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 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_demux.h>
35 #include <vlc_interface.h>
38 #include <vlc_codecs.h>
39 #include <vlc_charset.h>
43 /*****************************************************************************
45 *****************************************************************************/
47 #define INTERLEAVE_TEXT N_("Force interleaved method" )
48 #define INTERLEAVE_LONGTEXT N_( "Force interleaved method." )
50 #define INDEX_TEXT N_("Force index creation")
51 #define INDEX_LONGTEXT N_( \
52 "Recreate a index for the AVI file. Use this if your AVI file is damaged "\
53 "or incomplete (not seekable)." )
55 static int Open ( vlc_object_t * );
56 static void Close( vlc_object_t * );
58 static const int pi_index[] = {0,1,2};
60 static const char *const ppsz_indexes[] = { N_("Ask"), N_("Always fix"),
64 set_shortname( "AVI" );
65 set_description( N_("AVI demuxer") );
66 set_capability( "demux", 212 );
67 set_category( CAT_INPUT );
68 set_subcategory( SUBCAT_INPUT_DEMUX );
70 add_bool( "avi-interleaved", 0, NULL,
71 INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, true );
72 add_integer( "avi-index", 0, NULL,
73 INDEX_TEXT, INDEX_LONGTEXT, false );
74 change_integer_list( pi_index, ppsz_indexes, NULL );
76 set_callbacks( Open, Close );
79 /*****************************************************************************
81 *****************************************************************************/
82 static int Control ( demux_t *, int, va_list );
83 static int Seek ( demux_t *, mtime_t, int );
84 static int Demux_Seekable ( demux_t * );
85 static int Demux_UnSeekable( demux_t * );
87 #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
91 vlc_fourcc_t i_fourcc;
94 vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
96 uint8_t i_peek[8]; /* first 8 bytes */
98 unsigned int i_stream;
109 uint32_t i_lengthtotal;
117 unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
118 vlc_fourcc_t i_codec;
127 avi_entry_t *p_index;
128 unsigned int i_idxnb;
129 unsigned int i_idxmax;
131 unsigned int i_idxposc; /* numero of chunk */
132 unsigned int i_idxposb; /* byte in the current chunk */
134 /* extra information given to the decoder */
137 /* For VBR audio only */
138 unsigned int i_blockno;
139 unsigned int i_blocksize;
141 /* For muxed streams */
142 stream_t *p_out_muxed;
157 off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
159 /* number of streams and information */
160 unsigned int i_track;
167 static inline off_t __EVEN( off_t i )
169 return (i & 1) ? i + 1 : i;
172 static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
173 static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
174 static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
175 static mtime_t AVI_GetPTS ( avi_track_t * );
178 static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
179 static int AVI_StreamChunkSet ( demux_t *,
180 unsigned int i_stream, unsigned int i_ck );
181 static int AVI_StreamBytesSet ( demux_t *,
182 unsigned int i_stream, off_t i_byte );
184 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
185 static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
187 static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
188 static int AVI_PacketNext ( demux_t * );
189 static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
190 static int AVI_PacketSearch ( demux_t * );
192 static void AVI_IndexLoad ( demux_t * );
193 static void AVI_IndexCreate ( demux_t * );
194 static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
196 static mtime_t AVI_MovieGetLength( demux_t * );
198 /*****************************************************************************
200 *****************************************************************************/
201 static int AVI_TrackSeek ( demux_t *, int, mtime_t );
202 static int AVI_TrackStopFinishedStreams( demux_t *);
205 - For VBR mp3 stream:
206 count blocks by rounded-up chunksizes instead of chunks
207 we need full emulation of dshow avi demuxer bugs :(
208 fixes silly nandub-style a-v delaying in avi with vbr mp3...
209 (from mplayer 2002/08/02)
213 /*****************************************************************************
214 * Open: check file and initializes AVI structures
215 *****************************************************************************/
216 static int Open( vlc_object_t * p_this )
218 demux_t *p_demux = (demux_t *)p_this;
221 bool b_index = false;
225 avi_chunk_list_t *p_riff = (avi_chunk_list_t*)&ck_riff;
226 avi_chunk_list_t *p_hdrl, *p_movi;
227 avi_chunk_avih_t *p_avih;
229 unsigned int i_track;
230 unsigned int i, i_peeker;
232 const uint8_t *p_peek;
234 /* Is it an avi file ? */
235 if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 ) return VLC_EGENERIC;
237 for( i_peeker = 0; i_peeker < 188; i_peeker++ )
239 if( !strncmp( (char *)&p_peek[0], "RIFF", 4 ) && !strncmp( (char *)&p_peek[8], "AVI ", 4 ) )
241 if( !strncmp( (char *)&p_peek[0], "ON2 ", 4 ) && !strncmp( (char *)&p_peek[8], "ON2f", 4 ) )
245 if( i_peeker == 188 )
250 /* Initialize input structures. */
251 p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
252 memset( p_sys, 0, sizeof( demux_sys_t ) );
255 p_sys->i_movi_lastchunk_pos = 0;
256 p_sys->b_odml = false;
257 p_sys->b_muxed = false;
262 stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
264 p_demux->pf_control = Control;
265 p_demux->pf_demux = Demux_Seekable;
267 /* For unseekable stream, automaticaly use Demux_UnSeekable */
268 if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
270 p_demux->pf_demux = Demux_UnSeekable;
275 stream_Read( p_demux->s, NULL, i_peeker );
278 if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
280 msg_Err( p_demux, "avi module discarded (invalid file)" );
284 if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
286 unsigned int i_count =
287 AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
289 msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
290 for( i = 1; i < i_count; i++ )
292 avi_chunk_list_t *p_sysx;
294 p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
295 if( p_sysx->i_type == AVIFOURCC_AVIX )
297 msg_Warn( p_demux, "detected OpenDML file" );
298 p_sys->b_odml = true;
304 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
305 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
306 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
308 if( !p_hdrl || !p_movi )
310 msg_Err( p_demux, "avi module discarded (invalid file)" );
314 if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
316 msg_Err( p_demux, "cannot find avih chunk" );
319 i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
320 if( p_avih->i_streams != i_track )
323 "found %d stream but %d are declared",
324 i_track, p_avih->i_streams );
328 msg_Err( p_demux, "no stream defined!" );
332 /* print information on streams */
333 msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
335 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
336 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
337 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
338 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
339 if( ( p_sys->meta = vlc_meta_New() ) )
342 sprintf( buffer, "%s%s%s%s",
343 p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
344 p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
345 p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
346 p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
347 vlc_meta_SetSetting( p_sys->meta, buffer );
350 /* now read info on each stream and create ES */
351 for( i = 0 ; i < i_track; i++ )
353 avi_track_t *tk = malloc( sizeof( avi_track_t ) );
357 avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
358 avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
359 avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
360 avi_chunk_strf_auds_t *p_auds = NULL;
361 avi_chunk_strf_vids_t *p_vids = NULL;
364 memset( tk, 0, sizeof( avi_track_t ) );
366 p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
367 p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
369 if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
371 msg_Warn( p_demux, "stream[%d] incomplete", i );
375 tk->i_rate = p_strh->i_rate;
376 tk->i_scale = p_strh->i_scale;
377 tk->i_samplesize = p_strh->i_samplesize;
378 msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
379 i, tk->i_rate, tk->i_scale, tk->i_samplesize );
381 switch( p_strh->i_type )
383 case( AVIFOURCC_auds ):
384 tk->i_cat = AUDIO_ES;
385 tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
386 p_auds->p_wf->wFormatTag );
388 tk->i_blocksize = p_auds->p_wf->nBlockAlign;
389 if( tk->i_blocksize == 0 )
391 if( p_auds->p_wf->wFormatTag == 1 )
392 tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
396 else if( tk->i_samplesize != 0 && tk->i_samplesize != tk->i_blocksize )
398 msg_Warn( p_demux, "track[%d] samplesize=%d and blocksize=%d are not equal."
399 "Using blocksize as a workaround.",
400 i, tk->i_samplesize, tk->i_blocksize );
401 tk->i_samplesize = tk->i_blocksize;
404 if( tk->i_codec == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
406 tk->i_blocksize = 0; /* fix vorbis VBR decoding */
409 es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
411 fmt.audio.i_channels = p_auds->p_wf->nChannels;
412 fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
413 fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
414 fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
415 fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
416 fmt.b_packetized = !tk->i_blocksize;
419 "stream[%d] audio(0x%x) %d channels %dHz %dbits",
420 i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
421 p_auds->p_wf->nSamplesPerSec,
422 p_auds->p_wf->wBitsPerSample );
424 fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
425 p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
426 fmt.p_extra = tk->p_extra = malloc( fmt.i_extra );
427 if( !fmt.p_extra ) goto error;
428 memcpy( fmt.p_extra, &p_auds->p_wf[1], fmt.i_extra );
430 /* Rewrite the vorbis headers from Xiph-like format
431 * to VLC internal format
434 * - 1st byte == N, is the number of packets - 1
435 * - Following bytes are the size of the N first packets:
436 * while( *p == 0xFF ) { size += 0xFF; p++ } size += *p;
437 * (the size of the last packet is the size of remaining
438 * data in the buffer)
439 * - Finally, all the packets concatenated
442 * - Size of the packet on 16 bits (big endian) FIXME: should be 32 bits to be safe
443 * - The packet itself
444 * - Size of the next packet, and so on ...
447 if( tk->i_codec == VLC_FOURCC( 'v', 'o', 'r', 'b' ) )
449 uint8_t *p_extra = fmt.p_extra;
450 size_t i_extra = fmt.i_extra;
452 if( i_extra <= 1 ) break;
453 if( *p_extra++ != 2 ) break; /* 3 packets - 1 = 2 */
456 size_t i_identifier_len = 0;
457 while( *p_extra == 0xFF )
459 i_identifier_len += 0xFF;
461 if( --i_extra <= 1 ) break;
463 i_identifier_len += *p_extra++;
464 if( i_identifier_len > --i_extra ) break;
466 size_t i_comment_len = 0;
467 while( *p_extra == 0xFF )
469 i_comment_len += 0xFF;
471 if( --i_extra <= 1 ) break;
473 i_comment_len += *p_extra++;
474 if( i_comment_len > --i_extra ) break;
475 size_t i_cookbook_len = i_extra;
477 size_t i_headers_size = 3 * 2 + i_identifier_len +
478 i_comment_len + i_cookbook_len;
479 uint8_t *p_out = malloc( i_headers_size );
480 if( !p_out ) goto error;
482 fmt.p_extra = tk->p_extra = p_out;
483 fmt.i_extra = i_headers_size;
484 #define copy_packet( len ) \
485 *p_out++ = len >> 8; \
486 *p_out++ = len & 0xFF; \
487 memcpy( p_out, p_extra, len ); \
490 copy_packet( i_identifier_len );
491 copy_packet( i_comment_len );
492 copy_packet( i_cookbook_len );
498 case( AVIFOURCC_vids ):
499 tk->i_cat = VIDEO_ES;
500 tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
501 p_vids->p_bih->biCompression );
502 if( p_vids->p_bih->biCompression == 0x00 )
504 switch( p_vids->p_bih->biBitCount )
507 tk->i_codec = VLC_FOURCC('R','V','3','2');
510 tk->i_codec = VLC_FOURCC('R','V','2','4');
513 /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
516 tk->i_codec = VLC_FOURCC('R','V','1','5');
519 tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
522 tk->i_codec = VLC_FOURCC('Y','8','0','0');
525 es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
527 if( p_vids->p_bih->biBitCount == 24 )
529 /* This is in BGR format */
530 fmt.video.i_bmask = 0x00ff0000;
531 fmt.video.i_gmask = 0x0000ff00;
532 fmt.video.i_rmask = 0x000000ff;
537 es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
538 if( tk->i_codec == FOURCC_mp4v &&
539 !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
541 fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
544 tk->i_samplesize = 0;
545 fmt.video.i_width = p_vids->p_bih->biWidth;
546 fmt.video.i_height = p_vids->p_bih->biHeight;
547 fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
548 fmt.video.i_frame_rate = tk->i_rate;
549 fmt.video.i_frame_rate_base = tk->i_scale;
551 __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
552 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
553 fmt.p_extra = &p_vids->p_bih[1];
554 msg_Dbg( p_demux, "stream[%d] video(%4.4s) %"PRIu32"x%"PRIu32" %dbpp %ffps",
555 i, (char*)&p_vids->p_bih->biCompression,
556 (uint32_t)p_vids->p_bih->biWidth,
557 (uint32_t)p_vids->p_bih->biHeight,
558 p_vids->p_bih->biBitCount,
559 (float)tk->i_rate/(float)tk->i_scale );
561 if( p_vids->p_bih->biCompression == 0x00 )
563 /* RGB DIB are coded from bottom to top */
565 (unsigned int)(-(int)p_vids->p_bih->biHeight);
568 /* Extract palette from extradata if bpp <= 8
569 * (assumes that extradata contains only palette but appears
570 * to be true for all palettized codecs we support) */
571 if( fmt.video.i_bits_per_pixel > 0 && fmt.video.i_bits_per_pixel <= 8 )
573 /* The palette is not always included in biSize */
574 fmt.i_extra = p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
575 if( fmt.i_extra > 0 )
577 const uint8_t *p_pal = fmt.p_extra;
579 fmt.video.p_palette = calloc( sizeof(video_palette_t), 1 );
580 fmt.video.p_palette->i_entries = __MIN(fmt.i_extra/4, 256);
582 for( int i = 0; i < fmt.video.p_palette->i_entries; i++ )
584 for( int j = 0; j < 4; j++ )
585 fmt.video.p_palette->palette[i][j] = p_pal[4*i+j];
591 case( AVIFOURCC_txts):
593 tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
594 msg_Dbg( p_demux, "stream[%d] subtitles", i );
595 es_format_Init( &fmt, SPU_ES, tk->i_codec );
598 case( AVIFOURCC_iavs):
599 case( AVIFOURCC_ivas):
600 p_sys->b_muxed = true;
601 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
602 if( p_strh->i_handler == FOURCC_dvsd ||
603 p_strh->i_handler == FOURCC_dvhd ||
604 p_strh->i_handler == FOURCC_dvsl ||
605 p_strh->i_handler == FOURCC_dv25 ||
606 p_strh->i_handler == FOURCC_dv50 )
608 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
609 if( !tk->p_out_muxed )
610 msg_Err( p_demux, "could not load the DV parser" );
616 case( AVIFOURCC_mids):
617 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
620 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
626 /* The charset of p_strn is undefined */
627 EnsureUTF8( p_strn->p_str );
628 fmt.psz_description = strdup( p_strn->p_str );
630 if( tk->p_out_muxed == NULL )
631 tk->p_es = es_out_Add( p_demux->out, &fmt );
632 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
635 if( p_sys->i_track <= 0 )
637 msg_Err( p_demux, "no valid track" );
641 i_do_index = config_GetInt( p_demux, "avi-index" );
642 if( i_do_index == 1 ) /* Always fix */
645 if( p_sys->b_seekable )
647 AVI_IndexCreate( p_demux );
651 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
652 AVI_IndexLoad( p_demux );
657 AVI_IndexLoad( p_demux );
660 /* *** movie length in sec *** */
661 p_sys->i_length = AVI_MovieGetLength( p_demux );
662 if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
663 (mtime_t)p_avih->i_microsecperframe /
666 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
667 "approximative or will exhibit strange behavior" );
668 if( i_do_index == 0 && !b_index )
670 if( !p_sys->b_seekable ) {
675 i_create = intf_UserYesNo( p_demux, _("AVI Index") ,
676 _( "This AVI file is broken. Seeking will not "
677 "work correctly.\nDo you want to "
678 "try to repair it?\n\nThis might take a long time." ),
679 _( "Repair" ), _( "Don't repair" ), _( "Cancel") );
680 if( i_create == DIALOG_OK_YES )
683 msg_Dbg( p_demux, "Fixing AVI index" );
686 else if( i_create == DIALOG_CANCELLED )
689 vlc_object_kill( p_demux->p_parent );
695 /* fix some BeOS MediaKit generated file */
696 for( i = 0 ; i < p_sys->i_track; i++ )
698 avi_track_t *tk = p_sys->track[i];
699 avi_chunk_list_t *p_strl;
700 avi_chunk_strh_t *p_strh;
701 avi_chunk_strf_auds_t *p_auds;
703 if( tk->i_cat != AUDIO_ES )
707 if( tk->i_idxnb < 1 ||
709 tk->i_samplesize != 0 )
713 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
714 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
715 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
717 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
718 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
720 int64_t i_track_length =
721 tk->p_index[tk->i_idxnb-1].i_length +
722 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
723 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
724 (mtime_t)p_avih->i_microsecperframe;
728 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
731 tk->i_samplesize = 1;
732 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
733 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
737 if( p_sys->b_seekable )
739 /* we have read all chunk so go back to movi */
740 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
742 /* Skip movi header */
743 stream_Read( p_demux->s, NULL, 12 );
745 p_sys->i_movi_begin = p_movi->i_chunk_pos;
751 vlc_meta_Delete( p_sys->meta );
753 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
758 /*****************************************************************************
759 * Close: frees unused data
760 *****************************************************************************/
761 static void Close ( vlc_object_t * p_this )
763 demux_t * p_demux = (demux_t *)p_this;
765 demux_sys_t *p_sys = p_demux->p_sys ;
767 for( i = 0; i < p_sys->i_track; i++ )
769 if( p_sys->track[i] )
771 if( p_sys->track[i]->p_out_muxed )
772 stream_DemuxDelete( p_sys->track[i]->p_out_muxed );
773 free( p_sys->track[i]->p_index );
774 free( p_sys->track[i]->p_extra );
775 free( p_sys->track[i] );
778 free( p_sys->track );
779 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
780 vlc_meta_Delete( p_sys->meta );
785 /*****************************************************************************
786 * Demux_Seekable: reads and demuxes data packets for stream seekable
787 *****************************************************************************
788 * AVIDemux: reads and demuxes data packets
789 *****************************************************************************
790 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
791 *****************************************************************************/
798 off_t i_posf; /* where we will read :
799 if i_idxposb == 0 : begining of chunk (+8 to acces data)
800 else : point on data directly */
801 } avi_track_toread_t;
803 static int Demux_Seekable( demux_t *p_demux )
805 demux_sys_t *p_sys = p_demux->p_sys;
807 unsigned int i_track_count = 0;
808 unsigned int i_track;
810 /* cannot be more than 100 stream (dcXX or wbXX) */
811 avi_track_toread_t toread[100];
814 /* detect new selected/unselected streams */
815 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
817 avi_track_t *tk = p_sys->track[i_track];
820 if( p_sys->b_muxed && tk->p_out_muxed )
823 tk->b_activated = true;
827 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
828 if( b && !tk->b_activated )
830 if( p_sys->b_seekable)
832 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
834 tk->b_activated = true;
836 else if( !b && tk->b_activated )
838 tk->b_activated = false;
846 if( i_track_count <= 0 )
848 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
850 p_sys->i_time += 25*1000; /* read 25ms */
853 if( p_sys->i_time >= i_length )
857 msg_Warn( p_demux, "no track selected, exiting..." );
861 /* wait for the good time */
862 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
863 p_sys->i_time += 25*1000; /* read 25ms */
866 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
868 avi_track_t *tk = p_sys->track[i_track];
871 toread[i_track].b_ok = tk->b_activated;
872 if( tk->i_idxposc < tk->i_idxnb )
874 toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
875 if( tk->i_idxposb > 0 )
877 toread[i_track].i_posf += 8 + tk->i_idxposb;
882 toread[i_track].i_posf = -1;
885 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
887 if( tk->i_samplesize )
889 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
893 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
898 toread[i_track].i_toread *= -1;
913 /* search for first chunk to be read */
914 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
916 if( !toread[i].b_ok ||
917 AVI_GetDPTS( p_sys->track[i],
918 toread[i].i_toread ) <= -25 * 1000 )
923 if( toread[i].i_toread > 0 )
925 b_done = false; /* not yet finished */
927 if( toread[i].i_posf > 0 )
929 if( i_pos == -1 || i_pos > toread[i].i_posf )
932 i_pos = toread[i].i_posf;
939 for( i = 0; i < p_sys->i_track; i++ )
944 msg_Warn( p_demux, "all tracks have failed, exiting..." );
950 int i_loop_count = 0;
952 /* no valid index, we will parse directly the stream
953 * in case we fail we will disable all finished stream */
954 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
956 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
957 if( AVI_PacketNext( p_demux ) )
959 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
964 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
971 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
974 "cannot get packet header, track disabled" );
975 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
977 if( avi_pk.i_stream >= p_sys->i_track ||
978 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
980 if( AVI_PacketNext( p_demux ) )
983 "cannot skip packet, track disabled" );
984 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
987 /* Prevents from eating all the CPU with broken files.
988 * This value should be low enough so that it doesn't
989 * affect the reading speed too much. */
990 if( !(++i_loop_count % 1024) )
992 if( !vlc_object_alive (p_demux) ) return -1;
995 if( !(i_loop_count % (1024 * 10)) )
997 "don't seem to find any data..." );
1003 /* add this chunk to the index */
1006 index.i_id = avi_pk.i_fourcc;
1008 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1010 index.i_pos = avi_pk.i_pos;
1011 index.i_length = avi_pk.i_size;
1012 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1014 i_track = avi_pk.i_stream;
1015 tk = p_sys->track[i_track];
1016 /* do we will read this data ? */
1017 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1023 if( AVI_PacketNext( p_demux ) )
1026 "cannot skip packet, track disabled" );
1027 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1036 stream_Seek( p_demux->s, i_pos );
1039 /* Set the track to use */
1040 tk = p_sys->track[i_track];
1042 /* read thoses data */
1043 if( tk->i_samplesize )
1045 unsigned int i_toread;
1047 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1049 if( tk->i_samplesize > 1 )
1051 i_toread = tk->i_samplesize;
1055 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1056 i_toread = __MAX( i_toread, 100 );
1059 i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
1065 i_size = tk->p_index[tk->i_idxposc].i_length;
1068 if( tk->i_idxposb == 0 )
1070 i_size += 8; /* need to read and skip header */
1073 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1075 msg_Warn( p_demux, "failed reading data" );
1076 tk->b_activated = false;
1077 toread[i_track].b_ok = false;
1080 if( i_size % 2 ) /* read was padded on word boundary */
1082 p_frame->i_buffer--;
1085 if( tk->i_idxposb == 0 )
1087 p_frame->p_buffer += 8;
1088 p_frame->i_buffer -= 8;
1090 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1091 if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1093 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1097 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1101 if( tk->i_samplesize )
1103 if( tk->i_idxposb == 0 )
1107 toread[i_track].i_toread -= i_size;
1108 tk->i_idxposb += i_size;
1109 if( tk->i_idxposb >=
1110 tk->p_index[tk->i_idxposc].i_length )
1118 int i_length = tk->p_index[tk->i_idxposc].i_length;
1121 if( tk->i_cat == AUDIO_ES )
1123 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1125 toread[i_track].i_toread--;
1128 if( tk->i_idxposc < tk->i_idxnb)
1130 toread[i_track].i_posf =
1131 tk->p_index[tk->i_idxposc].i_pos;
1132 if( tk->i_idxposb > 0 )
1134 toread[i_track].i_posf += 8 + tk->i_idxposb;
1140 toread[i_track].i_posf = -1;
1143 b_stream = true; /* at least one read succeed */
1145 if( tk->i_cat != VIDEO_ES )
1146 p_frame->i_dts = p_frame->i_pts;
1149 p_frame->i_dts = p_frame->i_pts;
1153 //p_pes->i_rate = p_demux->stream.control.i_rate;
1154 if( tk->p_out_muxed )
1155 stream_DemuxSend( tk->p_out_muxed, p_frame );
1157 es_out_Send( p_demux->out, tk->p_es, p_frame );
1162 /*****************************************************************************
1163 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1164 *****************************************************************************
1165 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1166 *****************************************************************************/
1167 static int Demux_UnSeekable( demux_t *p_demux )
1169 demux_sys_t *p_sys = p_demux->p_sys;
1170 avi_track_t *p_stream_master = NULL;
1171 unsigned int i_stream;
1172 unsigned int i_packet;
1174 if( p_sys->b_muxed )
1176 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1177 return VLC_EGENERIC;
1180 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1182 /* *** find master stream for data packet skipping algo *** */
1183 /* *** -> first video, if any, or first audio ES *** */
1184 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1186 avi_track_t *tk = p_sys->track[i_stream];
1189 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1191 if( b && tk->i_cat == VIDEO_ES )
1193 p_stream_master = tk;
1197 p_stream_master = tk;
1201 if( !p_stream_master )
1203 msg_Warn( p_demux, "no more stream selected" );
1207 p_sys->i_time = AVI_GetPTS( p_stream_master );
1209 for( i_packet = 0; i_packet < 10; i_packet++)
1211 #define p_stream p_sys->track[avi_pk.i_stream]
1213 avi_packet_t avi_pk;
1215 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1220 if( avi_pk.i_stream >= p_sys->i_track ||
1221 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1223 /* we haven't found an audio or video packet:
1224 * - we have seek, found first next packet
1225 * - others packets could be found, skip them
1227 switch( avi_pk.i_fourcc )
1229 case AVIFOURCC_JUNK:
1230 case AVIFOURCC_LIST:
1231 case AVIFOURCC_RIFF:
1232 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1233 case AVIFOURCC_idx1:
1236 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1238 return( 0 ); /* eof */
1241 "seems to have lost position, resync" );
1242 if( AVI_PacketSearch( p_demux ) )
1244 msg_Err( p_demux, "resync failed" );
1251 /* check for time */
1252 if( __ABS( AVI_GetPTS( p_stream ) -
1253 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1255 /* load it and send to decoder */
1257 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1261 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1263 if( avi_pk.i_cat != VIDEO_ES )
1264 p_frame->i_dts = p_frame->i_pts;
1267 p_frame->i_dts = p_frame->i_pts;
1271 //p_pes->i_rate = p_demux->stream.control.i_rate;
1272 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1276 if( AVI_PacketNext( p_demux ) )
1282 /* *** update stream time position *** */
1283 if( p_stream->i_samplesize )
1285 p_stream->i_idxposb += avi_pk.i_size;
1289 if( p_stream->i_cat == AUDIO_ES )
1291 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1293 p_stream->i_idxposc++;
1303 /*****************************************************************************
1304 * Seek: goto to i_date or i_percent
1305 *****************************************************************************/
1306 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1309 demux_sys_t *p_sys = p_demux->p_sys;
1310 unsigned int i_stream;
1311 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1312 i_date / 1000000, i_percent );
1314 if( p_sys->b_seekable )
1316 if( !p_sys->i_length )
1318 avi_track_t *p_stream;
1321 /* use i_percent to create a true i_date */
1322 msg_Warn( p_demux, "seeking without index at %d%%"
1323 " only works for interleaved files", i_percent );
1324 if( i_percent >= 100 )
1326 msg_Warn( p_demux, "cannot seek so far !" );
1327 return VLC_EGENERIC;
1329 i_percent = __MAX( i_percent, 0 );
1331 /* try to find chunk that is at i_percent or the file */
1332 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1333 p_sys->i_movi_begin );
1334 /* search first selected stream */
1335 for( i_stream = 0, p_stream = NULL;
1336 i_stream < p_sys->i_track; i_stream++ )
1338 p_stream = p_sys->track[i_stream];
1339 if( p_stream->b_activated )
1344 if( !p_stream || !p_stream->b_activated )
1346 msg_Warn( p_demux, "cannot find any selected stream" );
1347 return VLC_EGENERIC;
1350 /* be sure that the index exist */
1351 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1353 msg_Warn( p_demux, "cannot seek" );
1354 return VLC_EGENERIC;
1357 while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1358 p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1360 /* search after i_idxposc */
1361 if( AVI_StreamChunkSet( p_demux,
1362 i_stream, p_stream->i_idxposc + 1 ) )
1364 msg_Warn( p_demux, "cannot seek" );
1365 return VLC_EGENERIC;
1369 i_date = AVI_GetPTS( p_stream );
1370 /* TODO better support for i_samplesize != 0 */
1371 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1375 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1377 avi_track_t *p_stream = p_sys->track[i_stream];
1379 if( !p_stream->b_activated )
1382 AVI_TrackSeek( p_demux, i_stream, i_date );
1384 p_sys->i_time = i_date;
1385 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1390 msg_Err( p_demux, "shouldn't yet be executed" );
1391 return VLC_EGENERIC;
1395 /*****************************************************************************
1397 *****************************************************************************/
1398 static double ControlGetPosition( demux_t *p_demux )
1400 demux_sys_t *p_sys = p_demux->p_sys;
1402 if( p_sys->i_length > 0 )
1404 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1406 else if( stream_Size( p_demux->s ) > 0 )
1412 /* search the more advanced selected es */
1413 for( i = 0; i < p_sys->i_track; i++ )
1415 avi_track_t *tk = p_sys->track[i];
1416 if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1418 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1419 tk->p_index[tk->i_idxposc].i_length + 8;
1426 return (double)i64 / stream_Size( p_demux->s );
1431 static int Control( demux_t *p_demux, int i_query, va_list args )
1433 demux_sys_t *p_sys = p_demux->p_sys;
1441 case DEMUX_GET_POSITION:
1442 pf = (double*)va_arg( args, double * );
1443 *pf = ControlGetPosition( p_demux );
1445 case DEMUX_SET_POSITION:
1446 f = (double)va_arg( args, double );
1447 if( p_sys->b_seekable )
1449 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1450 return Seek( p_demux, i64, (int)(f * 100) );
1454 int64_t i_pos = stream_Size( p_demux->s ) * f;
1455 return stream_Seek( p_demux->s, i_pos );
1458 case DEMUX_GET_TIME:
1459 pi64 = (int64_t*)va_arg( args, int64_t * );
1460 *pi64 = p_sys->i_time;
1463 case DEMUX_SET_TIME:
1467 i64 = (int64_t)va_arg( args, int64_t );
1468 if( p_sys->i_length > 0 )
1470 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1472 else if( p_sys->i_time > 0 )
1474 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1475 (double)i64 / (double)p_sys->i_time );
1477 return Seek( p_demux, i64, i_percent );
1479 case DEMUX_GET_LENGTH:
1480 pi64 = (int64_t*)va_arg( args, int64_t * );
1481 *pi64 = p_sys->i_length * (mtime_t)1000000;
1485 pf = (double*)va_arg( args, double * );
1487 for( i = 0; i < (int)p_sys->i_track; i++ )
1489 avi_track_t *tk = p_sys->track[i];
1490 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1492 *pf = (float)tk->i_rate / (float)tk->i_scale;
1497 case DEMUX_GET_META:
1498 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1499 vlc_meta_Merge( p_meta, p_sys->meta );
1503 return VLC_EGENERIC;
1507 /*****************************************************************************
1508 * Function to convert pts to chunk or byte
1509 *****************************************************************************/
1511 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1516 return (mtime_t)((int64_t)i_pts *
1517 (int64_t)tk->i_rate /
1518 (int64_t)tk->i_scale /
1521 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1523 if( !tk->i_scale || !tk->i_samplesize )
1526 return (mtime_t)((int64_t)i_pts *
1527 (int64_t)tk->i_rate /
1528 (int64_t)tk->i_scale /
1530 (int64_t)tk->i_samplesize );
1533 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1540 i_dpts = (mtime_t)( (int64_t)1000000 *
1542 (int64_t)tk->i_scale /
1543 (int64_t)tk->i_rate );
1545 if( tk->i_samplesize )
1547 return i_dpts / tk->i_samplesize;
1552 static mtime_t AVI_GetPTS( avi_track_t *tk )
1554 if( tk->i_samplesize )
1556 int64_t i_count = 0;
1558 /* we need a valid entry we will emulate one */
1559 if( tk->i_idxposc == tk->i_idxnb )
1563 /* use the last entry */
1564 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1565 + tk->p_index[tk->i_idxnb - 1].i_length;
1570 i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1572 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1576 if( tk->i_cat == AUDIO_ES )
1578 return AVI_GetDPTS( tk, tk->i_blockno );
1582 return AVI_GetDPTS( tk, tk->i_idxposc );
1587 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1589 demux_sys_t *p_sys = p_demux->p_sys;
1590 avi_packet_t avi_pk;
1591 int i_loop_count = 0;
1593 /* find first chunk of i_stream that isn't in index */
1595 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1597 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1598 if( AVI_PacketNext( p_demux ) )
1600 return VLC_EGENERIC;
1605 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1610 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1612 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1614 msg_Warn( p_demux, "cannot get packet header" );
1615 return VLC_EGENERIC;
1617 if( avi_pk.i_stream >= p_sys->i_track ||
1618 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1620 if( AVI_PacketNext( p_demux ) )
1622 return VLC_EGENERIC;
1625 /* Prevents from eating all the CPU with broken files.
1626 * This value should be low enough so that it doesn't
1627 * affect the reading speed too much. */
1628 if( !(++i_loop_count % 1024) )
1630 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1633 if( !(i_loop_count % (1024 * 10)) )
1634 msg_Warn( p_demux, "don't seem to find any data..." );
1639 /* add this chunk to the index */
1642 index.i_id = avi_pk.i_fourcc;
1644 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1646 index.i_pos = avi_pk.i_pos;
1647 index.i_length = avi_pk.i_size;
1648 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1650 if( avi_pk.i_stream == i_stream )
1655 if( AVI_PacketNext( p_demux ) )
1657 return VLC_EGENERIC;
1663 /* be sure that i_ck will be a valid index entry */
1664 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1667 demux_sys_t *p_sys = p_demux->p_sys;
1668 avi_track_t *p_stream = p_sys->track[i_stream];
1670 p_stream->i_idxposc = i_ck;
1671 p_stream->i_idxposb = 0;
1673 if( i_ck >= p_stream->i_idxnb )
1675 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1678 p_stream->i_idxposc++;
1679 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1681 return VLC_EGENERIC;
1684 } while( p_stream->i_idxposc < i_ck );
1690 /* XXX FIXME up to now, we assume that all chunk are one after one */
1691 static int AVI_StreamBytesSet( demux_t *p_demux,
1692 unsigned int i_stream,
1695 demux_sys_t *p_sys = p_demux->p_sys;
1696 avi_track_t *p_stream = p_sys->track[i_stream];
1698 if( ( p_stream->i_idxnb > 0 )
1699 &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1700 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1702 /* index is valid to find the ck */
1703 /* uses dichototmie to be fast enougth */
1704 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1705 int i_idxmax = p_stream->i_idxnb;
1709 if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1711 i_idxmax = i_idxposc ;
1712 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1716 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1717 p_stream->p_index[i_idxposc].i_length <= i_byte)
1719 i_idxmin = i_idxposc ;
1720 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1724 p_stream->i_idxposc = i_idxposc;
1725 p_stream->i_idxposb = i_byte -
1726 p_stream->p_index[i_idxposc].i_lengthtotal;
1735 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1736 p_stream->i_idxposb = 0;
1739 p_stream->i_idxposc++;
1740 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1742 return VLC_EGENERIC;
1745 } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1746 p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1748 p_stream->i_idxposb = i_byte -
1749 p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1754 static int AVI_TrackSeek( demux_t *p_demux,
1758 demux_sys_t *p_sys = p_demux->p_sys;
1759 avi_track_t *tk = p_sys->track[i_stream];
1761 #define p_stream p_sys->track[i_stream]
1764 i_oldpts = AVI_GetPTS( p_stream );
1766 if( !p_stream->i_samplesize )
1768 if( AVI_StreamChunkSet( p_demux,
1770 AVI_PTSToChunk( p_stream, i_date ) ) )
1772 return VLC_EGENERIC;
1775 if( p_stream->i_cat == AUDIO_ES )
1779 for( i = 0; i < tk->i_idxposc; i++ )
1781 if( tk->i_blocksize > 0 )
1783 tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1793 "old:%"PRId64" %s new %"PRId64,
1795 i_oldpts > i_date ? ">" : "<",
1798 if( p_stream->i_cat == VIDEO_ES )
1800 /* search key frame */
1801 //if( i_date < i_oldpts || 1 )
1803 while( p_stream->i_idxposc > 0 &&
1804 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1807 if( AVI_StreamChunkSet( p_demux,
1809 p_stream->i_idxposc - 1 ) )
1811 return VLC_EGENERIC;
1814 if( p_stream->p_es )
1815 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, p_stream->p_es, i_date );
1820 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1821 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1824 if( AVI_StreamChunkSet( p_demux,
1826 p_stream->i_idxposc + 1 ) )
1828 return VLC_EGENERIC;
1837 if( AVI_StreamBytesSet( p_demux,
1839 AVI_PTSToByte( p_stream, i_date ) ) )
1841 return VLC_EGENERIC;
1848 /****************************************************************************
1849 * Return true if it's a key frame
1850 ****************************************************************************/
1851 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1857 * startcode: 0x00000100 32bits
1858 * framenumber ? 5bits
1859 * piture type 0(I),1(P) 2bits
1861 if( GetDWBE( p_byte ) != 0x00000100 )
1863 /* it's not an msmpegv1 stream, strange...*/
1864 return AVIIF_KEYFRAME;
1866 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1869 case FOURCC_DIV3: /* wmv1 also */
1871 * picture type 0(I),1(P) 2bits
1873 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1875 /* we should find first occurrence of 0x000001b6 (32bits)
1876 * startcode: 0x000001b6 32bits
1877 * piture type 0(I),1(P) 2bits
1879 if( GetDWBE( p_byte ) != 0x000001b6 )
1881 /* not true , need to find the first VOP header */
1882 return AVIIF_KEYFRAME;
1884 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1887 /* I can't do it, so say yes */
1888 return AVIIF_KEYFRAME;
1892 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1897 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1901 /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1905 return VLC_FOURCC('m','r','l','e');
1954 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1958 /****************************************************************************
1960 ****************************************************************************/
1961 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1962 unsigned int *pi_number, unsigned int *pi_type )
1964 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1967 c1 = ((uint8_t *)&i_id)[0];
1968 c2 = ((uint8_t *)&i_id)[1];
1970 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1972 SET_PTR( pi_number, 100 ); /* > max stream number */
1973 SET_PTR( pi_type, UNKNOWN_ES );
1977 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1978 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1981 SET_PTR( pi_type, AUDIO_ES );
1985 SET_PTR( pi_type, VIDEO_ES );
1988 SET_PTR( pi_type, UNKNOWN_ES );
1995 /****************************************************************************
1997 ****************************************************************************/
1998 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
2000 const uint8_t *p_peek;
2002 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
2004 return VLC_EGENERIC;
2006 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
2007 p_pk->i_size = GetDWLE( p_peek + 4 );
2008 p_pk->i_pos = stream_Tell( p_demux->s );
2009 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
2011 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
2012 p_peek[10], p_peek[11] );
2019 memcpy( p_pk->i_peek, p_peek + 8, 8 );
2021 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
2025 static int AVI_PacketNext( demux_t *p_demux )
2027 avi_packet_t avi_ck;
2030 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
2032 return VLC_EGENERIC;
2035 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2036 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2040 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2041 avi_ck.i_type == AVIFOURCC_AVIX )
2047 i_skip = __EVEN( avi_ck.i_size ) + 8;
2050 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2052 return VLC_EGENERIC;
2057 static int AVI_PacketRead( demux_t *p_demux,
2059 block_t **pp_frame )
2063 i_size = __EVEN( p_pk->i_size + 8 );
2065 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2067 return VLC_EGENERIC;
2069 (*pp_frame)->p_buffer += 8;
2070 (*pp_frame)->i_buffer -= 8;
2072 if( i_size != p_pk->i_size + 8 )
2074 (*pp_frame)->i_buffer--;
2080 static int AVI_PacketSearch( demux_t *p_demux )
2082 demux_sys_t *p_sys = p_demux->p_sys;
2083 avi_packet_t avi_pk;
2088 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2090 return VLC_EGENERIC;
2092 AVI_PacketGetHeader( p_demux, &avi_pk );
2093 if( avi_pk.i_stream < p_sys->i_track &&
2094 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2098 switch( avi_pk.i_fourcc )
2100 case AVIFOURCC_JUNK:
2101 case AVIFOURCC_LIST:
2102 case AVIFOURCC_RIFF:
2103 case AVIFOURCC_idx1:
2107 /* Prevents from eating all the CPU with broken files.
2108 * This value should be low enough so that it doesn't affect the
2109 * reading speed too much (not that we care much anyway because
2110 * this code is called only on broken files). */
2111 if( !(++i_count % 1024) )
2113 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2116 if( !(i_count % (1024 * 10)) )
2117 msg_Warn( p_demux, "trying to resync..." );
2122 /****************************************************************************
2124 ****************************************************************************/
2125 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
2127 avi_entry_t *p_index)
2129 avi_track_t *tk = p_sys->track[i_stream];
2131 /* Update i_movi_lastchunk_pos */
2132 if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2134 p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2138 if( tk->i_idxnb >= tk->i_idxmax )
2140 tk->i_idxmax += 16384;
2141 tk->p_index = realloc( tk->p_index,
2142 tk->i_idxmax * sizeof( avi_entry_t ) );
2143 if( tk->p_index == NULL )
2148 /* calculate cumulate length */
2149 if( tk->i_idxnb > 0 )
2151 p_index->i_lengthtotal =
2152 tk->p_index[tk->i_idxnb - 1].i_length +
2153 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2157 p_index->i_lengthtotal = 0;
2160 tk->p_index[tk->i_idxnb++] = *p_index;
2163 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2165 demux_sys_t *p_sys = p_demux->p_sys;
2167 avi_chunk_list_t *p_riff;
2168 avi_chunk_list_t *p_movi;
2169 avi_chunk_idx1_t *p_idx1;
2171 unsigned int i_stream;
2172 unsigned int i_index;
2178 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2179 p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2180 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2184 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2185 return VLC_EGENERIC;
2188 /* *** calculate offset *** */
2189 /* Well, avi is __SHIT__ so test more than one entry
2190 * (needed for some avi files) */
2192 for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2194 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2196 i_offset = p_movi->i_chunk_pos + 8;
2201 /* Reset b_keyset */
2202 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2203 b_keyset[i_stream] = false;
2205 for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2209 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2212 if( i_stream < p_sys->i_track &&
2213 i_cat == p_sys->track[i_stream]->i_cat )
2216 index.i_id = p_idx1->entry[i_index].i_fourcc;
2218 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2219 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2220 index.i_length = p_idx1->entry[i_index].i_length;
2221 AVI_IndexAddEntry( p_sys, i_stream, &index );
2223 if( index.i_flags&AVIIF_KEYFRAME )
2224 b_keyset[i_stream] = true;
2228 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2230 if( !b_keyset[i_stream] )
2232 avi_track_t *tk = p_sys->track[i_stream];
2234 msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2235 for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2236 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2242 static void __Parse_indx( demux_t *p_demux,
2244 avi_chunk_indx_t *p_indx )
2246 demux_sys_t *p_sys = p_demux->p_sys;
2250 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2251 if( p_indx->i_indexsubtype == 0 )
2253 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2255 index.i_id = p_indx->i_id;
2256 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2257 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2258 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2260 AVI_IndexAddEntry( p_sys, i_stream, &index );
2263 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2265 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2267 index.i_id = p_indx->i_id;
2268 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2269 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2270 index.i_length = p_indx->idx.field[i].i_size;
2272 AVI_IndexAddEntry( p_sys, i_stream, &index );
2277 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2281 static void AVI_IndexLoad_indx( demux_t *p_demux )
2283 demux_sys_t *p_sys = p_demux->p_sys;
2284 unsigned int i_stream;
2287 avi_chunk_list_t *p_riff;
2288 avi_chunk_list_t *p_hdrl;
2290 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2291 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2293 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2295 avi_chunk_list_t *p_strl;
2296 avi_chunk_indx_t *p_indx;
2298 #define p_stream p_sys->track[i_stream]
2299 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2300 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2304 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2309 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2311 __Parse_indx( p_demux, i_stream, p_indx );
2313 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2316 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2318 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2319 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2323 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2328 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2334 static void AVI_IndexLoad( demux_t *p_demux )
2336 demux_sys_t *p_sys = p_demux->p_sys;
2337 unsigned int i_stream;
2339 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2341 p_sys->track[i_stream]->i_idxnb = 0;
2342 p_sys->track[i_stream]->i_idxmax = 0;
2343 p_sys->track[i_stream]->p_index = NULL;
2348 AVI_IndexLoad_indx( p_demux );
2350 else if( AVI_IndexLoad_idx1( p_demux ) )
2352 /* try indx if idx1 failed as some "normal" file have indx too */
2353 AVI_IndexLoad_indx( p_demux );
2356 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2358 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2359 i_stream, p_sys->track[i_stream]->i_idxnb );
2363 static void AVI_IndexCreate( demux_t *p_demux )
2365 demux_sys_t *p_sys = p_demux->p_sys;
2367 avi_chunk_list_t *p_riff;
2368 avi_chunk_list_t *p_movi;
2370 unsigned int i_stream;
2373 mtime_t i_dialog_update;
2376 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2377 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2381 msg_Err( p_demux, "cannot find p_movi" );
2385 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2387 p_sys->track[i_stream]->i_idxnb = 0;
2388 p_sys->track[i_stream]->i_idxmax = 0;
2389 p_sys->track[i_stream]->p_index = NULL;
2391 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2392 stream_Size( p_demux->s ) );
2394 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2395 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2398 /* Only show dialog if AVI is > 10MB */
2400 i_dialog_update = mdate();
2401 if( stream_Size( p_demux->s ) > 10000000 )
2402 i_dialog_id = intf_IntfProgress( p_demux, _("Fixing AVI Index..."), 0.0 );
2408 if( !vlc_object_alive (p_demux) )
2411 /* Don't update/check dialog too often */
2412 if( i_dialog_id > 0 && mdate() - i_dialog_update > 100000 )
2414 if( intf_ProgressIsCancelled( p_demux, i_dialog_id ) )
2417 double f_pos = 100.0 * stream_Tell( p_demux->s ) /
2418 stream_Size( p_demux->s );
2419 intf_ProgressUpdate( p_demux, i_dialog_id,
2420 _( "Fixing AVI Index..." ), f_pos, -1 );
2422 i_dialog_update = mdate();
2425 if( AVI_PacketGetHeader( p_demux, &pk ) )
2428 if( pk.i_stream < p_sys->i_track &&
2429 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2432 index.i_id = pk.i_fourcc;
2434 AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2435 index.i_pos = pk.i_pos;
2436 index.i_length = pk.i_size;
2437 AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2441 switch( pk.i_fourcc )
2443 case AVIFOURCC_idx1:
2446 avi_chunk_list_t *p_sysx;
2447 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2448 AVIFOURCC_RIFF, 1 );
2450 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2451 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2457 case AVIFOURCC_RIFF:
2458 msg_Dbg( p_demux, "new RIFF chunk found" );
2462 case AVIFOURCC_JUNK:
2466 msg_Warn( p_demux, "need resync, probably broken avi" );
2467 if( AVI_PacketSearch( p_demux ) )
2469 msg_Warn( p_demux, "lost sync, abord index creation" );
2475 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2476 AVI_PacketNext( p_demux ) )
2483 if( i_dialog_id > 0 )
2484 intf_UserHide( p_demux, i_dialog_id );
2486 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2488 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2489 i_stream, p_sys->track[i_stream]->i_idxnb );
2493 /*****************************************************************************
2495 *****************************************************************************/
2496 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2498 demux_sys_t *p_sys = p_demux->p_sys;
2502 for( i = 0; i < p_sys->i_track; i++ )
2504 avi_track_t *tk = p_sys->track[i];
2505 if( tk->i_idxposc >= tk->i_idxnb )
2507 tk->b_activated = false;
2508 if( tk->p_es ) es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, false );
2518 /****************************************************************************
2519 * AVI_MovieGetLength give max streams length in second
2520 ****************************************************************************/
2521 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2523 demux_sys_t *p_sys = p_demux->p_sys;
2524 mtime_t i_maxlength = 0;
2527 for( i = 0; i < p_sys->i_track; i++ )
2529 avi_track_t *tk = p_sys->track[i];
2532 /* fix length for each stream */
2533 if( tk->i_idxnb < 1 || !tk->p_index )
2538 if( tk->i_samplesize )
2540 i_length = AVI_GetDPTS( tk,
2541 tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2542 tk->p_index[tk->i_idxnb-1].i_length );
2546 i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2548 i_length /= (mtime_t)1000000; /* in seconds */
2551 "stream[%d] length:%"PRId64" (based on index)",
2554 i_maxlength = __MAX( i_maxlength, i_length );