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ffmpeg / libavformat / mpegtsenc.c @ 80a289b9

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1
/*
2
 * MPEG2 transport stream (aka DVB) muxer
3
 * Copyright (c) 2003 Fabrice Bellard.
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
#include "avformat.h"
22
#include "crc.h"
23
#include "mpegts.h"
24

    
25
/* write DVB SI sections */
26

    
27
/*********************************************/
28
/* mpegts section writer */
29

    
30
typedef struct MpegTSSection {
31
    int pid;
32
    int cc;
33
    void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
34
    void *opaque;
35
} MpegTSSection;
36

    
37
/* NOTE: 4 bytes must be left at the end for the crc32 */
38
static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
39
{
40
    unsigned int crc;
41
    unsigned char packet[TS_PACKET_SIZE];
42
    const unsigned char *buf_ptr;
43
    unsigned char *q;
44
    int first, b, len1, left;
45

    
46
    crc = bswap_32(av_crc(av_crc04C11DB7, -1, buf, len - 4));
47
    buf[len - 4] = (crc >> 24) & 0xff;
48
    buf[len - 3] = (crc >> 16) & 0xff;
49
    buf[len - 2] = (crc >> 8) & 0xff;
50
    buf[len - 1] = (crc) & 0xff;
51

    
52
    /* send each packet */
53
    buf_ptr = buf;
54
    while (len > 0) {
55
        first = (buf == buf_ptr);
56
        q = packet;
57
        *q++ = 0x47;
58
        b = (s->pid >> 8);
59
        if (first)
60
            b |= 0x40;
61
        *q++ = b;
62
        *q++ = s->pid;
63
        s->cc = (s->cc + 1) & 0xf;
64
        *q++ = 0x10 | s->cc;
65
        if (first)
66
            *q++ = 0; /* 0 offset */
67
        len1 = TS_PACKET_SIZE - (q - packet);
68
        if (len1 > len)
69
            len1 = len;
70
        memcpy(q, buf_ptr, len1);
71
        q += len1;
72
        /* add known padding data */
73
        left = TS_PACKET_SIZE - (q - packet);
74
        if (left > 0)
75
            memset(q, 0xff, left);
76

    
77
        s->write_packet(s, packet);
78

    
79
        buf_ptr += len1;
80
        len -= len1;
81
    }
82
}
83

    
84
static inline void put16(uint8_t **q_ptr, int val)
85
{
86
    uint8_t *q;
87
    q = *q_ptr;
88
    *q++ = val >> 8;
89
    *q++ = val;
90
    *q_ptr = q;
91
}
92

    
93
static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
94
                          int version, int sec_num, int last_sec_num,
95
                          uint8_t *buf, int len)
96
{
97
    uint8_t section[1024], *q;
98
    unsigned int tot_len;
99

    
100
    tot_len = 3 + 5 + len + 4;
101
    /* check if not too big */
102
    if (tot_len > 1024)
103
        return -1;
104

    
105
    q = section;
106
    *q++ = tid;
107
    put16(&q, 0xb000 | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
108
    put16(&q, id);
109
    *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
110
    *q++ = sec_num;
111
    *q++ = last_sec_num;
112
    memcpy(q, buf, len);
113

    
114
    mpegts_write_section(s, section, tot_len);
115
    return 0;
116
}
117

    
118
/*********************************************/
119
/* mpegts writer */
120

    
121
#define DEFAULT_PMT_START_PID   0x1000
122
#define DEFAULT_START_PID       0x0100
123
#define DEFAULT_PROVIDER_NAME   "FFmpeg"
124
#define DEFAULT_SERVICE_NAME    "Service01"
125

    
126
/* default network id, transport stream and service identifiers */
127
#define DEFAULT_ONID            0x0001
128
#define DEFAULT_TSID            0x0001
129
#define DEFAULT_SID             0x0001
130

    
131
/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
132
#define DEFAULT_PES_HEADER_FREQ 16
133
#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
134

    
135
/* we retransmit the SI info at this rate */
136
#define SDT_RETRANS_TIME 500
137
#define PAT_RETRANS_TIME 100
138
#define PCR_RETRANS_TIME 20
139

    
140
typedef struct MpegTSWriteStream {
141
    struct MpegTSService *service;
142
    int pid; /* stream associated pid */
143
    int cc;
144
    int payload_index;
145
    int64_t payload_pts;
146
    uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE];
147
} MpegTSWriteStream;
148

    
149
typedef struct MpegTSService {
150
    MpegTSSection pmt; /* MPEG2 pmt table context */
151
    int sid;           /* service ID */
152
    char *name;
153
    char *provider_name;
154
    int pcr_pid;
155
    int pcr_packet_count;
156
    int pcr_packet_freq;
157
} MpegTSService;
158

    
159
typedef struct MpegTSWrite {
160
    MpegTSSection pat; /* MPEG2 pat table */
161
    MpegTSSection sdt; /* MPEG2 sdt table context */
162
    MpegTSService **services;
163
    int sdt_packet_count;
164
    int sdt_packet_freq;
165
    int pat_packet_count;
166
    int pat_packet_freq;
167
    int nb_services;
168
    int onid;
169
    int tsid;
170
} MpegTSWrite;
171

    
172
static void mpegts_write_pat(AVFormatContext *s)
173
{
174
    MpegTSWrite *ts = s->priv_data;
175
    MpegTSService *service;
176
    uint8_t data[1012], *q;
177
    int i;
178

    
179
    q = data;
180
    for(i = 0; i < ts->nb_services; i++) {
181
        service = ts->services[i];
182
        put16(&q, service->sid);
183
        put16(&q, 0xe000 | service->pmt.pid);
184
    }
185
    mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, 0, 0, 0,
186
                          data, q - data);
187
}
188

    
189
static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
190
{
191
    //    MpegTSWrite *ts = s->priv_data;
192
    uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr;
193
    int val, stream_type, i;
194

    
195
    q = data;
196
    put16(&q, 0xe000 | service->pcr_pid);
197

    
198
    program_info_length_ptr = q;
199
    q += 2; /* patched after */
200

    
201
    /* put program info here */
202

    
203
    val = 0xf000 | (q - program_info_length_ptr - 2);
204
    program_info_length_ptr[0] = val >> 8;
205
    program_info_length_ptr[1] = val;
206

    
207
    for(i = 0; i < s->nb_streams; i++) {
208
        AVStream *st = s->streams[i];
209
        MpegTSWriteStream *ts_st = st->priv_data;
210
        switch(st->codec->codec_id) {
211
        case CODEC_ID_MPEG1VIDEO:
212
        case CODEC_ID_MPEG2VIDEO:
213
            stream_type = STREAM_TYPE_VIDEO_MPEG2;
214
            break;
215
        case CODEC_ID_MPEG4:
216
            stream_type = STREAM_TYPE_VIDEO_MPEG4;
217
            break;
218
        case CODEC_ID_H264:
219
            stream_type = STREAM_TYPE_VIDEO_H264;
220
            break;
221
        case CODEC_ID_MP2:
222
        case CODEC_ID_MP3:
223
            stream_type = STREAM_TYPE_AUDIO_MPEG1;
224
            break;
225
        case CODEC_ID_AAC:
226
            stream_type = STREAM_TYPE_AUDIO_AAC;
227
            break;
228
        case CODEC_ID_AC3:
229
            stream_type = STREAM_TYPE_AUDIO_AC3;
230
            break;
231
        default:
232
            stream_type = STREAM_TYPE_PRIVATE_DATA;
233
            break;
234
        }
235
        *q++ = stream_type;
236
        put16(&q, 0xe000 | ts_st->pid);
237
        desc_length_ptr = q;
238
        q += 2; /* patched after */
239

    
240
        /* write optional descriptors here */
241
        switch(st->codec->codec_type) {
242
        case CODEC_TYPE_AUDIO:
243
            if (strlen(st->language) == 3) {
244
                *q++ = 0x0a; /* ISO 639 language descriptor */
245
                *q++ = 4;
246
                *q++ = st->language[0];
247
                *q++ = st->language[1];
248
                *q++ = st->language[2];
249
                *q++ = 0; /* undefined type */
250
            }
251
            break;
252
        case CODEC_TYPE_SUBTITLE:
253
            {
254
                const char *language;
255
                language = st->language;
256
                if (strlen(language) != 3)
257
                    language = "eng";
258
                *q++ = 0x59;
259
                *q++ = 8;
260
                *q++ = language[0];
261
                *q++ = language[1];
262
                *q++ = language[2];
263
                *q++ = 0x10; /* normal subtitles (0x20 = if hearing pb) */
264
                put16(&q, 1); /* page id */
265
                put16(&q, 1); /* ancillary page id */
266
            }
267
            break;
268
        }
269

    
270
        val = 0xf000 | (q - desc_length_ptr - 2);
271
        desc_length_ptr[0] = val >> 8;
272
        desc_length_ptr[1] = val;
273
    }
274
    mpegts_write_section1(&service->pmt, PMT_TID, service->sid, 0, 0, 0,
275
                          data, q - data);
276
}
277

    
278
/* NOTE: str == NULL is accepted for an empty string */
279
static void putstr8(uint8_t **q_ptr, const char *str)
280
{
281
    uint8_t *q;
282
    int len;
283

    
284
    q = *q_ptr;
285
    if (!str)
286
        len = 0;
287
    else
288
        len = strlen(str);
289
    *q++ = len;
290
    memcpy(q, str, len);
291
    q += len;
292
    *q_ptr = q;
293
}
294

    
295
static void mpegts_write_sdt(AVFormatContext *s)
296
{
297
    MpegTSWrite *ts = s->priv_data;
298
    MpegTSService *service;
299
    uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr;
300
    int i, running_status, free_ca_mode, val;
301

    
302
    q = data;
303
    put16(&q, ts->onid);
304
    *q++ = 0xff;
305
    for(i = 0; i < ts->nb_services; i++) {
306
        service = ts->services[i];
307
        put16(&q, service->sid);
308
        *q++ = 0xfc | 0x00; /* currently no EIT info */
309
        desc_list_len_ptr = q;
310
        q += 2;
311
        running_status = 4; /* running */
312
        free_ca_mode = 0;
313

    
314
        /* write only one descriptor for the service name and provider */
315
        *q++ = 0x48;
316
        desc_len_ptr = q;
317
        q++;
318
        *q++ = 0x01; /* digital television service */
319
        putstr8(&q, service->provider_name);
320
        putstr8(&q, service->name);
321
        desc_len_ptr[0] = q - desc_len_ptr - 1;
322

    
323
        /* fill descriptor length */
324
        val = (running_status << 13) | (free_ca_mode << 12) |
325
            (q - desc_list_len_ptr - 2);
326
        desc_list_len_ptr[0] = val >> 8;
327
        desc_list_len_ptr[1] = val;
328
    }
329
    mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, 0, 0, 0,
330
                          data, q - data);
331
}
332

    
333
static MpegTSService *mpegts_add_service(MpegTSWrite *ts,
334
                                         int sid,
335
                                         const char *provider_name,
336
                                         const char *name)
337
{
338
    MpegTSService *service;
339

    
340
    service = av_mallocz(sizeof(MpegTSService));
341
    if (!service)
342
        return NULL;
343
    service->pmt.pid = DEFAULT_PMT_START_PID + ts->nb_services - 1;
344
    service->sid = sid;
345
    service->provider_name = av_strdup(provider_name);
346
    service->name = av_strdup(name);
347
    service->pcr_pid = 0x1fff;
348
    dynarray_add(&ts->services, &ts->nb_services, service);
349
    return service;
350
}
351

    
352
static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
353
{
354
    AVFormatContext *ctx = s->opaque;
355
    put_buffer(&ctx->pb, packet, TS_PACKET_SIZE);
356
}
357

    
358
static int mpegts_write_header(AVFormatContext *s)
359
{
360
    MpegTSWrite *ts = s->priv_data;
361
    MpegTSWriteStream *ts_st;
362
    MpegTSService *service;
363
    AVStream *st;
364
    int i, total_bit_rate;
365
    const char *service_name;
366

    
367
    ts->tsid = DEFAULT_TSID;
368
    ts->onid = DEFAULT_ONID;
369
    /* allocate a single DVB service */
370
    service_name = s->title;
371
    if (service_name[0] == '\0')
372
        service_name = DEFAULT_SERVICE_NAME;
373
    service = mpegts_add_service(ts, DEFAULT_SID,
374
                                 DEFAULT_PROVIDER_NAME, service_name);
375
    service->pmt.write_packet = section_write_packet;
376
    service->pmt.opaque = s;
377

    
378
    ts->pat.pid = PAT_PID;
379
    ts->pat.cc = 0;
380
    ts->pat.write_packet = section_write_packet;
381
    ts->pat.opaque = s;
382

    
383
    ts->sdt.pid = SDT_PID;
384
    ts->sdt.cc = 0;
385
    ts->sdt.write_packet = section_write_packet;
386
    ts->sdt.opaque = s;
387

    
388
    /* assign pids to each stream */
389
    total_bit_rate = 0;
390
    for(i = 0;i < s->nb_streams; i++) {
391
        st = s->streams[i];
392
        ts_st = av_mallocz(sizeof(MpegTSWriteStream));
393
        if (!ts_st)
394
            goto fail;
395
        st->priv_data = ts_st;
396
        ts_st->service = service;
397
        ts_st->pid = DEFAULT_START_PID + i;
398
        ts_st->payload_pts = AV_NOPTS_VALUE;
399
        /* update PCR pid by using the first video stream */
400
        if (st->codec->codec_type == CODEC_TYPE_VIDEO &&
401
            service->pcr_pid == 0x1fff)
402
            service->pcr_pid = ts_st->pid;
403
        total_bit_rate += st->codec->bit_rate;
404
    }
405

    
406
    /* if no video stream, use the first stream as PCR */
407
    if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
408
        ts_st = s->streams[0]->priv_data;
409
        service->pcr_pid = ts_st->pid;
410
    }
411

    
412
    if (total_bit_rate <= 8 * 1024)
413
        total_bit_rate = 8 * 1024;
414
    service->pcr_packet_freq = (total_bit_rate * PCR_RETRANS_TIME) /
415
        (TS_PACKET_SIZE * 8 * 1000);
416
    ts->sdt_packet_freq = (total_bit_rate * SDT_RETRANS_TIME) /
417
        (TS_PACKET_SIZE * 8 * 1000);
418
    ts->pat_packet_freq = (total_bit_rate * PAT_RETRANS_TIME) /
419
        (TS_PACKET_SIZE * 8 * 1000);
420
#if 0
421
    printf("%d %d %d\n",
422
           total_bit_rate, ts->sdt_packet_freq, ts->pat_packet_freq);
423
#endif
424

    
425
    /* write info at the start of the file, so that it will be fast to
426
       find them */
427
    mpegts_write_sdt(s);
428
    mpegts_write_pat(s);
429
    for(i = 0; i < ts->nb_services; i++) {
430
        mpegts_write_pmt(s, ts->services[i]);
431
    }
432
    put_flush_packet(&s->pb);
433

    
434
    return 0;
435

    
436
 fail:
437
    for(i = 0;i < s->nb_streams; i++) {
438
        st = s->streams[i];
439
        av_free(st->priv_data);
440
    }
441
    return -1;
442
}
443

    
444
/* send SDT, PAT and PMT tables regulary */
445
static void retransmit_si_info(AVFormatContext *s)
446
{
447
    MpegTSWrite *ts = s->priv_data;
448
    int i;
449

    
450
    if (++ts->sdt_packet_count == ts->sdt_packet_freq) {
451
        ts->sdt_packet_count = 0;
452
        mpegts_write_sdt(s);
453
    }
454
    if (++ts->pat_packet_count == ts->pat_packet_freq) {
455
        ts->pat_packet_count = 0;
456
        mpegts_write_pat(s);
457
        for(i = 0; i < ts->nb_services; i++) {
458
            mpegts_write_pmt(s, ts->services[i]);
459
        }
460
    }
461
}
462

    
463
/* NOTE: pes_data contains all the PES packet */
464
static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
465
                             const uint8_t *payload, int payload_size,
466
                             int64_t pts)
467
{
468
    MpegTSWriteStream *ts_st = st->priv_data;
469
    uint8_t buf[TS_PACKET_SIZE];
470
    uint8_t *q;
471
    int val, is_start, len, header_len, write_pcr, private_code;
472
    int afc_len, stuffing_len;
473
    int64_t pcr = -1; /* avoid warning */
474

    
475
    is_start = 1;
476
    while (payload_size > 0) {
477
        retransmit_si_info(s);
478

    
479
        write_pcr = 0;
480
        if (ts_st->pid == ts_st->service->pcr_pid) {
481
            ts_st->service->pcr_packet_count++;
482
            if (ts_st->service->pcr_packet_count >=
483
                ts_st->service->pcr_packet_freq) {
484
                ts_st->service->pcr_packet_count = 0;
485
                write_pcr = 1;
486
                /* XXX: this is incorrect, but at least we have a PCR
487
                   value */
488
                pcr = pts;
489
            }
490
        }
491

    
492
        /* prepare packet header */
493
        q = buf;
494
        *q++ = 0x47;
495
        val = (ts_st->pid >> 8);
496
        if (is_start)
497
            val |= 0x40;
498
        *q++ = val;
499
        *q++ = ts_st->pid;
500
        *q++ = 0x10 | ts_st->cc | (write_pcr ? 0x20 : 0);
501
        ts_st->cc = (ts_st->cc + 1) & 0xf;
502
        if (write_pcr) {
503
            *q++ = 7; /* AFC length */
504
            *q++ = 0x10; /* flags: PCR present */
505
            *q++ = pcr >> 25;
506
            *q++ = pcr >> 17;
507
            *q++ = pcr >> 9;
508
            *q++ = pcr >> 1;
509
            *q++ = (pcr & 1) << 7;
510
            *q++ = 0;
511
        }
512
        if (is_start) {
513
            /* write PES header */
514
            *q++ = 0x00;
515
            *q++ = 0x00;
516
            *q++ = 0x01;
517
            private_code = 0;
518
            if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
519
                *q++ = 0xe0;
520
            } else if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
521
                       (st->codec->codec_id == CODEC_ID_MP2 ||
522
                        st->codec->codec_id == CODEC_ID_MP3)) {
523
                *q++ = 0xc0;
524
            } else {
525
                *q++ = 0xbd;
526
                if (st->codec->codec_type == CODEC_TYPE_SUBTITLE) {
527
                    private_code = 0x20;
528
                }
529
            }
530
            if (pts != AV_NOPTS_VALUE)
531
                header_len = 8;
532
            else
533
                header_len = 3;
534
            if (private_code != 0)
535
                header_len++;
536
            len = payload_size + header_len;
537
            *q++ = len >> 8;
538
            *q++ = len;
539
            val = 0x80;
540
            /* data alignment indicator is required for subtitle data */
541
            if (st->codec->codec_type == CODEC_TYPE_SUBTITLE)
542
                val |= 0x04;
543
            *q++ = val;
544
            if (pts != AV_NOPTS_VALUE) {
545
                *q++ = 0x80; /* PTS only */
546
                *q++ = 0x05; /* header len */
547
                val = (0x02 << 4) |
548
                    (((pts >> 30) & 0x07) << 1) | 1;
549
                *q++ = val;
550
                val = (((pts >> 15) & 0x7fff) << 1) | 1;
551
                *q++ = val >> 8;
552
                *q++ = val;
553
                val = (((pts) & 0x7fff) << 1) | 1;
554
                *q++ = val >> 8;
555
                *q++ = val;
556
            } else {
557
                *q++ = 0x00;
558
                *q++ = 0x00;
559
            }
560
            if (private_code != 0)
561
                *q++ = private_code;
562
            is_start = 0;
563
        }
564
        /* header size */
565
        header_len = q - buf;
566
        /* data len */
567
        len = TS_PACKET_SIZE - header_len;
568
        if (len > payload_size)
569
            len = payload_size;
570
        stuffing_len = TS_PACKET_SIZE - header_len - len;
571
        if (stuffing_len > 0) {
572
            /* add stuffing with AFC */
573
            if (buf[3] & 0x20) {
574
                /* stuffing already present: increase its size */
575
                afc_len = buf[4] + 1;
576
                memmove(buf + 4 + afc_len + stuffing_len,
577
                        buf + 4 + afc_len,
578
                        header_len - (4 + afc_len));
579
                buf[4] += stuffing_len;
580
                memset(buf + 4 + afc_len, 0xff, stuffing_len);
581
            } else {
582
                /* add stuffing */
583
                memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
584
                buf[3] |= 0x20;
585
                buf[4] = stuffing_len - 1;
586
                if (stuffing_len >= 2) {
587
                    buf[5] = 0x00;
588
                    memset(buf + 6, 0xff, stuffing_len - 2);
589
                }
590
            }
591
        }
592
        memcpy(buf + TS_PACKET_SIZE - len, payload, len);
593
        payload += len;
594
        payload_size -= len;
595
        put_buffer(&s->pb, buf, TS_PACKET_SIZE);
596
    }
597
    put_flush_packet(&s->pb);
598
}
599

    
600
static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
601
{
602
    AVStream *st = s->streams[pkt->stream_index];
603
    int size= pkt->size;
604
    uint8_t *buf= pkt->data;
605
    MpegTSWriteStream *ts_st = st->priv_data;
606
    int len, max_payload_size;
607

    
608
    if (st->codec->codec_type == CODEC_TYPE_SUBTITLE) {
609
        /* for subtitle, a single PES packet must be generated */
610
        mpegts_write_pes(s, st, buf, size, pkt->pts);
611
        return 0;
612
    }
613

    
614
    max_payload_size = DEFAULT_PES_PAYLOAD_SIZE;
615
    while (size > 0) {
616
        len = max_payload_size - ts_st->payload_index;
617
        if (len > size)
618
            len = size;
619
        memcpy(ts_st->payload + ts_st->payload_index, buf, len);
620
        buf += len;
621
        size -= len;
622
        ts_st->payload_index += len;
623
        if (ts_st->payload_pts == AV_NOPTS_VALUE)
624
            ts_st->payload_pts = pkt->pts;
625
        if (ts_st->payload_index >= max_payload_size) {
626
            mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
627
                             ts_st->payload_pts);
628
            ts_st->payload_pts = AV_NOPTS_VALUE;
629
            ts_st->payload_index = 0;
630
        }
631
    }
632
    return 0;
633
}
634

    
635
static int mpegts_write_end(AVFormatContext *s)
636
{
637
    MpegTSWrite *ts = s->priv_data;
638
    MpegTSWriteStream *ts_st;
639
    MpegTSService *service;
640
    AVStream *st;
641
    int i;
642

    
643
    /* flush current packets */
644
    for(i = 0; i < s->nb_streams; i++) {
645
        st = s->streams[i];
646
        ts_st = st->priv_data;
647
        if (ts_st->payload_index > 0) {
648
            mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
649
                             ts_st->payload_pts);
650
        }
651
    }
652
    put_flush_packet(&s->pb);
653

    
654
    for(i = 0; i < ts->nb_services; i++) {
655
        service = ts->services[i];
656
        av_freep(&service->provider_name);
657
        av_freep(&service->name);
658
        av_free(service);
659
    }
660
    av_free(ts->services);
661

    
662
    return 0;
663
}
664

    
665
AVOutputFormat mpegts_muxer = {
666
    "mpegts",
667
    "MPEG2 transport stream format",
668
    "video/x-mpegts",
669
    "ts",
670
    sizeof(MpegTSWrite),
671
    CODEC_ID_MP2,
672
    CODEC_ID_MPEG2VIDEO,
673
    mpegts_write_header,
674
    mpegts_write_packet,
675
    mpegts_write_end,
676
};