			buf.length = 1;
@@ -986,11 +1040,11 @@ static int _capture_open_queue_buffers(us_capture_s *cap) {
 		if (cap->io_method == V4L2_MEMORY_USERPTR) {
 			// I am not sure, may be this is incorrect for mplane device, 
 			// but i don't have one which supports V4L2_MEMORY_USERPTR
-			buf.m.userptr = (unsigned long)run->bufs[index].raw.data;
-			buf.length = run->bufs[index].raw.allocated;
+			buf.m.userptr = (unsigned long)run->bufs[i].raw.data;
+			buf.length = run->bufs[i].raw.allocated;
 		}
 
-		_LOG_DEBUG("Calling us_xioctl(VIDIOC_QBUF) for buffer=%u ...", index);
+		_LOG_DEBUG("Calling us_xioctl(VIDIOC_QBUF) for buffer=%u ...", i);
 		if (us_xioctl(run->fd, VIDIOC_QBUF, &buf) < 0) {
 			_LOG_PERROR("Can't VIDIOC_QBUF");
 			return -1;
@@ -1002,23 +1056,23 @@ static int _capture_open_queue_buffers(us_capture_s *cap) {
 static int _capture_open_export_to_dma(us_capture_s *cap) {
 	us_capture_runtime_s *const run = cap->run;
 
-	for (uint index = 0; index < run->n_bufs; ++index) {
+	for (uint i = 0; i < run->n_bufs; ++i) {
 		struct v4l2_exportbuffer exp = {
 			.type = run->capture_type,
-			.index = index,
+			.index = i,
 		};
-		_LOG_DEBUG("Exporting device buffer=%u to DMA ...", index);
+		_LOG_DEBUG("Exporting device buffer=%u to DMA ...", i);
 		if (us_xioctl(run->fd, VIDIOC_EXPBUF, &exp) < 0) {
-			_LOG_PERROR("Can't export device buffer=%u to DMA", index);
+			_LOG_PERROR("Can't export device buffer=%u to DMA", i);
 			goto error;
 		}
-		run->bufs[index].dma_fd = exp.fd;
+		run->bufs[i].dma_fd = exp.fd;
 	}
 	return 0;
 
 error:
-	for (uint index = 0; index < run->n_bufs; ++index) {
-		US_CLOSE_FD(run->bufs[index].dma_fd);
+	for (uint i = 0; i < run->n_bufs; ++i) {
+		US_CLOSE_FD(run->bufs[i].dma_fd);
 	}
 	return -1;
 }
@@ -1097,9 +1151,12 @@ static void _capture_apply_controls(const us_capture_s *cap) {
 }
 
 static int _capture_query_control(
-	const us_capture_s *cap, struct v4l2_queryctrl *query,
-	const char *name, uint cid, bool quiet) {
-
+	const us_capture_s *cap,
+	struct v4l2_queryctrl *query,
+	const char *name,
+	uint cid,
+	bool quiet
+) {
 	// cppcheck-suppress redundantPointerOp
 	US_MEMSET_ZERO(*query);
 	query->id = cid;
@@ -1114,9 +1171,13 @@ static int _capture_query_control(
 }
 
 static void _capture_set_control(
-	const us_capture_s *cap, const struct v4l2_queryctrl *query,
-	const char *name, uint cid, int value, bool quiet) {
-
+	const us_capture_s *cap,
+	const struct v4l2_queryctrl *query,
+	const char *name,
+	uint cid,
+	int value,
+	bool quiet
+) {
 	if (value < query->minimum || value > query->maximum || value % query->step != 0) {
 		if (!quiet) {
 			_LOG_ERROR("Invalid value %d of control %s: min=%d, max=%d, default=%d, step=%u",

src/libs/capture.h

@@ -39,7 +39,7 @@
 #define US_VIDEO_MAX_FPS		((uint)120)
 
 #define US_STANDARDS_STR		"PAL, NTSC, SECAM"
-#define US_FORMATS_STR			"YUYV, YVYU, UYVY, RGB565, RGB24, BGR24, MJPEG, JPEG"
+#define US_FORMATS_STR			"YUYV, YVYU, UYVY, YUV420, YVU420, RGB565, RGB24, BGR24, GREY, MJPEG, JPEG"
 #define US_IO_METHODS_STR		"MMAP, USERPTR"
 
 
@@ -58,7 +58,6 @@ typedef struct {
 	uint				format;
 	uint				stride;
 	float				hz;
-	uint				hw_fps;
 	uint				jpeg_quality;
 	uz					raw_size;
 	uint				n_bufs;
@@ -113,7 +112,6 @@ typedef struct {
 	uint				n_bufs;
 	bool				dma_export;
 	bool				dma_required;
-	uint				desired_fps;
 	uz					min_frame_size;
 	bool				allow_truncated_frames;
 	bool				persistent;

src/libs/const.h

@@ -26,7 +26,7 @@
 
 
 #define US_VERSION_MAJOR 6
-#define US_VERSION_MINOR 21
+#define US_VERSION_MINOR 48
 
 #define US_MAKE_VERSION2(_major, _minor) #_major "." #_minor
 #define US_MAKE_VERSION1(_major, _minor) US_MAKE_VERSION2(_major, _minor)

src/libs/drm/drm.c

@@ -28,7 +28,9 @@
 
 #include <sys/mman.h>
 #include <sys/stat.h>
-#include <sys/sysmacros.h>
+#ifdef __linux__
+#	include <sys/sysmacros.h>
+#endif
 
 #include <linux/videodev2.h>
 
@@ -59,11 +61,11 @@ static const char *_connector_type_to_string(u32 type);
 static float _get_refresh_rate(const drmModeModeInfo *mode);
 
 
-#define _LOG_ERROR(x_msg, ...)	US_LOG_ERROR("DRM: " x_msg, ##__VA_ARGS__)
-#define _LOG_PERROR(x_msg, ...)	US_LOG_PERROR("DRM: " x_msg, ##__VA_ARGS__)
+#define _LOG_ERROR(x_msg, ...)		US_LOG_ERROR("DRM: " x_msg, ##__VA_ARGS__)
+#define _LOG_PERROR(x_msg, ...)		US_LOG_PERROR("DRM: " x_msg, ##__VA_ARGS__)
 #define _LOG_INFO(x_msg, ...)		US_LOG_INFO("DRM: " x_msg, ##__VA_ARGS__)
 #define _LOG_VERBOSE(x_msg, ...)	US_LOG_VERBOSE("DRM: " x_msg, ##__VA_ARGS__)
-#define _LOG_DEBUG(x_msg, ...)	US_LOG_DEBUG("DRM: " x_msg, ##__VA_ARGS__)
+#define _LOG_DEBUG(x_msg, ...)		US_LOG_DEBUG("DRM: " x_msg, ##__VA_ARGS__)
 
 
 us_drm_s *us_drm_init(void) {
@@ -97,7 +99,7 @@ void us_drm_destroy(us_drm_s *drm) {
 int us_drm_open(us_drm_s *drm, const us_capture_s *cap) {
 	us_drm_runtime_s *const run = drm->run;
 
-	assert(run->fd < 0);
+	US_A(run->fd < 0);
 
 	switch (_drm_check_status(drm)) {
 		case 0: break;
@@ -162,7 +164,12 @@ int us_drm_open(us_drm_s *drm, const us_capture_s *cap) {
 
 	run->saved_crtc = drmModeGetCrtc(run->fd, run->crtc_id);
 	_LOG_DEBUG("Setting up CRTC ...");
-	if (drmModeSetCrtc(run->fd, run->crtc_id, run->bufs[0].id, 0, 0, &run->conn_id, 1, &run->mode) < 0) {
+	if (drmModeSetCrtc(
+		run->fd,
+		run->crtc_id, run->bufs[0].id,
+		0, 0, // X, Y
+		&run->conn_id, 1, &run->mode
+	) < 0) {
 		_LOG_PERROR("Can't set CRTC");
 		goto error;
 	}
@@ -193,14 +200,15 @@ void us_drm_close(us_drm_s *drm) {
 	if (run->exposing_dma_fd >= 0) {
 		// Нужно подождать, пока dma_fd не освободится, прежде чем прерывать процесс.
 		// Просто на всякий случай.
-		assert(run->fd >= 0);
+		US_A(run->fd >= 0);
 		us_drm_wait_for_vsync(drm);
 		run->exposing_dma_fd = -1;
 	}
 
 	if (run->saved_crtc != NULL) {
 		_LOG_DEBUG("Restoring CRTC ...");
-		if (drmModeSetCrtc(run->fd,
+		if (drmModeSetCrtc(
+			run->fd,
 			run->saved_crtc->crtc_id, run->saved_crtc->buffer_id,
 			run->saved_crtc->x, run->saved_crtc->y,
 			&run->conn_id, 1, &run->saved_crtc->mode
@@ -250,8 +258,8 @@ void us_drm_close(us_drm_s *drm) {
 int us_drm_ensure_no_signal(us_drm_s *drm) {
 	us_drm_runtime_s *const run = drm->run;
 
-	assert(run->fd >= 0);
-	assert(run->opened > 0);
+	US_A(run->fd >= 0);
+	US_A(run->opened > 0);
 
 	const ldf now_ts = us_get_now_monotonic();
 	if (run->blank_at_ts == 0) {
@@ -276,7 +284,7 @@ int us_drm_ensure_no_signal(us_drm_s *drm) {
 }
 
 int us_drm_dpms_power_off(us_drm_s *drm) {
-	assert(drm->run->fd >= 0);
+	US_A(drm->run->fd >= 0);
 	switch (_drm_check_status(drm)) {
 		case 0: break;
 		case US_ERROR_NO_DEVICE: return 0; // Unplugged, nice
@@ -292,7 +300,7 @@ int us_drm_dpms_power_off(us_drm_s *drm) {
 int us_drm_wait_for_vsync(us_drm_s *drm) {
 	us_drm_runtime_s *const run = drm->run;
 
-	assert(run->fd >= 0);
+	US_A(run->fd >= 0);
 	run->blank_at_ts = 0;
 
 	switch (_drm_check_status(drm)) {
@@ -347,8 +355,8 @@ static void _drm_vsync_callback(int fd, uint n_frame, uint sec, uint usec, void
 int us_drm_expose_stub(us_drm_s *drm, us_drm_stub_e stub, const us_capture_s *cap) {
 	us_drm_runtime_s *const run = drm->run;
 
-	assert(run->fd >= 0);
-	assert(run->opened > 0);
+	US_A(run->fd >= 0);
+	US_A(run->opened > 0);
 	run->blank_at_ts = 0;
 
 	switch (_drm_check_status(drm)) {
@@ -361,7 +369,7 @@ int us_drm_expose_stub(us_drm_s *drm, us_drm_stub_e stub, const us_capture_s *ca
 #	define DRAW_MSG(x_msg) us_frametext_draw(run->ft, (x_msg), run->mode.hdisplay, run->mode.vdisplay)
 	switch (stub) {
 		case US_DRM_STUB_BAD_RESOLUTION: {
-			assert(cap != NULL);
+			US_A(cap != NULL);
 			char msg[1024];
 			US_SNPRINTF(msg, 1023,
 				"=== PiKVM ==="
@@ -376,7 +384,7 @@ int us_drm_expose_stub(us_drm_s *drm, us_drm_stub_e stub, const us_capture_s *ca
 			DRAW_MSG("=== PiKVM ===\n \n< UNSUPPORTED CAPTURE FORMAT >");
 			break;
 		case US_DRM_STUB_NO_SIGNAL:
-			DRAW_MSG("=== PiKVM ===\n \n< NO SIGNAL >");
+			DRAW_MSG("=== PiKVM ===\n \n< NO LIVE VIDEO >");
 			break;
 		case US_DRM_STUB_BUSY:
 			DRAW_MSG("=== PiKVM ===\n \n< ONLINE IS ACTIVE >");
@@ -412,8 +420,8 @@ int us_drm_expose_dma(us_drm_s *drm, const us_capture_hwbuf_s *hw) {
 	us_drm_runtime_s *const run = drm->run;
 	us_drm_buffer_s *const buf = &run->bufs[hw->buf.index];
 
-	assert(run->fd >= 0);
-	assert(run->opened == 0);
+	US_A(run->fd >= 0);
+	US_A(run->opened == 0);
 	run->blank_at_ts = 0;
 
 	switch (_drm_check_status(drm)) {
@@ -664,6 +672,15 @@ static drmModeModeInfo *_find_best_mode(drmModeConnector *conn, uint width, uint
 			continue; // Discard interlaced
 		}
 		const float mode_hz = _get_refresh_rate(mode);
+		if (width == 640 && height == 416 && mode->hdisplay == 640 && mode->vdisplay == 480) {
+			// A special case for some ancient DOS device with VGA converter.
+			// @CapnKirk in Discord
+			if (hz > 0 && mode_hz < hz) {
+				best = mode;
+				best->vdisplay = 416;
+				break;
+			}
+		}
 		if (mode->hdisplay == width && mode->vdisplay == height) {
 			best = mode; // Any mode with exact resolution
 			if (hz > 0 && mode_hz == hz) {
@@ -689,8 +706,8 @@ static drmModeModeInfo *_find_best_mode(drmModeConnector *conn, uint width, uint
 	if (best == NULL) {
 		best = (conn->count_modes > 0 ? &conn->modes[0] : NULL);
 	}
-	assert(best == NULL || best->hdisplay > 0);
-	assert(best == NULL || best->vdisplay > 0);
+	US_A(best == NULL || best->hdisplay > 0);
+	US_A(best == NULL || best->vdisplay > 0);
 	return best;
 }
 

src/libs/errors.h

@@ -24,4 +24,8 @@
 
 #define US_ERROR_COMMON		-1
 #define US_ERROR_NO_DEVICE	-2
-#define US_ERROR_NO_DATA	-3
+#define US_ERROR_NO_CABLE	-3
+#define US_ERROR_NO_SIGNAL	-4
+#define US_ERROR_NO_SYNC	-5
+#define US_ERROR_NO_LANES	-6
+#define US_ERROR_NO_DATA	-7

src/libs/fpsi.c

@@ -38,7 +38,7 @@ us_fpsi_s *us_fpsi_init(const char *name, bool with_meta) {
 	US_CALLOC(fpsi, 1);
 	fpsi->name = us_strdup(name);
 	fpsi->with_meta = with_meta;
-	atomic_init(&fpsi->state_sec_ts, 0);
+	atomic_init(&fpsi->state_ts, 0);
 	atomic_init(&fpsi->state, 0);
 	return fpsi;
 }
@@ -56,25 +56,25 @@ void us_fpsi_frame_to_meta(const us_frame_s *frame, us_fpsi_meta_s *meta) {
 
 void us_fpsi_update(us_fpsi_s *fpsi, bool bump, const us_fpsi_meta_s *meta) {
 	if (meta != NULL) {
-		assert(fpsi->with_meta);
+		US_A(fpsi->with_meta);
 	} else {
-		assert(!fpsi->with_meta);
+		US_A(!fpsi->with_meta);
 	}
 
-	const sll now_sec_ts = us_floor_ms(us_get_now_monotonic());
-	if (atomic_load(&fpsi->state_sec_ts) != now_sec_ts) {
+	const sll now_ts = us_floor_ms(us_get_now_monotonic());
+	if (atomic_load(&fpsi->state_ts) != now_ts) {
 		US_LOG_PERF_FPS("FPS: %s: %u", fpsi->name, fpsi->accum);
 
 		// Fast mutex-less store method
 		ull state = (ull)fpsi->accum & 0xFFFF;
 		if (fpsi->with_meta) {
-			assert(meta != NULL);
+			US_A(meta != NULL);
 			state |= (ull)(meta->width & 0xFFFF) << 16;
 			state |= (ull)(meta->height & 0xFFFF) << 32;
 			state |= (ull)(meta->online ? 1 : 0) << 48;
 		}
 		atomic_store(&fpsi->state, state); // Сначала инфа
-		atomic_store(&fpsi->state_sec_ts, now_sec_ts); // Потом время, это важно
+		atomic_store(&fpsi->state_ts, now_ts); // Потом время, это важно
 		fpsi->accum = 0;
 	}
 	if (bump) {
@@ -84,27 +84,24 @@ void us_fpsi_update(us_fpsi_s *fpsi, bool bump, const us_fpsi_meta_s *meta) {
 
 uint us_fpsi_get(us_fpsi_s *fpsi, us_fpsi_meta_s *meta) {
 	if (meta != NULL) {
-		assert(fpsi->with_meta);
-	} else {
-		assert(!fpsi->with_meta);
+		US_A(fpsi->with_meta);
 	}
 
 	// Между чтением инфы и времени может быть гонка,
 	// но это неважно. Если время свежее, до данные тоже
 	// будут свежмими, обратный случай не так важен.
-	const sll now_sec_ts = us_floor_ms(us_get_now_monotonic());
-	const sll state_sec_ts = atomic_load(&fpsi->state_sec_ts); // Сначала время
+	const sll now_ts = us_floor_ms(us_get_now_monotonic());
+	const sll state_ts = atomic_load(&fpsi->state_ts); // Сначала время
 	const ull state = atomic_load(&fpsi->state); // Потом инфа
 
 	uint current = state & 0xFFFF;
-	if (fpsi->with_meta) {
-		assert(meta != NULL);
+	if (fpsi->with_meta && meta != NULL) {
 		meta->width = (state >> 16) & 0xFFFF;
 		meta->height = (state >> 32) & 0xFFFF;
 		meta->online = (state >> 48) & 1;
 	}
 
-	if (state_sec_ts != now_sec_ts && (state_sec_ts + 1) != now_sec_ts) {
+	if (state_ts != now_ts && (state_ts + 1) != now_ts) {
 		// Только текущая или прошлая секунда
 		current = 0;
 	}

src/libs/fpsi.h

@@ -38,7 +38,7 @@ typedef struct {
 	char			*name;
 	bool			with_meta;
 	uint			accum;
-	atomic_llong	state_sec_ts;
+	atomic_llong	state_ts;
 	atomic_ullong	state;
 } us_fpsi_s;
 

src/libs/frame.c

@@ -25,7 +25,6 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
 
 #include <linux/videodev2.h>
 
@@ -36,7 +35,7 @@
 us_frame_s *us_frame_init(void) {
 	us_frame_s *frame;
 	US_CALLOC(frame, 1);
-	us_frame_realloc_data(frame, 512 * 1024);
+	us_frame_realloc_data(frame, 32 * 1024);
 	frame->dma_fd = -1;
 	return frame;
 }
@@ -82,16 +81,32 @@ bool us_frame_compare(const us_frame_s *a, const us_frame_s *b) {
 uint us_frame_get_padding(const us_frame_s *frame) {
 	uint bytes_per_pixel = 0;
 	switch (frame->format) {
+		case V4L2_PIX_FMT_YUV420:
+		case V4L2_PIX_FMT_YVU420:
+		case V4L2_PIX_FMT_GREY:
+			bytes_per_pixel = 1;
+			break;
+
 		case V4L2_PIX_FMT_YUYV:
 		case V4L2_PIX_FMT_YVYU:
 		case V4L2_PIX_FMT_UYVY:
-		case V4L2_PIX_FMT_RGB565: bytes_per_pixel = 2; break;
+		case V4L2_PIX_FMT_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_RGB24:
+			bytes_per_pixel = 3;
+			break;
+
 		// case V4L2_PIX_FMT_H264:
 		case V4L2_PIX_FMT_MJPEG:
-		case V4L2_PIX_FMT_JPEG: bytes_per_pixel = 0; break;
-		default: assert(0 && "Unknown format");
+		case V4L2_PIX_FMT_JPEG:
+			bytes_per_pixel = 0;
+			break;
+
+		default:
+			US_RAISE("Unknown format");
 	}
 	if (bytes_per_pixel > 0 && frame->stride > frame->width) {
 		return (frame->stride - frame->width * bytes_per_pixel);
@@ -104,7 +119,7 @@ bool us_is_jpeg(uint format) {
 }
 
 const char *us_fourcc_to_string(uint format, char *buf, uz size) {
-	assert(size >= 8);
+	US_A(size >= 8);
 	buf[0] = format & 0x7F;
 	buf[1] = (format >> 8) & 0x7F;
 	buf[2] = (format >> 16) & 0x7F;

src/libs/frame.h

@@ -38,7 +38,8 @@
 	bool	key; \
 	uint	gop; \
 	\
-	ldf		grab_ts; \
+	ldf		grab_begin_ts; \
+	ldf		grab_end_ts; \
 	ldf		encode_begin_ts; \
 	ldf		encode_end_ts;
 
@@ -62,7 +63,8 @@ typedef struct {
 		(x_dest)->key = (x_src)->key; \
 		(x_dest)->gop = (x_src)->gop; \
 		\
-		(x_dest)->grab_ts = (x_src)->grab_ts; \
+		(x_dest)->grab_begin_ts = (x_src)->grab_begin_ts; \
+		(x_dest)->grab_end_ts = (x_src)->grab_end_ts; \
 		(x_dest)->encode_begin_ts = (x_src)->encode_begin_ts; \
 		(x_dest)->encode_end_ts = (x_src)->encode_end_ts; \
 	}
@@ -82,7 +84,7 @@ typedef struct {
 
 
 static inline void us_frame_encoding_begin(const us_frame_s *src, us_frame_s *dest, uint format) {
-	assert(src->used > 0);
+	US_A(src->used > 0);
 	US_FRAME_COPY_META(src, dest);
 	dest->encode_begin_ts = us_get_now_monotonic();
 	dest->format = format;
@@ -91,7 +93,7 @@ static inline void us_frame_encoding_begin(const us_frame_s *src, us_frame_s *de
 }
 
 static inline void us_frame_encoding_end(us_frame_s *dest) {
-	assert(dest->used > 0);
+	US_A(dest->used > 0);
 	dest->encode_end_ts = us_get_now_monotonic();
 }
 

src/libs/frametext.c

@@ -34,9 +34,12 @@
 
 
 static void _frametext_draw_line(
-	us_frametext_s *ft, const char *line,
-	uint scale_x, uint scale_y,
-	uint start_x, uint start_y);
+	us_frametext_s *ft,
+	const char *line,
+	uint scale_x,
+	uint scale_y,
+	uint start_x,
+	uint start_y);
 
 
 us_frametext_s *us_frametext_init(void) {
@@ -81,8 +84,8 @@ To access the nth pixel in a row, right-shift by n.
 */
 
 void us_frametext_draw(us_frametext_s *ft, const char *text, uint width, uint height) {
-	assert(width > 0);
-	assert(height > 0);
+	US_A(width > 0);
+	US_A(height > 0);
 
 	us_frame_s *const frame = ft->frame;
 
@@ -121,9 +124,16 @@ void us_frametext_draw(us_frametext_s *ft, const char *text, uint width, uint he
 	if (block_width == 0 || block_height == 0) {
 		goto empty;
 	}
-	uint scale_x = frame->width / block_width / 2;
-	uint scale_y = frame->height / block_height / 3;
-	if (scale_x < scale_y / 1.5) {
+
+	// Ширина текста должна быть от 75%, до половины экрана, в зависимости от длины
+	const float div_x = US_MAX(US_MIN((100 / block_width * 2), 2.0), 1.5);
+
+	// Высоту тоже отрегулировать как-нибудь
+	const float div_y = US_MAX(US_MIN((70 / block_height * 2), 2.0), 1.5);
+
+	uint scale_x = frame->width / block_width / div_x;
+	uint scale_y = frame->height / block_height / div_y;
+	if (scale_x < scale_y / 1.5) { // Keep proportions
 		scale_y = scale_x * 1.5;
 	} else if (scale_y < scale_x * 1.5) {
 		scale_x = scale_y / 1.5;
@@ -149,10 +159,13 @@ empty:
 }
 
 void _frametext_draw_line(
-	us_frametext_s *ft, const char *line,
-	uint scale_x, uint scale_y,
-	uint start_x, uint start_y) {
-
+	us_frametext_s *ft,
+	const char *line,
+	uint scale_x,
+	uint scale_y,
+	uint start_x,
+	uint start_y
+) {
 	us_frame_s *const frame = ft->frame;
 
 	const size_t len = strlen(line);

src/libs/list.h

@@ -22,7 +22,7 @@
 
 #pragma once
 
-#include <assert.h>
+#include "tools.h"
 
 
 #define US_LIST_DECLARE \
@@ -71,6 +71,6 @@
 
 #define US_LIST_REMOVE_C(x_first, x_item, x_count) { \
 		US_LIST_REMOVE(x_first, x_item); \
-		assert((x_count) >= 1); \
+		US_A((x_count) >= 1); \
 		--(x_count); \
 	}

src/libs/logging.h

@@ -28,7 +28,6 @@
 #include <unistd.h>
 #include <errno.h>
 #include <time.h>
-#include <assert.h>
 
 #include <pthread.h>
 
@@ -75,7 +74,7 @@ extern pthread_mutex_t us_g_log_mutex;
 
 #define US_SEP_INFO(x_ch) { \
 		US_LOGGING_LOCK; \
-		for (int m_count = 0; m_count < 80; ++m_count) { \
+		for (int m_i = 0; m_i < 80; ++m_i) { \
 			fputc((x_ch), stderr); \
 		} \
 		fputc('\n', stderr); \

src/libs/memsink.c

@@ -26,7 +26,6 @@
 #include <string.h>
 #include <fcntl.h>
 #include <errno.h>
-#include <assert.h>
 
 #include <sys/file.h>
 #include <sys/stat.h>
@@ -110,7 +109,7 @@ bool us_memsink_server_check(us_memsink_s *sink, const us_frame_s *frame) {
 	// Если frame == NULL, то только проверяем наличие клиентов
 	// или необходимость инициализировать память.
 
-	assert(sink->server);
+	US_A(sink->server);
 
 	if (sink->mem->magic != US_MEMSINK_MAGIC || sink->mem->version != US_MEMSINK_VERSION) {
 		// Если регион памяти не был инициализирован, то нужно что-то туда положить.
@@ -162,7 +161,7 @@ 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 *key_requested) {
-	assert(sink->server);
+	US_A(sink->server);
 
 	const ldf now = us_get_now_monotonic();
 
@@ -210,7 +209,7 @@ int us_memsink_server_put(us_memsink_s *sink, const us_frame_s *frame, bool *key
 }
 
 int us_memsink_client_get(us_memsink_s *sink, us_frame_s *frame, bool *key_requested, bool key_required) {
-	assert(!sink->server); // Client only
+	US_A(!sink->server); // Client only
 
 	if (us_flock_timedwait_monotonic(sink->fd, sink->timeout) < 0) {
 		if (errno == EWOULDBLOCK) {

src/libs/memsinksh.c

@@ -24,11 +24,11 @@
 
 #include <string.h>
 #include <strings.h>
-#include <assert.h>
 
 #include <sys/mman.h>
 
 #include "types.h"
+#include "tools.h"
 
 
 us_memsink_shared_s *us_memsink_shared_map(int fd, uz data_size) {
@@ -40,12 +40,12 @@ us_memsink_shared_s *us_memsink_shared_map(int fd, uz data_size) {
 	if (mem == MAP_FAILED) {
 		return NULL;
 	}
-	assert(mem != NULL);
+	US_A(mem != NULL);
 	return mem;
 }
 
 int us_memsink_shared_unmap(us_memsink_shared_s *mem, uz data_size) {
-	assert(mem != NULL);
+	US_A(mem != NULL);
 	return munmap(mem, sizeof(us_memsink_shared_s) + data_size);
 }
 

src/libs/options.c

@@ -25,21 +25,21 @@
 #include <string.h>
 #include <ctype.h>
 #include <getopt.h>
-#include <assert.h>
 
 #include "types.h"
+#include "tools.h"
 
 
 void us_build_short_options(const struct option opts[], char *short_opts, uz size) {
 	memset(short_opts, 0, size);
-    for (uint short_index = 0, opt_index = 0; opts[opt_index].name != NULL; ++opt_index) {
-		assert(short_index < size - 3);
-        if (isalpha(opts[opt_index].val)) {
-            short_opts[short_index] = opts[opt_index].val;
-            ++short_index;
-            if (opts[opt_index].has_arg == required_argument) {
-                short_opts[short_index] = ':';
-                ++short_index;
+    for (uint short_i = 0, opt_i = 0; opts[opt_i].name != NULL; ++opt_i) {
+		US_A(short_i < size - 3);
+        if (isalpha(opts[opt_i].val)) {
+            short_opts[short_i] = opts[opt_i].val;
+            ++short_i;
+            if (opts[opt_i].has_arg == required_argument) {
+                short_opts[short_i] = ':';
+                ++short_i;
             }
         }
     }

src/libs/process.h

@@ -25,14 +25,8 @@
 #include <signal.h>
 #include <unistd.h>
 
-
-#if defined(__linux__)
-#	define HAS_PDEATHSIG
-#elif defined(__FreeBSD__)
+#if defined(__FreeBSD__)
 #	include <sys/param.h>
-#	if __FreeBSD_version >= 1102000
-#		define HAS_PDEATHSIG
-#	endif
 #endif
 
 
@@ -49,20 +43,22 @@
 #		error setproctitle() not implemented, you can disable it using WITH_SETPROCTITLE=0
 #	endif
 #endif
-#ifdef HAS_PDEATHSIG
+
+#ifdef WITH_PDEATHSIG
 #	if defined(__linux__)
 #		include <sys/prctl.h>
-#	elif defined(__FreeBSD__)
+#	elif defined(__FreeBSD__) && (__FreeBSD_version >= 1102000)
 #		include <sys/procctl.h>
+#	else
+#		error WITH_PDEATHSIG is not supported on your system
 #	endif
 #endif
+
 #include "types.h"
 #ifdef WITH_SETPROCTITLE
 #	include "tools.h"
 #endif
-#ifdef HAS_PDEATHSIG
-#	include "logging.h"
-#endif
+#include "logging.h"
 
 
 #ifdef WITH_SETPROCTITLE
@@ -70,18 +66,18 @@ extern char **environ;
 #endif
 
 
-#ifdef HAS_PDEATHSIG
+#ifdef WITH_PDEATHSIG
 INLINE int us_process_track_parent_death(void) {
 	const pid_t parent = getppid();
 	int signum = SIGTERM;
 #	if defined(__linux__)
-	const int retval = prctl(PR_SET_PDEATHSIG, signum);
+	const int result = prctl(PR_SET_PDEATHSIG, signum);
 #	elif defined(__FreeBSD__)
-	const int retval = procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum);
+	const int result = procctl(P_PID, 0, PROC_PDEATHSIG_CTL, &signum);
 #	else
 #		error WTF?
 #	endif
-	if (retval < 0) {
+	if (result < 0) {
 		US_LOG_PERROR("Can't set to receive SIGTERM on parent process death");
 		return -1;
 	}
@@ -107,15 +103,15 @@ INLINE void us_process_set_name_prefix(int argc, char *argv[], const char *prefi
 	US_REALLOC(cmdline, allocated);
 	cmdline[0] = '\0';
 
-	for (int index = 0; index < argc; ++index) {
-		uz arg_len = strlen(argv[index]);
+	for (int i = 0; i < argc; ++i) {
+		uz arg_len = strlen(argv[i]);
 		if (used + arg_len + 16 >= allocated) {
 			allocated += arg_len + 2048;
 			US_REALLOC(cmdline, allocated); // cppcheck-suppress memleakOnRealloc // False-positive (ok with assert)
 		}
 
 		strcat(cmdline, " ");
-		strcat(cmdline, argv[index]);
+		strcat(cmdline, argv[i]);
 		used = strlen(cmdline); // Не считаем вручную, так надежнее
 	}
 

src/libs/queue.c

@@ -24,7 +24,6 @@
 
 #include <errno.h>
 #include <time.h>
-#include <assert.h>
 
 #include <pthread.h>
 
@@ -34,79 +33,79 @@
 
 
 us_queue_s *us_queue_init(uint capacity) {
-	us_queue_s *queue;
-	US_CALLOC(queue, 1);
-	US_CALLOC(queue->items, capacity);
-	queue->capacity = capacity;
-	US_MUTEX_INIT(queue->mutex);
+	us_queue_s *q;
+	US_CALLOC(q, 1);
+	US_CALLOC(q->items, capacity);
+	q->capacity = capacity;
+	US_MUTEX_INIT(q->mutex);
 
 	pthread_condattr_t attrs;
-	assert(!pthread_condattr_init(&attrs));
-	assert(!pthread_condattr_setclock(&attrs, CLOCK_MONOTONIC));
-	assert(!pthread_cond_init(&queue->full_cond, &attrs));
-	assert(!pthread_cond_init(&queue->empty_cond, &attrs));
-	assert(!pthread_condattr_destroy(&attrs));
-	return queue;
+	US_A(!pthread_condattr_init(&attrs));
+	US_A(!pthread_condattr_setclock(&attrs, CLOCK_MONOTONIC));
+	US_A(!pthread_cond_init(&q->full_cond, &attrs));
+	US_A(!pthread_cond_init(&q->empty_cond, &attrs));
+	US_A(!pthread_condattr_destroy(&attrs));
+	return q;
 }
 
-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);
+void us_queue_destroy(us_queue_s *q) {
+	US_COND_DESTROY(q->empty_cond);
+	US_COND_DESTROY(q->full_cond);
+	US_MUTEX_DESTROY(q->mutex);
+	free(q->items);
+	free(q);
 }
 
 #define _WAIT_OR_UNLOCK(x_var, x_cond) { \
 		struct timespec m_ts; \
-		assert(!clock_gettime(CLOCK_MONOTONIC, &m_ts)); \
+		US_A(!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); \
+			const int err = pthread_cond_timedwait(&(x_cond), &q->mutex, &m_ts); \
 			if (err == ETIMEDOUT) { \
-				US_MUTEX_UNLOCK(queue->mutex); \
+				US_MUTEX_UNLOCK(q->mutex); \
 				return -1; \
 			} \
-			assert(!err); \
+			US_A(!err); \
 		} \
 	}
 
-int us_queue_put(us_queue_s *queue, void *item, ldf timeout) {
-	US_MUTEX_LOCK(queue->mutex);
+int us_queue_put(us_queue_s *q, void *item, ldf timeout) {
+	US_MUTEX_LOCK(q->mutex);
 	if (timeout == 0) {
-		if (queue->size == queue->capacity) {
-			US_MUTEX_UNLOCK(queue->mutex);
+		if (q->size == q->capacity) {
+			US_MUTEX_UNLOCK(q->mutex);
 			return -1;
 		}
 	} else {
-		_WAIT_OR_UNLOCK(queue->size == queue->capacity, queue->full_cond);
+		_WAIT_OR_UNLOCK(q->size == q->capacity, q->full_cond);
 	}
-	queue->items[queue->in] = item;
-	++queue->size;
-	++queue->in;
-	queue->in %= queue->capacity;
-	US_MUTEX_UNLOCK(queue->mutex);
-	US_COND_BROADCAST(queue->empty_cond);
+	q->items[q->in] = item;
+	++q->size;
+	++q->in;
+	q->in %= q->capacity;
+	US_MUTEX_UNLOCK(q->mutex);
+	US_COND_BROADCAST(q->empty_cond);
 	return 0;
 }
 
-int us_queue_get(us_queue_s *queue, void **item, ldf timeout) {
-	US_MUTEX_LOCK(queue->mutex);
-	_WAIT_OR_UNLOCK(queue->size == 0, queue->empty_cond);
-	*item = queue->items[queue->out];
-	--queue->size;
-	++queue->out;
-	queue->out %= queue->capacity;
-	US_MUTEX_UNLOCK(queue->mutex);
-	US_COND_BROADCAST(queue->full_cond);
+int us_queue_get(us_queue_s *q, void **item, ldf timeout) {
+	US_MUTEX_LOCK(q->mutex);
+	_WAIT_OR_UNLOCK(q->size == 0, q->empty_cond);
+	*item = q->items[q->out];
+	--q->size;
+	++q->out;
+	q->out %= q->capacity;
+	US_MUTEX_UNLOCK(q->mutex);
+	US_COND_BROADCAST(q->full_cond);
 	return 0;
 }
 
 #undef _WAIT_OR_UNLOCK
 
-bool us_queue_is_empty(us_queue_s *queue) {
-	US_MUTEX_LOCK(queue->mutex);
-	const uint size = queue->size;
-	US_MUTEX_UNLOCK(queue->mutex);
-	return (bool)(queue->capacity - size);
+bool us_queue_is_empty(us_queue_s *q) {
+	US_MUTEX_LOCK(q->mutex);
+	const uint size = q->size;
+	US_MUTEX_UNLOCK(q->mutex);
+	return (bool)(q->capacity - size);
 }

src/libs/queue.h

@@ -43,22 +43,22 @@ typedef struct {
 } us_queue_s;
 
 
-#define US_QUEUE_DELETE_WITH_ITEMS(x_queue, x_free_item) { \
-		if (x_queue) { \
-			while (!us_queue_is_empty(x_queue)) { \
+#define US_QUEUE_DELETE_WITH_ITEMS(x_q, x_free_item) { \
+		if (x_q) { \
+			while (!us_queue_is_empty(x_q)) { \
 				void *m_ptr; \
-				if (!us_queue_get(x_queue, &m_ptr, 0)) { \
+				if (!us_queue_get(x_q, &m_ptr, 0)) { \
 					US_DELETE(m_ptr, x_free_item); \
 				} \
 			} \
-			us_queue_destroy(x_queue); \
+			us_queue_destroy(x_q); \
 		} \
 	}
 
 
 us_queue_s *us_queue_init(uint capacity);
-void us_queue_destroy(us_queue_s *queue);
+void us_queue_destroy(us_queue_s *q);
 
-int us_queue_put(us_queue_s *queue, void *item, ldf timeout);
-int us_queue_get(us_queue_s *queue, void **item, ldf timeout);
-bool us_queue_is_empty(us_queue_s *queue);
+int us_queue_put(us_queue_s *q, void *item, ldf timeout);
+int us_queue_get(us_queue_s *q, void **item, ldf timeout);
+bool us_queue_is_empty(us_queue_s *q);

src/libs/ring.c

@@ -20,8 +20,6 @@
 *****************************************************************************/
 
 
-#include <assert.h>
-
 #include "ring.h"
 
 #include "types.h"
@@ -29,8 +27,8 @@
 #include "queue.h"
 
 
-int _acquire(us_ring_s *ring, us_queue_s *queue, ldf timeout);
-void _release(us_ring_s *ring, us_queue_s *queue, uint index);
+int _acquire(us_ring_s *ring, us_queue_s *q, ldf timeout);
+void _release(us_ring_s *ring, us_queue_s *q, uint ri);
 
 
 us_ring_s *us_ring_init(uint capacity) {
@@ -41,9 +39,9 @@ us_ring_s *us_ring_init(uint capacity) {
 	ring->capacity = capacity;
 	ring->producer = us_queue_init(capacity);
 	ring->consumer = us_queue_init(capacity);
-	for (uint index = 0; index < capacity; ++index) {
-		ring->places[index] = index; // XXX: Just to avoid casting between pointer and uint
-		assert(!us_queue_put(ring->producer, (void*)(ring->places + index), 0));
+	for (uint ri = 0; ri < capacity; ++ri) {
+		ring->places[ri] = ri; // XXX: Just to avoid casting between pointer and uint
+		US_A(!us_queue_put(ring->producer, (void*)(ring->places + ri), 0));
 	}
 	return ring;
 }
@@ -60,27 +58,27 @@ int us_ring_producer_acquire(us_ring_s *ring, ldf timeout) {
 	return _acquire(ring, ring->producer, timeout);
 }
 
-void us_ring_producer_release(us_ring_s *ring, uint index) {
-	_release(ring, ring->consumer, index);
+void us_ring_producer_release(us_ring_s *ring, uint ri) {
+	_release(ring, ring->consumer, ri);
 }
 
 int us_ring_consumer_acquire(us_ring_s *ring, ldf timeout) {
 	return _acquire(ring, ring->consumer, timeout);
 }
 
-void us_ring_consumer_release(us_ring_s *ring, uint index) {
-	_release(ring, ring->producer, index);
+void us_ring_consumer_release(us_ring_s *ring, uint ri) {
+	_release(ring, ring->producer, ri);
 }
 
-int _acquire(us_ring_s *ring, us_queue_s *queue, ldf timeout) {
+int _acquire(us_ring_s *ring, us_queue_s *q, ldf timeout) {
 	(void)ring;
 	uint *place;
-	if (us_queue_get(queue, (void**)&place, timeout) < 0) {
+	if (us_queue_get(q, (void**)&place, timeout) < 0) {
 		return -1;
 	}
 	return *place;
 }
 
-void _release(us_ring_s *ring, us_queue_s *queue, uint index) {
-	assert(!us_queue_put(queue, (void*)(ring->places + index), 0));
+void _release(us_ring_s *ring, us_queue_s *q, uint ri) {
+	US_A(!us_queue_put(q, (void*)(ring->places + ri), 0));
 }

src/libs/ring.h

@@ -38,15 +38,15 @@ typedef struct {
 
 #define US_RING_INIT_WITH_ITEMS(x_ring, x_capacity, x_init_item) { \
 		(x_ring) = us_ring_init(x_capacity); \
-		for (uz m_index = 0; m_index < (x_ring)->capacity; ++m_index) { \
-			(x_ring)->items[m_index] = x_init_item(); \
+		for (uz m_ri = 0; m_ri < (x_ring)->capacity; ++m_ri) { \
+			(x_ring)->items[m_ri] = x_init_item(); \
 		} \
 	}
 
 #define US_RING_DELETE_WITH_ITEMS(x_ring, x_destroy_item) { \
 		if (x_ring) { \
-			for (uz m_index = 0; m_index < (x_ring)->capacity; ++m_index) { \
-				x_destroy_item((x_ring)->items[m_index]); \
+			for (uz m_ri = 0; m_ri < (x_ring)->capacity; ++m_ri) { \
+				x_destroy_item((x_ring)->items[m_ri]); \
 			} \
 			us_ring_destroy(x_ring); \
 		} \
@@ -57,7 +57,7 @@ us_ring_s *us_ring_init(uint capacity);
 void us_ring_destroy(us_ring_s *ring);
 
 int us_ring_producer_acquire(us_ring_s *ring, ldf timeout);
-void us_ring_producer_release(us_ring_s *ring, uint index);
+void us_ring_producer_release(us_ring_s *ring, uint ri);
 
 int us_ring_consumer_acquire(us_ring_s *ring, ldf timeout);
-void us_ring_consumer_release(us_ring_s *ring, uint index);
+void us_ring_consumer_release(us_ring_s *ring, uint ri);

src/libs/signal.c

@@ -24,7 +24,6 @@
 
 #include <string.h>
 #include <signal.h>
-#include <assert.h>
 
 #if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 32
 #	define HAS_SIGABBREV_NP
@@ -58,25 +57,25 @@ char *us_signum_to_string(int signum) {
 void us_install_signals_handler(us_signal_handler_f handler, bool ignore_sigpipe) {
 	struct sigaction sig_act = {0};
 
-	assert(!sigemptyset(&sig_act.sa_mask));
+	US_A(!sigemptyset(&sig_act.sa_mask));
 	sig_act.sa_handler = handler;
-	assert(!sigaddset(&sig_act.sa_mask, SIGINT));
-	assert(!sigaddset(&sig_act.sa_mask, SIGTERM));
+	US_A(!sigaddset(&sig_act.sa_mask, SIGINT));
+	US_A(!sigaddset(&sig_act.sa_mask, SIGTERM));
 	if (!ignore_sigpipe) {
-	    assert(!sigaddset(&sig_act.sa_mask, SIGPIPE));
+	    US_A(!sigaddset(&sig_act.sa_mask, SIGPIPE));
 	}
 
 	US_LOG_DEBUG("Installing SIGINT handler ...");
-	assert(!sigaction(SIGINT, &sig_act, NULL));
+	US_A(!sigaction(SIGINT, &sig_act, NULL));
 
 	US_LOG_DEBUG("Installing SIGTERM handler ...");
-	assert(!sigaction(SIGTERM, &sig_act, NULL));
+	US_A(!sigaction(SIGTERM, &sig_act, NULL));
 
 	if (!ignore_sigpipe) {
 		US_LOG_DEBUG("Installing SIGPIPE handler ...");
-		assert(!sigaction(SIGPIPE, &sig_act, NULL));
+		US_A(!sigaction(SIGPIPE, &sig_act, NULL));
 	} else {
 		US_LOG_DEBUG("Ignoring SIGPIPE ...");
-		assert(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
+		US_A(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
 	}
 }

src/libs/tc358743.c

@@ -33,17 +33,6 @@
 #include "xioctl.h"
 
 
-#ifndef V4L2_CID_USER_TC358743_BASE
-#	define V4L2_CID_USER_TC358743_BASE (V4L2_CID_USER_BASE + 0x1080)
-#endif
-#ifndef TC358743_CID_AUDIO_PRESENT
-#	define TC358743_CID_AUDIO_PRESENT (V4L2_CID_USER_TC358743_BASE + 1)
-#endif
-#ifndef TC358743_CID_AUDIO_SAMPLING_RATE
-#	define TC358743_CID_AUDIO_SAMPLING_RATE (V4L2_CID_USER_TC358743_BASE + 0)
-#endif
-
-
 int us_tc358743_xioctl_get_audio_hz(int fd, uint *audio_hz) {
 	*audio_hz = 0;
 

src/libs/tc358743.h

@@ -22,7 +22,26 @@
 
 #pragma once
 
+#include <linux/v4l2-controls.h>
+
 #include "types.h"
 
 
+#ifndef V4L2_CID_USER_TC358743_BASE
+#	define V4L2_CID_USER_TC358743_BASE (V4L2_CID_USER_BASE + 0x1080)
+#endif
+
+#ifndef TC358743_CID_AUDIO_SAMPLING_RATE
+#	define TC358743_CID_AUDIO_SAMPLING_RATE (V4L2_CID_USER_TC358743_BASE + 0)
+#endif
+
+#ifndef TC358743_CID_AUDIO_PRESENT
+#	define TC358743_CID_AUDIO_PRESENT (V4L2_CID_USER_TC358743_BASE + 1)
+#endif
+
+#ifndef TC358743_CID_LANES_ENOUGH
+#	define TC358743_CID_LANES_ENOUGH (V4L2_CID_USER_TC358743_BASE + 2)
+#endif
+
+
 int us_tc358743_xioctl_get_audio_hz(int fd, uint *audio_hz);

src/libs/threading.h

@@ -25,7 +25,6 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <signal.h>
-#include <assert.h>
 
 #include <sys/syscall.h>
 
@@ -47,8 +46,8 @@
 #	define US_THREAD_NAME_SIZE ((uz)16)
 #endif
 
-#define US_THREAD_CREATE(x_tid, x_func, x_arg)	assert(!pthread_create(&(x_tid), NULL, (x_func), (x_arg)))
-#define US_THREAD_JOIN(x_tid)					assert(!pthread_join((x_tid), NULL))
+#define US_THREAD_CREATE(x_tid, x_func, x_arg)	US_A(!pthread_create(&(x_tid), NULL, (x_func), (x_arg)))
+#define US_THREAD_JOIN(x_tid)					US_A(!pthread_join((x_tid), NULL))
 
 #ifdef WITH_PTHREAD_NP
 #	define US_THREAD_RENAME(x_fmt, ...) { \
@@ -65,16 +64,16 @@
 		us_thread_block_signals(); \
 	}
 
-#define US_MUTEX_INIT(x_mutex)		assert(!pthread_mutex_init(&(x_mutex), NULL))
-#define US_MUTEX_DESTROY(x_mutex)	assert(!pthread_mutex_destroy(&(x_mutex)))
-#define US_MUTEX_LOCK(x_mutex)		assert(!pthread_mutex_lock(&(x_mutex)))
-#define US_MUTEX_UNLOCK(x_mutex)	assert(!pthread_mutex_unlock(&(x_mutex)))
+#define US_MUTEX_INIT(x_mutex)		US_A(!pthread_mutex_init(&(x_mutex), NULL))
+#define US_MUTEX_DESTROY(x_mutex)	US_A(!pthread_mutex_destroy(&(x_mutex)))
+#define US_MUTEX_LOCK(x_mutex)		US_A(!pthread_mutex_lock(&(x_mutex)))
+#define US_MUTEX_UNLOCK(x_mutex)	US_A(!pthread_mutex_unlock(&(x_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))); }
+#define US_COND_INIT(x_cond)		US_A(!pthread_cond_init(&(x_cond), NULL))
+#define US_COND_DESTROY(x_cond)		US_A(!pthread_cond_destroy(&(x_cond)))
+#define US_COND_SIGNAL(x_cond)		US_A(!pthread_cond_signal(&(x_cond)))
+#define US_COND_BROADCAST(x_cond)	US_A(!pthread_cond_broadcast(&(x_cond)))
+#define US_COND_WAIT_FOR(x_var, x_cond, x_mutex) { while(!(x_var)) US_A(!pthread_cond_wait(&(x_cond), &(x_mutex))); }
 
 
 #ifdef WITH_PTHREAD_NP
@@ -114,7 +113,7 @@ INLINE void us_thread_get_name(char *name) { // Always required for logging
 		const pid_t tid = syscall(SYS_gettid);
 #elif defined(__FreeBSD__)
 		long id;
-		assert(!syscall(SYS_thr_self, &id));
+		US_A(!syscall(SYS_thr_self, &id));
 		const pid_t tid = id;
 #elif defined(__OpenBSD__)
 		const pid_t tid = syscall(SYS_getthrid);
@@ -135,8 +134,8 @@ INLINE void us_thread_get_name(char *name) { // Always required for logging
 
 INLINE void us_thread_block_signals(void) {
 	sigset_t mask;
-	assert(!sigemptyset(&mask));
-	assert(!sigaddset(&mask, SIGINT));
-	assert(!sigaddset(&mask, SIGTERM));
-	assert(!pthread_sigmask(SIG_BLOCK, &mask, NULL));
+	US_A(!sigemptyset(&mask));
+	US_A(!sigaddset(&mask, SIGINT));
+	US_A(!sigaddset(&mask, SIGTERM));
+	US_A(!pthread_sigmask(SIG_BLOCK, &mask, NULL));
 }

src/libs/tools.h

@@ -51,14 +51,17 @@
 
 #define INLINE inline __attribute__((always_inline))
 
-#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_A(x_arg)		{ const bool m_ar = (x_arg); assert(m_ar && #x_arg); }
+#define US_RAISE(x_msg)	assert(0 && x_msg)
+
+#define US_CALLOC(x_dest, x_nmemb)		US_A(((x_dest) = calloc((x_nmemb), sizeof(*(x_dest)))) != NULL)
+#define US_REALLOC(x_dest, x_nmemb)		US_A(((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); x_dest = NULL; } }
 #define US_CLOSE_FD(x_dest)				{ if (x_dest >= 0) { close(x_dest); x_dest = -1; } }
 #define US_MEMSET_ZERO(x_obj)			memset(&(x_obj), 0, sizeof(x_obj))
 
-#define US_SNPRINTF(x_dest, x_size, x_fmt, ...)	assert(snprintf((x_dest), (x_size), (x_fmt), ##__VA_ARGS__) > 0)
-#define US_ASPRINTF(x_dest, x_fmt, ...)			assert(asprintf(&(x_dest), (x_fmt), ##__VA_ARGS__) > 0)
+#define US_SNPRINTF(x_dest, x_size, x_fmt, ...)	US_A(snprintf((x_dest), (x_size), (x_fmt), ##__VA_ARGS__) > 0)
+#define US_ASPRINTF(x_dest, x_fmt, ...)			US_A(asprintf(&(x_dest), (x_fmt), ##__VA_ARGS__) > 0)
 
 #define US_MIN(x_a, x_b) ({ \
 		__typeof__(x_a) m_a = (x_a); \
@@ -85,7 +88,7 @@
 
 INLINE char *us_strdup(const char *str) {
 	char *const new = strdup(str);
-	assert(new != NULL);
+	US_A(new != NULL);
 	return new;
 }
 
@@ -115,7 +118,7 @@ INLINE u32 us_triple_u32(u32 x) {
 
 INLINE void us_get_now(clockid_t clk_id, time_t *sec, long *msec) {
 	struct timespec ts;
-	assert(!clock_gettime(clk_id, &ts));
+	US_A(!clock_gettime(clk_id, &ts));
 	*sec = ts.tv_sec;
 	*msec = round(ts.tv_nsec / 1.0e6);
 
@@ -134,7 +137,7 @@ INLINE ldf us_get_now_monotonic(void) {
 
 INLINE u64 us_get_now_monotonic_u64(void) {
 	struct timespec ts;
-	assert(!clock_gettime(CLOCK_MONOTONIC, &ts));
+	US_A(!clock_gettime(CLOCK_MONOTONIC, &ts));
 	return (u64)(ts.tv_nsec / 1000) + (u64)ts.tv_sec * 1000000;
 }
 
@@ -150,12 +153,6 @@ INLINE ldf us_get_now_real(void) {
 	return (ldf)sec + ((ldf)msec) / 1000;
 }
 
-INLINE uint us_get_cores_available(void) {
-	long cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
-	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
-	return US_MAX(US_MIN(cores_sysconf, 4), 1);
-}
-
 INLINE void us_ld_to_timespec(ldf ld, struct timespec *ts) {
 	ts->tv_sec = (long)ld;
 	ts->tv_nsec = (ld - ts->tv_sec) * 1000000000L;
@@ -169,6 +166,28 @@ INLINE ldf us_timespec_to_ld(const struct timespec *ts) {
 	return ts->tv_sec + ((ldf)ts->tv_nsec) / 1000000000;
 }
 
+#define NTP_UNIX_TIME_DIFF	2208988800u // Difference between Unix time and NTP time in seconds (1970 - 1900)
+#define NTP_TICKS_IN_SECOND	4294967296u // Ticks per second in NTP time
+
+INLINE u64 us_get_now_ntp(void) {
+	struct timespec ts;
+	US_A(!clock_gettime(CLOCK_REALTIME, &ts));
+	return (((u64)ts.tv_sec + NTP_UNIX_TIME_DIFF) << 32) + ((u64)ts.tv_nsec / 1000 * NTP_TICKS_IN_SECOND) / 1000000;
+}
+
+INLINE u64 us_ld_to_ntp(ldf ld) {
+	return (ld > 0 ? ld * NTP_TICKS_IN_SECOND : 0);
+}
+
+#undef NTP_TICKS_IN_SECOND
+#undef NTP_UNIX_TIME_DIFF
+
+INLINE uint us_get_cores_available(void) {
+	long cores_sysconf = sysconf(_SC_NPROCESSORS_ONLN);
+	cores_sysconf = (cores_sysconf < 0 ? 0 : cores_sysconf);
+	return US_MAX(US_MIN(cores_sysconf, 4), 1);
+}
+
 INLINE int us_flock_timedwait_monotonic(int fd, ldf timeout) {
 	const ldf deadline_ts = us_get_now_monotonic() + timeout;
 	int retval = -1;

src/libs/unjpeg.c

@@ -24,12 +24,12 @@
 
 #include <stdio.h>
 #include <setjmp.h>
-#include <assert.h>
 
 #include <jpeglib.h>
 #include <linux/videodev2.h>
 
 #include "types.h"
+#include "tools.h"
 #include "logging.h"
 #include "frame.h"
 
@@ -45,7 +45,7 @@ static void _jpeg_error_handler(j_common_ptr jpeg);
 
 
 int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode) {
-	assert(us_is_jpeg(src->format));
+	US_A(us_is_jpeg(src->format));
 
 	volatile int retval = 0;
 
@@ -77,7 +77,7 @@ int us_unjpeg(const us_frame_s *src, us_frame_s *dest, bool decode) {
 
 	if (decode) {
 		JSAMPARRAY scanlines;
-		scanlines = (*jpeg.mem->alloc_sarray)((j_common_ptr) &jpeg, JPOOL_IMAGE, dest->stride, 1);
+		scanlines = (*jpeg.mem->alloc_sarray)((j_common_ptr)&jpeg, JPOOL_IMAGE, dest->stride, 1);
 
 		us_frame_realloc_data(dest, ((dest->width * dest->height) << 1) * 2);
 		while (jpeg.output_scanline < jpeg.output_height) {

src/ustreamer/blank.c

@@ -36,7 +36,7 @@ us_blank_s *us_blank_init(void) {
 	blank->ft = us_frametext_init();
 	blank->raw = blank->ft->frame;
 	blank->jpeg = us_frame_init();
-	us_blank_draw(blank, "< NO SIGNAL >", 640, 480);
+	us_blank_draw(blank, "< NO LIVE VIDEO >", 640, 480);
 	return blank;
 }
 

src/ustreamer/encoder.c

@@ -24,7 +24,6 @@
 
 #include <stdlib.h>
 #include <strings.h>
-#include <assert.h>
 
 #include <pthread.h>
 
@@ -81,8 +80,8 @@ us_encoder_s *us_encoder_init(void) {
 void us_encoder_destroy(us_encoder_s *enc) {
 	us_encoder_runtime_s *const run = enc->run;
 	if (run->m2ms != NULL) {
-		for (uint index = 0; index < run->n_m2ms; ++index) {
-			US_DELETE(run->m2ms[index], us_m2m_encoder_destroy);
+		for (uint i = 0; i < run->n_m2ms; ++i) {
+			US_DELETE(run->m2ms[i], us_m2m_encoder_destroy);
 		}
 		free(run->m2ms);
 	}
@@ -113,7 +112,7 @@ void us_encoder_open(us_encoder_s *enc, us_capture_s *cap) {
 	us_encoder_runtime_s *const run = enc->run;
 	us_capture_runtime_s *const cr = cap->run;
 
-	assert(run->pool == NULL);
+	US_A(run->pool == NULL);
 
 	us_encoder_type_e type = enc->type;
 	uint quality = cap->jpeg_quality;
@@ -131,14 +130,17 @@ void us_encoder_open(us_encoder_s *enc, us_capture_s *cap) {
 		} else {
 			US_LOG_INFO("Switching to CPU encoder: the input format is not (M)JPEG ...");
 			type = US_ENCODER_TYPE_CPU;
-			quality = cap->jpeg_quality;
+			quality = cap->jpeg_quality; // cppcheck-suppress redundantAssignment
 		}
 
 	} 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"));
+		US_LOG_DEBUG("Preparing M2M-%s encoder ...",
+			(type == US_ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"));
+
 		if (run->m2ms == NULL) {
 			US_CALLOC(run->m2ms, n_workers);
 		}
+
 		for (; run->n_m2ms < n_workers; ++run->n_m2ms) {
 			// Начинаем с нуля и доинициализируем на следующих заходах при необходимости
 			char name[32];
@@ -162,21 +164,18 @@ void us_encoder_open(us_encoder_s *enc, us_capture_s *cap) {
 	run->quality = quality;
 	US_MUTEX_UNLOCK(run->mutex);
 
-	const ldf desired_interval = (
-		cap->desired_fps > 0 && (cap->desired_fps < cap->run->hw_fps || cap->run->hw_fps == 0)
-		? (ldf)1 / cap->desired_fps
-		: 0
-	);
-
 	enc->run->pool = us_workers_pool_init(
-		"JPEG", "jw", n_workers, desired_interval,
-		_worker_job_init, (void*)enc,
+		"JPEG",
+		"jw",
+		n_workers,
+		_worker_job_init,
+		(void*)enc,
 		_worker_job_destroy,
 		_worker_run_job);
 }
 
 void us_encoder_close(us_encoder_s *enc) {
-	assert(enc->run->pool != NULL);
+	US_A(enc->run->pool != NULL);
 	US_DELETE(enc->run->pool, us_workers_pool_destroy);
 }
 
@@ -207,36 +206,35 @@ static bool _worker_run_job(us_worker_s *wr) {
 	us_encoder_runtime_s *const run = job->enc->run;
 	const us_frame_s *const src = &job->hw->raw;
 	us_frame_s *const dest = job->dest;
+	const uint i = job->hw->buf.index;
 
 	if (run->type == US_ENCODER_TYPE_CPU) {
-		US_LOG_VERBOSE("Compressing JPEG using CPU: worker=%s, buffer=%u",
-			wr->name, job->hw->buf.index);
+		US_LOG_VERBOSE("Compressing JPEG using CPU: worker=%s, buffer=%u", wr->name, i);
 		us_cpu_encoder_compress(src, dest, run->quality);
 
 	} else if (run->type == US_ENCODER_TYPE_HW) {
-		US_LOG_VERBOSE("Compressing JPEG using HW (just copying): worker=%s, buffer=%u",
-			wr->name, job->hw->buf.index);
+		US_LOG_VERBOSE("Compressing JPEG using HW (just copying): worker=%s, buffer=%u", wr->name, i);
 		us_hw_encoder_compress(src, dest);
 
 	} else if (run->type == US_ENCODER_TYPE_M2M_VIDEO || run->type == US_ENCODER_TYPE_M2M_IMAGE) {
 		US_LOG_VERBOSE("Compressing JPEG using M2M-%s: worker=%s, buffer=%u",
-			(run->type == US_ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"), wr->name, job->hw->buf.index);
+			(run->type == US_ENCODER_TYPE_M2M_VIDEO ? "VIDEO" : "IMAGE"),
+			wr->name, i);
 		if (us_m2m_encoder_compress(run->m2ms[wr->number], src, dest, false) < 0) {
 			goto error;
 		}
 
 	} else {
-		assert(0 && "Unknown encoder type");
+		US_RAISE("Unknown encoder type");
 	}
 
 	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,
-		job->hw->buf.index);
+		wr->name, i);
 	return true;
 
 error:
-	US_LOG_ERROR("Compression failed: worker=%s, buffer=%u", wr->name, job->hw->buf.index);
+	US_LOG_ERROR("Compression failed: worker=%s, buffer=%u", wr->name, i);
 	return false;
 }

src/ustreamer/encoders/cpu/encoder.c

@@ -27,6 +27,18 @@
 
 #include "encoder.h"
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <jpeglib.h>
+
+#include <linux/videodev2.h>
+
+#include "../../../libs/types.h"
+#include "../../../libs/tools.h"
+#include "../../../libs/frame.h"
+
 
 typedef struct {
 	struct jpeg_destination_mgr mgr; // Default manager
@@ -38,6 +50,8 @@ typedef struct {
 static void _jpeg_set_dest_frame(j_compress_ptr jpeg, us_frame_s *frame);
 
 static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
+static void _jpeg_write_scanlines_yuv_planar(struct jpeg_compress_struct *jpeg, const us_frame_s *frame);
+static void _jpeg_write_scanlines_grey(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);
 #ifndef JCS_EXTENSIONS
@@ -50,7 +64,7 @@ static boolean _jpeg_empty_output_buffer(j_compress_ptr jpeg);
 static void _jpeg_term_destination(j_compress_ptr jpeg);
 
 
-void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned quality) {
+void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, uint quality) {
 	// This function based on compress_image_to_jpeg() from mjpg-streamer
 
 	us_frame_encoding_begin(src, dest, V4L2_PIX_FMT_JPEG);
@@ -69,11 +83,23 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
 	switch (src->format) {
 		case V4L2_PIX_FMT_YUYV:
 		case V4L2_PIX_FMT_YVYU:
-		case V4L2_PIX_FMT_UYVY: jpeg.in_color_space = JCS_YCbCr; break;
+		case V4L2_PIX_FMT_UYVY:
+		case V4L2_PIX_FMT_YUV420:
+		case V4L2_PIX_FMT_YVU420:
+			jpeg.in_color_space = JCS_YCbCr;
+			break;
+		case V4L2_PIX_FMT_GREY:
+			jpeg.input_components = 1;
+			jpeg.in_color_space = JCS_GRAYSCALE;
+			break;
 #		ifdef JCS_EXTENSIONS
-		case V4L2_PIX_FMT_BGR24: jpeg.in_color_space = JCS_EXT_BGR; break;
+		case V4L2_PIX_FMT_BGR24:
+			jpeg.in_color_space = JCS_EXT_BGR;
+			break;
 #		endif
-		default: jpeg.in_color_space = JCS_RGB; break;
+		default:
+			jpeg.in_color_space = JCS_RGB;
+			break;
 	}
 
 	jpeg_set_defaults(&jpeg);
@@ -85,9 +111,27 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
 		// https://www.fourcc.org/yuv.php
 		case V4L2_PIX_FMT_YUYV:
 		case V4L2_PIX_FMT_YVYU:
-		case V4L2_PIX_FMT_UYVY:		_jpeg_write_scanlines_yuv(&jpeg, src); break;
-		case V4L2_PIX_FMT_RGB565:	_jpeg_write_scanlines_rgb565(&jpeg, src); break;
-		case V4L2_PIX_FMT_RGB24:	_jpeg_write_scanlines_rgb24(&jpeg, src); break;
+		case V4L2_PIX_FMT_UYVY:
+			_jpeg_write_scanlines_yuv(&jpeg, src);
+			break;
+
+		case V4L2_PIX_FMT_YUV420:
+		case V4L2_PIX_FMT_YVU420:
+			_jpeg_write_scanlines_yuv_planar(&jpeg, src);
+			break;
+		
+		case V4L2_PIX_FMT_GREY:
+			_jpeg_write_scanlines_grey(&jpeg, src);
+			break;
+
+		case V4L2_PIX_FMT_RGB565:
+			_jpeg_write_scanlines_rgb565(&jpeg, src);
+			break;
+
+		case V4L2_PIX_FMT_RGB24:
+			_jpeg_write_scanlines_rgb24(&jpeg, src);
+			break;
+
 		case V4L2_PIX_FMT_BGR24:
 #			ifdef JCS_EXTENSIONS
 			_jpeg_write_scanlines_rgb24(&jpeg, src); // Use native JCS_EXT_BGR
@@ -95,7 +139,8 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
 			_jpeg_write_scanlines_bgr24(&jpeg, src);
 #			endif
 			break;
-		default: assert(0 && "Unsupported input format for CPU encoder"); return;
+		default:
+			US_RAISE("Unsupported input format for CPU encoder");
 	}
 
 	jpeg_finish_compress(&jpeg);
@@ -106,7 +151,7 @@ void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned q
 
 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)(
+		US_A((jpeg->dest = (struct jpeg_destination_mgr*)(*jpeg->mem->alloc_small)(
 			(j_common_ptr) jpeg, JPOOL_PERMANENT, sizeof(_jpeg_dest_manager_s)
 		)) != NULL);
 	}
@@ -121,19 +166,19 @@ static void _jpeg_set_dest_frame(j_compress_ptr jpeg, us_frame_s *frame) {
 }
 
 static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
-	uint8_t *line_buf;
+	u8 *line_buf;
 	US_CALLOC(line_buf, frame->width * 3);
 
-	const unsigned padding = us_frame_get_padding(frame);
-	const uint8_t *data = frame->data;
+	const uint padding = us_frame_get_padding(frame);
+	const u8 *data = frame->data;
 
 	while (jpeg->next_scanline < frame->height) {
-		uint8_t *ptr = line_buf;
+		u8 *ptr = line_buf;
 
-		for (unsigned x = 0; x < frame->width; ++x) {
+		for (uint x = 0; x < frame->width; ++x) {
 			// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-uyvy.html
 			const bool is_odd_pixel = x & 1;
-			uint8_t y, u, v;
+			u8 y, u, v;
 			if (frame->format == V4L2_PIX_FMT_YUYV) {
 				y = data[is_odd_pixel ? 2 : 0];
 				u = data[1];
@@ -147,8 +192,7 @@ static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const u
 				u = data[0];
 				v = data[2];
 			} else {
-				assert(0 && "Unsupported pixel format");
-				return; // Makes linter happy
+				US_RAISE("Unsupported pixel format");
 			}
 
 			ptr[0] = y;
@@ -167,21 +211,103 @@ static void _jpeg_write_scanlines_yuv(struct jpeg_compress_struct *jpeg, const u
 	free(line_buf);
 }
 
-static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
-	uint8_t *line_buf;
+static void _jpeg_write_scanlines_yuv_planar(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
+	u8 *line_buf;
 	US_CALLOC(line_buf, frame->width * 3);
 
-	const unsigned padding = us_frame_get_padding(frame);
-	const uint8_t *data = frame->data;
+	const uint padding = us_frame_get_padding(frame);
+	const uint image_size = frame->width * frame->height;
+	const uint chroma_array_size = (frame->used - image_size) / 2;
+	const uint chroma_matrix_order = (image_size / chroma_array_size) == 16 ? 4 : 2;
+	const u8 *data = frame->data;
+	const u8 *chroma1_data = frame->data + image_size;
+	const u8 *chroma2_data = frame->data + image_size + chroma_array_size;
+
+	//US_LOG_DEBUG("Planar data: Image Size %u, Chroma Array Size %u, Chroma Matrix Order %u",
+	//	image_size, chroma_array_size, chroma_matrix_order);
 
 	while (jpeg->next_scanline < frame->height) {
-		uint8_t *ptr = line_buf;
+		u8 *ptr = line_buf;
 
-		for (unsigned x = 0; x < frame->width; ++x) {
-			const unsigned int two_byte = (data[1] << 8) + data[0];
+		for (uint x = 0; x < frame->width; ++x) {
+			// See also: https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/pixfmt-yuv420.html
+			u8 y = data[x];
+			u8 u;
+			u8 v;
+			uint chroma_position = x / chroma_matrix_order;
+
+			switch (frame->format) {
+				case V4L2_PIX_FMT_YUV420:
+					u = chroma1_data[chroma_position];
+					v = chroma2_data[chroma_position];
+					break;
+				case V4L2_PIX_FMT_YVU420:
+					u = chroma2_data[chroma_position];
+					v = chroma1_data[chroma_position];
+					break;
+				default:
+					US_RAISE("Unsupported pixel format");
+			}
+
+			ptr[0] = y;
+			ptr[1] = u;
+			ptr[2] = v;
+			ptr += 3;
+		}
+
+		data += frame->width + padding;
+
+		if (jpeg->next_scanline > 0 && jpeg->next_scanline % chroma_matrix_order == 0) {
+			chroma1_data += (frame->width + padding) / chroma_matrix_order;
+			chroma2_data += (frame->width + padding) / chroma_matrix_order;
+		}
+
+		JSAMPROW scanlines[1] = {line_buf};
+		jpeg_write_scanlines(jpeg, scanlines, 1);
+	}
+
+	free(line_buf);
+}
+
+static void _jpeg_write_scanlines_grey(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
+	u8 *line_buf;
+	US_CALLOC(line_buf, frame->width);
+
+	const uint padding = us_frame_get_padding(frame);
+	const u8 *data = frame->data;
+
+	while (jpeg->next_scanline < frame->height) {
+		u8 *ptr = line_buf;
+
+		for (uint x = 0; x < frame->width; ++x) {
+			ptr[0] = data[x];
+			ptr += 1;
+		}
+
+		data += frame->width + padding;
+
+		JSAMPROW scanlines[1] = {line_buf};
+		jpeg_write_scanlines(jpeg, scanlines, 1);
+	}
+
+	free(line_buf);
+}
+
+static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
+	u8 *line_buf;
+	US_CALLOC(line_buf, frame->width * 3);
+
+	const uint padding = us_frame_get_padding(frame);
+	const u8 *data = frame->data;
+
+	while (jpeg->next_scanline < frame->height) {
+		u8 *ptr = line_buf;
+
+		for (uint x = 0; x < frame->width; ++x) {
+			const uint two_byte = (data[1] << 8) + data[0];
 
 			ptr[0] = data[1] & 248; // Red
-			ptr[1] = (uint8_t)((two_byte & 2016) >> 3); // Green
+			ptr[1] = (u8)((two_byte & 2016) >> 3); // Green
 			ptr[2] = (data[0] & 31) * 8; // Blue
 			ptr += 3;
 
@@ -197,8 +323,8 @@ static void _jpeg_write_scanlines_rgb565(struct jpeg_compress_struct *jpeg, cons
 }
 
 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;
+	const uint padding = us_frame_get_padding(frame);
+	u8 *data = frame->data;
 
 	while (jpeg->next_scanline < frame->height) {
 		JSAMPROW scanlines[1] = {data};
@@ -210,17 +336,17 @@ static void _jpeg_write_scanlines_rgb24(struct jpeg_compress_struct *jpeg, const
 
 #ifndef JCS_EXTENSIONS
 static void _jpeg_write_scanlines_bgr24(struct jpeg_compress_struct *jpeg, const us_frame_s *frame) {
-	uint8_t *line_buf;
+	u8 *line_buf;
 	US_CALLOC(line_buf, frame->width * 3);
 
-	const unsigned padding = us_frame_get_padding(frame);
-	uint8_t *data = frame->data;
+	const uint padding = us_frame_get_padding(frame);
+	u8 *data = frame->data;
 
 	while (jpeg->next_scanline < frame->height) {
-		uint8_t *ptr = line_buf;
+		u8 *ptr = line_buf;
 
 		// swap B and R values
-		for (unsigned x = 0; x < frame->width * 3; x += 3) {
+		for (uint x = 0; x < frame->width * 3; x += 3) {
 			ptr[0] = data[x + 2];
 			ptr[1] = data[x + 1];
 			ptr[2] = data[x];
@@ -243,7 +369,7 @@ static void _jpeg_init_destination(j_compress_ptr jpeg) {
 	_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)(
+	US_A((dest->buf = (JOCTET*)(*jpeg->mem->alloc_small)(
 		(j_common_ptr) jpeg, JPOOL_IMAGE, JPEG_OUTPUT_BUFFER_SIZE * sizeof(JOCTET)
 	)) != NULL);
 

src/ustreamer/encoders/cpu/encoder.h

@@ -22,17 +22,8 @@
 
 #pragma once
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <assert.h>
-
-#include <jpeglib.h>
-
-#include <linux/videodev2.h>
-
-#include "../../../libs/tools.h"
+#include "../../../libs/types.h"
 #include "../../../libs/frame.h"
 
 
-void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, unsigned quality);
+void us_cpu_encoder_compress(const us_frame_s *src, us_frame_s *dest, uint quality);

src/ustreamer/encoders/hw/encoder.c

@@ -27,13 +27,23 @@
 
 #include "encoder.h"
 
+#include <string.h>
+
+#include <linux/videodev2.h>
+
+#include "../../../libs/types.h"
+#include "../../../libs/tools.h"
+#include "../../../libs/frame.h"
+
+#include "huffman.h"
+
 
 void _copy_plus_huffman(const us_frame_s *src, us_frame_s *dest);
-static bool _is_huffman(const uint8_t *data);
+static bool _is_huffman(const u8 *data);
 
 
 void us_hw_encoder_compress(const us_frame_s *src, us_frame_s *dest) {
-	assert(us_is_jpeg(src->format));
+	US_A(us_is_jpeg(src->format));
 	_copy_plus_huffman(src, dest);
 }
 
@@ -41,8 +51,8 @@ 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 *const src_end = src->data + src->used;
+		const u8 *src_ptr = src->data;
+		const u8 *const src_end = src->data + src->used;
 
 		while ((((src_ptr[0] << 8) | src_ptr[1]) != 0xFFC0) && (src_ptr < src_end)) {
 			src_ptr += 1;
@@ -52,7 +62,7 @@ void _copy_plus_huffman(const us_frame_s *src, us_frame_s *dest) {
 			return;
 		}
 
-		const size_t paste = src_ptr - src->data;
+		const uz paste = src_ptr - src->data;
 
 		us_frame_set_data(dest, src->data, paste);
 		us_frame_append_data(dest, US_HUFFMAN_TABLE, sizeof(US_HUFFMAN_TABLE));
@@ -65,14 +75,14 @@ void _copy_plus_huffman(const us_frame_s *src, us_frame_s *dest) {
 	us_frame_encoding_end(dest);
 }
 
-static bool _is_huffman(const uint8_t *data) {
-	unsigned count = 0;
+static bool _is_huffman(const u8 *data) {
+	uint count = 0;
 
-	while ((((uint16_t)data[0] << 8) | data[1]) != 0xFFDA) {
+	while ((((u16)data[0] << 8) | data[1]) != 0xFFDA) {
 		if (count++ > 2048) {
 			return false;
 		}
-		if ((((uint16_t)data[0] << 8) | data[1]) == 0xFFC4) {
+		if ((((u16)data[0] << 8) | data[1]) == 0xFFC4) {
 			return true;
 		}
 		data += 1;

src/ustreamer/encoders/hw/encoder.h

@@ -22,16 +22,7 @@
 
 #pragma once
 
-#include <stdint.h>
-#include <stdbool.h>
-#include <string.h>
-#include <assert.h>
-
-#include <linux/videodev2.h>
-
 #include "../../../libs/frame.h"
 
-#include "huffman.h"
-
 
 void us_hw_encoder_compress(const us_frame_s *src, us_frame_s *dest);

src/ustreamer/encoders/hw/huffman.h

@@ -27,10 +27,10 @@
 
 #pragma once
 
-#include <stdint.h>
+#include "../../../libs/types.h"
 
 
-static const uint8_t US_HUFFMAN_TABLE[] = {
+static const u8 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

@@ -32,7 +32,7 @@ us_gpio_s us_g_gpio = {
 		.role = x_role, \
 		.consumer = NULL, \
 		.line = NULL, \
-		.state = false \
+		.on = false \
 	}
 	.prog_running = MAKE_OUTPUT("prog-running"),
 	.stream_online = MAKE_OUTPUT("stream-online"),
@@ -46,13 +46,13 @@ us_gpio_s us_g_gpio = {
 };
 
 
-static void _gpio_output_init(us_gpio_output_s *output, struct gpiod_chip *chip);
-static void _gpio_output_destroy(us_gpio_output_s *output);
+static void _gpio_output_init(us_gpio_output_s *out, struct gpiod_chip *chip);
+static void _gpio_output_destroy(us_gpio_output_s *out);
 
 
 void us_gpio_init(void) {
 #	ifndef HAVE_GPIOD2
-	assert(us_g_gpio.chip == NULL);
+	US_A(us_g_gpio.chip == NULL);
 #	endif
 	if (
 		us_g_gpio.prog_running.pin >= 0
@@ -92,23 +92,23 @@ void us_gpio_destroy(void) {
 	}
 }
 
-int us_gpio_inner_set(us_gpio_output_s *output, bool state) {
+int us_gpio_inner_set(us_gpio_output_s *out, bool on) {
 	int retval = 0;
 
 #	ifndef HAVE_GPIOD2
-	assert(us_g_gpio.chip != NULL);
+	US_A(us_g_gpio.chip != NULL);
 #	endif
-	assert(output->line != NULL);
-	assert(output->state != state); // Must be checked in macro for the performance
+	US_A(out->line != NULL);
+	US_A(out->on != on); // Must be checked in macro for the performance
 	US_MUTEX_LOCK(us_g_gpio.mutex);
 
 #	ifdef HAVE_GPIOD2
-	if (gpiod_line_request_set_value(output->line, output->pin, state) < 0) {
+	if (gpiod_line_request_set_value(out->line, out->pin, on) < 0) {
 #	else
-	if (gpiod_line_set_value(output->line, (int)state) < 0) {
+	if (gpiod_line_set_value(out->line, (int)on) < 0) {
 #	endif
-		US_LOG_PERROR("GPIO: Can't write value %d to line %s", state, output->consumer); \
-		_gpio_output_destroy(output);
+		US_LOG_PERROR("GPIO: Can't write value %d to line %s", on, out->consumer); \
+		_gpio_output_destroy(out);
 		retval = -1;
 	}
 
@@ -116,65 +116,65 @@ int us_gpio_inner_set(us_gpio_output_s *output, bool state) {
 	return retval;
 }
 
-static void _gpio_output_init(us_gpio_output_s *output, struct gpiod_chip *chip) {
-	assert(output->line == NULL);
+static void _gpio_output_init(us_gpio_output_s *out, struct gpiod_chip *chip) {
+	US_A(out->line == NULL);
 
-	US_ASPRINTF(output->consumer, "%s::%s", us_g_gpio.consumer_prefix, output->role);
+	US_ASPRINTF(out->consumer, "%s::%s", us_g_gpio.consumer_prefix, out->role);
 
-	if (output->pin >= 0) {
+	if (out->pin >= 0) {
 #		ifdef HAVE_GPIOD2
 		struct gpiod_line_settings *line_settings;
-		assert(line_settings = gpiod_line_settings_new());
-		assert(!gpiod_line_settings_set_direction(line_settings, GPIOD_LINE_DIRECTION_OUTPUT));
-		assert(!gpiod_line_settings_set_output_value(line_settings, false));
+		US_A(line_settings = gpiod_line_settings_new());
+		US_A(!gpiod_line_settings_set_direction(line_settings, GPIOD_LINE_DIRECTION_OUTPUT));
+		US_A(!gpiod_line_settings_set_output_value(line_settings, false));
 
 		struct gpiod_line_config *line_config;
-		assert(line_config = gpiod_line_config_new());
-		const unsigned offset = output->pin;
-		assert(!gpiod_line_config_add_line_settings(line_config, &offset, 1, line_settings));
+		US_A(line_config = gpiod_line_config_new());
+		const unsigned offset = out->pin;
+		US_A(!gpiod_line_config_add_line_settings(line_config, &offset, 1, line_settings));
 
-		struct gpiod_request_config *request_config;
-		assert(request_config = gpiod_request_config_new());
-		gpiod_request_config_set_consumer(request_config, output->consumer);
+		struct gpiod_request_config *req_config;
+		US_A(req_config = gpiod_request_config_new());
+		gpiod_request_config_set_consumer(req_config, out->consumer);
 
-		if ((output->line = gpiod_chip_request_lines(chip, request_config, line_config)) == NULL) {
-			US_LOG_PERROR("GPIO: Can't request pin=%d as %s", output->pin, output->consumer);
+		if ((out->line = gpiod_chip_request_lines(chip, req_config, line_config)) == NULL) {
+			US_LOG_PERROR("GPIO: Can't request pin=%d as %s", out->pin, out->consumer);
 		}
 
-		gpiod_request_config_free(request_config);
+		gpiod_request_config_free(req_config);
 		gpiod_line_config_free(line_config);
 		gpiod_line_settings_free(line_settings);
 
-		if (output->line == NULL) {
-			_gpio_output_destroy(output);
+		if (out->line == NULL) {
+			_gpio_output_destroy(out);
 		}
 
 #		else
 
-		if ((output->line = gpiod_chip_get_line(chip, output->pin)) != NULL) {
-			if (gpiod_line_request_output(output->line, output->consumer, 0) < 0) {
-				US_LOG_PERROR("GPIO: Can't request pin=%d as %s", output->pin, output->consumer);
-				_gpio_output_destroy(output);
+		if ((out->line = gpiod_chip_get_line(chip, out->pin)) != NULL) {
+			if (gpiod_line_request_output(out->line, out->consumer, 0) < 0) {
+				US_LOG_PERROR("GPIO: Can't request pin=%d as %s", out->pin, out->consumer);
+				_gpio_output_destroy(out);
 			}
 		} else {
-			US_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", out->pin, out->consumer);
 		}
 #		endif
 	}
 }
 
-static void _gpio_output_destroy(us_gpio_output_s *output) {
-	if (output->line != NULL) {
+static void _gpio_output_destroy(us_gpio_output_s *out) {
+	if (out->line != NULL) {
 #		ifdef HAVE_GPIOD2
-		gpiod_line_request_release(output->line);
+		gpiod_line_request_release(out->line);
 #		else
-		gpiod_line_release(output->line);
+		gpiod_line_release(out->line);
 #		endif
-		output->line = NULL;
+		out->line = NULL;
 	}
-	if (output->consumer != NULL) {
-		free(output->consumer);
-		output->consumer = NULL;
+	if (out->consumer != NULL) {
+		free(out->consumer);
+		out->consumer = NULL;
 	}
-	output->state = false;
+	out->on = false;
 }

src/ustreamer/gpio/gpio.h

@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <string.h>
-#include <assert.h>
 
 #include <pthread.h>
 #include <gpiod.h>
@@ -44,7 +43,7 @@ typedef struct {
 #	else
 	struct gpiod_line			*line;
 #	endif
-	bool						state;
+	bool						on;
 } us_gpio_output_s;
 
 typedef struct {
@@ -69,27 +68,27 @@ extern us_gpio_s us_g_gpio;
 
 void us_gpio_init(void);
 void us_gpio_destroy(void);
-int us_gpio_inner_set(us_gpio_output_s *output, bool state);
+int us_gpio_inner_set(us_gpio_output_s *out, bool on);
 
 
-#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; \
+#define SET_ON(x_out, x_on) { \
+		if (x_out.line && x_out.on != x_on) { \
+			if (!us_gpio_inner_set(&x_out, x_on)) { \
+				x_out.on = x_on; \
 			} \
 		} \
 	}
 
-INLINE void us_gpio_set_prog_running(bool state) {
-	SET_STATE(us_g_gpio.prog_running, state);
+INLINE void us_gpio_set_prog_running(bool on) {
+	SET_ON(us_g_gpio.prog_running, on);
 }
 
-INLINE void us_gpio_set_stream_online(bool state) {
-	SET_STATE(us_g_gpio.stream_online, state);
+INLINE void us_gpio_set_stream_online(bool on) {
+	SET_ON(us_g_gpio.stream_online, on);
 }
 
-INLINE void us_gpio_set_has_http_clients(bool state) {
-	SET_STATE(us_g_gpio.has_http_clients, state);
+INLINE void us_gpio_set_has_http_clients(bool on) {
+	SET_ON(us_g_gpio.has_http_clients, on);
 }
 
-#undef SET_STATE
+#undef SET_ON

src/ustreamer/http/mime.c

@@ -67,6 +67,6 @@ const char *us_guess_mime_type(const char *path) {
 		}
 	});
 
-	misc:
-		return "application/misc";
+misc:
+	return "application/misc";
 }

src/ustreamer/http/server.c

@@ -31,7 +31,6 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <fcntl.h>
-#include <assert.h>
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -75,17 +74,17 @@
 #endif
 
 
-static int _http_preprocess_request(struct evhttp_request *request, us_server_s *server);
+static int _http_preprocess_request(struct evhttp_request *req, us_server_s *server);
 
-static int _http_check_run_compat_action(struct evhttp_request *request, void *v_server);
+static int _http_check_run_compat_action(struct evhttp_request *req, void *v_server);
 
-static void _http_callback_root(struct evhttp_request *request, void *v_server);
-static void _http_callback_favicon(struct evhttp_request *request, void *v_server);
-static void _http_callback_static(struct evhttp_request *request, void *v_server);
-static void _http_callback_state(struct evhttp_request *request, void *v_server);
-static void _http_callback_snapshot(struct evhttp_request *request, void *v_server);
+static void _http_callback_root(struct evhttp_request *req, void *v_server);
+static void _http_callback_favicon(struct evhttp_request *req, void *v_server);
+static void _http_callback_static(struct evhttp_request *req, void *v_server);
+static void _http_callback_state(struct evhttp_request *req, void *v_server);
+static void _http_callback_snapshot(struct evhttp_request *req, void *v_server);
 
-static void _http_callback_stream(struct evhttp_request *request, void *v_server);
+static void _http_callback_stream(struct evhttp_request *req, void *v_server);
 static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_ctx);
 static void _http_callback_stream_error(struct bufferevent *buf_event, short what, void *v_ctx);
 
@@ -96,18 +95,18 @@ static void _http_send_snapshot(us_server_s *server);
 static bool _expose_frame(us_server_s *server, const us_frame_s *frame);
 
 
-#define _LOG_ERROR(x_msg, ...)	US_LOG_ERROR("HTTP: " x_msg, ##__VA_ARGS__)
-#define _LOG_PERROR(x_msg, ...)	US_LOG_PERROR("HTTP: " x_msg, ##__VA_ARGS__)
+#define _LOG_ERROR(x_msg, ...)		US_LOG_ERROR("HTTP: " x_msg, ##__VA_ARGS__)
+#define _LOG_PERROR(x_msg, ...)		US_LOG_PERROR("HTTP: " x_msg, ##__VA_ARGS__)
 #define _LOG_INFO(x_msg, ...)		US_LOG_INFO("HTTP: " x_msg, ##__VA_ARGS__)
 #define _LOG_VERBOSE(x_msg, ...)	US_LOG_VERBOSE("HTTP: " x_msg, ##__VA_ARGS__)
-#define _LOG_DEBUG(x_msg, ...)	US_LOG_DEBUG("HTTP: " x_msg, ##__VA_ARGS__)
+#define _LOG_DEBUG(x_msg, ...)		US_LOG_DEBUG("HTTP: " x_msg, ##__VA_ARGS__)
 
-#define _A_EVBUFFER_NEW(x_buf)						assert((x_buf = evbuffer_new()) != NULL)
-#define _A_EVBUFFER_ADD(x_buf, x_data, x_size)		assert(!evbuffer_add(x_buf, x_data, x_size))
-#define _A_EVBUFFER_ADD_PRINTF(x_buf, x_fmt, ...)	assert(evbuffer_add_printf(x_buf, x_fmt, ##__VA_ARGS__) >= 0)
+#define _A_EVBUFFER_NEW(x_buf)						US_A((x_buf = evbuffer_new()) != NULL)
+#define _A_EVBUFFER_ADD(x_buf, x_data, x_size)		US_A(!evbuffer_add(x_buf, x_data, x_size))
+#define _A_EVBUFFER_ADD_PRINTF(x_buf, x_fmt, ...)	US_A(evbuffer_add_printf(x_buf, x_fmt, ##__VA_ARGS__) >= 0)
 
-#define _A_ADD_HEADER(x_request, x_key, x_value) \
-		assert(!evhttp_add_header(evhttp_request_get_output_headers(x_request), x_key, x_value))
+#define _A_ADD_HEADER(x_req, x_key, x_value) \
+		US_A(!evhttp_add_header(evhttp_request_get_output_headers(x_req), x_key, x_value))
 
 
 us_server_s *us_server_init(us_stream_s *stream) {
@@ -135,9 +134,9 @@ us_server_s *us_server_init(us_stream_s *stream) {
 	server->stream = stream;
 	server->run = run;
 
-	assert(!evthread_use_pthreads());
-	assert((run->base = event_base_new()) != NULL);
-	assert((run->http = evhttp_new(run->base)) != NULL);
+	US_A(!evthread_use_pthreads());
+	US_A((run->base = event_base_new()) != NULL);
+	US_A((run->http = evhttp_new(run->base)) != NULL);
 	evhttp_set_allowed_methods(run->http, EVHTTP_REQ_GET|EVHTTP_REQ_HEAD|EVHTTP_REQ_OPTIONS);
 	return server;
 }
@@ -188,26 +187,18 @@ int us_server_listen(us_server_s *server) {
 			_LOG_INFO("Enabling the file server: %s", server->static_path);
 			evhttp_set_gencb(run->http, _http_callback_static, (void*)server);
 		} else {
-			assert(!evhttp_set_cb(run->http, "/", _http_callback_root, (void*)server));
-			assert(!evhttp_set_cb(run->http, "/favicon.ico", _http_callback_favicon, (void*)server));
+			US_A(!evhttp_set_cb(run->http, "/", _http_callback_root, (void*)server));
+			US_A(!evhttp_set_cb(run->http, "/favicon.ico", _http_callback_favicon, (void*)server));
 		}
-		assert(!evhttp_set_cb(run->http, "/state", _http_callback_state, (void*)server));
-		assert(!evhttp_set_cb(run->http, "/snapshot", _http_callback_snapshot, (void*)server));
-		assert(!evhttp_set_cb(run->http, "/stream", _http_callback_stream, (void*)server));
+		US_A(!evhttp_set_cb(run->http, "/state", _http_callback_state, (void*)server));
+		US_A(!evhttp_set_cb(run->http, "/snapshot", _http_callback_snapshot, (void*)server));
+		US_A(!evhttp_set_cb(run->http, "/stream", _http_callback_stream, (void*)server));
 	}
 
 	us_frame_copy(stream->run->blank->jpeg, ex->frame);
 
-	{
-		struct timeval interval = {0};
-		if (stream->cap->desired_fps > 0) {
-			interval.tv_usec = 1000000 / (stream->cap->desired_fps * 2);
-		} else {
-			interval.tv_usec = 16000; // ~60fps
-		}
-		assert((run->refresher = event_new(run->base, -1, EV_PERSIST, _http_refresher, server)) != NULL);
-		assert(!event_add(run->refresher, &interval));
-	}
+	US_A((run->refresher = event_new(run->base, -1, 0, _http_refresher, server)) != NULL);
+	stream->run->http->jpeg_refresher = run->refresher;
 
 	evhttp_set_timeout(run->http, server->timeout);
 
@@ -268,66 +259,66 @@ void us_server_loop_break(us_server_s *server) {
 	event_base_loopbreak(server->run->base);
 }
 
-static int _http_preprocess_request(struct evhttp_request *request, us_server_s *server) {
+static int _http_preprocess_request(struct evhttp_request *req, us_server_s *server) {
 	const us_server_runtime_s *const run = server->run;
 
-	atomic_store(&server->stream->run->http->last_request_ts, us_get_now_monotonic());
+	atomic_store(&server->stream->run->http->last_req_ts, us_get_now_monotonic());
 
 	if (server->allow_origin[0] != '\0') {
-		const char *const cors_headers = us_evhttp_get_header(request, "Access-Control-Request-Headers");
-		const char *const cors_method = us_evhttp_get_header(request, "Access-Control-Request-Method");
+		const char *const cors_headers = us_evhttp_get_header(req, "Access-Control-Request-Headers");
+		const char *const cors_method = us_evhttp_get_header(req, "Access-Control-Request-Method");
 
-		_A_ADD_HEADER(request, "Access-Control-Allow-Origin", server->allow_origin);
-		_A_ADD_HEADER(request, "Access-Control-Allow-Credentials", "true");
+		_A_ADD_HEADER(req, "Access-Control-Allow-Origin", server->allow_origin);
+		_A_ADD_HEADER(req, "Access-Control-Allow-Credentials", "true");
 		if (cors_headers != NULL) {
-			_A_ADD_HEADER(request, "Access-Control-Allow-Headers", cors_headers);
+			_A_ADD_HEADER(req, "Access-Control-Allow-Headers", cors_headers);
 		}
 		if (cors_method != NULL) {
-			_A_ADD_HEADER(request, "Access-Control-Allow-Methods", cors_method);
+			_A_ADD_HEADER(req, "Access-Control-Allow-Methods", cors_method);
 		}
 	}
 
-	if (evhttp_request_get_command(request) == EVHTTP_REQ_OPTIONS) {
-		evhttp_send_reply(request, HTTP_OK, "OK", NULL);
+	if (evhttp_request_get_command(req) == EVHTTP_REQ_OPTIONS) {
+		evhttp_send_reply(req, HTTP_OK, "OK", NULL);
 		return -1;
 	}
 
 	if (run->auth_token != NULL) {
-		const char *const token = us_evhttp_get_header(request, "Authorization");
+		const char *const token = us_evhttp_get_header(req, "Authorization");
 		if (token == NULL || strcmp(token, run->auth_token) != 0) {
-			_A_ADD_HEADER(request, "WWW-Authenticate", "Basic realm=\"Restricted area\"");
-			evhttp_send_reply(request, 401, "Unauthorized", NULL);
+			_A_ADD_HEADER(req, "WWW-Authenticate", "Basic realm=\"Restricted area\"");
+			evhttp_send_reply(req, 401, "Unauthorized", NULL);
 			return -1;
 		}
 	}
 
-	if (evhttp_request_get_command(request) == EVHTTP_REQ_HEAD) {
-		evhttp_send_reply(request, HTTP_OK, "OK", NULL);
+	if (evhttp_request_get_command(req) == EVHTTP_REQ_HEAD) {
+		evhttp_send_reply(req, HTTP_OK, "OK", NULL);
 		return -1;
 	}
 	return 0;
 }
 
 #define PREPROCESS_REQUEST { \
-		if (_http_preprocess_request(request, server) < 0) { \
+		if (_http_preprocess_request(req, server) < 0) { \
 			return; \
 		} \
 	}
 
-static int _http_check_run_compat_action(struct evhttp_request *request, void *v_server) {
+static int _http_check_run_compat_action(struct evhttp_request *req, void *v_server) {
 	// MJPG-Streamer compatibility layer
 
 	int retval = -1;
 
 	struct evkeyvalq params;
-	evhttp_parse_query(evhttp_request_get_uri(request), &params);
+	evhttp_parse_query(evhttp_request_get_uri(req), &params);
 	const char *const action = evhttp_find_header(&params, "action");
 
 	if (action && !strcmp(action, "snapshot")) {
-		_http_callback_snapshot(request, v_server);
+		_http_callback_snapshot(req, v_server);
 		retval = 0;
 	} else if (action && !strcmp(action, "stream")) {
-		_http_callback_stream(request, v_server);
+		_http_callback_stream(req, v_server);
 		retval = 0;
 	}
 
@@ -336,12 +327,12 @@ static int _http_check_run_compat_action(struct evhttp_request *request, void *v
 }
 
 #define COMPAT_REQUEST { \
-		if (_http_check_run_compat_action(request, v_server) == 0) { \
+		if (_http_check_run_compat_action(req, v_server) == 0) { \
 			return; \
 		} \
 	}
 
-static void _http_callback_root(struct evhttp_request *request, void *v_server) {
+static void _http_callback_root(struct evhttp_request *req, void *v_server) {
 	us_server_s *const server = v_server;
 
 	PREPROCESS_REQUEST;
@@ -350,13 +341,13 @@ static void _http_callback_root(struct evhttp_request *request, void *v_server)
 	struct evbuffer *buf;
 	_A_EVBUFFER_NEW(buf);
 	_A_EVBUFFER_ADD_PRINTF(buf, "%s", US_HTML_INDEX_PAGE);
-	_A_ADD_HEADER(request, "Content-Type", "text/html");
-	evhttp_send_reply(request, HTTP_OK, "OK", buf);
+	_A_ADD_HEADER(req, "Content-Type", "text/html");
+	evhttp_send_reply(req, HTTP_OK, "OK", buf);
 
 	evbuffer_free(buf);
 }
 
-static void _http_callback_favicon(struct evhttp_request *request, void *v_server) {
+static void _http_callback_favicon(struct evhttp_request *req, void *v_server) {
 	us_server_s *const server = v_server;
 
 	PREPROCESS_REQUEST;
@@ -364,13 +355,13 @@ static void _http_callback_favicon(struct evhttp_request *request, void *v_serve
 	struct evbuffer *buf;
 	_A_EVBUFFER_NEW(buf);
 	_A_EVBUFFER_ADD(buf, (const void*)US_FAVICON_ICO_DATA, US_FAVICON_ICO_DATA_SIZE);
-	_A_ADD_HEADER(request, "Content-Type", "image/x-icon");
-	evhttp_send_reply(request, HTTP_OK, "OK", buf);
+	_A_ADD_HEADER(req, "Content-Type", "image/x-icon");
+	evhttp_send_reply(req, HTTP_OK, "OK", buf);
 
 	evbuffer_free(buf);
 }
 
-static void _http_callback_static(struct evhttp_request *request, void *v_server) {
+static void _http_callback_static(struct evhttp_request *req, void *v_server) {
 	us_server_s *const server = v_server;
 
 	PREPROCESS_REQUEST;
@@ -384,7 +375,7 @@ static void _http_callback_static(struct evhttp_request *request, void *v_server
 
 	{
 		const char *uri_path;
-		if ((uri = evhttp_uri_parse(evhttp_request_get_uri(request))) == NULL) {
+		if ((uri = evhttp_uri_parse(evhttp_request_get_uri(req))) == NULL) {
 			goto bad_request;
 		}
 		if ((uri_path = (char*)evhttp_uri_get_path(uri)) == NULL) {
@@ -421,17 +412,17 @@ static void _http_callback_static(struct evhttp_request *request, void *v_server
 		// and will close it when finished transferring data
 		fd = -1;
 
-		_A_ADD_HEADER(request, "Content-Type", us_guess_mime_type(static_path));
-		evhttp_send_reply(request, HTTP_OK, "OK", buf);
+		_A_ADD_HEADER(req, "Content-Type", us_guess_mime_type(static_path));
+		evhttp_send_reply(req, HTTP_OK, "OK", buf);
 		goto cleanup;
 	}
 
 bad_request:
-	evhttp_send_error(request, HTTP_BADREQUEST, NULL);
+	evhttp_send_error(req, HTTP_BADREQUEST, NULL);
 	goto cleanup;
 
 not_found:
-	evhttp_send_error(request, HTTP_NOTFOUND, NULL);
+	evhttp_send_error(req, HTTP_NOTFOUND, NULL);
 	goto cleanup;
 
 cleanup:
@@ -444,7 +435,7 @@ cleanup:
 
 #undef COMPAT_REQUEST
 
-static void _http_callback_state(struct evhttp_request *request, void *v_server) {
+static void _http_callback_state(struct evhttp_request *req, void *v_server) {
 	us_server_s *const server = v_server;
 	us_server_runtime_s *const run = server->run;
 	us_server_exposed_s *const ex = run->exposed;
@@ -459,74 +450,75 @@ static void _http_callback_state(struct evhttp_request *request, void *v_server)
 	struct evbuffer *buf;
 	_A_EVBUFFER_NEW(buf);
 
-	_A_EVBUFFER_ADD_PRINTF(buf,
+	_A_EVBUFFER_ADD_PRINTF(
+		buf,
 		"{\"ok\": true, \"result\": {"
 		" \"instance_id\": \"%s\","
 		" \"encoder\": {\"type\": \"%s\", \"quality\": %u},",
 		server->instance_id,
 		us_encoder_type_to_string(enc_type),
-		enc_quality
-	);
+		enc_quality);
 
 #	ifdef WITH_V4P
 	if (stream->drm != NULL) {
 		us_fpsi_meta_s meta;
 		const uint fps = us_fpsi_get(stream->run->http->drm_fpsi, &meta);
-		_A_EVBUFFER_ADD_PRINTF(buf,
+		_A_EVBUFFER_ADD_PRINTF(
+			buf,
 			" \"drm\": {\"live\": %s, \"fps\": %u},",
 			us_bool_to_string(meta.online),
-			fps
-		);
+			fps);
 	}
 #	endif
 
 	if (stream->h264_sink != NULL) {
 		us_fpsi_meta_s meta;
 		const uint fps = us_fpsi_get(stream->run->http->h264_fpsi, &meta);
-		_A_EVBUFFER_ADD_PRINTF(buf,
+		_A_EVBUFFER_ADD_PRINTF(
+			buf,
 			" \"h264\": {\"bitrate\": %u, \"gop\": %u, \"online\": %s, \"fps\": %u},",
 			stream->h264_bitrate,
 			stream->h264_gop,
 			us_bool_to_string(meta.online),
-			fps
-		);
+			fps);
 	}
 
 	if (stream->jpeg_sink != NULL || stream->h264_sink != NULL) {
 		_A_EVBUFFER_ADD_PRINTF(buf, " \"sinks\": {");
 		if (stream->jpeg_sink != NULL) {
-			_A_EVBUFFER_ADD_PRINTF(buf,
+			_A_EVBUFFER_ADD_PRINTF(
+				buf,
 				"\"jpeg\": {\"has_clients\": %s}",
-				us_bool_to_string(atomic_load(&stream->jpeg_sink->has_clients))
-			);
+				us_bool_to_string(atomic_load(&stream->jpeg_sink->has_clients)));
 		}
 		if (stream->h264_sink != NULL) {
-			_A_EVBUFFER_ADD_PRINTF(buf,
+			_A_EVBUFFER_ADD_PRINTF(
+				buf,
 				"%s\"h264\": {\"has_clients\": %s}",
 				(stream->jpeg_sink ? ", " : ""),
-				us_bool_to_string(atomic_load(&stream->h264_sink->has_clients))
-			);
+				us_bool_to_string(atomic_load(&stream->h264_sink->has_clients)));
 		}
 		_A_EVBUFFER_ADD_PRINTF(buf, "},");
 	}
 
 	us_fpsi_meta_s captured_meta;
 	const uint captured_fps = us_fpsi_get(stream->run->http->captured_fpsi, &captured_meta);
-	_A_EVBUFFER_ADD_PRINTF(buf,
+	_A_EVBUFFER_ADD_PRINTF(
+		buf,
 		" \"source\": {\"resolution\": {\"width\": %u, \"height\": %u},"
 		" \"online\": %s, \"desired_fps\": %u, \"captured_fps\": %u},"
 		" \"stream\": {\"queued_fps\": %u, \"clients\": %u, \"clients_stat\": {",
 		(server->fake_width ? server->fake_width : captured_meta.width),
 		(server->fake_height ? server->fake_height : captured_meta.height),
 		us_bool_to_string(captured_meta.online),
-		stream->cap->desired_fps,
+		stream->desired_fps,
 		captured_fps,
 		us_fpsi_get(ex->queued_fpsi, NULL),
-		run->stream_clients_count
-	);
+		run->stream_clients_count);
 
 	US_LIST_ITERATE(run->stream_clients, client, { // cppcheck-suppress constStatement
-		_A_EVBUFFER_ADD_PRINTF(buf,
+		_A_EVBUFFER_ADD_PRINTF(
+			buf,
 			"\"%" PRIx64 "\": {\"fps\": %u, \"extra_headers\": %s, \"advance_headers\": %s,"
 			" \"dual_final_frames\": %s, \"zero_data\": %s, \"key\": \"%s\"}%s",
 			client->id,
@@ -536,18 +528,17 @@ static void _http_callback_state(struct evhttp_request *request, void *v_server)
 			us_bool_to_string(client->dual_final_frames),
 			us_bool_to_string(client->zero_data),
 			(client->key != NULL ? client->key : "0"),
-			(client->next ? ", " : "")
-		);
+			(client->next ? ", " : ""));
 	});
 
 	_A_EVBUFFER_ADD_PRINTF(buf, "}}}}");
 
-	_A_ADD_HEADER(request, "Content-Type", "application/json");
-	evhttp_send_reply(request, HTTP_OK, "OK", buf);
+	_A_ADD_HEADER(req, "Content-Type", "application/json");
+	evhttp_send_reply(req, HTTP_OK, "OK", buf);
 	evbuffer_free(buf);
 }
 
-static void _http_callback_snapshot(struct evhttp_request *request, void *v_server) {
+static void _http_callback_snapshot(struct evhttp_request *req, void *v_server) {
 	us_server_s *const server = v_server;
 
 	PREPROCESS_REQUEST;
@@ -555,14 +546,14 @@ static void _http_callback_snapshot(struct evhttp_request *request, void *v_serv
 	us_snapshot_client_s *client;
 	US_CALLOC(client, 1);
 	client->server = server;
-	client->request = request;
-	client->request_ts = us_get_now_monotonic();
+	client->req = req;
+	client->req_ts = us_get_now_monotonic();
 
 	atomic_fetch_add(&server->stream->run->http->snapshot_requested, 1);
 	US_LIST_APPEND(server->run->snapshot_clients, client);
 }
 
-static void _http_callback_stream(struct evhttp_request *request, void *v_server) {
+static void _http_callback_stream(struct evhttp_request *req, void *v_server) {
 	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L2814
 	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L2789
 	// https://github.com/libevent/libevent/blob/29cc8386a2f7911eaa9336692a2c5544d8b4734f/http.c#L362
@@ -574,17 +565,17 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 
 	PREPROCESS_REQUEST;
 
-	struct evhttp_connection *const conn = evhttp_request_get_connection(request);
+	struct evhttp_connection *const conn = evhttp_request_get_connection(req);
 	if (conn != NULL) {
 		us_stream_client_s *client;
 		US_CALLOC(client, 1);
 		client->server = server;
-		client->request = request;
+		client->req = req;
 		client->need_initial = true;
 		client->need_first_frame = true;
 
 		struct evkeyvalq params;
-		evhttp_parse_query(evhttp_request_get_uri(request), &params);
+		evhttp_parse_query(evhttp_request_get_uri(req), &params);
 #		define PARSE_PARAM(x_type, x_name) client->x_name = us_evkeyvalq_get_##x_type(&params, #x_name)
 		PARSE_PARAM(string, key);
 		PARSE_PARAM(true, extra_headers);
@@ -594,7 +585,7 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 #		undef PARSE_PARAM
 		evhttp_clear_headers(&params);
 
-		client->hostport = us_evhttp_get_hostport(request);
+		client->hostport = us_evhttp_get_hostport(req);
 		client->id = us_get_now_id();
 
 		{
@@ -620,7 +611,7 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 		if (server->tcp_nodelay && run->ext_fd >= 0) {
 			_LOG_DEBUG("Setting up TCP_NODELAY to the client %s ...", client->hostport);
 			const evutil_socket_t fd = bufferevent_getfd(buf_event);
-			assert(fd >= 0);
+			US_A(fd >= 0);
 			int on = 1;
 			if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (void*)&on, sizeof(on)) != 0) {
 				_LOG_PERROR("Can't set TCP_NODELAY to the client %s", client->hostport);
@@ -629,7 +620,7 @@ static void _http_callback_stream(struct evhttp_request *request, void *v_server
 		bufferevent_setcb(buf_event, NULL, NULL, _http_callback_stream_error, (void*)client);
 		bufferevent_enable(buf_event, EV_READ);
 	} else {
-		evhttp_request_free(request);
+		evhttp_request_free(req);
 	}
 }
 
@@ -667,21 +658,24 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 #	define BOUNDARY "boundarydonotcross"
 
 #	define ADD_ADVANCE_HEADERS \
-		_A_EVBUFFER_ADD_PRINTF(buf, \
-			"Content-Type: image/jpeg" RN "X-Timestamp: %.06Lf" RN RN, us_get_now_real())
+		_A_EVBUFFER_ADD_PRINTF( \
+			buf, \
+			"Content-Type: image/jpeg" RN "X-Timestamp: %.06Lf" RN RN, \
+			us_get_now_real())
 
 	if (client->need_initial) {
 		_A_EVBUFFER_ADD_PRINTF(buf, "HTTP/1.0 200 OK" RN);
 		
 		if (client->server->allow_origin[0] != '\0') {
-			const char *const cors_headers = us_evhttp_get_header(client->request, "Access-Control-Request-Headers");
-			const char *const cors_method = us_evhttp_get_header(client->request, "Access-Control-Request-Method");
+			const char *const cors_headers = us_evhttp_get_header(client->req, "Access-Control-Request-Headers");
+			const char *const cors_method = us_evhttp_get_header(client->req, "Access-Control-Request-Method");
 
-			_A_EVBUFFER_ADD_PRINTF(buf,
+			_A_EVBUFFER_ADD_PRINTF(
+				buf,
 				"Access-Control-Allow-Origin: %s" RN
 				"Access-Control-Allow-Credentials: true" RN,
-				client->server->allow_origin				
-			);
+				client->server->allow_origin);
+
 			if (cors_headers != NULL) {
 				_A_EVBUFFER_ADD_PRINTF(buf, "Access-Control-Allow-Headers: %s" RN, cors_headers);
 			}
@@ -690,7 +684,8 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 			}
 		}
 
-		_A_EVBUFFER_ADD_PRINTF(buf,
+		_A_EVBUFFER_ADD_PRINTF(
+			buf,
 			"Cache-Control: no-store, no-cache, must-revalidate, proxy-revalidate, pre-check=0, post-check=0, max-age=0" RN
 			"Pragma: no-cache" RN
 			"Expires: Mon, 3 Jan 2000 12:34:56 GMT" RN
@@ -701,36 +696,38 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 			(server->instance_id[0] == '\0' ? "" : "_"),
 			server->instance_id,
 			(client->key != NULL ? client->key : "0"),
-			client->id
-		);
+			client->id);
 
 		if (client->advance_headers) {
 			ADD_ADVANCE_HEADERS;
 		}
 
-		assert(!bufferevent_write_buffer(buf_event, buf));
+		US_A(!bufferevent_write_buffer(buf_event, buf));
 		client->need_initial = false;
 	}
 
 	if (!client->advance_headers) {
-		_A_EVBUFFER_ADD_PRINTF(buf,
+		_A_EVBUFFER_ADD_PRINTF(
+			buf,
 			"Content-Type: image/jpeg" RN
 			"Content-Length: %zu" RN
 			"X-Timestamp: %.06Lf" RN
 			"%s",
 			(!client->zero_data ? ex->frame->used : 0),
 			us_get_now_real(),
-			(client->extra_headers ? "" : RN)
-		);
+			(client->extra_headers ? "" : RN));
+
 		const ldf now_ts = us_get_now_monotonic();
 		if (client->extra_headers) {
-			_A_EVBUFFER_ADD_PRINTF(buf,
+			_A_EVBUFFER_ADD_PRINTF(
+				buf,
 				"X-UStreamer-Online: %s" RN
 				"X-UStreamer-Dropped: %u" RN
 				"X-UStreamer-Width: %u" RN
 				"X-UStreamer-Height: %u" RN
 				"X-UStreamer-Client-FPS: %u" RN
-				"X-UStreamer-Grab-Time: %.06Lf" RN
+				"X-UStreamer-Grab-Begin-Time: %.06Lf" RN
+				"X-UStreamer-Grab-End-Time: %.06Lf" RN
 				"X-UStreamer-Encode-Begin-Time: %.06Lf" RN
 				"X-UStreamer-Encode-End-Time: %.06Lf" RN
 				"X-UStreamer-Expose-Begin-Time: %.06Lf" RN
@@ -744,15 +741,15 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 				ex->frame->width,
 				ex->frame->height,
 				us_fpsi_get(client->fpsi, NULL),
-				ex->frame->grab_ts,
+				ex->frame->grab_begin_ts,
+				ex->frame->grab_end_ts,
 				ex->frame->encode_begin_ts,
 				ex->frame->encode_end_ts,
 				ex->expose_begin_ts,
 				ex->expose_cmp_ts,
 				ex->expose_end_ts,
 				now_ts,
-				now_ts - ex->frame->grab_ts
-			);
+				now_ts - ex->frame->grab_begin_ts);
 		}
 	}
 
@@ -765,7 +762,7 @@ static void _http_callback_stream_write(struct bufferevent *buf_event, void *v_c
 		ADD_ADVANCE_HEADERS;
 	}
 
-	assert(!bufferevent_write_buffer(buf_event, buf));
+	US_A(!bufferevent_write_buffer(buf_event, buf));
 	evbuffer_free(buf);
 
 	bufferevent_setcb(buf_event, NULL, NULL, _http_callback_stream_error, (void*)client);
@@ -797,7 +794,7 @@ static void _http_callback_stream_error(struct bufferevent *buf_event, short wha
 		run->stream_clients_count, client->hostport, client->id, reason);
 	free(reason);
 
-	struct evhttp_connection *conn = evhttp_request_get_connection(client->request);
+	struct evhttp_connection *conn = evhttp_request_get_connection(client->req);
 	US_DELETE(conn, evhttp_connection_free);
 
 	us_fpsi_destroy(client->fpsi);
@@ -814,7 +811,7 @@ static void _http_send_stream(us_server_s *server, bool stream_updated, bool fra
 	bool has_clients = true;
 
 	US_LIST_ITERATE(run->stream_clients, client, { // cppcheck-suppress constStatement
-		struct evhttp_connection *const conn = evhttp_request_get_connection(client->request);
+		struct evhttp_connection *const conn = evhttp_request_get_connection(client->req);
 		if (conn != NULL) {
 			// Фикс для бага WebKit. При включенной опции дропа одинаковых фреймов,
 			// WebKit отрисовывает последний фрейм в серии с некоторой задержкой,
@@ -858,29 +855,29 @@ static void _http_send_snapshot(us_server_s *server) {
 
 #	define ADD_TIME_HEADER(x_key, x_value) { \
 			US_SNPRINTF(header_buf, 255, "%.06Lf", x_value); \
-			_A_ADD_HEADER(request, x_key, header_buf); \
+			_A_ADD_HEADER(req, x_key, header_buf); \
 		}
 
 #	define ADD_UNSIGNED_HEADER(x_key, x_value) { \
 			US_SNPRINTF(header_buf, 255, "%u", x_value); \
-			_A_ADD_HEADER(request, x_key, header_buf); \
+			_A_ADD_HEADER(req, x_key, header_buf); \
 		}
 
 	us_fpsi_meta_s captured_meta;
 	us_fpsi_get(server->stream->run->http->captured_fpsi, &captured_meta);
 
 	US_LIST_ITERATE(server->run->snapshot_clients, client, { // cppcheck-suppress constStatement
-		struct evhttp_request *request = client->request;
+		struct evhttp_request *req = client->req;
 
 		const bool has_fresh_snapshot = (atomic_load(&server->stream->run->http->snapshot_requested) == 0);
-		const bool timed_out = (client->request_ts + US_MAX((uint)1, server->stream->error_delay * 3) < us_get_now_monotonic());
+		const bool timed_out = (client->req_ts + US_MAX((uint)1, server->stream->error_delay * 3) < us_get_now_monotonic());
 
 		if (has_fresh_snapshot || timed_out) {
 			us_frame_s *frame = ex->frame;
 			if (!captured_meta.online) {
 				if (blank == NULL) {
 					blank = us_blank_init();
-					us_blank_draw(blank, "< NO SIGNAL >", captured_meta.width, captured_meta.height);
+					us_blank_draw(blank, "< NO LIVE VIDEO >", captured_meta.width, captured_meta.height);
 				}
 				frame = blank->jpeg;
 			}
@@ -889,25 +886,26 @@ static void _http_send_snapshot(us_server_s *server) {
 			_A_EVBUFFER_NEW(buf);
 			_A_EVBUFFER_ADD(buf, (const void*)frame->data, frame->used);
 
-			_A_ADD_HEADER(request, "Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate, pre-check=0, post-check=0, max-age=0");
-			_A_ADD_HEADER(request, "Pragma", "no-cache");
-			_A_ADD_HEADER(request, "Expires", "Mon, 3 Jan 2000 12:34:56 GMT");
+			_A_ADD_HEADER(req, "Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate, pre-check=0, post-check=0, max-age=0");
+			_A_ADD_HEADER(req, "Pragma", "no-cache");
+			_A_ADD_HEADER(req, "Expires", "Mon, 3 Jan 2000 12:34:56 GMT");
 
 			char header_buf[256];
 
 			ADD_TIME_HEADER("X-Timestamp", us_get_now_real());
 
-			_A_ADD_HEADER(request, "X-UStreamer-Online",			us_bool_to_string(frame->online));
+			_A_ADD_HEADER(req, "X-UStreamer-Online",				us_bool_to_string(frame->online));
 			ADD_UNSIGNED_HEADER("X-UStreamer-Width",				frame->width);
 			ADD_UNSIGNED_HEADER("X-UStreamer-Height",				frame->height);
-			ADD_TIME_HEADER("X-UStreamer-Grab-Timestamp",			frame->grab_ts);
+			ADD_TIME_HEADER("X-UStreamer-Grab-Begin-Timestamp",		frame->grab_begin_ts);
+			ADD_TIME_HEADER("X-UStreamer-Grab-End-Timestamp",		frame->grab_end_ts);
 			ADD_TIME_HEADER("X-UStreamer-Encode-Begin-Timestamp",	frame->encode_begin_ts);
 			ADD_TIME_HEADER("X-UStreamer-Encode-End-Timestamp",		frame->encode_end_ts);
 			ADD_TIME_HEADER("X-UStreamer-Send-Timestamp",			us_get_now_monotonic());
 
-			_A_ADD_HEADER(request, "Content-Type", "image/jpeg");
+			_A_ADD_HEADER(req, "Content-Type", "image/jpeg");
 
-			evhttp_send_reply(request, HTTP_OK, "OK", buf);
+			evhttp_send_reply(req, HTTP_OK, "OK", buf);
 			evbuffer_free(buf);
 
 			US_LIST_REMOVE(server->run->snapshot_clients, client);
@@ -932,13 +930,15 @@ static void _http_refresher(int fd, short what, void *v_server) {
 	bool stream_updated = false;
 	bool frame_updated = false;
 
-	const int ri = us_ring_consumer_acquire(ring, 0);
-	if (ri >= 0) {
+	int ri;
+	while ((ri = us_ring_consumer_acquire(ring, 0)) >= 0) {
 		const us_frame_s *const frame = ring->items[ri];
 		frame_updated = _expose_frame(server, frame);
 		stream_updated = true;
 		us_ring_consumer_release(ring, ri);
-	} else if (ex->expose_end_ts + 1 < us_get_now_monotonic()) {
+	}
+
+	if (!stream_updated && (ex->expose_end_ts + 1 < us_get_now_monotonic())) {
 		_LOG_DEBUG("Repeating exposed ...");
 		ex->expose_begin_ts = us_get_now_monotonic();
 		ex->expose_cmp_ts = ex->expose_begin_ts;

src/ustreamer/http/server.h

@@ -38,7 +38,7 @@
 
 typedef struct {
 	struct us_server_sx		*server;
-	struct evhttp_request	*request;
+	struct evhttp_request	*req;
 
 	char	*key;
 	bool	extra_headers;
@@ -59,8 +59,8 @@ typedef struct {
 
 typedef struct {
 	struct us_server_sx		*server;
-	struct evhttp_request	*request;
-	ldf						request_ts;
+	struct evhttp_request	*req;
+	ldf						req_ts;
 
 	US_LIST_DECLARE;
 } us_snapshot_client_s;

src/ustreamer/http/static.c

@@ -26,7 +26,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <assert.h>
 
 #include <sys/stat.h>
 
@@ -36,17 +35,17 @@
 #include "path.h"
 
 
-char *us_find_static_file_path(const char *root_path, const char *request_path) {
+char *us_find_static_file_path(const char *root_path, const char *req_path) {
 	char *path = NULL;
 
-	char *const simplified_path = us_simplify_request_path(request_path);
+	char *const simplified_path = us_simplify_request_path(req_path);
 	if (simplified_path[0] == '\0') {
-		US_LOG_VERBOSE("HTTP: Invalid request path %s to static", request_path);
+		US_LOG_VERBOSE("HTTP: Invalid request path %s to static", req_path);
 		goto error;
 	}
 
 	US_CALLOC(path, strlen(root_path) + strlen(simplified_path) + 16); // + reserved for /index.html
-	assert(sprintf(path, "%s/%s", root_path, simplified_path) > 0);
+	US_A(sprintf(path, "%s/%s", root_path, simplified_path) > 0);
 
 	struct stat st;
 #	define LOAD_STAT { \

src/ustreamer/http/static.h

@@ -23,4 +23,4 @@
 #pragma once
 
 
-char *us_find_static_file_path(const char *root_path, const char *request_path);
+char *us_find_static_file_path(const char *root_path, const char *req_path);

src/ustreamer/http/systemd/systemd.c

@@ -23,7 +23,6 @@
 #include "systemd.h"
 
 #include <unistd.h>
-#include <assert.h>
 
 #include <event2/http.h>
 #include <event2/util.h>
@@ -47,7 +46,7 @@ evutil_socket_t us_evhttp_bind_systemd(struct evhttp *http) {
 	}
 	fd = SD_LISTEN_FDS_START;
 
-	assert(!evutil_make_socket_nonblocking(fd));
+	US_A(!evutil_make_socket_nonblocking(fd));
 
 	if (evhttp_accept_socket(http, fd) < 0) {
 		US_LOG_PERROR("HTTP: Can't evhttp_accept_socket() systemd socket");

src/ustreamer/http/tools.c

@@ -25,7 +25,6 @@
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>
-#include <assert.h>
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -54,8 +53,8 @@ evutil_socket_t us_evhttp_bind_unix(struct evhttp *http, const char *path, bool
 	addr.sun_family = AF_UNIX;
 
 	const evutil_socket_t fd = socket(AF_UNIX, SOCK_STREAM, 0);
-	assert(fd >= 0);
-	assert(!evutil_make_socket_nonblocking(fd));
+	US_A(fd >= 0);
+	US_A(!evutil_make_socket_nonblocking(fd));
 
 	if (rm && unlink(path) < 0) {
 		if (errno != ENOENT) {
@@ -82,27 +81,27 @@ evutil_socket_t us_evhttp_bind_unix(struct evhttp *http, const char *path, bool
 	return fd;
 }
 
-const char *us_evhttp_get_header(struct evhttp_request *request, const char *key) {
-	return evhttp_find_header(evhttp_request_get_input_headers(request), key);
+const char *us_evhttp_get_header(struct evhttp_request *req, const char *key) {
+	return evhttp_find_header(evhttp_request_get_input_headers(req), key);
 }
 
-char *us_evhttp_get_hostport(struct evhttp_request *request) {
+char *us_evhttp_get_hostport(struct evhttp_request *req) {
 	char *addr = NULL;
 	unsigned short port = 0;
-	struct evhttp_connection *conn = evhttp_request_get_connection(request);
+	struct evhttp_connection *conn = evhttp_request_get_connection(req);
 	if (conn != NULL) {
 		char *peer;
 		evhttp_connection_get_peer(conn, &peer, &port);
 		addr = us_strdup(peer);
 	}
 
-	const char *xff = us_evhttp_get_header(request, "X-Forwarded-For");
+	const char *xff = us_evhttp_get_header(req, "X-Forwarded-For");
 	if (xff != NULL) {
 		US_DELETE(addr, free);
-		assert((addr = strndup(xff, 1024)) != NULL);
-		for (uint index = 0; addr[index]; ++index) {
-			if (addr[index] == ',') {
-				addr[index] = '\0';
+		US_A((addr = strndup(xff, 1024)) != NULL);
+		for (uint i = 0; addr[i]; ++i) {
+			if (addr[i] == ',') {
+				addr[i] = '\0';
 				break;
 			}
 		}

src/ustreamer/http/tools.h

@@ -32,8 +32,8 @@
 
 evutil_socket_t us_evhttp_bind_unix(struct evhttp *http, const char *path, bool rm, mode_t mode);
 
-const char *us_evhttp_get_header(struct evhttp_request *request, const char *key);
-char *us_evhttp_get_hostport(struct evhttp_request *request);
+const char *us_evhttp_get_header(struct evhttp_request *req, const char *key);
+char *us_evhttp_get_hostport(struct evhttp_request *req);
 
 bool us_evkeyvalq_get_true(struct evkeyvalq *params, const char *key);
 char *us_evkeyvalq_get_string(struct evkeyvalq *params, const char *key);

src/ustreamer/m2m.c

@@ -28,7 +28,6 @@
 #include <fcntl.h>
 #include <poll.h>
 #include <errno.h>
-#include <assert.h>
 
 #include <sys/mman.h>
 
@@ -42,30 +41,44 @@
 
 
 static us_m2m_encoder_s *_m2m_encoder_init(
-	const char *name, const char *path, uint output_format,
-	uint bitrate, uint gop, uint quality, bool allow_dma);
+	const char *name,
+	const char *path,
+	uint out_format,
+	uint bitrate,
+	uint gop,
+	uint quality,
+	bool allow_dma,
+	bool boost);
 
 static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame);
 
 static int _m2m_encoder_init_buffers(
-	us_m2m_encoder_s *enc, const char *name, enum v4l2_buf_type type,
-	us_m2m_buffer_s **bufs_ptr, uint *n_bufs_ptr, bool dma);
+	us_m2m_encoder_s *enc,
+	const char *name,
+	enum v4l2_buf_type type,
+	us_m2m_buffer_s **bufs_ptr,
+	uint *n_bufs_ptr,
+	bool dma);
 
 static void _m2m_encoder_cleanup(us_m2m_encoder_s *enc);
 
-static int _m2m_encoder_compress_raw(us_m2m_encoder_s *enc, const us_frame_s *src, us_frame_s *dest, bool force_key);
+static int _m2m_encoder_compress_raw(
+	us_m2m_encoder_s *enc,
+	const us_frame_s *src,
+	us_frame_s *dest,
+	bool force_key);
 
 
-#define _LOG_ERROR(x_msg, ...)	US_LOG_ERROR("%s: " x_msg, enc->name, ##__VA_ARGS__)
-#define _LOG_PERROR(x_msg, ...)	US_LOG_PERROR("%s: " x_msg, enc->name, ##__VA_ARGS__)
+#define _LOG_ERROR(x_msg, ...)		US_LOG_ERROR("%s: " x_msg, enc->name, ##__VA_ARGS__)
+#define _LOG_PERROR(x_msg, ...)		US_LOG_PERROR("%s: " x_msg, enc->name, ##__VA_ARGS__)
 #define _LOG_INFO(x_msg, ...)		US_LOG_INFO("%s: " x_msg, enc->name, ##__VA_ARGS__)
 #define _LOG_VERBOSE(x_msg, ...)	US_LOG_VERBOSE("%s: " x_msg, enc->name, ##__VA_ARGS__)
-#define _LOG_DEBUG(x_msg, ...)	US_LOG_DEBUG("%s: " x_msg, enc->name, ##__VA_ARGS__)
+#define _LOG_DEBUG(x_msg, ...)		US_LOG_DEBUG("%s: " x_msg, enc->name, ##__VA_ARGS__)
 
 
-us_m2m_encoder_s *us_m2m_h264_encoder_init(const char *name, const char *path, uint bitrate, uint gop) {
+us_m2m_encoder_s *us_m2m_h264_encoder_init(const char *name, const char *path, uint bitrate, uint gop, bool boost) {
 	bitrate *= 1000; // From Kbps
-	return _m2m_encoder_init(name, path, V4L2_PIX_FMT_H264, bitrate, gop, 0, true);
+	return _m2m_encoder_init(name, path, V4L2_PIX_FMT_H264, bitrate, gop, 0, true, boost);
 }
 
 us_m2m_encoder_s *us_m2m_mjpeg_encoder_init(const char *name, const char *path, uint quality) {
@@ -75,13 +88,13 @@ us_m2m_encoder_s *us_m2m_mjpeg_encoder_init(const char *name, const char *path,
 	double bitrate = log10(quality) * (b_max - b_min) / 2 + b_min;
 	bitrate = step * round(bitrate / step);
 	bitrate *= 1000; // From Kbps
-	assert(bitrate > 0);
-	return _m2m_encoder_init(name, path, V4L2_PIX_FMT_MJPEG, bitrate, 0, 0, true);
+	US_A(bitrate > 0);
+	return _m2m_encoder_init(name, path, V4L2_PIX_FMT_MJPEG, bitrate, 0, 0, true, false);
 }
 
 us_m2m_encoder_s *us_m2m_jpeg_encoder_init(const char *name, const char *path, uint quality) {
 	// FIXME: DMA не работает
-	return _m2m_encoder_init(name, path, V4L2_PIX_FMT_JPEG, 0, 0, quality, false);
+	return _m2m_encoder_init(name, path, V4L2_PIX_FMT_JPEG, 0, 0, quality, false, false);
 }
 
 void us_m2m_encoder_destroy(us_m2m_encoder_s *enc) {
@@ -95,8 +108,8 @@ void us_m2m_encoder_destroy(us_m2m_encoder_s *enc) {
 int us_m2m_encoder_compress(us_m2m_encoder_s *enc, const us_frame_s *src, us_frame_s *dest, bool force_key) {
 	us_m2m_encoder_runtime_s *const run = enc->run;
 
-	uint dest_format = enc->output_format;
-	switch (enc->output_format) {
+	uint dest_format = enc->out_format;
+	switch (enc->out_format) {
 		case V4L2_PIX_FMT_JPEG:
 			force_key = false;
 			// fall through
@@ -138,9 +151,15 @@ int us_m2m_encoder_compress(us_m2m_encoder_s *enc, const us_frame_s *src, us_fra
 }
 
 static us_m2m_encoder_s *_m2m_encoder_init(
-	const char *name, const char *path, uint output_format,
-	uint bitrate, uint gop, uint quality, bool allow_dma) {
-
+	const char *name,
+	const char *path,
+	uint out_format,
+	uint bitrate,
+	uint gop,
+	uint quality,
+	bool allow_dma,
+	bool boost
+) {
 	US_LOG_INFO("%s: Initializing encoder ...", name);
 
 	us_m2m_encoder_runtime_s *run;
@@ -152,15 +171,16 @@ static us_m2m_encoder_s *_m2m_encoder_init(
 	US_CALLOC(enc, 1);
 	enc->name = us_strdup(name);
 	if (path == NULL) {
-		enc->path = us_strdup(output_format == V4L2_PIX_FMT_JPEG ? "/dev/video31" : "/dev/video11");
+		enc->path = us_strdup(out_format == V4L2_PIX_FMT_JPEG ? "/dev/video31" : "/dev/video11");
 	} else {
 		enc->path = us_strdup(path);
 	}
-	enc->output_format = output_format;
+	enc->out_format = out_format;
 	enc->bitrate = bitrate;
 	enc->gop = gop;
 	enc->quality = quality;
 	enc->allow_dma = allow_dma;
+	enc->boost = boost;
 	enc->run = run;
 	return enc;
 }
@@ -179,7 +199,7 @@ static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame)
 	if (
 		run->p_width == frame->width
 		&& run->p_height == frame->height
-		&& run->p_input_format == frame->format
+		&& run->p_in_format == frame->format
 		&& run->p_stride == frame->stride
 		&& run->p_dma == dma
 	) {
@@ -188,18 +208,18 @@ static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame)
 
 	_LOG_INFO("Configuring encoder: DMA=%d ...", dma);
 
-	_LOG_DEBUG("Encoder changes: width=%u->%u, height=%u->%u, input_format=%u->%u, stride=%u->%u, dma=%u->%u",
-		run->p_width, frame->width,
-		run->p_height, frame->height,
-		run->p_input_format, frame->format,
-		run->p_stride, frame->stride,
-		run->p_dma, dma);
+	_LOG_DEBUG("Encoder changes: width=%u->%u, height=%u->%u, in_format=%u->%u, stride=%u->%u, dma=%u->%u",
+		run->p_width,		frame->width,
+		run->p_height,		frame->height,
+		run->p_in_format,	frame->format,
+		run->p_stride,		frame->stride,
+		run->p_dma,			dma);
 
 	_m2m_encoder_cleanup(enc);
 
 	run->p_width = frame->width;
 	run->p_height = frame->height;
-	run->p_input_format = frame->format;
+	run->p_in_format = frame->format;
 	run->p_stride = frame->stride;
 	run->p_dma = dma;
 
@@ -217,21 +237,25 @@ static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame)
 			_LOG_DEBUG("Configuring option " #x_cid " ..."); \
 			_E_XIOCTL(VIDIOC_S_CTRL, &m_ctl, "Can't set option " #x_cid); \
 		}
-	if (enc->output_format == V4L2_PIX_FMT_H264) {
+	if (enc->out_format == V4L2_PIX_FMT_H264) {
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_BITRATE,				enc->bitrate);
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_I_PERIOD,		enc->gop);
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_PROFILE,		V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE);
 		if (run->p_width * run->p_height <= 1920 * 1080) { // https://forums.raspberrypi.com/viewtopic.php?t=291447#p1762296
-			SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_LEVEL,		V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
+			if (enc->boost) {
+				SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_LEVEL, V4L2_MPEG_VIDEO_H264_LEVEL_4_2);
+			} else {
+				SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_LEVEL, V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
+			}
 		} else {
 			SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_LEVEL,		V4L2_MPEG_VIDEO_H264_LEVEL_5_1);
 		}
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER,	1);
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_MIN_QP,			16);
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_H264_MAX_QP,			32);
-	} else if (enc->output_format == V4L2_PIX_FMT_MJPEG) {
+	} else if (enc->out_format == V4L2_PIX_FMT_MJPEG) {
 		SET_OPTION(V4L2_CID_MPEG_VIDEO_BITRATE,				enc->bitrate);
-	} else if (enc->output_format == V4L2_PIX_FMT_JPEG) {
+	} else if (enc->out_format == V4L2_PIX_FMT_JPEG) {
 		SET_OPTION(V4L2_CID_JPEG_COMPRESSION_QUALITY,		enc->quality);
 	}
 #	undef SET_OPTION
@@ -241,7 +265,7 @@ static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame)
 		fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
 		fmt.fmt.pix_mp.width = run->p_width;
 		fmt.fmt.pix_mp.height = run->p_height;
-		fmt.fmt.pix_mp.pixelformat = run->p_input_format;
+		fmt.fmt.pix_mp.pixelformat = run->p_in_format;
 		fmt.fmt.pix_mp.field = V4L2_FIELD_ANY;
 		fmt.fmt.pix_mp.colorspace = V4L2_COLORSPACE_JPEG; // FIXME: Wrong colors
 		fmt.fmt.pix_mp.num_planes = 1;
@@ -255,31 +279,34 @@ static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame)
 		fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
 		fmt.fmt.pix_mp.width = run->p_width;
 		fmt.fmt.pix_mp.height = run->p_height;
-		fmt.fmt.pix_mp.pixelformat = enc->output_format;
+		fmt.fmt.pix_mp.pixelformat = enc->out_format;
 		fmt.fmt.pix_mp.field = V4L2_FIELD_ANY;
 		fmt.fmt.pix_mp.colorspace = V4L2_COLORSPACE_DEFAULT;
 		fmt.fmt.pix_mp.num_planes = 1;
 		// fmt.fmt.pix_mp.plane_fmt[0].bytesperline = 0;
-		if (enc->output_format == V4L2_PIX_FMT_H264) {
+		if (enc->out_format == V4L2_PIX_FMT_H264) {
 			// https://github.com/pikvm/ustreamer/issues/169
 			// https://github.com/raspberrypi/linux/pull/5232
 			fmt.fmt.pix_mp.plane_fmt[0].sizeimage = (1024 + 512) << 10; // 1.5Mb
 		}
 		_LOG_DEBUG("Configuring OUTPUT format ...");
 		_E_XIOCTL(VIDIOC_S_FMT, &fmt, "Can't set OUTPUT format");
-		if (fmt.fmt.pix_mp.pixelformat != enc->output_format) {
+		if (fmt.fmt.pix_mp.pixelformat != enc->out_format) {
 			char fourcc_str[8];
 			_LOG_ERROR("The OUTPUT format can't be configured as %s",
-				us_fourcc_to_string(enc->output_format, fourcc_str, 8));
+				us_fourcc_to_string(enc->out_format, fourcc_str, 8));
 			_LOG_ERROR("In case of Raspberry Pi, try to append 'start_x=1' to /boot/config.txt");
 			goto error;
 		}
 	}
 
-	if (run->p_width * run->p_height <= 1280 * 720) {
+	if (
+		(run->p_width * run->p_height <= 1280 * 720)
+		|| ((enc->out_format == V4L2_PIX_FMT_H264) && enc->boost)
+	) {
 		// H264 требует каких-то лимитов. Больше 30 не поддерживается, а при 0
 		// через какое-то время начинает производить некорректные фреймы.
-		// Если же привысить fps, то резко увеличивается время кодирования.
+		// Если же превысить fps, то резко увеличивается время кодирования.
 		run->fps_limit = 60;
 	} else {
 		run->fps_limit = 30;
@@ -298,14 +325,22 @@ static void _m2m_encoder_ensure(us_m2m_encoder_s *enc, const us_frame_s *frame)
 	}
 
 	if (_m2m_encoder_init_buffers(
-		enc, (dma ? "INPUT-DMA" : "INPUT"), V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
-		&run->input_bufs, &run->n_input_bufs, dma
+		enc,
+		(dma ? "INPUT-DMA" : "INPUT"),
+		V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
+		&run->in_bufs,
+		&run->n_in_bufs,
+		dma
 	) < 0) {
 		goto error;
 	}
 	if (_m2m_encoder_init_buffers(
-		enc, "OUTPUT", V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
-		&run->output_bufs, &run->n_output_bufs, false
+		enc,
+		"OUTPUT",
+		V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
+		&run->out_bufs,
+		&run->n_out_bufs,
+		false
 	) < 0) {
 		goto error;
 	}
@@ -330,9 +365,13 @@ error:
 }
 
 static int _m2m_encoder_init_buffers(
-	us_m2m_encoder_s *enc, const char *name, enum v4l2_buf_type type,
-	us_m2m_buffer_s **bufs_ptr, uint *n_bufs_ptr, bool dma) {
-
+	us_m2m_encoder_s *enc,
+	const char *name,
+	enum v4l2_buf_type type,
+	us_m2m_buffer_s **bufs_ptr,
+	uint *n_bufs_ptr,
+	bool dma
+) {
 	us_m2m_encoder_runtime_s *const run = enc->run;
 
 	_LOG_DEBUG("Initializing %s buffers ...", name);
@@ -377,7 +416,7 @@ static int _m2m_encoder_init_buffers(
 			_LOG_PERROR("Can't map %s buffer=%u", name, *n_bufs_ptr);
 			goto error;
 		}
-		assert((*bufs_ptr)[*n_bufs_ptr].data != NULL);
+		US_A((*bufs_ptr)[*n_bufs_ptr].data != NULL);
 		(*bufs_ptr)[*n_bufs_ptr].allocated = plane.length;
 
 		_LOG_DEBUG("Queuing %s buffer=%u ...", name, *n_bufs_ptr);
@@ -412,11 +451,11 @@ static void _m2m_encoder_cleanup(us_m2m_encoder_s *enc) {
 #	define DELETE_BUFFERS(x_name, x_target) { \
 		if (run->x_target##_bufs != NULL) { \
 			say = true; \
-			for (uint m_index = 0; m_index < run->n_##x_target##_bufs; ++m_index) { \
-				us_m2m_buffer_s *m_buf = &run->x_target##_bufs[m_index]; \
+			for (uint m_i = 0; m_i < run->n_##x_target##_bufs; ++m_i) { \
+				us_m2m_buffer_s *m_buf = &run->x_target##_bufs[m_i]; \
 				if (m_buf->allocated > 0 && m_buf->data != NULL) { \
 					if (munmap(m_buf->data, m_buf->allocated) < 0) { \
-						_LOG_PERROR("Can't unmap %s buffer=%u", #x_name, m_index); \
+						_LOG_PERROR("Can't unmap %s buffer=%u", #x_name, m_i); \
 					} \
 				} \
 			} \
@@ -424,8 +463,8 @@ static void _m2m_encoder_cleanup(us_m2m_encoder_s *enc) {
 		} \
 		run->n_##x_target##_bufs = 0; \
 	}
-	DELETE_BUFFERS("OUTPUT", output);
-	DELETE_BUFFERS("INPUT", input);
+	DELETE_BUFFERS("OUTPUT", out);
+	DELETE_BUFFERS("INPUT", in);
 #	undef DELETE_BUFFERS
 
 	if (run->fd >= 0) {
@@ -444,10 +483,15 @@ static void _m2m_encoder_cleanup(us_m2m_encoder_s *enc) {
 	}
 }
 
-static int _m2m_encoder_compress_raw(us_m2m_encoder_s *enc, const us_frame_s *src, us_frame_s *dest, bool force_key) {
+static int _m2m_encoder_compress_raw(
+	us_m2m_encoder_s *enc,
+	const us_frame_s *src,
+	us_frame_s *dest,
+	bool force_key
+) {
 	us_m2m_encoder_runtime_s *const run = enc->run;
 
-	assert(run->ready);
+	US_A(run->ready);
 
 	if (force_key) {
 		struct v4l2_control ctl = {0};
@@ -457,28 +501,28 @@ static int _m2m_encoder_compress_raw(us_m2m_encoder_s *enc, const us_frame_s *sr
 		_E_XIOCTL(VIDIOC_S_CTRL, &ctl, "Can't force keyframe");
 	}
 
-	struct v4l2_buffer input_buf = {0};
-	struct v4l2_plane input_plane = {0};
-	input_buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
-	input_buf.length = 1;
-	input_buf.m.planes = &input_plane;
+	struct v4l2_buffer in_buf = {0};
+	struct v4l2_plane in_plane = {0};
+	in_buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+	in_buf.length = 1;
+	in_buf.m.planes = &in_plane;
 
 	if (run->p_dma) {
-		input_buf.index = 0;
-		input_buf.memory = V4L2_MEMORY_DMABUF;
-		input_buf.field = V4L2_FIELD_NONE;
-		input_plane.m.fd = src->dma_fd;
-		_LOG_DEBUG("Using INPUT-DMA buffer=%u", input_buf.index);
+		in_buf.index = 0;
+		in_buf.memory = V4L2_MEMORY_DMABUF;
+		in_buf.field = V4L2_FIELD_NONE;
+		in_plane.m.fd = src->dma_fd;
+		_LOG_DEBUG("Using INPUT-DMA buffer=%u", in_buf.index);
 	} else {
-		input_buf.memory = V4L2_MEMORY_MMAP;
+		in_buf.memory = V4L2_MEMORY_MMAP;
 		_LOG_DEBUG("Grabbing INPUT buffer ...");
-		_E_XIOCTL(VIDIOC_DQBUF, &input_buf, "Can't grab INPUT buffer");
-		if (input_buf.index >= run->n_input_bufs) {
+		_E_XIOCTL(VIDIOC_DQBUF, &in_buf, "Can't grab INPUT buffer");
+		if (in_buf.index >= run->n_in_bufs) {
 			_LOG_ERROR("V4L2 error: grabbed invalid INPUT: buffer=%u, n_bufs=%u",
-				input_buf.index, run->n_input_bufs);
+				in_buf.index, run->n_in_bufs);
 			goto error;
 		}
-		_LOG_DEBUG("Grabbed INPUT buffer=%u", input_buf.index);
+		_LOG_DEBUG("Grabbed INPUT buffer=%u", in_buf.index);
 	}
 
 	const u64 now_ts = us_get_now_monotonic_u64();
@@ -487,21 +531,21 @@ static int _m2m_encoder_compress_raw(us_m2m_encoder_s *enc, const us_frame_s *sr
 		.tv_usec = now_ts % 1000000,
 	};
 
-	input_buf.timestamp.tv_sec = ts.tv_sec;
-	input_buf.timestamp.tv_usec = ts.tv_usec;
-	input_plane.bytesused = src->used;
-	input_plane.length = src->used;
+	in_buf.timestamp.tv_sec = ts.tv_sec;
+	in_buf.timestamp.tv_usec = ts.tv_usec;
+	in_plane.bytesused = src->used;
+	in_plane.length = src->used;
 	if (!run->p_dma) {
-		memcpy(run->input_bufs[input_buf.index].data, src->data, src->used);
+		memcpy(run->in_bufs[in_buf.index].data, src->data, src->used);
 	}
 
-	const char *input_name = (run->p_dma ? "INPUT-DMA" : "INPUT");
+	const char *in_name = (run->p_dma ? "INPUT-DMA" : "INPUT");
 
-	_LOG_DEBUG("Sending%s %s buffer ...", (!run->p_dma ? " (releasing)" : ""), input_name);
-	_E_XIOCTL(VIDIOC_QBUF, &input_buf, "Can't send %s buffer", input_name);
+	_LOG_DEBUG("Sending%s %s buffer ...", (!run->p_dma ? " (releasing)" : ""), in_name);
+	_E_XIOCTL(VIDIOC_QBUF, &in_buf, "Can't send %s buffer", in_name);
 
 	// Для не-DMA отправка буфера по факту являтся освобождением этого буфера
-	bool input_released = !run->p_dma;
+	bool in_released = !run->p_dma;
 
 	// https://github.com/pikvm/ustreamer/issues/253
 	// За секунду точно должно закодироваться.
@@ -521,37 +565,37 @@ static int _m2m_encoder_compress_raw(us_m2m_encoder_s *enc, const us_frame_s *sr
 		}
 
 		if (enc_poll.revents & POLLIN) {
-			if (!input_released) {
-				_LOG_DEBUG("Releasing %s buffer=%u ...", input_name, input_buf.index);
-				_E_XIOCTL(VIDIOC_DQBUF, &input_buf, "Can't release %s buffer=%u",
-					input_name, input_buf.index);
-				input_released = true;
+			if (!in_released) {
+				_LOG_DEBUG("Releasing %s buffer=%u ...", in_name, in_buf.index);
+				_E_XIOCTL(VIDIOC_DQBUF, &in_buf, "Can't release %s buffer=%u",
+					in_name, in_buf.index);
+				in_released = true;
 			}
 
-			struct v4l2_buffer output_buf = {0};
-			struct v4l2_plane output_plane = {0};
-			output_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
-			output_buf.memory = V4L2_MEMORY_MMAP;
-			output_buf.length = 1;
-			output_buf.m.planes = &output_plane;
+			struct v4l2_buffer out_buf = {0};
+			struct v4l2_plane out_plane = {0};
+			out_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+			out_buf.memory = V4L2_MEMORY_MMAP;
+			out_buf.length = 1;
+			out_buf.m.planes = &out_plane;
 			_LOG_DEBUG("Fetching OUTPUT buffer ...");
-			_E_XIOCTL(VIDIOC_DQBUF, &output_buf, "Can't fetch OUTPUT buffer");
+			_E_XIOCTL(VIDIOC_DQBUF, &out_buf, "Can't fetch OUTPUT buffer");
 
 			bool done = false;
-			if (ts.tv_sec != output_buf.timestamp.tv_sec || ts.tv_usec != output_buf.timestamp.tv_usec) {
+			if (ts.tv_sec != out_buf.timestamp.tv_sec || ts.tv_usec != out_buf.timestamp.tv_usec) {
 				// Енкодер первый раз может выдать буфер с мусором и нулевым таймстампом,
 				// так что нужно убедиться, что мы читаем выходной буфер, соответствующий
 				// входному (с тем же таймстампом).
 				_LOG_DEBUG("Need to retry OUTPUT buffer due timestamp mismatch");
 			} else {
-				us_frame_set_data(dest, run->output_bufs[output_buf.index].data, output_plane.bytesused);
-				dest->key = output_buf.flags & V4L2_BUF_FLAG_KEYFRAME;
+				us_frame_set_data(dest, run->out_bufs[out_buf.index].data, out_plane.bytesused);
+				dest->key = out_buf.flags & V4L2_BUF_FLAG_KEYFRAME;
 				dest->gop = enc->gop;
 				done = true;
 			}
 
-			_LOG_DEBUG("Releasing OUTPUT buffer=%u ...", output_buf.index);
-			_E_XIOCTL(VIDIOC_QBUF, &output_buf, "Can't release OUTPUT buffer=%u", output_buf.index);
+			_LOG_DEBUG("Releasing OUTPUT buffer=%u ...", out_buf.index);
+			_E_XIOCTL(VIDIOC_QBUF, &out_buf, "Can't release OUTPUT buffer=%u", out_buf.index);
 
 			if (done) {
 				break;

src/ustreamer/m2m.h

@@ -34,14 +34,14 @@ typedef struct {
 typedef struct {
 	int				fd;
 	uint			fps_limit;
-	us_m2m_buffer_s	*input_bufs;
-	uint			n_input_bufs;
-	us_m2m_buffer_s	*output_bufs;
-	uint			n_output_bufs;
+	us_m2m_buffer_s	*in_bufs;
+	uint			n_in_bufs;
+	us_m2m_buffer_s	*out_bufs;
+	uint			n_out_bufs;
 
 	uint	p_width;
 	uint	p_height;
-	uint	p_input_format;
+	uint	p_in_format;
 	uint	p_stride;
 	bool	p_dma;
 
@@ -53,17 +53,18 @@ typedef struct {
 typedef struct {
 	char	*name;
 	char	*path;
-	uint	output_format;
+	uint	out_format;
 	uint	bitrate;
 	uint	gop;
 	uint	quality;
 	bool	allow_dma;
+	bool	boost;
 
 	us_m2m_encoder_runtime_s *run;
 } us_m2m_encoder_s;
 
 
-us_m2m_encoder_s *us_m2m_h264_encoder_init(const char *name, const char *path, uint bitrate, uint gop);
+us_m2m_encoder_s *us_m2m_h264_encoder_init(const char *name, const char *path, uint bitrate, uint gop, bool boost);
 us_m2m_encoder_s *us_m2m_mjpeg_encoder_init(const char *name, const char *path, uint quality);
 us_m2m_encoder_s *us_m2m_jpeg_encoder_init(const char *name, const char *path, uint quality);
 void us_m2m_encoder_destroy(us_m2m_encoder_s *enc);

src/ustreamer/main.c

@@ -46,10 +46,10 @@ static us_server_s	*_g_server = NULL;
 
 static void _block_thread_signals(void) {
 	sigset_t mask;
-	assert(!sigemptyset(&mask));
-	assert(!sigaddset(&mask, SIGINT));
-	assert(!sigaddset(&mask, SIGTERM));
-	assert(!pthread_sigmask(SIG_BLOCK, &mask, NULL));
+	US_A(!sigemptyset(&mask));
+	US_A(!sigaddset(&mask, SIGINT));
+	US_A(!sigaddset(&mask, SIGTERM));
+	US_A(!pthread_sigmask(SIG_BLOCK, &mask, NULL));
 }
 
 static void *_stream_loop_thread(void *arg) {
@@ -77,19 +77,19 @@ static void _signal_handler(int signum) {
 }
 
 int main(int argc, char *argv[]) {
-	assert(argc >= 0);
+	US_A(argc >= 0);
 	int exit_code = 0;
 
 	US_LOGGING_INIT;
 	US_THREAD_RENAME("main");
 
-	us_options_s *options = us_options_init(argc, argv);
+	us_options_s *opts = us_options_init(argc, argv);
 	us_capture_s *cap = us_capture_init();
 	us_encoder_s *enc = us_encoder_init();
 	_g_stream = us_stream_init(cap, enc);
 	_g_server = us_server_init(_g_stream);
 
-	if ((exit_code = options_parse(options, cap, enc, _g_stream, _g_server)) == 0) {
+	if ((exit_code = us_options_parse(opts, cap, enc, _g_stream, _g_server)) == 0) {
 		us_stream_update_blank(_g_stream, cap);
 #		ifdef WITH_GPIO
 		us_gpio_init();
@@ -120,7 +120,7 @@ int main(int argc, char *argv[]) {
 	us_stream_destroy(_g_stream);
 	us_encoder_destroy(enc);
 	us_capture_destroy(cap);
-	us_options_destroy(options);
+	us_options_destroy(opts);
 
 	if (exit_code == 0) {
 		US_LOG_INFO("Bye-bye");

src/ustreamer/options.c

@@ -22,6 +22,35 @@
 
 #include "options.h"
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#include <limits.h>
+#include <getopt.h>
+#include <errno.h>
+
+#include "../libs/types.h"
+#include "../libs/const.h"
+#include "../libs/tools.h"
+#include "../libs/logging.h"
+#include "../libs/process.h"
+#include "../libs/frame.h"
+#include "../libs/memsink.h"
+#include "../libs/options.h"
+#include "../libs/capture.h"
+#ifdef WITH_V4P
+#	include "../libs/drm/drm.h"
+#endif
+
+#include "encoder.h"
+#include "stream.h"
+#include "http/server.h"
+#ifdef WITH_GPIO
+#	include "gpio/gpio.h"
+#endif
+
 
 enum _US_OPT_VALUES {
 	_O_DEVICE = 'd',
@@ -100,6 +129,7 @@ enum _US_OPT_VALUES {
 	_O_H264_BITRATE,
 	_O_H264_GOP,
 	_O_H264_M2M_DEVICE,
+	_O_H264_BOOST,
 #	undef ADD_SINK
 
 #	ifdef WITH_V4P
@@ -114,9 +144,10 @@ enum _US_OPT_VALUES {
 	_O_GPIO_HAS_HTTP_CLIENTS,
 #	endif
 
-#	ifdef HAS_PDEATHSIG
+#	ifdef WITH_PDEATHSIG
 	_O_EXIT_ON_PARENT_DEATH,
 #	endif
+	_O_EXIT_ON_DEVICE_ERROR,
 	_O_EXIT_ON_NO_CLIENTS,
 #	ifdef WITH_SETPROCTITLE
 	_O_PROCESS_NAME_PREFIX,
@@ -138,7 +169,7 @@ static const struct option _LONG_OPTS[] = {
 	{"input",					required_argument,	NULL,	_O_INPUT},
 	{"resolution",				required_argument,	NULL,	_O_RESOLUTION},
 	{"format",					required_argument,	NULL,	_O_FORMAT},
-	{"format-swap-rgb",			required_argument,	NULL,	_O_FORMAT_SWAP_RGB},
+	{"format-swap-rgb",			no_argument,		NULL,	_O_FORMAT_SWAP_RGB},
 	{"tv-standard",				required_argument,	NULL,	_O_TV_STANDARD},
 	{"io-method",				required_argument,	NULL,	_O_IO_METHOD},
 	{"desired-fps",				required_argument,	NULL,	_O_DESIRED_FPS},
@@ -205,6 +236,7 @@ static const struct option _LONG_OPTS[] = {
 	{"h264-bitrate",			required_argument,	NULL,	_O_H264_BITRATE},
 	{"h264-gop",				required_argument,	NULL,	_O_H264_GOP},
 	{"h264-m2m-device",			required_argument,	NULL,	_O_H264_M2M_DEVICE},
+	{"h264-boost",				no_argument,		NULL,	_O_H264_BOOST},
 	// Compatibility
 	{"sink",					required_argument,	NULL,	_O_JPEG_SINK},
 	{"sink-mode",				required_argument,	NULL,	_O_JPEG_SINK_MODE},
@@ -224,9 +256,10 @@ static const struct option _LONG_OPTS[] = {
 	{"gpio-has-http-clients",	required_argument,	NULL,	_O_GPIO_HAS_HTTP_CLIENTS},
 #	endif
 
-#	ifdef HAS_PDEATHSIG
+#	ifdef WITH_PDEATHSIG
 	{"exit-on-parent-death",	no_argument,		NULL,	_O_EXIT_ON_PARENT_DEATH},
 #	endif
+	{"exit-on-device-error",	no_argument,		NULL,	_O_EXIT_ON_DEVICE_ERROR},
 	{"exit-on-no-clients",		required_argument,	NULL,	_O_EXIT_ON_NO_CLIENTS},
 #	ifdef WITH_SETPROCTITLE
 	{"process-name-prefix",		required_argument,	NULL,	_O_PROCESS_NAME_PREFIX},
@@ -248,53 +281,65 @@ static const struct option _LONG_OPTS[] = {
 };
 
 
-static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited);
+static int _parse_resolution(const char *str, uint *width, uint *height, bool limited);
 static int _check_instance_id(const char *str);
 
 static void _features(void);
-static void _help(FILE *fp, const us_capture_s *cap, const us_encoder_s *enc, const us_stream_s *stream, const us_server_s *server);
+
+static void _help(
+	FILE *fp,
+	const us_capture_s *cap,
+	const us_encoder_s *enc,
+	const us_stream_s *stream,
+	const us_server_s *server);
 
 
-us_options_s *us_options_init(unsigned argc, char *argv[]) {
-	us_options_s *options;
-	US_CALLOC(options, 1);
-	options->argc = argc;
-	options->argv = argv;
+us_options_s *us_options_init(uint argc, char *argv[]) {
+	us_options_s *opts;
+	US_CALLOC(opts, 1);
+	opts->argc = argc;
+	opts->argv = argv;
 
-	US_CALLOC(options->argv_copy, argc);
-	for (unsigned index = 0; index < argc; ++index) {
-		options->argv_copy[index] = us_strdup(argv[index]);
+	US_CALLOC(opts->argv_copy, argc);
+	for (uint i = 0; i < argc; ++i) {
+		opts->argv_copy[i] = us_strdup(argv[i]);
 	}
-	return options;
+	return opts;
 }
 
-void us_options_destroy(us_options_s *options) {
-	US_DELETE(options->jpeg_sink, us_memsink_destroy);
-	US_DELETE(options->raw_sink, us_memsink_destroy);
-	US_DELETE(options->h264_sink, us_memsink_destroy);
+void us_options_destroy(us_options_s *opts) {
+	US_DELETE(opts->jpeg_sink, us_memsink_destroy);
+	US_DELETE(opts->raw_sink, us_memsink_destroy);
+	US_DELETE(opts->h264_sink, us_memsink_destroy);
 #	ifdef WITH_V4P
-	US_DELETE(options->drm, us_drm_destroy);
+	US_DELETE(opts->drm, us_drm_destroy);
 #	endif
 
-	for (unsigned index = 0; index < options->argc; ++index) {
-		free(options->argv_copy[index]);
+	for (uint i = 0; i < opts->argc; ++i) {
+		free(opts->argv_copy[i]);
 	}
-	free(options->argv_copy);
+	free(opts->argv_copy);
 
-	free(options);
+	free(opts);
 }
 
 
-int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, us_stream_s *stream, us_server_s *server) {
+int us_options_parse(
+	us_options_s *opts,
+	us_capture_s *cap,
+	us_encoder_s *enc,
+	us_stream_s *stream,
+	us_server_s *server
+) {
 #	define OPT_SET(x_dest, x_value) { \
 			x_dest = x_value; \
 			break; \
 		}
 
 #	define OPT_NUMBER(x_name, x_dest, x_min, x_max, x_base) { \
-			errno = 0; char *m_end = NULL; const long long m_tmp = strtoll(optarg, &m_end, x_base); \
+			errno = 0; char *m_end = NULL; const sll m_tmp = strtoll(optarg, &m_end, x_base); \
 			if (errno || *m_end || m_tmp < x_min || m_tmp > x_max) { \
-				printf("Invalid value for '%s=%s': min=%lld, max=%lld\n", x_name, optarg, (long long)x_min, (long long)x_max); \
+				printf("Invalid value for '%s=%s': min=%lld, max=%lld\n", x_name, optarg, (sll)x_min, (sll)x_max); \
 				return -1; \
 			} \
 			x_dest = m_tmp; \
@@ -313,7 +358,7 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 					printf("Invalid height of '%s=%s': min=%u, max=%u\n", x_name, optarg, US_VIDEO_MIN_HEIGHT, US_VIDEO_MAX_HEIGHT); \
 					return -1; \
 				case 0: break; \
-				default: assert(0 && "Unknown error"); \
+				default: US_RAISE("Unknown error"); \
 			} \
 			break; \
 		}
@@ -358,8 +403,8 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 		const char *x_prefix##_name = NULL; \
 		mode_t x_prefix##_mode = 0660; \
 		bool x_prefix##_rm = false; \
-		unsigned x_prefix##_client_ttl = 10; \
-		unsigned x_prefix##_timeout = 1;
+		uint x_prefix##_client_ttl = 10; \
+		uint x_prefix##_timeout = 1;
 	ADD_SINK(jpeg_sink);
 	ADD_SINK(raw_sink);
 	ADD_SINK(h264_sink);
@@ -372,7 +417,7 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 	char short_opts[128];
 	us_build_short_options(_LONG_OPTS, short_opts, 128);
 
-	for (int ch; (ch = getopt_long(options->argc, options->argv_copy, short_opts, _LONG_OPTS, NULL)) >= 0;) {
+	for (int ch; (ch = getopt_long(opts->argc, opts->argv_copy, short_opts, _LONG_OPTS, NULL)) >= 0;) {
 		switch (ch) {
 			case _O_DEVICE:				OPT_SET(cap->path, optarg);
 			case _O_INPUT:				OPT_NUMBER("--input", cap->input, 0, 128, 0);
@@ -384,7 +429,7 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 			case _O_FORMAT_SWAP_RGB:	OPT_SET(cap->format_swap_rgb, true);
 			case _O_TV_STANDARD:		OPT_PARSE_ENUM("TV standard", cap->standard, us_capture_parse_standard, US_STANDARDS_STR);
 			case _O_IO_METHOD:			OPT_PARSE_ENUM("IO method", cap->io_method, us_capture_parse_io_method, US_IO_METHODS_STR);
-			case _O_DESIRED_FPS:		OPT_NUMBER("--desired-fps", cap->desired_fps, 0, US_VIDEO_MAX_FPS, 0);
+			case _O_DESIRED_FPS:		OPT_NUMBER("--desired-fps", stream->desired_fps, 0, US_VIDEO_MAX_FPS, 0);
 			case _O_MIN_FRAME_SIZE:		OPT_NUMBER("--min-frame-size", cap->min_frame_size, 1, 8192, 0);
 			case _O_ALLOW_TRUNCATED_FRAMES:	OPT_SET(cap->allow_truncated_frames, true);
 			case _O_PERSISTENT:			OPT_SET(cap->persistent, true);
@@ -467,11 +512,12 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 			case _O_H264_BITRATE:			OPT_NUMBER("--h264-bitrate", stream->h264_bitrate, 25, 20000, 0);
 			case _O_H264_GOP:				OPT_NUMBER("--h264-gop", stream->h264_gop, 0, 60, 0);
 			case _O_H264_M2M_DEVICE:		OPT_SET(stream->h264_m2m_path, optarg);
+			case _O_H264_BOOST:				OPT_SET(stream->h264_boost, true);
 
 #			ifdef WITH_V4P
 			case _O_V4P:
-				options->drm = us_drm_init();
-				stream->drm = options->drm;
+				opts->drm = us_drm_init();
+				stream->drm = opts->drm;
 				break;
 #			endif
 
@@ -483,13 +529,14 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 			case _O_GPIO_HAS_HTTP_CLIENTS:	OPT_NUMBER("--gpio-has-http-clients", us_g_gpio.has_http_clients.pin, 0, 256, 0);
 #			endif
 
-#			ifdef HAS_PDEATHSIG
+#			ifdef WITH_PDEATHSIG
 			case _O_EXIT_ON_PARENT_DEATH:
 				if (us_process_track_parent_death() < 0) {
 					return -1;
 				};
 				break;
 #			endif
+			case _O_EXIT_ON_DEVICE_ERROR:	OPT_SET(stream->exit_on_device_error, true);
 			case _O_EXIT_ON_NO_CLIENTS:		OPT_NUMBER("--exit-on-no-clients", stream->exit_on_no_clients, 0, 86400, 0);
 #			ifdef WITH_SETPROCTITLE
 			case _O_PROCESS_NAME_PREFIX:	OPT_SET(process_name_prefix, optarg);
@@ -516,7 +563,7 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 
 #	define ADD_SINK(x_label, x_prefix) { \
 			if (x_prefix##_name && x_prefix##_name[0] != '\0') { \
-				options->x_prefix = us_memsink_init_opened( \
+				opts->x_prefix = us_memsink_init_opened( \
 					x_label, \
 					x_prefix##_name, \
 					true, \
@@ -526,7 +573,7 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 					x_prefix##_timeout \
 				); \
 			} \
-			stream->x_prefix = options->x_prefix; \
+			stream->x_prefix = opts->x_prefix; \
 		}
 	ADD_SINK("JPEG", jpeg_sink);
 	ADD_SINK("RAW", raw_sink);
@@ -535,7 +582,7 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 
 #	ifdef WITH_SETPROCTITLE
 	if (process_name_prefix != NULL) {
-		us_process_set_name_prefix(options->argc, options->argv, process_name_prefix);
+		us_process_set_name_prefix(opts->argc, opts->argv, process_name_prefix);
 	}
 #	endif
 
@@ -549,9 +596,9 @@ int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, u
 	return 0;
 }
 
-static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited) {
-	unsigned tmp_width;
-	unsigned tmp_height;
+static int _parse_resolution(const char *str, uint *width, uint *height, bool limited) {
+	uint tmp_width;
+	uint tmp_height;
 	if (sscanf(str, "%ux%u", &tmp_width, &tmp_height) != 2) {
 		return -1;
 	}
@@ -581,38 +628,62 @@ static int _check_instance_id(const char *str) {
 }
 
 static void _features(void) {
-#	ifdef WITH_GPIO
+#	ifdef MK_WITH_PYTHON
+	puts("+ WITH_PYTHON");
+#	else
+	puts("- WITH_PYTHON");
+#	endif
+
+#	ifdef MK_WITH_JANUS
+	puts("+ WITH_JANUS");
+#	else
+	puts("- WITH_JANUS");
+#	endif
+
+#	ifdef MK_WITH_V4P
+	puts("+ WITH_V4P");
+#	else
+	puts("- WITH_V4P");
+#	endif
+
+#	ifdef MK_WITH_GPIO
 	puts("+ WITH_GPIO");
 #	else
 	puts("- WITH_GPIO");
 #	endif
 
-#	ifdef WITH_SYSTEMD
+#	ifdef MK_WITH_SYSTEMD
 	puts("+ WITH_SYSTEMD");
 #	else
 	puts("- WITH_SYSTEMD");
 #	endif
 
-#	ifdef WITH_PTHREAD_NP
+#	ifdef MK_WITH_PTHREAD_NP
 	puts("+ WITH_PTHREAD_NP");
 #	else
 	puts("- WITH_PTHREAD_NP");
 #	endif
 
-#	ifdef WITH_SETPROCTITLE
+#	ifdef MK_WITH_SETPROCTITLE
 	puts("+ WITH_SETPROCTITLE");
 #	else
 	puts("- WITH_SETPROCTITLE");
 #	endif
 
-#	ifdef HAS_PDEATHSIG
-	puts("+ HAS_PDEATHSIG");
+#	ifdef MK_WITH_PDEATHSIG
+	puts("+ WITH_PDEATHSIG");
 #	else
-	puts("- HAS_PDEATHSIG");
+	puts("- WITH_PDEATHSIG");
 #	endif
 }
 
-static void _help(FILE *fp, const us_capture_s *cap, const us_encoder_s *enc, const us_stream_s *stream, const us_server_s *server) {
+static void _help(
+	FILE *fp,
+	const us_capture_s *cap,
+	const us_encoder_s *enc,
+	const us_stream_s *stream,
+	const us_server_s *server
+) {
 #	define SAY(x_msg, ...) fprintf(fp, x_msg "\n", ##__VA_ARGS__)
 	SAY("\nuStreamer - Lightweight and fast MJPEG-HTTP streamer");
 	SAY("═══════════════════════════════════════════════════");
@@ -725,6 +796,7 @@ static void _help(FILE *fp, const us_capture_s *cap, const us_encoder_s *enc, co
 	SAY("    --h264-bitrate <kbps>  ───────── H264 bitrate in Kbps. Default: %u.\n", stream->h264_bitrate);
 	SAY("    --h264-gop <N>  ──────────────── Interval between keyframes. Default: %u.\n", stream->h264_gop);
 	SAY("    --h264-m2m-device </dev/path>  ─ Path to V4L2 M2M encoder device. Default: auto select.\n");
+	SAY("    --h264-boost  ────────────────── Increase encoder performance on PiKVM V4. Default: disabled.\n");
 #	ifdef WITH_V4P
 	SAY("Passthrough options for PiKVM V4:");
 	SAY("═════════════════════════════════");
@@ -740,11 +812,11 @@ static void _help(FILE *fp, const us_capture_s *cap, const us_encoder_s *enc, co
 	SAY("    --gpio-stream-online <pin>  ──── Set 1 while streaming. Default: disabled.\n");
 	SAY("    --gpio-has-http-clients <pin>  ─ Set 1 while stream has at least one client. Default: disabled.\n");
 #	endif
-#	if (defined(HAS_PDEATHSIG) || defined(WITH_SETPROCTITLE))
+#	if (defined(WITH_PDEATHSIG) || defined(WITH_SETPROCTITLE))
 	SAY("Process options:");
 	SAY("════════════════");
 #	endif
-#	ifdef HAS_PDEATHSIG
+#	ifdef WITH_PDEATHSIG
 	SAY("    --exit-on-parent-death  ─────── Exit the program if the parent process is dead. Default: disabled.\n");
 #	endif
 	SAY("    --exit-on-no-clients <sec> ──── Exit the program if there have been no stream or sink clients");

src/ustreamer/options.h

@@ -22,23 +22,8 @@
 
 #pragma once
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <strings.h>
-#include <ctype.h>
-#include <limits.h>
-#include <getopt.h>
-#include <errno.h>
-#include <assert.h>
-
-#include "../libs/const.h"
-#include "../libs/logging.h"
-#include "../libs/process.h"
-#include "../libs/frame.h"
+#include "../libs/types.h"
 #include "../libs/memsink.h"
-#include "../libs/options.h"
 #include "../libs/capture.h"
 #ifdef WITH_V4P
 #	include "../libs/drm/drm.h"
@@ -47,13 +32,10 @@
 #include "encoder.h"
 #include "stream.h"
 #include "http/server.h"
-#ifdef WITH_GPIO
-#	include "gpio/gpio.h"
-#endif
 
 
 typedef struct {
-	unsigned		argc;
+	uint			argc;
 	char			**argv;
 	char			**argv_copy;
 	us_memsink_s	*jpeg_sink;
@@ -65,7 +47,12 @@ typedef struct {
 } us_options_s;
 
 
-us_options_s *us_options_init(unsigned argc, char *argv[]);
+us_options_s *us_options_init(uint argc, char *argv[]);
 void us_options_destroy(us_options_s *options);
 
-int options_parse(us_options_s *options, us_capture_s *cap, us_encoder_s *enc, us_stream_s *stream, us_server_s *server);
+int us_options_parse(
+	us_options_s *options,
+	us_capture_s *cap,
+	us_encoder_s *enc,
+	us_stream_s *stream,
+	us_server_s *server);

src/ustreamer/stream.c

@@ -27,10 +27,12 @@
 #include <limits.h>
 #include <unistd.h>
 #include <errno.h>
-#include <assert.h>
+#include <math.h>
 
 #include <pthread.h>
 
+#include <event2/event.h> // jpeg_refresher
+
 #include "../libs/types.h"
 #include "../libs/errors.h"
 #include "../libs/tools.h"
@@ -59,14 +61,14 @@
 typedef struct {
 	pthread_t		tid;
 	us_capture_s	*cap;
-	us_queue_s		*queue;
+	us_queue_s		*q;
 	pthread_mutex_t	*mutex;
 	atomic_bool		*stop;
 } _releaser_context_s;
 
 typedef struct {
 	pthread_t	tid;
-	us_queue_s	*queue;
+	us_queue_s	*q;
 	us_stream_s	*stream;
 	atomic_bool	*stop;
 } _worker_context_s;
@@ -80,7 +82,7 @@ static void *_h264_thread(void *v_ctx);
 static void *_drm_thread(void *v_ctx);
 #endif
 
-static us_capture_hwbuf_s *_get_latest_hw(us_queue_s *queue);
+static us_capture_hwbuf_s *_get_latest_hw(us_queue_s *q);
 
 static bool _stream_has_jpeg_clients_cached(us_stream_s *stream);
 static bool _stream_has_any_clients_cached(us_stream_s *stream);
@@ -105,7 +107,7 @@ us_stream_s *us_stream_init(us_capture_s *cap, us_encoder_s *enc) {
 	US_RING_INIT_WITH_ITEMS(http->jpeg_ring, 4, us_frame_init);
 	atomic_init(&http->has_clients, false);
 	atomic_init(&http->snapshot_requested, 0);
-	atomic_init(&http->last_request_ts, 0);
+	atomic_init(&http->last_req_ts, 0);
 	http->captured_fpsi = us_fpsi_init("STREAM-CAPTURED", true);
 
 	us_stream_runtime_s *run;
@@ -129,7 +131,7 @@ us_stream_s *us_stream_init(us_capture_s *cap, us_encoder_s *enc) {
 
 void us_stream_update_blank(us_stream_s *stream, const us_capture_s *cap) {
 	us_stream_runtime_s *const run = stream->run;
-	us_blank_draw(run->blank, "< NO SIGNAL >", cap->width, cap->height);
+	us_blank_draw(run->blank, "< NO LIVE VIDEO >", cap->width, cap->height);
 	us_fpsi_frame_to_meta(run->blank->raw, &run->notify_meta); // Initial "unchanged" meta
 	_stream_update_captured_fpsi(stream, run->blank->raw, false);
 }
@@ -151,10 +153,16 @@ void us_stream_loop(us_stream_s *stream) {
 	us_stream_runtime_s *const run = stream->run;
 	us_capture_s *const cap = stream->cap;
 
-	atomic_store(&run->http->last_request_ts, us_get_now_monotonic());
+	atomic_store(&run->http->last_req_ts, us_get_now_monotonic());
 
 	if (stream->h264_sink != NULL) {
-		run->h264_enc = us_m2m_h264_encoder_init("H264", stream->h264_m2m_path, stream->h264_bitrate, stream->h264_gop);
+		run->h264_enc = us_m2m_h264_encoder_init(
+			"H264",
+			stream->h264_m2m_path,
+			stream->h264_bitrate,
+			stream->h264_gop,
+			stream->h264_boost);
+
 		run->h264_tmp_src = us_frame_init();
 		run->h264_dest = us_frame_init();
 	}
@@ -168,10 +176,10 @@ void us_stream_loop(us_stream_s *stream) {
 		const uint n_releasers = cap->run->n_bufs;
 		_releaser_context_s *releasers;
 		US_CALLOC(releasers, n_releasers);
-		for (uint index = 0; index < n_releasers; ++index) {
-			_releaser_context_s *ctx = &releasers[index];
+		for (uint i = 0; i < n_releasers; ++i) {
+			_releaser_context_s *ctx = &releasers[i];
 			ctx->cap = cap;
-			ctx->queue = us_queue_init(1);
+			ctx->q = us_queue_init(1);
 			ctx->mutex = &release_mutex;
 			ctx->stop = &threads_stop;
 			US_THREAD_CREATE(ctx->tid, _releaser_thread, ctx);
@@ -181,7 +189,7 @@ void us_stream_loop(us_stream_s *stream) {
 			_worker_context_s *x_ctx = NULL; \
 			if (x_cond) { \
 				US_CALLOC(x_ctx, 1); \
-				x_ctx->queue = us_queue_init(x_capacity); \
+				x_ctx->q = us_queue_init(x_capacity); \
 				x_ctx->stream = stream; \
 				x_ctx->stop = &threads_stop; \
 				US_THREAD_CREATE(x_ctx->tid, (x_thread), x_ctx); \
@@ -190,7 +198,7 @@ void us_stream_loop(us_stream_s *stream) {
 		CREATE_WORKER((stream->raw_sink != NULL), raw_ctx, _raw_thread, 2);
 		CREATE_WORKER((stream->h264_sink != NULL), h264_ctx, _h264_thread, cap->run->n_bufs);
 #		ifdef WITH_V4P
-		CREATE_WORKER((stream->drm != NULL), drm_ctx, _drm_thread, cap->run->n_bufs); // cppcheck-suppress assertWithSideEffect
+		CREATE_WORKER((stream->drm != NULL), drm_ctx, _drm_thread, cap->run->n_bufs);
 #		endif
 #		undef CREATE_WORKER
 
@@ -213,7 +221,7 @@ void us_stream_loop(us_stream_s *stream) {
 
 #			define QUEUE_HW(x_ctx) if (x_ctx != NULL) { \
 					us_capture_hwbuf_incref(hw); \
-					us_queue_put(x_ctx->queue, hw, 0); \
+					us_queue_put(x_ctx->q, hw, 0); \
 				}
 			QUEUE_HW(jpeg_ctx);
 			QUEUE_HW(raw_ctx);
@@ -222,7 +230,7 @@ void us_stream_loop(us_stream_s *stream) {
 			QUEUE_HW(drm_ctx);
 #			endif
 #			undef QUEUE_HW
-			us_queue_put(releasers[hw->buf.index].queue, hw, 0); // Plan to release
+			us_queue_put(releasers[hw->buf.index].q, hw, 0); // Plan to release
 
 			// Мы не обновляем здесь состояние синков, потому что это происходит внутри обслуживающих их потоков
 			_stream_check_suicide(stream);
@@ -240,7 +248,7 @@ void us_stream_loop(us_stream_s *stream) {
 
 #		define DELETE_WORKER(x_ctx) if (x_ctx != NULL) { \
 				US_THREAD_JOIN(x_ctx->tid); \
-				us_queue_destroy(x_ctx->queue); \
+				us_queue_destroy(x_ctx->q); \
 				free(x_ctx); \
 			}
 #		ifdef WITH_V4P
@@ -251,9 +259,9 @@ void us_stream_loop(us_stream_s *stream) {
 		DELETE_WORKER(jpeg_ctx);
 #		undef DELETE_WORKER
 
-		for (uint index = 0; index < n_releasers; ++index) {
-			US_THREAD_JOIN(releasers[index].tid);
-			us_queue_destroy(releasers[index].queue);
+		for (uint i = 0; i < n_releasers; ++i) {
+			US_THREAD_JOIN(releasers[i].tid);
+			us_queue_destroy(releasers[i].q);
 		}
 		free(releasers);
 		US_MUTEX_DESTROY(release_mutex);
@@ -283,7 +291,7 @@ static void *_releaser_thread(void *v_ctx) {
 
 	while (!atomic_load(ctx->stop)) {
 		us_capture_hwbuf_s *hw;
-		if (us_queue_get(ctx->queue, (void**)&hw, 0.1) < 0) {
+		if (us_queue_get(ctx->q, (void**)&hw, 0.1) < 0) {
 			continue;
 		}
 
@@ -312,6 +320,9 @@ static void *_jpeg_thread(void *v_ctx) {
 	_worker_context_s *ctx = v_ctx;
 	us_stream_s *stream = ctx->stream;
 
+	uint take = 1;
+	uint step = 1;
+
 	ldf grab_after_ts = 0;
 	uint fluency_passed = 0;
 
@@ -330,13 +341,13 @@ static void *_jpeg_thread(void *v_ctx) {
 					atomic_fetch_sub(&stream->run->http->snapshot_requested, 1);
 				}
 				US_LOG_PERF("JPEG: ##### Encoded JPEG exposed; worker=%s, latency=%.3Lf",
-					wr->name, us_get_now_monotonic() - job->dest->grab_ts);
+					wr->name, us_get_now_monotonic() - job->dest->grab_begin_ts);
 			} else {
 				US_LOG_PERF("JPEG: ----- Encoded JPEG dropped; worker=%s", wr->name);
 			}
 		}
 
-		us_capture_hwbuf_s *hw = _get_latest_hw(ctx->queue);
+		us_capture_hwbuf_s *hw = _get_latest_hw(ctx->q);
 		if (hw == NULL) {
 			continue;
 		}
@@ -348,6 +359,19 @@ static void *_jpeg_thread(void *v_ctx) {
 			continue;
 		}
 
+		if (stream->desired_fps > 0) {
+			const uint captured_fps = us_fpsi_get(stream->run->http->captured_fpsi, NULL);
+			take = ceilf((float)captured_fps / (float)stream->desired_fps);
+			if (step < take) {
+				US_LOG_DEBUG("JPEG: Passed encoding for FPS limit: step=%u, take=%u", step, take);
+				++step;
+				us_capture_hwbuf_decref(hw);
+				continue;
+			} else {
+				step = 1;
+			}
+		}
+
 		const ldf now_ts = us_get_now_monotonic();
 		if (now_ts < grab_after_ts) {
 			fluency_passed += 1;
@@ -374,7 +398,7 @@ static void *_raw_thread(void *v_ctx) {
 	_worker_context_s *ctx = v_ctx;
 
 	while (!atomic_load(ctx->stop)) {
-		us_capture_hwbuf_s *hw = _get_latest_hw(ctx->queue);
+		us_capture_hwbuf_s *hw = _get_latest_hw(ctx->q);
 		if (hw == NULL) {
 			continue;
 		}
@@ -394,9 +418,11 @@ static void *_h264_thread(void *v_ctx) {
 	_worker_context_s *ctx = v_ctx;
 	us_stream_s *stream = ctx->stream;
 
-	ldf grab_after_ts = 0;
+	uint take = 1;
+	uint step = 1;
+
 	while (!atomic_load(ctx->stop)) {
-		us_capture_hwbuf_s *hw = _get_latest_hw(ctx->queue);
+		us_capture_hwbuf_s *hw = _get_latest_hw(ctx->q);
 		if (hw == NULL) {
 			continue;
 		}
@@ -405,23 +431,25 @@ static void *_h264_thread(void *v_ctx) {
 			US_LOG_VERBOSE("H264: Passed encoding because nobody is watching");
 			goto decref;
 		}
-		if (hw->raw.grab_ts < grab_after_ts) {
-			US_LOG_DEBUG("H264: Passed encoding for FPS limit");
-			goto decref;
+
+		uint fps_limit = stream->run->h264_enc->run->fps_limit;
+		if (stream->desired_fps > 0 && (fps_limit == 0 || stream->desired_fps < fps_limit)) {
+			fps_limit = stream->desired_fps;
+		}
+		if (fps_limit > 0) {
+			const uint captured_fps = us_fpsi_get(stream->run->http->captured_fpsi, NULL);
+			take = ceilf((float)captured_fps / (float)fps_limit);
+			if (step < take) {
+				US_LOG_DEBUG("H264: Passed encoding for FPS limit: step=%u, take=%u", step, take);
+				++step;
+				goto decref;
+			} else {
+				step = 1;
+			}
 		}
 
 		_stream_encode_expose_h264(ctx->stream, &hw->raw, false);
 
-		// M2M-енкодер увеличивает задержку на 100 милисекунд при 1080p, если скормить ему больше 30 FPS.
-		// Поэтому у нас есть два режима: 60 FPS для маленьких видео и 30 для 1920x1080(1200).
-		// Следующй фрейм захватывается не раньше, чем это требуется по FPS, минус небольшая
-		// погрешность (если захват неравномерный) - немного меньше 1/60, и примерно треть от 1/30.
-		const uint fps_limit = stream->run->h264_enc->run->fps_limit;
-		if (fps_limit > 0) {
-			const ldf frame_interval = (ldf)1 / fps_limit;
-			grab_after_ts = hw->raw.grab_ts + frame_interval - 0.01;
-		}
-
 	decref:
 		us_capture_hwbuf_decref(hw);
 	}
@@ -443,7 +471,7 @@ static void *_drm_thread(void *v_ctx) {
 #		define SLOWDOWN { \
 				const ldf m_next_ts = us_get_now_monotonic() + 1; \
 				while (!atomic_load(ctx->stop) && us_get_now_monotonic() < m_next_ts) { \
-					us_capture_hwbuf_s *m_pass_hw = _get_latest_hw(ctx->queue); \
+					us_capture_hwbuf_s *m_pass_hw = _get_latest_hw(ctx->q); \
 					if (m_pass_hw != NULL) { \
 						us_capture_hwbuf_decref(m_pass_hw); \
 					} \
@@ -456,7 +484,7 @@ static void *_drm_thread(void *v_ctx) {
 			CHECK(us_drm_wait_for_vsync(stream->drm));
 			US_DELETE(prev_hw, us_capture_hwbuf_decref);
 
-			us_capture_hwbuf_s *hw = _get_latest_hw(ctx->queue);
+			us_capture_hwbuf_s *hw = _get_latest_hw(ctx->q);
 			if (hw == NULL) {
 				continue;
 			}
@@ -492,14 +520,14 @@ static void *_drm_thread(void *v_ctx) {
 }
 #endif
 
-static us_capture_hwbuf_s *_get_latest_hw(us_queue_s *queue) {
+static us_capture_hwbuf_s *_get_latest_hw(us_queue_s *q) {
 	us_capture_hwbuf_s *hw;
-	if (us_queue_get(queue, (void**)&hw, 0.1) < 0) {
+	if (us_queue_get(q, (void**)&hw, 0.1) < 0) {
 		return NULL;
 	}
-	while (!us_queue_is_empty(queue)) { // Берем только самый свежий кадр
+	while (!us_queue_is_empty(q)) { // Берем только самый свежий кадр
 		us_capture_hwbuf_decref(hw);
-		assert(!us_queue_get(queue, (void**)&hw, 0));
+		US_A(!us_queue_get(q, (void**)&hw, 0));
 	}
 	return hw;
 }
@@ -529,6 +557,8 @@ static int _stream_init_loop(us_stream_s *stream) {
 
 	int once = 0;
 	while (!atomic_load(&stream->run->stop)) {
+		const char *blank_reason = "< NO LIVE VIDEO >";
+
 #		ifdef WITH_GPIO
 		us_gpio_set_stream_online(false);
 #		endif
@@ -554,22 +584,73 @@ static int _stream_init_loop(us_stream_s *stream) {
 		switch (us_capture_open(stream->cap)) {
 			case 0: break;
 			case US_ERROR_NO_DEVICE:
-			case US_ERROR_NO_DATA:
-				US_ONCE({ US_LOG_INFO("Waiting for the capture device ..."); });
-				goto offline_and_retry;
+				blank_reason = (
+					"< NO CAPTURE DEVICE >\n \n"
+					"  Possible reasons:  \n \n"
+					"  - Device unplugged \n \n"
+					"  - Bad config       \n \n"
+					"  - Malfunction      "
+				);
+				goto silent_error;
+			case US_ERROR_NO_CABLE:
+				blank_reason = (
+					"< NO VIDEO SOURCE >\n \n"
+					" Possible reasons: \n \n"
+					" - Source is off   \n \n"
+					" - Cable problems  "
+				);
+				goto silent_error;
+			case US_ERROR_NO_SIGNAL:
+				blank_reason = (
+					"< NO SIGNAL DETECTED >\n \n"
+					"   Possible reasons:  \n \n"
+                    "   - Video suspended  \n \n"
+					"   - Cable problems   "
+				);
+				goto silent_error;
+			case US_ERROR_NO_SYNC:
+				blank_reason = (
+					"< NO SYNC WITH SIGNAL >\n \n"
+					"   Possible reasons:   \n \n"
+					"   - Source is crazy   \n \n"
+					"   - Cable problems    "
+				);
+				goto silent_error;
+			case US_ERROR_NO_LANES:
+				blank_reason = (
+					"< UNSUPPORTED SIGNAL TIMINGS >\n \n"
+					"      Possible reasons:       \n \n"
+					"    - Too high frequency      \n \n"
+					"    - Source ignores EDID     \n \n"
+					"    - Invalid EDID            "
+				);
+				goto verbose_error;
 			default:
-				once = 0;
-				goto offline_and_retry;
+				goto verbose_error;
 		}
 		us_encoder_open(stream->enc, stream->cap);
 		return 0;
 
+	silent_error:
+		if (!stream->exit_on_device_error) {
+			US_ONCE({ US_LOG_INFO("Waiting for the capture device ..."); });
+		}
+		goto offline_and_retry;
+
+	verbose_error:
+		once = 0;
+		goto offline_and_retry;
+
 	offline_and_retry:
-		for (uint count = 0; count < stream->error_delay * 10; ++count) {
+		if (stream->exit_on_device_error) {
+			US_LOG_INFO("Device error, exiting ...");
+			us_process_suicide();
+		}
+		for (uint i = 0; i < stream->error_delay * 10; ++i) {
 			if (atomic_load(&run->stop)) {
 				break;
 			}
-			if (count % 10 == 0) {
+			if (i % 10 == 0) {
 				// Каждую секунду повторяем blank
 				uint width = stream->cap->run->width;
 				uint height = stream->cap->run->height;
@@ -577,7 +658,7 @@ static int _stream_init_loop(us_stream_s *stream) {
 					width = stream->cap->width;
 					height = stream->cap->height;
 				}
-				us_blank_draw(run->blank, "< NO SIGNAL >", width, height);
+				us_blank_draw(run->blank, blank_reason, width, height);
 
 				_stream_update_captured_fpsi(stream, run->blank->raw, false);
 				_stream_expose_jpeg(stream, run->blank->jpeg);
@@ -634,15 +715,18 @@ close:
 
 static void _stream_expose_jpeg(us_stream_s *stream, const us_frame_s *frame) {
 	us_stream_runtime_s *const run = stream->run;
+
 	int ri;
 	while ((ri = us_ring_producer_acquire(run->http->jpeg_ring, 0)) < 0) {
 		if (atomic_load(&run->stop)) {
 			return;
 		}
 	}
+
 	us_frame_s *const dest = run->http->jpeg_ring->items[ri];
 	us_frame_copy(frame, dest);
 	us_ring_producer_release(run->http->jpeg_ring, ri);
+	event_active(run->http->jpeg_refresher, 0, 0);
 	if (stream->jpeg_sink != NULL) {
 		us_memsink_server_put(stream->jpeg_sink, dest, NULL);
 	}
@@ -658,6 +742,7 @@ static void _stream_encode_expose_h264(us_stream_s *stream, const us_frame_s *fr
 	if (stream->h264_sink == NULL) {
 		return;
 	}
+
 	us_stream_runtime_s *run = stream->run;
 
 	us_fpsi_meta_s meta = {.online = false};
@@ -684,16 +769,16 @@ static void _stream_check_suicide(us_stream_s *stream) {
 	if (stream->exit_on_no_clients == 0) {
 		return;
 	}
-	us_stream_runtime_s *const run = stream->run;
 
+	const atomic_ullong *last_req_ts = &stream->run->http->last_req_ts;
 	const ldf now_ts = us_get_now_monotonic();
-	const ull http_last_request_ts = atomic_load(&run->http->last_request_ts); // Seconds
+
 	if (_stream_has_any_clients_cached(stream)) {
-		atomic_store(&run->http->last_request_ts, now_ts);
-	} else if (http_last_request_ts + stream->exit_on_no_clients < now_ts) {
+		atomic_store(last_req_ts, now_ts);
+	} else if (atomic_load(last_req_ts) + stream->exit_on_no_clients < now_ts) {
 		US_LOG_INFO("No requests or HTTP/sink clients found in last %u seconds, exiting ...",
 			stream->exit_on_no_clients);
+		atomic_store(last_req_ts, now_ts); // Prevent a signal spam
 		us_process_suicide();
-		atomic_store(&run->http->last_request_ts, now_ts);
 	}
 }

src/ustreamer/stream.h

@@ -26,6 +26,8 @@
 
 #include <pthread.h>
 
+#include <event2/event.h> // jpeg_refresher
+
 #include "../libs/types.h"
 #include "../libs/queue.h"
 #include "../libs/ring.h"
@@ -51,10 +53,11 @@ typedef struct {
 	atomic_bool		h264_online;
 	us_fpsi_s		*h264_fpsi;
 
+	struct event	*jpeg_refresher;
 	us_ring_s		*jpeg_ring;
 	atomic_bool		has_clients;
 	atomic_uint		snapshot_requested;
-	atomic_ullong	last_request_ts; // Seconds
+	atomic_ullong	last_req_ts; // Seconds
 	us_fpsi_s		*captured_fpsi;
 } us_stream_http_s;
 
@@ -77,9 +80,11 @@ typedef struct {
 	us_capture_s	*cap;
 	us_encoder_s	*enc;
 
+	uint			desired_fps;
 	bool			notify_parent;
 	bool			slowdown;
 	uint			error_delay;
+	bool			exit_on_device_error;
 	uint			exit_on_no_clients;
 
 	us_memsink_s	*jpeg_sink;
@@ -89,6 +94,7 @@ typedef struct {
 	uint			h264_bitrate;
 	uint			h264_gop;
 	char			*h264_m2m_path;
+	bool			h264_boost;
 
 #	ifdef WITH_V4P
 	us_drm_s		*drm;

src/ustreamer/workers.c

@@ -37,17 +37,19 @@ static void *_worker_thread(void *v_worker);
 
 
 us_workers_pool_s *us_workers_pool_init(
-	const char *name, const char *wr_prefix, uint n_workers, ldf desired_interval,
-	us_workers_pool_job_init_f job_init, void *job_init_arg,
+	const char *name,
+	const char *wr_prefix,
+	uint n_workers,
+	us_workers_pool_job_init_f job_init,
+	void *job_init_arg,
 	us_workers_pool_job_destroy_f job_destroy,
-	us_workers_pool_run_job_f run_job) {
-
+	us_workers_pool_run_job_f run_job
+) {
 	US_LOG_INFO("Creating pool %s with %u workers ...", name, n_workers);
 
 	us_workers_pool_s *pool;
 	US_CALLOC(pool, 1);
 	pool->name = name;
-	pool->desired_interval = desired_interval;
 	pool->job_destroy = job_destroy;
 	pool->run_job = run_job;
 
@@ -58,12 +60,12 @@ us_workers_pool_s *us_workers_pool_init(
 	US_MUTEX_INIT(pool->free_workers_mutex);
 	US_COND_INIT(pool->free_workers_cond);
 
-	for (uint index = 0; index < pool->n_workers; ++index) {
+	for (uint i = 0; i < pool->n_workers; ++i) {
 		us_worker_s *wr;
 		US_CALLOC(wr, 1);
 
-		wr->number = index;
-		US_ASPRINTF(wr->name, "%s-%u", wr_prefix, index);
+		wr->number = i;
+		US_ASPRINTF(wr->name, "%s-%u", wr_prefix, i);
 
 		US_MUTEX_INIT(wr->has_job_mutex);
 		atomic_init(&wr->has_job, false);
@@ -113,11 +115,14 @@ us_worker_s *us_workers_pool_wait(us_workers_pool_s *pool) {
 
 	us_worker_s *found = NULL;
 	US_LIST_ITERATE(pool->workers, wr, { // cppcheck-suppress constStatement
-		if (!atomic_load(&wr->has_job) && (found == NULL || found->job_start_ts <= wr->job_start_ts)) {
+		if (
+			!atomic_load(&wr->has_job)
+			&& (found == NULL || found->job_start_ts <= wr->job_start_ts)
+		) {
 			found = wr;
 		}
 	});
-	assert(found != NULL);
+	US_A(found != NULL);
 	US_LIST_REMOVE(pool->workers, found);
 	US_LIST_APPEND(pool->workers, found); // Перемещаем в конец списка
 
@@ -147,14 +152,8 @@ ldf us_workers_pool_get_fluency_delay(us_workers_pool_s *pool, const us_worker_s
 
 	pool->approx_job_time = approx_job_time;
 
-	const ldf min_delay = pool->approx_job_time / pool->n_workers; // Среднее время работы размазывается на N воркеров
-
-	if (pool->desired_interval > 0 && min_delay > 0 && pool->desired_interval > min_delay) {
-		// Искусственное время задержки на основе желаемого FPS, если включен --desired-fps
-		// и аппаратный fps не попадает точно в желаемое значение
-		return pool->desired_interval;
-	}
-	return min_delay;
+	// Среднее время работы размазывается на N воркеров
+	return (pool->approx_job_time / pool->n_workers);
 }
 
 static void *_worker_thread(void *v_worker) {

src/ustreamer/workers.h

@@ -56,7 +56,6 @@ typedef bool (*us_workers_pool_run_job_f)(us_worker_s *wr);
 
 typedef struct us_workers_pool_sx {
 	const char		*name;
-	ldf				desired_interval;
 
 	us_workers_pool_job_destroy_f	job_destroy;
 	us_workers_pool_run_job_f		run_job;
@@ -76,8 +75,11 @@ typedef struct us_workers_pool_sx {
 
 
 us_workers_pool_s *us_workers_pool_init(
-	const char *name, const char *wr_prefix, uint n_workers, ldf desired_interval,
-	us_workers_pool_job_init_f job_init, void *job_init_arg,
+	const char *name,
+	const char *wr_prefix,
+	uint n_workers,
+	us_workers_pool_job_init_f job_init,
+	void *job_init_arg,
 	us_workers_pool_job_destroy_f job_destroy,
 	us_workers_pool_run_job_f run_job);
 

src/v4p/main.c

@@ -28,7 +28,6 @@
 #include <unistd.h>
 #include <getopt.h>
 #include <errno.h>
-#include <assert.h>
 
 #include <pthread.h>
 
@@ -242,14 +241,14 @@ static void _main_loop(void) {
 	us_drm_destroy(drm);
 }
 
-static void *_follower_thread(void *v_unix_follow) {
+static void *_follower_thread(void *v_unix_follow) { // cppcheck-suppress constParameterCallback
 	US_THREAD_SETTLE("follower");
 	const char *path = v_unix_follow;
-	assert(path != NULL);
+	US_A(path != NULL);
 
 	while (!atomic_load(&_g_stop)) {
 		int fd = socket(AF_UNIX, SOCK_STREAM, 0);
-		assert(fd >= 0);
+		US_A(fd >= 0);
 
 		struct sockaddr_un addr = {0};
 		strncpy(addr.sun_path, path, sizeof(addr.sun_path) - 1);

tools/make-ico-h.py

@@ -41,9 +41,9 @@ def main() -> None:
     data_text = "{\n\t" + ",\n\t".join(
         ", ".join(
             f"0x{ch:02X}"
-            for ch in data[index:index + 20]
+            for ch in data[i:i + 20]
         )
-        for index in range(0, len(data), 20)
+        for i in range(0, len(data), 20)
     ) + ",\n}"
 
     text = f"{common.C_PREPEND}\n"