1 /*****************************************************************************
2 * avi.c : AVI file Stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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.
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.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
26 #include <stdlib.h> /* malloc(), free() */
29 #include <vlc/input.h>
36 /*****************************************************************************
38 *****************************************************************************/
40 #define INTERLEAVE_TEXT N_("Force interleaved method" )
41 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method" )
43 #define INDEX_TEXT N_("Force index creation")
44 #define INDEX_LONGTEXT N_( \
45 "Recreate a index for the AVI file so we can seek trough it more reliably." )
47 static int Open ( vlc_object_t * );
48 static void Close( vlc_object_t * );
51 set_description( _("AVI demuxer") );
52 set_capability( "demux2", 212 );
54 add_bool( "avi-interleaved", 0, NULL,
55 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, VLC_TRUE );
56 add_bool( "avi-index", 0, NULL,
57 INDEX_TEXT, INDEX_LONGTEXT, VLC_TRUE );
59 set_callbacks( Open, Close );
62 /*****************************************************************************
64 *****************************************************************************/
65 static int Control ( demux_t *, int, va_list );
66 static int Seek ( demux_t *, mtime_t, int );
67 static int Demux_Seekable ( demux_t * );
68 static int Demux_UnSeekable( demux_t * );
70 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
71 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
75 vlc_fourcc_t i_fourcc;
78 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
80 uint8_t i_peek[8]; /* first 8 bytes */
82 unsigned int i_stream;
93 uint32_t i_lengthtotal;
99 vlc_bool_t b_activated;
101 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
102 vlc_fourcc_t i_codec;
110 avi_entry_t *p_index;
111 unsigned int i_idxnb;
112 unsigned int i_idxmax;
114 unsigned int i_idxposc; /* numero of chunk */
115 unsigned int i_idxposb; /* byte in the current chunk */
117 /* For VBR audio only */
118 unsigned int i_blockno;
119 unsigned int i_blocksize;
127 vlc_bool_t b_seekable;
133 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
135 /* number of streams and information */
136 unsigned int i_track;
143 static inline off_t __EVEN( off_t i )
145 return (i & 1) ? i + 1 : i;
148 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
149 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
150 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
151 static mtime_t AVI_GetPTS ( avi_track_t * );
154 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
155 static int AVI_StreamChunkSet ( demux_t *,
156 unsigned int i_stream, unsigned int i_ck );
157 static int AVI_StreamBytesSet ( demux_t *,
158 unsigned int i_stream, off_t i_byte );
160 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
161 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
163 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
164 static int AVI_PacketNext ( demux_t * );
165 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
166 static int AVI_PacketSearch ( demux_t * );
168 static void AVI_IndexLoad ( demux_t * );
169 static void AVI_IndexCreate ( demux_t * );
170 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
172 static mtime_t AVI_MovieGetLength( demux_t * );
174 /*****************************************************************************
176 *****************************************************************************/
177 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
178 static int AVI_TrackStopFinishedStreams( demux_t *);
181 - For VBR mp3 stream:
182 count blocks by rounded-up chunksizes instead of chunks
183 we need full emulation of dshow avi demuxer bugs :(
184 fixes silly nandub-style a-v delaying in avi with vbr mp3...
185 (from mplayer 2002/08/02)
189 /*****************************************************************************
190 * Open: check file and initializes AVI structures
191 *****************************************************************************/
192 static int Open( vlc_object_t * p_this )
194 demux_t *p_demux = (demux_t *)p_this;
198 avi_chunk_list_t *p_riff = (avi_chunk_list_t*)&ck_riff;
199 avi_chunk_list_t *p_hdrl, *p_movi;
200 avi_chunk_avih_t *p_avih;
202 unsigned int i_track;
203 unsigned int i, i_peeker;
208 /* Is it an avi file ? */
209 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 )
211 msg_Err( p_demux, "cannot peek()" );
214 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
216 if( !strncmp( &p_peek[0], "RIFF", 4 ) && !strncmp( &p_peek[8], "AVI ", 4 ) )
222 if( i_peeker == 188 )
224 msg_Warn( p_demux, "avi module discarded (invalid header)" );
228 /* Initialize input structures. */
229 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
230 memset( p_sys, 0, sizeof( demux_sys_t ) );
233 p_sys->i_movi_lastchunk_pos = 0;
234 p_sys->b_odml = VLC_FALSE;
239 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
241 p_demux->pf_control = Control;
242 p_demux->pf_demux = Demux_Seekable;
243 /* For unseekable stream, automaticaly use Demux_UnSeekable */
244 if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
246 p_demux->pf_demux = Demux_UnSeekable;
251 stream_Read( p_demux->s, NULL, i_peeker );
254 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
256 msg_Err( p_demux, "avi module discarded (invalid file)" );
260 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
262 unsigned int i_count =
263 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
265 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
266 for( i = 1; i < i_count; i++ )
268 avi_chunk_list_t *p_sysx;
270 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
271 if( p_sysx->i_type == AVIFOURCC_AVIX )
273 msg_Warn( p_demux, "detected OpenDML file" );
274 p_sys->b_odml = VLC_TRUE;
280 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
281 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
282 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
284 if( !p_hdrl || !p_movi )
286 msg_Err( p_demux, "avi module discarded (invalid file)" );
290 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
292 msg_Err( p_demux, "cannot find avih chunk" );
295 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
296 if( p_avih->i_streams != i_track )
299 "found %d stream but %d are declared",
300 i_track, p_avih->i_streams );
304 msg_Err( p_demux, "no stream defined!" );
308 /* print information on streams */
309 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
311 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
312 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
313 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
314 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
315 if( ( p_sys->meta = vlc_meta_New() ) )
318 sprintf( buffer, "%s%s%s%s",
319 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
320 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
321 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
322 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
323 vlc_meta_Add( p_sys->meta, VLC_META_SETTING, buffer );
326 /* now read info on each stream and create ES */
327 for( i = 0 ; i < i_track; i++ )
329 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
330 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
331 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
332 avi_chunk_strf_auds_t *p_auds;
333 avi_chunk_strf_vids_t *p_vids;
336 tk->b_activated = VLC_FALSE;
346 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
347 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
349 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
351 msg_Warn( p_demux, "stream[%d] incomplete", i );
355 tk->i_rate = p_strh->i_rate;
356 tk->i_scale = p_strh->i_scale;
357 tk->i_samplesize = p_strh->i_samplesize;
358 msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
359 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
361 switch( p_strh->i_type )
363 case( AVIFOURCC_auds ):
364 tk->i_cat = AUDIO_ES;
365 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
366 p_auds->p_wf->wFormatTag );
367 if( ( tk->i_blocksize = p_auds->p_wf->nBlockAlign ) == 0 )
369 if( p_auds->p_wf->wFormatTag == 1 )
371 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
378 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
380 fmt.audio.i_channels = p_auds->p_wf->nChannels;
381 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
382 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
383 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
384 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
385 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
386 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
387 fmt.p_extra = &p_auds->p_wf[1];
388 msg_Dbg( p_demux, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
389 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
390 p_auds->p_wf->nSamplesPerSec, p_auds->p_wf->wBitsPerSample);
393 case( AVIFOURCC_vids ):
394 tk->i_cat = VIDEO_ES;
395 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
396 p_vids->p_bih->biCompression );
397 if( p_vids->p_bih->biCompression == 0x00 )
399 switch( p_vids->p_bih->biBitCount )
402 tk->i_codec = VLC_FOURCC('R','V','3','2');
405 tk->i_codec = VLC_FOURCC('R','V','2','4');
408 /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
411 tk->i_codec = VLC_FOURCC('R','V','1','5');
414 tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
417 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
421 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
422 if( tk->i_codec == FOURCC_mp4v && !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
424 fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
427 tk->i_samplesize = 0;
428 fmt.video.i_width = p_vids->p_bih->biWidth;
429 fmt.video.i_height = p_vids->p_bih->biHeight;
430 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
432 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
433 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
434 fmt.p_extra = &p_vids->p_bih[1];
435 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
437 (char*)&p_vids->p_bih->biCompression,
438 p_vids->p_bih->biWidth,
439 p_vids->p_bih->biHeight,
440 p_vids->p_bih->biBitCount,
441 (float)tk->i_rate/(float)tk->i_scale );
444 msg_Warn( p_demux, "stream[%d] unknown type", i );
448 tk->p_es = es_out_Add( p_demux->out, &fmt );
449 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
452 if( p_sys->i_track <= 0 )
454 msg_Err( p_demux, "no valid track" );
458 if( config_GetInt( p_demux, "avi-index" ) )
460 if( p_sys->b_seekable )
462 AVI_IndexCreate( p_demux );
466 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
467 AVI_IndexLoad( p_demux );
472 AVI_IndexLoad( p_demux );
475 /* *** movie length in sec *** */
476 p_sys->i_length = AVI_MovieGetLength( p_demux );
477 if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
478 (mtime_t)p_avih->i_microsecperframe /
481 msg_Warn( p_demux, "broken or missing index, 'seek' will be axproximative or will have strange behavour" );
483 /* fix some BeOS MediaKit generated file */
484 for( i = 0 ; i < p_sys->i_track; i++ )
486 avi_track_t *tk = p_sys->track[i];
487 avi_chunk_list_t *p_strl;
488 avi_chunk_strh_t *p_strh;
489 avi_chunk_strf_auds_t *p_auds;
491 if( tk->i_cat != AUDIO_ES )
495 if( tk->i_idxnb < 1 ||
497 tk->i_samplesize != 0 )
501 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
502 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
503 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
505 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
506 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
508 int64_t i_track_length =
509 tk->p_index[tk->i_idxnb-1].i_length +
510 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
511 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
512 (mtime_t)p_avih->i_microsecperframe;
516 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
519 tk->i_samplesize = 1;
520 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
521 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
525 if( p_sys->b_seekable )
527 /* we have read all chunk so go back to movi */
528 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
530 /* Skip movi header */
531 stream_Read( p_demux->s, NULL, 12 );
533 p_sys->i_movi_begin = p_movi->i_chunk_pos;
539 vlc_meta_Delete( p_sys->meta );
541 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
546 /*****************************************************************************
547 * Close: frees unused data
548 *****************************************************************************/
549 static void Close ( vlc_object_t * p_this )
551 demux_t * p_demux = (demux_t *)p_this;
553 demux_sys_t *p_sys = p_demux->p_sys ;
555 for( i = 0; i < p_sys->i_track; i++ )
557 if( p_sys->track[i] )
559 FREE( p_sys->track[i]->p_index );
560 free( p_sys->track[i] );
563 FREE( p_sys->track );
564 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
565 vlc_meta_Delete( p_sys->meta );
570 /*****************************************************************************
571 * Demux_Seekable: reads and demuxes data packets for stream seekable
572 *****************************************************************************
573 * AVIDemux: reads and demuxes data packets
574 *****************************************************************************
575 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
576 *****************************************************************************/
583 off_t i_posf; /* where we will read :
584 if i_idxposb == 0 : begining of chunk (+8 to acces data)
585 else : point on data directly */
586 } avi_track_toread_t;
588 static int Demux_Seekable( demux_t *p_demux )
590 demux_sys_t *p_sys = p_demux->p_sys;
592 unsigned int i_track_count = 0;
593 unsigned int i_track;
595 /* cannot be more than 100 stream (dcXX or wbXX) */
596 avi_track_toread_t toread[100];
599 /* detect new selected/unselected streams */
600 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
602 avi_track_t *tk = p_sys->track[i_track];
605 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
606 if( b && !tk->b_activated )
608 if( p_sys->b_seekable)
610 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
612 tk->b_activated = VLC_TRUE;
614 else if( !b && tk->b_activated )
616 tk->b_activated = VLC_FALSE;
624 if( i_track_count <= 0 )
626 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
628 p_sys->i_time += 25*1000; /* read 25ms */
631 if( p_sys->i_time >= i_length )
635 msg_Warn( p_demux, "no track selected, exiting..." );
639 /* wait for the good time */
640 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
641 p_sys->i_time += 25*1000; /* read 25ms */
644 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
646 avi_track_t *tk = p_sys->track[i_track];
649 toread[i_track].b_ok = tk->b_activated;
650 if( tk->i_idxposc < tk->i_idxnb )
652 toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
653 if( tk->i_idxposb > 0 )
655 toread[i_track].i_posf += 8 + tk->i_idxposb;
660 toread[i_track].i_posf = -1;
663 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
665 if( tk->i_samplesize )
667 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
671 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
676 toread[i_track].i_toread *= -1;
680 b_stream = VLC_FALSE;
691 /* search for first chunk to be read */
692 for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_sys->i_track; i++ )
694 if( !toread[i].b_ok ||
695 AVI_GetDPTS( p_sys->track[i],
696 toread[i].i_toread ) <= -25 * 1000 )
701 if( toread[i].i_toread > 0 )
703 b_done = VLC_FALSE; /* not yet finished */
705 if( toread[i].i_posf > 0 )
707 if( i_pos == -1 || i_pos > toread[i_track].i_posf )
710 i_pos = toread[i].i_posf;
722 int i_loop_count = 0;
724 /* no valid index, we will parse directly the stream
725 * in case we fail we will disable all finished stream */
726 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
728 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
729 if( AVI_PacketNext( p_demux ) )
731 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
736 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
743 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
746 "cannot get packet header, track disabled" );
747 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
749 if( avi_pk.i_stream >= p_sys->i_track ||
750 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
752 if( AVI_PacketNext( p_demux ) )
755 "cannot skip packet, track disabled" );
756 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
759 /* Prevents from eating all the CPU with broken files.
760 * This value should be low enough so that it doesn't
761 * affect the reading speed too much. */
762 if( !(++i_loop_count % 1024) )
764 if( p_demux->b_die ) return -1;
767 if( !(i_loop_count % (1024 * 10)) )
769 "don't seem to find any data..." );
775 /* add this chunk to the index */
778 index.i_id = avi_pk.i_fourcc;
780 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
782 index.i_pos = avi_pk.i_pos;
783 index.i_length = avi_pk.i_size;
784 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
786 i_track = avi_pk.i_stream;
787 tk = p_sys->track[i_track];
788 /* do we will read this data ? */
789 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
795 if( AVI_PacketNext( p_demux ) )
798 "cannot skip packet, track disabled" );
799 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
808 stream_Seek( p_demux->s, i_pos );
811 /* Set the track to use */
812 tk = p_sys->track[i_track];
814 /* read thoses data */
815 if( tk->i_samplesize )
817 unsigned int i_toread;
819 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
821 if( tk->i_samplesize > 1 )
823 i_toread = tk->i_samplesize;
827 i_toread = __MAX( AVI_PTSToByte( tk, 20 * 1000 ), 100 );
830 i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
836 i_size = tk->p_index[tk->i_idxposc].i_length;
839 if( tk->i_idxposb == 0 )
841 i_size += 8; /* need to read and skip header */
844 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
846 msg_Warn( p_demux, "failled reading data" );
847 tk->b_activated = VLC_FALSE;
848 toread[i_track].b_ok = VLC_FALSE;
851 if( i_size % 2 ) /* read was padded on word boundary */
856 if( tk->i_idxposb == 0 )
858 p_frame->p_buffer += 8;
859 p_frame->i_buffer -= 8;
861 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
862 if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
864 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
868 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
872 if( tk->i_samplesize )
874 if( tk->i_idxposb == 0 )
878 toread[i_track].i_toread -= i_size;
879 tk->i_idxposb += i_size;
881 tk->p_index[tk->i_idxposc].i_length )
889 int i_length = tk->p_index[tk->i_idxposc].i_length;
892 if( tk->i_cat == AUDIO_ES )
894 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
896 toread[i_track].i_toread--;
899 if( tk->i_idxposc < tk->i_idxnb)
901 toread[i_track].i_posf =
902 tk->p_index[tk->i_idxposc].i_pos;
903 if( tk->i_idxposb > 0 )
905 toread[i_track].i_posf += 8 + tk->i_idxposb;
911 toread[i_track].i_posf = -1;
914 b_stream = VLC_TRUE; /* at least one read succeed */
916 if( tk->i_cat != VIDEO_ES )
917 p_frame->i_dts = p_frame->i_pts;
920 p_frame->i_dts = p_frame->i_pts;
924 //p_pes->i_rate = p_demux->stream.control.i_rate;
925 es_out_Send( p_demux->out, tk->p_es, p_frame );
930 /*****************************************************************************
931 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
932 *****************************************************************************
933 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
934 *****************************************************************************/
935 static int Demux_UnSeekable( demux_t *p_demux )
937 demux_sys_t *p_sys = p_demux->p_sys;
938 avi_track_t *p_stream_master = NULL;
939 unsigned int i_stream;
940 unsigned int i_packet;
942 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
944 /* *** find master stream for data packet skipping algo *** */
945 /* *** -> first video, if any, or first audio ES *** */
946 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
948 avi_track_t *tk = p_sys->track[i_stream];
951 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
953 if( b && tk->i_cat == VIDEO_ES )
955 p_stream_master = tk;
959 p_stream_master = tk;
963 if( !p_stream_master )
965 msg_Warn( p_demux, "no more stream selected" );
969 p_sys->i_time = AVI_GetPTS( p_stream_master );
971 for( i_packet = 0; i_packet < 10; i_packet++)
973 #define p_stream p_sys->track[avi_pk.i_stream]
977 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
982 if( avi_pk.i_stream >= p_sys->i_track ||
983 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
985 /* we haven't found an audio or video packet:
986 * - we have seek, found first next packet
987 * - others packets could be found, skip them
989 switch( avi_pk.i_fourcc )
994 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
998 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1000 return( 0 ); /* eof */
1003 "seems to have lost position, resync" );
1004 if( AVI_PacketSearch( p_demux ) )
1006 msg_Err( p_demux, "resync failed" );
1013 /* check for time */
1014 if( __ABS( AVI_GetPTS( p_stream ) -
1015 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1017 /* load it and send to decoder */
1019 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1023 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1025 if( avi_pk.i_cat != VIDEO_ES )
1026 p_frame->i_dts = p_frame->i_pts;
1029 p_frame->i_dts = p_frame->i_pts;
1033 //p_pes->i_rate = p_demux->stream.control.i_rate;
1034 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1038 if( AVI_PacketNext( p_demux ) )
1044 /* *** update stream time position *** */
1045 if( p_stream->i_samplesize )
1047 p_stream->i_idxposb += avi_pk.i_size;
1051 if( p_stream->i_cat == AUDIO_ES )
1053 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1055 p_stream->i_idxposc++;
1065 /*****************************************************************************
1066 * Seek: goto to i_date or i_percent
1067 *****************************************************************************/
1068 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1071 demux_sys_t *p_sys = p_demux->p_sys;
1072 unsigned int i_stream;
1073 msg_Dbg( p_demux, "seek requested: "I64Fd" secondes %d%%",
1074 i_date / 1000000, i_percent );
1076 if( p_sys->b_seekable )
1078 if( !p_sys->i_length )
1080 avi_track_t *p_stream;
1083 /* use i_percent to create a true i_date */
1084 msg_Warn( p_demux, "mmh, seeking without index at %d%%"
1085 " work only for interleaved file", i_percent );
1086 if( i_percent >= 100 )
1088 msg_Warn( p_demux, "cannot seek so far !" );
1089 return VLC_EGENERIC;
1091 i_percent = __MAX( i_percent, 0 );
1093 /* try to find chunk that is at i_percent or the file */
1094 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1095 p_sys->i_movi_begin );
1096 /* search first selected stream */
1097 for( i_stream = 0, p_stream = NULL;
1098 i_stream < p_sys->i_track; i_stream++ )
1100 p_stream = p_sys->track[i_stream];
1101 if( p_stream->b_activated )
1106 if( !p_stream || !p_stream->b_activated )
1108 msg_Warn( p_demux, "cannot find any selected stream" );
1109 return VLC_EGENERIC;
1112 /* be sure that the index exist */
1113 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1115 msg_Warn( p_demux, "cannot seek" );
1116 return VLC_EGENERIC;
1119 while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1120 p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1122 /* search after i_idxposc */
1123 if( AVI_StreamChunkSet( p_demux,
1124 i_stream, p_stream->i_idxposc + 1 ) )
1126 msg_Warn( p_demux, "cannot seek" );
1127 return VLC_EGENERIC;
1131 i_date = AVI_GetPTS( p_stream );
1132 /* TODO better support for i_samplesize != 0 */
1133 msg_Dbg( p_demux, "estimate date "I64Fd, i_date );
1136 #define p_stream p_sys->track[i_stream]
1138 /* seek for chunk based streams */
1139 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1141 if( p_stream->b_activated && !p_stream->i_samplesize )
1142 /* if( p_stream->b_activated ) */
1144 AVI_TrackSeek( p_demux, i_stream, i_date );
1145 p_sys->i_time = __MAX( AVI_GetPTS( p_stream ),
1152 i_date = p_sys->i_time;
1154 /* seek for bytes based streams */
1155 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1157 if( p_stream->b_activated && p_stream->i_samplesize )
1159 AVI_TrackSeek( p_demux, i_stream, i_date );
1160 /* p_sys->i_time = __MAX( AVI_GetPTS( p_stream ), p_sys->i_time );*/
1163 msg_Dbg( p_demux, "seek: "I64Fd" seconds", p_sys->i_time /1000000 );
1164 /* set true movie time */
1166 if( !p_sys->i_time )
1168 p_sys->i_time = i_date;
1175 msg_Err( p_demux, "shouldn't yet be executed" );
1176 return VLC_EGENERIC;
1180 /*****************************************************************************
1182 *****************************************************************************
1184 *****************************************************************************/
1185 static double ControlGetPosition( demux_t *p_demux )
1187 demux_sys_t *p_sys = p_demux->p_sys;
1189 if( p_sys->i_length > 0 )
1191 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1193 else if( stream_Size( p_demux->s ) > 0 )
1199 /* search the more advanced selected es */
1200 for( i = 0; i < p_sys->i_track; i++ )
1202 avi_track_t *tk = p_sys->track[i];
1203 if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1205 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1206 tk->p_index[tk->i_idxposc].i_length + 8;
1213 return (double)i64 / (double)stream_Size( p_demux->s );
1218 static int Control( demux_t *p_demux, int i_query, va_list args )
1220 demux_sys_t *p_sys = p_demux->p_sys;
1224 vlc_meta_t **pp_meta;
1228 case DEMUX_GET_POSITION:
1229 pf = (double*)va_arg( args, double * );
1230 *pf = ControlGetPosition( p_demux );
1232 case DEMUX_SET_POSITION:
1233 f = (double)va_arg( args, double );
1234 if( p_sys->b_seekable )
1236 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1237 return Seek( p_demux, i64, (int)(f * 100) );
1241 int64_t i_pos = stream_Size( p_demux->s ) * f;
1242 return stream_Seek( p_demux->s, i_pos );
1245 case DEMUX_GET_TIME:
1246 pi64 = (int64_t*)va_arg( args, int64_t * );
1247 *pi64 = p_sys->i_time;
1250 case DEMUX_SET_TIME:
1254 i64 = (int64_t)va_arg( args, int64_t );
1255 if( p_sys->i_length > 0 )
1257 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1259 else if( p_sys->i_time > 0 )
1261 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1262 (double)i64 / (double)p_sys->i_time );
1264 return Seek( p_demux, i64, i_percent );
1266 case DEMUX_GET_LENGTH:
1267 pi64 = (int64_t*)va_arg( args, int64_t * );
1268 *pi64 = p_sys->i_length * (mtime_t)1000000;
1272 pf = (double*)va_arg( args, double * );
1274 for( i = 0; i < (int)p_sys->i_track; i++ )
1276 avi_track_t *tk = p_sys->track[i];
1277 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1279 *pf = (float)tk->i_rate / (float)tk->i_scale;
1284 case DEMUX_GET_META:
1285 pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
1286 *pp_meta = vlc_meta_Duplicate( p_sys->meta );
1290 return VLC_EGENERIC;
1294 /*****************************************************************************
1295 * Function to convert pts to chunk or byte
1296 *****************************************************************************/
1298 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1300 return (mtime_t)((int64_t)i_pts *
1301 (int64_t)tk->i_rate /
1302 (int64_t)tk->i_scale /
1305 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1307 return (mtime_t)((int64_t)i_pts *
1308 (int64_t)tk->i_rate /
1309 (int64_t)tk->i_scale /
1311 (int64_t)tk->i_samplesize );
1314 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1318 i_dpts = (mtime_t)( (int64_t)1000000 *
1320 (int64_t)tk->i_scale /
1321 (int64_t)tk->i_rate );
1323 if( tk->i_samplesize )
1325 return i_dpts / tk->i_samplesize;
1330 static mtime_t AVI_GetPTS( avi_track_t *tk )
1332 if( tk->i_samplesize )
1334 int64_t i_count = 0;
1336 /* we need a valid entry we will emulate one */
1337 if( tk->i_idxposc == tk->i_idxnb )
1341 /* use the last entry */
1342 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1343 + tk->p_index[tk->i_idxnb - 1].i_length;
1348 i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1350 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1354 if( tk->i_cat == AUDIO_ES )
1356 return AVI_GetDPTS( tk, tk->i_blockno );
1360 return AVI_GetDPTS( tk, tk->i_idxposc );
1365 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1367 demux_sys_t *p_sys = p_demux->p_sys;
1368 avi_packet_t avi_pk;
1369 int i_loop_count = 0;
1371 /* find first chunk of i_stream that isn't in index */
1373 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1375 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1376 if( AVI_PacketNext( p_demux ) )
1378 return VLC_EGENERIC;
1383 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1388 if( p_demux->b_die ) return VLC_EGENERIC;
1390 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1392 msg_Warn( p_demux, "cannot get packet header" );
1393 return VLC_EGENERIC;
1395 if( avi_pk.i_stream >= p_sys->i_track ||
1396 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1398 if( AVI_PacketNext( p_demux ) )
1400 return VLC_EGENERIC;
1403 /* Prevents from eating all the CPU with broken files.
1404 * This value should be low enough so that it doesn't
1405 * affect the reading speed too much. */
1406 if( !(++i_loop_count % 1024) )
1408 if( p_demux->b_die ) return VLC_EGENERIC;
1411 if( !(i_loop_count % (1024 * 10)) )
1412 msg_Warn( p_demux, "don't seem to find any data..." );
1417 /* add this chunk to the index */
1420 index.i_id = avi_pk.i_fourcc;
1422 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1424 index.i_pos = avi_pk.i_pos;
1425 index.i_length = avi_pk.i_size;
1426 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1428 if( avi_pk.i_stream == i_stream )
1433 if( AVI_PacketNext( p_demux ) )
1435 return VLC_EGENERIC;
1442 /* be sure that i_ck will be a valid index entry */
1443 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1446 demux_sys_t *p_sys = p_demux->p_sys;
1447 avi_track_t *p_stream = p_sys->track[i_stream];
1449 p_stream->i_idxposc = i_ck;
1450 p_stream->i_idxposb = 0;
1452 if( i_ck >= p_stream->i_idxnb )
1454 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1457 p_stream->i_idxposc++;
1458 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1460 return VLC_EGENERIC;
1463 } while( p_stream->i_idxposc < i_ck );
1470 /* XXX FIXME up to now, we assume that all chunk are one after one */
1471 static int AVI_StreamBytesSet( demux_t *p_demux,
1472 unsigned int i_stream,
1475 demux_sys_t *p_sys = p_demux->p_sys;
1476 avi_track_t *p_stream = p_sys->track[i_stream];
1478 if( ( p_stream->i_idxnb > 0 )
1479 &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1480 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1482 /* index is valid to find the ck */
1483 /* uses dichototmie to be fast enougth */
1484 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1485 int i_idxmax = p_stream->i_idxnb;
1489 if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1491 i_idxmax = i_idxposc ;
1492 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1496 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1497 p_stream->p_index[i_idxposc].i_length <= i_byte)
1499 i_idxmin = i_idxposc ;
1500 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1504 p_stream->i_idxposc = i_idxposc;
1505 p_stream->i_idxposb = i_byte -
1506 p_stream->p_index[i_idxposc].i_lengthtotal;
1515 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1516 p_stream->i_idxposb = 0;
1519 p_stream->i_idxposc++;
1520 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1522 return VLC_EGENERIC;
1525 } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1526 p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1528 p_stream->i_idxposb = i_byte -
1529 p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1534 static int AVI_TrackSeek( demux_t *p_demux,
1538 demux_sys_t *p_sys = p_demux->p_sys;
1539 avi_track_t *tk = p_sys->track[i_stream];
1541 #define p_stream p_sys->track[i_stream]
1544 i_oldpts = AVI_GetPTS( p_stream );
1546 if( !p_stream->i_samplesize )
1548 if( AVI_StreamChunkSet( p_demux,
1550 AVI_PTSToChunk( p_stream, i_date ) ) )
1552 return VLC_EGENERIC;
1555 if( p_stream->i_cat == AUDIO_ES )
1559 for( i = 0; i < tk->i_idxposc; i++ )
1561 if( tk->i_blocksize > 0 )
1563 tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1573 "old:"I64Fd" %s new "I64Fd,
1575 i_oldpts > i_date ? ">" : "<",
1578 if( p_stream->i_cat == VIDEO_ES )
1580 /* search key frame */
1581 if( i_date < i_oldpts )
1583 while( p_stream->i_idxposc > 0 &&
1584 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1587 if( AVI_StreamChunkSet( p_demux,
1589 p_stream->i_idxposc - 1 ) )
1591 return VLC_EGENERIC;
1597 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1598 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1601 if( AVI_StreamChunkSet( p_demux,
1603 p_stream->i_idxposc + 1 ) )
1605 return VLC_EGENERIC;
1613 if( AVI_StreamBytesSet( p_demux,
1615 AVI_PTSToByte( p_stream, i_date ) ) )
1617 return VLC_EGENERIC;
1624 /****************************************************************************
1625 * Return VLC_TRUE if it's a key frame
1626 ****************************************************************************/
1627 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1633 * startcode: 0x00000100 32bits
1634 * framenumber ? 5bits
1635 * piture type 0(I),1(P) 2bits
1637 if( GetDWBE( p_byte ) != 0x00000100 )
1639 /* it's not an msmpegv1 stream, strange...*/
1640 return AVIIF_KEYFRAME;
1642 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1645 case FOURCC_DIV3: /* wmv1 also */
1647 * picture type 0(I),1(P) 2bits
1649 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1651 /* we should find first occurrence of 0x000001b6 (32bits)
1652 * startcode: 0x000001b6 32bits
1653 * piture type 0(I),1(P) 2bits
1655 if( GetDWBE( p_byte ) != 0x000001b6 )
1657 /* not true , need to find the first VOP header */
1658 return AVIIF_KEYFRAME;
1660 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1663 /* I can't do it, so say yes */
1664 return AVIIF_KEYFRAME;
1668 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1673 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1677 /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1681 return VLC_FOURCC('m','r','l','e');
1730 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1734 /****************************************************************************
1736 ****************************************************************************/
1737 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1738 int *pi_number, int *pi_type )
1740 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1743 c1 = ((uint8_t *)&i_id)[0];
1744 c2 = ((uint8_t *)&i_id)[1];
1746 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1748 SET_PTR( pi_number, 100 ); /* > max stream number */
1749 SET_PTR( pi_type, UNKNOWN_ES );
1753 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1754 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1757 SET_PTR( pi_type, AUDIO_ES );
1761 SET_PTR( pi_type, VIDEO_ES );
1764 SET_PTR( pi_type, UNKNOWN_ES );
1771 /****************************************************************************
1773 ****************************************************************************/
1774 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1778 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1780 return VLC_EGENERIC;
1782 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1783 p_pk->i_size = GetDWLE( p_peek + 4 );
1784 p_pk->i_pos = stream_Tell( p_demux->s );
1785 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1787 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1788 p_peek[10], p_peek[11] );
1795 memcpy( p_pk->i_peek, p_peek + 8, 8 );
1797 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1801 static int AVI_PacketNext( demux_t *p_demux )
1803 avi_packet_t avi_ck;
1806 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1808 return VLC_EGENERIC;
1811 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
1812 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
1816 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
1817 avi_ck.i_type == AVIFOURCC_AVIX )
1823 i_skip = __EVEN( avi_ck.i_size ) + 8;
1826 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
1828 return VLC_EGENERIC;
1832 static int AVI_PacketRead( demux_t *p_demux,
1834 block_t **pp_frame )
1838 i_size = __EVEN( p_pk->i_size + 8 );
1840 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
1842 return VLC_EGENERIC;
1844 (*pp_frame)->p_buffer += 8;
1845 (*pp_frame)->i_buffer -= 8;
1847 if( i_size != p_pk->i_size + 8 )
1849 (*pp_frame)->i_buffer--;
1855 static int AVI_PacketSearch( demux_t *p_demux )
1857 demux_sys_t *p_sys = p_demux->p_sys;
1858 avi_packet_t avi_pk;
1863 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
1865 return VLC_EGENERIC;
1867 AVI_PacketGetHeader( p_demux, &avi_pk );
1868 if( avi_pk.i_stream < p_sys->i_track &&
1869 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
1873 switch( avi_pk.i_fourcc )
1875 case AVIFOURCC_JUNK:
1876 case AVIFOURCC_LIST:
1877 case AVIFOURCC_RIFF:
1878 case AVIFOURCC_idx1:
1882 /* Prevents from eating all the CPU with broken files.
1883 * This value should be low enough so that it doesn't affect the
1884 * reading speed too much (not that we care much anyway because
1885 * this code is called only on broken files). */
1886 if( !(++i_count % 1024) )
1888 if( p_demux->b_die ) return VLC_EGENERIC;
1891 if( !(i_count % (1024 * 10)) )
1892 msg_Warn( p_demux, "trying to resync..." );
1897 /****************************************************************************
1899 ****************************************************************************/
1900 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
1902 avi_entry_t *p_index)
1904 avi_track_t *tk = p_sys->track[i_stream];
1906 /* Update i_movi_lastchunk_pos */
1907 if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
1909 p_sys->i_movi_lastchunk_pos = p_index->i_pos;
1913 if( tk->i_idxnb >= tk->i_idxmax )
1915 tk->i_idxmax += 16384;
1916 tk->p_index = realloc( tk->p_index,
1917 tk->i_idxmax * sizeof( avi_entry_t ) );
1918 if( tk->p_index == NULL )
1923 /* calculate cumulate length */
1924 if( tk->i_idxnb > 0 )
1926 p_index->i_lengthtotal =
1927 tk->p_index[tk->i_idxnb - 1].i_length +
1928 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
1932 p_index->i_lengthtotal = 0;
1935 tk->p_index[tk->i_idxnb++] = *p_index;
1938 static int AVI_IndexLoad_idx1( demux_t *p_demux )
1940 demux_sys_t *p_sys = p_demux->p_sys;
1942 avi_chunk_list_t *p_riff;
1943 avi_chunk_list_t *p_movi;
1944 avi_chunk_idx1_t *p_idx1;
1946 unsigned int i_stream;
1947 unsigned int i_index;
1951 vlc_bool_t b_keyset[100];
1953 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
1954 p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
1955 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
1959 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
1960 return VLC_EGENERIC;
1963 /* *** calculate offset *** */
1964 /* Well, avi is __SHIT__ so test more than one entry
1965 * (needed for some avi files) */
1967 for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
1969 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
1971 i_offset = p_movi->i_chunk_pos + 8;
1976 /* Reset b_keyset */
1977 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1978 b_keyset[i_stream] = VLC_FALSE;
1980 for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
1984 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
1987 if( i_stream < p_sys->i_track &&
1988 i_cat == p_sys->track[i_stream]->i_cat )
1991 index.i_id = p_idx1->entry[i_index].i_fourcc;
1993 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
1994 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
1995 index.i_length = p_idx1->entry[i_index].i_length;
1996 AVI_IndexAddEntry( p_sys, i_stream, &index );
1998 if( index.i_flags&AVIIF_KEYFRAME )
1999 b_keyset[i_stream] = VLC_TRUE;
2003 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2005 if( !b_keyset[i_stream] )
2007 avi_track_t *tk = p_sys->track[i_stream];
2009 msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2010 for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2011 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2017 static void __Parse_indx( demux_t *p_demux,
2019 avi_chunk_indx_t *p_indx )
2021 demux_sys_t *p_sys = p_demux->p_sys;
2025 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2026 if( p_indx->i_indexsubtype == 0 )
2028 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2030 index.i_id = p_indx->i_id;
2031 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2032 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2033 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2035 AVI_IndexAddEntry( p_sys, i_stream, &index );
2038 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2040 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2042 index.i_id = p_indx->i_id;
2043 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2044 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2045 index.i_length = p_indx->idx.field[i].i_size;
2047 AVI_IndexAddEntry( p_sys, i_stream, &index );
2052 msg_Warn( p_demux, "unknow subtype index(0x%x)", p_indx->i_indexsubtype );
2056 static void AVI_IndexLoad_indx( demux_t *p_demux )
2058 demux_sys_t *p_sys = p_demux->p_sys;
2059 unsigned int i_stream;
2062 avi_chunk_list_t *p_riff;
2063 avi_chunk_list_t *p_hdrl;
2065 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2066 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2068 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2070 avi_chunk_list_t *p_strl;
2071 avi_chunk_indx_t *p_indx;
2073 #define p_stream p_sys->track[i_stream]
2074 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2075 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2079 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML file?)" );
2083 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2085 __Parse_indx( p_demux, i_stream, p_indx );
2087 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2089 avi_chunk_indx_t ck_sub;
2090 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2092 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2093 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2097 __Parse_indx( p_demux, i_stream, &ck_sub );
2102 msg_Warn( p_demux, "unknow type index(0x%x)", p_indx->i_indextype );
2108 static void AVI_IndexLoad( demux_t *p_demux )
2110 demux_sys_t *p_sys = p_demux->p_sys;
2111 unsigned int i_stream;
2113 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2115 p_sys->track[i_stream]->i_idxnb = 0;
2116 p_sys->track[i_stream]->i_idxmax = 0;
2117 p_sys->track[i_stream]->p_index = NULL;
2122 AVI_IndexLoad_indx( p_demux );
2124 else if( AVI_IndexLoad_idx1( p_demux ) )
2126 /* try indx if idx1 failed as some "normal" file have indx too */
2127 AVI_IndexLoad_indx( p_demux );
2130 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2132 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2133 i_stream, p_sys->track[i_stream]->i_idxnb );
2137 static void AVI_IndexCreate( demux_t *p_demux )
2139 demux_sys_t *p_sys = p_demux->p_sys;
2141 avi_chunk_list_t *p_riff;
2142 avi_chunk_list_t *p_movi;
2144 unsigned int i_stream;
2147 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2148 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2152 msg_Err( p_demux, "cannot find p_movi" );
2156 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2158 p_sys->track[i_stream]->i_idxnb = 0;
2159 p_sys->track[i_stream]->i_idxmax = 0;
2160 p_sys->track[i_stream]->p_index = NULL;
2162 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2163 stream_Size( p_demux->s ) );
2165 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2166 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2171 if( p_demux->b_die )
2176 if( AVI_PacketGetHeader( p_demux, &pk ) )
2180 if( pk.i_stream < p_sys->i_track &&
2181 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2184 index.i_id = pk.i_fourcc;
2186 AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2187 index.i_pos = pk.i_pos;
2188 index.i_length = pk.i_size;
2189 AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2193 switch( pk.i_fourcc )
2195 case AVIFOURCC_idx1:
2198 avi_chunk_list_t *p_sysx;
2199 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2200 AVIFOURCC_RIFF, 1 );
2202 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2203 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24))
2210 case AVIFOURCC_RIFF:
2211 msg_Dbg( p_demux, "new RIFF chunk found" );
2213 case AVIFOURCC_JUNK:
2216 msg_Warn( p_demux, "need resync, probably broken avi" );
2217 if( AVI_PacketSearch( p_demux ) )
2219 msg_Warn( p_demux, "lost sync, abord index creation" );
2225 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2226 AVI_PacketNext( p_demux ) )
2233 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2236 "stream[%d] creating %d index entries",
2238 p_sys->track[i_stream]->i_idxnb );
2242 /*****************************************************************************
2244 *****************************************************************************/
2245 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2247 demux_sys_t *p_sys = p_demux->p_sys;
2249 int b_end = VLC_TRUE;
2251 for( i = 0; i < p_sys->i_track; i++ )
2253 avi_track_t *tk = p_sys->track[i];
2254 if( tk->i_idxposc >= tk->i_idxnb )
2256 tk->b_activated = VLC_FALSE;
2257 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, VLC_FALSE );
2267 /****************************************************************************
2268 * AVI_MovieGetLength give max streams length in second
2269 ****************************************************************************/
2270 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2272 demux_sys_t *p_sys = p_demux->p_sys;
2273 mtime_t i_maxlength = 0;
2276 for( i = 0; i < p_sys->i_track; i++ )
2278 avi_track_t *tk = p_sys->track[i];
2281 /* fix length for each stream */
2282 if( tk->i_idxnb < 1 || !tk->p_index )
2287 if( tk->i_samplesize )
2289 i_length = AVI_GetDPTS( tk,
2290 tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2291 tk->p_index[tk->i_idxnb-1].i_length );
2295 i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2297 i_length /= (mtime_t)1000000; /* in seconds */
2300 "stream[%d] length:"I64Fd" (based on index)",
2303 i_maxlength = __MAX( i_maxlength, i_length );