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 *****************************************************************************/
26 #include <stdlib.h> /* malloc(), free() */
29 #include <vlc/input.h>
31 #include <vlc_interaction.h>
39 /*****************************************************************************
41 *****************************************************************************/
43 #define INTERLEAVE_TEXT N_("Force interleaved method" )
44 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method." )
46 #define INDEX_TEXT N_("Force index creation")
47 #define INDEX_LONGTEXT N_( \
48 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
49 "or incomplete (not seekable)." )
51 static int Open ( vlc_object_t * );
52 static void Close( vlc_object_t * );
55 set_shortname( "AVI" );
56 set_description( _("AVI demuxer") );
57 set_capability( "demux2", 212 );
58 set_category( CAT_INPUT );
59 set_subcategory( SUBCAT_INPUT_DEMUX );
61 add_bool( "avi-interleaved", 0, NULL,
62 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, VLC_TRUE );
63 add_bool( "avi-index", 0, NULL,
64 INDEX_TEXT, INDEX_LONGTEXT, VLC_FALSE );
66 set_callbacks( Open, Close );
69 /*****************************************************************************
71 *****************************************************************************/
72 static int Control ( demux_t *, int, va_list );
73 static int Seek ( demux_t *, mtime_t, int );
74 static int Demux_Seekable ( demux_t * );
75 static int Demux_UnSeekable( demux_t * );
77 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
78 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
82 vlc_fourcc_t i_fourcc;
85 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
87 uint8_t i_peek[8]; /* first 8 bytes */
89 unsigned int i_stream;
100 uint32_t i_lengthtotal;
106 vlc_bool_t b_activated;
108 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
109 vlc_fourcc_t i_codec;
117 avi_entry_t *p_index;
118 unsigned int i_idxnb;
119 unsigned int i_idxmax;
121 unsigned int i_idxposc; /* numero of chunk */
122 unsigned int i_idxposb; /* byte in the current chunk */
124 /* For VBR audio only */
125 unsigned int i_blockno;
126 unsigned int i_blocksize;
134 vlc_bool_t b_seekable;
140 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
142 /* number of streams and information */
143 unsigned int i_track;
154 static inline off_t __EVEN( off_t i )
156 return (i & 1) ? i + 1 : i;
159 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
160 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
161 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
162 static mtime_t AVI_GetPTS ( avi_track_t * );
165 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
166 static int AVI_StreamChunkSet ( demux_t *,
167 unsigned int i_stream, unsigned int i_ck );
168 static int AVI_StreamBytesSet ( demux_t *,
169 unsigned int i_stream, off_t i_byte );
171 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
172 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
174 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
175 static int AVI_PacketNext ( demux_t * );
176 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
177 static int AVI_PacketSearch ( demux_t * );
179 static void AVI_IndexLoad ( demux_t * );
180 static void AVI_IndexCreate ( demux_t * );
181 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
183 static mtime_t AVI_MovieGetLength( demux_t * );
185 /*****************************************************************************
187 *****************************************************************************/
188 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
189 static int AVI_TrackStopFinishedStreams( demux_t *);
192 - For VBR mp3 stream:
193 count blocks by rounded-up chunksizes instead of chunks
194 we need full emulation of dshow avi demuxer bugs :(
195 fixes silly nandub-style a-v delaying in avi with vbr mp3...
196 (from mplayer 2002/08/02)
200 /*****************************************************************************
201 * Open: check file and initializes AVI structures
202 *****************************************************************************/
203 static int Open( vlc_object_t * p_this )
205 demux_t *p_demux = (demux_t *)p_this;
208 vlc_bool_t b_index = VLC_FALSE;
211 avi_chunk_list_t *p_riff = (avi_chunk_list_t*)&ck_riff;
212 avi_chunk_list_t *p_hdrl, *p_movi;
213 avi_chunk_avih_t *p_avih;
215 unsigned int i_track;
216 unsigned int i, i_peeker;
220 /* Is it an avi file ? */
221 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
223 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
225 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) &&
226 !strncmp( (char *)&p_peek[8], "AVI ", 4 ) ) break;
229 if( i_peeker == 188 )
234 /* Initialize input structures. */
235 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
236 memset( p_sys, 0, sizeof( demux_sys_t ) );
239 p_sys->i_movi_lastchunk_pos = 0;
240 p_sys->b_odml = VLC_FALSE;
245 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
247 p_demux->pf_control = Control;
248 p_demux->pf_demux = Demux_Seekable;
250 /* For unseekable stream, automaticaly use Demux_UnSeekable */
251 if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
253 p_demux->pf_demux = Demux_UnSeekable;
258 stream_Read( p_demux->s, NULL, i_peeker );
261 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
263 msg_Err( p_demux, "avi module discarded (invalid file)" );
267 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
269 unsigned int i_count =
270 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
272 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
273 for( i = 1; i < i_count; i++ )
275 avi_chunk_list_t *p_sysx;
277 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
278 if( p_sysx->i_type == AVIFOURCC_AVIX )
280 msg_Warn( p_demux, "detected OpenDML file" );
281 p_sys->b_odml = VLC_TRUE;
287 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
288 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
289 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
291 if( !p_hdrl || !p_movi )
293 msg_Err( p_demux, "avi module discarded (invalid file)" );
297 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
299 msg_Err( p_demux, "cannot find avih chunk" );
302 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
303 if( p_avih->i_streams != i_track )
306 "found %d stream but %d are declared",
307 i_track, p_avih->i_streams );
311 msg_Err( p_demux, "no stream defined!" );
315 /* print information on streams */
316 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
318 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
319 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
320 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
321 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
322 if( ( p_sys->meta = vlc_meta_New() ) )
325 sprintf( buffer, "%s%s%s%s",
326 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
327 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
328 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
329 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
330 vlc_meta_SetSetting( p_sys->meta, buffer );
333 /* now read info on each stream and create ES */
334 for( i = 0 ; i < i_track; i++ )
336 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
337 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
338 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
339 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
340 avi_chunk_strf_auds_t *p_auds;
341 avi_chunk_strf_vids_t *p_vids;
344 tk->b_activated = VLC_FALSE;
354 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
355 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
357 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
359 msg_Warn( p_demux, "stream[%d] incomplete", i );
363 tk->i_rate = p_strh->i_rate;
364 tk->i_scale = p_strh->i_scale;
365 tk->i_samplesize = p_strh->i_samplesize;
366 msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
367 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
369 switch( p_strh->i_type )
371 case( AVIFOURCC_auds ):
372 tk->i_cat = AUDIO_ES;
373 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
374 p_auds->p_wf->wFormatTag );
375 if( ( tk->i_blocksize = p_auds->p_wf->nBlockAlign ) == 0 )
377 if( p_auds->p_wf->wFormatTag == 1 )
379 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
386 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
388 fmt.audio.i_channels = p_auds->p_wf->nChannels;
389 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
390 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
391 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
392 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
393 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
394 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
395 fmt.p_extra = &p_auds->p_wf[1];
396 msg_Dbg( p_demux, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
397 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
398 p_auds->p_wf->nSamplesPerSec, p_auds->p_wf->wBitsPerSample);
401 case( AVIFOURCC_vids ):
402 tk->i_cat = VIDEO_ES;
403 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
404 p_vids->p_bih->biCompression );
405 if( p_vids->p_bih->biCompression == 0x00 )
407 switch( p_vids->p_bih->biBitCount )
410 tk->i_codec = VLC_FOURCC('R','V','3','2');
413 tk->i_codec = VLC_FOURCC('R','V','2','4');
416 /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
419 tk->i_codec = VLC_FOURCC('R','V','1','5');
422 tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
425 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
427 if( p_vids->p_bih->biBitCount == 24 )
429 /* This is in BGR format */
430 fmt.video.i_bmask = 0x00ff0000;
431 fmt.video.i_gmask = 0x0000ff00;
432 fmt.video.i_rmask = 0x000000ff;
437 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
438 if( tk->i_codec == FOURCC_mp4v &&
439 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
441 fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
444 tk->i_samplesize = 0;
445 fmt.video.i_width = p_vids->p_bih->biWidth;
446 fmt.video.i_height = p_vids->p_bih->biHeight;
447 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
448 fmt.video.i_frame_rate = tk->i_rate;
449 fmt.video.i_frame_rate_base = tk->i_scale;
451 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
452 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
453 fmt.p_extra = &p_vids->p_bih[1];
454 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
455 i, (char*)&p_vids->p_bih->biCompression,
456 p_vids->p_bih->biWidth,
457 p_vids->p_bih->biHeight,
458 p_vids->p_bih->biBitCount,
459 (float)tk->i_rate/(float)tk->i_scale );
461 if( p_vids->p_bih->biCompression == 0x00 )
463 /* RGB DIB are coded from bottom to top */
465 (unsigned int)(-(int)p_vids->p_bih->biHeight);
468 /* Extract palette from extradata if bpp <= 8
469 * (assumes that extradata contains only palette but appears
470 * to be true for all palettized codecs we support) */
471 if( fmt.i_extra && fmt.video.i_bits_per_pixel <= 8 &&
472 fmt.video.i_bits_per_pixel > 0 )
476 fmt.video.p_palette = calloc( sizeof(video_palette_t), 1 );
477 fmt.video.p_palette->i_entries = 1;
479 /* Apparently this is necessary. But why ? */
481 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
482 for( i = 0; i < __MIN(fmt.i_extra/4, 256); i++ )
484 ((uint32_t *)&fmt.video.p_palette->palette[0][0])[i] =
485 GetDWLE((uint32_t*)fmt.p_extra + i);
490 case( AVIFOURCC_txts):
492 tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
493 msg_Dbg( p_demux, "stream[%d] subtitles", i );
494 es_format_Init( &fmt, SPU_ES, tk->i_codec );
497 case( AVIFOURCC_mids):
498 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
501 msg_Warn( p_demux, "stream[%d] unknown type", i );
507 /* The charset of p_strn is undefined */
508 EnsureUTF8( p_strn->p_str );
509 fmt.psz_description = strdup( p_strn->p_str );
511 tk->p_es = es_out_Add( p_demux->out, &fmt );
512 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
515 if( p_sys->i_track <= 0 )
517 msg_Err( p_demux, "no valid track" );
521 if( config_GetInt( p_demux, "avi-index" ) )
524 if( p_sys->b_seekable )
526 AVI_IndexCreate( p_demux );
530 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
531 AVI_IndexLoad( p_demux );
536 AVI_IndexLoad( p_demux );
539 /* *** movie length in sec *** */
540 p_sys->i_length = AVI_MovieGetLength( p_demux );
541 if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
542 (mtime_t)p_avih->i_microsecperframe /
545 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
546 "axproximative or will have strange behaviour" );
550 i_create = intf_UserYesNo( p_demux, _("AVI Index") ,
551 _( "This AVI file is broken. Seeking will not "
552 "work correctly.\nDo you want to "
553 "try to repair it (this might take a long time) ?" ) );
554 if( i_create == DIALOG_OK_YES )
557 msg_Dbg( p_demux, "Fixing AVI index" );
560 else if( i_create == DIALOG_CANCELLED )
563 p_demux->p_parent->b_die = VLC_TRUE;
569 /* fix some BeOS MediaKit generated file */
570 for( i = 0 ; i < p_sys->i_track; i++ )
572 avi_track_t *tk = p_sys->track[i];
573 avi_chunk_list_t *p_strl;
574 avi_chunk_strh_t *p_strh;
575 avi_chunk_strf_auds_t *p_auds;
577 if( tk->i_cat != AUDIO_ES )
581 if( tk->i_idxnb < 1 ||
583 tk->i_samplesize != 0 )
587 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
588 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
589 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
591 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
592 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
594 int64_t i_track_length =
595 tk->p_index[tk->i_idxnb-1].i_length +
596 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
597 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
598 (mtime_t)p_avih->i_microsecperframe;
602 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
605 tk->i_samplesize = 1;
606 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
607 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
611 if( p_sys->b_seekable )
613 /* we have read all chunk so go back to movi */
614 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
616 /* Skip movi header */
617 stream_Read( p_demux->s, NULL, 12 );
619 p_sys->i_movi_begin = p_movi->i_chunk_pos;
625 vlc_meta_Delete( p_sys->meta );
627 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
632 /*****************************************************************************
633 * Close: frees unused data
634 *****************************************************************************/
635 static void Close ( vlc_object_t * p_this )
637 demux_t * p_demux = (demux_t *)p_this;
639 demux_sys_t *p_sys = p_demux->p_sys ;
641 for( i = 0; i < p_sys->i_track; i++ )
643 if( p_sys->track[i] )
645 FREE( p_sys->track[i]->p_index );
646 free( p_sys->track[i] );
649 FREE( p_sys->track );
650 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
651 vlc_meta_Delete( p_sys->meta );
656 /*****************************************************************************
657 * Demux_Seekable: reads and demuxes data packets for stream seekable
658 *****************************************************************************
659 * AVIDemux: reads and demuxes data packets
660 *****************************************************************************
661 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
662 *****************************************************************************/
669 off_t i_posf; /* where we will read :
670 if i_idxposb == 0 : begining of chunk (+8 to acces data)
671 else : point on data directly */
672 } avi_track_toread_t;
674 static int Demux_Seekable( demux_t *p_demux )
676 demux_sys_t *p_sys = p_demux->p_sys;
678 unsigned int i_track_count = 0;
679 unsigned int i_track;
681 /* cannot be more than 100 stream (dcXX or wbXX) */
682 avi_track_toread_t toread[100];
685 /* detect new selected/unselected streams */
686 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
688 avi_track_t *tk = p_sys->track[i_track];
691 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
692 if( b && !tk->b_activated )
694 if( p_sys->b_seekable)
696 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
698 tk->b_activated = VLC_TRUE;
700 else if( !b && tk->b_activated )
702 tk->b_activated = VLC_FALSE;
710 if( i_track_count <= 0 )
712 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
714 p_sys->i_time += 25*1000; /* read 25ms */
717 if( p_sys->i_time >= i_length )
721 msg_Warn( p_demux, "no track selected, exiting..." );
725 /* wait for the good time */
726 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
727 p_sys->i_time += 25*1000; /* read 25ms */
730 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
732 avi_track_t *tk = p_sys->track[i_track];
735 toread[i_track].b_ok = tk->b_activated;
736 if( tk->i_idxposc < tk->i_idxnb )
738 toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
739 if( tk->i_idxposb > 0 )
741 toread[i_track].i_posf += 8 + tk->i_idxposb;
746 toread[i_track].i_posf = -1;
749 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
751 if( tk->i_samplesize )
753 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
757 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
762 toread[i_track].i_toread *= -1;
766 b_stream = VLC_FALSE;
777 /* search for first chunk to be read */
778 for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_sys->i_track; i++ )
780 if( !toread[i].b_ok ||
781 AVI_GetDPTS( p_sys->track[i],
782 toread[i].i_toread ) <= -25 * 1000 )
787 if( toread[i].i_toread > 0 )
789 b_done = VLC_FALSE; /* not yet finished */
791 if( toread[i].i_posf > 0 )
793 if( i_pos == -1 || i_pos > toread[i_track].i_posf )
796 i_pos = toread[i].i_posf;
808 int i_loop_count = 0;
810 /* no valid index, we will parse directly the stream
811 * in case we fail we will disable all finished stream */
812 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
814 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
815 if( AVI_PacketNext( p_demux ) )
817 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
822 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
829 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
832 "cannot get packet header, track disabled" );
833 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
835 if( avi_pk.i_stream >= p_sys->i_track ||
836 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
838 if( AVI_PacketNext( p_demux ) )
841 "cannot skip packet, track disabled" );
842 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
845 /* Prevents from eating all the CPU with broken files.
846 * This value should be low enough so that it doesn't
847 * affect the reading speed too much. */
848 if( !(++i_loop_count % 1024) )
850 if( p_demux->b_die ) return -1;
853 if( !(i_loop_count % (1024 * 10)) )
855 "don't seem to find any data..." );
861 /* add this chunk to the index */
864 index.i_id = avi_pk.i_fourcc;
866 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
868 index.i_pos = avi_pk.i_pos;
869 index.i_length = avi_pk.i_size;
870 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
872 i_track = avi_pk.i_stream;
873 tk = p_sys->track[i_track];
874 /* do we will read this data ? */
875 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
881 if( AVI_PacketNext( p_demux ) )
884 "cannot skip packet, track disabled" );
885 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
894 stream_Seek( p_demux->s, i_pos );
897 /* Set the track to use */
898 tk = p_sys->track[i_track];
900 /* read thoses data */
901 if( tk->i_samplesize )
903 unsigned int i_toread;
905 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
907 if( tk->i_samplesize > 1 )
909 i_toread = tk->i_samplesize;
913 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
914 i_toread = __MAX( i_toread, 100 );
917 i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
923 i_size = tk->p_index[tk->i_idxposc].i_length;
926 if( tk->i_idxposb == 0 )
928 i_size += 8; /* need to read and skip header */
931 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
933 msg_Warn( p_demux, "failed reading data" );
934 tk->b_activated = VLC_FALSE;
935 toread[i_track].b_ok = VLC_FALSE;
938 if( i_size % 2 ) /* read was padded on word boundary */
943 if( tk->i_idxposb == 0 )
945 p_frame->p_buffer += 8;
946 p_frame->i_buffer -= 8;
948 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
949 if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
951 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
955 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
959 if( tk->i_samplesize )
961 if( tk->i_idxposb == 0 )
965 toread[i_track].i_toread -= i_size;
966 tk->i_idxposb += i_size;
968 tk->p_index[tk->i_idxposc].i_length )
976 int i_length = tk->p_index[tk->i_idxposc].i_length;
979 if( tk->i_cat == AUDIO_ES )
981 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
983 toread[i_track].i_toread--;
986 if( tk->i_idxposc < tk->i_idxnb)
988 toread[i_track].i_posf =
989 tk->p_index[tk->i_idxposc].i_pos;
990 if( tk->i_idxposb > 0 )
992 toread[i_track].i_posf += 8 + tk->i_idxposb;
998 toread[i_track].i_posf = -1;
1001 b_stream = VLC_TRUE; /* at least one read succeed */
1003 if( tk->i_cat != VIDEO_ES )
1004 p_frame->i_dts = p_frame->i_pts;
1007 p_frame->i_dts = p_frame->i_pts;
1011 //p_pes->i_rate = p_demux->stream.control.i_rate;
1012 es_out_Send( p_demux->out, tk->p_es, p_frame );
1017 /*****************************************************************************
1018 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1019 *****************************************************************************
1020 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1021 *****************************************************************************/
1022 static int Demux_UnSeekable( demux_t *p_demux )
1024 demux_sys_t *p_sys = p_demux->p_sys;
1025 avi_track_t *p_stream_master = NULL;
1026 unsigned int i_stream;
1027 unsigned int i_packet;
1029 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1031 /* *** find master stream for data packet skipping algo *** */
1032 /* *** -> first video, if any, or first audio ES *** */
1033 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1035 avi_track_t *tk = p_sys->track[i_stream];
1038 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1040 if( b && tk->i_cat == VIDEO_ES )
1042 p_stream_master = tk;
1046 p_stream_master = tk;
1050 if( !p_stream_master )
1052 msg_Warn( p_demux, "no more stream selected" );
1056 p_sys->i_time = AVI_GetPTS( p_stream_master );
1058 for( i_packet = 0; i_packet < 10; i_packet++)
1060 #define p_stream p_sys->track[avi_pk.i_stream]
1062 avi_packet_t avi_pk;
1064 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1069 if( avi_pk.i_stream >= p_sys->i_track ||
1070 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1072 /* we haven't found an audio or video packet:
1073 * - we have seek, found first next packet
1074 * - others packets could be found, skip them
1076 switch( avi_pk.i_fourcc )
1078 case AVIFOURCC_JUNK:
1079 case AVIFOURCC_LIST:
1080 case AVIFOURCC_RIFF:
1081 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1082 case AVIFOURCC_idx1:
1085 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1087 return( 0 ); /* eof */
1090 "seems to have lost position, resync" );
1091 if( AVI_PacketSearch( p_demux ) )
1093 msg_Err( p_demux, "resync failed" );
1100 /* check for time */
1101 if( __ABS( AVI_GetPTS( p_stream ) -
1102 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1104 /* load it and send to decoder */
1106 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1110 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1112 if( avi_pk.i_cat != VIDEO_ES )
1113 p_frame->i_dts = p_frame->i_pts;
1116 p_frame->i_dts = p_frame->i_pts;
1120 //p_pes->i_rate = p_demux->stream.control.i_rate;
1121 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1125 if( AVI_PacketNext( p_demux ) )
1131 /* *** update stream time position *** */
1132 if( p_stream->i_samplesize )
1134 p_stream->i_idxposb += avi_pk.i_size;
1138 if( p_stream->i_cat == AUDIO_ES )
1140 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1142 p_stream->i_idxposc++;
1152 /*****************************************************************************
1153 * Seek: goto to i_date or i_percent
1154 *****************************************************************************/
1155 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1158 demux_sys_t *p_sys = p_demux->p_sys;
1159 unsigned int i_stream;
1160 msg_Dbg( p_demux, "seek requested: "I64Fd" secondes %d%%",
1161 i_date / 1000000, i_percent );
1163 if( p_sys->b_seekable )
1165 if( !p_sys->i_length )
1167 avi_track_t *p_stream;
1170 /* use i_percent to create a true i_date */
1171 msg_Warn( p_demux, "seeking without index at %d%%"
1172 " only works for interleaved files", i_percent );
1173 if( i_percent >= 100 )
1175 msg_Warn( p_demux, "cannot seek so far !" );
1176 return VLC_EGENERIC;
1178 i_percent = __MAX( i_percent, 0 );
1180 /* try to find chunk that is at i_percent or the file */
1181 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1182 p_sys->i_movi_begin );
1183 /* search first selected stream */
1184 for( i_stream = 0, p_stream = NULL;
1185 i_stream < p_sys->i_track; i_stream++ )
1187 p_stream = p_sys->track[i_stream];
1188 if( p_stream->b_activated )
1193 if( !p_stream || !p_stream->b_activated )
1195 msg_Warn( p_demux, "cannot find any selected stream" );
1196 return VLC_EGENERIC;
1199 /* be sure that the index exist */
1200 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1202 msg_Warn( p_demux, "cannot seek" );
1203 return VLC_EGENERIC;
1206 while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1207 p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1209 /* search after i_idxposc */
1210 if( AVI_StreamChunkSet( p_demux,
1211 i_stream, p_stream->i_idxposc + 1 ) )
1213 msg_Warn( p_demux, "cannot seek" );
1214 return VLC_EGENERIC;
1218 i_date = AVI_GetPTS( p_stream );
1219 /* TODO better support for i_samplesize != 0 */
1220 msg_Dbg( p_demux, "estimate date "I64Fd, i_date );
1223 #define p_stream p_sys->track[i_stream]
1225 /* seek for chunk based streams */
1226 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1228 if( p_stream->b_activated && !p_stream->i_samplesize )
1229 /* if( p_stream->b_activated ) */
1231 AVI_TrackSeek( p_demux, i_stream, i_date );
1232 p_sys->i_time = __MAX( AVI_GetPTS( p_stream ),
1239 i_date = p_sys->i_time;
1241 /* seek for bytes based streams */
1242 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1244 if( p_stream->b_activated && p_stream->i_samplesize )
1246 AVI_TrackSeek( p_demux, i_stream, i_date );
1247 /* p_sys->i_time = __MAX( AVI_GetPTS( p_stream ), p_sys->i_time );*/
1250 msg_Dbg( p_demux, "seek: "I64Fd" seconds", p_sys->i_time /1000000 );
1251 /* set true movie time */
1253 if( !p_sys->i_time )
1255 p_sys->i_time = i_date;
1262 msg_Err( p_demux, "shouldn't yet be executed" );
1263 return VLC_EGENERIC;
1267 /*****************************************************************************
1269 *****************************************************************************
1271 *****************************************************************************/
1272 static double ControlGetPosition( demux_t *p_demux )
1274 demux_sys_t *p_sys = p_demux->p_sys;
1276 if( p_sys->i_length > 0 )
1278 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1280 else if( stream_Size( p_demux->s ) > 0 )
1286 /* search the more advanced selected es */
1287 for( i = 0; i < p_sys->i_track; i++ )
1289 avi_track_t *tk = p_sys->track[i];
1290 if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1292 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1293 tk->p_index[tk->i_idxposc].i_length + 8;
1300 return (double)i64 / (double)stream_Size( p_demux->s );
1305 static int Control( demux_t *p_demux, int i_query, va_list args )
1307 demux_sys_t *p_sys = p_demux->p_sys;
1315 case DEMUX_GET_POSITION:
1316 pf = (double*)va_arg( args, double * );
1317 *pf = ControlGetPosition( p_demux );
1319 case DEMUX_SET_POSITION:
1320 f = (double)va_arg( args, double );
1321 if( p_sys->b_seekable )
1323 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1324 return Seek( p_demux, i64, (int)(f * 100) );
1328 int64_t i_pos = stream_Size( p_demux->s ) * f;
1329 return stream_Seek( p_demux->s, i_pos );
1332 case DEMUX_GET_TIME:
1333 pi64 = (int64_t*)va_arg( args, int64_t * );
1334 *pi64 = p_sys->i_time;
1337 case DEMUX_SET_TIME:
1341 i64 = (int64_t)va_arg( args, int64_t );
1342 if( p_sys->i_length > 0 )
1344 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1346 else if( p_sys->i_time > 0 )
1348 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1349 (double)i64 / (double)p_sys->i_time );
1351 return Seek( p_demux, i64, i_percent );
1353 case DEMUX_GET_LENGTH:
1354 pi64 = (int64_t*)va_arg( args, int64_t * );
1355 *pi64 = p_sys->i_length * (mtime_t)1000000;
1359 pf = (double*)va_arg( args, double * );
1361 for( i = 0; i < (int)p_sys->i_track; i++ )
1363 avi_track_t *tk = p_sys->track[i];
1364 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1366 *pf = (float)tk->i_rate / (float)tk->i_scale;
1371 case DEMUX_GET_META:
1372 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1373 vlc_meta_Merge( p_meta, p_sys->meta );
1377 return VLC_EGENERIC;
1381 /*****************************************************************************
1382 * Function to convert pts to chunk or byte
1383 *****************************************************************************/
1385 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1390 return (mtime_t)((int64_t)i_pts *
1391 (int64_t)tk->i_rate /
1392 (int64_t)tk->i_scale /
1395 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1397 if( !tk->i_scale || !tk->i_samplesize )
1400 return (mtime_t)((int64_t)i_pts *
1401 (int64_t)tk->i_rate /
1402 (int64_t)tk->i_scale /
1404 (int64_t)tk->i_samplesize );
1407 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1414 i_dpts = (mtime_t)( (int64_t)1000000 *
1416 (int64_t)tk->i_scale /
1417 (int64_t)tk->i_rate );
1419 if( tk->i_samplesize )
1421 return i_dpts / tk->i_samplesize;
1426 static mtime_t AVI_GetPTS( avi_track_t *tk )
1428 if( tk->i_samplesize )
1430 int64_t i_count = 0;
1432 /* we need a valid entry we will emulate one */
1433 if( tk->i_idxposc == tk->i_idxnb )
1437 /* use the last entry */
1438 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1439 + tk->p_index[tk->i_idxnb - 1].i_length;
1444 i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1446 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1450 if( tk->i_cat == AUDIO_ES )
1452 return AVI_GetDPTS( tk, tk->i_blockno );
1456 return AVI_GetDPTS( tk, tk->i_idxposc );
1461 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1463 demux_sys_t *p_sys = p_demux->p_sys;
1464 avi_packet_t avi_pk;
1465 int i_loop_count = 0;
1467 /* find first chunk of i_stream that isn't in index */
1469 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1471 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1472 if( AVI_PacketNext( p_demux ) )
1474 return VLC_EGENERIC;
1479 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1484 if( p_demux->b_die ) return VLC_EGENERIC;
1486 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1488 msg_Warn( p_demux, "cannot get packet header" );
1489 return VLC_EGENERIC;
1491 if( avi_pk.i_stream >= p_sys->i_track ||
1492 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1494 if( AVI_PacketNext( p_demux ) )
1496 return VLC_EGENERIC;
1499 /* Prevents from eating all the CPU with broken files.
1500 * This value should be low enough so that it doesn't
1501 * affect the reading speed too much. */
1502 if( !(++i_loop_count % 1024) )
1504 if( p_demux->b_die ) return VLC_EGENERIC;
1507 if( !(i_loop_count % (1024 * 10)) )
1508 msg_Warn( p_demux, "don't seem to find any data..." );
1513 /* add this chunk to the index */
1516 index.i_id = avi_pk.i_fourcc;
1518 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1520 index.i_pos = avi_pk.i_pos;
1521 index.i_length = avi_pk.i_size;
1522 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1524 if( avi_pk.i_stream == i_stream )
1529 if( AVI_PacketNext( p_demux ) )
1531 return VLC_EGENERIC;
1537 /* be sure that i_ck will be a valid index entry */
1538 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1541 demux_sys_t *p_sys = p_demux->p_sys;
1542 avi_track_t *p_stream = p_sys->track[i_stream];
1544 p_stream->i_idxposc = i_ck;
1545 p_stream->i_idxposb = 0;
1547 if( i_ck >= p_stream->i_idxnb )
1549 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1552 p_stream->i_idxposc++;
1553 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1555 return VLC_EGENERIC;
1558 } while( p_stream->i_idxposc < i_ck );
1564 /* XXX FIXME up to now, we assume that all chunk are one after one */
1565 static int AVI_StreamBytesSet( demux_t *p_demux,
1566 unsigned int i_stream,
1569 demux_sys_t *p_sys = p_demux->p_sys;
1570 avi_track_t *p_stream = p_sys->track[i_stream];
1572 if( ( p_stream->i_idxnb > 0 )
1573 &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1574 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1576 /* index is valid to find the ck */
1577 /* uses dichototmie to be fast enougth */
1578 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1579 int i_idxmax = p_stream->i_idxnb;
1583 if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1585 i_idxmax = i_idxposc ;
1586 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1590 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1591 p_stream->p_index[i_idxposc].i_length <= i_byte)
1593 i_idxmin = i_idxposc ;
1594 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1598 p_stream->i_idxposc = i_idxposc;
1599 p_stream->i_idxposb = i_byte -
1600 p_stream->p_index[i_idxposc].i_lengthtotal;
1609 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1610 p_stream->i_idxposb = 0;
1613 p_stream->i_idxposc++;
1614 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1616 return VLC_EGENERIC;
1619 } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1620 p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1622 p_stream->i_idxposb = i_byte -
1623 p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1628 static int AVI_TrackSeek( demux_t *p_demux,
1632 demux_sys_t *p_sys = p_demux->p_sys;
1633 avi_track_t *tk = p_sys->track[i_stream];
1635 #define p_stream p_sys->track[i_stream]
1638 i_oldpts = AVI_GetPTS( p_stream );
1640 if( !p_stream->i_samplesize )
1642 if( AVI_StreamChunkSet( p_demux,
1644 AVI_PTSToChunk( p_stream, i_date ) ) )
1646 return VLC_EGENERIC;
1649 if( p_stream->i_cat == AUDIO_ES )
1653 for( i = 0; i < tk->i_idxposc; i++ )
1655 if( tk->i_blocksize > 0 )
1657 tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1667 "old:"I64Fd" %s new "I64Fd,
1669 i_oldpts > i_date ? ">" : "<",
1672 if( p_stream->i_cat == VIDEO_ES )
1674 /* search key frame */
1675 if( i_date < i_oldpts )
1677 while( p_stream->i_idxposc > 0 &&
1678 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1681 if( AVI_StreamChunkSet( p_demux,
1683 p_stream->i_idxposc - 1 ) )
1685 return VLC_EGENERIC;
1691 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1692 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1695 if( AVI_StreamChunkSet( p_demux,
1697 p_stream->i_idxposc + 1 ) )
1699 return VLC_EGENERIC;
1707 if( AVI_StreamBytesSet( p_demux,
1709 AVI_PTSToByte( p_stream, i_date ) ) )
1711 return VLC_EGENERIC;
1718 /****************************************************************************
1719 * Return VLC_TRUE if it's a key frame
1720 ****************************************************************************/
1721 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1727 * startcode: 0x00000100 32bits
1728 * framenumber ? 5bits
1729 * piture type 0(I),1(P) 2bits
1731 if( GetDWBE( p_byte ) != 0x00000100 )
1733 /* it's not an msmpegv1 stream, strange...*/
1734 return AVIIF_KEYFRAME;
1736 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1739 case FOURCC_DIV3: /* wmv1 also */
1741 * picture type 0(I),1(P) 2bits
1743 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1745 /* we should find first occurrence of 0x000001b6 (32bits)
1746 * startcode: 0x000001b6 32bits
1747 * piture type 0(I),1(P) 2bits
1749 if( GetDWBE( p_byte ) != 0x000001b6 )
1751 /* not true , need to find the first VOP header */
1752 return AVIIF_KEYFRAME;
1754 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1757 /* I can't do it, so say yes */
1758 return AVIIF_KEYFRAME;
1762 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1767 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1771 /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1775 return VLC_FOURCC('m','r','l','e');
1824 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1828 /****************************************************************************
1830 ****************************************************************************/
1831 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1832 int *pi_number, int *pi_type )
1834 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1837 c1 = ((uint8_t *)&i_id)[0];
1838 c2 = ((uint8_t *)&i_id)[1];
1840 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1842 SET_PTR( pi_number, 100 ); /* > max stream number */
1843 SET_PTR( pi_type, UNKNOWN_ES );
1847 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1848 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1851 SET_PTR( pi_type, AUDIO_ES );
1855 SET_PTR( pi_type, VIDEO_ES );
1858 SET_PTR( pi_type, UNKNOWN_ES );
1865 /****************************************************************************
1867 ****************************************************************************/
1868 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1872 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1874 return VLC_EGENERIC;
1876 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1877 p_pk->i_size = GetDWLE( p_peek + 4 );
1878 p_pk->i_pos = stream_Tell( p_demux->s );
1879 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1881 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1882 p_peek[10], p_peek[11] );
1889 memcpy( p_pk->i_peek, p_peek + 8, 8 );
1891 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
1895 static int AVI_PacketNext( demux_t *p_demux )
1897 avi_packet_t avi_ck;
1900 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
1902 return VLC_EGENERIC;
1905 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
1906 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
1910 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
1911 avi_ck.i_type == AVIFOURCC_AVIX )
1917 i_skip = __EVEN( avi_ck.i_size ) + 8;
1920 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
1922 return VLC_EGENERIC;
1927 static int AVI_PacketRead( demux_t *p_demux,
1929 block_t **pp_frame )
1933 i_size = __EVEN( p_pk->i_size + 8 );
1935 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
1937 return VLC_EGENERIC;
1939 (*pp_frame)->p_buffer += 8;
1940 (*pp_frame)->i_buffer -= 8;
1942 if( i_size != p_pk->i_size + 8 )
1944 (*pp_frame)->i_buffer--;
1950 static int AVI_PacketSearch( demux_t *p_demux )
1952 demux_sys_t *p_sys = p_demux->p_sys;
1953 avi_packet_t avi_pk;
1958 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
1960 return VLC_EGENERIC;
1962 AVI_PacketGetHeader( p_demux, &avi_pk );
1963 if( avi_pk.i_stream < p_sys->i_track &&
1964 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
1968 switch( avi_pk.i_fourcc )
1970 case AVIFOURCC_JUNK:
1971 case AVIFOURCC_LIST:
1972 case AVIFOURCC_RIFF:
1973 case AVIFOURCC_idx1:
1977 /* Prevents from eating all the CPU with broken files.
1978 * This value should be low enough so that it doesn't affect the
1979 * reading speed too much (not that we care much anyway because
1980 * this code is called only on broken files). */
1981 if( !(++i_count % 1024) )
1983 if( p_demux->b_die ) return VLC_EGENERIC;
1986 if( !(i_count % (1024 * 10)) )
1987 msg_Warn( p_demux, "trying to resync..." );
1992 /****************************************************************************
1994 ****************************************************************************/
1995 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
1997 avi_entry_t *p_index)
1999 avi_track_t *tk = p_sys->track[i_stream];
2001 /* Update i_movi_lastchunk_pos */
2002 if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2004 p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2008 if( tk->i_idxnb >= tk->i_idxmax )
2010 tk->i_idxmax += 16384;
2011 tk->p_index = realloc( tk->p_index,
2012 tk->i_idxmax * sizeof( avi_entry_t ) );
2013 if( tk->p_index == NULL )
2018 /* calculate cumulate length */
2019 if( tk->i_idxnb > 0 )
2021 p_index->i_lengthtotal =
2022 tk->p_index[tk->i_idxnb - 1].i_length +
2023 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2027 p_index->i_lengthtotal = 0;
2030 tk->p_index[tk->i_idxnb++] = *p_index;
2033 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2035 demux_sys_t *p_sys = p_demux->p_sys;
2037 avi_chunk_list_t *p_riff;
2038 avi_chunk_list_t *p_movi;
2039 avi_chunk_idx1_t *p_idx1;
2041 unsigned int i_stream;
2042 unsigned int i_index;
2046 vlc_bool_t b_keyset[100];
2048 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2049 p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2050 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2054 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2055 return VLC_EGENERIC;
2058 /* *** calculate offset *** */
2059 /* Well, avi is __SHIT__ so test more than one entry
2060 * (needed for some avi files) */
2062 for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2064 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2066 i_offset = p_movi->i_chunk_pos + 8;
2071 /* Reset b_keyset */
2072 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2073 b_keyset[i_stream] = VLC_FALSE;
2075 for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2079 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2082 if( i_stream < p_sys->i_track &&
2083 i_cat == p_sys->track[i_stream]->i_cat )
2086 index.i_id = p_idx1->entry[i_index].i_fourcc;
2088 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2089 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2090 index.i_length = p_idx1->entry[i_index].i_length;
2091 AVI_IndexAddEntry( p_sys, i_stream, &index );
2093 if( index.i_flags&AVIIF_KEYFRAME )
2094 b_keyset[i_stream] = VLC_TRUE;
2098 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2100 if( !b_keyset[i_stream] )
2102 avi_track_t *tk = p_sys->track[i_stream];
2104 msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2105 for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2106 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2112 static void __Parse_indx( demux_t *p_demux,
2114 avi_chunk_indx_t *p_indx )
2116 demux_sys_t *p_sys = p_demux->p_sys;
2120 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2121 if( p_indx->i_indexsubtype == 0 )
2123 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2125 index.i_id = p_indx->i_id;
2126 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2127 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2128 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2130 AVI_IndexAddEntry( p_sys, i_stream, &index );
2133 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2135 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2137 index.i_id = p_indx->i_id;
2138 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2139 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2140 index.i_length = p_indx->idx.field[i].i_size;
2142 AVI_IndexAddEntry( p_sys, i_stream, &index );
2147 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2151 static void AVI_IndexLoad_indx( demux_t *p_demux )
2153 demux_sys_t *p_sys = p_demux->p_sys;
2154 unsigned int i_stream;
2157 avi_chunk_list_t *p_riff;
2158 avi_chunk_list_t *p_hdrl;
2160 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2161 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2163 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2165 avi_chunk_list_t *p_strl;
2166 avi_chunk_indx_t *p_indx;
2168 #define p_stream p_sys->track[i_stream]
2169 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2170 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2174 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2179 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2181 __Parse_indx( p_demux, i_stream, p_indx );
2183 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2186 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2188 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2189 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2193 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2198 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2204 static void AVI_IndexLoad( demux_t *p_demux )
2206 demux_sys_t *p_sys = p_demux->p_sys;
2207 unsigned int i_stream;
2209 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2211 p_sys->track[i_stream]->i_idxnb = 0;
2212 p_sys->track[i_stream]->i_idxmax = 0;
2213 p_sys->track[i_stream]->p_index = NULL;
2218 AVI_IndexLoad_indx( p_demux );
2220 else if( AVI_IndexLoad_idx1( p_demux ) )
2222 /* try indx if idx1 failed as some "normal" file have indx too */
2223 AVI_IndexLoad_indx( p_demux );
2226 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2228 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2229 i_stream, p_sys->track[i_stream]->i_idxnb );
2233 static void AVI_IndexCreate( demux_t *p_demux )
2235 demux_sys_t *p_sys = p_demux->p_sys;
2237 avi_chunk_list_t *p_riff;
2238 avi_chunk_list_t *p_movi;
2240 unsigned int i_stream;
2243 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2244 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2248 msg_Err( p_demux, "cannot find p_movi" );
2252 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2254 p_sys->track[i_stream]->i_idxnb = 0;
2255 p_sys->track[i_stream]->i_idxmax = 0;
2256 p_sys->track[i_stream]->p_index = NULL;
2258 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2259 stream_Size( p_demux->s ) );
2261 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2262 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2265 /* Only show dialog if AVI is > 10MB */
2266 p_demux->p_sys->i_dialog_id = -1;
2267 if( stream_Size( p_demux->s ) > 10000000 )
2269 p_demux->p_sys->i_dialog_id = intf_UserProgress( p_demux,
2270 _( "Fixing AVI Index" ),
2271 _( "Creating AVI Index ..." ),
2273 p_demux->p_sys->last_update = mdate();
2280 if( p_demux->b_die )
2285 /* Don't update dialog too often */
2286 if( p_demux->p_sys->i_dialog_id > 0 &&
2287 mdate() - p_demux->p_sys->last_update > 100000 )
2289 int64_t i_pos = stream_Tell( p_demux->s )* 100 /
2290 stream_Size( p_demux->s );
2291 float f_pos = (float)i_pos;
2292 p_demux->p_sys->last_update = mdate();
2293 intf_UserProgressUpdate( p_demux, p_demux->p_sys->i_dialog_id,
2294 _( "Creating AVI Index ..." ), f_pos );
2297 if( AVI_PacketGetHeader( p_demux, &pk ) )
2301 if( pk.i_stream < p_sys->i_track &&
2302 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2305 index.i_id = pk.i_fourcc;
2307 AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2308 index.i_pos = pk.i_pos;
2309 index.i_length = pk.i_size;
2310 AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2314 switch( pk.i_fourcc )
2316 case AVIFOURCC_idx1:
2319 avi_chunk_list_t *p_sysx;
2320 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2321 AVIFOURCC_RIFF, 1 );
2323 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2324 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24))
2331 case AVIFOURCC_RIFF:
2332 msg_Dbg( p_demux, "new RIFF chunk found" );
2334 case AVIFOURCC_JUNK:
2337 msg_Warn( p_demux, "need resync, probably broken avi" );
2338 if( AVI_PacketSearch( p_demux ) )
2340 msg_Warn( p_demux, "lost sync, abord index creation" );
2346 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2347 AVI_PacketNext( p_demux ) )
2354 if( p_demux->p_sys->i_dialog_id > 0 )
2356 intf_UserHide( p_demux, p_demux->p_sys->i_dialog_id );
2359 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2362 "stream[%d] creating %d index entries",
2364 p_sys->track[i_stream]->i_idxnb );
2368 /*****************************************************************************
2370 *****************************************************************************/
2371 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2373 demux_sys_t *p_sys = p_demux->p_sys;
2375 int b_end = VLC_TRUE;
2377 for( i = 0; i < p_sys->i_track; i++ )
2379 avi_track_t *tk = p_sys->track[i];
2380 if( tk->i_idxposc >= tk->i_idxnb )
2382 tk->b_activated = VLC_FALSE;
2383 es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, VLC_FALSE );
2393 /****************************************************************************
2394 * AVI_MovieGetLength give max streams length in second
2395 ****************************************************************************/
2396 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2398 demux_sys_t *p_sys = p_demux->p_sys;
2399 mtime_t i_maxlength = 0;
2402 for( i = 0; i < p_sys->i_track; i++ )
2404 avi_track_t *tk = p_sys->track[i];
2407 /* fix length for each stream */
2408 if( tk->i_idxnb < 1 || !tk->p_index )
2413 if( tk->i_samplesize )
2415 i_length = AVI_GetDPTS( tk,
2416 tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2417 tk->p_index[tk->i_idxnb-1].i_length );
2421 i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2423 i_length /= (mtime_t)1000000; /* in seconds */
2426 "stream[%d] length:"I64Fd" (based on index)",
2429 i_maxlength = __MAX( i_maxlength, i_length );