FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/mpegtsenc.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 712 1402 50.8%
Functions: 35 40 87.5%
Branches: 351 892 39.3%
Line Branch Exec Source
1 /*
2 * MPEG-2 transport stream (aka DVB) muxer
3 * Copyright (c) 2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "libavutil/avassert.h"
23 #include "libavutil/bswap.h"
24 #include "libavutil/crc.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/mem.h"
29 #include "libavutil/opt.h"
30
31 #include "libavcodec/ac3_parser_internal.h"
32 #include "libavcodec/bytestream.h"
33 #include "libavcodec/defs.h"
34 #include "libavcodec/h264.h"
35 #include "libavcodec/hevc/hevc.h"
36 #include "libavcodec/vvc.h"
37 #include "libavcodec/startcode.h"
38
39 #include "avformat.h"
40 #include "avio_internal.h"
41 #include "internal.h"
42 #include "mpegts.h"
43 #include "mux.h"
44
45 #define PCR_TIME_BASE 27000000
46
47 /* write DVB SI sections */
48
49 #define DVB_PRIVATE_NETWORK_START 0xff01
50
51 /*********************************************/
52 /* mpegts section writer */
53
54 typedef struct MpegTSSection {
55 int pid;
56 int cc;
57 int discontinuity;
58 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
59 void *opaque;
60 int remaining;
61 } MpegTSSection;
62
63 typedef struct MpegTSService {
64 MpegTSSection pmt; /* MPEG-2 PMT table context */
65 int sid; /* service ID */
66 uint8_t name[256];
67 uint8_t provider_name[256];
68 int pcr_pid;
69 AVProgram *program;
70 } MpegTSService;
71
72 // service_type values as defined in ETSI 300 468
73 enum {
74 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
75 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
76 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
77 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
78 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
79 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
80 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19,
81 MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F,
82 };
83 typedef struct MpegTSWrite {
84 const AVClass *av_class;
85 MpegTSSection pat; /* MPEG-2 PAT table */
86 MpegTSSection sdt; /* MPEG-2 SDT table context */
87 MpegTSSection nit; /* MPEG-2 NIT table context */
88 MpegTSService **services;
89 AVPacket *pkt;
90 int64_t sdt_period; /* SDT period in PCR time base */
91 int64_t pat_period; /* PAT/PMT period in PCR time base */
92 int64_t nit_period; /* NIT period in PCR time base */
93 int nb_services;
94 int64_t first_pcr;
95 int first_dts_checked;
96 int64_t next_pcr;
97 int mux_rate; ///< set to 1 when VBR
98 int pes_payload_size;
99 int64_t total_size;
100
101 int transport_stream_id;
102 int original_network_id;
103 int service_id;
104 int service_type;
105
106 int pmt_start_pid;
107 int start_pid;
108 int m2ts_mode;
109 int m2ts_video_pid;
110 int m2ts_audio_pid;
111 int m2ts_pgssub_pid;
112 int m2ts_textsub_pid;
113
114 int pcr_period_ms;
115 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
116 #define MPEGTS_FLAG_AAC_LATM 0x02
117 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
118 #define MPEGTS_FLAG_SYSTEM_B 0x08
119 #define MPEGTS_FLAG_DISCONT 0x10
120 #define MPEGTS_FLAG_NIT 0x20
121 #define MPEGTS_FLAG_OMIT_RAI 0x40
122 int flags;
123 int copyts;
124 int tables_version;
125 int64_t pat_period_us;
126 int64_t sdt_period_us;
127 int64_t nit_period_us;
128 int64_t last_pat_ts;
129 int64_t last_sdt_ts;
130 int64_t last_nit_ts;
131
132 uint8_t provider_name[256];
133
134 int omit_video_pes_length;
135 } MpegTSWrite;
136
137 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
138 #define DEFAULT_PES_HEADER_FREQ 16
139 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
140
141 /* The section length is 12 bits. The first 2 are set to 0, the remaining
142 * 10 bits should not exceed 1021. */
143 #define SECTION_LENGTH 1020
144
145 /* NOTE: 4 bytes must be left at the end for the crc32 */
146 1346 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
147 {
148 unsigned int crc;
149 unsigned char packet[TS_PACKET_SIZE];
150 const unsigned char *buf_ptr;
151 unsigned char *q;
152 int first, b, len1, left;
153
154 2692 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
155 1346 -1, buf, len - 4));
156
157 1346 buf[len - 4] = (crc >> 24) & 0xff;
158 1346 buf[len - 3] = (crc >> 16) & 0xff;
159 1346 buf[len - 2] = (crc >> 8) & 0xff;
160 1346 buf[len - 1] = crc & 0xff;
161
162 /* send each packet */
163 1346 buf_ptr = buf;
164
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 2692 while (len > 0) {
165 1346 first = buf == buf_ptr;
166 1346 q = packet;
167 1346 *q++ = SYNC_BYTE;
168 1346 b = s->pid >> 8;
169
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 1346 if (first)
170 1346 b |= 0x40;
171 1346 *q++ = b;
172 1346 *q++ = s->pid;
173 1346 s->cc = (s->cc + 1) & 0xf;
174 1346 *q++ = 0x10 | s->cc;
175
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 1346 if (s->discontinuity) {
176 ✗ q[-1] |= 0x20;
177 ✗ *q++ = 1;
178 ✗ *q++ = 0x80;
179 ✗ s->discontinuity = 0;
180 }
181
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 1346 if (first)
182 1346 *q++ = 0; /* 0 offset */
183 1346 len1 = TS_PACKET_SIZE - (q - packet);
184
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 1346 if (len1 > len)
185 1346 len1 = len;
186 1346 memcpy(q, buf_ptr, len1);
187 1346 q += len1;
188 /* add known padding data */
189 1346 left = TS_PACKET_SIZE - (q - packet);
190
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 1346 if (left > 0)
191 1346 memset(q, STUFFING_BYTE, left);
192
193 1346 s->write_packet(s, packet);
194
195 1346 buf_ptr += len1;
196 1346 len -= len1;
197 }
198 1346 }
199
200 5423 static inline void put16(uint8_t **q_ptr, int val)
201 {
202 uint8_t *q;
203 5423 q = *q_ptr;
204 5423 *q++ = val >> 8;
205 5423 *q++ = val;
206 5423 *q_ptr = q;
207 5423 }
208
209 1346 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
210 int version, int sec_num, int last_sec_num,
211 uint8_t *buf, int len)
212 {
213 uint8_t section[1024], *q;
214 unsigned int tot_len;
215 /* reserved_future_use field must be set to 1 for SDT and NIT */
216
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 1346 unsigned int flags = (tid == SDT_TID || tid == NIT_TID) ? 0xf000 : 0xb000;
217
218 1346 tot_len = 3 + 5 + len + 4;
219 /* check if not too big */
220
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 1346 if (tot_len > 1024)
221 ✗ return AVERROR_INVALIDDATA;
222
223 1346 q = section;
224 1346 *q++ = tid;
225 1346 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
226 1346 put16(&q, id);
227 1346 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
228 1346 *q++ = sec_num;
229 1346 *q++ = last_sec_num;
230 1346 memcpy(q, buf, len);
231
232 1346 mpegts_write_section(s, section, tot_len);
233 1346 return 0;
234 }
235
236 /*********************************************/
237 /* mpegts writer */
238
239 #define DEFAULT_PROVIDER_NAME "FFmpeg"
240 #define DEFAULT_SERVICE_NAME "Service"
241
242 /* we retransmit the SI info at this rate */
243 #define SDT_RETRANS_TIME 500
244 #define PAT_RETRANS_TIME 100
245 #define PCR_RETRANS_TIME 20
246 #define NIT_RETRANS_TIME 500
247
248 typedef struct MpegTSWriteStream {
249 int pid; /* stream associated pid */
250 int cc;
251 int discontinuity;
252 int payload_size;
253 int first_timestamp_checked; ///< first pts/dts check needed
254 int prev_payload_key;
255 int64_t payload_pts;
256 int64_t payload_dts;
257 int payload_flags;
258 uint8_t *payload;
259 AVFormatContext *amux;
260 int data_st_warning;
261
262 int64_t pcr_period; /* PCR period in PCR time base */
263 int64_t last_pcr;
264
265 /* For Opus */
266 int opus_queued_samples;
267 int opus_pending_trim_start;
268
269 DVBAC3Descriptor *dvb_ac3_desc;
270 } MpegTSWriteStream;
271
272 578 static void mpegts_write_pat(AVFormatContext *s)
273 {
274 578 MpegTSWrite *ts = s->priv_data;
275 MpegTSService *service;
276 uint8_t data[SECTION_LENGTH], *q;
277 int i;
278
279 578 q = data;
280
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 578 if (ts->flags & MPEGTS_FLAG_NIT) {
281 ✗ put16(&q, 0x0000);
282 ✗ put16(&q, NIT_PID);
283 }
284
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 1156 for (i = 0; i < ts->nb_services; i++) {
285 578 service = ts->services[i];
286 578 put16(&q, service->sid);
287 578 put16(&q, 0xe000 | service->pmt.pid);
288 }
289 578 mpegts_write_section1(&ts->pat, PAT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
290 578 data, q - data);
291 578 }
292
293 380 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
294 {
295 380 memcpy(*q_ptr, buf, len);
296 380 *q_ptr += len;
297 380 }
298
299 ✗ static int put_arib_caption_descriptor(AVFormatContext *s, uint8_t **q_ptr,
300 AVCodecParameters *codecpar)
301 {
302 uint8_t stream_identifier;
303 uint16_t data_component_id;
304 ✗ uint8_t *q = *q_ptr;
305
306 ✗ switch (codecpar->profile) {
307 ✗ case AV_PROFILE_ARIB_PROFILE_A:
308 ✗ stream_identifier = 0x30;
309 ✗ data_component_id = 0x0008;
310 ✗ break;
311 ✗ case AV_PROFILE_ARIB_PROFILE_C:
312 ✗ stream_identifier = 0x87;
313 ✗ data_component_id = 0x0012;
314 ✗ break;
315 ✗ default:
316 ✗ av_log(s, AV_LOG_ERROR,
317 "Unset/unknown ARIB caption profile %d utilized!\n",
318 codecpar->profile);
319 ✗ return AVERROR_INVALIDDATA;
320 }
321
322 // stream_identifier_descriptor
323 ✗ *q++ = STREAM_IDENTIFIER_DESCRIPTOR; // descriptor_tag
324 ✗ *q++ = 1; // descriptor_length
325 ✗ *q++ = stream_identifier; // component_tag: stream_identifier
326
327 // data_component_descriptor, defined in ARIB STD-B10, part 2, 6.2.20
328 ✗ *q++ = DATA_COMPONENT_DESCRIPTOR; // descriptor_tag: ARIB data coding type descriptor
329 ✗ *q++ = 3; // descriptor_length
330 ✗ put16(&q, data_component_id); // data_component_id
331 // additional_arib_caption_info: defined in ARIB STD-B24, fascicle 1, Part 3, 9.6.1
332 // Here we utilize a pre-defined set of values defined in ARIB TR-B14,
333 // Fascicle 2, 4.2.8.5 for PMT usage, with the reserved bits in the middle
334 // set to 1 (as that is what every broadcaster seems to be doing in
335 // production).
336 ✗ *q++ = 0x3D; // DMF('0011'), Reserved('11'), Timing('01')
337
338 ✗ *q_ptr = q;
339
340 ✗ return 0;
341 }
342
343 63 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
344 {
345 63 uint8_t *q = *q_ptr;
346 63 *q++ = REGISTRATION_DESCRIPTOR;
347 63 *q++ = 4;
348 63 *q++ = tag;
349 63 *q++ = tag >> 8;
350 63 *q++ = tag >> 16;
351 63 *q++ = tag >> 24;
352 63 *q_ptr = q;
353 63 }
354
355 557 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
356 {
357 557 MpegTSWrite *ts = s->priv_data;
358 557 MpegTSWriteStream *ts_st = st->priv_data;
359 int stream_type;
360
361
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 557 switch (st->codecpar->codec_id) {
362 27 case AV_CODEC_ID_MPEG1VIDEO:
363 case AV_CODEC_ID_MPEG2VIDEO:
364 27 stream_type = STREAM_TYPE_VIDEO_MPEG2;
365 27 break;
366 ✗ case AV_CODEC_ID_MPEG4:
367 ✗ stream_type = STREAM_TYPE_VIDEO_MPEG4;
368 ✗ break;
369 42 case AV_CODEC_ID_H264:
370 42 stream_type = STREAM_TYPE_VIDEO_H264;
371 42 break;
372 ✗ case AV_CODEC_ID_HEVC:
373 ✗ stream_type = STREAM_TYPE_VIDEO_HEVC;
374 ✗ break;
375 ✗ case AV_CODEC_ID_VVC:
376 ✗ stream_type = STREAM_TYPE_VIDEO_VVC;
377 ✗ break;
378 ✗ case AV_CODEC_ID_CAVS:
379 ✗ stream_type = STREAM_TYPE_VIDEO_CAVS;
380 ✗ break;
381 ✗ case AV_CODEC_ID_AVS2:
382 ✗ stream_type = STREAM_TYPE_VIDEO_AVS2;
383 ✗ break;
384 ✗ case AV_CODEC_ID_AVS3:
385 ✗ stream_type = STREAM_TYPE_VIDEO_AVS3;
386 ✗ break;
387 ✗ case AV_CODEC_ID_DIRAC:
388 ✗ stream_type = STREAM_TYPE_VIDEO_DIRAC;
389 ✗ break;
390 ✗ case AV_CODEC_ID_VC1:
391 ✗ stream_type = STREAM_TYPE_VIDEO_VC1;
392 ✗ break;
393 455 case AV_CODEC_ID_MP2:
394 case AV_CODEC_ID_MP3:
395
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 455 if ( st->codecpar->sample_rate > 0
396
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 455 && st->codecpar->sample_rate < 32000) {
397 ✗ stream_type = STREAM_TYPE_AUDIO_MPEG2;
398 } else {
399 455 stream_type = STREAM_TYPE_AUDIO_MPEG1;
400 }
401 455 break;
402 ✗ case AV_CODEC_ID_AAC:
403 ✗ stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
404 ? STREAM_TYPE_AUDIO_AAC_LATM
405 ✗ : STREAM_TYPE_AUDIO_AAC;
406 ✗ break;
407 ✗ case AV_CODEC_ID_AAC_LATM:
408 ✗ stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
409 ✗ break;
410 ✗ case AV_CODEC_ID_AC3:
411 ✗ stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
412 ? STREAM_TYPE_PRIVATE_DATA
413 ✗ : STREAM_TYPE_ATSC_AUDIO_AC3;
414 ✗ break;
415 ✗ case AV_CODEC_ID_EAC3:
416 ✗ stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
417 ? STREAM_TYPE_PRIVATE_DATA
418 ✗ : STREAM_TYPE_ATSC_AUDIO_EAC3;
419 ✗ break;
420 ✗ case AV_CODEC_ID_DTS:
421 ✗ stream_type = STREAM_TYPE_BLURAY_AUDIO_DTS; // should be STREAM_TYPE_PRIVATE_DATA (ETSI TS 101 154), needs a DTS_descriptor() (ETSI EN 300 468)
422 ✗ break;
423 ✗ case AV_CODEC_ID_TRUEHD:
424 ✗ stream_type = STREAM_TYPE_BLURAY_AUDIO_TRUEHD; // should be STREAM_TYPE_PRIVATE_DATA (ETSI TS 101 154), needs a DTS-HD_descriptor() (ETSI EN 300 468)
425 ✗ break;
426 ✗ case AV_CODEC_ID_OPUS:
427 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
428 ✗ break;
429 ✗ case AV_CODEC_ID_TIMED_ID3:
430 ✗ stream_type = STREAM_TYPE_METADATA;
431 ✗ break;
432 ✗ case AV_CODEC_ID_SMPTE_2038:
433 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
434 ✗ break;
435 ✗ case AV_CODEC_ID_DVB_SUBTITLE:
436 case AV_CODEC_ID_DVB_TELETEXT:
437 case AV_CODEC_ID_ARIB_CAPTION:
438 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
439 ✗ break;
440 ✗ case AV_CODEC_ID_SMPTE_KLV:
441 ✗ if (st->codecpar->profile == AV_PROFILE_KLVA_SYNC) {
442 ✗ stream_type = STREAM_TYPE_METADATA;
443 } else {
444 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
445 }
446 ✗ break;
447 33 default:
448 33 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
449 "Stream %d, codec %s, is muxed as a private data stream "
450 "and may not be recognized upon reading.\n", st->index,
451 33 avcodec_get_name(st->codecpar->codec_id));
452 33 stream_type = STREAM_TYPE_PRIVATE_DATA;
453 33 break;
454 }
455
456 557 return stream_type;
457 }
458
459 30 static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
460 {
461 int stream_type;
462 30 MpegTSWriteStream *ts_st = st->priv_data;
463
464
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 30 switch (st->codecpar->codec_id) {
465 ✗ case AV_CODEC_ID_MPEG2VIDEO:
466 ✗ stream_type = STREAM_TYPE_VIDEO_MPEG2;
467 ✗ break;
468 ✗ case AV_CODEC_ID_H264:
469 ✗ stream_type = STREAM_TYPE_VIDEO_H264;
470 ✗ break;
471 ✗ case AV_CODEC_ID_VC1:
472 ✗ stream_type = STREAM_TYPE_VIDEO_VC1;
473 ✗ break;
474 ✗ case AV_CODEC_ID_HEVC:
475 ✗ stream_type = STREAM_TYPE_VIDEO_HEVC;
476 ✗ break;
477 30 case AV_CODEC_ID_PCM_BLURAY:
478 30 stream_type = STREAM_TYPE_BLURAY_AUDIO_PCM_BLURAY;
479 30 break;
480 ✗ case AV_CODEC_ID_AC3:
481 ✗ stream_type = STREAM_TYPE_BLURAY_AUDIO_AC3;
482 ✗ break;
483 ✗ case AV_CODEC_ID_DTS:
484 ✗ stream_type = (st->codecpar->ch_layout.nb_channels > 6) ?
485 ✗ STREAM_TYPE_BLURAY_AUDIO_DTS_HD :
486 STREAM_TYPE_BLURAY_AUDIO_DTS;
487 ✗ break;
488 ✗ case AV_CODEC_ID_TRUEHD:
489 ✗ stream_type = STREAM_TYPE_BLURAY_AUDIO_TRUEHD;
490 ✗ break;
491 ✗ case AV_CODEC_ID_EAC3:
492 ✗ stream_type = STREAM_TYPE_BLURAY_AUDIO_EAC3;
493 ✗ break;
494 ✗ case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
495 ✗ stream_type = STREAM_TYPE_BLURAY_SUBTITLE_PGS;
496 ✗ break;
497 ✗ case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
498 ✗ stream_type = STREAM_TYPE_BLURAY_SUBTITLE_TEXT;
499 ✗ break;
500 ✗ default:
501 ✗ av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
502 "Stream %d, codec %s, is muxed as a private data stream "
503 "and may not be recognized upon reading.\n", st->index,
504 ✗ avcodec_get_name(st->codecpar->codec_id));
505 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
506 ✗ break;
507 }
508
509 30 return stream_type;
510 }
511
512 578 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
513 {
514 578 MpegTSWrite *ts = s->priv_data;
515 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
516 578 int val, stream_type, i, err = 0;
517
518 578 q = data;
519 578 put16(&q, 0xe000 | service->pcr_pid);
520
521 578 program_info_length_ptr = q;
522 578 q += 2; /* patched after */
523
524 /* put program info here */
525
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 578 if (ts->m2ts_mode) {
526 30 put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
527 30 *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
528 30 *q++ = 0x04; // descriptor_length
529 30 put16(&q, 0x0fff); // CA_System_ID
530 30 *q++ = 0xfc; // private_data_byte
531 30 *q++ = 0xfc; // private_data_byte
532 }
533
534 578 val = 0xf000 | (q - program_info_length_ptr - 2);
535 578 program_info_length_ptr[0] = val >> 8;
536 578 program_info_length_ptr[1] = val;
537
538
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 1165 for (i = 0; i < s->nb_streams; i++) {
539 587 AVStream *st = s->streams[i];
540 587 MpegTSWriteStream *ts_st = st->priv_data;
541 587 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
542 587 const char default_language[] = "und";
543
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 587 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
544 587 enum AVCodecID codec_id = st->codecpar->codec_id;
545
546
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 587 if (s->nb_programs) {
547 ✗ int k, found = 0;
548 ✗ AVProgram *program = service->program;
549
550 ✗ for (k = 0; k < program->nb_stream_indexes; k++)
551 ✗ if (program->stream_index[k] == i) {
552 ✗ found = 1;
553 ✗ break;
554 }
555
556 ✗ if (!found)
557 ✗ continue;
558 }
559
560
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 587 if (q - data > SECTION_LENGTH - 32) {
561 ✗ err = 1;
562 ✗ break;
563 }
564
565
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 587 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
566
567 587 *q++ = stream_type;
568 587 put16(&q, 0xe000 | ts_st->pid);
569 587 desc_length_ptr = q;
570 587 q += 2; /* patched after */
571
572 /* write optional descriptors here */
573
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 587 switch (st->codecpar->codec_type) {
574 518 case AVMEDIA_TYPE_AUDIO:
575
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 518 if (codec_id == AV_CODEC_ID_AC3)
576 ✗ put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
577
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 518 if (codec_id == AV_CODEC_ID_EAC3)
578 ✗ put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));
579
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 518 if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
580 ✗ if (codec_id == AV_CODEC_ID_AC3) {
581 ✗ DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;
582
583 ✗ *q++= AC3_DESCRIPTOR; // AC3 descriptor see A038 DVB SI
584 ✗ if (dvb_ac3_desc) {
585 ✗ int len = 1 +
586 ✗ !!(dvb_ac3_desc->component_type_flag) +
587 ✗ !!(dvb_ac3_desc->bsid_flag) +
588 ✗ !!(dvb_ac3_desc->mainid_flag) +
589 ✗ !!(dvb_ac3_desc->asvc_flag);
590
591 ✗ *q++ = len;
592 ✗ *q++ = dvb_ac3_desc->component_type_flag << 7 | dvb_ac3_desc->bsid_flag << 6 |
593 ✗ dvb_ac3_desc->mainid_flag << 5 | dvb_ac3_desc->asvc_flag << 4;
594
595 ✗ if (dvb_ac3_desc->component_type_flag) *q++ = dvb_ac3_desc->component_type;
596 ✗ if (dvb_ac3_desc->bsid_flag) *q++ = dvb_ac3_desc->bsid;
597 ✗ if (dvb_ac3_desc->mainid_flag) *q++ = dvb_ac3_desc->mainid;
598 ✗ if (dvb_ac3_desc->asvc_flag) *q++ = dvb_ac3_desc->asvc;
599 } else {
600 ✗ *q++=1; // 1 byte, all flags sets to 0
601 ✗ *q++=0; // omit all fields...
602 }
603 ✗ } else if (codec_id == AV_CODEC_ID_EAC3) {
604 ✗ *q++= ENHANCED_AC3_DESCRIPTOR; // EAC3 descriptor see A038 DVB SI
605 ✗ *q++=1; // 1 byte, all flags sets to 0
606 ✗ *q++=0; // omit all fields...
607 }
608 }
609
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 518 if (codec_id == AV_CODEC_ID_S302M)
610 33 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
611
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 518 if (codec_id == AV_CODEC_ID_OPUS) {
612 ✗ int ch = st->codecpar->ch_layout.nb_channels;
613
614 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
615 ✗ if (q - data > SECTION_LENGTH - 6 - 4) {
616 ✗ err = 1;
617 ✗ break;
618 }
619
620 ✗ put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
621
622 ✗ *q++ = DVB_EXTENSION_DESCRIPTOR;
623 ✗ *q++ = 2;
624 ✗ *q++ = 0x80;
625
626 ✗ if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
627 ✗ if (st->codecpar->extradata[18] == 0 && ch <= 2) {
628 /* RTP mapping family */
629 ✗ *q++ = ch;
630 ✗ } else if (st->codecpar->extradata[18] == 1 && ch <= 8 &&
631 ✗ st->codecpar->extradata_size >= 21 + ch) {
632 static const uint8_t coupled_stream_counts[9] = {
633 1, 0, 1, 1, 2, 2, 2, 3, 3
634 };
635 static const uint8_t channel_map_a[8][8] = {
636 {0},
637 {0, 1},
638 {0, 2, 1},
639 {0, 1, 2, 3},
640 {0, 4, 1, 2, 3},
641 {0, 4, 1, 2, 3, 5},
642 {0, 4, 1, 2, 3, 5, 6},
643 {0, 6, 1, 2, 3, 4, 5, 7},
644 };
645 static const uint8_t channel_map_b[8][8] = {
646 {0},
647 {0, 1},
648 {0, 1, 2},
649 {0, 1, 2, 3},
650 {0, 1, 2, 3, 4},
651 {0, 1, 2, 3, 4, 5},
652 {0, 1, 2, 3, 4, 5, 6},
653 {0, 1, 2, 3, 4, 5, 6, 7},
654 };
655 /* Vorbis mapping family */
656
657 ✗ if (st->codecpar->extradata[19] == ch - coupled_stream_counts[ch] &&
658 ✗ st->codecpar->extradata[20] == coupled_stream_counts[ch] &&
659 ✗ memcmp(&st->codecpar->extradata[21], channel_map_a[ch - 1], ch) == 0) {
660 ✗ *q++ = ch;
661 ✗ } else if (ch >= 2 && st->codecpar->extradata[19] == ch &&
662 ✗ st->codecpar->extradata[20] == 0 &&
663 ✗ memcmp(&st->codecpar->extradata[21], channel_map_b[ch - 1], ch) == 0) {
664 ✗ *q++ = ch | 0x80;
665 } else {
666 /* Unsupported, could write an extended descriptor here */
667 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
668 ✗ *q++ = 0xff;
669 }
670 } else {
671 /* Unsupported */
672 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
673 ✗ *q++ = 0xff;
674 }
675 ✗ } else if (ch <= 2) {
676 /* Assume RTP mapping family */
677 ✗ *q++ = ch;
678 } else {
679 /* Unsupported */
680 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
681 ✗ *q++ = 0xff;
682 }
683 }
684
685
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 518 if (language != default_language ||
686
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 518 st->disposition & (AV_DISPOSITION_CLEAN_EFFECTS |
687 AV_DISPOSITION_HEARING_IMPAIRED |
688 AV_DISPOSITION_VISUAL_IMPAIRED)) {
689 const char *p, *next;
690 uint8_t *len_ptr;
691
692 ✗ *q++ = ISO_639_LANGUAGE_DESCRIPTOR;
693 ✗ len_ptr = q++;
694 ✗ *len_ptr = 0;
695
696 ✗ for (p = next = language; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
697 ✗ if (q - data > SECTION_LENGTH - 4) {
698 ✗ err = 1;
699 ✗ break;
700 }
701 ✗ next = strchr(p, ',');
702 ✗ if (strlen(p) != 3 && (!next || next != p + 3))
703 ✗ continue; /* not a 3-letter code */
704
705 ✗ *q++ = *p++;
706 ✗ *q++ = *p++;
707 ✗ *q++ = *p++;
708
709 ✗ if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
710 ✗ *q++ = 0x01;
711 ✗ else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
712 ✗ *q++ = 0x02;
713 ✗ else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
714 ✗ *q++ = 0x03;
715 else
716 ✗ *q++ = 0; /* undefined type */
717
718 ✗ *len_ptr += 4;
719 }
720
721 ✗ if (*len_ptr == 0)
722 ✗ q -= 2; /* no language codes were written */
723 }
724 518 break;
725 ✗ case AVMEDIA_TYPE_SUBTITLE:
726 ✗ if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
727 uint8_t *len_ptr;
728 ✗ int extradata_copied = 0;
729
730 ✗ *q++ = SUBTITLING_DESCRIPTOR; /* subtitling_descriptor */
731 ✗ len_ptr = q++;
732
733 ✗ while (strlen(language) >= 3) {
734 ✗ if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
735 ✗ err = 1;
736 ✗ break;
737 }
738 ✗ *q++ = *language++;
739 ✗ *q++ = *language++;
740 ✗ *q++ = *language++;
741 /* Skip comma */
742 ✗ if (*language != '\0')
743 ✗ language++;
744
745 ✗ if (st->codecpar->extradata_size - extradata_copied >= 5) {
746 ✗ *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
747 ✗ memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
748 ✗ extradata_copied += 5;
749 ✗ q += 4;
750 } else {
751 /* subtitling_type:
752 * 0x10 - normal with no monitor aspect ratio criticality
753 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
754 ✗ *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
755 ✗ if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
756 /* support of old 4-byte extradata format */
757 ✗ memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
758 ✗ extradata_copied += 4;
759 ✗ q += 4;
760 } else {
761 ✗ put16(&q, 1); /* composition_page_id */
762 ✗ put16(&q, 1); /* ancillary_page_id */
763 }
764 }
765 }
766
767 ✗ *len_ptr = q - len_ptr - 1;
768 ✗ } else if (codec_id == AV_CODEC_ID_DVB_TELETEXT) {
769 ✗ uint8_t *len_ptr = NULL;
770 ✗ int extradata_copied = 0;
771
772 /* The descriptor tag. teletext_descriptor */
773 ✗ *q++ = TELETEXT_DESCRIPTOR;
774 ✗ len_ptr = q++;
775
776 ✗ while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
777 ✗ *q++ = *language++;
778 ✗ *q++ = *language++;
779 ✗ *q++ = *language++;
780 /* Skip comma */
781 ✗ if (*language != '\0')
782 ✗ language++;
783
784 ✗ if (st->codecpar->extradata_size - 1 > extradata_copied) {
785 ✗ memcpy(q, st->codecpar->extradata + extradata_copied, 2);
786 ✗ extradata_copied += 2;
787 ✗ q += 2;
788 } else {
789 /* The Teletext descriptor:
790 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
791 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
792 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
793 ✗ *q++ = 0x08;
794 ✗ *q++ = 0x00;
795 }
796 }
797
798 ✗ *len_ptr = q - len_ptr - 1;
799 ✗ } else if (codec_id == AV_CODEC_ID_ARIB_CAPTION) {
800 ✗ if (put_arib_caption_descriptor(s, &q, st->codecpar) < 0)
801 ✗ break;
802 }
803 ✗ break;
804 69 case AVMEDIA_TYPE_VIDEO:
805
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 69 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
806 ✗ put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
807
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 69 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
808 ✗ put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
809
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 69 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
810 ✗ put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
811
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 69 } else if (stream_type == STREAM_TYPE_VIDEO_CAVS || stream_type == STREAM_TYPE_VIDEO_AVS2 ||
812 stream_type == STREAM_TYPE_VIDEO_AVS3) {
813 ✗ put_registration_descriptor(&q, MKTAG('A', 'V', 'S', 'V'));
814 }
815 69 break;
816 ✗ case AVMEDIA_TYPE_DATA:
817 ✗ if (codec_id == AV_CODEC_ID_SMPTE_KLV) {
818 ✗ put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
819 ✗ } else if (codec_id == AV_CODEC_ID_SMPTE_2038) {
820 ✗ put_registration_descriptor(&q, MKTAG('V', 'A', 'N', 'C'));
821 ✗ } else if (codec_id == AV_CODEC_ID_TIMED_ID3) {
822 ✗ const char *tag = "ID3 ";
823 ✗ *q++ = METADATA_DESCRIPTOR;
824 ✗ *q++ = 13;
825 ✗ put16(&q, 0xffff); /* metadata application format */
826 ✗ putbuf(&q, tag, strlen(tag));
827 ✗ *q++ = 0xff; /* metadata format */
828 ✗ putbuf(&q, tag, strlen(tag));
829 ✗ *q++ = 0; /* metadata service ID */
830 ✗ *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
831 }
832 ✗ break;
833 }
834
835 587 val = 0xf000 | (q - desc_length_ptr - 2);
836 587 desc_length_ptr[0] = val >> 8;
837 587 desc_length_ptr[1] = val;
838 }
839
840
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 578 if (err)
841 ✗ av_log(s, AV_LOG_ERROR,
842 "The PMT section cannot fit stream %d and all following streams.\n"
843 "Try reducing the number of languages in the audio streams "
844 "or the total number of streams.\n", i);
845
846 578 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
847 578 data, q - data);
848 578 return 0;
849 }
850
851 190 static void mpegts_write_sdt(AVFormatContext *s)
852 {
853 190 MpegTSWrite *ts = s->priv_data;
854 MpegTSService *service;
855 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
856 int i, running_status, free_ca_mode, val;
857
858 190 q = data;
859 190 put16(&q, ts->original_network_id);
860 190 *q++ = 0xff;
861
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 380 for (i = 0; i < ts->nb_services; i++) {
862 190 service = ts->services[i];
863 190 put16(&q, service->sid);
864 190 *q++ = 0xfc | 0x00; /* currently no EIT info */
865 190 desc_list_len_ptr = q;
866 190 q += 2;
867 190 running_status = 4; /* running */
868 190 free_ca_mode = 0;
869
870 /* write only one descriptor for the service name and provider */
871 190 *q++ = SERVICE_DESCRIPTOR;
872 190 desc_len_ptr = q;
873 190 q++;
874 190 *q++ = ts->service_type;
875 190 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
876 190 putbuf(&q, service->name, service->name[0] + 1);
877 190 desc_len_ptr[0] = q - desc_len_ptr - 1;
878
879 /* fill descriptor length */
880 190 val = (running_status << 13) | (free_ca_mode << 12) |
881 190 (q - desc_list_len_ptr - 2);
882 190 desc_list_len_ptr[0] = val >> 8;
883 190 desc_list_len_ptr[1] = val;
884 }
885 190 mpegts_write_section1(&ts->sdt, SDT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
886 190 data, q - data);
887 190 }
888
889 ✗ static void mpegts_write_nit(AVFormatContext *s)
890 {
891 ✗ MpegTSWrite *ts = s->priv_data;
892 uint8_t data[SECTION_LENGTH], *q, *desc_len_ptr, *loop_len_ptr;
893
894 ✗ q = data;
895
896 //network_descriptors_length
897 ✗ put16(&q, 0xf000 | (ts->provider_name[0] + 2));
898
899 //network_name_descriptor
900 ✗ *q++ = NETWORK_NAME_DESCRIPTOR;
901 ✗ putbuf(&q, ts->provider_name, ts->provider_name[0] + 1);
902
903 //transport_stream_loop_length
904 ✗ loop_len_ptr = q;
905 ✗ q += 2;
906
907 ✗ put16(&q, ts->transport_stream_id);
908 ✗ put16(&q, ts->original_network_id);
909
910 //transport_descriptors_length
911 ✗ desc_len_ptr = q;
912 ✗ q += 2;
913
914 //service_list_descriptor
915 ✗ *q++ = SERVICE_LIST_DESCRIPTOR;
916 ✗ *q++ = 3 * ts->nb_services;
917 ✗ for (int i = 0; i < ts->nb_services; i++) {
918 ✗ put16(&q, ts->services[i]->sid);
919 ✗ *q++ = ts->service_type;
920 }
921
922 //calculate lengths
923 ✗ put16(&desc_len_ptr, 0xf000 | q - (desc_len_ptr + 2));
924 ✗ put16(&loop_len_ptr, 0xf000 | q - (loop_len_ptr + 2));
925
926 ✗ mpegts_write_section1(&ts->nit, NIT_TID, ts->original_network_id, ts->tables_version, 0, 0,
927 ✗ data, q - data);
928 ✗ }
929
930 /* This stores a string in buf with the correct encoding and also sets the
931 * first byte as the length. !str is accepted for an empty string.
932 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
933 * then we keep it as is, otherwise we signal UTF-8 encoding. */
934 99 static int encode_str8(uint8_t *buf, const char *str)
935 {
936 size_t str_len;
937
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 99 if (!str)
938 ✗ str = "";
939 99 str_len = strlen(str);
940
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 99 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
941 99 const uint8_t *q = str;
942 99 int has_multibyte = 0;
943
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 791 while (*q) {
944 uint32_t code;
945
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 692 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
946 692 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
947 }
948
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 99 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
949 ✗ if (str_len > 254)
950 ✗ return AVERROR(EINVAL);
951 ✗ buf[0] = str_len + 1;
952 ✗ buf[1] = 0x15;
953 ✗ memcpy(&buf[2], str, str_len);
954 ✗ return 0;
955 }
956 }
957 99 invalid:
958 /* Otherwise let's just encode the string as is! */
959
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 99 if (str_len > 255)
960 ✗ return AVERROR(EINVAL);
961 99 buf[0] = str_len;
962 99 memcpy(&buf[1], str, str_len);
963 99 return 0;
964 }
965
966 10624 static int64_t get_pcr(const MpegTSWrite *ts)
967 {
968 21248 return av_rescale(ts->total_size + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
969 10624 ts->first_pcr;
970 }
971
972 82207 static void write_packet(AVFormatContext *s, const uint8_t *packet)
973 {
974 82207 MpegTSWrite *ts = s->priv_data;
975
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 82207 if (ts->m2ts_mode) {
976 10624 int64_t pcr = get_pcr(s->priv_data);
977 10624 uint32_t tp_extra_header = pcr % 0x3fffffff;
978 10624 tp_extra_header = AV_RB32(&tp_extra_header);
979 10624 avio_write(s->pb, (unsigned char *) &tp_extra_header,
980 sizeof(tp_extra_header));
981 }
982 82207 avio_write(s->pb, packet, TS_PACKET_SIZE);
983 82207 ts->total_size += TS_PACKET_SIZE;
984 82207 }
985
986 1346 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
987 {
988 1346 AVFormatContext *ctx = s->opaque;
989 1346 write_packet(ctx, packet);
990 1346 }
991
992 33 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
993 const AVDictionary *metadata,
994 AVProgram *program)
995 {
996 33 MpegTSWrite *ts = s->priv_data;
997 MpegTSService *service;
998 AVDictionaryEntry *title, *provider;
999 char default_service_name[32];
1000 const char *service_name;
1001 const char *provider_name;
1002
1003 33 title = av_dict_get(metadata, "service_name", NULL, 0);
1004
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 33 if (!title)
1005 33 title = av_dict_get(metadata, "title", NULL, 0);
1006 33 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
1007
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 33 service_name = title ? title->value : default_service_name;
1008 33 provider = av_dict_get(metadata, "service_provider", NULL, 0);
1009
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 33 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
1010
1011 33 service = av_mallocz(sizeof(MpegTSService));
1012
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 33 if (!service)
1013 ✗ return NULL;
1014 33 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
1015 33 service->sid = sid;
1016 33 service->pcr_pid = 0x1fff;
1017
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 66 if (encode_str8(service->provider_name, provider_name) < 0 ||
1018 33 encode_str8(service->name, service_name) < 0) {
1019 ✗ av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
1020 ✗ goto fail;
1021 }
1022 33 ts->sdt.remaining -= 10 + service->provider_name[0] + service->name[0];
1023
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 33 if (ts->sdt.remaining < 0)
1024 ✗ goto fail;
1025
1026
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 33 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
1027 ✗ goto fail;
1028
1029 33 service->pmt.write_packet = section_write_packet;
1030 33 service->pmt.opaque = s;
1031 33 service->pmt.cc = 15;
1032 33 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1033 33 service->program = program;
1034
1035 33 return service;
1036 ✗ fail:
1037 ✗ av_free(service);
1038 ✗ return NULL;
1039 }
1040
1041 33 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
1042 {
1043 33 MpegTSWrite *ts = s->priv_data;
1044 33 MpegTSWriteStream *ts_st = pcr_st->priv_data;
1045
1046
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 33 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
1047 ✗ int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
1048 ✗ ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
1049 } else {
1050 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
1051 33 int64_t frame_period = 0;
1052
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 33 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1053 21 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
1054
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 21 if (!frame_size) {
1055 7 av_log(s, AV_LOG_WARNING, "frame size not set\n");
1056 7 frame_size = 512;
1057 }
1058 21 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
1059
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 12 } else if (pcr_st->avg_frame_rate.num) {
1060 6 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
1061 }
1062
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 33 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
1063 27 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
1064 else
1065 6 ts_st->pcr_period = 1;
1066 }
1067
1068 // output a PCR as soon as possible
1069 33 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
1070 33 }
1071
1072 33 static void select_pcr_streams(AVFormatContext *s)
1073 {
1074 33 MpegTSWrite *ts = s->priv_data;
1075
1076
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 66 for (int i = 0; i < ts->nb_services; i++) {
1077 33 MpegTSService *service = ts->services[i];
1078 33 AVStream *pcr_st = NULL;
1079 33 AVProgram *program = service->program;
1080
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 33 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
1081
1082
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 67 for (int j = 0; j < nb_streams; j++) {
1083
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 34 AVStream *st = s->streams[program ? program->stream_index[j] : j];
1084
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 34 if (!pcr_st ||
1085
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 1 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1086 {
1087 33 pcr_st = st;
1088 }
1089 }
1090
1091
1/2
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✗ Branch 1 not taken.
 33 if (pcr_st) {
1092 33 MpegTSWriteStream *ts_st = pcr_st->priv_data;
1093 33 service->pcr_pid = ts_st->pid;
1094 33 enable_pcr_generation_for_stream(s, pcr_st);
1095 33 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
1096 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
1097 }
1098 }
1099 33 }
1100
1101 33 static int mpegts_init(AVFormatContext *s)
1102 {
1103 33 MpegTSWrite *ts = s->priv_data;
1104 AVDictionaryEntry *provider;
1105 const char *provider_name;
1106 int i, j;
1107 int ret;
1108
1109
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 33 if (ts->m2ts_mode == -1) {
1110
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 27 if (av_match_ext(s->url, "m2ts")) {
1111 ✗ ts->m2ts_mode = 1;
1112 } else {
1113 27 ts->m2ts_mode = 0;
1114 }
1115 }
1116
1117 33 ts->m2ts_video_pid = M2TS_VIDEO_PID;
1118 33 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
1119 33 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
1120 33 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
1121
1122
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 33 if (ts->m2ts_mode) {
1123 6 ts->pmt_start_pid = M2TS_PMT_PID;
1124
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 6 if (s->nb_programs > 1) {
1125 ✗ av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
1126 ✗ return AVERROR(EINVAL);
1127 }
1128 }
1129
1130
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 33 if (s->max_delay < 0) /* Not set by the caller */
1131 ✗ s->max_delay = 0;
1132
1133 // round up to a whole number of TS packets
1134 33 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
1135
1136 33 ts->sdt.remaining = SECTION_LENGTH - 3;
1137
1138
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 33 if (!s->nb_programs) {
1139 /* allocate a single DVB service */
1140
1/2
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 33 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
1141 ✗ return AVERROR(ENOMEM);
1142 } else {
1143 ✗ for (i = 0; i < s->nb_programs; i++) {
1144 ✗ AVProgram *program = s->programs[i];
1145 ✗ if (!mpegts_add_service(s, program->id, program->metadata, program))
1146 ✗ return AVERROR(ENOMEM);
1147 }
1148 }
1149
1150 33 ts->pat.pid = PAT_PID;
1151 /* Initialize at 15 so that it wraps and is equal to 0 for the
1152 * first packet we write. */
1153 33 ts->pat.cc = 15;
1154 33 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1155 33 ts->pat.write_packet = section_write_packet;
1156 33 ts->pat.opaque = s;
1157
1158 33 ts->sdt.pid = SDT_PID;
1159 33 ts->sdt.cc = 15;
1160 33 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1161 33 ts->sdt.write_packet = section_write_packet;
1162 33 ts->sdt.opaque = s;
1163
1164 33 ts->nit.pid = NIT_PID;
1165 33 ts->nit.cc = 15;
1166 33 ts->nit.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1167 33 ts->nit.write_packet = section_write_packet;
1168 33 ts->nit.opaque = s;
1169
1170 33 ts->pkt = ffformatcontext(s)->pkt;
1171
1172 /* assign pids to each stream */
1173
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 67 for (i = 0; i < s->nb_streams; i++) {
1174 34 AVStream *st = s->streams[i];
1175 MpegTSWriteStream *ts_st;
1176
1177 34 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
1178
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 34 if (!ts_st) {
1179 ✗ return AVERROR(ENOMEM);
1180 }
1181 34 st->priv_data = ts_st;
1182
1183 34 avpriv_set_pts_info(st, 33, 1, 90000);
1184
1185 34 ts_st->payload = av_mallocz(ts->pes_payload_size);
1186
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 34 if (!ts_st->payload) {
1187 ✗ return AVERROR(ENOMEM);
1188 }
1189
1190 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1191 * this range are assigned a calculated pid. */
1192
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 34 if (st->id < 16) {
1193
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 34 if (ts->m2ts_mode) {
1194
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 6 switch (st->codecpar->codec_type) {
1195 ✗ case AVMEDIA_TYPE_VIDEO:
1196 ✗ ts_st->pid = ts->m2ts_video_pid++;
1197 ✗ break;
1198 6 case AVMEDIA_TYPE_AUDIO:
1199 6 ts_st->pid = ts->m2ts_audio_pid++;
1200 6 break;
1201 ✗ case AVMEDIA_TYPE_SUBTITLE:
1202 ✗ switch (st->codecpar->codec_id) {
1203 ✗ case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1204 ✗ ts_st->pid = ts->m2ts_pgssub_pid++;
1205 ✗ break;
1206 ✗ case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1207 ✗ ts_st->pid = ts->m2ts_textsub_pid++;
1208 ✗ break;
1209 }
1210 ✗ break;
1211 }
1212
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 6 if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1213
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 6 ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1214
1/2
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 6 ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1215
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 6 ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1216
1/2
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 6 ts_st->pid < 16) {
1217 ✗ av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1218 ✗ return AVERROR(EINVAL);
1219 }
1220 } else {
1221 28 ts_st->pid = ts->start_pid + i;
1222 }
1223 } else {
1224 ✗ ts_st->pid = st->id;
1225 }
1226
1/2
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 34 if (ts_st->pid >= 0x1FFF) {
1227 ✗ av_log(s, AV_LOG_ERROR,
1228 "Invalid stream id %d, must be less than 8191\n", st->id);
1229 ✗ return AVERROR(EINVAL);
1230 }
1231
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 68 for (j = 0; j < ts->nb_services; j++) {
1232
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 34 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1233 ✗ av_log(s, AV_LOG_ERROR,
1234 ✗ "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1235 ✗ return AVERROR(EINVAL);
1236 }
1237
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 34 if (ts_st->pid == ts->services[j]->pmt.pid) {
1238 ✗ av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1239 ✗ return AVERROR(EINVAL);
1240 }
1241 }
1242
2/2
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 35 for (j = 0; j < i; j++) {
1243 1 MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1244
1/2
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 1 if (ts_st_prev->pid == ts_st->pid) {
1245 ✗ av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1246 ✗ return AVERROR(EINVAL);
1247 }
1248 }
1249 34 ts_st->payload_pts = AV_NOPTS_VALUE;
1250 34 ts_st->payload_dts = AV_NOPTS_VALUE;
1251 34 ts_st->cc = 15;
1252 34 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1253
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 34 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1254 ✗ st->codecpar->extradata_size > 0) {
1255 AVStream *ast;
1256 ✗ ts_st->amux = avformat_alloc_context();
1257 ✗ if (!ts_st->amux) {
1258 ✗ return AVERROR(ENOMEM);
1259 }
1260 ✗ ts_st->amux->oformat =
1261 ✗ av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1262 NULL, NULL);
1263 ✗ if (!ts_st->amux->oformat) {
1264 ✗ return AVERROR(EINVAL);
1265 }
1266 ✗ if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1267 ✗ return AVERROR(ENOMEM);
1268 }
1269 ✗ ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1270 ✗ if (ret != 0)
1271 ✗ return ret;
1272 ✗ ast->time_base = st->time_base;
1273 ✗ ret = avformat_write_header(ts_st->amux, NULL);
1274 ✗ if (ret < 0)
1275 ✗ return ret;
1276 }
1277
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 34 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1278 ✗ ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1279 }
1280 }
1281
1282
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 33 if (ts->copyts < 1)
1283 33 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1284
1285 33 select_pcr_streams(s);
1286
1287 33 ts->last_pat_ts = AV_NOPTS_VALUE;
1288 33 ts->last_sdt_ts = AV_NOPTS_VALUE;
1289 33 ts->last_nit_ts = AV_NOPTS_VALUE;
1290 33 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1291 33 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1292 33 ts->nit_period = av_rescale(ts->nit_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1293
1294 /* assign provider name */
1295 33 provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
1296
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 33 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
1297
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 33 if (encode_str8(ts->provider_name, provider_name) < 0) {
1298 ✗ av_log(s, AV_LOG_ERROR, "Too long provider name\n");
1299 ✗ return AVERROR(EINVAL);
1300 }
1301
1302
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 33 if (ts->mux_rate == 1)
1303 33 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1304 else
1305 ✗ av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1306 33 av_log(s, AV_LOG_VERBOSE,
1307 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms",
1308 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1309 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1310
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 33 if (ts->flags & MPEGTS_FLAG_NIT)
1311 ✗ av_log(s, AV_LOG_VERBOSE, ", nit every %"PRId64" ms", av_rescale(ts->nit_period, 1000, PCR_TIME_BASE));
1312 33 av_log(s, AV_LOG_VERBOSE, "\n");
1313
1314 33 return 0;
1315 }
1316
1317 /* send SDT, NIT, PAT and PMT tables regularly */
1318 80707 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int force_nit, int64_t pcr)
1319 {
1320 80707 MpegTSWrite *ts = s->priv_data;
1321 int i;
1322
1323
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 80707 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1324
4/4
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✓ Branch 3 taken 80517 times.
 80674 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1325 force_sdt
1326 ) {
1327
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✗ Branch 1 not taken.
 190 if (pcr != AV_NOPTS_VALUE)
1328 190 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1329 190 mpegts_write_sdt(s);
1330 }
1331
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 80707 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1332
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 80674 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1333 force_pat) {
1334
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 578 if (pcr != AV_NOPTS_VALUE)
1335 578 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1336 578 mpegts_write_pat(s);
1337
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 1156 for (i = 0; i < ts->nb_services; i++)
1338 578 mpegts_write_pmt(s, ts->services[i]);
1339 }
1340
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 80707 if ((pcr != AV_NOPTS_VALUE && ts->last_nit_ts == AV_NOPTS_VALUE) ||
1341
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 80674 (pcr != AV_NOPTS_VALUE && pcr - ts->last_nit_ts >= ts->nit_period) ||
1342 force_nit
1343 ) {
1344
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✗ Branch 1 not taken.
 480 if (pcr != AV_NOPTS_VALUE)
1345 480 ts->last_nit_ts = FFMAX(pcr, ts->last_nit_ts);
1346
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 480 if (ts->flags & MPEGTS_FLAG_NIT)
1347 ✗ mpegts_write_nit(s);
1348 }
1349 80707 }
1350
1351 5096 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1352 {
1353 5096 int64_t pcr_low = pcr % SYSTEM_CLOCK_FREQUENCY_DIVISOR, pcr_high = pcr / SYSTEM_CLOCK_FREQUENCY_DIVISOR;
1354
1355 5096 *buf++ = pcr_high >> 25;
1356 5096 *buf++ = pcr_high >> 17;
1357 5096 *buf++ = pcr_high >> 9;
1358 5096 *buf++ = pcr_high >> 1;
1359 5096 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1360 5096 *buf++ = pcr_low;
1361
1362 5096 return 6;
1363 }
1364
1365 /* Write a single null transport stream packet */
1366 154 static void mpegts_insert_null_packet(AVFormatContext *s)
1367 {
1368 uint8_t *q;
1369 uint8_t buf[TS_PACKET_SIZE];
1370
1371 154 q = buf;
1372 154 *q++ = SYNC_BYTE;
1373 154 *q++ = 0x00 | (NULL_PID >> 8);
1374 154 *q++ = NULL_PID & 0xff;
1375 154 *q++ = 0x10;
1376 154 memset(q, STUFFING_BYTE, TS_PACKET_SIZE - (q - buf)); /* data_bytes may be assigned any value */
1377 154 write_packet(s, buf);
1378 154 }
1379
1380 /* Write a single transport stream packet with a PCR and no payload */
1381 ✗ static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1382 {
1383 ✗ MpegTSWrite *ts = s->priv_data;
1384 ✗ MpegTSWriteStream *ts_st = st->priv_data;
1385 uint8_t *q;
1386 uint8_t buf[TS_PACKET_SIZE];
1387
1388 ✗ q = buf;
1389 ✗ *q++ = SYNC_BYTE;
1390 ✗ *q++ = ts_st->pid >> 8;
1391 ✗ *q++ = ts_st->pid;
1392 ✗ *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1393 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1394 ✗ *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1395 ✗ *q++ = 0x10; /* Adaptation flags: PCR present */
1396 ✗ if (ts_st->discontinuity) {
1397 ✗ q[-1] |= 0x80;
1398 ✗ ts_st->discontinuity = 0;
1399 }
1400
1401 /* PCR coded into 6 bytes */
1402 ✗ q += write_pcr_bits(q, get_pcr(ts));
1403
1404 /* stuffing bytes */
1405 ✗ memset(q, STUFFING_BYTE, TS_PACKET_SIZE - (q - buf));
1406 ✗ write_packet(s, buf);
1407 ✗ }
1408
1409 5307 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1410 {
1411 int val;
1412
1413 5307 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1414 5307 *q++ = val;
1415 5307 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1416 5307 *q++ = val >> 8;
1417 5307 *q++ = val;
1418 5307 val = (((pts) & 0x7fff) << 1) | 1;
1419 5307 *q++ = val >> 8;
1420 5307 *q++ = val;
1421 5307 }
1422
1423 /* Set an adaptation field flag in an MPEG-TS packet*/
1424 10122 static void set_af_flag(uint8_t *pkt, int flag)
1425 {
1426 // expect at least one flag to set
1427
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 10122 av_assert0(flag);
1428
1429
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 10122 if ((pkt[3] & 0x20) == 0) {
1430 // no AF yet, set adaptation field flag
1431 5099 pkt[3] |= 0x20;
1432 // 1 byte length, no flags
1433 5099 pkt[4] = 1;
1434 5099 pkt[5] = 0;
1435 }
1436 10122 pkt[5] |= flag;
1437 10122 }
1438
1439 /* Extend the adaptation field by size bytes */
1440 5096 static void extend_af(uint8_t *pkt, int size)
1441 {
1442 // expect already existing adaptation field
1443
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 5096 av_assert0(pkt[3] & 0x20);
1444 5096 pkt[4] += size;
1445 5096 }
1446
1447 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1448 15218 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1449 {
1450
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 15218 if (pkt[3] & 0x20)
1451 15218 return pkt + 5 + pkt[4];
1452 else
1453 ✗ return pkt + 4;
1454 }
1455
1456 5168 static int get_pes_stream_id(AVFormatContext *s, AVStream *st, int stream_id, int *async)
1457 {
1458 5168 MpegTSWrite *ts = s->priv_data;
1459 5168 *async = 0;
1460
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 5168 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1461
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 169 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1462 ✗ return STREAM_ID_EXTENDED_STREAM_ID;
1463 else
1464 169 return STREAM_ID_VIDEO_STREAM_0;
1465
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 4999 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1466
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 4999 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1467
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 833 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1468
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 833 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1469 4166 return STREAM_ID_AUDIO_STREAM_0;
1470
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 833 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1471
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 833 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1472 ✗ ts->m2ts_mode) {
1473 ✗ return STREAM_ID_EXTENDED_STREAM_ID;
1474
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 833 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1475 ✗ st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1476 ✗ return STREAM_ID_PRIVATE_STREAM_1;
1477
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 833 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1478 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV &&
1479 stream_id == STREAM_ID_PRIVATE_STREAM_1) /* asynchronous KLV */
1480 ✗ *async = 1;
1481 ✗ return stream_id != -1 ? stream_id : STREAM_ID_METADATA_STREAM;
1482 } else {
1483 833 return STREAM_ID_PRIVATE_STREAM_1;
1484 }
1485 }
1486
1487 /* Add a PES header to the front of the payload, and segment into an integer
1488 * number of TS packets. The final TS packet is padded using an oversized
1489 * adaptation header to exactly fill the last TS packet.
1490 * NOTE: 'payload' contains a complete PES payload. */
1491 5168 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1492 const uint8_t *payload, int payload_size,
1493 int64_t pts, int64_t dts, int key, int stream_id)
1494 {
1495 5168 MpegTSWriteStream *ts_st = st->priv_data;
1496 5168 MpegTSWrite *ts = s->priv_data;
1497 uint8_t buf[TS_PACKET_SIZE];
1498 uint8_t *q;
1499 int val, is_start, len, header_len, write_pcr, flags;
1500 int afc_len, stuffing_len;
1501 5168 int is_dvb_subtitle = (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE);
1502 5168 int is_dvb_teletext = (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT);
1503 5168 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1504
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 5168 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1505 5168 int force_sdt = 0;
1506 5168 int force_nit = 0;
1507
1508
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 5168 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1509
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 5168 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1510 ✗ force_pat = 1;
1511 }
1512
1513
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 5168 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1514 86 force_pat = 1;
1515 86 force_sdt = 1;
1516 86 force_nit = 1;
1517 86 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1518 }
1519
1520 5168 is_start = 1;
1521
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 85875 while (payload_size > 0) {
1522 80707 int64_t pcr = AV_NOPTS_VALUE;
1523
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 80707 if (ts->mux_rate > 1)
1524 ✗ pcr = get_pcr(ts);
1525
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 80707 else if (dts != AV_NOPTS_VALUE)
1526 80707 pcr = (dts - delay) * SYSTEM_CLOCK_FREQUENCY_DIVISOR;
1527
1528 80707 retransmit_si_info(s, force_pat, force_sdt, force_nit, pcr);
1529 80707 force_pat = 0;
1530 80707 force_sdt = 0;
1531 80707 force_nit = 0;
1532
1533 80707 write_pcr = 0;
1534
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 80707 if (ts->mux_rate > 1) {
1535 /* Send PCR packets for all PCR streams if needed */
1536 ✗ pcr = get_pcr(ts);
1537 ✗ if (pcr >= ts->next_pcr) {
1538 ✗ int64_t next_pcr = INT64_MAX;
1539 ✗ for (int i = 0; i < s->nb_streams; i++) {
1540 /* Make the current stream the last, because for that we
1541 * can insert the pcr into the payload later */
1542 ✗ int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1543 ✗ AVStream *st2 = s->streams[st2_index];
1544 ✗ MpegTSWriteStream *ts_st2 = st2->priv_data;
1545 ✗ if (ts_st2->pcr_period) {
1546 ✗ if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1547 ✗ ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1548 ✗ if (st2 != st) {
1549 ✗ mpegts_insert_pcr_only(s, st2);
1550 ✗ pcr = get_pcr(ts);
1551 } else {
1552 ✗ write_pcr = 1;
1553 }
1554 }
1555 ✗ next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1556 }
1557 }
1558 ✗ ts->next_pcr = next_pcr;
1559 }
1560 ✗ if (dts != AV_NOPTS_VALUE && (dts - pcr / SYSTEM_CLOCK_FREQUENCY_DIVISOR) > delay) {
1561 /* pcr insert gets priority over null packet insert */
1562 ✗ if (write_pcr)
1563 ✗ mpegts_insert_pcr_only(s, st);
1564 else
1565 ✗ mpegts_insert_null_packet(s);
1566 /* recalculate write_pcr and possibly retransmit si_info */
1567 ✗ continue;
1568 }
1569
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 80707 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1570
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 80662 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1571 2957 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1572 2957 write_pcr = 1;
1573 }
1574 }
1575
1576 /* prepare packet header */
1577 80707 q = buf;
1578 80707 *q++ = SYNC_BYTE;
1579 80707 val = ts_st->pid >> 8;
1580
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 80707 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1581 ✗ val |= 0x20;
1582
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 80707 if (is_start)
1583 5168 val |= 0x40;
1584 80707 *q++ = val;
1585 80707 *q++ = ts_st->pid;
1586 80707 ts_st->cc = (ts_st->cc + 1) & 0xf;
1587 80707 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1588
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 80707 if (ts_st->discontinuity) {
1589 ✗ set_af_flag(buf, 0x80);
1590 ✗ q = get_ts_payload_start(buf);
1591 ✗ ts_st->discontinuity = 0;
1592 }
1593
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 80707 if (!(ts->flags & MPEGTS_FLAG_OMIT_RAI) &&
1594
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 77950 key && is_start && pts != AV_NOPTS_VALUE &&
1595 !is_dvb_teletext /* adaptation+payload forbidden for teletext (ETSI EN 300 472 V1.3.1 4.1) */) {
1596 // set Random Access for key frames
1597
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 5026 if (ts_st->pcr_period)
1598 5023 write_pcr = 1;
1599 5026 set_af_flag(buf, 0x40);
1600 5026 q = get_ts_payload_start(buf);
1601 }
1602
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 80707 if (write_pcr) {
1603 5096 set_af_flag(buf, 0x10);
1604 5096 q = get_ts_payload_start(buf);
1605 // add 11, pcr references the last byte of program clock reference base
1606
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 5096 if (dts != AV_NOPTS_VALUE && dts < pcr / SYSTEM_CLOCK_FREQUENCY_DIVISOR)
1607 ✗ av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1608 5096 extend_af(buf, write_pcr_bits(q, pcr));
1609 5096 q = get_ts_payload_start(buf);
1610 }
1611
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 80707 if (is_start) {
1612 5168 int pes_extension = 0;
1613 5168 int pes_header_stuffing_bytes = 0;
1614 int async;
1615 /* write PES header */
1616 5168 *q++ = 0x00;
1617 5168 *q++ = 0x00;
1618 5168 *q++ = 0x01;
1619 5168 *q++ = stream_id = get_pes_stream_id(s, st, stream_id, &async);
1620
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 5168 if (async)
1621 ✗ pts = dts = AV_NOPTS_VALUE;
1622
1623 5168 header_len = 0;
1624
1625
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 5168 if (stream_id != STREAM_ID_PROGRAM_STREAM_MAP &&
1626
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 5168 stream_id != STREAM_ID_PADDING_STREAM &&
1627
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 5168 stream_id != STREAM_ID_PRIVATE_STREAM_2 &&
1628
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 5168 stream_id != STREAM_ID_ECM_STREAM &&
1629
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 5168 stream_id != STREAM_ID_EMM_STREAM &&
1630
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 5168 stream_id != STREAM_ID_PROGRAM_STREAM_DIRECTORY &&
1631
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 5168 stream_id != STREAM_ID_DSMCC_STREAM &&
1632 stream_id != STREAM_ID_TYPE_E_STREAM) {
1633
1634 5168 flags = 0;
1635
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 5168 if (pts != AV_NOPTS_VALUE) {
1636 5168 header_len += 5;
1637 5168 flags |= 0x80;
1638 }
1639
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 5168 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1640 139 header_len += 5;
1641 139 flags |= 0x40;
1642 }
1643
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 5168 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1644
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 169 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1645 /* set PES_extension_flag */
1646 ✗ pes_extension = 1;
1647 ✗ flags |= 0x01;
1648
1649 /* One byte for PES2 extension flag +
1650 * one byte for extension length +
1651 * one byte for extension id */
1652 ✗ header_len += 3;
1653 }
1654 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1655 * otherwise it will not play sound on blu-ray
1656 */
1657
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 5168 if (ts->m2ts_mode &&
1658
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 767 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1659
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 767 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1660 /* set PES_extension_flag */
1661 ✗ pes_extension = 1;
1662 ✗ flags |= 0x01;
1663 ✗ header_len += 3;
1664 }
1665
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 5168 if (is_dvb_teletext) {
1666 ✗ pes_header_stuffing_bytes = 0x24 - header_len;
1667 ✗ header_len = 0x24;
1668 }
1669 5168 len = payload_size + header_len + 3;
1670 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1671
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 5168 if (is_dvb_subtitle) {
1672 ✗ len += 3;
1673 ✗ payload_size++;
1674 }
1675
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 5168 if (len > 0xffff)
1676 ✗ len = 0;
1677
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 5168 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1678 169 len = 0;
1679 }
1680 5168 *q++ = len >> 8;
1681 5168 *q++ = len;
1682 5168 val = 0x80;
1683 /* data alignment indicator is required for subtitle and data streams */
1684
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 5168 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1685 ✗ val |= 0x04;
1686 5168 *q++ = val;
1687 5168 *q++ = flags;
1688 5168 *q++ = header_len;
1689
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 5168 if (pts != AV_NOPTS_VALUE) {
1690 5168 write_pts(q, flags >> 6, pts);
1691 5168 q += 5;
1692 }
1693
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 5168 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1694 139 write_pts(q, 1, dts);
1695 139 q += 5;
1696 }
1697
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 5168 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1698 ✗ flags = 0x01; /* set PES_extension_flag_2 */
1699 ✗ *q++ = flags;
1700 ✗ *q++ = 0x80 | 0x01; /* marker bit + extension length */
1701 /* Set the stream ID extension flag bit to 0 and
1702 * write the extended stream ID. */
1703 ✗ *q++ = 0x00 | 0x60;
1704 }
1705 /* For Blu-ray AC3 Audio Setting extended flags */
1706
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 5168 if (ts->m2ts_mode &&
1707 ✗ pes_extension &&
1708 ✗ st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1709 ✗ flags = 0x01; /* set PES_extension_flag_2 */
1710 ✗ *q++ = flags;
1711 ✗ *q++ = 0x80 | 0x01; /* marker bit + extension length */
1712 ✗ *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1713 }
1714
1715
1716
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 5168 if (is_dvb_subtitle) {
1717 /* First two fields of DVB subtitles PES data:
1718 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1719 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1720 ✗ *q++ = 0x20;
1721 ✗ *q++ = 0x00;
1722 }
1723
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 5168 if (is_dvb_teletext) {
1724 ✗ memset(q, STUFFING_BYTE, pes_header_stuffing_bytes);
1725 ✗ q += pes_header_stuffing_bytes;
1726 }
1727 } else {
1728 ✗ len = payload_size;
1729 ✗ *q++ = len >> 8;
1730 ✗ *q++ = len;
1731 }
1732 5168 is_start = 0;
1733 }
1734 /* header size */
1735 80707 header_len = q - buf;
1736 /* data len */
1737 80707 len = TS_PACKET_SIZE - header_len;
1738
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 80707 if (len > payload_size)
1739 5167 len = payload_size;
1740 80707 stuffing_len = TS_PACKET_SIZE - header_len - len;
1741
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 80707 if (stuffing_len > 0) {
1742 /* add stuffing with AFC */
1743
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 5167 if (buf[3] & 0x20) {
1744 /* stuffing already present: increase its size */
1745 2 afc_len = buf[4] + 1;
1746 2 memmove(buf + 4 + afc_len + stuffing_len,
1747 2 buf + 4 + afc_len,
1748 2 header_len - (4 + afc_len));
1749 2 buf[4] += stuffing_len;
1750 2 memset(buf + 4 + afc_len, STUFFING_BYTE, stuffing_len);
1751 } else {
1752 /* add stuffing */
1753 5165 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1754 5165 buf[3] |= 0x20;
1755 5165 buf[4] = stuffing_len - 1;
1756
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 5165 if (stuffing_len >= 2) {
1757 5163 buf[5] = 0x00;
1758 5163 memset(buf + 6, STUFFING_BYTE, stuffing_len - 2);
1759 }
1760 }
1761 }
1762
1763
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 80707 if (is_dvb_subtitle && payload_size == len) {
1764 ✗ memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1765 ✗ buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1766 } else {
1767 80707 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1768 }
1769
1770 80707 payload += len;
1771 80707 payload_size -= len;
1772 80707 write_packet(s, buf);
1773 }
1774 5168 ts_st->prev_payload_key = key;
1775 5168 }
1776
1777 205 static int check_h26x_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt, const char *codec)
1778 {
1779
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 205 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1780 ✗ if (!st->nb_frames) {
1781 ✗ av_log(s, AV_LOG_ERROR, "%s bitstream malformed, "
1782 "no startcode found, use the video bitstream filter '%s_mp4toannexb' to fix it "
1783 "('-bsf:v %s_mp4toannexb' option with ffmpeg)\n", codec, codec, codec);
1784 ✗ return AVERROR_INVALIDDATA;
1785 }
1786 ✗ av_log(s, AV_LOG_WARNING, "%s bitstream error, startcode missing, size %d", codec, pkt->size);
1787 ✗ if (pkt->size)
1788 ✗ av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1789 ✗ av_log(s, AV_LOG_WARNING, "\n");
1790 }
1791 205 return 0;
1792 }
1793
1794 205 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1795 {
1796 205 return check_h26x_startcode(s, st, pkt, "h264");
1797 }
1798
1799 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1800 * Released under the LGPL v2.1+, written by
1801 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1802 */
1803 ✗ static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1804 {
1805 static const int durations[32] = {
1806 480, 960, 1920, 2880, /* Silk NB */
1807 480, 960, 1920, 2880, /* Silk MB */
1808 480, 960, 1920, 2880, /* Silk WB */
1809 480, 960, /* Hybrid SWB */
1810 480, 960, /* Hybrid FB */
1811 120, 240, 480, 960, /* CELT NB */
1812 120, 240, 480, 960, /* CELT NB */
1813 120, 240, 480, 960, /* CELT NB */
1814 120, 240, 480, 960, /* CELT NB */
1815 };
1816 int toc, frame_duration, nframes, duration;
1817
1818 ✗ if (pkt->size < 1)
1819 ✗ return 0;
1820
1821 ✗ toc = pkt->data[0];
1822
1823 ✗ frame_duration = durations[toc >> 3];
1824 ✗ switch (toc & 3) {
1825 ✗ case 0:
1826 ✗ nframes = 1;
1827 ✗ break;
1828 ✗ case 1:
1829 ✗ nframes = 2;
1830 ✗ break;
1831 ✗ case 2:
1832 ✗ nframes = 2;
1833 ✗ break;
1834 ✗ case 3:
1835 ✗ if (pkt->size < 2)
1836 ✗ return 0;
1837 ✗ nframes = pkt->data[1] & 63;
1838 ✗ break;
1839 }
1840
1841 ✗ duration = nframes * frame_duration;
1842 ✗ if (duration > 5760) {
1843 ✗ av_log(s, AV_LOG_WARNING,
1844 "Opus packet duration > 120 ms, invalid");
1845 ✗ return 0;
1846 }
1847
1848 ✗ return duration;
1849 }
1850
1851 ✗ static uint8_t *h26x_prefix_aud(const uint8_t *aud, const int aud_size,
1852 const uint8_t *extra_data, const int extra_size, AVPacket *pkt, int *size)
1853 {
1854 ✗ const int sz = 4; //start code size
1855 ✗ uint8_t *data = av_malloc(pkt->size + sz + aud_size + extra_size);
1856 ✗ if (!data)
1857 ✗ return NULL;
1858 ✗ AV_WB32(data, 0x00000001);
1859 ✗ memcpy(data + sz, aud, aud_size);
1860 ✗ memcpy(data + sz + aud_size, extra_data, extra_size);
1861 ✗ memcpy(data + sz + aud_size + extra_size, pkt->data, pkt->size);
1862 ✗ *size = pkt->size + sz + aud_size + extra_size;
1863 ✗ return data;
1864 }
1865
1866 #define H264_NAL_TYPE(state) (state & 0x1f)
1867 #define HEVC_NAL_TYPE(state) ((state & 0x7e) >> 1)
1868 #define VVC_NAL_TYPE(state) ((state >> 11) & 0x1f)
1869 9315 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1870 {
1871 9315 AVStream *st = s->streams[pkt->stream_index];
1872 9315 int size = pkt->size;
1873 9315 const uint8_t *buf = pkt->data;
1874 9315 uint8_t *data = NULL;
1875 9315 MpegTSWrite *ts = s->priv_data;
1876 9315 MpegTSWriteStream *ts_st = st->priv_data;
1877 9315 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1878 9315 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1879 9315 int64_t dts = pkt->dts, pts = pkt->pts;
1880 9315 int opus_samples = 0;
1881 9315 int stream_id = -1;
1882
1883 9315 uint8_t *stream_id_p = av_packet_get_side_data(pkt,
1884 AV_PKT_DATA_MPEGTS_STREAM_ID,
1885 NULL);
1886
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 9315 if (stream_id_p)
1887 ✗ stream_id = stream_id_p[0];
1888
1889
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 9315 if (!ts->first_dts_checked && dts != AV_NOPTS_VALUE) {
1890 33 ts->first_pcr += dts * SYSTEM_CLOCK_FREQUENCY_DIVISOR;
1891 33 ts->first_dts_checked = 1;
1892 }
1893
1894
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 9315 if (ts->copyts < 1) {
1895
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 9315 if (pts != AV_NOPTS_VALUE)
1896 9315 pts += delay;
1897
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 9315 if (dts != AV_NOPTS_VALUE)
1898 9315 dts += delay;
1899 }
1900
1901
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 9315 if (!ts_st->first_timestamp_checked && (pts == AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE)) {
1902 ✗ av_log(s, AV_LOG_ERROR, "first pts and dts value must be set\n");
1903 ✗ return AVERROR_INVALIDDATA;
1904 }
1905 9315 ts_st->first_timestamp_checked = 1;
1906
1907
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 9315 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1908 126 const uint8_t *p = buf, *buf_end = p + size;
1909 126 const uint8_t *found_aud = NULL, *found_aud_end = NULL;
1910 int nal_type;
1911 126 uint32_t state = -1;
1912
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 126 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1913 126 int ret = ff_check_h264_startcode(s, st, pkt);
1914
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 126 if (ret < 0)
1915 ✗ return ret;
1916
1917
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 126 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1918 6 extradd = 0;
1919
1920 /* Ensure that all pictures are prefixed with an AUD, and that
1921 * IDR pictures are also prefixed with SPS and PPS. SPS and PPS
1922 * are assumed to be available in 'extradata' if not found in-band. */
1923 do {
1924 127 p = avpriv_find_start_code(p, buf_end, &state);
1925 127 nal_type = H264_NAL_TYPE(state);
1926 127 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", nal_type);
1927
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 127 if (nal_type == H264_NAL_SPS)
1928 ✗ extradd = 0;
1929
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 127 if (nal_type == H264_NAL_AUD) {
1930 126 found_aud = p - 4; // start of the 0x000001 start code.
1931 126 found_aud_end = p + 1; // first byte past the AUD.
1932
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 126 if (found_aud < buf)
1933 ✗ found_aud = buf;
1934
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 126 if (buf_end < found_aud_end)
1935 ✗ found_aud_end = buf_end;
1936 }
1937 } while (p < buf_end
1938
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 127 && nal_type != H264_NAL_IDR_SLICE
1939
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 127 && nal_type != H264_NAL_SLICE
1940
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 254 && (extradd > 0 || !found_aud));
1941
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 126 if (nal_type != H264_NAL_IDR_SLICE)
1942 126 extradd = 0;
1943
1944
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 126 if (!found_aud) {
1945 /* Prefix 'buf' with the missing AUD, and extradata if needed. */
1946 ✗ const uint8_t aud[] = {
1947 H264_NAL_AUD,
1948 0xf0, // any slice type (0xe) + rbsp stop one bit
1949 };
1950 ✗ buf = data = h26x_prefix_aud(aud, FF_ARRAY_ELEMS(aud),
1951 ✗ st->codecpar->extradata, extradd, pkt, &size);
1952 ✗ if (!data)
1953 ✗ return AVERROR(ENOMEM);
1954
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 126 } else if (extradd != 0) {
1955 /* Move the AUD up to the beginning of the frame, where the H.264
1956 * spec requires it to appear. Emit the extradata after it. */
1957 PutByteContext pb;
1958 ✗ const int new_pkt_size = pkt->size + 1 + extradd;
1959 ✗ data = av_malloc(new_pkt_size);
1960 ✗ if (!data)
1961 ✗ return AVERROR(ENOMEM);
1962 ✗ bytestream2_init_writer(&pb, data, new_pkt_size);
1963 ✗ bytestream2_put_byte(&pb, 0x00);
1964 ✗ bytestream2_put_buffer(&pb, found_aud, found_aud_end - found_aud);
1965 ✗ bytestream2_put_buffer(&pb, st->codecpar->extradata, extradd);
1966 ✗ bytestream2_put_buffer(&pb, pkt->data, found_aud - pkt->data);
1967 ✗ bytestream2_put_buffer(&pb, found_aud_end, buf_end - found_aud_end);
1968 ✗ av_assert0(new_pkt_size == bytestream2_tell_p(&pb));
1969 ✗ buf = data;
1970 ✗ size = new_pkt_size;
1971 }
1972
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 9189 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1973 ✗ if (pkt->size < 2) {
1974 ✗ av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1975 ✗ return AVERROR_INVALIDDATA;
1976 }
1977 ✗ if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1978 int ret;
1979 ✗ AVPacket *pkt2 = ts->pkt;
1980
1981 ✗ if (!ts_st->amux) {
1982 ✗ av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1983 "and extradata missing\n");
1984 } else {
1985 ✗ av_packet_unref(pkt2);
1986 ✗ pkt2->data = pkt->data;
1987 ✗ pkt2->size = pkt->size;
1988 ✗ av_assert0(pkt->dts != AV_NOPTS_VALUE);
1989 ✗ pkt2->dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1990
1991 ✗ ret = avio_open_dyn_buf(&ts_st->amux->pb);
1992 ✗ if (ret < 0)
1993 ✗ return ret;
1994
1995 ✗ ret = av_write_frame(ts_st->amux, pkt2);
1996 ✗ if (ret < 0) {
1997 ✗ ffio_free_dyn_buf(&ts_st->amux->pb);
1998 ✗ return ret;
1999 }
2000 ✗ size = avio_close_dyn_buf(ts_st->amux->pb, &data);
2001 ✗ ts_st->amux->pb = NULL;
2002 ✗ buf = data;
2003 }
2004 }
2005
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 9189 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
2006 ✗ const uint8_t *p = buf, *buf_end = p + size;
2007 ✗ uint32_t state = -1;
2008 int nal_type;
2009 ✗ int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
2010 ✗ int ret = check_h26x_startcode(s, st, pkt, "hevc");
2011 ✗ if (ret < 0)
2012 ✗ return ret;
2013
2014 ✗ if (extradd && AV_RB24(st->codecpar->extradata) > 1)
2015 ✗ extradd = 0;
2016
2017 do {
2018 ✗ p = avpriv_find_start_code(p, buf_end, &state);
2019 ✗ nal_type = HEVC_NAL_TYPE(state);
2020 ✗ av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", nal_type);
2021 ✗ if (nal_type == HEVC_NAL_VPS)
2022 ✗ extradd = 0;
2023 ✗ } while (p < buf_end && nal_type != HEVC_NAL_AUD && nal_type >= HEVC_NAL_VPS);
2024
2025 ✗ if (nal_type < HEVC_NAL_BLA_W_LP || nal_type >= HEVC_NAL_RSV_VCL24)
2026 ✗ extradd = 0;
2027 ✗ if (nal_type != HEVC_NAL_AUD) { // AUD NAL
2028 ✗ const uint8_t aud[] = {
2029 (HEVC_NAL_AUD << 1),
2030 0x01,
2031 0x50, // any slice type (0x4) + rbsp stop one bit
2032 };
2033 ✗ buf = data = h26x_prefix_aud(aud, FF_ARRAY_ELEMS(aud),
2034 ✗ st->codecpar->extradata, extradd, pkt, &size);
2035 ✗ if (!data)
2036 ✗ return AVERROR(ENOMEM);
2037 }
2038
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 9189 } else if (st->codecpar->codec_id == AV_CODEC_ID_VVC) {
2039 ✗ const uint8_t *p = buf, *buf_end = p + size;
2040 ✗ uint32_t state = -1;
2041 ✗ uint32_t nal_type = -1;
2042 ✗ int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
2043 ✗ int ret = check_h26x_startcode(s, st, pkt, "vvc");
2044 ✗ if (ret < 0)
2045 ✗ return ret;
2046
2047 ✗ if (extradd && AV_RB24(st->codecpar->extradata) > 1)
2048 ✗ extradd = 0;
2049
2050 do {
2051 ✗ p = avpriv_find_start_code(p, buf_end, &state);
2052 // state contains byte behind start code, p points 2 bytes behind start code
2053 ✗ nal_type = VVC_NAL_TYPE(state);
2054 ✗ av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", nal_type );
2055 ✗ if (nal_type == VVC_VPS_NUT)
2056 ✗ extradd = 0;
2057 ✗ } while (p < buf_end && nal_type != VVC_AUD_NUT && nal_type >= VVC_OPI_NUT);
2058
2059 ✗ if (nal_type >= VVC_OPI_NUT)
2060 ✗ extradd = 0;
2061 ✗ if (nal_type != VVC_AUD_NUT) { // AUD NAL
2062 ✗ const uint8_t aud[] = {
2063 0, // forbidden_zero_bit, nuh_reserved_zero_bit, nuh_layer_id
2064 (VVC_AUD_NUT << 3) | 1, // nal_unit_type, nuh_temporal_id_plus1(1)
2065 ✗ (pkt->flags & AV_PKT_FLAG_KEY) << 7 | 0x28, // aud_irap_or_gdr_flag, aud_pic_type(2), rbsp_stop_one_bit
2066 };
2067 ✗ buf = data = h26x_prefix_aud(aud, FF_ARRAY_ELEMS(aud), st->codecpar->extradata, extradd, pkt, &size);
2068 ✗ if (!data)
2069 ✗ return AVERROR(ENOMEM);
2070 }
2071
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 9189 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
2072 ✗ if (pkt->size < 2) {
2073 ✗ av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
2074 ✗ return AVERROR_INVALIDDATA;
2075 }
2076
2077 /* Add Opus control header */
2078 ✗ if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
2079 uint8_t *side_data;
2080 size_t side_data_size;
2081 int i, n;
2082 int ctrl_header_size;
2083 ✗ int trim_start = 0, trim_end = 0;
2084
2085 ✗ opus_samples = opus_get_packet_samples(s, pkt);
2086
2087 ✗ side_data = av_packet_get_side_data(pkt,
2088 AV_PKT_DATA_SKIP_SAMPLES,
2089 &side_data_size);
2090
2091 ✗ if (side_data && side_data_size >= 10) {
2092 ✗ trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
2093 }
2094
2095 ✗ ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
2096 ✗ if (ts_st->opus_pending_trim_start)
2097 ✗ ctrl_header_size += 2;
2098 ✗ if (trim_end)
2099 ✗ ctrl_header_size += 2;
2100
2101 ✗ data = av_malloc(ctrl_header_size);
2102 ✗ if (!data)
2103 ✗ return AVERROR(ENOMEM);
2104
2105 ✗ data[0] = 0x7f;
2106 ✗ data[1] = 0xe0;
2107 ✗ if (ts_st->opus_pending_trim_start)
2108 ✗ data[1] |= 0x10;
2109 ✗ if (trim_end)
2110 ✗ data[1] |= 0x08;
2111
2112 ✗ n = pkt->size;
2113 ✗ i = 2;
2114 do {
2115 ✗ data[i] = FFMIN(n, 255);
2116 ✗ n -= 255;
2117 ✗ i++;
2118 ✗ } while (n >= 0);
2119
2120 ✗ av_assert0(2 + pkt->size / 255 + 1 == i);
2121
2122 ✗ if (ts_st->opus_pending_trim_start) {
2123 ✗ trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
2124 ✗ AV_WB16(data + i, trim_start);
2125 ✗ i += 2;
2126 ✗ ts_st->opus_pending_trim_start -= trim_start;
2127 }
2128 ✗ if (trim_end) {
2129 ✗ trim_end = FFMIN(trim_end, opus_samples - trim_start);
2130 ✗ AV_WB16(data + i, trim_end);
2131 ✗ i += 2;
2132 }
2133
2134 ✗ memcpy(data + i, pkt->data, pkt->size);
2135 ✗ buf = data;
2136 ✗ size = ctrl_header_size;
2137 } else {
2138 /* TODO: Can we get TS formatted data here? If so we will
2139 * need to count the samples of that too! */
2140 ✗ av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
2141 }
2142
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 9189 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3 && !ts_st->dvb_ac3_desc) {
2143 ✗ AC3HeaderInfo *hdr = NULL;
2144
2145 ✗ if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) >= 0) {
2146 uint8_t number_of_channels_flag;
2147 uint8_t service_type_flag;
2148 ✗ uint8_t full_service_flag = 1;
2149 DVBAC3Descriptor *dvb_ac3_desc;
2150
2151 ✗ dvb_ac3_desc = av_mallocz(sizeof(*dvb_ac3_desc));
2152 ✗ if (!dvb_ac3_desc) {
2153 ✗ av_free(hdr);
2154 ✗ return AVERROR(ENOMEM);
2155 }
2156
2157 ✗ service_type_flag = hdr->bitstream_mode;
2158 ✗ switch (hdr->channel_mode) {
2159 ✗ case AC3_CHMODE_DUALMONO:
2160 ✗ number_of_channels_flag = 1;
2161 ✗ break;
2162 ✗ case AC3_CHMODE_MONO:
2163 ✗ number_of_channels_flag = 0;
2164 ✗ break;
2165 ✗ case AC3_CHMODE_STEREO:
2166 ✗ if (hdr->dolby_surround_mode == AC3_DSURMOD_ON)
2167 ✗ number_of_channels_flag = 3;
2168 else
2169 ✗ number_of_channels_flag = 2;
2170 ✗ break;
2171 ✗ case AC3_CHMODE_3F:
2172 case AC3_CHMODE_2F1R:
2173 case AC3_CHMODE_3F1R:
2174 case AC3_CHMODE_2F2R:
2175 case AC3_CHMODE_3F2R:
2176 ✗ number_of_channels_flag = 4;
2177 ✗ break;
2178 ✗ default: /* reserved */
2179 ✗ number_of_channels_flag = 7;
2180 ✗ break;
2181 }
2182
2183 ✗ if (service_type_flag == 1 || service_type_flag == 4 ||
2184 ✗ (service_type_flag == 7 && !number_of_channels_flag))
2185 ✗ full_service_flag = 0;
2186
2187 ✗ dvb_ac3_desc->component_type_flag = 1;
2188 ✗ dvb_ac3_desc->component_type = (full_service_flag << 6) |
2189 ✗ ((service_type_flag & 0x7) << 3) |
2190 ✗ (number_of_channels_flag & 0x7);
2191 ✗ dvb_ac3_desc->bsid_flag = 1;
2192 ✗ dvb_ac3_desc->bsid = hdr->bitstream_id;
2193 ✗ dvb_ac3_desc->mainid_flag = 0;
2194 ✗ dvb_ac3_desc->asvc_flag = 0;
2195
2196 ✗ ts_st->dvb_ac3_desc = dvb_ac3_desc;
2197 }
2198 ✗ av_free(hdr);
2199
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 9189 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_BLURAY && ts->m2ts_mode) {
2200 767 mpegts_write_pes(s, st, buf, size, pts, dts,
2201 767 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
2202 767 return 0;
2203 }
2204
2205
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 8548 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
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 4147 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
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 4147 dts - ts_st->payload_dts >= max_audio_delay) ||
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 4147 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
2209 4093 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
2210 ts_st->payload_pts, ts_st->payload_dts,
2211 4093 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
2212 4093 ts_st->payload_size = 0;
2213 4093 ts_st->opus_queued_samples = 0;
2214 }
2215
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 8548 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
2217
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 234 av_assert0(!ts_st->payload_size);
2218 // for video and subtitle, write a single pes packet
2219 234 mpegts_write_pes(s, st, buf, size, pts, dts,
2220 234 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
2221 234 ts_st->opus_queued_samples = 0;
2222 234 av_free(data);
2223 234 return 0;
2224 }
2225
2226
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 8314 if (!ts_st->payload_size) {
2227 4167 ts_st->payload_pts = pts;
2228 4167 ts_st->payload_dts = dts;
2229 4167 ts_st->payload_flags = pkt->flags;
2230 }
2231
2232 8314 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
2233 8314 ts_st->payload_size += size;
2234 8314 ts_st->opus_queued_samples += opus_samples;
2235
2236 8314 av_free(data);
2237
2238 8314 return 0;
2239 }
2240
2241 192 static void mpegts_write_flush(AVFormatContext *s)
2242 {
2243 192 MpegTSWrite *ts = s->priv_data;
2244 int i;
2245
2246 /* flush current packets */
2247
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 385 for (i = 0; i < s->nb_streams; i++) {
2248 193 AVStream *st = s->streams[i];
2249 193 MpegTSWriteStream *ts_st = st->priv_data;
2250
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 193 if (ts_st->payload_size > 0) {
2251 74 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
2252 ts_st->payload_pts, ts_st->payload_dts,
2253 74 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
2254 74 ts_st->payload_size = 0;
2255 74 ts_st->opus_queued_samples = 0;
2256 }
2257 }
2258
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 192 if (ts->m2ts_mode) {
2260 6 int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
2261
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 160 while (packets++ < 32)
2262 154 mpegts_insert_null_packet(s);
2263 }
2264 192 }
2265
2266 9474 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
2267 {
2268
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 9474 if (!pkt) {
2269 159 mpegts_write_flush(s);
2270 159 return 1;
2271 } else {
2272 9315 return mpegts_write_packet_internal(s, pkt);
2273 }
2274 }
2275
2276 33 static int mpegts_write_end(AVFormatContext *s)
2277 {
2278
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 33 if (s->pb)
2279 33 mpegts_write_flush(s);
2280
2281 33 return 0;
2282 }
2283
2284 33 static void mpegts_deinit(AVFormatContext *s)
2285 {
2286 33 MpegTSWrite *ts = s->priv_data;
2287 MpegTSService *service;
2288 int i;
2289
2290
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 67 for (i = 0; i < s->nb_streams; i++) {
2291 34 AVStream *st = s->streams[i];
2292 34 MpegTSWriteStream *ts_st = st->priv_data;
2293
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 34 if (ts_st) {
2294 34 av_freep(&ts_st->dvb_ac3_desc);
2295 34 av_freep(&ts_st->payload);
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 34 if (ts_st->amux) {
2297 ✗ avformat_free_context(ts_st->amux);
2298 ✗ ts_st->amux = NULL;
2299 }
2300 }
2301 }
2302
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 66 for (i = 0; i < ts->nb_services; i++) {
2304 33 service = ts->services[i];
2305 33 av_freep(&service);
2306 }
2307 33 av_freep(&ts->services);
2308 33 }
2309
2310 28 static int mpegts_check_bitstream(AVFormatContext *s, AVStream *st,
2311 const AVPacket *pkt)
2312 {
2313 const struct Entry {
2314 enum AVCodecID id;
2315 const char *bsf_name;
2316 uint8_t mask;
2317 uint8_t value;
2318 28 } list[] = {
2319 { AV_CODEC_ID_H264, "h264_mp4toannexb", 0xff, 0x01 /* configurationVersion in AVCDecoderConfigurationRecord */},
2320 { AV_CODEC_ID_HEVC, "hevc_mp4toannexb", 0xff, 0x01 /* configurationVersion in HEVCDecoderConfigurationRecord */},
2321 { AV_CODEC_ID_VVC, "vvc_mp4toannexb", 0xf8, 0xf8 /* reserved '11111'b in VVCDecoderConfigurationRecord */},
2322 };
2323
2324
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 109 for (int i = 0; i < FF_ARRAY_ELEMS(list); i++) {
2325 82 const struct Entry *e = list + i;
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 82 if (e->id == st->codecpar->codec_id &&
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 1 pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2328
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 1 (AV_RB24(pkt->data) != 0x000001 ||
2329 ✗ (st->codecpar->extradata_size > 0 &&
2330 ✗ ((st->codecpar->extradata[0] & e->mask) == e->value))))
2331 1 return ff_stream_add_bitstream_filter(st, e->bsf_name, NULL);
2332 }
2333 27 return 1;
2334 }
2335
2336 #define OFFSET(x) offsetof(MpegTSWrite, x)
2337 #define ENC AV_OPT_FLAG_ENCODING_PARAM
2338 static const AVOption options[] = {
2339 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
2340 OFFSET(transport_stream_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2341 { "mpegts_original_network_id", "Set original_network_id field.",
2342 OFFSET(original_network_id), AV_OPT_TYPE_INT, { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, ENC },
2343 { "mpegts_service_id", "Set service_id field.",
2344 OFFSET(service_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2345 { "mpegts_service_type", "Set service_type field.",
2346 OFFSET(service_type), AV_OPT_TYPE_INT, { .i64 = 0x01 }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2347 { "digital_tv", "Digital Television.",
2348 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2349 { "digital_radio", "Digital Radio.",
2350 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2351 { "teletext", "Teletext.",
2352 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2353 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2354 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2355 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2356 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2357 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2358 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2359 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2360 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2361 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2362 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2363 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2364 OFFSET(pmt_start_pid), AV_OPT_TYPE_INT, { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2365 { "mpegts_start_pid", "Set the first pid.",
2366 OFFSET(start_pid), AV_OPT_TYPE_INT, { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2367 { "mpegts_m2ts_mode", "Enable m2ts mode.", OFFSET(m2ts_mode), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2368 { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
2369 { "pes_payload_size", "Minimum PES packet payload in bytes",
2370 OFFSET(pes_payload_size), AV_OPT_TYPE_INT, { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, ENC },
2371 { "mpegts_flags", "MPEG-TS muxing flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2372 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2373 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2374 { "latm", "Use LATM packetization for AAC",
2375 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2376 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2377 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2378 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2379 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2380 { "initial_discontinuity", "Mark initial packets as discontinuous",
2381 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2382 { "nit", "Enable NIT transmission",
2383 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_NIT}, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2384 { "omit_rai", "Disable writing of random access indicator",
2385 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_OMIT_RAI }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2386 { "mpegts_copyts", "don't offset dts/pts", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2387 { "tables_version", "set PAT, PMT, SDT and NIT version", OFFSET(tables_version), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 31, ENC },
2388 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2389 OFFSET(omit_video_pes_length), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
2390 { "pcr_period", "PCR retransmission time in milliseconds",
2391 OFFSET(pcr_period_ms), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC },
2392 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2393 OFFSET(pat_period_us), AV_OPT_TYPE_DURATION, { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2394 { "sdt_period", "SDT retransmission time limit in seconds",
2395 OFFSET(sdt_period_us), AV_OPT_TYPE_DURATION, { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2396 { "nit_period", "NIT retransmission time limit in seconds",
2397 OFFSET(nit_period_us), AV_OPT_TYPE_DURATION, { .i64 = NIT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2398 { NULL },
2399 };
2400
2401 static const AVClass mpegts_muxer_class = {
2402 .class_name = "MPEGTS muxer",
2403 .item_name = av_default_item_name,
2404 .option = options,
2405 .version = LIBAVUTIL_VERSION_INT,
2406 };
2407
2408 const FFOutputFormat ff_mpegts_muxer = {
2409 .p.name = "mpegts",
2410 .p.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2411 .p.mime_type = "video/MP2T",
2412 .p.extensions = "ts,m2t,m2ts,mts",
2413 .priv_data_size = sizeof(MpegTSWrite),
2414 .p.audio_codec = AV_CODEC_ID_MP2,
2415 .p.video_codec = AV_CODEC_ID_MPEG2VIDEO,
2416 .init = mpegts_init,
2417 .write_packet = mpegts_write_packet,
2418 .write_trailer = mpegts_write_end,
2419 .deinit = mpegts_deinit,
2420 .check_bitstream = mpegts_check_bitstream,
2421 .p.flags = AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2422 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
2423 .p.priv_class = &mpegts_muxer_class,
2424 };
2425