1 /*****************************************************************************
2 * avi.c : AVI file Stream input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001-2004 the VideoLAN team
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
28 #include <vlc_demux.h>
30 #include <vlc_interface.h>
33 #include <vlc_codecs.h>
34 #include <vlc_charset.h>
38 /*****************************************************************************
40 *****************************************************************************/
42 #define INTERLEAVE_TEXT N_("Force interleaved method" )
43 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method." )
45 #define INDEX_TEXT N_("Force index creation")
46 #define INDEX_LONGTEXT N_( \
47 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
48 "or incomplete (not seekable)." )
50 static int Open ( vlc_object_t * );
51 static void Close( vlc_object_t * );
53 static int pi_index[] = {0,1,2};
55 static const char *ppsz_indexes[] = { N_("Ask"), N_("Always fix"),
59 set_shortname( "AVI" );
60 set_description( _("AVI demuxer") );
61 set_capability( "demux2", 212 );
62 set_category( CAT_INPUT );
63 set_subcategory( SUBCAT_INPUT_DEMUX );
65 add_bool( "avi-interleaved", 0, NULL,
66 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, VLC_TRUE );
67 add_integer( "avi-index", 0, NULL,
68 INDEX_TEXT, INDEX_LONGTEXT, VLC_FALSE );
69 change_integer_list( pi_index, ppsz_indexes, 0 );
71 set_callbacks( Open, Close );
74 /*****************************************************************************
76 *****************************************************************************/
77 static int Control ( demux_t *, int, va_list );
78 static int Seek ( demux_t *, mtime_t, int );
79 static int Demux_Seekable ( demux_t * );
80 static int Demux_UnSeekable( demux_t * );
82 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
86 vlc_fourcc_t i_fourcc;
89 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
91 uint8_t i_peek[8]; /* first 8 bytes */
93 unsigned int i_stream;
104 uint32_t i_lengthtotal;
110 vlc_bool_t b_activated;
112 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
113 vlc_fourcc_t i_codec;
122 avi_entry_t *p_index;
123 unsigned int i_idxnb;
124 unsigned int i_idxmax;
126 unsigned int i_idxposc; /* numero of chunk */
127 unsigned int i_idxposb; /* byte in the current chunk */
129 /* For VBR audio only */
130 unsigned int i_blockno;
131 unsigned int i_blocksize;
133 /* For muxed streams */
134 stream_t *p_out_muxed;
142 vlc_bool_t b_seekable;
149 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
151 /* number of streams and information */
152 unsigned int i_track;
163 static inline off_t __EVEN( off_t i )
165 return (i & 1) ? i + 1 : i;
168 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
169 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
170 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
171 static mtime_t AVI_GetPTS ( avi_track_t * );
174 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
175 static int AVI_StreamChunkSet ( demux_t *,
176 unsigned int i_stream, unsigned int i_ck );
177 static int AVI_StreamBytesSet ( demux_t *,
178 unsigned int i_stream, off_t i_byte );
180 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
181 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
183 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
184 static int AVI_PacketNext ( demux_t * );
185 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
186 static int AVI_PacketSearch ( demux_t * );
188 static void AVI_IndexLoad ( demux_t * );
189 static void AVI_IndexCreate ( demux_t * );
190 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
192 static mtime_t AVI_MovieGetLength( demux_t * );
194 /*****************************************************************************
196 *****************************************************************************/
197 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
198 static int AVI_TrackStopFinishedStreams( demux_t *);
201 - For VBR mp3 stream:
202 count blocks by rounded-up chunksizes instead of chunks
203 we need full emulation of dshow avi demuxer bugs :(
204 fixes silly nandub-style a-v delaying in avi with vbr mp3...
205 (from mplayer 2002/08/02)
209 /*****************************************************************************
210 * Open: check file and initializes AVI structures
211 *****************************************************************************/
212 static int Open( vlc_object_t * p_this )
214 demux_t *p_demux = (demux_t *)p_this;
217 vlc_bool_t b_index = VLC_FALSE;
221 avi_chunk_list_t *p_riff = (avi_chunk_list_t*)&ck_riff;
222 avi_chunk_list_t *p_hdrl, *p_movi;
223 avi_chunk_avih_t *p_avih;
225 unsigned int i_track;
226 unsigned int i, i_peeker;
228 const uint8_t *p_peek;
230 /* Is it an avi file ? */
231 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
233 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
235 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
237 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
241 if( i_peeker == 188 )
246 /* Initialize input structures. */
247 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
248 memset( p_sys, 0, sizeof( demux_sys_t ) );
251 p_sys->i_movi_lastchunk_pos = 0;
252 p_sys->b_odml = VLC_FALSE;
253 p_sys->b_muxed = VLC_FALSE;
258 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
260 p_demux->pf_control = Control;
261 p_demux->pf_demux = Demux_Seekable;
263 /* For unseekable stream, automaticaly use Demux_UnSeekable */
264 if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
266 p_demux->pf_demux = Demux_UnSeekable;
271 stream_Read( p_demux->s, NULL, i_peeker );
274 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
276 msg_Err( p_demux, "avi module discarded (invalid file)" );
280 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
282 unsigned int i_count =
283 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
285 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
286 for( i = 1; i < i_count; i++ )
288 avi_chunk_list_t *p_sysx;
290 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
291 if( p_sysx->i_type == AVIFOURCC_AVIX )
293 msg_Warn( p_demux, "detected OpenDML file" );
294 p_sys->b_odml = VLC_TRUE;
300 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
301 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
302 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
304 if( !p_hdrl || !p_movi )
306 msg_Err( p_demux, "avi module discarded (invalid file)" );
310 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
312 msg_Err( p_demux, "cannot find avih chunk" );
315 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
316 if( p_avih->i_streams != i_track )
319 "found %d stream but %d are declared",
320 i_track, p_avih->i_streams );
324 msg_Err( p_demux, "no stream defined!" );
328 /* print information on streams */
329 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
331 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
332 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
333 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
334 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
335 if( ( p_sys->meta = vlc_meta_New() ) )
338 sprintf( buffer, "%s%s%s%s",
339 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
340 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
341 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
342 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
343 vlc_meta_SetSetting( p_sys->meta, buffer );
346 /* now read info on each stream and create ES */
347 for( i = 0 ; i < i_track; i++ )
349 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
350 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
351 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
352 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
353 avi_chunk_strf_auds_t *p_auds = NULL;
354 avi_chunk_strf_vids_t *p_vids = NULL;
357 tk->b_activated = VLC_FALSE;
368 tk->p_out_muxed = NULL;
370 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
371 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
373 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
375 msg_Warn( p_demux, "stream[%d] incomplete", i );
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 );
385 switch( p_strh->i_type )
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 if( ( tk->i_blocksize = p_auds->p_wf->nBlockAlign ) == 0 )
393 if( p_auds->p_wf->wFormatTag == 1 )
395 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
402 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
404 fmt.audio.i_channels = p_auds->p_wf->nChannels;
405 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
406 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
407 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
408 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
409 fmt.b_packetized = !tk->i_blocksize;
410 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
411 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
412 fmt.p_extra = &p_auds->p_wf[1];
413 msg_Dbg( p_demux, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
414 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
415 p_auds->p_wf->nSamplesPerSec, p_auds->p_wf->wBitsPerSample);
418 case( AVIFOURCC_vids ):
419 tk->i_cat = VIDEO_ES;
420 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
421 p_vids->p_bih->biCompression );
422 if( p_vids->p_bih->biCompression == 0x00 )
424 switch( p_vids->p_bih->biBitCount )
427 tk->i_codec = VLC_FOURCC('R','V','3','2');
430 tk->i_codec = VLC_FOURCC('R','V','2','4');
433 /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
436 tk->i_codec = VLC_FOURCC('R','V','1','5');
439 tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
442 tk->i_codec = VLC_FOURCC('Y','8','0','0');
445 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
447 if( p_vids->p_bih->biBitCount == 24 )
449 /* This is in BGR format */
450 fmt.video.i_bmask = 0x00ff0000;
451 fmt.video.i_gmask = 0x0000ff00;
452 fmt.video.i_rmask = 0x000000ff;
457 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
458 if( tk->i_codec == FOURCC_mp4v &&
459 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
461 fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
464 tk->i_samplesize = 0;
465 fmt.video.i_width = p_vids->p_bih->biWidth;
466 fmt.video.i_height = p_vids->p_bih->biHeight;
467 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
468 fmt.video.i_frame_rate = tk->i_rate;
469 fmt.video.i_frame_rate_base = tk->i_scale;
471 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
472 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
473 fmt.p_extra = &p_vids->p_bih[1];
474 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
475 i, (char*)&p_vids->p_bih->biCompression,
476 p_vids->p_bih->biWidth,
477 p_vids->p_bih->biHeight,
478 p_vids->p_bih->biBitCount,
479 (float)tk->i_rate/(float)tk->i_scale );
481 if( p_vids->p_bih->biCompression == 0x00 )
483 /* RGB DIB are coded from bottom to top */
485 (unsigned int)(-(int)p_vids->p_bih->biHeight);
488 /* Extract palette from extradata if bpp <= 8
489 * (assumes that extradata contains only palette but appears
490 * to be true for all palettized codecs we support) */
491 if( fmt.i_extra && fmt.video.i_bits_per_pixel <= 8 &&
492 fmt.video.i_bits_per_pixel > 0 )
496 fmt.video.p_palette = calloc( sizeof(video_palette_t), 1 );
497 fmt.video.p_palette->i_entries = 1;
499 /* Apparently this is necessary. But why ? */
501 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
502 for( i = 0; i < __MIN(fmt.i_extra/4, 256); i++ )
504 ((uint32_t *)&fmt.video.p_palette->palette[0][0])[i] =
505 GetDWLE((uint32_t*)fmt.p_extra + i);
510 case( AVIFOURCC_txts):
512 tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
513 msg_Dbg( p_demux, "stream[%d] subtitles", i );
514 es_format_Init( &fmt, SPU_ES, tk->i_codec );
517 case( AVIFOURCC_iavs):
518 case( AVIFOURCC_ivas):
519 p_sys->b_muxed = VLC_TRUE;
520 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
521 if( p_strh->i_handler == FOURCC_dvsd ||
522 p_strh->i_handler == FOURCC_dvhd ||
523 p_strh->i_handler == FOURCC_dvsl )
525 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
526 if( !tk->p_out_muxed )
527 msg_Err( p_demux, "could not load the DV parser" );
533 case( AVIFOURCC_mids):
534 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
537 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
543 /* The charset of p_strn is undefined */
544 EnsureUTF8( p_strn->p_str );
545 fmt.psz_description = strdup( p_strn->p_str );
547 if( tk->p_out_muxed == NULL )
548 tk->p_es = es_out_Add( p_demux->out, &fmt );
549 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
552 if( p_sys->i_track <= 0 )
554 msg_Err( p_demux, "no valid track" );
558 i_do_index = config_GetInt( p_demux, "avi-index" );
559 if( i_do_index == 1 ) /* Always fix */
562 if( p_sys->b_seekable )
564 AVI_IndexCreate( p_demux );
568 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
569 AVI_IndexLoad( p_demux );
574 AVI_IndexLoad( p_demux );
577 /* *** movie length in sec *** */
578 p_sys->i_length = AVI_MovieGetLength( p_demux );
579 if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
580 (mtime_t)p_avih->i_microsecperframe /
583 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
584 "axproximative or will have strange behaviour" );
585 if( i_do_index == 0 && !b_index )
588 i_create = intf_UserYesNo( p_demux, _("AVI Index") ,
589 _( "This AVI file is broken. Seeking will not "
590 "work correctly.\nDo you want to "
591 "try to repair it?\n\nThis might take a long time." ),
592 _( "Repair" ), _( "Don't repair" ), _( "Cancel") );
593 if( i_create == DIALOG_OK_YES )
596 msg_Dbg( p_demux, "Fixing AVI index" );
599 else if( i_create == DIALOG_CANCELLED )
602 vlc_object_kill( p_demux->p_parent );
608 /* fix some BeOS MediaKit generated file */
609 for( i = 0 ; i < p_sys->i_track; i++ )
611 avi_track_t *tk = p_sys->track[i];
612 avi_chunk_list_t *p_strl;
613 avi_chunk_strh_t *p_strh;
614 avi_chunk_strf_auds_t *p_auds;
616 if( tk->i_cat != AUDIO_ES )
620 if( tk->i_idxnb < 1 ||
622 tk->i_samplesize != 0 )
626 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
627 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
628 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
630 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
631 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
633 int64_t i_track_length =
634 tk->p_index[tk->i_idxnb-1].i_length +
635 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
636 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
637 (mtime_t)p_avih->i_microsecperframe;
641 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
644 tk->i_samplesize = 1;
645 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
646 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
650 if( p_sys->b_seekable )
652 /* we have read all chunk so go back to movi */
653 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
655 /* Skip movi header */
656 stream_Read( p_demux->s, NULL, 12 );
658 p_sys->i_movi_begin = p_movi->i_chunk_pos;
664 vlc_meta_Delete( p_sys->meta );
666 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
671 /*****************************************************************************
672 * Close: frees unused data
673 *****************************************************************************/
674 static void Close ( vlc_object_t * p_this )
676 demux_t * p_demux = (demux_t *)p_this;
678 demux_sys_t *p_sys = p_demux->p_sys ;
680 for( i = 0; i < p_sys->i_track; i++ )
682 if( p_sys->track[i] )
684 if( p_sys->track[i]->p_out_muxed )
685 stream_DemuxDelete( p_sys->track[i]->p_out_muxed );
686 FREENULL( p_sys->track[i]->p_index );
687 free( p_sys->track[i] );
690 FREENULL( p_sys->track );
691 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
692 vlc_meta_Delete( p_sys->meta );
697 /*****************************************************************************
698 * Demux_Seekable: reads and demuxes data packets for stream seekable
699 *****************************************************************************
700 * AVIDemux: reads and demuxes data packets
701 *****************************************************************************
702 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
703 *****************************************************************************/
710 off_t i_posf; /* where we will read :
711 if i_idxposb == 0 : begining of chunk (+8 to acces data)
712 else : point on data directly */
713 } avi_track_toread_t;
715 static int Demux_Seekable( demux_t *p_demux )
717 demux_sys_t *p_sys = p_demux->p_sys;
719 unsigned int i_track_count = 0;
720 unsigned int i_track;
722 /* cannot be more than 100 stream (dcXX or wbXX) */
723 avi_track_toread_t toread[100];
726 /* detect new selected/unselected streams */
727 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
729 avi_track_t *tk = p_sys->track[i_track];
732 if( p_sys->b_muxed && tk->p_out_muxed )
735 tk->b_activated = VLC_TRUE;
739 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
740 if( b && !tk->b_activated )
742 if( p_sys->b_seekable)
744 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
746 tk->b_activated = VLC_TRUE;
748 else if( !b && tk->b_activated )
750 tk->b_activated = VLC_FALSE;
758 if( i_track_count <= 0 )
760 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
762 p_sys->i_time += 25*1000; /* read 25ms */
765 if( p_sys->i_time >= i_length )
769 msg_Warn( p_demux, "no track selected, exiting..." );
773 /* wait for the good time */
774 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
775 p_sys->i_time += 25*1000; /* read 25ms */
778 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
780 avi_track_t *tk = p_sys->track[i_track];
783 toread[i_track].b_ok = tk->b_activated;
784 if( tk->i_idxposc < tk->i_idxnb )
786 toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
787 if( tk->i_idxposb > 0 )
789 toread[i_track].i_posf += 8 + tk->i_idxposb;
794 toread[i_track].i_posf = -1;
797 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
799 if( tk->i_samplesize )
801 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
805 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
810 toread[i_track].i_toread *= -1;
814 b_stream = VLC_FALSE;
825 /* search for first chunk to be read */
826 for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_sys->i_track; i++ )
828 if( !toread[i].b_ok ||
829 AVI_GetDPTS( p_sys->track[i],
830 toread[i].i_toread ) <= -25 * 1000 )
835 if( toread[i].i_toread > 0 )
837 b_done = VLC_FALSE; /* not yet finished */
839 if( toread[i].i_posf > 0 )
841 if( i_pos == -1 || i_pos > toread[i].i_posf )
844 i_pos = toread[i].i_posf;
856 int i_loop_count = 0;
858 /* no valid index, we will parse directly the stream
859 * in case we fail we will disable all finished stream */
860 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
862 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
863 if( AVI_PacketNext( p_demux ) )
865 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
870 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
877 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
880 "cannot get packet header, track disabled" );
881 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
883 if( avi_pk.i_stream >= p_sys->i_track ||
884 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
886 if( AVI_PacketNext( p_demux ) )
889 "cannot skip packet, track disabled" );
890 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
893 /* Prevents from eating all the CPU with broken files.
894 * This value should be low enough so that it doesn't
895 * affect the reading speed too much. */
896 if( !(++i_loop_count % 1024) )
898 if( p_demux->b_die ) return -1;
901 if( !(i_loop_count % (1024 * 10)) )
903 "don't seem to find any data..." );
909 /* add this chunk to the index */
912 index.i_id = avi_pk.i_fourcc;
914 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
916 index.i_pos = avi_pk.i_pos;
917 index.i_length = avi_pk.i_size;
918 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
920 i_track = avi_pk.i_stream;
921 tk = p_sys->track[i_track];
922 /* do we will read this data ? */
923 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
929 if( AVI_PacketNext( p_demux ) )
932 "cannot skip packet, track disabled" );
933 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
942 stream_Seek( p_demux->s, i_pos );
945 /* Set the track to use */
946 tk = p_sys->track[i_track];
948 /* read thoses data */
949 if( tk->i_samplesize )
951 unsigned int i_toread;
953 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
955 if( tk->i_samplesize > 1 )
957 i_toread = tk->i_samplesize;
961 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
962 i_toread = __MAX( i_toread, 100 );
965 i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
971 i_size = tk->p_index[tk->i_idxposc].i_length;
974 if( tk->i_idxposb == 0 )
976 i_size += 8; /* need to read and skip header */
979 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
981 msg_Warn( p_demux, "failed reading data" );
982 tk->b_activated = VLC_FALSE;
983 toread[i_track].b_ok = VLC_FALSE;
986 if( i_size % 2 ) /* read was padded on word boundary */
991 if( tk->i_idxposb == 0 )
993 p_frame->p_buffer += 8;
994 p_frame->i_buffer -= 8;
996 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
997 if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
999 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1003 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1007 if( tk->i_samplesize )
1009 if( tk->i_idxposb == 0 )
1013 toread[i_track].i_toread -= i_size;
1014 tk->i_idxposb += i_size;
1015 if( tk->i_idxposb >=
1016 tk->p_index[tk->i_idxposc].i_length )
1024 int i_length = tk->p_index[tk->i_idxposc].i_length;
1027 if( tk->i_cat == AUDIO_ES )
1029 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1031 toread[i_track].i_toread--;
1034 if( tk->i_idxposc < tk->i_idxnb)
1036 toread[i_track].i_posf =
1037 tk->p_index[tk->i_idxposc].i_pos;
1038 if( tk->i_idxposb > 0 )
1040 toread[i_track].i_posf += 8 + tk->i_idxposb;
1046 toread[i_track].i_posf = -1;
1049 b_stream = VLC_TRUE; /* at least one read succeed */
1051 if( tk->i_cat != VIDEO_ES )
1052 p_frame->i_dts = p_frame->i_pts;
1055 p_frame->i_dts = p_frame->i_pts;
1059 //p_pes->i_rate = p_demux->stream.control.i_rate;
1060 if( tk->p_out_muxed )
1061 stream_DemuxSend( tk->p_out_muxed, p_frame );
1063 es_out_Send( p_demux->out, tk->p_es, p_frame );
1068 /*****************************************************************************
1069 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1070 *****************************************************************************
1071 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1072 *****************************************************************************/
1073 static int Demux_UnSeekable( demux_t *p_demux )
1075 demux_sys_t *p_sys = p_demux->p_sys;
1076 avi_track_t *p_stream_master = NULL;
1077 unsigned int i_stream;
1078 unsigned int i_packet;
1080 if( p_sys->b_muxed )
1082 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1083 return VLC_EGENERIC;
1086 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1088 /* *** find master stream for data packet skipping algo *** */
1089 /* *** -> first video, if any, or first audio ES *** */
1090 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1092 avi_track_t *tk = p_sys->track[i_stream];
1095 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1097 if( b && tk->i_cat == VIDEO_ES )
1099 p_stream_master = tk;
1103 p_stream_master = tk;
1107 if( !p_stream_master )
1109 msg_Warn( p_demux, "no more stream selected" );
1113 p_sys->i_time = AVI_GetPTS( p_stream_master );
1115 for( i_packet = 0; i_packet < 10; i_packet++)
1117 #define p_stream p_sys->track[avi_pk.i_stream]
1119 avi_packet_t avi_pk;
1121 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1126 if( avi_pk.i_stream >= p_sys->i_track ||
1127 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1129 /* we haven't found an audio or video packet:
1130 * - we have seek, found first next packet
1131 * - others packets could be found, skip them
1133 switch( avi_pk.i_fourcc )
1135 case AVIFOURCC_JUNK:
1136 case AVIFOURCC_LIST:
1137 case AVIFOURCC_RIFF:
1138 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1139 case AVIFOURCC_idx1:
1142 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1144 return( 0 ); /* eof */
1147 "seems to have lost position, resync" );
1148 if( AVI_PacketSearch( p_demux ) )
1150 msg_Err( p_demux, "resync failed" );
1157 /* check for time */
1158 if( __ABS( AVI_GetPTS( p_stream ) -
1159 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1161 /* load it and send to decoder */
1163 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1167 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1169 if( avi_pk.i_cat != VIDEO_ES )
1170 p_frame->i_dts = p_frame->i_pts;
1173 p_frame->i_dts = p_frame->i_pts;
1177 //p_pes->i_rate = p_demux->stream.control.i_rate;
1178 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1182 if( AVI_PacketNext( p_demux ) )
1188 /* *** update stream time position *** */
1189 if( p_stream->i_samplesize )
1191 p_stream->i_idxposb += avi_pk.i_size;
1195 if( p_stream->i_cat == AUDIO_ES )
1197 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1199 p_stream->i_idxposc++;
1209 /*****************************************************************************
1210 * Seek: goto to i_date or i_percent
1211 *****************************************************************************/
1212 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1215 demux_sys_t *p_sys = p_demux->p_sys;
1216 unsigned int i_stream;
1217 msg_Dbg( p_demux, "seek requested: "I64Fd" seconds %d%%",
1218 i_date / 1000000, i_percent );
1220 if( p_sys->b_seekable )
1222 if( !p_sys->i_length )
1224 avi_track_t *p_stream;
1227 /* use i_percent to create a true i_date */
1228 msg_Warn( p_demux, "seeking without index at %d%%"
1229 " only works for interleaved files", i_percent );
1230 if( i_percent >= 100 )
1232 msg_Warn( p_demux, "cannot seek so far !" );
1233 return VLC_EGENERIC;
1235 i_percent = __MAX( i_percent, 0 );
1237 /* try to find chunk that is at i_percent or the file */
1238 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1239 p_sys->i_movi_begin );
1240 /* search first selected stream */
1241 for( i_stream = 0, p_stream = NULL;
1242 i_stream < p_sys->i_track; i_stream++ )
1244 p_stream = p_sys->track[i_stream];
1245 if( p_stream->b_activated )
1250 if( !p_stream || !p_stream->b_activated )
1252 msg_Warn( p_demux, "cannot find any selected stream" );
1253 return VLC_EGENERIC;
1256 /* be sure that the index exist */
1257 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1259 msg_Warn( p_demux, "cannot seek" );
1260 return VLC_EGENERIC;
1263 while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1264 p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1266 /* search after i_idxposc */
1267 if( AVI_StreamChunkSet( p_demux,
1268 i_stream, p_stream->i_idxposc + 1 ) )
1270 msg_Warn( p_demux, "cannot seek" );
1271 return VLC_EGENERIC;
1275 i_date = AVI_GetPTS( p_stream );
1276 /* TODO better support for i_samplesize != 0 */
1277 msg_Dbg( p_demux, "estimate date "I64Fd, i_date );
1281 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1283 avi_track_t *p_stream = p_sys->track[i_stream];
1285 if( !p_stream->b_activated )
1288 AVI_TrackSeek( p_demux, i_stream, i_date );
1290 p_sys->i_time = i_date;
1291 msg_Dbg( p_demux, "seek: "I64Fd" seconds", p_sys->i_time /1000000 );
1296 msg_Err( p_demux, "shouldn't yet be executed" );
1297 return VLC_EGENERIC;
1301 /*****************************************************************************
1303 *****************************************************************************/
1304 static double ControlGetPosition( demux_t *p_demux )
1306 demux_sys_t *p_sys = p_demux->p_sys;
1308 if( p_sys->i_length > 0 )
1310 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1312 else if( stream_Size( p_demux->s ) > 0 )
1318 /* search the more advanced selected es */
1319 for( i = 0; i < p_sys->i_track; i++ )
1321 avi_track_t *tk = p_sys->track[i];
1322 if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1324 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1325 tk->p_index[tk->i_idxposc].i_length + 8;
1332 return (double)i64 / stream_Size( p_demux->s );
1337 static int Control( demux_t *p_demux, int i_query, va_list args )
1339 demux_sys_t *p_sys = p_demux->p_sys;
1347 case DEMUX_GET_POSITION:
1348 pf = (double*)va_arg( args, double * );
1349 *pf = ControlGetPosition( p_demux );
1351 case DEMUX_SET_POSITION:
1352 f = (double)va_arg( args, double );
1353 if( p_sys->b_seekable )
1355 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1356 return Seek( p_demux, i64, (int)(f * 100) );
1360 int64_t i_pos = stream_Size( p_demux->s ) * f;
1361 return stream_Seek( p_demux->s, i_pos );
1364 case DEMUX_GET_TIME:
1365 pi64 = (int64_t*)va_arg( args, int64_t * );
1366 *pi64 = p_sys->i_time;
1369 case DEMUX_SET_TIME:
1373 i64 = (int64_t)va_arg( args, int64_t );
1374 if( p_sys->i_length > 0 )
1376 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1378 else if( p_sys->i_time > 0 )
1380 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1381 (double)i64 / (double)p_sys->i_time );
1383 return Seek( p_demux, i64, i_percent );
1385 case DEMUX_GET_LENGTH:
1386 pi64 = (int64_t*)va_arg( args, int64_t * );
1387 *pi64 = p_sys->i_length * (mtime_t)1000000;
1391 pf = (double*)va_arg( args, double * );
1393 for( i = 0; i < (int)p_sys->i_track; i++ )
1395 avi_track_t *tk = p_sys->track[i];
1396 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1398 *pf = (float)tk->i_rate / (float)tk->i_scale;
1403 case DEMUX_GET_META:
1404 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1405 vlc_meta_Merge( p_meta, p_sys->meta );
1409 return VLC_EGENERIC;
1413 /*****************************************************************************
1414 * Function to convert pts to chunk or byte
1415 *****************************************************************************/
1417 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1422 return (mtime_t)((int64_t)i_pts *
1423 (int64_t)tk->i_rate /
1424 (int64_t)tk->i_scale /
1427 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1429 if( !tk->i_scale || !tk->i_samplesize )
1432 return (mtime_t)((int64_t)i_pts *
1433 (int64_t)tk->i_rate /
1434 (int64_t)tk->i_scale /
1436 (int64_t)tk->i_samplesize );
1439 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1446 i_dpts = (mtime_t)( (int64_t)1000000 *
1448 (int64_t)tk->i_scale /
1449 (int64_t)tk->i_rate );
1451 if( tk->i_samplesize )
1453 return i_dpts / tk->i_samplesize;
1458 static mtime_t AVI_GetPTS( avi_track_t *tk )
1460 if( tk->i_samplesize )
1462 int64_t i_count = 0;
1464 /* we need a valid entry we will emulate one */
1465 if( tk->i_idxposc == tk->i_idxnb )
1469 /* use the last entry */
1470 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1471 + tk->p_index[tk->i_idxnb - 1].i_length;
1476 i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1478 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1482 if( tk->i_cat == AUDIO_ES )
1484 return AVI_GetDPTS( tk, tk->i_blockno );
1488 return AVI_GetDPTS( tk, tk->i_idxposc );
1493 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1495 demux_sys_t *p_sys = p_demux->p_sys;
1496 avi_packet_t avi_pk;
1497 int i_loop_count = 0;
1499 /* find first chunk of i_stream that isn't in index */
1501 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1503 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1504 if( AVI_PacketNext( p_demux ) )
1506 return VLC_EGENERIC;
1511 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1516 if( p_demux->b_die ) return VLC_EGENERIC;
1518 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1520 msg_Warn( p_demux, "cannot get packet header" );
1521 return VLC_EGENERIC;
1523 if( avi_pk.i_stream >= p_sys->i_track ||
1524 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1526 if( AVI_PacketNext( p_demux ) )
1528 return VLC_EGENERIC;
1531 /* Prevents from eating all the CPU with broken files.
1532 * This value should be low enough so that it doesn't
1533 * affect the reading speed too much. */
1534 if( !(++i_loop_count % 1024) )
1536 if( p_demux->b_die ) return VLC_EGENERIC;
1539 if( !(i_loop_count % (1024 * 10)) )
1540 msg_Warn( p_demux, "don't seem to find any data..." );
1545 /* add this chunk to the index */
1548 index.i_id = avi_pk.i_fourcc;
1550 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1552 index.i_pos = avi_pk.i_pos;
1553 index.i_length = avi_pk.i_size;
1554 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1556 if( avi_pk.i_stream == i_stream )
1561 if( AVI_PacketNext( p_demux ) )
1563 return VLC_EGENERIC;
1569 /* be sure that i_ck will be a valid index entry */
1570 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1573 demux_sys_t *p_sys = p_demux->p_sys;
1574 avi_track_t *p_stream = p_sys->track[i_stream];
1576 p_stream->i_idxposc = i_ck;
1577 p_stream->i_idxposb = 0;
1579 if( i_ck >= p_stream->i_idxnb )
1581 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1584 p_stream->i_idxposc++;
1585 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1587 return VLC_EGENERIC;
1590 } while( p_stream->i_idxposc < i_ck );
1596 /* XXX FIXME up to now, we assume that all chunk are one after one */
1597 static int AVI_StreamBytesSet( demux_t *p_demux,
1598 unsigned int i_stream,
1601 demux_sys_t *p_sys = p_demux->p_sys;
1602 avi_track_t *p_stream = p_sys->track[i_stream];
1604 if( ( p_stream->i_idxnb > 0 )
1605 &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1606 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1608 /* index is valid to find the ck */
1609 /* uses dichototmie to be fast enougth */
1610 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1611 int i_idxmax = p_stream->i_idxnb;
1615 if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1617 i_idxmax = i_idxposc ;
1618 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1622 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1623 p_stream->p_index[i_idxposc].i_length <= i_byte)
1625 i_idxmin = i_idxposc ;
1626 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1630 p_stream->i_idxposc = i_idxposc;
1631 p_stream->i_idxposb = i_byte -
1632 p_stream->p_index[i_idxposc].i_lengthtotal;
1641 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1642 p_stream->i_idxposb = 0;
1645 p_stream->i_idxposc++;
1646 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1648 return VLC_EGENERIC;
1651 } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1652 p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1654 p_stream->i_idxposb = i_byte -
1655 p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1660 static int AVI_TrackSeek( demux_t *p_demux,
1664 demux_sys_t *p_sys = p_demux->p_sys;
1665 avi_track_t *tk = p_sys->track[i_stream];
1667 #define p_stream p_sys->track[i_stream]
1670 i_oldpts = AVI_GetPTS( p_stream );
1672 if( !p_stream->i_samplesize )
1674 if( AVI_StreamChunkSet( p_demux,
1676 AVI_PTSToChunk( p_stream, i_date ) ) )
1678 return VLC_EGENERIC;
1681 if( p_stream->i_cat == AUDIO_ES )
1685 for( i = 0; i < tk->i_idxposc; i++ )
1687 if( tk->i_blocksize > 0 )
1689 tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1699 "old:"I64Fd" %s new "I64Fd,
1701 i_oldpts > i_date ? ">" : "<",
1704 if( p_stream->i_cat == VIDEO_ES )
1706 /* search key frame */
1707 //if( i_date < i_oldpts || 1 )
1709 while( p_stream->i_idxposc > 0 &&
1710 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1713 if( AVI_StreamChunkSet( p_demux,
1715 p_stream->i_idxposc - 1 ) )
1717 return VLC_EGENERIC;
1720 if( p_stream->p_es )
1721 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, p_stream->p_es, i_date );
1726 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1727 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1730 if( AVI_StreamChunkSet( p_demux,
1732 p_stream->i_idxposc + 1 ) )
1734 return VLC_EGENERIC;
1743 if( AVI_StreamBytesSet( p_demux,
1745 AVI_PTSToByte( p_stream, i_date ) ) )
1747 return VLC_EGENERIC;
1754 /****************************************************************************
1755 * Return VLC_TRUE if it's a key frame
1756 ****************************************************************************/
1757 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1763 * startcode: 0x00000100 32bits
1764 * framenumber ? 5bits
1765 * piture type 0(I),1(P) 2bits
1767 if( GetDWBE( p_byte ) != 0x00000100 )
1769 /* it's not an msmpegv1 stream, strange...*/
1770 return AVIIF_KEYFRAME;
1772 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1775 case FOURCC_DIV3: /* wmv1 also */
1777 * picture type 0(I),1(P) 2bits
1779 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1781 /* we should find first occurrence of 0x000001b6 (32bits)
1782 * startcode: 0x000001b6 32bits
1783 * piture type 0(I),1(P) 2bits
1785 if( GetDWBE( p_byte ) != 0x000001b6 )
1787 /* not true , need to find the first VOP header */
1788 return AVIIF_KEYFRAME;
1790 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1793 /* I can't do it, so say yes */
1794 return AVIIF_KEYFRAME;
1798 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1803 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1807 /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1811 return VLC_FOURCC('m','r','l','e');
1860 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1864 /****************************************************************************
1866 ****************************************************************************/
1867 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1868 unsigned int *pi_number, unsigned int *pi_type )
1870 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1873 c1 = ((uint8_t *)&i_id)[0];
1874 c2 = ((uint8_t *)&i_id)[1];
1876 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1878 SET_PTR( pi_number, 100 ); /* > max stream number */
1879 SET_PTR( pi_type, UNKNOWN_ES );
1883 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1884 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1887 SET_PTR( pi_type, AUDIO_ES );
1891 SET_PTR( pi_type, VIDEO_ES );
1894 SET_PTR( pi_type, UNKNOWN_ES );
1901 /****************************************************************************
1903 ****************************************************************************/
1904 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1906 const uint8_t *p_peek;
1908 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1910 return VLC_EGENERIC;
1912 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1913 p_pk->i_size = GetDWLE( p_peek + 4 );
1914 p_pk->i_pos = stream_Tell( p_demux->s );
1915 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1917 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1918 p_peek[10], p_peek[11] );
1925 memcpy( p_pk->i_peek, p_peek + 8, 8 );
1927 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1931 static int AVI_PacketNext( demux_t *p_demux )
1933 avi_packet_t avi_ck;
1936 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1938 return VLC_EGENERIC;
1941 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
1942 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
1946 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
1947 avi_ck.i_type == AVIFOURCC_AVIX )
1953 i_skip = __EVEN( avi_ck.i_size ) + 8;
1956 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
1958 return VLC_EGENERIC;
1963 static int AVI_PacketRead( demux_t *p_demux,
1965 block_t **pp_frame )
1969 i_size = __EVEN( p_pk->i_size + 8 );
1971 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
1973 return VLC_EGENERIC;
1975 (*pp_frame)->p_buffer += 8;
1976 (*pp_frame)->i_buffer -= 8;
1978 if( i_size != p_pk->i_size + 8 )
1980 (*pp_frame)->i_buffer--;
1986 static int AVI_PacketSearch( demux_t *p_demux )
1988 demux_sys_t *p_sys = p_demux->p_sys;
1989 avi_packet_t avi_pk;
1994 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
1996 return VLC_EGENERIC;
1998 AVI_PacketGetHeader( p_demux, &avi_pk );
1999 if( avi_pk.i_stream < p_sys->i_track &&
2000 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2004 switch( avi_pk.i_fourcc )
2006 case AVIFOURCC_JUNK:
2007 case AVIFOURCC_LIST:
2008 case AVIFOURCC_RIFF:
2009 case AVIFOURCC_idx1:
2013 /* Prevents from eating all the CPU with broken files.
2014 * This value should be low enough so that it doesn't affect the
2015 * reading speed too much (not that we care much anyway because
2016 * this code is called only on broken files). */
2017 if( !(++i_count % 1024) )
2019 if( p_demux->b_die ) return VLC_EGENERIC;
2022 if( !(i_count % (1024 * 10)) )
2023 msg_Warn( p_demux, "trying to resync..." );
2028 /****************************************************************************
2030 ****************************************************************************/
2031 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
2033 avi_entry_t *p_index)
2035 avi_track_t *tk = p_sys->track[i_stream];
2037 /* Update i_movi_lastchunk_pos */
2038 if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2040 p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2044 if( tk->i_idxnb >= tk->i_idxmax )
2046 tk->i_idxmax += 16384;
2047 tk->p_index = realloc( tk->p_index,
2048 tk->i_idxmax * sizeof( avi_entry_t ) );
2049 if( tk->p_index == NULL )
2054 /* calculate cumulate length */
2055 if( tk->i_idxnb > 0 )
2057 p_index->i_lengthtotal =
2058 tk->p_index[tk->i_idxnb - 1].i_length +
2059 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2063 p_index->i_lengthtotal = 0;
2066 tk->p_index[tk->i_idxnb++] = *p_index;
2069 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2071 demux_sys_t *p_sys = p_demux->p_sys;
2073 avi_chunk_list_t *p_riff;
2074 avi_chunk_list_t *p_movi;
2075 avi_chunk_idx1_t *p_idx1;
2077 unsigned int i_stream;
2078 unsigned int i_index;
2082 vlc_bool_t b_keyset[100];
2084 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2085 p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2086 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2090 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2091 return VLC_EGENERIC;
2094 /* *** calculate offset *** */
2095 /* Well, avi is __SHIT__ so test more than one entry
2096 * (needed for some avi files) */
2098 for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2100 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2102 i_offset = p_movi->i_chunk_pos + 8;
2107 /* Reset b_keyset */
2108 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2109 b_keyset[i_stream] = VLC_FALSE;
2111 for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2115 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2118 if( i_stream < p_sys->i_track &&
2119 i_cat == p_sys->track[i_stream]->i_cat )
2122 index.i_id = p_idx1->entry[i_index].i_fourcc;
2124 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2125 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2126 index.i_length = p_idx1->entry[i_index].i_length;
2127 AVI_IndexAddEntry( p_sys, i_stream, &index );
2129 if( index.i_flags&AVIIF_KEYFRAME )
2130 b_keyset[i_stream] = VLC_TRUE;
2134 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2136 if( !b_keyset[i_stream] )
2138 avi_track_t *tk = p_sys->track[i_stream];
2140 msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2141 for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2142 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2148 static void __Parse_indx( demux_t *p_demux,
2150 avi_chunk_indx_t *p_indx )
2152 demux_sys_t *p_sys = p_demux->p_sys;
2156 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2157 if( p_indx->i_indexsubtype == 0 )
2159 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2161 index.i_id = p_indx->i_id;
2162 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2163 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2164 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2166 AVI_IndexAddEntry( p_sys, i_stream, &index );
2169 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2171 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2173 index.i_id = p_indx->i_id;
2174 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2175 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2176 index.i_length = p_indx->idx.field[i].i_size;
2178 AVI_IndexAddEntry( p_sys, i_stream, &index );
2183 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2187 static void AVI_IndexLoad_indx( demux_t *p_demux )
2189 demux_sys_t *p_sys = p_demux->p_sys;
2190 unsigned int i_stream;
2193 avi_chunk_list_t *p_riff;
2194 avi_chunk_list_t *p_hdrl;
2196 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2197 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2199 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2201 avi_chunk_list_t *p_strl;
2202 avi_chunk_indx_t *p_indx;
2204 #define p_stream p_sys->track[i_stream]
2205 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2206 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2210 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2215 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2217 __Parse_indx( p_demux, i_stream, p_indx );
2219 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2222 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2224 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2225 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2229 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2234 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2240 static void AVI_IndexLoad( demux_t *p_demux )
2242 demux_sys_t *p_sys = p_demux->p_sys;
2243 unsigned int i_stream;
2245 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2247 p_sys->track[i_stream]->i_idxnb = 0;
2248 p_sys->track[i_stream]->i_idxmax = 0;
2249 p_sys->track[i_stream]->p_index = NULL;
2254 AVI_IndexLoad_indx( p_demux );
2256 else if( AVI_IndexLoad_idx1( p_demux ) )
2258 /* try indx if idx1 failed as some "normal" file have indx too */
2259 AVI_IndexLoad_indx( p_demux );
2262 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2264 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2265 i_stream, p_sys->track[i_stream]->i_idxnb );
2269 static void AVI_IndexCreate( demux_t *p_demux )
2271 demux_sys_t *p_sys = p_demux->p_sys;
2273 avi_chunk_list_t *p_riff;
2274 avi_chunk_list_t *p_movi;
2276 unsigned int i_stream;
2279 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2280 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2284 msg_Err( p_demux, "cannot find p_movi" );
2288 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2290 p_sys->track[i_stream]->i_idxnb = 0;
2291 p_sys->track[i_stream]->i_idxmax = 0;
2292 p_sys->track[i_stream]->p_index = NULL;
2294 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2295 stream_Size( p_demux->s ) );
2297 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2298 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2301 /* Only show dialog if AVI is > 10MB */
2302 p_demux->p_sys->i_dialog_id = -1;
2303 if( stream_Size( p_demux->s ) > 10000000 )
2305 p_demux->p_sys->i_dialog_id = intf_IntfProgress( p_demux,
2306 _( "Fixing AVI Index..." ),
2308 p_demux->p_sys->last_update = mdate();
2315 if( p_demux->b_die )
2320 /* Don't update dialog too often */
2321 if( p_demux->p_sys->i_dialog_id > 0 &&
2322 mdate() - p_demux->p_sys->last_update > 100000 )
2324 int64_t i_pos = stream_Tell( p_demux->s )* 100 /
2325 stream_Size( p_demux->s );
2326 float f_pos = (float)i_pos;
2327 p_demux->p_sys->last_update = mdate();
2328 intf_ProgressUpdate( p_demux, p_demux->p_sys->i_dialog_id,
2329 _( "Fixing AVI Index..." ), f_pos, -1 );
2332 if( AVI_PacketGetHeader( p_demux, &pk ) )
2336 if( pk.i_stream < p_sys->i_track &&
2337 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2340 index.i_id = pk.i_fourcc;
2342 AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2343 index.i_pos = pk.i_pos;
2344 index.i_length = pk.i_size;
2345 AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2349 switch( pk.i_fourcc )
2351 case AVIFOURCC_idx1:
2354 avi_chunk_list_t *p_sysx;
2355 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2356 AVIFOURCC_RIFF, 1 );
2358 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2359 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24))
2366 case AVIFOURCC_RIFF:
2367 msg_Dbg( p_demux, "new RIFF chunk found" );
2369 case AVIFOURCC_JUNK:
2372 msg_Warn( p_demux, "need resync, probably broken avi" );
2373 if( AVI_PacketSearch( p_demux ) )
2375 msg_Warn( p_demux, "lost sync, abord index creation" );
2381 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2382 AVI_PacketNext( p_demux ) )
2389 if( p_demux->p_sys->i_dialog_id > 0 )
2391 intf_UserHide( p_demux, p_demux->p_sys->i_dialog_id );
2394 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2397 "stream[%d] creating %d index entries",
2399 p_sys->track[i_stream]->i_idxnb );
2403 /*****************************************************************************
2405 *****************************************************************************/
2406 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2408 demux_sys_t *p_sys = p_demux->p_sys;
2410 int b_end = VLC_TRUE;
2412 for( i = 0; i < p_sys->i_track; i++ )
2414 avi_track_t *tk = p_sys->track[i];
2415 if( tk->i_idxposc >= tk->i_idxnb )
2417 tk->b_activated = VLC_FALSE;
2418 if( tk->p_es ) es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, VLC_FALSE );
2428 /****************************************************************************
2429 * AVI_MovieGetLength give max streams length in second
2430 ****************************************************************************/
2431 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2433 demux_sys_t *p_sys = p_demux->p_sys;
2434 mtime_t i_maxlength = 0;
2437 for( i = 0; i < p_sys->i_track; i++ )
2439 avi_track_t *tk = p_sys->track[i];
2442 /* fix length for each stream */
2443 if( tk->i_idxnb < 1 || !tk->p_index )
2448 if( tk->i_samplesize )
2450 i_length = AVI_GetDPTS( tk,
2451 tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2452 tk->p_index[tk->i_idxnb-1].i_length );
2456 i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2458 i_length /= (mtime_t)1000000; /* in seconds */
2461 "stream[%d] length:"I64Fd" (based on index)",
2464 i_maxlength = __MAX( i_maxlength, i_length );