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.i_extra && fmt.video.i_bits_per_pixel <= 8 &&
572 fmt.video.i_bits_per_pixel > 0 )
576 fmt.video.p_palette = calloc( sizeof(video_palette_t), 1 );
577 fmt.video.p_palette->i_entries = 1;
579 /* Apparently this is necessary. But why ? */
581 p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER);
582 for( i = 0; i < __MIN(fmt.i_extra/4, 256); i++ )
584 ((uint32_t *)&fmt.video.p_palette->palette[0][0])[i] =
585 GetDWLE((uint32_t*)fmt.p_extra + i);
590 case( AVIFOURCC_txts):
592 tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
593 msg_Dbg( p_demux, "stream[%d] subtitles", i );
594 es_format_Init( &fmt, SPU_ES, tk->i_codec );
597 case( AVIFOURCC_iavs):
598 case( AVIFOURCC_ivas):
599 p_sys->b_muxed = true;
600 msg_Dbg( p_demux, "stream[%d] iavs with handler %4.4s", i, (char *)&p_strh->i_handler );
601 if( p_strh->i_handler == FOURCC_dvsd ||
602 p_strh->i_handler == FOURCC_dvhd ||
603 p_strh->i_handler == FOURCC_dvsl ||
604 p_strh->i_handler == FOURCC_dv25 ||
605 p_strh->i_handler == FOURCC_dv50 )
607 tk->p_out_muxed = stream_DemuxNew( p_demux, (char *)"rawdv", p_demux->out );
608 if( !tk->p_out_muxed )
609 msg_Err( p_demux, "could not load the DV parser" );
615 case( AVIFOURCC_mids):
616 msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
619 msg_Warn( p_demux, "stream[%d] unknown type %4.4s", i, (char *)&p_strh->i_type );
625 /* The charset of p_strn is undefined */
626 EnsureUTF8( p_strn->p_str );
627 fmt.psz_description = strdup( p_strn->p_str );
629 if( tk->p_out_muxed == NULL )
630 tk->p_es = es_out_Add( p_demux->out, &fmt );
631 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
634 if( p_sys->i_track <= 0 )
636 msg_Err( p_demux, "no valid track" );
640 i_do_index = config_GetInt( p_demux, "avi-index" );
641 if( i_do_index == 1 ) /* Always fix */
644 if( p_sys->b_seekable )
646 AVI_IndexCreate( p_demux );
650 msg_Warn( p_demux, "cannot create index (unseekable stream)" );
651 AVI_IndexLoad( p_demux );
656 AVI_IndexLoad( p_demux );
659 /* *** movie length in sec *** */
660 p_sys->i_length = AVI_MovieGetLength( p_demux );
661 if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
662 (mtime_t)p_avih->i_microsecperframe /
665 msg_Warn( p_demux, "broken or missing index, 'seek' will be "
666 "approximative or will exhibit strange behavior" );
667 if( i_do_index == 0 && !b_index )
669 if( !p_sys->b_seekable ) {
674 i_create = intf_UserYesNo( p_demux, _("AVI Index") ,
675 _( "This AVI file is broken. Seeking will not "
676 "work correctly.\nDo you want to "
677 "try to repair it?\n\nThis might take a long time." ),
678 _( "Repair" ), _( "Don't repair" ), _( "Cancel") );
679 if( i_create == DIALOG_OK_YES )
682 msg_Dbg( p_demux, "Fixing AVI index" );
685 else if( i_create == DIALOG_CANCELLED )
688 vlc_object_kill( p_demux->p_parent );
694 /* fix some BeOS MediaKit generated file */
695 for( i = 0 ; i < p_sys->i_track; i++ )
697 avi_track_t *tk = p_sys->track[i];
698 avi_chunk_list_t *p_strl;
699 avi_chunk_strh_t *p_strh;
700 avi_chunk_strf_auds_t *p_auds;
702 if( tk->i_cat != AUDIO_ES )
706 if( tk->i_idxnb < 1 ||
708 tk->i_samplesize != 0 )
712 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
713 p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
714 p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
716 if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
717 (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
719 int64_t i_track_length =
720 tk->p_index[tk->i_idxnb-1].i_length +
721 tk->p_index[tk->i_idxnb-1].i_lengthtotal;
722 mtime_t i_length = (mtime_t)p_avih->i_totalframes *
723 (mtime_t)p_avih->i_microsecperframe;
727 msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
730 tk->i_samplesize = 1;
731 tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
732 msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
736 if( p_sys->b_seekable )
738 /* we have read all chunk so go back to movi */
739 stream_Seek( p_demux->s, p_movi->i_chunk_pos );
741 /* Skip movi header */
742 stream_Read( p_demux->s, NULL, 12 );
744 p_sys->i_movi_begin = p_movi->i_chunk_pos;
750 vlc_meta_Delete( p_sys->meta );
752 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
757 /*****************************************************************************
758 * Close: frees unused data
759 *****************************************************************************/
760 static void Close ( vlc_object_t * p_this )
762 demux_t * p_demux = (demux_t *)p_this;
764 demux_sys_t *p_sys = p_demux->p_sys ;
766 for( i = 0; i < p_sys->i_track; i++ )
768 if( p_sys->track[i] )
770 if( p_sys->track[i]->p_out_muxed )
771 stream_DemuxDelete( p_sys->track[i]->p_out_muxed );
772 free( p_sys->track[i]->p_index );
773 free( p_sys->track[i]->p_extra );
774 free( p_sys->track[i] );
777 free( p_sys->track );
778 AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
779 vlc_meta_Delete( p_sys->meta );
784 /*****************************************************************************
785 * Demux_Seekable: reads and demuxes data packets for stream seekable
786 *****************************************************************************
787 * AVIDemux: reads and demuxes data packets
788 *****************************************************************************
789 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
790 *****************************************************************************/
797 off_t i_posf; /* where we will read :
798 if i_idxposb == 0 : begining of chunk (+8 to acces data)
799 else : point on data directly */
800 } avi_track_toread_t;
802 static int Demux_Seekable( demux_t *p_demux )
804 demux_sys_t *p_sys = p_demux->p_sys;
806 unsigned int i_track_count = 0;
807 unsigned int i_track;
809 /* cannot be more than 100 stream (dcXX or wbXX) */
810 avi_track_toread_t toread[100];
813 /* detect new selected/unselected streams */
814 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
816 avi_track_t *tk = p_sys->track[i_track];
819 if( p_sys->b_muxed && tk->p_out_muxed )
822 tk->b_activated = true;
826 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
827 if( b && !tk->b_activated )
829 if( p_sys->b_seekable)
831 AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
833 tk->b_activated = true;
835 else if( !b && tk->b_activated )
837 tk->b_activated = false;
845 if( i_track_count <= 0 )
847 int64_t i_length = p_sys->i_length * (mtime_t)1000000;
849 p_sys->i_time += 25*1000; /* read 25ms */
852 if( p_sys->i_time >= i_length )
856 msg_Warn( p_demux, "no track selected, exiting..." );
860 /* wait for the good time */
861 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
862 p_sys->i_time += 25*1000; /* read 25ms */
865 for( i_track = 0; i_track < p_sys->i_track; i_track++ )
867 avi_track_t *tk = p_sys->track[i_track];
870 toread[i_track].b_ok = tk->b_activated;
871 if( tk->i_idxposc < tk->i_idxnb )
873 toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
874 if( tk->i_idxposb > 0 )
876 toread[i_track].i_posf += 8 + tk->i_idxposb;
881 toread[i_track].i_posf = -1;
884 i_dpts = p_sys->i_time - AVI_GetPTS( tk );
886 if( tk->i_samplesize )
888 toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
892 toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
897 toread[i_track].i_toread *= -1;
912 /* search for first chunk to be read */
913 for( i = 0, b_done = true, i_pos = -1; i < p_sys->i_track; i++ )
915 if( !toread[i].b_ok ||
916 AVI_GetDPTS( p_sys->track[i],
917 toread[i].i_toread ) <= -25 * 1000 )
922 if( toread[i].i_toread > 0 )
924 b_done = false; /* not yet finished */
926 if( toread[i].i_posf > 0 )
928 if( i_pos == -1 || i_pos > toread[i].i_posf )
931 i_pos = toread[i].i_posf;
938 for( i = 0; i < p_sys->i_track; i++ )
943 msg_Warn( p_demux, "all tracks have failed, exiting..." );
949 int i_loop_count = 0;
951 /* no valid index, we will parse directly the stream
952 * in case we fail we will disable all finished stream */
953 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
955 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
956 if( AVI_PacketNext( p_demux ) )
958 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
963 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
970 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
973 "cannot get packet header, track disabled" );
974 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
976 if( avi_pk.i_stream >= p_sys->i_track ||
977 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
979 if( AVI_PacketNext( p_demux ) )
982 "cannot skip packet, track disabled" );
983 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
986 /* Prevents from eating all the CPU with broken files.
987 * This value should be low enough so that it doesn't
988 * affect the reading speed too much. */
989 if( !(++i_loop_count % 1024) )
991 if( !vlc_object_alive (p_demux) ) return -1;
994 if( !(i_loop_count % (1024 * 10)) )
996 "don't seem to find any data..." );
1002 /* add this chunk to the index */
1005 index.i_id = avi_pk.i_fourcc;
1007 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1009 index.i_pos = avi_pk.i_pos;
1010 index.i_length = avi_pk.i_size;
1011 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1013 i_track = avi_pk.i_stream;
1014 tk = p_sys->track[i_track];
1015 /* do we will read this data ? */
1016 if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
1022 if( AVI_PacketNext( p_demux ) )
1025 "cannot skip packet, track disabled" );
1026 return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
1035 stream_Seek( p_demux->s, i_pos );
1038 /* Set the track to use */
1039 tk = p_sys->track[i_track];
1041 /* read thoses data */
1042 if( tk->i_samplesize )
1044 unsigned int i_toread;
1046 if( ( i_toread = toread[i_track].i_toread ) <= 0 )
1048 if( tk->i_samplesize > 1 )
1050 i_toread = tk->i_samplesize;
1054 i_toread = AVI_PTSToByte( tk, 20 * 1000 );
1055 i_toread = __MAX( i_toread, 100 );
1058 i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
1064 i_size = tk->p_index[tk->i_idxposc].i_length;
1067 if( tk->i_idxposb == 0 )
1069 i_size += 8; /* need to read and skip header */
1072 if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
1074 msg_Warn( p_demux, "failed reading data" );
1075 tk->b_activated = false;
1076 toread[i_track].b_ok = false;
1079 if( i_size % 2 ) /* read was padded on word boundary */
1081 p_frame->i_buffer--;
1084 if( tk->i_idxposb == 0 )
1086 p_frame->p_buffer += 8;
1087 p_frame->i_buffer -= 8;
1089 p_frame->i_pts = AVI_GetPTS( tk ) + 1;
1090 if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
1092 p_frame->i_flags = BLOCK_FLAG_TYPE_I;
1096 p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
1100 if( tk->i_samplesize )
1102 if( tk->i_idxposb == 0 )
1106 toread[i_track].i_toread -= i_size;
1107 tk->i_idxposb += i_size;
1108 if( tk->i_idxposb >=
1109 tk->p_index[tk->i_idxposc].i_length )
1117 int i_length = tk->p_index[tk->i_idxposc].i_length;
1120 if( tk->i_cat == AUDIO_ES )
1122 tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
1124 toread[i_track].i_toread--;
1127 if( tk->i_idxposc < tk->i_idxnb)
1129 toread[i_track].i_posf =
1130 tk->p_index[tk->i_idxposc].i_pos;
1131 if( tk->i_idxposb > 0 )
1133 toread[i_track].i_posf += 8 + tk->i_idxposb;
1139 toread[i_track].i_posf = -1;
1142 b_stream = true; /* at least one read succeed */
1144 if( tk->i_cat != VIDEO_ES )
1145 p_frame->i_dts = p_frame->i_pts;
1148 p_frame->i_dts = p_frame->i_pts;
1152 //p_pes->i_rate = p_demux->stream.control.i_rate;
1153 if( tk->p_out_muxed )
1154 stream_DemuxSend( tk->p_out_muxed, p_frame );
1156 es_out_Send( p_demux->out, tk->p_es, p_frame );
1161 /*****************************************************************************
1162 * Demux_UnSeekable: reads and demuxes data packets for unseekable file
1163 *****************************************************************************
1164 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
1165 *****************************************************************************/
1166 static int Demux_UnSeekable( demux_t *p_demux )
1168 demux_sys_t *p_sys = p_demux->p_sys;
1169 avi_track_t *p_stream_master = NULL;
1170 unsigned int i_stream;
1171 unsigned int i_packet;
1173 if( p_sys->b_muxed )
1175 msg_Err( p_demux, "Can not yet process muxed avi substreams without seeking" );
1176 return VLC_EGENERIC;
1179 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
1181 /* *** find master stream for data packet skipping algo *** */
1182 /* *** -> first video, if any, or first audio ES *** */
1183 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1185 avi_track_t *tk = p_sys->track[i_stream];
1188 es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
1190 if( b && tk->i_cat == VIDEO_ES )
1192 p_stream_master = tk;
1196 p_stream_master = tk;
1200 if( !p_stream_master )
1202 msg_Warn( p_demux, "no more stream selected" );
1206 p_sys->i_time = AVI_GetPTS( p_stream_master );
1208 for( i_packet = 0; i_packet < 10; i_packet++)
1210 #define p_stream p_sys->track[avi_pk.i_stream]
1212 avi_packet_t avi_pk;
1214 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1219 if( avi_pk.i_stream >= p_sys->i_track ||
1220 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1222 /* we haven't found an audio or video packet:
1223 * - we have seek, found first next packet
1224 * - others packets could be found, skip them
1226 switch( avi_pk.i_fourcc )
1228 case AVIFOURCC_JUNK:
1229 case AVIFOURCC_LIST:
1230 case AVIFOURCC_RIFF:
1231 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1232 case AVIFOURCC_idx1:
1235 return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
1237 return( 0 ); /* eof */
1240 "seems to have lost position, resync" );
1241 if( AVI_PacketSearch( p_demux ) )
1243 msg_Err( p_demux, "resync failed" );
1250 /* check for time */
1251 if( __ABS( AVI_GetPTS( p_stream ) -
1252 AVI_GetPTS( p_stream_master ) )< 600*1000 )
1254 /* load it and send to decoder */
1256 if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
1260 p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
1262 if( avi_pk.i_cat != VIDEO_ES )
1263 p_frame->i_dts = p_frame->i_pts;
1266 p_frame->i_dts = p_frame->i_pts;
1270 //p_pes->i_rate = p_demux->stream.control.i_rate;
1271 es_out_Send( p_demux->out, p_stream->p_es, p_frame );
1275 if( AVI_PacketNext( p_demux ) )
1281 /* *** update stream time position *** */
1282 if( p_stream->i_samplesize )
1284 p_stream->i_idxposb += avi_pk.i_size;
1288 if( p_stream->i_cat == AUDIO_ES )
1290 p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
1292 p_stream->i_idxposc++;
1302 /*****************************************************************************
1303 * Seek: goto to i_date or i_percent
1304 *****************************************************************************/
1305 static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
1308 demux_sys_t *p_sys = p_demux->p_sys;
1309 unsigned int i_stream;
1310 msg_Dbg( p_demux, "seek requested: %"PRId64" seconds %d%%",
1311 i_date / 1000000, i_percent );
1313 if( p_sys->b_seekable )
1315 if( !p_sys->i_length )
1317 avi_track_t *p_stream;
1320 /* use i_percent to create a true i_date */
1321 msg_Warn( p_demux, "seeking without index at %d%%"
1322 " only works for interleaved files", i_percent );
1323 if( i_percent >= 100 )
1325 msg_Warn( p_demux, "cannot seek so far !" );
1326 return VLC_EGENERIC;
1328 i_percent = __MAX( i_percent, 0 );
1330 /* try to find chunk that is at i_percent or the file */
1331 i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
1332 p_sys->i_movi_begin );
1333 /* search first selected stream */
1334 for( i_stream = 0, p_stream = NULL;
1335 i_stream < p_sys->i_track; i_stream++ )
1337 p_stream = p_sys->track[i_stream];
1338 if( p_stream->b_activated )
1343 if( !p_stream || !p_stream->b_activated )
1345 msg_Warn( p_demux, "cannot find any selected stream" );
1346 return VLC_EGENERIC;
1349 /* be sure that the index exist */
1350 if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
1352 msg_Warn( p_demux, "cannot seek" );
1353 return VLC_EGENERIC;
1356 while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
1357 p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
1359 /* search after i_idxposc */
1360 if( AVI_StreamChunkSet( p_demux,
1361 i_stream, p_stream->i_idxposc + 1 ) )
1363 msg_Warn( p_demux, "cannot seek" );
1364 return VLC_EGENERIC;
1368 i_date = AVI_GetPTS( p_stream );
1369 /* TODO better support for i_samplesize != 0 */
1370 msg_Dbg( p_demux, "estimate date %"PRId64, i_date );
1374 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
1376 avi_track_t *p_stream = p_sys->track[i_stream];
1378 if( !p_stream->b_activated )
1381 AVI_TrackSeek( p_demux, i_stream, i_date );
1383 p_sys->i_time = i_date;
1384 msg_Dbg( p_demux, "seek: %"PRId64" seconds", p_sys->i_time /1000000 );
1389 msg_Err( p_demux, "shouldn't yet be executed" );
1390 return VLC_EGENERIC;
1394 /*****************************************************************************
1396 *****************************************************************************/
1397 static double ControlGetPosition( demux_t *p_demux )
1399 demux_sys_t *p_sys = p_demux->p_sys;
1401 if( p_sys->i_length > 0 )
1403 return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
1405 else if( stream_Size( p_demux->s ) > 0 )
1411 /* search the more advanced selected es */
1412 for( i = 0; i < p_sys->i_track; i++ )
1414 avi_track_t *tk = p_sys->track[i];
1415 if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
1417 i_tmp = tk->p_index[tk->i_idxposc].i_pos +
1418 tk->p_index[tk->i_idxposc].i_length + 8;
1425 return (double)i64 / stream_Size( p_demux->s );
1430 static int Control( demux_t *p_demux, int i_query, va_list args )
1432 demux_sys_t *p_sys = p_demux->p_sys;
1440 case DEMUX_GET_POSITION:
1441 pf = (double*)va_arg( args, double * );
1442 *pf = ControlGetPosition( p_demux );
1444 case DEMUX_SET_POSITION:
1445 f = (double)va_arg( args, double );
1446 if( p_sys->b_seekable )
1448 i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
1449 return Seek( p_demux, i64, (int)(f * 100) );
1453 int64_t i_pos = stream_Size( p_demux->s ) * f;
1454 return stream_Seek( p_demux->s, i_pos );
1457 case DEMUX_GET_TIME:
1458 pi64 = (int64_t*)va_arg( args, int64_t * );
1459 *pi64 = p_sys->i_time;
1462 case DEMUX_SET_TIME:
1466 i64 = (int64_t)va_arg( args, int64_t );
1467 if( p_sys->i_length > 0 )
1469 i_percent = 100 * i64 / (p_sys->i_length*1000000);
1471 else if( p_sys->i_time > 0 )
1473 i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
1474 (double)i64 / (double)p_sys->i_time );
1476 return Seek( p_demux, i64, i_percent );
1478 case DEMUX_GET_LENGTH:
1479 pi64 = (int64_t*)va_arg( args, int64_t * );
1480 *pi64 = p_sys->i_length * (mtime_t)1000000;
1484 pf = (double*)va_arg( args, double * );
1486 for( i = 0; i < (int)p_sys->i_track; i++ )
1488 avi_track_t *tk = p_sys->track[i];
1489 if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
1491 *pf = (float)tk->i_rate / (float)tk->i_scale;
1496 case DEMUX_GET_META:
1497 p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
1498 vlc_meta_Merge( p_meta, p_sys->meta );
1502 return VLC_EGENERIC;
1506 /*****************************************************************************
1507 * Function to convert pts to chunk or byte
1508 *****************************************************************************/
1510 static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
1515 return (mtime_t)((int64_t)i_pts *
1516 (int64_t)tk->i_rate /
1517 (int64_t)tk->i_scale /
1520 static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
1522 if( !tk->i_scale || !tk->i_samplesize )
1525 return (mtime_t)((int64_t)i_pts *
1526 (int64_t)tk->i_rate /
1527 (int64_t)tk->i_scale /
1529 (int64_t)tk->i_samplesize );
1532 static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
1539 i_dpts = (mtime_t)( (int64_t)1000000 *
1541 (int64_t)tk->i_scale /
1542 (int64_t)tk->i_rate );
1544 if( tk->i_samplesize )
1546 return i_dpts / tk->i_samplesize;
1551 static mtime_t AVI_GetPTS( avi_track_t *tk )
1553 if( tk->i_samplesize )
1555 int64_t i_count = 0;
1557 /* we need a valid entry we will emulate one */
1558 if( tk->i_idxposc == tk->i_idxnb )
1562 /* use the last entry */
1563 i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
1564 + tk->p_index[tk->i_idxnb - 1].i_length;
1569 i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
1571 return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
1575 if( tk->i_cat == AUDIO_ES )
1577 return AVI_GetDPTS( tk, tk->i_blockno );
1581 return AVI_GetDPTS( tk, tk->i_idxposc );
1586 static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
1588 demux_sys_t *p_sys = p_demux->p_sys;
1589 avi_packet_t avi_pk;
1590 int i_loop_count = 0;
1592 /* find first chunk of i_stream that isn't in index */
1594 if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
1596 stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
1597 if( AVI_PacketNext( p_demux ) )
1599 return VLC_EGENERIC;
1604 stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
1609 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1611 if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
1613 msg_Warn( p_demux, "cannot get packet header" );
1614 return VLC_EGENERIC;
1616 if( avi_pk.i_stream >= p_sys->i_track ||
1617 ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
1619 if( AVI_PacketNext( p_demux ) )
1621 return VLC_EGENERIC;
1624 /* Prevents from eating all the CPU with broken files.
1625 * This value should be low enough so that it doesn't
1626 * affect the reading speed too much. */
1627 if( !(++i_loop_count % 1024) )
1629 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
1632 if( !(i_loop_count % (1024 * 10)) )
1633 msg_Warn( p_demux, "don't seem to find any data..." );
1638 /* add this chunk to the index */
1641 index.i_id = avi_pk.i_fourcc;
1643 AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
1645 index.i_pos = avi_pk.i_pos;
1646 index.i_length = avi_pk.i_size;
1647 AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
1649 if( avi_pk.i_stream == i_stream )
1654 if( AVI_PacketNext( p_demux ) )
1656 return VLC_EGENERIC;
1662 /* be sure that i_ck will be a valid index entry */
1663 static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
1666 demux_sys_t *p_sys = p_demux->p_sys;
1667 avi_track_t *p_stream = p_sys->track[i_stream];
1669 p_stream->i_idxposc = i_ck;
1670 p_stream->i_idxposb = 0;
1672 if( i_ck >= p_stream->i_idxnb )
1674 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1677 p_stream->i_idxposc++;
1678 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1680 return VLC_EGENERIC;
1683 } while( p_stream->i_idxposc < i_ck );
1689 /* XXX FIXME up to now, we assume that all chunk are one after one */
1690 static int AVI_StreamBytesSet( demux_t *p_demux,
1691 unsigned int i_stream,
1694 demux_sys_t *p_sys = p_demux->p_sys;
1695 avi_track_t *p_stream = p_sys->track[i_stream];
1697 if( ( p_stream->i_idxnb > 0 )
1698 &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
1699 p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
1701 /* index is valid to find the ck */
1702 /* uses dichototmie to be fast enougth */
1703 int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
1704 int i_idxmax = p_stream->i_idxnb;
1708 if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
1710 i_idxmax = i_idxposc ;
1711 i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
1715 if( p_stream->p_index[i_idxposc].i_lengthtotal +
1716 p_stream->p_index[i_idxposc].i_length <= i_byte)
1718 i_idxmin = i_idxposc ;
1719 i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
1723 p_stream->i_idxposc = i_idxposc;
1724 p_stream->i_idxposb = i_byte -
1725 p_stream->p_index[i_idxposc].i_lengthtotal;
1734 p_stream->i_idxposc = p_stream->i_idxnb - 1;
1735 p_stream->i_idxposb = 0;
1738 p_stream->i_idxposc++;
1739 if( AVI_StreamChunkFind( p_demux, i_stream ) )
1741 return VLC_EGENERIC;
1744 } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
1745 p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
1747 p_stream->i_idxposb = i_byte -
1748 p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
1753 static int AVI_TrackSeek( demux_t *p_demux,
1757 demux_sys_t *p_sys = p_demux->p_sys;
1758 avi_track_t *tk = p_sys->track[i_stream];
1760 #define p_stream p_sys->track[i_stream]
1763 i_oldpts = AVI_GetPTS( p_stream );
1765 if( !p_stream->i_samplesize )
1767 if( AVI_StreamChunkSet( p_demux,
1769 AVI_PTSToChunk( p_stream, i_date ) ) )
1771 return VLC_EGENERIC;
1774 if( p_stream->i_cat == AUDIO_ES )
1778 for( i = 0; i < tk->i_idxposc; i++ )
1780 if( tk->i_blocksize > 0 )
1782 tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
1792 "old:%"PRId64" %s new %"PRId64,
1794 i_oldpts > i_date ? ">" : "<",
1797 if( p_stream->i_cat == VIDEO_ES )
1799 /* search key frame */
1800 //if( i_date < i_oldpts || 1 )
1802 while( p_stream->i_idxposc > 0 &&
1803 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1806 if( AVI_StreamChunkSet( p_demux,
1808 p_stream->i_idxposc - 1 ) )
1810 return VLC_EGENERIC;
1813 if( p_stream->p_es )
1814 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, p_stream->p_es, i_date );
1819 while( p_stream->i_idxposc < p_stream->i_idxnb &&
1820 !( p_stream->p_index[p_stream->i_idxposc].i_flags &
1823 if( AVI_StreamChunkSet( p_demux,
1825 p_stream->i_idxposc + 1 ) )
1827 return VLC_EGENERIC;
1836 if( AVI_StreamBytesSet( p_demux,
1838 AVI_PTSToByte( p_stream, i_date ) ) )
1840 return VLC_EGENERIC;
1847 /****************************************************************************
1848 * Return true if it's a key frame
1849 ****************************************************************************/
1850 static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
1856 * startcode: 0x00000100 32bits
1857 * framenumber ? 5bits
1858 * piture type 0(I),1(P) 2bits
1860 if( GetDWBE( p_byte ) != 0x00000100 )
1862 /* it's not an msmpegv1 stream, strange...*/
1863 return AVIIF_KEYFRAME;
1865 return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
1868 case FOURCC_DIV3: /* wmv1 also */
1870 * picture type 0(I),1(P) 2bits
1872 return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1874 /* we should find first occurrence of 0x000001b6 (32bits)
1875 * startcode: 0x000001b6 32bits
1876 * piture type 0(I),1(P) 2bits
1878 if( GetDWBE( p_byte ) != 0x000001b6 )
1880 /* not true , need to find the first VOP header */
1881 return AVIIF_KEYFRAME;
1883 return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
1886 /* I can't do it, so say yes */
1887 return AVIIF_KEYFRAME;
1891 vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
1896 wf_tag_to_fourcc( i_codec, &i_codec, NULL );
1900 /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
1904 return VLC_FOURCC('m','r','l','e');
1953 return VLC_FOURCC( 'u', 'n', 'd', 'f' );
1957 /****************************************************************************
1959 ****************************************************************************/
1960 static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
1961 unsigned int *pi_number, unsigned int *pi_type )
1963 #define SET_PTR( p, v ) if( p ) *(p) = (v);
1966 c1 = ((uint8_t *)&i_id)[0];
1967 c2 = ((uint8_t *)&i_id)[1];
1969 if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
1971 SET_PTR( pi_number, 100 ); /* > max stream number */
1972 SET_PTR( pi_type, UNKNOWN_ES );
1976 SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
1977 switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
1980 SET_PTR( pi_type, AUDIO_ES );
1984 SET_PTR( pi_type, VIDEO_ES );
1987 SET_PTR( pi_type, UNKNOWN_ES );
1994 /****************************************************************************
1996 ****************************************************************************/
1997 static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
1999 const uint8_t *p_peek;
2001 if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
2003 return VLC_EGENERIC;
2005 p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
2006 p_pk->i_size = GetDWLE( p_peek + 4 );
2007 p_pk->i_pos = stream_Tell( p_demux->s );
2008 if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
2010 p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
2011 p_peek[10], p_peek[11] );
2018 memcpy( p_pk->i_peek, p_peek + 8, 8 );
2020 AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
2024 static int AVI_PacketNext( demux_t *p_demux )
2026 avi_packet_t avi_ck;
2029 if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
2031 return VLC_EGENERIC;
2034 if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
2035 ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
2039 else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
2040 avi_ck.i_type == AVIFOURCC_AVIX )
2046 i_skip = __EVEN( avi_ck.i_size ) + 8;
2049 if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
2051 return VLC_EGENERIC;
2056 static int AVI_PacketRead( demux_t *p_demux,
2058 block_t **pp_frame )
2062 i_size = __EVEN( p_pk->i_size + 8 );
2064 if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
2066 return VLC_EGENERIC;
2068 (*pp_frame)->p_buffer += 8;
2069 (*pp_frame)->i_buffer -= 8;
2071 if( i_size != p_pk->i_size + 8 )
2073 (*pp_frame)->i_buffer--;
2079 static int AVI_PacketSearch( demux_t *p_demux )
2081 demux_sys_t *p_sys = p_demux->p_sys;
2082 avi_packet_t avi_pk;
2087 if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
2089 return VLC_EGENERIC;
2091 AVI_PacketGetHeader( p_demux, &avi_pk );
2092 if( avi_pk.i_stream < p_sys->i_track &&
2093 ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
2097 switch( avi_pk.i_fourcc )
2099 case AVIFOURCC_JUNK:
2100 case AVIFOURCC_LIST:
2101 case AVIFOURCC_RIFF:
2102 case AVIFOURCC_idx1:
2106 /* Prevents from eating all the CPU with broken files.
2107 * This value should be low enough so that it doesn't affect the
2108 * reading speed too much (not that we care much anyway because
2109 * this code is called only on broken files). */
2110 if( !(++i_count % 1024) )
2112 if( !vlc_object_alive (p_demux) ) return VLC_EGENERIC;
2115 if( !(i_count % (1024 * 10)) )
2116 msg_Warn( p_demux, "trying to resync..." );
2121 /****************************************************************************
2123 ****************************************************************************/
2124 static void AVI_IndexAddEntry( demux_sys_t *p_sys,
2126 avi_entry_t *p_index)
2128 avi_track_t *tk = p_sys->track[i_stream];
2130 /* Update i_movi_lastchunk_pos */
2131 if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
2133 p_sys->i_movi_lastchunk_pos = p_index->i_pos;
2137 if( tk->i_idxnb >= tk->i_idxmax )
2139 tk->i_idxmax += 16384;
2140 tk->p_index = realloc( tk->p_index,
2141 tk->i_idxmax * sizeof( avi_entry_t ) );
2142 if( tk->p_index == NULL )
2147 /* calculate cumulate length */
2148 if( tk->i_idxnb > 0 )
2150 p_index->i_lengthtotal =
2151 tk->p_index[tk->i_idxnb - 1].i_length +
2152 tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
2156 p_index->i_lengthtotal = 0;
2159 tk->p_index[tk->i_idxnb++] = *p_index;
2162 static int AVI_IndexLoad_idx1( demux_t *p_demux )
2164 demux_sys_t *p_sys = p_demux->p_sys;
2166 avi_chunk_list_t *p_riff;
2167 avi_chunk_list_t *p_movi;
2168 avi_chunk_idx1_t *p_idx1;
2170 unsigned int i_stream;
2171 unsigned int i_index;
2177 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2178 p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
2179 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2183 msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
2184 return VLC_EGENERIC;
2187 /* *** calculate offset *** */
2188 /* Well, avi is __SHIT__ so test more than one entry
2189 * (needed for some avi files) */
2191 for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
2193 if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
2195 i_offset = p_movi->i_chunk_pos + 8;
2200 /* Reset b_keyset */
2201 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2202 b_keyset[i_stream] = false;
2204 for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
2208 AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
2211 if( i_stream < p_sys->i_track &&
2212 i_cat == p_sys->track[i_stream]->i_cat )
2215 index.i_id = p_idx1->entry[i_index].i_fourcc;
2217 p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
2218 index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
2219 index.i_length = p_idx1->entry[i_index].i_length;
2220 AVI_IndexAddEntry( p_sys, i_stream, &index );
2222 if( index.i_flags&AVIIF_KEYFRAME )
2223 b_keyset[i_stream] = true;
2227 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2229 if( !b_keyset[i_stream] )
2231 avi_track_t *tk = p_sys->track[i_stream];
2233 msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
2234 for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
2235 tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
2241 static void __Parse_indx( demux_t *p_demux,
2243 avi_chunk_indx_t *p_indx )
2245 demux_sys_t *p_sys = p_demux->p_sys;
2249 msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
2250 if( p_indx->i_indexsubtype == 0 )
2252 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2254 index.i_id = p_indx->i_id;
2255 index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2256 index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
2257 index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
2259 AVI_IndexAddEntry( p_sys, i_stream, &index );
2262 else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
2264 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2266 index.i_id = p_indx->i_id;
2267 index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
2268 index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
2269 index.i_length = p_indx->idx.field[i].i_size;
2271 AVI_IndexAddEntry( p_sys, i_stream, &index );
2276 msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
2280 static void AVI_IndexLoad_indx( demux_t *p_demux )
2282 demux_sys_t *p_sys = p_demux->p_sys;
2283 unsigned int i_stream;
2286 avi_chunk_list_t *p_riff;
2287 avi_chunk_list_t *p_hdrl;
2289 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2290 p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
2292 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2294 avi_chunk_list_t *p_strl;
2295 avi_chunk_indx_t *p_indx;
2297 #define p_stream p_sys->track[i_stream]
2298 p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
2299 p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
2303 msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML "
2308 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
2310 __Parse_indx( p_demux, i_stream, p_indx );
2312 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
2315 for( i = 0; i < p_indx->i_entriesinuse; i++ )
2317 if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
2318 AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
2322 __Parse_indx( p_demux, i_stream, &ck_sub.indx );
2327 msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
2333 static void AVI_IndexLoad( demux_t *p_demux )
2335 demux_sys_t *p_sys = p_demux->p_sys;
2336 unsigned int i_stream;
2338 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2340 p_sys->track[i_stream]->i_idxnb = 0;
2341 p_sys->track[i_stream]->i_idxmax = 0;
2342 p_sys->track[i_stream]->p_index = NULL;
2347 AVI_IndexLoad_indx( p_demux );
2349 else if( AVI_IndexLoad_idx1( p_demux ) )
2351 /* try indx if idx1 failed as some "normal" file have indx too */
2352 AVI_IndexLoad_indx( p_demux );
2355 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2357 msg_Dbg( p_demux, "stream[%d] created %d index entries",
2358 i_stream, p_sys->track[i_stream]->i_idxnb );
2362 static void AVI_IndexCreate( demux_t *p_demux )
2364 demux_sys_t *p_sys = p_demux->p_sys;
2366 avi_chunk_list_t *p_riff;
2367 avi_chunk_list_t *p_movi;
2369 unsigned int i_stream;
2372 mtime_t i_dialog_update;
2375 p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
2376 p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
2380 msg_Err( p_demux, "cannot find p_movi" );
2384 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2386 p_sys->track[i_stream]->i_idxnb = 0;
2387 p_sys->track[i_stream]->i_idxmax = 0;
2388 p_sys->track[i_stream]->p_index = NULL;
2390 i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
2391 stream_Size( p_demux->s ) );
2393 stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
2394 msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
2397 /* Only show dialog if AVI is > 10MB */
2399 i_dialog_update = mdate();
2400 if( stream_Size( p_demux->s ) > 10000000 )
2401 i_dialog_id = intf_IntfProgress( p_demux, _("Fixing AVI Index..."), 0.0 );
2407 if( !vlc_object_alive (p_demux) )
2410 /* Don't update/check dialog too often */
2411 if( i_dialog_id > 0 && mdate() - i_dialog_update > 100000 )
2413 if( intf_ProgressIsCancelled( p_demux, i_dialog_id ) )
2416 double f_pos = 100.0 * stream_Tell( p_demux->s ) /
2417 stream_Size( p_demux->s );
2418 intf_ProgressUpdate( p_demux, i_dialog_id,
2419 _( "Fixing AVI Index..." ), f_pos, -1 );
2421 i_dialog_update = mdate();
2424 if( AVI_PacketGetHeader( p_demux, &pk ) )
2427 if( pk.i_stream < p_sys->i_track &&
2428 pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
2431 index.i_id = pk.i_fourcc;
2433 AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
2434 index.i_pos = pk.i_pos;
2435 index.i_length = pk.i_size;
2436 AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
2440 switch( pk.i_fourcc )
2442 case AVIFOURCC_idx1:
2445 avi_chunk_list_t *p_sysx;
2446 p_sysx = AVI_ChunkFind( &p_sys->ck_root,
2447 AVIFOURCC_RIFF, 1 );
2449 msg_Dbg( p_demux, "looking for new RIFF chunk" );
2450 if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24 ) )
2456 case AVIFOURCC_RIFF:
2457 msg_Dbg( p_demux, "new RIFF chunk found" );
2461 case AVIFOURCC_JUNK:
2465 msg_Warn( p_demux, "need resync, probably broken avi" );
2466 if( AVI_PacketSearch( p_demux ) )
2468 msg_Warn( p_demux, "lost sync, abord index creation" );
2474 if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
2475 AVI_PacketNext( p_demux ) )
2482 if( i_dialog_id > 0 )
2483 intf_UserHide( p_demux, i_dialog_id );
2485 for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
2487 msg_Dbg( p_demux, "stream[%d] creating %d index entries",
2488 i_stream, p_sys->track[i_stream]->i_idxnb );
2492 /*****************************************************************************
2494 *****************************************************************************/
2495 static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
2497 demux_sys_t *p_sys = p_demux->p_sys;
2501 for( i = 0; i < p_sys->i_track; i++ )
2503 avi_track_t *tk = p_sys->track[i];
2504 if( tk->i_idxposc >= tk->i_idxnb )
2506 tk->b_activated = false;
2507 if( tk->p_es ) es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, false );
2517 /****************************************************************************
2518 * AVI_MovieGetLength give max streams length in second
2519 ****************************************************************************/
2520 static mtime_t AVI_MovieGetLength( demux_t *p_demux )
2522 demux_sys_t *p_sys = p_demux->p_sys;
2523 mtime_t i_maxlength = 0;
2526 for( i = 0; i < p_sys->i_track; i++ )
2528 avi_track_t *tk = p_sys->track[i];
2531 /* fix length for each stream */
2532 if( tk->i_idxnb < 1 || !tk->p_index )
2537 if( tk->i_samplesize )
2539 i_length = AVI_GetDPTS( tk,
2540 tk->p_index[tk->i_idxnb-1].i_lengthtotal +
2541 tk->p_index[tk->i_idxnb-1].i_length );
2545 i_length = AVI_GetDPTS( tk, tk->i_idxnb );
2547 i_length /= (mtime_t)1000000; /* in seconds */
2550 "stream[%d] length:%"PRId64" (based on index)",
2553 i_maxlength = __MAX( i_maxlength, i_length );