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

   1 /*****************************************************************************
   2  * avi.c : AVI file Stream input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: avi.c,v 1.16 2002/12/04 15:47:31 fenrir 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 "video.h"
  35
  36 #include "libavi.h"
  37
  38 #define __AVI_SUBTITLE__ 1
  39
  40 #ifdef __AVI_SUBTITLE__
  41 #   include "../util/sub.h"
  42 #endif
  43 #include "avi.h"
  44
  45 /*****************************************************************************
  46  * Local prototypes
  47  *****************************************************************************/
  48 static int    AVIInit   ( vlc_object_t * );
  49 static void __AVIEnd    ( vlc_object_t * );
  50 static int    AVISeek   ( input_thread_t *, mtime_t, int );
  51 static int    AVIDemux_Seekable  ( input_thread_t * );
  52 static int    AVIDemux_UnSeekable( input_thread_t *p_input );
  53
  54 #define AVIEnd(a) __AVIEnd(VLC_OBJECT(a))
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 vlc_module_begin();
  60     add_category_hint( "demuxer", NULL );
  61         add_bool( "avi-interleaved", 0, NULL,
  62                   "force interleaved method",
  63                   "force interleaved method" );
  64         add_bool( "avi-index", 0, NULL,
  65                   "force index creation",
  66                   "force index creation" );
  67
  68     set_description( "avi demuxer" );
  69     set_capability( "demux", 212 );
  70     set_callbacks( AVIInit, __AVIEnd );
  71 vlc_module_end();
  72
  73 /*****************************************************************************
  74  * Some useful functions to manipulate memory
  75  *****************************************************************************/
  76
  77 static uint16_t GetWLE( uint8_t *p_buff )
  78 {
  79     return (uint16_t)p_buff[0] | ( ((uint16_t)p_buff[1]) << 8 );
  80 }
  81
  82 static uint32_t GetDWLE( uint8_t *p_buff )
  83 {
  84     return (uint32_t)p_buff[0] | ( ((uint32_t)p_buff[1]) << 8 ) |
  85             ( ((uint32_t)p_buff[2]) << 16 ) | ( ((uint32_t)p_buff[3]) << 24 );
  86 }
  87
  88 static uint32_t GetDWBE( uint8_t *p_buff )
  89 {
  90     return (uint32_t)p_buff[3] | ( ((uint32_t)p_buff[2]) << 8 ) |
  91             ( ((uint32_t)p_buff[1]) << 16 ) | ( ((uint32_t)p_buff[0]) << 24 );
  92 }
  93 static vlc_fourcc_t GetFOURCC( byte_t *p_buff )
  94 {
  95     return VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] );
  96 }
  97
  98 static inline off_t __EVEN( off_t i )
  99 {
 100     return (i & 1) ? i + 1 : i;
 101 }
 102
 103 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
 104
 105 /* read data in a pes */
 106 static int input_ReadInPES( input_thread_t *p_input,
 107                             pes_packet_t **pp_pes,
 108                             int i_size )
 109 {
 110     pes_packet_t *p_pes;
 111     data_packet_t *p_data;
 112
 113
 114     if( !(p_pes = input_NewPES( p_input->p_method_data ) ) )
 115     {
 116         pp_pes = NULL;
 117         return -1;
 118     }
 119
 120     *pp_pes = p_pes;
 121
 122     if( !i_size )
 123     {
 124         p_pes->p_first =
 125             p_pes->p_last  =
 126                 input_NewPacket( p_input->p_method_data, 0 );
 127         p_pes->i_nb_data = 1;
 128         p_pes->i_pes_size = 0;
 129         return 0;
 130     }
 131
 132     p_pes->i_nb_data = 0;
 133     p_pes->i_pes_size = 0;
 134
 135     while( p_pes->i_pes_size < i_size )
 136     {
 137         int i_read;
 138
 139         i_read = input_SplitBuffer(p_input,
 140                                    &p_data,
 141                                    __MIN( i_size -
 142                                           p_pes->i_pes_size, 1024 ) );
 143         if( i_read <= 0 )
 144         {
 145             return p_pes->i_pes_size;
 146         }
 147
 148         if( !p_pes->p_first )
 149         {
 150             p_pes->p_first = p_data;
 151         }
 152         else
 153         {
 154             p_pes->p_last->p_next = p_data;
 155         }
 156         p_pes->p_last = p_data;
 157         p_pes->i_nb_data++;
 158         p_pes->i_pes_size += i_read;
 159     }
 160
 161
 162     return p_pes->i_pes_size;
 163 }
 164
 165 /* Test if it seems that it's a key frame */
 166 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
 167 {
 168     switch( i_fourcc )
 169     {
 170         case FOURCC_DIV1:
 171             /* we have:
 172              *  startcode:      0x00000100   32bits
 173              *  framenumber     ?             5bits
 174              *  piture type     0(I),1(P)     2bits
 175              */
 176             if( GetDWBE( p_byte ) != 0x00000100 )
 177             {
 178                 /* it's not an msmpegv1 stream, strange...*/
 179                 return AVIIF_KEYFRAME;
 180             }
 181             else
 182             {
 183                 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
 184             }
 185         case FOURCC_DIV2:
 186         case FOURCC_DIV3:   // wmv1 also
 187             /* we have
 188              *  picture type    0(I),1(P)     2bits
 189              */
 190             return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
 191         case FOURCC_mp4v:
 192             /* we should find first occurence of 0x000001b6 (32bits)
 193              *  startcode:      0x000001b6   32bits
 194              *  piture type     0(I),1(P)     2bits
 195              */
 196             if( GetDWBE( p_byte ) != 0x000001b6 )
 197             {
 198                 /* not true , need to find the first VOP header */
 199                 return AVIIF_KEYFRAME;
 200             }
 201             else
 202             {
 203                 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
 204             }
 205         default:
 206             /* I can't do it, so say yes */
 207             return AVIIF_KEYFRAME;
 208     }
 209 }
 210
 211 vlc_fourcc_t AVI_FourccGetCodec( int i_cat, vlc_fourcc_t i_codec )
 212 {
 213     switch( i_cat )
 214     {
 215         case AUDIO_ES:
 216             switch( i_codec )
 217             {
 218                 case WAVE_FORMAT_PCM:
 219                     return VLC_FOURCC( 'a', 'r', 'a', 'w' );
 220                 case WAVE_FORMAT_MPEG:
 221                 case WAVE_FORMAT_MPEGLAYER3:
 222                     return VLC_FOURCC( 'm', 'p', 'g', 'a' );
 223                 case WAVE_FORMAT_A52:
 224                     return VLC_FOURCC( 'a', '5', '2', ' ' );
 225                 case WAVE_FORMAT_WMA1:
 226                     return VLC_FOURCC( 'w', 'm', 'a', '1' );
 227                 case WAVE_FORMAT_WMA2:
 228                     return VLC_FOURCC( 'w', 'm', 'a', '2' );
 229                 default:
 230                     return VLC_FOURCC( 'm', 's',
 231                                        ( i_codec >> 8 )&0xff, i_codec&0xff );
 232             }
 233         case VIDEO_ES:
 234             // XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4
 235             switch( i_codec )
 236             {
 237                 case FOURCC_DIV1:
 238                 case FOURCC_div1:
 239                 case FOURCC_MPG4:
 240                 case FOURCC_mpg4:
 241                     return FOURCC_DIV1;
 242                 case FOURCC_DIV2:
 243                 case FOURCC_div2:
 244                 case FOURCC_MP42:
 245                 case FOURCC_mp42:
 246                 case FOURCC_MPG3:
 247                 case FOURCC_mpg3:
 248                     return FOURCC_DIV2;
 249                 case FOURCC_div3:
 250                 case FOURCC_MP43:
 251                 case FOURCC_mp43:
 252                 case FOURCC_DIV3:
 253                 case FOURCC_DIV4:
 254                 case FOURCC_div4:
 255                 case FOURCC_DIV5:
 256                 case FOURCC_div5:
 257                 case FOURCC_DIV6:
 258                 case FOURCC_div6:
 259                 case FOURCC_AP41:
 260                 case FOURCC_3IV1:
 261                     return FOURCC_DIV3;
 262                 case FOURCC_DIVX:
 263                 case FOURCC_divx:
 264                 case FOURCC_MP4S:
 265                 case FOURCC_mp4s:
 266                 case FOURCC_M4S2:
 267                 case FOURCC_m4s2:
 268                 case FOURCC_xvid:
 269                 case FOURCC_XVID:
 270                 case FOURCC_XviD:
 271                 case FOURCC_DX50:
 272                 case FOURCC_mp4v:
 273                 case FOURCC_4:
 274                     return FOURCC_mp4v;
 275             }
 276         default:
 277             return VLC_FOURCC( 'u', 'n', 'd', 'f' );
 278     }
 279 }
 280
 281 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
 282                                    int *pi_number, int *pi_type )
 283 {
 284 #define SET_PTR( p, v ) if( p ) *(p) = (v);
 285     int c1, c2;
 286
 287     c1 = ((uint8_t *)&i_id)[0];
 288     c2 = ((uint8_t *)&i_id)[1];
 289
 290     if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
 291     {
 292         SET_PTR( pi_number, 100 ); /* > max stream number */
 293         SET_PTR( pi_type, UNKNOWN_ES );
 294     }
 295     else
 296     {
 297         SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
 298         switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
 299         {
 300             case AVITWOCC_wb:
 301                 SET_PTR( pi_type, AUDIO_ES );
 302                 break;
 303             case AVITWOCC_dc:
 304             case AVITWOCC_db:
 305                 SET_PTR( pi_type, VIDEO_ES );
 306                 break;
 307             default:
 308                 SET_PTR( pi_type, UNKNOWN_ES );
 309                 break;
 310         }
 311     }
 312 #undef SET_PTR
 313 }
 314
 315 static int AVI_PacketGetHeader( input_thread_t *p_input, avi_packet_t *p_pk )
 316 {
 317     uint8_t  *p_peek;
 318
 319     if( input_Peek( p_input, &p_peek, 16 ) < 16 )
 320     {
 321         return VLC_EGENERIC;
 322     }
 323     p_pk->i_fourcc  = GetFOURCC( p_peek );
 324     p_pk->i_size    = GetDWLE( p_peek + 4 );
 325     p_pk->i_pos     = AVI_TellAbsolute( p_input );
 326     if( p_pk->i_fourcc == AVIFOURCC_LIST )
 327     {
 328         p_pk->i_type = GetFOURCC( p_peek + 8 );
 329     }
 330     else
 331     {
 332         p_pk->i_type = 0;
 333     }
 334
 335     memcpy( p_pk->i_peek, p_peek + 8, 8 );
 336
 337     AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
 338     return VLC_SUCCESS;
 339 }
 340
 341 static int AVI_PacketNext( input_thread_t *p_input )
 342 {
 343     avi_packet_t    avi_ck;
 344
 345     if( AVI_PacketGetHeader( p_input, &avi_ck ) )
 346     {
 347         return VLC_EGENERIC;
 348     }
 349     if( avi_ck.i_fourcc == AVIFOURCC_LIST && avi_ck.i_type == AVIFOURCC_rec )
 350     {
 351         return AVI_SkipBytes( p_input, 12 );
 352     }
 353     else
 354     {
 355         return AVI_SkipBytes( p_input, __EVEN( avi_ck.i_size ) + 8 );
 356     }
 357 }
 358 static int AVI_PacketRead( input_thread_t   *p_input,
 359                            avi_packet_t     *p_pk,
 360                            pes_packet_t     **pp_pes )
 361 {
 362     int i_size;
 363     vlc_bool_t b_pad;
 364
 365     i_size = __EVEN( p_pk->i_size + 8 );
 366     b_pad  = ( i_size != p_pk->i_size + 8 );
 367
 368     if( input_ReadInPES( p_input, pp_pes, i_size ) != i_size )
 369     {
 370         return VLC_EGENERIC;
 371     }
 372     (*pp_pes)->p_first->p_payload_start += 8;
 373     (*pp_pes)->i_pes_size -= 8;
 374
 375     if( b_pad )
 376     {
 377         (*pp_pes)->p_last->p_payload_end--;
 378         (*pp_pes)->i_pes_size--;
 379     }
 380
 381     return VLC_SUCCESS;
 382 }
 383
 384 static int AVI_PacketSearch( input_thread_t *p_input )
 385 {
 386     demux_sys_t     *p_avi = p_input->p_demux_data;
 387
 388     avi_packet_t    avi_pk;
 389     for( ;; )
 390     {
 391         if( AVI_SkipBytes( p_input, 1 ) )
 392         {
 393             return VLC_EGENERIC;
 394         }
 395         AVI_PacketGetHeader( p_input, &avi_pk );
 396         if( avi_pk.i_stream < p_avi->i_streams &&
 397             ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
 398         {
 399             return VLC_SUCCESS;
 400         }
 401         switch( avi_pk.i_fourcc )
 402         {
 403             case AVIFOURCC_JUNK:
 404             case AVIFOURCC_LIST:
 405             case AVIFOURCC_idx1:
 406                 return VLC_SUCCESS;
 407         }
 408     }
 409 }
 410
 411
 412 static void __AVI_AddEntryIndex( avi_stream_t *p_info,
 413                                  AVIIndexEntry_t *p_index)
 414 {
 415     if( p_info->p_index == NULL )
 416     {
 417         p_info->i_idxmax = 16384;
 418         p_info->i_idxnb = 0;
 419         if( !( p_info->p_index = calloc( p_info->i_idxmax,
 420                                   sizeof( AVIIndexEntry_t ) ) ) )
 421         {
 422             return;
 423         }
 424     }
 425     if( p_info->i_idxnb >= p_info->i_idxmax )
 426     {
 427         p_info->i_idxmax += 16384;
 428         if( !( p_info->p_index = realloc( (void*)p_info->p_index,
 429                            p_info->i_idxmax *
 430                            sizeof( AVIIndexEntry_t ) ) ) )
 431         {
 432             return;
 433         }
 434     }
 435     /* calculate cumulate length */
 436     if( p_info->i_idxnb > 0 )
 437     {
 438         p_index->i_lengthtotal =
 439             p_info->p_index[p_info->i_idxnb - 1].i_length +
 440                 p_info->p_index[p_info->i_idxnb - 1].i_lengthtotal;
 441     }
 442     else
 443     {
 444         p_index->i_lengthtotal = 0;
 445     }
 446
 447     p_info->p_index[p_info->i_idxnb] = *p_index;
 448     p_info->i_idxnb++;
 449
 450 }
 451
 452 static void AVI_IndexAddEntry( demux_sys_t *p_avi,
 453                                int i_stream,
 454                                AVIIndexEntry_t *p_index)
 455 {
 456     __AVI_AddEntryIndex( p_avi->pp_info[i_stream],
 457                          p_index );
 458     if( p_avi->i_movi_lastchunk_pos < p_index->i_pos )
 459     {
 460         p_avi->i_movi_lastchunk_pos = p_index->i_pos;
 461     }
 462 }
 463
 464 static void AVI_IndexLoad( input_thread_t *p_input )
 465 {
 466     demux_sys_t *p_avi = p_input->p_demux_data;
 467
 468     avi_chunk_list_t    *p_riff;
 469     avi_chunk_list_t    *p_movi;
 470     avi_chunk_idx1_t    *p_idx1;
 471
 472     int i_stream;
 473     int i_index;
 474     off_t   i_offset;
 475
 476     p_riff = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 477                                                AVIFOURCC_RIFF, 0);
 478
 479     p_idx1 = (avi_chunk_idx1_t*)AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
 480     p_movi = (avi_chunk_list_t*)AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
 481
 482     if( !p_idx1 )
 483     {
 484         msg_Warn( p_input, "cannot find idx1 chunk, no index defined" );
 485         return;
 486     }
 487     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 488     {
 489         p_avi->pp_info[i_stream]->i_idxnb  = 0;
 490         p_avi->pp_info[i_stream]->i_idxmax = 0;
 491         p_avi->pp_info[i_stream]->p_index  = NULL;
 492     }
 493     /* *** calculate offset *** */
 494     if( p_idx1->i_entry_count > 0 &&
 495         p_idx1->entry[0].i_pos < p_movi->i_chunk_pos )
 496     {
 497         i_offset = p_movi->i_chunk_pos + 8;
 498     }
 499     else
 500     {
 501         i_offset = 0;
 502     }
 503
 504     for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
 505     {
 506         int i_cat;
 507
 508         AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
 509                                &i_stream,
 510                                &i_cat );
 511         if( i_stream < p_avi->i_streams &&
 512             i_cat == p_avi->pp_info[i_stream]->i_cat )
 513         {
 514             AVIIndexEntry_t index;
 515             index.i_id      = p_idx1->entry[i_index].i_fourcc;
 516             index.i_flags   =
 517                 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
 518             index.i_pos     = p_idx1->entry[i_index].i_pos + i_offset;
 519             index.i_length  = p_idx1->entry[i_index].i_length;
 520             AVI_IndexAddEntry( p_avi, i_stream, &index );
 521         }
 522     }
 523     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 524     {
 525         msg_Dbg( p_input,
 526                 "stream[%d] creating %d index entries",
 527                 i_stream,
 528                 p_avi->pp_info[i_stream]->i_idxnb );
 529     }
 530
 531 }
 532
 533 static void AVI_IndexCreate( input_thread_t *p_input )
 534 {
 535     demux_sys_t *p_avi = p_input->p_demux_data;
 536
 537     avi_chunk_list_t    *p_riff;
 538     avi_chunk_list_t    *p_movi;
 539
 540     int i_stream;
 541     off_t   i_movi_end;
 542
 543     p_riff = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 544                                                AVIFOURCC_RIFF, 0);
 545     p_movi = (avi_chunk_list_t*)AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
 546
 547     if( !p_movi )
 548     {
 549         msg_Err( p_input, "cannot find p_movi" );
 550         return;
 551     }
 552
 553     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 554     {
 555         p_avi->pp_info[i_stream]->i_idxnb  = 0;
 556         p_avi->pp_info[i_stream]->i_idxmax = 0;
 557         p_avi->pp_info[i_stream]->p_index  = NULL;
 558     }
 559     i_movi_end = __MIN( p_movi->i_chunk_pos + p_movi->i_chunk_size,
 560                         p_input->stream.p_selected_area->i_size );
 561
 562     AVI_SeekAbsolute( p_input, p_movi->i_chunk_pos + 12);
 563     msg_Warn( p_input, "creating index from LIST-movi, will take time !" );
 564     for( ;; )
 565     {
 566         avi_packet_t pk;
 567
 568         if( AVI_PacketGetHeader( p_input, &pk ) )
 569         {
 570             break;
 571         }
 572         if( pk.i_stream < p_avi->i_streams &&
 573             pk.i_cat == p_avi->pp_info[pk.i_stream]->i_cat )
 574         {
 575             AVIIndexEntry_t index;
 576             index.i_id      = pk.i_fourcc;
 577             index.i_flags   =
 578                AVI_GetKeyFlag(p_avi->pp_info[pk.i_stream]->i_codec, pk.i_peek);
 579             index.i_pos     = pk.i_pos;
 580             index.i_length  = pk.i_size;
 581             AVI_IndexAddEntry( p_avi, pk.i_stream, &index );
 582         }
 583         else
 584         {
 585             switch( pk.i_fourcc )
 586             {
 587                 case AVIFOURCC_idx1:
 588                     goto print_stat;
 589                 case AVIFOURCC_rec:
 590                 case AVIFOURCC_JUNK:
 591                     break;
 592                 default:
 593                     msg_Warn( p_input, "need resync, probably broken avi" );
 594                     if( AVI_PacketSearch( p_input ) )
 595                     {
 596                         msg_Warn( p_input, "lost sync, abord index creation" );
 597                         goto print_stat;
 598                     }
 599             }
 600         }
 601         if( pk.i_pos + pk.i_size >= i_movi_end ||
 602             AVI_PacketNext( p_input ) )
 603         {
 604             break;
 605         }
 606     }
 607
 608 print_stat:
 609     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 610     {
 611         msg_Dbg( p_input,
 612                 "stream[%d] creating %d index entries",
 613                 i_stream,
 614                 p_avi->pp_info[i_stream]->i_idxnb );
 615     }
 616 }
 617
 618
 619 /*****************************************************************************
 620  * Stream management
 621  *****************************************************************************/
 622 static vlc_bool_t AVI_StreamStart ( input_thread_t *, demux_sys_t *, int );
 623 static int  AVI_StreamSeek   ( input_thread_t *, demux_sys_t *, int, mtime_t );
 624 static void AVI_StreamStop   ( input_thread_t *, demux_sys_t *, int );
 625
 626 static vlc_bool_t AVI_StreamStart( input_thread_t *p_input,
 627                                    demux_sys_t *p_avi, int i_stream )
 628 {
 629 #define p_stream    p_avi->pp_info[i_stream]
 630     if( !p_stream->p_es )
 631     {
 632         msg_Warn( p_input, "stream[%d] unselectable", i_stream );
 633         return VLC_FALSE;
 634     }
 635     if( p_stream->b_activated )
 636     {
 637         msg_Warn( p_input, "stream[%d] already selected", i_stream );
 638         return VLC_TRUE;
 639     }
 640
 641     if( !p_stream->p_es->p_decoder_fifo )
 642     {
 643         vlc_mutex_lock( &p_input->stream.stream_lock );
 644         input_SelectES( p_input, p_stream->p_es );
 645         vlc_mutex_unlock( &p_input->stream.stream_lock );
 646     }
 647     p_stream->b_activated = p_stream->p_es->p_decoder_fifo ? VLC_TRUE
 648                                                            : VLC_FALSE;
 649     if( p_stream->b_activated && p_avi->b_seekable)
 650     {
 651         AVI_StreamSeek( p_input, p_avi, i_stream, p_avi->i_time );
 652     }
 653
 654     return p_stream->b_activated;
 655 #undef  p_stream
 656 }
 657
 658 static void    AVI_StreamStop( input_thread_t *p_input,
 659                                demux_sys_t *p_avi, int i_stream )
 660 {
 661 #define p_stream    p_avi->pp_info[i_stream]
 662
 663     if( !p_stream->b_activated )
 664     {
 665         msg_Warn( p_input, "stream[%d] already unselected", i_stream );
 666         return;
 667     }
 668
 669     if( p_stream->p_es->p_decoder_fifo )
 670     {
 671         vlc_mutex_lock( &p_input->stream.stream_lock );
 672         input_UnselectES( p_input, p_stream->p_es );
 673         vlc_mutex_unlock( &p_input->stream.stream_lock );
 674     }
 675
 676
 677     p_stream->b_activated = VLC_FALSE;
 678
 679 #undef  p_stream
 680 }
 681
 682 /****************************************************************************
 683  * AVI_MovieGetLength give max streams length in second
 684  ****************************************************************************/
 685 static mtime_t  AVI_MovieGetLength( input_thread_t *p_input, demux_sys_t *p_avi )
 686 {
 687     int i_stream;
 688     mtime_t i_maxlength;
 689
 690     i_maxlength = 0;
 691     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 692     {
 693 #define p_stream  p_avi->pp_info[i_stream]
 694         mtime_t i_length;
 695         /* fix length for each stream */
 696         if( p_stream->i_idxnb < 1 || !p_stream->p_index )
 697         {
 698             continue;
 699         }
 700
 701         if( p_stream->i_samplesize )
 702         {
 703             i_length =
 704                 (mtime_t)( p_stream->p_index[p_stream->i_idxnb-1].i_lengthtotal +
 705                            p_stream->p_index[p_stream->i_idxnb-1].i_length ) /
 706                 (mtime_t)p_stream->i_scale /
 707                 (mtime_t)p_stream->i_rate /
 708                 (mtime_t)p_stream->i_samplesize;
 709         }
 710         else
 711         {
 712             i_length = (mtime_t)p_stream->i_idxnb *
 713                        (mtime_t)p_stream->i_scale /
 714                        (mtime_t)p_stream->i_rate;
 715         }
 716
 717         msg_Dbg( p_input,
 718                  "stream[%d] length:"I64Fd" (based on index)",
 719                  i_stream,
 720                  i_length );
 721         i_maxlength = __MAX( i_maxlength, i_length );
 722 #undef p_stream
 723     }
 724
 725     return i_maxlength;
 726 }
 727
 728 /*****************************************************************************
 729  * AVIEnd: frees unused data
 730  *****************************************************************************/
 731 static void __AVIEnd ( vlc_object_t * p_this )
 732 {
 733     input_thread_t *    p_input = (input_thread_t *)p_this;
 734     int i;
 735     demux_sys_t *p_avi = p_input->p_demux_data  ;
 736
 737     if( p_avi->pp_info )
 738     {
 739         for( i = 0; i < p_avi->i_streams; i++ )
 740         {
 741             if( p_avi->pp_info[i] )
 742             {
 743                 if( p_avi->pp_info[i]->p_index )
 744                 {
 745                       free( p_avi->pp_info[i]->p_index );
 746                 }
 747                 free( p_avi->pp_info[i] );
 748             }
 749         }
 750          free( p_avi->pp_info );
 751     }
 752 #ifdef __AVI_SUBTITLE__
 753     if( p_avi->p_sub )
 754     {
 755         subtitle_Close( p_avi->p_sub );
 756         p_avi->p_sub = NULL;
 757     }
 758 #endif
 759     AVI_ChunkFreeRoot( p_input, &p_avi->ck_root );
 760 }
 761
 762 /*****************************************************************************
 763  * AVIInit: check file and initializes AVI structures
 764  *****************************************************************************/
 765 static int AVIInit( vlc_object_t * p_this )
 766 {
 767     input_thread_t *    p_input = (input_thread_t *)p_this;
 768     avi_chunk_t         ck_riff;
 769     avi_chunk_list_t    *p_riff = (avi_chunk_list_t*)&ck_riff;
 770     avi_chunk_list_t    *p_hdrl, *p_movi;
 771 #if 0
 772     avi_chunk_list_t    *p_INFO;
 773     avi_chunk_strz_t    *p_name;
 774 #endif
 775     avi_chunk_avih_t    *p_avih;
 776     demux_sys_t *p_avi;
 777     es_descriptor_t *p_es = NULL; /* avoid warning */
 778     int i;
 779 #ifdef __AVI_SUBTITLE__
 780     mtime_t i_microsecperframe = 0; // for some subtitle format
 781 #endif
 782
 783     vlc_bool_t b_stream_audio, b_stream_video;
 784
 785     p_input->pf_demux = AVIDemux_Seekable;
 786     if( AVI_TestFile( p_input ) )
 787     {
 788         msg_Warn( p_input, "avi module discarded (invalid headr)" );
 789         return VLC_EGENERIC;
 790     }
 791
 792     /* Initialize access plug-in structures. */
 793     if( p_input->i_mtu == 0 )
 794     {
 795         /* Improve speed. */
 796         p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
 797     }
 798
 799     if( !( p_input->p_demux_data =
 800                     p_avi = malloc( sizeof(demux_sys_t) ) ) )
 801     {
 802         msg_Err( p_input, "out of memory" );
 803         return VLC_ENOMEM;
 804     }
 805     memset( p_avi, 0, sizeof( demux_sys_t ) );
 806     p_avi->i_time = 0;
 807     p_avi->i_pcr  = 0;
 808     p_avi->b_seekable = ( ( p_input->stream.b_seekable )
 809                         &&( p_input->stream.i_method == INPUT_METHOD_FILE ) );
 810     p_avi->i_movi_lastchunk_pos = 0;
 811
 812     /* *** for unseekable stream, automaticaly use AVIDemux_interleaved *** */
 813     if( !p_avi->b_seekable || config_GetInt( p_input, "avi-interleaved" ) )
 814     {
 815         p_input->pf_demux = AVIDemux_UnSeekable;
 816     }
 817
 818     if( AVI_ChunkReadRoot( p_input, &p_avi->ck_root, p_avi->b_seekable ) )
 819     {
 820         msg_Err( p_input, "avi module discarded (invalid file)" );
 821         return VLC_EGENERIC;
 822     }
 823     AVI_ChunkDumpDebug( p_input, &p_avi->ck_root );
 824
 825
 826     p_riff  = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 827                                                 AVIFOURCC_RIFF, 0 );
 828     p_hdrl  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 829                                                 AVIFOURCC_hdrl, 0 );
 830     p_movi  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 831                                                 AVIFOURCC_movi, 0 );
 832 #if 0
 833     p_INFO  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 834                                                 AVIFOURCC_INFO, 0 );
 835     p_name  = (avi_chunk_strz_t*)AVI_ChunkFind( p_INFO,
 836                                                 AVIFOURCC_INAM, 0 );
 837     if( p_name )
 838     {
 839
 840     }
 841 #endif
 842
 843     if( !p_hdrl || !p_movi )
 844     {
 845         msg_Err( p_input, "avi module discarded (invalid file)" );
 846         return VLC_EGENERIC;
 847     }
 848
 849     if( !( p_avih = (avi_chunk_avih_t*)AVI_ChunkFind( p_hdrl,
 850                                                       AVIFOURCC_avih, 0 ) ) )
 851     {
 852         msg_Err( p_input, "cannot find avih chunk" );
 853         return VLC_EGENERIC;
 854     }
 855     p_avi->i_streams = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
 856     if( p_avih->i_streams != p_avi->i_streams )
 857     {
 858         msg_Warn( p_input,
 859                   "found %d stream but %d are declared",
 860                   p_avi->i_streams,
 861                   p_avih->i_streams );
 862     }
 863     if( p_avi->i_streams == 0 )
 864     {
 865         AVIEnd( p_input );
 866         msg_Err( p_input, "no stream defined!" );
 867         return VLC_EGENERIC;
 868     }
 869
 870     /*  create one program */
 871     vlc_mutex_lock( &p_input->stream.stream_lock );
 872     if( input_InitStream( p_input, 0 ) == -1)
 873     {
 874         vlc_mutex_unlock( &p_input->stream.stream_lock );
 875         AVIEnd( p_input );
 876         msg_Err( p_input, "cannot init stream" );
 877         return VLC_EGENERIC;
 878     }
 879     if( input_AddProgram( p_input, 0, 0) == NULL )
 880     {
 881         vlc_mutex_unlock( &p_input->stream.stream_lock );
 882         AVIEnd( p_input );
 883         msg_Err( p_input, "cannot add program" );
 884         return VLC_EGENERIC;
 885     }
 886     p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 887     vlc_mutex_unlock( &p_input->stream.stream_lock );
 888
 889     /* print informations on streams */
 890     msg_Dbg( p_input, "AVIH: %d stream, flags %s%s%s%s ",
 891              p_avi->i_streams,
 892              p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 893              p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 894              p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 895              p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 896
 897     /* now read info on each stream and create ES */
 898     p_avi->pp_info = calloc( p_avi->i_streams,
 899                             sizeof( avi_stream_t* ) );
 900     memset( p_avi->pp_info,
 901             0,
 902             sizeof( avi_stream_t* ) * p_avi->i_streams );
 903
 904     for( i = 0 ; i < p_avi->i_streams; i++ )
 905     {
 906         avi_chunk_list_t    *p_avi_strl;
 907         avi_chunk_strh_t    *p_avi_strh;
 908         avi_chunk_strf_auds_t    *p_avi_strf_auds;
 909         avi_chunk_strf_vids_t    *p_avi_strf_vids;
 910         int     i_init_size;
 911         void    *p_init_data;
 912 #define p_info  p_avi->pp_info[i]
 913         p_info = malloc( sizeof(avi_stream_t ) );
 914         memset( p_info, 0, sizeof( avi_stream_t ) );
 915
 916         p_avi_strl = (avi_chunk_list_t*)AVI_ChunkFind( p_hdrl,
 917                                                        AVIFOURCC_strl, i );
 918         p_avi_strh = (avi_chunk_strh_t*)AVI_ChunkFind( p_avi_strl,
 919                                                        AVIFOURCC_strh, 0 );
 920         p_avi_strf_auds = (avi_chunk_strf_auds_t*)
 921             p_avi_strf_vids = (avi_chunk_strf_vids_t*)
 922                 AVI_ChunkFind( p_avi_strl, AVIFOURCC_strf, 0 );
 923
 924         if( !p_avi_strl || !p_avi_strh ||
 925                 ( !p_avi_strf_auds && !p_avi_strf_vids ) )
 926         {
 927             msg_Warn( p_input, "stream[%d] incomlete", i );
 928             continue;
 929         }
 930
 931         /* *** Init p_info *** */
 932         p_info->i_rate  = p_avi_strh->i_rate;
 933         p_info->i_scale = p_avi_strh->i_scale;
 934         p_info->i_samplesize = p_avi_strh->i_samplesize;
 935
 936         switch( p_avi_strh->i_type )
 937         {
 938             case( AVIFOURCC_auds ):
 939                 p_info->i_cat = AUDIO_ES;
 940                 p_info->i_fourcc =
 941                     AVI_FourccGetCodec( AUDIO_ES,
 942                                         p_avi_strf_auds->p_wf->wFormatTag );
 943                 p_info->i_codec  = p_info->i_fourcc;
 944                 i_init_size = p_avi_strf_auds->i_chunk_size;
 945                 p_init_data = p_avi_strf_auds->p_wf;
 946                 msg_Dbg( p_input, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
 947                         i,
 948                         p_avi_strf_auds->p_wf->wFormatTag,
 949                         p_avi_strf_auds->p_wf->nChannels,
 950                         p_avi_strf_auds->p_wf->nSamplesPerSec,
 951                         p_avi_strf_auds->p_wf->wBitsPerSample );
 952                 break;
 953
 954             case( AVIFOURCC_vids ):
 955                 p_info->i_cat = VIDEO_ES;
 956                 /* XXX quick hack for playing ffmpeg video, I don't know
 957                     who is doing something wrong */
 958                 p_info->i_samplesize = 0;
 959                 p_info->i_fourcc = p_avi_strf_vids->p_bih->biCompression;
 960                 p_info->i_codec =
 961                     AVI_FourccGetCodec( VIDEO_ES, p_info->i_fourcc );
 962                 i_init_size = p_avi_strf_vids->i_chunk_size;
 963                 p_init_data = p_avi_strf_vids->p_bih;
 964                 msg_Dbg( p_input, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
 965                         i,
 966                          (char*)&p_avi_strf_vids->p_bih->biCompression,
 967                          p_avi_strf_vids->p_bih->biWidth,
 968                          p_avi_strf_vids->p_bih->biHeight,
 969                          p_avi_strf_vids->p_bih->biBitCount,
 970                          (float)p_info->i_rate /
 971                              (float)p_info->i_scale );
 972 #ifdef __AVI_SUBTITLE__
 973                 if( i_microsecperframe == 0 )
 974                 {
 975                     i_microsecperframe = (mtime_t)1000000 *
 976                                          (mtime_t)p_info->i_scale /
 977                                          (mtime_t)p_info->i_rate;
 978                 }
 979 #endif
 980                 break;
 981             default:
 982                 msg_Err( p_input, "stream[%d] unknown type", i );
 983                 p_info->i_cat = UNKNOWN_ES;
 984                 i_init_size = 0;
 985                 p_init_data = NULL;
 986                 break;
 987         }
 988         p_info->b_activated = VLC_FALSE;
 989         /* add one ES */
 990         vlc_mutex_lock( &p_input->stream.stream_lock );
 991         p_info->p_es =
 992             p_es = input_AddES( p_input,
 993                                 p_input->stream.p_selected_program, 1+i,
 994                                 i_init_size );
 995         vlc_mutex_unlock( &p_input->stream.stream_lock );
 996         p_es->i_stream_id =i; /* XXX: i don't use it */
 997         p_es->i_fourcc = p_info->i_fourcc;
 998         p_es->i_cat = p_info->i_cat;
 999
1000         /* We copy strf for decoder in p_es->p_demux_data */
1001         if( p_init_data )
1002         {
1003             memcpy( p_es->p_demux_data,
1004                     p_init_data,
1005                     i_init_size );
1006         }
1007 #undef p_info
1008     }
1009
1010 #ifdef __AVI_SUBTITLE__
1011     if( ( p_avi->p_sub = subtitle_New( p_input, NULL, i_microsecperframe ) ) )
1012     {
1013         subtitle_Select( p_avi->p_sub );
1014     }
1015 #endif
1016
1017     if( config_GetInt( p_input, "avi-index" ) )
1018     {
1019         if( p_avi->b_seekable )
1020         {
1021             AVI_IndexCreate( p_input );
1022         }
1023         else
1024         {
1025             msg_Warn( p_input, "cannot create index (unseekable stream)" );
1026             AVI_IndexLoad( p_input );
1027         }
1028     }
1029     else
1030     {
1031         AVI_IndexLoad( p_input );
1032     }
1033
1034     /* *** movie length in sec *** */
1035 #if 0
1036     p_avi->i_length = (mtime_t)p_avih->i_totalframes *
1037                       (mtime_t)p_avih->i_microsecperframe /
1038                       (mtime_t)1000000;
1039 #endif
1040
1041     p_avi->i_length = AVI_MovieGetLength( p_input, p_avi );
1042     if( p_avi->i_length < (mtime_t)p_avih->i_totalframes *
1043                           (mtime_t)p_avih->i_microsecperframe /
1044                           (mtime_t)1000000 )
1045     {
1046         msg_Warn( p_input, "broken or missing index, 'seek' will be axproximative or will have strange behavour" );
1047     }
1048
1049     vlc_mutex_lock( &p_input->stream.stream_lock );
1050     if( p_avi->i_length )
1051     {
1052         p_input->stream.i_mux_rate =
1053             p_input->stream.p_selected_area->i_size / 50 / p_avi->i_length;
1054     }
1055     else
1056     {
1057         p_input->stream.i_mux_rate = 0;
1058     }
1059     vlc_mutex_unlock( &p_input->stream.stream_lock );
1060
1061     b_stream_audio = VLC_FALSE;
1062     b_stream_video = VLC_FALSE;
1063
1064     for( i = 0; i < p_avi->i_streams; i++ )
1065     {
1066 #define p_info  p_avi->pp_info[i]
1067         switch( p_info->p_es->i_cat )
1068         {
1069             case( VIDEO_ES ):
1070
1071                 if( !b_stream_video )
1072                 {
1073                     b_stream_video = AVI_StreamStart( p_input, p_avi, i );
1074                 }
1075                 break;
1076
1077             case( AUDIO_ES ):
1078                 if( !b_stream_audio )
1079                 {
1080                     b_stream_audio = AVI_StreamStart( p_input, p_avi, i );
1081                 }
1082                 break;
1083             default:
1084                 break;
1085         }
1086 #undef p_info
1087     }
1088
1089     if( !b_stream_video )
1090     {
1091         msg_Warn( p_input, "no video stream found" );
1092     }
1093     if( !b_stream_audio )
1094     {
1095         msg_Warn( p_input, "no audio stream found!" );
1096     }
1097
1098     vlc_mutex_lock( &p_input->stream.stream_lock );
1099     p_input->stream.p_selected_program->b_is_ok = 1;
1100     vlc_mutex_unlock( &p_input->stream.stream_lock );
1101
1102     if( p_avi->b_seekable )
1103     {
1104         AVI_ChunkGoto( p_input, p_movi );
1105     }
1106     else
1107     {
1108         // already at begining of p_movi
1109     }
1110     AVI_SkipBytes( p_input, 12 ); // enter in p_movi
1111
1112     p_avi->i_movi_begin = p_movi->i_chunk_pos;
1113     return VLC_SUCCESS;
1114 }
1115
1116
1117
1118
1119 /*****************************************************************************
1120  * Function to convert pts to chunk or byte
1121  *****************************************************************************/
1122
1123 static inline mtime_t AVI_PTSToChunk( avi_stream_t *p_info,
1124                                         mtime_t i_pts )
1125 {
1126     return (mtime_t)((int64_t)i_pts *
1127                      (int64_t)p_info->i_rate /
1128                      (int64_t)p_info->i_scale /
1129                      (int64_t)1000000 );
1130 }
1131 static inline mtime_t AVI_PTSToByte( avi_stream_t *p_info,
1132                                        mtime_t i_pts )
1133 {
1134     return (mtime_t)((int64_t)i_pts *
1135                      (int64_t)p_info->i_samplesize *
1136                      (int64_t)p_info->i_rate /
1137                      (int64_t)p_info->i_scale /
1138                      (int64_t)1000000 );
1139
1140 }
1141
1142 static mtime_t AVI_GetDPTS( avi_stream_t *p_stream, int i_count )
1143 {
1144     if( p_stream->i_samplesize )
1145     {
1146         return (mtime_t)( (int64_t)1000000 *
1147                    (int64_t)i_count *
1148                    (int64_t)p_stream->i_scale /
1149                    (int64_t)p_stream->i_rate /
1150                    (int64_t)p_stream->i_samplesize );
1151     }
1152     else
1153     {
1154         return (mtime_t)( (int64_t)1000000 *
1155                    (int64_t)i_count *
1156                    (int64_t)p_stream->i_scale /
1157                    (int64_t)p_stream->i_rate);
1158     }
1159
1160 }
1161
1162 static mtime_t AVI_GetPTS( avi_stream_t *p_info )
1163 {
1164
1165     if( p_info->i_samplesize )
1166     {
1167         /* we need a valid entry we will emulate one */
1168         int i_len;
1169         if( p_info->i_idxposc == p_info->i_idxnb )
1170         {
1171             if( p_info->i_idxposc )
1172             {
1173                 /* use the last entry */
1174                 i_len = p_info->p_index[p_info->i_idxnb - 1].i_lengthtotal
1175                             + p_info->p_index[p_info->i_idxnb - 1].i_length
1176                             + p_info->i_idxposb; /* should be 0 */
1177             }
1178             else
1179             {
1180                 i_len = p_info->i_idxposb;
1181                 /* no valid entry use only offset*/
1182             }
1183         }
1184         else
1185         {
1186             i_len = p_info->p_index[p_info->i_idxposc].i_lengthtotal
1187                                 + p_info->i_idxposb;
1188         }
1189         return (mtime_t)( (int64_t)1000000 *
1190                   (int64_t)i_len *
1191                    (int64_t)p_info->i_scale /
1192                    (int64_t)p_info->i_rate /
1193                    (int64_t)p_info->i_samplesize );
1194     }
1195     else
1196     {
1197         /* even if p_info->i_idxposc isn't valid, there isn't any problem */
1198         return (mtime_t)( (int64_t)1000000 *
1199                    (int64_t)(p_info->i_idxposc ) *
1200                    (int64_t)p_info->i_scale /
1201                    (int64_t)p_info->i_rate);
1202     }
1203 }
1204
1205 static int AVI_StreamChunkFind( input_thread_t *p_input,
1206                                 int i_stream )
1207 {
1208     demux_sys_t *p_avi = p_input->p_demux_data;
1209     avi_packet_t avi_pk;
1210
1211     /* find first chunk of i_stream that isn't in index */
1212
1213     if( p_avi->i_movi_lastchunk_pos >= p_avi->i_movi_begin )
1214     {
1215         AVI_SeekAbsolute( p_input, p_avi->i_movi_lastchunk_pos );
1216         if( AVI_PacketNext( p_input ) )
1217         {
1218             return VLC_EGENERIC;
1219         }
1220     }
1221     else
1222     {
1223         AVI_SeekAbsolute( p_input, p_avi->i_movi_begin );
1224     }
1225
1226     for( ;; )
1227     {
1228
1229         if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1230         {
1231             msg_Err( p_input, "cannot get packet header" );
1232             return VLC_EGENERIC;
1233         }
1234         if( avi_pk.i_stream >= p_avi->i_streams ||
1235             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1236         {
1237             switch( avi_pk.i_fourcc )
1238             {
1239                 case AVIFOURCC_LIST:
1240                     AVI_SkipBytes( p_input, 12 );
1241                     break;
1242                 default:
1243                     if( AVI_PacketNext( p_input ) )
1244                     {
1245                         return VLC_EGENERIC;
1246                     }
1247                     break;
1248             }
1249         }
1250         else
1251         {
1252             /* add this chunk to the index */
1253             AVIIndexEntry_t index;
1254
1255             index.i_id = avi_pk.i_fourcc;
1256             index.i_flags =
1257                AVI_GetKeyFlag(p_avi->pp_info[avi_pk.i_stream]->i_codec,
1258                               avi_pk.i_peek);
1259             index.i_pos = avi_pk.i_pos;
1260             index.i_length = avi_pk.i_size;
1261             AVI_IndexAddEntry( p_avi, avi_pk.i_stream, &index );
1262
1263             if( avi_pk.i_stream == i_stream  )
1264             {
1265                 return VLC_SUCCESS;
1266             }
1267
1268             if( AVI_PacketNext( p_input ) )
1269             {
1270                 return VLC_EGENERIC;
1271             }
1272         }
1273     }
1274 }
1275
1276
1277 /* be sure that i_ck will be a valid index entry */
1278 static int AVI_SetStreamChunk( input_thread_t    *p_input,
1279                                int i_stream,
1280                                int i_ck )
1281 {
1282     demux_sys_t *p_avi = p_input->p_demux_data;
1283     avi_stream_t *p_stream = p_avi->pp_info[i_stream];
1284
1285     p_stream->i_idxposc = i_ck;
1286     p_stream->i_idxposb = 0;
1287
1288     if(  i_ck >= p_stream->i_idxnb )
1289     {
1290         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1291         do
1292         {
1293             p_stream->i_idxposc++;
1294             if( AVI_StreamChunkFind( p_input, i_stream ) )
1295             {
1296                 return VLC_EGENERIC;
1297             }
1298
1299         } while( p_stream->i_idxposc < i_ck );
1300     }
1301
1302     return VLC_SUCCESS;
1303 }
1304
1305
1306 /* XXX FIXME up to now, we assume that all chunk are one after one */
1307 static int AVI_SetStreamBytes( input_thread_t    *p_input,
1308                                int i_stream,
1309                                off_t   i_byte )
1310 {
1311     demux_sys_t *p_avi = p_input->p_demux_data;
1312     avi_stream_t *p_stream = p_avi->pp_info[i_stream];
1313
1314     if( ( p_stream->i_idxnb > 0 )
1315         &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1316                 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1317     {
1318         /* index is valid to find the ck */
1319         /* uses dichototmie to be fast enougth */
1320         int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1321         int i_idxmax  = p_stream->i_idxnb;
1322         int i_idxmin  = 0;
1323         for( ;; )
1324         {
1325             if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1326             {
1327                 i_idxmax  = i_idxposc ;
1328                 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1329             }
1330             else
1331             {
1332                 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1333                         p_stream->p_index[i_idxposc].i_length <= i_byte)
1334                 {
1335                     i_idxmin  = i_idxposc ;
1336                     i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1337                 }
1338                 else
1339                 {
1340                     p_stream->i_idxposc = i_idxposc;
1341                     p_stream->i_idxposb = i_byte -
1342                             p_stream->p_index[i_idxposc].i_lengthtotal;
1343                     return VLC_SUCCESS;
1344                 }
1345             }
1346         }
1347
1348     }
1349     else
1350     {
1351         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1352         p_stream->i_idxposb = 0;
1353         do
1354         {
1355             p_stream->i_idxposc++;
1356             if( AVI_StreamChunkFind( p_input, i_stream ) )
1357             {
1358                 return VLC_EGENERIC;
1359             }
1360
1361         } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1362                     p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1363
1364         p_stream->i_idxposb = i_byte -
1365                        p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1366         return VLC_SUCCESS;
1367     }
1368 }
1369
1370 static int AVI_StreamSeek( input_thread_t *p_input,
1371                            demux_sys_t  *p_avi,
1372                            int i_stream,
1373                            mtime_t i_date )
1374 {
1375 #define p_stream    p_avi->pp_info[i_stream]
1376     mtime_t i_oldpts;
1377
1378     i_oldpts = AVI_GetPTS( p_stream );
1379
1380     if( !p_stream->i_samplesize )
1381     {
1382         if( AVI_SetStreamChunk( p_input,
1383                                 i_stream,
1384                                 AVI_PTSToChunk( p_stream, i_date ) ) )
1385         {
1386             return VLC_EGENERIC;
1387         }
1388
1389         /* search key frame */
1390         msg_Dbg( p_input,
1391                  "old:"I64Fd" %s new "I64Fd,
1392                  i_oldpts,
1393                  i_oldpts > i_date ? ">" : "<",
1394                  i_date );
1395
1396         if( i_date < i_oldpts )
1397         {
1398             while( p_stream->i_idxposc > 0 &&
1399                !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1400                                                             AVIIF_KEYFRAME ) )
1401             {
1402                 if( AVI_SetStreamChunk( p_input,
1403                                         i_stream,
1404                                         p_stream->i_idxposc - 1 ) )
1405                 {
1406                     return VLC_EGENERIC;
1407                 }
1408             }
1409         }
1410         else
1411         {
1412             while( p_stream->i_idxposc < p_stream->i_idxnb &&
1413                     !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1414                                                             AVIIF_KEYFRAME ) )
1415             {
1416                 if( AVI_SetStreamChunk( p_input,
1417                                         i_stream,
1418                                         p_stream->i_idxposc + 1 ) )
1419                 {
1420                     return VLC_EGENERIC;
1421                 }
1422             }
1423         }
1424     }
1425     else
1426     {
1427         if( AVI_SetStreamBytes( p_input,
1428                                 i_stream,
1429                                 AVI_PTSToByte( p_stream, i_date ) ) )
1430         {
1431             return VLC_EGENERIC;
1432         }
1433     }
1434     return VLC_SUCCESS;
1435 #undef p_stream
1436 }
1437
1438 /*****************************************************************************
1439  * AVISeek: goto to i_date or i_percent
1440  *****************************************************************************
1441  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1442  *****************************************************************************/
1443 static int    AVISeek   ( input_thread_t *p_input,
1444                           mtime_t i_date, int i_percent )
1445 {
1446
1447     demux_sys_t *p_avi = p_input->p_demux_data;
1448     int         i_stream;
1449     msg_Dbg( p_input,
1450              "seek requested: "I64Fd" secondes %d%%",
1451              i_date / 1000000,
1452              i_percent );
1453
1454     if( p_avi->b_seekable )
1455     {
1456         if( !p_avi->i_length )
1457         {
1458             avi_stream_t *p_stream;
1459             uint64_t i_pos;
1460
1461             /* use i_percent to create a true i_date */
1462             msg_Warn( p_input,
1463                       "mmh, seeking without index at %d%%"
1464                       " work only for interleaved file", i_percent );
1465
1466             if( i_percent >= 100 )
1467             {
1468                 msg_Err( p_input, "cannot seek so far !" );
1469                 return( -1 );
1470             }
1471             i_percent = __MAX( i_percent, 0 );
1472
1473             /* try to find chunk that is at i_percent or the file */
1474             i_pos = __MAX( i_percent *
1475                            p_input->stream.p_selected_area->i_size / 100,
1476                            p_avi->i_movi_begin );
1477             /* search first selected stream */
1478             for( i_stream = 0, p_stream = NULL;
1479                         i_stream < p_avi->i_streams; i_stream++ )
1480             {
1481                 p_stream = p_avi->pp_info[i_stream];
1482                 if( p_stream->b_activated )
1483                 {
1484                     break;
1485                 }
1486             }
1487             if( !p_stream || !p_stream->b_activated )
1488             {
1489                 msg_Err( p_input, "cannot find any selected stream" );
1490                 return( -1 );
1491             }
1492
1493             /* be sure that the index exit */
1494             if( AVI_SetStreamChunk( p_input,
1495                                     i_stream,
1496                                     0 ) )
1497             {
1498                 msg_Err( p_input, "cannot seek" );
1499                 return( -1 );
1500             }
1501
1502             while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1503                p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1504             {
1505                 /* search after i_idxposc */
1506                 if( AVI_SetStreamChunk( p_input,
1507                                         i_stream, p_stream->i_idxposc + 1 ) )
1508                 {
1509                     msg_Err( p_input, "cannot seek" );
1510                     return( -1 );
1511                 }
1512             }
1513             i_date = AVI_GetPTS( p_stream );
1514             /* TODO better support for i_samplesize != 0 */
1515             msg_Dbg( p_input, "estimate date "I64Fd, i_date );
1516         }
1517
1518 #define p_stream    p_avi->pp_info[i_stream]
1519         p_avi->i_time = 0;
1520         /* seek for chunk based streams */
1521         for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1522         {
1523             if( p_stream->b_activated && !p_stream->i_samplesize )
1524 //            if( p_stream->b_activated )
1525             {
1526                 AVI_StreamSeek( p_input, p_avi, i_stream, i_date );
1527                 p_avi->i_time = __MAX( AVI_GetPTS( p_stream ),
1528                                         p_avi->i_time );
1529             }
1530         }
1531 #if 1
1532         if( p_avi->i_time )
1533         {
1534             i_date = p_avi->i_time;
1535         }
1536         /* seek for bytes based streams */
1537         for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1538         {
1539             if( p_stream->b_activated && p_stream->i_samplesize )
1540             {
1541                 AVI_StreamSeek( p_input, p_avi, i_stream, i_date );
1542 //                p_avi->i_time = __MAX( AVI_GetPTS( p_stream ), p_avi->i_time );
1543             }
1544         }
1545         msg_Dbg( p_input, "seek: "I64Fd" secondes", p_avi->i_time /1000000 );
1546         /* set true movie time */
1547 #endif
1548         if( !p_avi->i_time )
1549         {
1550             p_avi->i_time = i_date;
1551         }
1552 #undef p_stream
1553         return( 1 );
1554     }
1555     else
1556     {
1557         msg_Err( p_input, "shouldn't yet be executed" );
1558         return( -1 );
1559     }
1560 }
1561
1562 /*****************************************************************************
1563  * AVIDemux_Seekable: reads and demuxes data packets for stream seekable
1564  *****************************************************************************
1565  * AVIDemux: reads and demuxes data packets
1566  *****************************************************************************
1567  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1568  *****************************************************************************/
1569 typedef struct avi_stream_toread_s
1570 {
1571     vlc_bool_t b_ok;
1572
1573     int i_toread;
1574
1575     off_t i_posf; // where we will read :
1576                   // if i_idxposb == 0 : begining of chunk (+8 to acces data)
1577                   // else : point on data directly
1578 } avi_stream_toread_t;
1579
1580 static int AVIDemux_Seekable( input_thread_t *p_input )
1581 {
1582     int i_stream;
1583     vlc_bool_t b_stream;
1584
1585     // cannot be more than 100 stream (dcXX or wbXX)
1586     avi_stream_toread_t toread[100];
1587
1588     demux_sys_t *p_avi = p_input->p_demux_data;
1589
1590     /* detect new selected/unselected streams */
1591     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1592     {
1593 #define p_stream    p_avi->pp_info[i_stream]
1594         if( p_stream->p_es )
1595         {
1596             if( p_stream->p_es->p_decoder_fifo &&
1597                 !p_stream->b_activated )
1598             {
1599                 AVI_StreamStart( p_input, p_avi, i_stream );
1600             }
1601             else
1602             if( !p_stream->p_es->p_decoder_fifo &&
1603                 p_stream->b_activated )
1604             {
1605                 AVI_StreamStop( p_input, p_avi, i_stream );
1606             }
1607         }
1608 #undef  p_stream
1609     }
1610
1611     if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
1612     {
1613         mtime_t i_date;
1614         int i_percent;
1615         /* first wait for empty buffer, arbitrary time FIXME */
1616 //        msleep( DEFAULT_PTS_DELAY );
1617
1618         i_date = (mtime_t)1000000 *
1619                  (mtime_t)p_avi->i_length *
1620                  (mtime_t)AVI_TellAbsolute( p_input ) /
1621                  (mtime_t)p_input->stream.p_selected_area->i_size;
1622         i_percent = 100 * AVI_TellAbsolute( p_input ) /
1623                         p_input->stream.p_selected_area->i_size;
1624
1625 //        input_ClockInit( p_input->stream.p_selected_program );
1626         AVISeek( p_input, i_date, i_percent);
1627
1628 #ifdef __AVI_SUBTITLE__
1629         if( p_avi->p_sub )
1630         {
1631             subtitle_Seek( p_avi->p_sub, p_avi->i_time );
1632         }
1633 #endif
1634     }
1635
1636
1637     /* wait for the good time */
1638
1639     p_avi->i_pcr = p_avi->i_time * 9 / 100;
1640
1641     input_ClockManageRef( p_input,
1642                           p_input->stream.p_selected_program,
1643                           p_avi->i_pcr );
1644
1645
1646     p_avi->i_time += 100*1000;  /* read 100ms */
1647
1648 #ifdef __AVI_SUBTITLE__
1649     if( p_avi->p_sub )
1650     {
1651         subtitle_Demux( p_avi->p_sub, p_avi->i_time );
1652     }
1653 #endif
1654     /* init toread */
1655     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1656     {
1657 #define p_stream    p_avi->pp_info[i_stream]
1658         mtime_t i_dpts;
1659
1660         toread[i_stream].b_ok = p_stream->b_activated;
1661
1662         if( p_stream->i_idxposc < p_stream->i_idxnb )
1663         {
1664             toread[i_stream].i_posf =
1665                 p_stream->p_index[p_stream->i_idxposc].i_pos;
1666            if( p_stream->i_idxposb > 0 )
1667            {
1668                 toread[i_stream].i_posf += 8 + p_stream->i_idxposb;
1669            }
1670         }
1671         else
1672         {
1673             toread[i_stream].i_posf = -1;
1674         }
1675
1676         i_dpts = p_avi->i_time - AVI_GetPTS( p_stream  );
1677
1678         if( p_stream->i_samplesize )
1679         {
1680             toread[i_stream].i_toread = AVI_PTSToByte( p_stream,
1681                                                        __ABS( i_dpts ) );
1682         }
1683         else
1684         {
1685             toread[i_stream].i_toread = AVI_PTSToChunk( p_stream,
1686                                                         __ABS( i_dpts ) );
1687         }
1688
1689         if( i_dpts < 0 )
1690         {
1691             toread[i_stream].i_toread *= -1;
1692         }
1693 #undef  p_stream
1694     }
1695
1696     b_stream = VLC_FALSE;
1697
1698     for( ;; )
1699     {
1700 #define p_stream    p_avi->pp_info[i_stream]
1701         vlc_bool_t       b_done;
1702         pes_packet_t    *p_pes;
1703         off_t i_pos;
1704         int i;
1705         int i_size;
1706
1707         /* search for first chunk to be read */
1708         for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_avi->i_streams; i++ )
1709         {
1710             if( !toread[i].b_ok ||
1711                 AVI_GetDPTS( p_avi->pp_info[i],
1712                              toread[i].i_toread ) <= -25 * 1000 )
1713             {
1714                 continue;
1715             }
1716
1717             if( toread[i].i_toread > 0 )
1718             {
1719                 b_done = VLC_FALSE; // not yet finished
1720             }
1721
1722             if( toread[i].i_posf > 0 )
1723             {
1724                 if( i_pos == -1 || i_pos > toread[i_stream].i_posf )
1725                 {
1726                     i_stream = i;
1727                     i_pos = toread[i].i_posf;
1728                 }
1729             }
1730         }
1731
1732         if( b_done )
1733         {
1734 //            return( b_stream ? 1 : 0 );
1735             return( 1 );
1736         }
1737
1738         if( i_pos == -1 )
1739         {
1740             /* no valid index, we will parse directly the stream */
1741             if( p_avi->i_movi_lastchunk_pos >= p_avi->i_movi_begin )
1742             {
1743                 AVI_SeekAbsolute( p_input, p_avi->i_movi_lastchunk_pos );
1744                 if( AVI_PacketNext( p_input ) )
1745                 {
1746                     return( 0 );
1747                 }
1748             }
1749             else
1750             {
1751                 AVI_SeekAbsolute( p_input, p_avi->i_movi_begin );
1752             }
1753
1754             for( ;; )
1755             {
1756                 avi_packet_t avi_pk;
1757
1758                 if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1759                 {
1760                     msg_Err( p_input, "cannot get packet header" );
1761                     return( 0 );
1762                 }
1763                 if( avi_pk.i_stream >= p_avi->i_streams ||
1764                     ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1765                 {
1766                     switch( avi_pk.i_fourcc )
1767                     {
1768                         case AVIFOURCC_LIST:
1769                             AVI_SkipBytes( p_input, 12 );
1770                             break;
1771                         default:
1772                             if( AVI_PacketNext( p_input ) )
1773                             {
1774                                 msg_Err( p_input, "cannot skip packet" );
1775                                 return( 0 );
1776                             }
1777                             break;
1778                     }
1779                     continue;
1780                 }
1781                 else
1782                 {
1783                     /* add this chunk to the index */
1784                     AVIIndexEntry_t index;
1785
1786                     index.i_id = avi_pk.i_fourcc;
1787                     index.i_flags =
1788                        AVI_GetKeyFlag(p_avi->pp_info[avi_pk.i_stream]->i_codec,
1789                                       avi_pk.i_peek);
1790                     index.i_pos = avi_pk.i_pos;
1791                     index.i_length = avi_pk.i_size;
1792                     AVI_IndexAddEntry( p_avi, avi_pk.i_stream, &index );
1793
1794                     i_stream = avi_pk.i_stream;
1795                     /* do we will read this data ? */
1796                     if( AVI_GetDPTS( p_stream,
1797                              toread[i_stream].i_toread ) > -25 * 1000 )
1798                     {
1799                         break;
1800                     }
1801                     else
1802                     {
1803                         if( AVI_PacketNext( p_input ) )
1804                         {
1805                             msg_Err( p_input, "cannot skip packet" );
1806                             return( 0 );
1807                         }
1808                     }
1809                 }
1810             }
1811
1812         }
1813         else
1814         {
1815             AVI_SeekAbsolute( p_input, i_pos );
1816         }
1817
1818         /* read thoses data */
1819         if( p_stream->i_samplesize )
1820         {
1821             i_size = __MIN( p_stream->p_index[p_stream->i_idxposc].i_length -
1822                                 p_stream->i_idxposb,
1823                                 100 * 1024 ); // 10Ko max
1824 //                            toread[i_stream].i_toread );
1825         }
1826         else
1827         {
1828             i_size = p_stream->p_index[p_stream->i_idxposc].i_length;
1829         }
1830
1831         if( p_stream->i_idxposb == 0 )
1832         {
1833             i_size += 8; // need to read and skip header
1834         }
1835
1836         if( input_ReadInPES( p_input, &p_pes, __EVEN( i_size ) ) < 0 )
1837         {
1838             msg_Err( p_input, "failled reading data" );
1839             toread[i_stream].b_ok = VLC_FALSE;
1840             continue;
1841         }
1842
1843         if( i_size % 2 )    // read was padded on word boundary
1844         {
1845             p_pes->p_last->p_payload_end--;
1846             p_pes->i_pes_size--;
1847         }
1848         // skip header
1849         if( p_stream->i_idxposb == 0 )
1850         {
1851             p_pes->p_first->p_payload_start += 8;
1852             p_pes->i_pes_size -= 8;
1853         }
1854
1855         p_pes->i_pts = AVI_GetPTS( p_stream );
1856
1857         /* read data */
1858         if( p_stream->i_samplesize )
1859         {
1860             if( p_stream->i_idxposb == 0 )
1861             {
1862                 i_size -= 8;
1863             }
1864             toread[i_stream].i_toread -= i_size;
1865             p_stream->i_idxposb += i_size;
1866             if( p_stream->i_idxposb >=
1867                     p_stream->p_index[p_stream->i_idxposc].i_length )
1868             {
1869                 p_stream->i_idxposb = 0;
1870                 p_stream->i_idxposc++;
1871             }
1872         }
1873         else
1874         {
1875             toread[i_stream].i_toread--;
1876             p_stream->i_idxposc++;
1877         }
1878
1879         if( p_stream->i_idxposc < p_stream->i_idxnb)
1880         {
1881             toread[i_stream].i_posf =
1882                 p_stream->p_index[p_stream->i_idxposc].i_pos;
1883             if( p_stream->i_idxposb > 0 )
1884             {
1885                 toread[i_stream].i_posf += 8 + p_stream->i_idxposb;
1886             }
1887
1888         }
1889         else
1890         {
1891             toread[i_stream].i_posf = -1;
1892         }
1893
1894         b_stream = VLC_TRUE; // at least one read succeed
1895
1896         if( p_stream->p_es && p_stream->p_es->p_decoder_fifo )
1897         {
1898             p_pes->i_dts =
1899                 p_pes->i_pts =
1900                     input_ClockGetTS( p_input,
1901                                       p_input->stream.p_selected_program,
1902                                       p_pes->i_pts * 9/100);
1903
1904             input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
1905         }
1906         else
1907         {
1908             input_DeletePES( p_input->p_method_data, p_pes );
1909         }
1910     }
1911 }
1912
1913
1914 /*****************************************************************************
1915  * AVIDemux_UnSeekable: reads and demuxes data packets for unseekable file
1916  *****************************************************************************
1917  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1918  *****************************************************************************/
1919 static int AVIDemux_UnSeekable( input_thread_t *p_input )
1920 {
1921     demux_sys_t     *p_avi = p_input->p_demux_data;
1922     avi_stream_t *p_stream_master;
1923     vlc_bool_t b_audio;
1924     int     i_stream;
1925     int     i_packet;
1926
1927     /* *** send audio data to decoder only if rate == DEFAULT_RATE *** */
1928     vlc_mutex_lock( &p_input->stream.stream_lock );
1929     b_audio = p_input->stream.control.i_rate == DEFAULT_RATE;
1930     vlc_mutex_unlock( &p_input->stream.stream_lock );
1931
1932     input_ClockManageRef( p_input,
1933                           p_input->stream.p_selected_program,
1934                           p_avi->i_pcr );
1935     /* *** find master stream for data packet skipping algo *** */
1936     /* *** -> first video, if any, or first audio ES *** */
1937     for( i_stream = 0, p_stream_master = NULL;
1938             i_stream < p_avi->i_streams; i_stream++ )
1939     {
1940 #define p_stream    p_avi->pp_info[i_stream]
1941         if( p_stream->p_es &&
1942             p_stream->p_es->p_decoder_fifo )
1943         {
1944             if( p_stream->i_cat == VIDEO_ES )
1945             {
1946                 p_stream_master = p_stream;
1947                 break;
1948             }
1949             if( p_stream->i_cat == AUDIO_ES && !p_stream_master )
1950             {
1951                 p_stream_master = p_stream;
1952             }
1953         }
1954 #undef p_stream
1955     }
1956     if( !p_stream_master )
1957     {
1958         msg_Err( p_input, "no more stream selected" );
1959         return( 0 );
1960     }
1961
1962     p_avi->i_pcr = AVI_GetPTS( p_stream_master ) * 9 / 100;
1963
1964     for( i_packet = 0; i_packet < 10; i_packet++)
1965     {
1966 #define p_stream    p_avi->pp_info[avi_pk.i_stream]
1967
1968         avi_packet_t    avi_pk;
1969
1970         if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1971         {
1972             return( 0 );
1973         }
1974 //        AVI_ParseStreamHeader( avi_pk.i_fourcc, &i_stream, &i_cat );
1975
1976         if( avi_pk.i_stream >= p_avi->i_streams ||
1977             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1978         {
1979             /* we haven't found an audio or video packet:
1980              *  - we have seek, found first next packet
1981              *  - others packets could be found, skip them
1982              */
1983             switch( avi_pk.i_fourcc )
1984             {
1985                 case AVIFOURCC_JUNK:
1986                 case AVIFOURCC_LIST:
1987                     return( !AVI_PacketNext( p_input ) ? 1 : 0 );
1988                 case AVIFOURCC_idx1:
1989                     return( 0 );    // eof
1990                 default:
1991                     msg_Warn( p_input,
1992                               "seems to have lost position, resync" );
1993                     if( AVI_PacketSearch( p_input ) )
1994                     {
1995                         msg_Err( p_input, "resync failed" );
1996                         return( -1 );
1997                     }
1998             }
1999         }
2000         else
2001         {
2002             /* do will send this packet to decoder ? */
2003             if( ( !b_audio && avi_pk.i_cat == AUDIO_ES )||
2004                 !p_stream->p_es ||
2005                 !p_stream->p_es->p_decoder_fifo )
2006             {
2007                 if( AVI_PacketNext( p_input ) )
2008                 {
2009                     return( 0 );
2010                 }
2011             }
2012             else
2013             {
2014                 /* it's a selected stream, check for time */
2015                 if( __ABS( AVI_GetPTS( p_stream ) -
2016                             AVI_GetPTS( p_stream_master ) )< 600*1000 )
2017                 {
2018                     /* load it and send to decoder */
2019                     pes_packet_t    *p_pes;
2020                     if( AVI_PacketRead( p_input, &avi_pk, &p_pes ) || !p_pes)
2021                     {
2022                         return( -1 );
2023                     }
2024                     p_pes->i_pts =
2025                         input_ClockGetTS( p_input,
2026                                           p_input->stream.p_selected_program,
2027                                           AVI_GetPTS( p_stream ) * 9/100);
2028                     input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
2029                 }
2030                 else
2031                 {
2032                     if( AVI_PacketNext( p_input ) )
2033                     {
2034                         return( 0 );
2035                     }
2036                 }
2037             }
2038
2039             /* *** update stream time position *** */
2040             if( p_stream->i_samplesize )
2041             {
2042                 p_stream->i_idxposb += avi_pk.i_size;
2043             }
2044             else
2045             {
2046                 p_stream->i_idxposc++;
2047             }
2048
2049         }
2050
2051 #undef p_stream
2052     }
2053
2054     return( 1 );
2055 }
2056