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/*****************************************************************************
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*****************************************************************************
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* Copyright (C) 2001 VideoLAN
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* $Id: libavi.c 6961 2004-03-05 17:34:23Z sam $
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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#include <stdlib.h> /* malloc(), free() */
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#include <vlc/input.h>
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#include "codecs.h" /* BITMAPINFOHEADER */
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if( p ) {free( p ); p = NULL; }
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#define __EVEN( x ) ( (x)&0x01 ? (x)+1 : (x) )
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static vlc_fourcc_t GetFOURCC( byte_t *p_buff )
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return VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] );
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#define AVI_ChunkFree( a, b ) _AVI_ChunkFree( (a), (avi_chunk_t*)(b) )
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void _AVI_ChunkFree( stream_t *, avi_chunk_t *p_chk );
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/****************************************************************************
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* Basics functions to manipulates chunks
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****************************************************************************/
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static int AVI_ChunkReadCommon( stream_t *s, avi_chunk_t *p_chk )
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memset( p_chk, 0, sizeof( avi_chunk_t ) );
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if( ( i_peek = stream_Peek( s, &p_peek, 8 ) ) < 8 )
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p_chk->common.i_chunk_fourcc = GetFOURCC( p_peek );
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p_chk->common.i_chunk_size = GetDWLE( p_peek + 4 );
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p_chk->common.i_chunk_pos = stream_Tell( s );
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p_chk->common.p_father = NULL;
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p_chk->common.p_next = NULL;
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p_chk->common.p_first = NULL;
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p_chk->common.p_next = NULL;
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msg_Dbg( (vlc_object_t*)s,
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"found Chunk fourcc:%8.8x (%4.4s) size:"I64Fd" pos:"I64Fd,
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p_chk->common.i_chunk_fourcc,
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(char*)&p_chk->common.i_chunk_fourcc,
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p_chk->common.i_chunk_size,
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p_chk->common.i_chunk_pos );
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static int AVI_NextChunk( stream_t *s, avi_chunk_t *p_chk )
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if( AVI_ChunkReadCommon( s, &chk ) )
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if( p_chk->common.p_father )
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if( p_chk->common.p_father->common.i_chunk_pos +
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__EVEN( p_chk->common.p_father->common.i_chunk_size ) + 8 <
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p_chk->common.i_chunk_pos +
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__EVEN( p_chk->common.i_chunk_size ) + 8 )
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return stream_Seek( s, p_chk->common.i_chunk_pos +
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__EVEN( p_chk->common.i_chunk_size ) + 8 );
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/****************************************************************************
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* Functions to read chunks
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****************************************************************************/
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static int AVI_ChunkRead_list( stream_t *s, avi_chunk_t *p_container )
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vlc_bool_t b_seekable;
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if( p_container->common.i_chunk_size > 0 && p_container->common.i_chunk_size < 8 )
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msg_Warn( (vlc_object_t*)s, "empty list chunk" );
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if( stream_Peek( s, &p_peek, 12 ) < 12 )
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msg_Warn( (vlc_object_t*)s, "cannot peek while reading list chunk" );
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stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
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p_container->list.i_type = GetFOURCC( p_peek + 8 );
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if( p_container->common.i_chunk_fourcc == AVIFOURCC_LIST &&
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p_container->list.i_type == AVIFOURCC_movi )
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msg_Dbg( (vlc_object_t*)s, "skipping movi chunk" );
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return AVI_NextChunk( s, p_container );
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return VLC_SUCCESS; /* point at begining of LIST-movi */
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if( stream_Read( s, NULL, 12 ) != 12 )
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msg_Warn( (vlc_object_t*)s, "cannot enter chunk" );
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msg_Dbg( (vlc_object_t*)s,
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"found LIST chunk: \'%4.4s\'",
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(char*)&p_container->list.i_type );
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msg_Dbg( (vlc_object_t*)s, "<list \'%4.4s\'>", (char*)&p_container->list.i_type );
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p_chk = malloc( sizeof( avi_chunk_t ) );
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memset( p_chk, 0, sizeof( avi_chunk_t ) );
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if( !p_container->common.p_first )
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p_container->common.p_first = p_chk;
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p_container->common.p_last->common.p_next = p_chk;
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p_container->common.p_last = p_chk;
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if( AVI_ChunkRead( s, p_chk, p_container ) )
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if( p_chk->common.p_father->common.i_chunk_size > 0 &&
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( stream_Tell( s ) >=
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(off_t)p_chk->common.p_father->common.i_chunk_pos +
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(off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
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/* If we can't seek then stop when we 've found LIST-movi */
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if( p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST &&
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p_chk->list.i_type == AVIFOURCC_movi &&
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( !b_seekable || p_chk->common.i_chunk_size == 0 ) )
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msg_Dbg( (vlc_object_t*)s, "</list \'%4.4s\'>", (char*)&p_container->list.i_type );
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#define AVI_READCHUNK_ENTER \
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int64_t i_read = __EVEN(p_chk->common.i_chunk_size ) + 8; \
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uint8_t *p_read, *p_buff; \
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if( !( p_read = p_buff = malloc(i_read ) ) ) \
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return VLC_EGENERIC; \
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i_read = stream_Read( s, p_read, i_read ); \
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if( i_read < (int64_t)__EVEN(p_chk->common.i_chunk_size ) + 8 ) \
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return VLC_EGENERIC; \
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#define AVI_READCHUNK_EXIT( code ) \
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msg_Warn( (vlc_object_t*)s, "not enough data" ); \
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#define AVI_READ1BYTE( i_byte ) \
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#define AVI_READ2BYTES( i_word ) \
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i_word = GetWLE( p_read ); \
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#define AVI_READ4BYTES( i_dword ) \
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i_dword = GetDWLE( p_read ); \
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#define AVI_READ8BYTES( i_dword ) \
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i_dword = GetQWLE( p_read ); \
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#define AVI_READFOURCC( i_dword ) \
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i_dword = GetFOURCC( p_read ); \
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static int AVI_ChunkRead_avih( stream_t *s, avi_chunk_t *p_chk )
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AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
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AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
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AVI_READ4BYTES( p_chk->avih.i_reserved1 );
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AVI_READ4BYTES( p_chk->avih.i_flags );
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AVI_READ4BYTES( p_chk->avih.i_totalframes );
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AVI_READ4BYTES( p_chk->avih.i_initialframes );
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AVI_READ4BYTES( p_chk->avih.i_streams );
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AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
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AVI_READ4BYTES( p_chk->avih.i_width );
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AVI_READ4BYTES( p_chk->avih.i_height );
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AVI_READ4BYTES( p_chk->avih.i_scale );
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AVI_READ4BYTES( p_chk->avih.i_rate );
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AVI_READ4BYTES( p_chk->avih.i_start );
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AVI_READ4BYTES( p_chk->avih.i_length );
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msg_Dbg( (vlc_object_t*)s,
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"avih: streams:%d flags:%s%s%s%s %dx%d",
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p_chk->avih.i_streams,
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p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
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p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
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p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
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p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
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p_chk->avih.i_width, p_chk->avih.i_height );
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AVI_READCHUNK_EXIT( VLC_SUCCESS );
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static int AVI_ChunkRead_strh( stream_t *s, avi_chunk_t *p_chk )
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AVI_READFOURCC( p_chk->strh.i_type );
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AVI_READFOURCC( p_chk->strh.i_handler );
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AVI_READ4BYTES( p_chk->strh.i_flags );
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AVI_READ4BYTES( p_chk->strh.i_reserved1 );
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AVI_READ4BYTES( p_chk->strh.i_initialframes );
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AVI_READ4BYTES( p_chk->strh.i_scale );
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AVI_READ4BYTES( p_chk->strh.i_rate );
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AVI_READ4BYTES( p_chk->strh.i_start );
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AVI_READ4BYTES( p_chk->strh.i_length );
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AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
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AVI_READ4BYTES( p_chk->strh.i_quality );
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AVI_READ4BYTES( p_chk->strh.i_samplesize );
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msg_Dbg( (vlc_object_t*)s,
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"strh: type:%4.4s handler:0x%8.8x samplesize:%d %.2ffps",
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(char*)&p_chk->strh.i_type,
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p_chk->strh.i_handler,
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p_chk->strh.i_samplesize,
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( p_chk->strh.i_scale ?
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(float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
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AVI_READCHUNK_EXIT( VLC_SUCCESS );
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static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
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if( p_chk->common.p_father == NULL )
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msg_Err( (vlc_object_t*)s, "malformed avi file" );
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AVI_READCHUNK_EXIT( VLC_EGENERIC );
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if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
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msg_Err( (vlc_object_t*)s, "malformed avi file" );
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AVI_READCHUNK_EXIT( VLC_EGENERIC );
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switch( p_strh->strh.i_type )
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case( AVIFOURCC_auds ):
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p_chk->strf.auds.i_cat = AUDIO_ES;
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p_chk->strf.auds.p_wf = malloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
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AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
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AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
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AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
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AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
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AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
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AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
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if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
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&& p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
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AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
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/* prevent segfault */
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if( p_chk->strf.auds.p_wf->cbSize >
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p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
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p_chk->strf.auds.p_wf->cbSize =
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p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
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if( p_chk->strf.auds.p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE )
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/* Found an extensible header atm almost nothing uses that. */
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msg_Warn( (vlc_object_t*)s, "WAVE_FORMAT_EXTENSIBLE or "
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"vorbis audio dectected: not supported" );
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p_chk->strf.auds.p_wf->cbSize = 0;
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if( p_chk->strf.auds.p_wf->cbSize > 0 )
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memcpy( &p_chk->strf.auds.p_wf[1] ,
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p_buff + 8 + sizeof( WAVEFORMATEX ), /* 8=fourrc+size */
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p_chk->strf.auds.p_wf->cbSize );
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msg_Dbg( (vlc_object_t*)s,
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"strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
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p_chk->strf.auds.p_wf->wFormatTag,
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p_chk->strf.auds.p_wf->nChannels,
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p_chk->strf.auds.p_wf->nSamplesPerSec,
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p_chk->strf.auds.p_wf->wBitsPerSample,
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p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
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case( AVIFOURCC_vids ):
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p_strh->strh.i_samplesize = 0; /* XXX for ffmpeg avi file */
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p_chk->strf.vids.i_cat = VIDEO_ES;
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p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
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AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
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AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
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AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
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AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
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if( p_chk->strf.vids.p_bih->biSize >
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p_chk->common.i_chunk_size )
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p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
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if( p_chk->strf.vids.p_bih->biSize - sizeof(BITMAPINFOHEADER) > 0 )
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memcpy( &p_chk->strf.vids.p_bih[1],
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p_buff + 8 + sizeof(BITMAPINFOHEADER), /* 8=fourrc+size */
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p_chk->strf.vids.p_bih->biSize -
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sizeof(BITMAPINFOHEADER) );
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msg_Dbg( (vlc_object_t*)s,
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"strf: video:%4.4s %dx%d planes:%d %dbpp",
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(char*)&p_chk->strf.vids.p_bih->biCompression,
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p_chk->strf.vids.p_bih->biWidth,
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p_chk->strf.vids.p_bih->biHeight,
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p_chk->strf.vids.p_bih->biPlanes,
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p_chk->strf.vids.p_bih->biBitCount );
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msg_Warn( (vlc_object_t*)s, "unknown stream type" );
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p_chk->strf.common.i_cat = UNKNOWN_ES;
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AVI_READCHUNK_EXIT( VLC_SUCCESS );
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static void AVI_ChunkFree_strf( avi_chunk_t *p_chk )
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avi_chunk_strf_t *p_strf = (avi_chunk_strf_t*)p_chk;
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if( p_strf->common.i_cat == AUDIO_ES )
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FREE( p_strf->auds.p_wf );
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else if( p_strf->common.i_cat == VIDEO_ES )
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FREE( p_strf->vids.p_bih );
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static int AVI_ChunkRead_strd( stream_t *s, avi_chunk_t *p_chk )
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p_chk->strd.p_data = malloc( p_chk->common.i_chunk_size );
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memcpy( p_chk->strd.p_data,
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p_chk->common.i_chunk_size );
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AVI_READCHUNK_EXIT( VLC_SUCCESS );
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static int AVI_ChunkRead_idx1( stream_t *s, avi_chunk_t *p_chk )
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unsigned int i_count, i_index;
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i_count = __MIN( (int64_t)p_chk->common.i_chunk_size, i_read ) / 16;
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p_chk->idx1.i_entry_count = i_count;
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p_chk->idx1.i_entry_max = i_count;
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p_chk->idx1.entry = calloc( i_count, sizeof( idx1_entry_t ) );
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for( i_index = 0; i_index < i_count ; i_index++ )
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AVI_READFOURCC( p_chk->idx1.entry[i_index].i_fourcc );
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AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
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AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
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AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
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p_chk->idx1.entry = NULL;
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msg_Dbg( (vlc_object_t*)s, "idx1: index entry:%d", i_count );
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AVI_READCHUNK_EXIT( VLC_SUCCESS );
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static void AVI_ChunkFree_idx1( avi_chunk_t *p_chk )
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p_chk->idx1.i_entry_count = 0;
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p_chk->idx1.i_entry_max = 0;
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FREE( p_chk->idx1.entry )
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static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
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unsigned int i_count, i;
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avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
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AVI_READ2BYTES( p_indx->i_longsperentry );
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AVI_READ1BYTE ( p_indx->i_indexsubtype );
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AVI_READ1BYTE ( p_indx->i_indextype );
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AVI_READ4BYTES( p_indx->i_entriesinuse );
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AVI_READ4BYTES( p_indx->i_id );
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p_indx->idx.std = NULL;
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p_indx->idx.field = NULL;
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p_indx->idx.super = NULL;
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if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
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AVI_READ8BYTES( p_indx->i_baseoffset );
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AVI_READ4BYTES( i_dummy );
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i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
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p_indx->i_entriesinuse = i_count;
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p_indx->idx.std = calloc( sizeof( indx_std_entry_t ), i_count );
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for( i = 0; i < i_count; i++ )
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AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
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AVI_READ4BYTES( p_indx->idx.std[i].i_size );
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else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
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AVI_READ8BYTES( p_indx->i_baseoffset );
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AVI_READ4BYTES( i_dummy );
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i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
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p_indx->i_entriesinuse = i_count;
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p_indx->idx.field = calloc( sizeof( indx_field_entry_t ), i_count );
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for( i = 0; i < i_count; i++ )
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AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
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AVI_READ4BYTES( p_indx->idx.field[i].i_size );
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AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
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else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
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p_indx->i_baseoffset = 0;
532
AVI_READ4BYTES( i_dummy );
533
AVI_READ4BYTES( i_dummy );
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AVI_READ4BYTES( i_dummy );
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i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
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p_indx->i_entriesinuse = i_count;
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p_indx->idx.super = calloc( sizeof( indx_super_entry_t ), i_count );
540
for( i = 0; i < i_count; i++ )
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AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
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AVI_READ4BYTES( p_indx->idx.super[i].i_size );
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AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
549
msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
553
msg_Dbg( (vlc_object_t*)s, "indx: type=%d subtype=%d entry=%d", p_indx->i_indextype, p_indx->i_indexsubtype, p_indx->i_entriesinuse );
555
AVI_READCHUNK_EXIT( VLC_SUCCESS );
557
static void AVI_ChunkFree_indx( avi_chunk_t *p_chk )
559
avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
561
FREE( p_indx->idx.std );
562
FREE( p_indx->idx.field );
563
FREE( p_indx->idx.super );
570
vlc_fourcc_t i_fourcc;
574
{ AVIFOURCC_IARL, "archive location" },
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{ AVIFOURCC_IART, "artist" },
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{ AVIFOURCC_ICMS, "commisioned" },
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{ AVIFOURCC_ICMT, "comments" },
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{ AVIFOURCC_ICOP, "copyright" },
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{ AVIFOURCC_ICRD, "creation date" },
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{ AVIFOURCC_ICRP, "cropped" },
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{ AVIFOURCC_IDIM, "dimensions" },
582
{ AVIFOURCC_IDPI, "dots per inch" },
583
{ AVIFOURCC_IENG, "engineer" },
584
{ AVIFOURCC_IGNR, "genre" },
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{ AVIFOURCC_IKEY, "keywords" },
586
{ AVIFOURCC_ILGT, "lightness" },
587
{ AVIFOURCC_IMED, "medium" },
588
{ AVIFOURCC_INAM, "name" },
589
{ AVIFOURCC_IPLT, "palette setting" },
590
{ AVIFOURCC_IPRD, "product" },
591
{ AVIFOURCC_ISBJ, "subject" },
592
{ AVIFOURCC_ISFT, "software" },
593
{ AVIFOURCC_ISHP, "sharpness" },
594
{ AVIFOURCC_ISRC, "source" },
595
{ AVIFOURCC_ISRF, "source form" },
596
{ AVIFOURCC_ITCH, "technician" },
597
{ AVIFOURCC_ISMP, "time code" },
598
{ AVIFOURCC_IDIT, "digitalization time" },
599
{ AVIFOURCC_strn, "stream name" },
602
static int AVI_ChunkRead_strz( stream_t *s, avi_chunk_t *p_chk )
605
avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
608
for( i_index = 0;; i_index++)
610
if( !AVI_strz_type[i_index].i_fourcc ||
611
AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
616
p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
617
p_strz->p_str = malloc( i_read + 1);
619
if( p_strz->i_chunk_size )
621
memcpy( p_strz->p_str, p_read, i_read );
623
p_strz->p_str[i_read] = 0;
626
msg_Dbg( (vlc_object_t*)s, "%4.4s: %s : %s",
627
(char*)&p_strz->i_chunk_fourcc, p_strz->p_type, p_strz->p_str);
629
AVI_READCHUNK_EXIT( VLC_SUCCESS );
631
static void AVI_ChunkFree_strz( avi_chunk_t *p_chk )
633
avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
634
FREE( p_strz->p_type );
635
FREE( p_strz->p_str );
638
static int AVI_ChunkRead_nothing( stream_t *s, avi_chunk_t *p_chk )
640
return AVI_NextChunk( s, p_chk );
642
static void AVI_ChunkFree_nothing( avi_chunk_t *p_chk )
649
vlc_fourcc_t i_fourcc;
650
int (*AVI_ChunkRead_function)( stream_t *s, avi_chunk_t *p_chk );
651
void (*AVI_ChunkFree_function)( avi_chunk_t *p_chk );
652
} AVI_Chunk_Function [] =
654
{ AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
655
{ AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
656
{ AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
657
{ AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
658
{ AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
659
{ AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_nothing },
660
{ AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
661
{ AVIFOURCC_indx, AVI_ChunkRead_indx, AVI_ChunkFree_indx },
662
{ AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
664
{ AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
665
{ AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
666
{ AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
667
{ AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
668
{ AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
669
{ AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
670
{ AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
671
{ AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
672
{ AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
673
{ AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
674
{ AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
675
{ AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
676
{ AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
677
{ AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
678
{ AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
679
{ AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
680
{ AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
681
{ AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
682
{ AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
683
{ AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
684
{ AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
685
{ AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
686
{ AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
687
{ AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
688
{ AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
689
{ AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
690
{ AVIFOURCC_strn, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
694
static int AVI_ChunkFunctionFind( vlc_fourcc_t i_fourcc )
696
unsigned int i_index;
697
for( i_index = 0; ; i_index++ )
699
if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
700
( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
707
int _AVI_ChunkRead( stream_t *s, avi_chunk_t *p_chk, avi_chunk_t *p_father )
716
if( AVI_ChunkReadCommon( s, p_chk ) )
718
msg_Warn( (vlc_object_t*)s, "cannot read one chunk" );
721
if( p_chk->common.i_chunk_fourcc == VLC_FOURCC( 0, 0, 0, 0 ) )
723
msg_Warn( (vlc_object_t*)s, "found null fourcc chunk (corrupted file?)" );
726
p_chk->common.p_father = p_father;
728
i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
729
if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
731
return AVI_Chunk_Function[i_index].AVI_ChunkRead_function( s, p_chk );
733
else if( ((char*)&p_chk->common.i_chunk_fourcc)[0] == 'i' &&
734
((char*)&p_chk->common.i_chunk_fourcc)[1] == 'x' )
736
p_chk->common.i_chunk_fourcc = AVIFOURCC_indx;
737
return AVI_ChunkRead_indx( s, p_chk );
739
msg_Warn( (vlc_object_t*)s, "unknown chunk (not loaded)" );
740
return AVI_NextChunk( s, p_chk );
743
void _AVI_ChunkFree( stream_t *s,
747
avi_chunk_t *p_child, *p_next;
754
/* Free all child chunk */
755
p_child = p_chk->common.p_first;
758
p_next = p_child->common.p_next;
759
AVI_ChunkFree( s, p_child );
764
i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
765
if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
768
msg_Dbg( (vlc_object_t*)s, "free chunk %4.4s",
769
(char*)&p_chk->common.i_chunk_fourcc );
771
AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_chk);
775
msg_Warn( (vlc_object_t*)s, "unknown chunk (not unloaded)" );
777
p_chk->common.p_first = NULL;
778
p_chk->common.p_last = NULL;
783
static void AVI_ChunkDumpDebug_level( vlc_object_t *p_obj,
784
avi_chunk_t *p_chk, int i_level )
788
avi_chunk_t *p_child;
790
memset( str, ' ', sizeof( str ) );
791
for( i = 1; i < i_level; i++ )
795
if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF||
796
p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
798
sprintf( str + i_level * 5,
799
"%c %4.4s-%4.4s size:"I64Fu" pos:"I64Fu,
801
(char*)&p_chk->common.i_chunk_fourcc,
802
(char*)&p_chk->list.i_type,
803
p_chk->common.i_chunk_size,
804
p_chk->common.i_chunk_pos );
808
sprintf( str + i_level * 5,
809
"+ %4.4s size:"I64Fu" pos:"I64Fu,
810
(char*)&p_chk->common.i_chunk_fourcc,
811
p_chk->common.i_chunk_size,
812
p_chk->common.i_chunk_pos );
814
msg_Dbg( p_obj, "%s", str );
816
p_child = p_chk->common.p_first;
819
AVI_ChunkDumpDebug_level( p_obj, p_child, i_level + 1 );
820
p_child = p_child->common.p_next;
824
int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
826
avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
828
vlc_bool_t b_seekable;
830
stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
832
p_list->i_chunk_pos = 0;
833
p_list->i_chunk_size = stream_Size( s );
834
p_list->i_chunk_fourcc = AVIFOURCC_LIST;
835
p_list->p_father = NULL;
836
p_list->p_next = NULL;
837
p_list->p_first = NULL;
838
p_list->p_last = NULL;
840
p_list->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
844
p_chk = malloc( sizeof( avi_chunk_t ) );
845
memset( p_chk, 0, sizeof( avi_chunk_t ) );
846
if( !p_root->common.p_first )
848
p_root->common.p_first = p_chk;
852
p_root->common.p_last->common.p_next = p_chk;
854
p_root->common.p_last = p_chk;
856
if( AVI_ChunkRead( s, p_chk, p_root ) ||
857
( stream_Tell( s ) >=
858
(off_t)p_chk->common.p_father->common.i_chunk_pos +
859
(off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
863
/* If we can't seek then stop when we 've found first RIFF-AVI */
864
if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
865
p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
871
AVI_ChunkDumpDebug_level( (vlc_object_t*)s, p_root, 0 );
875
void AVI_ChunkFreeRoot( stream_t *s,
878
AVI_ChunkFree( s, p_chk );
882
int _AVI_ChunkCount( avi_chunk_t *p_chk, vlc_fourcc_t i_fourcc )
885
avi_chunk_t *p_child;
893
p_child = p_chk->common.p_first;
896
if( p_child->common.i_chunk_fourcc == i_fourcc ||
897
( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
898
p_child->list.i_type == i_fourcc ) )
902
p_child = p_child->common.p_next;
907
void *_AVI_ChunkFind( avi_chunk_t *p_chk,
908
vlc_fourcc_t i_fourcc, int i_number )
910
avi_chunk_t *p_child;
915
p_child = p_chk->common.p_first;
919
if( p_child->common.i_chunk_fourcc == i_fourcc ||
920
( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
921
p_child->list.i_type == i_fourcc ) )
931
p_child = p_child->common.p_next;