mp4.c 136 KB
Newer Older
1 2 3
/*****************************************************************************
 * mp4.c : MP4 file input module for vlc
 *****************************************************************************
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
4
 * Copyright (C) 2001-2004, 2010 VLC authors and VideoLAN
5
 *
6
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7
 *
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
8 9 10
 * This program 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 2.1 of the License, or
11
 * (at your option) any later version.
12
 *
13 14
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
15 16
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
17
 *
Jean-Baptiste Kempf's avatar
LGPL  
Jean-Baptiste Kempf committed
18 19 20
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 22 23 24 25 26
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/

27 28 29 30
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

31
#include <vlc_common.h>
32
#include <vlc_plugin.h>
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
33

Clément Stenac's avatar
Clément Stenac committed
34
#include <vlc_demux.h>
35 36
#include <vlc_charset.h>                           /* EnsureUTF8 */
#include <vlc_meta.h>                              /* vlc_meta_t, vlc_meta_ */
37
#include <vlc_input.h>
38
#include <assert.h>
39

40
#include "libmp4.h"
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
41
#include "id3genres.h"                             /* for ATOM_gnre */
42 43 44 45

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
46 47
static int  Open ( vlc_object_t * );
static void Close( vlc_object_t * );
48

49 50 51 52
vlc_module_begin ()
    set_category( CAT_INPUT )
    set_subcategory( SUBCAT_INPUT_DEMUX )
    set_description( N_("MP4 stream demuxer") )
53
    set_shortname( N_("MP4") )
54
    set_capability( "demux", 240 )
55 56
    set_callbacks( Open, Close )
vlc_module_end ()
57

58 59 60
/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
61
static int   Demux   ( demux_t * );
62
static int   DemuxRef( demux_t *p_demux ){ (void)p_demux; return 0;}
63
static int   DemuxFrg( demux_t * );
64 65
static int   Seek    ( demux_t *, mtime_t );
static int   Control ( demux_t *, int, va_list );
66

67 68 69 70 71 72
struct demux_sys_t
{
    MP4_Box_t    *p_root;      /* container for the whole file */

    mtime_t      i_pcr;

73 74 75 76 77 78
    uint64_t     i_time;         /* time position of the presentation
                                  * in movie timescale */
    uint64_t     i_timescale;    /* movie time scale */
    uint64_t     i_duration;     /* movie duration */
    unsigned int i_tracks;       /* number of tracks */
    mp4_track_t  *track;         /* array of track */
79
    float        f_fps;          /* number of frame per seconds */
80

81 82
    bool         b_fragmented;   /* fMP4 */

83 84
    /* */
    MP4_Box_t    *p_tref_chap;
85 86 87

    /* */
    input_title_t *p_title;
88 89
};

90
/*****************************************************************************
91
 * Declaration of local function
92
 *****************************************************************************/
93
static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *, bool b_force_enable );
94
static int MP4_frg_TrackCreate( demux_t *, mp4_track_t *, MP4_Box_t *);
Christophe Mutricy's avatar
Christophe Mutricy committed
95
static void MP4_TrackDestroy(  mp4_track_t * );
96

Laurent Aimar's avatar
Laurent Aimar committed
97 98
static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
99

Laurent Aimar's avatar
Laurent Aimar committed
100
static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
101

Laurent Aimar's avatar
Laurent Aimar committed
102
static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
103 104
static int      MP4_TrackSampleSize( mp4_track_t *, int * );
static int      MP4_TrackNextSample( demux_t *, mp4_track_t *, int );
Laurent Aimar's avatar
Laurent Aimar committed
105
static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
Laurent Aimar's avatar
Laurent Aimar committed
106

107
static void     MP4_UpdateSeekpoint( demux_t * );
108
static const char *MP4_ConvertMacCode( uint16_t );
109

110
/* Return time in microsecond of a track */
Laurent Aimar's avatar
Laurent Aimar committed
111
static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
Laurent Aimar's avatar
Laurent Aimar committed
112
{
113 114 115 116 117 118
    demux_sys_t *p_sys = p_demux->p_sys;
    mp4_chunk_t chunk;
    if( p_sys->b_fragmented )
        chunk = *p_track->cchunk;
    else
        chunk = p_track->chunk[p_track->i_chunk];
119 120 121 122

    unsigned int i_index = 0;
    unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
    int64_t i_dts = chunk.i_first_dts;
Laurent Aimar's avatar
Laurent Aimar committed
123 124 125

    while( i_sample > 0 )
    {
126
        if( i_sample > chunk.p_sample_count_dts[i_index] )
Laurent Aimar's avatar
Laurent Aimar committed
127
        {
128 129 130
            i_dts += chunk.p_sample_count_dts[i_index] *
                chunk.p_sample_delta_dts[i_index];
            i_sample -= chunk.p_sample_count_dts[i_index];
Laurent Aimar's avatar
Laurent Aimar committed
131 132 133 134
            i_index++;
        }
        else
        {
135
            i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
Laurent Aimar's avatar
Laurent Aimar committed
136 137 138 139
            break;
        }
    }

140 141 142
    /* now handle elst */
    if( p_track->p_elst )
    {
Laurent Aimar's avatar
Laurent Aimar committed
143
        demux_sys_t         *p_sys = p_demux->p_sys;
144 145 146 147 148 149 150 151 152 153 154
        MP4_Box_data_elst_t *elst = p_track->p_elst->data.p_elst;

        /* convert to offset */
        if( ( elst->i_media_rate_integer[p_track->i_elst] > 0 ||
              elst->i_media_rate_fraction[p_track->i_elst] > 0 ) &&
            elst->i_media_time[p_track->i_elst] > 0 )
        {
            i_dts -= elst->i_media_time[p_track->i_elst];
        }

        /* add i_elst_time */
155 156
        i_dts += p_track->i_elst_time * p_track->i_timescale /
            p_sys->i_timescale;
157 158 159 160

        if( i_dts < 0 ) i_dts = 0;
    }

161
    return CLOCK_FREQ * i_dts / p_track->i_timescale;
Laurent Aimar's avatar
Laurent Aimar committed
162
}
163

164
static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
Laurent Aimar's avatar
Laurent Aimar committed
165
{
166 167 168 169 170 171 172
    demux_sys_t *p_sys = p_demux->p_sys;
    mp4_chunk_t *ck;
    if( p_sys->b_fragmented )
        ck = p_track->cchunk;
    else
        ck = &p_track->chunk[p_track->i_chunk];

Laurent Aimar's avatar
Laurent Aimar committed
173 174 175 176 177 178 179 180 181
    unsigned int i_index = 0;
    unsigned int i_sample = p_track->i_sample - ck->i_sample_first;

    if( ck->p_sample_count_pts == NULL || ck->p_sample_offset_pts == NULL )
        return -1;

    for( i_index = 0;; i_index++ )
    {
        if( i_sample < ck->p_sample_count_pts[i_index] )
182
            return ck->p_sample_offset_pts[i_index] * CLOCK_FREQ /
183
                   (int64_t)p_track->i_timescale;
Laurent Aimar's avatar
Laurent Aimar committed
184 185 186 187 188

        i_sample -= ck->p_sample_count_pts[i_index];
    }
}

Laurent Aimar's avatar
Laurent Aimar committed
189 190
static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
{
191
    return CLOCK_FREQ * p_sys->i_time / p_sys->i_timescale;
Laurent Aimar's avatar
Laurent Aimar committed
192
}
193

194 195
static void LoadChapter( demux_t  *p_demux );

196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218
static int LoadInitFrag( demux_t *p_demux, const bool b_smooth )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    if( b_smooth ) /* Smooth Streaming */
    {
        if( ( p_sys->p_root = MP4_BoxGetSmooBox( p_demux->s ) ) == NULL )
        {
            goto LoadInitFragError;
        }
        else
        {
            MP4_Box_t *p_smoo = MP4_BoxGet( p_sys->p_root, "uuid" );
            if( !p_smoo || CmpUUID( &p_smoo->i_uuid, &SmooBoxUUID ) )
                goto LoadInitFragError;
            /* Get number of tracks */
            p_sys->i_tracks = 0;
            for( int i = 0; i < 3; i++ )
            {
                MP4_Box_t *p_stra = MP4_BoxGet( p_smoo, "uuid[%d]", i );
                if( p_stra && p_stra->data.p_stra->i_track_ID )
                    p_sys->i_tracks++;
                /* Get timescale and duration of the video track; */
219
                if( p_sys->i_timescale == 0 )
220 221 222
                {
                    p_sys->i_timescale = p_stra->data.p_stra->i_timescale;
                    p_sys->i_duration = p_stra->data.p_stra->i_duration;
223 224 225 226 227
                    if( p_sys->i_timescale == 0 )
                    {
                        msg_Err( p_demux, "bad timescale" );
                        goto LoadInitFragError;
                    }
228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292
                }
            }
        }
    }
    else
    {
        /* Load all boxes ( except raw data ) */
        if( ( p_sys->p_root = MP4_BoxGetRoot( p_demux->s ) ) == NULL )
        {
            goto LoadInitFragError;
        }
    }
    return VLC_SUCCESS;

LoadInitFragError:
    msg_Warn( p_demux, "MP4 plugin discarded (not a valid initialization chunk)" );
    return VLC_EGENERIC;
}

static int InitTracks( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
    if( p_sys->track == NULL )
        return VLC_EGENERIC;

    if( p_sys->b_fragmented )
    {
        mp4_track_t *p_track;
        for( uint16_t i = 0; i < p_sys->i_tracks; i++ )
        {
            p_track = &p_sys->track[i];
            p_track->cchunk = calloc( 1, sizeof( mp4_chunk_t ) );
            if( unlikely( !p_track->cchunk ) )
            {
                free( p_sys->track );
                return VLC_EGENERIC;
            }
        }
    }
    return VLC_SUCCESS;
}

static void CreateTracksFromSmooBox( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    MP4_Box_t *p_smoo = MP4_BoxGet( p_sys->p_root, "uuid" );
    mp4_track_t *p_track;
    int j = 0;
    for( int i = 0; i < 3; i++ )
    {
        MP4_Box_t *p_stra = MP4_BoxGet( p_smoo, "uuid[%d]", i );
        if( !p_stra || p_stra->data.p_stra->i_track_ID == 0 )
            continue;
        else
        {
            p_track = &p_sys->track[j]; j++;
            MP4_frg_TrackCreate( p_demux, p_track, p_stra );
            p_track->p_es = es_out_Add( p_demux->out, &p_track->fmt );
        }
    }
}

293
/*****************************************************************************
294
 * Open: check file and initializes MP4 structures
295
 *****************************************************************************/
296
static int Open( vlc_object_t * p_this )
297
{
Laurent Aimar's avatar
Laurent Aimar committed
298
    demux_t  *p_demux = (demux_t *)p_this;
299
    demux_sys_t     *p_sys;
300

Christophe Mutricy's avatar
Christophe Mutricy committed
301
    const uint8_t   *p_peek;
302

303
    MP4_Box_t       *p_ftyp;
304
    MP4_Box_t       *p_rmra;
305 306
    MP4_Box_t       *p_mvhd;
    MP4_Box_t       *p_trak;
307

308
    unsigned int    i;
309
    bool      b_seekable;
310
    bool      b_enabled_es;
311

312
    /* A little test to see if it could be a mp4 */
313
    if( stream_Peek( p_demux->s, &p_peek, 11 ) < 11 ) return VLC_EGENERIC;
314

315
    switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
316
    {
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
317 318 319 320 321 322 323 324
        case ATOM_moov:
        case ATOM_foov:
        case ATOM_moof:
        case ATOM_mdat:
        case ATOM_udta:
        case ATOM_free:
        case ATOM_skip:
        case ATOM_wide:
325
        case ATOM_uuid:
326
        case VLC_FOURCC( 'p', 'n', 'o', 't' ):
327
            break;
328 329 330 331 332
        case ATOM_ftyp:
            /* We don't yet support f4v, but avformat does. */
            if( p_peek[8] == 'f' && p_peek[9] == '4' && p_peek[10] == 'v' )
                return VLC_EGENERIC;
            break;
333
         default:
334
            return VLC_EGENERIC;
335
    }
336

337
    /* I need to seek */
338
    stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_seekable );
339
    if( !b_seekable )
340
    {
341
        msg_Warn( p_demux, "MP4 plugin discarded (not seekable)" );
342
        return VLC_EGENERIC;
343
    }
344

345
    /*Set exported functions */
Laurent Aimar's avatar
Laurent Aimar committed
346 347
    p_demux->pf_demux = Demux;
    p_demux->pf_control = Control;
348 349

    /* create our structure that will contains all data */
Rémi Duraffort's avatar
Rémi Duraffort committed
350
    p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
351

352 353 354 355 356 357 358 359 360 361 362 363
    /* Is it Smooth Streaming? */
    bool b_smooth = false;
    if( stream_Peek( p_demux->s, &p_peek, 24 ) < 24 ) return VLC_EGENERIC;
    if( !CmpUUID( (UUID_t *)(p_peek + 8), &SmooBoxUUID ) )
    {
        b_smooth = true;
        p_sys->b_fragmented = true;
    }

    if( LoadInitFrag( p_demux, b_smooth ) != VLC_SUCCESS )
        goto error;

364
    if( MP4_BoxCount( p_sys->p_root, "/moov/mvex" ) > 0 )
365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391
    {
        p_sys->b_fragmented = true;
    }
    if( p_sys->b_fragmented )
    {
        p_demux->pf_demux = DemuxFrg;
    }

    stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &b_seekable );
    if( b_smooth )
    {
        if( InitTracks( p_demux ) != VLC_SUCCESS )
            goto error;
        CreateTracksFromSmooBox( p_demux );
        return VLC_SUCCESS;
    }
    else if( p_sys->b_fragmented && b_seekable )
    {
        /* We are not yet able to demux a fragmented MP4 file, using the 'mfra'
         * box. So if STREAM_CAN_FASTSEEK is true, we're assuming we've got such
         * a file, and we let avformat do the job. */
        msg_Warn( p_demux, "MP4 plugin discarded "\
                "(fast-seekable and fragmented, let avformat demux it)" );
        stream_Seek( p_demux->s, 0 ); /* rewind, for other demux */
        goto error;
    }
    else if( !p_sys->b_fragmented && !b_seekable )
392
    {
393 394
        msg_Warn( p_demux, "MP4 plugin discarded (not fast-seekable)" );
        stream_Seek( p_demux->s, 0 ); /* rewind, for other demux */
Laurent Aimar's avatar
Laurent Aimar committed
395
        goto error;
396 397
    }

Laurent Aimar's avatar
Laurent Aimar committed
398
    MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
399

400
    if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
401 402 403
    {
        switch( p_ftyp->data.p_ftyp->i_major_brand )
        {
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
404
            case( ATOM_isom ):
Laurent Aimar's avatar
Laurent Aimar committed
405
                msg_Dbg( p_demux,
406 407
                         "ISO Media file (isom) version %d.",
                         p_ftyp->data.p_ftyp->i_minor_version );
408
                break;
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
409
            case( ATOM_3gp4 ):
410 411 412 413 414 415 416 417 418 419 420 421 422
            case( VLC_FOURCC( '3', 'g', 'p', '5' ) ):
            case( VLC_FOURCC( '3', 'g', 'p', '6' ) ):
            case( VLC_FOURCC( '3', 'g', 'p', '7' ) ):
                msg_Dbg( p_demux, "3GPP Media file Release: %c",
#ifdef WORDS_BIGENDIAN
                        p_ftyp->data.p_ftyp->i_major_brand
#else
                        p_ftyp->data.p_ftyp->i_major_brand >> 24
#endif
                        );
                break;
            case( VLC_FOURCC( 'q', 't', ' ', ' ') ):
                msg_Dbg( p_demux, "Apple QuickTime file" );
423
                break;
424 425 426
            case( VLC_FOURCC( 'i', 's', 'm', 'l') ):
                msg_Dbg( p_demux, "PIFF (= isml = fMP4) file" );
                break;
427
            default:
Laurent Aimar's avatar
Laurent Aimar committed
428
                msg_Dbg( p_demux,
429 430
                         "unrecognized major file specification (%4.4s).",
                          (char*)&p_ftyp->data.p_ftyp->i_major_brand );
431 432 433 434 435
                break;
        }
    }
    else
    {
Laurent Aimar's avatar
Laurent Aimar committed
436
        msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
437 438 439
    }

    /* the file need to have one moov box */
440
    if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
441
    {
442
        MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
443 444 445

        if( !p_foov )
        {
446 447
            msg_Err( p_demux, "MP4 plugin discarded (no moov,foov,moof box)" );
            goto error;
448 449
        }
        /* we have a free box as a moov, rename it */
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
450
        p_foov->i_type = ATOM_moov;
451 452
    }

453
    if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
454 455 456 457
    {
        int        i_count = MP4_BoxCount( p_rmra, "rmda" );
        int        i;

Laurent Aimar's avatar
Laurent Aimar committed
458
        msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
459

460
        input_thread_t *p_input = demux_GetParentInput( p_demux );
461
        input_item_t *p_current = input_GetItem( p_input );
462

463 464
        input_item_node_t *p_subitems = input_item_node_Create( p_current );

465
        for( i = 0; i < i_count; i++ )
466
        {
467 468 469
            MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
            char      *psz_ref;
            uint32_t  i_ref_type;
470

471
            if( !p_rdrf || !( psz_ref = strdup( p_rdrf->data.p_rdrf->psz_ref ) ) )
472
            {
473 474 475
                continue;
            }
            i_ref_type = p_rdrf->data.p_rdrf->i_ref_type;
476

477 478 479 480 481 482
            msg_Dbg( p_demux, "new ref=`%s' type=%4.4s",
                     psz_ref, (char*)&i_ref_type );

            if( i_ref_type == VLC_FOURCC( 'u', 'r', 'l', ' ' ) )
            {
                if( strstr( psz_ref, "qt5gateQT" ) )
483
                {
484
                    msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
485 486
                    continue;
                }
487 488
                if( !strncmp( psz_ref, "http://", 7 ) ||
                    !strncmp( psz_ref, "rtsp://", 7 ) )
489
                {
490
                    ;
491 492 493
                }
                else
                {
494
                    char *psz_absolute;
495
                    char *psz_path = strdup( p_demux->psz_location );
496 497 498 499
                    char *end = strrchr( psz_path, '/' );
                    if( end ) end[1] = '\0';
                    else *psz_path = '\0';

Christophe Mutricy's avatar
Christophe Mutricy committed
500 501
                    if( asprintf( &psz_absolute, "%s://%s%s",
                                  p_demux->psz_access, psz_path, psz_ref ) < 0 )
Rémi Duraffort's avatar
Rémi Duraffort committed
502 503 504
                    {
                        free( psz_ref );
                        free( psz_path );
François Cartegnie's avatar
François Cartegnie committed
505
                        input_item_node_Delete( p_subitems );
Rémi Duraffort's avatar
Rémi Duraffort committed
506
                        vlc_object_release( p_input) ;
Christophe Mutricy's avatar
Christophe Mutricy committed
507
                        return VLC_ENOMEM;
Rémi Duraffort's avatar
Rémi Duraffort committed
508
                    }
509 510 511 512

                    free( psz_ref );
                    psz_ref = psz_absolute;
                    free( psz_path );
513
                }
514
                msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
515 516 517 518
                input_item_t *p_item = input_item_New( psz_ref, NULL );
                input_item_CopyOptions( p_current, p_item );
                input_item_node_AppendItem( p_subitems, p_item );
                vlc_gc_decref( p_item );
519
            }
520
            else
521
            {
522 523
                msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
                         (char*)&p_rdrf->data.p_rdrf->i_ref_type );
524
            }
525
            free( psz_ref );
526
        }
527
        input_item_node_PostAndDelete( p_subitems );
528
        vlc_object_release( p_input );
529 530
    }

531
    if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
532
    {
533 534
        if( !p_rmra )
        {
Laurent Aimar's avatar
Laurent Aimar committed
535
            msg_Err( p_demux, "cannot find /moov/mvhd" );
536
            goto error;
537 538 539
        }
        else
        {
Laurent Aimar's avatar
Laurent Aimar committed
540 541
            msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
            p_demux->pf_demux = DemuxRef;
542
            return VLC_SUCCESS;
543
        }
544 545 546
    }
    else
    {
547
        p_sys->i_timescale = p_mvhd->data.p_mvhd->i_timescale;
548 549 550 551 552
        if( p_sys->i_timescale == 0 )
        {
            msg_Err( p_this, "bad timescale" );
            goto error;
        }
553
        p_sys->i_duration = p_mvhd->data.p_mvhd->i_duration;
554
    }
555

556
    if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
557
    {
Laurent Aimar's avatar
Laurent Aimar committed
558
        msg_Err( p_demux, "cannot find any /moov/trak" );
559
        goto error;
560
    }
561
    msg_Dbg( p_demux, "found %d track%c",
562 563
                        p_sys->i_tracks,
                        p_sys->i_tracks ? 's':' ' );
564

565
    if( InitTracks( p_demux ) != VLC_SUCCESS )
566
        goto error;
567

568 569
    /* Search the first chap reference (like quicktime) and
     * check that at least 1 stream is enabled */
570
    p_sys->p_tref_chap = NULL;
571
    b_enabled_es = false;
572 573 574 575
    for( i = 0; i < p_sys->i_tracks; i++ )
    {
        MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );

576 577 578 579 580 581 582 583

        MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
        if( p_tkhd && (p_tkhd->data.p_tkhd->i_flags&MP4_TRACK_ENABLED) )
            b_enabled_es = true;

        MP4_Box_t *p_chap = MP4_BoxGet( p_trak, "tref/chap", i );
        if( p_chap && p_chap->data.p_tref_generic->i_entry_count > 0 && !p_sys->p_tref_chap )
            p_sys->p_tref_chap = p_chap;
584 585
    }

Rémi Denis-Courmont's avatar
Typos  
Rémi Denis-Courmont committed
586
    /* now process each track and extract all useful information */
587
    for( i = 0; i < p_sys->i_tracks; i++ )
588
    {
589
        p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
590
        MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
591

592
        if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
593
        {
Laurent Aimar's avatar
Laurent Aimar committed
594
            const char *psz_cat;
595
            switch( p_sys->track[i].fmt.i_cat )
596 597 598 599 600 601 602
            {
                case( VIDEO_ES ):
                    psz_cat = "video";
                    break;
                case( AUDIO_ES ):
                    psz_cat = "audio";
                    break;
603 604 605 606
                case( SPU_ES ):
                    psz_cat = "subtitle";
                    break;

607
                default:
608
                    psz_cat = "unknown";
609 610
                    break;
            }
611

Laurent Aimar's avatar
Laurent Aimar committed
612
            msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
613 614 615 616
                     p_sys->track[i].i_track_ID, psz_cat,
                     p_sys->track[i].b_enable ? "enable":"disable",
                     p_sys->track[i].fmt.psz_language ?
                     p_sys->track[i].fmt.psz_language : "undef" );
617
        }
618 619 620 621 622 623 624
        else if( p_sys->track[i].b_ok && p_sys->track[i].b_chapter )
        {
            msg_Dbg( p_demux, "using track[Id 0x%x] for chapter language %s",
                     p_sys->track[i].i_track_ID,
                     p_sys->track[i].fmt.psz_language ?
                     p_sys->track[i].fmt.psz_language : "undef" );
        }
625 626
        else
        {
627 628
            msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
                     p_sys->track[i].i_track_ID );
629 630
        }
    }
631

632 633
    /* */
    LoadChapter( p_demux );
634

635 636 637
    return VLC_SUCCESS;

error:
638
    if( p_sys->p_root )
Laurent Aimar's avatar
Laurent Aimar committed
639
    {
Laurent Aimar's avatar
Laurent Aimar committed
640
        MP4_BoxFree( p_demux->s, p_sys->p_root );
Laurent Aimar's avatar
Laurent Aimar committed
641
    }
642
    free( p_sys );
643
    return VLC_EGENERIC;
644 645 646
}

/*****************************************************************************
647
 * Demux: read packet and send them to decoders
648 649
 *****************************************************************************
 * TODO check for newly selected track (ie audio upt to now )
650
 *****************************************************************************/
Laurent Aimar's avatar
Laurent Aimar committed
651
static int Demux( demux_t *p_demux )
652
{
Laurent Aimar's avatar
Laurent Aimar committed
653
    demux_sys_t *p_sys = p_demux->p_sys;
654
    unsigned int i_track;
655

656 657 658 659

    unsigned int i_track_selected;

    /* check for newly selected/unselected track */
660 661
    for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
         i_track++ )
662
    {
Laurent Aimar's avatar
Laurent Aimar committed
663
        mp4_track_t *tk = &p_sys->track[i_track];
664
        bool b;
Laurent Aimar's avatar
Laurent Aimar committed
665

666
        if( !tk->b_ok || tk->b_chapter ||
667
            ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
668
        {
669
            continue;
670
        }
671

672
        es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
673

674 675 676 677 678 679 680 681 682 683 684 685
        if( tk->b_selected && !b )
        {
            MP4_TrackUnselect( p_demux, tk );
        }
        else if( !tk->b_selected && b)
        {
            MP4_TrackSelect( p_demux, tk, MP4_GetMoviePTS( p_sys ) );
        }

        if( tk->b_selected )
        {
            i_track_selected++;
686 687 688 689 690
        }
    }

    if( i_track_selected <= 0 )
    {
Laurent Aimar's avatar
 
Laurent Aimar committed
691 692 693
        p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
        if( p_sys->i_timescale > 0 )
        {
694
            int64_t i_length = CLOCK_FREQ *
Laurent Aimar's avatar
 
Laurent Aimar committed
695 696 697 698 699 700 701
                               (mtime_t)p_sys->i_duration /
                               (mtime_t)p_sys->i_timescale;
            if( MP4_GetMoviePTS( p_sys ) >= i_length )
                return 0;
            return 1;
        }

Laurent Aimar's avatar
Laurent Aimar committed
702
        msg_Warn( p_demux, "no track selected, exiting..." );
Laurent Aimar's avatar
Laurent Aimar committed
703
        return 0;
704 705
    }

706 707 708
    /* */
    MP4_UpdateSeekpoint( p_demux );

709
    /* first wait for the good time to read a packet */
710
    p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
711 712

    /* we will read 100ms for each stream so ...*/
713 714
    mtime_t i_targettime = p_sys->i_pcr + CLOCK_FREQ/10;
    bool b_data_sent = false;
715

716
    for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
717
    {
Laurent Aimar's avatar
Laurent Aimar committed
718 719
        mp4_track_t *tk = &p_sys->track[i_track];

720
        if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
721
            continue;
722

723 724
        while( MP4_TrackGetDTS( p_demux, tk ) < i_targettime
               || ( p_sys->i_pcr == VLC_TS_INVALID && !b_data_sent ) )
725
        {
726
#if 0
727
            msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
Laurent Aimar's avatar
Laurent Aimar committed
728
                     MP4_TrackGetDTS( p_demux, tk ),
729 730
                     MP4_GetMoviePTS( p_sys ) );
#endif
731 732 733
            int i_nb_samples = 0;
            int i_samplessize = MP4_TrackSampleSize( tk, &i_nb_samples );
            if( i_samplessize > 0 )
734
            {
735
                block_t *p_block;
736
                int64_t i_delta, i_newpos;
737

738
                /* go,go go ! */
739 740
                i_newpos = MP4_TrackGetPos( tk );
                if( stream_Tell( p_demux->s ) != i_newpos )
741
                {
742 743 744 745 746 747 748
                    if( stream_Seek( p_demux->s, i_newpos ) )
                    {
                        msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
                                  tk->i_track_ID );
                        MP4_TrackUnselect( p_demux, tk );
                        break;
                    }
749 750
                }

Laurent Aimar's avatar
Laurent Aimar committed
751
                /* now read pes */
752
                if( !(p_block = stream_Block( p_demux->s, i_samplessize )) )
753
                {
754 755
                    msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
                              tk->i_track_ID );
Laurent Aimar's avatar
Laurent Aimar committed
756
                    MP4_TrackUnselect( p_demux, tk );
757 758
                    break;
                }
759
                else if( tk->fmt.i_cat == SPU_ES )
760
                {
761 762
                    if ( tk->fmt.i_codec != VLC_CODEC_TX3G &&
                         tk->fmt.i_codec != VLC_CODEC_SPU )
763
                        p_block->i_buffer = 0;
764
                }
765

Laurent Aimar's avatar
Laurent Aimar committed
766
                /* dts */
Laurent Aimar's avatar
Laurent Aimar committed
767
                p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
Laurent Aimar's avatar
Laurent Aimar committed
768
                /* pts */
769
                i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
770
                if( i_delta != -1 )
Laurent Aimar's avatar
Laurent Aimar committed
771 772 773 774
                    p_block->i_pts = p_block->i_dts + i_delta;
                else if( tk->fmt.i_cat != VIDEO_ES )
                    p_block->i_pts = p_block->i_dts;
                else
Laurent Aimar's avatar
Laurent Aimar committed
775
                    p_block->i_pts = VLC_TS_INVALID;
776

777 778 779 780 781
                if ( !b_data_sent )
                {
                    es_out_Control( p_demux->out, ES_OUT_SET_PCR, VLC_TS_0 + p_sys->i_pcr );
                    b_data_sent = true;
                }
782
                es_out_Send( p_demux->out, tk->p_es, p_block );
Laurent Aimar's avatar
Laurent Aimar committed
783
            }
784

Laurent Aimar's avatar
Laurent Aimar committed
785
            /* Next sample */
786
            if( MP4_TrackNextSample( p_demux, tk, i_nb_samples ) )
Laurent Aimar's avatar
Laurent Aimar committed
787
                break;
788 789 790
        }
    }

791 792 793 794 795 796 797 798 799 800 801 802 803
    if ( b_data_sent )
    {
        p_sys->i_pcr = INT64_MAX;
        for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
        {
            mp4_track_t *tk = &p_sys->track[i_track];
            if ( !tk->b_ok || !tk->b_selected ) continue;
            p_sys->i_pcr = __MIN( MP4_TrackGetDTS( p_demux, tk ), p_sys->i_pcr );
            p_sys->i_time = p_sys->i_pcr * p_sys->i_timescale / CLOCK_FREQ;
        }
    }

    return b_data_sent;
804
}
805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826

static void MP4_UpdateSeekpoint( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    int64_t i_time;
    int i;
    if( !p_sys->p_title )
        return;
    i_time = MP4_GetMoviePTS( p_sys );
    for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
    {
        if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
            break;
    }
    i--;

    if( i != p_demux->info.i_seekpoint && i >= 0 )
    {
        p_demux->info.i_seekpoint = i;
        p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
    }
}
827
/*****************************************************************************
Sébastien Escudier's avatar
typos  
Sébastien Escudier committed
828
 * Seek: Go to i_date
829 830
******************************************************************************/
static int Seek( demux_t *p_demux, mtime_t i_date )
831
{
Laurent Aimar's avatar
Laurent Aimar committed
832
    demux_sys_t *p_sys = p_demux->p_sys;
833
    unsigned int i_track;
Laurent Aimar's avatar
Laurent Aimar committed
834

Frédéric Yhuel's avatar
Frédéric Yhuel committed
835
    /* First update global time */
836
    p_sys->i_time = i_date * p_sys->i_timescale / CLOCK_FREQ;
837
    p_sys->i_pcr  = VLC_TS_INVALID;
838

839
    /* Now for each stream try to go to this time */
840
    for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
841
    {
Laurent Aimar's avatar
Laurent Aimar committed
842
        mp4_track_t *tk = &p_sys->track[i_track];
843
        MP4_TrackSeek( p_demux, tk, i_date );
844
    }
845
    MP4_UpdateSeekpoint( p_demux );
846 847 848

    es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );

849
    return VLC_SUCCESS;
850
}
851

852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885
static int MP4_frg_Seek( demux_t *p_demux, double f )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    int64_t i64 = stream_Size( p_demux->s );
    if( stream_Seek( p_demux->s, (int64_t)(i64 * f) ) )
    {
        return VLC_EGENERIC;
    }
    else
    {
        /* update global time */
        p_sys->i_time = (uint64_t)(f * (double)p_sys->i_duration);
        p_sys->i_pcr  = MP4_GetMoviePTS( p_sys );

        for( unsigned i_track = 0; i_track < p_sys->i_tracks; i_track++ )
        {
            mp4_track_t *tk = &p_sys->track[i_track];

            /* We don't want the current chunk to be flushed */
            tk->cchunk->i_sample = tk->cchunk->i_sample_count;

            /* reset/update some values */
            tk->i_sample = tk->i_sample_first = 0;
            tk->i_first_dts = p_sys->