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) 2001-2004 the VideoLAN team
   5  * $Id$
   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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_plugin.h>
  33 #include <vlc_demux.h>
  34
  35 #include <vlc_interface.h>
  36
  37 #include <vlc_meta.h>
  38 #include <vlc_codecs.h>
  39 #include <vlc_charset.h>
  40
  41 #include "libavi.h"
  42
  43 /*****************************************************************************
  44  * Module descriptor
  45  *****************************************************************************/
  46
  47 #define INTERLEAVE_TEXT N_("Force interleaved method" )
  48 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method." )
  49
  50 #define INDEX_TEXT N_("Force index creation")
  51 #define INDEX_LONGTEXT N_( \
  52     "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
  53     "or incomplete (not seekable)." )
  54
  55 static int  Open ( vlc_object_t * );
  56 static void Close( vlc_object_t * );
  57
  58 static const int pi_index[] = {0,1,2};
  59
  60 static const char *const ppsz_indexes[] = { N_("Ask"), N_("Always fix"),
  61                                 N_("Never fix") };
  62
  63 vlc_module_begin ()
  64     set_shortname( "AVI" )
  65     set_description( N_("AVI demuxer") )
  66     set_capability( "demux", 212 )
  67     set_category( CAT_INPUT )
  68     set_subcategory( SUBCAT_INPUT_DEMUX )
  69
  70     add_bool( "avi-interleaved", 0, NULL,
  71               INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, true );
  72     add_integer( "avi-index", 0, NULL,
  73               INDEX_TEXT, INDEX_LONGTEXT, false );
  74         change_integer_list( pi_index, ppsz_indexes, NULL );
  75
  76     set_callbacks( Open, Close )
  77 vlc_module_end ()
  78
  79 /*****************************************************************************
  80  * Local prototypes
  81  *****************************************************************************/
  82 static int Control         ( demux_t *, int, va_list );
  83 static int Seek            ( demux_t *, mtime_t, int );
  84 static int Demux_Seekable  ( demux_t * );
  85 static int Demux_UnSeekable( demux_t * );
  86
  87 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
  88
  89 typedef struct
  90 {
  91     vlc_fourcc_t i_fourcc;
  92     off_t        i_pos;
  93     uint32_t     i_size;
  94     vlc_fourcc_t i_type;     /* only for AVIFOURCC_LIST */
  95
  96     uint8_t      i_peek[8];  /* first 8 bytes */
  97
  98     unsigned int i_stream;
  99     unsigned int i_cat;
 100 } avi_packet_t;
 101
 102
 103 typedef struct
 104 {
 105     vlc_fourcc_t i_id;
 106     uint32_t     i_flags;
 107     off_t        i_pos;
 108     uint32_t     i_length;
 109     uint32_t     i_lengthtotal;
 110
 111 } avi_entry_t;
 112
 113 typedef struct
 114 {
 115     bool      b_activated;
 116
 117     unsigned int    i_cat; /* AUDIO_ES, VIDEO_ES */
 118     vlc_fourcc_t    i_codec;
 119
 120     int             i_rate;
 121     int             i_scale;
 122     int             i_samplesize;
 123
 124     es_out_id_t     *p_es;
 125
 126     /* Avi Index */
 127     avi_entry_t     *p_index;
 128     unsigned int    i_idxnb;
 129     unsigned int    i_idxmax;
 130
 131     unsigned int    i_idxposc;  /* numero of chunk */
 132     unsigned int    i_idxposb;  /* byte in the current chunk */
 133
 134     /* extra information given to the decoder */
 135     void            *p_extra;
 136
 137     /* For VBR audio only */
 138     unsigned int    i_blockno;
 139     unsigned int    i_blocksize;
 140
 141     /* For muxed streams */
 142     stream_t        *p_out_muxed;
 143 } avi_track_t;
 144
 145 struct demux_sys_t
 146 {
 147     mtime_t i_time;
 148     mtime_t i_length;
 149
 150     bool  b_seekable;
 151     bool  b_muxed;
 152     avi_chunk_t ck_root;
 153
 154     bool  b_odml;
 155
 156     off_t   i_movi_begin;
 157     off_t   i_movi_lastchunk_pos;   /* XXX position of last valid chunk */
 158
 159     /* number of streams and information */
 160     unsigned int i_track;
 161     avi_track_t  **track;
 162
 163     /* meta */
 164     vlc_meta_t  *meta;
 165 };
 166
 167 static inline off_t __EVEN( off_t i )
 168 {
 169     return (i & 1) ? i + 1 : i;
 170 }
 171
 172 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
 173 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
 174 static mtime_t AVI_GetDPTS   ( avi_track_t *, int64_t i_count );
 175 static mtime_t AVI_GetPTS    ( avi_track_t * );
 176
 177
 178 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
 179 static int AVI_StreamChunkSet ( demux_t *,
 180                                 unsigned int i_stream, unsigned int i_ck );
 181 static int AVI_StreamBytesSet ( demux_t *,
 182                                 unsigned int i_stream, off_t   i_byte );
 183
 184 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
 185 static int   AVI_GetKeyFlag    ( vlc_fourcc_t , uint8_t * );
 186
 187 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
 188 static int AVI_PacketNext     ( demux_t * );
 189 static int AVI_PacketRead     ( demux_t *, avi_packet_t *, block_t **);
 190 static int AVI_PacketSearch   ( demux_t * );
 191
 192 static void AVI_IndexLoad    ( demux_t * );
 193 static void AVI_IndexCreate  ( demux_t * );
 194 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
 195
 196 static mtime_t  AVI_MovieGetLength( demux_t * );
 197
 198 /*****************************************************************************
 199  * Stream management
 200  *****************************************************************************/
 201 static int        AVI_TrackSeek  ( demux_t *, int, mtime_t );
 202 static int        AVI_TrackStopFinishedStreams( demux_t *);
 203
 204 /* Remarks:
 205  - For VBR mp3 stream:
 206     count blocks by rounded-up chunksizes instead of chunks
 207     we need full emulation of dshow avi demuxer bugs :(
 208     fixes silly nandub-style a-v delaying in avi with vbr mp3...
 209     (from mplayer 2002/08/02)
 210  - to complete....
 211  */
 212
 213 /*****************************************************************************
 214  * Open: check file and initializes AVI structures
 215  *****************************************************************************/
 216 static int Open( vlc_object_t * p_this )
 217 {
 218     demux_t  *p_demux = (demux_t *)p_this;
 219     demux_sys_t     *p_sys;
 220
 221     bool       b_index = false;
 222     int              i_do_index;
 223
 224     avi_chunk_t         ck_riff;
 225     avi_chunk_list_t    *p_riff = (avi_chunk_list_t*)&ck_riff;
 226     avi_chunk_list_t    *p_hdrl, *p_movi;
 227     avi_chunk_avih_t    *p_avih;
 228
 229     unsigned int i_track;
 230     unsigned int i, i_peeker;
 231
 232     const uint8_t *p_peek;
 233
 234     /* Is it an avi file ? */
 235     if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
 236
 237     for( i_peeker = 0; i_peeker < 188; i_peeker++ )
 238     {
 239         if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
 240             break;
 241         if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
 242             break;
 243         p_peek++;
 244     }
 245     if( i_peeker == 188 )
 246     {
 247         return VLC_EGENERIC;
 248     }
 249
 250     /* Initialize input  structures. */
 251     p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
 252     memset( p_sys, 0, sizeof( demux_sys_t ) );
 253     p_sys->i_time   = 0;
 254     p_sys->i_length = 0;
 255     p_sys->i_movi_lastchunk_pos = 0;
 256     p_sys->b_odml   = false;
 257     p_sys->b_muxed  = false;
 258     p_sys->i_track  = 0;
 259     p_sys->track    = NULL;
 260     p_sys->meta     = NULL;
 261
 262     stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
 263
 264     p_demux->pf_control = Control;
 265     p_demux->pf_demux = Demux_Seekable;
 266
 267     /* For unseekable stream, automaticaly use Demux_UnSeekable */
 268     if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
 269     {
 270         p_demux->pf_demux = Demux_UnSeekable;
 271     }
 272
 273     if( i_peeker > 0 )
 274     {
 275         stream_Read( p_demux->s, NULL, i_peeker );
 276     }
 277
 278     if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
 279     {
 280         msg_Err( p_demux, "avi module discarded (invalid file)" );
 281         return VLC_EGENERIC;
 282     }
 283
 284     if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
 285     {
 286         unsigned int i_count =
 287             AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
 288
 289         msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
 290         for( i = 1; i < i_count; i++ )
 291         {
 292             avi_chunk_list_t *p_sysx;
 293
 294             p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
 295             if( p_sysx->i_type == AVIFOURCC_AVIX )
 296             {
 297                 msg_Warn( p_demux, "detected OpenDML file" );
 298                 p_sys->b_odml = true;
 299                 break;
 300             }
 301         }
 302     }
 303
 304     p_riff  = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
 305     p_hdrl  = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
 306     p_movi  = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
 307
 308     if( !p_hdrl || !p_movi )
 309     {
 310         msg_Err( p_demux, "avi module discarded (invalid file)" );
 311         goto error;
 312     }
 313
 314     if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
 315     {
 316         msg_Err( p_demux, "cannot find avih chunk" );
 317         goto error;
 318     }
 319     i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
 320     if( p_avih->i_streams != i_track )
 321     {
 322         msg_Warn( p_demux,
 323                   "found %d stream but %d are declared",
 324                   i_track, p_avih->i_streams );
 325     }
 326     if( i_track == 0 )
 327     {
 328         msg_Err( p_demux, "no stream defined!" );
 329         goto error;
 330     }
 331
 332     /* print information on streams */
 333     msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
 334              i_track,
 335              p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 336              p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 337              p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 338              p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 339     if( ( p_sys->meta = vlc_meta_New() ) )
 340     {
 341         char buffer[200];
 342         sprintf( buffer, "%s%s%s%s",
 343                  p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 344                  p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 345                  p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 346                  p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 347         vlc_meta_SetSetting( p_sys->meta, buffer );
 348     }
 349
 350     /* now read info on each stream and create ES */
 351     for( i = 0 ; i < i_track; i++ )
 352     {
 353         avi_track_t           *tk     = malloc( sizeof( avi_track_t ) );
 354         if( !tk )
 355             goto error;
 356
 357         avi_chunk_list_t      *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
 358         avi_chunk_strh_t      *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
 359         avi_chunk_STRING_t    *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
 360         avi_chunk_strf_auds_t *p_auds = NULL;
 361         avi_chunk_strf_vids_t *p_vids = NULL;
 362         es_format_t fmt;
 363
 364         memset( tk, 0, sizeof( avi_track_t ) );
 365
 366         p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
 367         p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
 368
 369         if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
 370         {
 371             msg_Warn( p_demux, "stream[%d] incomplete", i );
 372             continue;
 373         }
 374
 375         tk->i_rate  = p_strh->i_rate;
 376         tk->i_scale = p_strh->i_scale;
 377         tk->i_samplesize = p_strh->i_samplesize;
 378         msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
 379                  i, tk->i_rate, tk->i_scale, tk->i_samplesize );
 380
 381         switch( p_strh->i_type )
 382         {
 383             case( AVIFOURCC_auds ):
 384                 tk->i_cat   = AUDIO_ES;
 385                 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
 386                                                   p_auds->p_wf->wFormatTag );
 387
 388                 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
 389                 if( tk->i_blocksize == 0 )
 390                 {
 391                     if( p_auds->p_wf->wFormatTag == 1 )
 392                         tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
 393                     else
 394                         tk->i_blocksize = 1;
 395                 }
 396                 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
 397                 {
 398                     msg_Warn( p_demux, "track[%d] samplesize=%d and blocksize=%d are not equal."
 399                                        "Using blocksize as a workaround.",
 400                                        i, tk->i_samplesize, tk->i_blocksize );
 401                     tk->i_samplesize = tk->i_blocksize;
 402                 }
 403
 404                 if( tk->i_codec == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
 405                 {
 406                     tk->i_blocksize = 0; /* fix vorbis VBR decoding */
 407                 }
 408
 409                 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
 410
 411                 fmt.audio.i_channels        = p_auds->p_wf->nChannels;
 412                 fmt.audio.i_rate            = p_auds->p_wf->nSamplesPerSec;
 413                 fmt.i_bitrate               = p_auds->p_wf->nAvgBytesPerSec*8;
 414                 fmt.audio.i_blockalign      = p_auds->p_wf->nBlockAlign;
 415                 fmt.audio.i_bitspersample   = p_auds->p_wf->wBitsPerSample;
 416                 fmt.b_packetized            = !tk->i_blocksize;
 417
 418                 msg_Dbg( p_demux,
 419                     "stream[%d] audio(0x%x) %d channels %dHz %dbits",
 420                     i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
 421                     p_auds->p_wf->nSamplesPerSec,
 422                     p_auds->p_wf->wBitsPerSample );
 423
 424                 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
 425                     p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
 426                 fmt.p_extra = tk->p_extra = malloc( fmt.i_extra );
 427                 if( !fmt.p_extra ) goto error;
 428                 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
 429
 430                 /* Rewrite the vorbis headers from Xiph-like format
 431                  * to VLC internal format
 432                  *
 433                  * Xiph format:
 434                  *  - 1st byte == N, is the number of packets - 1
 435                  *  - Following bytes are the size of the N first packets:
 436                  *      while( *p == 0xFF ) { size += 0xFF; p++ } size += *p;
 437                  *      (the size of the last packet is the size of remaining
 438                  *      data in the buffer)
 439                  *  - Finally, all the packets concatenated
 440                  *
 441                  * VLC format:
 442                  *  - Size of the packet on 16 bits (big endian) FIXME: should be 32 bits to be safe
 443                  *  - The packet itself
 444                  *  - Size of the next packet, and so on ...
 445                  */
 446
 447                 if( tk->i_codec == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
 448                 {
 449                     uint8_t *p_extra = fmt.p_extra;
 450                     size_t i_extra = fmt.i_extra;
 451
 452                     if( i_extra <= 1 ) break;
 453                     if( *p_extra++ != 2 ) break; /* 3 packets - 1 = 2 */
 454                     i_extra--;
 455
 456                     size_t i_identifier_len = 0;
 457                     while( *p_extra == 0xFF )
 458                     {
 459                         i_identifier_len += 0xFF;
 460                         p_extra++;
 461                         if( --i_extra <= 1 ) break;
 462                     }
 463                     i_identifier_len += *p_extra++;
 464                     if( i_identifier_len > --i_extra ) break;
 465
 466                     size_t i_comment_len = 0;
 467                     while( *p_extra == 0xFF )
 468                     {
 469                         i_comment_len += 0xFF;
 470                         p_extra++;
 471                         if( --i_extra <= 1 ) break;
 472                     }
 473                     i_comment_len += *p_extra++;
 474                     if( i_comment_len > --i_extra ) break;
 475                     size_t i_cookbook_len = i_extra;
 476
 477                     size_t i_headers_size = 3  * 2 + i_identifier_len +
 478                                             i_comment_len + i_cookbook_len;
 479                     uint8_t *p_out = malloc( i_headers_size );
 480                     if( !p_out ) goto error;
 481                     free( fmt.p_extra );
 482                     fmt.p_extra = tk->p_extra = p_out;
 483                     fmt.i_extra = i_headers_size;
 484                     #define copy_packet( len ) \
 485                         *p_out++ = len >> 8; \
 486                         *p_out++ = len & 0xFF; \
 487                         memcpy( p_out, p_extra, len ); \
 488                         p_out += len; \
 489                         p_extra += len;
 490                     copy_packet( i_identifier_len );
 491                     copy_packet( i_comment_len );
 492                     copy_packet( i_cookbook_len );
 493                     #undef copy_packet
 494                     break;
 495                 }
 496                 break;
 497
 498             case( AVIFOURCC_vids ):
 499                 tk->i_cat   = VIDEO_ES;
 500                 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
 501                                                   p_vids->p_bih->biCompression );
 502                 if( p_vids->p_bih->biCompression == 0x00 )
 503                 {
 504                     switch( p_vids->p_bih->biBitCount )
 505                     {
 506                         case 32:
 507                             tk->i_codec = VLC_FOURCC('R','V','3','2');
 508                             break;
 509                         case 24:
 510                             tk->i_codec = VLC_FOURCC('R','V','2','4');
 511                             break;
 512                         case 16:
 513                             /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
 514                             /* break;*/
 515                         case 15:
 516                             tk->i_codec = VLC_FOURCC('R','V','1','5');
 517                             break;
 518                         case 9:
 519                             tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
 520                             break;
 521                         case 8:
 522                             tk->i_codec = VLC_FOURCC('Y','8','0','0');
 523                             break;
 524                     }
 525                     es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
 526
 527                     if( p_vids->p_bih->biBitCount == 24 )
 528                     {
 529                         /* This is in BGR format */
 530                         fmt.video.i_bmask = 0x00ff0000;
 531                         fmt.video.i_gmask = 0x0000ff00;
 532                         fmt.video.i_rmask = 0x000000ff;
 533                     }
 534                 }
 535                 else
 536                 {
 537                     es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
 538                     if( tk->i_codec == FOURCC_mp4v &&
 539                         !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
 540                     {
 541                         fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 542                     }
 543                 }
 544                 tk->i_samplesize = 0;
 545                 fmt.video.i_width  = p_vids->p_bih->biWidth;
 546                 fmt.video.i_height = p_vids->p_bih->biHeight;
 547                 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
 548                 fmt.video.i_frame_rate = tk->i_rate;
 549                 fmt.video.i_frame_rate_base = tk->i_scale;
 550                 fmt.i_extra =
 551                     __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
 552                            p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
 553                 fmt.p_extra = &p_vids->p_bih[1];
 554                 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
 555                          i, (char*)&p_vids->p_bih->biCompression,
 556                          (uint32_t)p_vids->p_bih->biWidth,
 557                          (uint32_t)p_vids->p_bih->biHeight,
 558                          p_vids->p_bih->biBitCount,
 559                          (float)tk->i_rate/(float)tk->i_scale );
 560
 561                 if( p_vids->p_bih->biCompression == 0x00 )
 562                 {
 563                     /* RGB DIB are coded from bottom to top */
 564                     fmt.video.i_height =
 565                         (unsigned int)(-(int)p_vids->p_bih->biHeight);
 566                 }
 567
 568                 /* Extract palette from extradata if bpp <= 8
 569                  * (assumes that extradata contains only palette but appears
 570                  *  to be true for all palettized codecs we support) */
 571                 if( fmt.video.i_bits_per_pixel > 0 && fmt.video.i_bits_per_pixel <= 8 )
 572                 {
 573                     /* The palette is not always included in biSize */
 574                     fmt.i_extra = p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
 575                     if( fmt.i_extra > 0 )
 576                     {
 577                         const uint8_t *p_pal = fmt.p_extra;
 578
 579                         fmt.video.p_palette = calloc( sizeof(video_palette_t), 1 );
 580                         fmt.video.p_palette->i_entries = __MIN(fmt.i_extra/4, 256);
 581
 582                         for( int i = 0; i < fmt.video.p_palette->i_entries; i++ )
 583                         {
 584                             for( int j = 0; j < 4; j++ )
 585                                 fmt.video.p_palette->palette[i][j] = p_pal[4*i+j];
 586                         }
 587                     }
 588                 }
 589                 break;
 590
 591             case( AVIFOURCC_txts):
 592                 tk->i_cat   = SPU_ES;
 593                 tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
 594                 msg_Dbg( p_demux, "stream[%d] subtitles", i );
 595                 es_format_Init( &fmt, SPU_ES, tk->i_codec );
 596                 break;
 597
 598             case( AVIFOURCC_iavs):
 599             case( AVIFOURCC_ivas):
 600                 p_sys->b_muxed = true;
 601                 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
 602                 if( p_strh->i_handler == FOURCC_dvsd ||
 603                     p_strh->i_handler == FOURCC_dvhd ||
 604                     p_strh->i_handler == FOURCC_dvsl ||
 605                     p_strh->i_handler == FOURCC_dv25 ||
 606                     p_strh->i_handler == FOURCC_dv50 )
 607                 {
 608                     tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
 609                     if( !tk->p_out_muxed )
 610                         msg_Err( p_demux, "could not load the DV parser" );
 611                     else break;
 612                 }
 613                 free( tk );
 614                 continue;
 615
 616             case( AVIFOURCC_mids):
 617                 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
 618
 619             default:
 620                 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
 621                 free( tk );
 622                 continue;
 623         }
 624         if( p_strn )
 625         {
 626             /* The charset of p_strn is undefined */
 627             EnsureUTF8( p_strn->p_str );
 628             fmt.psz_description = strdup( p_strn->p_str );
 629         }
 630         if( tk->p_out_muxed == NULL )
 631             tk->p_es = es_out_Add( p_demux->out, &fmt );
 632         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 633     }
 634
 635     if( p_sys->i_track <= 0 )
 636     {
 637         msg_Err( p_demux, "no valid track" );
 638         goto error;
 639     }
 640
 641     i_do_index =  config_GetInt( p_demux, "avi-index" );
 642     if( i_do_index == 1 ) /* Always fix */
 643     {
 644 aviindex:
 645         if( p_sys->b_seekable )
 646         {
 647             AVI_IndexCreate( p_demux );
 648         }
 649         else
 650         {
 651             msg_Warn( p_demux, "cannot create index (unseekable stream)" );
 652             AVI_IndexLoad( p_demux );
 653         }
 654     }
 655     else
 656     {
 657         AVI_IndexLoad( p_demux );
 658     }
 659
 660     /* *** movie length in sec *** */
 661     p_sys->i_length = AVI_MovieGetLength( p_demux );
 662     if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
 663                           (mtime_t)p_avih->i_microsecperframe /
 664                           (mtime_t)1000000 )
 665     {
 666         msg_Warn( p_demux, "broken or missing index, 'seek' will be "
 667                            "approximative or will exhibit strange behavior" );
 668         if( i_do_index == 0 && !b_index )
 669         {
 670             if( !p_sys->b_seekable ) {
 671                 b_index = true;
 672                 goto aviindex;
 673             }
 674             int i_create;
 675             i_create = intf_UserYesNo( p_demux, _("AVI Index") ,
 676                         _( "This AVI file is broken. Seeking will not "
 677                         "work correctly.\nDo you want to "
 678                         "try to repair it?\n\nThis might take a long time." ),
 679                         _( "Repair" ), _( "Don't repair" ), _( "Cancel") );
 680             if( i_create == DIALOG_OK_YES )
 681             {
 682                 b_index = true;
 683                 msg_Dbg( p_demux, "Fixing AVI index" );
 684                 goto aviindex;
 685             }
 686             else if( i_create == DIALOG_CANCELLED )
 687             {
 688                 /* Kill input */
 689                 vlc_object_kill( p_demux->p_parent );
 690                 goto error;
 691             }
 692         }
 693     }
 694
 695     /* fix some BeOS MediaKit generated file */
 696     for( i = 0 ; i < p_sys->i_track; i++ )
 697     {
 698         avi_track_t         *tk = p_sys->track[i];
 699         avi_chunk_list_t    *p_strl;
 700         avi_chunk_strh_t    *p_strh;
 701         avi_chunk_strf_auds_t    *p_auds;
 702
 703         if( tk->i_cat != AUDIO_ES )
 704         {
 705             continue;
 706         }
 707         if( tk->i_idxnb < 1 ||
 708             tk->i_scale != 1 ||
 709             tk->i_samplesize != 0 )
 710         {
 711             continue;
 712         }
 713         p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
 714         p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
 715         p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
 716
 717         if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
 718             (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
 719         {
 720             int64_t i_track_length =
 721                 tk->p_index[tk->i_idxnb-1].i_length +
 722                 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
 723             mtime_t i_length = (mtime_t)p_avih->i_totalframes *
 724                                (mtime_t)p_avih->i_microsecperframe;
 725
 726             if( i_length == 0 )
 727             {
 728                 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
 729                 continue;
 730             }
 731             tk->i_samplesize = 1;
 732             tk->i_rate       = i_track_length  * (int64_t)1000000/ i_length;
 733             msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
 734         }
 735     }
 736
 737     if( p_sys->b_seekable )
 738     {
 739         /* we have read all chunk so go back to movi */
 740         stream_Seek( p_demux->s, p_movi->i_chunk_pos );
 741     }
 742     /* Skip movi header */
 743     stream_Read( p_demux->s, NULL, 12 );
 744
 745     p_sys->i_movi_begin = p_movi->i_chunk_pos;
 746     return VLC_SUCCESS;
 747
 748 error:
 749     if( p_sys->meta )
 750     {
 751         vlc_meta_Delete( p_sys->meta );
 752     }
 753     AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
 754     free( p_sys );
 755     return VLC_EGENERIC;
 756 }
 757
 758 /*****************************************************************************
 759  * Close: frees unused data
 760  *****************************************************************************/
 761 static void Close ( vlc_object_t * p_this )
 762 {
 763     demux_t *    p_demux = (demux_t *)p_this;
 764     unsigned int i;
 765     demux_sys_t *p_sys = p_demux->p_sys  ;
 766
 767     for( i = 0; i < p_sys->i_track; i++ )
 768     {
 769         if( p_sys->track[i] )
 770         {
 771             if( p_sys->track[i]->p_out_muxed )
 772                 stream_DemuxDelete( p_sys->track[i]->p_out_muxed );
 773             free( p_sys->track[i]->p_index );
 774             free( p_sys->track[i]->p_extra );
 775             free( p_sys->track[i] );
 776         }
 777     }
 778     free( p_sys->track );
 779     AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
 780     vlc_meta_Delete( p_sys->meta );
 781
 782     free( p_sys );
 783 }
 784
 785 /*****************************************************************************
 786  * Demux_Seekable: reads and demuxes data packets for stream seekable
 787  *****************************************************************************
 788  * AVIDemux: reads and demuxes data packets
 789  *****************************************************************************
 790  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
 791  *****************************************************************************/
 792 typedef struct
 793 {
 794     bool b_ok;
 795
 796     int i_toread;
 797
 798     off_t i_posf; /* where we will read :
 799                    if i_idxposb == 0 : begining of chunk (+8 to acces data)
 800                    else : point on data directly */
 801 } avi_track_toread_t;
 802
 803 static int Demux_Seekable( demux_t *p_demux )
 804 {
 805     demux_sys_t *p_sys = p_demux->p_sys;
 806
 807     unsigned int i_track_count = 0;
 808     unsigned int i_track;
 809     bool b_stream;
 810     /* cannot be more than 100 stream (dcXX or wbXX) */
 811     avi_track_toread_t toread[100];
 812
 813
 814     /* detect new selected/unselected streams */
 815     for( i_track = 0; i_track < p_sys->i_track; i_track++ )
 816     {
 817         avi_track_t *tk = p_sys->track[i_track];
 818         bool  b;
 819
 820         if( p_sys->b_muxed && tk->p_out_muxed )
 821         {
 822             i_track_count++;
 823             tk->b_activated = true;
 824             continue;
 825         }
 826
 827         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 828         if( b && !tk->b_activated )
 829         {
 830             if( p_sys->b_seekable)
 831             {
 832                 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
 833             }
 834             tk->b_activated = true;
 835         }
 836         else if( !b && tk->b_activated )
 837         {
 838             tk->b_activated = false;
 839         }
 840         if( b )
 841         {
 842             i_track_count++;
 843         }
 844     }
 845
 846     if( i_track_count <= 0 )
 847     {
 848         int64_t i_length = p_sys->i_length * (mtime_t)1000000;
 849
 850         p_sys->i_time += 25*1000;  /* read 25ms */
 851         if( i_length > 0 )
 852         {
 853             if( p_sys->i_time >= i_length )
 854                 return 0;
 855             return 1;
 856         }
 857         msg_Warn( p_demux, "no track selected, exiting..." );
 858         return 0;
 859     }
 860
 861     /* wait for the good time */
 862     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
 863     p_sys->i_time += 25*1000;  /* read 25ms */
 864
 865     /* init toread */
 866     for( i_track = 0; i_track < p_sys->i_track; i_track++ )
 867     {
 868         avi_track_t *tk = p_sys->track[i_track];
 869         mtime_t i_dpts;
 870
 871         toread[i_track].b_ok = tk->b_activated;
 872         if( tk->i_idxposc < tk->i_idxnb )
 873         {
 874             toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
 875            if( tk->i_idxposb > 0 )
 876            {
 877                 toread[i_track].i_posf += 8 + tk->i_idxposb;
 878            }
 879         }
 880         else
 881         {
 882             toread[i_track].i_posf = -1;
 883         }
 884
 885         i_dpts = p_sys->i_time - AVI_GetPTS( tk  );
 886
 887         if( tk->i_samplesize )
 888         {
 889             toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
 890         }
 891         else
 892         {
 893             toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
 894         }
 895
 896         if( i_dpts < 0 )
 897         {
 898             toread[i_track].i_toread *= -1;
 899         }
 900     }
 901
 902     b_stream = false;
 903
 904     for( ;; )
 905     {
 906         avi_track_t     *tk;
 907         bool       b_done;
 908         block_t         *p_frame;
 909         off_t i_pos;
 910         unsigned int i;
 911         size_t i_size;
 912
 913         /* search for first chunk to be read */
 914         for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
 915         {
 916             if( !toread[i].b_ok ||
 917                 AVI_GetDPTS( p_sys->track[i],
 918                              toread[i].i_toread ) <= -25 * 1000 )
 919             {
 920                 continue;
 921             }
 922
 923             if( toread[i].i_toread > 0 )
 924             {
 925                 b_done = false; /* not yet finished */
 926             }
 927             if( toread[i].i_posf > 0 )
 928             {
 929                 if( i_pos == -1 || i_pos > toread[i].i_posf )
 930                 {
 931                     i_track = i;
 932                     i_pos = toread[i].i_posf;
 933                 }
 934             }
 935         }
 936
 937         if( b_done )
 938         {
 939             for( i = 0; i < p_sys->i_track; i++ )
 940             {
 941                 if( toread[i].b_ok )
 942                     return 1;
 943             }
 944             msg_Warn( p_demux, "all tracks have failed, exiting..." );
 945             return 0;
 946         }
 947
 948         if( i_pos == -1 )
 949         {
 950             int i_loop_count = 0;
 951
 952             /* no valid index, we will parse directly the stream
 953              * in case we fail we will disable all finished stream */
 954             if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
 955             {
 956                 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
 957                 if( AVI_PacketNext( p_demux ) )
 958                 {
 959                     return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
 960                 }
 961             }
 962             else
 963             {
 964                 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
 965             }
 966
 967             for( ;; )
 968             {
 969                 avi_packet_t avi_pk;
 970
 971                 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
 972                 {
 973                     msg_Warn( p_demux,
 974                              "cannot get packet header, track disabled" );
 975                     return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
 976                 }
 977                 if( avi_pk.i_stream >= p_sys->i_track ||
 978                     ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
 979                 {
 980                     if( AVI_PacketNext( p_demux ) )
 981                     {
 982                         msg_Warn( p_demux,
 983                                   "cannot skip packet, track disabled" );
 984                         return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
 985                     }
 986
 987                     /* Prevents from eating all the CPU with broken files.
 988                      * This value should be low enough so that it doesn't
 989                      * affect the reading speed too much. */
 990                     if( !(++i_loop_count % 1024) )
 991                     {
 992                         if( !vlc_object_alive (p_demux) ) return -1;
 993                         msleep( 10000 );
 994
 995                         if( !(i_loop_count % (1024 * 10)) )
 996                             msg_Warn( p_demux,
 997                                       "don't seem to find any data..." );
 998                     }
 999                     continue;
1000                 }
1001                 else
1002                 {
1003                     /* add this chunk to the index */
1004                     avi_entry_t index;
1005
1006                     index.i_id = avi_pk.i_fourcc;
1007                     index.i_flags =
1008                        AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1009                                       avi_pk.i_peek);
1010                     index.i_pos = avi_pk.i_pos;
1011                     index.i_length = avi_pk.i_size;
1012                     AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1013
1014                     i_track = avi_pk.i_stream;
1015                     tk = p_sys->track[i_track];
1016                     /* do we will read this data ? */
1017                     if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1018                     {
1019                         break;
1020                     }
1021                     else
1022                     {
1023                         if( AVI_PacketNext( p_demux ) )
1024                         {
1025                             msg_Warn( p_demux,
1026                                       "cannot skip packet, track disabled" );
1027                             return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1028                         }
1029                     }
1030                 }
1031             }
1032
1033         }
1034         else
1035         {
1036             stream_Seek( p_demux->s, i_pos );
1037         }
1038
1039         /* Set the track to use */
1040         tk = p_sys->track[i_track];
1041
1042         /* read thoses data */
1043         if( tk->i_samplesize )
1044         {
1045             unsigned int i_toread;
1046
1047             if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1048             {
1049                 if( tk->i_samplesize > 1 )
1050                 {
1051                     i_toread = tk->i_samplesize;
1052                 }
1053                 else
1054                 {
1055                     i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1056                     i_toread = __MAX( i_toread, 100 );
1057                 }
1058             }
1059             i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
1060                                 tk->i_idxposb,
1061                             i_toread );
1062         }
1063         else
1064         {
1065             i_size = tk->p_index[tk->i_idxposc].i_length;
1066         }
1067
1068         if( tk->i_idxposb == 0 )
1069         {
1070             i_size += 8; /* need to read and skip header */
1071         }
1072
1073         if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1074         {
1075             msg_Warn( p_demux, "failed reading data" );
1076             tk->b_activated = false;
1077             toread[i_track].b_ok = false;
1078             continue;
1079         }
1080         if( i_size % 2 )    /* read was padded on word boundary */
1081         {
1082             p_frame->i_buffer--;
1083         }
1084         /* skip header */
1085         if( tk->i_idxposb == 0 )
1086         {
1087             p_frame->p_buffer += 8;
1088             p_frame->i_buffer -= 8;
1089         }
1090         p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1091         if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1092         {
1093             p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1094         }
1095         else
1096         {
1097             p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1098         }
1099
1100         /* read data */
1101         if( tk->i_samplesize )
1102         {
1103             if( tk->i_idxposb == 0 )
1104             {
1105                 i_size -= 8;
1106             }
1107             toread[i_track].i_toread -= i_size;
1108             tk->i_idxposb += i_size;
1109             if( tk->i_idxposb >=
1110                     tk->p_index[tk->i_idxposc].i_length )
1111             {
1112                 tk->i_idxposb = 0;
1113                 tk->i_idxposc++;
1114             }
1115         }
1116         else
1117         {
1118             int i_length = tk->p_index[tk->i_idxposc].i_length;
1119
1120             tk->i_idxposc++;
1121             if( tk->i_cat == AUDIO_ES )
1122             {
1123                 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1124             }
1125             toread[i_track].i_toread--;
1126         }
1127
1128         if( tk->i_idxposc < tk->i_idxnb)
1129         {
1130             toread[i_track].i_posf =
1131                 tk->p_index[tk->i_idxposc].i_pos;
1132             if( tk->i_idxposb > 0 )
1133             {
1134                 toread[i_track].i_posf += 8 + tk->i_idxposb;
1135             }
1136
1137         }
1138         else
1139         {
1140             toread[i_track].i_posf = -1;
1141         }
1142
1143         b_stream = true; /* at least one read succeed */
1144
1145         if( tk->i_cat != VIDEO_ES )
1146             p_frame->i_dts = p_frame->i_pts;
1147         else
1148         {
1149             p_frame->i_dts = p_frame->i_pts;
1150             p_frame->i_pts = 0;
1151         }
1152
1153         //p_pes->i_rate = p_demux->stream.control.i_rate;
1154         if( tk->p_out_muxed )
1155             stream_DemuxSend( tk->p_out_muxed, p_frame );
1156         else
1157             es_out_Send( p_demux->out, tk->p_es, p_frame );
1158     }
1159 }
1160
1161
1162 /*****************************************************************************
1163  * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1164  *****************************************************************************
1165  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1166  *****************************************************************************/
1167 static int Demux_UnSeekable( demux_t *p_demux )
1168 {
1169     demux_sys_t     *p_sys = p_demux->p_sys;
1170     avi_track_t *p_stream_master = NULL;
1171     unsigned int i_stream;
1172     unsigned int i_packet;
1173
1174     if( p_sys->b_muxed )
1175     {
1176         msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1177         return VLC_EGENERIC;
1178     }
1179
1180     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1181
1182     /* *** find master stream for data packet skipping algo *** */
1183     /* *** -> first video, if any, or first audio ES *** */
1184     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1185     {
1186         avi_track_t *tk = p_sys->track[i_stream];
1187         bool  b;
1188
1189         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1190
1191         if( b && tk->i_cat == VIDEO_ES )
1192         {
1193             p_stream_master = tk;
1194         }
1195         else if( b )
1196         {
1197             p_stream_master = tk;
1198         }
1199     }
1200
1201     if( !p_stream_master )
1202     {
1203         msg_Warn( p_demux, "no more stream selected" );
1204         return( 0 );
1205     }
1206
1207     p_sys->i_time = AVI_GetPTS( p_stream_master );
1208
1209     for( i_packet = 0; i_packet < 10; i_packet++)
1210     {
1211 #define p_stream    p_sys->track[avi_pk.i_stream]
1212
1213         avi_packet_t    avi_pk;
1214
1215         if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1216         {
1217             return( 0 );
1218         }
1219
1220         if( avi_pk.i_stream >= p_sys->i_track ||
1221             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1222         {
1223             /* we haven't found an audio or video packet:
1224              *  - we have seek, found first next packet
1225              *  - others packets could be found, skip them
1226              */
1227             switch( avi_pk.i_fourcc )
1228             {
1229                 case AVIFOURCC_JUNK:
1230                 case AVIFOURCC_LIST:
1231                 case AVIFOURCC_RIFF:
1232                     return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1233                 case AVIFOURCC_idx1:
1234                     if( p_sys->b_odml )
1235                     {
1236                         return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1237                     }
1238                     return( 0 );    /* eof */
1239                 default:
1240                     msg_Warn( p_demux,
1241                               "seems to have lost position, resync" );
1242                     if( AVI_PacketSearch( p_demux ) )
1243                     {
1244                         msg_Err( p_demux, "resync failed" );
1245                         return( -1 );
1246                     }
1247             }
1248         }
1249         else
1250         {
1251             /* check for time */
1252             if( __ABS( AVI_GetPTS( p_stream ) -
1253                         AVI_GetPTS( p_stream_master ) )< 600*1000 )
1254             {
1255                 /* load it and send to decoder */
1256                 block_t *p_frame;
1257                 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1258                 {
1259                     return( -1 );
1260                 }
1261                 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1262
1263                 if( avi_pk.i_cat != VIDEO_ES )
1264                     p_frame->i_dts = p_frame->i_pts;
1265                 else
1266                 {
1267                     p_frame->i_dts = p_frame->i_pts;
1268                     p_frame->i_pts = 0;
1269                 }
1270
1271                 //p_pes->i_rate = p_demux->stream.control.i_rate;
1272                 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1273             }
1274             else
1275             {
1276                 if( AVI_PacketNext( p_demux ) )
1277                 {
1278                     return( 0 );
1279                 }
1280             }
1281
1282             /* *** update stream time position *** */
1283             if( p_stream->i_samplesize )
1284             {
1285                 p_stream->i_idxposb += avi_pk.i_size;
1286             }
1287             else
1288             {
1289                 if( p_stream->i_cat == AUDIO_ES )
1290                 {
1291                     p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1292                 }
1293                 p_stream->i_idxposc++;
1294             }
1295
1296         }
1297 #undef p_stream
1298     }
1299
1300     return( 1 );
1301 }
1302
1303 /*****************************************************************************
1304  * Seek: goto to i_date or i_percent
1305  *****************************************************************************/
1306 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1307 {
1308
1309     demux_sys_t *p_sys = p_demux->p_sys;
1310     unsigned int i_stream;
1311     msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1312              i_date / 1000000, i_percent );
1313
1314     if( p_sys->b_seekable )
1315     {
1316         if( !p_sys->i_length )
1317         {
1318             avi_track_t *p_stream;
1319             int64_t i_pos;
1320
1321             /* use i_percent to create a true i_date */
1322             msg_Warn( p_demux, "seeking without index at %d%%"
1323                       " only works for interleaved files", i_percent );
1324             if( i_percent >= 100 )
1325             {
1326                 msg_Warn( p_demux, "cannot seek so far !" );
1327                 return VLC_EGENERIC;
1328             }
1329             i_percent = __MAX( i_percent, 0 );
1330
1331             /* try to find chunk that is at i_percent or the file */
1332             i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1333                            p_sys->i_movi_begin );
1334             /* search first selected stream */
1335             for( i_stream = 0, p_stream = NULL;
1336                         i_stream < p_sys->i_track; i_stream++ )
1337             {
1338                 p_stream = p_sys->track[i_stream];
1339                 if( p_stream->b_activated )
1340                 {
1341                     break;
1342                 }
1343             }
1344             if( !p_stream || !p_stream->b_activated )
1345             {
1346                 msg_Warn( p_demux, "cannot find any selected stream" );
1347                 return VLC_EGENERIC;
1348             }
1349
1350             /* be sure that the index exist */
1351             if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1352             {
1353                 msg_Warn( p_demux, "cannot seek" );
1354                 return VLC_EGENERIC;
1355             }
1356
1357             while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1358                p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1359             {
1360                 /* search after i_idxposc */
1361                 if( AVI_StreamChunkSet( p_demux,
1362                                         i_stream, p_stream->i_idxposc + 1 ) )
1363                 {
1364                     msg_Warn( p_demux, "cannot seek" );
1365                     return VLC_EGENERIC;
1366                 }
1367             }
1368
1369             i_date = AVI_GetPTS( p_stream );
1370             /* TODO better support for i_samplesize != 0 */
1371             msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1372         }
1373
1374         /* */
1375         for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1376         {
1377             avi_track_t *p_stream = p_sys->track[i_stream];
1378
1379             if( !p_stream->b_activated )
1380                 continue;
1381
1382             AVI_TrackSeek( p_demux, i_stream, i_date );
1383         }
1384         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1385         p_sys->i_time = i_date;
1386         msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1387         return VLC_SUCCESS;
1388     }
1389     else
1390     {
1391         msg_Err( p_demux, "shouldn't yet be executed" );
1392         return VLC_EGENERIC;
1393     }
1394 }
1395
1396 /*****************************************************************************
1397  * Control:
1398  *****************************************************************************/
1399 static double ControlGetPosition( demux_t *p_demux )
1400 {
1401     demux_sys_t *p_sys = p_demux->p_sys;
1402
1403     if( p_sys->i_length > 0 )
1404     {
1405         return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1406     }
1407     else if( stream_Size( p_demux->s ) > 0 )
1408     {
1409         unsigned int i;
1410         int64_t i_tmp;
1411         int64_t i64 = 0;
1412
1413         /* search the more advanced selected es */
1414         for( i = 0; i < p_sys->i_track; i++ )
1415         {
1416             avi_track_t *tk = p_sys->track[i];
1417             if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1418             {
1419                 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1420                         tk->p_index[tk->i_idxposc].i_length + 8;
1421                 if( i_tmp > i64 )
1422                 {
1423                     i64 = i_tmp;
1424                 }
1425             }
1426         }
1427         return (double)i64 / stream_Size( p_demux->s );
1428     }
1429     return 0.0;
1430 }
1431
1432 static int Control( demux_t *p_demux, int i_query, va_list args )
1433 {
1434     demux_sys_t *p_sys = p_demux->p_sys;
1435     int i;
1436     double   f, *pf;
1437     int64_t i64, *pi64;
1438     vlc_meta_t *p_meta;
1439
1440     switch( i_query )
1441     {
1442         case DEMUX_GET_POSITION:
1443             pf = (double*)va_arg( args, double * );
1444             *pf = ControlGetPosition( p_demux );
1445             return VLC_SUCCESS;
1446         case DEMUX_SET_POSITION:
1447             f = (double)va_arg( args, double );
1448             if( p_sys->b_seekable )
1449             {
1450                 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1451                 return Seek( p_demux, i64, (int)(f * 100) );
1452             }
1453             else
1454             {
1455                 int64_t i_pos = stream_Size( p_demux->s ) * f;
1456                 return stream_Seek( p_demux->s, i_pos );
1457             }
1458
1459         case DEMUX_GET_TIME:
1460             pi64 = (int64_t*)va_arg( args, int64_t * );
1461             *pi64 = p_sys->i_time;
1462             return VLC_SUCCESS;
1463
1464         case DEMUX_SET_TIME:
1465         {
1466             int i_percent = 0;
1467
1468             i64 = (int64_t)va_arg( args, int64_t );
1469             if( p_sys->i_length > 0 )
1470             {
1471                 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1472             }
1473             else if( p_sys->i_time > 0 )
1474             {
1475                 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1476                                    (double)i64 / (double)p_sys->i_time );
1477             }
1478             return Seek( p_demux, i64, i_percent );
1479         }
1480         case DEMUX_GET_LENGTH:
1481             pi64 = (int64_t*)va_arg( args, int64_t * );
1482             *pi64 = p_sys->i_length * (mtime_t)1000000;
1483             return VLC_SUCCESS;
1484
1485         case DEMUX_GET_FPS:
1486             pf = (double*)va_arg( args, double * );
1487             *pf = 0.0;
1488             for( i = 0; i < (int)p_sys->i_track; i++ )
1489             {
1490                 avi_track_t *tk = p_sys->track[i];
1491                 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1492                 {
1493                     *pf = (float)tk->i_rate / (float)tk->i_scale;
1494                     break;
1495                 }
1496             }
1497             return VLC_SUCCESS;
1498         case DEMUX_GET_META:
1499             p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1500             vlc_meta_Merge( p_meta,  p_sys->meta );
1501             return VLC_SUCCESS;
1502
1503         default:
1504             return VLC_EGENERIC;
1505     }
1506 }
1507
1508 /*****************************************************************************
1509  * Function to convert pts to chunk or byte
1510  *****************************************************************************/
1511
1512 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1513 {
1514     if( !tk->i_scale )
1515         return (mtime_t)0;
1516
1517     return (mtime_t)((int64_t)i_pts *
1518                      (int64_t)tk->i_rate /
1519                      (int64_t)tk->i_scale /
1520                      (int64_t)1000000 );
1521 }
1522 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1523 {
1524     if( !tk->i_scale || !tk->i_samplesize )
1525         return (mtime_t)0;
1526
1527     return (mtime_t)((int64_t)i_pts *
1528                      (int64_t)tk->i_rate /
1529                      (int64_t)tk->i_scale /
1530                      (int64_t)1000000 *
1531                      (int64_t)tk->i_samplesize );
1532 }
1533
1534 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1535 {
1536     mtime_t i_dpts = 0;
1537
1538     if( !tk->i_rate )
1539         return i_dpts;
1540
1541     i_dpts = (mtime_t)( (int64_t)1000000 *
1542                         (int64_t)i_count *
1543                         (int64_t)tk->i_scale /
1544                         (int64_t)tk->i_rate );
1545
1546     if( tk->i_samplesize )
1547     {
1548         return i_dpts / tk->i_samplesize;
1549     }
1550     return i_dpts;
1551 }
1552
1553 static mtime_t AVI_GetPTS( avi_track_t *tk )
1554 {
1555     if( tk->i_samplesize )
1556     {
1557         int64_t i_count = 0;
1558
1559         /* we need a valid entry we will emulate one */
1560         if( tk->i_idxposc == tk->i_idxnb )
1561         {
1562             if( tk->i_idxposc )
1563             {
1564                 /* use the last entry */
1565                 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1566                             + tk->p_index[tk->i_idxnb - 1].i_length;
1567             }
1568         }
1569         else
1570         {
1571             i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1572         }
1573         return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1574     }
1575     else
1576     {
1577         if( tk->i_cat == AUDIO_ES )
1578         {
1579             return AVI_GetDPTS( tk, tk->i_blockno );
1580         }
1581         else
1582         {
1583             return AVI_GetDPTS( tk, tk->i_idxposc );
1584         }
1585     }
1586 }
1587
1588 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1589 {
1590     demux_sys_t *p_sys = p_demux->p_sys;
1591     avi_packet_t avi_pk;
1592     int i_loop_count = 0;
1593
1594     /* find first chunk of i_stream that isn't in index */
1595
1596     if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1597     {
1598         stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1599         if( AVI_PacketNext( p_demux ) )
1600         {
1601             return VLC_EGENERIC;
1602         }
1603     }
1604     else
1605     {
1606         stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1607     }
1608
1609     for( ;; )
1610     {
1611         if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1612
1613         if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1614         {
1615             msg_Warn( p_demux, "cannot get packet header" );
1616             return VLC_EGENERIC;
1617         }
1618         if( avi_pk.i_stream >= p_sys->i_track ||
1619             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1620         {
1621             if( AVI_PacketNext( p_demux ) )
1622             {
1623                 return VLC_EGENERIC;
1624             }
1625
1626             /* Prevents from eating all the CPU with broken files.
1627              * This value should be low enough so that it doesn't
1628              * affect the reading speed too much. */
1629             if( !(++i_loop_count % 1024) )
1630             {
1631                 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1632                 msleep( 10000 );
1633
1634                 if( !(i_loop_count % (1024 * 10)) )
1635                     msg_Warn( p_demux, "don't seem to find any data..." );
1636             }
1637         }
1638         else
1639         {
1640             /* add this chunk to the index */
1641             avi_entry_t index;
1642
1643             index.i_id = avi_pk.i_fourcc;
1644             index.i_flags =
1645                AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1646                               avi_pk.i_peek);
1647             index.i_pos = avi_pk.i_pos;
1648             index.i_length = avi_pk.i_size;
1649             AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1650
1651             if( avi_pk.i_stream == i_stream  )
1652             {
1653                 return VLC_SUCCESS;
1654             }
1655
1656             if( AVI_PacketNext( p_demux ) )
1657             {
1658                 return VLC_EGENERIC;
1659             }
1660         }
1661     }
1662 }
1663
1664 /* be sure that i_ck will be a valid index entry */
1665 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1666                                unsigned int i_ck )
1667 {
1668     demux_sys_t *p_sys = p_demux->p_sys;
1669     avi_track_t *p_stream = p_sys->track[i_stream];
1670
1671     p_stream->i_idxposc = i_ck;
1672     p_stream->i_idxposb = 0;
1673
1674     if(  i_ck >= p_stream->i_idxnb )
1675     {
1676         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1677         do
1678         {
1679             p_stream->i_idxposc++;
1680             if( AVI_StreamChunkFind( p_demux, i_stream ) )
1681             {
1682                 return VLC_EGENERIC;
1683             }
1684
1685         } while( p_stream->i_idxposc < i_ck );
1686     }
1687
1688     return VLC_SUCCESS;
1689 }
1690
1691 /* XXX FIXME up to now, we assume that all chunk are one after one */
1692 static int AVI_StreamBytesSet( demux_t    *p_demux,
1693                                unsigned int i_stream,
1694                                off_t   i_byte )
1695 {
1696     demux_sys_t *p_sys = p_demux->p_sys;
1697     avi_track_t *p_stream = p_sys->track[i_stream];
1698
1699     if( ( p_stream->i_idxnb > 0 )
1700         &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1701                 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1702     {
1703         /* index is valid to find the ck */
1704         /* uses dichototmie to be fast enougth */
1705         int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1706         int i_idxmax  = p_stream->i_idxnb;
1707         int i_idxmin  = 0;
1708         for( ;; )
1709         {
1710             if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1711             {
1712                 i_idxmax  = i_idxposc ;
1713                 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1714             }
1715             else
1716             {
1717                 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1718                         p_stream->p_index[i_idxposc].i_length <= i_byte)
1719                 {
1720                     i_idxmin  = i_idxposc ;
1721                     i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1722                 }
1723                 else
1724                 {
1725                     p_stream->i_idxposc = i_idxposc;
1726                     p_stream->i_idxposb = i_byte -
1727                             p_stream->p_index[i_idxposc].i_lengthtotal;
1728                     return VLC_SUCCESS;
1729                 }
1730             }
1731         }
1732
1733     }
1734     else
1735     {
1736         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1737         p_stream->i_idxposb = 0;
1738         do
1739         {
1740             p_stream->i_idxposc++;
1741             if( AVI_StreamChunkFind( p_demux, i_stream ) )
1742             {
1743                 return VLC_EGENERIC;
1744             }
1745
1746         } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1747                     p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1748
1749         p_stream->i_idxposb = i_byte -
1750                        p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1751         return VLC_SUCCESS;
1752     }
1753 }
1754
1755 static int AVI_TrackSeek( demux_t *p_demux,
1756                            int i_stream,
1757                            mtime_t i_date )
1758 {
1759     demux_sys_t  *p_sys = p_demux->p_sys;
1760     avi_track_t  *tk = p_sys->track[i_stream];
1761
1762 #define p_stream    p_sys->track[i_stream]
1763     mtime_t i_oldpts;
1764
1765     i_oldpts = AVI_GetPTS( p_stream );
1766
1767     if( !p_stream->i_samplesize )
1768     {
1769         if( AVI_StreamChunkSet( p_demux,
1770                                 i_stream,
1771                                 AVI_PTSToChunk( p_stream, i_date ) ) )
1772         {
1773             return VLC_EGENERIC;
1774         }
1775
1776         if( p_stream->i_cat == AUDIO_ES )
1777         {
1778             unsigned int i;
1779             tk->i_blockno = 0;
1780             for( i = 0; i < tk->i_idxposc; i++ )
1781             {
1782                 if( tk->i_blocksize > 0 )
1783                 {
1784                     tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1785                 }
1786                 else
1787                 {
1788                     tk->i_blockno++;
1789                 }
1790             }
1791         }
1792
1793         msg_Dbg( p_demux,
1794                  "old:%"PRId64" %s new %"PRId64,
1795                  i_oldpts,
1796                  i_oldpts > i_date ? ">" : "<",
1797                  i_date );
1798
1799         if( p_stream->i_cat == VIDEO_ES )
1800         {
1801             /* search key frame */
1802             //if( i_date < i_oldpts || 1 )
1803             {
1804                 while( p_stream->i_idxposc > 0 &&
1805                    !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1806                                                                 AVIIF_KEYFRAME ) )
1807                 {
1808                     if( AVI_StreamChunkSet( p_demux,
1809                                             i_stream,
1810                                             p_stream->i_idxposc - 1 ) )
1811                     {
1812                         return VLC_EGENERIC;
1813                     }
1814                 }
1815             }
1816 #if 0
1817             else
1818             {
1819                 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1820                         !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1821                                                                 AVIIF_KEYFRAME ) )
1822                 {
1823                     if( AVI_StreamChunkSet( p_demux,
1824                                             i_stream,
1825                                             p_stream->i_idxposc + 1 ) )
1826                     {
1827                         return VLC_EGENERIC;
1828                     }
1829                 }
1830             }
1831 #endif
1832         }
1833     }
1834     else
1835     {
1836         if( AVI_StreamBytesSet( p_demux,
1837                                 i_stream,
1838                                 AVI_PTSToByte( p_stream, i_date ) ) )
1839         {
1840             return VLC_EGENERIC;
1841         }
1842     }
1843     return VLC_SUCCESS;
1844 #undef p_stream
1845 }
1846
1847 /****************************************************************************
1848  * Return true if it's a key frame
1849  ****************************************************************************/
1850 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1851 {
1852     switch( i_fourcc )
1853     {
1854         case FOURCC_DIV1:
1855             /* we have:
1856              *  startcode:      0x00000100   32bits
1857              *  framenumber     ?             5bits
1858              *  piture type     0(I),1(P)     2bits
1859              */
1860             if( GetDWBE( p_byte ) != 0x00000100 )
1861             {
1862                 /* it's not an msmpegv1 stream, strange...*/
1863                 return AVIIF_KEYFRAME;
1864             }
1865             return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1866
1867         case FOURCC_DIV2:
1868         case FOURCC_DIV3:   /* wmv1 also */
1869             /* we have
1870              *  picture type    0(I),1(P)     2bits
1871              */
1872             return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1873         case FOURCC_mp4v:
1874             /* we should find first occurrence of 0x000001b6 (32bits)
1875              *  startcode:      0x000001b6   32bits
1876              *  piture type     0(I),1(P)     2bits
1877              */
1878             if( GetDWBE( p_byte ) != 0x000001b6 )
1879             {
1880                 /* not true , need to find the first VOP header */
1881                 return AVIIF_KEYFRAME;
1882             }
1883             return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1884
1885         default:
1886             /* I can't do it, so say yes */
1887             return AVIIF_KEYFRAME;
1888     }
1889 }
1890
1891 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1892 {
1893     switch( i_cat )
1894     {
1895         case AUDIO_ES:
1896             wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1897             return i_codec;
1898
1899         case VIDEO_ES:
1900             /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1901             switch( i_codec )
1902             {
1903                 case FOURCC_1:
1904                     return VLC_FOURCC('m','r','l','e');
1905                 case FOURCC_DIV1:
1906                 case FOURCC_div1:
1907                 case FOURCC_MPG4:
1908                 case FOURCC_mpg4:
1909                     return FOURCC_DIV1;
1910                 case FOURCC_DIV2:
1911                 case FOURCC_div2:
1912                 case FOURCC_MP42:
1913                 case FOURCC_mp42:
1914                 case FOURCC_MPG3:
1915                 case FOURCC_mpg3:
1916                     return FOURCC_DIV2;
1917                 case FOURCC_div3:
1918                 case FOURCC_MP43:
1919                 case FOURCC_mp43:
1920                 case FOURCC_DIV3:
1921                 case FOURCC_DIV4:
1922                 case FOURCC_div4:
1923                 case FOURCC_DIV5:
1924                 case FOURCC_div5:
1925                 case FOURCC_DIV6:
1926                 case FOURCC_div6:
1927                 case FOURCC_AP41:
1928                 case FOURCC_3IV1:
1929                 case FOURCC_3iv1:
1930                 case FOURCC_3IVD:
1931                 case FOURCC_3ivd:
1932                 case FOURCC_3VID:
1933                 case FOURCC_3vid:
1934                     return FOURCC_DIV3;
1935                 case FOURCC_DIVX:
1936                 case FOURCC_divx:
1937                 case FOURCC_MP4S:
1938                 case FOURCC_mp4s:
1939                 case FOURCC_M4S2:
1940                 case FOURCC_m4s2:
1941                 case FOURCC_xvid:
1942                 case FOURCC_XVID:
1943                 case FOURCC_XviD:
1944                 case FOURCC_DX50:
1945                 case FOURCC_dx50:
1946                 case FOURCC_mp4v:
1947                 case FOURCC_4:
1948                 case FOURCC_3IV2:
1949                 case FOURCC_3iv2:
1950                     return FOURCC_mp4v;
1951             }
1952         default:
1953             return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1954     }
1955 }
1956
1957 /****************************************************************************
1958  *
1959  ****************************************************************************/
1960 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1961                                    unsigned int *pi_number, unsigned int *pi_type )
1962 {
1963 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1964     int c1, c2;
1965
1966     c1 = ((uint8_t *)&i_id)[0];
1967     c2 = ((uint8_t *)&i_id)[1];
1968
1969     if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1970     {
1971         SET_PTR( pi_number, 100 ); /* > max stream number */
1972         SET_PTR( pi_type, UNKNOWN_ES );
1973     }
1974     else
1975     {
1976         SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1977         switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1978         {
1979             case AVITWOCC_wb:
1980                 SET_PTR( pi_type, AUDIO_ES );
1981                 break;
1982             case AVITWOCC_dc:
1983             case AVITWOCC_db:
1984                 SET_PTR( pi_type, VIDEO_ES );
1985                 break;
1986             default:
1987                 SET_PTR( pi_type, UNKNOWN_ES );
1988                 break;
1989         }
1990     }
1991 #undef SET_PTR
1992 }
1993
1994 /****************************************************************************
1995  *
1996  ****************************************************************************/
1997 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1998 {
1999     const uint8_t *p_peek;
2000
2001     if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
2002     {
2003         return VLC_EGENERIC;
2004     }
2005     p_pk->i_fourcc  = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
2006     p_pk->i_size    = GetDWLE( p_peek + 4 );
2007     p_pk->i_pos     = stream_Tell( p_demux->s );
2008     if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
2009     {
2010         p_pk->i_type = VLC_FOURCC( p_peek[8],  p_peek[9],
2011                                    p_peek[10], p_peek[11] );
2012     }
2013     else
2014     {
2015         p_pk->i_type = 0;
2016     }
2017
2018     memcpy( p_pk->i_peek, p_peek + 8, 8 );
2019
2020     AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
2021     return VLC_SUCCESS;
2022 }
2023
2024 static int AVI_PacketNext( demux_t *p_demux )
2025 {
2026     avi_packet_t    avi_ck;
2027     int             i_skip = 0;
2028
2029     if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
2030     {
2031         return VLC_EGENERIC;
2032     }
2033
2034     if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2035         ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2036     {
2037         i_skip = 12;
2038     }
2039     else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2040              avi_ck.i_type == AVIFOURCC_AVIX )
2041     {
2042         i_skip = 24;
2043     }
2044     else
2045     {
2046         i_skip = __EVEN( avi_ck.i_size ) + 8;
2047     }
2048
2049     if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2050     {
2051         return VLC_EGENERIC;
2052     }
2053     return VLC_SUCCESS;
2054 }
2055
2056 static int AVI_PacketRead( demux_t   *p_demux,
2057                            avi_packet_t     *p_pk,
2058                            block_t          **pp_frame )
2059 {
2060     size_t i_size;
2061
2062     i_size = __EVEN( p_pk->i_size + 8 );
2063
2064     if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2065     {
2066         return VLC_EGENERIC;
2067     }
2068     (*pp_frame)->p_buffer += 8;
2069     (*pp_frame)->i_buffer -= 8;
2070
2071     if( i_size != p_pk->i_size + 8 )
2072     {
2073         (*pp_frame)->i_buffer--;
2074     }
2075
2076     return VLC_SUCCESS;
2077 }
2078
2079 static int AVI_PacketSearch( demux_t *p_demux )
2080 {
2081     demux_sys_t     *p_sys = p_demux->p_sys;
2082     avi_packet_t    avi_pk;
2083     int             i_count = 0;
2084
2085     for( ;; )
2086     {
2087         if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2088         {
2089             return VLC_EGENERIC;
2090         }
2091         AVI_PacketGetHeader( p_demux, &avi_pk );
2092         if( avi_pk.i_stream < p_sys->i_track &&
2093             ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2094         {
2095             return VLC_SUCCESS;
2096         }
2097         switch( avi_pk.i_fourcc )
2098         {
2099             case AVIFOURCC_JUNK:
2100             case AVIFOURCC_LIST:
2101             case AVIFOURCC_RIFF:
2102             case AVIFOURCC_idx1:
2103                 return VLC_SUCCESS;
2104         }
2105
2106         /* Prevents from eating all the CPU with broken files.
2107          * This value should be low enough so that it doesn't affect the
2108          * reading speed too much (not that we care much anyway because
2109          * this code is called only on broken files). */
2110         if( !(++i_count % 1024) )
2111         {
2112             if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2113
2114             msleep( 10000 );
2115             if( !(i_count % (1024 * 10)) )
2116                 msg_Warn( p_demux, "trying to resync..." );
2117         }
2118     }
2119 }
2120
2121 /****************************************************************************
2122  * Index stuff.
2123  ****************************************************************************/
2124 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
2125                                int i_stream,
2126                                avi_entry_t *p_index)
2127 {
2128     avi_track_t *tk = p_sys->track[i_stream];
2129
2130     /* Update i_movi_lastchunk_pos */
2131     if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2132     {
2133         p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2134     }
2135
2136     /* add the entry */
2137     if( tk->i_idxnb >= tk->i_idxmax )
2138     {
2139         tk->i_idxmax += 16384;
2140         tk->p_index = realloc( tk->p_index,
2141                                tk->i_idxmax * sizeof( avi_entry_t ) );
2142         if( tk->p_index == NULL )
2143         {
2144             return;
2145         }
2146     }
2147     /* calculate cumulate length */
2148     if( tk->i_idxnb > 0 )
2149     {
2150         p_index->i_lengthtotal =
2151             tk->p_index[tk->i_idxnb - 1].i_length +
2152                 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2153     }
2154     else
2155     {
2156         p_index->i_lengthtotal = 0;
2157     }
2158
2159     tk->p_index[tk->i_idxnb++] = *p_index;
2160 }
2161
2162 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2163 {
2164     demux_sys_t *p_sys = p_demux->p_sys;
2165
2166     avi_chunk_list_t    *p_riff;
2167     avi_chunk_list_t    *p_movi;
2168     avi_chunk_idx1_t    *p_idx1;
2169
2170     unsigned int i_stream;
2171     unsigned int i_index;
2172     off_t        i_offset;
2173     unsigned int i;
2174
2175     bool b_keyset[100];
2176
2177     p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2178     p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2179     p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2180
2181     if( !p_idx1 )
2182     {
2183         msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2184         return VLC_EGENERIC;
2185     }
2186
2187     /* *** calculate offset *** */
2188     /* Well, avi is __SHIT__ so test more than one entry
2189      * (needed for some avi files) */
2190     i_offset = 0;
2191     for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2192     {
2193         if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2194         {
2195             i_offset = p_movi->i_chunk_pos + 8;
2196             break;
2197         }
2198     }
2199
2200     /* Reset b_keyset */
2201     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2202         b_keyset[i_stream] = false;
2203
2204     for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2205     {
2206         unsigned int i_cat;
2207
2208         AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2209                                &i_stream,
2210                                &i_cat );
2211         if( i_stream < p_sys->i_track &&
2212             i_cat == p_sys->track[i_stream]->i_cat )
2213         {
2214             avi_entry_t index;
2215             index.i_id      = p_idx1->entry[i_index].i_fourcc;
2216             index.i_flags   =
2217                 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2218             index.i_pos     = p_idx1->entry[i_index].i_pos + i_offset;
2219             index.i_length  = p_idx1->entry[i_index].i_length;
2220             AVI_IndexAddEntry( p_sys, i_stream, &index );
2221
2222             if( index.i_flags&AVIIF_KEYFRAME )
2223                 b_keyset[i_stream] = true;
2224         }
2225     }
2226
2227     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2228     {
2229         if( !b_keyset[i_stream] )
2230         {
2231             avi_track_t *tk = p_sys->track[i_stream];
2232
2233             msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2234             for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2235                 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2236         }
2237     }
2238     return VLC_SUCCESS;
2239 }
2240
2241 static void __Parse_indx( demux_t    *p_demux,
2242                           int               i_stream,
2243                           avi_chunk_indx_t  *p_indx )
2244 {
2245     demux_sys_t         *p_sys    = p_demux->p_sys;
2246     avi_entry_t     index;
2247     int32_t             i;
2248
2249     msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2250     if( p_indx->i_indexsubtype == 0 )
2251     {
2252         for( i = 0; i < p_indx->i_entriesinuse; i++ )
2253         {
2254             index.i_id      = p_indx->i_id;
2255             index.i_flags   = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2256             index.i_pos     = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2257             index.i_length  = p_indx->idx.std[i].i_size&0x7fffffff;
2258
2259             AVI_IndexAddEntry( p_sys, i_stream, &index );
2260         }
2261     }
2262     else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2263     {
2264         for( i = 0; i < p_indx->i_entriesinuse; i++ )
2265         {
2266             index.i_id      = p_indx->i_id;
2267             index.i_flags   = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2268             index.i_pos     = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2269             index.i_length  = p_indx->idx.field[i].i_size;
2270
2271             AVI_IndexAddEntry( p_sys, i_stream, &index );
2272         }
2273     }
2274     else
2275     {
2276         msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2277     }
2278 }
2279
2280 static void AVI_IndexLoad_indx( demux_t *p_demux )
2281 {
2282     demux_sys_t         *p_sys = p_demux->p_sys;
2283     unsigned int        i_stream;
2284     int32_t             i;
2285
2286     avi_chunk_list_t    *p_riff;
2287     avi_chunk_list_t    *p_hdrl;
2288
2289     p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2290     p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2291
2292     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2293     {
2294         avi_chunk_list_t    *p_strl;
2295         avi_chunk_indx_t    *p_indx;
2296
2297 #define p_stream  p_sys->track[i_stream]
2298         p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2299         p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2300
2301         if( !p_indx )
2302         {
2303             msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2304                                "file?)" );
2305             continue;
2306         }
2307
2308         if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2309         {
2310             __Parse_indx( p_demux, i_stream, p_indx );
2311         }
2312         else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2313         {
2314             avi_chunk_t    ck_sub;
2315             for( i = 0; i < p_indx->i_entriesinuse; i++ )
2316             {
2317                 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2318                     AVI_ChunkRead( p_demux->s, &ck_sub, NULL  ) )
2319                 {
2320                     break;
2321                 }
2322                 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2323             }
2324         }
2325         else
2326         {
2327             msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2328         }
2329 #undef p_stream
2330     }
2331 }
2332
2333 static void AVI_IndexLoad( demux_t *p_demux )
2334 {
2335     demux_sys_t *p_sys = p_demux->p_sys;
2336     unsigned int i_stream;
2337
2338     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2339     {
2340         p_sys->track[i_stream]->i_idxnb  = 0;
2341         p_sys->track[i_stream]->i_idxmax = 0;
2342         p_sys->track[i_stream]->p_index  = NULL;
2343     }
2344
2345     if( p_sys->b_odml )
2346     {
2347         AVI_IndexLoad_indx( p_demux );
2348     }
2349     else  if( AVI_IndexLoad_idx1( p_demux ) )
2350     {
2351         /* try indx if idx1 failed as some "normal" file have indx too */
2352         AVI_IndexLoad_indx( p_demux );
2353     }
2354
2355     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2356     {
2357         msg_Dbg( p_demux, "stream[%d] created %d index entries",
2358                 i_stream, p_sys->track[i_stream]->i_idxnb );
2359     }
2360 }
2361
2362 static void AVI_IndexCreate( demux_t *p_demux )
2363 {
2364     demux_sys_t *p_sys = p_demux->p_sys;
2365
2366     avi_chunk_list_t *p_riff;
2367     avi_chunk_list_t *p_movi;
2368
2369     unsigned int i_stream;
2370     off_t i_movi_end;
2371
2372     mtime_t i_dialog_update;
2373     int     i_dialog_id;
2374
2375     p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2376     p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2377
2378     if( !p_movi )
2379     {
2380         msg_Err( p_demux, "cannot find p_movi" );
2381         return;
2382     }
2383
2384     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2385     {
2386         p_sys->track[i_stream]->i_idxnb  = 0;
2387         p_sys->track[i_stream]->i_idxmax = 0;
2388         p_sys->track[i_stream]->p_index  = NULL;
2389     }
2390     i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2391                         stream_Size( p_demux->s ) );
2392
2393     stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2394     msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2395
2396
2397     /* Only show dialog if AVI is > 10MB */
2398     i_dialog_id = -1;
2399     i_dialog_update = mdate();
2400     if( stream_Size( p_demux->s ) > 10000000 )
2401         i_dialog_id = intf_IntfProgress( p_demux, _("Fixing AVI Index..."), 0.0 );
2402
2403     for( ;; )
2404     {
2405         avi_packet_t pk;
2406
2407         if( !vlc_object_alive (p_demux) )
2408             break;
2409
2410         /* Don't update/check dialog too often */
2411         if( i_dialog_id > 0 && mdate() - i_dialog_update > 100000 )
2412         {
2413             if( intf_ProgressIsCancelled( p_demux, i_dialog_id ) )
2414                 break;
2415
2416             double f_pos = 100.0 * stream_Tell( p_demux->s ) /
2417                            stream_Size( p_demux->s );
2418             intf_ProgressUpdate( p_demux, i_dialog_id,
2419                                  _( "Fixing AVI Index..." ), f_pos, -1 );
2420
2421             i_dialog_update = mdate();
2422         }
2423
2424         if( AVI_PacketGetHeader( p_demux, &pk ) )
2425             break;
2426
2427         if( pk.i_stream < p_sys->i_track &&
2428             pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2429         {
2430             avi_entry_t index;
2431             index.i_id      = pk.i_fourcc;
2432             index.i_flags   =
2433                AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2434             index.i_pos     = pk.i_pos;
2435             index.i_length  = pk.i_size;
2436             AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2437         }
2438         else
2439         {
2440             switch( pk.i_fourcc )
2441             {
2442             case AVIFOURCC_idx1:
2443                 if( p_sys->b_odml )
2444                 {
2445                     avi_chunk_list_t *p_sysx;
2446                     p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2447                                             AVIFOURCC_RIFF, 1 );
2448
2449                     msg_Dbg( p_demux, "looking for new RIFF chunk" );
2450                     if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2451                         goto print_stat;
2452                     break;
2453                 }
2454                 goto print_stat;
2455
2456             case AVIFOURCC_RIFF:
2457                     msg_Dbg( p_demux, "new RIFF chunk found" );
2458                     break;
2459
2460             case AVIFOURCC_rec:
2461             case AVIFOURCC_JUNK:
2462                 break;
2463
2464             default:
2465                 msg_Warn( p_demux, "need resync, probably broken avi" );
2466                 if( AVI_PacketSearch( p_demux ) )
2467                 {
2468                     msg_Warn( p_demux, "lost sync, abord index creation" );
2469                     goto print_stat;
2470                 }
2471             }
2472         }
2473
2474         if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2475             AVI_PacketNext( p_demux ) )
2476         {
2477             break;
2478         }
2479     }
2480
2481 print_stat:
2482     if( i_dialog_id > 0 )
2483         intf_UserHide( p_demux, i_dialog_id );
2484
2485     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2486     {
2487         msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2488                 i_stream, p_sys->track[i_stream]->i_idxnb );
2489     }
2490 }
2491
2492 /*****************************************************************************
2493  * Stream management
2494  *****************************************************************************/
2495 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2496 {
2497     demux_sys_t *p_sys = p_demux->p_sys;
2498     unsigned int i;
2499     int b_end = true;
2500
2501     for( i = 0; i < p_sys->i_track; i++ )
2502     {
2503         avi_track_t *tk = p_sys->track[i];
2504         if( tk->i_idxposc >= tk->i_idxnb )
2505         {
2506             tk->b_activated = false;
2507             if( tk->p_es ) es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, false );
2508         }
2509         else
2510         {
2511             b_end = false;
2512         }
2513     }
2514     return( b_end );
2515 }
2516
2517 /****************************************************************************
2518  * AVI_MovieGetLength give max streams length in second
2519  ****************************************************************************/
2520 static mtime_t  AVI_MovieGetLength( demux_t *p_demux )
2521 {
2522     demux_sys_t  *p_sys = p_demux->p_sys;
2523     mtime_t      i_maxlength = 0;
2524     unsigned int i;
2525
2526     for( i = 0; i < p_sys->i_track; i++ )
2527     {
2528         avi_track_t *tk = p_sys->track[i];
2529         mtime_t i_length;
2530
2531         /* fix length for each stream */
2532         if( tk->i_idxnb < 1 || !tk->p_index )
2533         {
2534             continue;
2535         }
2536
2537         if( tk->i_samplesize )
2538         {
2539             i_length = AVI_GetDPTS( tk,
2540                                     tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2541                                         tk->p_index[tk->i_idxnb-1].i_length );
2542         }
2543         else
2544         {
2545             i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2546         }
2547         i_length /= (mtime_t)1000000;    /* in seconds */
2548
2549         msg_Dbg( p_demux,
2550                  "stream[%d] length:%"PRId64" (based on index)",
2551                  i,
2552                  i_length );
2553         i_maxlength = __MAX( i_maxlength, i_length );
2554     }
2555
2556     return i_maxlength;
2557 }