movenc.c 31.9 KB
Newer Older
1 2 3
/*
 * MOV, 3GP, MP4 encoder.
 * Copyright (c) 2003 Thomas Raivio.
4
 * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include "avformat.h"
21
#include "avi.h"
22 23
#include "avio.h"

24 25 26
#undef NDEBUG
#include <assert.h>

27 28 29
#define MOV_INDEX_CLUSTER_SIZE 16384
#define globalTimescale 1000

30 31 32 33
#define MODE_MP4 0
#define MODE_MOV 1
#define MODE_3GP 2

34
typedef struct MOVIentry {
35 36
    unsigned int flags, pos, size;
    unsigned int samplesInChunk;
37
    char         key_frame;
38 39 40 41
    unsigned int entries;
} MOVIentry;

typedef struct MOVIndex {
42
    int         mode;
43 44 45 46 47
    int         entry;
    int         mdat_size;
    int         ents_allocated;
    long        timescale;
    long        time;
48
    long        trackDuration;
49 50
    long        sampleCount;
    long        sampleDuration;
51
    int         hasKeyframes;
52 53 54 55
    int         trackID;
    AVCodecContext *enc;

    int         vosLen;
56
    uint8_t     *vosData;
57 58 59 60
    MOVIentry** cluster;
} MOVTrack;

typedef struct {
61
    int     mode;
62 63
    long    time;
    int     nb_streams;
64 65
    int     mdat_written;
    offset_t mdat_pos;
66 67 68 69
    long    timescale;
    MOVTrack tracks[MAX_STREAMS];
} MOVContext;

70 71
static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track);

72 73
//FIXME supprt 64bit varaint with wide placeholders
static int updateSize (ByteIOContext *pb, int pos)
74 75 76
{
    long curpos = url_ftell(pb);
    url_fseek(pb, pos, SEEK_SET);
77
    put_be32(pb, curpos - pos); /* rewrite size */
78
    url_fseek(pb, curpos, SEEK_SET);
79 80

    return curpos - pos;
81 82
}

83
/* Chunk offset atom */
84
static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
85 86
{
    int i;
87 88
    int pos = url_ftell(pb);
    put_be32(pb, 0); /* size */
89 90 91 92 93 94 95 96
    put_tag(pb, "stco");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, track->entry); /* entry count */
    for (i=0; i<track->entry; i++) {
        int cl = i / MOV_INDEX_CLUSTER_SIZE;
        int id = i % MOV_INDEX_CLUSTER_SIZE;
        put_be32(pb, track->cluster[cl][id].pos);
    }
97
    return updateSize (pb, pos);
98 99
}

100
/* Sample size atom */
101
static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack* track)
102
{
103
    int equalChunks = 1;
104
    int i, j, entries = 0, tst = -1, oldtst = -1;
105

106 107
    int pos = url_ftell(pb);
    put_be32(pb, 0); /* size */
108 109 110
    put_tag(pb, "stsz");
    put_be32(pb, 0); /* version & flags */

111 112 113
    for (i=0; i<track->entry; i++) {
        int cl = i / MOV_INDEX_CLUSTER_SIZE;
        int id = i % MOV_INDEX_CLUSTER_SIZE;
114 115 116
        tst = track->cluster[cl][id].size/track->cluster[cl][id].entries;
        if(oldtst != -1 && tst != oldtst) {
            equalChunks = 0;
117 118
        }
        oldtst = tst;
119
        entries += track->cluster[cl][id].entries;
120
    }
121 122
    if (equalChunks) {
        int sSize = track->cluster[0][0].size/track->cluster[0][0].entries;
123
        put_be32(pb, sSize); // sample size 
124
        put_be32(pb, entries); // sample count
125
    }
126 127
    else {
        put_be32(pb, 0); // sample size 
128
        put_be32(pb, entries); // sample count 
129
        for (i=0; i<track->entry; i++) {
130 131
            int cl = i / MOV_INDEX_CLUSTER_SIZE;
            int id = i % MOV_INDEX_CLUSTER_SIZE;
132 133 134 135
            for ( j=0; j<track->cluster[cl][id].entries; j++) {
                put_be32(pb, track->cluster[cl][id].size /
                         track->cluster[cl][id].entries);
            }
136 137
        }
    }
138
    return updateSize (pb, pos);
139 140
}

141
/* Sample to chunk atom */
142
static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack* track)
143
{
144 145 146 147
    int index = 0, oldval = -1, i, entryPos, curpos;

    int pos = url_ftell(pb);
    put_be32(pb, 0); /* size */
148 149
    put_tag(pb, "stsc");
    put_be32(pb, 0); // version & flags 
150 151 152 153 154
    entryPos = url_ftell(pb);
    put_be32(pb, track->entry); // entry count 
    for (i=0; i<track->entry; i++) {
        int cl = i / MOV_INDEX_CLUSTER_SIZE;
        int id = i % MOV_INDEX_CLUSTER_SIZE;
155
        if(oldval != track->cluster[cl][id].samplesInChunk)
156
        {
157
            put_be32(pb, i+1); // first chunk 
158
            put_be32(pb, track->cluster[cl][id].samplesInChunk); // samples per chunk
159
            put_be32(pb, 0x1); // sample description index 
160
            oldval = track->cluster[cl][id].samplesInChunk;
161
            index++;
162 163
        }
    }
164 165 166 167
    curpos = url_ftell(pb);
    url_fseek(pb, entryPos, SEEK_SET);
    put_be32(pb, index); // rewrite size 
    url_fseek(pb, curpos, SEEK_SET);
168

169
    return updateSize (pb, pos);
170 171
}

172
/* Sync sample atom */
173
static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack* track)
174
{
175 176 177 178
    long curpos;
    int i, index = 0, entryPos;
    int pos = url_ftell(pb);
    put_be32(pb, 0); // size 
179
    put_tag(pb, "stss");
180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
    put_be32(pb, 0); // version & flags 
    entryPos = url_ftell(pb);
    put_be32(pb, track->entry); // entry count 
    for (i=0; i<track->entry; i++) {
        int cl = i / MOV_INDEX_CLUSTER_SIZE;
        int id = i % MOV_INDEX_CLUSTER_SIZE;
        if(track->cluster[cl][id].key_frame == 1) {
            put_be32(pb, i+1);
            index++;
        }
    }
    curpos = url_ftell(pb);
    url_fseek(pb, entryPos, SEEK_SET);
    put_be32(pb, index); // rewrite size 
    url_fseek(pb, curpos, SEEK_SET);
    return updateSize (pb, pos);
196 197
}

198
static int mov_write_damr_tag(ByteIOContext *pb)
199 200 201 202 203
{
    put_be32(pb, 0x11); /* size */
    put_tag(pb, "damr");
    put_tag(pb, "FFMP");
    put_byte(pb, 0);
204 205 206 207 208

    put_be16(pb, 0x80); /* Mode set (all modes for AMR_NB) */
    put_be16(pb, 0xa); /* Mode change period (no restriction) */
    //put_be16(pb, 0x81ff); /* Mode set (all modes for AMR_NB) */
    //put_be16(pb, 1); /* Mode change period (no restriction) */
209 210 211
    return 0x11;
}

212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238
static int mov_write_wave_tag(ByteIOContext *pb, MOVTrack* track)
{
    int pos = url_ftell(pb);

    put_be32(pb, 0);     /* size */
    put_tag(pb, "wave");

    put_be32(pb, 12);    /* size */
    put_tag(pb, "frma");
    put_tag(pb, "mp4a");

    put_be32(pb, 12);    /* size */
    put_tag(pb, "mp4a");
    put_be32(pb, 0);

    mov_write_esds_tag(pb, track);

    put_be32(pb, 12);    /* size */
    put_tag(pb, "srcq");
    put_be32(pb, 0x40);

    put_be32(pb, 8);     /* size */
    put_be32(pb, 0);     /* null tag */

    return updateSize (pb, pos);
}

239
static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
240
{
241
    int pos = url_ftell(pb);
242
    put_be32(pb, 0); /* size */
243 244 245 246 247 248 249 250 251 252 253 254 255 256 257

    if(track->enc->codec_id == CODEC_ID_PCM_MULAW)
      put_tag(pb, "ulaw");
    else if(track->enc->codec_id == CODEC_ID_PCM_ALAW)
      put_tag(pb, "alaw");
    else if(track->enc->codec_id == CODEC_ID_ADPCM_IMA_QT)
      put_tag(pb, "ima4");
    else if(track->enc->codec_id == CODEC_ID_MACE3)
      put_tag(pb, "MAC3");
    else if(track->enc->codec_id == CODEC_ID_MACE6)
      put_tag(pb, "MAC6");
    else if(track->enc->codec_id == CODEC_ID_AAC)
      put_tag(pb, "mp4a");
    else if(track->enc->codec_id == CODEC_ID_AMR_NB)
      put_tag(pb, "samr");
Roman Shaposhnik's avatar
Roman Shaposhnik committed
258 259 260 261
    else if(track->enc->codec_id == CODEC_ID_PCM_S16BE)
      put_tag(pb, "twos");
    else if(track->enc->codec_id == CODEC_ID_PCM_S16LE)
      put_tag(pb, "sowt");
262 263 264
    else
      put_tag(pb, "    ");

265 266 267
    put_be32(pb, 0); /* Reserved */
    put_be16(pb, 0); /* Reserved */
    put_be16(pb, 1); /* Data-reference index, XXX  == 1 */
268

269
    /* SoundDescription */
270 271 272 273
    if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
        put_be16(pb, 1); /* Version 1 */
    else
        put_be16(pb, 0); /* Version 0 */
274
    put_be16(pb, 0); /* Revision level */
275 276
    put_be32(pb, 0); /* Reserved */

277 278
    put_be16(pb, track->enc->channels); /* Number of channels */
    /* TODO: Currently hard-coded to 16-bit, there doesn't seem
279
                 to be a good way to get number of bits of audio */
280
    put_be16(pb, 0x10); /* Reserved */
281 282
    put_be16(pb, 0xfffe); /* compression ID (= 0) */
    put_be16(pb, 0xac); /* packet size (= 0) */
283 284 285
    put_be16(pb, track->timescale); /* Time scale */
    put_be16(pb, 0); /* Reserved */

286 287 288 289 290 291 292 293 294 295 296 297 298
    if(track->mode == MODE_MOV && track->enc->codec_id == CODEC_ID_AAC)
    {
        /* SoundDescription V1 extended info */
        put_be32(pb, track->enc->frame_size); /* Samples per packet  */
        put_be32(pb, 1536); /* Bytes per packet */
        put_be32(pb, 2); /* Bytes per frame */
        put_be32(pb, 2); /* Bytes per sample */
    }

    if(track->enc->codec_id == CODEC_ID_AAC) {
        if( track->mode == MODE_MOV ) mov_write_wave_tag(pb, track);
        else mov_write_esds_tag(pb, track);
    }
299 300
    if(track->enc->codec_id == CODEC_ID_AMR_NB)
        mov_write_damr_tag(pb);
301
    return updateSize (pb, pos);
302 303
}

304
static int mov_write_d263_tag(ByteIOContext *pb)
305 306 307 308 309 310 311 312 313
{
    put_be32(pb, 0xf); /* size */
    put_tag(pb, "d263");
    put_tag(pb, "FFMP");
    put_be16(pb, 0x0a);
    put_byte(pb, 0);
    return 0xf;
}

314 315
/* TODO: No idea about these values */
static int mov_write_svq3_tag(ByteIOContext *pb)
316
{
317 318 319 320 321 322 323 324
    put_be32(pb, 0x15);
    put_tag(pb, "SMI ");
    put_tag(pb, "SEQH");
    put_be32(pb, 0x5);
    put_be32(pb, 0xe2c0211d);
    put_be32(pb, 0xc0000000);
    put_byte(pb, 0);   
    return 0x15;
325 326
}

327 328 329 330 331 332 333 334 335 336 337 338 339
static unsigned int descrLength(unsigned int len)
{
    if (len < 0x00000080)
        return 2 + len;
    else if (len < 0x00004000)
        return 3 + len;
    else if(len < 0x00200000)
        return 4 + len;
    else
        return 5 + len;
}

static void putDescr(ByteIOContext *pb, int tag, int size)
340
{
341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376
    uint32_t len;
    uint8_t  vals[4];

    len = size;
    vals[3] = (uint8_t)(len & 0x7f);
    len >>= 7;
    vals[2] = (uint8_t)((len & 0x7f) | 0x80); 
    len >>= 7;
    vals[1] = (uint8_t)((len & 0x7f) | 0x80); 
    len >>= 7;
    vals[0] = (uint8_t)((len & 0x7f) | 0x80);

    put_byte(pb, tag); // DescriptorTag

    if (size < 0x00000080)
    {
        put_byte(pb, vals[3]);
    }
    else if (size < 0x00004000)
    {
        put_byte(pb, vals[2]);
        put_byte(pb, vals[3]);
    }
    else if (size < 0x00200000)
    {
        put_byte(pb, vals[1]);
        put_byte(pb, vals[2]);
        put_byte(pb, vals[3]);
    }
    else if (size < 0x10000000)
    {
        put_byte(pb, vals[0]);
        put_byte(pb, vals[1]);
        put_byte(pb, vals[2]);
        put_byte(pb, vals[3]);
    }
377 378
}

379
static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
380
{
381 382 383 384
    int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;
    int pos = url_ftell(pb);

    put_be32(pb, 0);               // size
385
    put_tag(pb, "esds");
386
    put_be32(pb, 0);               // Version
387

388 389 390 391
    // ES descriptor
    putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +
             descrLength(1));
    put_be16(pb, 0x0001);          // ID (= 1)
392 393
    put_byte(pb, 0x00);            // flags (= no flags)

394 395 396 397 398 399 400 401 402 403 404 405 406
    // DecoderConfig descriptor
    putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);

    if(track->enc->codec_id == CODEC_ID_AAC)
        put_byte(pb, 0x40);        // Object type indication
    else if(track->enc->codec_id == CODEC_ID_MPEG4)
        put_byte(pb, 0x20);        // Object type indication (Visual 14496-2)

    if(track->enc->codec_type == CODEC_TYPE_AUDIO)
        put_byte(pb, 0x15);            // flags (= Audiostream)
    else
        put_byte(pb, 0x11);            // flags (= Visualstream)

407 408 409 410 411 412 413
    put_byte(pb, 0x0);             // Buffersize DB (24 bits)
    put_be16(pb, 0x0dd2);          // Buffersize DB

    // TODO: find real values for these
    put_be32(pb, 0x0002e918);     // maxbitrate
    put_be32(pb, 0x00017e6b);     // avg bitrate

414 415 416 417 418 419 420 421
    if (track->vosLen)
    {
        // DecoderSpecific info descriptor
        putDescr(pb, 0x05, track->vosLen);
        put_buffer(pb, track->vosData, track->vosLen);
    }

    // SL descriptor
422
    putDescr(pb, 0x06, 1);
423
    put_byte(pb, 0x02);
424
    return updateSize (pb, pos);
425 426
}

427
static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
428
{
429
    int pos = url_ftell(pb);
430 431 432 433 434 435 436 437 438
    put_be32(pb, 0); /* size */
    if(track->enc->codec_id == CODEC_ID_SVQ1)
      put_tag(pb, "SVQ1");
    else if(track->enc->codec_id == CODEC_ID_SVQ3)
      put_tag(pb, "SVQ3");
    else if(track->enc->codec_id == CODEC_ID_MPEG4)
      put_tag(pb, "mp4v");
    else if(track->enc->codec_id == CODEC_ID_H263)
      put_tag(pb, "s263");
Roman Shaposhnik's avatar
Roman Shaposhnik committed
439 440
    else if(track->enc->codec_id == CODEC_ID_DVVIDEO)
      put_tag(pb, "dvc ");
441 442
    else
      put_tag(pb, "    "); /* Unknown tag */
443

444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476
    put_be32(pb, 0); /* Reserved */
    put_be16(pb, 0); /* Reserved */
    put_be16(pb, 1); /* Data-reference index */

    put_be32(pb, 0); /* Reserved (= 02000c) */
    put_be32(pb, 0); /* Reserved ("SVis")*/
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved (400)*/
    put_be16(pb, track->enc->width); /* Video width */
    put_be16(pb, track->enc->height); /* Video height */
    put_be32(pb, 0x00480000); /* Reserved */
    put_be32(pb, 0x00480000); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */

    put_be16(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be32(pb, 0); /* Reserved */
    put_be16(pb, 0x18); /* Reserved */
    put_be16(pb, 0xffff); /* Reserved */
    if(track->enc->codec_id == CODEC_ID_MPEG4)
        mov_write_esds_tag(pb, track);
    else if(track->enc->codec_id == CODEC_ID_H263)
        mov_write_d263_tag(pb);
    else if(track->enc->codec_id == CODEC_ID_SVQ3)
        mov_write_svq3_tag(pb);    

    return updateSize (pb, pos);
477 478
}

479
static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack* track)
480
{
481
    int pos = url_ftell(pb);
482 483 484 485
    put_be32(pb, 0); /* size */
    put_tag(pb, "stsd");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, 1); /* entry count */
486 487 488 489
    if (track->enc->codec_type == CODEC_TYPE_VIDEO)
        mov_write_video_tag(pb, track);
    else if (track->enc->codec_type == CODEC_TYPE_AUDIO)
        mov_write_audio_tag(pb, track);
490
    return updateSize(pb, pos);
491 492
}

493
/* TODO?: Currently all samples/frames seem to have same duration */
494
/* Time to sample atom */
495
static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
496 497 498 499 500 501
{
    put_be32(pb, 0x18); /* size */
    put_tag(pb, "stts");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, 1); /* entry count */

502 503
    put_be32(pb, track->sampleCount); /* sample count */
    put_be32(pb, track->sampleDuration); /* sample duration */
504 505 506
    return 0x18;
}

507
static int mov_write_dref_tag(ByteIOContext *pb)
508 509 510 511 512 513 514 515 516 517 518 519 520
{
    put_be32(pb, 28); /* size */
    put_tag(pb, "dref");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, 1); /* entry count */

    put_be32(pb, 0xc); /* size */
    put_tag(pb, "url ");
    put_be32(pb, 1); /* version & flags */

    return 28;
}

521
static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack* track)
522
{
523
    int pos = url_ftell(pb);
524 525
    put_be32(pb, 0); /* size */
    put_tag(pb, "stbl");
526 527
    mov_write_stsd_tag(pb, track);
    mov_write_stts_tag(pb, track);
528 529 530
    if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
        track->hasKeyframes)
        mov_write_stss_tag(pb, track);
531 532 533 534
    mov_write_stsc_tag(pb, track);
    mov_write_stsz_tag(pb, track);
    mov_write_stco_tag(pb, track);
    return updateSize(pb, pos);
535 536
}

537
static int mov_write_dinf_tag(ByteIOContext *pb)
538
{
539
    int pos = url_ftell(pb);
540 541
    put_be32(pb, 0); /* size */
    put_tag(pb, "dinf");
542 543
    mov_write_dref_tag(pb);
    return updateSize(pb, pos);
544 545
}

546
static int mov_write_smhd_tag(ByteIOContext *pb)
547 548 549 550 551 552 553 554 555
{
    put_be32(pb, 16); /* size */
    put_tag(pb, "smhd");
    put_be32(pb, 0); /* version & flags */
    put_be16(pb, 0); /* reserved (balance, normally = 0) */
    put_be16(pb, 0); /* reserved */
    return 16;
}

556
static int mov_write_vmhd_tag(ByteIOContext *pb)
557 558 559 560 561 562 563 564
{
    put_be32(pb, 0x14); /* size (always 0x14) */
    put_tag(pb, "vmhd");
    put_be32(pb, 0x01); /* version & flags */
    put_be64(pb, 0); /* reserved (graphics mode = copy) */
    return 0x14;
}

565
static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack* track)
566
{
567
    int pos = url_ftell(pb);
568 569 570
    put_be32(pb, 0); /* size */
    put_tag(pb, "minf");
    if(track->enc->codec_type == CODEC_TYPE_VIDEO)
571
        mov_write_vmhd_tag(pb);
572
    else
573 574 575 576
        mov_write_smhd_tag(pb);
    mov_write_dinf_tag(pb);
    mov_write_stbl_tag(pb, track);
    return updateSize(pb, pos);
577 578
}

579
static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack* track)
580
{
581 582 583
    char *str;
    int pos = url_ftell(pb);
    put_be32(pb, 0); /* size */
584 585
    put_tag(pb, "hdlr");
    put_be32(pb, 0); /* Version & flags */
Roman Shaposhnik's avatar
Roman Shaposhnik committed
586 587 588 589
    if (track->mode == MODE_MOV)
        put_tag(pb, "mhlr"); /* handler */
    else
	put_be32(pb, 0); /* reserved */
590 591 592 593
    if(track->enc->codec_type == CODEC_TYPE_VIDEO)
        put_tag(pb, "vide"); /* handler type */
    else
        put_tag(pb, "soun"); /* handler type */
594 595 596
    put_be32(pb ,0); /* reserved */
    put_be32(pb ,0); /* reserved */
    put_be32(pb ,0); /* reserved */
597
    if(track->enc->codec_type == CODEC_TYPE_VIDEO)
598
        str = "VideoHandler";
599
    else
600 601 602 603
        str = "SoundHandler";
    put_byte(pb, strlen(str)); /* string counter */
    put_buffer(pb, str, strlen(str));
    return updateSize(pb, pos);
604 605
}

606
static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack* track)
607 608 609 610 611 612
{
    put_be32(pb, 32); /* size */
    put_tag(pb, "mdhd");
    put_be32(pb, 0); /* Version & flags */
    put_be32(pb, track->time); /* creation time */
    put_be32(pb, track->time); /* modification time */
613 614
    put_be32(pb, track->timescale); /* time scale (sample rate for audio) */ 
    put_be32(pb, track->trackDuration); /* duration */
615 616 617 618 619
    put_be16(pb, 0); /* language, 0 = english */
    put_be16(pb, 0); /* reserved (quality) */
    return 32;
}

620
static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack* track)
621
{
622
    int pos = url_ftell(pb);
623 624
    put_be32(pb, 0); /* size */
    put_tag(pb, "mdia");
625 626 627 628
    mov_write_mdhd_tag(pb, track);
    mov_write_hdlr_tag(pb, track);
    mov_write_minf_tag(pb, track);
    return updateSize(pb, pos);
629 630
}

631
static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack* track)
632
{
633
    int64_t maxTrackLenTemp;
634 635
    put_be32(pb, 0x5c); /* size (always 0x5c) */
    put_tag(pb, "tkhd");
636
    put_be32(pb, 0xf); /* version & flags (track enabled) */
637 638 639 640
    put_be32(pb, track->time); /* creation time */
    put_be32(pb, track->time); /* modification time */
    put_be32(pb, track->trackID); /* track-id */
    put_be32(pb, 0); /* reserved */
641 642
    maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)track->trackDuration)/(int64_t)track->timescale;
    put_be32(pb, (long)maxTrackLenTemp); /* duration */
643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666

    put_be32(pb, 0); /* reserved */
    put_be32(pb, 0); /* reserved */
    put_be32(pb, 0x0); /* reserved (Layer & Alternate group) */
    /* Volume, only for audio */
    if(track->enc->codec_type == CODEC_TYPE_AUDIO)
        put_be16(pb, 0x0100);
    else
        put_be16(pb, 0);
    put_be16(pb, 0); /* reserved */

    /* Matrix structure */
    put_be32(pb, 0x00010000); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x00010000); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x40000000); /* reserved */

    /* Track width and height, for visual only */
    if(track->enc->codec_type == CODEC_TYPE_VIDEO) {
667 668 669
        double sample_aspect_ratio = av_q2d(track->enc->sample_aspect_ratio);
        if( !sample_aspect_ratio ) sample_aspect_ratio = 1;
        put_be32(pb, sample_aspect_ratio * track->enc->width*0x10000);
670
        put_be32(pb, track->enc->height*0x10000);
671 672 673 674 675 676 677 678
    }
    else {
        put_be32(pb, 0);
        put_be32(pb, 0);
    }
    return 0x5c;
}

679
static int mov_write_trak_tag(ByteIOContext *pb, MOVTrack* track)
680
{
681
    int pos = url_ftell(pb);
682 683
    put_be32(pb, 0); /* size */
    put_tag(pb, "trak");
684 685 686
    mov_write_tkhd_tag(pb, track);
    mov_write_mdia_tag(pb, track);
    return updateSize(pb, pos);
687 688 689
}

/* TODO: Not sorted out, but not necessary either */
690
static int mov_write_iods_tag(ByteIOContext *pb, MOVContext *mov)
691 692 693 694 695 696 697 698 699 700 701 702
{
    put_be32(pb, 0x15); /* size */
    put_tag(pb, "iods");
    put_be32(pb, 0);    /* version & flags */
    put_be16(pb, 0x1007);
    put_byte(pb, 0);
    put_be16(pb, 0x4fff);
    put_be16(pb, 0xfffe);
    put_be16(pb, 0x01ff);
    return 0x15;
}

703
static int mov_write_mvhd_tag(ByteIOContext *pb, MOVContext *mov)
704 705
{
    int maxTrackID = 1, maxTrackLen = 0, i;
706
    int64_t maxTrackLenTemp;
707 708 709 710 711 712 713 714 715

    put_be32(pb, 0x6c); /* size (always 0x6c) */
    put_tag(pb, "mvhd");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, mov->time); /* creation time */
    put_be32(pb, mov->time); /* modification time */
    put_be32(pb, mov->timescale); /* timescale */
    for (i=0; i<MAX_STREAMS; i++) {
        if(mov->tracks[i].entry > 0) {
716 717 718
            maxTrackLenTemp = ((int64_t)globalTimescale*(int64_t)mov->tracks[i].trackDuration)/(int64_t)mov->tracks[i].timescale;
            if(maxTrackLen < maxTrackLenTemp)
                maxTrackLen = maxTrackLenTemp;
719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
            if(maxTrackID < mov->tracks[i].trackID)
                maxTrackID = mov->tracks[i].trackID;
        }
    }
    put_be32(pb, maxTrackLen); /* duration of longest track */

    put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
    put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
    put_be16(pb, 0); /* reserved */
    put_be32(pb, 0); /* reserved */
    put_be32(pb, 0); /* reserved */

    /* Matrix structure */
    put_be32(pb, 0x00010000); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x00010000); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x0); /* reserved */
    put_be32(pb, 0x40000000); /* reserved */

    put_be32(pb, 0); /* reserved (preview time) */
    put_be32(pb, 0); /* reserved (preview duration) */
    put_be32(pb, 0); /* reserved (poster time) */
    put_be32(pb, 0); /* reserved (selection time) */
    put_be32(pb, 0); /* reserved (selection duration) */
    put_be32(pb, 0); /* reserved (current time) */
    put_be32(pb, maxTrackID+1); /* Next track id */
    return 0x6c;
}

752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826
static int mov_write_udta_tag(ByteIOContext *pb, MOVContext* mov,
                              AVFormatContext *s)
{
    int pos = url_ftell(pb);
    int i;

    put_be32(pb, 0); /* size */
    put_tag(pb, "udta");

    /* Requirements */
    for (i=0; i<MAX_STREAMS; i++) {
        if(mov->tracks[i].entry <= 0) continue;
        if (mov->tracks[i].enc->codec_id == CODEC_ID_AAC ||
            mov->tracks[i].enc->codec_id == CODEC_ID_MPEG4) {
            int pos = url_ftell(pb);
            put_be32(pb, 0); /* size */
            put_tag(pb, "\251req");
            put_be16(pb, sizeof("QuickTime 6.0 or greater") - 1);
            put_be16(pb, 0);
            put_buffer(pb, "QuickTime 6.0 or greater",
                       sizeof("QuickTime 6.0 or greater") - 1);
            updateSize(pb, pos);
            break;
        }
    }

    /* Encoder */
    {
        int pos = url_ftell(pb);
        put_be32(pb, 0); /* size */
        put_tag(pb, "\251enc");
        put_be16(pb, sizeof(LIBAVFORMAT_IDENT) - 1); /* string length */
        put_be16(pb, 0);
        put_buffer(pb, LIBAVFORMAT_IDENT, sizeof(LIBAVFORMAT_IDENT) - 1);
        updateSize(pb, pos);
    }

    if( s->title[0] )
    {
        int pos = url_ftell(pb);
        put_be32(pb, 0); /* size */
        put_tag(pb, "\251nam");
        put_be16(pb, strlen(s->title)); /* string length */
        put_be16(pb, 0);
        put_buffer(pb, s->title, strlen(s->title));
        updateSize(pb, pos);
    }

    if( s->author[0] )
    {
        int pos = url_ftell(pb);
        put_be32(pb, 0); /* size */
        put_tag(pb, /*"\251aut"*/ "\251day" );
        put_be16(pb, strlen(s->author)); /* string length */
        put_be16(pb, 0);
        put_buffer(pb, s->author, strlen(s->author));
        updateSize(pb, pos);
    }

    if( s->comment[0] )
    {
        int pos = url_ftell(pb);
        put_be32(pb, 0); /* size */
        put_tag(pb, "\251des");
        put_be16(pb, strlen(s->comment)); /* string length */
        put_be16(pb, 0);
        put_buffer(pb, s->comment, strlen(s->comment));
        updateSize(pb, pos);
    }

    return updateSize(pb, pos);
}

static int mov_write_moov_tag(ByteIOContext *pb, MOVContext *mov,
                              AVFormatContext *s)
827
{
828
    int pos, i;
829 830 831 832 833 834
    pos = url_ftell(pb);
    put_be32(pb, 0); /* size placeholder*/
    put_tag(pb, "moov");
    mov->timescale = globalTimescale;

    for (i=0; i<MAX_STREAMS; i++) {
835 836 837 838 839 840 841 842 843 844 845
        if(mov->tracks[i].entry <= 0) continue;

        if(mov->tracks[i].enc->codec_type == CODEC_TYPE_VIDEO) {
            mov->tracks[i].timescale = mov->tracks[i].enc->frame_rate;
            mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_rate_base;
        }
        else if(mov->tracks[i].enc->codec_type == CODEC_TYPE_AUDIO) {
            /* If AMR, track timescale = 8000, AMR_WB = 16000 */
            if(mov->tracks[i].enc->codec_id == CODEC_ID_AMR_NB) {
                mov->tracks[i].sampleDuration = 160;  // Bytes per chunk
                mov->tracks[i].timescale = 8000;
846
            }
847 848 849
            else {
                mov->tracks[i].timescale = mov->tracks[i].enc->sample_rate;
                mov->tracks[i].sampleDuration = mov->tracks[i].enc->frame_size;
850 851
            }
        }
852 853 854 855 856

        mov->tracks[i].trackDuration = 
            mov->tracks[i].sampleCount * mov->tracks[i].sampleDuration;
        mov->tracks[i].time = mov->time;
        mov->tracks[i].trackID = i+1;
857 858
    }

859 860
    mov_write_mvhd_tag(pb, mov);
    //mov_write_iods_tag(pb, mov);
861 862
    for (i=0; i<MAX_STREAMS; i++) {
        if(mov->tracks[i].entry > 0) {
863
            mov_write_trak_tag(pb, &(mov->tracks[i]));
864 865 866
        }
    }

867 868
    mov_write_udta_tag(pb, mov, s);

869
    return updateSize(pb, pos);
870 871
}

872
int mov_write_mdat_tag(ByteIOContext *pb, MOVContext* mov)
873
{
874
    mov->mdat_pos = url_ftell(pb); 
875 876 877 878 879 880
    put_be32(pb, 0); /* size placeholder*/
    put_tag(pb, "mdat");
    return 0;
}

/* TODO: This needs to be more general */
881
int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
882
{
883 884
    MOVContext *mov = s->priv_data;

885 886
    put_be32(pb, 0x14 ); /* size */
    put_tag(pb, "ftyp");
887

888
    if ( mov->mode == MODE_3GP )
889 890 891 892
        put_tag(pb, "3gp4");
    else
        put_tag(pb, "isom");

893
    put_be32(pb, 0x200 );
894

895
    if ( mov->mode == MODE_3GP )
896 897 898 899
        put_tag(pb, "3gp4");
    else
        put_tag(pb, "mp41");

900 901 902 903 904 905
    return 0x14;
}

static int mov_write_header(AVFormatContext *s)
{
    ByteIOContext *pb = &s->pb;
906 907
    MOVContext *mov = s->priv_data;
    int i;
908

909 910 911 912 913 914 915 916 917 918 919 920 921
    /* Default mode == MP4 */
    mov->mode = MODE_MP4;

    if (s->oformat != NULL) {
        if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
        else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;

        if ( mov->mode == MODE_3GP || mov->mode == MODE_MP4 )
            mov_write_ftyp_tag(pb,s);
    }

    for (i=0; i<MAX_STREAMS; i++) {
        mov->tracks[i].mode = mov->mode;
922 923
    }

924 925 926 927 928
    put_flush_packet(pb);

    return 0;
}

Falk Hüffner's avatar
Falk Hüffner committed
929
static int Timestamp(void) {
930
    return 1067949799U+(24107*86400); //its the modification time of this line :)
931 932 933
}

static int mov_write_packet(AVFormatContext *s, int stream_index,
934
                            const uint8_t *buf, int size, int64_t pts)
935 936 937
{
    MOVContext *mov = s->priv_data;
    ByteIOContext *pb = &s->pb;
938 939
    AVCodecContext *enc = &s->streams[stream_index]->codec;
    MOVTrack* trk = &mov->tracks[stream_index];
940
    int cl, id;
941
    unsigned int samplesInChunk = 0;
942

943 944
    if (url_is_streamed(&s->pb)) return 0; /* Can't handle that */
    if (!size) return 0; /* Discard 0 sized packets */
945

946 947 948 949 950
    if (enc->codec_type == CODEC_TYPE_VIDEO ) {
        samplesInChunk = 1;
    }
    else if (enc->codec_type == CODEC_TYPE_AUDIO ) {
        if( enc->codec_id == CODEC_ID_AMR_NB) {
951
            /* We must find out how many AMR blocks there are in one packet */
952 953 954 955 956 957 958
            static uint16_t packed_size[16] =
                {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
            int len = 0;

            while (len < size && samplesInChunk < 100) {
                len += packed_size[(buf[len] >> 3) & 0x0F];
                samplesInChunk++;
959
            }
960
        }
961 962
        else if(enc->codec_id == CODEC_ID_PCM_ALAW) {
            samplesInChunk = size/enc->channels;
963
        }
964 965
        else {
            samplesInChunk = 1;
966
        }
967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995
    }

    if ((enc->codec_id == CODEC_ID_MPEG4 || enc->codec_id == CODEC_ID_AAC)
        && trk->vosLen == 0) {
        assert(enc->extradata_size);

        trk->vosLen = enc->extradata_size;
        trk->vosData = av_malloc(trk->vosLen);
        memcpy(trk->vosData, enc->extradata, trk->vosLen);
    }

    cl = trk->entry / MOV_INDEX_CLUSTER_SIZE;
    id = trk->entry % MOV_INDEX_CLUSTER_SIZE;

    if (trk->ents_allocated <= trk->entry) {
        trk->cluster = av_realloc(trk->cluster, (cl+1)*sizeof(void*)); 
        if (!trk->cluster)
            return -1;
        trk->cluster[cl] = av_malloc(MOV_INDEX_CLUSTER_SIZE*sizeof(MOVIentry));
        if (!trk->cluster[cl])
            return -1;
        trk->ents_allocated += MOV_INDEX_CLUSTER_SIZE;
    }
    if (mov->mdat_written == 0) {
        mov_write_mdat_tag(pb, mov);
        mov->mdat_written = 1;
        mov->time = Timestamp();
    }

996
    trk->cluster[cl][id].pos = url_ftell(pb);
997 998 999 1000 1001 1002
    trk->cluster[cl][id].samplesInChunk = samplesInChunk;
    trk->cluster[cl][id].size = size;
    trk->cluster[cl][id].entries = samplesInChunk;
    if(enc->codec_type == CODEC_TYPE_VIDEO) {
        trk->cluster[cl][id].key_frame = enc->coded_frame->key_frame;
        if(enc->coded_frame->pict_type == FF_I_TYPE)
1003
            trk->hasKeyframes = 1;
1004
    }
1005 1006 1007 1008 1009
    trk->enc = enc;
    trk->entry++;
    trk->sampleCount += samplesInChunk;
    trk->mdat_size += size;

1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
    put_buffer(pb, buf, size);

    put_flush_packet(pb);
    return 0;
}

static int mov_write_trailer(AVFormatContext *s