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 1.36 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 "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 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 vlc_module_begin();
  60     add_category_hint( N_("avi-demuxer"), NULL, VLC_TRUE );
  61         add_bool( "avi-interleaved", 0, NULL,
  62                   _("force interleaved method"),
  63                   _("force interleaved method"), VLC_TRUE );
  64         add_bool( "avi-index", 0, NULL,
  65                   _("force index creation"),
  66                   _("force index creation"), VLC_TRUE );
  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                             size_t 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, 2048 ) );
 143         if( i_read <= 0 )
 144         {
 145             /* should occur only with EOF and max allocation reached
 146              * it safer to  return an error */
 147             /* free pes */
 148             input_DeletePES( p_input->p_method_data, p_pes );
 149             return -1;
 150         }
 151
 152         if( !p_pes->p_first )
 153         {
 154             p_pes->p_first = p_data;
 155         }
 156         else
 157         {
 158             p_pes->p_last->p_next = p_data;
 159         }
 160         p_pes->p_last = p_data;
 161         p_pes->i_nb_data++;
 162         p_pes->i_pes_size += i_read;
 163     }
 164
 165
 166     return p_pes->i_pes_size;
 167 }
 168
 169 /* Test if it seems that it's a key frame */
 170 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
 171 {
 172     switch( i_fourcc )
 173     {
 174         case FOURCC_DIV1:
 175             /* we have:
 176              *  startcode:      0x00000100   32bits
 177              *  framenumber     ?             5bits
 178              *  piture type     0(I),1(P)     2bits
 179              */
 180             if( GetDWBE( p_byte ) != 0x00000100 )
 181             {
 182                 /* it's not an msmpegv1 stream, strange...*/
 183                 return AVIIF_KEYFRAME;
 184             }
 185             else
 186             {
 187                 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
 188             }
 189         case FOURCC_DIV2:
 190         case FOURCC_DIV3:   // wmv1 also
 191             /* we have
 192              *  picture type    0(I),1(P)     2bits
 193              */
 194             return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
 195         case FOURCC_mp4v:
 196             /* we should find first occurence of 0x000001b6 (32bits)
 197              *  startcode:      0x000001b6   32bits
 198              *  piture type     0(I),1(P)     2bits
 199              */
 200             if( GetDWBE( p_byte ) != 0x000001b6 )
 201             {
 202                 /* not true , need to find the first VOP header */
 203                 return AVIIF_KEYFRAME;
 204             }
 205             else
 206             {
 207                 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
 208             }
 209         default:
 210             /* I can't do it, so say yes */
 211             return AVIIF_KEYFRAME;
 212     }
 213 }
 214
 215 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
 216 {
 217     switch( i_cat )
 218     {
 219         case AUDIO_ES:
 220             switch( i_codec )
 221             {
 222                 case WAVE_FORMAT_PCM:
 223                     return VLC_FOURCC( 'a', 'r', 'a', 'w' );
 224                 case WAVE_FORMAT_MPEG:
 225                 case WAVE_FORMAT_MPEGLAYER3:
 226                     return VLC_FOURCC( 'm', 'p', 'g', 'a' );
 227                 case WAVE_FORMAT_A52:
 228                     return VLC_FOURCC( 'a', '5', '2', ' ' );
 229                 case WAVE_FORMAT_WMA1:
 230                     return VLC_FOURCC( 'w', 'm', 'a', '1' );
 231                 case WAVE_FORMAT_WMA2:
 232                     return VLC_FOURCC( 'w', 'm', 'a', '2' );
 233                 default:
 234                     return VLC_FOURCC( 'm', 's',
 235                                        ( i_codec >> 8 )&0xff, i_codec&0xff );
 236             }
 237         case VIDEO_ES:
 238             // XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4
 239             switch( i_codec )
 240             {
 241                 case FOURCC_DIV1:
 242                 case FOURCC_div1:
 243                 case FOURCC_MPG4:
 244                 case FOURCC_mpg4:
 245                     return FOURCC_DIV1;
 246                 case FOURCC_DIV2:
 247                 case FOURCC_div2:
 248                 case FOURCC_MP42:
 249                 case FOURCC_mp42:
 250                 case FOURCC_MPG3:
 251                 case FOURCC_mpg3:
 252                     return FOURCC_DIV2;
 253                 case FOURCC_div3:
 254                 case FOURCC_MP43:
 255                 case FOURCC_mp43:
 256                 case FOURCC_DIV3:
 257                 case FOURCC_DIV4:
 258                 case FOURCC_div4:
 259                 case FOURCC_DIV5:
 260                 case FOURCC_div5:
 261                 case FOURCC_DIV6:
 262                 case FOURCC_div6:
 263                 case FOURCC_AP41:
 264                 case FOURCC_3IV1:
 265                     return FOURCC_DIV3;
 266                 case FOURCC_DIVX:
 267                 case FOURCC_divx:
 268                 case FOURCC_MP4S:
 269                 case FOURCC_mp4s:
 270                 case FOURCC_M4S2:
 271                 case FOURCC_m4s2:
 272                 case FOURCC_xvid:
 273                 case FOURCC_XVID:
 274                 case FOURCC_XviD:
 275                 case FOURCC_DX50:
 276                 case FOURCC_mp4v:
 277                 case FOURCC_4:
 278                     return FOURCC_mp4v;
 279             }
 280         default:
 281             return VLC_FOURCC( 'u', 'n', 'd', 'f' );
 282     }
 283 }
 284
 285 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
 286                                    int *pi_number, int *pi_type )
 287 {
 288 #define SET_PTR( p, v ) if( p ) *(p) = (v);
 289     int c1, c2;
 290
 291     c1 = ((uint8_t *)&i_id)[0];
 292     c2 = ((uint8_t *)&i_id)[1];
 293
 294     if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
 295     {
 296         SET_PTR( pi_number, 100 ); /* > max stream number */
 297         SET_PTR( pi_type, UNKNOWN_ES );
 298     }
 299     else
 300     {
 301         SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
 302         switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
 303         {
 304             case AVITWOCC_wb:
 305                 SET_PTR( pi_type, AUDIO_ES );
 306                 break;
 307             case AVITWOCC_dc:
 308             case AVITWOCC_db:
 309                 SET_PTR( pi_type, VIDEO_ES );
 310                 break;
 311             default:
 312                 SET_PTR( pi_type, UNKNOWN_ES );
 313                 break;
 314         }
 315     }
 316 #undef SET_PTR
 317 }
 318
 319 static int AVI_PacketGetHeader( input_thread_t *p_input, avi_packet_t *p_pk )
 320 {
 321     uint8_t  *p_peek;
 322
 323     if( input_Peek( p_input, &p_peek, 16 ) < 16 )
 324     {
 325         return VLC_EGENERIC;
 326     }
 327     p_pk->i_fourcc  = GetFOURCC( p_peek );
 328     p_pk->i_size    = GetDWLE( p_peek + 4 );
 329     p_pk->i_pos     = AVI_TellAbsolute( p_input );
 330     if( p_pk->i_fourcc == AVIFOURCC_LIST )
 331     {
 332         p_pk->i_type = GetFOURCC( p_peek + 8 );
 333     }
 334     else
 335     {
 336         p_pk->i_type = 0;
 337     }
 338
 339     memcpy( p_pk->i_peek, p_peek + 8, 8 );
 340
 341     AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
 342     return VLC_SUCCESS;
 343 }
 344
 345 static int AVI_PacketNext( input_thread_t *p_input )
 346 {
 347     avi_packet_t    avi_ck;
 348
 349     if( AVI_PacketGetHeader( p_input, &avi_ck ) )
 350     {
 351         return VLC_EGENERIC;
 352     }
 353     if( avi_ck.i_fourcc == AVIFOURCC_LIST && avi_ck.i_type == AVIFOURCC_rec )
 354     {
 355         return AVI_SkipBytes( p_input, 12 );
 356     }
 357     else
 358     {
 359         return AVI_SkipBytes( p_input, __EVEN( avi_ck.i_size ) + 8 );
 360     }
 361 }
 362 static int AVI_PacketRead( input_thread_t   *p_input,
 363                            avi_packet_t     *p_pk,
 364                            pes_packet_t     **pp_pes )
 365 {
 366     size_t i_size;
 367     vlc_bool_t b_pad;
 368
 369     i_size = __EVEN( p_pk->i_size + 8 );
 370     b_pad  = ( i_size != p_pk->i_size + 8 );
 371
 372     if( input_ReadInPES( p_input, pp_pes, i_size ) != (ssize_t)i_size )
 373     {
 374         return VLC_EGENERIC;
 375     }
 376     (*pp_pes)->p_first->p_payload_start += 8;
 377     (*pp_pes)->i_pes_size -= 8;
 378
 379     if( b_pad )
 380     {
 381         (*pp_pes)->p_last->p_payload_end--;
 382         (*pp_pes)->i_pes_size--;
 383     }
 384
 385     return VLC_SUCCESS;
 386 }
 387
 388 static int AVI_PacketSearch( input_thread_t *p_input )
 389 {
 390     demux_sys_t     *p_avi = p_input->p_demux_data;
 391
 392     avi_packet_t    avi_pk;
 393     for( ;; )
 394     {
 395         if( AVI_SkipBytes( p_input, 1 ) )
 396         {
 397             return VLC_EGENERIC;
 398         }
 399         AVI_PacketGetHeader( p_input, &avi_pk );
 400         if( avi_pk.i_stream < p_avi->i_streams &&
 401             ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
 402         {
 403             return VLC_SUCCESS;
 404         }
 405         switch( avi_pk.i_fourcc )
 406         {
 407             case AVIFOURCC_JUNK:
 408             case AVIFOURCC_LIST:
 409             case AVIFOURCC_idx1:
 410                 return VLC_SUCCESS;
 411         }
 412     }
 413 }
 414
 415
 416 static void __AVI_AddEntryIndex( avi_stream_t *p_info,
 417                                  AVIIndexEntry_t *p_index)
 418 {
 419     if( p_info->p_index == NULL )
 420     {
 421         p_info->i_idxmax = 16384;
 422         p_info->i_idxnb = 0;
 423         if( !( p_info->p_index = calloc( p_info->i_idxmax,
 424                                   sizeof( AVIIndexEntry_t ) ) ) )
 425         {
 426             return;
 427         }
 428     }
 429     if( p_info->i_idxnb >= p_info->i_idxmax )
 430     {
 431         p_info->i_idxmax += 16384;
 432         if( !( p_info->p_index = realloc( (void*)p_info->p_index,
 433                            p_info->i_idxmax *
 434                            sizeof( AVIIndexEntry_t ) ) ) )
 435         {
 436             return;
 437         }
 438     }
 439     /* calculate cumulate length */
 440     if( p_info->i_idxnb > 0 )
 441     {
 442         p_index->i_lengthtotal =
 443             p_info->p_index[p_info->i_idxnb - 1].i_length +
 444                 p_info->p_index[p_info->i_idxnb - 1].i_lengthtotal;
 445     }
 446     else
 447     {
 448         p_index->i_lengthtotal = 0;
 449     }
 450
 451     p_info->p_index[p_info->i_idxnb] = *p_index;
 452     p_info->i_idxnb++;
 453
 454 }
 455
 456 static void AVI_IndexAddEntry( demux_sys_t *p_avi,
 457                                int i_stream,
 458                                AVIIndexEntry_t *p_index)
 459 {
 460     __AVI_AddEntryIndex( p_avi->pp_info[i_stream],
 461                          p_index );
 462     if( p_avi->i_movi_lastchunk_pos < p_index->i_pos )
 463     {
 464         p_avi->i_movi_lastchunk_pos = p_index->i_pos;
 465     }
 466 }
 467
 468 static void AVI_IndexLoad( input_thread_t *p_input )
 469 {
 470     demux_sys_t *p_avi = p_input->p_demux_data;
 471
 472     avi_chunk_list_t    *p_riff;
 473     avi_chunk_list_t    *p_movi;
 474     avi_chunk_idx1_t    *p_idx1;
 475
 476     unsigned int i_stream;
 477     unsigned int i_index;
 478     off_t   i_offset;
 479
 480     p_riff = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 481                                                AVIFOURCC_RIFF, 0);
 482
 483     p_idx1 = (avi_chunk_idx1_t*)AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
 484     p_movi = (avi_chunk_list_t*)AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
 485
 486     if( !p_idx1 )
 487     {
 488         msg_Warn( p_input, "cannot find idx1 chunk, no index defined" );
 489         return;
 490     }
 491     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 492     {
 493         p_avi->pp_info[i_stream]->i_idxnb  = 0;
 494         p_avi->pp_info[i_stream]->i_idxmax = 0;
 495         p_avi->pp_info[i_stream]->p_index  = NULL;
 496     }
 497     /* *** calculate offset *** */
 498     if( p_idx1->i_entry_count > 0 &&
 499         p_idx1->entry[0].i_pos < p_movi->i_chunk_pos )
 500     {
 501         i_offset = p_movi->i_chunk_pos + 8;
 502     }
 503     else
 504     {
 505         i_offset = 0;
 506     }
 507
 508     for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
 509     {
 510         unsigned int i_cat;
 511
 512         AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
 513                                &i_stream,
 514                                &i_cat );
 515         if( i_stream < p_avi->i_streams &&
 516             i_cat == p_avi->pp_info[i_stream]->i_cat )
 517         {
 518             AVIIndexEntry_t index;
 519             index.i_id      = p_idx1->entry[i_index].i_fourcc;
 520             index.i_flags   =
 521                 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
 522             index.i_pos     = p_idx1->entry[i_index].i_pos + i_offset;
 523             index.i_length  = p_idx1->entry[i_index].i_length;
 524             AVI_IndexAddEntry( p_avi, i_stream, &index );
 525         }
 526     }
 527     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 528     {
 529         msg_Dbg( p_input,
 530                 "stream[%d] creating %d index entries",
 531                 i_stream,
 532                 p_avi->pp_info[i_stream]->i_idxnb );
 533     }
 534
 535 }
 536
 537 static void AVI_IndexCreate( input_thread_t *p_input )
 538 {
 539     demux_sys_t *p_avi = p_input->p_demux_data;
 540
 541     avi_chunk_list_t    *p_riff;
 542     avi_chunk_list_t    *p_movi;
 543
 544     unsigned int i_stream;
 545     off_t i_movi_end;
 546
 547     p_riff = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 548                                                AVIFOURCC_RIFF, 0);
 549     p_movi = (avi_chunk_list_t*)AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
 550
 551     if( !p_movi )
 552     {
 553         msg_Err( p_input, "cannot find p_movi" );
 554         return;
 555     }
 556
 557     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 558     {
 559         p_avi->pp_info[i_stream]->i_idxnb  = 0;
 560         p_avi->pp_info[i_stream]->i_idxmax = 0;
 561         p_avi->pp_info[i_stream]->p_index  = NULL;
 562     }
 563     i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
 564                         p_input->stream.p_selected_area->i_size );
 565
 566     AVI_SeekAbsolute( p_input, p_movi->i_chunk_pos + 12);
 567     msg_Warn( p_input, "creating index from LIST-movi, will take time !" );
 568     for( ;; )
 569     {
 570         avi_packet_t pk;
 571
 572         if( AVI_PacketGetHeader( p_input, &pk ) )
 573         {
 574             break;
 575         }
 576         if( pk.i_stream < p_avi->i_streams &&
 577             pk.i_cat == p_avi->pp_info[pk.i_stream]->i_cat )
 578         {
 579             AVIIndexEntry_t index;
 580             index.i_id      = pk.i_fourcc;
 581             index.i_flags   =
 582                AVI_GetKeyFlag(p_avi->pp_info[pk.i_stream]->i_codec, pk.i_peek);
 583             index.i_pos     = pk.i_pos;
 584             index.i_length  = pk.i_size;
 585             AVI_IndexAddEntry( p_avi, pk.i_stream, &index );
 586         }
 587         else
 588         {
 589             switch( pk.i_fourcc )
 590             {
 591                 case AVIFOURCC_idx1:
 592                     goto print_stat;
 593                 case AVIFOURCC_rec:
 594                 case AVIFOURCC_JUNK:
 595                     break;
 596                 default:
 597                     msg_Warn( p_input, "need resync, probably broken avi" );
 598                     if( AVI_PacketSearch( p_input ) )
 599                     {
 600                         msg_Warn( p_input, "lost sync, abord index creation" );
 601                         goto print_stat;
 602                     }
 603             }
 604         }
 605         if( pk.i_pos + pk.i_size >= i_movi_end ||
 606             AVI_PacketNext( p_input ) )
 607         {
 608             break;
 609         }
 610     }
 611
 612 print_stat:
 613     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 614     {
 615         msg_Dbg( p_input,
 616                 "stream[%d] creating %d index entries",
 617                 i_stream,
 618                 p_avi->pp_info[i_stream]->i_idxnb );
 619     }
 620 }
 621
 622
 623 /*****************************************************************************
 624  * Stream management
 625  *****************************************************************************/
 626 static vlc_bool_t AVI_StreamStart ( input_thread_t *, demux_sys_t *, int );
 627 static int  AVI_StreamSeek   ( input_thread_t *, demux_sys_t *, int, mtime_t );
 628 static void AVI_StreamStop   ( input_thread_t *, demux_sys_t *, int );
 629 static int  AVI_StreamStopFinishedStreams( input_thread_t *, demux_sys_t * );
 630
 631 static vlc_bool_t AVI_StreamStart( input_thread_t *p_input,
 632                                    demux_sys_t *p_avi, int i_stream )
 633 {
 634 #define p_stream    p_avi->pp_info[i_stream]
 635     if( !p_stream->p_es )
 636     {
 637         msg_Warn( p_input, "stream[%d] unselectable", i_stream );
 638         return VLC_FALSE;
 639     }
 640     if( p_stream->b_activated )
 641     {
 642         msg_Warn( p_input, "stream[%d] already selected", i_stream );
 643         return VLC_TRUE;
 644     }
 645
 646     if( !p_stream->p_es->p_decoder_fifo )
 647     {
 648         vlc_mutex_lock( &p_input->stream.stream_lock );
 649         input_SelectES( p_input, p_stream->p_es );
 650         vlc_mutex_unlock( &p_input->stream.stream_lock );
 651     }
 652     p_stream->b_activated = p_stream->p_es->p_decoder_fifo ? VLC_TRUE
 653                                                            : VLC_FALSE;
 654     if( p_stream->b_activated && p_avi->b_seekable)
 655     {
 656         AVI_StreamSeek( p_input, p_avi, i_stream, p_avi->i_time );
 657     }
 658
 659     return p_stream->b_activated;
 660 #undef  p_stream
 661 }
 662
 663 static void    AVI_StreamStop( input_thread_t *p_input,
 664                                demux_sys_t *p_avi, int i_stream )
 665 {
 666 #define p_stream    p_avi->pp_info[i_stream]
 667
 668     if( !p_stream->b_activated )
 669     {
 670         msg_Warn( p_input, "stream[%d] already unselected", i_stream );
 671         return;
 672     }
 673
 674     if( p_stream->p_es->p_decoder_fifo )
 675     {
 676         vlc_mutex_lock( &p_input->stream.stream_lock );
 677         input_UnselectES( p_input, p_stream->p_es );
 678         vlc_mutex_unlock( &p_input->stream.stream_lock );
 679     }
 680
 681
 682     p_stream->b_activated = VLC_FALSE;
 683
 684 #undef  p_stream
 685 }
 686
 687 static int AVI_StreamStopFinishedStreams( input_thread_t *p_input,
 688                                            demux_sys_t *p_avi )
 689 {
 690     unsigned int i_stream;
 691     int b_end;
 692
 693     for( i_stream = 0,b_end = VLC_TRUE;
 694             i_stream < p_avi->i_streams; i_stream++ )
 695     {
 696 #define p_stream    p_avi->pp_info[i_stream]
 697         if( p_stream->i_idxposc >= p_stream->i_idxnb )
 698         {
 699             AVI_StreamStop( p_input, p_avi, i_stream );
 700         }
 701         else
 702         {
 703             b_end = VLC_FALSE;
 704         }
 705 #undef  p_stream
 706     }
 707     return( b_end );
 708 }
 709 /****************************************************************************
 710  * AVI_MovieGetLength give max streams length in second
 711  ****************************************************************************/
 712 static mtime_t  AVI_MovieGetLength( input_thread_t *p_input, demux_sys_t *p_avi )
 713 {
 714     unsigned int i_stream;
 715     mtime_t i_maxlength;
 716
 717     i_maxlength = 0;
 718     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 719     {
 720 #define p_stream  p_avi->pp_info[i_stream]
 721         mtime_t i_length;
 722         /* fix length for each stream */
 723         if( p_stream->i_idxnb < 1 || !p_stream->p_index )
 724         {
 725             continue;
 726         }
 727
 728         if( p_stream->i_samplesize )
 729         {
 730             i_length =
 731                 (mtime_t)( p_stream->p_index[p_stream->i_idxnb-1].i_lengthtotal +
 732                            p_stream->p_index[p_stream->i_idxnb-1].i_length ) *
 733                 (mtime_t)p_stream->i_scale /
 734                 (mtime_t)p_stream->i_rate /
 735                 (mtime_t)p_stream->i_samplesize;
 736         }
 737         else
 738         {
 739             i_length = (mtime_t)p_stream->i_idxnb *
 740                        (mtime_t)p_stream->i_scale /
 741                        (mtime_t)p_stream->i_rate;
 742         }
 743
 744         msg_Dbg( p_input,
 745                  "stream[%d] length:"I64Fd" (based on index)",
 746                  i_stream,
 747                  i_length );
 748         i_maxlength = __MAX( i_maxlength, i_length );
 749 #undef p_stream
 750     }
 751
 752     return i_maxlength;
 753 }
 754
 755 /*****************************************************************************
 756  * AVIEnd: frees unused data
 757  *****************************************************************************/
 758 static void __AVIEnd ( vlc_object_t * p_this )
 759 {
 760     input_thread_t *    p_input = (input_thread_t *)p_this;
 761     unsigned int i;
 762     demux_sys_t *p_avi = p_input->p_demux_data  ;
 763
 764     if( p_avi->pp_info )
 765     {
 766         for( i = 0; i < p_avi->i_streams; i++ )
 767         {
 768             if( p_avi->pp_info[i] )
 769             {
 770                 if( p_avi->pp_info[i]->p_index )
 771                 {
 772                       free( p_avi->pp_info[i]->p_index );
 773                 }
 774                 free( p_avi->pp_info[i] );
 775             }
 776         }
 777          free( p_avi->pp_info );
 778     }
 779 #ifdef __AVI_SUBTITLE__
 780     if( p_avi->p_sub )
 781     {
 782         subtitle_Close( p_avi->p_sub );
 783         p_avi->p_sub = NULL;
 784     }
 785 #endif
 786     AVI_ChunkFreeRoot( p_input, &p_avi->ck_root );
 787
 788     FREE( p_input->p_demux_data );
 789 }
 790
 791 /*****************************************************************************
 792  * AVIInit: check file and initializes AVI structures
 793  *****************************************************************************/
 794 static int AVIInit( vlc_object_t * p_this )
 795 {
 796     input_thread_t *    p_input = (input_thread_t *)p_this;
 797     avi_chunk_t         ck_riff;
 798     avi_chunk_list_t    *p_riff = (avi_chunk_list_t*)&ck_riff;
 799     avi_chunk_list_t    *p_hdrl, *p_movi;
 800 #if 0
 801     avi_chunk_list_t    *p_INFO;
 802     avi_chunk_strz_t    *p_name;
 803 #endif
 804     avi_chunk_avih_t    *p_avih;
 805     demux_sys_t *p_avi;
 806     es_descriptor_t *p_es = NULL; /* avoid warning */
 807     unsigned int i;
 808 #ifdef __AVI_SUBTITLE__
 809     mtime_t i_microsecperframe = 0; // for some subtitle format
 810 #endif
 811
 812     vlc_bool_t b_stream_audio, b_stream_video;
 813
 814     p_input->pf_demux = AVIDemux_Seekable;
 815     if( AVI_TestFile( p_input ) )
 816     {
 817         msg_Warn( p_input, "avi module discarded (invalid headr)" );
 818         return VLC_EGENERIC;
 819     }
 820
 821     /* Initialize access plug-in structures. */
 822     if( p_input->i_mtu == 0 )
 823     {
 824         /* Improve speed. */
 825         p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
 826     }
 827
 828     if( !( p_input->p_demux_data =
 829                     p_avi = malloc( sizeof(demux_sys_t) ) ) )
 830     {
 831         msg_Err( p_input, "out of memory" );
 832         return VLC_ENOMEM;
 833     }
 834     memset( p_avi, 0, sizeof( demux_sys_t ) );
 835     p_avi->i_time = 0;
 836     p_avi->i_pcr  = 0;
 837     p_avi->b_seekable = ( ( p_input->stream.b_seekable )
 838                         &&( p_input->stream.i_method == INPUT_METHOD_FILE ) );
 839     p_avi->i_movi_lastchunk_pos = 0;
 840
 841     /* *** for unseekable stream, automaticaly use AVIDemux_interleaved *** */
 842     if( !p_avi->b_seekable || config_GetInt( p_input, "avi-interleaved" ) )
 843     {
 844         p_input->pf_demux = AVIDemux_UnSeekable;
 845     }
 846
 847     if( AVI_ChunkReadRoot( p_input, &p_avi->ck_root, p_avi->b_seekable ) )
 848     {
 849         msg_Err( p_input, "avi module discarded (invalid file)" );
 850         return VLC_EGENERIC;
 851     }
 852     AVI_ChunkDumpDebug( p_input, &p_avi->ck_root );
 853
 854
 855     p_riff  = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 856                                                 AVIFOURCC_RIFF, 0 );
 857     p_hdrl  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 858                                                 AVIFOURCC_hdrl, 0 );
 859     p_movi  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 860                                                 AVIFOURCC_movi, 0 );
 861 #if 0
 862     p_INFO  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 863                                                 AVIFOURCC_INFO, 0 );
 864     p_name  = (avi_chunk_strz_t*)AVI_ChunkFind( p_INFO,
 865                                                 AVIFOURCC_INAM, 0 );
 866     if( p_name )
 867     {
 868
 869     }
 870 #endif
 871
 872     if( !p_hdrl || !p_movi )
 873     {
 874         msg_Err( p_input, "avi module discarded (invalid file)" );
 875         return VLC_EGENERIC;
 876     }
 877
 878     if( !( p_avih = (avi_chunk_avih_t*)AVI_ChunkFind( p_hdrl,
 879                                                       AVIFOURCC_avih, 0 ) ) )
 880     {
 881         msg_Err( p_input, "cannot find avih chunk" );
 882         return VLC_EGENERIC;
 883     }
 884     p_avi->i_streams = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
 885     if( p_avih->i_streams != p_avi->i_streams )
 886     {
 887         msg_Warn( p_input,
 888                   "found %d stream but %d are declared",
 889                   p_avi->i_streams,
 890                   p_avih->i_streams );
 891     }
 892     if( p_avi->i_streams == 0 )
 893     {
 894         AVIEnd( p_input );
 895         msg_Err( p_input, "no stream defined!" );
 896         return VLC_EGENERIC;
 897     }
 898
 899     /*  create one program */
 900     vlc_mutex_lock( &p_input->stream.stream_lock );
 901     if( input_InitStream( p_input, 0 ) == -1)
 902     {
 903         vlc_mutex_unlock( &p_input->stream.stream_lock );
 904         AVIEnd( p_input );
 905         msg_Err( p_input, "cannot init stream" );
 906         return VLC_EGENERIC;
 907     }
 908     if( input_AddProgram( p_input, 0, 0) == NULL )
 909     {
 910         vlc_mutex_unlock( &p_input->stream.stream_lock );
 911         AVIEnd( p_input );
 912         msg_Err( p_input, "cannot add program" );
 913         return VLC_EGENERIC;
 914     }
 915     p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 916     vlc_mutex_unlock( &p_input->stream.stream_lock );
 917
 918     /* print informations on streams */
 919     msg_Dbg( p_input, "AVIH: %d stream, flags %s%s%s%s ",
 920              p_avi->i_streams,
 921              p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 922              p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 923              p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 924              p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 925     {
 926         input_info_category_t *p_cat = input_InfoCategory( p_input, "Avi" );
 927         input_AddInfo( p_cat, "Number of streams", "%d", p_avi->i_streams );
 928         input_AddInfo( p_cat, "Flags", "%s%s%s%s",
 929                        p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 930                        p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 931                        p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 932                        p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 933     }
 934
 935     /* now read info on each stream and create ES */
 936     p_avi->pp_info = calloc( p_avi->i_streams,
 937                             sizeof( avi_stream_t* ) );
 938     memset( p_avi->pp_info,
 939             0,
 940             sizeof( avi_stream_t* ) * p_avi->i_streams );
 941
 942     for( i = 0 ; i < p_avi->i_streams; i++ )
 943     {
 944         avi_chunk_list_t    *p_avi_strl;
 945         avi_chunk_strh_t    *p_avi_strh;
 946         avi_chunk_strf_auds_t    *p_avi_strf_auds;
 947         avi_chunk_strf_vids_t    *p_avi_strf_vids;
 948         int     i_init_size;
 949         void    *p_init_data;
 950 #define p_info  p_avi->pp_info[i]
 951         p_info = malloc( sizeof(avi_stream_t ) );
 952         memset( p_info, 0, sizeof( avi_stream_t ) );
 953
 954         p_avi_strl = (avi_chunk_list_t*)AVI_ChunkFind( p_hdrl,
 955                                                        AVIFOURCC_strl, i );
 956         p_avi_strh = (avi_chunk_strh_t*)AVI_ChunkFind( p_avi_strl,
 957                                                        AVIFOURCC_strh, 0 );
 958         p_avi_strf_auds = (avi_chunk_strf_auds_t*)
 959             p_avi_strf_vids = (avi_chunk_strf_vids_t*)
 960                 AVI_ChunkFind( p_avi_strl, AVIFOURCC_strf, 0 );
 961
 962         if( !p_avi_strl || !p_avi_strh ||
 963                 ( !p_avi_strf_auds && !p_avi_strf_vids ) )
 964         {
 965             msg_Warn( p_input, "stream[%d] incomlete", i );
 966             continue;
 967         }
 968
 969         /* *** Init p_info *** */
 970         p_info->i_rate  = p_avi_strh->i_rate;
 971         p_info->i_scale = p_avi_strh->i_scale;
 972         p_info->i_samplesize = p_avi_strh->i_samplesize;
 973         msg_Dbg( p_input, "stream[%d] rate:%d scale:%d samplesize:%d",
 974                  i,
 975                  p_info->i_rate, p_info->i_scale, p_info->i_samplesize );
 976         switch( p_avi_strh->i_type )
 977         {
 978             case( AVIFOURCC_auds ):
 979                 p_info->i_cat = AUDIO_ES;
 980                 p_info->i_fourcc =
 981                     AVI_FourccGetCodec( AUDIO_ES,
 982                                         p_avi_strf_auds->p_wf->wFormatTag );
 983                 p_info->i_codec  = p_info->i_fourcc;
 984                 i_init_size = p_avi_strf_auds->i_chunk_size;
 985                 p_init_data = p_avi_strf_auds->p_wf;
 986                 msg_Dbg( p_input, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
 987                         i,
 988                         p_avi_strf_auds->p_wf->wFormatTag,
 989                         p_avi_strf_auds->p_wf->nChannels,
 990                         p_avi_strf_auds->p_wf->nSamplesPerSec,
 991                         p_avi_strf_auds->p_wf->wBitsPerSample );
 992                 {
 993                     char hepp[sizeof("Stream") + 10];
 994                     input_info_category_t *p_cat;
 995                     sprintf(hepp, "Stream %d", i);
 996                     p_cat = input_InfoCategory( p_input, hepp);
 997                     input_AddInfo( p_cat, "Type", "audio(0x%x)",
 998                                    p_avi_strf_auds->p_wf->wFormatTag );
 999                     input_AddInfo( p_cat, "Codec", "%4.4s",
1000                                    (const char*)&(p_info->i_codec) );
1001                     input_AddInfo( p_cat, "Channels", "%d",
1002                                    p_avi_strf_auds->p_wf->nChannels );
1003                     input_AddInfo( p_cat, "Samplerate", "%d",
1004                                    p_avi_strf_auds->p_wf->nSamplesPerSec );
1005                     input_AddInfo( p_cat, "Bits Per Sample", "%d",
1006                                    p_avi_strf_auds->p_wf->wBitsPerSample );
1007                 }
1008                 break;
1009
1010             case( AVIFOURCC_vids ):
1011                 p_info->i_cat = VIDEO_ES;
1012                 /* XXX quick hack for playing ffmpeg video, I don't know
1013                     who is doing something wrong */
1014                 p_info->i_samplesize = 0;
1015                 p_info->i_fourcc = p_avi_strf_vids->p_bih->biCompression;
1016                 p_info->i_codec =
1017                     AVI_FourccGetCodec( VIDEO_ES, p_info->i_fourcc );
1018                 i_init_size = p_avi_strf_vids->i_chunk_size;
1019                 p_init_data = p_avi_strf_vids->p_bih;
1020                 msg_Dbg( p_input, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
1021                         i,
1022                          (char*)&p_avi_strf_vids->p_bih->biCompression,
1023                          p_avi_strf_vids->p_bih->biWidth,
1024                          p_avi_strf_vids->p_bih->biHeight,
1025                          p_avi_strf_vids->p_bih->biBitCount,
1026                          (float)p_info->i_rate /
1027                              (float)p_info->i_scale );
1028                 {
1029                     char hepp[sizeof("Stream") + 10];
1030                     input_info_category_t *p_cat;
1031                     sprintf(hepp, "stream %d", i);
1032                     p_cat = input_InfoCategory( p_input, hepp);
1033                     input_AddInfo( p_cat, "Type", "video" );
1034                     input_AddInfo( p_cat, "Codec", "%4.4s",
1035                                    (const char*)&(p_info->i_codec) );
1036                     input_AddInfo( p_cat, "Resolution", "%dx%d",
1037                                    p_avi_strf_vids->p_bih->biWidth,
1038                                    p_avi_strf_vids->p_bih->biHeight );
1039                     input_AddInfo( p_cat, "Frame Rate", "%f",
1040                                    (float)p_info->i_rate /
1041                                        (float)p_info->i_scale );
1042                     input_AddInfo( p_cat, "Bits Per Pixel", "%d",
1043                                    p_avi_strf_vids->p_bih->biBitCount );
1044                 }
1045 #ifdef __AVI_SUBTITLE__
1046                 if( i_microsecperframe == 0 )
1047                 {
1048                     i_microsecperframe = (mtime_t)1000000 *
1049                                          (mtime_t)p_info->i_scale /
1050                                          (mtime_t)p_info->i_rate;
1051                 }
1052 #endif
1053                 break;
1054             default:
1055                 msg_Warn( p_input, "stream[%d] unknown type", i );
1056                 p_info->i_cat = UNKNOWN_ES;
1057                 i_init_size = 0;
1058                 p_init_data = NULL;
1059                 {
1060                     char psz_cat[32]; /* We'll clip i just in case */
1061                     input_info_category_t *p_cat;
1062                     sprintf( psz_cat, "stream %d", __MIN( i, 100000 ) );
1063                     p_cat = input_InfoCategory( p_input, psz_cat );
1064                     input_AddInfo( p_cat, "Type", "unknown" );
1065                 }
1066                 break;
1067         }
1068         p_info->b_activated = VLC_FALSE;
1069         /* add one ES */
1070         vlc_mutex_lock( &p_input->stream.stream_lock );
1071         p_info->p_es =
1072             p_es = input_AddES( p_input,
1073                                 p_input->stream.p_selected_program, 1+i,
1074                                 0 );
1075         vlc_mutex_unlock( &p_input->stream.stream_lock );
1076         p_es->i_stream_id =i; /* XXX: i don't use it */
1077         p_es->i_fourcc = p_info->i_fourcc;
1078         p_es->i_cat = p_info->i_cat;
1079         if( p_es->i_cat == AUDIO_ES )
1080         {
1081             p_es->p_waveformatex = malloc( i_init_size );
1082             memcpy( p_es->p_waveformatex, p_init_data, i_init_size );
1083         }
1084         else if( p_es->i_cat == VIDEO_ES )
1085         {
1086             p_es->p_bitmapinfoheader = malloc( i_init_size );
1087             memcpy( p_es->p_bitmapinfoheader, p_init_data, i_init_size );
1088         }
1089 #undef p_info
1090     }
1091
1092 #ifdef __AVI_SUBTITLE__
1093     if( ( p_avi->p_sub = subtitle_New( p_input, NULL, i_microsecperframe ) ) )
1094     {
1095         subtitle_Select( p_avi->p_sub );
1096     }
1097 #endif
1098
1099     if( config_GetInt( p_input, "avi-index" ) )
1100     {
1101         if( p_avi->b_seekable )
1102         {
1103             AVI_IndexCreate( p_input );
1104         }
1105         else
1106         {
1107             msg_Warn( p_input, "cannot create index (unseekable stream)" );
1108             AVI_IndexLoad( p_input );
1109         }
1110     }
1111     else
1112     {
1113         AVI_IndexLoad( p_input );
1114     }
1115
1116     /* *** movie length in sec *** */
1117     p_avi->i_length = AVI_MovieGetLength( p_input, p_avi );
1118     if( p_avi->i_length < (mtime_t)p_avih->i_totalframes *
1119                           (mtime_t)p_avih->i_microsecperframe /
1120                           (mtime_t)1000000 )
1121     {
1122         msg_Warn( p_input, "broken or missing index, 'seek' will be axproximative or will have strange behavour" );
1123     }
1124
1125     vlc_mutex_lock( &p_input->stream.stream_lock );
1126     if( p_avi->i_length )
1127     {
1128         p_input->stream.i_mux_rate =
1129             p_input->stream.p_selected_area->i_size / 50 / p_avi->i_length;
1130     }
1131     else
1132     {
1133         p_input->stream.i_mux_rate = 0;
1134     }
1135     vlc_mutex_unlock( &p_input->stream.stream_lock );
1136
1137     b_stream_audio = VLC_FALSE;
1138     b_stream_video = VLC_FALSE;
1139
1140     for( i = 0; i < p_avi->i_streams; i++ )
1141     {
1142 #define p_info  p_avi->pp_info[i]
1143         switch( p_info->p_es->i_cat )
1144         {
1145             case( VIDEO_ES ):
1146
1147                 if( !b_stream_video )
1148                 {
1149                     b_stream_video = AVI_StreamStart( p_input, p_avi, i );
1150                 }
1151                 break;
1152
1153             case( AUDIO_ES ):
1154                 if( !b_stream_audio )
1155                 {
1156                     b_stream_audio = AVI_StreamStart( p_input, p_avi, i );
1157                 }
1158                 break;
1159             default:
1160                 break;
1161         }
1162 #undef p_info
1163     }
1164
1165     if( !b_stream_video )
1166     {
1167         msg_Warn( p_input, "no video stream found" );
1168     }
1169     if( !b_stream_audio )
1170     {
1171         msg_Warn( p_input, "no audio stream found!" );
1172     }
1173
1174     vlc_mutex_lock( &p_input->stream.stream_lock );
1175     p_input->stream.p_selected_program->b_is_ok = 1;
1176     vlc_mutex_unlock( &p_input->stream.stream_lock );
1177
1178     if( p_avi->b_seekable )
1179     {
1180         AVI_ChunkGoto( p_input, p_movi );
1181     }
1182     else
1183     {
1184         // already at begining of p_movi
1185     }
1186     AVI_SkipBytes( p_input, 12 ); // enter in p_movi
1187
1188     p_avi->i_movi_begin = p_movi->i_chunk_pos;
1189     return VLC_SUCCESS;
1190 }
1191
1192
1193
1194
1195 /*****************************************************************************
1196  * Function to convert pts to chunk or byte
1197  *****************************************************************************/
1198
1199 static inline mtime_t AVI_PTSToChunk( avi_stream_t *p_info,
1200                                         mtime_t i_pts )
1201 {
1202     return (mtime_t)((int64_t)i_pts *
1203                      (int64_t)p_info->i_rate /
1204                      (int64_t)p_info->i_scale /
1205                      (int64_t)1000000 );
1206 }
1207 static inline mtime_t AVI_PTSToByte( avi_stream_t *p_info,
1208                                        mtime_t i_pts )
1209 {
1210     return (mtime_t)((int64_t)i_pts *
1211                      (int64_t)p_info->i_rate /
1212                      (int64_t)p_info->i_scale /
1213                      (int64_t)1000000 *
1214                      (int64_t)p_info->i_samplesize );
1215 }
1216
1217 static mtime_t AVI_GetDPTS( avi_stream_t *p_stream, int i_count )
1218 {
1219     if( p_stream->i_samplesize )
1220     {
1221         return (mtime_t)( (int64_t)1000000 *
1222                    (int64_t)i_count *
1223                    (int64_t)p_stream->i_scale /
1224                    (int64_t)p_stream->i_rate /
1225                    (int64_t)p_stream->i_samplesize );
1226     }
1227     else
1228     {
1229         return (mtime_t)( (int64_t)1000000 *
1230                    (int64_t)i_count *
1231                    (int64_t)p_stream->i_scale /
1232                    (int64_t)p_stream->i_rate);
1233     }
1234
1235 }
1236
1237 static mtime_t AVI_GetPTS( avi_stream_t *p_info )
1238 {
1239
1240     if( p_info->i_samplesize )
1241     {
1242         /* we need a valid entry we will emulate one */
1243         int64_t i_len;
1244         if( p_info->i_idxposc == p_info->i_idxnb )
1245         {
1246             if( p_info->i_idxposc )
1247             {
1248                 /* use the last entry */
1249                 i_len = p_info->p_index[p_info->i_idxnb - 1].i_lengthtotal
1250                             + p_info->p_index[p_info->i_idxnb - 1].i_length
1251                             + p_info->i_idxposb; /* should be 0 */
1252             }
1253             else
1254             {
1255                 i_len = p_info->i_idxposb;
1256                 /* no valid entry use only offset*/
1257             }
1258         }
1259         else
1260         {
1261             i_len = p_info->p_index[p_info->i_idxposc].i_lengthtotal
1262                                 + p_info->i_idxposb;
1263         }
1264         return (mtime_t)( (int64_t)1000000 *
1265                   (int64_t)i_len *
1266                    (int64_t)p_info->i_scale /
1267                    (int64_t)p_info->i_rate /
1268                    (int64_t)p_info->i_samplesize );
1269     }
1270     else
1271     {
1272         /* even if p_info->i_idxposc isn't valid, there isn't any problem */
1273         return (mtime_t)( (int64_t)1000000 *
1274                    (int64_t)(p_info->i_idxposc ) *
1275                    (int64_t)p_info->i_scale /
1276                    (int64_t)p_info->i_rate);
1277     }
1278 }
1279
1280 static int AVI_StreamChunkFind( input_thread_t *p_input,
1281                                 unsigned int i_stream )
1282 {
1283     demux_sys_t *p_avi = p_input->p_demux_data;
1284     avi_packet_t avi_pk;
1285
1286     /* find first chunk of i_stream that isn't in index */
1287
1288     if( p_avi->i_movi_lastchunk_pos >= p_avi->i_movi_begin )
1289     {
1290         AVI_SeekAbsolute( p_input, p_avi->i_movi_lastchunk_pos );
1291         if( AVI_PacketNext( p_input ) )
1292         {
1293             return VLC_EGENERIC;
1294         }
1295     }
1296     else
1297     {
1298         AVI_SeekAbsolute( p_input, p_avi->i_movi_begin );
1299     }
1300
1301     for( ;; )
1302     {
1303
1304         if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1305         {
1306             msg_Warn( p_input, "cannot get packet header" );
1307             return VLC_EGENERIC;
1308         }
1309         if( avi_pk.i_stream >= p_avi->i_streams ||
1310             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1311         {
1312             switch( avi_pk.i_fourcc )
1313             {
1314                 case AVIFOURCC_LIST:
1315                     AVI_SkipBytes( p_input, 12 );
1316                     break;
1317                 default:
1318                     if( AVI_PacketNext( p_input ) )
1319                     {
1320                         return VLC_EGENERIC;
1321                     }
1322                     break;
1323             }
1324         }
1325         else
1326         {
1327             /* add this chunk to the index */
1328             AVIIndexEntry_t index;
1329
1330             index.i_id = avi_pk.i_fourcc;
1331             index.i_flags =
1332                AVI_GetKeyFlag(p_avi->pp_info[avi_pk.i_stream]->i_codec,
1333                               avi_pk.i_peek);
1334             index.i_pos = avi_pk.i_pos;
1335             index.i_length = avi_pk.i_size;
1336             AVI_IndexAddEntry( p_avi, avi_pk.i_stream, &index );
1337
1338             if( avi_pk.i_stream == i_stream  )
1339             {
1340                 return VLC_SUCCESS;
1341             }
1342
1343             if( AVI_PacketNext( p_input ) )
1344             {
1345                 return VLC_EGENERIC;
1346             }
1347         }
1348     }
1349 }
1350
1351
1352 /* be sure that i_ck will be a valid index entry */
1353 static int AVI_SetStreamChunk( input_thread_t    *p_input,
1354                                unsigned int i_stream,
1355                                unsigned int i_ck )
1356 {
1357     demux_sys_t *p_avi = p_input->p_demux_data;
1358     avi_stream_t *p_stream = p_avi->pp_info[i_stream];
1359
1360     p_stream->i_idxposc = i_ck;
1361     p_stream->i_idxposb = 0;
1362
1363     if(  i_ck >= p_stream->i_idxnb )
1364     {
1365         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1366         do
1367         {
1368             p_stream->i_idxposc++;
1369             if( AVI_StreamChunkFind( p_input, i_stream ) )
1370             {
1371                 return VLC_EGENERIC;
1372             }
1373
1374         } while( p_stream->i_idxposc < i_ck );
1375     }
1376
1377     return VLC_SUCCESS;
1378 }
1379
1380
1381 /* XXX FIXME up to now, we assume that all chunk are one after one */
1382 static int AVI_SetStreamBytes( input_thread_t    *p_input,
1383                                unsigned int i_stream,
1384                                off_t   i_byte )
1385 {
1386     demux_sys_t *p_avi = p_input->p_demux_data;
1387     avi_stream_t *p_stream = p_avi->pp_info[i_stream];
1388
1389     if( ( p_stream->i_idxnb > 0 )
1390         &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1391                 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1392     {
1393         /* index is valid to find the ck */
1394         /* uses dichototmie to be fast enougth */
1395         int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1396         int i_idxmax  = p_stream->i_idxnb;
1397         int i_idxmin  = 0;
1398         for( ;; )
1399         {
1400             if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1401             {
1402                 i_idxmax  = i_idxposc ;
1403                 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1404             }
1405             else
1406             {
1407                 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1408                         p_stream->p_index[i_idxposc].i_length <= i_byte)
1409                 {
1410                     i_idxmin  = i_idxposc ;
1411                     i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1412                 }
1413                 else
1414                 {
1415                     p_stream->i_idxposc = i_idxposc;
1416                     p_stream->i_idxposb = i_byte -
1417                             p_stream->p_index[i_idxposc].i_lengthtotal;
1418                     return VLC_SUCCESS;
1419                 }
1420             }
1421         }
1422
1423     }
1424     else
1425     {
1426         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1427         p_stream->i_idxposb = 0;
1428         do
1429         {
1430             p_stream->i_idxposc++;
1431             if( AVI_StreamChunkFind( p_input, i_stream ) )
1432             {
1433                 return VLC_EGENERIC;
1434             }
1435
1436         } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1437                     p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1438
1439         p_stream->i_idxposb = i_byte -
1440                        p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1441         return VLC_SUCCESS;
1442     }
1443 }
1444
1445 static int AVI_StreamSeek( input_thread_t *p_input,
1446                            demux_sys_t  *p_avi,
1447                            int i_stream,
1448                            mtime_t i_date )
1449 {
1450 #define p_stream    p_avi->pp_info[i_stream]
1451     mtime_t i_oldpts;
1452
1453     i_oldpts = AVI_GetPTS( p_stream );
1454
1455     if( !p_stream->i_samplesize )
1456     {
1457         if( AVI_SetStreamChunk( p_input,
1458                                 i_stream,
1459                                 AVI_PTSToChunk( p_stream, i_date ) ) )
1460         {
1461             return VLC_EGENERIC;
1462         }
1463
1464         /* search key frame */
1465         msg_Dbg( p_input,
1466                  "old:"I64Fd" %s new "I64Fd,
1467                  i_oldpts,
1468                  i_oldpts > i_date ? ">" : "<",
1469                  i_date );
1470
1471         if( i_date < i_oldpts )
1472         {
1473             while( p_stream->i_idxposc > 0 &&
1474                !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1475                                                             AVIIF_KEYFRAME ) )
1476             {
1477                 if( AVI_SetStreamChunk( p_input,
1478                                         i_stream,
1479                                         p_stream->i_idxposc - 1 ) )
1480                 {
1481                     return VLC_EGENERIC;
1482                 }
1483             }
1484         }
1485         else
1486         {
1487             while( p_stream->i_idxposc < p_stream->i_idxnb &&
1488                     !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1489                                                             AVIIF_KEYFRAME ) )
1490             {
1491                 if( AVI_SetStreamChunk( p_input,
1492                                         i_stream,
1493                                         p_stream->i_idxposc + 1 ) )
1494                 {
1495                     return VLC_EGENERIC;
1496                 }
1497             }
1498         }
1499     }
1500     else
1501     {
1502         if( AVI_SetStreamBytes( p_input,
1503                                 i_stream,
1504                                 AVI_PTSToByte( p_stream, i_date ) ) )
1505         {
1506             return VLC_EGENERIC;
1507         }
1508     }
1509     return VLC_SUCCESS;
1510 #undef p_stream
1511 }
1512
1513 /*****************************************************************************
1514  * AVISeek: goto to i_date or i_percent
1515  *****************************************************************************
1516  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1517  *****************************************************************************/
1518 static int    AVISeek   ( input_thread_t *p_input,
1519                           mtime_t i_date, int i_percent )
1520 {
1521
1522     demux_sys_t *p_avi = p_input->p_demux_data;
1523     unsigned int i_stream;
1524     msg_Dbg( p_input,
1525              "seek requested: "I64Fd" secondes %d%%",
1526              i_date / 1000000,
1527              i_percent );
1528
1529     if( p_avi->b_seekable )
1530     {
1531         if( !p_avi->i_length )
1532         {
1533             avi_stream_t *p_stream;
1534             uint64_t i_pos;
1535
1536             /* use i_percent to create a true i_date */
1537             msg_Warn( p_input,
1538                       "mmh, seeking without index at %d%%"
1539                       " work only for interleaved file", i_percent );
1540
1541             if( i_percent >= 100 )
1542             {
1543                 msg_Warn( p_input, "cannot seek so far !" );
1544                 return( -1 );
1545             }
1546             i_percent = __MAX( i_percent, 0 );
1547
1548             /* try to find chunk that is at i_percent or the file */
1549             i_pos = __MAX( i_percent *
1550                            p_input->stream.p_selected_area->i_size / 100,
1551                            p_avi->i_movi_begin );
1552             /* search first selected stream */
1553             for( i_stream = 0, p_stream = NULL;
1554                         i_stream < p_avi->i_streams; i_stream++ )
1555             {
1556                 p_stream = p_avi->pp_info[i_stream];
1557                 if( p_stream->b_activated )
1558                 {
1559                     break;
1560                 }
1561             }
1562             if( !p_stream || !p_stream->b_activated )
1563             {
1564                 msg_Warn( p_input, "cannot find any selected stream" );
1565                 return( -1 );
1566             }
1567
1568             /* be sure that the index exit */
1569             if( AVI_SetStreamChunk( p_input,
1570                                     i_stream,
1571                                     0 ) )
1572             {
1573                 msg_Warn( p_input, "cannot seek" );
1574                 return( -1 );
1575             }
1576
1577             while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1578                p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1579             {
1580                 /* search after i_idxposc */
1581                 if( AVI_SetStreamChunk( p_input,
1582                                         i_stream, p_stream->i_idxposc + 1 ) )
1583                 {
1584                     msg_Warn( p_input, "cannot seek" );
1585                     return( -1 );
1586                 }
1587             }
1588             i_date = AVI_GetPTS( p_stream );
1589             /* TODO better support for i_samplesize != 0 */
1590             msg_Dbg( p_input, "estimate date "I64Fd, i_date );
1591         }
1592
1593 #define p_stream    p_avi->pp_info[i_stream]
1594         p_avi->i_time = 0;
1595         /* seek for chunk based streams */
1596         for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1597         {
1598             if( p_stream->b_activated && !p_stream->i_samplesize )
1599 //            if( p_stream->b_activated )
1600             {
1601                 AVI_StreamSeek( p_input, p_avi, i_stream, i_date );
1602                 p_avi->i_time = __MAX( AVI_GetPTS( p_stream ),
1603                                         p_avi->i_time );
1604             }
1605         }
1606 #if 1
1607         if( p_avi->i_time )
1608         {
1609             i_date = p_avi->i_time;
1610         }
1611         /* seek for bytes based streams */
1612         for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1613         {
1614             if( p_stream->b_activated && p_stream->i_samplesize )
1615             {
1616                 AVI_StreamSeek( p_input, p_avi, i_stream, i_date );
1617 //                p_avi->i_time = __MAX( AVI_GetPTS( p_stream ), p_avi->i_time );
1618             }
1619         }
1620         msg_Dbg( p_input, "seek: "I64Fd" secondes", p_avi->i_time /1000000 );
1621         /* set true movie time */
1622 #endif
1623         if( !p_avi->i_time )
1624         {
1625             p_avi->i_time = i_date;
1626         }
1627 #undef p_stream
1628         return( 1 );
1629     }
1630     else
1631     {
1632         msg_Err( p_input, "shouldn't yet be executed" );
1633         return( -1 );
1634     }
1635 }
1636
1637 #if 0
1638 static pes_packet_t *PES_split( input_thread_t *p_input, avi_stream_t *p_stream, pes_packet_t *p_pes )
1639 {
1640     pes_packet_t  *p_pes2;
1641     data_packet_t *p_data;
1642     int           i_nb_data;
1643
1644     if( p_pes->i_nb_data < 2 )
1645     {
1646         return( NULL );
1647     }
1648     p_pes2 = input_NewPES( p_input->p_method_data );
1649     p_pes2->i_pts = p_pes->i_pts;
1650     p_pes2->i_dts = p_pes->i_dts;
1651     p_pes2->i_nb_data = p_pes->i_nb_data/2;
1652     p_pes2->i_pes_size = 0;
1653     for( i_nb_data = 0, p_data = p_pes->p_first;
1654          i_nb_data < p_pes2->i_nb_data;
1655          i_nb_data++, p_data = p_data->p_next )
1656     {
1657         p_pes2->i_pes_size +=
1658             p_data->p_payload_end - p_data->p_payload_start;
1659         p_pes2->p_last = p_data;
1660     }
1661     p_pes2->p_first = p_pes->p_first;
1662     p_pes2->p_last->p_next = NULL;
1663
1664     p_pes->p_first = p_data;
1665     p_pes->i_pes_size -= p_pes2->i_pes_size;
1666     p_pes->i_nb_data -= p_pes2->i_nb_data;
1667 //    p_pes->i_pts += AVI_GetDPTS( p_stream, p_pes2->i_pes_size );
1668 //    p_pes->i_dts += AVI_GetDPTS( p_stream, p_pes2->i_pes_size );
1669     p_pes->i_pts = 0;
1670     p_pes->i_dts = 0;
1671     return( p_pes2 );
1672 }
1673 #endif
1674
1675 /*****************************************************************************
1676  * AVIDemux_Seekable: reads and demuxes data packets for stream seekable
1677  *****************************************************************************
1678  * AVIDemux: reads and demuxes data packets
1679  *****************************************************************************
1680  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1681  *****************************************************************************/
1682 typedef struct avi_stream_toread_s
1683 {
1684     vlc_bool_t b_ok;
1685
1686     int i_toread;
1687
1688     off_t i_posf; // where we will read :
1689                   // if i_idxposb == 0 : begining of chunk (+8 to acces data)
1690                   // else : point on data directly
1691 } avi_stream_toread_t;
1692
1693 static int AVIDemux_Seekable( input_thread_t *p_input )
1694 {
1695     unsigned int i_stream_count;
1696     unsigned int i_stream;
1697     vlc_bool_t b_stream;
1698     vlc_bool_t b_play_audio;
1699     vlc_bool_t b_video; /* is there some video track selected */
1700     // cannot be more than 100 stream (dcXX or wbXX)
1701     avi_stream_toread_t toread[100];
1702
1703     demux_sys_t *p_avi = p_input->p_demux_data;
1704
1705
1706     /* detect new selected/unselected streams */
1707     for( i_stream = 0,i_stream_count= 0, b_video = VLC_FALSE;
1708             i_stream < p_avi->i_streams; i_stream++ )
1709     {
1710 #define p_stream    p_avi->pp_info[i_stream]
1711         if( p_stream->p_es )
1712         {
1713             if( p_stream->p_es->p_decoder_fifo &&
1714                 !p_stream->b_activated )
1715             {
1716                 AVI_StreamStart( p_input, p_avi, i_stream );
1717             }
1718             else
1719             if( !p_stream->p_es->p_decoder_fifo &&
1720                 p_stream->b_activated )
1721             {
1722                 AVI_StreamStop( p_input, p_avi, i_stream );
1723             }
1724         }
1725         if( p_stream->b_activated )
1726         {
1727             i_stream_count++;
1728             if( p_stream->i_cat == VIDEO_ES )
1729             {
1730                 b_video = VLC_TRUE;
1731             }
1732         }
1733 #undef  p_stream
1734     }
1735
1736     if( i_stream_count <= 0 )
1737     {
1738         msg_Warn( p_input, "no track selected, exiting..." );
1739         return( 0 );
1740     }
1741
1742     if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
1743     {
1744         mtime_t i_date;
1745         int i_percent;
1746         /* first wait for empty buffer, arbitrary time FIXME */
1747         //msleep( DEFAULT_PTS_DELAY );
1748
1749         i_date = (mtime_t)1000000 *
1750                  (mtime_t)p_avi->i_length *
1751                  (mtime_t)AVI_TellAbsolute( p_input ) /
1752                  (mtime_t)p_input->stream.p_selected_area->i_size;
1753         i_percent = 100 * AVI_TellAbsolute( p_input ) /
1754                         p_input->stream.p_selected_area->i_size;
1755
1756 //        input_ClockInit( p_input->stream.p_selected_program );
1757         AVISeek( p_input, i_date, i_percent);
1758
1759 #ifdef __AVI_SUBTITLE__
1760         if( p_avi->p_sub )
1761         {
1762             subtitle_Seek( p_avi->p_sub, p_avi->i_time );
1763         }
1764 #endif
1765     }
1766
1767
1768     /* wait for the good time */
1769
1770     p_avi->i_pcr = p_avi->i_time * 9 / 100;
1771
1772     input_ClockManageRef( p_input,
1773                           p_input->stream.p_selected_program,
1774                           p_avi->i_pcr );
1775
1776
1777     p_avi->i_time += 25*1000;  /* read 25ms */
1778
1779 #ifdef __AVI_SUBTITLE__
1780     if( p_avi->p_sub )
1781     {
1782         subtitle_Demux( p_avi->p_sub, p_avi->i_time );
1783     }
1784 #endif
1785
1786     /* *** send audio data to decoder if rate == DEFAULT_RATE or no video *** */
1787     vlc_mutex_lock( &p_input->stream.stream_lock );
1788     if( p_input->stream.control.i_rate == DEFAULT_RATE || !b_video )
1789     {
1790         b_play_audio = VLC_TRUE;
1791     }
1792     else
1793     {
1794         b_play_audio = VLC_FALSE;
1795     }
1796     vlc_mutex_unlock( &p_input->stream.stream_lock );
1797
1798     /* init toread */
1799     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1800     {
1801 #define p_stream    p_avi->pp_info[i_stream]
1802         mtime_t i_dpts;
1803
1804         toread[i_stream].b_ok = p_stream->b_activated;
1805         if( p_stream->i_idxposc < p_stream->i_idxnb )
1806         {
1807             toread[i_stream].i_posf =
1808                 p_stream->p_index[p_stream->i_idxposc].i_pos;
1809            if( p_stream->i_idxposb > 0 )
1810            {
1811                 toread[i_stream].i_posf += 8 + p_stream->i_idxposb;
1812            }
1813         }
1814         else
1815         {
1816             toread[i_stream].i_posf = -1;
1817         }
1818
1819         i_dpts = p_avi->i_time - AVI_GetPTS( p_stream  );
1820
1821         if( p_stream->i_samplesize )
1822         {
1823             toread[i_stream].i_toread = AVI_PTSToByte( p_stream,
1824                                                        __ABS( i_dpts ) );
1825         }
1826         else
1827         {
1828             toread[i_stream].i_toread = AVI_PTSToChunk( p_stream,
1829                                                         __ABS( i_dpts ) );
1830         }
1831
1832         if( i_dpts < 0 )
1833         {
1834             toread[i_stream].i_toread *= -1;
1835         }
1836 #undef  p_stream
1837     }
1838
1839     b_stream = VLC_FALSE;
1840
1841     for( ;; )
1842     {
1843 #define p_stream    p_avi->pp_info[i_stream]
1844         vlc_bool_t       b_done;
1845         pes_packet_t    *p_pes;
1846         off_t i_pos;
1847         unsigned int i;
1848         size_t i_size;
1849
1850         /* search for first chunk to be read */
1851         for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_avi->i_streams; i++ )
1852         {
1853             if( !toread[i].b_ok ||
1854                 AVI_GetDPTS( p_avi->pp_info[i],
1855                              toread[i].i_toread ) <= -25 * 1000 )
1856             {
1857                 continue;
1858             }
1859
1860             if( toread[i].i_toread > 0 )
1861             {
1862                 b_done = VLC_FALSE; // not yet finished
1863             }
1864
1865             if( toread[i].i_posf > 0 )
1866             {
1867                 if( i_pos == -1 || i_pos > toread[i_stream].i_posf )
1868                 {
1869                     i_stream = i;
1870                     i_pos = toread[i].i_posf;
1871                 }
1872             }
1873         }
1874
1875         if( b_done )
1876         {
1877 //            return( b_stream ? 1 : 0 );
1878             return( 1 );
1879         }
1880
1881         if( i_pos == -1 )
1882         {
1883             /* no valid index, we will parse directly the stream
1884              * in case we fail we will disable all finished stream */
1885             if( p_avi->i_movi_lastchunk_pos >= p_avi->i_movi_begin )
1886             {
1887                 AVI_SeekAbsolute( p_input, p_avi->i_movi_lastchunk_pos );
1888                 if( AVI_PacketNext( p_input ) )
1889                 {
1890                     return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1891                 }
1892             }
1893             else
1894             {
1895                 AVI_SeekAbsolute( p_input, p_avi->i_movi_begin );
1896             }
1897
1898             for( ;; )
1899             {
1900                 avi_packet_t avi_pk;
1901
1902                 if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1903                 {
1904                     msg_Warn( p_input,
1905                              "cannot get packet header, track disabled" );
1906                     return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1907                 }
1908                 if( avi_pk.i_stream >= p_avi->i_streams ||
1909                     ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1910                 {
1911                     switch( avi_pk.i_fourcc )
1912                     {
1913                         case AVIFOURCC_LIST:
1914                             AVI_SkipBytes( p_input, 12 );
1915                             break;
1916                         default:
1917                             if( AVI_PacketNext( p_input ) )
1918                             {
1919                                 msg_Warn( p_input,
1920                                           "cannot skip packet, track disabled" );
1921                                 return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1922                             }
1923                             break;
1924                     }
1925                     continue;
1926                 }
1927                 else
1928                 {
1929                     /* add this chunk to the index */
1930                     AVIIndexEntry_t index;
1931
1932                     index.i_id = avi_pk.i_fourcc;
1933                     index.i_flags =
1934                        AVI_GetKeyFlag(p_avi->pp_info[avi_pk.i_stream]->i_codec,
1935                                       avi_pk.i_peek);
1936                     index.i_pos = avi_pk.i_pos;
1937                     index.i_length = avi_pk.i_size;
1938                     AVI_IndexAddEntry( p_avi, avi_pk.i_stream, &index );
1939
1940                     i_stream = avi_pk.i_stream;
1941                     /* do we will read this data ? */
1942                     if( AVI_GetDPTS( p_stream,
1943                              toread[i_stream].i_toread ) > -25 * 1000 )
1944                     {
1945                         break;
1946                     }
1947                     else
1948                     {
1949                         if( AVI_PacketNext( p_input ) )
1950                         {
1951                             msg_Warn( p_input,
1952                                       "cannot skip packet, track disabled" );
1953                             return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1954                         }
1955                     }
1956                 }
1957             }
1958
1959         }
1960         else
1961         {
1962             AVI_SeekAbsolute( p_input, i_pos );
1963         }
1964
1965         /* read thoses data */
1966         if( p_stream->i_samplesize )
1967         {
1968             unsigned int i_toread;
1969
1970             if( ( i_toread = toread[i_stream].i_toread ) <= 0 )
1971             {
1972                 if( p_stream->i_samplesize > 1 )
1973                 {
1974                     i_toread = p_stream->i_samplesize;
1975                 }
1976                 else
1977                 {
1978                     i_toread = __MAX( AVI_PTSToByte( p_stream, 20 * 1000 ), 100 );
1979                 }
1980             }
1981             i_size = __MIN( p_stream->p_index[p_stream->i_idxposc].i_length -
1982                                 p_stream->i_idxposb,
1983                             i_toread );
1984         }
1985         else
1986         {
1987             i_size = p_stream->p_index[p_stream->i_idxposc].i_length;
1988         }
1989
1990         if( p_stream->i_idxposb == 0 )
1991         {
1992             i_size += 8; // need to read and skip header
1993         }
1994
1995         if( input_ReadInPES( p_input, &p_pes, __EVEN( i_size ) ) < 0 )
1996         {
1997             msg_Warn( p_input, "failled reading data" );
1998             AVI_StreamStop( p_input, p_avi, i_stream );
1999             toread[i_stream].b_ok = VLC_FALSE;
2000             continue;
2001         }
2002
2003         if( i_size % 2 )    // read was padded on word boundary
2004         {
2005             p_pes->p_last->p_payload_end--;
2006             p_pes->i_pes_size--;
2007         }
2008         // skip header
2009         if( p_stream->i_idxposb == 0 )
2010         {
2011             p_pes->p_first->p_payload_start += 8;
2012             p_pes->i_pes_size -= 8;
2013         }
2014
2015         p_pes->i_pts = AVI_GetPTS( p_stream );
2016
2017         /* read data */
2018         if( p_stream->i_samplesize )
2019         {
2020             if( p_stream->i_idxposb == 0 )
2021             {
2022                 i_size -= 8;
2023             }
2024             toread[i_stream].i_toread -= i_size;
2025             p_stream->i_idxposb += i_size;
2026             if( p_stream->i_idxposb >=
2027                     p_stream->p_index[p_stream->i_idxposc].i_length )
2028             {
2029                 p_stream->i_idxposb = 0;
2030                 p_stream->i_idxposc++;
2031             }
2032         }
2033         else
2034         {
2035             toread[i_stream].i_toread--;
2036             p_stream->i_idxposc++;
2037         }
2038
2039         if( p_stream->i_idxposc < p_stream->i_idxnb)
2040         {
2041             toread[i_stream].i_posf =
2042                 p_stream->p_index[p_stream->i_idxposc].i_pos;
2043             if( p_stream->i_idxposb > 0 )
2044             {
2045                 toread[i_stream].i_posf += 8 + p_stream->i_idxposb;
2046             }
2047
2048         }
2049         else
2050         {
2051             toread[i_stream].i_posf = -1;
2052         }
2053
2054         b_stream = VLC_TRUE; // at least one read succeed
2055
2056         if( p_stream->p_es && p_stream->p_es->p_decoder_fifo &&
2057             ( b_play_audio || p_stream->i_cat != AUDIO_ES ) )
2058         {
2059             p_pes->i_dts =
2060                 p_pes->i_pts =
2061                     input_ClockGetTS( p_input,
2062                                       p_input->stream.p_selected_program,
2063                                       p_pes->i_pts * 9/100);
2064
2065             input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
2066         }
2067         else
2068         {
2069             input_DeletePES( p_input->p_method_data, p_pes );
2070         }
2071     }
2072 }
2073
2074
2075 /*****************************************************************************
2076  * AVIDemux_UnSeekable: reads and demuxes data packets for unseekable file
2077  *****************************************************************************
2078  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
2079  *****************************************************************************/
2080 static int AVIDemux_UnSeekable( input_thread_t *p_input )
2081 {
2082     demux_sys_t     *p_avi = p_input->p_demux_data;
2083     avi_stream_t *p_stream_master;
2084     vlc_bool_t b_audio;
2085     unsigned int i_stream;
2086     unsigned int i_packet;
2087
2088     /* *** send audio data to decoder only if rate == DEFAULT_RATE *** */
2089     vlc_mutex_lock( &p_input->stream.stream_lock );
2090     b_audio = p_input->stream.control.i_rate == DEFAULT_RATE;
2091     vlc_mutex_unlock( &p_input->stream.stream_lock );
2092
2093     input_ClockManageRef( p_input,
2094                           p_input->stream.p_selected_program,
2095                           p_avi->i_pcr );
2096     /* *** find master stream for data packet skipping algo *** */
2097     /* *** -> first video, if any, or first audio ES *** */
2098     for( i_stream = 0, p_stream_master = NULL;
2099             i_stream < p_avi->i_streams; i_stream++ )
2100     {
2101 #define p_stream    p_avi->pp_info[i_stream]
2102         if( p_stream->p_es &&
2103             p_stream->p_es->p_decoder_fifo )
2104         {
2105             if( p_stream->i_cat == VIDEO_ES )
2106             {
2107                 p_stream_master = p_stream;
2108                 break;
2109             }
2110             if( p_stream->i_cat == AUDIO_ES && !p_stream_master )
2111             {
2112                 p_stream_master = p_stream;
2113             }
2114         }
2115 #undef p_stream
2116     }
2117     if( !p_stream_master )
2118     {
2119         msg_Warn( p_input, "no more stream selected" );
2120         return( 0 );
2121     }
2122
2123     p_avi->i_pcr = AVI_GetPTS( p_stream_master ) * 9 / 100;
2124
2125     for( i_packet = 0; i_packet < 10; i_packet++)
2126     {
2127 #define p_stream    p_avi->pp_info[avi_pk.i_stream]
2128
2129         avi_packet_t    avi_pk;
2130
2131         if( AVI_PacketGetHeader( p_input, &avi_pk ) )
2132         {
2133             return( 0 );
2134         }
2135 //        AVI_ParseStreamHeader( avi_pk.i_fourcc, &i_stream, &i_cat );
2136
2137         if( avi_pk.i_stream >= p_avi->i_streams ||
2138             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
2139         {
2140             /* we haven't found an audio or video packet:
2141              *  - we have seek, found first next packet
2142              *  - others packets could be found, skip them
2143              */
2144             switch( avi_pk.i_fourcc )
2145             {
2146                 case AVIFOURCC_JUNK:
2147                 case AVIFOURCC_LIST:
2148                     return( !AVI_PacketNext( p_input ) ? 1 : 0 );
2149                 case AVIFOURCC_idx1:
2150                     return( 0 );    // eof
2151                 default:
2152                     msg_Warn( p_input,
2153                               "seems to have lost position, resync" );
2154                     if( AVI_PacketSearch( p_input ) )
2155                     {
2156                         msg_Err( p_input, "resync failed" );
2157                         return( -1 );
2158                     }
2159             }
2160         }
2161         else
2162         {
2163             /* do will send this packet to decoder ? */
2164             if( ( !b_audio && avi_pk.i_cat == AUDIO_ES )||
2165                 !p_stream->p_es ||
2166                 !p_stream->p_es->p_decoder_fifo )
2167             {
2168                 if( AVI_PacketNext( p_input ) )
2169                 {
2170                     return( 0 );
2171                 }
2172             }
2173             else
2174             {
2175                 /* it's a selected stream, check for time */
2176                 if( __ABS( AVI_GetPTS( p_stream ) -
2177                             AVI_GetPTS( p_stream_master ) )< 600*1000 )
2178                 {
2179                     /* load it and send to decoder */
2180                     pes_packet_t    *p_pes;
2181                     if( AVI_PacketRead( p_input, &avi_pk, &p_pes ) || !p_pes)
2182                     {
2183                         return( -1 );
2184                     }
2185                     p_pes->i_dts =
2186                         p_pes->i_pts =
2187                             input_ClockGetTS( p_input,
2188                                           p_input->stream.p_selected_program,
2189                                           AVI_GetPTS( p_stream ) * 9/100);
2190                     input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
2191                 }
2192                 else
2193                 {
2194                     if( AVI_PacketNext( p_input ) )
2195                     {
2196                         return( 0 );
2197                     }
2198                 }
2199             }
2200
2201             /* *** update stream time position *** */
2202             if( p_stream->i_samplesize )
2203             {
2204                 p_stream->i_idxposb += avi_pk.i_size;
2205             }
2206             else
2207             {
2208                 p_stream->i_idxposc++;
2209             }
2210
2211         }
2212
2213 #undef p_stream
2214     }
2215
2216     return( 1 );
2217 }
2218