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 1.27 2003/01/20 13:01:53 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                             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             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( unsigned 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     size_t 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 ) != (ssize_t)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     unsigned int i_stream;
 473     unsigned 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         unsigned 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     unsigned 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( (off_t)(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 static int  AVI_StreamStopFinishedStreams( input_thread_t *, demux_sys_t * );
 626
 627 static vlc_bool_t AVI_StreamStart( input_thread_t *p_input,
 628                                    demux_sys_t *p_avi, int i_stream )
 629 {
 630 #define p_stream    p_avi->pp_info[i_stream]
 631     if( !p_stream->p_es )
 632     {
 633         msg_Warn( p_input, "stream[%d] unselectable", i_stream );
 634         return VLC_FALSE;
 635     }
 636     if( p_stream->b_activated )
 637     {
 638         msg_Warn( p_input, "stream[%d] already selected", i_stream );
 639         return VLC_TRUE;
 640     }
 641
 642     if( !p_stream->p_es->p_decoder_fifo )
 643     {
 644         vlc_mutex_lock( &p_input->stream.stream_lock );
 645         input_SelectES( p_input, p_stream->p_es );
 646         vlc_mutex_unlock( &p_input->stream.stream_lock );
 647     }
 648     p_stream->b_activated = p_stream->p_es->p_decoder_fifo ? VLC_TRUE
 649                                                            : VLC_FALSE;
 650     if( p_stream->b_activated && p_avi->b_seekable)
 651     {
 652         AVI_StreamSeek( p_input, p_avi, i_stream, p_avi->i_time );
 653     }
 654
 655     return p_stream->b_activated;
 656 #undef  p_stream
 657 }
 658
 659 static void    AVI_StreamStop( input_thread_t *p_input,
 660                                demux_sys_t *p_avi, int i_stream )
 661 {
 662 #define p_stream    p_avi->pp_info[i_stream]
 663
 664     if( !p_stream->b_activated )
 665     {
 666         msg_Warn( p_input, "stream[%d] already unselected", i_stream );
 667         return;
 668     }
 669
 670     if( p_stream->p_es->p_decoder_fifo )
 671     {
 672         vlc_mutex_lock( &p_input->stream.stream_lock );
 673         input_UnselectES( p_input, p_stream->p_es );
 674         vlc_mutex_unlock( &p_input->stream.stream_lock );
 675     }
 676
 677
 678     p_stream->b_activated = VLC_FALSE;
 679
 680 #undef  p_stream
 681 }
 682
 683 static int AVI_StreamStopFinishedStreams( input_thread_t *p_input,
 684                                            demux_sys_t *p_avi )
 685 {
 686     int i_stream;
 687     int b_end;
 688
 689     for( i_stream = 0,b_end = VLC_TRUE;
 690             i_stream < p_avi->i_streams; i_stream++ )
 691     {
 692 #define p_stream    p_avi->pp_info[i_stream]
 693         if( p_stream->i_idxposc >= p_stream->i_idxnb )
 694         {
 695             AVI_StreamStop( p_input, p_avi, i_stream );
 696         }
 697         else
 698         {
 699             b_end = VLC_FALSE;
 700         }
 701 #undef  p_stream
 702     }
 703     return( b_end );
 704 }
 705 /****************************************************************************
 706  * AVI_MovieGetLength give max streams length in second
 707  ****************************************************************************/
 708 static mtime_t  AVI_MovieGetLength( input_thread_t *p_input, demux_sys_t *p_avi )
 709 {
 710     unsigned int i_stream;
 711     mtime_t i_maxlength;
 712
 713     i_maxlength = 0;
 714     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
 715     {
 716 #define p_stream  p_avi->pp_info[i_stream]
 717         mtime_t i_length;
 718         /* fix length for each stream */
 719         if( p_stream->i_idxnb < 1 || !p_stream->p_index )
 720         {
 721             continue;
 722         }
 723
 724         if( p_stream->i_samplesize )
 725         {
 726             i_length =
 727                 (mtime_t)( p_stream->p_index[p_stream->i_idxnb-1].i_lengthtotal +
 728                            p_stream->p_index[p_stream->i_idxnb-1].i_length ) *
 729                 (mtime_t)p_stream->i_scale /
 730                 (mtime_t)p_stream->i_rate /
 731                 (mtime_t)p_stream->i_samplesize;
 732         }
 733         else
 734         {
 735             i_length = (mtime_t)p_stream->i_idxnb *
 736                        (mtime_t)p_stream->i_scale /
 737                        (mtime_t)p_stream->i_rate;
 738         }
 739
 740         msg_Dbg( p_input,
 741                  "stream[%d] length:"I64Fd" (based on index)",
 742                  i_stream,
 743                  i_length );
 744         i_maxlength = __MAX( i_maxlength, i_length );
 745 #undef p_stream
 746     }
 747
 748     return i_maxlength;
 749 }
 750
 751 /*****************************************************************************
 752  * AVIEnd: frees unused data
 753  *****************************************************************************/
 754 static void __AVIEnd ( vlc_object_t * p_this )
 755 {
 756     input_thread_t *    p_input = (input_thread_t *)p_this;
 757     unsigned int i;
 758     demux_sys_t *p_avi = p_input->p_demux_data  ;
 759
 760     if( p_avi->pp_info )
 761     {
 762         for( i = 0; i < p_avi->i_streams; i++ )
 763         {
 764             if( p_avi->pp_info[i] )
 765             {
 766                 if( p_avi->pp_info[i]->p_index )
 767                 {
 768                       free( p_avi->pp_info[i]->p_index );
 769                 }
 770                 free( p_avi->pp_info[i] );
 771             }
 772         }
 773          free( p_avi->pp_info );
 774     }
 775 #ifdef __AVI_SUBTITLE__
 776     if( p_avi->p_sub )
 777     {
 778         subtitle_Close( p_avi->p_sub );
 779         p_avi->p_sub = NULL;
 780     }
 781 #endif
 782     AVI_ChunkFreeRoot( p_input, &p_avi->ck_root );
 783 }
 784
 785 /*****************************************************************************
 786  * AVIInit: check file and initializes AVI structures
 787  *****************************************************************************/
 788 static int AVIInit( vlc_object_t * p_this )
 789 {
 790     input_thread_t *    p_input = (input_thread_t *)p_this;
 791     avi_chunk_t         ck_riff;
 792     avi_chunk_list_t    *p_riff = (avi_chunk_list_t*)&ck_riff;
 793     avi_chunk_list_t    *p_hdrl, *p_movi;
 794 #if 0
 795     avi_chunk_list_t    *p_INFO;
 796     avi_chunk_strz_t    *p_name;
 797 #endif
 798     avi_chunk_avih_t    *p_avih;
 799     demux_sys_t *p_avi;
 800     es_descriptor_t *p_es = NULL; /* avoid warning */
 801     unsigned int i;
 802 #ifdef __AVI_SUBTITLE__
 803     mtime_t i_microsecperframe = 0; // for some subtitle format
 804 #endif
 805
 806     vlc_bool_t b_stream_audio, b_stream_video;
 807
 808     p_input->pf_demux = AVIDemux_Seekable;
 809     if( AVI_TestFile( p_input ) )
 810     {
 811         msg_Warn( p_input, "avi module discarded (invalid headr)" );
 812         return VLC_EGENERIC;
 813     }
 814
 815     /* Initialize access plug-in structures. */
 816     if( p_input->i_mtu == 0 )
 817     {
 818         /* Improve speed. */
 819         p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
 820     }
 821
 822     if( !( p_input->p_demux_data =
 823                     p_avi = malloc( sizeof(demux_sys_t) ) ) )
 824     {
 825         msg_Err( p_input, "out of memory" );
 826         return VLC_ENOMEM;
 827     }
 828     memset( p_avi, 0, sizeof( demux_sys_t ) );
 829     p_avi->i_time = 0;
 830     p_avi->i_pcr  = 0;
 831     p_avi->b_seekable = ( ( p_input->stream.b_seekable )
 832                         &&( p_input->stream.i_method == INPUT_METHOD_FILE ) );
 833     p_avi->i_movi_lastchunk_pos = 0;
 834
 835     /* *** for unseekable stream, automaticaly use AVIDemux_interleaved *** */
 836     if( !p_avi->b_seekable || config_GetInt( p_input, "avi-interleaved" ) )
 837     {
 838         p_input->pf_demux = AVIDemux_UnSeekable;
 839     }
 840
 841     if( AVI_ChunkReadRoot( p_input, &p_avi->ck_root, p_avi->b_seekable ) )
 842     {
 843         msg_Err( p_input, "avi module discarded (invalid file)" );
 844         return VLC_EGENERIC;
 845     }
 846     AVI_ChunkDumpDebug( p_input, &p_avi->ck_root );
 847
 848
 849     p_riff  = (avi_chunk_list_t*)AVI_ChunkFind( &p_avi->ck_root,
 850                                                 AVIFOURCC_RIFF, 0 );
 851     p_hdrl  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 852                                                 AVIFOURCC_hdrl, 0 );
 853     p_movi  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 854                                                 AVIFOURCC_movi, 0 );
 855 #if 0
 856     p_INFO  = (avi_chunk_list_t*)AVI_ChunkFind( p_riff,
 857                                                 AVIFOURCC_INFO, 0 );
 858     p_name  = (avi_chunk_strz_t*)AVI_ChunkFind( p_INFO,
 859                                                 AVIFOURCC_INAM, 0 );
 860     if( p_name )
 861     {
 862
 863     }
 864 #endif
 865
 866     if( !p_hdrl || !p_movi )
 867     {
 868         msg_Err( p_input, "avi module discarded (invalid file)" );
 869         return VLC_EGENERIC;
 870     }
 871
 872     if( !( p_avih = (avi_chunk_avih_t*)AVI_ChunkFind( p_hdrl,
 873                                                       AVIFOURCC_avih, 0 ) ) )
 874     {
 875         msg_Err( p_input, "cannot find avih chunk" );
 876         return VLC_EGENERIC;
 877     }
 878     p_avi->i_streams = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
 879     if( p_avih->i_streams != p_avi->i_streams )
 880     {
 881         msg_Warn( p_input,
 882                   "found %d stream but %d are declared",
 883                   p_avi->i_streams,
 884                   p_avih->i_streams );
 885     }
 886     if( p_avi->i_streams == 0 )
 887     {
 888         AVIEnd( p_input );
 889         msg_Err( p_input, "no stream defined!" );
 890         return VLC_EGENERIC;
 891     }
 892
 893     /*  create one program */
 894     vlc_mutex_lock( &p_input->stream.stream_lock );
 895     if( input_InitStream( p_input, 0 ) == -1)
 896     {
 897         vlc_mutex_unlock( &p_input->stream.stream_lock );
 898         AVIEnd( p_input );
 899         msg_Err( p_input, "cannot init stream" );
 900         return VLC_EGENERIC;
 901     }
 902     if( input_AddProgram( p_input, 0, 0) == NULL )
 903     {
 904         vlc_mutex_unlock( &p_input->stream.stream_lock );
 905         AVIEnd( p_input );
 906         msg_Err( p_input, "cannot add program" );
 907         return VLC_EGENERIC;
 908     }
 909     p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 910     vlc_mutex_unlock( &p_input->stream.stream_lock );
 911
 912     /* print informations on streams */
 913     msg_Dbg( p_input, "AVIH: %d stream, flags %s%s%s%s ",
 914              p_avi->i_streams,
 915              p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 916              p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 917              p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 918              p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 919     {
 920         input_info_category_t *p_cat = input_InfoCategory( p_input, "Avi" );
 921         input_AddInfo( p_cat, "Number of streams", "%d", p_avi->i_streams );
 922         input_AddInfo( p_cat, "Flags", "%s%s%s%s",
 923                        p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 924                        p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 925                        p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 926                        p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 927     }
 928
 929     /* now read info on each stream and create ES */
 930     p_avi->pp_info = calloc( p_avi->i_streams,
 931                             sizeof( avi_stream_t* ) );
 932     memset( p_avi->pp_info,
 933             0,
 934             sizeof( avi_stream_t* ) * p_avi->i_streams );
 935
 936     for( i = 0 ; i < p_avi->i_streams; i++ )
 937     {
 938         avi_chunk_list_t    *p_avi_strl;
 939         avi_chunk_strh_t    *p_avi_strh;
 940         avi_chunk_strf_auds_t    *p_avi_strf_auds;
 941         avi_chunk_strf_vids_t    *p_avi_strf_vids;
 942         int     i_init_size;
 943         void    *p_init_data;
 944 #define p_info  p_avi->pp_info[i]
 945         p_info = malloc( sizeof(avi_stream_t ) );
 946         memset( p_info, 0, sizeof( avi_stream_t ) );
 947
 948         p_avi_strl = (avi_chunk_list_t*)AVI_ChunkFind( p_hdrl,
 949                                                        AVIFOURCC_strl, i );
 950         p_avi_strh = (avi_chunk_strh_t*)AVI_ChunkFind( p_avi_strl,
 951                                                        AVIFOURCC_strh, 0 );
 952         p_avi_strf_auds = (avi_chunk_strf_auds_t*)
 953             p_avi_strf_vids = (avi_chunk_strf_vids_t*)
 954                 AVI_ChunkFind( p_avi_strl, AVIFOURCC_strf, 0 );
 955
 956         if( !p_avi_strl || !p_avi_strh ||
 957                 ( !p_avi_strf_auds && !p_avi_strf_vids ) )
 958         {
 959             msg_Warn( p_input, "stream[%d] incomlete", i );
 960             continue;
 961         }
 962
 963         /* *** Init p_info *** */
 964         p_info->i_rate  = p_avi_strh->i_rate;
 965         p_info->i_scale = p_avi_strh->i_scale;
 966         p_info->i_samplesize = p_avi_strh->i_samplesize;
 967         msg_Dbg( p_input, "stream[%d] rate:%d scale:%d samplesize:%d",
 968                  i,
 969                  p_info->i_rate, p_info->i_scale, p_info->i_samplesize );
 970         switch( p_avi_strh->i_type )
 971         {
 972             case( AVIFOURCC_auds ):
 973                 p_info->i_cat = AUDIO_ES;
 974                 p_info->i_fourcc =
 975                     AVI_FourccGetCodec( AUDIO_ES,
 976                                         p_avi_strf_auds->p_wf->wFormatTag );
 977                 p_info->i_codec  = p_info->i_fourcc;
 978                 i_init_size = p_avi_strf_auds->i_chunk_size;
 979                 p_init_data = p_avi_strf_auds->p_wf;
 980                 msg_Dbg( p_input, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
 981                         i,
 982                         p_avi_strf_auds->p_wf->wFormatTag,
 983                         p_avi_strf_auds->p_wf->nChannels,
 984                         p_avi_strf_auds->p_wf->nSamplesPerSec,
 985                         p_avi_strf_auds->p_wf->wBitsPerSample );
 986                 {
 987                     char hepp[sizeof("Stream") + 10];
 988                     input_info_category_t *p_cat;
 989                     sprintf(hepp, "Stream %d", i);
 990                     p_cat = input_InfoCategory( p_input, hepp);
 991                     input_AddInfo( p_cat, "Type", "audio(0x%x)",
 992                                    p_avi_strf_auds->p_wf->wFormatTag );
 993                     input_AddInfo( p_cat, "Codec", "%4.4s",
 994                                    (const char*)&(p_info->i_codec) );
 995                     input_AddInfo( p_cat, "Channels", "%d",
 996                                    p_avi_strf_auds->p_wf->nChannels );
 997                     input_AddInfo( p_cat, "Samplerate", "%d",
 998                                    p_avi_strf_auds->p_wf->nSamplesPerSec );
 999                     input_AddInfo( p_cat, "Bits Per Sample", "%d",
1000                                    p_avi_strf_auds->p_wf->wBitsPerSample );
1001                 }
1002                 break;
1003
1004             case( AVIFOURCC_vids ):
1005                 p_info->i_cat = VIDEO_ES;
1006                 /* XXX quick hack for playing ffmpeg video, I don't know
1007                     who is doing something wrong */
1008                 p_info->i_samplesize = 0;
1009                 p_info->i_fourcc = p_avi_strf_vids->p_bih->biCompression;
1010                 p_info->i_codec =
1011                     AVI_FourccGetCodec( VIDEO_ES, p_info->i_fourcc );
1012                 i_init_size = p_avi_strf_vids->i_chunk_size;
1013                 p_init_data = p_avi_strf_vids->p_bih;
1014                 msg_Dbg( p_input, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
1015                         i,
1016                          (char*)&p_avi_strf_vids->p_bih->biCompression,
1017                          p_avi_strf_vids->p_bih->biWidth,
1018                          p_avi_strf_vids->p_bih->biHeight,
1019                          p_avi_strf_vids->p_bih->biBitCount,
1020                          (float)p_info->i_rate /
1021                              (float)p_info->i_scale );
1022                 {
1023                     char hepp[sizeof("Stream") + 10];
1024                     input_info_category_t *p_cat;
1025                     sprintf(hepp, "stream %d", i);
1026                     p_cat = input_InfoCategory( p_input, hepp);
1027                     input_AddInfo( p_cat, "Type", "video" );
1028                     input_AddInfo( p_cat, "Codec", "%4.4s",
1029                                    (const char*)&(p_info->i_codec) );
1030                     input_AddInfo( p_cat, "Resolution", "%dx%d",
1031                                    p_avi_strf_vids->p_bih->biWidth,
1032                                    p_avi_strf_vids->p_bih->biHeight );
1033                     input_AddInfo( p_cat, "Frame Rate", "%f",
1034                                    (float)p_info->i_rate /
1035                                        (float)p_info->i_scale );
1036                     input_AddInfo( p_cat, "Bits Per Pixel", "%d",
1037                                    p_avi_strf_vids->p_bih->biBitCount );
1038                 }
1039 #ifdef __AVI_SUBTITLE__
1040                 if( i_microsecperframe == 0 )
1041                 {
1042                     i_microsecperframe = (mtime_t)1000000 *
1043                                          (mtime_t)p_info->i_scale /
1044                                          (mtime_t)p_info->i_rate;
1045                 }
1046 #endif
1047                 break;
1048             default:
1049                 msg_Warn( p_input, "stream[%d] unknown type", i );
1050                 p_info->i_cat = UNKNOWN_ES;
1051                 i_init_size = 0;
1052                 p_init_data = NULL;
1053                 {
1054                     char psz_cat[32]; /* We'll clip i just in case */
1055                     input_info_category_t *p_cat;
1056                     sprintf( psz_cat, "stream %d", __MIN( i, 100000 ) );
1057                     p_cat = input_InfoCategory( p_input, psz_cat );
1058                     input_AddInfo( p_cat, "Type", "unknown" );
1059                 }
1060                 break;
1061         }
1062         p_info->b_activated = VLC_FALSE;
1063         /* add one ES */
1064         vlc_mutex_lock( &p_input->stream.stream_lock );
1065         p_info->p_es =
1066             p_es = input_AddES( p_input,
1067                                 p_input->stream.p_selected_program, 1+i,
1068                                 0 );
1069         vlc_mutex_unlock( &p_input->stream.stream_lock );
1070         p_es->i_stream_id =i; /* XXX: i don't use it */
1071         p_es->i_fourcc = p_info->i_fourcc;
1072         p_es->i_cat = p_info->i_cat;
1073         if( p_es->i_cat == AUDIO_ES )
1074         {
1075             p_es->p_waveformatex = malloc( i_init_size );
1076             memcpy( p_es->p_waveformatex, p_init_data, i_init_size );
1077         }
1078         else if( p_es->i_cat == VIDEO_ES )
1079         {
1080             p_es->p_bitmapinfoheader = malloc( i_init_size );
1081             memcpy( p_es->p_bitmapinfoheader, p_init_data, i_init_size );
1082         }
1083 #undef p_info
1084     }
1085
1086 #ifdef __AVI_SUBTITLE__
1087     if( ( p_avi->p_sub = subtitle_New( p_input, NULL, i_microsecperframe ) ) )
1088     {
1089         subtitle_Select( p_avi->p_sub );
1090     }
1091 #endif
1092
1093     if( config_GetInt( p_input, "avi-index" ) )
1094     {
1095         if( p_avi->b_seekable )
1096         {
1097             AVI_IndexCreate( p_input );
1098         }
1099         else
1100         {
1101             msg_Warn( p_input, "cannot create index (unseekable stream)" );
1102             AVI_IndexLoad( p_input );
1103         }
1104     }
1105     else
1106     {
1107         AVI_IndexLoad( p_input );
1108     }
1109
1110     /* *** movie length in sec *** */
1111     p_avi->i_length = AVI_MovieGetLength( p_input, p_avi );
1112     if( p_avi->i_length < (mtime_t)p_avih->i_totalframes *
1113                           (mtime_t)p_avih->i_microsecperframe /
1114                           (mtime_t)1000000 )
1115     {
1116         msg_Warn( p_input, "broken or missing index, 'seek' will be axproximative or will have strange behavour" );
1117     }
1118
1119     vlc_mutex_lock( &p_input->stream.stream_lock );
1120     if( p_avi->i_length )
1121     {
1122         p_input->stream.i_mux_rate =
1123             p_input->stream.p_selected_area->i_size / 50 / p_avi->i_length;
1124     }
1125     else
1126     {
1127         p_input->stream.i_mux_rate = 0;
1128     }
1129     vlc_mutex_unlock( &p_input->stream.stream_lock );
1130
1131     b_stream_audio = VLC_FALSE;
1132     b_stream_video = VLC_FALSE;
1133
1134     for( i = 0; i < p_avi->i_streams; i++ )
1135     {
1136 #define p_info  p_avi->pp_info[i]
1137         switch( p_info->p_es->i_cat )
1138         {
1139             case( VIDEO_ES ):
1140
1141                 if( !b_stream_video )
1142                 {
1143                     b_stream_video = AVI_StreamStart( p_input, p_avi, i );
1144                 }
1145                 break;
1146
1147             case( AUDIO_ES ):
1148                 if( !b_stream_audio )
1149                 {
1150                     b_stream_audio = AVI_StreamStart( p_input, p_avi, i );
1151                 }
1152                 break;
1153             default:
1154                 break;
1155         }
1156 #undef p_info
1157     }
1158
1159     if( !b_stream_video )
1160     {
1161         msg_Warn( p_input, "no video stream found" );
1162     }
1163     if( !b_stream_audio )
1164     {
1165         msg_Warn( p_input, "no audio stream found!" );
1166     }
1167
1168     vlc_mutex_lock( &p_input->stream.stream_lock );
1169     p_input->stream.p_selected_program->b_is_ok = 1;
1170     vlc_mutex_unlock( &p_input->stream.stream_lock );
1171
1172     if( p_avi->b_seekable )
1173     {
1174         AVI_ChunkGoto( p_input, p_movi );
1175     }
1176     else
1177     {
1178         // already at begining of p_movi
1179     }
1180     AVI_SkipBytes( p_input, 12 ); // enter in p_movi
1181
1182     p_avi->i_movi_begin = p_movi->i_chunk_pos;
1183     return VLC_SUCCESS;
1184 }
1185
1186
1187
1188
1189 /*****************************************************************************
1190  * Function to convert pts to chunk or byte
1191  *****************************************************************************/
1192
1193 static inline mtime_t AVI_PTSToChunk( avi_stream_t *p_info,
1194                                         mtime_t i_pts )
1195 {
1196     return (mtime_t)((int64_t)i_pts *
1197                      (int64_t)p_info->i_rate /
1198                      (int64_t)p_info->i_scale /
1199                      (int64_t)1000000 );
1200 }
1201 static inline mtime_t AVI_PTSToByte( avi_stream_t *p_info,
1202                                        mtime_t i_pts )
1203 {
1204     return (mtime_t)((int64_t)i_pts *
1205                      (int64_t)p_info->i_rate /
1206                      (int64_t)p_info->i_scale /
1207                      (int64_t)1000000 *
1208                      (int64_t)p_info->i_samplesize );
1209 }
1210
1211 static mtime_t AVI_GetDPTS( avi_stream_t *p_stream, int i_count )
1212 {
1213     if( p_stream->i_samplesize )
1214     {
1215         return (mtime_t)( (int64_t)1000000 *
1216                    (int64_t)i_count *
1217                    (int64_t)p_stream->i_scale /
1218                    (int64_t)p_stream->i_rate /
1219                    (int64_t)p_stream->i_samplesize );
1220     }
1221     else
1222     {
1223         return (mtime_t)( (int64_t)1000000 *
1224                    (int64_t)i_count *
1225                    (int64_t)p_stream->i_scale /
1226                    (int64_t)p_stream->i_rate);
1227     }
1228
1229 }
1230
1231 static mtime_t AVI_GetPTS( avi_stream_t *p_info )
1232 {
1233
1234     if( p_info->i_samplesize )
1235     {
1236         /* we need a valid entry we will emulate one */
1237         int64_t i_len;
1238         if( p_info->i_idxposc == p_info->i_idxnb )
1239         {
1240             if( p_info->i_idxposc )
1241             {
1242                 /* use the last entry */
1243                 i_len = p_info->p_index[p_info->i_idxnb - 1].i_lengthtotal
1244                             + p_info->p_index[p_info->i_idxnb - 1].i_length
1245                             + p_info->i_idxposb; /* should be 0 */
1246             }
1247             else
1248             {
1249                 i_len = p_info->i_idxposb;
1250                 /* no valid entry use only offset*/
1251             }
1252         }
1253         else
1254         {
1255             i_len = p_info->p_index[p_info->i_idxposc].i_lengthtotal
1256                                 + p_info->i_idxposb;
1257         }
1258         return (mtime_t)( (int64_t)1000000 *
1259                   (int64_t)i_len *
1260                    (int64_t)p_info->i_scale /
1261                    (int64_t)p_info->i_rate /
1262                    (int64_t)p_info->i_samplesize );
1263     }
1264     else
1265     {
1266         /* even if p_info->i_idxposc isn't valid, there isn't any problem */
1267         return (mtime_t)( (int64_t)1000000 *
1268                    (int64_t)(p_info->i_idxposc ) *
1269                    (int64_t)p_info->i_scale /
1270                    (int64_t)p_info->i_rate);
1271     }
1272 }
1273
1274 static int AVI_StreamChunkFind( input_thread_t *p_input,
1275                                 unsigned int i_stream )
1276 {
1277     demux_sys_t *p_avi = p_input->p_demux_data;
1278     avi_packet_t avi_pk;
1279
1280     /* find first chunk of i_stream that isn't in index */
1281
1282     if( p_avi->i_movi_lastchunk_pos >= p_avi->i_movi_begin )
1283     {
1284         AVI_SeekAbsolute( p_input, p_avi->i_movi_lastchunk_pos );
1285         if( AVI_PacketNext( p_input ) )
1286         {
1287             return VLC_EGENERIC;
1288         }
1289     }
1290     else
1291     {
1292         AVI_SeekAbsolute( p_input, p_avi->i_movi_begin );
1293     }
1294
1295     for( ;; )
1296     {
1297
1298         if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1299         {
1300             msg_Warn( p_input, "cannot get packet header" );
1301             return VLC_EGENERIC;
1302         }
1303         if( avi_pk.i_stream >= p_avi->i_streams ||
1304             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1305         {
1306             switch( avi_pk.i_fourcc )
1307             {
1308                 case AVIFOURCC_LIST:
1309                     AVI_SkipBytes( p_input, 12 );
1310                     break;
1311                 default:
1312                     if( AVI_PacketNext( p_input ) )
1313                     {
1314                         return VLC_EGENERIC;
1315                     }
1316                     break;
1317             }
1318         }
1319         else
1320         {
1321             /* add this chunk to the index */
1322             AVIIndexEntry_t index;
1323
1324             index.i_id = avi_pk.i_fourcc;
1325             index.i_flags =
1326                AVI_GetKeyFlag(p_avi->pp_info[avi_pk.i_stream]->i_codec,
1327                               avi_pk.i_peek);
1328             index.i_pos = avi_pk.i_pos;
1329             index.i_length = avi_pk.i_size;
1330             AVI_IndexAddEntry( p_avi, avi_pk.i_stream, &index );
1331
1332             if( avi_pk.i_stream == i_stream  )
1333             {
1334                 return VLC_SUCCESS;
1335             }
1336
1337             if( AVI_PacketNext( p_input ) )
1338             {
1339                 return VLC_EGENERIC;
1340             }
1341         }
1342     }
1343 }
1344
1345
1346 /* be sure that i_ck will be a valid index entry */
1347 static int AVI_SetStreamChunk( input_thread_t    *p_input,
1348                                unsigned int i_stream,
1349                                unsigned int i_ck )
1350 {
1351     demux_sys_t *p_avi = p_input->p_demux_data;
1352     avi_stream_t *p_stream = p_avi->pp_info[i_stream];
1353
1354     p_stream->i_idxposc = i_ck;
1355     p_stream->i_idxposb = 0;
1356
1357     if(  i_ck >= p_stream->i_idxnb )
1358     {
1359         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1360         do
1361         {
1362             p_stream->i_idxposc++;
1363             if( AVI_StreamChunkFind( p_input, i_stream ) )
1364             {
1365                 return VLC_EGENERIC;
1366             }
1367
1368         } while( p_stream->i_idxposc < i_ck );
1369     }
1370
1371     return VLC_SUCCESS;
1372 }
1373
1374
1375 /* XXX FIXME up to now, we assume that all chunk are one after one */
1376 static int AVI_SetStreamBytes( input_thread_t    *p_input,
1377                                unsigned int i_stream,
1378                                off_t   i_byte )
1379 {
1380     demux_sys_t *p_avi = p_input->p_demux_data;
1381     avi_stream_t *p_stream = p_avi->pp_info[i_stream];
1382
1383     if( ( p_stream->i_idxnb > 0 )
1384         &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1385                 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1386     {
1387         /* index is valid to find the ck */
1388         /* uses dichototmie to be fast enougth */
1389         int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1390         int i_idxmax  = p_stream->i_idxnb;
1391         int i_idxmin  = 0;
1392         for( ;; )
1393         {
1394             if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1395             {
1396                 i_idxmax  = i_idxposc ;
1397                 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1398             }
1399             else
1400             {
1401                 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1402                         p_stream->p_index[i_idxposc].i_length <= i_byte)
1403                 {
1404                     i_idxmin  = i_idxposc ;
1405                     i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1406                 }
1407                 else
1408                 {
1409                     p_stream->i_idxposc = i_idxposc;
1410                     p_stream->i_idxposb = i_byte -
1411                             p_stream->p_index[i_idxposc].i_lengthtotal;
1412                     return VLC_SUCCESS;
1413                 }
1414             }
1415         }
1416
1417     }
1418     else
1419     {
1420         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1421         p_stream->i_idxposb = 0;
1422         do
1423         {
1424             p_stream->i_idxposc++;
1425             if( AVI_StreamChunkFind( p_input, i_stream ) )
1426             {
1427                 return VLC_EGENERIC;
1428             }
1429
1430         } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1431                     p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1432
1433         p_stream->i_idxposb = i_byte -
1434                        p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1435         return VLC_SUCCESS;
1436     }
1437 }
1438
1439 static int AVI_StreamSeek( input_thread_t *p_input,
1440                            demux_sys_t  *p_avi,
1441                            int i_stream,
1442                            mtime_t i_date )
1443 {
1444 #define p_stream    p_avi->pp_info[i_stream]
1445     mtime_t i_oldpts;
1446
1447     i_oldpts = AVI_GetPTS( p_stream );
1448
1449     if( !p_stream->i_samplesize )
1450     {
1451         if( AVI_SetStreamChunk( p_input,
1452                                 i_stream,
1453                                 AVI_PTSToChunk( p_stream, i_date ) ) )
1454         {
1455             return VLC_EGENERIC;
1456         }
1457
1458         /* search key frame */
1459         msg_Dbg( p_input,
1460                  "old:"I64Fd" %s new "I64Fd,
1461                  i_oldpts,
1462                  i_oldpts > i_date ? ">" : "<",
1463                  i_date );
1464
1465         if( i_date < i_oldpts )
1466         {
1467             while( p_stream->i_idxposc > 0 &&
1468                !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1469                                                             AVIIF_KEYFRAME ) )
1470             {
1471                 if( AVI_SetStreamChunk( p_input,
1472                                         i_stream,
1473                                         p_stream->i_idxposc - 1 ) )
1474                 {
1475                     return VLC_EGENERIC;
1476                 }
1477             }
1478         }
1479         else
1480         {
1481             while( p_stream->i_idxposc < p_stream->i_idxnb &&
1482                     !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1483                                                             AVIIF_KEYFRAME ) )
1484             {
1485                 if( AVI_SetStreamChunk( p_input,
1486                                         i_stream,
1487                                         p_stream->i_idxposc + 1 ) )
1488                 {
1489                     return VLC_EGENERIC;
1490                 }
1491             }
1492         }
1493     }
1494     else
1495     {
1496         if( AVI_SetStreamBytes( p_input,
1497                                 i_stream,
1498                                 AVI_PTSToByte( p_stream, i_date ) ) )
1499         {
1500             return VLC_EGENERIC;
1501         }
1502     }
1503     return VLC_SUCCESS;
1504 #undef p_stream
1505 }
1506
1507 /*****************************************************************************
1508  * AVISeek: goto to i_date or i_percent
1509  *****************************************************************************
1510  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1511  *****************************************************************************/
1512 static int    AVISeek   ( input_thread_t *p_input,
1513                           mtime_t i_date, int i_percent )
1514 {
1515
1516     demux_sys_t *p_avi = p_input->p_demux_data;
1517     unsigned int i_stream;
1518     msg_Dbg( p_input,
1519              "seek requested: "I64Fd" secondes %d%%",
1520              i_date / 1000000,
1521              i_percent );
1522
1523     if( p_avi->b_seekable )
1524     {
1525         if( !p_avi->i_length )
1526         {
1527             avi_stream_t *p_stream;
1528             uint64_t i_pos;
1529
1530             /* use i_percent to create a true i_date */
1531             msg_Warn( p_input,
1532                       "mmh, seeking without index at %d%%"
1533                       " work only for interleaved file", i_percent );
1534
1535             if( i_percent >= 100 )
1536             {
1537                 msg_Warn( p_input, "cannot seek so far !" );
1538                 return( -1 );
1539             }
1540             i_percent = __MAX( i_percent, 0 );
1541
1542             /* try to find chunk that is at i_percent or the file */
1543             i_pos = __MAX( i_percent *
1544                            p_input->stream.p_selected_area->i_size / 100,
1545                            p_avi->i_movi_begin );
1546             /* search first selected stream */
1547             for( i_stream = 0, p_stream = NULL;
1548                         i_stream < p_avi->i_streams; i_stream++ )
1549             {
1550                 p_stream = p_avi->pp_info[i_stream];
1551                 if( p_stream->b_activated )
1552                 {
1553                     break;
1554                 }
1555             }
1556             if( !p_stream || !p_stream->b_activated )
1557             {
1558                 msg_Warn( p_input, "cannot find any selected stream" );
1559                 return( -1 );
1560             }
1561
1562             /* be sure that the index exit */
1563             if( AVI_SetStreamChunk( p_input,
1564                                     i_stream,
1565                                     0 ) )
1566             {
1567                 msg_Warn( p_input, "cannot seek" );
1568                 return( -1 );
1569             }
1570
1571             while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1572                p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1573             {
1574                 /* search after i_idxposc */
1575                 if( AVI_SetStreamChunk( p_input,
1576                                         i_stream, p_stream->i_idxposc + 1 ) )
1577                 {
1578                     msg_Warn( p_input, "cannot seek" );
1579                     return( -1 );
1580                 }
1581             }
1582             i_date = AVI_GetPTS( p_stream );
1583             /* TODO better support for i_samplesize != 0 */
1584             msg_Dbg( p_input, "estimate date "I64Fd, i_date );
1585         }
1586
1587 #define p_stream    p_avi->pp_info[i_stream]
1588         p_avi->i_time = 0;
1589         /* seek for chunk based streams */
1590         for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1591         {
1592             if( p_stream->b_activated && !p_stream->i_samplesize )
1593 //            if( p_stream->b_activated )
1594             {
1595                 AVI_StreamSeek( p_input, p_avi, i_stream, i_date );
1596                 p_avi->i_time = __MAX( AVI_GetPTS( p_stream ),
1597                                         p_avi->i_time );
1598             }
1599         }
1600 #if 1
1601         if( p_avi->i_time )
1602         {
1603             i_date = p_avi->i_time;
1604         }
1605         /* seek for bytes based streams */
1606         for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1607         {
1608             if( p_stream->b_activated && p_stream->i_samplesize )
1609             {
1610                 AVI_StreamSeek( p_input, p_avi, i_stream, i_date );
1611 //                p_avi->i_time = __MAX( AVI_GetPTS( p_stream ), p_avi->i_time );
1612             }
1613         }
1614         msg_Dbg( p_input, "seek: "I64Fd" secondes", p_avi->i_time /1000000 );
1615         /* set true movie time */
1616 #endif
1617         if( !p_avi->i_time )
1618         {
1619             p_avi->i_time = i_date;
1620         }
1621 #undef p_stream
1622         return( 1 );
1623     }
1624     else
1625     {
1626         msg_Err( p_input, "shouldn't yet be executed" );
1627         return( -1 );
1628     }
1629 }
1630
1631 #if 0
1632 static pes_packet_t *PES_split( input_thread_t *p_input, avi_stream_t *p_stream, pes_packet_t *p_pes )
1633 {
1634     pes_packet_t  *p_pes2;
1635     data_packet_t *p_data;
1636     int           i_nb_data;
1637
1638     if( p_pes->i_nb_data < 2 )
1639     {
1640         return( NULL );
1641     }
1642     p_pes2 = input_NewPES( p_input->p_method_data );
1643     p_pes2->i_pts = p_pes->i_pts;
1644     p_pes2->i_dts = p_pes->i_dts;
1645     p_pes2->i_nb_data = p_pes->i_nb_data/2;
1646     p_pes2->i_pes_size = 0;
1647     for( i_nb_data = 0, p_data = p_pes->p_first;
1648          i_nb_data < p_pes2->i_nb_data;
1649          i_nb_data++, p_data = p_data->p_next )
1650     {
1651         p_pes2->i_pes_size +=
1652             p_data->p_payload_end - p_data->p_payload_start;
1653         p_pes2->p_last = p_data;
1654     }
1655     p_pes2->p_first = p_pes->p_first;
1656     p_pes2->p_last->p_next = NULL;
1657
1658     p_pes->p_first = p_data;
1659     p_pes->i_pes_size -= p_pes2->i_pes_size;
1660     p_pes->i_nb_data -= p_pes2->i_nb_data;
1661 //    p_pes->i_pts += AVI_GetDPTS( p_stream, p_pes2->i_pes_size );
1662 //    p_pes->i_dts += AVI_GetDPTS( p_stream, p_pes2->i_pes_size );
1663     p_pes->i_pts = 0;
1664     p_pes->i_dts = 0;
1665     return( p_pes2 );
1666 }
1667 #endif
1668
1669 /*****************************************************************************
1670  * AVIDemux_Seekable: reads and demuxes data packets for stream seekable
1671  *****************************************************************************
1672  * AVIDemux: reads and demuxes data packets
1673  *****************************************************************************
1674  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1675  *****************************************************************************/
1676 typedef struct avi_stream_toread_s
1677 {
1678     vlc_bool_t b_ok;
1679
1680     int i_toread;
1681
1682     off_t i_posf; // where we will read :
1683                   // if i_idxposb == 0 : begining of chunk (+8 to acces data)
1684                   // else : point on data directly
1685 } avi_stream_toread_t;
1686
1687 static int AVIDemux_Seekable( input_thread_t *p_input )
1688 {
1689     unsigned int i_stream_count;
1690     unsigned int i_stream;
1691     vlc_bool_t b_stream;
1692
1693     // cannot be more than 100 stream (dcXX or wbXX)
1694     avi_stream_toread_t toread[100];
1695
1696     demux_sys_t *p_avi = p_input->p_demux_data;
1697
1698     /* detect new selected/unselected streams */
1699     for( i_stream = 0,i_stream_count= 0;
1700             i_stream < p_avi->i_streams; i_stream++ )
1701     {
1702 #define p_stream    p_avi->pp_info[i_stream]
1703         if( p_stream->p_es )
1704         {
1705             if( p_stream->p_es->p_decoder_fifo &&
1706                 !p_stream->b_activated )
1707             {
1708                 AVI_StreamStart( p_input, p_avi, i_stream );
1709             }
1710             else
1711             if( !p_stream->p_es->p_decoder_fifo &&
1712                 p_stream->b_activated )
1713             {
1714                 AVI_StreamStop( p_input, p_avi, i_stream );
1715             }
1716         }
1717         if( p_stream->b_activated )
1718         {
1719             i_stream_count++;
1720         }
1721 #undef  p_stream
1722     }
1723
1724     if( i_stream_count <= 0 )
1725     {
1726         msg_Warn( p_input, "no track selected, exiting..." );
1727         return( 0 );
1728     }
1729
1730     if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
1731     {
1732         mtime_t i_date;
1733         int i_percent;
1734         /* first wait for empty buffer, arbitrary time FIXME */
1735 //        msleep( DEFAULT_PTS_DELAY );
1736
1737         i_date = (mtime_t)1000000 *
1738                  (mtime_t)p_avi->i_length *
1739                  (mtime_t)AVI_TellAbsolute( p_input ) /
1740                  (mtime_t)p_input->stream.p_selected_area->i_size;
1741         i_percent = 100 * AVI_TellAbsolute( p_input ) /
1742                         p_input->stream.p_selected_area->i_size;
1743
1744 //        input_ClockInit( p_input->stream.p_selected_program );
1745         AVISeek( p_input, i_date, i_percent);
1746
1747 #ifdef __AVI_SUBTITLE__
1748         if( p_avi->p_sub )
1749         {
1750             subtitle_Seek( p_avi->p_sub, p_avi->i_time );
1751         }
1752 #endif
1753     }
1754
1755
1756     /* wait for the good time */
1757
1758     p_avi->i_pcr = p_avi->i_time * 9 / 100;
1759
1760     input_ClockManageRef( p_input,
1761                           p_input->stream.p_selected_program,
1762                           p_avi->i_pcr );
1763
1764
1765     p_avi->i_time += 25*1000;  /* read 25ms */
1766
1767 #ifdef __AVI_SUBTITLE__
1768     if( p_avi->p_sub )
1769     {
1770         subtitle_Demux( p_avi->p_sub, p_avi->i_time );
1771     }
1772 #endif
1773     /* init toread */
1774     for( i_stream = 0; i_stream < p_avi->i_streams; i_stream++ )
1775     {
1776 #define p_stream    p_avi->pp_info[i_stream]
1777         mtime_t i_dpts;
1778
1779         toread[i_stream].b_ok = p_stream->b_activated;
1780
1781         if( p_stream->i_idxposc < p_stream->i_idxnb )
1782         {
1783             toread[i_stream].i_posf =
1784                 p_stream->p_index[p_stream->i_idxposc].i_pos;
1785            if( p_stream->i_idxposb > 0 )
1786            {
1787                 toread[i_stream].i_posf += 8 + p_stream->i_idxposb;
1788            }
1789         }
1790         else
1791         {
1792             toread[i_stream].i_posf = -1;
1793         }
1794
1795         i_dpts = p_avi->i_time - AVI_GetPTS( p_stream  );
1796
1797         if( p_stream->i_samplesize )
1798         {
1799             toread[i_stream].i_toread = AVI_PTSToByte( p_stream,
1800                                                        __ABS( i_dpts ) );
1801         }
1802         else
1803         {
1804             toread[i_stream].i_toread = AVI_PTSToChunk( p_stream,
1805                                                         __ABS( i_dpts ) );
1806         }
1807
1808         if( i_dpts < 0 )
1809         {
1810             toread[i_stream].i_toread *= -1;
1811         }
1812 #undef  p_stream
1813     }
1814
1815     b_stream = VLC_FALSE;
1816
1817     for( ;; )
1818     {
1819 #define p_stream    p_avi->pp_info[i_stream]
1820         vlc_bool_t       b_done;
1821         pes_packet_t    *p_pes;
1822         off_t i_pos;
1823         unsigned int i;
1824         size_t i_size;
1825
1826         /* search for first chunk to be read */
1827         for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_avi->i_streams; i++ )
1828         {
1829             if( !toread[i].b_ok ||
1830                 AVI_GetDPTS( p_avi->pp_info[i],
1831                              toread[i].i_toread ) <= -25 * 1000 )
1832             {
1833                 continue;
1834             }
1835
1836             if( toread[i].i_toread > 0 )
1837             {
1838                 b_done = VLC_FALSE; // not yet finished
1839             }
1840
1841             if( toread[i].i_posf > 0 )
1842             {
1843                 if( i_pos == -1 || i_pos > toread[i_stream].i_posf )
1844                 {
1845                     i_stream = i;
1846                     i_pos = toread[i].i_posf;
1847                 }
1848             }
1849         }
1850
1851         if( b_done )
1852         {
1853 //            return( b_stream ? 1 : 0 );
1854             return( 1 );
1855         }
1856
1857         if( i_pos == -1 )
1858         {
1859             /* no valid index, we will parse directly the stream
1860              * in case we fail we will disable all finished stream */
1861             if( p_avi->i_movi_lastchunk_pos >= p_avi->i_movi_begin )
1862             {
1863                 AVI_SeekAbsolute( p_input, p_avi->i_movi_lastchunk_pos );
1864                 if( AVI_PacketNext( p_input ) )
1865                 {
1866                     return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1867                 }
1868             }
1869             else
1870             {
1871                 AVI_SeekAbsolute( p_input, p_avi->i_movi_begin );
1872             }
1873
1874             for( ;; )
1875             {
1876                 avi_packet_t avi_pk;
1877
1878                 if( AVI_PacketGetHeader( p_input, &avi_pk ) )
1879                 {
1880                     msg_Warn( p_input,
1881                              "cannot get packet header, track disabled" );
1882                     return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1883                 }
1884                 if( avi_pk.i_stream >= p_avi->i_streams ||
1885                     ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1886                 {
1887                     switch( avi_pk.i_fourcc )
1888                     {
1889                         case AVIFOURCC_LIST:
1890                             AVI_SkipBytes( p_input, 12 );
1891                             break;
1892                         default:
1893                             if( AVI_PacketNext( p_input ) )
1894                             {
1895                                 msg_Warn( p_input,
1896                                           "cannot skip packet, track disabled" );
1897                                 return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1898                             }
1899                             break;
1900                     }
1901                     continue;
1902                 }
1903                 else
1904                 {
1905                     /* add this chunk to the index */
1906                     AVIIndexEntry_t index;
1907
1908                     index.i_id = avi_pk.i_fourcc;
1909                     index.i_flags =
1910                        AVI_GetKeyFlag(p_avi->pp_info[avi_pk.i_stream]->i_codec,
1911                                       avi_pk.i_peek);
1912                     index.i_pos = avi_pk.i_pos;
1913                     index.i_length = avi_pk.i_size;
1914                     AVI_IndexAddEntry( p_avi, avi_pk.i_stream, &index );
1915
1916                     i_stream = avi_pk.i_stream;
1917                     /* do we will read this data ? */
1918                     if( AVI_GetDPTS( p_stream,
1919                              toread[i_stream].i_toread ) > -25 * 1000 )
1920                     {
1921                         break;
1922                     }
1923                     else
1924                     {
1925                         if( AVI_PacketNext( p_input ) )
1926                         {
1927                             msg_Warn( p_input,
1928                                       "cannot skip packet, track disabled" );
1929                             return( AVI_StreamStopFinishedStreams( p_input, p_avi ) ? 0 : 1 );
1930                         }
1931                     }
1932                 }
1933             }
1934
1935         }
1936         else
1937         {
1938             AVI_SeekAbsolute( p_input, i_pos );
1939         }
1940
1941         /* read thoses data */
1942         if( p_stream->i_samplesize )
1943         {
1944             int i_toread;
1945
1946             if( ( i_toread = toread[i_stream].i_toread ) <= 0 )
1947             {
1948                 if( p_stream->i_samplesize > 1 )
1949                 {
1950                     i_toread = p_stream->i_samplesize;
1951                 }
1952                 else
1953                 {
1954                     i_toread = __MAX( AVI_PTSToByte( p_stream, 20 * 1000 ), 100 );
1955                 }
1956             }
1957             i_size = __MIN( p_stream->p_index[p_stream->i_idxposc].i_length -
1958                                 p_stream->i_idxposb,
1959                             i_toread );
1960         }
1961         else
1962         {
1963             i_size = p_stream->p_index[p_stream->i_idxposc].i_length;
1964         }
1965
1966         if( p_stream->i_idxposb == 0 )
1967         {
1968             i_size += 8; // need to read and skip header
1969         }
1970
1971         if( input_ReadInPES( p_input, &p_pes, __EVEN( i_size ) ) < 0 )
1972         {
1973             msg_Warn( p_input, "failled reading data" );
1974             toread[i_stream].b_ok = VLC_FALSE;
1975             continue;
1976         }
1977
1978         if( i_size % 2 )    // read was padded on word boundary
1979         {
1980             p_pes->p_last->p_payload_end--;
1981             p_pes->i_pes_size--;
1982         }
1983         // skip header
1984         if( p_stream->i_idxposb == 0 )
1985         {
1986             p_pes->p_first->p_payload_start += 8;
1987             p_pes->i_pes_size -= 8;
1988         }
1989
1990         p_pes->i_pts = AVI_GetPTS( p_stream );
1991
1992         /* read data */
1993         if( p_stream->i_samplesize )
1994         {
1995             if( p_stream->i_idxposb == 0 )
1996             {
1997                 i_size -= 8;
1998             }
1999             toread[i_stream].i_toread -= i_size;
2000             p_stream->i_idxposb += i_size;
2001             if( p_stream->i_idxposb >=
2002                     p_stream->p_index[p_stream->i_idxposc].i_length )
2003             {
2004                 p_stream->i_idxposb = 0;
2005                 p_stream->i_idxposc++;
2006             }
2007         }
2008         else
2009         {
2010             toread[i_stream].i_toread--;
2011             p_stream->i_idxposc++;
2012         }
2013
2014         if( p_stream->i_idxposc < p_stream->i_idxnb)
2015         {
2016             toread[i_stream].i_posf =
2017                 p_stream->p_index[p_stream->i_idxposc].i_pos;
2018             if( p_stream->i_idxposb > 0 )
2019             {
2020                 toread[i_stream].i_posf += 8 + p_stream->i_idxposb;
2021             }
2022
2023         }
2024         else
2025         {
2026             toread[i_stream].i_posf = -1;
2027         }
2028
2029         b_stream = VLC_TRUE; // at least one read succeed
2030
2031         if( p_stream->p_es && p_stream->p_es->p_decoder_fifo )
2032         {
2033             p_pes->i_dts =
2034                 p_pes->i_pts =
2035                     input_ClockGetTS( p_input,
2036                                       p_input->stream.p_selected_program,
2037                                       p_pes->i_pts * 9/100);
2038
2039             input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
2040         }
2041         else
2042         {
2043             input_DeletePES( p_input->p_method_data, p_pes );
2044         }
2045     }
2046 }
2047
2048
2049 /*****************************************************************************
2050  * AVIDemux_UnSeekable: reads and demuxes data packets for unseekable file
2051  *****************************************************************************
2052  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
2053  *****************************************************************************/
2054 static int AVIDemux_UnSeekable( input_thread_t *p_input )
2055 {
2056     demux_sys_t     *p_avi = p_input->p_demux_data;
2057     avi_stream_t *p_stream_master;
2058     vlc_bool_t b_audio;
2059     unsigned int i_stream;
2060     unsigned int i_packet;
2061
2062     /* *** send audio data to decoder only if rate == DEFAULT_RATE *** */
2063     vlc_mutex_lock( &p_input->stream.stream_lock );
2064     b_audio = p_input->stream.control.i_rate == DEFAULT_RATE;
2065     vlc_mutex_unlock( &p_input->stream.stream_lock );
2066
2067     input_ClockManageRef( p_input,
2068                           p_input->stream.p_selected_program,
2069                           p_avi->i_pcr );
2070     /* *** find master stream for data packet skipping algo *** */
2071     /* *** -> first video, if any, or first audio ES *** */
2072     for( i_stream = 0, p_stream_master = NULL;
2073             i_stream < p_avi->i_streams; i_stream++ )
2074     {
2075 #define p_stream    p_avi->pp_info[i_stream]
2076         if( p_stream->p_es &&
2077             p_stream->p_es->p_decoder_fifo )
2078         {
2079             if( p_stream->i_cat == VIDEO_ES )
2080             {
2081                 p_stream_master = p_stream;
2082                 break;
2083             }
2084             if( p_stream->i_cat == AUDIO_ES && !p_stream_master )
2085             {
2086                 p_stream_master = p_stream;
2087             }
2088         }
2089 #undef p_stream
2090     }
2091     if( !p_stream_master )
2092     {
2093         msg_Warn( p_input, "no more stream selected" );
2094         return( 0 );
2095     }
2096
2097     p_avi->i_pcr = AVI_GetPTS( p_stream_master ) * 9 / 100;
2098
2099     for( i_packet = 0; i_packet < 10; i_packet++)
2100     {
2101 #define p_stream    p_avi->pp_info[avi_pk.i_stream]
2102
2103         avi_packet_t    avi_pk;
2104
2105         if( AVI_PacketGetHeader( p_input, &avi_pk ) )
2106         {
2107             return( 0 );
2108         }
2109 //        AVI_ParseStreamHeader( avi_pk.i_fourcc, &i_stream, &i_cat );
2110
2111         if( avi_pk.i_stream >= p_avi->i_streams ||
2112             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
2113         {
2114             /* we haven't found an audio or video packet:
2115              *  - we have seek, found first next packet
2116              *  - others packets could be found, skip them
2117              */
2118             switch( avi_pk.i_fourcc )
2119             {
2120                 case AVIFOURCC_JUNK:
2121                 case AVIFOURCC_LIST:
2122                     return( !AVI_PacketNext( p_input ) ? 1 : 0 );
2123                 case AVIFOURCC_idx1:
2124                     return( 0 );    // eof
2125                 default:
2126                     msg_Warn( p_input,
2127                               "seems to have lost position, resync" );
2128                     if( AVI_PacketSearch( p_input ) )
2129                     {
2130                         msg_Err( p_input, "resync failed" );
2131                         return( -1 );
2132                     }
2133             }
2134         }
2135         else
2136         {
2137             /* do will send this packet to decoder ? */
2138             if( ( !b_audio && avi_pk.i_cat == AUDIO_ES )||
2139                 !p_stream->p_es ||
2140                 !p_stream->p_es->p_decoder_fifo )
2141             {
2142                 if( AVI_PacketNext( p_input ) )
2143                 {
2144                     return( 0 );
2145                 }
2146             }
2147             else
2148             {
2149                 /* it's a selected stream, check for time */
2150                 if( __ABS( AVI_GetPTS( p_stream ) -
2151                             AVI_GetPTS( p_stream_master ) )< 600*1000 )
2152                 {
2153                     /* load it and send to decoder */
2154                     pes_packet_t    *p_pes;
2155                     if( AVI_PacketRead( p_input, &avi_pk, &p_pes ) || !p_pes)
2156                     {
2157                         return( -1 );
2158                     }
2159                     p_pes->i_dts =
2160                         p_pes->i_pts =
2161                             input_ClockGetTS( p_input,
2162                                           p_input->stream.p_selected_program,
2163                                           AVI_GetPTS( p_stream ) * 9/100);
2164                     input_DecodePES( p_stream->p_es->p_decoder_fifo, p_pes );
2165                 }
2166                 else
2167                 {
2168                     if( AVI_PacketNext( p_input ) )
2169                     {
2170                         return( 0 );
2171                     }
2172                 }
2173             }
2174
2175             /* *** update stream time position *** */
2176             if( p_stream->i_samplesize )
2177             {
2178                 p_stream->i_idxposb += avi_pk.i_size;
2179             }
2180             else
2181             {
2182                 p_stream->i_idxposc++;
2183             }
2184
2185         }
2186
2187 #undef p_stream
2188     }
2189
2190     return( 1 );
2191 }
2192