avi.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * avi.c : AVI file Stream input module for vlc
- *****************************************************************************
- * Copyright (C) 2001-2004 VideoLAN
- * $Id: avi.c 9270 2004-11-10 13:05:27Z gbazin $
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h> /* malloc(), free() */
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include "vlc_meta.h"
- #include "codecs.h"
- #include "libavi.h"
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define INTERLEAVE_TEXT N_("Force interleaved method" )
- #define INTERLEAVE_LONGTEXT N_( "Force interleaved method" )
- #define INDEX_TEXT N_("Force index creation")
- #define INDEX_LONGTEXT N_(
- "Recreate a index for the AVI file so we can seek trough it more reliably." )
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- vlc_module_begin();
- set_description( _("AVI demuxer") );
- set_capability( "demux2", 212 );
- add_bool( "avi-interleaved", 0, NULL,
- INTERLEAVE_TEXT, INTERLEAVE_LONGTEXT, VLC_TRUE );
- add_bool( "avi-index", 0, NULL,
- INDEX_TEXT, INDEX_LONGTEXT, VLC_TRUE );
- set_callbacks( Open, Close );
- vlc_module_end();
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static int Control ( demux_t *, int, va_list );
- static int Seek ( demux_t *, mtime_t, int );
- static int Demux_Seekable ( demux_t * );
- static int Demux_UnSeekable( demux_t * );
- #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
- #define __ABS( x ) ( (x) < 0 ? (-(x)) : (x) )
- typedef struct
- {
- vlc_fourcc_t i_fourcc;
- off_t i_pos;
- uint32_t i_size;
- vlc_fourcc_t i_type; /* only for AVIFOURCC_LIST */
- uint8_t i_peek[8]; /* first 8 bytes */
- unsigned int i_stream;
- unsigned int i_cat;
- } avi_packet_t;
- typedef struct
- {
- vlc_fourcc_t i_id;
- uint32_t i_flags;
- off_t i_pos;
- uint32_t i_length;
- uint32_t i_lengthtotal;
- } avi_entry_t;
- typedef struct
- {
- vlc_bool_t b_activated;
- unsigned int i_cat; /* AUDIO_ES, VIDEO_ES */
- vlc_fourcc_t i_codec;
- int i_rate;
- int i_scale;
- int i_samplesize;
- es_out_id_t *p_es;
- avi_entry_t *p_index;
- unsigned int i_idxnb;
- unsigned int i_idxmax;
- unsigned int i_idxposc; /* numero of chunk */
- unsigned int i_idxposb; /* byte in the current chunk */
- /* For VBR audio only */
- unsigned int i_blockno;
- unsigned int i_blocksize;
- } avi_track_t;
- struct demux_sys_t
- {
- mtime_t i_time;
- mtime_t i_length;
- vlc_bool_t b_seekable;
- avi_chunk_t ck_root;
- vlc_bool_t b_odml;
- off_t i_movi_begin;
- off_t i_movi_lastchunk_pos; /* XXX position of last valid chunk */
- /* number of streams and information */
- unsigned int i_track;
- avi_track_t **track;
- /* meta */
- vlc_meta_t *meta;
- };
- static inline off_t __EVEN( off_t i )
- {
- return (i & 1) ? i + 1 : i;
- }
- static mtime_t AVI_PTSToChunk( avi_track_t *, mtime_t i_pts );
- static mtime_t AVI_PTSToByte ( avi_track_t *, mtime_t i_pts );
- static mtime_t AVI_GetDPTS ( avi_track_t *, int64_t i_count );
- static mtime_t AVI_GetPTS ( avi_track_t * );
- static int AVI_StreamChunkFind( demux_t *, unsigned int i_stream );
- static int AVI_StreamChunkSet ( demux_t *,
- unsigned int i_stream, unsigned int i_ck );
- static int AVI_StreamBytesSet ( demux_t *,
- unsigned int i_stream, off_t i_byte );
- vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t );
- static int AVI_GetKeyFlag ( vlc_fourcc_t , uint8_t * );
- static int AVI_PacketGetHeader( demux_t *, avi_packet_t *p_pk );
- static int AVI_PacketNext ( demux_t * );
- static int AVI_PacketRead ( demux_t *, avi_packet_t *, block_t **);
- static int AVI_PacketSearch ( demux_t * );
- static void AVI_IndexLoad ( demux_t * );
- static void AVI_IndexCreate ( demux_t * );
- static void AVI_IndexAddEntry( demux_sys_t *, int, avi_entry_t * );
- static mtime_t AVI_MovieGetLength( demux_t * );
- /*****************************************************************************
- * Stream management
- *****************************************************************************/
- static int AVI_TrackSeek ( demux_t *, int, mtime_t );
- static int AVI_TrackStopFinishedStreams( demux_t *);
- /* Remarks:
- - For VBR mp3 stream:
- count blocks by rounded-up chunksizes instead of chunks
- we need full emulation of dshow avi demuxer bugs :(
- fixes silly nandub-style a-v delaying in avi with vbr mp3...
- (from mplayer 2002/08/02)
- - to complete....
- */
- /*****************************************************************************
- * Open: check file and initializes AVI structures
- *****************************************************************************/
- static int Open( vlc_object_t * p_this )
- {
- demux_t *p_demux = (demux_t *)p_this;
- demux_sys_t *p_sys;
- avi_chunk_t ck_riff;
- avi_chunk_list_t *p_riff = (avi_chunk_list_t*)&ck_riff;
- avi_chunk_list_t *p_hdrl, *p_movi;
- avi_chunk_avih_t *p_avih;
- unsigned int i_track;
- unsigned int i, i_peeker;
- uint8_t *p_peek;
- /* Is it an avi file ? */
- if( stream_Peek( p_demux->s, &p_peek, 200 ) < 200 )
- {
- msg_Dbg( p_demux, "cannot peek()" );
- return VLC_EGENERIC;
- }
- for( i_peeker = 0; i_peeker < 188; i_peeker++ )
- {
- if( !strncmp( &p_peek[0], "RIFF", 4 ) && !strncmp( &p_peek[8], "AVI ", 4 ) )
- {
- break;
- }
- p_peek++;
- }
- if( i_peeker == 188 )
- {
- msg_Warn( p_demux, "avi module discarded (invalid header)" );
- return VLC_EGENERIC;
- }
- /* Initialize input structures. */
- p_sys = p_demux->p_sys = malloc( sizeof(demux_sys_t) );
- memset( p_sys, 0, sizeof( demux_sys_t ) );
- p_sys->i_time = 0;
- p_sys->i_length = 0;
- p_sys->i_movi_lastchunk_pos = 0;
- p_sys->b_odml = VLC_FALSE;
- p_sys->i_track = 0;
- p_sys->track = NULL;
- p_sys->meta = NULL;
- stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &p_sys->b_seekable );
- p_demux->pf_control = Control;
- p_demux->pf_demux = Demux_Seekable;
- /* For unseekable stream, automaticaly use Demux_UnSeekable */
- if( !p_sys->b_seekable || config_GetInt( p_demux, "avi-interleaved" ) )
- {
- p_demux->pf_demux = Demux_UnSeekable;
- }
- if( i_peeker > 0 )
- {
- stream_Read( p_demux->s, NULL, i_peeker );
- }
- if( AVI_ChunkReadRoot( p_demux->s, &p_sys->ck_root ) )
- {
- msg_Err( p_demux, "avi module discarded (invalid file)" );
- return VLC_EGENERIC;
- }
- if( AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF ) > 1 )
- {
- unsigned int i_count =
- AVI_ChunkCount( &p_sys->ck_root, AVIFOURCC_RIFF );
- msg_Warn( p_demux, "multiple riff -> OpenDML ?" );
- for( i = 1; i < i_count; i++ )
- {
- avi_chunk_list_t *p_sysx;
- p_sysx = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, i );
- if( p_sysx->i_type == AVIFOURCC_AVIX )
- {
- msg_Warn( p_demux, "detected OpenDML file" );
- p_sys->b_odml = VLC_TRUE;
- break;
- }
- }
- }
- p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0 );
- p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
- p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0 );
- if( !p_hdrl || !p_movi )
- {
- msg_Err( p_demux, "avi module discarded (invalid file)" );
- goto error;
- }
- if( !( p_avih = AVI_ChunkFind( p_hdrl, AVIFOURCC_avih, 0 ) ) )
- {
- msg_Err( p_demux, "cannot find avih chunk" );
- goto error;
- }
- i_track = AVI_ChunkCount( p_hdrl, AVIFOURCC_strl );
- if( p_avih->i_streams != i_track )
- {
- msg_Warn( p_demux,
- "found %d stream but %d are declared",
- i_track, p_avih->i_streams );
- }
- if( i_track == 0 )
- {
- msg_Err( p_demux, "no stream defined!" );
- goto error;
- }
- /* print information on streams */
- msg_Dbg( p_demux, "AVIH: %d stream, flags %s%s%s%s ",
- i_track,
- p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
- p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
- p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
- p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
- if( ( p_sys->meta = vlc_meta_New() ) )
- {
- char buffer[200];
- sprintf( buffer, "%s%s%s%s",
- p_avih->i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
- p_avih->i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
- p_avih->i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
- p_avih->i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"" );
- vlc_meta_Add( p_sys->meta, VLC_META_SETTING, buffer );
- }
- /* now read info on each stream and create ES */
- for( i = 0 ; i < i_track; i++ )
- {
- avi_track_t *tk = malloc( sizeof( avi_track_t ) );
- avi_chunk_list_t *p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
- avi_chunk_strh_t *p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
- avi_chunk_STRING_t *p_strn = AVI_ChunkFind( p_strl, AVIFOURCC_strn, 0 );
- avi_chunk_strf_auds_t *p_auds;
- avi_chunk_strf_vids_t *p_vids;
- es_format_t fmt;
- tk->b_activated = VLC_FALSE;
- tk->p_index = 0;
- tk->i_idxnb = 0;
- tk->i_idxmax = 0;
- tk->i_idxposc = 0;
- tk->i_idxposb = 0;
- tk->i_blockno = 0;
- tk->i_blocksize = 0;
- p_vids = (avi_chunk_strf_vids_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
- p_auds = (avi_chunk_strf_auds_t*)AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
- if( p_strl == NULL || p_strh == NULL || p_auds == NULL || p_vids == NULL )
- {
- msg_Warn( p_demux, "stream[%d] incomplete", i );
- continue;
- }
- tk->i_rate = p_strh->i_rate;
- tk->i_scale = p_strh->i_scale;
- tk->i_samplesize = p_strh->i_samplesize;
- msg_Dbg( p_demux, "stream[%d] rate:%d scale:%d samplesize:%d",
- i, tk->i_rate, tk->i_scale, tk->i_samplesize );
- switch( p_strh->i_type )
- {
- case( AVIFOURCC_auds ):
- tk->i_cat = AUDIO_ES;
- tk->i_codec = AVI_FourccGetCodec( AUDIO_ES,
- p_auds->p_wf->wFormatTag );
- if( ( tk->i_blocksize = p_auds->p_wf->nBlockAlign ) == 0 )
- {
- if( p_auds->p_wf->wFormatTag == 1 )
- {
- tk->i_blocksize = p_auds->p_wf->nChannels * (p_auds->p_wf->wBitsPerSample/8);
- }
- else
- {
- tk->i_blocksize = 1;
- }
- }
- es_format_Init( &fmt, AUDIO_ES, tk->i_codec );
- fmt.audio.i_channels = p_auds->p_wf->nChannels;
- fmt.audio.i_rate = p_auds->p_wf->nSamplesPerSec;
- fmt.i_bitrate = p_auds->p_wf->nAvgBytesPerSec*8;
- fmt.audio.i_blockalign = p_auds->p_wf->nBlockAlign;
- fmt.audio.i_bitspersample = p_auds->p_wf->wBitsPerSample;
- fmt.i_extra = __MIN( p_auds->p_wf->cbSize,
- p_auds->i_chunk_size - sizeof(WAVEFORMATEX) );
- fmt.p_extra = &p_auds->p_wf[1];
- msg_Dbg( p_demux, "stream[%d] audio(0x%x) %d channels %dHz %dbits",
- i, p_auds->p_wf->wFormatTag, p_auds->p_wf->nChannels,
- p_auds->p_wf->nSamplesPerSec, p_auds->p_wf->wBitsPerSample);
- break;
- case( AVIFOURCC_vids ):
- tk->i_cat = VIDEO_ES;
- tk->i_codec = AVI_FourccGetCodec( VIDEO_ES,
- p_vids->p_bih->biCompression );
- if( p_vids->p_bih->biCompression == 0x00 )
- {
- switch( p_vids->p_bih->biBitCount )
- {
- case 32:
- tk->i_codec = VLC_FOURCC('R','V','3','2');
- break;
- case 24:
- tk->i_codec = VLC_FOURCC('R','V','2','4');
- break;
- case 16:
- /* tk->i_codec = VLC_FOURCC('R','V','1','6');*/
- /* break;*/
- case 15:
- tk->i_codec = VLC_FOURCC('R','V','1','5');
- break;
- case 9:
- tk->i_codec = VLC_FOURCC( 'Y', 'V', 'U', '9' ); /* <- TODO check that */
- break;
- }
- es_format_Init( &fmt, VIDEO_ES, tk->i_codec );
- if( p_vids->p_bih->biBitCount == 24 )
- {
- /* This is in BGR format */
- fmt.video.i_bmask = 0x00ff0000;
- fmt.video.i_gmask = 0x0000ff00;
- fmt.video.i_rmask = 0x000000ff;
- }
- }
- else
- {
- es_format_Init( &fmt, VIDEO_ES, p_vids->p_bih->biCompression );
- if( tk->i_codec == FOURCC_mp4v &&
- !strncasecmp( (char*)&p_strh->i_handler, "XVID", 4 ) )
- {
- fmt.i_codec = VLC_FOURCC( 'X', 'V', 'I', 'D' );
- }
- }
- tk->i_samplesize = 0;
- fmt.video.i_width = p_vids->p_bih->biWidth;
- fmt.video.i_height = p_vids->p_bih->biHeight;
- fmt.video.i_bits_per_pixel = p_vids->p_bih->biBitCount;
- fmt.i_extra =
- __MIN( p_vids->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
- p_vids->i_chunk_size - sizeof(BITMAPINFOHEADER) );
- fmt.p_extra = &p_vids->p_bih[1];
- msg_Dbg( p_demux, "stream[%d] video(%4.4s) %dx%d %dbpp %ffps",
- i,
- (char*)&p_vids->p_bih->biCompression,
- p_vids->p_bih->biWidth,
- p_vids->p_bih->biHeight,
- p_vids->p_bih->biBitCount,
- (float)tk->i_rate/(float)tk->i_scale );
- if( p_vids->p_bih->biCompression == 0x00 )
- {
- /* RGB DIB are coded from bottom to top */
- fmt.video.i_height =
- (unsigned int)(-(int)p_vids->p_bih->biHeight);
- }
- break;
- case( AVIFOURCC_txts):
- tk->i_cat = SPU_ES;
- tk->i_codec = VLC_FOURCC( 's', 'u', 'b', 't' );
- msg_Dbg( p_demux, "stream[%d] subtitles", i );
- es_format_Init( &fmt, SPU_ES, tk->i_codec );
- break;
-
- case( AVIFOURCC_mids):
- msg_Dbg( p_demux, "stream[%d] midi is UNSUPPORTED", i );
- default:
- msg_Warn( p_demux, "stream[%d] unknown type", i );
- free( tk );
- continue;
- }
- if( p_strn )
- {
- fmt.psz_description = strdup( p_strn->p_str );
- }
- tk->p_es = es_out_Add( p_demux->out, &fmt );
- TAB_APPEND( p_sys->i_track, p_sys->track, tk );
- }
- if( p_sys->i_track <= 0 )
- {
- msg_Err( p_demux, "no valid track" );
- goto error;
- }
- if( config_GetInt( p_demux, "avi-index" ) )
- {
- if( p_sys->b_seekable )
- {
- AVI_IndexCreate( p_demux );
- }
- else
- {
- msg_Warn( p_demux, "cannot create index (unseekable stream)" );
- AVI_IndexLoad( p_demux );
- }
- }
- else
- {
- AVI_IndexLoad( p_demux );
- }
- /* *** movie length in sec *** */
- p_sys->i_length = AVI_MovieGetLength( p_demux );
- if( p_sys->i_length < (mtime_t)p_avih->i_totalframes *
- (mtime_t)p_avih->i_microsecperframe /
- (mtime_t)1000000 )
- {
- msg_Warn( p_demux, "broken or missing index, 'seek' will be axproximative or will have strange behavour" );
- }
- /* fix some BeOS MediaKit generated file */
- for( i = 0 ; i < p_sys->i_track; i++ )
- {
- avi_track_t *tk = p_sys->track[i];
- avi_chunk_list_t *p_strl;
- avi_chunk_strh_t *p_strh;
- avi_chunk_strf_auds_t *p_auds;
- if( tk->i_cat != AUDIO_ES )
- {
- continue;
- }
- if( tk->i_idxnb < 1 ||
- tk->i_scale != 1 ||
- tk->i_samplesize != 0 )
- {
- continue;
- }
- p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i );
- p_strh = AVI_ChunkFind( p_strl, AVIFOURCC_strh, 0 );
- p_auds = AVI_ChunkFind( p_strl, AVIFOURCC_strf, 0 );
- if( p_auds->p_wf->wFormatTag != WAVE_FORMAT_PCM &&
- (unsigned int)tk->i_rate == p_auds->p_wf->nSamplesPerSec )
- {
- int64_t i_track_length =
- tk->p_index[tk->i_idxnb-1].i_length +
- tk->p_index[tk->i_idxnb-1].i_lengthtotal;
- mtime_t i_length = (mtime_t)p_avih->i_totalframes *
- (mtime_t)p_avih->i_microsecperframe;
- if( i_length == 0 )
- {
- msg_Warn( p_demux, "track[%d] cannot be fixed (BeOS MediaKit generated)", i );
- continue;
- }
- tk->i_samplesize = 1;
- tk->i_rate = i_track_length * (int64_t)1000000/ i_length;
- msg_Warn( p_demux, "track[%d] fixed with rate=%d scale=%d (BeOS MediaKit generated)", i, tk->i_rate, tk->i_scale );
- }
- }
- if( p_sys->b_seekable )
- {
- /* we have read all chunk so go back to movi */
- stream_Seek( p_demux->s, p_movi->i_chunk_pos );
- }
- /* Skip movi header */
- stream_Read( p_demux->s, NULL, 12 );
- p_sys->i_movi_begin = p_movi->i_chunk_pos;
- return VLC_SUCCESS;
- error:
- if( p_sys->meta )
- {
- vlc_meta_Delete( p_sys->meta );
- }
- AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /*****************************************************************************
- * Close: frees unused data
- *****************************************************************************/
- static void Close ( vlc_object_t * p_this )
- {
- demux_t * p_demux = (demux_t *)p_this;
- unsigned int i;
- demux_sys_t *p_sys = p_demux->p_sys ;
- for( i = 0; i < p_sys->i_track; i++ )
- {
- if( p_sys->track[i] )
- {
- FREE( p_sys->track[i]->p_index );
- free( p_sys->track[i] );
- }
- }
- FREE( p_sys->track );
- AVI_ChunkFreeRoot( p_demux->s, &p_sys->ck_root );
- vlc_meta_Delete( p_sys->meta );
- free( p_sys );
- }
- /*****************************************************************************
- * Demux_Seekable: reads and demuxes data packets for stream seekable
- *****************************************************************************
- * AVIDemux: reads and demuxes data packets
- *****************************************************************************
- * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
- *****************************************************************************/
- typedef struct
- {
- vlc_bool_t b_ok;
- int i_toread;
- off_t i_posf; /* where we will read :
- if i_idxposb == 0 : begining of chunk (+8 to acces data)
- else : point on data directly */
- } avi_track_toread_t;
- static int Demux_Seekable( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- unsigned int i_track_count = 0;
- unsigned int i_track;
- vlc_bool_t b_stream;
- /* cannot be more than 100 stream (dcXX or wbXX) */
- avi_track_toread_t toread[100];
- /* detect new selected/unselected streams */
- for( i_track = 0; i_track < p_sys->i_track; i_track++ )
- {
- avi_track_t *tk = p_sys->track[i_track];
- vlc_bool_t b;
- es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
- if( b && !tk->b_activated )
- {
- if( p_sys->b_seekable)
- {
- AVI_TrackSeek( p_demux, i_track, p_sys->i_time );
- }
- tk->b_activated = VLC_TRUE;
- }
- else if( !b && tk->b_activated )
- {
- tk->b_activated = VLC_FALSE;
- }
- if( b )
- {
- i_track_count++;
- }
- }
- if( i_track_count <= 0 )
- {
- int64_t i_length = p_sys->i_length * (mtime_t)1000000;
- p_sys->i_time += 25*1000; /* read 25ms */
- if( i_length > 0 )
- {
- if( p_sys->i_time >= i_length )
- return 0;
- return 1;
- }
- msg_Warn( p_demux, "no track selected, exiting..." );
- return 0;
- }
- /* wait for the good time */
- es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
- p_sys->i_time += 25*1000; /* read 25ms */
- /* init toread */
- for( i_track = 0; i_track < p_sys->i_track; i_track++ )
- {
- avi_track_t *tk = p_sys->track[i_track];
- mtime_t i_dpts;
- toread[i_track].b_ok = tk->b_activated;
- if( tk->i_idxposc < tk->i_idxnb )
- {
- toread[i_track].i_posf = tk->p_index[tk->i_idxposc].i_pos;
- if( tk->i_idxposb > 0 )
- {
- toread[i_track].i_posf += 8 + tk->i_idxposb;
- }
- }
- else
- {
- toread[i_track].i_posf = -1;
- }
- i_dpts = p_sys->i_time - AVI_GetPTS( tk );
- if( tk->i_samplesize )
- {
- toread[i_track].i_toread = AVI_PTSToByte( tk, __ABS( i_dpts ) );
- }
- else
- {
- toread[i_track].i_toread = AVI_PTSToChunk( tk, __ABS( i_dpts ) );
- }
- if( i_dpts < 0 )
- {
- toread[i_track].i_toread *= -1;
- }
- }
- b_stream = VLC_FALSE;
- for( ;; )
- {
- avi_track_t *tk;
- vlc_bool_t b_done;
- block_t *p_frame;
- off_t i_pos;
- unsigned int i;
- size_t i_size;
- /* search for first chunk to be read */
- for( i = 0, b_done = VLC_TRUE, i_pos = -1; i < p_sys->i_track; i++ )
- {
- if( !toread[i].b_ok ||
- AVI_GetDPTS( p_sys->track[i],
- toread[i].i_toread ) <= -25 * 1000 )
- {
- continue;
- }
- if( toread[i].i_toread > 0 )
- {
- b_done = VLC_FALSE; /* not yet finished */
- }
- if( toread[i].i_posf > 0 )
- {
- if( i_pos == -1 || i_pos > toread[i_track].i_posf )
- {
- i_track = i;
- i_pos = toread[i].i_posf;
- }
- }
- }
- if( b_done )
- {
- return( 1 );
- }
- if( i_pos == -1 )
- {
- int i_loop_count = 0;
- /* no valid index, we will parse directly the stream
- * in case we fail we will disable all finished stream */
- if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
- {
- stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
- if( AVI_PacketNext( p_demux ) )
- {
- return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
- }
- }
- else
- {
- stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
- }
- for( ;; )
- {
- avi_packet_t avi_pk;
- if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
- {
- msg_Warn( p_demux,
- "cannot get packet header, track disabled" );
- return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
- }
- if( avi_pk.i_stream >= p_sys->i_track ||
- ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
- {
- if( AVI_PacketNext( p_demux ) )
- {
- msg_Warn( p_demux,
- "cannot skip packet, track disabled" );
- return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
- }
- /* Prevents from eating all the CPU with broken files.
- * This value should be low enough so that it doesn't
- * affect the reading speed too much. */
- if( !(++i_loop_count % 1024) )
- {
- if( p_demux->b_die ) return -1;
- msleep( 10000 );
- if( !(i_loop_count % (1024 * 10)) )
- msg_Warn( p_demux,
- "don't seem to find any data..." );
- }
- continue;
- }
- else
- {
- /* add this chunk to the index */
- avi_entry_t index;
- index.i_id = avi_pk.i_fourcc;
- index.i_flags =
- AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
- avi_pk.i_peek);
- index.i_pos = avi_pk.i_pos;
- index.i_length = avi_pk.i_size;
- AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
- i_track = avi_pk.i_stream;
- tk = p_sys->track[i_track];
- /* do we will read this data ? */
- if( AVI_GetDPTS( tk, toread[i_track].i_toread ) > -25*1000 )
- {
- break;
- }
- else
- {
- if( AVI_PacketNext( p_demux ) )
- {
- msg_Warn( p_demux,
- "cannot skip packet, track disabled" );
- return( AVI_TrackStopFinishedStreams( p_demux ) ? 0 : 1 );
- }
- }
- }
- }
- }
- else
- {
- stream_Seek( p_demux->s, i_pos );
- }
- /* Set the track to use */
- tk = p_sys->track[i_track];
- /* read thoses data */
- if( tk->i_samplesize )
- {
- unsigned int i_toread;
- if( ( i_toread = toread[i_track].i_toread ) <= 0 )
- {
- if( tk->i_samplesize > 1 )
- {
- i_toread = tk->i_samplesize;
- }
- else
- {
- i_toread = AVI_PTSToByte( tk, 20 * 1000 );
- i_toread = __MAX( i_toread, 100 );
- }
- }
- i_size = __MIN( tk->p_index[tk->i_idxposc].i_length -
- tk->i_idxposb,
- i_toread );
- }
- else
- {
- i_size = tk->p_index[tk->i_idxposc].i_length;
- }
- if( tk->i_idxposb == 0 )
- {
- i_size += 8; /* need to read and skip header */
- }
- if( ( p_frame = stream_Block( p_demux->s, __EVEN( i_size ) ) )==NULL )
- {
- msg_Warn( p_demux, "failled reading data" );
- tk->b_activated = VLC_FALSE;
- toread[i_track].b_ok = VLC_FALSE;
- continue;
- }
- if( i_size % 2 ) /* read was padded on word boundary */
- {
- p_frame->i_buffer--;
- }
- /* skip header */
- if( tk->i_idxposb == 0 )
- {
- p_frame->p_buffer += 8;
- p_frame->i_buffer -= 8;
- }
- p_frame->i_pts = AVI_GetPTS( tk ) + 1;
- if( tk->p_index[tk->i_idxposc].i_flags&AVIIF_KEYFRAME )
- {
- p_frame->i_flags = BLOCK_FLAG_TYPE_I;
- }
- else
- {
- p_frame->i_flags = BLOCK_FLAG_TYPE_PB;
- }
- /* read data */
- if( tk->i_samplesize )
- {
- if( tk->i_idxposb == 0 )
- {
- i_size -= 8;
- }
- toread[i_track].i_toread -= i_size;
- tk->i_idxposb += i_size;
- if( tk->i_idxposb >=
- tk->p_index[tk->i_idxposc].i_length )
- {
- tk->i_idxposb = 0;
- tk->i_idxposc++;
- }
- }
- else
- {
- int i_length = tk->p_index[tk->i_idxposc].i_length;
- tk->i_idxposc++;
- if( tk->i_cat == AUDIO_ES )
- {
- tk->i_blockno += tk->i_blocksize > 0 ? ( i_length + tk->i_blocksize - 1 ) / tk->i_blocksize : 1;
- }
- toread[i_track].i_toread--;
- }
- if( tk->i_idxposc < tk->i_idxnb)
- {
- toread[i_track].i_posf =
- tk->p_index[tk->i_idxposc].i_pos;
- if( tk->i_idxposb > 0 )
- {
- toread[i_track].i_posf += 8 + tk->i_idxposb;
- }
- }
- else
- {
- toread[i_track].i_posf = -1;
- }
- b_stream = VLC_TRUE; /* at least one read succeed */
- if( tk->i_cat != VIDEO_ES )
- p_frame->i_dts = p_frame->i_pts;
- else
- {
- p_frame->i_dts = p_frame->i_pts;
- p_frame->i_pts = 0;
- }
- //p_pes->i_rate = p_demux->stream.control.i_rate;
- es_out_Send( p_demux->out, tk->p_es, p_frame );
- }
- }
- /*****************************************************************************
- * Demux_UnSeekable: reads and demuxes data packets for unseekable file
- *****************************************************************************
- * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
- *****************************************************************************/
- static int Demux_UnSeekable( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_track_t *p_stream_master = NULL;
- unsigned int i_stream;
- unsigned int i_packet;
- es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_time + 1 );
- /* *** find master stream for data packet skipping algo *** */
- /* *** -> first video, if any, or first audio ES *** */
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- avi_track_t *tk = p_sys->track[i_stream];
- vlc_bool_t b;
- es_out_Control( p_demux->out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
- if( b && tk->i_cat == VIDEO_ES )
- {
- p_stream_master = tk;
- }
- else if( b )
- {
- p_stream_master = tk;
- }
- }
- if( !p_stream_master )
- {
- msg_Warn( p_demux, "no more stream selected" );
- return( 0 );
- }
- p_sys->i_time = AVI_GetPTS( p_stream_master );
- for( i_packet = 0; i_packet < 10; i_packet++)
- {
- #define p_stream p_sys->track[avi_pk.i_stream]
- avi_packet_t avi_pk;
- if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
- {
- return( 0 );
- }
- if( avi_pk.i_stream >= p_sys->i_track ||
- ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
- {
- /* we haven't found an audio or video packet:
- * - we have seek, found first next packet
- * - others packets could be found, skip them
- */
- switch( avi_pk.i_fourcc )
- {
- case AVIFOURCC_JUNK:
- case AVIFOURCC_LIST:
- case AVIFOURCC_RIFF:
- return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
- case AVIFOURCC_idx1:
- if( p_sys->b_odml )
- {
- return( !AVI_PacketNext( p_demux ) ? 1 : 0 );
- }
- return( 0 ); /* eof */
- default:
- msg_Warn( p_demux,
- "seems to have lost position, resync" );
- if( AVI_PacketSearch( p_demux ) )
- {
- msg_Err( p_demux, "resync failed" );
- return( -1 );
- }
- }
- }
- else
- {
- /* check for time */
- if( __ABS( AVI_GetPTS( p_stream ) -
- AVI_GetPTS( p_stream_master ) )< 600*1000 )
- {
- /* load it and send to decoder */
- block_t *p_frame;
- if( AVI_PacketRead( p_demux, &avi_pk, &p_frame ) || p_frame == NULL )
- {
- return( -1 );
- }
- p_frame->i_pts = AVI_GetPTS( p_stream ) + 1;
- if( avi_pk.i_cat != VIDEO_ES )
- p_frame->i_dts = p_frame->i_pts;
- else
- {
- p_frame->i_dts = p_frame->i_pts;
- p_frame->i_pts = 0;
- }
- //p_pes->i_rate = p_demux->stream.control.i_rate;
- es_out_Send( p_demux->out, p_stream->p_es, p_frame );
- }
- else
- {
- if( AVI_PacketNext( p_demux ) )
- {
- return( 0 );
- }
- }
- /* *** update stream time position *** */
- if( p_stream->i_samplesize )
- {
- p_stream->i_idxposb += avi_pk.i_size;
- }
- else
- {
- if( p_stream->i_cat == AUDIO_ES )
- {
- p_stream->i_blockno += p_stream->i_blocksize > 0 ? ( avi_pk.i_size + p_stream->i_blocksize - 1 ) / p_stream->i_blocksize : 1;
- }
- p_stream->i_idxposc++;
- }
- }
- #undef p_stream
- }
- return( 1 );
- }
- /*****************************************************************************
- * Seek: goto to i_date or i_percent
- *****************************************************************************/
- static int Seek( demux_t *p_demux, mtime_t i_date, int i_percent )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- unsigned int i_stream;
- msg_Dbg( p_demux, "seek requested: "I64Fd" secondes %d%%",
- i_date / 1000000, i_percent );
- if( p_sys->b_seekable )
- {
- if( !p_sys->i_length )
- {
- avi_track_t *p_stream;
- int64_t i_pos;
- /* use i_percent to create a true i_date */
- msg_Warn( p_demux, "mmh, seeking without index at %d%%"
- " work only for interleaved file", i_percent );
- if( i_percent >= 100 )
- {
- msg_Warn( p_demux, "cannot seek so far !" );
- return VLC_EGENERIC;
- }
- i_percent = __MAX( i_percent, 0 );
- /* try to find chunk that is at i_percent or the file */
- i_pos = __MAX( i_percent * stream_Size( p_demux->s ) / 100,
- p_sys->i_movi_begin );
- /* search first selected stream */
- for( i_stream = 0, p_stream = NULL;
- i_stream < p_sys->i_track; i_stream++ )
- {
- p_stream = p_sys->track[i_stream];
- if( p_stream->b_activated )
- {
- break;
- }
- }
- if( !p_stream || !p_stream->b_activated )
- {
- msg_Warn( p_demux, "cannot find any selected stream" );
- return VLC_EGENERIC;
- }
- /* be sure that the index exist */
- if( AVI_StreamChunkSet( p_demux, i_stream, 0 ) )
- {
- msg_Warn( p_demux, "cannot seek" );
- return VLC_EGENERIC;
- }
- while( i_pos >= p_stream->p_index[p_stream->i_idxposc].i_pos +
- p_stream->p_index[p_stream->i_idxposc].i_length + 8 )
- {
- /* search after i_idxposc */
- if( AVI_StreamChunkSet( p_demux,
- i_stream, p_stream->i_idxposc + 1 ) )
- {
- msg_Warn( p_demux, "cannot seek" );
- return VLC_EGENERIC;
- }
- }
- i_date = AVI_GetPTS( p_stream );
- /* TODO better support for i_samplesize != 0 */
- msg_Dbg( p_demux, "estimate date "I64Fd, i_date );
- }
- #define p_stream p_sys->track[i_stream]
- p_sys->i_time = 0;
- /* seek for chunk based streams */
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- if( p_stream->b_activated && !p_stream->i_samplesize )
- /* if( p_stream->b_activated ) */
- {
- AVI_TrackSeek( p_demux, i_stream, i_date );
- p_sys->i_time = __MAX( AVI_GetPTS( p_stream ),
- p_sys->i_time );
- }
- }
- #if 1
- if( p_sys->i_time )
- {
- i_date = p_sys->i_time;
- }
- /* seek for bytes based streams */
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- if( p_stream->b_activated && p_stream->i_samplesize )
- {
- AVI_TrackSeek( p_demux, i_stream, i_date );
- /* p_sys->i_time = __MAX( AVI_GetPTS( p_stream ), p_sys->i_time );*/
- }
- }
- msg_Dbg( p_demux, "seek: "I64Fd" seconds", p_sys->i_time /1000000 );
- /* set true movie time */
- #endif
- if( !p_sys->i_time )
- {
- p_sys->i_time = i_date;
- }
- #undef p_stream
- return VLC_SUCCESS;
- }
- else
- {
- msg_Err( p_demux, "shouldn't yet be executed" );
- return VLC_EGENERIC;
- }
- }
- /*****************************************************************************
- * Control:
- *****************************************************************************
- *
- *****************************************************************************/
- static double ControlGetPosition( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- if( p_sys->i_length > 0 )
- {
- return (double)p_sys->i_time / (double)( p_sys->i_length * (mtime_t)1000000 );
- }
- else if( stream_Size( p_demux->s ) > 0 )
- {
- unsigned int i;
- int64_t i_tmp;
- int64_t i64 = 0;
- /* search the more advanced selected es */
- for( i = 0; i < p_sys->i_track; i++ )
- {
- avi_track_t *tk = p_sys->track[i];
- if( tk->b_activated && tk->i_idxposc < tk->i_idxnb )
- {
- i_tmp = tk->p_index[tk->i_idxposc].i_pos +
- tk->p_index[tk->i_idxposc].i_length + 8;
- if( i_tmp > i64 )
- {
- i64 = i_tmp;
- }
- }
- }
- return (double)i64 / (double)stream_Size( p_demux->s );
- }
- return 0.0;
- }
- static int Control( demux_t *p_demux, int i_query, va_list args )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- int i;
- double f, *pf;
- int64_t i64, *pi64;
- vlc_meta_t **pp_meta;
- switch( i_query )
- {
- case DEMUX_GET_POSITION:
- pf = (double*)va_arg( args, double * );
- *pf = ControlGetPosition( p_demux );
- return VLC_SUCCESS;
- case DEMUX_SET_POSITION:
- f = (double)va_arg( args, double );
- if( p_sys->b_seekable )
- {
- i64 = (mtime_t)(1000000.0 * p_sys->i_length * f );
- return Seek( p_demux, i64, (int)(f * 100) );
- }
- else
- {
- int64_t i_pos = stream_Size( p_demux->s ) * f;
- return stream_Seek( p_demux->s, i_pos );
- }
- case DEMUX_GET_TIME:
- pi64 = (int64_t*)va_arg( args, int64_t * );
- *pi64 = p_sys->i_time;
- return VLC_SUCCESS;
- case DEMUX_SET_TIME:
- {
- int i_percent = 0;
- i64 = (int64_t)va_arg( args, int64_t );
- if( p_sys->i_length > 0 )
- {
- i_percent = 100 * i64 / (p_sys->i_length*1000000);
- }
- else if( p_sys->i_time > 0 )
- {
- i_percent = (int)( 100.0 * ControlGetPosition( p_demux ) *
- (double)i64 / (double)p_sys->i_time );
- }
- return Seek( p_demux, i64, i_percent );
- }
- case DEMUX_GET_LENGTH:
- pi64 = (int64_t*)va_arg( args, int64_t * );
- *pi64 = p_sys->i_length * (mtime_t)1000000;
- return VLC_SUCCESS;
- case DEMUX_GET_FPS:
- pf = (double*)va_arg( args, double * );
- *pf = 0.0;
- for( i = 0; i < (int)p_sys->i_track; i++ )
- {
- avi_track_t *tk = p_sys->track[i];
- if( tk->i_cat == VIDEO_ES && tk->i_scale > 0)
- {
- *pf = (float)tk->i_rate / (float)tk->i_scale;
- break;
- }
- }
- return VLC_SUCCESS;
- case DEMUX_GET_META:
- pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
- *pp_meta = vlc_meta_Duplicate( p_sys->meta );
- return VLC_SUCCESS;
- default:
- return VLC_EGENERIC;
- }
- }
- /*****************************************************************************
- * Function to convert pts to chunk or byte
- *****************************************************************************/
- static mtime_t AVI_PTSToChunk( avi_track_t *tk, mtime_t i_pts )
- {
- return (mtime_t)((int64_t)i_pts *
- (int64_t)tk->i_rate /
- (int64_t)tk->i_scale /
- (int64_t)1000000 );
- }
- static mtime_t AVI_PTSToByte( avi_track_t *tk, mtime_t i_pts )
- {
- return (mtime_t)((int64_t)i_pts *
- (int64_t)tk->i_rate /
- (int64_t)tk->i_scale /
- (int64_t)1000000 *
- (int64_t)tk->i_samplesize );
- }
- static mtime_t AVI_GetDPTS( avi_track_t *tk, int64_t i_count )
- {
- mtime_t i_dpts;
- i_dpts = (mtime_t)( (int64_t)1000000 *
- (int64_t)i_count *
- (int64_t)tk->i_scale /
- (int64_t)tk->i_rate );
- if( tk->i_samplesize )
- {
- return i_dpts / tk->i_samplesize;
- }
- return i_dpts;
- }
- static mtime_t AVI_GetPTS( avi_track_t *tk )
- {
- if( tk->i_samplesize )
- {
- int64_t i_count = 0;
- /* we need a valid entry we will emulate one */
- if( tk->i_idxposc == tk->i_idxnb )
- {
- if( tk->i_idxposc )
- {
- /* use the last entry */
- i_count = tk->p_index[tk->i_idxnb - 1].i_lengthtotal
- + tk->p_index[tk->i_idxnb - 1].i_length;
- }
- }
- else
- {
- i_count = tk->p_index[tk->i_idxposc].i_lengthtotal;
- }
- return AVI_GetDPTS( tk, i_count + tk->i_idxposb );
- }
- else
- {
- if( tk->i_cat == AUDIO_ES )
- {
- return AVI_GetDPTS( tk, tk->i_blockno );
- }
- else
- {
- return AVI_GetDPTS( tk, tk->i_idxposc );
- }
- }
- }
- static int AVI_StreamChunkFind( demux_t *p_demux, unsigned int i_stream )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_packet_t avi_pk;
- int i_loop_count = 0;
- /* find first chunk of i_stream that isn't in index */
- if( p_sys->i_movi_lastchunk_pos >= p_sys->i_movi_begin + 12 )
- {
- stream_Seek( p_demux->s, p_sys->i_movi_lastchunk_pos );
- if( AVI_PacketNext( p_demux ) )
- {
- return VLC_EGENERIC;
- }
- }
- else
- {
- stream_Seek( p_demux->s, p_sys->i_movi_begin + 12 );
- }
- for( ;; )
- {
- if( p_demux->b_die ) return VLC_EGENERIC;
- if( AVI_PacketGetHeader( p_demux, &avi_pk ) )
- {
- msg_Warn( p_demux, "cannot get packet header" );
- return VLC_EGENERIC;
- }
- if( avi_pk.i_stream >= p_sys->i_track ||
- ( avi_pk.i_cat != AUDIO_ES && avi_pk.i_cat != VIDEO_ES ) )
- {
- if( AVI_PacketNext( p_demux ) )
- {
- return VLC_EGENERIC;
- }
- /* Prevents from eating all the CPU with broken files.
- * This value should be low enough so that it doesn't
- * affect the reading speed too much. */
- if( !(++i_loop_count % 1024) )
- {
- if( p_demux->b_die ) return VLC_EGENERIC;
- msleep( 10000 );
- if( !(i_loop_count % (1024 * 10)) )
- msg_Warn( p_demux, "don't seem to find any data..." );
- }
- }
- else
- {
- /* add this chunk to the index */
- avi_entry_t index;
- index.i_id = avi_pk.i_fourcc;
- index.i_flags =
- AVI_GetKeyFlag(p_sys->track[avi_pk.i_stream]->i_codec,
- avi_pk.i_peek);
- index.i_pos = avi_pk.i_pos;
- index.i_length = avi_pk.i_size;
- AVI_IndexAddEntry( p_sys, avi_pk.i_stream, &index );
- if( avi_pk.i_stream == i_stream )
- {
- return VLC_SUCCESS;
- }
- if( AVI_PacketNext( p_demux ) )
- {
- return VLC_EGENERIC;
- }
- }
- }
- }
- /* be sure that i_ck will be a valid index entry */
- static int AVI_StreamChunkSet( demux_t *p_demux, unsigned int i_stream,
- unsigned int i_ck )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_track_t *p_stream = p_sys->track[i_stream];
- p_stream->i_idxposc = i_ck;
- p_stream->i_idxposb = 0;
- if( i_ck >= p_stream->i_idxnb )
- {
- p_stream->i_idxposc = p_stream->i_idxnb - 1;
- do
- {
- p_stream->i_idxposc++;
- if( AVI_StreamChunkFind( p_demux, i_stream ) )
- {
- return VLC_EGENERIC;
- }
- } while( p_stream->i_idxposc < i_ck );
- }
- return VLC_SUCCESS;
- }
- /* XXX FIXME up to now, we assume that all chunk are one after one */
- static int AVI_StreamBytesSet( demux_t *p_demux,
- unsigned int i_stream,
- off_t i_byte )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_track_t *p_stream = p_sys->track[i_stream];
- if( ( p_stream->i_idxnb > 0 )
- &&( i_byte < p_stream->p_index[p_stream->i_idxnb - 1].i_lengthtotal +
- p_stream->p_index[p_stream->i_idxnb - 1].i_length ) )
- {
- /* index is valid to find the ck */
- /* uses dichototmie to be fast enougth */
- int i_idxposc = __MIN( p_stream->i_idxposc, p_stream->i_idxnb - 1 );
- int i_idxmax = p_stream->i_idxnb;
- int i_idxmin = 0;
- for( ;; )
- {
- if( p_stream->p_index[i_idxposc].i_lengthtotal > i_byte )
- {
- i_idxmax = i_idxposc ;
- i_idxposc = ( i_idxmin + i_idxposc ) / 2 ;
- }
- else
- {
- if( p_stream->p_index[i_idxposc].i_lengthtotal +
- p_stream->p_index[i_idxposc].i_length <= i_byte)
- {
- i_idxmin = i_idxposc ;
- i_idxposc = (i_idxmax + i_idxposc ) / 2 ;
- }
- else
- {
- p_stream->i_idxposc = i_idxposc;
- p_stream->i_idxposb = i_byte -
- p_stream->p_index[i_idxposc].i_lengthtotal;
- return VLC_SUCCESS;
- }
- }
- }
- }
- else
- {
- p_stream->i_idxposc = p_stream->i_idxnb - 1;
- p_stream->i_idxposb = 0;
- do
- {
- p_stream->i_idxposc++;
- if( AVI_StreamChunkFind( p_demux, i_stream ) )
- {
- return VLC_EGENERIC;
- }
- } while( p_stream->p_index[p_stream->i_idxposc].i_lengthtotal +
- p_stream->p_index[p_stream->i_idxposc].i_length <= i_byte );
- p_stream->i_idxposb = i_byte -
- p_stream->p_index[p_stream->i_idxposc].i_lengthtotal;
- return VLC_SUCCESS;
- }
- }
- static int AVI_TrackSeek( demux_t *p_demux,
- int i_stream,
- mtime_t i_date )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_track_t *tk = p_sys->track[i_stream];
- #define p_stream p_sys->track[i_stream]
- mtime_t i_oldpts;
- i_oldpts = AVI_GetPTS( p_stream );
- if( !p_stream->i_samplesize )
- {
- if( AVI_StreamChunkSet( p_demux,
- i_stream,
- AVI_PTSToChunk( p_stream, i_date ) ) )
- {
- return VLC_EGENERIC;
- }
- if( p_stream->i_cat == AUDIO_ES )
- {
- unsigned int i;
- tk->i_blockno = 0;
- for( i = 0; i < tk->i_idxposc; i++ )
- {
- if( tk->i_blocksize > 0 )
- {
- tk->i_blockno += ( tk->p_index[i].i_length + tk->i_blocksize - 1 ) / tk->i_blocksize;
- }
- else
- {
- tk->i_blockno++;
- }
- }
- }
- msg_Dbg( p_demux,
- "old:"I64Fd" %s new "I64Fd,
- i_oldpts,
- i_oldpts > i_date ? ">" : "<",
- i_date );
- if( p_stream->i_cat == VIDEO_ES )
- {
- /* search key frame */
- if( i_date < i_oldpts )
- {
- while( p_stream->i_idxposc > 0 &&
- !( p_stream->p_index[p_stream->i_idxposc].i_flags &
- AVIIF_KEYFRAME ) )
- {
- if( AVI_StreamChunkSet( p_demux,
- i_stream,
- p_stream->i_idxposc - 1 ) )
- {
- return VLC_EGENERIC;
- }
- }
- }
- else
- {
- while( p_stream->i_idxposc < p_stream->i_idxnb &&
- !( p_stream->p_index[p_stream->i_idxposc].i_flags &
- AVIIF_KEYFRAME ) )
- {
- if( AVI_StreamChunkSet( p_demux,
- i_stream,
- p_stream->i_idxposc + 1 ) )
- {
- return VLC_EGENERIC;
- }
- }
- }
- }
- }
- else
- {
- if( AVI_StreamBytesSet( p_demux,
- i_stream,
- AVI_PTSToByte( p_stream, i_date ) ) )
- {
- return VLC_EGENERIC;
- }
- }
- return VLC_SUCCESS;
- #undef p_stream
- }
- /****************************************************************************
- * Return VLC_TRUE if it's a key frame
- ****************************************************************************/
- static int AVI_GetKeyFlag( vlc_fourcc_t i_fourcc, uint8_t *p_byte )
- {
- switch( i_fourcc )
- {
- case FOURCC_DIV1:
- /* we have:
- * startcode: 0x00000100 32bits
- * framenumber ? 5bits
- * piture type 0(I),1(P) 2bits
- */
- if( GetDWBE( p_byte ) != 0x00000100 )
- {
- /* it's not an msmpegv1 stream, strange...*/
- return AVIIF_KEYFRAME;
- }
- return p_byte[4] & 0x06 ? 0 : AVIIF_KEYFRAME;
- case FOURCC_DIV2:
- case FOURCC_DIV3: /* wmv1 also */
- /* we have
- * picture type 0(I),1(P) 2bits
- */
- return p_byte[0] & 0xC0 ? 0 : AVIIF_KEYFRAME;
- case FOURCC_mp4v:
- /* we should find first occurrence of 0x000001b6 (32bits)
- * startcode: 0x000001b6 32bits
- * piture type 0(I),1(P) 2bits
- */
- if( GetDWBE( p_byte ) != 0x000001b6 )
- {
- /* not true , need to find the first VOP header */
- return AVIIF_KEYFRAME;
- }
- return p_byte[4] & 0xC0 ? 0 : AVIIF_KEYFRAME;
- default:
- /* I can't do it, so say yes */
- return AVIIF_KEYFRAME;
- }
- }
- vlc_fourcc_t AVI_FourccGetCodec( unsigned int i_cat, vlc_fourcc_t i_codec )
- {
- switch( i_cat )
- {
- case AUDIO_ES:
- wf_tag_to_fourcc( i_codec, &i_codec, NULL );
- return i_codec;
- case VIDEO_ES:
- /* XXX DIV1 <- msmpeg4v1, DIV2 <- msmpeg4v2, DIV3 <- msmpeg4v3, mp4v for mpeg4 */
- switch( i_codec )
- {
- case FOURCC_1:
- return VLC_FOURCC('m','r','l','e');
- case FOURCC_DIV1:
- case FOURCC_div1:
- case FOURCC_MPG4:
- case FOURCC_mpg4:
- return FOURCC_DIV1;
- case FOURCC_DIV2:
- case FOURCC_div2:
- case FOURCC_MP42:
- case FOURCC_mp42:
- case FOURCC_MPG3:
- case FOURCC_mpg3:
- return FOURCC_DIV2;
- case FOURCC_div3:
- case FOURCC_MP43:
- case FOURCC_mp43:
- case FOURCC_DIV3:
- case FOURCC_DIV4:
- case FOURCC_div4:
- case FOURCC_DIV5:
- case FOURCC_div5:
- case FOURCC_DIV6:
- case FOURCC_div6:
- case FOURCC_AP41:
- case FOURCC_3IV1:
- case FOURCC_3iv1:
- case FOURCC_3IVD:
- case FOURCC_3ivd:
- case FOURCC_3VID:
- case FOURCC_3vid:
- return FOURCC_DIV3;
- case FOURCC_DIVX:
- case FOURCC_divx:
- case FOURCC_MP4S:
- case FOURCC_mp4s:
- case FOURCC_M4S2:
- case FOURCC_m4s2:
- case FOURCC_xvid:
- case FOURCC_XVID:
- case FOURCC_XviD:
- case FOURCC_DX50:
- case FOURCC_dx50:
- case FOURCC_mp4v:
- case FOURCC_4:
- case FOURCC_3IV2:
- case FOURCC_3iv2:
- return FOURCC_mp4v;
- }
- default:
- return VLC_FOURCC( 'u', 'n', 'd', 'f' );
- }
- }
- /****************************************************************************
- *
- ****************************************************************************/
- static void AVI_ParseStreamHeader( vlc_fourcc_t i_id,
- int *pi_number, int *pi_type )
- {
- #define SET_PTR( p, v ) if( p ) *(p) = (v);
- int c1, c2;
- c1 = ((uint8_t *)&i_id)[0];
- c2 = ((uint8_t *)&i_id)[1];
- if( c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' )
- {
- SET_PTR( pi_number, 100 ); /* > max stream number */
- SET_PTR( pi_type, UNKNOWN_ES );
- }
- else
- {
- SET_PTR( pi_number, (c1 - '0') * 10 + (c2 - '0' ) );
- switch( VLC_TWOCC( ((uint8_t *)&i_id)[2], ((uint8_t *)&i_id)[3] ) )
- {
- case AVITWOCC_wb:
- SET_PTR( pi_type, AUDIO_ES );
- break;
- case AVITWOCC_dc:
- case AVITWOCC_db:
- SET_PTR( pi_type, VIDEO_ES );
- break;
- default:
- SET_PTR( pi_type, UNKNOWN_ES );
- break;
- }
- }
- #undef SET_PTR
- }
- /****************************************************************************
- *
- ****************************************************************************/
- static int AVI_PacketGetHeader( demux_t *p_demux, avi_packet_t *p_pk )
- {
- uint8_t *p_peek;
- if( stream_Peek( p_demux->s, &p_peek, 16 ) < 16 )
- {
- return VLC_EGENERIC;
- }
- p_pk->i_fourcc = VLC_FOURCC( p_peek[0], p_peek[1], p_peek[2], p_peek[3] );
- p_pk->i_size = GetDWLE( p_peek + 4 );
- p_pk->i_pos = stream_Tell( p_demux->s );
- if( p_pk->i_fourcc == AVIFOURCC_LIST || p_pk->i_fourcc == AVIFOURCC_RIFF )
- {
- p_pk->i_type = VLC_FOURCC( p_peek[8], p_peek[9],
- p_peek[10], p_peek[11] );
- }
- else
- {
- p_pk->i_type = 0;
- }
- memcpy( p_pk->i_peek, p_peek + 8, 8 );
- AVI_ParseStreamHeader( p_pk->i_fourcc, &p_pk->i_stream, &p_pk->i_cat );
- return VLC_SUCCESS;
- }
- static int AVI_PacketNext( demux_t *p_demux )
- {
- avi_packet_t avi_ck;
- int i_skip = 0;
- if( AVI_PacketGetHeader( p_demux, &avi_ck ) )
- {
- return VLC_EGENERIC;
- }
- if( avi_ck.i_fourcc == AVIFOURCC_LIST &&
- ( avi_ck.i_type == AVIFOURCC_rec || avi_ck.i_type == AVIFOURCC_movi ) )
- {
- i_skip = 12;
- }
- else if( avi_ck.i_fourcc == AVIFOURCC_RIFF &&
- avi_ck.i_type == AVIFOURCC_AVIX )
- {
- i_skip = 24;
- }
- else
- {
- i_skip = __EVEN( avi_ck.i_size ) + 8;
- }
- if( stream_Read( p_demux->s, NULL, i_skip ) != i_skip )
- {
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- static int AVI_PacketRead( demux_t *p_demux,
- avi_packet_t *p_pk,
- block_t **pp_frame )
- {
- size_t i_size;
- i_size = __EVEN( p_pk->i_size + 8 );
- if( ( *pp_frame = stream_Block( p_demux->s, i_size ) ) == NULL )
- {
- return VLC_EGENERIC;
- }
- (*pp_frame)->p_buffer += 8;
- (*pp_frame)->i_buffer -= 8;
- if( i_size != p_pk->i_size + 8 )
- {
- (*pp_frame)->i_buffer--;
- }
- return VLC_SUCCESS;
- }
- static int AVI_PacketSearch( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_packet_t avi_pk;
- int i_count = 0;
- for( ;; )
- {
- if( stream_Read( p_demux->s, NULL, 1 ) != 1 )
- {
- return VLC_EGENERIC;
- }
- AVI_PacketGetHeader( p_demux, &avi_pk );
- if( avi_pk.i_stream < p_sys->i_track &&
- ( avi_pk.i_cat == AUDIO_ES || avi_pk.i_cat == VIDEO_ES ) )
- {
- return VLC_SUCCESS;
- }
- switch( avi_pk.i_fourcc )
- {
- case AVIFOURCC_JUNK:
- case AVIFOURCC_LIST:
- case AVIFOURCC_RIFF:
- case AVIFOURCC_idx1:
- return VLC_SUCCESS;
- }
- /* Prevents from eating all the CPU with broken files.
- * This value should be low enough so that it doesn't affect the
- * reading speed too much (not that we care much anyway because
- * this code is called only on broken files). */
- if( !(++i_count % 1024) )
- {
- if( p_demux->b_die ) return VLC_EGENERIC;
- msleep( 10000 );
- if( !(i_count % (1024 * 10)) )
- msg_Warn( p_demux, "trying to resync..." );
- }
- }
- }
- /****************************************************************************
- * Index stuff.
- ****************************************************************************/
- static void AVI_IndexAddEntry( demux_sys_t *p_sys,
- int i_stream,
- avi_entry_t *p_index)
- {
- avi_track_t *tk = p_sys->track[i_stream];
- /* Update i_movi_lastchunk_pos */
- if( p_sys->i_movi_lastchunk_pos < p_index->i_pos )
- {
- p_sys->i_movi_lastchunk_pos = p_index->i_pos;
- }
- /* add the entry */
- if( tk->i_idxnb >= tk->i_idxmax )
- {
- tk->i_idxmax += 16384;
- tk->p_index = realloc( tk->p_index,
- tk->i_idxmax * sizeof( avi_entry_t ) );
- if( tk->p_index == NULL )
- {
- return;
- }
- }
- /* calculate cumulate length */
- if( tk->i_idxnb > 0 )
- {
- p_index->i_lengthtotal =
- tk->p_index[tk->i_idxnb - 1].i_length +
- tk->p_index[tk->i_idxnb - 1].i_lengthtotal;
- }
- else
- {
- p_index->i_lengthtotal = 0;
- }
- tk->p_index[tk->i_idxnb++] = *p_index;
- }
- static int AVI_IndexLoad_idx1( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_chunk_list_t *p_riff;
- avi_chunk_list_t *p_movi;
- avi_chunk_idx1_t *p_idx1;
- unsigned int i_stream;
- unsigned int i_index;
- off_t i_offset;
- unsigned int i;
- vlc_bool_t b_keyset[100];
- p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
- p_idx1 = AVI_ChunkFind( p_riff, AVIFOURCC_idx1, 0);
- p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
- if( !p_idx1 )
- {
- msg_Warn( p_demux, "cannot find idx1 chunk, no index defined" );
- return VLC_EGENERIC;
- }
- /* *** calculate offset *** */
- /* Well, avi is __SHIT__ so test more than one entry
- * (needed for some avi files) */
- i_offset = 0;
- for( i = 0; i < __MIN( p_idx1->i_entry_count, 10 ); i++ )
- {
- if( p_idx1->entry[i].i_pos < p_movi->i_chunk_pos )
- {
- i_offset = p_movi->i_chunk_pos + 8;
- break;
- }
- }
- /* Reset b_keyset */
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- b_keyset[i_stream] = VLC_FALSE;
- for( i_index = 0; i_index < p_idx1->i_entry_count; i_index++ )
- {
- unsigned int i_cat;
- AVI_ParseStreamHeader( p_idx1->entry[i_index].i_fourcc,
- &i_stream,
- &i_cat );
- if( i_stream < p_sys->i_track &&
- i_cat == p_sys->track[i_stream]->i_cat )
- {
- avi_entry_t index;
- index.i_id = p_idx1->entry[i_index].i_fourcc;
- index.i_flags =
- p_idx1->entry[i_index].i_flags&(~AVIIF_FIXKEYFRAME);
- index.i_pos = p_idx1->entry[i_index].i_pos + i_offset;
- index.i_length = p_idx1->entry[i_index].i_length;
- AVI_IndexAddEntry( p_sys, i_stream, &index );
- if( index.i_flags&AVIIF_KEYFRAME )
- b_keyset[i_stream] = VLC_TRUE;
- }
- }
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- if( !b_keyset[i_stream] )
- {
- avi_track_t *tk = p_sys->track[i_stream];
- msg_Dbg( p_demux, "no key frame set for track %d", i_stream );
- for( i_index = 0; i_index < tk->i_idxnb; i_index++ )
- tk->p_index[i_index].i_flags |= AVIIF_KEYFRAME;
- }
- }
- return VLC_SUCCESS;
- }
- static void __Parse_indx( demux_t *p_demux,
- int i_stream,
- avi_chunk_indx_t *p_indx )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_entry_t index;
- int32_t i;
- msg_Dbg( p_demux, "loading subindex(0x%x) %d entries", p_indx->i_indextype, p_indx->i_entriesinuse );
- if( p_indx->i_indexsubtype == 0 )
- {
- for( i = 0; i < p_indx->i_entriesinuse; i++ )
- {
- index.i_id = p_indx->i_id;
- index.i_flags = p_indx->idx.std[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
- index.i_pos = p_indx->i_baseoffset + p_indx->idx.std[i].i_offset - 8;
- index.i_length = p_indx->idx.std[i].i_size&0x7fffffff;
- AVI_IndexAddEntry( p_sys, i_stream, &index );
- }
- }
- else if( p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
- {
- for( i = 0; i < p_indx->i_entriesinuse; i++ )
- {
- index.i_id = p_indx->i_id;
- index.i_flags = p_indx->idx.field[i].i_size & 0x80000000 ? 0 : AVIIF_KEYFRAME;
- index.i_pos = p_indx->i_baseoffset + p_indx->idx.field[i].i_offset - 8;
- index.i_length = p_indx->idx.field[i].i_size;
- AVI_IndexAddEntry( p_sys, i_stream, &index );
- }
- }
- else
- {
- msg_Warn( p_demux, "unknown subtype index(0x%x)", p_indx->i_indexsubtype );
- }
- }
- static void AVI_IndexLoad_indx( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- unsigned int i_stream;
- int32_t i;
- avi_chunk_list_t *p_riff;
- avi_chunk_list_t *p_hdrl;
- p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
- p_hdrl = AVI_ChunkFind( p_riff, AVIFOURCC_hdrl, 0 );
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- avi_chunk_list_t *p_strl;
- avi_chunk_indx_t *p_indx;
- #define p_stream p_sys->track[i_stream]
- p_strl = AVI_ChunkFind( p_hdrl, AVIFOURCC_strl, i_stream );
- p_indx = AVI_ChunkFind( p_strl, AVIFOURCC_indx, 0 );
- if( !p_indx )
- {
- msg_Warn( p_demux, "cannot find indx (misdetect/broken OpenDML file?)" );
- continue;
- }
- if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS )
- {
- __Parse_indx( p_demux, i_stream, p_indx );
- }
- else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
- {
- avi_chunk_t ck_sub;
- for( i = 0; i < p_indx->i_entriesinuse; i++ )
- {
- if( stream_Seek( p_demux->s, p_indx->idx.super[i].i_offset )||
- AVI_ChunkRead( p_demux->s, &ck_sub, NULL ) )
- {
- break;
- }
- __Parse_indx( p_demux, i_stream, &ck_sub.indx );
- }
- }
- else
- {
- msg_Warn( p_demux, "unknown type index(0x%x)", p_indx->i_indextype );
- }
- #undef p_stream
- }
- }
- static void AVI_IndexLoad( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- unsigned int i_stream;
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- p_sys->track[i_stream]->i_idxnb = 0;
- p_sys->track[i_stream]->i_idxmax = 0;
- p_sys->track[i_stream]->p_index = NULL;
- }
- if( p_sys->b_odml )
- {
- AVI_IndexLoad_indx( p_demux );
- }
- else if( AVI_IndexLoad_idx1( p_demux ) )
- {
- /* try indx if idx1 failed as some "normal" file have indx too */
- AVI_IndexLoad_indx( p_demux );
- }
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- msg_Dbg( p_demux, "stream[%d] created %d index entries",
- i_stream, p_sys->track[i_stream]->i_idxnb );
- }
- }
- static void AVI_IndexCreate( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- avi_chunk_list_t *p_riff;
- avi_chunk_list_t *p_movi;
- unsigned int i_stream;
- off_t i_movi_end;
- p_riff = AVI_ChunkFind( &p_sys->ck_root, AVIFOURCC_RIFF, 0);
- p_movi = AVI_ChunkFind( p_riff, AVIFOURCC_movi, 0);
- if( !p_movi )
- {
- msg_Err( p_demux, "cannot find p_movi" );
- return;
- }
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- p_sys->track[i_stream]->i_idxnb = 0;
- p_sys->track[i_stream]->i_idxmax = 0;
- p_sys->track[i_stream]->p_index = NULL;
- }
- i_movi_end = __MIN( (off_t)(p_movi->i_chunk_pos + p_movi->i_chunk_size),
- stream_Size( p_demux->s ) );
- stream_Seek( p_demux->s, p_movi->i_chunk_pos + 12 );
- msg_Warn( p_demux, "creating index from LIST-movi, will take time !" );
- for( ;; )
- {
- avi_packet_t pk;
- if( p_demux->b_die )
- {
- return;
- }
- if( AVI_PacketGetHeader( p_demux, &pk ) )
- {
- break;
- }
- if( pk.i_stream < p_sys->i_track &&
- pk.i_cat == p_sys->track[pk.i_stream]->i_cat )
- {
- avi_entry_t index;
- index.i_id = pk.i_fourcc;
- index.i_flags =
- AVI_GetKeyFlag(p_sys->track[pk.i_stream]->i_codec, pk.i_peek);
- index.i_pos = pk.i_pos;
- index.i_length = pk.i_size;
- AVI_IndexAddEntry( p_sys, pk.i_stream, &index );
- }
- else
- {
- switch( pk.i_fourcc )
- {
- case AVIFOURCC_idx1:
- if( p_sys->b_odml )
- {
- avi_chunk_list_t *p_sysx;
- p_sysx = AVI_ChunkFind( &p_sys->ck_root,
- AVIFOURCC_RIFF, 1 );
- msg_Dbg( p_demux, "looking for new RIFF chunk" );
- if( stream_Seek( p_demux->s, p_sysx->i_chunk_pos + 24))
- {
- goto print_stat;
- }
- break;
- }
- goto print_stat;
- case AVIFOURCC_RIFF:
- msg_Dbg( p_demux, "new RIFF chunk found" );
- case AVIFOURCC_rec:
- case AVIFOURCC_JUNK:
- break;
- default:
- msg_Warn( p_demux, "need resync, probably broken avi" );
- if( AVI_PacketSearch( p_demux ) )
- {
- msg_Warn( p_demux, "lost sync, abord index creation" );
- goto print_stat;
- }
- }
- }
- if( ( !p_sys->b_odml && pk.i_pos + pk.i_size >= i_movi_end ) ||
- AVI_PacketNext( p_demux ) )
- {
- break;
- }
- }
- print_stat:
- for( i_stream = 0; i_stream < p_sys->i_track; i_stream++ )
- {
- msg_Dbg( p_demux,
- "stream[%d] creating %d index entries",
- i_stream,
- p_sys->track[i_stream]->i_idxnb );
- }
- }
- /*****************************************************************************
- * Stream management
- *****************************************************************************/
- static int AVI_TrackStopFinishedStreams( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- unsigned int i;
- int b_end = VLC_TRUE;
- for( i = 0; i < p_sys->i_track; i++ )
- {
- avi_track_t *tk = p_sys->track[i];
- if( tk->i_idxposc >= tk->i_idxnb )
- {
- tk->b_activated = VLC_FALSE;
- es_out_Control( p_demux->out, ES_OUT_SET_ES_STATE, tk->p_es, VLC_FALSE );
- }
- else
- {
- b_end = VLC_FALSE;
- }
- }
- return( b_end );
- }
- /****************************************************************************
- * AVI_MovieGetLength give max streams length in second
- ****************************************************************************/
- static mtime_t AVI_MovieGetLength( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- mtime_t i_maxlength = 0;
- unsigned int i;
- for( i = 0; i < p_sys->i_track; i++ )
- {
- avi_track_t *tk = p_sys->track[i];
- mtime_t i_length;
- /* fix length for each stream */
- if( tk->i_idxnb < 1 || !tk->p_index )
- {
- continue;
- }
- if( tk->i_samplesize )
- {
- i_length = AVI_GetDPTS( tk,
- tk->p_index[tk->i_idxnb-1].i_lengthtotal +
- tk->p_index[tk->i_idxnb-1].i_length );
- }
- else
- {
- i_length = AVI_GetDPTS( tk, tk->i_idxnb );
- }
- i_length /= (mtime_t)1000000; /* in seconds */
- msg_Dbg( p_demux,
- "stream[%d] length:"I64Fd" (based on index)",
- i,
- i_length );
- i_maxlength = __MAX( i_maxlength, i_length );
- }
- return i_maxlength;
- }