movenc.c 51.5 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
 *
 * 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
18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 20
 */
#include "avformat.h"
21
#include "riff.h"
22
#include "avio.h"
23
#include "isom.h"
24

25 26 27
#undef NDEBUG
#include <assert.h>

28 29 30
#define MOV_INDEX_CLUSTER_SIZE 16384
#define globalTimescale 1000

31 32 33
#define MODE_MP4 0
#define MODE_MOV 1
#define MODE_3GP 2
34
#define MODE_PSP 3 // example working PSP command line:
35
// ffmpeg -i testinput.avi  -f psp -r 14.985 -s 320x240 -b 768 -ar 24000 -ab 32 M4V00001.MP4
36
#define MODE_3G2 4
37

38
typedef struct MOVIentry {
39 40
    unsigned int flags, size;
    uint64_t     pos;
41
    unsigned int samplesInChunk;
42
    char         key_frame;
43
    unsigned int entries;
44
    int64_t      cts;
45 46 47
} MOVIentry;

typedef struct MOVIndex {
48
    int         mode;
49 50 51
    int         entry;
    long        timescale;
    long        time;
52
    int64_t     trackDuration;
53 54
    long        sampleCount;
    long        sampleDuration;
55
    long        sampleSize;
56
    int         hasKeyframes;
57
    int         hasBframes;
58
    int         language;
59
    int         trackID;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
60
    int         tag;
61 62 63
    AVCodecContext *enc;

    int         vosLen;
64
    uint8_t     *vosData;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
65
    MOVIentry   *cluster;
66 67
} MOVTrack;

68
typedef struct MOVContext {
69
    int     mode;
70
    int64_t time;
71
    int     nb_streams;
72
    offset_t mdat_pos;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
73
    uint64_t mdat_size;
74 75 76 77
    long    timescale;
    MOVTrack tracks[MAX_STREAMS];
} MOVContext;

78
//FIXME supprt 64bit varaint with wide placeholders
79
static offset_t updateSize (ByteIOContext *pb, offset_t pos)
80
{
81
    offset_t curpos = url_ftell(pb);
82
    url_fseek(pb, pos, SEEK_SET);
83
    put_be32(pb, curpos - pos); /* rewrite size */
84
    url_fseek(pb, curpos, SEEK_SET);
85 86

    return curpos - pos;
87 88
}

89
/* Chunk offset atom */
90
static int mov_write_stco_tag(ByteIOContext *pb, MOVTrack* track)
91 92
{
    int i;
Benjamin Larsson's avatar
Benjamin Larsson committed
93
    int mode64 = 0; //   use 32 bit size variant if possible
94
    offset_t pos = url_ftell(pb);
95
    put_be32(pb, 0); /* size */
96 97 98 99 100
    if (pos > UINT32_MAX) {
        mode64 = 1;
        put_tag(pb, "co64");
    } else
        put_tag(pb, "stco");
101 102 103
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, track->entry); /* entry count */
    for (i=0; i<track->entry; i++) {
104
        if(mode64 == 1)
Baptiste Coudurier's avatar
Baptiste Coudurier committed
105
            put_be64(pb, track->cluster[i].pos);
106
        else
Baptiste Coudurier's avatar
Baptiste Coudurier committed
107
            put_be32(pb, track->cluster[i].pos);
108
    }
109
    return updateSize (pb, pos);
110 111
}

112
/* Sample size atom */
113
static int mov_write_stsz_tag(ByteIOContext *pb, MOVTrack* track)
114
{
115
    int equalChunks = 1;
116
    int i, j, entries = 0, tst = -1, oldtst = -1;
117

118
    offset_t pos = url_ftell(pb);
119
    put_be32(pb, 0); /* size */
120 121 122
    put_tag(pb, "stsz");
    put_be32(pb, 0); /* version & flags */

123
    for (i=0; i<track->entry; i++) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
124
        tst = track->cluster[i].size/track->cluster[i].entries;
125 126
        if(oldtst != -1 && tst != oldtst) {
            equalChunks = 0;
127 128
        }
        oldtst = tst;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
129
        entries += track->cluster[i].entries;
130
    }
131
    if (equalChunks) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
132
        int sSize = track->cluster[0].size/track->cluster[0].entries;
133
        put_be32(pb, sSize); // sample size
134
        put_be32(pb, entries); // sample count
135
    }
136
    else {
137 138
        put_be32(pb, 0); // sample size
        put_be32(pb, entries); // sample count
139
        for (i=0; i<track->entry; i++) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
140 141 142
            for ( j=0; j<track->cluster[i].entries; j++) {
                put_be32(pb, track->cluster[i].size /
                         track->cluster[i].entries);
143
            }
144 145
        }
    }
146
    return updateSize (pb, pos);
147 148
}

149
/* Sample to chunk atom */
150
static int mov_write_stsc_tag(ByteIOContext *pb, MOVTrack* track)
151
{
152 153
    int index = 0, oldval = -1, i;
    offset_t entryPos, curpos;
154

155
    offset_t pos = url_ftell(pb);
156
    put_be32(pb, 0); /* size */
157
    put_tag(pb, "stsc");
158
    put_be32(pb, 0); // version & flags
159
    entryPos = url_ftell(pb);
160
    put_be32(pb, track->entry); // entry count
161
    for (i=0; i<track->entry; i++) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
162
        if(oldval != track->cluster[i].samplesInChunk)
163
        {
164
            put_be32(pb, i+1); // first chunk
Baptiste Coudurier's avatar
Baptiste Coudurier committed
165
            put_be32(pb, track->cluster[i].samplesInChunk); // samples per chunk
166
            put_be32(pb, 0x1); // sample description index
Baptiste Coudurier's avatar
Baptiste Coudurier committed
167
            oldval = track->cluster[i].samplesInChunk;
168
            index++;
169 170
        }
    }
171 172
    curpos = url_ftell(pb);
    url_fseek(pb, entryPos, SEEK_SET);
173
    put_be32(pb, index); // rewrite size
174
    url_fseek(pb, curpos, SEEK_SET);
175

176
    return updateSize (pb, pos);
177 178
}

179
/* Sync sample atom */
180
static int mov_write_stss_tag(ByteIOContext *pb, MOVTrack* track)
181
{
182 183 184
    offset_t curpos, entryPos;
    int i, index = 0;
    offset_t pos = url_ftell(pb);
185
    put_be32(pb, 0); // size
186
    put_tag(pb, "stss");
187
    put_be32(pb, 0); // version & flags
188
    entryPos = url_ftell(pb);
189
    put_be32(pb, track->entry); // entry count
190
    for (i=0; i<track->entry; i++) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
191
        if(track->cluster[i].key_frame == 1) {
192 193 194 195 196 197
            put_be32(pb, i+1);
            index++;
        }
    }
    curpos = url_ftell(pb);
    url_fseek(pb, entryPos, SEEK_SET);
198
    put_be32(pb, index); // rewrite size
199 200
    url_fseek(pb, curpos, SEEK_SET);
    return updateSize (pb, pos);
201 202
}

203
static int mov_write_amr_tag(ByteIOContext *pb, MOVTrack *track)
204 205
{
    put_be32(pb, 0x11); /* size */
206 207
    if (track->mode == MODE_MOV) put_tag(pb, "samr");
    else                         put_tag(pb, "damr");
208
    put_tag(pb, "FFMP");
209
    put_byte(pb, 0); /* decoder version */
Baptiste Coudurier's avatar
Baptiste Coudurier committed
210

Baptiste Coudurier's avatar
Baptiste Coudurier committed
211
    put_be16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
212 213
    put_byte(pb, 0x00); /* Mode change period (no restriction) */
    put_byte(pb, 0x01); /* Frames per sample */
Baptiste Coudurier's avatar
Baptiste Coudurier committed
214 215 216
    return 0x11;
}

217 218 219 220 221 222 223 224
static int mov_write_enda_tag(ByteIOContext *pb)
{
    put_be32(pb, 10);
    put_tag(pb, "enda");
    put_be16(pb, 1); /* little endian */
    return 10;
}

Baptiste Coudurier's avatar
Baptiste Coudurier committed
225 226
static unsigned int descrLength(unsigned int len)
{
Michael Niedermayer's avatar
Michael Niedermayer committed
227 228 229
    int i;
    for(i=1; len>>(7*i); i++);
    return len + 1 + i;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
230 231
}

Michael Niedermayer's avatar
Michael Niedermayer committed
232
static void putDescr(ByteIOContext *pb, int tag, unsigned int size)
Baptiste Coudurier's avatar
Baptiste Coudurier committed
233
{
Michael Niedermayer's avatar
Michael Niedermayer committed
234 235 236 237 238
    int i= descrLength(size) - size - 2;
    put_byte(pb, tag);
    for(; i>0; i--)
        put_byte(pb, (size>>(7*i)) | 0x80);
    put_byte(pb, size & 0x7F);
Baptiste Coudurier's avatar
Baptiste Coudurier committed
239 240 241 242 243
}

static int mov_write_esds_tag(ByteIOContext *pb, MOVTrack* track) // Basic
{
    offset_t pos = url_ftell(pb);
244
    int decoderSpecificInfoLen = track->vosLen ? descrLength(track->vosLen):0;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291

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

    // ES descriptor
    putDescr(pb, 0x03, 3 + descrLength(13 + decoderSpecificInfoLen) +
             descrLength(1));
    put_be16(pb, track->trackID);
    put_byte(pb, 0x00);            // flags (= no flags)

    // DecoderConfig descriptor
    putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);

    // Object type indication
    put_byte(pb, codec_get_tag(ff_mov_obj_type, track->enc->codec_id));

    // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
    // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
    if(track->enc->codec_type == CODEC_TYPE_AUDIO)
        put_byte(pb, 0x15);            // flags (= Audiostream)
    else
        put_byte(pb, 0x11);            // flags (= Visualstream)

    put_byte(pb,  track->enc->rc_buffer_size>>(3+16));             // Buffersize DB (24 bits)
    put_be16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF);          // Buffersize DB

    put_be32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate));     // maxbitrate  (FIXME should be max rate in any 1 sec window)
    if(track->enc->rc_max_rate != track->enc->rc_min_rate || track->enc->rc_min_rate==0)
        put_be32(pb, 0);     // vbr
    else
        put_be32(pb, track->enc->rc_max_rate);     // avg bitrate

    if (track->vosLen)
    {
        // DecoderSpecific info descriptor
        putDescr(pb, 0x05, track->vosLen);
        put_buffer(pb, track->vosData, track->vosLen);
    }


    // SL descriptor
    putDescr(pb, 0x06, 1);
    put_byte(pb, 0x02);
    return updateSize (pb, pos);
}

292 293
static int mov_write_wave_tag(ByteIOContext *pb, MOVTrack* track)
{
294
    offset_t pos = url_ftell(pb);
295 296 297 298 299 300

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

    put_be32(pb, 12);    /* size */
    put_tag(pb, "frma");
301
    put_le32(pb, track->tag);
302

303
    if (track->enc->codec_id == CODEC_ID_AAC) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
304 305 306 307
        /* useless atom needed by mplayer, ipod, not needed by quicktime */
        put_be32(pb, 12); /* size */
        put_tag(pb, "mp4a");
        put_be32(pb, 0);
308 309 310 311
        mov_write_esds_tag(pb, track);
    } else if (track->enc->codec_id == CODEC_ID_PCM_S24LE ||
               track->enc->codec_id == CODEC_ID_PCM_S32LE) {
        mov_write_enda_tag(pb);
Baptiste Coudurier's avatar
Baptiste Coudurier committed
312
    } else if (track->enc->codec_id == CODEC_ID_AMR_NB) {
313
        mov_write_amr_tag(pb, track);
314
    }
315 316 317 318 319 320 321

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

    return updateSize (pb, pos);
}

322
static const CodecTag codec_movaudio_tags[] = {
323 324 325 326 327 328 329
    { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') },
    { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') },
    { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') },
    { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') },
    { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') },
    { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') },
    { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') },
330
    { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') },
331 332
    { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') },
    { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') },
333 334 335 336
    { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
    { CODEC_ID_PCM_S24LE, MKTAG('i', 'n', '2', '4') },
    { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
    { CODEC_ID_PCM_S32LE, MKTAG('i', 'n', '3', '2') },
337
    { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') },
338
    { CODEC_ID_NONE, 0 },
339 340
};

341
static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
342
{
343
    offset_t pos = url_ftell(pb);
344 345 346 347 348 349 350
    int vbr=  track->mode == MODE_MOV &&
        (track->enc->codec_id == CODEC_ID_AAC ||
         track->enc->codec_id == CODEC_ID_MP3 ||
         track->enc->codec_id == CODEC_ID_AMR_NB);
    int version = vbr ||
        track->enc->codec_id == CODEC_ID_PCM_S32LE ||
        track->enc->codec_id == CODEC_ID_PCM_S24LE;
351

352
    put_be32(pb, 0); /* size */
Baptiste Coudurier's avatar
Baptiste Coudurier committed
353
    put_le32(pb, track->tag); // store it byteswapped
354 355 356
    put_be32(pb, 0); /* Reserved */
    put_be16(pb, 0); /* Reserved */
    put_be16(pb, 1); /* Data-reference index, XXX  == 1 */
357

358
    /* SoundDescription */
359
    put_be16(pb, version); /* Version */
360
    put_be16(pb, 0); /* Revision level */
361 362
    put_be32(pb, 0); /* Reserved */

363
    put_be16(pb, track->mode == MODE_MOV ? track->enc->channels : 2); /* Number of channels */
364 365
    /* FIXME 8 bit for 'raw ' in mov */
    put_be16(pb, 16); /* Reserved */
366

Baptiste Coudurier's avatar
Baptiste Coudurier committed
367
    put_be16(pb, vbr ? 0xfffe : 0); /* compression ID */
368
    put_be16(pb, 0); /* packet size (= 0) */
369 370 371
    put_be16(pb, track->timescale); /* Time scale */
    put_be16(pb, 0); /* Reserved */

372
    if(version == 1) { /* SoundDescription V1 extended info */
373 374
        if (vbr)
            track->sampleSize = 0;
375
        put_be32(pb, track->enc->frame_size); /* Samples per packet */
376
        put_be32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */
377
        put_be32(pb, track->sampleSize); /* Bytes per frame */
Baptiste Coudurier's avatar
Baptiste Coudurier committed
378
        put_be32(pb, 2); /* Bytes per sample */
379 380
    }

381 382 383 384 385
    if(track->mode == MODE_MOV &&
       (track->enc->codec_id == CODEC_ID_AAC ||
        track->enc->codec_id == CODEC_ID_AMR_NB ||
        track->enc->codec_id == CODEC_ID_PCM_S24LE ||
        track->enc->codec_id == CODEC_ID_PCM_S32LE))
386
        mov_write_wave_tag(pb, track);
Baptiste Coudurier's avatar
Baptiste Coudurier committed
387 388 389
    else if(track->enc->codec_id == CODEC_ID_AAC)
        mov_write_esds_tag(pb, track);
    else if(track->enc->codec_id == CODEC_ID_AMR_NB)
390
        mov_write_amr_tag(pb, track);
Baptiste Coudurier's avatar
Baptiste Coudurier committed
391

392
    return updateSize (pb, pos);
393 394
}

395
static int mov_write_d263_tag(ByteIOContext *pb)
396 397 398 399 400 401 402 403 404
{
    put_be32(pb, 0xf); /* size */
    put_tag(pb, "d263");
    put_tag(pb, "FFMP");
    put_be16(pb, 0x0a);
    put_byte(pb, 0);
    return 0xf;
}

405 406
/* TODO: No idea about these values */
static int mov_write_svq3_tag(ByteIOContext *pb)
407
{
408 409 410 411 412 413
    put_be32(pb, 0x15);
    put_tag(pb, "SMI ");
    put_tag(pb, "SEQH");
    put_be32(pb, 0x5);
    put_be32(pb, 0xe2c0211d);
    put_be32(pb, 0xc0000000);
414
    put_byte(pb, 0);
415
    return 0x15;
416 417
}

418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433
static uint8_t *avc_find_startcode( uint8_t *p, uint8_t *end )
{
    uint8_t *a = p + 4 - ((int)p & 3);

    for( end -= 3; p < a && p < end; p++ ) {
        if( p[0] == 0 && p[1] == 0 && p[2] == 1 )
            return p;
    }

    for( end -= 3; p < end; p += 4 ) {
        uint32_t x = *(uint32_t*)p;
//      if( (x - 0x01000100) & (~x) & 0x80008000 ) // little endian
//      if( (x - 0x00010001) & (~x) & 0x00800080 ) // big endian
        if( (x - 0x01010101) & (~x) & 0x80808080 ) { // generic
            if( p[1] == 0 ) {
                if( p[0] == 0 && p[2] == 1 )
Baptiste Coudurier's avatar
Baptiste Coudurier committed
434
                    return p-1;
435
                if( p[2] == 0 && p[3] == 1 )
Baptiste Coudurier's avatar
Baptiste Coudurier committed
436
                    return p;
437 438 439
            }
            if( p[3] == 0 ) {
                if( p[2] == 0 && p[4] == 1 )
Baptiste Coudurier's avatar
Baptiste Coudurier committed
440
                    return p+1;
441
                if( p[4] == 0 && p[5] == 1 )
Baptiste Coudurier's avatar
Baptiste Coudurier committed
442
                    return p+2;
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
            }
        }
    }

    for( end += 3; p < end; p++ ) {
        if( p[0] == 0 && p[1] == 0 && p[2] == 1 )
            return p;
    }

    return end + 3;
}

static void avc_parse_nal_units(uint8_t **buf, int *size)
{
    ByteIOContext pb;
    uint8_t *p = *buf;
    uint8_t *end = p + *size;
    uint8_t *nal_start, *nal_end;

    url_open_dyn_buf(&pb);
    nal_start = avc_find_startcode(p, end);
    while (nal_start < end) {
        while(!*(nal_start++));
        nal_end = avc_find_startcode(nal_start, end);
        put_be32(&pb, nal_end - nal_start);
        put_buffer(&pb, nal_start, nal_end - nal_start);
        nal_start = nal_end;
    }
    av_freep(buf);
    *size = url_close_dyn_buf(&pb, buf);
}

static int mov_write_avcc_tag(ByteIOContext *pb, MOVTrack *track)
{
    offset_t pos = url_ftell(pb);

    put_be32(pb, 0);
    put_tag(pb, "avcC");
    if (track->vosLen > 6) {
        /* check for h264 start code */
        if (BE_32(track->vosData) == 0x00000001) {
            uint8_t *buf, *end;
            uint32_t sps_size=0, pps_size=0;
            uint8_t *sps=0, *pps=0;

            avc_parse_nal_units(&track->vosData, &track->vosLen);
            buf = track->vosData;
            end = track->vosData + track->vosLen;

            /* look for sps and pps */
            while (buf < end) {
                unsigned int size;
                uint8_t nal_type;
                size = BE_32(buf);
                nal_type = buf[4] & 0x1f;
                if (nal_type == 7) { /* SPS */
                    sps = buf + 4;
                    sps_size = size;
                } else if (nal_type == 8) { /* PPS */
                    pps = buf + 4;
                    pps_size = size;
                }
                buf += size + 4;
            }
            assert(sps);
            assert(pps);
509 510 511 512 513 514 515 516

            put_byte(pb, 1); /* version */
            put_byte(pb, sps[1]); /* profile */
            put_byte(pb, sps[2]); /* profile compat */
            put_byte(pb, sps[3]); /* level */
            put_byte(pb, 0xff); /* 6 bits reserved (111111) + 2 bits nal size length - 1 (11) */
            put_byte(pb, 0xe1); /* 3 bits reserved (111) + 5 bits number of sps (00001) */

517 518 519 520 521 522 523 524 525 526 527 528
            put_be16(pb, sps_size);
            put_buffer(pb, sps, sps_size);
            put_byte(pb, 1); /* number of pps */
            put_be16(pb, pps_size);
            put_buffer(pb, pps, pps_size);
        } else {
            put_buffer(pb, track->vosData, track->vosLen);
        }
    }
    return updateSize(pb, pos);
}

529
static const CodecTag codec_movvideo_tags[] = {
530 531 532 533
    { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') },
    { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') },
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
    { CODEC_ID_H263, MKTAG('s', '2', '6', '3') },
534
    { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
535 536 537 538 539 540 541
    /* special handling in mov_find_video_codec_tag */
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL */
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC */
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL */
    { CODEC_ID_NONE, 0 },
542 543
};

Baptiste Coudurier's avatar
Baptiste Coudurier committed
544
static int mov_find_video_codec_tag(AVFormatContext *s, MOVTrack *track)
545
{
Baptiste Coudurier's avatar
Baptiste Coudurier committed
546
    int tag = track->enc->codec_tag;
547 548 549 550 551 552 553 554 555 556 557 558
    if (!tag) {
        if (track->enc->codec_id == CODEC_ID_DVVIDEO) {
            if (track->enc->height == 480) { /* NTSC */
                if (track->enc->pix_fmt == PIX_FMT_YUV422P)
                    tag = MKTAG('d', 'v', '5', 'n');
                else
                    tag = MKTAG('d', 'v', 'c', ' ');
            } else { /* assume PAL */
                if (track->enc->pix_fmt == PIX_FMT_YUV422P)
                    tag = MKTAG('d', 'v', '5', 'p');
                else if (track->enc->pix_fmt == PIX_FMT_YUV420P)
                    tag = MKTAG('d', 'v', 'c', 'p');
Baptiste Coudurier's avatar
Baptiste Coudurier committed
559 560
                else
                    tag = MKTAG('d', 'v', 'p', 'p');
561 562 563 564 565 566
            }
        } else {
            tag = codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
        }
    }
    // if no mac fcc found, try with Microsoft tags
Baptiste Coudurier's avatar
Baptiste Coudurier committed
567
    if (!tag) {
568
        tag = codec_get_tag(codec_bmp_tags, track->enc->codec_id);
Baptiste Coudurier's avatar
Baptiste Coudurier committed
569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590
        if (tag) {
            av_log(s, AV_LOG_INFO, "Warning, using MS style video codec tag, the file may be unplayable!\n");
        }
    }
    assert(tag);
    return tag;
}

static int mov_find_audio_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag = track->enc->codec_tag;
    if (!tag) {
        tag = codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
    }
    // if no mac fcc found, try with Microsoft tags
    if (!tag) {
        int ms_tag = codec_get_tag(codec_wav_tags, track->enc->codec_id);
        if (ms_tag) {
            tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
            av_log(s, AV_LOG_INFO, "Warning, using MS style audio codec tag, the file may be unplayable!\n");
        }
    }
591 592 593 594
    assert(tag);
    return tag;
}

595
static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track)
596
{
597
    offset_t pos = url_ftell(pb);
598
    char compressor_name[32];
599

600
    put_be32(pb, 0); /* size */
Baptiste Coudurier's avatar
Baptiste Coudurier committed
601
    put_le32(pb, track->tag); // store it byteswapped
602 603 604 605
    put_be32(pb, 0); /* Reserved */
    put_be16(pb, 0); /* Reserved */
    put_be16(pb, 1); /* Data-reference index */

606 607
    put_be16(pb, 0); /* Codec stream version */
    put_be16(pb, 0); /* Codec stream revision (=0) */
608
    if (track->mode == MODE_MOV) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
609 610 611 612 613 614 615 616
        put_tag(pb, "FFMP"); /* Vendor */
        if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
            put_be32(pb, 0); /* Temporal Quality */
            put_be32(pb, 0x400); /* Spatial Quality = lossless*/
        } else {
            put_be32(pb, 0x200); /* Temporal Quality = normal */
            put_be32(pb, 0x200); /* Spatial Quality = normal */
        }
617 618 619 620 621
    } else {
        put_be32(pb, 0); /* Reserved */
        put_be32(pb, 0); /* Reserved */
        put_be32(pb, 0); /* Reserved */
    }
622 623
    put_be16(pb, track->enc->width); /* Video width */
    put_be16(pb, track->enc->height); /* Video height */
624 625
    put_be32(pb, 0x00480000); /* Horizontal resolution 72dpi */
    put_be32(pb, 0x00480000); /* Vertical resolution 72dpi */
626 627
    put_be32(pb, 0); /* Data size (= 0) */
    put_be16(pb, 1); /* Frame count (= 1) */
628

629
    memset(compressor_name,0,32);
630 631
    /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
    if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
632
        strncpy(compressor_name,track->enc->codec->name,31);
633
    put_byte(pb, strlen(compressor_name));
634
    put_buffer(pb, compressor_name, 31);
635

636 637 638 639 640 641 642
    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)
643
        mov_write_svq3_tag(pb);
644 645
    else if(track->enc->codec_id == CODEC_ID_H264)
        mov_write_avcc_tag(pb, track);
646 647

    return updateSize (pb, pos);
648 649
}

650
static int mov_write_stsd_tag(ByteIOContext *pb, MOVTrack* track)
651
{
652
    offset_t pos = url_ftell(pb);
653 654 655 656
    put_be32(pb, 0); /* size */
    put_tag(pb, "stsd");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, 1); /* entry count */
657 658 659 660
    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);
661
    return updateSize(pb, pos);
662 663
}

664 665 666 667 668 669 670 671 672
static int mov_write_ctts_tag(ByteIOContext *pb, MOVTrack* track)
{
    Time2Sample *ctts_entries;
    uint32_t entries = 0;
    uint32_t atom_size;
    int i;

    ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
    ctts_entries[0].count = 1;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
673
    ctts_entries[0].duration = track->cluster[0].cts;
674
    for (i=1; i<track->entry; i++) {
Baptiste Coudurier's avatar
Baptiste Coudurier committed
675
        if (track->cluster[i].cts == ctts_entries[entries].duration) {
676 677 678
            ctts_entries[entries].count++; /* compress */
        } else {
            entries++;
Baptiste Coudurier's avatar
Baptiste Coudurier committed
679
            ctts_entries[entries].duration = track->cluster[i].cts;
680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696
            ctts_entries[entries].count = 1;
        }
    }
    entries++; /* last one */
    atom_size = 16 + (entries * 8);
    put_be32(pb, atom_size); /* size */
    put_tag(pb, "ctts");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, entries); /* entry count */
    for (i=0; i<entries; i++) {
        put_be32(pb, ctts_entries[i].count);
        put_be32(pb, ctts_entries[i].duration);
    }
    av_free(ctts_entries);
    return atom_size;
}

Michael Niedermayer's avatar
Michael Niedermayer committed
697
/* TODO: */
698
/* Time to sample atom */
699
static int mov_write_stts_tag(ByteIOContext *pb, MOVTrack* track)
700 701 702 703 704 705
{
    put_be32(pb, 0x18); /* size */
    put_tag(pb, "stts");
    put_be32(pb, 0); /* version & flags */
    put_be32(pb, 1); /* entry count */

706 707
    put_be32(pb, track->sampleCount); /* sample count */
    put_be32(pb, track->sampleDuration); /* sample duration */
708 709 710
    return 0x18;
}

711
static int mov_write_dref_tag(ByteIOContext *pb)
712 713 714 715 716 717 718 719 720 721 722 723 724
{
    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;
}

725
static int mov_write_stbl_tag(ByteIOContext *pb, MOVTrack* track)
726
{
727
    offset_t pos = url_ftell(pb);
728 729
    put_be32(pb, 0); /* size */
    put_tag(pb, "stbl");
730 731
    mov_write_stsd_tag(pb, track);
    mov_write_stts_tag(pb, track);
732
    if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
733
        track->hasKeyframes < track->entry)
734
        mov_write_stss_tag(pb, track);
735 736 737
    if (track->enc->codec_type == CODEC_TYPE_VIDEO &&
        track->hasBframes)
        mov_write_ctts_tag(pb, track);
738 739 740 741
    mov_write_stsc_tag(pb, track);
    mov_write_stsz_tag(pb, track);
    mov_write_stco_tag(pb, track);
    return updateSize(pb, pos);
742 743
}

744
static int mov_write_dinf_tag(ByteIOContext *pb)
745
{
746
    offset_t pos = url_ftell(pb);
747 748
    put_be32(pb, 0); /* size */
    put_tag(pb, "dinf");
749 750
    mov_write_dref_tag(pb);
    return updateSize(pb, pos);
751 752
}

753
static int mov_write_smhd_tag(ByteIOContext *pb)
754 755 756 757 758 759 760 761 762
{
    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;
}

763
static int mov_write_vmhd_tag(ByteIOContext *pb)
764 765 766 767 768 769 770 771
{
    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;
}

772
static int mov_write_hdlr_tag(ByteIOContext *pb, MOVTrack* track)
773
{
774
    const char *descr, *hdlr, *hdlr_type;
775
    offset_t pos = url_ftell(pb);
776

777
    if (!track) { /* no media --> data handler */
778 779 780
        hdlr = "dhlr";
        hdlr_type = "url ";
        descr = "DataHandler";
781
    } else {
782 783 784 785 786 787 788 789
        hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
        if (track->enc->codec_type == CODEC_TYPE_VIDEO) {
            hdlr_type = "vide";
            descr = "VideoHandler";
        } else {
            hdlr_type = "soun";
            descr = "SoundHandler";
        }
790
    }
791

792
    put_be32(pb, 0); /* size */
793 794
    put_tag(pb, "hdlr");
    put_be32(pb, 0); /* Version & flags */
795
    put_buffer(pb, hdlr, 4); /* handler */
796
    put_tag(pb, hdlr_type); /* handler type */
797 798 799
    put_be32(pb ,0); /* reserved */
    put_be32(pb ,0); /* reserved */
    put_be32(pb ,0); /* reserved */
800 801 802 803 804 805 806
    put_byte(pb, strlen(descr)); /* string counter */
    put_buffer(pb, descr, strlen(descr)); /* handler description */
    return updateSize(pb, pos);
}

static int mov_write_minf_tag(ByteIOContext *pb, MOVTrack* track)
{
807
    offset_t pos = url_ftell(pb);
808 809
    put_be32(pb, 0); /* size */
    put_tag(pb, "minf");
810
    if(track->enc->codec_type == CODEC_TYPE_VIDEO)
811
        mov_write_vmhd_tag(pb);
812
    else
813 814 815 816 817
        mov_write_smhd_tag(pb);
    if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
        mov_write_hdlr_tag(pb, NULL);
    mov_write_dinf_tag(pb);
    mov_write_stbl_tag(pb, track);
818
    return updateSize(pb, pos);
819 820
}

821
static int mov_write_mdhd_tag(ByteIOContext *pb, MOVTrack* track)
822
{
823 824 825
    int version = track->trackDuration < INT32_MAX ? 0 : 1;

    (version == 1) ? put_be32(pb, 44) : put_be32(pb, 32); /* size */
826
    put_tag(pb, "mdhd");
827 828 829 830 831 832 833 834 835
    put_byte(pb, version);
    put_be24(pb, 0); /* flags */
    if (version == 1) {
        put_be64(pb, track->time);
        put_be64(pb, track->time);
    } else {
        put_be32(pb, track->time); /* creation time */
        put_be32(pb, track->time); /* modification time */
    }
836
    put_be32(pb, track->timescale); /* time scale (sample rate for audio) */
837
    (version == 1) ? put_be64(pb, track->trackDuration) : put_be32(pb, track->trackDuration); /* duration */
838
    put_be16(pb, track->language); /* language */
839 840 841 842
    put_be16(pb, 0); /* reserved (quality) */
    return 32;
}

843
static int mov_write_mdia_tag(ByteIOContext *pb, MOVTrack* track)
844
{
845
    offset_t pos = url_ftell(pb);
846 847
    put_be32(pb, 0); /* size */
    put_tag(pb, "mdia");
848 849 850 851
    mov_write_mdhd_tag(pb, track);
    mov_write_hdlr_tag(pb, track);
    mov_write_minf_tag(pb, track);
    return updateSize(pb, pos);
852 853
}

854
static int mov_write_tkhd_tag(ByteIOContext *pb, MOVTrack* track)
Michael Niedermayer's avatar