mp4.c 138 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
    uint64_t     i_time;         /* time position of the presentation
                                  * in movie timescale */
75
    uint32_t     i_timescale;    /* movie time scale */
76 77 78
    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
    bool         b_fragmented;   /* fMP4 */
82 83
    bool         b_seekable;
    bool         b_fastseekable;
84

85 86
    /* */
    MP4_Box_t    *p_tref_chap;
87 88 89

    /* */
    input_title_t *p_title;
90 91
};

92 93
#define BOXDATA(type) type->data.type

94
/*****************************************************************************
95
 * Declaration of local function
96
 *****************************************************************************/
97
static void MP4_TrackCreate ( demux_t *, mp4_track_t *, MP4_Box_t  *, bool b_force_enable );
98
static int MP4_frg_TrackCreate( demux_t *, mp4_track_t *, MP4_Box_t *);
Christophe Mutricy's avatar
Christophe Mutricy committed
99
static void MP4_TrackDestroy(  mp4_track_t * );
100

Laurent Aimar's avatar
Laurent Aimar committed
101 102
static int  MP4_TrackSelect ( demux_t *, mp4_track_t *, mtime_t );
static void MP4_TrackUnselect(demux_t *, mp4_track_t * );
103

Laurent Aimar's avatar
Laurent Aimar committed
104
static int  MP4_TrackSeek   ( demux_t *, mp4_track_t *, mtime_t );
105

Laurent Aimar's avatar
Laurent Aimar committed
106
static uint64_t MP4_TrackGetPos    ( mp4_track_t * );
107 108
static uint32_t MP4_TrackSampleSize( mp4_track_t *, uint32_t * );
static int      MP4_TrackNextSample( demux_t *, mp4_track_t *, uint32_t );
Laurent Aimar's avatar
Laurent Aimar committed
109
static void     MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
Laurent Aimar's avatar
Laurent Aimar committed
110

111
static void     MP4_UpdateSeekpoint( demux_t * );
112
static const char *MP4_ConvertMacCode( uint16_t );
113

114 115
static MP4_Box_t * MP4_GetTrexByTrackID( MP4_Box_t *p_moov, const uint32_t i_id );

116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
static uint32_t stream_ReadU32( stream_t *s, void *p_read, uint32_t i_toread )
{
    uint32_t i_return = 0;
    if ( i_toread > INT32_MAX )
    {
        i_return = stream_Read( s, p_read, INT32_MAX );
        if ( i_return < INT32_MAX )
            return i_return;
        else
            i_toread -= INT32_MAX;
    }
    i_return += stream_Read( s, (uint8_t *)p_read + i_return, (int32_t) i_toread );
    return i_return;
}

131 132 133 134 135 136 137 138 139 140 141 142 143
static MP4_Box_t * MP4_GetTrexByTrackID( MP4_Box_t *p_moov, const uint32_t i_id )
{
    MP4_Box_t *p_trex = MP4_BoxGet( p_moov, "mvex/trex" );
    while( p_trex )
    {
        if ( p_trex->i_type == ATOM_trex && BOXDATA(p_trex)->i_track_ID == i_id )
                break;
        else
            p_trex = p_trex->p_next;
    }
    return p_trex;
}

144
/* Return time in microsecond of a track */
Laurent Aimar's avatar
Laurent Aimar committed
145
static inline int64_t MP4_TrackGetDTS( demux_t *p_demux, mp4_track_t *p_track )
Laurent Aimar's avatar
Laurent Aimar committed
146
{
147 148 149 150 151 152
    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];
153 154 155 156

    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
157 158 159

    while( i_sample > 0 )
    {
160
        if( i_sample > chunk.p_sample_count_dts[i_index] )
Laurent Aimar's avatar
Laurent Aimar committed
161
        {
162 163 164
            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
165 166 167 168
            i_index++;
        }
        else
        {
169
            i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
Laurent Aimar's avatar
Laurent Aimar committed
170 171 172 173
            break;
        }
    }

174 175 176
    /* now handle elst */
    if( p_track->p_elst )
    {
Laurent Aimar's avatar
Laurent Aimar committed
177
        demux_sys_t         *p_sys = p_demux->p_sys;
178
        MP4_Box_data_elst_t *elst = p_track->BOXDATA(p_elst);
179 180 181 182 183 184 185 186 187 188

        /* 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 */
189 190
        i_dts += p_track->i_elst_time * p_track->i_timescale /
            p_sys->i_timescale;
191 192 193 194

        if( i_dts < 0 ) i_dts = 0;
    }

195
    return CLOCK_FREQ * i_dts / p_track->i_timescale;
Laurent Aimar's avatar
Laurent Aimar committed
196
}
197

198
static inline int64_t MP4_TrackGetPTSDelta( demux_t *p_demux, mp4_track_t *p_track )
Laurent Aimar's avatar
Laurent Aimar committed
199
{
200 201 202 203 204 205 206
    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
207 208 209 210 211 212 213 214 215
    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] )
216
            return ck->p_sample_offset_pts[i_index] * CLOCK_FREQ /
217
                   (int64_t)p_track->i_timescale;
Laurent Aimar's avatar
Laurent Aimar committed
218 219 220 221 222

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

Laurent Aimar's avatar
Laurent Aimar committed
223 224
static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
{
225
    return CLOCK_FREQ * p_sys->i_time / p_sys->i_timescale;
Laurent Aimar's avatar
Laurent Aimar committed
226
}
227

228 229
static void LoadChapter( demux_t  *p_demux );

230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249
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 );
250
                if( p_stra && BOXDATA(p_stra)->i_track_ID )
251 252
                    p_sys->i_tracks++;
                /* Get timescale and duration of the video track; */
253
                if( p_sys->i_timescale == 0 )
254
                {
255 256
                    p_sys->i_timescale = BOXDATA(p_stra)->i_timescale;
                    p_sys->i_duration = BOXDATA(p_stra)->i_duration;
257 258 259 260 261
                    if( p_sys->i_timescale == 0 )
                    {
                        msg_Err( p_demux, "bad timescale" );
                        goto LoadInitFragError;
                    }
262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280
                }
            }
        }
    }
    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;
}

281 282 283 284 285 286 287 288 289 290 291 292
/* Does lookup for remaining boxes */
static int ProbeFragments( demux_t *p_demux )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    msg_Dbg( p_demux, "probing fragments from %"PRId64, stream_Tell( p_demux->s ) );

    MP4_ReadBoxContainerRaw( p_demux->s, p_sys->p_root );

    return VLC_SUCCESS;
}

293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327
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 );
328
        if( !p_stra || BOXDATA(p_stra)->i_track_ID == 0 )
329 330 331 332 333 334 335 336 337 338
            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 );
        }
    }
}

339
/*****************************************************************************
340
 * Open: check file and initializes MP4 structures
341
 *****************************************************************************/
342
static int Open( vlc_object_t * p_this )
343
{
Laurent Aimar's avatar
Laurent Aimar committed
344
    demux_t  *p_demux = (demux_t *)p_this;
345
    demux_sys_t     *p_sys;
346

Christophe Mutricy's avatar
Christophe Mutricy committed
347
    const uint8_t   *p_peek;
348

349
    MP4_Box_t       *p_ftyp;
350
    MP4_Box_t       *p_rmra;
351 352
    MP4_Box_t       *p_mvhd;
    MP4_Box_t       *p_trak;
353

354
    unsigned int    i;
355
    bool      b_enabled_es;
356

357
    /* A little test to see if it could be a mp4 */
358
    if( stream_Peek( p_demux->s, &p_peek, 11 ) < 11 ) return VLC_EGENERIC;
359

360
    switch( VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] ) )
361
    {
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
362 363 364 365 366 367 368 369
        case ATOM_moov:
        case ATOM_foov:
        case ATOM_moof:
        case ATOM_mdat:
        case ATOM_udta:
        case ATOM_free:
        case ATOM_skip:
        case ATOM_wide:
370
        case ATOM_uuid:
371
        case VLC_FOURCC( 'p', 'n', 'o', 't' ):
372
            break;
373 374 375 376 377
        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;
378
         default:
379
            return VLC_EGENERIC;
380
    }
381

382 383 384 385 386
    /* create our structure that will contains all data */
    p_sys = calloc( 1, sizeof( demux_sys_t ) );
    if ( !p_sys )
        return VLC_EGENERIC;

387
    /* I need to seek */
388 389
    stream_Control( p_demux->s, STREAM_CAN_SEEK, &p_sys->b_seekable );
    if( !p_sys->b_seekable )
390
    {
391
        msg_Warn( p_demux, "MP4 plugin discarded (not seekable)" );
392
        free( p_sys );
393
        return VLC_EGENERIC;
394
    }
395
    stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_fastseekable );
396

397
    /*Set exported functions */
Laurent Aimar's avatar
Laurent Aimar committed
398 399
    p_demux->pf_demux = Demux;
    p_demux->pf_control = Control;
400

401
    p_demux->p_sys = p_sys;
402

403 404 405 406 407 408 409 410 411 412 413 414
    /* 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;

415
    /* LoadInitFrag early failed */
416
    if( MP4_BoxCount( p_sys->p_root, "/moov/mvex" ) > 0 )
417
    {
418 419 420 421 422 423 424 425 426
        if ( p_sys->b_seekable )
        {
            /* Probe remaining to check if there's really fragments
               or if that file is just ready to append fragments */
            ProbeFragments( p_demux );
            p_sys->b_fragmented = !!MP4_BoxCount( p_sys->p_root, "/moof" );
        }
        else
            p_sys->b_fragmented = true;
427
    }
428

429 430 431 432 433 434 435 436 437 438 439 440
    if( p_sys->b_fragmented )
    {
        p_demux->pf_demux = DemuxFrg;
    }

    if( b_smooth )
    {
        if( InitTracks( p_demux ) != VLC_SUCCESS )
            goto error;
        CreateTracksFromSmooBox( p_demux );
        return VLC_SUCCESS;
    }
441
    else if( p_sys->b_fragmented )
442 443 444 445
    {
        /* We are not yet able to demux a fragmented MP4 file, using the 'mfra'
         * a file, and we let avformat do the job. */
        msg_Warn( p_demux, "MP4 plugin discarded "\
446
                "(fragmented, let avformat demux it)" );
447 448 449
        stream_Seek( p_demux->s, 0 ); /* rewind, for other demux */
        goto error;
    }
450
    else if( !p_sys->b_fastseekable )
451
    {
452 453
        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
454
        goto error;
455 456
    }

Laurent Aimar's avatar
Laurent Aimar committed
457
    MP4_BoxDumpStructure( p_demux->s, p_sys->p_root );
458

459
    if( ( p_ftyp = MP4_BoxGet( p_sys->p_root, "/ftyp" ) ) )
460
    {
461
        switch( BOXDATA(p_ftyp)->i_major_brand )
462
        {
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
463
            case( ATOM_isom ):
Laurent Aimar's avatar
Laurent Aimar committed
464
                msg_Dbg( p_demux,
465
                         "ISO Media file (isom) version %d.",
466
                         BOXDATA(p_ftyp)->i_minor_version );
467
                break;
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
468
            case( ATOM_3gp4 ):
469 470 471 472 473
            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
474
                        BOXDATA(p_ftyp)->i_major_brand
475
#else
476
                        BOXDATA(p_ftyp)->i_major_brand >> 24
477 478 479 480 481
#endif
                        );
                break;
            case( VLC_FOURCC( 'q', 't', ' ', ' ') ):
                msg_Dbg( p_demux, "Apple QuickTime file" );
482
                break;
483 484 485
            case( VLC_FOURCC( 'i', 's', 'm', 'l') ):
                msg_Dbg( p_demux, "PIFF (= isml = fMP4) file" );
                break;
486
            default:
Laurent Aimar's avatar
Laurent Aimar committed
487
                msg_Dbg( p_demux,
488
                         "unrecognized major file specification (%4.4s).",
489
                          (char*)&BOXDATA(p_ftyp)->i_major_brand );
490 491 492 493 494
                break;
        }
    }
    else
    {
Laurent Aimar's avatar
Laurent Aimar committed
495
        msg_Dbg( p_demux, "file type box missing (assuming ISO Media file)" );
496 497 498
    }

    /* the file need to have one moov box */
499
    if( MP4_BoxCount( p_sys->p_root, "/moov" ) <= 0 )
500
    {
501
        MP4_Box_t *p_foov = MP4_BoxGet( p_sys->p_root, "/foov" );
502 503 504

        if( !p_foov )
        {
505 506
            msg_Err( p_demux, "MP4 plugin discarded (no moov,foov,moof box)" );
            goto error;
507 508
        }
        /* we have a free box as a moov, rename it */
Jean-Baptiste Kempf's avatar
Jean-Baptiste Kempf committed
509
        p_foov->i_type = ATOM_moov;
510 511
    }

512
    if( ( p_rmra = MP4_BoxGet( p_sys->p_root,  "/moov/rmra" ) ) )
513 514 515 516
    {
        int        i_count = MP4_BoxCount( p_rmra, "rmda" );
        int        i;

Laurent Aimar's avatar
Laurent Aimar committed
517
        msg_Dbg( p_demux, "detected playlist mov file (%d ref)", i_count );
518

519
        input_thread_t *p_input = demux_GetParentInput( p_demux );
520
        input_item_t *p_current = input_GetItem( p_input );
521

522 523
        input_item_node_t *p_subitems = input_item_node_Create( p_current );

524
        for( i = 0; i < i_count; i++ )
525
        {
526 527 528
            MP4_Box_t *p_rdrf = MP4_BoxGet( p_rmra, "rmda[%d]/rdrf", i );
            char      *psz_ref;
            uint32_t  i_ref_type;
529

530
            if( !p_rdrf || !( psz_ref = strdup( BOXDATA(p_rdrf)->psz_ref ) ) )
531
            {
532 533
                continue;
            }
534
            i_ref_type = BOXDATA(p_rdrf)->i_ref_type;
535

536 537 538 539 540 541
            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" ) )
542
                {
543
                    msg_Dbg( p_demux, "ignoring pseudo ref =`%s'", psz_ref );
544 545
                    continue;
                }
546 547
                if( !strncmp( psz_ref, "http://", 7 ) ||
                    !strncmp( psz_ref, "rtsp://", 7 ) )
548
                {
549
                    ;
550 551 552
                }
                else
                {
553
                    char *psz_absolute;
554
                    char *psz_path = strdup( p_demux->psz_location );
555 556 557 558
                    char *end = strrchr( psz_path, '/' );
                    if( end ) end[1] = '\0';
                    else *psz_path = '\0';

Christophe Mutricy's avatar
Christophe Mutricy committed
559 560
                    if( asprintf( &psz_absolute, "%s://%s%s",
                                  p_demux->psz_access, psz_path, psz_ref ) < 0 )
Rémi Duraffort's avatar
Rémi Duraffort committed
561 562 563
                    {
                        free( psz_ref );
                        free( psz_path );
François Cartegnie's avatar
François Cartegnie committed
564
                        input_item_node_Delete( p_subitems );
Rémi Duraffort's avatar
Rémi Duraffort committed
565
                        vlc_object_release( p_input) ;
Christophe Mutricy's avatar
Christophe Mutricy committed
566
                        return VLC_ENOMEM;
Rémi Duraffort's avatar
Rémi Duraffort committed
567
                    }
568 569 570 571

                    free( psz_ref );
                    psz_ref = psz_absolute;
                    free( psz_path );
572
                }
573
                msg_Dbg( p_demux, "adding ref = `%s'", psz_ref );
574 575 576 577
                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 );
578
            }
579
            else
580
            {
581
                msg_Err( p_demux, "unknown ref type=%4.4s FIXME (send a bug report)",
582
                         (char*)&BOXDATA(p_rdrf)->i_ref_type );
583
            }
584
            free( psz_ref );
585
        }
586
        input_item_node_PostAndDelete( p_subitems );
587
        vlc_object_release( p_input );
588 589
    }

590
    if( !(p_mvhd = MP4_BoxGet( p_sys->p_root, "/moov/mvhd" ) ) )
591
    {
592 593
        if( !p_rmra )
        {
Laurent Aimar's avatar
Laurent Aimar committed
594
            msg_Err( p_demux, "cannot find /moov/mvhd" );
595
            goto error;
596 597 598
        }
        else
        {
Laurent Aimar's avatar
Laurent Aimar committed
599 600
            msg_Warn( p_demux, "cannot find /moov/mvhd (pure ref file)" );
            p_demux->pf_demux = DemuxRef;
601
            return VLC_SUCCESS;
602
        }
603 604 605
    }
    else
    {
606
        p_sys->i_timescale = BOXDATA(p_mvhd)->i_timescale;
607 608 609 610 611
        if( p_sys->i_timescale == 0 )
        {
            msg_Err( p_this, "bad timescale" );
            goto error;
        }
612
        p_sys->i_duration = BOXDATA(p_mvhd)->i_duration;
613
    }
614

615 616 617 618 619
    /* Try in mehd if fragmented */
    if ( p_sys->i_duration == 0 )
    {
        MP4_Box_t *p_mehd = MP4_BoxGet( p_demux->p_sys->p_root, "moov/mvex/mehd");
        if ( p_mehd )
620
            p_sys->i_duration = BOXDATA(p_mehd)->i_fragment_duration;
621 622
    }

623
    if( !( p_sys->i_tracks = MP4_BoxCount( p_sys->p_root, "/moov/trak" ) ) )
624
    {
Laurent Aimar's avatar
Laurent Aimar committed
625
        msg_Err( p_demux, "cannot find any /moov/trak" );
626
        goto error;
627
    }
628
    msg_Dbg( p_demux, "found %d track%c",
629 630
                        p_sys->i_tracks,
                        p_sys->i_tracks ? 's':' ' );
631

632
    if( InitTracks( p_demux ) != VLC_SUCCESS )
633
        goto error;
634

635 636
    /* Search the first chap reference (like quicktime) and
     * check that at least 1 stream is enabled */
637
    p_sys->p_tref_chap = NULL;
638
    b_enabled_es = false;
639 640 641 642
    for( i = 0; i < p_sys->i_tracks; i++ )
    {
        MP4_Box_t *p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );

643 644

        MP4_Box_t *p_tkhd = MP4_BoxGet( p_trak, "tkhd" );
645
        if( p_tkhd && (BOXDATA(p_tkhd)->i_flags&MP4_TRACK_ENABLED) )
646 647 648 649 650
            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;
651 652
    }

Rémi Denis-Courmont's avatar
Typos  
Rémi Denis-Courmont committed
653
    /* now process each track and extract all useful information */
654
    for( i = 0; i < p_sys->i_tracks; i++ )
655
    {
656
        p_trak = MP4_BoxGet( p_sys->p_root, "/moov/trak[%d]", i );
657
        MP4_TrackCreate( p_demux, &p_sys->track[i], p_trak, !b_enabled_es );
658

659
        if( p_sys->track[i].b_ok && !p_sys->track[i].b_chapter )
660
        {
Laurent Aimar's avatar
Laurent Aimar committed
661
            const char *psz_cat;
662
            switch( p_sys->track[i].fmt.i_cat )
663 664 665 666 667 668 669
            {
                case( VIDEO_ES ):
                    psz_cat = "video";
                    break;
                case( AUDIO_ES ):
                    psz_cat = "audio";
                    break;
670 671 672 673
                case( SPU_ES ):
                    psz_cat = "subtitle";
                    break;

674
                default:
675
                    psz_cat = "unknown";
676 677
                    break;
            }
678

Laurent Aimar's avatar
Laurent Aimar committed
679
            msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
680 681 682 683
                     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" );
684
        }
685 686 687 688 689 690 691
        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" );
        }
692 693
        else
        {
694 695
            msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
                     p_sys->track[i].i_track_ID );
696 697
        }
    }
698

699 700
    /* */
    LoadChapter( p_demux );
701

702 703 704
    return VLC_SUCCESS;

error:
705
    if( p_sys->p_root )
Laurent Aimar's avatar
Laurent Aimar committed
706
    {
Laurent Aimar's avatar
Laurent Aimar committed
707
        MP4_BoxFree( p_demux->s, p_sys->p_root );
Laurent Aimar's avatar
Laurent Aimar committed
708
    }
709
    free( p_sys );
710
    return VLC_EGENERIC;
711 712 713
}

/*****************************************************************************
714
 * Demux: read packet and send them to decoders
715 716
 *****************************************************************************
 * TODO check for newly selected track (ie audio upt to now )
717
 *****************************************************************************/
Laurent Aimar's avatar
Laurent Aimar committed
718
static int Demux( demux_t *p_demux )
719
{
Laurent Aimar's avatar
Laurent Aimar committed
720
    demux_sys_t *p_sys = p_demux->p_sys;
721
    unsigned int i_track;
722

723 724 725 726

    unsigned int i_track_selected;

    /* check for newly selected/unselected track */
727 728
    for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks;
         i_track++ )
729
    {
Laurent Aimar's avatar
Laurent Aimar committed
730
        mp4_track_t *tk = &p_sys->track[i_track];
731
        bool b;
Laurent Aimar's avatar
Laurent Aimar committed
732

733
        if( !tk->b_ok || tk->b_chapter ||
734
            ( tk->b_selected && tk->i_sample >= tk->i_sample_count ) )
735
        {
736
            continue;
737
        }
738

739
        es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
740

741 742 743 744 745 746 747 748 749 750 751 752
        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++;
753 754 755 756 757
        }
    }

    if( i_track_selected <= 0 )
    {
Laurent Aimar's avatar
 
Laurent Aimar committed
758 759 760
        p_sys->i_time += __MAX( p_sys->i_timescale / 10 , 1 );
        if( p_sys->i_timescale > 0 )
        {
761
            int64_t i_length = CLOCK_FREQ *
Laurent Aimar's avatar
 
Laurent Aimar committed
762 763 764 765 766 767 768
                               (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
769
        msg_Warn( p_demux, "no track selected, exiting..." );
Laurent Aimar's avatar
Laurent Aimar committed
770
        return 0;
771 772
    }

773 774 775
    /* */
    MP4_UpdateSeekpoint( p_demux );

776
    /* first wait for the good time to read a packet */
777
    p_sys->i_pcr = MP4_GetMoviePTS( p_sys );
778 779

    /* we will read 100ms for each stream so ...*/
780 781
    mtime_t i_targettime = p_sys->i_pcr + CLOCK_FREQ/10;
    bool b_data_sent = false;
782

783
    for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
784
    {
Laurent Aimar's avatar
Laurent Aimar committed
785 786
        mp4_track_t *tk = &p_sys->track[i_track];

787
        if( !tk->b_ok || tk->b_chapter || !tk->b_selected || tk->i_sample >= tk->i_sample_count )
788
            continue;
789

790 791
        while( MP4_TrackGetDTS( p_demux, tk ) < i_targettime
               || ( p_sys->i_pcr == VLC_TS_INVALID && !b_data_sent ) )
792
        {
793
#if 0
794
            msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
Laurent Aimar's avatar
Laurent Aimar committed
795
                     MP4_TrackGetDTS( p_demux, tk ),
796 797
                     MP4_GetMoviePTS( p_sys ) );
#endif
798 799
            uint32_t i_nb_samples = 0;
            uint32_t i_samplessize = MP4_TrackSampleSize( tk, &i_nb_samples );
800
            if( i_samplessize > 0 )
801
            {
802
                block_t *p_block;
803
                int64_t i_delta, i_newpos;
804

805
                /* go,go go ! */
806 807
                i_newpos = MP4_TrackGetPos( tk );
                if( stream_Tell( p_demux->s ) != i_newpos )
808
                {
809 810 811 812 813 814 815
                    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;
                    }
816 817
                }

Laurent Aimar's avatar
Laurent Aimar committed
818
                /* now read pes */
819
                if( !(p_block = stream_Block( p_demux->s, i_samplessize )) )
820
                {
821 822
                    msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
                              tk->i_track_ID );
Laurent Aimar's avatar
Laurent Aimar committed
823
                    MP4_TrackUnselect( p_demux, tk );
824 825
                    break;
                }
826
                else if( tk->fmt.i_cat == SPU_ES )
827
                {
828 829
                    if ( tk->fmt.i_codec != VLC_CODEC_TX3G &&
                         tk->fmt.i_codec != VLC_CODEC_SPU )
830
                        p_block->i_buffer = 0;
831
                }
832

Laurent Aimar's avatar
Laurent Aimar committed
833
                /* dts */
Laurent Aimar's avatar
Laurent Aimar committed
834
                p_block->i_dts = VLC_TS_0 + MP4_TrackGetDTS( p_demux, tk );
Laurent Aimar's avatar
Laurent Aimar committed
835
                /* pts */
836
                i_delta = MP4_TrackGetPTSDelta( p_demux, tk );
837
                if( i_delta != -1 )
Laurent Aimar's avatar
Laurent Aimar committed
838 839 840 841
                    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
842
                    p_block->i_pts = VLC_TS_INVALID;
843

844 845 846 847 848
                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;
                }