double free patch by (Måns Rullgård <mru inprovide com>)
[libav.git] / libavformat / mpegtsenc.c
1 /*
2 * MPEG2 transport stream (aka DVB) mux
3 * Copyright (c) 2003 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19 #include "avformat.h"
20
21 #include "mpegts.h"
22
23 /* write DVB SI sections */
24
25 static const uint32_t crc_table[256] = {
26 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
27 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
28 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
29 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
30 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
31 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
32 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
33 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
34 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
35 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
36 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
37 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
38 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
39 0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
40 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
41 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
42 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
43 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
44 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
45 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
46 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
47 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
48 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
49 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
50 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
51 0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
52 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
53 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
54 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
55 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
56 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
57 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
58 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
59 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
60 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
61 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
62 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
63 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
64 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
65 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
66 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
67 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
68 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
69 };
70
71 unsigned int mpegts_crc32(const uint8_t *data, int len)
72 {
73 register int i;
74 unsigned int crc = 0xffffffff;
75
76 for (i=0; i<len; i++)
77 crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *data++) & 0xff];
78
79 return crc;
80 }
81
82 /*********************************************/
83 /* mpegts section writer */
84
85 typedef struct MpegTSSection {
86 int pid;
87 int cc;
88 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
89 void *opaque;
90 } MpegTSSection;
91
92 /* NOTE: 4 bytes must be left at the end for the crc32 */
93 void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
94 {
95 unsigned int crc;
96 unsigned char packet[TS_PACKET_SIZE];
97 const unsigned char *buf_ptr;
98 unsigned char *q;
99 int first, b, len1, left;
100
101 crc = mpegts_crc32(buf, len - 4);
102 buf[len - 4] = (crc >> 24) & 0xff;
103 buf[len - 3] = (crc >> 16) & 0xff;
104 buf[len - 2] = (crc >> 8) & 0xff;
105 buf[len - 1] = (crc) & 0xff;
106
107 /* send each packet */
108 buf_ptr = buf;
109 while (len > 0) {
110 first = (buf == buf_ptr);
111 q = packet;
112 *q++ = 0x47;
113 b = (s->pid >> 8);
114 if (first)
115 b |= 0x40;
116 *q++ = b;
117 *q++ = s->pid;
118 s->cc = (s->cc + 1) & 0xf;
119 *q++ = 0x10 | s->cc;
120 if (first)
121 *q++ = 0; /* 0 offset */
122 len1 = TS_PACKET_SIZE - (q - packet);
123 if (len1 > len)
124 len1 = len;
125 memcpy(q, buf_ptr, len1);
126 q += len1;
127 /* add known padding data */
128 left = TS_PACKET_SIZE - (q - packet);
129 if (left > 0)
130 memset(q, 0xff, left);
131
132 s->write_packet(s, packet);
133
134 buf_ptr += len1;
135 len -= len1;
136 }
137 }
138
139 static inline void put16(uint8_t **q_ptr, int val)
140 {
141 uint8_t *q;
142 q = *q_ptr;
143 *q++ = val >> 8;
144 *q++ = val;
145 *q_ptr = q;
146 }
147
148 int mpegts_write_section1(MpegTSSection *s, int tid, int id,
149 int version, int sec_num, int last_sec_num,
150 uint8_t *buf, int len)
151 {
152 uint8_t section[1024], *q;
153 unsigned int tot_len;
154
155 tot_len = 3 + 5 + len + 4;
156 /* check if not too big */
157 if (tot_len > 1024)
158 return -1;
159
160 q = section;
161 *q++ = tid;
162 put16(&q, 0xb000 | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
163 put16(&q, id);
164 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
165 *q++ = sec_num;
166 *q++ = last_sec_num;
167 memcpy(q, buf, len);
168
169 mpegts_write_section(s, section, tot_len);
170 return 0;
171 }
172
173 /*********************************************/
174 /* mpegts writer */
175
176 #define DEFAULT_PMT_START_PID 0x1000
177 #define DEFAULT_START_PID 0x0100
178 #define DEFAULT_PROVIDER_NAME "FFmpeg"
179 #define DEFAULT_SERVICE_NAME "Service01"
180
181 /* default network id, transport stream and service identifiers */
182 #define DEFAULT_ONID 0x0001
183 #define DEFAULT_TSID 0x0001
184 #define DEFAULT_SID 0x0001
185
186 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
187 #define DEFAULT_PES_HEADER_FREQ 16
188 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
189
190 /* we retransmit the SI info at this rate */
191 #define SDT_RETRANS_TIME 500
192 #define PAT_RETRANS_TIME 100
193
194 typedef struct MpegTSWriteStream {
195 int pid; /* stream associated pid */
196 int cc;
197 int payload_index;
198 int64_t payload_pts;
199 uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE];
200 } MpegTSWriteStream;
201
202 typedef struct MpegTSService {
203 MpegTSSection pmt; /* MPEG2 pmt table context */
204 int pcr_pid;
205 int sid; /* service ID */
206 char *name;
207 char *provider_name;
208 } MpegTSService;
209
210 typedef struct MpegTSWrite {
211 MpegTSSection pat; /* MPEG2 pat table */
212 MpegTSSection sdt; /* MPEG2 sdt table context */
213 MpegTSService **services;
214 int sdt_packet_count;
215 int sdt_packet_freq;
216 int pat_packet_count;
217 int pat_packet_freq;
218 int nb_services;
219 int onid;
220 int tsid;
221 } MpegTSWrite;
222
223 static void mpegts_write_pat(AVFormatContext *s)
224 {
225 MpegTSWrite *ts = s->priv_data;
226 MpegTSService *service;
227 uint8_t data[1012], *q;
228 int i;
229
230 q = data;
231 for(i = 0; i < ts->nb_services; i++) {
232 service = ts->services[i];
233 put16(&q, service->sid);
234 put16(&q, 0xe000 | service->pmt.pid);
235 }
236 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, 0, 0, 0,
237 data, q - data);
238 }
239
240 static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
241 {
242 // MpegTSWrite *ts = s->priv_data;
243 uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr;
244 int val, stream_type, i;
245
246 q = data;
247 put16(&q, 0xe000 | service->pcr_pid);
248
249 program_info_length_ptr = q;
250 q += 2; /* patched after */
251
252 /* put program info here */
253
254 val = 0xf000 | (q - program_info_length_ptr - 2);
255 program_info_length_ptr[0] = val >> 8;
256 program_info_length_ptr[1] = val;
257
258 for(i = 0; i < s->nb_streams; i++) {
259 AVStream *st = s->streams[i];
260 MpegTSWriteStream *ts_st = st->priv_data;
261 switch(st->codec.codec_id) {
262 case CODEC_ID_MPEG1VIDEO:
263 case CODEC_ID_MPEG2VIDEO:
264 stream_type = STREAM_TYPE_VIDEO_MPEG2;
265 break;
266 case CODEC_ID_MPEG4:
267 stream_type = STREAM_TYPE_VIDEO_MPEG4;
268 break;
269 case CODEC_ID_H264:
270 stream_type = STREAM_TYPE_VIDEO_H264;
271 break;
272 case CODEC_ID_MP2:
273 case CODEC_ID_MP3:
274 stream_type = STREAM_TYPE_AUDIO_MPEG1;
275 break;
276 case CODEC_ID_AAC:
277 stream_type = STREAM_TYPE_AUDIO_AAC;
278 break;
279 case CODEC_ID_AC3:
280 stream_type = STREAM_TYPE_AUDIO_AC3;
281 break;
282 default:
283 stream_type = STREAM_TYPE_PRIVATE_DATA;
284 break;
285 }
286 *q++ = stream_type;
287 put16(&q, 0xe000 | ts_st->pid);
288 desc_length_ptr = q;
289 q += 2; /* patched after */
290
291 /* write optional descriptors here */
292
293 val = 0xf000 | (q - desc_length_ptr - 2);
294 desc_length_ptr[0] = val >> 8;
295 desc_length_ptr[1] = val;
296 }
297 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, 0, 0, 0,
298 data, q - data);
299 }
300
301 /* NOTE: str == NULL is accepted for an empty string */
302 static void putstr8(uint8_t **q_ptr, const char *str)
303 {
304 uint8_t *q;
305 int len;
306
307 q = *q_ptr;
308 if (!str)
309 len = 0;
310 else
311 len = strlen(str);
312 *q++ = len;
313 memcpy(q, str, len);
314 q += len;
315 *q_ptr = q;
316 }
317
318 static void mpegts_write_sdt(AVFormatContext *s)
319 {
320 MpegTSWrite *ts = s->priv_data;
321 MpegTSService *service;
322 uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr;
323 int i, running_status, free_ca_mode, val;
324
325 q = data;
326 put16(&q, ts->onid);
327 *q++ = 0xff;
328 for(i = 0; i < ts->nb_services; i++) {
329 service = ts->services[i];
330 put16(&q, service->sid);
331 *q++ = 0xfc | 0x00; /* currently no EIT info */
332 desc_list_len_ptr = q;
333 q += 2;
334 running_status = 4; /* running */
335 free_ca_mode = 0;
336
337 /* write only one descriptor for the service name and provider */
338 *q++ = 0x48;
339 desc_len_ptr = q;
340 q++;
341 *q++ = 0x01; /* digital television service */
342 putstr8(&q, service->provider_name);
343 putstr8(&q, service->name);
344 desc_len_ptr[0] = q - desc_len_ptr - 1;
345
346 /* fill descriptor length */
347 val = (running_status << 13) | (free_ca_mode << 12) |
348 (q - desc_list_len_ptr - 2);
349 desc_list_len_ptr[0] = val >> 8;
350 desc_list_len_ptr[1] = val;
351 }
352 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, 0, 0, 0,
353 data, q - data);
354 }
355
356 static MpegTSService *mpegts_add_service(MpegTSWrite *ts,
357 int sid,
358 const char *provider_name,
359 const char *name)
360 {
361 MpegTSService *service;
362
363 service = av_mallocz(sizeof(MpegTSService));
364 if (!service)
365 return NULL;
366 service->pmt.pid = DEFAULT_PMT_START_PID + ts->nb_services - 1;
367 service->sid = sid;
368 service->provider_name = av_strdup(provider_name);
369 service->name = av_strdup(name);
370 service->pcr_pid = 0x1fff;
371 dynarray_add(&ts->services, &ts->nb_services, service);
372 return service;
373 }
374
375 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
376 {
377 AVFormatContext *ctx = s->opaque;
378 put_buffer(&ctx->pb, packet, TS_PACKET_SIZE);
379 }
380
381 static int mpegts_write_header(AVFormatContext *s)
382 {
383 MpegTSWrite *ts = s->priv_data;
384 MpegTSWriteStream *ts_st;
385 MpegTSService *service;
386 AVStream *st;
387 int i, total_bit_rate;
388
389 ts->tsid = DEFAULT_TSID;
390 ts->onid = DEFAULT_ONID;
391 /* allocate a single DVB service */
392 service = mpegts_add_service(ts, DEFAULT_SID,
393 DEFAULT_PROVIDER_NAME, DEFAULT_SERVICE_NAME);
394 service->pmt.write_packet = section_write_packet;
395 service->pmt.opaque = s;
396
397 ts->pat.pid = PAT_PID;
398 ts->pat.cc = 0;
399 ts->pat.write_packet = section_write_packet;
400 ts->pat.opaque = s;
401
402 ts->sdt.pid = SDT_PID;
403 ts->sdt.cc = 0;
404 ts->sdt.write_packet = section_write_packet;
405 ts->sdt.opaque = s;
406
407 /* assign pids to each stream */
408 total_bit_rate = 0;
409 for(i = 0;i < s->nb_streams; i++) {
410 st = s->streams[i];
411 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
412 if (!ts_st)
413 goto fail;
414 st->priv_data = ts_st;
415 ts_st->pid = DEFAULT_START_PID + i;
416 ts_st->payload_pts = AV_NOPTS_VALUE;
417 /* update PCR pid if needed */
418 if (st->codec.codec_type == CODEC_TYPE_VIDEO &&
419 service->pcr_pid == 0x1fff)
420 service->pcr_pid = ts_st->pid;
421 total_bit_rate += st->codec.bit_rate;
422 }
423 if (total_bit_rate <= 8 * 1024)
424 total_bit_rate = 8 * 1024;
425 ts->sdt_packet_freq = (total_bit_rate * SDT_RETRANS_TIME) /
426 (TS_PACKET_SIZE * 8 * 1000);
427 ts->pat_packet_freq = (total_bit_rate * PAT_RETRANS_TIME) /
428 (TS_PACKET_SIZE * 8 * 1000);
429 #if 0
430 printf("%d %d %d\n",
431 total_bit_rate, ts->sdt_packet_freq, ts->pat_packet_freq);
432 #endif
433
434 /* write info at the start of the file, so that it will be fast to
435 find them */
436 mpegts_write_sdt(s);
437 mpegts_write_pat(s);
438 for(i = 0; i < ts->nb_services; i++) {
439 mpegts_write_pmt(s, ts->services[i]);
440 }
441 put_flush_packet(&s->pb);
442
443 return 0;
444
445 fail:
446 for(i = 0;i < s->nb_streams; i++) {
447 st = s->streams[i];
448 av_free(st->priv_data);
449 }
450 return -1;
451 }
452
453 /* send SDT, PAT and PMT tables regulary */
454 static void retransmit_si_info(AVFormatContext *s)
455 {
456 MpegTSWrite *ts = s->priv_data;
457 int i;
458
459 if (++ts->sdt_packet_count == ts->sdt_packet_freq) {
460 ts->sdt_packet_count = 0;
461 mpegts_write_sdt(s);
462 }
463 if (++ts->pat_packet_count == ts->pat_packet_freq) {
464 ts->pat_packet_count = 0;
465 mpegts_write_pat(s);
466 for(i = 0; i < ts->nb_services; i++) {
467 mpegts_write_pmt(s, ts->services[i]);
468 }
469 }
470 }
471
472 /* NOTE: pes_data contains all the PES packet */
473 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
474 const uint8_t *payload, int payload_size,
475 int64_t pts)
476 {
477 MpegTSWriteStream *ts_st = st->priv_data;
478 uint8_t buf[TS_PACKET_SIZE];
479 uint8_t *q;
480 int val, is_start, len, ts_len, header_len;
481
482 is_start = 1;
483 while (payload_size > 0) {
484 retransmit_si_info(s);
485
486 /* prepare packet header */
487 q = buf;
488 *q++ = 0x47;
489 val = (ts_st->pid >> 8);
490 if (is_start)
491 val |= 0x40;
492 *q++ = val;
493 *q++ = ts_st->pid;
494 *q++ = 0x10 | ts_st->cc;
495 ts_st->cc = (ts_st->cc + 1) & 0xf;
496 if (is_start) {
497 /* write PES header */
498 *q++ = 0x00;
499 *q++ = 0x00;
500 *q++ = 0x01;
501 if (st->codec.codec_type == CODEC_TYPE_VIDEO)
502 *q++ = 0xe0;
503 else
504 *q++ = 0xc0;
505 if (pts != AV_NOPTS_VALUE)
506 header_len = 8;
507 else
508 header_len = 3;
509 len = payload_size + header_len;
510 *q++ = len >> 8;
511 *q++ = len;
512 *q++ = 0x80;
513 if (pts != AV_NOPTS_VALUE) {
514 *q++ = 0x80; /* PTS only */
515 *q++ = 0x05; /* header len */
516 val = (0x02 << 4) |
517 (((pts >> 30) & 0x07) << 1) | 1;
518 *q++ = val;
519 val = (((pts >> 15) & 0x7fff) << 1) | 1;
520 *q++ = val >> 8;
521 *q++ = val;
522 val = (((pts) & 0x7fff) << 1) | 1;
523 *q++ = val >> 8;
524 *q++ = val;
525 } else {
526 *q++ = 0x00;
527 *q++ = 0x00;
528 }
529 is_start = 0;
530 }
531 /* write header */
532 ts_len = q - buf;
533 put_buffer(&s->pb, buf, ts_len);
534 /* write data */
535 len = TS_PACKET_SIZE - ts_len;
536 if (len > payload_size)
537 len = payload_size;
538 put_buffer(&s->pb, payload, len);
539 payload += len;
540 payload_size -= len;
541 ts_len += len;
542 /* stuffing */
543 len = TS_PACKET_SIZE - ts_len;
544 if (len > 0) {
545 memset(buf, 0xff, len);
546 put_buffer(&s->pb, buf, len);
547 }
548 }
549 put_flush_packet(&s->pb);
550 }
551
552 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
553 {
554 AVStream *st = s->streams[pkt->stream_index];
555 int size= pkt->size;
556 uint8_t *buf= pkt->data;
557 MpegTSWriteStream *ts_st = st->priv_data;
558 int len;
559
560 while (size > 0) {
561 len = DEFAULT_PES_PAYLOAD_SIZE - ts_st->payload_index;
562 if (len > size)
563 len = size;
564 memcpy(ts_st->payload + ts_st->payload_index, buf, len);
565 buf += len;
566 size -= len;
567 ts_st->payload_index += len;
568 if (ts_st->payload_pts == AV_NOPTS_VALUE)
569 ts_st->payload_pts = pkt->pts;
570 if (ts_st->payload_index >= DEFAULT_PES_PAYLOAD_SIZE) {
571 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
572 ts_st->payload_pts);
573 ts_st->payload_pts = AV_NOPTS_VALUE;
574 ts_st->payload_index = 0;
575 }
576 }
577 return 0;
578 }
579
580 static int mpegts_write_end(AVFormatContext *s)
581 {
582 MpegTSWrite *ts = s->priv_data;
583 MpegTSWriteStream *ts_st;
584 MpegTSService *service;
585 AVStream *st;
586 int i;
587
588 /* flush current packets */
589 for(i = 0; i < s->nb_streams; i++) {
590 st = s->streams[i];
591 ts_st = st->priv_data;
592 if (ts_st->payload_index > 0) {
593 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
594 ts_st->payload_pts);
595 }
596 }
597 put_flush_packet(&s->pb);
598
599 for(i = 0; i < ts->nb_services; i++) {
600 service = ts->services[i];
601 av_freep(&service->provider_name);
602 av_freep(&service->name);
603 av_free(service);
604 }
605 av_free(ts->services);
606
607 return 0;
608 }
609
610 AVOutputFormat mpegts_mux = {
611 "mpegts",
612 "MPEG2 transport stream format",
613 "video/x-mpegts",
614 "ts",
615 sizeof(MpegTSWrite),
616 CODEC_ID_MP2,
617 CODEC_ID_MPEG2VIDEO,
618 mpegts_write_header,
619 mpegts_write_packet,
620 mpegts_write_end,
621 };