git.sesse.net Git - vlc/blob - modules/demux/asf/asf.c

   1 /*****************************************************************************
   2  * asf.c : ASFv01 file input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: asf.c,v 1.21 2003/02/27 13:19:43 gbazin Exp $
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include <stdlib.h>                                      /* malloc(), free() */
  27 #include <string.h>                                              /* strdup() */
  28 #include <errno.h>
  29 #include <sys/types.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33
  34 #include "libasf.h"
  35 #include "asf.h"
  36
  37 /*****************************************************************************
  38  * Local prototypes
  39  *****************************************************************************/
  40 static int    Activate   ( vlc_object_t * );
  41 static void   Deactivate ( vlc_object_t * );
  42 static int    Demux      ( input_thread_t * );
  43
  44 /*****************************************************************************
  45  * Module descriptor
  46  *****************************************************************************/
  47 vlc_module_begin();
  48     set_description( _("ASF v1.0 demuxer (file only)") );
  49     set_capability( "demux", 200 );
  50     set_callbacks( Activate, Deactivate );
  51     add_shortcut( "asf" );
  52 vlc_module_end();
  53
  54 static uint16_t GetWLE( uint8_t *p_buff )
  55 {
  56     return( (p_buff[0]) + ( p_buff[1] <<8 ) );
  57 }
  58 static uint32_t GetDWLE( uint8_t *p_buff )
  59 {
  60     return( p_buff[0] + ( p_buff[1] <<8 ) +
  61             ( p_buff[2] <<16 ) + ( p_buff[3] <<24 ) );
  62 }
  63
  64 /*****************************************************************************
  65  * Activate: check file and initializes ASF structures
  66  *****************************************************************************/
  67 static int Activate( vlc_object_t * p_this )
  68 {
  69     input_thread_t  *p_input = (input_thread_t *)p_this;
  70     uint8_t         *p_peek;
  71     guid_t          guid;
  72
  73     demux_sys_t     *p_demux;
  74     int             i_stream;
  75
  76     /* Initialize access plug-in structures. */
  77     if( p_input->i_mtu == 0 )
  78     {
  79         /* Improve speed. */
  80         p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
  81     }
  82
  83     p_input->pf_demux = Demux;
  84
  85     /* a little test to see if it could be a asf stream */
  86     if( input_Peek( p_input, &p_peek, 16 ) < 16 )
  87     {
  88         msg_Warn( p_input, "ASF v1.0 plugin discarded (cannot peek)" );
  89         return( -1 );
  90     }
  91     GetGUID( &guid, p_peek );
  92     if( !CmpGUID( &guid, &asf_object_header_guid ) )
  93     {
  94         msg_Warn( p_input, "ASF v1.0 plugin discarded (not a valid file)" );
  95         return( -1 );
  96     }
  97
  98     /* create our structure that will contains all data */
  99     if( !( p_input->p_demux_data =
 100                 p_demux = malloc( sizeof( demux_sys_t ) ) ) )
 101     {
 102         msg_Err( p_input, "out of memory" );
 103         return( -1 );
 104     }
 105     memset( p_demux, 0, sizeof( demux_sys_t ) );
 106
 107     /* Now load all object ( except raw data ) */
 108     if( !ASF_ReadObjectRoot( p_input, &p_demux->root, p_input->stream.b_seekable ) )
 109     {
 110         msg_Warn( p_input, "ASF v1.0 plugin discarded (not a valid file)" );
 111         free( p_demux );
 112         return( -1 );
 113     }
 114     /* Check if we have found all mandatory asf object */
 115     if( !p_demux->root.p_hdr || !p_demux->root.p_data )
 116     {
 117         ASF_FreeObjectRoot( p_input, &p_demux->root );
 118         free( p_demux );
 119         msg_Warn( p_input, "ASF v1.0 plugin discarded (not a valid file)" );
 120         return( -1 );
 121     }
 122
 123     if( !( p_demux->p_fp = ASF_FindObject( p_demux->root.p_hdr,
 124                                     &asf_object_file_properties_guid, 0 ) ) )
 125     {
 126         ASF_FreeObjectRoot( p_input, &p_demux->root );
 127         free( p_demux );
 128         msg_Warn( p_input, "ASF v1.0 plugin discarded (missing file_properties object)" );
 129         return( -1 );
 130     }
 131
 132     if( p_demux->p_fp->i_min_data_packet_size != p_demux->p_fp->i_max_data_packet_size )
 133     {
 134         ASF_FreeObjectRoot( p_input, &p_demux->root );
 135         free( p_demux );
 136         msg_Warn( p_input, "ASF v1.0 plugin discarded (invalid file_properties object)" );
 137         return( -1 );
 138     }
 139
 140     p_demux->i_streams = ASF_CountObject( p_demux->root.p_hdr,
 141                                           &asf_object_stream_properties_guid );
 142     if( !p_demux->i_streams )
 143     {
 144         ASF_FreeObjectRoot( p_input, &p_demux->root );
 145         free( p_demux );
 146         msg_Warn( p_input, "ASF plugin discarded (cannot find any stream!)" );
 147         return( -1 );
 148     }
 149     else
 150     {
 151         input_info_category_t *p_cat = input_InfoCategory( p_input, "Asf" );
 152         msg_Dbg( p_input, "found %d streams", p_demux->i_streams );
 153         input_AddInfo( p_cat, "Number of streams", "%d" , p_demux->i_streams );
 154     }
 155
 156     /*  create one program */
 157     vlc_mutex_lock( &p_input->stream.stream_lock );
 158     if( input_InitStream( p_input, 0 ) == -1)
 159     {
 160         vlc_mutex_unlock( &p_input->stream.stream_lock );
 161         msg_Err( p_input, "cannot init stream" );
 162         return( -1 );
 163     }
 164     if( input_AddProgram( p_input, 0, 0) == NULL )
 165     {
 166         vlc_mutex_unlock( &p_input->stream.stream_lock );
 167         msg_Err( p_input, "cannot add program" );
 168         return( -1 );
 169     }
 170     p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 171     p_input->stream.i_mux_rate = 0 ; /* FIXME */
 172     vlc_mutex_unlock( &p_input->stream.stream_lock );
 173
 174     for( i_stream = 0; i_stream < p_demux->i_streams; i_stream ++ )
 175     {
 176         asf_stream_t    *p_stream;
 177         asf_object_stream_properties_t *p_sp;
 178         char psz_cat[sizeof("Stream ")+10];
 179         input_info_category_t *p_cat;
 180         sprintf( psz_cat, "Stream %d", i_stream );
 181         p_cat = input_InfoCategory( p_input, psz_cat);
 182
 183         p_sp = ASF_FindObject( p_demux->root.p_hdr,
 184                                &asf_object_stream_properties_guid,
 185                                i_stream );
 186
 187         p_stream =
 188             p_demux->stream[p_sp->i_stream_number] =
 189                 malloc( sizeof( asf_stream_t ) );
 190         memset( p_stream, 0, sizeof( asf_stream_t ) );
 191         p_stream->p_sp = p_sp;
 192
 193         vlc_mutex_lock( &p_input->stream.stream_lock );
 194         p_stream->p_es =
 195             input_AddES( p_input,
 196                          p_input->stream.p_selected_program,
 197                          p_sp->i_stream_number,
 198                          0 );
 199
 200         vlc_mutex_unlock( &p_input->stream.stream_lock );
 201         if( CmpGUID( &p_sp->i_stream_type, &asf_object_stream_type_audio ) )
 202         {
 203             int i_codec;
 204             if( p_sp->p_type_specific_data )
 205             {
 206                 i_codec = GetWLE( p_sp->p_type_specific_data );
 207             }
 208             else
 209             {
 210                 i_codec = -1;
 211             }
 212
 213             p_stream->i_cat = AUDIO_ES;
 214             input_AddInfo( p_cat, "Type", "Audio" );
 215             msg_Dbg( p_input,
 216                     "adding new audio stream(codec:0x%x,ID:%d)",
 217                     i_codec,
 218                     p_sp->i_stream_number );
 219             switch( i_codec )
 220             {
 221                 case( 0x01 ):
 222                     p_stream->p_es->i_fourcc =
 223                         VLC_FOURCC( 'a', 'r', 'a', 'w' );
 224                     break;
 225                 case( 0x50 ):
 226                 case( 0x55 ):
 227                     p_stream->p_es->i_fourcc =
 228                         VLC_FOURCC( 'm','p','g','a' );
 229                     break;
 230                 case( 0x2000 ):
 231                     p_stream->p_es->i_fourcc =
 232                         VLC_FOURCC( 'a','5','2',' ' );
 233                     break;
 234                 case( 0x160 ):
 235                     p_stream->p_es->i_fourcc =
 236                         VLC_FOURCC( 'w','m','a','1' );
 237                     break;
 238                 case( 0x161 ):
 239                     p_stream->p_es->i_fourcc =
 240                         VLC_FOURCC( 'w','m','a','2' );
 241                     break;
 242                 default:
 243                     p_stream->p_es->i_fourcc =
 244                         VLC_FOURCC( 'm','s',(i_codec >> 8)&0xff,i_codec&0xff );
 245             }
 246             input_AddInfo( p_cat, "Codec", "%.4s", (char*)&p_stream->p_es->i_fourcc );
 247             if( p_sp->i_type_specific_data_length > 0 )
 248             {
 249                 WAVEFORMATEX    *p_wf;
 250                 size_t          i_size;
 251                 uint8_t         *p_data;
 252
 253                 i_size = p_sp->i_type_specific_data_length;
 254
 255                 p_wf = malloc( i_size );
 256                 p_stream->p_es->p_waveformatex = (void*)p_wf;
 257                 p_data = p_sp->p_type_specific_data;
 258
 259                 p_wf->wFormatTag        = GetWLE( p_data );
 260                 p_wf->nChannels         = GetWLE( p_data + 2 );
 261                 input_AddInfo( p_cat, "Channels", "%d", p_wf->nChannels );
 262                 p_wf->nSamplesPerSec    = GetDWLE( p_data + 4 );
 263                 input_AddInfo( p_cat, "Sample rate", "%d", p_wf->nSamplesPerSec );
 264                 p_wf->nAvgBytesPerSec   = GetDWLE( p_data + 8 );
 265                 input_AddInfo( p_cat, "Avg. byterate", "%d", p_wf->nAvgBytesPerSec );
 266                 p_wf->nBlockAlign       = GetWLE( p_data + 12 );
 267                 p_wf->wBitsPerSample    = GetWLE( p_data + 14 );
 268                 input_AddInfo( p_cat, "Bits Per Sample", "%d", p_wf->wBitsPerSample );
 269                 p_wf->cbSize            = __MAX( 0,
 270                                               i_size - sizeof( WAVEFORMATEX ));
 271                 if( i_size > sizeof( WAVEFORMATEX ) )
 272                 {
 273                     memcpy( (uint8_t*)p_wf + sizeof( WAVEFORMATEX ),
 274                             p_data + sizeof( WAVEFORMATEX ),
 275                             i_size - sizeof( WAVEFORMATEX ) );
 276                 }
 277             }
 278
 279         }
 280         else
 281         if( CmpGUID( &p_sp->i_stream_type, &asf_object_stream_type_video ) )
 282         {
 283             p_stream->i_cat = VIDEO_ES;
 284             input_AddInfo( p_cat, "Type", "Video" );
 285             msg_Dbg( p_input,
 286                     "adding new video stream(ID:%d)",
 287                     p_sp->i_stream_number );
 288             if( p_sp->p_type_specific_data )
 289             {
 290                 p_stream->p_es->i_fourcc =
 291                     VLC_FOURCC( p_sp->p_type_specific_data[27],
 292                                 p_sp->p_type_specific_data[28],
 293                                 p_sp->p_type_specific_data[29],
 294                                 p_sp->p_type_specific_data[30] );
 295             }
 296             else
 297             {
 298                 p_stream->p_es->i_fourcc =
 299                     VLC_FOURCC( 'u','n','d','f' );
 300             }
 301             input_AddInfo( p_cat, "Codec", "%.4s", (char*)&p_stream->p_es->i_fourcc );
 302             if( p_sp->i_type_specific_data_length > 11 )
 303             {
 304                 BITMAPINFOHEADER *p_bih;
 305                 size_t      i_size;
 306                 uint8_t     *p_data;
 307
 308                 i_size = p_sp->i_type_specific_data_length - 11;
 309
 310                 p_bih = malloc( i_size );
 311                 p_stream->p_es->p_bitmapinfoheader = (void*)p_bih;
 312                 p_data = p_sp->p_type_specific_data + 11;
 313
 314                 p_bih->biSize       = GetDWLE( p_data );
 315                 input_AddInfo( p_cat, "Size", "%d", p_bih->biSize );
 316                 p_bih->biWidth      = GetDWLE( p_data + 4 );
 317                 p_bih->biHeight     = GetDWLE( p_data + 8 );
 318                 input_AddInfo( p_cat, "Resolution", "%dx%d", p_bih->biWidth, p_bih->biHeight );
 319                 p_bih->biPlanes     = GetDWLE( p_data + 12 );
 320                 input_AddInfo( p_cat, "Planes", "%d", p_bih->biPlanes );
 321                 p_bih->biBitCount   = GetDWLE( p_data + 14 );
 322                 input_AddInfo( p_cat, "Bits per pixel", "%d", p_bih->biBitCount );
 323                 p_bih->biCompression= GetDWLE( p_data + 16 );
 324                 input_AddInfo( p_cat, "Compression Rate", "%d", p_bih->biCompression );
 325                 p_bih->biSizeImage  = GetDWLE( p_data + 20 );
 326                 input_AddInfo( p_cat, "Image Size", "%d", p_bih->biSizeImage );
 327                 p_bih->biXPelsPerMeter = GetDWLE( p_data + 24 );
 328                 input_AddInfo( p_cat, "X pixels per meter", "%d", p_bih->biXPelsPerMeter );
 329                 p_bih->biYPelsPerMeter = GetDWLE( p_data + 28 );
 330                 input_AddInfo( p_cat, "Y pixels per meter", "%d", p_bih->biYPelsPerMeter );
 331                 p_bih->biClrUsed       = GetDWLE( p_data + 32 );
 332                 p_bih->biClrImportant  = GetDWLE( p_data + 36 );
 333
 334                 if( i_size > sizeof( BITMAPINFOHEADER ) )
 335                 {
 336                     memcpy( (uint8_t*)p_bih + sizeof( BITMAPINFOHEADER ),
 337                             p_data + sizeof( BITMAPINFOHEADER ),
 338                             i_size - sizeof( BITMAPINFOHEADER ) );
 339                 }
 340             }
 341
 342         }
 343         else
 344         {
 345             p_stream->i_cat = UNKNOWN_ES;
 346             msg_Dbg( p_input,
 347                     "ignoring unknown stream(ID:%d)",
 348                     p_sp->i_stream_number );
 349             p_stream->p_es->i_fourcc = VLC_FOURCC( 'u','n','d','f' );
 350         }
 351         p_stream->p_es->i_cat = p_stream->i_cat;
 352
 353         vlc_mutex_lock( &p_input->stream.stream_lock );
 354         if( p_stream->p_es->i_fourcc != VLC_FOURCC( 'u','n','d','f' ) )
 355         {
 356             input_SelectES( p_input, p_stream->p_es );
 357         }
 358         vlc_mutex_unlock( &p_input->stream.stream_lock );
 359     }
 360
 361
 362     p_demux->i_data_begin = p_demux->root.p_data->i_object_pos + 50;
 363     if( p_demux->root.p_data->i_object_size != 0 )
 364     { // local file
 365         p_demux->i_data_end = p_demux->root.p_data->i_object_pos +
 366                                     p_demux->root.p_data->i_object_size;
 367     }
 368     else
 369     { // live/broacast
 370         p_demux->i_data_end = -1;
 371     }
 372
 373
 374     // go to first packet
 375     ASF_SeekAbsolute( p_input, p_demux->i_data_begin );
 376
 377     vlc_mutex_lock( &p_input->stream.stream_lock );
 378     /* try to calculate movie time */
 379     if( p_demux->p_fp->i_data_packets_count > 0 )
 380     {
 381         int64_t i_count;
 382         mtime_t i_length;
 383
 384         /* real number of packets */
 385         i_count = ( p_input->stream.p_selected_area->i_size -
 386                        p_demux->i_data_begin ) /
 387                             p_demux->p_fp->i_min_data_packet_size;
 388         /* calculate the time duration in s */
 389         i_length = (mtime_t)p_demux->p_fp->i_play_duration / 10 *
 390                    (mtime_t)i_count /
 391                    (mtime_t)p_demux->p_fp->i_data_packets_count /
 392                    (mtime_t)1000000;
 393         if( i_length > 0 )
 394         {
 395             p_input->stream.i_mux_rate =
 396                 p_input->stream.p_selected_area->i_size / 50 / i_length;
 397         }
 398         else
 399         {
 400             p_input->stream.i_mux_rate = 0;
 401         }
 402
 403     }
 404     else
 405     {
 406         /* cannot known */
 407         p_input->stream.i_mux_rate = 0;
 408     }
 409
 410
 411
 412     p_input->stream.p_selected_program->b_is_ok = 1;
 413     vlc_mutex_unlock( &p_input->stream.stream_lock );
 414
 415
 416     return( 0 );
 417 }
 418
 419
 420 static mtime_t GetMoviePTS( demux_sys_t *p_demux )
 421 {
 422     mtime_t i_time;
 423     int     i_stream;
 424
 425     i_time = -1;
 426     for( i_stream = 0; i_stream < 128 ; i_stream++ )
 427     {
 428 #define p_stream p_demux->stream[i_stream]
 429         if( p_stream && p_stream->p_es && p_stream->p_es->p_decoder_fifo && p_stream->i_time > 0)
 430         {
 431             if( i_time < 0 )
 432             {
 433                 i_time = p_stream->i_time;
 434             }
 435             else
 436             {
 437                 i_time = __MIN( i_time, p_stream->i_time );
 438             }
 439         }
 440 #undef p_stream
 441     }
 442
 443     return( i_time );
 444 }
 445
 446 /*****************************************************************************
 447  * Demux: read packet and send them to decoders
 448  *****************************************************************************/
 449 #define GETVALUE2b( bits, var, def ) \
 450     switch( (bits)&0x03 ) \
 451     { \
 452         case 1: var = p_peek[i_skip]; i_skip++; break; \
 453         case 2: var = GetWLE( p_peek + i_skip );  i_skip+= 2; break; \
 454         case 3: var = GetDWLE( p_peek + i_skip ); i_skip+= 4; break; \
 455         case 0: \
 456         default: var = def; break;\
 457     }
 458
 459 static int DemuxPacket( input_thread_t *p_input, vlc_bool_t b_play_audio )
 460 {
 461     demux_sys_t *p_demux = p_input->p_demux_data;
 462     int     i_data_packet_min = p_demux->p_fp->i_min_data_packet_size;
 463     uint8_t *p_peek;
 464     int     i_skip;
 465
 466     int     i_packet_size_left;
 467     int     i_packet_flags;
 468     int     i_packet_property;
 469
 470     int     b_packet_multiple_payload;
 471     int     i_packet_length;
 472     int     i_packet_sequence;
 473     int     i_packet_padding_length;
 474
 475     uint32_t    i_packet_send_time;
 476     uint16_t    i_packet_duration;
 477     int         i_payload;
 478     int         i_payload_count;
 479     int         i_payload_length_type;
 480
 481
 482     if( input_Peek( p_input, &p_peek, i_data_packet_min ) < i_data_packet_min )
 483     {
 484         // EOF ?
 485         msg_Warn( p_input, "cannot peek while getting new packet, EOF ?" );
 486         return( 0 );
 487     }
 488     i_skip = 0;
 489
 490     /* *** parse error correction if present *** */
 491     if( p_peek[0]&0x80 )
 492     {
 493         unsigned int i_error_correction_length_type;
 494         unsigned int i_error_correction_data_length;
 495         unsigned int i_opaque_data_present;
 496
 497         i_error_correction_data_length = p_peek[0] & 0x0f;  // 4bits
 498         i_opaque_data_present = ( p_peek[0] >> 4 )& 0x01;    // 1bit
 499         i_error_correction_length_type = ( p_peek[0] >> 5 ) & 0x03; // 2bits
 500         i_skip += 1; // skip error correction flags
 501
 502         if( i_error_correction_length_type != 0x00 ||
 503             i_opaque_data_present != 0 ||
 504             i_error_correction_data_length != 0x02 )
 505         {
 506             goto loop_error_recovery;
 507         }
 508
 509         i_skip += i_error_correction_data_length;
 510     }
 511     else
 512     {
 513         msg_Warn( p_input, "p_peek[0]&0x80 != 0x80" );
 514     }
 515
 516     /* sanity check */
 517     if( i_skip + 2 >= i_data_packet_min )
 518     {
 519         goto loop_error_recovery;
 520     }
 521
 522     i_packet_flags = p_peek[i_skip]; i_skip++;
 523     i_packet_property = p_peek[i_skip]; i_skip++;
 524
 525     b_packet_multiple_payload = i_packet_flags&0x01;
 526
 527     /* read some value */
 528     GETVALUE2b( i_packet_flags >> 5, i_packet_length, i_data_packet_min );
 529     GETVALUE2b( i_packet_flags >> 1, i_packet_sequence, 0 );
 530     GETVALUE2b( i_packet_flags >> 3, i_packet_padding_length, 0 );
 531
 532     i_packet_send_time = GetDWLE( p_peek + i_skip ); i_skip += 4;
 533     i_packet_duration  = GetWLE( p_peek + i_skip ); i_skip += 2;
 534
 535 //        i_packet_size_left = i_packet_length;   // XXX données reellement lu
 536     /* FIXME I have to do that for some file, I don't known why */
 537     i_packet_size_left = i_data_packet_min;
 538
 539     if( b_packet_multiple_payload )
 540     {
 541         i_payload_count = p_peek[i_skip] & 0x3f;
 542         i_payload_length_type = ( p_peek[i_skip] >> 6 )&0x03;
 543         i_skip++;
 544     }
 545     else
 546     {
 547         i_payload_count = 1;
 548         i_payload_length_type = 0x02; // unused
 549     }
 550
 551     for( i_payload = 0; i_payload < i_payload_count ; i_payload++ )
 552     {
 553         asf_stream_t   *p_stream;
 554
 555         int i_stream_number;
 556         int i_media_object_number;
 557         int i_media_object_offset;
 558         int i_replicated_data_length;
 559         int i_payload_data_length;
 560         int i_payload_data_pos;
 561         int i_sub_payload_data_length;
 562         int i_tmp;
 563
 564         mtime_t i_pts;
 565         mtime_t i_pts_delta;
 566
 567         if( i_skip >= i_packet_size_left )
 568         {
 569             /* prevent some segfault with invalid file */
 570             break;
 571         }
 572
 573         i_stream_number = p_peek[i_skip] & 0x7f;
 574         i_skip++;
 575
 576         GETVALUE2b( i_packet_property >> 4, i_media_object_number, 0 );
 577         GETVALUE2b( i_packet_property >> 2, i_tmp, 0 );
 578         GETVALUE2b( i_packet_property, i_replicated_data_length, 0 );
 579
 580         if( i_replicated_data_length > 1 ) // should be at least 8 bytes
 581         {
 582             i_pts = (mtime_t)GetDWLE( p_peek + i_skip + 4 ) * 1000;
 583             i_skip += i_replicated_data_length;
 584             i_pts_delta = 0;
 585
 586             i_media_object_offset = i_tmp;
 587
 588             if( i_skip >= i_packet_size_left )
 589             {
 590                 break;
 591             }
 592         }
 593         else if( i_replicated_data_length == 1 )
 594         {
 595
 596             msg_Dbg( p_input, "found compressed payload" );
 597
 598             i_pts = (mtime_t)i_tmp * 1000;
 599             i_pts_delta = (mtime_t)p_peek[i_skip] * 1000; i_skip++;
 600
 601             i_media_object_offset = 0;
 602         }
 603         else
 604         {
 605             i_pts = (mtime_t)i_packet_send_time * 1000;
 606             i_pts_delta = 0;
 607
 608             i_media_object_offset = i_tmp;
 609         }
 610
 611         i_pts = __MAX( i_pts - p_demux->p_fp->i_preroll * 1000, 0 );
 612         if( b_packet_multiple_payload )
 613         {
 614             GETVALUE2b( i_payload_length_type, i_payload_data_length, 0 );
 615         }
 616         else
 617         {
 618             i_payload_data_length = i_packet_length -
 619                                         i_packet_padding_length - i_skip;
 620         }
 621
 622         if( i_payload_data_length < 0 || i_skip + i_payload_data_length > i_packet_size_left )
 623         {
 624             break;
 625         }
 626
 627 #if 0
 628          msg_Dbg( p_input,
 629                   "payload(%d/%d) stream_number:%d media_object_number:%d media_object_offset:%d replicated_data_length:%d payload_data_length %d",
 630                   i_payload + 1,
 631                   i_payload_count,
 632                   i_stream_number,
 633                   i_media_object_number,
 634                   i_media_object_offset,
 635                   i_replicated_data_length,
 636                   i_payload_data_length );
 637 #endif
 638
 639         if( !( p_stream = p_demux->stream[i_stream_number] ) )
 640         {
 641             msg_Warn( p_input,
 642                       "undeclared stream[Id 0x%x]", i_stream_number );
 643             i_skip += i_payload_data_length;
 644             continue;   // over payload
 645         }
 646
 647         if( !p_stream->p_es || !p_stream->p_es->p_decoder_fifo )
 648         {
 649             i_skip += i_payload_data_length;
 650             continue;
 651         }
 652
 653
 654         for( i_payload_data_pos = 0;
 655              i_payload_data_pos < i_payload_data_length &&
 656                     i_packet_size_left > 0;
 657              i_payload_data_pos += i_sub_payload_data_length )
 658         {
 659             data_packet_t  *p_data;
 660             int i_read;
 661             // read sub payload length
 662             if( i_replicated_data_length == 1 )
 663             {
 664                 i_sub_payload_data_length = p_peek[i_skip]; i_skip++;
 665                 i_payload_data_pos++;
 666             }
 667             else
 668             {
 669                 i_sub_payload_data_length = i_payload_data_length;
 670             }
 671
 672             /* FIXME I don't use i_media_object_number, sould I ? */
 673             if( p_stream->p_pes && i_media_object_offset == 0 )                 {
 674                 /* send complete packet to decoder */
 675                 if( p_stream->p_pes->i_pes_size > 0 )
 676                 {
 677                     if( p_stream->p_es->p_decoder_fifo &&
 678                         ( b_play_audio || p_stream->i_cat != AUDIO_ES ) )
 679                     {
 680                         input_DecodePES( p_stream->p_es->p_decoder_fifo,
 681                                          p_stream->p_pes );
 682                     }
 683                     else
 684                     {
 685                         input_DeletePES( p_input->p_method_data,
 686                                          p_stream->p_pes );
 687                     }
 688                     p_stream->p_pes = NULL;
 689                 }
 690             }
 691
 692             if( !p_stream->p_pes )  // add a new PES
 693             {
 694                 p_stream->i_time =
 695                     ( (mtime_t)i_pts + i_payload * (mtime_t)i_pts_delta );
 696
 697                 p_stream->p_pes = input_NewPES( p_input->p_method_data );
 698                 p_stream->p_pes->i_dts =
 699                     p_stream->p_pes->i_pts =
 700                         input_ClockGetTS( p_input,
 701                                           p_input->stream.p_selected_program,
 702                                           p_stream->i_time * 9 /100 );
 703
 704                 p_stream->p_pes->p_next = NULL;
 705                 p_stream->p_pes->i_nb_data = 0;
 706                 p_stream->p_pes->i_pes_size = 0;
 707             }
 708
 709             i_read = i_sub_payload_data_length + i_skip;
 710             if( input_SplitBuffer( p_input, &p_data, i_read ) < i_read )
 711             {
 712                 msg_Warn( p_input, "cannot read data" );
 713                 return( 0 );
 714             }
 715             p_data->p_payload_start += i_skip;
 716             i_packet_size_left -= i_read;
 717
 718
 719             if( !p_stream->p_pes->p_first )
 720             {
 721                 p_stream->p_pes->p_first = p_stream->p_pes->p_last = p_data;
 722             }
 723             else
 724             {
 725                 p_stream->p_pes->p_last->p_next = p_data;
 726                 p_stream->p_pes->p_last = p_data;
 727             }
 728             p_stream->p_pes->i_pes_size += i_sub_payload_data_length;
 729             p_stream->p_pes->i_nb_data++;
 730
 731             i_skip = 0;
 732             if( i_packet_size_left > 0 )
 733             {
 734                 if( input_Peek( p_input, &p_peek, i_packet_size_left ) < i_packet_size_left )
 735                 {
 736                     // EOF ?
 737                     msg_Warn( p_input, "cannot peek, EOF ?" );
 738                     return( 0 );
 739                 }
 740             }
 741         }
 742     }
 743
 744     if( i_packet_size_left > 0 )
 745     {
 746         if( !ASF_SkipBytes( p_input, i_packet_size_left ) )
 747         {
 748             msg_Warn( p_input, "cannot skip data, EOF ?" );
 749             return( 0 );
 750         }
 751     }
 752
 753     return( 1 );
 754
 755 loop_error_recovery:
 756     msg_Warn( p_input, "unsupported packet header" );
 757     if( p_demux->p_fp->i_min_data_packet_size != p_demux->p_fp->i_max_data_packet_size )
 758     {
 759         msg_Err( p_input, "unsupported packet header, fatal error" );
 760         return( -1 );
 761     }
 762     ASF_SkipBytes( p_input, i_data_packet_min );
 763
 764     return( 1 );
 765 }
 766
 767 static int Demux( input_thread_t *p_input )
 768 {
 769     demux_sys_t *p_demux = p_input->p_demux_data;
 770     vlc_bool_t b_play_audio;
 771     int i;
 772
 773     /* catch seek from user */
 774     if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
 775     {
 776         off_t i_offset;
 777
 778         msleep( DEFAULT_PTS_DELAY );
 779         i_offset = ASF_TellAbsolute( p_input ) - p_demux->i_data_begin;
 780
 781         if( i_offset  < 0 )
 782         {
 783             i_offset = 0;
 784         }
 785         /* XXX work only when i_min_data_packet_size == i_max_data_packet_size */
 786         i_offset += p_demux->p_fp->i_min_data_packet_size -
 787                         i_offset % p_demux->p_fp->i_min_data_packet_size;
 788         ASF_SeekAbsolute( p_input, p_demux->i_data_begin + i_offset );
 789
 790         p_demux->i_time = -1;
 791         for( i = 0; i < 128 ; i++ )
 792         {
 793 #define p_stream p_demux->stream[i]
 794             if( p_stream )
 795             {
 796                 p_stream->i_time = -1;
 797             }
 798 #undef p_stream
 799         }
 800     }
 801
 802     vlc_mutex_lock( &p_input->stream.stream_lock );
 803     if( p_input->stream.control.i_rate == DEFAULT_RATE )
 804     {
 805         b_play_audio = VLC_TRUE;
 806     }
 807     else
 808     {
 809         int i;
 810
 811         b_play_audio = VLC_TRUE;
 812         for( i = 0; i < 128; i++ )
 813         {
 814             if( p_demux->stream[i] &&
 815                 p_demux->stream[i]->i_cat == VIDEO_ES &&
 816                 p_demux->stream[i]->p_es &&
 817                 p_demux->stream[i]->p_es->p_decoder_fifo )
 818             {
 819                 /* there is at least ine video track so no need to play audio */
 820                 b_play_audio = VLC_FALSE;
 821             }
 822         }
 823     }
 824     vlc_mutex_unlock( &p_input->stream.stream_lock );
 825
 826     for( ;; )
 827     {
 828         mtime_t i_length;
 829         mtime_t i_time_begin = GetMoviePTS( p_demux );
 830         int i_result;
 831
 832         if( ( i_result = DemuxPacket( p_input, b_play_audio ) ) <= 0 )
 833         {
 834             return i_result;
 835         }
 836         if( i_time_begin == -1 )
 837         {
 838             i_time_begin = GetMoviePTS( p_demux );
 839         }
 840         else
 841         {
 842             i_length = GetMoviePTS( p_demux ) - i_time_begin;
 843             if( i_length < 0 || i_length >= 40 * 1000 )
 844             {
 845                 break;
 846             }
 847         }
 848     }
 849
 850     p_demux->i_time = GetMoviePTS( p_demux );
 851     if( p_demux->i_time >= 0 )
 852     {
 853         /* update pcr XXX in mpeg scale so in 90000 unit/s */
 854         p_demux->i_pcr = p_demux->i_time * 9 / 100;
 855
 856         /* first wait for the good time to read next packets */
 857         input_ClockManageRef( p_input,
 858                               p_input->stream.p_selected_program,
 859                               p_demux->i_pcr );
 860     }
 861
 862     return( 1 );
 863 }
 864
 865 /*****************************************************************************
 866  * MP4End: frees unused data
 867  *****************************************************************************/
 868 static void Deactivate( vlc_object_t * p_this )
 869 {
 870 #define FREE( p ) \
 871     if( p ) { free( p ); }
 872
 873     input_thread_t *  p_input = (input_thread_t *)p_this;
 874     demux_sys_t *p_demux = p_input->p_demux_data;
 875     int i_stream;
 876
 877     msg_Dbg( p_input, "Freeing all memory" );
 878     ASF_FreeObjectRoot( p_input, &p_demux->root );
 879     for( i_stream = 0; i_stream < 128; i_stream++ )
 880     {
 881 #define p_stream p_demux->stream[i_stream]
 882         if( p_stream )
 883         {
 884             if( p_stream->p_pes )
 885             {
 886                 input_DeletePES( p_input->p_method_data, p_stream->p_pes );
 887             }
 888             free( p_stream );
 889         }
 890 #undef p_stream
 891     }
 892     FREE( p_input->p_demux_data );
 893 #undef FREE
 894 }
 895