FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/mpegts.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 1199 2104 57.0%
Functions: 51 72 70.8%
Branches: 668 1421 47.0%
Line Branch Exec Source
1 /*
2 * MPEG-2 transport stream (aka DVB) demuxer
3 * Copyright (c) 2002-2003 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 "config_components.h"
23
24 #include "libavutil/attributes_internal.h"
25 #include "libavutil/buffer.h"
26 #include "libavutil/crc.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/log.h"
30 #include "libavutil/dict.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/avassert.h"
34 #include "libavutil/dovi_meta.h"
35 #include "libavcodec/bytestream.h"
36 #include "libavcodec/defs.h"
37 #include "libavcodec/get_bits.h"
38 #include "libavcodec/opus/opus.h"
39 #include "avformat.h"
40 #include "mpegts.h"
41 #include "internal.h"
42 #include "avio_internal.h"
43 #include "demux.h"
44 #include "mpeg.h"
45 #include "isom.h"
46 #if CONFIG_ICONV
47 #include <iconv.h>
48 #endif
49
50 /* maximum size in which we look for synchronization if
51 * synchronization is lost */
52 #define MAX_RESYNC_SIZE 65536
53
54 #define MAX_MP4_DESCR_COUNT 16
55
56 #define MOD_UNLIKELY(modulus, dividend, divisor, prev_dividend) \
57 do { \
58 if ((prev_dividend) == 0 || (dividend) - (prev_dividend) != (divisor)) \
59 (modulus) = (dividend) % (divisor); \
60 (prev_dividend) = (dividend); \
61 } while (0)
62
63 #define PROBE_PACKET_MAX_BUF 8192
64 #define PROBE_PACKET_MARGIN 5
65
66 enum MpegTSFilterType {
67 MPEGTS_PES,
68 MPEGTS_SECTION,
69 MPEGTS_PCR,
70 };
71
72 typedef struct MpegTSFilter MpegTSFilter;
73
74 typedef int PESCallback (MpegTSFilter *f, const uint8_t *buf, int len,
75 int is_start, int64_t pos);
76
77 typedef struct MpegTSPESFilter {
78 PESCallback *pes_cb;
79 void *opaque;
80 } MpegTSPESFilter;
81
82 typedef void SectionCallback (MpegTSFilter *f, const uint8_t *buf, int len);
83
84 typedef void SetServiceCallback (void *opaque, int ret);
85
86 typedef struct MpegTSSectionFilter {
87 int section_index;
88 int section_h_size;
89 int last_ver;
90 unsigned crc;
91 unsigned last_crc;
92 uint8_t *section_buf;
93 unsigned int check_crc : 1;
94 unsigned int end_of_section_reached : 1;
95 SectionCallback *section_cb;
96 void *opaque;
97 } MpegTSSectionFilter;
98
99 struct MpegTSFilter {
100 int pid;
101 int es_id;
102 int last_cc; /* last cc code (-1 if first packet) */
103 int64_t last_pcr;
104 int discard;
105 enum MpegTSFilterType type;
106 union {
107 MpegTSPESFilter pes_filter;
108 MpegTSSectionFilter section_filter;
109 } u;
110 };
111
112 struct Stream {
113 int idx;
114 int stream_identifier;
115 };
116
117 #define MAX_STREAMS_PER_PROGRAM 128
118 #define MAX_PIDS_PER_PROGRAM (MAX_STREAMS_PER_PROGRAM + 2)
119
120 struct StreamGroup {
121 enum AVStreamGroupParamsType type;
122 int id;
123 unsigned int nb_streams;
124 AVStream *streams[MAX_STREAMS_PER_PROGRAM];
125 };
126
127 struct Program {
128 unsigned int id; // program id/service id
129 unsigned int nb_pids;
130 unsigned int pids[MAX_PIDS_PER_PROGRAM];
131 unsigned int nb_streams;
132 struct Stream streams[MAX_STREAMS_PER_PROGRAM];
133 unsigned int nb_stream_groups;
134 struct StreamGroup stream_groups[MAX_STREAMS_PER_PROGRAM];
135
136 /** have we found pmt for this program */
137 int pmt_found;
138 };
139
140 struct MpegTSContext {
141 const AVClass *class;
142 /* user data */
143 AVFormatContext *stream;
144 /** raw packet size, including FEC if present */
145 int raw_packet_size;
146
147 int64_t pos47_full;
148
149 /** if true, all pids are analyzed to find streams */
150 int auto_guess;
151
152 /** compute exact PCR for each transport stream packet */
153 int mpeg2ts_compute_pcr;
154
155 /** fix dvb teletext pts */
156 int fix_teletext_pts;
157
158 int64_t cur_pcr; /**< used to estimate the exact PCR */
159 int64_t pcr_incr; /**< used to estimate the exact PCR */
160
161 /* data needed to handle file based ts */
162 /** stop parsing loop */
163 int stop_parse;
164 /** packet containing Audio/Video data */
165 AVPacket *pkt;
166 /** to detect seek */
167 int64_t last_pos;
168
169 int skip_changes;
170 int skip_clear;
171 int skip_unknown_pmt;
172
173 int scan_all_pmts;
174
175 int resync_size;
176 int merge_pmt_versions;
177 int max_packet_size;
178
179 int id;
180
181 /******************************************/
182 /* private mpegts data */
183 /* scan context */
184 /** structure to keep track of Program->pids mapping */
185 unsigned int nb_prg;
186 struct Program *prg;
187
188 int8_t crc_validity[NB_PID_MAX];
189 /** filters for various streams specified by PMT + for the PAT and PMT */
190 MpegTSFilter *pids[NB_PID_MAX];
191 int current_pid;
192
193 AVStream *epg_stream;
194 AVBufferPool* pools[32];
195 };
196
197 #define MPEGTS_OPTIONS \
198 { "resync_size", "set size limit for looking up a new synchronization", \
199 offsetof(MpegTSContext, resync_size), AV_OPT_TYPE_INT, \
200 { .i64 = MAX_RESYNC_SIZE}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, \
201 { "ts_id", "transport stream id", \
202 offsetof(MpegTSContext, id), AV_OPT_TYPE_INT, \
203 { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, \
204 { "ts_packetsize", "output option carrying the raw packet size", \
205 offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT, \
206 { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }
207
208 static const AVOption options[] = {
209 MPEGTS_OPTIONS,
210 {"fix_teletext_pts", "try to fix pts values of dvb teletext streams", offsetof(MpegTSContext, fix_teletext_pts), AV_OPT_TYPE_BOOL,
211 {.i64 = 1}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
212 {"scan_all_pmts", "scan and combine all PMTs", offsetof(MpegTSContext, scan_all_pmts), AV_OPT_TYPE_BOOL,
213 {.i64 = -1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM },
214 {"skip_unknown_pmt", "skip PMTs for programs not advertised in the PAT", offsetof(MpegTSContext, skip_unknown_pmt), AV_OPT_TYPE_BOOL,
215 {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
216 {"merge_pmt_versions", "reuse streams when PMT's version/pids change", offsetof(MpegTSContext, merge_pmt_versions), AV_OPT_TYPE_BOOL,
217 {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
218 {"skip_changes", "skip changing / adding streams / programs", offsetof(MpegTSContext, skip_changes), AV_OPT_TYPE_BOOL,
219 {.i64 = 0}, 0, 1, 0 },
220 {"skip_clear", "skip clearing programs", offsetof(MpegTSContext, skip_clear), AV_OPT_TYPE_BOOL,
221 {.i64 = 0}, 0, 1, 0 },
222 {"max_packet_size", "maximum size of emitted packet", offsetof(MpegTSContext, max_packet_size), AV_OPT_TYPE_INT,
223 {.i64 = 204800}, 1, INT_MAX/2, AV_OPT_FLAG_DECODING_PARAM },
224 { NULL },
225 };
226
227 static const AVClass mpegts_class = {
228 .class_name = "mpegts demuxer",
229 .item_name = av_default_item_name,
230 .option = options,
231 .version = LIBAVUTIL_VERSION_INT,
232 };
233
234 static const AVOption raw_options[] = {
235 MPEGTS_OPTIONS,
236 { "compute_pcr", "compute exact PCR for each transport stream packet",
237 offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_BOOL,
238 { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
239 { NULL },
240 };
241
242 static const AVClass mpegtsraw_class = {
243 .class_name = "mpegtsraw demuxer",
244 .item_name = av_default_item_name,
245 .option = raw_options,
246 .version = LIBAVUTIL_VERSION_INT,
247 };
248
249 /* TS stream handling */
250
251 enum MpegTSState {
252 MPEGTS_HEADER = 0,
253 MPEGTS_PESHEADER,
254 MPEGTS_PESHEADER_FILL,
255 MPEGTS_PAYLOAD,
256 MPEGTS_SKIP,
257 };
258
259 /* enough for PES header + length */
260 #define PES_START_SIZE 6
261 #define PES_HEADER_SIZE 9
262 #define MAX_PES_HEADER_SIZE (9 + 255)
263
264 typedef struct PESContext {
265 int pid;
266 int pcr_pid; /**< if -1 then all packets containing PCR are considered */
267 int stream_type;
268 MpegTSContext *ts;
269 AVFormatContext *stream;
270 AVStream *st;
271 AVStream *sub_st; /**< stream for the embedded AC3 stream in HDMV TrueHD */
272 enum MpegTSState state;
273 /* used to get the format */
274 int data_index;
275 int flags; /**< copied to the AVPacket flags */
276 int PES_packet_length;
277 int pes_header_size;
278 int extended_stream_id;
279 uint8_t stream_id;
280 int64_t pts, dts;
281 int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
282 uint8_t header[MAX_PES_HEADER_SIZE];
283 AVBufferRef *buffer;
284 SLConfigDescr sl;
285 int merged_st;
286 } PESContext;
287
288 EXTERN const FFInputFormat ff_mpegts_demuxer;
289
290 714 static struct Program * get_program(MpegTSContext *ts, unsigned int programid)
291 {
292 int i;
293
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 714 for (i = 0; i < ts->nb_prg; i++) {
294
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 638 if (ts->prg[i].id == programid) {
295 638 return &ts->prg[i];
296 }
297 }
298 76 return NULL;
299 }
300
301 212 static void clear_avprogram(MpegTSContext *ts, unsigned int programid)
302 {
303 212 AVProgram *prg = NULL;
304 int i;
305
306
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 212 for (i = 0; i < ts->stream->nb_programs; i++)
307
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 212 if (ts->stream->programs[i]->id == programid) {
308 212 prg = ts->stream->programs[i];
309 212 break;
310 }
311
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 212 if (!prg)
312 ✗ return;
313 212 prg->nb_stream_indexes = 0;
314 }
315
316 427 static void clear_program(struct Program *p)
317 {
318
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 427 if (!p)
319 ✗ return;
320 427 p->nb_pids = 0;
321 427 p->nb_streams = 0;
322 427 p->nb_stream_groups = 0;
323 427 memset(p->stream_groups, 0, sizeof(p->stream_groups));
324 427 p->pmt_found = 0;
325 }
326
327 76 static void clear_programs(MpegTSContext *ts)
328 {
329 76 av_freep(&ts->prg);
330 76 ts->nb_prg = 0;
331 76 }
332
333 273 static struct Program * add_program(MpegTSContext *ts, unsigned int programid)
334 {
335 273 struct Program *p = get_program(ts, programid);
336
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 273 if (p)
337 197 return p;
338
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 76 if (av_reallocp_array(&ts->prg, ts->nb_prg + 1, sizeof(*ts->prg)) < 0) {
339 ✗ ts->nb_prg = 0;
340 ✗ return NULL;
341 }
342 76 p = &ts->prg[ts->nb_prg];
343 76 p->id = programid;
344 76 clear_program(p);
345 76 ts->nb_prg++;
346 76 return p;
347 }
348
349 1635 static void add_pid_to_program(struct Program *p, unsigned int pid)
350 {
351 int i;
352
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 1635 if (!p)
353 ✗ return;
354
355
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 1635 if (p->nb_pids >= MAX_PIDS_PER_PROGRAM)
356 ✗ return;
357
358
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 3161 for (i = 0; i < p->nb_pids; i++)
359
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 2080 if (p->pids[i] == pid)
360 554 return;
361
362 1081 p->pids[p->nb_pids++] = pid;
363 }
364
365 351 static void update_av_program_info(AVFormatContext *s, unsigned int programid,
366 unsigned int pid, int version)
367 {
368 int i;
369
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 351 for (i = 0; i < s->nb_programs; i++) {
370 351 AVProgram *program = s->programs[i];
371
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 351 if (program->id == programid) {
372 351 int old_pcr_pid = program->pcr_pid,
373 351 old_version = program->pmt_version;
374 351 program->pcr_pid = pid;
375 351 program->pmt_version = version;
376
377
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 351 if (old_version != -1 && old_version != version) {
378 18 av_log(s, AV_LOG_VERBOSE,
379 "detected PMT change (program=%d, version=%d/%d, pcr_pid=0x%x/0x%x)\n",
380 programid, old_version, version, old_pcr_pid, pid);
381 }
382 351 break;
383 }
384 }
385 351 }
386
387 /**
388 * @brief discard_pid() decides if the pid is to be discarded according
389 * to caller's programs selection
390 * @param ts : - TS context
391 * @param pid : - pid
392 * @return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
393 * 0 otherwise
394 */
395 43024 static int discard_pid(MpegTSContext *ts, unsigned int pid)
396 {
397 int i, j, k;
398 43024 int used = 0, discarded = 0;
399 struct Program *p;
400
401
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 43024 if (pid == PAT_PID)
402 3687 return 0;
403
404 /* If none of the programs have .discard=AVDISCARD_ALL then there's
405 * no way we have to discard this packet */
406
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 78627 for (k = 0; k < ts->stream->nb_programs; k++)
407
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 39290 if (ts->stream->programs[k]->discard == AVDISCARD_ALL)
408 ✗ break;
409
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 39337 if (k == ts->stream->nb_programs)
410 39337 return 0;
411
412 ✗ for (i = 0; i < ts->nb_prg; i++) {
413 ✗ p = &ts->prg[i];
414 ✗ for (j = 0; j < p->nb_pids; j++) {
415 ✗ if (p->pids[j] != pid)
416 ✗ continue;
417 // is program with id p->id set to be discarded?
418 ✗ for (k = 0; k < ts->stream->nb_programs; k++) {
419 ✗ if (ts->stream->programs[k]->id == p->id) {
420 ✗ if (ts->stream->programs[k]->discard == AVDISCARD_ALL)
421 ✗ discarded++;
422 else
423 ✗ used++;
424 }
425 }
426 }
427 }
428
429 ✗ return !used && discarded;
430 }
431
432 /**
433 * Assemble PES packets out of TS packets, and then call the "section_cb"
434 * function when they are complete.
435 */
436 7985 static void write_section_data(MpegTSContext *ts, MpegTSFilter *tss1,
437 const uint8_t *buf, int buf_size, int is_start)
438 {
439 7985 MpegTSSectionFilter *tss = &tss1->u.section_filter;
440 7985 uint8_t *cur_section_buf = NULL;
441 int len, offset;
442
443
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 7985 if (is_start) {
444 7950 memcpy(tss->section_buf, buf, buf_size);
445 7950 tss->section_index = buf_size;
446 7950 tss->section_h_size = -1;
447 7950 tss->end_of_section_reached = 0;
448 } else {
449
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 35 if (tss->end_of_section_reached)
450 ✗ return;
451 35 len = MAX_SECTION_SIZE - tss->section_index;
452
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 35 if (buf_size < len)
453 35 len = buf_size;
454 35 memcpy(tss->section_buf + tss->section_index, buf, len);
455 35 tss->section_index += len;
456 }
457
458 7985 offset = 0;
459 7985 cur_section_buf = tss->section_buf;
460
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 15935 while (cur_section_buf - tss->section_buf < MAX_SECTION_SIZE && cur_section_buf[0] != STUFFING_BYTE) {
461 /* compute section length if possible */
462
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 8193 if (tss->section_h_size == -1 && tss->section_index - offset >= 3) {
463 7985 len = (AV_RB16(cur_section_buf + 1) & 0xfff) + 3;
464
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 7985 if (len > MAX_SECTION_SIZE)
465 ✗ return;
466 7985 tss->section_h_size = len;
467 }
468
469
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 8193 if (tss->section_h_size != -1 &&
470
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 7985 tss->section_index >= offset + tss->section_h_size) {
471 7950 int crc_valid = 1;
472 7950 tss->end_of_section_reached = 1;
473
474
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 7950 if (tss->check_crc) {
475 7950 crc_valid = !av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, cur_section_buf, tss->section_h_size);
476
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 7950 if (tss->section_h_size >= 4)
477 7950 tss->crc = AV_RB32(cur_section_buf + tss->section_h_size - 4);
478
479
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 7950 if (crc_valid) {
480 7950 ts->crc_validity[ tss1->pid ] = 100;
481 ✗ }else if (ts->crc_validity[ tss1->pid ] > -10) {
482 ✗ ts->crc_validity[ tss1->pid ]--;
483 }else
484 ✗ crc_valid = 2;
485 }
486
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 7950 if (crc_valid) {
487 7950 tss->section_cb(tss1, cur_section_buf, tss->section_h_size);
488
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 7950 if (crc_valid != 1)
489 ✗ tss->last_ver = -1;
490 }
491
492 7950 cur_section_buf += tss->section_h_size;
493 7950 offset += tss->section_h_size;
494 7950 tss->section_h_size = -1;
495 } else {
496 243 tss->section_h_size = -1;
497 243 tss->end_of_section_reached = 0;
498 243 break;
499 }
500 }
501 }
502
503 465 static MpegTSFilter *mpegts_open_filter(MpegTSContext *ts, unsigned int pid,
504 enum MpegTSFilterType type)
505 {
506 MpegTSFilter *filter;
507
508 465 av_log(ts->stream, AV_LOG_TRACE, "Filter: pid=0x%x type=%d\n", pid, type);
509
510
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 465 if (pid >= NB_PID_MAX || ts->pids[pid])
511 ✗ return NULL;
512 465 filter = av_mallocz(sizeof(MpegTSFilter));
513
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 465 if (!filter)
514 ✗ return NULL;
515 465 ts->pids[pid] = filter;
516
517 465 filter->type = type;
518 465 filter->pid = pid;
519 465 filter->es_id = -1;
520 465 filter->last_cc = -1;
521 465 filter->last_pcr= -1;
522
523 465 return filter;
524 }
525
526 311 static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts,
527 unsigned int pid,
528 SectionCallback *section_cb,
529 void *opaque,
530 int check_crc)
531 {
532 MpegTSFilter *filter;
533 MpegTSSectionFilter *sec;
534 311 uint8_t *section_buf = av_mallocz(MAX_SECTION_SIZE);
535
536
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 311 if (!section_buf)
537 ✗ return NULL;
538
539
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 311 if (!(filter = mpegts_open_filter(ts, pid, MPEGTS_SECTION))) {
540 ✗ av_free(section_buf);
541 ✗ return NULL;
542 }
543 311 sec = &filter->u.section_filter;
544 311 sec->section_cb = section_cb;
545 311 sec->opaque = opaque;
546 311 sec->section_buf = section_buf;
547 311 sec->check_crc = check_crc;
548 311 sec->last_ver = -1;
549
550 311 return filter;
551 }
552
553 154 static MpegTSFilter *mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid,
554 PESCallback *pes_cb,
555 void *opaque)
556 {
557 MpegTSFilter *filter;
558 MpegTSPESFilter *pes;
559
560
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 154 if (!(filter = mpegts_open_filter(ts, pid, MPEGTS_PES)))
561 ✗ return NULL;
562
563 154 pes = &filter->u.pes_filter;
564 154 pes->pes_cb = pes_cb;
565 154 pes->opaque = opaque;
566 154 return filter;
567 }
568
569 ✗ static MpegTSFilter *mpegts_open_pcr_filter(MpegTSContext *ts, unsigned int pid)
570 {
571 ✗ return mpegts_open_filter(ts, pid, MPEGTS_PCR);
572 }
573
574 465 static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
575 {
576 int pid;
577
578 465 pid = filter->pid;
579
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 465 if (filter->type == MPEGTS_SECTION)
580 311 av_freep(&filter->u.section_filter.section_buf);
581
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 154 else if (filter->type == MPEGTS_PES) {
582 154 PESContext *pes = filter->u.pes_filter.opaque;
583 154 av_buffer_unref(&pes->buffer);
584 /* referenced private data will be freed later in
585 * avformat_close_input (pes->st->priv_data == pes) */
586
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 154 if (!pes->st || pes->merged_st) {
587 22 av_freep(&filter->u.pes_filter.opaque);
588 }
589 }
590
591 465 av_free(filter);
592 465 ts->pids[pid] = NULL;
593 465 }
594
595 77661 static int analyze(const uint8_t *buf, int size, int packet_size,
596 int probe)
597 {
598 int stat[TS_MAX_PACKET_SIZE];
599 77661 int stat_all = 0;
600 int i;
601 77661 int best_score = 0;
602
603 77661 memset(stat, 0, packet_size * sizeof(*stat));
604
605
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 1198064526 for (i = 0; i < size - 3; i++) {
606
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 1197986865 if (buf[i] == SYNC_BYTE) {
607 2125681 int pid = AV_RB16(buf+1) & 0x1FFF;
608 2125681 int asc = buf[i + 3] & 0x30;
609
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 2125681 if (!probe || pid == 0x1FFF || asc) {
610 1758569 int x = i % packet_size;
611 1758569 stat[x]++;
612 1758569 stat_all++;
613
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 1758569 if (stat[x] > best_score) {
614 130416 best_score = stat[x];
615 }
616 }
617 }
618 }
619
620 77661 return best_score - FFMAX(stat_all - 10*best_score, 0)/10;
621 }
622
623 /* autodetect fec presence */
624 142 static int get_packet_size(AVFormatContext* s)
625 {
626 int score, fec_score, dvhs_score;
627 int margin;
628 int ret;
629
630 /*init buffer to store stream for probing */
631 142 uint8_t buf[PROBE_PACKET_MAX_BUF] = {0};
632 142 int buf_size = 0;
633 142 int max_iterations = 16;
634
635
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 142 while (buf_size < PROBE_PACKET_MAX_BUF && max_iterations--) {
636 142 ret = avio_read_partial(s->pb, buf + buf_size, PROBE_PACKET_MAX_BUF - buf_size);
637
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 142 if (ret < 0)
638 ✗ return AVERROR_INVALIDDATA;
639 142 buf_size += ret;
640
641 142 score = analyze(buf, buf_size, TS_PACKET_SIZE, 0);
642 142 dvhs_score = analyze(buf, buf_size, TS_DVHS_PACKET_SIZE, 0);
643 142 fec_score = analyze(buf, buf_size, TS_FEC_PACKET_SIZE, 0);
644 142 av_log(s, AV_LOG_TRACE, "Probe: %d, score: %d, dvhs_score: %d, fec_score: %d \n",
645 buf_size, score, dvhs_score, fec_score);
646
647 142 margin = mid_pred(score, fec_score, dvhs_score);
648
649
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 142 if (buf_size < PROBE_PACKET_MAX_BUF)
650 1 margin += PROBE_PACKET_MARGIN; /*if buffer not filled */
651
652
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 142 if (score > margin)
653 132 return TS_PACKET_SIZE;
654
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 10 else if (dvhs_score > margin)
655 10 return TS_DVHS_PACKET_SIZE;
656 ✗ else if (fec_score > margin)
657 ✗ return TS_FEC_PACKET_SIZE;
658 }
659 ✗ return AVERROR_INVALIDDATA;
660 }
661
662 typedef struct SectionHeader {
663 uint8_t tid;
664 uint16_t id;
665 uint8_t version;
666 uint8_t current_next;
667 uint8_t sec_num;
668 uint8_t last_sec_num;
669 } SectionHeader;
670
671 7061 static int skip_identical(const SectionHeader *h, MpegTSSectionFilter *tssf)
672 {
673
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 7061 if (h->version == tssf->last_ver && tssf->last_crc == tssf->crc)
674 6280 return 1;
675
676 781 tssf->last_ver = h->version;
677 781 tssf->last_crc = tssf->crc;
678
679 781 return 0;
680 }
681
682 39262 static inline int get8(const uint8_t **pp, const uint8_t *p_end)
683 {
684 const uint8_t *p;
685 int c;
686
687 39262 p = *pp;
688
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 39262 if (p >= p_end)
689 1776 return AVERROR_INVALIDDATA;
690 37486 c = *p++;
691 37486 *pp = p;
692 37486 return c;
693 }
694
695 12081 static inline int get16(const uint8_t **pp, const uint8_t *p_end)
696 {
697 const uint8_t *p;
698 int c;
699
700 12081 p = *pp;
701
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 12081 if (1 >= p_end - p)
702 430 return AVERROR_INVALIDDATA;
703 11651 c = AV_RB16(p);
704 11651 p += 2;
705 11651 *pp = p;
706 11651 return c;
707 }
708
709 /* read and allocate a DVB string preceded by its length */
710 314 static char *getstr8(const uint8_t **pp, const uint8_t *p_end)
711 {
712 int len;
713 const uint8_t *p;
714 char *str;
715
716 314 p = *pp;
717 314 len = get8(&p, p_end);
718
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 314 if (len < 0)
719 ✗ return NULL;
720
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 314 if (len > p_end - p)
721 ✗ return NULL;
722 #if CONFIG_ICONV
723
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 314 if (len) {
724 314 const char *encodings[] = {
725 "ISO6937", "ISO-8859-5", "ISO-8859-6", "ISO-8859-7",
726 "ISO-8859-8", "ISO-8859-9", "ISO-8859-10", "ISO-8859-11",
727 "", "ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "", "", "", "",
728 "", "UCS-2BE", "KSC_5601", "GB2312", "UCS-2BE", "UTF-8", "", "",
729 "", "", "", "", "", "", "", ""
730 };
731 iconv_t cd;
732 char *in, *out;
733 314 size_t inlen = len, outlen = inlen * 6 + 1;
734
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 314 if (len >= 3 && p[0] == 0x10 && !p[1] && p[2] && p[2] <= 0xf && p[2] != 0xc) {
735 char iso8859[12];
736 ✗ snprintf(iso8859, sizeof(iso8859), "ISO-8859-%d", p[2]);
737 ✗ inlen -= 3;
738 ✗ in = (char *)p + 3;
739 ✗ cd = iconv_open("UTF-8", iso8859);
740
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 314 } else if (p[0] < 0x20) {
741 8 inlen -= 1;
742 8 in = (char *)p + 1;
743 8 cd = iconv_open("UTF-8", encodings[*p]);
744 } else {
745 306 in = (char *)p;
746 306 cd = iconv_open("UTF-8", encodings[0]);
747 }
748
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 314 if (cd == (iconv_t)-1)
749 ✗ goto no_iconv;
750 314 str = out = av_malloc(outlen);
751
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 314 if (!str) {
752 ✗ iconv_close(cd);
753 314 return NULL;
754 }
755
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 314 if (iconv(cd, &in, &inlen, &out, &outlen) == -1) {
756 ✗ iconv_close(cd);
757 ✗ av_freep(&str);
758 ✗ goto no_iconv;
759 }
760 314 iconv_close(cd);
761 314 *out = 0;
762 314 *pp = p + len;
763 314 return str;
764 }
765 ✗ no_iconv:
766 #endif
767 ✗ str = av_malloc(len + 1);
768 ✗ if (!str)
769 ✗ return NULL;
770 ✗ memcpy(str, p, len);
771 ✗ str[len] = '\0';
772 ✗ p += len;
773 ✗ *pp = p;
774 ✗ return str;
775 }
776
777 7948 static int parse_section_header(SectionHeader *h,
778 const uint8_t **pp, const uint8_t *p_end)
779 {
780 int val;
781
782 7948 val = get8(pp, p_end);
783
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 7948 if (val < 0)
784 ✗ return val;
785 7948 h->tid = val;
786 7948 *pp += 2;
787 7948 val = get16(pp, p_end);
788
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 7948 if (val < 0)
789 ✗ return val;
790 7948 h->id = val;
791 7948 val = get8(pp, p_end);
792
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 7948 if (val < 0)
793 ✗ return val;
794 7948 h->version = (val >> 1) & 0x1f;
795 7948 h->current_next = val & 0x01;
796 7948 val = get8(pp, p_end);
797
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 7948 if (val < 0)
798 ✗ return val;
799 7948 h->sec_num = val;
800 7948 val = get8(pp, p_end);
801
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 7948 if (val < 0)
802 ✗ return val;
803 7948 h->last_sec_num = val;
804 7948 return 0;
805 }
806
807 typedef struct StreamType {
808 uint32_t stream_type;
809 enum AVMediaType codec_type;
810 enum AVCodecID codec_id;
811 } StreamType;
812
813 static const StreamType ISO_types[] = {
814 { STREAM_TYPE_VIDEO_MPEG1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
815 { STREAM_TYPE_VIDEO_MPEG2, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
816 { STREAM_TYPE_AUDIO_MPEG1, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
817 { STREAM_TYPE_AUDIO_MPEG2, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
818 { STREAM_TYPE_AUDIO_AAC, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
819 { STREAM_TYPE_VIDEO_MPEG4, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG4 },
820 /* Makito encoder sets stream type 0x11 for AAC,
821 * so auto-detect LOAS/LATM instead of hardcoding it. */
822 #if !CONFIG_LOAS_DEMUXER
823 { STREAM_TYPE_AUDIO_AAC_LATM, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC_LATM }, /* LATM syntax */
824 #endif
825 { STREAM_TYPE_VIDEO_H264, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
826 { STREAM_TYPE_AUDIO_MPEG4, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
827 { STREAM_TYPE_VIDEO_MVC, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
828 { STREAM_TYPE_VIDEO_JPEG2000, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_JPEG2000 },
829 { STREAM_TYPE_VIDEO_HEVC, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
830 { STREAM_TYPE_VIDEO_JPEGXS, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_JPEGXS },
831 { STREAM_TYPE_VIDEO_LCEVC, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_LCEVC },
832 { STREAM_TYPE_VIDEO_VVC, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VVC },
833 { STREAM_TYPE_VIDEO_CAVS, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_CAVS },
834 { STREAM_TYPE_VIDEO_DIRAC, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
835 { STREAM_TYPE_VIDEO_AVS2, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_AVS2 },
836 { STREAM_TYPE_VIDEO_AVS3, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_AVS3 },
837 { STREAM_TYPE_VIDEO_VC1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
838 { 0 },
839 };
840
841 static const StreamType HDMV_types[] = {
842 { STREAM_TYPE_BLURAY_AUDIO_PCM_BLURAY, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_BLURAY },
843 { STREAM_TYPE_BLURAY_AUDIO_AC3, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
844 { STREAM_TYPE_BLURAY_AUDIO_DTS, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
845 { STREAM_TYPE_BLURAY_AUDIO_TRUEHD, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_TRUEHD },
846 { STREAM_TYPE_BLURAY_AUDIO_EAC3, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
847 { STREAM_TYPE_BLURAY_AUDIO_DTS_HD, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
848 { STREAM_TYPE_BLURAY_AUDIO_DTS_HD_MASTER, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
849 { STREAM_TYPE_BLURAY_AUDIO_EAC3_SECONDARY, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
850 { STREAM_TYPE_BLURAY_AUDIO_DTS_EXPRESS_SECONDARY, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
851 { STREAM_TYPE_BLURAY_SUBTITLE_PGS, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_PGS_SUBTITLE },
852 { STREAM_TYPE_BLURAY_SUBTITLE_TEXT, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_TEXT_SUBTITLE },
853 { 0 },
854 };
855
856 /* SCTE types */
857 static const StreamType SCTE_types[] = {
858 { STREAM_TYPE_SCTE_DATA_SCTE_35, AVMEDIA_TYPE_DATA, AV_CODEC_ID_SCTE_35 },
859 { 0 },
860 };
861
862 /* ATSC ? */
863 static const StreamType MISC_types[] = {
864 { STREAM_TYPE_ATSC_AUDIO_AC3, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
865 { STREAM_TYPE_ATSC_AUDIO_EAC3, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
866 { 0x8a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
867 { 0 },
868 };
869
870 /* HLS Sample Encryption Types */
871 static const StreamType HLS_SAMPLE_ENC_types[] = {
872 { STREAM_TYPE_HLS_SE_VIDEO_H264, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264},
873 { STREAM_TYPE_HLS_SE_AUDIO_AAC, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
874 { STREAM_TYPE_HLS_SE_AUDIO_AC3, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
875 { STREAM_TYPE_HLS_SE_AUDIO_EAC3, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3},
876 { 0 },
877 };
878
879 static const StreamType REGD_types[] = {
880 { MKTAG('d', 'r', 'a', 'c'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
881 { MKTAG('A', 'C', '-', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
882 { MKTAG('A', 'C', '-', '4'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC4 },
883 { MKTAG('B', 'S', 'S', 'D'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_S302M },
884 { MKTAG('D', 'T', 'S', '1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
885 { MKTAG('D', 'T', 'S', '2'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
886 { MKTAG('D', 'T', 'S', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
887 { MKTAG('E', 'A', 'C', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
888 { MKTAG('H', 'E', 'V', 'C'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
889 { MKTAG('V', 'V', 'C', ' '), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VVC },
890 { MKTAG('K', 'L', 'V', 'A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV },
891 { MKTAG('V', 'A', 'N', 'C'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_2038 },
892 { MKTAG('I', 'D', '3', ' '), AVMEDIA_TYPE_DATA, AV_CODEC_ID_TIMED_ID3 },
893 { MKTAG('V', 'C', '-', '1'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
894 { MKTAG('O', 'p', 'u', 's'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_OPUS },
895 { 0 },
896 };
897
898 static const StreamType METADATA_types[] = {
899 { MKTAG('K','L','V','A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV },
900 { MKTAG('I','D','3',' '), AVMEDIA_TYPE_DATA, AV_CODEC_ID_TIMED_ID3 },
901 { 0 },
902 };
903
904 /* descriptor present */
905 static const StreamType DESC_types[] = {
906 { AC3_DESCRIPTOR, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
907 { ENHANCED_AC3_DESCRIPTOR, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
908 { DTS_DESCRIPTOR, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
909 { TELETEXT_DESCRIPTOR, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT },
910 { SUBTITLING_DESCRIPTOR, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_SUBTITLE },
911 { 0 },
912 };
913
914 224 static void mpegts_find_stream_type(AVStream *st,
915 uint32_t stream_type,
916 const StreamType *types)
917 {
918 224 FFStream *const sti = ffstream(st);
919
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 1546 for (; types->stream_type; types++)
920
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 1469 if (stream_type == types->stream_type) {
921
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 147 if (st->codecpar->codec_type != types->codec_type ||
922
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 14 st->codecpar->codec_id != types->codec_id) {
923 146 st->codecpar->codec_type = types->codec_type;
924 146 st->codecpar->codec_id = types->codec_id;
925 146 sti->need_context_update = 1;
926 }
927 147 sti->request_probe = 0;
928 147 return;
929 }
930 }
931
932 142 static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
933 uint32_t stream_type, uint32_t prog_reg_desc)
934 {
935 142 FFStream *const sti = ffstream(st);
936 142 int old_codec_type = st->codecpar->codec_type;
937 142 int old_codec_id = st->codecpar->codec_id;
938 142 int old_codec_tag = st->codecpar->codec_tag;
939
940 142 avpriv_set_pts_info(st, 33, 1, 90000);
941 142 st->priv_data = pes;
942 142 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
943 142 st->codecpar->codec_id = AV_CODEC_ID_NONE;
944 142 sti->need_parsing = AVSTREAM_PARSE_FULL;
945 142 pes->st = st;
946 142 pes->stream_type = stream_type;
947
948 142 av_log(pes->stream, AV_LOG_DEBUG,
949 "stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
950 st->index, pes->stream_type, pes->pid, (char *)&prog_reg_desc);
951
952 142 st->codecpar->codec_tag = pes->stream_type;
953
954 142 mpegts_find_stream_type(st, pes->stream_type, ISO_types);
955
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 142 if (pes->stream_type == STREAM_TYPE_AUDIO_MPEG2 || pes->stream_type == STREAM_TYPE_AUDIO_AAC)
956 11 sti->request_probe = 50;
957
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 142 if (pes->stream_type == STREAM_TYPE_PRIVATE_DATA)
958 11 sti->request_probe = AVPROBE_SCORE_STREAM_RETRY;
959
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 142 if ((prog_reg_desc == AV_RL32("HDMV") ||
960
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 136 prog_reg_desc == AV_RL32("HDPR")) &&
961
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 6 st->codecpar->codec_id == AV_CODEC_ID_NONE) {
962 6 mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
963
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 6 if (pes->stream_type == STREAM_TYPE_BLURAY_AUDIO_TRUEHD) {
964 // HDMV TrueHD streams also contain an AC3 coded version of the
965 // audio track - add a second stream for this
966 AVStream *sub_st;
967 // priv_data cannot be shared between streams
968 ✗ PESContext *sub_pes = av_memdup(pes, sizeof(*sub_pes));
969 ✗ if (!sub_pes)
970 ✗ return AVERROR(ENOMEM);
971
972 ✗ sub_st = avformat_new_stream(pes->stream, NULL);
973 ✗ if (!sub_st) {
974 ✗ av_free(sub_pes);
975 ✗ return AVERROR(ENOMEM);
976 }
977
978 ✗ sub_st->id = pes->pid;
979 ✗ avpriv_set_pts_info(sub_st, 33, 1, 90000);
980 ✗ sub_st->priv_data = sub_pes;
981 ✗ sub_st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
982 ✗ sub_st->codecpar->codec_id = AV_CODEC_ID_AC3;
983 ✗ ffstream(sub_st)->need_parsing = AVSTREAM_PARSE_FULL;
984 ✗ sub_pes->sub_st = pes->sub_st = sub_st;
985 }
986 }
987
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 142 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
988 35 mpegts_find_stream_type(st, pes->stream_type, MISC_types);
989
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 142 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
990 14 mpegts_find_stream_type(st, pes->stream_type, HLS_SAMPLE_ENC_types);
991
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 142 if (st->codecpar->codec_id == AV_CODEC_ID_NONE) {
992 14 st->codecpar->codec_id = old_codec_id;
993 14 st->codecpar->codec_type = old_codec_type;
994 }
995
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 142 if ((st->codecpar->codec_id == AV_CODEC_ID_NONE ||
996
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 134 (sti->request_probe > 0 && sti->request_probe < AVPROBE_SCORE_STREAM_RETRY / 5)) &&
997
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 8 sti->probe_packets > 0 &&
998 stream_type == STREAM_TYPE_PRIVATE_DATA) {
999 5 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
1000 5 st->codecpar->codec_id = AV_CODEC_ID_BIN_DATA;
1001 5 sti->request_probe = AVPROBE_SCORE_STREAM_RETRY / 5;
1002 }
1003
1004 /* queue a context update if properties changed */
1005
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 142 if (old_codec_type != st->codecpar->codec_type ||
1006
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 13 old_codec_id != st->codecpar->codec_id ||
1007
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 9 old_codec_tag != st->codecpar->codec_tag)
1008 142 sti->need_context_update = 1;
1009
1010 142 return 0;
1011 }
1012
1013 64909 static void reset_pes_packet_state(PESContext *pes)
1014 {
1015 64909 pes->pts = AV_NOPTS_VALUE;
1016 64909 pes->dts = AV_NOPTS_VALUE;
1017 64909 pes->data_index = 0;
1018 64909 pes->flags = 0;
1019 64909 av_buffer_unref(&pes->buffer);
1020 64909 }
1021
1022 12 static void new_data_packet(const uint8_t *buffer, int len, AVPacket *pkt)
1023 {
1024 12 av_packet_unref(pkt);
1025 12 pkt->data = (uint8_t *)buffer;
1026 12 pkt->size = len;
1027 12 }
1028
1029 34359 static int new_pes_packet(PESContext *pes, AVPacket *pkt)
1030 {
1031 uint8_t *sd;
1032
1033 34359 av_packet_unref(pkt);
1034
1035 34359 pkt->buf = pes->buffer;
1036 34359 pkt->data = pes->buffer->data;
1037 34359 pkt->size = pes->data_index;
1038
1039
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 34359 if (pes->PES_packet_length &&
1040
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 29726 pes->pes_header_size + pes->data_index != pes->PES_packet_length +
1041 PES_START_SIZE) {
1042 93 av_log(pes->stream, AV_LOG_WARNING, "PES packet size mismatch\n");
1043 93 pes->flags |= AV_PKT_FLAG_CORRUPT;
1044 }
1045
1046 // JPEG-XS PES payload
1047
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 34359 if (pes->stream_id == 0xbd && pes->stream_type == 0x32 &&
1048 ✗ pkt->size >= 8 && memcmp(pkt->data + 4, "jxes", 4) == 0)
1049 {
1050 ✗ uint32_t header_size = AV_RB32(pkt->data);
1051 ✗ if (header_size > pkt->size) {
1052 ✗ av_log(pes->stream, AV_LOG_WARNING,
1053 "Invalid JPEG-XS header size %"PRIu32" > packet size %d\n",
1054 header_size, pkt->size);
1055 ✗ pes->flags |= AV_PKT_FLAG_CORRUPT;
1056 } else {
1057 ✗ pkt->data += header_size;
1058 ✗ pkt->size -= header_size;
1059 }
1060 }
1061
1062 34359 memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1063
1064 // Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID
1065
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 34359 if (pes->sub_st && pes->stream_type == STREAM_TYPE_BLURAY_AUDIO_TRUEHD && pes->extended_stream_id == 0x76)
1066 ✗ pkt->stream_index = pes->sub_st->index;
1067 else
1068 34359 pkt->stream_index = pes->st->index;
1069 34359 pkt->pts = pes->pts;
1070 34359 pkt->dts = pes->dts;
1071 /* store position of first TS packet of this PES packet */
1072 34359 pkt->pos = pes->ts_packet_pos;
1073 34359 pkt->flags = pes->flags;
1074
1075 34359 pes->buffer = NULL;
1076 34359 reset_pes_packet_state(pes);
1077
1078 34359 sd = av_packet_new_side_data(pkt, AV_PKT_DATA_MPEGTS_STREAM_ID, 1);
1079
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 34359 if (!sd)
1080 ✗ return AVERROR(ENOMEM);
1081 34359 *sd = pes->stream_id;
1082
1083 34359 return 0;
1084 }
1085
1086 ✗ static uint64_t get_ts64(GetBitContext *gb, int bits)
1087 {
1088 ✗ if (get_bits_left(gb) < bits)
1089 ✗ return AV_NOPTS_VALUE;
1090 ✗ return get_bits64(gb, bits);
1091 }
1092
1093 ✗ static int read_sl_header(PESContext *pes, SLConfigDescr *sl,
1094 const uint8_t *buf, int buf_size)
1095 {
1096 GetBitContext gb;
1097 ✗ int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
1098 ✗ int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
1099 ✗ int dts_flag = -1, cts_flag = -1;
1100 ✗ int64_t dts = AV_NOPTS_VALUE, cts = AV_NOPTS_VALUE;
1101 uint8_t buf_padded[128 + AV_INPUT_BUFFER_PADDING_SIZE];
1102 ✗ int buf_padded_size = FFMIN(buf_size, sizeof(buf_padded) - AV_INPUT_BUFFER_PADDING_SIZE);
1103
1104 ✗ memcpy(buf_padded, buf, buf_padded_size);
1105
1106 ✗ init_get_bits(&gb, buf_padded, buf_padded_size * 8);
1107
1108 ✗ if (sl->use_au_start)
1109 ✗ au_start_flag = get_bits1(&gb);
1110 ✗ if (sl->use_au_end)
1111 ✗ au_end_flag = get_bits1(&gb);
1112 ✗ if (!sl->use_au_start && !sl->use_au_end)
1113 ✗ au_start_flag = au_end_flag = 1;
1114 ✗ if (sl->ocr_len > 0)
1115 ✗ ocr_flag = get_bits1(&gb);
1116 ✗ if (sl->use_idle)
1117 ✗ idle_flag = get_bits1(&gb);
1118 ✗ if (sl->use_padding)
1119 ✗ padding_flag = get_bits1(&gb);
1120 ✗ if (padding_flag)
1121 ✗ padding_bits = get_bits(&gb, 3);
1122
1123 ✗ if (!idle_flag && (!padding_flag || padding_bits != 0)) {
1124 ✗ if (sl->packet_seq_num_len)
1125 ✗ skip_bits_long(&gb, sl->packet_seq_num_len);
1126 ✗ if (sl->degr_prior_len)
1127 ✗ if (get_bits1(&gb))
1128 ✗ skip_bits(&gb, sl->degr_prior_len);
1129 ✗ if (ocr_flag)
1130 ✗ skip_bits_long(&gb, sl->ocr_len);
1131 ✗ if (au_start_flag) {
1132 ✗ if (sl->use_rand_acc_pt)
1133 ✗ get_bits1(&gb);
1134 ✗ if (sl->au_seq_num_len > 0)
1135 ✗ skip_bits_long(&gb, sl->au_seq_num_len);
1136 ✗ if (sl->use_timestamps) {
1137 ✗ dts_flag = get_bits1(&gb);
1138 ✗ cts_flag = get_bits1(&gb);
1139 }
1140 }
1141 ✗ if (sl->inst_bitrate_len)
1142 ✗ inst_bitrate_flag = get_bits1(&gb);
1143 ✗ if (dts_flag == 1)
1144 ✗ dts = get_ts64(&gb, sl->timestamp_len);
1145 ✗ if (cts_flag == 1)
1146 ✗ cts = get_ts64(&gb, sl->timestamp_len);
1147 ✗ if (sl->au_len > 0)
1148 ✗ skip_bits_long(&gb, sl->au_len);
1149 ✗ if (inst_bitrate_flag)
1150 ✗ skip_bits_long(&gb, sl->inst_bitrate_len);
1151 }
1152
1153 ✗ if (dts != AV_NOPTS_VALUE)
1154 ✗ pes->dts = dts;
1155 ✗ if (cts != AV_NOPTS_VALUE)
1156 ✗ pes->pts = cts;
1157
1158 ✗ if (sl->timestamp_len && sl->timestamp_res)
1159 ✗ avpriv_set_pts_info(pes->st, sl->timestamp_len, 1, sl->timestamp_res);
1160
1161 ✗ return (get_bits_count(&gb) + 7) >> 3;
1162 }
1163
1164 34461 static AVBufferRef *buffer_pool_get(MpegTSContext *ts, int size)
1165 {
1166 34461 int index = av_log2(size + AV_INPUT_BUFFER_PADDING_SIZE);
1167
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 34461 if (!ts->pools[index]) {
1168
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 184 int pool_size = FFMIN(ts->max_packet_size + AV_INPUT_BUFFER_PADDING_SIZE, 2 << index);
1169 184 ts->pools[index] = av_buffer_pool_init(pool_size, NULL);
1170
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 184 if (!ts->pools[index])
1171 ✗ return NULL;
1172 }
1173 34461 return av_buffer_pool_get(ts->pools[index]);
1174 }
1175
1176 /* return non zero if a packet could be constructed */
1177 428989 static int mpegts_push_data(MpegTSFilter *filter,
1178 const uint8_t *buf, int buf_size, int is_start,
1179 int64_t pos)
1180 {
1181 428989 PESContext *pes = filter->u.pes_filter.opaque;
1182 428989 MpegTSContext *ts = pes->ts;
1183 const uint8_t *p;
1184 int ret, len;
1185
1186
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 428989 if (!ts->pkt)
1187 ✗ return 0;
1188
1189
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 428989 if (is_start) {
1190
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 35061 if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
1191 4511 ret = new_pes_packet(pes, ts->pkt);
1192
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 4511 if (ret < 0)
1193 ✗ return ret;
1194 4511 ts->stop_parse = 1;
1195 } else {
1196 30550 reset_pes_packet_state(pes);
1197 }
1198 35061 pes->state = MPEGTS_HEADER;
1199 35061 pes->ts_packet_pos = pos;
1200 }
1201 428989 p = buf;
1202
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 1390948 while (buf_size > 0) {
1203
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 532970 switch (pes->state) {
1204 35061 case MPEGTS_HEADER:
1205 35061 len = PES_START_SIZE - pes->data_index;
1206
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 35061 if (len > buf_size)
1207 2 len = buf_size;
1208 35061 memcpy(pes->header + pes->data_index, p, len);
1209 35061 pes->data_index += len;
1210 35061 p += len;
1211 35061 buf_size -= len;
1212
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 35061 if (pes->data_index == PES_START_SIZE) {
1213 /* we got all the PES or section header. We can now
1214 * decide */
1215
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 35059 if (pes->header[0] == 0x00 && pes->header[1] == 0x00 &&
1216
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 35052 pes->header[2] == 0x01) {
1217 /* it must be an MPEG-2 PES stream */
1218 35052 pes->stream_id = pes->header[3];
1219 35052 av_log(pes->stream, AV_LOG_TRACE, "pid=%x stream_id=%#x\n", pes->pid, pes->stream_id);
1220
1221
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 35052 if ((pes->st && pes->st->discard == AVDISCARD_ALL &&
1222
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 591 (!pes->sub_st ||
1223 ✗ pes->sub_st->discard == AVDISCARD_ALL)) ||
1224
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 34461 pes->stream_id == STREAM_ID_PADDING_STREAM)
1225 591 goto skip;
1226
1227 /* stream not present in PMT */
1228
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 34461 if (!pes->st) {
1229 ✗ if (ts->skip_changes)
1230 ✗ goto skip;
1231 ✗ if (ts->merge_pmt_versions)
1232 ✗ goto skip; /* wait for PMT to merge new stream */
1233
1234 ✗ pes->st = avformat_new_stream(ts->stream, NULL);
1235 ✗ if (!pes->st)
1236 ✗ return AVERROR(ENOMEM);
1237 ✗ pes->st->id = pes->pid;
1238 ✗ mpegts_set_stream_info(pes->st, pes, 0, 0);
1239 }
1240
1241 34461 pes->PES_packet_length = AV_RB16(pes->header + 4);
1242 /* NOTE: zero length means the PES size is unbounded */
1243
1244
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 34461 if (pes->stream_id != STREAM_ID_PROGRAM_STREAM_MAP &&
1245
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 34461 pes->stream_id != STREAM_ID_PRIVATE_STREAM_2 &&
1246
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 34461 pes->stream_id != STREAM_ID_ECM_STREAM &&
1247
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 34461 pes->stream_id != STREAM_ID_EMM_STREAM &&
1248
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 34461 pes->stream_id != STREAM_ID_PROGRAM_STREAM_DIRECTORY &&
1249
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 34461 pes->stream_id != STREAM_ID_DSMCC_STREAM &&
1250
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 68922 pes->stream_id != STREAM_ID_TYPE_E_STREAM) {
1251 34461 FFStream *const pes_sti = ffstream(pes->st);
1252 34461 pes->state = MPEGTS_PESHEADER;
1253
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 34461 if (pes->st->codecpar->codec_id == AV_CODEC_ID_NONE && !pes_sti->request_probe) {
1254 2 av_log(pes->stream, AV_LOG_TRACE,
1255 "pid=%x stream_type=%x probing\n",
1256 pes->pid,
1257 pes->stream_type);
1258 2 pes_sti->request_probe = 1;
1259 }
1260 } else {
1261 ✗ pes->pes_header_size = 6;
1262 ✗ pes->state = MPEGTS_PAYLOAD;
1263 ✗ pes->data_index = 0;
1264 }
1265 } else {
1266 /* otherwise, it should be a table */
1267 /* skip packet */
1268 7 skip:
1269 598 pes->state = MPEGTS_SKIP;
1270 598 continue;
1271 }
1272 }
1273 34463 break;
1274 /**********************************************/
1275 /* PES packing parsing */
1276 34461 case MPEGTS_PESHEADER:
1277 34461 len = PES_HEADER_SIZE - pes->data_index;
1278
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 34461 if (len < 0)
1279 ✗ return AVERROR_INVALIDDATA;
1280
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 34461 if (len > buf_size)
1281 ✗ len = buf_size;
1282 34461 memcpy(pes->header + pes->data_index, p, len);
1283 34461 pes->data_index += len;
1284 34461 p += len;
1285 34461 buf_size -= len;
1286
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 34461 if (pes->data_index == PES_HEADER_SIZE) {
1287 34461 pes->pes_header_size = pes->header[8] + 9;
1288 34461 pes->state = MPEGTS_PESHEADER_FILL;
1289 }
1290 34461 break;
1291 34461 case MPEGTS_PESHEADER_FILL:
1292 34461 len = pes->pes_header_size - pes->data_index;
1293
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 34461 if (len < 0)
1294 ✗ return AVERROR_INVALIDDATA;
1295
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 34461 if (len > buf_size)
1296 ✗ len = buf_size;
1297 34461 memcpy(pes->header + pes->data_index, p, len);
1298 34461 pes->data_index += len;
1299 34461 p += len;
1300 34461 buf_size -= len;
1301
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 34461 if (pes->data_index == pes->pes_header_size) {
1302 const uint8_t *r;
1303 unsigned int flags, pes_ext, skip;
1304
1305 34461 flags = pes->header[7];
1306 34461 r = pes->header + 9;
1307 34461 pes->pts = AV_NOPTS_VALUE;
1308 34461 pes->dts = AV_NOPTS_VALUE;
1309
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 34461 if ((flags & 0xc0) == 0x80) {
1310 12876 pes->dts = pes->pts = ff_parse_pes_pts(r);
1311 12876 r += 5;
1312
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 21585 } else if ((flags & 0xc0) == 0xc0) {
1313 3096 pes->pts = ff_parse_pes_pts(r);
1314 3096 r += 5;
1315 3096 pes->dts = ff_parse_pes_pts(r);
1316 3096 r += 5;
1317 }
1318 34461 pes->extended_stream_id = -1;
1319
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 34461 if (flags & 0x01) { /* PES extension */
1320 ✗ pes_ext = *r++;
1321 /* Skip PES private data, program packet sequence counter and P-STD buffer */
1322 ✗ skip = (pes_ext >> 4) & 0xb;
1323 ✗ skip += skip & 0x9;
1324 ✗ r += skip;
1325 ✗ if ((pes_ext & 0x41) == 0x01 &&
1326 ✗ (r + 2) <= (pes->header + pes->pes_header_size)) {
1327 /* PES extension 2 */
1328 ✗ if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
1329 ✗ pes->extended_stream_id = r[1];
1330 }
1331 }
1332
1333 /* we got the full header. We parse it and get the payload */
1334 34461 pes->state = MPEGTS_PAYLOAD;
1335 34461 pes->data_index = 0;
1336
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 34461 if (pes->stream_type == STREAM_TYPE_ISO_IEC_14496_PES && buf_size > 0) {
1337 ✗ int sl_header_bytes = read_sl_header(pes, &pes->sl, p,
1338 buf_size);
1339 ✗ pes->pes_header_size += sl_header_bytes;
1340 ✗ p += sl_header_bytes;
1341 ✗ buf_size -= sl_header_bytes;
1342 }
1343
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 34461 if (pes->stream_type == STREAM_TYPE_METADATA &&
1344
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 6 pes->stream_id == STREAM_ID_METADATA_STREAM &&
1345 ✗ pes->st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV &&
1346 buf_size >= 5) {
1347 /* skip metadata access unit header - see MISB ST 1402 */
1348 ✗ pes->pes_header_size += 5;
1349 ✗ p += 5;
1350 ✗ buf_size -= 5;
1351 }
1352
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✗ Branch 1 not taken.
 34461 if ( pes->ts->fix_teletext_pts
1353
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 34461 && ( pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT
1354
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 34461 || pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
1355 ) {
1356 254 AVProgram *p = NULL;
1357 254 int pcr_found = 0;
1358
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 508 while ((p = av_find_program_from_stream(pes->stream, p, pes->st->index))) {
1359
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 254 if (p->pcr_pid != -1 && p->discard != AVDISCARD_ALL) {
1360 254 MpegTSFilter *f = pes->ts->pids[p->pcr_pid];
1361
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✗ Branch 1 not taken.
 254 if (f) {
1362 254 AVStream *st = NULL;
1363
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✗ Branch 1 not taken.
 254 if (f->type == MPEGTS_PES) {
1364 254 PESContext *pcrpes = f->u.pes_filter.opaque;
1365
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✗ Branch 1 not taken.
 254 if (pcrpes)
1366 254 st = pcrpes->st;
1367 ✗ } else if (f->type == MPEGTS_PCR) {
1368 int i;
1369 ✗ for (i = 0; i < p->nb_stream_indexes; i++) {
1370 ✗ AVStream *pst = pes->stream->streams[p->stream_index[i]];
1371 ✗ if (pst->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1372 ✗ st = pst;
1373 }
1374 }
1375
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 254 if (f->last_pcr != -1 && !f->discard) {
1376 // teletext packets do not always have correct timestamps,
1377 // the standard says they should be handled after 40.6 ms at most,
1378 // and the pcr error to this packet should be no more than 100 ms.
1379 // TODO: we should interpolate the PCR, not just use the last one
1380 ✗ int64_t pcr = f->last_pcr / SYSTEM_CLOCK_FREQUENCY_DIVISOR;
1381 ✗ pcr_found = 1;
1382 ✗ if (st) {
1383 ✗ const FFStream *const sti = ffstream(st);
1384 ✗ FFStream *const pes_sti = ffstream(pes->st);
1385
1386 ✗ pes_sti->pts_wrap_reference = sti->pts_wrap_reference;
1387 ✗ pes_sti->pts_wrap_behavior = sti->pts_wrap_behavior;
1388 }
1389 ✗ if (pes->dts == AV_NOPTS_VALUE || pes->dts < pcr) {
1390 ✗ pes->pts = pes->dts = pcr;
1391 ✗ } else if (pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT &&
1392 ✗ pes->dts > pcr + 3654 + 9000) {
1393 ✗ pes->pts = pes->dts = pcr + 3654 + 9000;
1394 ✗ } else if (pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
1395 ✗ pes->dts > pcr + 10*90000) { //10sec
1396 ✗ pes->pts = pes->dts = pcr + 3654 + 9000;
1397 }
1398 ✗ break;
1399 }
1400 }
1401 }
1402 }
1403
1404
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 254 if (pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT &&
1405 !pcr_found) {
1406 ✗ av_log(pes->stream, AV_LOG_VERBOSE,
1407 "Forcing DTS/PTS to be unset for a "
1408 "non-trustworthy PES packet for PID %d as "
1409 "PCR hasn't been received yet.\n",
1410 pes->pid);
1411 ✗ pes->dts = pes->pts = AV_NOPTS_VALUE;
1412 }
1413 }
1414 }
1415 34461 break;
1416 410354 case MPEGTS_PAYLOAD:
1417 do {
1418 410354 int max_packet_size = ts->max_packet_size;
1419
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 410354 if (pes->PES_packet_length && pes->PES_packet_length + PES_START_SIZE > pes->pes_header_size)
1420 233124 max_packet_size = pes->PES_packet_length + PES_START_SIZE - pes->pes_header_size;
1421
1422
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 410354 if (pes->data_index > 0 &&
1423
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 375893 pes->data_index + buf_size > max_packet_size) {
1424 ✗ ret = new_pes_packet(pes, ts->pkt);
1425 ✗ if (ret < 0)
1426 ✗ return ret;
1427 ✗ pes->PES_packet_length = 0;
1428 ✗ max_packet_size = ts->max_packet_size;
1429 ✗ ts->stop_parse = 1;
1430
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 410354 } else if (pes->data_index == 0 &&
1431 buf_size > max_packet_size) {
1432 // pes packet size is < ts size packet and pes data is padded with STUFFING_BYTE
1433 // not sure if this is legal in ts but see issue #2392
1434 ✗ buf_size = max_packet_size;
1435 }
1436
1437
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 410354 if (!pes->buffer) {
1438 34461 pes->buffer = buffer_pool_get(ts, max_packet_size);
1439
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 34461 if (!pes->buffer)
1440 ✗ return AVERROR(ENOMEM);
1441 }
1442
1443 410354 memcpy(pes->buffer->data + pes->data_index, p, buf_size);
1444 410354 pes->data_index += buf_size;
1445 /* emit complete packets with known packet size
1446 * decreases demuxer delay for infrequent packets like subtitles from
1447 * a couple of seconds to milliseconds for properly muxed files. */
1448
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 410354 if (!ts->stop_parse && pes->PES_packet_length &&
1449
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 233124 pes->pes_header_size + pes->data_index == pes->PES_packet_length + PES_START_SIZE) {
1450 29633 ts->stop_parse = 1;
1451 29633 ret = new_pes_packet(pes, ts->pkt);
1452 29633 pes->state = MPEGTS_SKIP;
1453
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 29633 if (ret < 0)
1454 ✗ return ret;
1455 }
1456 } while (0);
1457 410354 buf_size = 0;
1458 410354 break;
1459 18633 case MPEGTS_SKIP:
1460 18633 buf_size = 0;
1461 18633 break;
1462 }
1463 }
1464
1465 428989 return 0;
1466 }
1467
1468 154 static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
1469 {
1470 MpegTSFilter *tss;
1471 PESContext *pes;
1472
1473 /* if no pid found, then add a pid context */
1474 154 pes = av_mallocz(sizeof(PESContext));
1475
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 154 if (!pes)
1476 ✗ return 0;
1477 154 pes->ts = ts;
1478 154 pes->stream = ts->stream;
1479 154 pes->pid = pid;
1480 154 pes->pcr_pid = pcr_pid;
1481 154 pes->state = MPEGTS_SKIP;
1482 154 pes->pts = AV_NOPTS_VALUE;
1483 154 pes->dts = AV_NOPTS_VALUE;
1484 154 tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes);
1485
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 154 if (!tss) {
1486 ✗ av_free(pes);
1487 ✗ return 0;
1488 }
1489 154 return pes;
1490 }
1491
1492 #define MAX_LEVEL 4
1493 typedef struct MP4DescrParseContext {
1494 AVFormatContext *s;
1495 FFIOContext pb;
1496 Mp4Descr *descr;
1497 Mp4Descr *active_descr;
1498 int descr_count;
1499 int max_descr_count;
1500 int level;
1501 int predefined_SLConfigDescriptor_seen;
1502 } MP4DescrParseContext;
1503
1504 ✗ static int init_MP4DescrParseContext(MP4DescrParseContext *d, AVFormatContext *s,
1505 const uint8_t *buf, unsigned size,
1506 Mp4Descr *descr, int max_descr_count)
1507 {
1508 ✗ if (size > (1 << 30))
1509 ✗ return AVERROR_INVALIDDATA;
1510
1511 ✗ ffio_init_read_context(&d->pb, buf, size);
1512
1513 ✗ d->s = s;
1514 ✗ d->level = 0;
1515 ✗ d->descr_count = 0;
1516 ✗ d->descr = descr;
1517 ✗ d->active_descr = NULL;
1518 ✗ d->max_descr_count = max_descr_count;
1519
1520 ✗ return 0;
1521 }
1522
1523 ✗ static void update_offsets(AVIOContext *pb, int64_t *off, int *len)
1524 {
1525 ✗ int64_t new_off = avio_tell(pb);
1526 ✗ (*len) -= new_off - *off;
1527 ✗ *off = new_off;
1528 ✗ }
1529
1530 static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
1531 int target_tag);
1532
1533 ✗ static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len)
1534 {
1535 ✗ while (len > 0) {
1536 ✗ int ret = parse_mp4_descr(d, off, len, 0);
1537 ✗ if (ret < 0)
1538 ✗ return ret;
1539 ✗ update_offsets(&d->pb.pub, &off, &len);
1540 }
1541 ✗ return 0;
1542 }
1543
1544 ✗ static int parse_MP4IODescrTag(MP4DescrParseContext *d, int64_t off, int len)
1545 {
1546 ✗ AVIOContext *const pb = &d->pb.pub;
1547 ✗ avio_rb16(pb); // ID
1548 ✗ avio_r8(pb);
1549 ✗ avio_r8(pb);
1550 ✗ avio_r8(pb);
1551 ✗ avio_r8(pb);
1552 ✗ avio_r8(pb);
1553 ✗ update_offsets(pb, &off, &len);
1554 ✗ return parse_mp4_descr_arr(d, off, len);
1555 }
1556
1557 ✗ static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len)
1558 {
1559 int id_flags;
1560 ✗ if (len < 2)
1561 ✗ return 0;
1562 ✗ id_flags = avio_rb16(&d->pb.pub);
1563 ✗ if (!(id_flags & 0x0020)) { // URL_Flag
1564 ✗ update_offsets(&d->pb.pub, &off, &len);
1565 ✗ return parse_mp4_descr_arr(d, off, len); // ES_Descriptor[]
1566 } else {
1567 ✗ return 0;
1568 }
1569 }
1570
1571 ✗ static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len)
1572 {
1573 ✗ AVIOContext *const pb = &d->pb.pub;
1574 ✗ int es_id = 0;
1575 ✗ int ret = 0;
1576
1577 ✗ if (d->descr_count >= d->max_descr_count)
1578 ✗ return AVERROR_INVALIDDATA;
1579 ✗ ff_mp4_parse_es_descr(pb, &es_id);
1580 ✗ d->active_descr = d->descr + (d->descr_count++);
1581
1582 ✗ d->active_descr->es_id = es_id;
1583 ✗ update_offsets(pb, &off, &len);
1584 ✗ if ((ret = parse_mp4_descr(d, off, len, MP4DecConfigDescrTag)) < 0)
1585 ✗ return ret;
1586 ✗ update_offsets(pb, &off, &len);
1587 ✗ if (len > 0)
1588 ✗ ret = parse_mp4_descr(d, off, len, MP4SLDescrTag);
1589 ✗ d->active_descr = NULL;
1590 ✗ return ret;
1591 }
1592
1593 ✗ static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off,
1594 int len)
1595 {
1596 ✗ Mp4Descr *descr = d->active_descr;
1597 ✗ if (!descr)
1598 ✗ return AVERROR_INVALIDDATA;
1599 ✗ d->active_descr->dec_config_descr = av_malloc(len);
1600 ✗ if (!descr->dec_config_descr)
1601 ✗ return AVERROR(ENOMEM);
1602 ✗ descr->dec_config_descr_len = len;
1603 ✗ avio_read(&d->pb.pub, descr->dec_config_descr, len);
1604 ✗ return 0;
1605 }
1606
1607 ✗ static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len)
1608 {
1609 ✗ Mp4Descr *descr = d->active_descr;
1610 ✗ AVIOContext *const pb = &d->pb.pub;
1611 int predefined;
1612 ✗ if (!descr)
1613 ✗ return AVERROR_INVALIDDATA;
1614
1615 #define R8_CHECK_CLIP_MAX(dst, maxv) do { \
1616 descr->sl.dst = avio_r8(pb); \
1617 if (descr->sl.dst > maxv) { \
1618 descr->sl.dst = maxv; \
1619 return AVERROR_INVALIDDATA; \
1620 } \
1621 } while (0)
1622
1623 ✗ predefined = avio_r8(pb);
1624 ✗ if (!predefined) {
1625 int lengths;
1626 ✗ int flags = avio_r8(pb);
1627 ✗ descr->sl.use_au_start = !!(flags & 0x80);
1628 ✗ descr->sl.use_au_end = !!(flags & 0x40);
1629 ✗ descr->sl.use_rand_acc_pt = !!(flags & 0x20);
1630 ✗ descr->sl.use_padding = !!(flags & 0x08);
1631 ✗ descr->sl.use_timestamps = !!(flags & 0x04);
1632 ✗ descr->sl.use_idle = !!(flags & 0x02);
1633 ✗ descr->sl.timestamp_res = avio_rb32(pb);
1634 ✗ avio_rb32(pb);
1635 ✗ R8_CHECK_CLIP_MAX(timestamp_len, 63);
1636 ✗ R8_CHECK_CLIP_MAX(ocr_len, 63);
1637 ✗ R8_CHECK_CLIP_MAX(au_len, 31);
1638 ✗ descr->sl.inst_bitrate_len = avio_r8(pb);
1639 ✗ lengths = avio_rb16(pb);
1640 ✗ descr->sl.degr_prior_len = lengths >> 12;
1641 ✗ descr->sl.au_seq_num_len = (lengths >> 7) & 0x1f;
1642 ✗ descr->sl.packet_seq_num_len = (lengths >> 2) & 0x1f;
1643 ✗ } else if (!d->predefined_SLConfigDescriptor_seen){
1644 ✗ avpriv_report_missing_feature(d->s, "Predefined SLConfigDescriptor");
1645 ✗ d->predefined_SLConfigDescriptor_seen = 1;
1646 }
1647 ✗ return 0;
1648 }
1649
1650 ✗ static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
1651 int target_tag)
1652 {
1653 int tag;
1654 ✗ AVIOContext *const pb = &d->pb.pub;
1655 ✗ int len1 = ff_mp4_read_descr(d->s, pb, &tag);
1656 ✗ int ret = 0;
1657
1658 ✗ update_offsets(pb, &off, &len);
1659 ✗ if (len < 0 || len1 > len || len1 <= 0) {
1660 ✗ av_log(d->s, AV_LOG_ERROR,
1661 "Tag %x length violation new length %d bytes remaining %d\n",
1662 tag, len1, len);
1663 ✗ return AVERROR_INVALIDDATA;
1664 }
1665
1666 ✗ if (d->level++ >= MAX_LEVEL) {
1667 ✗ av_log(d->s, AV_LOG_ERROR, "Maximum MP4 descriptor level exceeded\n");
1668 ✗ ret = AVERROR_INVALIDDATA;
1669 ✗ goto done;
1670 }
1671
1672 ✗ if (target_tag && tag != target_tag) {
1673 ✗ av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag,
1674 target_tag);
1675 ✗ ret = AVERROR_INVALIDDATA;
1676 ✗ goto done;
1677 }
1678
1679 ✗ switch (tag) {
1680 ✗ case MP4IODescrTag:
1681 ✗ ret = parse_MP4IODescrTag(d, off, len1);
1682 ✗ break;
1683 ✗ case MP4ODescrTag:
1684 ✗ ret = parse_MP4ODescrTag(d, off, len1);
1685 ✗ break;
1686 ✗ case MP4ESDescrTag:
1687 ✗ ret = parse_MP4ESDescrTag(d, off, len1);
1688 ✗ break;
1689 ✗ case MP4DecConfigDescrTag:
1690 ✗ ret = parse_MP4DecConfigDescrTag(d, off, len1);
1691 ✗ break;
1692 ✗ case MP4SLDescrTag:
1693 ✗ ret = parse_MP4SLDescrTag(d, off, len1);
1694 ✗ break;
1695 }
1696
1697
1698 ✗ done:
1699 ✗ d->level--;
1700 ✗ avio_seek(pb, off + len1, SEEK_SET);
1701 ✗ return ret;
1702 }
1703
1704 ✗ static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size,
1705 Mp4Descr *descr, int *descr_count, int max_descr_count)
1706 {
1707 MP4DescrParseContext d;
1708 int ret;
1709
1710 ✗ d.predefined_SLConfigDescriptor_seen = 0;
1711
1712 ✗ ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count);
1713 ✗ if (ret < 0)
1714 ✗ return ret;
1715
1716 ✗ ret = parse_mp4_descr(&d, avio_tell(&d.pb.pub), size, MP4IODescrTag);
1717
1718 ✗ *descr_count += d.descr_count;
1719 ✗ return ret;
1720 }
1721
1722 ✗ static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size,
1723 Mp4Descr *descr, int *descr_count, int max_descr_count)
1724 {
1725 MP4DescrParseContext d;
1726 int ret;
1727
1728 ✗ ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count);
1729 ✗ if (ret < 0)
1730 ✗ return ret;
1731
1732 ✗ ret = parse_mp4_descr_arr(&d, avio_tell(&d.pb.pub), size);
1733
1734 ✗ *descr_count = d.descr_count;
1735 ✗ return ret;
1736 }
1737
1738 ✗ static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section,
1739 int section_len)
1740 {
1741 ✗ MpegTSContext *ts = filter->u.section_filter.opaque;
1742 ✗ MpegTSSectionFilter *tssf = &filter->u.section_filter;
1743 SectionHeader h;
1744 const uint8_t *p, *p_end;
1745 ✗ int mp4_descr_count = 0;
1746 ✗ Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } };
1747 int i, pid;
1748 ✗ AVFormatContext *s = ts->stream;
1749
1750 ✗ p_end = section + section_len - 4;
1751 ✗ p = section;
1752 ✗ if (parse_section_header(&h, &p, p_end) < 0)
1753 ✗ return;
1754 ✗ if (h.tid != M4OD_TID)
1755 ✗ return;
1756 ✗ if (skip_identical(&h, tssf))
1757 ✗ return;
1758
1759 ✗ mp4_read_od(s, p, (unsigned) (p_end - p), mp4_descr, &mp4_descr_count,
1760 MAX_MP4_DESCR_COUNT);
1761
1762 ✗ for (pid = 0; pid < NB_PID_MAX; pid++) {
1763 ✗ if (!ts->pids[pid])
1764 ✗ continue;
1765 ✗ for (i = 0; i < mp4_descr_count; i++) {
1766 PESContext *pes;
1767 AVStream *st;
1768 FFStream *sti;
1769 FFIOContext pb;
1770 ✗ if (ts->pids[pid]->es_id != mp4_descr[i].es_id)
1771 ✗ continue;
1772 ✗ if (ts->pids[pid]->type != MPEGTS_PES) {
1773 ✗ av_log(s, AV_LOG_ERROR, "pid %x is not PES\n", pid);
1774 ✗ continue;
1775 }
1776 ✗ pes = ts->pids[pid]->u.pes_filter.opaque;
1777 ✗ st = pes->st;
1778 ✗ if (!st)
1779 ✗ continue;
1780 ✗ sti = ffstream(st);
1781
1782 ✗ pes->sl = mp4_descr[i].sl;
1783
1784 ✗ ffio_init_read_context(&pb, mp4_descr[i].dec_config_descr,
1785 mp4_descr[i].dec_config_descr_len);
1786 ✗ ff_mp4_read_dec_config_descr(s, st, &pb.pub);
1787 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1788 ✗ st->codecpar->extradata_size > 0)
1789 ✗ sti->need_parsing = 0;
1790 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_H264 &&
1791 ✗ st->codecpar->extradata_size > 0)
1792 ✗ sti->need_parsing = 0;
1793
1794 ✗ st->codecpar->codec_type = avcodec_get_type(st->codecpar->codec_id);
1795 ✗ sti->need_context_update = 1;
1796 }
1797 }
1798 ✗ for (i = 0; i < mp4_descr_count; i++)
1799 ✗ av_free(mp4_descr[i].dec_config_descr);
1800 }
1801
1802 ✗ static void scte_data_cb(MpegTSFilter *filter, const uint8_t *section,
1803 int section_len)
1804 {
1805 ✗ AVProgram *prg = NULL;
1806 ✗ MpegTSContext *ts = filter->u.section_filter.opaque;
1807
1808 ✗ int idx = ff_find_stream_index(ts->stream, filter->pid);
1809 ✗ if (idx < 0)
1810 ✗ return;
1811
1812 /**
1813 * In case we receive an SCTE-35 packet before mpegts context is fully
1814 * initialized.
1815 */
1816 ✗ if (!ts->pkt)
1817 ✗ return;
1818
1819 ✗ new_data_packet(section, section_len, ts->pkt);
1820 ✗ ts->pkt->stream_index = idx;
1821 ✗ prg = av_find_program_from_stream(ts->stream, NULL, idx);
1822 ✗ if (prg && prg->pcr_pid != -1 && prg->discard != AVDISCARD_ALL) {
1823 ✗ MpegTSFilter *f = ts->pids[prg->pcr_pid];
1824 ✗ if (f && f->last_pcr != -1)
1825 ✗ ts->pkt->pts = ts->pkt->dts = f->last_pcr/SYSTEM_CLOCK_FREQUENCY_DIVISOR;
1826 }
1827 ✗ ts->stop_parse = 1;
1828
1829 }
1830
1831 static const uint8_t opus_coupled_stream_cnt[9] = {
1832 1, 0, 1, 1, 2, 2, 2, 3, 3
1833 };
1834
1835 static const uint8_t opus_stream_cnt[9] = {
1836 1, 1, 1, 2, 2, 3, 4, 4, 5,
1837 };
1838
1839 static const uint8_t opus_channel_map[8][8] = {
1840 { 0 },
1841 { 0,1 },
1842 { 0,2,1 },
1843 { 0,1,2,3 },
1844 { 0,4,1,2,3 },
1845 { 0,4,1,2,3,5 },
1846 { 0,4,1,2,3,5,6 },
1847 { 0,6,1,2,3,4,5,7 },
1848 };
1849
1850 90 static int parse_mpeg2_extension_descriptor(AVFormatContext *fc, AVStream *st, int prg_id,
1851 const uint8_t **pp, const uint8_t *desc_end)
1852 {
1853 90 MpegTSContext *ts = fc->priv_data;
1854 90 int ext_tag = get8(pp, desc_end);
1855
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 90 switch (ext_tag) {
1857 ✗ case JXS_VIDEO_DESCRIPTOR: /* JPEG-XS video descriptor*/
1858 {
1859 int horizontal_size, vertical_size, schar;
1860 int colour_primaries, transfer_characteristics, matrix_coefficients, video_full_range_flag;
1861 int descriptor_version, interlace_mode, n_fields;
1862 unsigned frat;
1863
1864 ✗ if (desc_end - *pp < 29)
1865 ✗ return AVERROR_INVALIDDATA;
1866
1867 ✗ descriptor_version = get8(pp, desc_end);
1868 ✗ if (descriptor_version) {
1869 ✗ av_log(fc, AV_LOG_WARNING, "Unsupported JPEG-XS descriptor version (%d != 0)", descriptor_version);
1870 ✗ return AVERROR_INVALIDDATA;
1871 }
1872
1873 ✗ horizontal_size = get16(pp, desc_end);
1874 ✗ vertical_size = get16(pp, desc_end);
1875 ✗ *pp += 4; /* brat */
1876 ✗ frat = bytestream_get_be32(pp);
1877 ✗ schar = get16(pp, desc_end);
1878 ✗ *pp += 2; /* Ppih */
1879 ✗ *pp += 2; /* Plev */
1880 ✗ *pp += 4; /* max_buffer_size */
1881 ✗ *pp += 1; /* buffer_model_type */
1882 ✗ colour_primaries = get8(pp, desc_end);
1883 ✗ transfer_characteristics = get8(pp, desc_end);
1884 ✗ matrix_coefficients = get8(pp, desc_end);
1885 ✗ video_full_range_flag = (get8(pp, desc_end) & 0x80) == 0x80 ? 1 : 0;
1886
1887 ✗ interlace_mode = (frat >> 30) & 0x3;
1888 ✗ if (interlace_mode == 3) {
1889 ✗ av_log(fc, AV_LOG_WARNING, "Unknown JPEG XS interlace mode 3");
1890 ✗ return AVERROR_INVALIDDATA;
1891 }
1892
1893 ✗ st->codecpar->field_order = interlace_mode == 0 ? AV_FIELD_PROGRESSIVE
1894 ✗ : (interlace_mode == 1 ? AV_FIELD_TT : AV_FIELD_BB);
1895 ✗ n_fields = st->codecpar->field_order == AV_FIELD_PROGRESSIVE ? 1 : 2;
1896
1897 ✗ st->codecpar->width = horizontal_size;
1898 ✗ st->codecpar->height = vertical_size * n_fields;
1899
1900 ✗ if (frat != 0) {
1901 ✗ int framerate_num = (frat & 0x0000FFFFU);
1902 ✗ int framerate_den = ((frat >> 24) & 0x0000003FU);
1903
1904 ✗ if (framerate_den == 2) {
1905 ✗ framerate_num *= 1000;
1906 ✗ framerate_den = 1001;
1907 ✗ } else if (framerate_den != 1) {
1908 ✗ av_log(fc, AV_LOG_WARNING, "Unknown JPEG XS framerate denominator code %u", framerate_den);
1909 ✗ return AVERROR_INVALIDDATA;
1910 }
1911
1912 ✗ st->codecpar->framerate.num = framerate_num;
1913 ✗ st->codecpar->framerate.den = framerate_den;
1914 }
1915
1916 ✗ switch (schar & 0xf) {
1917 ✗ case 0: st->codecpar->format = AV_PIX_FMT_YUV422P10LE; break;
1918 ✗ case 1: st->codecpar->format = AV_PIX_FMT_YUV444P10LE; break;
1919 ✗ default:
1920 ✗ av_log(fc, AV_LOG_WARNING, "Unknown JPEG XS sampling format");
1921 ✗ break;
1922 }
1923
1924 ✗ st->codecpar->color_range = video_full_range_flag ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1925 ✗ st->codecpar->color_primaries = colour_primaries;
1926 ✗ st->codecpar->color_trc = transfer_characteristics;
1927 ✗ st->codecpar->color_space = matrix_coefficients;
1928 }
1929 ✗ break;
1930 45 case LCEVC_VIDEO_DESCRIPTOR:
1931 {
1932 45 struct Program *p = get_program(ts, prg_id);
1933 struct StreamGroup *stg;
1934 45 int lcevc_stream_tag = get8(pp, desc_end);
1935 int i;
1936
1937
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 45 if (!p)
1938 ✗ return 0;
1939
1940
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 45 if (st->codecpar->codec_id != AV_CODEC_ID_LCEVC)
1941 24 return AVERROR_INVALIDDATA;
1942
1943
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 21 for (i = 0; i < p->nb_stream_groups; i++) {
1944 21 stg = &p->stream_groups[i];
1945
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 21 if (stg->type != AV_STREAM_GROUP_PARAMS_LCEVC)
1946 ✗ continue;
1947
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 21 if (stg->id == lcevc_stream_tag)
1948 21 break;
1949 }
1950
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 21 if (i == p->nb_stream_groups) {
1951 ✗ if (p->nb_stream_groups == MAX_STREAMS_PER_PROGRAM)
1952 ✗ return AVERROR(EINVAL);
1953 ✗ p->nb_stream_groups++;
1954 }
1955
1956 21 stg = &p->stream_groups[i];
1957 21 stg->id = lcevc_stream_tag;
1958 21 stg->type = AV_STREAM_GROUP_PARAMS_LCEVC;
1959
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 42 for (i = 0; i < stg->nb_streams; i++) {
1960
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 21 if (stg->streams[i]->codecpar->codec_id == AV_CODEC_ID_LCEVC)
1961 ✗ break;
1962 }
1963
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 21 if (i == stg->nb_streams) {
1964
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 21 if (stg->nb_streams == MAX_STREAMS_PER_PROGRAM)
1965 ✗ return AVERROR(EINVAL);
1966 21 stg->streams[stg->nb_streams++] = st;
1967 } else
1968 ✗ stg->streams[i] = st;
1969
1970
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 21 av_assert0(i < stg->nb_streams);
1971 }
1972 21 break;
1973 45 case LCEVC_LINKAGE_DESCRIPTOR:
1974 {
1975 45 struct Program *p = get_program(ts, prg_id);
1976 45 int num_lcevc_stream_tags = get8(pp, desc_end);
1977
1978
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 45 if (!p)
1979 ✗ return 0;
1980
1981
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 45 if (st->codecpar->codec_id == AV_CODEC_ID_LCEVC)
1982 ✗ return AVERROR_INVALIDDATA;
1983
1984
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 90 for (int i = 0; i < num_lcevc_stream_tags; i++) {
1985 45 struct StreamGroup *stg = NULL;
1986 45 int lcevc_stream_tag = get8(pp, desc_end);;
1987 int j;
1988
1989
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 45 for (j = 0; j < p->nb_stream_groups; j++) {
1990 ✗ stg = &p->stream_groups[j];
1991 ✗ if (stg->type != AV_STREAM_GROUP_PARAMS_LCEVC)
1992 ✗ continue;
1993 ✗ if (stg->id == lcevc_stream_tag)
1994 ✗ break;
1995 }
1996
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 45 if (j == p->nb_stream_groups) {
1997
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 45 if (p->nb_stream_groups == MAX_STREAMS_PER_PROGRAM)
1998 ✗ return AVERROR(EINVAL);
1999 45 p->nb_stream_groups++;
2000 }
2001
2002 45 stg = &p->stream_groups[j];
2003 45 stg->id = lcevc_stream_tag;
2004 45 stg->type = AV_STREAM_GROUP_PARAMS_LCEVC;
2005
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 45 for (j = 0; j < stg->nb_streams; j++) {
2006 ✗ if (stg->streams[j]->index == st->index)
2007 ✗ break;
2008 }
2009
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 45 if (j == stg->nb_streams) {
2010
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 45 if (stg->nb_streams == MAX_STREAMS_PER_PROGRAM)
2011 ✗ return AVERROR(EINVAL);
2012 45 stg->streams[stg->nb_streams++] = st;
2013 }
2014 }
2015 }
2016 45 break;
2017 ✗ default:
2018 ✗ break;
2019 }
2020
2021 66 return 0;
2022 }
2023
2024 1149 int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type, int prg_id,
2025 const uint8_t **pp, const uint8_t *desc_list_end,
2026 Mp4Descr *mp4_descr, int mp4_descr_count, int pid,
2027 MpegTSContext *ts)
2028 {
2029 1149 FFStream *const sti = ffstream(st);
2030 const uint8_t *desc_end;
2031 int desc_len, desc_tag, desc_es_id, ext_desc_tag, channels, channel_config_code;
2032 char language[252];
2033 int i;
2034
2035 1149 desc_tag = get8(pp, desc_list_end);
2036
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 1149 if (desc_tag < 0)
2037 636 return AVERROR_INVALIDDATA;
2038 513 desc_len = get8(pp, desc_list_end);
2039
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 513 if (desc_len < 0)
2040 ✗ return AVERROR_INVALIDDATA;
2041 513 desc_end = *pp + desc_len;
2042
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 513 if (desc_end > desc_list_end)
2043 ✗ return AVERROR_INVALIDDATA;
2044
2045 513 av_log(fc, AV_LOG_TRACE, "tag: 0x%02x len=%d\n", desc_tag, desc_len);
2046
2047
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 513 if ((st->codecpar->codec_id == AV_CODEC_ID_NONE || sti->request_probe > 0) &&
2048 stream_type == STREAM_TYPE_PRIVATE_DATA)
2049 16 mpegts_find_stream_type(st, desc_tag, DESC_types);
2050
2051
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 513 switch (desc_tag) {
2052 ✗ case VIDEO_STREAM_DESCRIPTOR:
2053 ✗ if (get8(pp, desc_end) & 0x1) {
2054 ✗ st->disposition |= AV_DISPOSITION_STILL_IMAGE;
2055 }
2056 ✗ break;
2057 ✗ case SL_DESCRIPTOR:
2058 ✗ desc_es_id = get16(pp, desc_end);
2059 ✗ if (desc_es_id < 0)
2060 ✗ break;
2061 ✗ if (ts && ts->pids[pid])
2062 ✗ ts->pids[pid]->es_id = desc_es_id;
2063 ✗ for (i = 0; i < mp4_descr_count; i++)
2064 ✗ if (mp4_descr[i].dec_config_descr_len &&
2065 ✗ mp4_descr[i].es_id == desc_es_id) {
2066 FFIOContext pb;
2067 ✗ ffio_init_read_context(&pb, mp4_descr[i].dec_config_descr,
2068 ✗ mp4_descr[i].dec_config_descr_len);
2069 ✗ ff_mp4_read_dec_config_descr(fc, st, &pb.pub);
2070 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
2071 ✗ st->codecpar->extradata_size > 0) {
2072 ✗ sti->need_parsing = 0;
2073 ✗ sti->need_context_update = 1;
2074 }
2075 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4SYSTEMS)
2076 ✗ mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1);
2077 }
2078 ✗ break;
2079 ✗ case FMC_DESCRIPTOR:
2080 ✗ if (get16(pp, desc_end) < 0)
2081 ✗ break;
2082 ✗ if (mp4_descr_count > 0 &&
2083 ✗ (st->codecpar->codec_id == AV_CODEC_ID_AAC_LATM ||
2084 ✗ (sti->request_probe == 0 && st->codecpar->codec_id == AV_CODEC_ID_NONE) ||
2085 ✗ sti->request_probe > 0) &&
2086 ✗ mp4_descr->dec_config_descr_len && mp4_descr->es_id == pid) {
2087 FFIOContext pb;
2088 ✗ ffio_init_read_context(&pb, mp4_descr->dec_config_descr,
2089 mp4_descr->dec_config_descr_len);
2090 ✗ ff_mp4_read_dec_config_descr(fc, st, &pb.pub);
2091 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
2092 ✗ st->codecpar->extradata_size > 0) {
2093 ✗ sti->request_probe = sti->need_parsing = 0;
2094 ✗ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
2095 ✗ sti->need_context_update = 1;
2096 }
2097 }
2098 ✗ break;
2099 ✗ case TELETEXT_DESCRIPTOR:
2100 {
2101 ✗ uint8_t *extradata = NULL;
2102 ✗ int language_count = desc_len / 5, ret;
2103
2104 ✗ if (desc_len > 0 && desc_len % 5 != 0)
2105 ✗ return AVERROR_INVALIDDATA;
2106
2107 ✗ if (language_count > 0) {
2108 /* 4 bytes per language code (3 bytes) with comma or NUL byte should fit language buffer */
2109 ✗ av_assert0(language_count <= sizeof(language) / 4);
2110
2111 ✗ if (st->codecpar->extradata == NULL) {
2112 ✗ ret = ff_alloc_extradata(st->codecpar, language_count * 2);
2113 ✗ if (ret < 0)
2114 ✗ return ret;
2115 }
2116
2117 ✗ if (st->codecpar->extradata_size < language_count * 2)
2118 ✗ return AVERROR_INVALIDDATA;
2119
2120 ✗ extradata = st->codecpar->extradata;
2121
2122 ✗ for (i = 0; i < language_count; i++) {
2123 ✗ language[i * 4 + 0] = get8(pp, desc_end);
2124 ✗ language[i * 4 + 1] = get8(pp, desc_end);
2125 ✗ language[i * 4 + 2] = get8(pp, desc_end);
2126 ✗ language[i * 4 + 3] = ',';
2127
2128 ✗ memcpy(extradata, *pp, 2);
2129 ✗ extradata += 2;
2130
2131 ✗ *pp += 2;
2132 }
2133
2134 ✗ language[i * 4 - 1] = 0;
2135 ✗ av_dict_set(&st->metadata, "language", language, 0);
2136 ✗ sti->need_context_update = 1;
2137 }
2138 }
2139 ✗ break;
2140 9 case SUBTITLING_DESCRIPTOR:
2141 {
2142 /* 8 bytes per DVB subtitle substream data:
2143 * ISO_639_language_code (3 bytes),
2144 * subtitling_type (1 byte),
2145 * composition_page_id (2 bytes),
2146 * ancillary_page_id (2 bytes) */
2147 9 int language_count = desc_len / 8, ret;
2148
2149
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 9 if (desc_len > 0 && desc_len % 8 != 0)
2150 ✗ return AVERROR_INVALIDDATA;
2151
2152
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 9 if (language_count > 1) {
2153 ✗ avpriv_request_sample(fc, "DVB subtitles with multiple languages");
2154 }
2155
2156
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 9 if (language_count > 0) {
2157 uint8_t *extradata;
2158
2159 /* 4 bytes per language code (3 bytes) with comma or NUL byte should fit language buffer */
2160
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 9 av_assert0(language_count <= sizeof(language) / 4);
2161
2162
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 9 if (st->codecpar->extradata == NULL) {
2163 3 ret = ff_alloc_extradata(st->codecpar, language_count * 5);
2164
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 3 if (ret < 0)
2165 ✗ return ret;
2166 }
2167
2168
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 9 if (st->codecpar->extradata_size < language_count * 5)
2169 ✗ return AVERROR_INVALIDDATA;
2170
2171 9 extradata = st->codecpar->extradata;
2172
2173
2/2
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 18 for (i = 0; i < language_count; i++) {
2174 9 language[i * 4 + 0] = get8(pp, desc_end);
2175 9 language[i * 4 + 1] = get8(pp, desc_end);
2176 9 language[i * 4 + 2] = get8(pp, desc_end);
2177 9 language[i * 4 + 3] = ',';
2178
2179 /* hearing impaired subtitles detection using subtitling_type */
2180
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 9 switch (*pp[0]) {
2181 ✗ case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */
2182 case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */
2183 case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */
2184 case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */
2185 case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */
2186 case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */
2187 ✗ st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
2188 ✗ break;
2189 }
2190
2191 9 extradata[4] = get8(pp, desc_end); /* subtitling_type */
2192 9 memcpy(extradata, *pp, 4); /* composition_page_id and ancillary_page_id */
2193 9 extradata += 5;
2194
2195 9 *pp += 4;
2196 }
2197
2198 9 language[i * 4 - 1] = 0;
2199 9 av_dict_set(&st->metadata, "language", language, 0);
2200 9 sti->need_context_update = 1;
2201 }
2202 }
2203 9 break;
2204 252 case ISO_639_LANGUAGE_DESCRIPTOR:
2205
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 498 for (i = 0; i + 4 <= desc_len; i += 4) {
2206 246 language[i + 0] = get8(pp, desc_end);
2207 246 language[i + 1] = get8(pp, desc_end);
2208 246 language[i + 2] = get8(pp, desc_end);
2209 246 language[i + 3] = ',';
2210
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 246 switch (get8(pp, desc_end)) {
2211 ✗ case 0x01:
2212 ✗ st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS;
2213 ✗ break;
2214 ✗ case 0x02:
2215 ✗ st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
2216 ✗ break;
2217 60 case 0x03:
2218 60 st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
2219 60 st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
2220 60 break;
2221 }
2222 }
2223
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 252 if (i && language[0]) {
2224 242 language[i - 1] = 0;
2225 /* don't overwrite language, as it may already have been set by
2226 * another, more specific descriptor (e.g. supplementary audio) */
2227 242 av_dict_set(&st->metadata, "language", language, AV_DICT_DONT_OVERWRITE);
2228 }
2229 252 break;
2230 53 case REGISTRATION_DESCRIPTOR:
2231 53 st->codecpar->codec_tag = bytestream_get_le32(pp);
2232 53 av_log(fc, AV_LOG_TRACE, "reg_desc=%.4s\n", (char *)&st->codecpar->codec_tag);
2233
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 53 if (st->codecpar->codec_id == AV_CODEC_ID_NONE || sti->request_probe > 0) {
2234 3 mpegts_find_stream_type(st, st->codecpar->codec_tag, REGD_types);
2235
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 3 if (st->codecpar->codec_tag == MKTAG('B', 'S', 'S', 'D'))
2236 2 sti->request_probe = 50;
2237 }
2238 53 break;
2239 31 case STREAM_IDENTIFIER_DESCRIPTOR:
2240 31 sti->stream_identifier = 1 + get8(pp, desc_end);
2241 31 break;
2242 4 case METADATA_DESCRIPTOR:
2243
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 4 if (get16(pp, desc_end) == 0xFFFF)
2244 4 *pp += 4;
2245
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 4 if (get8(pp, desc_end) == 0xFF) {
2246 4 st->codecpar->codec_tag = bytestream_get_le32(pp);
2247
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 4 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
2248 1 mpegts_find_stream_type(st, st->codecpar->codec_tag, METADATA_types);
2249 }
2250 4 break;
2251 4 case DVB_EXTENSION_DESCRIPTOR: /* DVB extension descriptor */
2252 4 ext_desc_tag = get8(pp, desc_end);
2253
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 4 if (ext_desc_tag < 0)
2254 ✗ return AVERROR_INVALIDDATA;
2255
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 4 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS &&
2256 ext_desc_tag == 0x80) { /* User defined (provisional Opus) */
2257
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 3 if (!st->codecpar->extradata) {
2258 1 st->codecpar->extradata = av_mallocz(sizeof(opus_default_extradata) +
2259 AV_INPUT_BUFFER_PADDING_SIZE);
2260
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 1 if (!st->codecpar->extradata)
2261 ✗ return AVERROR(ENOMEM);
2262
2263 1 st->codecpar->extradata_size = sizeof(opus_default_extradata);
2264 1 memcpy(st->codecpar->extradata, opus_default_extradata, sizeof(opus_default_extradata));
2265
2266 1 channel_config_code = get8(pp, desc_end);
2267
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 1 if (channel_config_code < 0)
2268 ✗ return AVERROR_INVALIDDATA;
2269
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 1 if (channel_config_code <= 0x8) {
2270
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 1 st->codecpar->extradata[9] = channels = channel_config_code ? channel_config_code : 2;
2271 1 AV_WL32(&st->codecpar->extradata[12], 48000);
2272
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 1 st->codecpar->extradata[18] = channel_config_code ? (channels > 2) : /* Dual Mono */ 255;
2273 1 st->codecpar->extradata[19] = opus_stream_cnt[channel_config_code];
2274 1 st->codecpar->extradata[20] = opus_coupled_stream_cnt[channel_config_code];
2275 1 memcpy(&st->codecpar->extradata[21], opus_channel_map[channels - 1], channels);
2276
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 1 st->codecpar->extradata_size = st->codecpar->extradata[18] ? 21 + channels : 19;
2277 } else {
2278 ✗ avpriv_request_sample(fc, "Opus in MPEG-TS - channel_config_code > 0x8");
2279 }
2280 1 sti->need_parsing = AVSTREAM_PARSE_FULL;
2281 1 sti->need_context_update = 1;
2282 }
2283 }
2284
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (ext_desc_tag == SUPPLEMENTARY_AUDIO_DESCRIPTOR) {
2285 int flags;
2286
2287 ✗ if (desc_len < 1)
2288 ✗ return AVERROR_INVALIDDATA;
2289 ✗ flags = get8(pp, desc_end);
2290
2291 ✗ if ((flags & 0x80) == 0) /* mix_type */
2292 ✗ st->disposition |= AV_DISPOSITION_DEPENDENT;
2293
2294 ✗ switch ((flags >> 2) & 0x1F) { /* editorial_classification */
2295 ✗ case 0x01:
2296 ✗ st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
2297 ✗ st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
2298 ✗ break;
2299 ✗ case 0x02:
2300 ✗ st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
2301 ✗ break;
2302 ✗ case 0x03:
2303 ✗ st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
2304 ✗ break;
2305 }
2306
2307 ✗ if (flags & 0x01) { /* language_code_present */
2308 ✗ if (desc_len < 4)
2309 ✗ return AVERROR_INVALIDDATA;
2310 ✗ language[0] = get8(pp, desc_end);
2311 ✗ language[1] = get8(pp, desc_end);
2312 ✗ language[2] = get8(pp, desc_end);
2313 ✗ language[3] = 0;
2314
2315 /* This language always has to override a possible
2316 * ISO 639 language descriptor language */
2317 ✗ if (language[0])
2318 ✗ av_dict_set(&st->metadata, "language", language, 0);
2319 }
2320 }
2321 4 break;
2322 6 case AC3_DESCRIPTOR:
2323 {
2324 6 int component_type_flag = get8(pp, desc_end) & (1 << 7);
2325
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
 6 if (component_type_flag) {
2326 ✗ int component_type = get8(pp, desc_end);
2327 ✗ int service_type_mask = 0x38; // 0b00111000
2328 ✗ int service_type = ((component_type & service_type_mask) >> 3);
2329 ✗ if (service_type == 0x02 /* 0b010 */) {
2330 ✗ st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
2331 ✗ av_log(ts ? ts->stream : fc, AV_LOG_DEBUG, "New track disposition for id %u: %u\n", st->id, st->disposition);
2332 }
2333 }
2334 }
2335 6 break;
2336 ✗ case ENHANCED_AC3_DESCRIPTOR:
2337 {
2338 ✗ int component_type_flag = get8(pp, desc_end) & (1 << 7);
2339 ✗ if (component_type_flag) {
2340 ✗ int component_type = get8(pp, desc_end);
2341 ✗ int service_type_mask = 0x38; // 0b00111000
2342 ✗ int service_type = ((component_type & service_type_mask) >> 3);
2343 ✗ if (service_type == 0x02 /* 0b010 */) {
2344 ✗ st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
2345 ✗ av_log(ts ? ts->stream : fc, AV_LOG_DEBUG, "New track disposition for id %u: %u\n", st->id, st->disposition);
2346 }
2347 }
2348 }
2349 ✗ break;
2350 ✗ case DATA_COMPONENT_DESCRIPTOR:
2351 // STD-B24, fascicle 3, chapter 4 defines private_stream_1
2352 // for captions
2353 ✗ if (stream_type == STREAM_TYPE_PRIVATE_DATA) {
2354 // This structure is defined in STD-B10, part 1, listing 5.4 and
2355 // part 2, 6.2.20).
2356 // Listing of data_component_ids is in STD-B10, part 2, Annex J.
2357 // Component tag limits are documented in TR-B14, fascicle 2,
2358 // Vol. 3, Section 2, 4.2.8.1
2359 ✗ int actual_component_tag = sti->stream_identifier - 1;
2360 ✗ int picked_profile = AV_PROFILE_UNKNOWN;
2361 ✗ int data_component_id = get16(pp, desc_end);
2362 ✗ if (data_component_id < 0)
2363 ✗ return AVERROR_INVALIDDATA;
2364
2365 ✗ switch (data_component_id) {
2366 ✗ case 0x0008:
2367 // [0x30..0x37] are component tags utilized for
2368 // non-mobile captioning service ("profile A").
2369 ✗ if (actual_component_tag >= 0x30 &&
2370 actual_component_tag <= 0x37) {
2371 ✗ picked_profile = AV_PROFILE_ARIB_PROFILE_A;
2372 }
2373 ✗ break;
2374 ✗ case 0x0012:
2375 // component tag 0x87 signifies a mobile/partial reception
2376 // (1seg) captioning service ("profile C").
2377 ✗ if (actual_component_tag == 0x87) {
2378 ✗ picked_profile = AV_PROFILE_ARIB_PROFILE_C;
2379 }
2380 ✗ break;
2381 ✗ default:
2382 ✗ break;
2383 }
2384
2385 ✗ if (picked_profile == AV_PROFILE_UNKNOWN)
2386 ✗ break;
2387
2388 ✗ st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
2389 ✗ st->codecpar->codec_id = AV_CODEC_ID_ARIB_CAPTION;
2390 ✗ if (st->codecpar->profile != picked_profile) {
2391 ✗ st->codecpar->profile = picked_profile;
2392 ✗ sti->need_context_update = 1;
2393 }
2394 ✗ sti->request_probe = 0;
2395 ✗ sti->need_parsing = 0;
2396 }
2397 ✗ break;
2398 ✗ case DOVI_VIDEO_STREAM_DESCRIPTOR:
2399 {
2400 uint32_t buf;
2401 AVDOVIDecoderConfigurationRecord *dovi;
2402 size_t dovi_size;
2403 ✗ int dependency_pid = -1; // Unset
2404
2405 ✗ if (desc_end - *pp < 4) // (8 + 8 + 7 + 6 + 1 + 1 + 1) / 8
2406 ✗ return AVERROR_INVALIDDATA;
2407
2408 ✗ dovi = av_dovi_alloc(&dovi_size);
2409 ✗ if (!dovi)
2410 ✗ return AVERROR(ENOMEM);
2411
2412 ✗ dovi->dv_version_major = get8(pp, desc_end);
2413 ✗ dovi->dv_version_minor = get8(pp, desc_end);
2414 ✗ buf = get16(pp, desc_end);
2415 ✗ dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits
2416 ✗ dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits
2417 ✗ dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit
2418 ✗ dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit
2419 ✗ dovi->bl_present_flag = buf & 0x01; // 1 bit
2420 ✗ if (!dovi->bl_present_flag && desc_end - *pp >= 2) {
2421 ✗ buf = get16(pp, desc_end);
2422 ✗ dependency_pid = buf >> 3; // 13 bits
2423 }
2424 ✗ if (desc_end - *pp >= 1) { // 8 bits
2425 ✗ buf = get8(pp, desc_end);
2426 ✗ dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits
2427 ✗ dovi->dv_md_compression = (buf >> 2) & 0x03; // 2 bits
2428 } else {
2429 // 0 stands for None
2430 // Dolby Vision V1.2.93 profiles and levels
2431 ✗ dovi->dv_bl_signal_compatibility_id = 0;
2432 ✗ dovi->dv_md_compression = AV_DOVI_COMPRESSION_NONE;
2433 }
2434
2435 ✗ if (!av_packet_side_data_add(&st->codecpar->coded_side_data,
2436 ✗ &st->codecpar->nb_coded_side_data,
2437 AV_PKT_DATA_DOVI_CONF,
2438 (uint8_t *)dovi, dovi_size, 0)) {
2439 ✗ av_free(dovi);
2440 ✗ return AVERROR(ENOMEM);
2441 }
2442
2443 ✗ av_log(fc, AV_LOG_TRACE, "DOVI, version: %d.%d, profile: %d, level: %d, "
2444 "rpu flag: %d, el flag: %d, bl flag: %d, dependency_pid: %d, "
2445 "compatibility id: %d, compression: %d\n",
2446 ✗ dovi->dv_version_major, dovi->dv_version_minor,
2447 ✗ dovi->dv_profile, dovi->dv_level,
2448 ✗ dovi->rpu_present_flag,
2449 ✗ dovi->el_present_flag,
2450 ✗ dovi->bl_present_flag,
2451 dependency_pid,
2452 ✗ dovi->dv_bl_signal_compatibility_id,
2453 ✗ dovi->dv_md_compression);
2454 }
2455 ✗ break;
2456 90 case EXTENSION_DESCRIPTOR: /* descriptor extension */
2457 {
2458 90 int ret = parse_mpeg2_extension_descriptor(fc, st, prg_id, pp, desc_end);
2459
2460
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 66 times.
 90 if (ret < 0)
2461 24 return ret;
2462 }
2463 66 break;
2464 64 default:
2465 64 break;
2466 }
2467 489 *pp = desc_end;
2468 489 return 0;
2469 }
2470
2471 12 static AVStream *find_matching_stream(MpegTSContext *ts, int pid, unsigned int programid,
2472 int stream_identifier, int pmt_stream_idx, struct Program *p)
2473 {
2474 12 AVFormatContext *s = ts->stream;
2475 12 AVStream *found = NULL;
2476
2477
1/2
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✓ Branch 1 taken 12 times.
 12 if (stream_identifier) { /* match based on "stream identifier descriptor" if present */
2478 ✗ for (int i = 0; i < p->nb_streams; i++) {
2479 ✗ if (p->streams[i].stream_identifier == stream_identifier)
2480 ✗ if (!found || pmt_stream_idx == i) /* fallback to idx based guess if multiple streams have the same identifier */
2481 ✗ found = s->streams[p->streams[i].idx];
2482 }
2483
2/2
✓ Branch 0 taken 7 times.
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 12 } else if (pmt_stream_idx < p->nb_streams) { /* match based on position within the PMT */
2484 7 found = s->streams[p->streams[pmt_stream_idx].idx];
2485 }
2486
2487
2/2
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 12 if (found) {
2488 7 av_log(ts->stream, AV_LOG_VERBOSE,
2489 "reusing existing %s stream %d (pid=0x%x) for new pid=0x%x\n",
2490 7 av_get_media_type_string(found->codecpar->codec_type),
2491 found->index, found->id, pid);
2492 }
2493
2494 12 return found;
2495 }
2496
2497 660 static int parse_stream_identifier_desc(const uint8_t *p, const uint8_t *p_end)
2498 {
2499 660 const uint8_t **pp = &p;
2500 const uint8_t *desc_list_end;
2501 const uint8_t *desc_end;
2502 int desc_list_len;
2503 int desc_len, desc_tag;
2504
2505 660 desc_list_len = get16(pp, p_end);
2506
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 660 times.
 660 if (desc_list_len < 0)
2507 ✗ return -1;
2508 660 desc_list_len &= 0xfff;
2509 660 desc_list_end = p + desc_list_len;
2510
1/2
✓ Branch 0 taken 660 times.
✗ Branch 1 not taken.
 660 if (desc_list_end > p_end)
2511 ✗ return -1;
2512
2513 while (1) {
2514 1133 desc_tag = get8(pp, desc_list_end);
2515
2/2
✓ Branch 0 taken 632 times.
✓ Branch 1 taken 501 times.
 1133 if (desc_tag < 0)
2516 632 return -1;
2517 501 desc_len = get8(pp, desc_list_end);
2518
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 501 times.
 501 if (desc_len < 0)
2519 ✗ return -1;
2520 501 desc_end = *pp + desc_len;
2521
1/2
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✓ Branch 1 taken 501 times.
 501 if (desc_end > desc_list_end)
2522 ✗ return -1;
2523
2524
2/2
✓ Branch 0 taken 28 times.
✓ Branch 1 taken 473 times.
 501 if (desc_tag == STREAM_IDENTIFIER_DESCRIPTOR) {
2525 28 return get8(pp, desc_end);
2526 }
2527 473 *pp = desc_end;
2528 }
2529
2530 return -1;
2531 }
2532
2533 166 static int is_pes_stream(int stream_type, uint32_t prog_reg_desc)
2534 {
2535
2/3
✗ Branch 0 not taken.
✓ Branch 1 taken 30 times.
✓ Branch 2 taken 136 times.
 166 switch (stream_type) {
2536 ✗ case STREAM_TYPE_PRIVATE_SECTION:
2537 case STREAM_TYPE_ISO_IEC_14496_SECTION:
2538 ✗ return 0;
2539 30 case STREAM_TYPE_SCTE_DATA_SCTE_35:
2540 /* This User Private stream_type value is used by multiple organizations
2541 for different things. ANSI/SCTE 35 splice_info_section() is a
2542 private_section() not a PES_packet(). */
2543 30 return !(prog_reg_desc == AV_RL32("CUEI"));
2544 136 default:
2545 136 return 1;
2546 }
2547 }
2548
2549 351 static void create_stream_groups(MpegTSContext *ts, const struct Program *prg)
2550 {
2551
2/2
✓ Branch 0 taken 45 times.
✓ Branch 1 taken 351 times.
 396 for (int i = 0; i < prg->nb_stream_groups; i++) {
2552 45 const struct StreamGroup *grp = &prg->stream_groups[i];
2553 AVStreamGroup *stg;
2554 int j;
2555
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 21 times.
 45 if (grp->nb_streams < 2)
2556 24 continue;
2557
2/2
✓ Branch 0 taken 15 times.
✓ Branch 1 taken 6 times.
 21 for (j = 0; j < ts->stream->nb_stream_groups; j++) {
2558 15 stg = ts->stream->stream_groups[j];
2559
1/2
✓ Branch 0 taken 15 times.
✗ Branch 1 not taken.
 15 if (stg->id == grp->id)
2560 15 break;
2561 }
2562
2/2
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✓ Branch 1 taken 15 times.
 21 if (j == ts->stream->nb_stream_groups)
2563 6 stg = avformat_stream_group_create(ts->stream, grp->type, NULL);
2564 else
2565 15 continue;
2566
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
 6 if (!stg)
2567 ✗ continue;
2568
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
 6 av_assert0(grp->type == AV_STREAM_GROUP_PARAMS_LCEVC);
2569 6 stg->id = grp->id;
2570
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 6 times.
 18 for (int j = 0; j < grp->nb_streams; j++) {
2571 12 int ret = avformat_stream_group_add_stream(stg, grp->streams[j]);
2572
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
 12 if (ret < 0) {
2573 ✗ ff_remove_stream_group(ts->stream, stg);
2574 ✗ continue;
2575 }
2576
2/2
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 6 times.
 12 if (grp->streams[j]->codecpar->codec_id == AV_CODEC_ID_LCEVC)
2577 6 stg->params.lcevc->lcevc_index = stg->nb_streams - 1;
2578 }
2579 }
2580 351 }
2581
2582 3660 static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
2583 {
2584 3660 MpegTSContext *ts = filter->u.section_filter.opaque;
2585 3660 MpegTSSectionFilter *tssf = &filter->u.section_filter;
2586 struct Program old_program;
2587 3660 SectionHeader h1, *h = &h1;
2588 PESContext *pes;
2589 AVStream *st;
2590 const uint8_t *p, *p_end, *desc_list_end;
2591 int program_info_length, pcr_pid, pid, stream_type;
2592 int desc_list_len;
2593 3660 uint32_t prog_reg_desc = 0; /* registration descriptor */
2594 3660 int stream_identifier = -1;
2595 struct Program *prg;
2596
2597 3660 int mp4_descr_count = 0;
2598 3660 Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } };
2599 int i;
2600
2601 3660 av_log(ts->stream, AV_LOG_TRACE, "PMT: len %i\n", section_len);
2602 hex_dump_debug(ts->stream, section, section_len);
2603
2604 3660 p_end = section + section_len - 4;
2605 3660 p = section;
2606
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 3660 times.
 3660 if (parse_section_header(h, &p, p_end) < 0)
2607 3309 return;
2608
2/2
✓ Branch 0 taken 75 times.
✓ Branch 1 taken 3585 times.
 3660 if (h->tid != PMT_TID)
2609 75 return;
2610
1/2
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✓ Branch 1 taken 3585 times.
 3585 if (!h->current_next)
2611 ✗ return;
2612
2/2
✓ Branch 1 taken 3234 times.
✓ Branch 2 taken 351 times.
 3585 if (skip_identical(h, tssf))
2613 3234 return;
2614
2615 351 av_log(ts->stream, AV_LOG_TRACE, "sid=0x%x sec_num=%d/%d version=%d tid=%d\n",
2616 351 h->id, h->sec_num, h->last_sec_num, h->version, h->tid);
2617
2618
1/4
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✓ Branch 1 taken 351 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 351 if (!ts->scan_all_pmts && ts->skip_changes)
2619 ✗ return;
2620
2621 351 prg = get_program(ts, h->id);
2622
1/2
✓ Branch 0 taken 351 times.
✗ Branch 1 not taken.
 351 if (prg)
2623 351 old_program = *prg;
2624 else
2625 ✗ clear_program(&old_program);
2626
2627
1/4
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✓ Branch 1 taken 351 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 351 if (ts->skip_unknown_pmt && !prg)
2628 ✗ return;
2629
3/6
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✗ Branch 1 not taken.
✓ Branch 2 taken 351 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
✓ Branch 5 taken 351 times.
 351 if (prg && prg->nb_pids && prg->pids[0] != ts->current_pid)
2630 ✗ return;
2631
2/2
✓ Branch 0 taken 212 times.
✓ Branch 1 taken 139 times.
 351 if (!ts->skip_clear)
2632 212 clear_avprogram(ts, h->id);
2633 351 clear_program(prg);
2634 351 add_pid_to_program(prg, ts->current_pid);
2635
2636 351 pcr_pid = get16(&p, p_end);
2637
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 351 times.
 351 if (pcr_pid < 0)
2638 ✗ return;
2639 351 pcr_pid &= 0x1fff;
2640 351 add_pid_to_program(prg, pcr_pid);
2641 351 update_av_program_info(ts->stream, h->id, pcr_pid, h->version);
2642
2643 351 av_log(ts->stream, AV_LOG_TRACE, "pcr_pid=0x%x\n", pcr_pid);
2644
2645 351 program_info_length = get16(&p, p_end);
2646
2647
2/4
✓ Branch 0 taken 351 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 351 times.
 351 if (program_info_length < 0 || (program_info_length & 0xFFF) > p_end - p)
2648 ✗ return;
2649 351 program_info_length &= 0xfff;
2650
2/2
✓ Branch 0 taken 294 times.
✓ Branch 1 taken 351 times.
 645 while (program_info_length >= 2) {
2651 uint8_t tag, len;
2652 294 tag = get8(&p, p_end);
2653 294 len = get8(&p, p_end);
2654
2655 294 av_log(ts->stream, AV_LOG_TRACE, "program tag: 0x%02x len=%d\n", tag, len);
2656
2657 294 program_info_length -= 2;
2658
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 294 times.
 294 if (len > program_info_length)
2659 // something else is broken, exit the program_descriptors_loop
2660 ✗ break;
2661 294 program_info_length -= len;
2662
1/4
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✓ Branch 1 taken 294 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 294 if (tag == IOD_DESCRIPTOR && len >= 2) {
2663 ✗ get8(&p, p_end); // scope
2664 ✗ get8(&p, p_end); // label
2665 ✗ len -= 2;
2666 ✗ mp4_read_iods(ts->stream, p, len, mp4_descr + mp4_descr_count,
2667 &mp4_descr_count, MAX_MP4_DESCR_COUNT - mp4_descr_count);
2668
3/4
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✓ Branch 1 taken 150 times.
✓ Branch 2 taken 144 times.
✗ Branch 3 not taken.
 294 } else if (tag == REGISTRATION_DESCRIPTOR && len >= 4) {
2669 144 prog_reg_desc = bytestream_get_le32(&p);
2670 144 len -= 4;
2671 }
2672 294 p += len;
2673 }
2674 351 p += program_info_length;
2675
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 351 times.
 351 if (p >= p_end)
2676 ✗ goto out;
2677
2678 // stop parsing after pmt, we found header
2679
2/2
✓ Branch 0 taken 76 times.
✓ Branch 1 taken 275 times.
 351 if (!ts->pkt)
2680 76 ts->stop_parse = 2;
2681
2682
1/2
✓ Branch 0 taken 351 times.
✗ Branch 1 not taken.
 351 if (prg)
2683 351 prg->pmt_found = 1;
2684
2685
1/2
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✗ Branch 1 not taken.
 1011 for (i = 0; i < MAX_STREAMS_PER_PROGRAM; i++) {
2686 1011 st = 0;
2687 1011 pes = NULL;
2688 1011 stream_type = get8(&p, p_end);
2689
2/2
✓ Branch 0 taken 351 times.
✓ Branch 1 taken 660 times.
 1011 if (stream_type < 0)
2690 351 break;
2691 660 pid = get16(&p, p_end);
2692
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 660 times.
 660 if (pid < 0)
2693 ✗ goto out;
2694 660 pid &= 0x1fff;
2695
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 660 times.
 660 if (pid == ts->current_pid)
2696 ✗ goto out;
2697
2698 660 stream_identifier = parse_stream_identifier_desc(p, p_end) + 1;
2699
2700 /* now create stream */
2701
4/4
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✓ Branch 1 taken 146 times.
✓ Branch 2 taken 494 times.
✓ Branch 3 taken 20 times.
 660 if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
2702 494 pes = ts->pids[pid]->u.pes_filter.opaque;
2703
3/4
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✓ Branch 1 taken 478 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 16 times.
 494 if (ts->merge_pmt_versions && !pes->st) {
2704 ✗ st = find_matching_stream(ts, pid, h->id, stream_identifier, i, &old_program);
2705 ✗ if (st) {
2706 ✗ pes->st = st;
2707 ✗ pes->stream_type = stream_type;
2708 ✗ pes->merged_st = 1;
2709 }
2710 }
2711
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 494 times.
 494 if (!pes->st) {
2712 ✗ pes->st = avformat_new_stream(pes->stream, NULL);
2713 ✗ if (!pes->st)
2714 ✗ goto out;
2715 ✗ pes->st->id = pes->pid;
2716 }
2717 494 st = pes->st;
2718
2/2
✓ Branch 1 taken 136 times.
✓ Branch 2 taken 30 times.
 166 } else if (is_pes_stream(stream_type, prog_reg_desc)) {
2719
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 136 times.
 136 if (ts->pids[pid])
2720 ✗ mpegts_close_filter(ts, ts->pids[pid]); // wrongly added sdt filter probably
2721 136 pes = add_pes_stream(ts, pid, pcr_pid);
2722
4/6
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 128 times.
✓ Branch 2 taken 8 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 8 times.
✗ Branch 5 not taken.
 136 if (ts->merge_pmt_versions && pes && !pes->st) {
2723 8 st = find_matching_stream(ts, pid, h->id, stream_identifier, i, &old_program);
2724
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 4 times.
 8 if (st) {
2725 4 pes->st = st;
2726 4 pes->stream_type = stream_type;
2727 4 pes->merged_st = 1;
2728 }
2729 }
2730
3/4
✓ Branch 0 taken 136 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 132 times.
✓ Branch 3 taken 4 times.
 136 if (pes && !pes->st) {
2731 132 st = avformat_new_stream(pes->stream, NULL);
2732
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 132 times.
 132 if (!st)
2733 ✗ goto out;
2734 132 st->id = pes->pid;
2735 }
2736 } else {
2737 30 int idx = ff_find_stream_index(ts->stream, pid);
2738
2/2
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 10 times.
 30 if (idx >= 0) {
2739 20 st = ts->stream->streams[idx];
2740 }
2741
4/4
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 24 times.
✓ Branch 2 taken 4 times.
✓ Branch 3 taken 2 times.
 30 if (ts->merge_pmt_versions && !st) {
2742 4 st = find_matching_stream(ts, pid, h->id, stream_identifier, i, &old_program);
2743 }
2744
2/2
✓ Branch 0 taken 7 times.
✓ Branch 1 taken 23 times.
 30 if (!st) {
2745 7 st = avformat_new_stream(ts->stream, NULL);
2746
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7 times.
 7 if (!st)
2747 ✗ goto out;
2748 7 st->id = pid;
2749 7 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2750
2/4
✓ Branch 0 taken 7 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 7 times.
✗ Branch 3 not taken.
 7 if (stream_type == STREAM_TYPE_SCTE_DATA_SCTE_35 && prog_reg_desc == AV_RL32("CUEI")) {
2751 7 mpegts_find_stream_type(st, stream_type, SCTE_types);
2752 7 mpegts_open_section_filter(ts, pid, scte_data_cb, ts, 1);
2753 }
2754 }
2755 }
2756
2757
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 660 times.
 660 if (!st)
2758 ✗ goto out;
2759
2760
4/4
✓ Branch 0 taken 630 times.
✓ Branch 1 taken 30 times.
✓ Branch 2 taken 142 times.
✓ Branch 3 taken 488 times.
 660 if (pes && pes->stream_type != stream_type)
2761 142 mpegts_set_stream_info(st, pes, stream_type, prog_reg_desc);
2762
2763 660 add_pid_to_program(prg, pid);
2764
1/2
✓ Branch 0 taken 660 times.
✗ Branch 1 not taken.
 660 if (prg) {
2765 660 prg->streams[i].idx = st->index;
2766 660 prg->streams[i].stream_identifier = stream_identifier;
2767 660 prg->nb_streams++;
2768 }
2769
2770 660 av_program_add_stream_index(ts->stream, h->id, st->index);
2771
2772 660 desc_list_len = get16(&p, p_end);
2773
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 660 times.
 660 if (desc_list_len < 0)
2774 ✗ goto out;
2775 660 desc_list_len &= 0xfff;
2776 660 desc_list_end = p + desc_list_len;
2777
1/2
✓ Branch 0 taken 660 times.
✗ Branch 1 not taken.
 660 if (desc_list_end > p_end)
2778 ✗ goto out;
2779 for (;;) {
2780
2/2
✓ Branch 1 taken 660 times.
✓ Branch 2 taken 485 times.
 1145 if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, h->id, &p,
2781 desc_list_end, mp4_descr,
2782 mp4_descr_count, pid, ts) < 0)
2783 660 break;
2784
2785
2/6
✓ Branch 0 taken 485 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 485 times.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 485 if (pes && prog_reg_desc == AV_RL32("HDMV") &&
2786 ✗ stream_type == STREAM_TYPE_BLURAY_AUDIO_TRUEHD && pes->sub_st) {
2787 ✗ av_program_add_stream_index(ts->stream, h->id,
2788 ✗ pes->sub_st->index);
2789 ✗ pes->sub_st->codecpar->codec_tag = st->codecpar->codec_tag;
2790 }
2791 }
2792 660 p = desc_list_end;
2793 }
2794
2795
1/2
✓ Branch 0 taken 351 times.
✗ Branch 1 not taken.
 351 if (!ts->pids[pcr_pid])
2796 ✗ mpegts_open_pcr_filter(ts, pcr_pid);
2797
2798 351 out:
2799
1/2
✓ Branch 0 taken 351 times.
✗ Branch 1 not taken.
 351 if (prg)
2800 351 create_stream_groups(ts, prg);
2801
2802
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 351 times.
 351 for (i = 0; i < mp4_descr_count; i++)
2803 ✗ av_free(mp4_descr[i].dec_config_descr);
2804 }
2805
2806 3687 static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
2807 {
2808 3687 MpegTSContext *ts = filter->u.section_filter.opaque;
2809 3687 MpegTSSectionFilter *tssf = &filter->u.section_filter;
2810 3687 SectionHeader h1, *h = &h1;
2811 const uint8_t *p, *p_end;
2812 int sid, pmt_pid;
2813 3687 int nb_prg = 0;
2814 AVProgram *program;
2815
2816 3687 av_log(ts->stream, AV_LOG_TRACE, "PAT:\n");
2817 hex_dump_debug(ts->stream, section, section_len);
2818
2819 3687 p_end = section + section_len - 4;
2820 3687 p = section;
2821
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 3687 times.
 3687 if (parse_section_header(h, &p, p_end) < 0)
2822 3414 return;
2823
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3687 times.
 3687 if (h->tid != PAT_TID)
2824 ✗ return;
2825
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3687 times.
 3687 if (!h->current_next)
2826 ✗ return;
2827
2/2
✓ Branch 0 taken 712 times.
✓ Branch 1 taken 2975 times.
 3687 if (ts->skip_changes)
2828 712 return;
2829
2830
2/2
✓ Branch 1 taken 2702 times.
✓ Branch 2 taken 273 times.
 2975 if (skip_identical(h, tssf))
2831 2702 return;
2832 273 ts->id = h->id;
2833
2834 for (;;) {
2835 546 sid = get16(&p, p_end);
2836
2/2
✓ Branch 0 taken 273 times.
✓ Branch 1 taken 273 times.
 546 if (sid < 0)
2837 273 break;
2838 273 pmt_pid = get16(&p, p_end);
2839
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 273 times.
 273 if (pmt_pid < 0)
2840 ✗ break;
2841 273 pmt_pid &= 0x1fff;
2842
2843
2/4
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 273 times.
 273 if (pmt_pid <= 0x000F || pmt_pid == 0x1FFF) {
2844 ✗ av_log(ts->stream, AV_LOG_WARNING,
2845 "Ignoring invalid PAT entry: sid=0x%x pid=0x%x\n", sid, pmt_pid);
2846 ✗ continue;
2847 }
2848
2849 273 av_log(ts->stream, AV_LOG_TRACE, "sid=0x%x pid=0x%x\n", sid, pmt_pid);
2850
2851
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 if (sid == 0x0000) {
2852 /* NIT info */
2853 } else {
2854 273 MpegTSFilter *fil = ts->pids[pmt_pid];
2855 struct Program *prg;
2856 273 program = av_new_program(ts->stream, sid);
2857
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 if (program) {
2858 273 program->program_num = sid;
2859 273 program->pmt_pid = pmt_pid;
2860 }
2861
2/2
✓ Branch 0 taken 197 times.
✓ Branch 1 taken 76 times.
 273 if (fil)
2862
1/2
✓ Branch 0 taken 197 times.
✗ Branch 1 not taken.
 197 if ( fil->type != MPEGTS_SECTION
2863
1/2
✓ Branch 0 taken 197 times.
✗ Branch 1 not taken.
 197 || fil->pid != pmt_pid
2864
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 197 times.
 197 || fil->u.section_filter.section_cb != pmt_cb)
2865 ✗ mpegts_close_filter(ts, ts->pids[pmt_pid]);
2866
2867
2/2
✓ Branch 0 taken 76 times.
✓ Branch 1 taken 197 times.
 273 if (!ts->pids[pmt_pid])
2868 76 mpegts_open_section_filter(ts, pmt_pid, pmt_cb, ts, 1);
2869 273 prg = add_program(ts, sid);
2870
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 if (prg) {
2871 273 unsigned prg_idx = prg - ts->prg;
2872
3/4
✓ Branch 0 taken 197 times.
✓ Branch 1 taken 76 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 197 times.
 273 if (prg->nb_pids && prg->pids[0] != pmt_pid)
2873 ✗ clear_program(prg);
2874 273 add_pid_to_program(prg, pmt_pid);
2875
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 273 times.
 273 if (prg_idx > nb_prg)
2876 ✗ FFSWAP(struct Program, ts->prg[nb_prg], ts->prg[prg_idx]);
2877
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 if (prg_idx >= nb_prg)
2878 273 nb_prg++;
2879 } else
2880 ✗ nb_prg = 0;
2881 }
2882 }
2883 273 ts->nb_prg = nb_prg;
2884
2885
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 if (sid < 0) {
2886 int i,j;
2887
2/2
✓ Branch 0 taken 273 times.
✓ Branch 1 taken 273 times.
 546 for (j=0; j<ts->stream->nb_programs; j++) {
2888
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 for (i = 0; i < ts->nb_prg; i++)
2889
1/2
✓ Branch 0 taken 273 times.
✗ Branch 1 not taken.
 273 if (ts->prg[i].id == ts->stream->programs[j]->id)
2890 273 break;
2891
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 273 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 273 if (i==ts->nb_prg && !ts->skip_clear)
2892 ✗ clear_avprogram(ts, ts->stream->programs[j]->id);
2893 }
2894 }
2895 }
2896
2897 14 static void eit_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
2898 {
2899 14 MpegTSContext *ts = filter->u.section_filter.opaque;
2900 const uint8_t *p, *p_end;
2901 14 SectionHeader h1, *h = &h1;
2902
2903 /*
2904 * Sometimes we receive EPG packets but SDT table do not have
2905 * eit_pres_following or eit_sched turned on, so we open EPG
2906 * stream directly here.
2907 */
2908
2/2
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 11 times.
 14 if (!ts->epg_stream) {
2909 3 ts->epg_stream = avformat_new_stream(ts->stream, NULL);
2910
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3 times.
 3 if (!ts->epg_stream)
2911 2 return;
2912 3 ts->epg_stream->id = EIT_PID;
2913 3 ts->epg_stream->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2914 3 ts->epg_stream->codecpar->codec_id = AV_CODEC_ID_EPG;
2915 }
2916
2917
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 12 times.
 14 if (ts->epg_stream->discard == AVDISCARD_ALL)
2918 2 return;
2919
2920 12 p_end = section + section_len - 4;
2921 12 p = section;
2922
2923
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 12 times.
 12 if (parse_section_header(h, &p, p_end) < 0)
2924 ✗ return;
2925
2/4
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 12 times.
 12 if (h->tid < EIT_TID || h->tid > OEITS_END_TID)
2926 ✗ return;
2927
2928 12 av_log(ts->stream, AV_LOG_TRACE, "EIT: tid received = %.02x\n", h->tid);
2929
2930 /**
2931 * Service_id 0xFFFF is reserved, it indicates that the current EIT table
2932 * is scrambled.
2933 */
2934
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
 12 if (h->id == 0xFFFF) {
2935 ✗ av_log(ts->stream, AV_LOG_TRACE, "Scrambled EIT table received.\n");
2936 ✗ return;
2937 }
2938
2939 /**
2940 * In case we receive an EPG packet before mpegts context is fully
2941 * initialized.
2942 */
2943
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
 12 if (!ts->pkt)
2944 ✗ return;
2945
2946 12 new_data_packet(section, section_len, ts->pkt);
2947 12 ts->pkt->stream_index = ts->epg_stream->index;
2948 12 ts->stop_parse = 1;
2949 }
2950
2951 589 static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
2952 {
2953 589 MpegTSContext *ts = filter->u.section_filter.opaque;
2954 589 MpegTSSectionFilter *tssf = &filter->u.section_filter;
2955 589 SectionHeader h1, *h = &h1;
2956 const uint8_t *p, *p_end, *desc_list_end, *desc_end;
2957 int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
2958 char *name, *provider_name;
2959
2960 589 av_log(ts->stream, AV_LOG_TRACE, "SDT:\n");
2961 hex_dump_debug(ts->stream, section, section_len);
2962
2963 589 p_end = section + section_len - 4;
2964 589 p = section;
2965
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 589 times.
 589 if (parse_section_header(h, &p, p_end) < 0)
2966 432 return;
2967
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 589 times.
 589 if (h->tid != SDT_TID)
2968 ✗ return;
2969
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 589 times.
 589 if (!h->current_next)
2970 ✗ return;
2971
2/2
✓ Branch 0 taken 88 times.
✓ Branch 1 taken 501 times.
 589 if (ts->skip_changes)
2972 88 return;
2973
2/2
✓ Branch 1 taken 344 times.
✓ Branch 2 taken 157 times.
 501 if (skip_identical(h, tssf))
2974 344 return;
2975
2976 157 onid = get16(&p, p_end);
2977
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 157 times.
 157 if (onid < 0)
2978 ✗ return;
2979 157 val = get8(&p, p_end);
2980
1/2
✓ Branch 0 taken 157 times.
✗ Branch 1 not taken.
 157 if (val < 0)
2981 ✗ return;
2982 for (;;) {
2983 314 sid = get16(&p, p_end);
2984
2/2
✓ Branch 0 taken 157 times.
✓ Branch 1 taken 157 times.
 314 if (sid < 0)
2985 157 break;
2986 157 val = get8(&p, p_end);
2987
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 157 times.
 157 if (val < 0)
2988 ✗ break;
2989 157 desc_list_len = get16(&p, p_end);
2990
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 157 times.
 157 if (desc_list_len < 0)
2991 ✗ break;
2992 157 desc_list_len &= 0xfff;
2993 157 desc_list_end = p + desc_list_len;
2994
1/2
✓ Branch 0 taken 157 times.
✗ Branch 1 not taken.
 157 if (desc_list_end > p_end)
2995 ✗ break;
2996 for (;;) {
2997 314 desc_tag = get8(&p, desc_list_end);
2998
2/2
✓ Branch 0 taken 157 times.
✓ Branch 1 taken 157 times.
 314 if (desc_tag < 0)
2999 157 break;
3000 157 desc_len = get8(&p, desc_list_end);
3001 157 desc_end = p + desc_len;
3002
2/4
✓ Branch 0 taken 157 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 157 times.
✗ Branch 3 not taken.
 157 if (desc_len < 0 || desc_end > desc_list_end)
3003 break;
3004
3005 157 av_log(ts->stream, AV_LOG_TRACE, "tag: 0x%02x len=%d\n",
3006 desc_tag, desc_len);
3007
3008
1/2
✓ Branch 0 taken 157 times.
✗ Branch 1 not taken.
 157 switch (desc_tag) {
3009 157 case SERVICE_DESCRIPTOR:
3010 157 service_type = get8(&p, desc_end);
3011
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 157 times.
 157 if (service_type < 0)
3012 ✗ break;
3013 157 provider_name = getstr8(&p, desc_end);
3014
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 157 times.
 157 if (!provider_name)
3015 ✗ break;
3016 157 name = getstr8(&p, desc_end);
3017
1/2
✓ Branch 0 taken 157 times.
✗ Branch 1 not taken.
 157 if (name) {
3018 157 AVProgram *program = av_new_program(ts->stream, sid);
3019
1/2
✓ Branch 0 taken 157 times.
✗ Branch 1 not taken.
 157 if (program) {
3020 157 av_dict_set(&program->metadata, "service_name", name, 0);
3021 157 av_dict_set(&program->metadata, "service_provider",
3022 provider_name, 0);
3023 }
3024 }
3025 157 av_free(name);
3026 157 av_free(provider_name);
3027 157 break;
3028 ✗ default:
3029 ✗ break;
3030 }
3031 157 p = desc_end;
3032 }
3033 157 p = desc_list_end;
3034 }
3035 }
3036
3037 static int parse_pcr(int64_t *ppcr_high, int *ppcr_low,
3038 const uint8_t *packet);
3039
3040 /* handle one TS packet */
3041 455748 static int handle_packet(MpegTSContext *ts, const uint8_t *packet, int64_t pos)
3042 {
3043 MpegTSFilter *tss;
3044 int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
3045 has_adaptation, has_payload;
3046 const uint8_t *p, *p_end;
3047
3048 455748 pid = AV_RB16(packet + 1) & 0x1fff;
3049 455748 is_start = packet[1] & 0x40;
3050 455748 tss = ts->pids[pid];
3051
6/6
✓ Branch 0 taken 447437 times.
✓ Branch 1 taken 8311 times.
✓ Branch 2 taken 7752 times.
✓ Branch 3 taken 439685 times.
✓ Branch 4 taken 18 times.
✓ Branch 5 taken 7734 times.
 455748 if (ts->auto_guess && !tss && is_start) {
3052 18 add_pes_stream(ts, pid, -1);
3053 18 tss = ts->pids[pid];
3054 }
3055
2/2
✓ Branch 0 taken 15842 times.
✓ Branch 1 taken 439906 times.
 455748 if (!tss)
3056 15842 return 0;
3057
2/2
✓ Branch 0 taken 43024 times.
✓ Branch 1 taken 396882 times.
 439906 if (is_start)
3058 43024 tss->discard = discard_pid(ts, pid);
3059
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 439906 times.
 439906 if (tss->discard)
3060 ✗ return 0;
3061 439906 ts->current_pid = pid;
3062
3063 439906 afc = (packet[3] >> 4) & 3;
3064
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 439906 times.
 439906 if (afc == 0) /* reserved value */
3065 ✗ return 0;
3066 439906 has_adaptation = afc & 2;
3067 439906 has_payload = afc & 1;
3068 508821 is_discontinuity = has_adaptation &&
3069
4/4
✓ Branch 0 taken 68915 times.
✓ Branch 1 taken 370991 times.
✓ Branch 2 taken 68873 times.
✓ Branch 3 taken 42 times.
 508779 packet[4] != 0 && /* with length > 0 */
3070
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68873 times.
 68873 (packet[5] & 0x80); /* and discontinuity indicated */
3071
3072 /* continuity check (currently not used) */
3073 439906 cc = (packet[3] & 0xf);
3074
2/2
✓ Branch 0 taken 436987 times.
✓ Branch 1 taken 2919 times.
 439906 expected_cc = has_payload ? (tss->last_cc + 1) & 0x0f : tss->last_cc;
3075
1/2
✓ Branch 0 taken 439906 times.
✗ Branch 1 not taken.
 439906 cc_ok = pid == NULL_PID ||
3076 439906 is_discontinuity ||
3077
5/6
✓ Branch 0 taken 439906 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 438451 times.
✓ Branch 3 taken 1455 times.
✓ Branch 4 taken 437803 times.
✓ Branch 5 taken 648 times.
 879812 tss->last_cc < 0 ||
3078 expected_cc == cc;
3079
3080 439906 tss->last_cc = cc;
3081
2/2
✓ Branch 0 taken 648 times.
✓ Branch 1 taken 439258 times.
 439906 if (!cc_ok) {
3082 648 av_log(ts->stream, AV_LOG_DEBUG,
3083 "Continuity check failed for pid %d expected %d got %d\n",
3084 pid, expected_cc, cc);
3085
2/2
✓ Branch 0 taken 7 times.
✓ Branch 1 taken 641 times.
 648 if (tss->type == MPEGTS_PES) {
3086 7 PESContext *pc = tss->u.pes_filter.opaque;
3087 7 pc->flags |= AV_PKT_FLAG_CORRUPT;
3088 }
3089 }
3090
3091
2/2
✓ Branch 0 taken 13 times.
✓ Branch 1 taken 439893 times.
 439906 if (packet[1] & 0x80) {
3092 13 av_log(ts->stream, AV_LOG_DEBUG, "Packet had TEI flag set; marking as corrupt\n");
3093
1/2
✓ Branch 0 taken 13 times.
✗ Branch 1 not taken.
 13 if (tss->type == MPEGTS_PES) {
3094 13 PESContext *pc = tss->u.pes_filter.opaque;
3095 13 pc->flags |= AV_PKT_FLAG_CORRUPT;
3096 }
3097 }
3098
3099 439906 p = packet + 4;
3100
2/2
✓ Branch 0 taken 68915 times.
✓ Branch 1 taken 370991 times.
 439906 if (has_adaptation) {
3101 int64_t pcr_h;
3102 int pcr_l;
3103
2/2
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 68915 if (parse_pcr(&pcr_h, &pcr_l, packet) == 0)
3104 31712 tss->last_pcr = pcr_h * SYSTEM_CLOCK_FREQUENCY_DIVISOR + pcr_l;
3105 /* skip adaptation field */
3106 68915 p += p[0] + 1;
3107 }
3108 /* if past the end of packet, ignore */
3109 439906 p_end = packet + TS_PACKET_SIZE;
3110
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 439906 if (p >= p_end || !has_payload)
3111 2932 return 0;
3112
3113
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 436974 if (pos >= 0) {
3114
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 436974 av_assert0(pos >= TS_PACKET_SIZE);
3115 436974 ts->pos47_full = pos - TS_PACKET_SIZE;
3116 }
3117
3118
2/2
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 436974 if (tss->type == MPEGTS_SECTION) {
3119
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✓ Branch 1 taken 35 times.
 7985 if (is_start) {
3120 /* pointer field present */
3121 7950 len = *p++;
3122
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 7950 if (len > p_end - p)
3123 ✗ return 0;
3124
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 7950 if (len && cc_ok) {
3125 /* write remaining section bytes */
3126 ✗ write_section_data(ts, tss,
3127 p, len, 0);
3128 /* check whether filter has been closed */
3129 ✗ if (!ts->pids[pid])
3130 ✗ return 0;
3131 }
3132 7950 p += len;
3133
1/2
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✗ Branch 1 not taken.
 7950 if (p < p_end) {
3134 7950 write_section_data(ts, tss,
3135 7950 p, p_end - p, 1);
3136 }
3137 } else {
3138
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✗ Branch 1 not taken.
 35 if (cc_ok) {
3139 35 write_section_data(ts, tss,
3140 35 p, p_end - p, 0);
3141 }
3142 }
3143
3144 // stop find_stream_info from waiting for more streams
3145 // when all programs have received a PMT
3146
4/4
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✓ Branch 1 taken 2574 times.
✓ Branch 2 taken 19 times.
✓ Branch 3 taken 5392 times.
 7985 if (ts->stream->ctx_flags & AVFMTCTX_NOHEADER && ts->scan_all_pmts <= 0) {
3147 int i;
3148
2/2
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✓ Branch 1 taken 19 times.
 38 for (i = 0; i < ts->nb_prg; i++) {
3149
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 19 if (!ts->prg[i].pmt_found)
3150 ✗ break;
3151 }
3152
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 19 if (i == ts->nb_prg && ts->nb_prg > 0) {
3153 19 av_log(ts->stream, AV_LOG_DEBUG, "All programs have pmt, headers found\n");
3154 19 ts->stream->ctx_flags &= ~AVFMTCTX_NOHEADER;
3155 }
3156 }
3157
3158 } else {
3159 int ret;
3160 // Note: The position here points actually behind the current packet.
3161
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 428989 if (tss->type == MPEGTS_PES) {
3162
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 428989 if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
3163 428989 pos - ts->raw_packet_size)) < 0)
3164 ✗ return ret;
3165 }
3166 }
3167
3168 436974 return 0;
3169 }
3170
3171 66 static int mpegts_resync(AVFormatContext *s, int seekback, const uint8_t *current_packet)
3172 {
3173 66 MpegTSContext *ts = s->priv_data;
3174 66 AVIOContext *pb = s->pb;
3175 int c, i;
3176 66 uint64_t pos = avio_tell(pb);
3177 66 int64_t back = FFMIN(seekback, pos);
3178
3179 //Special case for files like 01c56b0dc1.ts
3180
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 66 if (current_packet[0] == 0x80 && current_packet[12] == SYNC_BYTE && pos >= TS_PACKET_SIZE) {
3181 ✗ avio_seek(pb, 12 - TS_PACKET_SIZE, SEEK_CUR);
3182 ✗ return 0;
3183 }
3184
3185 66 avio_seek(pb, -back, SEEK_CUR);
3186
3187
1/2
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 4580 for (i = 0; i < ts->resync_size; i++) {
3188 4580 c = avio_r8(pb);
3189
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 4580 if (avio_feof(pb))
3190 ✗ return AVERROR_EOF;
3191
2/2
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✓ Branch 1 taken 4514 times.
 4580 if (c == SYNC_BYTE) {
3192 int new_packet_size, ret;
3193 66 avio_seek(pb, -1, SEEK_CUR);
3194 66 pos = avio_tell(pb);
3195 66 ret = ffio_ensure_seekback(pb, PROBE_PACKET_MAX_BUF);
3196
1/2
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✓ Branch 1 taken 66 times.
 66 if (ret < 0)
3197 ✗ return ret;
3198 66 new_packet_size = get_packet_size(s);
3199
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 66 times.
 66 if (new_packet_size > 0 && new_packet_size != ts->raw_packet_size) {
3200 ✗ av_log(ts->stream, AV_LOG_WARNING, "changing packet size to %d\n", new_packet_size);
3201 ✗ ts->raw_packet_size = new_packet_size;
3202 }
3203 66 avio_seek(pb, pos, SEEK_SET);
3204 66 return 0;
3205 }
3206 }
3207 ✗ av_log(s, AV_LOG_ERROR,
3208 "max resync size reached, could not find sync byte\n");
3209 /* no sync found */
3210 ✗ return AVERROR_INVALIDDATA;
3211 }
3212
3213 /* return AVERROR_something if error or EOF. Return 0 if OK. */
3214 456247 static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size,
3215 const uint8_t **data)
3216 {
3217 456247 AVIOContext *pb = s->pb;
3218 int len;
3219
3220 // 192 bytes source packet that start with a 4 bytes TP_extra_header
3221 // followed by 188 bytes of TS packet. The sync byte is at offset 4, so skip
3222 // the first 4 bytes otherwise we'll end up syncing to the wrong packet.
3223
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✓ Branch 1 taken 428475 times.
 456247 if (raw_packet_size == TS_DVHS_PACKET_SIZE)
3224 27772 avio_skip(pb, 4);
3225
3226 for (;;) {
3227 456313 len = ffio_read_indirect(pb, buf, TS_PACKET_SIZE, data);
3228
2/2
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✓ Branch 1 taken 455814 times.
 456313 if (len != TS_PACKET_SIZE)
3229
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✓ Branch 1 taken 58 times.
 499 return len < 0 ? len : AVERROR_EOF;
3230 /* check packet sync byte */
3231
2/2
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✓ Branch 1 taken 455748 times.
 455814 if ((*data)[0] != SYNC_BYTE) {
3232 /* find a new packet start */
3233
3234
1/2
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✓ Branch 2 taken 66 times.
 66 if (mpegts_resync(s, raw_packet_size, *data) < 0)
3235 ✗ return AVERROR(EAGAIN);
3236 else
3237 66 continue;
3238 } else {
3239 455748 break;
3240 }
3241 }
3242 455748 return 0;
3243 }
3244
3245 455748 static void finished_reading_packet(AVFormatContext *s, int raw_packet_size)
3246 {
3247 455748 AVIOContext *pb = s->pb;
3248 int skip;
3249
2/2
✓ Branch 0 taken 27754 times.
✓ Branch 1 taken 427994 times.
 455748 if (raw_packet_size == TS_DVHS_PACKET_SIZE)
3250 27754 skip = raw_packet_size - TS_DVHS_PACKET_SIZE;
3251 else
3252 427994 skip = raw_packet_size - TS_PACKET_SIZE;
3253
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 455748 times.
 455748 if (skip > 0)
3254 ✗ avio_skip(pb, skip);
3255 455748 }
3256
3257 34731 static int handle_packets(MpegTSContext *ts, int64_t nb_packets)
3258 {
3259 34731 AVFormatContext *s = ts->stream;
3260 uint8_t packet[TS_PACKET_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
3261 const uint8_t *data;
3262 int64_t packet_num;
3263 34731 int ret = 0;
3264
3265
2/2
✓ Branch 1 taken 319 times.
✓ Branch 2 taken 34412 times.
 34731 if (avio_tell(s->pb) != ts->last_pos) {
3266 int i;
3267 319 av_log(ts->stream, AV_LOG_TRACE, "Skipping after seek\n");
3268 /* seek detected, flush pes buffer */
3269
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✓ Branch 1 taken 319 times.
 2613567 for (i = 0; i < NB_PID_MAX; i++) {
3270
2/2
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✓ Branch 1 taken 2611314 times.
 2613248 if (ts->pids[i]) {
3271
2/2
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✓ Branch 1 taken 1300 times.
 1934 if (ts->pids[i]->type == MPEGTS_PES) {
3272 634 PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
3273 634 av_buffer_unref(&pes->buffer);
3274 634 pes->data_index = 0;
3275 634 pes->state = MPEGTS_SKIP; /* skip until pes header */
3276
1/2
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✗ Branch 1 not taken.
 1300 } else if (ts->pids[i]->type == MPEGTS_SECTION) {
3277 1300 ts->pids[i]->u.section_filter.last_ver = -1;
3278 }
3279 1934 ts->pids[i]->last_cc = -1;
3280 1934 ts->pids[i]->last_pcr = -1;
3281 }
3282 }
3283 }
3284
3285 34731 ts->stop_parse = 0;
3286 34731 packet_num = 0;
3287 34731 memset(packet + TS_PACKET_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3288 for (;;) {
3289 490479 packet_num++;
3290
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✓ Branch 2 taken 8387 times.
✗ Branch 3 not taken.
 490479 if (nb_packets != 0 && packet_num >= nb_packets ||
3291
2/2
✓ Branch 0 taken 76 times.
✓ Branch 1 taken 490403 times.
 490479 ts->stop_parse > 1) {
3292 76 ret = AVERROR(EAGAIN);
3293 76 break;
3294 }
3295
2/2
✓ Branch 0 taken 34156 times.
✓ Branch 1 taken 456247 times.
 490403 if (ts->stop_parse > 0)
3296 34156 break;
3297
3298 456247 ret = read_packet(s, packet, ts->raw_packet_size, &data);
3299
2/2
✓ Branch 0 taken 499 times.
✓ Branch 1 taken 455748 times.
 456247 if (ret != 0)
3300 499 break;
3301 455748 ret = handle_packet(ts, data, avio_tell(s->pb));
3302 455748 finished_reading_packet(s, ts->raw_packet_size);
3303
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 455748 times.
 455748 if (ret != 0)
3304 ✗ break;
3305 }
3306 34731 ts->last_pos = avio_tell(s->pb);
3307 34731 return ret;
3308 }
3309
3310 7480 static int mpegts_probe(const AVProbeData *p)
3311 {
3312 7480 const int size = p->buf_size;
3313 7480 int maxscore = 0;
3314 7480 int sumscore = 0;
3315 int i;
3316 7480 int check_count = size / TS_FEC_PACKET_SIZE;
3317 #define CHECK_COUNT 10
3318 #define CHECK_BLOCK 100
3319
3320
2/2
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✓ Branch 1 taken 7465 times.
 7480 if (!check_count)
3321 15 return 0;
3322
3323
2/2
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✓ Branch 1 taken 7465 times.
 33210 for (i = 0; i<check_count; i+=CHECK_BLOCK) {
3324 25745 int left = FFMIN(check_count - i, CHECK_BLOCK);
3325 25745 int score = analyze(p->buf + TS_PACKET_SIZE *i, TS_PACKET_SIZE *left, TS_PACKET_SIZE , 1);
3326 25745 int dvhs_score = analyze(p->buf + TS_DVHS_PACKET_SIZE*i, TS_DVHS_PACKET_SIZE*left, TS_DVHS_PACKET_SIZE, 1);
3327 25745 int fec_score = analyze(p->buf + TS_FEC_PACKET_SIZE *i, TS_FEC_PACKET_SIZE *left, TS_FEC_PACKET_SIZE , 1);
3328 25745 score = FFMAX3(score, dvhs_score, fec_score);
3329 25745 sumscore += score;
3330 25745 maxscore = FFMAX(maxscore, score);
3331 }
3332
3333 7465 sumscore = sumscore * CHECK_COUNT / check_count;
3334 7465 maxscore = maxscore * CHECK_COUNT / CHECK_BLOCK;
3335
3336 ff_dlog(0, "TS score: %d %d\n", sumscore, maxscore);
3337
3338
3/4
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✓ Branch 3 taken 3352 times.
 7465 if (check_count > CHECK_COUNT && sumscore > 6) {
3339 ✗ return AVPROBE_SCORE_MAX + sumscore - CHECK_COUNT;
3340
4/4
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✓ Branch 1 taken 360 times.
✓ Branch 2 taken 62 times.
✓ Branch 3 taken 7043 times.
 7465 } else if (check_count >= CHECK_COUNT && sumscore > 6) {
3341 62 return AVPROBE_SCORE_MAX/2 + sumscore - CHECK_COUNT;
3342
3/4
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✓ Branch 3 taken 7043 times.
 7403 } else if (check_count >= CHECK_COUNT && maxscore > 6) {
3343 ✗ return AVPROBE_SCORE_MAX/2 + sumscore - CHECK_COUNT;
3344
2/2
✓ Branch 0 taken 5 times.
✓ Branch 1 taken 7398 times.
 7403 } else if (sumscore > 6) {
3345 5 return 2;
3346 } else {
3347 7398 return 0;
3348 }
3349 }
3350
3351 /* return the 90kHz PCR and the extension for the 27MHz PCR. return
3352 * (-1) if not available */
3353 68915 static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, const uint8_t *packet)
3354 {
3355 int afc, len, flags;
3356 const uint8_t *p;
3357 unsigned int v;
3358
3359 68915 afc = (packet[3] >> 4) & 3;
3360
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 68915 times.
 68915 if (afc <= 1)
3361 ✗ return AVERROR_INVALIDDATA;
3362 68915 p = packet + 4;
3363 68915 len = p[0];
3364 68915 p++;
3365
2/2
✓ Branch 0 taken 42 times.
✓ Branch 1 taken 68873 times.
 68915 if (len == 0)
3366 42 return AVERROR_INVALIDDATA;
3367 68873 flags = *p++;
3368 68873 len--;
3369
2/2
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✓ Branch 1 taken 31712 times.
 68873 if (!(flags & 0x10))
3370 37161 return AVERROR_INVALIDDATA;
3371
1/2
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✓ Branch 1 taken 31712 times.
 31712 if (len < 6)
3372 ✗ return AVERROR_INVALIDDATA;
3373 31712 v = AV_RB32(p);
3374 31712 *ppcr_high = ((int64_t) v << 1) | (p[4] >> 7);
3375 31712 *ppcr_low = ((p[4] & 1) << 8) | p[5];
3376 31712 return 0;
3377 }
3378
3379 152 static void seek_back(AVFormatContext *s, AVIOContext *pb, int64_t pos) {
3380
3381 /* NOTE: We attempt to seek on non-seekable files as well, as the
3382 * probe buffer usually is big enough. Only warn if the seek failed
3383 * on files where the seek should work. */
3384
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 152 times.
 152 if (avio_seek(pb, pos, SEEK_SET) < 0)
3385 ✗ av_log(s, (pb->seekable & AVIO_SEEKABLE_NORMAL) ? AV_LOG_ERROR : AV_LOG_INFO, "Unable to seek back to the start\n");
3386 152 }
3387
3388 76 static int mpegts_read_header(AVFormatContext *s)
3389 {
3390 76 MpegTSContext *ts = s->priv_data;
3391 76 AVIOContext *pb = s->pb;
3392 76 int64_t pos, probesize = s->probesize;
3393 76 int64_t seekback = FFMAX(s->probesize, (int64_t)ts->resync_size + PROBE_PACKET_MAX_BUF);
3394
3395
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 76 times.
 76 if (ffio_ensure_seekback(pb, seekback) < 0)
3396 ✗ av_log(s, AV_LOG_WARNING, "Failed to allocate buffers for seekback\n");
3397
3398 76 pos = avio_tell(pb);
3399 76 ts->raw_packet_size = get_packet_size(s);
3400
1/2
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✓ Branch 1 taken 76 times.
 76 if (ts->raw_packet_size <= 0) {
3401 ✗ av_log(s, AV_LOG_WARNING, "Could not detect TS packet size, defaulting to non-FEC/DVHS\n");
3402 ✗ ts->raw_packet_size = TS_PACKET_SIZE;
3403 }
3404 76 ts->stream = s;
3405 76 ts->auto_guess = 0;
3406
3407
1/2
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✗ Branch 1 not taken.
 76 if (s->iformat == &ff_mpegts_demuxer.p) {
3408 /* normal demux */
3409
3410 /* first do a scan to get all the services */
3411 76 seek_back(s, pb, pos);
3412
3413 76 mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
3414 76 mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
3415 76 mpegts_open_section_filter(ts, EIT_PID, eit_cb, ts, 1);
3416
3417 76 handle_packets(ts, probesize / ts->raw_packet_size);
3418 /* if could not find service, enable auto_guess */
3419
3420 76 ts->auto_guess = 1;
3421
3422 76 av_log(ts->stream, AV_LOG_TRACE, "tuning done\n");
3423
3424 76 s->ctx_flags |= AVFMTCTX_NOHEADER;
3425 } else {
3426 AVStream *st;
3427 int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
3428 int64_t pcrs[2], pcr_h;
3429 uint8_t packet[TS_PACKET_SIZE];
3430 const uint8_t *data;
3431
3432 /* only read packets */
3433
3434 ✗ st = avformat_new_stream(s, NULL);
3435 ✗ if (!st)
3436 ✗ return AVERROR(ENOMEM);
3437 ✗ avpriv_set_pts_info(st, 60, 1, 27000000);
3438 ✗ st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
3439 ✗ st->codecpar->codec_id = AV_CODEC_ID_MPEG2TS;
3440
3441 /* we iterate until we find two PCRs to estimate the bitrate */
3442 ✗ pcr_pid = -1;
3443 ✗ nb_pcrs = 0;
3444 ✗ nb_packets = 0;
3445 for (;;) {
3446 ✗ ret = read_packet(s, packet, ts->raw_packet_size, &data);
3447 ✗ if (ret < 0)
3448 ✗ return ret;
3449 ✗ pid = AV_RB16(data + 1) & 0x1fff;
3450 ✗ if ((pcr_pid == -1 || pcr_pid == pid) &&
3451 ✗ parse_pcr(&pcr_h, &pcr_l, data) == 0) {
3452 ✗ finished_reading_packet(s, ts->raw_packet_size);
3453 ✗ pcr_pid = pid;
3454 ✗ pcrs[nb_pcrs] = pcr_h * SYSTEM_CLOCK_FREQUENCY_DIVISOR + pcr_l;
3455 ✗ nb_pcrs++;
3456 ✗ if (nb_pcrs >= 2) {
3457 ✗ if (pcrs[1] - pcrs[0] > 0) {
3458 /* the difference needs to be positive to make sense for bitrate computation */
3459 ✗ break;
3460 } else {
3461 ✗ av_log(ts->stream, AV_LOG_WARNING, "invalid pcr pair %"PRId64" >= %"PRId64"\n", pcrs[0], pcrs[1]);
3462 ✗ pcrs[0] = pcrs[1];
3463 ✗ nb_pcrs--;
3464 }
3465 }
3466 } else {
3467 ✗ finished_reading_packet(s, ts->raw_packet_size);
3468 }
3469 ✗ nb_packets++;
3470 }
3471
3472 /* NOTE1: the bitrate is computed without the FEC */
3473 /* NOTE2: it is only the bitrate of the start of the stream */
3474 ✗ ts->pcr_incr = pcrs[1] - pcrs[0];
3475 ✗ ts->cur_pcr = pcrs[0] - ts->pcr_incr * (nb_packets - 1);
3476 ✗ s->bit_rate = TS_PACKET_SIZE * 8 * 27000000LL / ts->pcr_incr;
3477 ✗ st->codecpar->bit_rate = s->bit_rate;
3478 ✗ st->start_time = ts->cur_pcr;
3479 ✗ av_log(ts->stream, AV_LOG_TRACE, "start=%0.3f pcr=%0.3f incr=%"PRId64"\n",
3480 ✗ st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
3481 }
3482
3483 76 seek_back(s, pb, pos);
3484 76 return 0;
3485 }
3486
3487 #define MAX_PACKET_READAHEAD ((128 * 1024) / 188)
3488
3489 ✗ static int mpegts_raw_read_packet(AVFormatContext *s, AVPacket *pkt)
3490 {
3491 ✗ MpegTSContext *ts = s->priv_data;
3492 int ret, i;
3493 int64_t pcr_h, next_pcr_h, pos;
3494 int pcr_l, next_pcr_l;
3495 uint8_t pcr_buf[12];
3496 const uint8_t *data;
3497
3498 ✗ if ((ret = av_new_packet(pkt, TS_PACKET_SIZE)) < 0)
3499 ✗ return ret;
3500 ✗ ret = read_packet(s, pkt->data, ts->raw_packet_size, &data);
3501 ✗ pkt->pos = avio_tell(s->pb);
3502 ✗ if (ret < 0) {
3503 ✗ return ret;
3504 }
3505 ✗ if (data != pkt->data)
3506 ✗ memcpy(pkt->data, data, TS_PACKET_SIZE);
3507 ✗ finished_reading_packet(s, ts->raw_packet_size);
3508 ✗ if (ts->mpeg2ts_compute_pcr) {
3509 /* compute exact PCR for each packet */
3510 ✗ if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
3511 /* we read the next PCR (XXX: optimize it by using a bigger buffer */
3512 ✗ pos = avio_tell(s->pb);
3513 ✗ for (i = 0; i < MAX_PACKET_READAHEAD; i++) {
3514 ✗ avio_seek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
3515 ✗ avio_read(s->pb, pcr_buf, 12);
3516 ✗ if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
3517 /* XXX: not precise enough */
3518 ✗ ts->pcr_incr =
3519 ✗ ((next_pcr_h - pcr_h) * SYSTEM_CLOCK_FREQUENCY_DIVISOR + (next_pcr_l - pcr_l)) /
3520 ✗ (i + 1);
3521 ✗ break;
3522 }
3523 }
3524 ✗ avio_seek(s->pb, pos, SEEK_SET);
3525 /* no next PCR found: we use previous increment */
3526 ✗ ts->cur_pcr = pcr_h * SYSTEM_CLOCK_FREQUENCY_DIVISOR + pcr_l;
3527 }
3528 ✗ pkt->pts = ts->cur_pcr;
3529 ✗ pkt->duration = ts->pcr_incr;
3530 ✗ ts->cur_pcr += ts->pcr_incr;
3531 }
3532 ✗ pkt->stream_index = 0;
3533 ✗ return 0;
3534 }
3535
3536 34655 static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt)
3537 {
3538 34655 MpegTSContext *ts = s->priv_data;
3539 int ret, i;
3540
3541 34655 pkt->size = -1;
3542 34655 ts->pkt = pkt;
3543 34655 ret = handle_packets(ts, 0);
3544
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 34655 if (ret < 0) {
3545 499 av_packet_unref(ts->pkt);
3546 /* flush pes data left */
3547
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3548
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 2846022 if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
3549 1026 PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
3550
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 1026 if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
3551 215 ret = new_pes_packet(pes, pkt);
3552
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 215 if (ret < 0)
3553 ✗ return ret;
3554 215 pes->state = MPEGTS_SKIP;
3555 215 ret = 0;
3556 215 break;
3557 }
3558 }
3559 }
3560
3561
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 34655 if (!ret && pkt->size < 0)
3562 ✗ ret = AVERROR_INVALIDDATA;
3563 34655 return ret;
3564 }
3565
3566 76 static void mpegts_free(MpegTSContext *ts)
3567 {
3568 int i;
3569
3570 76 clear_programs(ts);
3571
3572
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 2508 for (i = 0; i < FF_ARRAY_ELEMS(ts->pools); i++)
3573 2432 av_buffer_pool_uninit(&ts->pools[i]);
3574
3575
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3576
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 622592 if (ts->pids[i])
3577 465 mpegts_close_filter(ts, ts->pids[i]);
3578 76 }
3579
3580 76 static int mpegts_read_close(AVFormatContext *s)
3581 {
3582 76 MpegTSContext *ts = s->priv_data;
3583 76 mpegts_free(ts);
3584 76 return 0;
3585 }
3586
3587 ✗ av_unused static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
3588 int64_t *ppos, int64_t pos_limit)
3589 {
3590 ✗ MpegTSContext *ts = s->priv_data;
3591 int64_t pos, timestamp;
3592 uint8_t buf[TS_PACKET_SIZE];
3593 ✗ int pcr_l, pcr_pid =
3594 ✗ ((PESContext *)s->streams[stream_index]->priv_data)->pcr_pid;
3595 ✗ int pos47 = ts->pos47_full % ts->raw_packet_size;
3596 ✗ pos =
3597 ✗ ((*ppos + ts->raw_packet_size - 1 - pos47) / ts->raw_packet_size) *
3598 ✗ ts->raw_packet_size + pos47;
3599 ✗ while(pos < pos_limit) {
3600 ✗ if (avio_seek(s->pb, pos, SEEK_SET) < 0)
3601 ✗ return AV_NOPTS_VALUE;
3602 ✗ if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
3603 ✗ return AV_NOPTS_VALUE;
3604 ✗ if (buf[0] != SYNC_BYTE) {
3605 ✗ if (mpegts_resync(s, TS_PACKET_SIZE, buf) < 0)
3606 ✗ return AV_NOPTS_VALUE;
3607 ✗ pos = avio_tell(s->pb);
3608 ✗ continue;
3609 }
3610 ✗ if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
3611 ✗ parse_pcr(&timestamp, &pcr_l, buf) == 0) {
3612 ✗ *ppos = pos;
3613 ✗ return timestamp;
3614 }
3615 ✗ pos += ts->raw_packet_size;
3616 }
3617
3618 ✗ return AV_NOPTS_VALUE;
3619 }
3620
3621 90 static int64_t mpegts_get_dts(AVFormatContext *s, int stream_index,
3622 int64_t *ppos, int64_t pos_limit)
3623 {
3624 90 MpegTSContext *ts = s->priv_data;
3625 AVPacket *pkt;
3626 int64_t pos;
3627 90 int pos47 = ts->pos47_full % ts->raw_packet_size;
3628 90 pos = ((*ppos + ts->raw_packet_size - 1 - pos47) / ts->raw_packet_size) * ts->raw_packet_size + pos47;
3629 90 ff_read_frame_flush(s);
3630
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 90 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
3631 ✗ return AV_NOPTS_VALUE;
3632 90 pkt = av_packet_alloc();
3633
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 90 if (!pkt)
3634 ✗ return AV_NOPTS_VALUE;
3635
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 496 while(pos < pos_limit) {
3636 484 int ret = av_read_frame(s, pkt);
3637
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 484 if (ret < 0) {
3638 18 av_packet_free(&pkt);
3639 18 return AV_NOPTS_VALUE;
3640 }
3641
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 466 if (pkt->dts != AV_NOPTS_VALUE && pkt->pos >= 0) {
3642 163 ff_reduce_index(s, pkt->stream_index);
3643 163 av_add_index_entry(s->streams[pkt->stream_index], pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME /* FIXME keyframe? */);
3644
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 163 if (pkt->stream_index == stream_index && pkt->pos >= *ppos) {
3645 60 int64_t dts = pkt->dts;
3646 60 *ppos = pkt->pos;
3647 60 av_packet_free(&pkt);
3648 60 return dts;
3649 }
3650 }
3651 406 pos = pkt->pos;
3652 406 av_packet_unref(pkt);
3653 }
3654
3655 12 av_packet_free(&pkt);
3656 12 return AV_NOPTS_VALUE;
3657 }
3658
3659 /**************************************************************/
3660 /* parsing functions - called from other demuxers such as RTP */
3661
3662 ✗ MpegTSContext *avpriv_mpegts_parse_open(AVFormatContext *s)
3663 {
3664 MpegTSContext *ts;
3665
3666 ✗ ts = av_mallocz(sizeof(MpegTSContext));
3667 ✗ if (!ts)
3668 ✗ return NULL;
3669 /* no stream case, currently used by RTP */
3670 ✗ ts->raw_packet_size = TS_PACKET_SIZE;
3671 ✗ ts->max_packet_size = 2048000;
3672 ✗ ts->stream = s;
3673 ✗ ts->auto_guess = 1;
3674
3675 ✗ mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
3676 ✗ mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
3677 ✗ mpegts_open_section_filter(ts, EIT_PID, eit_cb, ts, 1);
3678
3679 ✗ return ts;
3680 }
3681
3682 /* return the consumed length if a packet was output, or -1 if no
3683 * packet is output */
3684 ✗ int avpriv_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
3685 const uint8_t *buf, int len)
3686 {
3687 int len1;
3688
3689 ✗ len1 = len;
3690 ✗ ts->pkt = pkt;
3691 for (;;) {
3692 ✗ ts->stop_parse = 0;
3693 ✗ if (len < TS_PACKET_SIZE)
3694 ✗ return AVERROR_INVALIDDATA;
3695 ✗ if (buf[0] != SYNC_BYTE) {
3696 ✗ buf++;
3697 ✗ len--;
3698 } else {
3699 ✗ handle_packet(ts, buf, len1 - len + TS_PACKET_SIZE);
3700 ✗ buf += TS_PACKET_SIZE;
3701 ✗ len -= TS_PACKET_SIZE;
3702 ✗ if (ts->stop_parse == 1)
3703 ✗ break;
3704 }
3705 }
3706 ✗ return len1 - len;
3707 }
3708
3709 ✗ void avpriv_mpegts_parse_close(MpegTSContext *ts)
3710 {
3711 ✗ mpegts_free(ts);
3712 ✗ av_free(ts);
3713 ✗ }
3714
3715 const FFInputFormat ff_mpegts_demuxer = {
3716 .p.name = "mpegts",
3717 .p.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
3718 .p.flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
3719 .p.priv_class = &mpegts_class,
3720 .priv_data_size = sizeof(MpegTSContext),
3721 .read_probe = mpegts_probe,
3722 .read_header = mpegts_read_header,
3723 .read_packet = mpegts_read_packet,
3724 .read_close = mpegts_read_close,
3725 .read_timestamp = mpegts_get_dts,
3726 .flags_internal = FF_INFMT_FLAG_PREFER_CODEC_FRAMERATE,
3727 };
3728
3729 const FFInputFormat ff_mpegtsraw_demuxer = {
3730 .p.name = "mpegtsraw",
3731 .p.long_name = NULL_IF_CONFIG_SMALL("raw MPEG-TS (MPEG-2 Transport Stream)"),
3732 .p.flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
3733 .p.priv_class = &mpegtsraw_class,
3734 .priv_data_size = sizeof(MpegTSContext),
3735 .read_header = mpegts_read_header,
3736 .read_packet = mpegts_raw_read_packet,
3737 .read_close = mpegts_read_close,
3738 .read_timestamp = mpegts_get_dts,
3739 .flags_internal = FF_INFMT_FLAG_PREFER_CODEC_FRAMERATE,
3740 };
3741