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 *****************************************************************************/
32 #include <vlc_demux.h>
34 #include <vlc_interface.h>
37 #include <vlc_codecs.h>
38 #include <vlc_charset.h>
42 /*****************************************************************************
44 *****************************************************************************/
46 #define INTERLEAVE_TEXT N_("Force interleaved method" )
47 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method." )
49 #define INDEX_TEXT N_("Force index creation")
50 #define INDEX_LONGTEXT N_( \
51 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
52 "or incomplete (not seekable)." )
54 static int Open ( vlc_object_t * );
55 static void Close( vlc_object_t * );
57 static int pi_index[] = {0,1,2};
59 static const char *ppsz_indexes[] = { N_("Ask"), N_("Always fix"),
63 set_shortname( "AVI" );
64 set_description( _("AVI demuxer") );
65 set_capability( "demux", 212 );
66 set_category( CAT_INPUT );
67 set_subcategory( SUBCAT_INPUT_DEMUX );
69 add_bool( "avi-interleaved", 0, NULL,
70 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, true );
71 add_integer( "avi-index", 0, NULL,
72 INDEX_TEXT, INDEX_LONGTEXT, false );
73 change_integer_list( pi_index, ppsz_indexes, 0 );
75 set_callbacks( Open, Close );
78 /*****************************************************************************
80 *****************************************************************************/
81 static int Control ( demux_t *, int, va_list );
82 static int Seek ( demux_t *, mtime_t, int );
83 static int Demux_Seekable ( demux_t * );
84 static int Demux_UnSeekable( demux_t * );
86 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
90 vlc_fourcc_t i_fourcc;
93 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
95 uint8_t i_peek[8]; /* first 8 bytes */
97 unsigned int i_stream;
108 uint32_t i_lengthtotal;
116 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
117 vlc_fourcc_t i_codec;
126 avi_entry_t *p_index;
127 unsigned int i_idxnb;
128 unsigned int i_idxmax;
130 unsigned int i_idxposc; /* numero of chunk */
131 unsigned int i_idxposb; /* byte in the current chunk */
133 /* extra information given to the decoder */
136 /* For VBR audio only */
137 unsigned int i_blockno;
138 unsigned int i_blocksize;
140 /* For muxed streams */
141 stream_t *p_out_muxed;
156 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
158 /* number of streams and information */
159 unsigned int i_track;
170 static inline off_t __EVEN( off_t i )
172 return (i & 1) ? i + 1 : i;
175 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
176 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
177 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
178 static mtime_t AVI_GetPTS ( avi_track_t * );
181 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
182 static int AVI_StreamChunkSet ( demux_t *,
183 unsigned int i_stream, unsigned int i_ck );
184 static int AVI_StreamBytesSet ( demux_t *,
185 unsigned int i_stream, off_t i_byte );
187 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
188 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
190 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
191 static int AVI_PacketNext ( demux_t * );
192 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
193 static int AVI_PacketSearch ( demux_t * );
195 static void AVI_IndexLoad ( demux_t * );
196 static void AVI_IndexCreate ( demux_t * );
197 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
199 static mtime_t AVI_MovieGetLength( demux_t * );
201 /*****************************************************************************
203 *****************************************************************************/
204 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
205 static int AVI_TrackStopFinishedStreams( demux_t *);
208 - For VBR mp3 stream:
209 count blocks by rounded-up chunksizes instead of chunks
210 we need full emulation of dshow avi demuxer bugs :(
211 fixes silly nandub-style a-v delaying in avi with vbr mp3...
212 (from mplayer 2002/08/02)
216 /*****************************************************************************
217 * Open: check file and initializes AVI structures
218 *****************************************************************************/
219 static int Open( vlc_object_t * p_this )
221 demux_t *p_demux = (demux_t *)p_this;
224 bool b_index = false;
228 avi_chunk_list_t *p_riff = (avi_chunk_list_t*)&ck_riff;
229 avi_chunk_list_t *p_hdrl, *p_movi;
230 avi_chunk_avih_t *p_avih;
232 unsigned int i_track;
233 unsigned int i, i_peeker;
235 const uint8_t *p_peek;
237 /* Is it an avi file ? */
238 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
240 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
242 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
244 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
248 if( i_peeker == 188 )
253 /* Initialize input structures. */
254 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
255 memset( p_sys, 0, sizeof( demux_sys_t ) );
258 p_sys->i_movi_lastchunk_pos = 0;
259 p_sys->b_odml = false;
260 p_sys->b_muxed = false;
265 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
267 p_demux->pf_control = Control;
268 p_demux->pf_demux = Demux_Seekable;
270 /* For unseekable stream, automaticaly use Demux_UnSeekable */
271 if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
273 p_demux->pf_demux = Demux_UnSeekable;
278 stream_Read( p_demux->s, NULL, i_peeker );
281 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
283 msg_Err( p_demux, "avi module discarded (invalid file)" );
287 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
289 unsigned int i_count =
290 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
292 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
293 for( i = 1; i < i_count; i++ )
295 avi_chunk_list_t *p_sysx;
297 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
298 if( p_sysx->i_type == AVIFOURCC_AVIX )
300 msg_Warn( p_demux, "detected OpenDML file" );
301 p_sys->b_odml = true;
307 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
308 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
309 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
311 if( !p_hdrl || !p_movi )
313 msg_Err( p_demux, "avi module discarded (invalid file)" );
317 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
319 msg_Err( p_demux, "cannot find avih chunk" );
322 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
323 if( p_avih->i_streams != i_track )
326 "found %d stream but %d are declared",
327 i_track, p_avih->i_streams );
331 msg_Err( p_demux, "no stream defined!" );
335 /* print information on streams */
336 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
338 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
339 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
340 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
341 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
342 if( ( p_sys->meta = vlc_meta_New() ) )
345 sprintf( buffer, "%s%s%s%s",
346 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
347 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
348 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
349 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
350 vlc_meta_SetSetting( p_sys->meta, buffer );
353 /* now read info on each stream and create ES */
354 for( i = 0 ; i < i_track; i++ )
356 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
359 msg_Err( p_demux, "Out of memory" );
363 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
364 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
365 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
366 avi_chunk_strf_auds_t *p_auds = NULL;
367 avi_chunk_strf_vids_t *p_vids = NULL;
370 memset( tk, 0, sizeof( avi_track_t ) );
372 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
373 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
375 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
377 msg_Warn( p_demux, "stream[%d] incomplete", i );
381 tk->i_rate = p_strh->i_rate;
382 tk->i_scale = p_strh->i_scale;
383 tk->i_samplesize = p_strh->i_samplesize;
384 msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
385 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
387 switch( p_strh->i_type )
389 case( AVIFOURCC_auds ):
390 tk->i_cat = AUDIO_ES;
391 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
392 p_auds->p_wf->wFormatTag );
393 if( tk->i_codec == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
394 tk->i_blocksize = 0; /* fix vorbis VBR decoding */
395 else if( ( tk->i_blocksize = p_auds->p_wf->nBlockAlign ) == 0 )
397 if( p_auds->p_wf->wFormatTag == 1 )
399 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
406 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
408 fmt.audio.i_channels = p_auds->p_wf->nChannels;
409 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
410 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
411 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
412 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
413 fmt.b_packetized = !tk->i_blocksize;
416 "stream[%d] audio(0x%x) %d channels %dHz %dbits",
417 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
418 p_auds->p_wf->nSamplesPerSec,
419 p_auds->p_wf->wBitsPerSample );
421 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
422 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
423 fmt.p_extra = tk->p_extra = malloc( fmt.i_extra );
424 if( !fmt.p_extra ) goto error;
425 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
427 /* Rewrite the vorbis headers from Xiph-like format
428 * to VLC internal format
431 * - 1st byte == N, is the number of packets - 1
432 * - Following bytes are the size of the N first packets:
433 * while( *p == 0xFF ) { size += 0xFF; p++ } size += *p;
434 * (the size of the last packet is the size of remaining
435 * data in the buffer)
436 * - Finally, all the packets concatenated
439 * - Size of the packet on 16 bits (big endian) FIXME: should be 32 bits to be safe
440 * - The packet itself
441 * - Size of the next packet, and so on ...
444 if( tk->i_codec == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
446 uint8_t *p_extra = fmt.p_extra;
447 size_t i_extra = fmt.i_extra;
449 if( i_extra <= 1 ) break;
450 if( *p_extra++ != 2 ) break; /* 3 packets - 1 = 2 */
453 size_t i_identifier_len = 0;
454 while( *p_extra == 0xFF )
456 i_identifier_len += 0xFF;
458 if( --i_extra <= 1 ) break;
460 i_identifier_len += *p_extra++;
461 if( i_identifier_len > --i_extra ) break;
463 size_t i_comment_len = 0;
464 while( *p_extra == 0xFF )
466 i_comment_len += 0xFF;
468 if( --i_extra <= 1 ) break;
470 i_comment_len += *p_extra++;
471 if( i_comment_len > --i_extra ) break;
472 size_t i_cookbook_len = i_extra;
474 size_t i_headers_size = 3 * 2 + i_identifier_len +
475 i_comment_len + i_cookbook_len;
476 uint8_t *p_out = malloc( i_headers_size );
477 if( !p_out ) goto error;
479 fmt.p_extra = tk->p_extra = p_out;
480 fmt.i_extra = i_headers_size;
481 #define copy_packet( len ) \
482 *p_out++ = len >> 8; \
483 *p_out++ = len & 0xFF; \
484 memcpy( p_out, p_extra, len ); \
487 copy_packet( i_identifier_len );
488 copy_packet( i_comment_len );
489 copy_packet( i_cookbook_len );
495 case( AVIFOURCC_vids ):
496 tk->i_cat = VIDEO_ES;
497 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
498 p_vids->p_bih->biCompression );
499 if( p_vids->p_bih->biCompression == 0x00 )
501 switch( p_vids->p_bih->biBitCount )
504 tk->i_codec = VLC_FOURCC('R','V','3','2');
507 tk->i_codec = VLC_FOURCC('R','V','2','4');
510 /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
513 tk->i_codec = VLC_FOURCC('R','V','1','5');
516 tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
519 tk->i_codec = VLC_FOURCC('Y','8','0','0');
522 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
524 if( p_vids->p_bih->biBitCount == 24 )
526 /* This is in BGR format */
527 fmt.video.i_bmask = 0x00ff0000;
528 fmt.video.i_gmask = 0x0000ff00;
529 fmt.video.i_rmask = 0x000000ff;
534 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
535 if( tk->i_codec == FOURCC_mp4v &&
536 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
538 fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
541 tk->i_samplesize = 0;
542 fmt.video.i_width = p_vids->p_bih->biWidth;
543 fmt.video.i_height = p_vids->p_bih->biHeight;
544 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
545 fmt.video.i_frame_rate = tk->i_rate;
546 fmt.video.i_frame_rate_base = tk->i_scale;
548 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
549 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
550 fmt.p_extra = &p_vids->p_bih[1];
551 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
552 i, (char*)&p_vids->p_bih->biCompression,
553 p_vids->p_bih->biWidth,
554 p_vids->p_bih->biHeight,
555 p_vids->p_bih->biBitCount,
556 (float)tk->i_rate/(float)tk->i_scale );
558 if( p_vids->p_bih->biCompression == 0x00 )
560 /* RGB DIB are coded from bottom to top */
562 (unsigned int)(-(int)p_vids->p_bih->biHeight);
565 /* Extract palette from extradata if bpp <= 8
566 * (assumes that extradata contains only palette but appears
567 * to be true for all palettized codecs we support) */
568 if( fmt.i_extra && fmt.video.i_bits_per_pixel <= 8 &&
569 fmt.video.i_bits_per_pixel > 0 )
573 fmt.video.p_palette = calloc( sizeof(video_palette_t), 1 );
574 fmt.video.p_palette->i_entries = 1;
576 /* Apparently this is necessary. But why ? */
578 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
579 for( i = 0; i < __MIN(fmt.i_extra/4, 256); i++ )
581 ((uint32_t *)&fmt.video.p_palette->palette[0][0])[i] =
582 GetDWLE((uint32_t*)fmt.p_extra + i);
587 case( AVIFOURCC_txts):
589 tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
590 msg_Dbg( p_demux, "stream[%d] subtitles", i );
591 es_format_Init( &fmt, SPU_ES, tk->i_codec );
594 case( AVIFOURCC_iavs):
595 case( AVIFOURCC_ivas):
596 p_sys->b_muxed = true;
597 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
598 if( p_strh->i_handler == FOURCC_dvsd ||
599 p_strh->i_handler == FOURCC_dvhd ||
600 p_strh->i_handler == FOURCC_dvsl ||
601 p_strh->i_handler == FOURCC_dv25 ||
602 p_strh->i_handler == FOURCC_dv50 )
604 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
605 if( !tk->p_out_muxed )
606 msg_Err( p_demux, "could not load the DV parser" );
612 case( AVIFOURCC_mids):
613 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
616 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
622 /* The charset of p_strn is undefined */
623 EnsureUTF8( p_strn->p_str );
624 fmt.psz_description = strdup( p_strn->p_str );
626 if( tk->p_out_muxed == NULL )
627 tk->p_es = es_out_Add( p_demux->out, &fmt );
628 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
631 if( p_sys->i_track <= 0 )
633 msg_Err( p_demux, "no valid track" );
637 i_do_index = config_GetInt( p_demux, "avi-index" );
638 if( i_do_index == 1 ) /* Always fix */
641 if( p_sys->b_seekable )
643 AVI_IndexCreate( p_demux );
647 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
648 AVI_IndexLoad( p_demux );
653 AVI_IndexLoad( p_demux );
656 /* *** movie length in sec *** */
657 p_sys->i_length = AVI_MovieGetLength( p_demux );
658 if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
659 (mtime_t)p_avih->i_microsecperframe /
662 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
663 "axproximative or will have strange behaviour" );
664 if( i_do_index == 0 && !b_index )
667 i_create = intf_UserYesNo( p_demux, _("AVI Index") ,
668 _( "This AVI file is broken. Seeking will not "
669 "work correctly.\nDo you want to "
670 "try to repair it?\n\nThis might take a long time." ),
671 _( "Repair" ), _( "Don't repair" ), _( "Cancel") );
672 if( i_create == DIALOG_OK_YES )
675 msg_Dbg( p_demux, "Fixing AVI index" );
678 else if( i_create == DIALOG_CANCELLED )
681 vlc_object_kill( p_demux->p_parent );
687 /* fix some BeOS MediaKit generated file */
688 for( i = 0 ; i < p_sys->i_track; i++ )
690 avi_track_t *tk = p_sys->track[i];
691 avi_chunk_list_t *p_strl;
692 avi_chunk_strh_t *p_strh;
693 avi_chunk_strf_auds_t *p_auds;
695 if( tk->i_cat != AUDIO_ES )
699 if( tk->i_idxnb < 1 ||
701 tk->i_samplesize != 0 )
705 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
706 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
707 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
709 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
710 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
712 int64_t i_track_length =
713 tk->p_index[tk->i_idxnb-1].i_length +
714 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
715 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
716 (mtime_t)p_avih->i_microsecperframe;
720 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
723 tk->i_samplesize = 1;
724 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
725 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
729 if( p_sys->b_seekable )
731 /* we have read all chunk so go back to movi */
732 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
734 /* Skip movi header */
735 stream_Read( p_demux->s, NULL, 12 );
737 p_sys->i_movi_begin = p_movi->i_chunk_pos;
743 vlc_meta_Delete( p_sys->meta );
745 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
750 /*****************************************************************************
751 * Close: frees unused data
752 *****************************************************************************/
753 static void Close ( vlc_object_t * p_this )
755 demux_t * p_demux = (demux_t *)p_this;
757 demux_sys_t *p_sys = p_demux->p_sys ;
759 for( i = 0; i < p_sys->i_track; i++ )
761 if( p_sys->track[i] )
763 if( p_sys->track[i]->p_out_muxed )
764 stream_DemuxDelete( p_sys->track[i]->p_out_muxed );
765 free( p_sys->track[i]->p_index );
766 free( p_sys->track[i]->p_extra );
767 free( p_sys->track[i] );
770 free( p_sys->track );
771 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
772 vlc_meta_Delete( p_sys->meta );
777 /*****************************************************************************
778 * Demux_Seekable: reads and demuxes data packets for stream seekable
779 *****************************************************************************
780 * AVIDemux: reads and demuxes data packets
781 *****************************************************************************
782 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
783 *****************************************************************************/
790 off_t i_posf; /* where we will read :
791 if i_idxposb == 0 : begining of chunk (+8 to acces data)
792 else : point on data directly */
793 } avi_track_toread_t;
795 static int Demux_Seekable( demux_t *p_demux )
797 demux_sys_t *p_sys = p_demux->p_sys;
799 unsigned int i_track_count = 0;
800 unsigned int i_track;
802 /* cannot be more than 100 stream (dcXX or wbXX) */
803 avi_track_toread_t toread[100];
806 /* detect new selected/unselected streams */
807 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
809 avi_track_t *tk = p_sys->track[i_track];
812 if( p_sys->b_muxed && tk->p_out_muxed )
815 tk->b_activated = true;
819 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
820 if( b && !tk->b_activated )
822 if( p_sys->b_seekable)
824 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
826 tk->b_activated = true;
828 else if( !b && tk->b_activated )
830 tk->b_activated = false;
838 if( i_track_count <= 0 )
840 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
842 p_sys->i_time += 25*1000; /* read 25ms */
845 if( p_sys->i_time >= i_length )
849 msg_Warn( p_demux, "no track selected, exiting..." );
853 /* wait for the good time */
854 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
855 p_sys->i_time += 25*1000; /* read 25ms */
858 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
860 avi_track_t *tk = p_sys->track[i_track];
863 toread[i_track].b_ok = tk->b_activated;
864 if( tk->i_idxposc < tk->i_idxnb )
866 toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
867 if( tk->i_idxposb > 0 )
869 toread[i_track].i_posf += 8 + tk->i_idxposb;
874 toread[i_track].i_posf = -1;
877 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
879 if( tk->i_samplesize )
881 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
885 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
890 toread[i_track].i_toread *= -1;
905 /* search for first chunk to be read */
906 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
908 if( !toread[i].b_ok ||
909 AVI_GetDPTS( p_sys->track[i],
910 toread[i].i_toread ) <= -25 * 1000 )
915 if( toread[i].i_toread > 0 )
917 b_done = false; /* not yet finished */
919 if( toread[i].i_posf > 0 )
921 if( i_pos == -1 || i_pos > toread[i].i_posf )
924 i_pos = toread[i].i_posf;
936 int i_loop_count = 0;
938 /* no valid index, we will parse directly the stream
939 * in case we fail we will disable all finished stream */
940 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
942 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
943 if( AVI_PacketNext( p_demux ) )
945 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
950 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
957 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
960 "cannot get packet header, track disabled" );
961 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
963 if( avi_pk.i_stream >= p_sys->i_track ||
964 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
966 if( AVI_PacketNext( p_demux ) )
969 "cannot skip packet, track disabled" );
970 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
973 /* Prevents from eating all the CPU with broken files.
974 * This value should be low enough so that it doesn't
975 * affect the reading speed too much. */
976 if( !(++i_loop_count % 1024) )
978 if( p_demux->b_die ) return -1;
981 if( !(i_loop_count % (1024 * 10)) )
983 "don't seem to find any data..." );
989 /* add this chunk to the index */
992 index.i_id = avi_pk.i_fourcc;
994 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
996 index.i_pos = avi_pk.i_pos;
997 index.i_length = avi_pk.i_size;
998 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1000 i_track = avi_pk.i_stream;
1001 tk = p_sys->track[i_track];
1002 /* do we will read this data ? */
1003 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1009 if( AVI_PacketNext( p_demux ) )
1012 "cannot skip packet, track disabled" );
1013 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1022 stream_Seek( p_demux->s, i_pos );
1025 /* Set the track to use */
1026 tk = p_sys->track[i_track];
1028 /* read thoses data */
1029 if( tk->i_samplesize )
1031 unsigned int i_toread;
1033 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1035 if( tk->i_samplesize > 1 )
1037 i_toread = tk->i_samplesize;
1041 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1042 i_toread = __MAX( i_toread, 100 );
1045 i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
1051 i_size = tk->p_index[tk->i_idxposc].i_length;
1054 if( tk->i_idxposb == 0 )
1056 i_size += 8; /* need to read and skip header */
1059 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1061 msg_Warn( p_demux, "failed reading data" );
1062 tk->b_activated = false;
1063 toread[i_track].b_ok = false;
1066 if( i_size % 2 ) /* read was padded on word boundary */
1068 p_frame->i_buffer--;
1071 if( tk->i_idxposb == 0 )
1073 p_frame->p_buffer += 8;
1074 p_frame->i_buffer -= 8;
1076 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1077 if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1079 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1083 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1087 if( tk->i_samplesize )
1089 if( tk->i_idxposb == 0 )
1093 toread[i_track].i_toread -= i_size;
1094 tk->i_idxposb += i_size;
1095 if( tk->i_idxposb >=
1096 tk->p_index[tk->i_idxposc].i_length )
1104 int i_length = tk->p_index[tk->i_idxposc].i_length;
1107 if( tk->i_cat == AUDIO_ES )
1109 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1111 toread[i_track].i_toread--;
1114 if( tk->i_idxposc < tk->i_idxnb)
1116 toread[i_track].i_posf =
1117 tk->p_index[tk->i_idxposc].i_pos;
1118 if( tk->i_idxposb > 0 )
1120 toread[i_track].i_posf += 8 + tk->i_idxposb;
1126 toread[i_track].i_posf = -1;
1129 b_stream = true; /* at least one read succeed */
1131 if( tk->i_cat != VIDEO_ES )
1132 p_frame->i_dts = p_frame->i_pts;
1135 p_frame->i_dts = p_frame->i_pts;
1139 //p_pes->i_rate = p_demux->stream.control.i_rate;
1140 if( tk->p_out_muxed )
1141 stream_DemuxSend( tk->p_out_muxed, p_frame );
1143 es_out_Send( p_demux->out, tk->p_es, p_frame );
1148 /*****************************************************************************
1149 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1150 *****************************************************************************
1151 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1152 *****************************************************************************/
1153 static int Demux_UnSeekable( demux_t *p_demux )
1155 demux_sys_t *p_sys = p_demux->p_sys;
1156 avi_track_t *p_stream_master = NULL;
1157 unsigned int i_stream;
1158 unsigned int i_packet;
1160 if( p_sys->b_muxed )
1162 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1163 return VLC_EGENERIC;
1166 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1168 /* *** find master stream for data packet skipping algo *** */
1169 /* *** -> first video, if any, or first audio ES *** */
1170 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1172 avi_track_t *tk = p_sys->track[i_stream];
1175 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1177 if( b && tk->i_cat == VIDEO_ES )
1179 p_stream_master = tk;
1183 p_stream_master = tk;
1187 if( !p_stream_master )
1189 msg_Warn( p_demux, "no more stream selected" );
1193 p_sys->i_time = AVI_GetPTS( p_stream_master );
1195 for( i_packet = 0; i_packet < 10; i_packet++)
1197 #define p_stream p_sys->track[avi_pk.i_stream]
1199 avi_packet_t avi_pk;
1201 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1206 if( avi_pk.i_stream >= p_sys->i_track ||
1207 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1209 /* we haven't found an audio or video packet:
1210 * - we have seek, found first next packet
1211 * - others packets could be found, skip them
1213 switch( avi_pk.i_fourcc )
1215 case AVIFOURCC_JUNK:
1216 case AVIFOURCC_LIST:
1217 case AVIFOURCC_RIFF:
1218 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1219 case AVIFOURCC_idx1:
1222 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1224 return( 0 ); /* eof */
1227 "seems to have lost position, resync" );
1228 if( AVI_PacketSearch( p_demux ) )
1230 msg_Err( p_demux, "resync failed" );
1237 /* check for time */
1238 if( __ABS( AVI_GetPTS( p_stream ) -
1239 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1241 /* load it and send to decoder */
1243 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1247 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1249 if( avi_pk.i_cat != VIDEO_ES )
1250 p_frame->i_dts = p_frame->i_pts;
1253 p_frame->i_dts = p_frame->i_pts;
1257 //p_pes->i_rate = p_demux->stream.control.i_rate;
1258 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1262 if( AVI_PacketNext( p_demux ) )
1268 /* *** update stream time position *** */
1269 if( p_stream->i_samplesize )
1271 p_stream->i_idxposb += avi_pk.i_size;
1275 if( p_stream->i_cat == AUDIO_ES )
1277 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1279 p_stream->i_idxposc++;
1289 /*****************************************************************************
1290 * Seek: goto to i_date or i_percent
1291 *****************************************************************************/
1292 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1295 demux_sys_t *p_sys = p_demux->p_sys;
1296 unsigned int i_stream;
1297 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1298 i_date / 1000000, i_percent );
1300 if( p_sys->b_seekable )
1302 if( !p_sys->i_length )
1304 avi_track_t *p_stream;
1307 /* use i_percent to create a true i_date */
1308 msg_Warn( p_demux, "seeking without index at %d%%"
1309 " only works for interleaved files", i_percent );
1310 if( i_percent >= 100 )
1312 msg_Warn( p_demux, "cannot seek so far !" );
1313 return VLC_EGENERIC;
1315 i_percent = __MAX( i_percent, 0 );
1317 /* try to find chunk that is at i_percent or the file */
1318 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1319 p_sys->i_movi_begin );
1320 /* search first selected stream */
1321 for( i_stream = 0, p_stream = NULL;
1322 i_stream < p_sys->i_track; i_stream++ )
1324 p_stream = p_sys->track[i_stream];
1325 if( p_stream->b_activated )
1330 if( !p_stream || !p_stream->b_activated )
1332 msg_Warn( p_demux, "cannot find any selected stream" );
1333 return VLC_EGENERIC;
1336 /* be sure that the index exist */
1337 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1339 msg_Warn( p_demux, "cannot seek" );
1340 return VLC_EGENERIC;
1343 while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1344 p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1346 /* search after i_idxposc */
1347 if( AVI_StreamChunkSet( p_demux,
1348 i_stream, p_stream->i_idxposc + 1 ) )
1350 msg_Warn( p_demux, "cannot seek" );
1351 return VLC_EGENERIC;
1355 i_date = AVI_GetPTS( p_stream );
1356 /* TODO better support for i_samplesize != 0 */
1357 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1361 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1363 avi_track_t *p_stream = p_sys->track[i_stream];
1365 if( !p_stream->b_activated )
1368 AVI_TrackSeek( p_demux, i_stream, i_date );
1370 p_sys->i_time = i_date;
1371 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1376 msg_Err( p_demux, "shouldn't yet be executed" );
1377 return VLC_EGENERIC;
1381 /*****************************************************************************
1383 *****************************************************************************/
1384 static double ControlGetPosition( demux_t *p_demux )
1386 demux_sys_t *p_sys = p_demux->p_sys;
1388 if( p_sys->i_length > 0 )
1390 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1392 else if( stream_Size( p_demux->s ) > 0 )
1398 /* search the more advanced selected es */
1399 for( i = 0; i < p_sys->i_track; i++ )
1401 avi_track_t *tk = p_sys->track[i];
1402 if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1404 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1405 tk->p_index[tk->i_idxposc].i_length + 8;
1412 return (double)i64 / stream_Size( p_demux->s );
1417 static int Control( demux_t *p_demux, int i_query, va_list args )
1419 demux_sys_t *p_sys = p_demux->p_sys;
1427 case DEMUX_GET_POSITION:
1428 pf = (double*)va_arg( args, double * );
1429 *pf = ControlGetPosition( p_demux );
1431 case DEMUX_SET_POSITION:
1432 f = (double)va_arg( args, double );
1433 if( p_sys->b_seekable )
1435 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1436 return Seek( p_demux, i64, (int)(f * 100) );
1440 int64_t i_pos = stream_Size( p_demux->s ) * f;
1441 return stream_Seek( p_demux->s, i_pos );
1444 case DEMUX_GET_TIME:
1445 pi64 = (int64_t*)va_arg( args, int64_t * );
1446 *pi64 = p_sys->i_time;
1449 case DEMUX_SET_TIME:
1453 i64 = (int64_t)va_arg( args, int64_t );
1454 if( p_sys->i_length > 0 )
1456 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1458 else if( p_sys->i_time > 0 )
1460 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1461 (double)i64 / (double)p_sys->i_time );
1463 return Seek( p_demux, i64, i_percent );
1465 case DEMUX_GET_LENGTH:
1466 pi64 = (int64_t*)va_arg( args, int64_t * );
1467 *pi64 = p_sys->i_length * (mtime_t)1000000;
1471 pf = (double*)va_arg( args, double * );
1473 for( i = 0; i < (int)p_sys->i_track; i++ )
1475 avi_track_t *tk = p_sys->track[i];
1476 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1478 *pf = (float)tk->i_rate / (float)tk->i_scale;
1483 case DEMUX_GET_META:
1484 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1485 vlc_meta_Merge( p_meta, p_sys->meta );
1489 return VLC_EGENERIC;
1493 /*****************************************************************************
1494 * Function to convert pts to chunk or byte
1495 *****************************************************************************/
1497 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1502 return (mtime_t)((int64_t)i_pts *
1503 (int64_t)tk->i_rate /
1504 (int64_t)tk->i_scale /
1507 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1509 if( !tk->i_scale || !tk->i_samplesize )
1512 return (mtime_t)((int64_t)i_pts *
1513 (int64_t)tk->i_rate /
1514 (int64_t)tk->i_scale /
1516 (int64_t)tk->i_samplesize );
1519 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1526 i_dpts = (mtime_t)( (int64_t)1000000 *
1528 (int64_t)tk->i_scale /
1529 (int64_t)tk->i_rate );
1531 if( tk->i_samplesize )
1533 return i_dpts / tk->i_samplesize;
1538 static mtime_t AVI_GetPTS( avi_track_t *tk )
1540 if( tk->i_samplesize )
1542 int64_t i_count = 0;
1544 /* we need a valid entry we will emulate one */
1545 if( tk->i_idxposc == tk->i_idxnb )
1549 /* use the last entry */
1550 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1551 + tk->p_index[tk->i_idxnb - 1].i_length;
1556 i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1558 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1562 if( tk->i_cat == AUDIO_ES )
1564 return AVI_GetDPTS( tk, tk->i_blockno );
1568 return AVI_GetDPTS( tk, tk->i_idxposc );
1573 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1575 demux_sys_t *p_sys = p_demux->p_sys;
1576 avi_packet_t avi_pk;
1577 int i_loop_count = 0;
1579 /* find first chunk of i_stream that isn't in index */
1581 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1583 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1584 if( AVI_PacketNext( p_demux ) )
1586 return VLC_EGENERIC;
1591 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1596 if( p_demux->b_die ) return VLC_EGENERIC;
1598 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1600 msg_Warn( p_demux, "cannot get packet header" );
1601 return VLC_EGENERIC;
1603 if( avi_pk.i_stream >= p_sys->i_track ||
1604 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1606 if( AVI_PacketNext( p_demux ) )
1608 return VLC_EGENERIC;
1611 /* Prevents from eating all the CPU with broken files.
1612 * This value should be low enough so that it doesn't
1613 * affect the reading speed too much. */
1614 if( !(++i_loop_count % 1024) )
1616 if( p_demux->b_die ) return VLC_EGENERIC;
1619 if( !(i_loop_count % (1024 * 10)) )
1620 msg_Warn( p_demux, "don't seem to find any data..." );
1625 /* add this chunk to the index */
1628 index.i_id = avi_pk.i_fourcc;
1630 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1632 index.i_pos = avi_pk.i_pos;
1633 index.i_length = avi_pk.i_size;
1634 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1636 if( avi_pk.i_stream == i_stream )
1641 if( AVI_PacketNext( p_demux ) )
1643 return VLC_EGENERIC;
1649 /* be sure that i_ck will be a valid index entry */
1650 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1653 demux_sys_t *p_sys = p_demux->p_sys;
1654 avi_track_t *p_stream = p_sys->track[i_stream];
1656 p_stream->i_idxposc = i_ck;
1657 p_stream->i_idxposb = 0;
1659 if( i_ck >= p_stream->i_idxnb )
1661 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1664 p_stream->i_idxposc++;
1665 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1667 return VLC_EGENERIC;
1670 } while( p_stream->i_idxposc < i_ck );
1676 /* XXX FIXME up to now, we assume that all chunk are one after one */
1677 static int AVI_StreamBytesSet( demux_t *p_demux,
1678 unsigned int i_stream,
1681 demux_sys_t *p_sys = p_demux->p_sys;
1682 avi_track_t *p_stream = p_sys->track[i_stream];
1684 if( ( p_stream->i_idxnb > 0 )
1685 &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1686 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1688 /* index is valid to find the ck */
1689 /* uses dichototmie to be fast enougth */
1690 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1691 int i_idxmax = p_stream->i_idxnb;
1695 if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1697 i_idxmax = i_idxposc ;
1698 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1702 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1703 p_stream->p_index[i_idxposc].i_length <= i_byte)
1705 i_idxmin = i_idxposc ;
1706 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1710 p_stream->i_idxposc = i_idxposc;
1711 p_stream->i_idxposb = i_byte -
1712 p_stream->p_index[i_idxposc].i_lengthtotal;
1721 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1722 p_stream->i_idxposb = 0;
1725 p_stream->i_idxposc++;
1726 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1728 return VLC_EGENERIC;
1731 } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1732 p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1734 p_stream->i_idxposb = i_byte -
1735 p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1740 static int AVI_TrackSeek( demux_t *p_demux,
1744 demux_sys_t *p_sys = p_demux->p_sys;
1745 avi_track_t *tk = p_sys->track[i_stream];
1747 #define p_stream p_sys->track[i_stream]
1750 i_oldpts = AVI_GetPTS( p_stream );
1752 if( !p_stream->i_samplesize )
1754 if( AVI_StreamChunkSet( p_demux,
1756 AVI_PTSToChunk( p_stream, i_date ) ) )
1758 return VLC_EGENERIC;
1761 if( p_stream->i_cat == AUDIO_ES )
1765 for( i = 0; i < tk->i_idxposc; i++ )
1767 if( tk->i_blocksize > 0 )
1769 tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1779 "old:%"PRId64" %s new %"PRId64,
1781 i_oldpts > i_date ? ">" : "<",
1784 if( p_stream->i_cat == VIDEO_ES )
1786 /* search key frame */
1787 //if( i_date < i_oldpts || 1 )
1789 while( p_stream->i_idxposc > 0 &&
1790 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1793 if( AVI_StreamChunkSet( p_demux,
1795 p_stream->i_idxposc - 1 ) )
1797 return VLC_EGENERIC;
1800 if( p_stream->p_es )
1801 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, p_stream->p_es, i_date );
1806 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1807 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1810 if( AVI_StreamChunkSet( p_demux,
1812 p_stream->i_idxposc + 1 ) )
1814 return VLC_EGENERIC;
1823 if( AVI_StreamBytesSet( p_demux,
1825 AVI_PTSToByte( p_stream, i_date ) ) )
1827 return VLC_EGENERIC;
1834 /****************************************************************************
1835 * Return true if it's a key frame
1836 ****************************************************************************/
1837 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1843 * startcode: 0x00000100 32bits
1844 * framenumber ? 5bits
1845 * piture type 0(I),1(P) 2bits
1847 if( GetDWBE( p_byte ) != 0x00000100 )
1849 /* it's not an msmpegv1 stream, strange...*/
1850 return AVIIF_KEYFRAME;
1852 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1855 case FOURCC_DIV3: /* wmv1 also */
1857 * picture type 0(I),1(P) 2bits
1859 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1861 /* we should find first occurrence of 0x000001b6 (32bits)
1862 * startcode: 0x000001b6 32bits
1863 * piture type 0(I),1(P) 2bits
1865 if( GetDWBE( p_byte ) != 0x000001b6 )
1867 /* not true , need to find the first VOP header */
1868 return AVIIF_KEYFRAME;
1870 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1873 /* I can't do it, so say yes */
1874 return AVIIF_KEYFRAME;
1878 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1883 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1887 /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1891 return VLC_FOURCC('m','r','l','e');
1940 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1944 /****************************************************************************
1946 ****************************************************************************/
1947 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1948 unsigned int *pi_number, unsigned int *pi_type )
1950 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1953 c1 = ((uint8_t *)&i_id)[0];
1954 c2 = ((uint8_t *)&i_id)[1];
1956 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1958 SET_PTR( pi_number, 100 ); /* > max stream number */
1959 SET_PTR( pi_type, UNKNOWN_ES );
1963 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1964 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1967 SET_PTR( pi_type, AUDIO_ES );
1971 SET_PTR( pi_type, VIDEO_ES );
1974 SET_PTR( pi_type, UNKNOWN_ES );
1981 /****************************************************************************
1983 ****************************************************************************/
1984 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1986 const uint8_t *p_peek;
1988 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
1990 return VLC_EGENERIC;
1992 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
1993 p_pk->i_size = GetDWLE( p_peek + 4 );
1994 p_pk->i_pos = stream_Tell( p_demux->s );
1995 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
1997 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
1998 p_peek[10], p_peek[11] );
2005 memcpy( p_pk->i_peek, p_peek + 8, 8 );
2007 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
2011 static int AVI_PacketNext( demux_t *p_demux )
2013 avi_packet_t avi_ck;
2016 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
2018 return VLC_EGENERIC;
2021 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2022 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2026 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2027 avi_ck.i_type == AVIFOURCC_AVIX )
2033 i_skip = __EVEN( avi_ck.i_size ) + 8;
2036 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2038 return VLC_EGENERIC;
2043 static int AVI_PacketRead( demux_t *p_demux,
2045 block_t **pp_frame )
2049 i_size = __EVEN( p_pk->i_size + 8 );
2051 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2053 return VLC_EGENERIC;
2055 (*pp_frame)->p_buffer += 8;
2056 (*pp_frame)->i_buffer -= 8;
2058 if( i_size != p_pk->i_size + 8 )
2060 (*pp_frame)->i_buffer--;
2066 static int AVI_PacketSearch( demux_t *p_demux )
2068 demux_sys_t *p_sys = p_demux->p_sys;
2069 avi_packet_t avi_pk;
2074 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2076 return VLC_EGENERIC;
2078 AVI_PacketGetHeader( p_demux, &avi_pk );
2079 if( avi_pk.i_stream < p_sys->i_track &&
2080 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2084 switch( avi_pk.i_fourcc )
2086 case AVIFOURCC_JUNK:
2087 case AVIFOURCC_LIST:
2088 case AVIFOURCC_RIFF:
2089 case AVIFOURCC_idx1:
2093 /* Prevents from eating all the CPU with broken files.
2094 * This value should be low enough so that it doesn't affect the
2095 * reading speed too much (not that we care much anyway because
2096 * this code is called only on broken files). */
2097 if( !(++i_count % 1024) )
2099 if( p_demux->b_die ) return VLC_EGENERIC;
2102 if( !(i_count % (1024 * 10)) )
2103 msg_Warn( p_demux, "trying to resync..." );
2108 /****************************************************************************
2110 ****************************************************************************/
2111 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
2113 avi_entry_t *p_index)
2115 avi_track_t *tk = p_sys->track[i_stream];
2117 /* Update i_movi_lastchunk_pos */
2118 if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2120 p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2124 if( tk->i_idxnb >= tk->i_idxmax )
2126 tk->i_idxmax += 16384;
2127 tk->p_index = realloc( tk->p_index,
2128 tk->i_idxmax * sizeof( avi_entry_t ) );
2129 if( tk->p_index == NULL )
2134 /* calculate cumulate length */
2135 if( tk->i_idxnb > 0 )
2137 p_index->i_lengthtotal =
2138 tk->p_index[tk->i_idxnb - 1].i_length +
2139 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2143 p_index->i_lengthtotal = 0;
2146 tk->p_index[tk->i_idxnb++] = *p_index;
2149 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2151 demux_sys_t *p_sys = p_demux->p_sys;
2153 avi_chunk_list_t *p_riff;
2154 avi_chunk_list_t *p_movi;
2155 avi_chunk_idx1_t *p_idx1;
2157 unsigned int i_stream;
2158 unsigned int i_index;
2164 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2165 p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2166 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2170 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2171 return VLC_EGENERIC;
2174 /* *** calculate offset *** */
2175 /* Well, avi is __SHIT__ so test more than one entry
2176 * (needed for some avi files) */
2178 for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2180 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2182 i_offset = p_movi->i_chunk_pos + 8;
2187 /* Reset b_keyset */
2188 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2189 b_keyset[i_stream] = false;
2191 for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2195 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2198 if( i_stream < p_sys->i_track &&
2199 i_cat == p_sys->track[i_stream]->i_cat )
2202 index.i_id = p_idx1->entry[i_index].i_fourcc;
2204 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2205 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2206 index.i_length = p_idx1->entry[i_index].i_length;
2207 AVI_IndexAddEntry( p_sys, i_stream, &index );
2209 if( index.i_flags&AVIIF_KEYFRAME )
2210 b_keyset[i_stream] = true;
2214 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2216 if( !b_keyset[i_stream] )
2218 avi_track_t *tk = p_sys->track[i_stream];
2220 msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2221 for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2222 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2228 static void __Parse_indx( demux_t *p_demux,
2230 avi_chunk_indx_t *p_indx )
2232 demux_sys_t *p_sys = p_demux->p_sys;
2236 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2237 if( p_indx->i_indexsubtype == 0 )
2239 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2241 index.i_id = p_indx->i_id;
2242 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2243 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2244 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2246 AVI_IndexAddEntry( p_sys, i_stream, &index );
2249 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2251 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2253 index.i_id = p_indx->i_id;
2254 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2255 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2256 index.i_length = p_indx->idx.field[i].i_size;
2258 AVI_IndexAddEntry( p_sys, i_stream, &index );
2263 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2267 static void AVI_IndexLoad_indx( demux_t *p_demux )
2269 demux_sys_t *p_sys = p_demux->p_sys;
2270 unsigned int i_stream;
2273 avi_chunk_list_t *p_riff;
2274 avi_chunk_list_t *p_hdrl;
2276 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2277 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2279 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2281 avi_chunk_list_t *p_strl;
2282 avi_chunk_indx_t *p_indx;
2284 #define p_stream p_sys->track[i_stream]
2285 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2286 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2290 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2295 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2297 __Parse_indx( p_demux, i_stream, p_indx );
2299 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2302 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2304 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2305 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2309 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2314 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2320 static void AVI_IndexLoad( demux_t *p_demux )
2322 demux_sys_t *p_sys = p_demux->p_sys;
2323 unsigned int i_stream;
2325 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2327 p_sys->track[i_stream]->i_idxnb = 0;
2328 p_sys->track[i_stream]->i_idxmax = 0;
2329 p_sys->track[i_stream]->p_index = NULL;
2334 AVI_IndexLoad_indx( p_demux );
2336 else if( AVI_IndexLoad_idx1( p_demux ) )
2338 /* try indx if idx1 failed as some "normal" file have indx too */
2339 AVI_IndexLoad_indx( p_demux );
2342 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2344 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2345 i_stream, p_sys->track[i_stream]->i_idxnb );
2349 static void AVI_IndexCreate( demux_t *p_demux )
2351 demux_sys_t *p_sys = p_demux->p_sys;
2353 avi_chunk_list_t *p_riff;
2354 avi_chunk_list_t *p_movi;
2356 unsigned int i_stream;
2359 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2360 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2364 msg_Err( p_demux, "cannot find p_movi" );
2368 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2370 p_sys->track[i_stream]->i_idxnb = 0;
2371 p_sys->track[i_stream]->i_idxmax = 0;
2372 p_sys->track[i_stream]->p_index = NULL;
2374 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2375 stream_Size( p_demux->s ) );
2377 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2378 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2381 /* Only show dialog if AVI is > 10MB */
2382 p_demux->p_sys->i_dialog_id = -1;
2383 if( stream_Size( p_demux->s ) > 10000000 )
2385 p_demux->p_sys->i_dialog_id = intf_IntfProgress( p_demux,
2386 _( "Fixing AVI Index..." ),
2388 p_demux->p_sys->last_update = mdate();
2395 if( p_demux->b_die )
2400 /* Don't update dialog too often */
2401 if( p_demux->p_sys->i_dialog_id > 0 &&
2402 mdate() - p_demux->p_sys->last_update > 100000 )
2404 int64_t i_pos = stream_Tell( p_demux->s )* 100 /
2405 stream_Size( p_demux->s );
2406 float f_pos = (float)i_pos;
2407 p_demux->p_sys->last_update = mdate();
2408 intf_ProgressUpdate( p_demux, p_demux->p_sys->i_dialog_id,
2409 _( "Fixing AVI Index..." ), f_pos, -1 );
2412 if( AVI_PacketGetHeader( p_demux, &pk ) )
2416 if( pk.i_stream < p_sys->i_track &&
2417 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2420 index.i_id = pk.i_fourcc;
2422 AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2423 index.i_pos = pk.i_pos;
2424 index.i_length = pk.i_size;
2425 AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2429 switch( pk.i_fourcc )
2431 case AVIFOURCC_idx1:
2434 avi_chunk_list_t *p_sysx;
2435 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2436 AVIFOURCC_RIFF, 1 );
2438 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2439 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24))
2446 case AVIFOURCC_RIFF:
2447 msg_Dbg( p_demux, "new RIFF chunk found" );
2449 case AVIFOURCC_JUNK:
2452 msg_Warn( p_demux, "need resync, probably broken avi" );
2453 if( AVI_PacketSearch( p_demux ) )
2455 msg_Warn( p_demux, "lost sync, abord index creation" );
2461 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2462 AVI_PacketNext( p_demux ) )
2469 if( p_demux->p_sys->i_dialog_id > 0 )
2471 intf_UserHide( p_demux, p_demux->p_sys->i_dialog_id );
2474 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2477 "stream[%d] creating %d index entries",
2479 p_sys->track[i_stream]->i_idxnb );
2483 /*****************************************************************************
2485 *****************************************************************************/
2486 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2488 demux_sys_t *p_sys = p_demux->p_sys;
2492 for( i = 0; i < p_sys->i_track; i++ )
2494 avi_track_t *tk = p_sys->track[i];
2495 if( tk->i_idxposc >= tk->i_idxnb )
2497 tk->b_activated = false;
2498 if( tk->p_es ) es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, false );
2508 /****************************************************************************
2509 * AVI_MovieGetLength give max streams length in second
2510 ****************************************************************************/
2511 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2513 demux_sys_t *p_sys = p_demux->p_sys;
2514 mtime_t i_maxlength = 0;
2517 for( i = 0; i < p_sys->i_track; i++ )
2519 avi_track_t *tk = p_sys->track[i];
2522 /* fix length for each stream */
2523 if( tk->i_idxnb < 1 || !tk->p_index )
2528 if( tk->i_samplesize )
2530 i_length = AVI_GetDPTS( tk,
2531 tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2532 tk->p_index[tk->i_idxnb-1].i_length );
2536 i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2538 i_length /= (mtime_t)1000000; /* in seconds */
2541 "stream[%d] length:%"PRId64" (based on index)",
2544 i_maxlength = __MAX( i_maxlength, i_length );