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) 2001-2009 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_dialog.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 for action"),
  61                                             N_("Always fix"),
  62                                             N_("Never fix") };
  63
  64 vlc_module_begin ()
  65     set_shortname( "AVI" )
  66     set_description( N_("AVI demuxer") )
  67     set_capability( "demux", 212 )
  68     set_category( CAT_INPUT )
  69     set_subcategory( SUBCAT_INPUT_DEMUX )
  70
  71     add_bool( "avi-interleaved", false, NULL,
  72               INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, true )
  73     add_integer( "avi-index", 0, NULL,
  74               INDEX_TEXT, INDEX_LONGTEXT, false )
  75         change_integer_list( pi_index, ppsz_indexes, NULL )
  76
  77     set_callbacks( Open, Close )
  78 vlc_module_end ()
  79
  80 /*****************************************************************************
  81  * Local prototypes
  82  *****************************************************************************/
  83 static int Control         ( demux_t *, int, va_list );
  84 static int Seek            ( demux_t *, mtime_t, int );
  85 static int Demux_Seekable  ( demux_t * );
  86 static int Demux_UnSeekable( demux_t * );
  87
  88 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
  89
  90 typedef struct
  91 {
  92     vlc_fourcc_t i_fourcc;
  93     off_t        i_pos;
  94     uint32_t     i_size;
  95     vlc_fourcc_t i_type;     /* only for AVIFOURCC_LIST */
  96
  97     uint8_t      i_peek[8];  /* first 8 bytes */
  98
  99     unsigned int i_stream;
 100     unsigned int i_cat;
 101 } avi_packet_t;
 102
 103
 104 typedef struct
 105 {
 106     vlc_fourcc_t i_id;
 107     uint32_t     i_flags;
 108     off_t        i_pos;
 109     uint32_t     i_length;
 110     int64_t      i_lengthtotal;
 111
 112 } avi_entry_t;
 113
 114 typedef struct
 115 {
 116     bool            b_activated;
 117     bool            b_eof;
 118
 119     unsigned int    i_cat; /* AUDIO_ES, VIDEO_ES */
 120     vlc_fourcc_t    i_codec;
 121
 122     int             i_rate;
 123     int             i_scale;
 124     unsigned int    i_samplesize;
 125
 126     es_out_id_t     *p_es;
 127
 128     /* Avi Index */
 129     avi_entry_t     *p_index;
 130     unsigned int    i_idxnb;
 131     unsigned int    i_idxmax;
 132
 133     unsigned int    i_idxposc;  /* numero of chunk */
 134     unsigned int    i_idxposb;  /* byte in the current chunk */
 135
 136     /* extra information given to the decoder */
 137     void            *p_extra;
 138
 139     /* For VBR audio only */
 140     unsigned int    i_blockno;
 141     unsigned int    i_blocksize;
 142
 143     /* For muxed streams */
 144     stream_t        *p_out_muxed;
 145 } avi_track_t;
 146
 147 struct demux_sys_t
 148 {
 149     mtime_t i_time;
 150     mtime_t i_length;
 151
 152     bool  b_seekable;
 153     bool  b_muxed;
 154     avi_chunk_t ck_root;
 155
 156     bool  b_odml;
 157
 158     off_t   i_movi_begin;
 159     off_t   i_movi_lastchunk_pos;   /* XXX position of last valid chunk */
 160
 161     /* number of streams and information */
 162     unsigned int i_track;
 163     avi_track_t  **track;
 164
 165     /* meta */
 166     vlc_meta_t  *meta;
 167 };
 168
 169 static inline off_t __EVEN( off_t i )
 170 {
 171     return (i & 1) ? i + 1 : i;
 172 }
 173
 174 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
 175 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
 176 static mtime_t AVI_GetDPTS   ( avi_track_t *, int64_t i_count );
 177 static mtime_t AVI_GetPTS    ( avi_track_t * );
 178
 179
 180 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
 181 static int AVI_StreamChunkSet ( demux_t *,
 182                                 unsigned int i_stream, unsigned int i_ck );
 183 static int AVI_StreamBytesSet ( demux_t *,
 184                                 unsigned int i_stream, off_t   i_byte );
 185
 186 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
 187 static int   AVI_GetKeyFlag    ( vlc_fourcc_t , uint8_t * );
 188
 189 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
 190 static int AVI_PacketNext     ( demux_t * );
 191 static int AVI_PacketRead     ( demux_t *, avi_packet_t *, block_t **);
 192 static int AVI_PacketSearch   ( demux_t * );
 193
 194 static void AVI_IndexLoad    ( demux_t * );
 195 static void AVI_IndexCreate  ( demux_t * );
 196 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
 197
 198 static mtime_t  AVI_MovieGetLength( demux_t * );
 199
 200 /*****************************************************************************
 201  * Stream management
 202  *****************************************************************************/
 203 static int        AVI_TrackSeek  ( demux_t *, int, mtime_t );
 204 static int        AVI_TrackStopFinishedStreams( demux_t *);
 205
 206 /* Remarks:
 207  - For VBR mp3 stream:
 208     count blocks by rounded-up chunksizes instead of chunks
 209     we need full emulation of dshow avi demuxer bugs :(
 210     fixes silly nandub-style a-v delaying in avi with vbr mp3...
 211     (from mplayer 2002/08/02)
 212  - to complete....
 213  */
 214
 215 /*****************************************************************************
 216  * Open: check file and initializes AVI structures
 217  *****************************************************************************/
 218 static int Open( vlc_object_t * p_this )
 219 {
 220     demux_t  *p_demux = (demux_t *)p_this;
 221     demux_sys_t     *p_sys;
 222
 223     bool       b_index = false;
 224     int              i_do_index;
 225
 226     avi_chunk_list_t    *p_riff;
 227     avi_chunk_list_t    *p_hdrl, *p_movi;
 228     avi_chunk_avih_t    *p_avih;
 229
 230     unsigned int i_track;
 231     unsigned int i, i_peeker;
 232
 233     const uint8_t *p_peek;
 234
 235     /* Is it an avi file ? */
 236     if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
 237
 238     for( i_peeker = 0; i_peeker < 188; i_peeker++ )
 239     {
 240         if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
 241             break;
 242         if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
 243             break;
 244         p_peek++;
 245     }
 246     if( i_peeker == 188 )
 247     {
 248         return VLC_EGENERIC;
 249     }
 250
 251     /* Initialize input  structures. */
 252     p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
 253     memset( p_sys, 0, sizeof( demux_sys_t ) );
 254     p_sys->i_time   = 0;
 255     p_sys->i_length = 0;
 256     p_sys->i_movi_lastchunk_pos = 0;
 257     p_sys->b_odml   = false;
 258     p_sys->b_muxed  = false;
 259     p_sys->i_track  = 0;
 260     p_sys->track    = NULL;
 261     p_sys->meta     = NULL;
 262
 263     stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
 264
 265     p_demux->pf_control = Control;
 266     p_demux->pf_demux = Demux_Seekable;
 267
 268     /* For unseekable stream, automaticaly use Demux_UnSeekable */
 269     if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
 270     {
 271         p_demux->pf_demux = Demux_UnSeekable;
 272     }
 273
 274     if( i_peeker > 0 )
 275     {
 276         stream_Read( p_demux->s, NULL, i_peeker );
 277     }
 278
 279     if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
 280     {
 281         msg_Err( p_demux, "avi module discarded (invalid file)" );
 282         return VLC_EGENERIC;
 283     }
 284
 285     if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
 286     {
 287         unsigned int i_count =
 288             AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
 289
 290         msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
 291         for( i = 1; i < i_count; i++ )
 292         {
 293             avi_chunk_list_t *p_sysx;
 294
 295             p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
 296             if( p_sysx->i_type == AVIFOURCC_AVIX )
 297             {
 298                 msg_Warn( p_demux, "detected OpenDML file" );
 299                 p_sys->b_odml = true;
 300                 break;
 301             }
 302         }
 303     }
 304
 305     p_riff  = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
 306     p_hdrl  = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
 307     p_movi  = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
 308
 309     if( !p_hdrl || !p_movi )
 310     {
 311         msg_Err( p_demux, "avi module discarded (invalid file)" );
 312         goto error;
 313     }
 314
 315     if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
 316     {
 317         msg_Err( p_demux, "cannot find avih chunk" );
 318         goto error;
 319     }
 320     i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
 321     if( p_avih->i_streams != i_track )
 322     {
 323         msg_Warn( p_demux,
 324                   "found %d stream but %d are declared",
 325                   i_track, p_avih->i_streams );
 326     }
 327     if( i_track == 0 )
 328     {
 329         msg_Err( p_demux, "no stream defined!" );
 330         goto error;
 331     }
 332
 333     /* print information on streams */
 334     msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
 335              i_track,
 336              p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 337              p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 338              p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 339              p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 340     if( ( p_sys->meta = vlc_meta_New() ) )
 341     {
 342         char buffer[200];
 343         snprintf( buffer, sizeof(buffer), "%s%s%s%s",
 344                   p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
 345                   p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
 346                   p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
 347                   p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
 348         vlc_meta_SetSetting( p_sys->meta, buffer );
 349     }
 350
 351     /* now read info on each stream and create ES */
 352     for( i = 0 ; i < i_track; i++ )
 353     {
 354         avi_track_t           *tk     = malloc( sizeof( avi_track_t ) );
 355         if( !tk )
 356             goto error;
 357
 358         avi_chunk_list_t      *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
 359         avi_chunk_strh_t      *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
 360         avi_chunk_STRING_t    *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
 361         avi_chunk_strf_auds_t *p_auds = NULL;
 362         avi_chunk_strf_vids_t *p_vids = NULL;
 363         es_format_t fmt;
 364
 365         memset( tk, 0, sizeof(*tk) );
 366         tk->b_eof = false;
 367         tk->b_activated = true;
 368
 369         p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
 370         p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
 371
 372         if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
 373         {
 374             msg_Warn( p_demux, "stream[%d] incomplete", i );
 375             free( tk );
 376             continue;
 377         }
 378
 379         tk->i_rate  = p_strh->i_rate;
 380         tk->i_scale = p_strh->i_scale;
 381         tk->i_samplesize = p_strh->i_samplesize;
 382         msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
 383                  i, tk->i_rate, tk->i_scale, tk->i_samplesize );
 384
 385         switch( p_strh->i_type )
 386         {
 387             case( AVIFOURCC_auds ):
 388                 tk->i_cat   = AUDIO_ES;
 389                 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
 390                                                   p_auds->p_wf->wFormatTag );
 391
 392                 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
 393                 if( tk->i_blocksize == 0 )
 394                 {
 395                     if( p_auds->p_wf->wFormatTag == 1 )
 396                         tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
 397                     else
 398                         tk->i_blocksize = 1;
 399                 }
 400                 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
 401                 {
 402                     msg_Warn( p_demux, "track[%d] samplesize=%d and blocksize=%d are not equal."
 403                                        "Using blocksize as a workaround.",
 404                                        i, tk->i_samplesize, tk->i_blocksize );
 405                     tk->i_samplesize = tk->i_blocksize;
 406                 }
 407
 408                 if( tk->i_codec == VLC_CODEC_VORBIS )
 409                 {
 410                     tk->i_blocksize = 0; /* fix vorbis VBR decoding */
 411                 }
 412
 413                 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
 414
 415                 fmt.audio.i_channels        = p_auds->p_wf->nChannels;
 416                 fmt.audio.i_rate            = p_auds->p_wf->nSamplesPerSec;
 417                 fmt.i_bitrate               = p_auds->p_wf->nAvgBytesPerSec*8;
 418                 fmt.audio.i_blockalign      = p_auds->p_wf->nBlockAlign;
 419                 fmt.audio.i_bitspersample   = p_auds->p_wf->wBitsPerSample;
 420                 fmt.b_packetized            = !tk->i_blocksize;
 421
 422                 msg_Dbg( p_demux,
 423                     "stream[%d] audio(0x%x) %d channels %dHz %dbits",
 424                     i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
 425                     p_auds->p_wf->nSamplesPerSec,
 426                     p_auds->p_wf->wBitsPerSample );
 427
 428                 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
 429                     p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
 430                 fmt.p_extra = tk->p_extra = malloc( fmt.i_extra );
 431                 if( !fmt.p_extra ) goto error;
 432                 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
 433
 434                 /* Rewrite the vorbis headers from Xiph-like format
 435                  * to VLC internal format
 436                  *
 437                  * Xiph format:
 438                  *  - 1st byte == N, is the number of packets - 1
 439                  *  - Following bytes are the size of the N first packets:
 440                  *      while( *p == 0xFF ) { size += 0xFF; p++ } size += *p;
 441                  *      (the size of the last packet is the size of remaining
 442                  *      data in the buffer)
 443                  *  - Finally, all the packets concatenated
 444                  *
 445                  * VLC format:
 446                  *  - Size of the packet on 16 bits (big endian) FIXME: should be 32 bits to be safe
 447                  *  - The packet itself
 448                  *  - Size of the next packet, and so on ...
 449                  */
 450
 451                 if( tk->i_codec == VLC_CODEC_VORBIS )
 452                 {
 453                     uint8_t *p_extra = fmt.p_extra;
 454                     size_t i_extra = fmt.i_extra;
 455
 456                     if( i_extra <= 1 ) break;
 457                     if( *p_extra++ != 2 ) break; /* 3 packets - 1 = 2 */
 458                     i_extra--;
 459
 460                     size_t i_identifier_len = 0;
 461                     while( *p_extra == 0xFF )
 462                     {
 463                         i_identifier_len += 0xFF;
 464                         p_extra++;
 465                         if( --i_extra <= 1 ) break;
 466                     }
 467                     i_identifier_len += *p_extra++;
 468                     if( i_identifier_len > --i_extra ) break;
 469
 470                     size_t i_comment_len = 0;
 471                     while( *p_extra == 0xFF )
 472                     {
 473                         i_comment_len += 0xFF;
 474                         p_extra++;
 475                         if( --i_extra <= 1 ) break;
 476                     }
 477                     i_comment_len += *p_extra++;
 478                     if( i_comment_len > --i_extra ) break;
 479                     size_t i_cookbook_len = i_extra;
 480
 481                     size_t i_headers_size = 3  * 2 + i_identifier_len +
 482                                             i_comment_len + i_cookbook_len;
 483                     uint8_t *p_out = malloc( i_headers_size );
 484                     if( !p_out ) goto error;
 485                     free( fmt.p_extra );
 486                     fmt.p_extra = tk->p_extra = p_out;
 487                     fmt.i_extra = i_headers_size;
 488                     #define copy_packet( len ) \
 489                         *p_out++ = len >> 8; \
 490                         *p_out++ = len & 0xFF; \
 491                         memcpy( p_out, p_extra, len ); \
 492                         p_out += len; \
 493                         p_extra += len;
 494                     copy_packet( i_identifier_len );
 495                     copy_packet( i_comment_len );
 496                     copy_packet( i_cookbook_len );
 497                     #undef copy_packet
 498                     break;
 499                 }
 500                 break;
 501
 502             case( AVIFOURCC_vids ):
 503                 tk->i_cat   = VIDEO_ES;
 504                 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
 505                                                   p_vids->p_bih->biCompression );
 506                 if( p_vids->p_bih->biCompression == VLC_FOURCC( 'D', 'X', 'S', 'B' ) )
 507                 {
 508                    msg_Dbg( p_demux, "stream[%d] subtitles", i );
 509                    es_format_Init( &fmt, SPU_ES, p_vids->p_bih->biCompression );
 510                    break;
 511                 }
 512                 else if( p_vids->p_bih->biCompression == 0x00 )
 513                 {
 514                     switch( p_vids->p_bih->biBitCount )
 515                     {
 516                         case 32:
 517                             tk->i_codec = VLC_CODEC_RGB32;
 518                             break;
 519                         case 24:
 520                             tk->i_codec = VLC_CODEC_RGB24;
 521                             break;
 522                         case 16: /* Yes it is RV15 */
 523                         case 15:
 524                             tk->i_codec = VLC_CODEC_RGB15;
 525                             break;
 526                         case 9: /* <- TODO check that */
 527                             tk->i_codec = VLC_CODEC_I410;
 528                             break;
 529                         case 8: /* <- TODO check that */
 530                             tk->i_codec = VLC_CODEC_GREY;
 531                             break;
 532                     }
 533                     es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
 534
 535                     switch( tk->i_codec )
 536                     {
 537                     case VLC_CODEC_RGB24:
 538                     case VLC_CODEC_RGB32:
 539                         fmt.video.i_rmask = 0x00ff0000;
 540                         fmt.video.i_gmask = 0x0000ff00;
 541                         fmt.video.i_bmask = 0x000000ff;
 542                         break;
 543                     case VLC_CODEC_RGB15:
 544                         fmt.video.i_rmask = 0x7c00;
 545                         fmt.video.i_gmask = 0x03e0;
 546                         fmt.video.i_bmask = 0x001f;
 547                         break;
 548                     default:
 549                         break;
 550                     }
 551                 }
 552                 else
 553                 {
 554                     es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
 555                     if( tk->i_codec == VLC_CODEC_MP4V &&
 556                         !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
 557                     {
 558                         fmt.i_codec           =
 559                         fmt.i_original_fourcc = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 560                     }
 561                 }
 562                 tk->i_samplesize = 0;
 563                 fmt.video.i_width  = p_vids->p_bih->biWidth;
 564                 fmt.video.i_height = p_vids->p_bih->biHeight;
 565                 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
 566                 fmt.video.i_frame_rate = tk->i_rate;
 567                 fmt.video.i_frame_rate_base = tk->i_scale;
 568                 fmt.i_extra =
 569                     __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
 570                            p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
 571                 fmt.p_extra = &p_vids->p_bih[1];
 572                 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
 573                          i, (char*)&p_vids->p_bih->biCompression,
 574                          (uint32_t)p_vids->p_bih->biWidth,
 575                          (uint32_t)p_vids->p_bih->biHeight,
 576                          p_vids->p_bih->biBitCount,
 577                          (float)tk->i_rate/(float)tk->i_scale );
 578
 579                 if( p_vids->p_bih->biCompression == 0x00 )
 580                 {
 581                     /* RGB DIB are coded from bottom to top */
 582                     fmt.video.i_height =
 583                         (unsigned int)(-(int)p_vids->p_bih->biHeight);
 584                 }
 585
 586                 /* Extract palette from extradata if bpp <= 8
 587                  * (assumes that extradata contains only palette but appears
 588                  *  to be true for all palettized codecs we support) */
 589                 if( fmt.video.i_bits_per_pixel > 0 && fmt.video.i_bits_per_pixel <= 8 )
 590                 {
 591                     /* The palette is not always included in biSize */
 592                     fmt.i_extra = p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
 593                     if( fmt.i_extra > 0 )
 594                     {
 595                         const uint8_t *p_pal = fmt.p_extra;
 596
 597                         fmt.video.p_palette = calloc( 1, sizeof(video_palette_t) );
 598                         fmt.video.p_palette->i_entries = __MIN(fmt.i_extra/4, 256);
 599
 600                         for( int i = 0; i < fmt.video.p_palette->i_entries; i++ )
 601                         {
 602                             for( int j = 0; j < 4; j++ )
 603                                 fmt.video.p_palette->palette[i][j] = p_pal[4*i+j];
 604                         }
 605                     }
 606                 }
 607                 break;
 608
 609             case( AVIFOURCC_txts):
 610                 tk->i_cat   = SPU_ES;
 611                 tk->i_codec = VLC_CODEC_SUBT;
 612                 msg_Dbg( p_demux, "stream[%d] subtitles", i );
 613                 es_format_Init( &fmt, SPU_ES, tk->i_codec );
 614                 break;
 615
 616             case( AVIFOURCC_iavs):
 617             case( AVIFOURCC_ivas):
 618                 p_sys->b_muxed = true;
 619                 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
 620                 if( p_strh->i_handler == FOURCC_dvsd ||
 621                     p_strh->i_handler == FOURCC_dvhd ||
 622                     p_strh->i_handler == FOURCC_dvsl ||
 623                     p_strh->i_handler == FOURCC_dv25 ||
 624                     p_strh->i_handler == FOURCC_dv50 )
 625                 {
 626                     tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
 627                     if( !tk->p_out_muxed )
 628                         msg_Err( p_demux, "could not load the DV parser" );
 629                     else break;
 630                 }
 631                 free( tk );
 632                 continue;
 633
 634             case( AVIFOURCC_mids):
 635                 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
 636
 637             default:
 638                 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
 639                 free( tk );
 640                 continue;
 641         }
 642         if( p_strn )
 643             fmt.psz_description = FromLatin1( p_strn->p_str );
 644         if( tk->p_out_muxed == NULL )
 645             tk->p_es = es_out_Add( p_demux->out, &fmt );
 646         TAB_APPEND( p_sys->i_track, p_sys->track, tk );
 647     }
 648
 649     if( p_sys->i_track <= 0 )
 650     {
 651         msg_Err( p_demux, "no valid track" );
 652         goto error;
 653     }
 654
 655     i_do_index =  config_GetInt( p_demux, "avi-index" );
 656     if( i_do_index == 1 ) /* Always fix */
 657     {
 658 aviindex:
 659         if( p_sys->b_seekable )
 660         {
 661             AVI_IndexCreate( p_demux );
 662         }
 663         else
 664         {
 665             msg_Warn( p_demux, "cannot create index (unseekable stream)" );
 666             AVI_IndexLoad( p_demux );
 667         }
 668     }
 669     else
 670     {
 671         AVI_IndexLoad( p_demux );
 672     }
 673
 674     /* *** movie length in sec *** */
 675     p_sys->i_length = AVI_MovieGetLength( p_demux );
 676     if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
 677                           (mtime_t)p_avih->i_microsecperframe /
 678                           (mtime_t)1000000 )
 679     {
 680         if( !vlc_object_alive( p_demux) )
 681             goto error;
 682
 683         msg_Warn( p_demux, "broken or missing index, 'seek' will be "
 684                            "approximative or will exhibit strange behavior" );
 685         if( i_do_index == 0 && !b_index )
 686         {
 687             if( !p_sys->b_seekable ) {
 688                 b_index = true;
 689                 goto aviindex;
 690             }
 691             switch( dialog_Question( p_demux, _("AVI Index") ,
 692                _( "This AVI file is broken. Seeking will not work correctly.\n"
 693                   "Do you want to try to fix it?\n\n"
 694                   "This might take a long time." ),
 695                   _( "Repair" ), _( "Don't repair" ), _( "Cancel") ) )
 696             {
 697                 case 1:
 698                     b_index = true;
 699                     msg_Dbg( p_demux, "Fixing AVI index" );
 700                     goto aviindex;
 701                 case 3:
 702                     /* Kill input */
 703                     vlc_object_kill( p_demux->p_parent );
 704                     goto error;
 705             }
 706         }
 707     }
 708
 709     /* fix some BeOS MediaKit generated file */
 710     for( i = 0 ; i < p_sys->i_track; i++ )
 711     {
 712         avi_track_t         *tk = p_sys->track[i];
 713         avi_chunk_list_t    *p_strl;
 714         avi_chunk_strh_t    *p_strh;
 715         avi_chunk_strf_auds_t    *p_auds;
 716
 717         if( tk->i_cat != AUDIO_ES )
 718         {
 719             continue;
 720         }
 721         if( tk->i_idxnb < 1 ||
 722             tk->i_scale != 1 ||
 723             tk->i_samplesize != 0 )
 724         {
 725             continue;
 726         }
 727         p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
 728         p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
 729         p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
 730
 731         if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
 732             (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
 733         {
 734             int64_t i_track_length =
 735                 tk->p_index[tk->i_idxnb-1].i_length +
 736                 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
 737             mtime_t i_length = (mtime_t)p_avih->i_totalframes *
 738                                (mtime_t)p_avih->i_microsecperframe;
 739
 740             if( i_length == 0 )
 741             {
 742                 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
 743                 continue;
 744             }
 745             tk->i_samplesize = 1;
 746             tk->i_rate       = i_track_length  * (int64_t)1000000/ i_length;
 747             msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
 748         }
 749     }
 750
 751     if( p_sys->b_seekable )
 752     {
 753         /* we have read all chunk so go back to movi */
 754         stream_Seek( p_demux->s, p_movi->i_chunk_pos );
 755     }
 756     /* Skip movi header */
 757     stream_Read( p_demux->s, NULL, 12 );
 758
 759     p_sys->i_movi_begin = p_movi->i_chunk_pos;
 760     return VLC_SUCCESS;
 761
 762 error:
 763     if( p_sys->meta )
 764     {
 765         vlc_meta_Delete( p_sys->meta );
 766     }
 767     AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
 768     free( p_sys );
 769     return vlc_object_alive( p_demux ) ? VLC_EGENERIC : VLC_ETIMEOUT;
 770 }
 771
 772 /*****************************************************************************
 773  * Close: frees unused data
 774  *****************************************************************************/
 775 static void Close ( vlc_object_t * p_this )
 776 {
 777     demux_t *    p_demux = (demux_t *)p_this;
 778     unsigned int i;
 779     demux_sys_t *p_sys = p_demux->p_sys  ;
 780
 781     for( i = 0; i < p_sys->i_track; i++ )
 782     {
 783         if( p_sys->track[i] )
 784         {
 785             if( p_sys->track[i]->p_out_muxed )
 786                 stream_Delete( p_sys->track[i]->p_out_muxed );
 787             free( p_sys->track[i]->p_index );
 788             free( p_sys->track[i]->p_extra );
 789             free( p_sys->track[i] );
 790         }
 791     }
 792     free( p_sys->track );
 793     AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
 794     vlc_meta_Delete( p_sys->meta );
 795
 796     free( p_sys );
 797 }
 798
 799 /*****************************************************************************
 800  * Demux_Seekable: reads and demuxes data packets for stream seekable
 801  *****************************************************************************
 802  * AVIDemux: reads and demuxes data packets
 803  *****************************************************************************
 804  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
 805  *****************************************************************************/
 806 typedef struct
 807 {
 808     bool b_ok;
 809
 810     int i_toread;
 811
 812     off_t i_posf; /* where we will read :
 813                    if i_idxposb == 0 : begining of chunk (+8 to acces data)
 814                    else : point on data directly */
 815 } avi_track_toread_t;
 816
 817 static int Demux_Seekable( demux_t *p_demux )
 818 {
 819     demux_sys_t *p_sys = p_demux->p_sys;
 820
 821     unsigned int i_track_count = 0;
 822     unsigned int i_track;
 823     /* cannot be more than 100 stream (dcXX or wbXX) */
 824     avi_track_toread_t toread[100];
 825
 826
 827     /* detect new selected/unselected streams */
 828     for( i_track = 0; i_track < p_sys->i_track; i_track++ )
 829     {
 830         avi_track_t *tk = p_sys->track[i_track];
 831         bool  b;
 832
 833         if( p_sys->b_muxed && tk->p_out_muxed )
 834         {
 835             i_track_count++;
 836             tk->b_activated = true;
 837             continue;
 838         }
 839
 840         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
 841         if( b && !tk->b_activated )
 842         {
 843             if( p_sys->b_seekable)
 844             {
 845                 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
 846             }
 847             tk->b_activated = true;
 848         }
 849         else if( !b && tk->b_activated )
 850         {
 851             tk->b_activated = false;
 852         }
 853         if( b )
 854         {
 855             i_track_count++;
 856         }
 857     }
 858
 859     if( i_track_count <= 0 )
 860     {
 861         int64_t i_length = p_sys->i_length * (mtime_t)1000000;
 862
 863         p_sys->i_time += 25*1000;  /* read 25ms */
 864         if( i_length > 0 )
 865         {
 866             if( p_sys->i_time >= i_length )
 867                 return 0;
 868             return 1;
 869         }
 870         msg_Warn( p_demux, "no track selected, exiting..." );
 871         return 0;
 872     }
 873
 874     /* wait for the good time */
 875     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
 876     p_sys->i_time += 25*1000;  /* read 25ms */
 877
 878     /* init toread */
 879     for( i_track = 0; i_track < p_sys->i_track; i_track++ )
 880     {
 881         avi_track_t *tk = p_sys->track[i_track];
 882         mtime_t i_dpts;
 883
 884         toread[i_track].b_ok = tk->b_activated && !tk->b_eof;
 885         if( tk->i_idxposc < tk->i_idxnb )
 886         {
 887             toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
 888            if( tk->i_idxposb > 0 )
 889            {
 890                 toread[i_track].i_posf += 8 + tk->i_idxposb;
 891            }
 892         }
 893         else
 894         {
 895             toread[i_track].i_posf = -1;
 896         }
 897
 898         i_dpts = p_sys->i_time - AVI_GetPTS( tk  );
 899
 900         if( tk->i_samplesize )
 901         {
 902             toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
 903         }
 904         else
 905         {
 906             toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
 907         }
 908
 909         if( i_dpts < 0 )
 910         {
 911             toread[i_track].i_toread *= -1;
 912         }
 913     }
 914
 915     for( ;; )
 916     {
 917         avi_track_t     *tk;
 918         bool       b_done;
 919         block_t         *p_frame;
 920         off_t i_pos;
 921         unsigned int i;
 922         size_t i_size;
 923
 924         /* search for first chunk to be read */
 925         for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
 926         {
 927             if( !toread[i].b_ok ||
 928                 AVI_GetDPTS( p_sys->track[i],
 929                              toread[i].i_toread ) <= -25 * 1000 )
 930             {
 931                 continue;
 932             }
 933
 934             if( toread[i].i_toread > 0 )
 935             {
 936                 b_done = false; /* not yet finished */
 937             }
 938             if( toread[i].i_posf > 0 )
 939             {
 940                 if( i_pos == -1 || i_pos > toread[i].i_posf )
 941                 {
 942                     i_track = i;
 943                     i_pos = toread[i].i_posf;
 944                 }
 945             }
 946         }
 947
 948         if( b_done )
 949         {
 950             for( i = 0; i < p_sys->i_track; i++ )
 951             {
 952                 if( toread[i].b_ok )
 953                     return 1;
 954             }
 955             msg_Warn( p_demux, "all tracks have failed, exiting..." );
 956             return 0;
 957         }
 958
 959         if( i_pos == -1 )
 960         {
 961             int i_loop_count = 0;
 962
 963             /* no valid index, we will parse directly the stream
 964              * in case we fail we will disable all finished stream */
 965             if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
 966             {
 967                 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
 968                 if( AVI_PacketNext( p_demux ) )
 969                 {
 970                     return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
 971                 }
 972             }
 973             else
 974             {
 975                 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
 976             }
 977
 978             for( ;; )
 979             {
 980                 avi_packet_t avi_pk;
 981
 982                 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
 983                 {
 984                     msg_Warn( p_demux,
 985                              "cannot get packet header, track disabled" );
 986                     return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
 987                 }
 988                 if( avi_pk.i_stream >= p_sys->i_track ||
 989                     ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
 990                 {
 991                     if( AVI_PacketNext( p_demux ) )
 992                     {
 993                         msg_Warn( p_demux,
 994                                   "cannot skip packet, track disabled" );
 995                         return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
 996                     }
 997
 998                     /* Prevents from eating all the CPU with broken files.
 999                      * This value should be low enough so that it doesn't
1000                      * affect the reading speed too much. */
1001                     if( !(++i_loop_count % 1024) )
1002                     {
1003                         if( !vlc_object_alive (p_demux) ) return -1;
1004                         msleep( 10000 );
1005
1006                         if( !(i_loop_count % (1024 * 10)) )
1007                             msg_Warn( p_demux,
1008                                       "don't seem to find any data..." );
1009                     }
1010                     continue;
1011                 }
1012                 else
1013                 {
1014                     /* add this chunk to the index */
1015                     avi_entry_t index;
1016
1017                     index.i_id = avi_pk.i_fourcc;
1018                     index.i_flags =
1019                        AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1020                                       avi_pk.i_peek);
1021                     index.i_pos = avi_pk.i_pos;
1022                     index.i_length = avi_pk.i_size;
1023                     AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1024
1025                     i_track = avi_pk.i_stream;
1026                     tk = p_sys->track[i_track];
1027                     /* do we will read this data ? */
1028                     if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1029                     {
1030                         break;
1031                     }
1032                     else
1033                     {
1034                         if( AVI_PacketNext( p_demux ) )
1035                         {
1036                             msg_Warn( p_demux,
1037                                       "cannot skip packet, track disabled" );
1038                             return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1039                         }
1040                     }
1041                 }
1042             }
1043
1044         }
1045         else
1046         {
1047             stream_Seek( p_demux->s, i_pos );
1048         }
1049
1050         /* Set the track to use */
1051         tk = p_sys->track[i_track];
1052
1053         /* read thoses data */
1054         if( tk->i_samplesize )
1055         {
1056             unsigned int i_toread;
1057
1058             if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1059             {
1060                 if( tk->i_samplesize > 1 )
1061                 {
1062                     i_toread = tk->i_samplesize;
1063                 }
1064                 else
1065                 {
1066                     i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1067                     i_toread = __MAX( i_toread, 100 );
1068                 }
1069             }
1070             i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
1071                                 tk->i_idxposb,
1072                             i_toread );
1073         }
1074         else
1075         {
1076             i_size = tk->p_index[tk->i_idxposc].i_length;
1077         }
1078
1079         if( tk->i_idxposb == 0 )
1080         {
1081             i_size += 8; /* need to read and skip header */
1082         }
1083
1084         if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1085         {
1086             msg_Warn( p_demux, "failed reading data" );
1087             tk->b_eof = false;
1088             toread[i_track].b_ok = false;
1089             continue;
1090         }
1091         if( i_size % 2 )    /* read was padded on word boundary */
1092         {
1093             p_frame->i_buffer--;
1094         }
1095         /* skip header */
1096         if( tk->i_idxposb == 0 )
1097         {
1098             p_frame->p_buffer += 8;
1099             p_frame->i_buffer -= 8;
1100         }
1101         p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1102         if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1103         {
1104             p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1105         }
1106         else
1107         {
1108             p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1109         }
1110
1111         /* read data */
1112         if( tk->i_samplesize )
1113         {
1114             if( tk->i_idxposb == 0 )
1115             {
1116                 i_size -= 8;
1117             }
1118             toread[i_track].i_toread -= i_size;
1119             tk->i_idxposb += i_size;
1120             if( tk->i_idxposb >=
1121                     tk->p_index[tk->i_idxposc].i_length )
1122             {
1123                 tk->i_idxposb = 0;
1124                 tk->i_idxposc++;
1125             }
1126         }
1127         else
1128         {
1129             int i_length = tk->p_index[tk->i_idxposc].i_length;
1130
1131             tk->i_idxposc++;
1132             if( tk->i_cat == AUDIO_ES )
1133             {
1134                 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1135             }
1136             toread[i_track].i_toread--;
1137         }
1138
1139         if( tk->i_idxposc < tk->i_idxnb)
1140         {
1141             toread[i_track].i_posf =
1142                 tk->p_index[tk->i_idxposc].i_pos;
1143             if( tk->i_idxposb > 0 )
1144             {
1145                 toread[i_track].i_posf += 8 + tk->i_idxposb;
1146             }
1147
1148         }
1149         else
1150         {
1151             toread[i_track].i_posf = -1;
1152         }
1153
1154         if( tk->i_cat != VIDEO_ES )
1155             p_frame->i_dts = p_frame->i_pts;
1156         else
1157         {
1158             p_frame->i_dts = p_frame->i_pts;
1159             p_frame->i_pts = 0;
1160         }
1161
1162         //p_pes->i_rate = p_demux->stream.control.i_rate;
1163         if( tk->p_out_muxed )
1164             stream_DemuxSend( tk->p_out_muxed, p_frame );
1165         else
1166             es_out_Send( p_demux->out, tk->p_es, p_frame );
1167     }
1168 }
1169
1170
1171 /*****************************************************************************
1172  * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1173  *****************************************************************************
1174  * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1175  *****************************************************************************/
1176 static int Demux_UnSeekable( demux_t *p_demux )
1177 {
1178     demux_sys_t     *p_sys = p_demux->p_sys;
1179     avi_track_t *p_stream_master = NULL;
1180     unsigned int i_stream;
1181     unsigned int i_packet;
1182
1183     if( p_sys->b_muxed )
1184     {
1185         msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1186         return VLC_EGENERIC;
1187     }
1188
1189     es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1190
1191     /* *** find master stream for data packet skipping algo *** */
1192     /* *** -> first video, if any, or first audio ES *** */
1193     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1194     {
1195         avi_track_t *tk = p_sys->track[i_stream];
1196         bool  b;
1197
1198         es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1199
1200         if( b && tk->i_cat == VIDEO_ES )
1201         {
1202             p_stream_master = tk;
1203         }
1204         else if( b )
1205         {
1206             p_stream_master = tk;
1207         }
1208     }
1209
1210     if( !p_stream_master )
1211     {
1212         msg_Warn( p_demux, "no more stream selected" );
1213         return( 0 );
1214     }
1215
1216     p_sys->i_time = AVI_GetPTS( p_stream_master );
1217
1218     for( i_packet = 0; i_packet < 10; i_packet++)
1219     {
1220 #define p_stream    p_sys->track[avi_pk.i_stream]
1221
1222         avi_packet_t    avi_pk;
1223
1224         if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1225         {
1226             return( 0 );
1227         }
1228
1229         if( avi_pk.i_stream >= p_sys->i_track ||
1230             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1231         {
1232             /* we haven't found an audio or video packet:
1233              *  - we have seek, found first next packet
1234              *  - others packets could be found, skip them
1235              */
1236             switch( avi_pk.i_fourcc )
1237             {
1238                 case AVIFOURCC_JUNK:
1239                 case AVIFOURCC_LIST:
1240                 case AVIFOURCC_RIFF:
1241                     return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1242                 case AVIFOURCC_idx1:
1243                     if( p_sys->b_odml )
1244                     {
1245                         return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1246                     }
1247                     return( 0 );    /* eof */
1248                 default:
1249                     msg_Warn( p_demux,
1250                               "seems to have lost position, resync" );
1251                     if( AVI_PacketSearch( p_demux ) )
1252                     {
1253                         msg_Err( p_demux, "resync failed" );
1254                         return( -1 );
1255                     }
1256             }
1257         }
1258         else
1259         {
1260             /* check for time */
1261             if( __ABS( AVI_GetPTS( p_stream ) -
1262                         AVI_GetPTS( p_stream_master ) )< 600*1000 )
1263             {
1264                 /* load it and send to decoder */
1265                 block_t *p_frame;
1266                 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1267                 {
1268                     return( -1 );
1269                 }
1270                 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1271
1272                 if( avi_pk.i_cat != VIDEO_ES )
1273                     p_frame->i_dts = p_frame->i_pts;
1274                 else
1275                 {
1276                     p_frame->i_dts = p_frame->i_pts;
1277                     p_frame->i_pts = 0;
1278                 }
1279
1280                 //p_pes->i_rate = p_demux->stream.control.i_rate;
1281                 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1282             }
1283             else
1284             {
1285                 if( AVI_PacketNext( p_demux ) )
1286                 {
1287                     return( 0 );
1288                 }
1289             }
1290
1291             /* *** update stream time position *** */
1292             if( p_stream->i_samplesize )
1293             {
1294                 p_stream->i_idxposb += avi_pk.i_size;
1295             }
1296             else
1297             {
1298                 if( p_stream->i_cat == AUDIO_ES )
1299                 {
1300                     p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1301                 }
1302                 p_stream->i_idxposc++;
1303             }
1304
1305         }
1306 #undef p_stream
1307     }
1308
1309     return( 1 );
1310 }
1311
1312 /*****************************************************************************
1313  * Seek: goto to i_date or i_percent
1314  *****************************************************************************/
1315 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1316 {
1317
1318     demux_sys_t *p_sys = p_demux->p_sys;
1319     unsigned int i_stream;
1320     msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1321              i_date / 1000000, i_percent );
1322
1323     if( p_sys->b_seekable )
1324     {
1325         if( !p_sys->i_length )
1326         {
1327             avi_track_t *p_stream;
1328             int64_t i_pos;
1329
1330             /* use i_percent to create a true i_date */
1331             msg_Warn( p_demux, "seeking without index at %d%%"
1332                       " only works for interleaved files", i_percent );
1333             if( i_percent >= 100 )
1334             {
1335                 msg_Warn( p_demux, "cannot seek so far !" );
1336                 return VLC_EGENERIC;
1337             }
1338             i_percent = __MAX( i_percent, 0 );
1339
1340             /* try to find chunk that is at i_percent or the file */
1341             i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1342                            p_sys->i_movi_begin );
1343             /* search first selected stream (and prefer non eof ones) */
1344             for( i_stream = 0, p_stream = NULL;
1345                         i_stream < p_sys->i_track; i_stream++ )
1346             {
1347                 if( !p_stream || p_stream->b_eof )
1348                     p_stream = p_sys->track[i_stream];
1349
1350                 if( p_stream->b_activated && !p_stream->b_eof )
1351                     break;
1352             }
1353             if( !p_stream || !p_stream->b_activated )
1354             {
1355                 msg_Warn( p_demux, "cannot find any selected stream" );
1356                 return VLC_EGENERIC;
1357             }
1358
1359             /* be sure that the index exist */
1360             if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1361             {
1362                 msg_Warn( p_demux, "cannot seek" );
1363                 return VLC_EGENERIC;
1364             }
1365
1366             while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1367                p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1368             {
1369                 /* search after i_idxposc */
1370                 if( AVI_StreamChunkSet( p_demux,
1371                                         i_stream, p_stream->i_idxposc + 1 ) )
1372                 {
1373                     msg_Warn( p_demux, "cannot seek" );
1374                     return VLC_EGENERIC;
1375                 }
1376             }
1377
1378             i_date = AVI_GetPTS( p_stream );
1379             /* TODO better support for i_samplesize != 0 */
1380             msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1381         }
1382
1383         /* */
1384         for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1385         {
1386             avi_track_t *p_stream = p_sys->track[i_stream];
1387
1388             if( !p_stream->b_activated )
1389                 continue;
1390
1391             p_stream->b_eof = AVI_TrackSeek( p_demux, i_stream, i_date ) != 0;
1392         }
1393         es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_date );
1394         p_sys->i_time = i_date;
1395         msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1396         return VLC_SUCCESS;
1397     }
1398     else
1399     {
1400         msg_Err( p_demux, "shouldn't yet be executed" );
1401         return VLC_EGENERIC;
1402     }
1403 }
1404
1405 /*****************************************************************************
1406  * Control:
1407  *****************************************************************************/
1408 static double ControlGetPosition( demux_t *p_demux )
1409 {
1410     demux_sys_t *p_sys = p_demux->p_sys;
1411
1412     if( p_sys->i_length > 0 )
1413     {
1414         return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1415     }
1416     else if( stream_Size( p_demux->s ) > 0 )
1417     {
1418         unsigned int i;
1419         int64_t i_tmp;
1420         int64_t i64 = 0;
1421
1422         /* search the more advanced selected es */
1423         for( i = 0; i < p_sys->i_track; i++ )
1424         {
1425             avi_track_t *tk = p_sys->track[i];
1426             if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1427             {
1428                 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1429                         tk->p_index[tk->i_idxposc].i_length + 8;
1430                 if( i_tmp > i64 )
1431                 {
1432                     i64 = i_tmp;
1433                 }
1434             }
1435         }
1436         return (double)i64 / stream_Size( p_demux->s );
1437     }
1438     return 0.0;
1439 }
1440
1441 static int Control( demux_t *p_demux, int i_query, va_list args )
1442 {
1443     demux_sys_t *p_sys = p_demux->p_sys;
1444     int i;
1445     double   f, *pf;
1446     int64_t i64, *pi64;
1447     vlc_meta_t *p_meta;
1448
1449     switch( i_query )
1450     {
1451         case DEMUX_GET_POSITION:
1452             pf = (double*)va_arg( args, double * );
1453             *pf = ControlGetPosition( p_demux );
1454             return VLC_SUCCESS;
1455         case DEMUX_SET_POSITION:
1456             f = (double)va_arg( args, double );
1457             if( p_sys->b_seekable )
1458             {
1459                 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1460                 return Seek( p_demux, i64, (int)(f * 100) );
1461             }
1462             else
1463             {
1464                 int64_t i_pos = stream_Size( p_demux->s ) * f;
1465                 return stream_Seek( p_demux->s, i_pos );
1466             }
1467
1468         case DEMUX_GET_TIME:
1469             pi64 = (int64_t*)va_arg( args, int64_t * );
1470             *pi64 = p_sys->i_time;
1471             return VLC_SUCCESS;
1472
1473         case DEMUX_SET_TIME:
1474         {
1475             int i_percent = 0;
1476
1477             i64 = (int64_t)va_arg( args, int64_t );
1478             if( p_sys->i_length > 0 )
1479             {
1480                 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1481             }
1482             else if( p_sys->i_time > 0 )
1483             {
1484                 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1485                                    (double)i64 / (double)p_sys->i_time );
1486             }
1487             return Seek( p_demux, i64, i_percent );
1488         }
1489         case DEMUX_GET_LENGTH:
1490             pi64 = (int64_t*)va_arg( args, int64_t * );
1491             *pi64 = p_sys->i_length * (mtime_t)1000000;
1492             return VLC_SUCCESS;
1493
1494         case DEMUX_GET_FPS:
1495             pf = (double*)va_arg( args, double * );
1496             *pf = 0.0;
1497             for( i = 0; i < (int)p_sys->i_track; i++ )
1498             {
1499                 avi_track_t *tk = p_sys->track[i];
1500                 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1501                 {
1502                     *pf = (float)tk->i_rate / (float)tk->i_scale;
1503                     break;
1504                 }
1505             }
1506             return VLC_SUCCESS;
1507         case DEMUX_GET_META:
1508             p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1509             vlc_meta_Merge( p_meta,  p_sys->meta );
1510             return VLC_SUCCESS;
1511
1512         default:
1513             return VLC_EGENERIC;
1514     }
1515 }
1516
1517 /*****************************************************************************
1518  * Function to convert pts to chunk or byte
1519  *****************************************************************************/
1520
1521 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1522 {
1523     if( !tk->i_scale )
1524         return (mtime_t)0;
1525
1526     return (mtime_t)((int64_t)i_pts *
1527                      (int64_t)tk->i_rate /
1528                      (int64_t)tk->i_scale /
1529                      (int64_t)1000000 );
1530 }
1531 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1532 {
1533     if( !tk->i_scale || !tk->i_samplesize )
1534         return (mtime_t)0;
1535
1536     return (mtime_t)((int64_t)i_pts *
1537                      (int64_t)tk->i_rate /
1538                      (int64_t)tk->i_scale /
1539                      (int64_t)1000000 *
1540                      (int64_t)tk->i_samplesize );
1541 }
1542
1543 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1544 {
1545     mtime_t i_dpts = 0;
1546
1547     if( !tk->i_rate )
1548         return i_dpts;
1549
1550     i_dpts = (mtime_t)( (int64_t)1000000 *
1551                         (int64_t)i_count *
1552                         (int64_t)tk->i_scale /
1553                         (int64_t)tk->i_rate );
1554
1555     if( tk->i_samplesize )
1556     {
1557         return i_dpts / tk->i_samplesize;
1558     }
1559     return i_dpts;
1560 }
1561
1562 static mtime_t AVI_GetPTS( avi_track_t *tk )
1563 {
1564     if( tk->i_samplesize )
1565     {
1566         int64_t i_count = 0;
1567
1568         /* we need a valid entry we will emulate one */
1569         if( tk->i_idxposc == tk->i_idxnb )
1570         {
1571             if( tk->i_idxposc )
1572             {
1573                 /* use the last entry */
1574                 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1575                             + tk->p_index[tk->i_idxnb - 1].i_length;
1576             }
1577         }
1578         else
1579         {
1580             i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1581         }
1582         return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1583     }
1584     else
1585     {
1586         if( tk->i_cat == AUDIO_ES )
1587         {
1588             return AVI_GetDPTS( tk, tk->i_blockno );
1589         }
1590         else
1591         {
1592             return AVI_GetDPTS( tk, tk->i_idxposc );
1593         }
1594     }
1595 }
1596
1597 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1598 {
1599     demux_sys_t *p_sys = p_demux->p_sys;
1600     avi_packet_t avi_pk;
1601     int i_loop_count = 0;
1602
1603     /* find first chunk of i_stream that isn't in index */
1604
1605     if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1606     {
1607         stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1608         if( AVI_PacketNext( p_demux ) )
1609         {
1610             return VLC_EGENERIC;
1611         }
1612     }
1613     else
1614     {
1615         stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1616     }
1617
1618     for( ;; )
1619     {
1620         if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1621
1622         if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1623         {
1624             msg_Warn( p_demux, "cannot get packet header" );
1625             return VLC_EGENERIC;
1626         }
1627         if( avi_pk.i_stream >= p_sys->i_track ||
1628             ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1629         {
1630             if( AVI_PacketNext( p_demux ) )
1631             {
1632                 return VLC_EGENERIC;
1633             }
1634
1635             /* Prevents from eating all the CPU with broken files.
1636              * This value should be low enough so that it doesn't
1637              * affect the reading speed too much. */
1638             if( !(++i_loop_count % 1024) )
1639             {
1640                 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1641                 msleep( 10000 );
1642
1643                 if( !(i_loop_count % (1024 * 10)) )
1644                     msg_Warn( p_demux, "don't seem to find any data..." );
1645             }
1646         }
1647         else
1648         {
1649             /* add this chunk to the index */
1650             avi_entry_t index;
1651
1652             index.i_id = avi_pk.i_fourcc;
1653             index.i_flags =
1654                AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1655                               avi_pk.i_peek);
1656             index.i_pos = avi_pk.i_pos;
1657             index.i_length = avi_pk.i_size;
1658             AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1659
1660             if( avi_pk.i_stream == i_stream  )
1661             {
1662                 return VLC_SUCCESS;
1663             }
1664
1665             if( AVI_PacketNext( p_demux ) )
1666             {
1667                 return VLC_EGENERIC;
1668             }
1669         }
1670     }
1671 }
1672
1673 /* be sure that i_ck will be a valid index entry */
1674 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1675                                unsigned int i_ck )
1676 {
1677     demux_sys_t *p_sys = p_demux->p_sys;
1678     avi_track_t *p_stream = p_sys->track[i_stream];
1679
1680     p_stream->i_idxposc = i_ck;
1681     p_stream->i_idxposb = 0;
1682
1683     if(  i_ck >= p_stream->i_idxnb )
1684     {
1685         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1686         do
1687         {
1688             p_stream->i_idxposc++;
1689             if( AVI_StreamChunkFind( p_demux, i_stream ) )
1690             {
1691                 return VLC_EGENERIC;
1692             }
1693
1694         } while( p_stream->i_idxposc < i_ck );
1695     }
1696
1697     return VLC_SUCCESS;
1698 }
1699
1700 /* XXX FIXME up to now, we assume that all chunk are one after one */
1701 static int AVI_StreamBytesSet( demux_t    *p_demux,
1702                                unsigned int i_stream,
1703                                off_t   i_byte )
1704 {
1705     demux_sys_t *p_sys = p_demux->p_sys;
1706     avi_track_t *p_stream = p_sys->track[i_stream];
1707
1708     if( ( p_stream->i_idxnb > 0 )
1709         &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1710                 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1711     {
1712         /* index is valid to find the ck */
1713         /* uses dichototmie to be fast enougth */
1714         int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1715         int i_idxmax  = p_stream->i_idxnb;
1716         int i_idxmin  = 0;
1717         for( ;; )
1718         {
1719             if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1720             {
1721                 i_idxmax  = i_idxposc ;
1722                 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1723             }
1724             else
1725             {
1726                 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1727                         p_stream->p_index[i_idxposc].i_length <= i_byte)
1728                 {
1729                     i_idxmin  = i_idxposc ;
1730                     i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1731                 }
1732                 else
1733                 {
1734                     p_stream->i_idxposc = i_idxposc;
1735                     p_stream->i_idxposb = i_byte -
1736                             p_stream->p_index[i_idxposc].i_lengthtotal;
1737                     return VLC_SUCCESS;
1738                 }
1739             }
1740         }
1741
1742     }
1743     else
1744     {
1745         p_stream->i_idxposc = p_stream->i_idxnb - 1;
1746         p_stream->i_idxposb = 0;
1747         do
1748         {
1749             p_stream->i_idxposc++;
1750             if( AVI_StreamChunkFind( p_demux, i_stream ) )
1751             {
1752                 return VLC_EGENERIC;
1753             }
1754
1755         } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1756                     p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1757
1758         p_stream->i_idxposb = i_byte -
1759                        p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1760         return VLC_SUCCESS;
1761     }
1762 }
1763
1764 static int AVI_TrackSeek( demux_t *p_demux,
1765                            int i_stream,
1766                            mtime_t i_date )
1767 {
1768     demux_sys_t  *p_sys = p_demux->p_sys;
1769     avi_track_t  *tk = p_sys->track[i_stream];
1770
1771 #define p_stream    p_sys->track[i_stream]
1772     mtime_t i_oldpts;
1773
1774     i_oldpts = AVI_GetPTS( p_stream );
1775
1776     if( !p_stream->i_samplesize )
1777     {
1778         if( AVI_StreamChunkSet( p_demux,
1779                                 i_stream,
1780                                 AVI_PTSToChunk( p_stream, i_date ) ) )
1781         {
1782             return VLC_EGENERIC;
1783         }
1784
1785         if( p_stream->i_cat == AUDIO_ES )
1786         {
1787             unsigned int i;
1788             tk->i_blockno = 0;
1789             for( i = 0; i < tk->i_idxposc; i++ )
1790             {
1791                 if( tk->i_blocksize > 0 )
1792                 {
1793                     tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1794                 }
1795                 else
1796                 {
1797                     tk->i_blockno++;
1798                 }
1799             }
1800         }
1801
1802         msg_Dbg( p_demux,
1803                  "old:%"PRId64" %s new %"PRId64,
1804                  i_oldpts,
1805                  i_oldpts > i_date ? ">" : "<",
1806                  i_date );
1807
1808         if( p_stream->i_cat == VIDEO_ES )
1809         {
1810             /* search key frame */
1811             //if( i_date < i_oldpts || 1 )
1812             {
1813                 while( p_stream->i_idxposc > 0 &&
1814                    !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1815                                                                 AVIIF_KEYFRAME ) )
1816                 {
1817                     if( AVI_StreamChunkSet( p_demux,
1818                                             i_stream,
1819                                             p_stream->i_idxposc - 1 ) )
1820                     {
1821                         return VLC_EGENERIC;
1822                     }
1823                 }
1824             }
1825 #if 0
1826             else
1827             {
1828                 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1829                         !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1830                                                                 AVIIF_KEYFRAME ) )
1831                 {
1832                     if( AVI_StreamChunkSet( p_demux,
1833                                             i_stream,
1834                                             p_stream->i_idxposc + 1 ) )
1835                     {
1836                         return VLC_EGENERIC;
1837                     }
1838                 }
1839             }
1840 #endif
1841         }
1842     }
1843     else
1844     {
1845         if( AVI_StreamBytesSet( p_demux,
1846                                 i_stream,
1847                                 AVI_PTSToByte( p_stream, i_date ) ) )
1848         {
1849             return VLC_EGENERIC;
1850         }
1851     }
1852     return VLC_SUCCESS;
1853 #undef p_stream
1854 }
1855
1856 /****************************************************************************
1857  * Return true if it's a key frame
1858  ****************************************************************************/
1859 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1860 {
1861     switch( i_fourcc )
1862     {
1863         case VLC_CODEC_DIV1:
1864             /* we have:
1865              *  startcode:      0x00000100   32bits
1866              *  framenumber     ?             5bits
1867              *  piture type     0(I),1(P)     2bits
1868              */
1869             if( GetDWBE( p_byte ) != 0x00000100 )
1870             {
1871                 /* it's not an msmpegv1 stream, strange...*/
1872                 return AVIIF_KEYFRAME;
1873             }
1874             return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1875
1876         case VLC_CODEC_DIV2:
1877         case VLC_CODEC_DIV3:
1878         case VLC_CODEC_WMV1:
1879             /* we have
1880              *  picture type    0(I),1(P)     2bits
1881              */
1882             return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1883         case VLC_CODEC_MP4V:
1884             /* we should find first occurrence of 0x000001b6 (32bits)
1885              *  startcode:      0x000001b6   32bits
1886              *  piture type     0(I),1(P)     2bits
1887              */
1888             if( GetDWBE( p_byte ) != 0x000001b6 )
1889             {
1890                 /* not true , need to find the first VOP header */
1891                 return AVIIF_KEYFRAME;
1892             }
1893             return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1894
1895         default:
1896             /* I can't do it, so say yes */
1897             return AVIIF_KEYFRAME;
1898     }
1899 }
1900
1901 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1902 {
1903     switch( i_cat )
1904     {
1905         case AUDIO_ES:
1906             wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1907             return i_codec;
1908         case VIDEO_ES:
1909             return vlc_fourcc_GetCodec( i_cat, i_codec );
1910         default:
1911             return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1912     }
1913 }
1914
1915 /****************************************************************************
1916  *
1917  ****************************************************************************/
1918 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1919                                    unsigned int *pi_number, unsigned int *pi_type )
1920 {
1921 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1922     int c1, c2;
1923
1924     c1 = ((uint8_t *)&i_id)[0];
1925     c2 = ((uint8_t *)&i_id)[1];
1926
1927     if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1928     {
1929         SET_PTR( pi_number, 100 ); /* > max stream number */
1930         SET_PTR( pi_type, UNKNOWN_ES );
1931     }
1932     else
1933     {
1934         SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1935         switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1936         {
1937             case AVITWOCC_wb:
1938                 SET_PTR( pi_type, AUDIO_ES );
1939                 break;
1940             case AVITWOCC_dc:
1941             case AVITWOCC_db:
1942             case AVITWOCC_AC:
1943                 SET_PTR( pi_type, VIDEO_ES );
1944                 break;
1945             default:
1946                 SET_PTR( pi_type, UNKNOWN_ES );
1947                 break;
1948         }
1949     }
1950 #undef SET_PTR
1951 }
1952
1953 /****************************************************************************
1954  *
1955  ****************************************************************************/
1956 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1957 {
1958     const uint8_t *p_peek;
1959
1960     if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1961     {
1962         return VLC_EGENERIC;
1963     }
1964     p_pk->i_fourcc  = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1965     p_pk->i_size    = GetDWLE( p_peek + 4 );
1966     p_pk->i_pos     = stream_Tell( p_demux->s );
1967     if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1968     {
1969         p_pk->i_type = VLC_FOURCC( p_peek[8],  p_peek[9],
1970                                    p_peek[10], p_peek[11] );
1971     }
1972     else
1973     {
1974         p_pk->i_type = 0;
1975     }
1976
1977     memcpy( p_pk->i_peek, p_peek + 8, 8 );
1978
1979     AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1980     return VLC_SUCCESS;
1981 }
1982
1983 static int AVI_PacketNext( demux_t *p_demux )
1984 {
1985     avi_packet_t    avi_ck;
1986     int             i_skip = 0;
1987
1988     if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1989     {
1990         return VLC_EGENERIC;
1991     }
1992
1993     if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
1994         ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
1995     {
1996         i_skip = 12;
1997     }
1998     else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
1999              avi_ck.i_type == AVIFOURCC_AVIX )
2000     {
2001         i_skip = 24;
2002     }
2003     else
2004     {
2005         i_skip = __EVEN( avi_ck.i_size ) + 8;
2006     }
2007
2008     if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2009     {
2010         return VLC_EGENERIC;
2011     }
2012     return VLC_SUCCESS;
2013 }
2014
2015 static int AVI_PacketRead( demux_t   *p_demux,
2016                            avi_packet_t     *p_pk,
2017                            block_t          **pp_frame )
2018 {
2019     size_t i_size;
2020
2021     i_size = __EVEN( p_pk->i_size + 8 );
2022
2023     if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2024     {
2025         return VLC_EGENERIC;
2026     }
2027     (*pp_frame)->p_buffer += 8;
2028     (*pp_frame)->i_buffer -= 8;
2029
2030     if( i_size != p_pk->i_size + 8 )
2031     {
2032         (*pp_frame)->i_buffer--;
2033     }
2034
2035     return VLC_SUCCESS;
2036 }
2037
2038 static int AVI_PacketSearch( demux_t *p_demux )
2039 {
2040     demux_sys_t     *p_sys = p_demux->p_sys;
2041     avi_packet_t    avi_pk;
2042     int             i_count = 0;
2043
2044     for( ;; )
2045     {
2046         if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2047         {
2048             return VLC_EGENERIC;
2049         }
2050         AVI_PacketGetHeader( p_demux, &avi_pk );
2051         if( avi_pk.i_stream < p_sys->i_track &&
2052             ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2053         {
2054             return VLC_SUCCESS;
2055         }
2056         switch( avi_pk.i_fourcc )
2057         {
2058             case AVIFOURCC_JUNK:
2059             case AVIFOURCC_LIST:
2060             case AVIFOURCC_RIFF:
2061             case AVIFOURCC_idx1:
2062                 return VLC_SUCCESS;
2063         }
2064
2065         /* Prevents from eating all the CPU with broken files.
2066          * This value should be low enough so that it doesn't affect the
2067          * reading speed too much (not that we care much anyway because
2068          * this code is called only on broken files). */
2069         if( !(++i_count % 1024) )
2070         {
2071             if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2072
2073             msleep( 10000 );
2074             if( !(i_count % (1024 * 10)) )
2075                 msg_Warn( p_demux, "trying to resync..." );
2076         }
2077     }
2078 }
2079
2080 /****************************************************************************
2081  * Index stuff.
2082  ****************************************************************************/
2083 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
2084                                int i_stream,
2085                                avi_entry_t *p_index)
2086 {
2087     avi_track_t *tk = p_sys->track[i_stream];
2088
2089     /* Update i_movi_lastchunk_pos */
2090     if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2091     {
2092         p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2093     }
2094
2095     /* add the entry */
2096     if( tk->i_idxnb >= tk->i_idxmax )
2097     {
2098         tk->i_idxmax += 16384;
2099         tk->p_index = realloc( tk->p_index,
2100                                tk->i_idxmax * sizeof( avi_entry_t ) );
2101         if( tk->p_index == NULL )
2102         {
2103             return;
2104         }
2105     }
2106     /* calculate cumulate length */
2107     if( tk->i_idxnb > 0 )
2108     {
2109         p_index->i_lengthtotal =
2110             tk->p_index[tk->i_idxnb - 1].i_length +
2111                 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2112     }
2113     else
2114     {
2115         p_index->i_lengthtotal = 0;
2116     }
2117
2118     tk->p_index[tk->i_idxnb++] = *p_index;
2119 }
2120
2121 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2122 {
2123     demux_sys_t *p_sys = p_demux->p_sys;
2124
2125     avi_chunk_list_t    *p_riff;
2126     avi_chunk_list_t    *p_movi;
2127     avi_chunk_idx1_t    *p_idx1;
2128
2129     unsigned int i_stream;
2130     unsigned int i_index;
2131     off_t        i_offset;
2132     unsigned int i;
2133
2134     bool b_keyset[100];
2135
2136     p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2137     p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2138     p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2139
2140     if( !p_idx1 )
2141     {
2142         msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2143         return VLC_EGENERIC;
2144     }
2145
2146     /* *** calculate offset *** */
2147     /* Well, avi is __SHIT__ so test more than one entry
2148      * (needed for some avi files) */
2149     i_offset = 0;
2150     for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2151     {
2152         if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2153         {
2154             i_offset = p_movi->i_chunk_pos + 8;
2155             break;
2156         }
2157     }
2158
2159     /* Reset b_keyset */
2160     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2161         b_keyset[i_stream] = false;
2162
2163     for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2164     {
2165         unsigned int i_cat;
2166
2167         AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2168                                &i_stream,
2169                                &i_cat );
2170         if( i_stream < p_sys->i_track &&
2171             i_cat == p_sys->track[i_stream]->i_cat )
2172         {
2173             avi_entry_t index;
2174             index.i_id      = p_idx1->entry[i_index].i_fourcc;
2175             index.i_flags   =
2176                 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2177             index.i_pos     = p_idx1->entry[i_index].i_pos + i_offset;
2178             index.i_length  = p_idx1->entry[i_index].i_length;
2179             AVI_IndexAddEntry( p_sys, i_stream, &index );
2180
2181             if( index.i_flags&AVIIF_KEYFRAME )
2182                 b_keyset[i_stream] = true;
2183         }
2184     }
2185
2186     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2187     {
2188         if( !b_keyset[i_stream] )
2189         {
2190             avi_track_t *tk = p_sys->track[i_stream];
2191
2192             msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2193             for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2194                 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2195         }
2196     }
2197     return VLC_SUCCESS;
2198 }
2199
2200 static void __Parse_indx( demux_t    *p_demux,
2201                           int               i_stream,
2202                           avi_chunk_indx_t  *p_indx )
2203 {
2204     demux_sys_t         *p_sys    = p_demux->p_sys;
2205     avi_entry_t     index;
2206     int32_t             i;
2207
2208     msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2209     if( p_indx->i_indexsubtype == 0 )
2210     {
2211         for( i = 0; i < p_indx->i_entriesinuse; i++ )
2212         {
2213             index.i_id      = p_indx->i_id;
2214             index.i_flags   = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2215             index.i_pos     = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2216             index.i_length  = p_indx->idx.std[i].i_size&0x7fffffff;
2217
2218             AVI_IndexAddEntry( p_sys, i_stream, &index );
2219         }
2220     }
2221     else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2222     {
2223         for( i = 0; i < p_indx->i_entriesinuse; i++ )
2224         {
2225             index.i_id      = p_indx->i_id;
2226             index.i_flags   = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2227             index.i_pos     = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2228             index.i_length  = p_indx->idx.field[i].i_size;
2229
2230             AVI_IndexAddEntry( p_sys, i_stream, &index );
2231         }
2232     }
2233     else
2234     {
2235         msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2236     }
2237 }
2238
2239 static void AVI_IndexLoad_indx( demux_t *p_demux )
2240 {
2241     demux_sys_t         *p_sys = p_demux->p_sys;
2242     unsigned int        i_stream;
2243     int32_t             i;
2244
2245     avi_chunk_list_t    *p_riff;
2246     avi_chunk_list_t    *p_hdrl;
2247
2248     p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2249     p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2250
2251     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2252     {
2253         avi_chunk_list_t    *p_strl;
2254         avi_chunk_indx_t    *p_indx;
2255
2256 #define p_stream  p_sys->track[i_stream]
2257         p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2258         p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2259
2260         if( !p_indx )
2261         {
2262             msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2263                                "file?)" );
2264             continue;
2265         }
2266
2267         if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2268         {
2269             __Parse_indx( p_demux, i_stream, p_indx );
2270         }
2271         else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2272         {
2273             avi_chunk_t    ck_sub;
2274             for( i = 0; i < p_indx->i_entriesinuse; i++ )
2275             {
2276                 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2277                     AVI_ChunkRead( p_demux->s, &ck_sub, NULL  ) )
2278                 {
2279                     break;
2280                 }
2281                 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2282             }
2283         }
2284         else
2285         {
2286             msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2287         }
2288 #undef p_stream
2289     }
2290 }
2291
2292 static void AVI_IndexLoad( demux_t *p_demux )
2293 {
2294     demux_sys_t *p_sys = p_demux->p_sys;
2295     unsigned int i_stream;
2296
2297     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2298     {
2299         p_sys->track[i_stream]->i_idxnb  = 0;
2300         p_sys->track[i_stream]->i_idxmax = 0;
2301         p_sys->track[i_stream]->p_index  = NULL;
2302     }
2303
2304     if( p_sys->b_odml )
2305     {
2306         AVI_IndexLoad_indx( p_demux );
2307     }
2308     else  if( AVI_IndexLoad_idx1( p_demux ) )
2309     {
2310         /* try indx if idx1 failed as some "normal" file have indx too */
2311         AVI_IndexLoad_indx( p_demux );
2312     }
2313
2314     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2315     {
2316         msg_Dbg( p_demux, "stream[%d] created %d index entries",
2317                 i_stream, p_sys->track[i_stream]->i_idxnb );
2318     }
2319 }
2320
2321 static void AVI_IndexCreate( demux_t *p_demux )
2322 {
2323     demux_sys_t *p_sys = p_demux->p_sys;
2324
2325     avi_chunk_list_t *p_riff;
2326     avi_chunk_list_t *p_movi;
2327
2328     unsigned int i_stream;
2329     off_t i_movi_end;
2330
2331     mtime_t i_dialog_update;
2332     dialog_progress_bar_t *p_dialog = NULL;
2333
2334     p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2335     p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2336
2337     if( !p_movi )
2338     {
2339         msg_Err( p_demux, "cannot find p_movi" );
2340         return;
2341     }
2342
2343     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2344     {
2345         p_sys->track[i_stream]->i_idxnb  = 0;
2346         p_sys->track[i_stream]->i_idxmax = 0;
2347         p_sys->track[i_stream]->p_index  = NULL;
2348     }
2349     i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2350                         stream_Size( p_demux->s ) );
2351
2352     stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2353     msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2354
2355
2356     /* Only show dialog if AVI is > 10MB */
2357     i_dialog_update = mdate();
2358     if( stream_Size( p_demux->s ) > 10000000 )
2359         p_dialog = dialog_ProgressCreate( p_demux, _("Fixing AVI Index..."),
2360                                        NULL, _("Cancel") );
2361
2362     for( ;; )
2363     {
2364         avi_packet_t pk;
2365
2366         if( !vlc_object_alive (p_demux) )
2367             break;
2368
2369         /* Don't update/check dialog too often */
2370         if( p_dialog && mdate() - i_dialog_update > 100000 )
2371         {
2372             if( dialog_ProgressCancelled( p_dialog ) )
2373                 break;
2374
2375             double f_current = stream_Tell( p_demux->s );
2376             double f_size    = stream_Size( p_demux->s );
2377             double f_pos     = f_current / f_size;
2378             dialog_ProgressSet( p_dialog, NULL, f_pos );
2379
2380             i_dialog_update = mdate();
2381         }
2382
2383         if( AVI_PacketGetHeader( p_demux, &pk ) )
2384             break;
2385
2386         if( pk.i_stream < p_sys->i_track &&
2387             pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2388         {
2389             avi_entry_t index;
2390             index.i_id      = pk.i_fourcc;
2391             index.i_flags   =
2392                AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2393             index.i_pos     = pk.i_pos;
2394             index.i_length  = pk.i_size;
2395             AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2396         }
2397         else
2398         {
2399             switch( pk.i_fourcc )
2400             {
2401             case AVIFOURCC_idx1:
2402                 if( p_sys->b_odml )
2403                 {
2404                     avi_chunk_list_t *p_sysx;
2405                     p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2406                                             AVIFOURCC_RIFF, 1 );
2407
2408                     msg_Dbg( p_demux, "looking for new RIFF chunk" );
2409                     if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2410                         goto print_stat;
2411                     break;
2412                 }
2413                 goto print_stat;
2414
2415             case AVIFOURCC_RIFF:
2416                     msg_Dbg( p_demux, "new RIFF chunk found" );
2417                     break;
2418
2419             case AVIFOURCC_rec:
2420             case AVIFOURCC_JUNK:
2421                 break;
2422
2423             default:
2424                 msg_Warn( p_demux, "need resync, probably broken avi" );
2425                 if( AVI_PacketSearch( p_demux ) )
2426                 {
2427                     msg_Warn( p_demux, "lost sync, abord index creation" );
2428                     goto print_stat;
2429                 }
2430             }
2431         }
2432
2433         if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2434             AVI_PacketNext( p_demux ) )
2435         {
2436             break;
2437         }
2438     }
2439
2440 print_stat:
2441     if( p_dialog != NULL )
2442         dialog_ProgressDestroy( p_dialog );
2443
2444     for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2445     {
2446         msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2447                 i_stream, p_sys->track[i_stream]->i_idxnb );
2448     }
2449 }
2450
2451 /*****************************************************************************
2452  * Stream management
2453  *****************************************************************************/
2454 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2455 {
2456     demux_sys_t *p_sys = p_demux->p_sys;
2457     unsigned int i;
2458     int b_end = true;
2459
2460     for( i = 0; i < p_sys->i_track; i++ )
2461     {
2462         avi_track_t *tk = p_sys->track[i];
2463         if( tk->i_idxposc >= tk->i_idxnb )
2464         {
2465             tk->b_eof = true;
2466         }
2467         else
2468         {
2469             b_end = false;
2470         }
2471     }
2472     return( b_end );
2473 }
2474
2475 /****************************************************************************
2476  * AVI_MovieGetLength give max streams length in second
2477  ****************************************************************************/
2478 static mtime_t  AVI_MovieGetLength( demux_t *p_demux )
2479 {
2480     demux_sys_t  *p_sys = p_demux->p_sys;
2481     mtime_t      i_maxlength = 0;
2482     unsigned int i;
2483
2484     for( i = 0; i < p_sys->i_track; i++ )
2485     {
2486         avi_track_t *tk = p_sys->track[i];
2487         mtime_t i_length;
2488
2489         /* fix length for each stream */
2490         if( tk->i_idxnb < 1 || !tk->p_index )
2491         {
2492             continue;
2493         }
2494
2495         if( tk->i_samplesize )
2496         {
2497             i_length = AVI_GetDPTS( tk,
2498                                     tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2499                                         tk->p_index[tk->i_idxnb-1].i_length );
2500         }
2501         else
2502         {
2503             i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2504         }
2505         i_length /= (mtime_t)1000000;    /* in seconds */
2506
2507         msg_Dbg( p_demux,
2508                  "stream[%d] length:%"PRId64" (based on index)",
2509                  i,
2510                  i_length );
2511         i_maxlength = __MAX( i_maxlength, i_length );
2512     }
2513
2514     return i_maxlength;
2515 }