3 #include "shared/shared_defs.h"
4 #include "ycbcr_interpretation.h"
9 #include <movit/image_format.h>
22 // Long options that have no corresponding short option.
29 OPTION_DEFAULT_HDMI_INPUT,
30 OPTION_FAKE_CARDS_AUDIO,
32 OPTION_HTTP_UNCOMPRESSED_VIDEO,
33 OPTION_HTTP_X264_VIDEO,
34 OPTION_HTTP_AV1_VIDEO,
35 OPTION_RECORD_X264_VIDEO,
36 OPTION_SEPARATE_X264_DISK_ENCODE,
39 OPTION_X264_SPEEDCONTROL,
40 OPTION_X264_SPEEDCONTROL_VERBOSE,
43 OPTION_X264_VBV_BUFSIZE,
44 OPTION_X264_VBV_MAX_BITRATE,
46 OPTION_X264_SEPARATE_DISK_PRESET,
47 OPTION_X264_SEPARATE_DISK_TUNE,
48 OPTION_X264_SEPARATE_DISK_BITRATE,
49 OPTION_X264_SEPARATE_DISK_CRF,
50 OPTION_X264_SEPARATE_DISK_PARAM,
56 OPTION_HTTP_COARSE_TIMEBASE,
57 OPTION_HTTP_AUDIO_CODEC,
58 OPTION_HTTP_AUDIO_BITRATE,
62 OPTION_SRT_DESTINATION,
64 OPTION_SRT_PASSPHRASE,
65 OPTION_SRT_YOUTUBE_STREAM_KEY,
67 OPTION_NO_TRANSCODE_VIDEO,
68 OPTION_NO_TRANSCODE_AUDIO,
74 OPTION_DISABLE_GAIN_STAGING_AUTO,
75 OPTION_ENABLE_GAIN_STAGING_AUTO,
76 OPTION_DISABLE_COMPRESSOR,
77 OPTION_ENABLE_COMPRESSOR,
78 OPTION_DISABLE_LIMITER,
79 OPTION_ENABLE_LIMITER,
80 OPTION_DISABLE_MAKEUP_GAIN_AUTO,
81 OPTION_ENABLE_MAKEUP_GAIN_AUTO,
82 OPTION_DISABLE_ALSA_OUTPUT,
84 OPTION_PRINT_VIDEO_LATENCY,
85 OPTION_MAX_INPUT_QUEUE_FRAMES,
86 OPTION_AUDIO_QUEUE_LENGTH_MS,
87 OPTION_OUTPUT_YCBCR_COEFFICIENTS,
88 OPTION_OUTPUT_BUFFER_FRAMES,
89 OPTION_OUTPUT_SLOP_FRAMES,
90 OPTION_OUTPUT_CARD_UNSYNCHRONIZED,
91 OPTION_TIMECODE_STREAM,
92 OPTION_TIMECODE_STDOUT,
93 OPTION_QUICK_CUT_KEYS,
97 OPTION_INPUT_YCBCR_INTERPRETATION,
98 OPTION_MJPEG_EXPORT_CARDS,
101 map<unsigned, unsigned> parse_mjpeg_export_cards(char *optarg)
103 map<unsigned, unsigned> ret;
104 if (optarg[0] == '\0') {
108 unsigned stream_idx = 0;
109 char *start = optarg;
111 char *end = strchr(start, ',');
112 if (end != nullptr) {
116 unsigned range_begin, range_end;
117 if (sscanf(start, "%u-%u", &range_begin, &range_end) != 2) {
118 range_begin = range_end = atoi(start);
120 if (range_end < range_begin) {
121 fprintf(stderr, "ERROR: Invalid range %u-%u in --mjpeg-export-cards=\n", range_begin, range_end);
124 if (range_end >= unsigned(global_flags.max_num_cards)) {
125 // There are situations where we could possibly want to
126 // include FFmpeg inputs (CEF inputs are unlikely),
127 // but they're not necessarily in 4:2:2 Y'CbCr, so it would
128 // require more functionality the the JPEG encoder.
129 fprintf(stderr, "ERROR: Asked for (zero-indexed) card %u in --mjpeg-export-cards=, but there are only %u cards\n",
130 range_end, global_flags.max_num_cards);
133 for (unsigned card_idx = range_begin; card_idx <= range_end; ++card_idx) {
134 if (ret.count(card_idx)) {
135 fprintf(stderr, "ERROR: Card %u was given twice in --mjpeg-export-cards=\n", card_idx);
138 ret[card_idx] = stream_idx++;
140 if (end == nullptr) {
149 void usage(Program program)
151 if (program == PROGRAM_KAERU) {
152 fprintf(stderr, "Usage: kaeru [OPTION]... SOURCE_URL\n");
154 fprintf(stderr, "Usage: nageru [OPTION]...\n");
156 fprintf(stderr, "\n");
157 fprintf(stderr, " --help print usage information\n");
158 if (program == PROGRAM_NAGERU) {
159 fprintf(stderr, " --fullscreen run in full screen, with no decorations\n");
161 fprintf(stderr, " -w, --width output width in pixels (default 1280)\n");
162 fprintf(stderr, " -h, --height output height in pixels (default 720)\n");
163 if (program == PROGRAM_NAGERU) {
164 fprintf(stderr, " -c, --num-cards set minimum number of input cards (default 2)\n");
165 fprintf(stderr, " --max-num-cards set maximum number of input cards (default %d)\n", MAX_VIDEO_CARDS);
166 fprintf(stderr, " -o, --output-card=CARD also output signal to the given card (default none)\n");
167 fprintf(stderr, " -t, --theme=FILE choose theme (default theme.lua)\n");
168 fprintf(stderr, " -I, --theme-dir=DIR search for theme in this directory (can be given multiple times)\n");
169 fprintf(stderr, " -r, --recording-dir=DIR where to store disk recording\n");
170 fprintf(stderr, " -v, --va-display=SPEC VA-API device for H.264 encoding\n");
171 fprintf(stderr, " ($DISPLAY spec or /dev/dri/render* path)\n");
172 fprintf(stderr, " -m, --map-signal=SIGNAL,CARD set a default card mapping (can be given multiple times)\n");
173 fprintf(stderr, " -M, --input-mapping=FILE start with the given audio input mapping (implies --multichannel)\n");
174 fprintf(stderr, " --multichannel start in multichannel audio mapping mode\n");
175 fprintf(stderr, " --midi-mapping=FILE start with the given MIDI controller mapping (implies --multichannel)\n");
176 fprintf(stderr, " --default-hdmi-input default to HDMI over SDI inputs for cards that have both\n");
177 fprintf(stderr, " --fake-cards-audio make fake (disconnected) cards output a simple tone\n");
178 fprintf(stderr, " --v4l-output=DEVICE send video (no audio) to V4L2 output/loopback\n");
179 fprintf(stderr, " --http-x264-video send x264-compressed video to HTTP clients\n");
180 fprintf(stderr, " --record-x264-video store x264-compressed video to disk (implies --http-x264-video,\n");
181 fprintf(stderr, " removes the need for working VA-API encoding)\n");
182 fprintf(stderr, " --separate-x264-disk-encode run a different x264 encoder for disk recording\n");
183 fprintf(stderr, " (implies --record-x264-video)\n");
185 fprintf(stderr, " --x264-preset x264 quality preset (default " X264_DEFAULT_PRESET ")\n");
186 fprintf(stderr, " --x264-tune x264 tuning (default " X264_DEFAULT_TUNE ", can be blank)\n");
187 fprintf(stderr, " --x264-speedcontrol try to match x264 preset to available CPU speed\n");
188 fprintf(stderr, " --x264-bitrate x264 bitrate (in kilobit/sec, default %d)\n",
189 DEFAULT_X264_OUTPUT_BIT_RATE);
190 fprintf(stderr, " --x264-crf=VALUE quality-based VBR (-12 to 51), incompatible with --x264-bitrate\n");
191 fprintf(stderr, " --x264-param=NAME[,VALUE] set any x264 parameter, for fine tuning\n");
192 if (program == PROGRAM_NAGERU) {
193 fprintf(stderr, " --x264-separate-disk-preset x264 quality preset (default " X264_DEFAULT_PRESET ")\n");
194 fprintf(stderr, " --x264-separate-disk-tune x264 tuning (default " X264_DEFAULT_TUNE ", can be blank)\n");
195 fprintf(stderr, " --x264-separate-disk-bitrate x264 bitrate (in kilobit/sec, default %d)\n",
196 DEFAULT_X264_OUTPUT_BIT_RATE);
197 fprintf(stderr, " --x264-separate-disk-crf=VALUE quality-based VBR (-12 to 51), \n");
198 fprintf(stderr, " incompatible with --x264-separate-disk-bitrate\n");
199 fprintf(stderr, " --x264-separate-disk-param=NAME[,VALUE] set any x264 parameter, for fine tuning\n");
202 fprintf(stderr, " --http-av1-video send AV1-compressed video to HTTP clients and SRT output\n");
203 fprintf(stderr, " --av1-preset SVT-AV1 quality preset (default %d, from -2 to 13)\n",
205 fprintf(stderr, " --av1-bitrate AV1 bitrate (in kilobit/sec, default %d)\n",
206 DEFAULT_AV1_OUTPUT_BIT_RATE);
207 fprintf(stderr, " --av1-fps=NUM[/DEN] AV1 encoded frame rate (default %d/%d)\n",
208 DEFAULT_AV1_FPS_NUM, DEFAULT_AV1_FPS_DEN);
209 fprintf(stderr, " --av1-param=NAME[,VALUE] set any SVT-AV1 parameter, for fine tuning\n");
211 fprintf(stderr, " --http-mux=NAME mux to use for HTTP streams (default " DEFAULT_STREAM_MUX_NAME ")\n");
212 fprintf(stderr, " --http-audio-codec=NAME audio codec to use for HTTP streams and SRT output\n");
213 fprintf(stderr, " (default is to use the same as for the recording)\n");
214 fprintf(stderr, " --http-audio-bitrate=KBITS audio codec bit rate to use for HTTP streams and SRT output\n");
215 fprintf(stderr, " (default is %d, ignored unless --http-audio-codec is set)\n",
216 DEFAULT_AUDIO_OUTPUT_BIT_RATE / 1000);
217 fprintf(stderr, " --http-port=PORT which port to use for the built-in HTTP server\n");
218 fprintf(stderr, " (default is %d)\n", DEFAULT_HTTPD_PORT);
220 fprintf(stderr, " --srt-port=PORT which port to use for receiving SRT streams\n");
221 fprintf(stderr, " (default is %d)\n", DEFAULT_SRT_PORT);
222 fprintf(stderr, " --no-srt disable receiving SRT streams\n");
224 if (program == PROGRAM_KAERU) {
225 fprintf(stderr, " --no-transcode-video copy encoded video raw from the source stream\n");
226 fprintf(stderr, " (experimental, must be H.264)\n");
227 fprintf(stderr, " --no-transcode-audio copy encoded audio raw from the source stream\n");
228 fprintf(stderr, " (requires --http-audio-codec= to be set)\n");
229 fprintf(stderr, " --disable-audio do not include any audio in the stream\n");
231 if (program == PROGRAM_NAGERU) {
233 fprintf(stderr, " --srt-destination=HOST:PORT send HTTP video stream also to given destination\n");
234 fprintf(stderr, " --srt-streamid=STREAMID SRT stream identifying ID\n");
235 fprintf(stderr, " --srt-passphrase=PASSPHRASE SRT encryption key\n");
236 fprintf(stderr, " --srt-youtube-stream-key=KEY shortcut for --srt-destination=a.srt.youtube.com:2010\n");
237 fprintf(stderr, " --srt-streamid=#!::u=<KEY>,copy=0,encoder=Nageru\n");
238 fprintf(stderr, " --srt-latency=MS output SRT latency in milliseconds (default is %d)\n", DEFAULT_SRT_OUTPUT_LATENCY_MS);
240 fprintf(stderr, " --flat-audio start with most audio processing turned off\n");
241 fprintf(stderr, " (can be overridden by e.g. --enable-limiter)\n");
242 fprintf(stderr, " --gain-staging=DB set initial gain staging to the given value\n");
243 fprintf(stderr, " (--disable-gain-staging-auto)\n");
244 fprintf(stderr, " --disable-locut turn off locut filter (also --enable)\n");
245 fprintf(stderr, " --disable-gain-staging-auto turn off automatic gain staging (also --enable)\n");
246 fprintf(stderr, " --disable-compressor turn off regular compressor (also --enable)\n");
247 fprintf(stderr, " --disable-limiter turn off limiter (also --enable)\n");
248 fprintf(stderr, " --disable-makeup-gain-auto turn off auto-adjustment of final makeup gain (also --enable)\n");
249 fprintf(stderr, " --disable-alsa-output disable audio monitoring via ALSA\n");
250 fprintf(stderr, " --print-video-latency print out measurements of video latency on stdout\n");
251 fprintf(stderr, " --max-input-queue-frames=FRAMES never keep more than FRAMES frames for each card\n");
252 fprintf(stderr, " (default 6, minimum 1)\n");
253 fprintf(stderr, " --audio-queue-length-ms=MS length of audio resampling queue (default 100.0)\n");
254 fprintf(stderr, " --output-ycbcr-coefficients={rec601,rec709,auto}\n");
255 fprintf(stderr, " Y'CbCr coefficient standard of output (default auto)\n");
256 fprintf(stderr, " auto is rec601, unless --output-card is used\n");
257 fprintf(stderr, " and a Rec. 709 mode (typically HD modes) is in use\n");
258 fprintf(stderr, " --output-buffer-frames=NUM number of frames in output buffer for --output-card,\n");
259 fprintf(stderr, " can be fractional (default 6.0); note also\n");
260 fprintf(stderr, " the audio queue can't be much longer than this\n");
261 fprintf(stderr, " --output-slop-frames=NUM if more less than this number of frames behind for\n");
262 fprintf(stderr, " --output-card, try to submit anyway instead of\n");
263 fprintf(stderr, " dropping the frame (default 0.5)\n");
264 fprintf(stderr, " --output-card-unsynchronized if --output-card is in use, do _not_ use it as\n");
265 fprintf(stderr, " master clock (may give jittery output and audio breakups)\n");
266 fprintf(stderr, " --timecode-stream show timestamp and timecode in stream\n");
267 fprintf(stderr, " --timecode-stdout show timestamp and timecode on standard output\n");
268 fprintf(stderr, " --quick-cut-keys enable direct cutting by Q, W, E, ... keys\n");
269 fprintf(stderr, " --10-bit use 10-bit color depth\n");
270 fprintf(stderr, " --input-ycbcr-interpretation=CARD,{rec601,rec709,auto}[,{limited,full}]\n");
271 fprintf(stderr, " Y'CbCr coefficient standard of card CARD (default auto)\n");
272 fprintf(stderr, " auto is rec601 for SD, rec709 for HD, always limited\n");
273 fprintf(stderr, " limited means standard 0-240/0-235 input range (for 8-bit)\n");
274 fprintf(stderr, " --mjpeg-export-cards=RANGE[,RANGE...]\n");
275 fprintf(stderr, " export the given cards in MJPEG format to /multicam.mp4,\n");
276 fprintf(stderr, " in the given order (ranges can be either single card indexes\n");
277 fprintf(stderr, " or pairs like 1-3 for camera 1,2,3; default is all cards)\n");
281 void parse_flags(Program program, int argc, char * const argv[])
283 static const option long_options[] = {
284 { "help", no_argument, 0, OPTION_HELP },
285 { "fullscreen", no_argument, 0, OPTION_FULLSCREEN },
286 { "width", required_argument, 0, 'w' },
287 { "height", required_argument, 0, 'h' },
288 { "num-cards", required_argument, 0, 'c' },
289 { "max-num-cards", required_argument, 0, OPTION_MAX_NUM_CARDS },
290 { "output-card", required_argument, 0, 'o' },
291 { "theme", required_argument, 0, 't' },
292 { "theme-dir", required_argument, 0, 'I' },
293 { "recording-dir", required_argument, 0, 'r' },
294 { "map-signal", required_argument, 0, 'm' },
295 { "input-mapping", required_argument, 0, 'M' },
296 { "va-display", required_argument, 0, 'v' },
297 { "multichannel", no_argument, 0, OPTION_MULTICHANNEL },
298 { "midi-mapping", required_argument, 0, OPTION_MIDI_MAPPING },
299 { "default-hdmi-input", no_argument, 0, OPTION_DEFAULT_HDMI_INPUT },
300 { "fake-cards-audio", no_argument, 0, OPTION_FAKE_CARDS_AUDIO },
301 { "v4l-output", required_argument, 0, OPTION_V4L_OUTPUT },
302 { "http-x264-video", no_argument, 0, OPTION_HTTP_X264_VIDEO },
303 { "record-x264-video", no_argument, 0, OPTION_RECORD_X264_VIDEO },
304 { "separate-x264-disk-encode", no_argument, 0, OPTION_SEPARATE_X264_DISK_ENCODE },
305 { "x264-preset", required_argument, 0, OPTION_X264_PRESET },
306 { "x264-tune", required_argument, 0, OPTION_X264_TUNE },
307 { "x264-speedcontrol", no_argument, 0, OPTION_X264_SPEEDCONTROL },
308 { "x264-crf", required_argument, 0, OPTION_X264_CRF },
309 { "x264-param", required_argument, 0, OPTION_X264_PARAM },
310 { "x264-separate-disk-preset", required_argument, 0, OPTION_X264_SEPARATE_DISK_PRESET },
311 { "x264-separate-disk-tune", required_argument, 0, OPTION_X264_SEPARATE_DISK_TUNE },
312 { "x264-separate-disk-bitrate", required_argument, 0, OPTION_X264_SEPARATE_DISK_BITRATE },
313 { "x264-separate-disk-crf", required_argument, 0, OPTION_X264_SEPARATE_DISK_CRF },
314 { "x264-separate-disk-param", required_argument, 0, OPTION_X264_SEPARATE_DISK_PARAM },
316 { "http-av1-video", no_argument, 0, OPTION_HTTP_AV1_VIDEO },
317 { "av1-preset", required_argument, 0, OPTION_AV1_PRESET },
318 { "av1-bitrate", required_argument, 0, OPTION_AV1_BITRATE },
319 { "av1-fps", required_argument, 0, OPTION_AV1_FPS },
320 { "av1-param", required_argument, 0, OPTION_AV1_PARAM },
322 { "http-mux", required_argument, 0, OPTION_HTTP_MUX },
323 { "http-audio-codec", required_argument, 0, OPTION_HTTP_AUDIO_CODEC },
324 { "http-audio-bitrate", required_argument, 0, OPTION_HTTP_AUDIO_BITRATE },
325 { "http-port", required_argument, 0, OPTION_HTTP_PORT },
327 { "srt-port", required_argument, 0, OPTION_SRT_PORT },
329 { "no-srt", no_argument, 0, OPTION_NO_SRT }, // We silently allow this even without HAVE_SRT.
331 { "srt-destination", required_argument, 0, OPTION_SRT_DESTINATION },
332 { "srt-streamid", required_argument, 0, OPTION_SRT_STREAMID },
333 { "srt-passphrase", required_argument, 0, OPTION_SRT_PASSPHRASE },
334 { "srt-youtube-stream-key", required_argument, 0, OPTION_SRT_YOUTUBE_STREAM_KEY },
335 { "srt-latency", required_argument, 0, OPTION_SRT_LATENCY },
337 { "no-transcode-video", no_argument, 0, OPTION_NO_TRANSCODE_VIDEO },
338 { "no-transcode-audio", no_argument, 0, OPTION_NO_TRANSCODE_AUDIO },
339 { "disable-audio", no_argument, 0, OPTION_DISABLE_AUDIO },
340 { "flat-audio", no_argument, 0, OPTION_FLAT_AUDIO },
341 { "gain-staging", required_argument, 0, OPTION_GAIN_STAGING },
342 { "disable-locut", no_argument, 0, OPTION_DISABLE_LOCUT },
343 { "enable-locut", no_argument, 0, OPTION_ENABLE_LOCUT },
344 { "disable-gain-staging-auto", no_argument, 0, OPTION_DISABLE_GAIN_STAGING_AUTO },
345 { "enable-gain-staging-auto", no_argument, 0, OPTION_ENABLE_GAIN_STAGING_AUTO },
346 { "disable-compressor", no_argument, 0, OPTION_DISABLE_COMPRESSOR },
347 { "enable-compressor", no_argument, 0, OPTION_ENABLE_COMPRESSOR },
348 { "disable-limiter", no_argument, 0, OPTION_DISABLE_LIMITER },
349 { "enable-limiter", no_argument, 0, OPTION_ENABLE_LIMITER },
350 { "disable-makeup-gain-auto", no_argument, 0, OPTION_DISABLE_MAKEUP_GAIN_AUTO },
351 { "enable-makeup-gain-auto", no_argument, 0, OPTION_ENABLE_MAKEUP_GAIN_AUTO },
352 { "disable-alsa-output", no_argument, 0, OPTION_DISABLE_ALSA_OUTPUT },
353 { "print-video-latency", no_argument, 0, OPTION_PRINT_VIDEO_LATENCY },
354 { "max-input-queue-frames", required_argument, 0, OPTION_MAX_INPUT_QUEUE_FRAMES },
355 { "audio-queue-length-ms", required_argument, 0, OPTION_AUDIO_QUEUE_LENGTH_MS },
356 { "output-ycbcr-coefficients", required_argument, 0, OPTION_OUTPUT_YCBCR_COEFFICIENTS },
357 { "output-buffer-frames", required_argument, 0, OPTION_OUTPUT_BUFFER_FRAMES },
358 { "output-slop-frames", required_argument, 0, OPTION_OUTPUT_SLOP_FRAMES },
359 { "output-card-unsynchronized", no_argument, 0, OPTION_OUTPUT_CARD_UNSYNCHRONIZED },
360 { "timecode-stream", no_argument, 0, OPTION_TIMECODE_STREAM },
361 { "timecode-stdout", no_argument, 0, OPTION_TIMECODE_STDOUT },
362 { "quick-cut-keys", no_argument, 0, OPTION_QUICK_CUT_KEYS },
363 { "10-bit", no_argument, 0, OPTION_10_BIT },
364 { "input-ycbcr-interpretation", required_argument, 0, OPTION_INPUT_YCBCR_INTERPRETATION },
365 { "mjpeg-export-cards", required_argument, 0, OPTION_MJPEG_EXPORT_CARDS },
367 // Do not explicitly signal texture data uploads (will give
368 // display corruption, but makes it possible to run with
369 // apitrace in real time). For developers only, so undocumented.
370 { "no-flush-pbos", no_argument, 0, OPTION_NO_FLUSH_PBOS },
372 // Output speedcontrol debugging statistics. For developers only,
373 // so undocumented (users can get this information from Prometheus
375 { "x264-speedcontrol-verbose", no_argument, 0, OPTION_X264_SPEEDCONTROL_VERBOSE },
377 // Deprecated variants.
378 { "10-bit-input", no_argument, 0, OPTION_10_BIT_INPUT },
379 { "10-bit-output", no_argument, 0, OPTION_10_BIT_OUTPUT },
383 vector<string> theme_dirs;
384 string output_ycbcr_coefficients = "auto";
385 bool card_to_mjpeg_stream_export_set = false;
387 int option_index = 0;
388 int c = getopt_long(argc, argv, "c:o:t:I:r:v:m:M:w:h:", long_options, &option_index);
395 global_flags.width = atoi(optarg);
398 global_flags.height = atoi(optarg);
401 global_flags.min_num_cards = atoi(optarg);
403 case OPTION_MAX_NUM_CARDS:
404 global_flags.max_num_cards = atoi(optarg);
407 global_flags.output_card = atoi(optarg);
410 global_flags.theme_filename = optarg;
413 theme_dirs.push_back(optarg);
416 global_flags.recording_dir = optarg;
419 char *ptr = strchr(optarg, ',');
420 if (ptr == nullptr) {
421 fprintf(stderr, "ERROR: Invalid argument '%s' to --map-signal (needs a signal and a card number, separated by comma)\n", optarg);
425 const int signal_num = atoi(optarg);
426 const int card_num = atoi(ptr + 1);
427 if (global_flags.default_stream_mapping.count(signal_num)) {
428 fprintf(stderr, "ERROR: Signal %d already mapped to card %d\n",
429 signal_num, global_flags.default_stream_mapping[signal_num]);
432 global_flags.default_stream_mapping[signal_num] = card_num;
436 global_flags.input_mapping_filename = optarg;
438 case OPTION_MULTICHANNEL:
439 global_flags.multichannel_mapping_mode = true;
442 global_flags.va_display = optarg;
444 case OPTION_MIDI_MAPPING:
445 global_flags.midi_mapping_filename = optarg;
446 global_flags.multichannel_mapping_mode = true;
448 case OPTION_DEFAULT_HDMI_INPUT:
449 global_flags.default_hdmi_input = true;
451 case OPTION_FAKE_CARDS_AUDIO:
452 global_flags.fake_cards_audio = true;
454 case OPTION_V4L_OUTPUT:
455 global_flags.v4l_output_device = optarg;
457 case OPTION_HTTP_MUX:
458 global_flags.stream_mux_name = optarg;
460 case OPTION_HTTP_AUDIO_CODEC:
461 global_flags.stream_audio_codec_name = optarg;
463 case OPTION_HTTP_AUDIO_BITRATE:
464 global_flags.stream_audio_codec_bitrate = atoi(optarg) * 1000;
466 case OPTION_HTTP_PORT:
467 global_flags.http_port = atoi(optarg);
470 case OPTION_SRT_PORT:
471 global_flags.srt_port = atoi(optarg);
475 global_flags.srt_port = -1;
478 case OPTION_SRT_DESTINATION: {
479 const char *ptr = strrchr(optarg, ':');
480 if (ptr == nullptr || strlen(optarg) < 3) {
481 fprintf(stderr, "ERROR: --srt-destination must be of the form host:port\n");
484 global_flags.srt_destination_host = string(optarg, ptr - optarg);
485 if (global_flags.srt_destination_host[0] == '[' &&
486 global_flags.srt_destination_host.back() == ']') {
487 // Support [IPv6]:port, in a sort of hackish way.
488 global_flags.srt_destination_host = global_flags.srt_destination_host.substr(1, global_flags.srt_destination_host.size() - 2);
490 global_flags.srt_destination_port = ptr + 1;
493 case OPTION_SRT_STREAMID:
494 global_flags.srt_streamid = optarg;
496 case OPTION_SRT_PASSPHRASE:
497 global_flags.srt_passphrase = optarg;
499 case OPTION_SRT_YOUTUBE_STREAM_KEY:
500 global_flags.srt_destination_host = "a.srt.youtube.com";
501 global_flags.srt_destination_port = "2010";
502 global_flags.srt_streamid = string("#!::u=") + optarg + ",copy=0,encoder=Nageru " NAGERU_VERSION;
504 case OPTION_SRT_LATENCY:
505 global_flags.srt_output_latency_ms = atoi(optarg);
508 case OPTION_NO_TRANSCODE_VIDEO:
509 global_flags.transcode_video = false;
511 case OPTION_NO_TRANSCODE_AUDIO:
512 global_flags.transcode_audio = false;
514 case OPTION_DISABLE_AUDIO:
515 global_flags.transcode_audio = false;
516 global_flags.enable_audio = false;
518 case OPTION_HTTP_X264_VIDEO:
519 global_flags.x264_video_to_http = true;
521 case OPTION_RECORD_X264_VIDEO:
522 global_flags.x264_video_to_disk = true;
524 case OPTION_SEPARATE_X264_DISK_ENCODE:
525 global_flags.x264_video_to_disk = true;
526 global_flags.x264_video_to_http = true;
527 global_flags.x264_separate_disk_encode = true;
529 case OPTION_HTTP_AV1_VIDEO:
530 global_flags.av1_video_to_http = true;
532 case OPTION_X264_PRESET:
533 global_flags.x264_preset = optarg;
535 case OPTION_X264_TUNE:
536 global_flags.x264_tune = optarg;
538 case OPTION_X264_SPEEDCONTROL:
539 global_flags.x264_speedcontrol = true;
541 case OPTION_X264_SPEEDCONTROL_VERBOSE:
542 global_flags.x264_speedcontrol_verbose = true;
544 case OPTION_X264_BITRATE:
545 global_flags.x264_bitrate = atoi(optarg);
547 case OPTION_X264_CRF:
548 global_flags.x264_crf = atof(optarg);
550 case OPTION_X264_PARAM:
551 global_flags.x264_extra_param.push_back(optarg);
553 case OPTION_X264_SEPARATE_DISK_PRESET:
554 global_flags.x264_separate_disk_preset = optarg;
556 case OPTION_X264_SEPARATE_DISK_TUNE:
557 global_flags.x264_separate_disk_tune = optarg;
559 case OPTION_X264_SEPARATE_DISK_BITRATE:
560 global_flags.x264_separate_disk_bitrate = atoi(optarg);
562 case OPTION_X264_SEPARATE_DISK_CRF:
563 global_flags.x264_separate_disk_crf = atof(optarg);
565 case OPTION_X264_SEPARATE_DISK_PARAM:
566 global_flags.x264_separate_disk_extra_param.push_back(optarg);
568 case OPTION_AV1_PRESET:
569 global_flags.av1_preset = atoi(optarg);
571 case OPTION_AV1_BITRATE:
572 global_flags.av1_bitrate = atoi(optarg);
574 case OPTION_AV1_FPS: {
576 const size_t pos = str.find('/');
577 if (pos == string::npos) {
578 global_flags.av1_fps_num = stoi(str);
579 global_flags.av1_fps_den = 1;
581 const string num = str.substr(0, pos);
582 const string den = str.substr(pos + 1);
583 global_flags.av1_fps_num = stoi(num);
584 global_flags.av1_fps_den = stoi(den);
588 case OPTION_AV1_PARAM:
589 global_flags.av1_extra_param.push_back(optarg);
591 case OPTION_FLAT_AUDIO:
592 // If --flat-audio is given, turn off everything that messes with the sound,
593 // except the final makeup gain.
594 global_flags.locut_enabled = false;
595 global_flags.gain_staging_auto = false;
596 global_flags.compressor_enabled = false;
597 global_flags.limiter_enabled = false;
599 case OPTION_GAIN_STAGING:
600 global_flags.initial_gain_staging_db = atof(optarg);
601 global_flags.gain_staging_auto = false;
603 case OPTION_DISABLE_LOCUT:
604 global_flags.locut_enabled = false;
606 case OPTION_ENABLE_LOCUT:
607 global_flags.locut_enabled = true;
609 case OPTION_DISABLE_GAIN_STAGING_AUTO:
610 global_flags.gain_staging_auto = false;
612 case OPTION_ENABLE_GAIN_STAGING_AUTO:
613 global_flags.gain_staging_auto = true;
615 case OPTION_DISABLE_COMPRESSOR:
616 global_flags.compressor_enabled = false;
618 case OPTION_ENABLE_COMPRESSOR:
619 global_flags.compressor_enabled = true;
621 case OPTION_DISABLE_LIMITER:
622 global_flags.limiter_enabled = false;
624 case OPTION_ENABLE_LIMITER:
625 global_flags.limiter_enabled = true;
627 case OPTION_DISABLE_MAKEUP_GAIN_AUTO:
628 global_flags.final_makeup_gain_auto = false;
630 case OPTION_ENABLE_MAKEUP_GAIN_AUTO:
631 global_flags.final_makeup_gain_auto = true;
633 case OPTION_DISABLE_ALSA_OUTPUT:
634 global_flags.enable_alsa_output = false;
636 case OPTION_NO_FLUSH_PBOS:
637 global_flags.flush_pbos = false;
639 case OPTION_PRINT_VIDEO_LATENCY:
640 global_flags.print_video_latency = true;
642 case OPTION_MAX_INPUT_QUEUE_FRAMES:
643 global_flags.max_input_queue_frames = atoi(optarg);
645 case OPTION_AUDIO_QUEUE_LENGTH_MS:
646 global_flags.audio_queue_length_ms = atof(optarg);
648 case OPTION_OUTPUT_YCBCR_COEFFICIENTS:
649 output_ycbcr_coefficients = optarg;
651 case OPTION_OUTPUT_BUFFER_FRAMES:
652 global_flags.output_buffer_frames = atof(optarg);
654 case OPTION_OUTPUT_SLOP_FRAMES:
655 global_flags.output_slop_frames = atof(optarg);
657 case OPTION_OUTPUT_CARD_UNSYNCHRONIZED:
658 global_flags.output_card_is_master = false;
660 case OPTION_TIMECODE_STREAM:
661 global_flags.display_timecode_in_stream = true;
663 case OPTION_TIMECODE_STDOUT:
664 global_flags.display_timecode_on_stdout = true;
666 case OPTION_QUICK_CUT_KEYS:
667 global_flags.enable_quick_cut_keys = true;
669 case OPTION_10_BIT_INPUT:
670 fprintf(stderr, "NOTE: --10-bit-input is a deprecated alias for --10-bit.\n");
671 global_flags.bit_depth = 10;
673 case OPTION_10_BIT_OUTPUT:
674 fprintf(stderr, "NOTE: --10-bit-output is a deprecated alias for --10-bit.\n");
675 global_flags.bit_depth = 10;
678 global_flags.bit_depth = 10;
680 case OPTION_INPUT_YCBCR_INTERPRETATION: {
681 char *ptr = strchr(optarg, ',');
682 if (ptr == nullptr) {
683 fprintf(stderr, "ERROR: Invalid argument '%s' to --input-ycbcr-interpretation (needs a card and an interpretation, separated by comma)\n", optarg);
687 const int card_num = atoi(optarg);
688 if (card_num < 0 || card_num >= MAX_VIDEO_CARDS) {
689 fprintf(stderr, "ERROR: Invalid card number %d\n", card_num);
693 YCbCrInterpretation interpretation;
694 char *interpretation_str = ptr + 1;
695 ptr = strchr(interpretation_str, ',');
696 if (ptr != nullptr) {
698 const char *range = ptr + 1;
699 if (strcmp(range, "full") == 0) {
700 interpretation.full_range = true;
701 } else if (strcmp(range, "limited") == 0) {
702 interpretation.full_range = false;
704 fprintf(stderr, "ERROR: Invalid Y'CbCr range '%s' (must be “full” or “limited”)\n", range);
709 if (strcmp(interpretation_str, "rec601") == 0) {
710 interpretation.ycbcr_coefficients_auto = false;
711 interpretation.ycbcr_coefficients = movit::YCBCR_REC_601;
712 } else if (strcmp(interpretation_str, "rec709") == 0) {
713 interpretation.ycbcr_coefficients_auto = false;
714 interpretation.ycbcr_coefficients = movit::YCBCR_REC_709;
715 } else if (strcmp(interpretation_str, "auto") == 0) {
716 interpretation.ycbcr_coefficients_auto = true;
717 if (interpretation.full_range) {
718 fprintf(stderr, "ERROR: Cannot use “auto” Y'CbCr coefficients with full range\n");
722 fprintf(stderr, "ERROR: Invalid Y'CbCr coefficients '%s' (must be “rec601”, “rec709” or “auto”)\n", interpretation_str);
725 global_flags.ycbcr_interpretation[card_num] = interpretation;
728 case OPTION_FULLSCREEN:
729 global_flags.fullscreen = true;
731 case OPTION_MJPEG_EXPORT_CARDS: {
732 if (card_to_mjpeg_stream_export_set) {
733 fprintf(stderr, "ERROR: --mjpeg-export-cards given twice\n");
736 global_flags.card_to_mjpeg_stream_export = parse_mjpeg_export_cards(optarg);
737 card_to_mjpeg_stream_export_set = true;
744 fprintf(stderr, "Unknown option '%s'\n", argv[option_index]);
745 fprintf(stderr, "\n");
751 if (global_flags.x264_video_to_http +
752 global_flags.av1_video_to_http > 1) {
753 fprintf(stderr, "ERROR: --http-{x264,av1}-video are mutually incompatible\n");
756 if (global_flags.bit_depth == 10) {
757 global_flags.x264_video_to_disk = true; // No 10-bit Quick Sync support.
758 if (!global_flags.av1_video_to_http) {
759 global_flags.x264_video_to_http = true;
762 if (global_flags.x264_video_to_disk && !global_flags.av1_video_to_http) {
763 global_flags.x264_video_to_http = true; // Quick Sync to HTTP but x264 to disk doesn't make sense.
765 if (global_flags.min_num_cards <= 0) {
766 fprintf(stderr, "ERROR: --num-cards must be at least 1\n");
769 if (global_flags.max_num_cards <= 0) {
770 fprintf(stderr, "ERROR: --max-num-cards must be at least 1\n");
773 if (global_flags.max_num_cards < global_flags.min_num_cards) {
774 fprintf(stderr, "ERROR: --max-num-cards can not be lower than --num-cards\n");
777 if (global_flags.output_card < -1 ||
778 global_flags.output_card >= global_flags.max_num_cards) {
779 fprintf(stderr, "ERROR: --output-card points to a nonexistant card\n");
782 if (global_flags.enable_audio && !global_flags.transcode_audio && global_flags.stream_audio_codec_name.empty()) {
783 fprintf(stderr, "ERROR: If not transcoding audio, you must specify ahead-of-time what audio codec is in use\n");
784 fprintf(stderr, " (using --http-audio-codec).\n");
787 if (global_flags.x264_speedcontrol) {
788 if (!global_flags.x264_preset.empty() && global_flags.x264_preset != "faster") {
789 fprintf(stderr, "WARNING: --x264-preset is overridden by --x264-speedcontrol (implicitly uses \"faster\" as base preset)\n");
791 global_flags.x264_preset = "faster";
792 } else if (global_flags.x264_preset.empty()) {
793 global_flags.x264_preset = X264_DEFAULT_PRESET;
795 if (global_flags.x264_separate_disk_preset.empty()) {
796 global_flags.x264_separate_disk_preset = X264_DEFAULT_PRESET;
798 if (!theme_dirs.empty()) {
799 global_flags.theme_dirs = theme_dirs;
802 // In reality, we could probably do with any even value (we subsample
803 // by two in some places), but it's better to be on the safe side
804 // wrt. video codecs and such. (I'd set 16 if I could, but 1080 isn't
806 if (global_flags.width <= 0 || (global_flags.width % 8) != 0 ||
807 global_flags.height <= 0 || (global_flags.height % 8) != 0) {
808 fprintf(stderr, "ERROR: --width and --height must be positive integers divisible by 8\n");
812 for (pair<int, int> mapping : global_flags.default_stream_mapping) {
813 if (mapping.second >= global_flags.max_num_cards) {
814 fprintf(stderr, "ERROR: Signal %d mapped to card %d, which doesn't exist (try adjusting --max-num-cards)\n",
815 mapping.first, mapping.second);
820 // Rec. 709 would be the sane thing to do, but it seems many players
821 // just default to BT.601 coefficients no matter what. We _do_ set
822 // the right flags, so that a player that works properly doesn't have
823 // to guess, but it's frequently ignored. See discussions
824 // in e.g. https://trac.ffmpeg.org/ticket/4978; the situation with
825 // browsers is complicated and depends on things like hardware acceleration
826 // (https://bugs.chromium.org/p/chromium/issues/detail?id=333619 for
827 // extensive discussion). VLC generally fixed this as part of 3.0.0
828 // (see e.g. https://github.com/videolan/vlc/commit/bc71288b2e38c07d6921472824b92eef1aa85f7e
829 // and https://github.com/videolan/vlc/commit/c3fc2683a9cde1d42674ebf9935dced05733a215),
830 // but earlier versions were pretty random.
832 // On the other hand, HDMI/SDI output typically requires Rec. 709 for
833 // HD resolutions (with no way of signaling anything else), which is
834 // a conflicting demand. In this case, we typically let the HDMI/SDI
835 // output win if it is active, but the user can override this.
836 if (output_ycbcr_coefficients == "auto") {
837 // Essentially: BT.709 if HDMI/SDI output is on, otherwise BT.601.
838 global_flags.ycbcr_rec709_coefficients = false;
839 global_flags.ycbcr_auto_coefficients = true;
840 } else if (output_ycbcr_coefficients == "rec709") {
841 global_flags.ycbcr_rec709_coefficients = true;
842 global_flags.ycbcr_auto_coefficients = false;
843 } else if (output_ycbcr_coefficients == "rec601") {
844 global_flags.ycbcr_rec709_coefficients = false;
845 global_flags.ycbcr_auto_coefficients = false;
847 fprintf(stderr, "ERROR: --output-ycbcr-coefficients must be “rec601”, “rec709” or “auto”\n");
851 if (global_flags.output_buffer_frames < 0.0f) {
852 // Actually, even zero probably won't make sense; there is some internal
853 // delay to the card.
854 fprintf(stderr, "ERROR: --output-buffer-frames can't be negative.\n");
857 if (global_flags.output_slop_frames < 0.0f) {
858 fprintf(stderr, "ERROR: --output-slop-frames can't be negative.\n");
861 if (global_flags.max_input_queue_frames < 1) {
862 fprintf(stderr, "ERROR: --max-input-queue-frames must be at least 1.\n");
865 if (global_flags.max_input_queue_frames > 10) {
866 fprintf(stderr, "WARNING: --max-input-queue-frames has little effect over 10.\n");
869 if (!isinf(global_flags.x264_crf)) { // CRF mode is selected.
870 if (global_flags.x264_bitrate != -1) {
871 fprintf(stderr, "ERROR: --x264-bitrate and --x264-crf are mutually incompatible.\n");
874 } else if (global_flags.x264_bitrate == -1) {
875 global_flags.x264_bitrate = DEFAULT_X264_OUTPUT_BIT_RATE;
878 if (!isinf(global_flags.x264_separate_disk_crf)) { // CRF mode is selected.
879 if (global_flags.x264_separate_disk_bitrate != -1) {
880 fprintf(stderr, "ERROR: --x264-separate-disk-bitrate and --x264-separate-disk-crf are mutually incompatible.\n");
883 } else if (global_flags.x264_separate_disk_bitrate == -1) {
884 global_flags.x264_separate_disk_bitrate = DEFAULT_X264_OUTPUT_BIT_RATE;
887 if (!card_to_mjpeg_stream_export_set) {
888 // Fill in the default mapping (export all cards, in order).
889 for (unsigned card_idx = 0; card_idx < unsigned(global_flags.max_num_cards); ++card_idx) {
890 global_flags.card_to_mjpeg_stream_export[card_idx] = card_idx;
894 if (global_flags.srt_destination_host == "a.srt.youtube.com" && global_flags.srt_passphrase.empty()) {
895 fprintf(stderr, "ERROR: Cannot stream to YouTube without --srt-passphrase (get it from the YouTube streaming console)\n");