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Commit 706297b3 authored by Laurent Aimar's avatar Laurent Aimar
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* all : forgot to add theses new files :p

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modules/demux/avi/libavi.c 0 → 100644
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/*****************************************************************************
* libavi.c :
*****************************************************************************
* Copyright (C) 2001 VideoLAN
* $Id: libavi.c,v 1.1 2002/10/15 00:56:43 fenrir Exp $
* 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.
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <string.h> /* strdup() */
#include <errno.h>
#include <sys/types.h>
#include <vlc/vlc.h>
#include <vlc/input.h>
#include "libavi.h"
#define AVI_DEBUG 1
#define AVIFOURCC_PRINT( x ) \
(x)&0xff, \
( (x) >> 8 )&0xff, \
( (x) >> 16 )&0xff, \
( (x) >> 24 )&0xff
#define FREE( p ) \
if( p ) {free( p ); p = NULL; }
#define __EVEN( x ) ( (x)&0x01 ? (x)+1 : (x) )
/* Some functions to manipulate memory */
static u16 GetWLE( u8 *p_buff )
{
return( (p_buff[0]) + ( p_buff[1] <<8 ) );
}
static u32 GetDWLE( u8 *p_buff )
{
return( p_buff[0] + ( p_buff[1] <<8 ) +
( p_buff[2] <<16 ) + ( p_buff[3] <<24 ) );
}
static vlc_fourcc_t GetFOURCC( byte_t *p_buff )
{
return( VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] ) );
}
/*****************************************************************************
* Some basic functions to manipulate stream more easily in vlc
*
* AVI_TellAbsolute get file position
*
* AVI_SeekAbsolute seek in the file
*
* AVI_ReadData read data from the file in a buffer
*
* AVI_SkipBytes skip bytes
*
*****************************************************************************/
off_t AVI_TellAbsolute( input_thread_t *p_input )
{
off_t i_pos;
vlc_mutex_lock( &p_input->stream.stream_lock );
i_pos= p_input->stream.p_selected_area->i_tell -
( p_input->p_last_data - p_input->p_current_data );
vlc_mutex_unlock( &p_input->stream.stream_lock );
return( i_pos );
}
int AVI_SeekAbsolute( input_thread_t *p_input,
off_t i_pos)
{
off_t i_filepos;
if( i_pos >= p_input->stream.p_selected_area->i_size )
{
return( 0 );
}
i_filepos = AVI_TellAbsolute( p_input );
if( i_filepos == i_pos )
{
return( 1 );
}
if( p_input->stream.b_seekable &&
p_input->stream.i_method == INPUT_METHOD_FILE )
{
p_input->pf_seek( p_input, i_pos );
input_AccessReinit( p_input );
return( 1 );
}
else
{
int i_peek;
int i_skip = i_pos - i_filepos;
u8 *p_peek;
msg_Warn( p_input, "will skip %d bytes, slow", i_skip );
if( i_skip < 0 )
{
return( 0 ); // failed
}
while( i_skip > 0 )
{
i_peek = input_Peek( p_input, &p_peek, i_skip+1 );
i_peek--;
i_skip -= i_peek;
vlc_mutex_lock( &p_input->stream.stream_lock );
p_input->p_current_data += i_peek; // skip them
vlc_mutex_unlock( &p_input->stream.stream_lock );
if( i_peek <= 0 )
{
return( 0);
}
}
return( 1 );
}
}
/* return 1 if success, 0 if fail */
int AVI_ReadData( input_thread_t *p_input, u8 *p_buff, int i_size )
{
data_packet_t *p_data;
int i_count;
int i_read = 0;
if( !i_size )
{
return( 0 );
}
do
{
i_count = input_SplitBuffer(p_input, &p_data, __MIN( i_size, 1024 ) );
if( i_count <= 0 )
{
return( i_read );
}
memcpy( p_buff, p_data->p_payload_start, i_count );
input_DeletePacket( p_input->p_method_data, p_data );
p_buff += i_count;
i_size -= i_count;
i_read += i_count;
} while( i_size );
return( i_read );
}
int AVI_SkipBytes( input_thread_t *p_input, int i_count )
{
int i_buff_size;
vlc_mutex_lock( &p_input->stream.stream_lock );
i_buff_size = p_input->p_last_data - p_input->p_current_data;
vlc_mutex_unlock( &p_input->stream.stream_lock );
if( i_count > 0 && i_count + 1 < i_buff_size )
{
u8 *p_peek;
input_Peek( p_input, &p_peek, i_count + 1 );
vlc_mutex_lock( &p_input->stream.stream_lock );
p_input->p_current_data += i_count; // skip them
vlc_mutex_unlock( &p_input->stream.stream_lock );
return( 1 );
}
else
{
return( AVI_SeekAbsolute( p_input,
AVI_TellAbsolute( p_input ) + i_count ) );
}
}
/*****************************************************************************
*
* AVI_TestFile: look at first bytes to see if it's a valid avi file
*
* unseekable: ok
*
*****************************************************************************/
int AVI_TestFile( input_thread_t *p_input )
{
u8 *p_peek;
if( input_Peek( p_input, &p_peek, 8 ) < 8 )
{
msg_Err( p_input, "cannot peek()" );
return( 0 );
}
if( GetDWLE( p_peek ) == AVIFOURCC_RIFF &&
GetDWLE( p_peek + 8 ) == AVIFOURCC_AVI )
{
return( 1 );
}
else
{
return( 0 );
}
}
/****************************************************************************
*
* Basics functions to manipulates chunks
*
****************************************************************************/
static int AVI_ChunkReadCommon( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
u8 *p_peek;
int i_peek;
memset( p_chk, 0, sizeof( avi_chunk_t ) );
if( ( i_peek = input_Peek( p_input, &p_peek, 8 ) ) < 8 )
{
return( 0 );
}
p_chk->common.i_chunk_fourcc = GetDWLE( p_peek );
p_chk->common.i_chunk_size = GetDWLE( p_peek + 4 );
p_chk->common.i_chunk_pos = AVI_TellAbsolute( p_input );
p_chk->common.p_father = NULL;
p_chk->common.p_next = NULL;
p_chk->common.p_first = NULL;
p_chk->common.p_next = NULL;
#ifdef AVI_DEBUG
msg_Dbg( p_input,
"Found Chunk fourcc:%c%c%c%c size:%lld pos:%lld",
AVIFOURCC_PRINT( p_chk->common.i_chunk_fourcc ),
p_chk->common.i_chunk_size,
p_chk->common.i_chunk_pos );
#endif
return( 1 );
}
static int AVI_NextChunk( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
avi_chunk_t chk;
if( !p_chk )
{
if( !AVI_ChunkReadCommon( p_input, &chk ) )
{
return( 0 );
}
p_chk = &chk;
}
if( p_chk->common.p_father )
{
if( p_chk->common.p_father->common.i_chunk_pos +
__EVEN( p_chk->common.p_father->common.i_chunk_size ) + 8 <
p_chk->common.i_chunk_pos +
__EVEN( p_chk->common.i_chunk_size ) + 8 )
{
return( 0 );
}
}
return( AVI_SeekAbsolute( p_input,
p_chk->common.i_chunk_pos +
__EVEN( p_chk->common.i_chunk_size ) + 8 ) );
}
int _AVI_ChunkGoto( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
if( !p_chk )
{
return( 0 );
}
return( AVI_SeekAbsolute( p_input, p_chk->common.i_chunk_pos ) );
}
/****************************************************************************
*
* Functions to read chunks
*
****************************************************************************/
static int AVI_ChunkRead_list( input_thread_t *p_input,
avi_chunk_t *p_container,
int b_seekable )
{
avi_chunk_t *p_chk;
u8 *p_peek;
if( p_container->common.i_chunk_size < 8 )
{
/* empty box */
msg_Warn( p_input, "empty list chunk" );
return( 0 );
}
if( input_Peek( p_input, &p_peek, 12 ) < 12 )
{
msg_Warn( p_input, "cannot peek while reading list chunk" );
return( 0 );
}
p_container->list.i_type = GetDWLE( p_peek + 8 );
if( p_container->common.i_chunk_fourcc == AVIFOURCC_LIST &&
p_container->list.i_type == AVIFOURCC_movi )
{
msg_Dbg( p_input, "Skipping movi chunk" );
if( b_seekable )
{
return( AVI_NextChunk( p_input, p_container ) );
}
else
{
return( 1 ); // point at begining of LIST-movi
}
}
AVI_SkipBytes( p_input, 12 );
#ifdef AVI_DEBUG
msg_Dbg( p_input,
"found LIST chunk: \'%c%c%c%c\'",
AVIFOURCC_PRINT( p_container->list.i_type ) );
#endif
for( ; ; )
{
p_chk = malloc( sizeof( avi_chunk_t ) );
memset( p_chk, 0, sizeof( avi_chunk_t ) );
if( !p_container->common.p_first )
{
p_container->common.p_first = p_chk;
}
else
{
p_container->common.p_last->common.p_next = p_chk;
}
p_container->common.p_last = p_chk;
if( !AVI_ChunkRead( p_input, p_chk, p_container, b_seekable ) ||
( AVI_TellAbsolute( p_input ) >=
p_chk->common.p_father->common.i_chunk_pos +
__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
{
break;
}
/* If we can't seek then stop when we 've found LIST-movi */
if( p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST &&
p_chk->list.i_type == AVIFOURCC_movi && !b_seekable )
{
break;
}
}
return( 1 );
}
#define AVI_READCHUNK_ENTER \
s64 i_read = __EVEN(p_chk->common.i_chunk_size ) + 8; \
u8 *p_read, *p_buff; \
if( !( p_read = p_buff = malloc(i_read ) ) ) \
{ \
return( 0 ); \
} \
i_read = AVI_ReadData( p_input, p_read, i_read ); \
p_read += 8; \
i_read -= 8
#define AVI_READCHUNK_EXIT( code ) \
free( p_buff ); \
if( i_read < 0 ) \
{ \
msg_Warn( p_input, "not enougth data" ); \
} \
return( code )
#define AVI_READ2BYTES( i_word ) \
i_word = GetWLE( p_read ); \
p_read += 2; \
i_read -= 2
#define AVI_READ4BYTES( i_dword ) \
i_dword = GetDWLE( p_read ); \
p_read += 4; \
i_read -= 4
#define AVI_READFOURCC( i_dword ) \
i_dword = GetFOURCC( p_read ); \
p_read += 4; \
i_read -= 4
static int AVI_ChunkRead_avih( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
AVI_READCHUNK_ENTER;
AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
AVI_READ4BYTES( p_chk->avih.i_reserved1 );
AVI_READ4BYTES( p_chk->avih.i_flags );
AVI_READ4BYTES( p_chk->avih.i_totalframes );
AVI_READ4BYTES( p_chk->avih.i_initialframes );
AVI_READ4BYTES( p_chk->avih.i_streams );
AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
AVI_READ4BYTES( p_chk->avih.i_width );
AVI_READ4BYTES( p_chk->avih.i_height );
AVI_READ4BYTES( p_chk->avih.i_scale );
AVI_READ4BYTES( p_chk->avih.i_rate );
AVI_READ4BYTES( p_chk->avih.i_start );
AVI_READ4BYTES( p_chk->avih.i_length );
#ifdef AVI_DEBUG
msg_Dbg( p_input,
"avih: streams:%d flags:%s%s%s%s %dx%d",
p_chk->avih.i_streams,
p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
p_chk->avih.i_width, p_chk->avih.i_height );
#endif
AVI_READCHUNK_EXIT( 1 );
}
static int AVI_ChunkRead_strh( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
AVI_READCHUNK_ENTER;
AVI_READFOURCC( p_chk->strh.i_type );
AVI_READFOURCC( p_chk->strh.i_handler );
AVI_READ4BYTES( p_chk->strh.i_flags );
AVI_READ4BYTES( p_chk->strh.i_reserved1 );
AVI_READ4BYTES( p_chk->strh.i_initialframes );
AVI_READ4BYTES( p_chk->strh.i_scale );
AVI_READ4BYTES( p_chk->strh.i_rate );
AVI_READ4BYTES( p_chk->strh.i_start );
AVI_READ4BYTES( p_chk->strh.i_length );
AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
AVI_READ4BYTES( p_chk->strh.i_quality );
AVI_READ4BYTES( p_chk->strh.i_samplesize );
#ifdef AVI_DEBUG
msg_Dbg( p_input,
"strh: type:%c%c%c%c handler:0x%8.8x samplesize:%d %.2ffps",
AVIFOURCC_PRINT( p_chk->strh.i_type ),
p_chk->strh.i_handler,
p_chk->strh.i_samplesize,
( p_chk->strh.i_scale ?
(float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
#endif
AVI_READCHUNK_EXIT( 1 );
}
static int AVI_ChunkRead_strf( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
avi_chunk_t *p_strh;
AVI_READCHUNK_ENTER;
if( p_chk->common.p_father == NULL )
{
msg_Err( p_input, "malformed avi file" );
AVI_READCHUNK_EXIT( 0 );
}
if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
{
msg_Err( p_input, "malformed avi file" );
AVI_READCHUNK_EXIT( 0 );
}
switch( p_strh->strh.i_type )
{
case( AVIFOURCC_auds ):
AVI_READ2BYTES( p_chk->strf.auds.i_formattag );
AVI_READ2BYTES( p_chk->strf.auds.i_channels );
AVI_READ4BYTES( p_chk->strf.auds.i_samplespersec );
AVI_READ4BYTES( p_chk->strf.auds.i_avgbytespersec );
AVI_READ2BYTES( p_chk->strf.auds.i_blockalign );
AVI_READ2BYTES( p_chk->strf.auds.i_bitspersample );
if( p_chk->strf.auds.i_formattag != WAVE_FORMAT_PCM )
{
AVI_READ2BYTES( p_chk->strf.auds.i_size );
}
p_chk->strf.auds.p_wfx = malloc( p_chk->common.i_chunk_size );
memcpy( p_chk->strf.auds.p_wfx,
p_buff + 8,
p_chk->common.i_chunk_size );
#ifdef AVI_DEBUG
msg_Dbg( p_input,
"strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
p_chk->strf.auds.i_formattag,
p_chk->strf.auds.i_channels,
p_chk->strf.auds.i_samplespersec,
p_chk->strf.auds.i_bitspersample,
p_chk->strf.auds.i_avgbytespersec * 8 / 1024 );
#endif
break;
case( AVIFOURCC_vids ):
p_strh->strh.i_samplesize = 0; // XXX for ffmpeg avi file
AVI_READ4BYTES( p_chk->strf.vids.i_size );
AVI_READ4BYTES( p_chk->strf.vids.i_width );
AVI_READ4BYTES( p_chk->strf.vids.i_height );
AVI_READ2BYTES( p_chk->strf.vids.i_planes );
AVI_READ2BYTES( p_chk->strf.vids.i_bitcount );
AVI_READFOURCC( p_chk->strf.vids.i_compression );
AVI_READ4BYTES( p_chk->strf.vids.i_sizeimage );
AVI_READ4BYTES( p_chk->strf.vids.i_xpelspermeter );
AVI_READ4BYTES( p_chk->strf.vids.i_ypelspermeter );
AVI_READ4BYTES( p_chk->strf.vids.i_clrused );
AVI_READ4BYTES( p_chk->strf.vids.i_clrimportant );
p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
memcpy( p_chk->strf.vids.p_bih,
p_buff + 8,
p_chk->common.i_chunk_size );
#ifdef AVI_DEBUG
msg_Dbg( p_input,
"strf: video:%c%c%c%c %dx%d planes:%d %dbpp",
AVIFOURCC_PRINT( p_chk->strf.vids.i_compression ),
p_chk->strf.vids.i_width,
p_chk->strf.vids.i_height,
p_chk->strf.vids.i_planes,
p_chk->strf.vids.i_bitcount );
#endif
break;
default:
msg_Warn( p_input, "unknown stream type" );
break;
}
AVI_READCHUNK_EXIT( 1 );
}
static void AVI_ChunkFree_strf( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
}
static int AVI_ChunkRead_strd( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
AVI_READCHUNK_ENTER;
p_chk->strd.p_data = malloc( p_chk->common.i_chunk_size );
memcpy( p_chk->strd.p_data,
p_buff,
p_chk->common.i_chunk_size );
AVI_READCHUNK_EXIT( 1 );
}
static int AVI_ChunkRead_idx1( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
int i_count, i_index;
AVI_READCHUNK_ENTER;
i_count = __MIN( p_chk->common.i_chunk_size, i_read ) / 16;
p_chk->idx1.i_entry_count = i_count;
p_chk->idx1.i_entry_max = i_count;
if( i_count > 0 )
{
p_chk->idx1.entry = calloc( i_count, sizeof( idx1_entry_t ) );
for( i_index = 0; i_index < i_count ; i_index++ )
{
AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_fourcc );
AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
}
}
else
{
p_chk->idx1.entry = NULL;
}
#ifdef AVI_DEBUG
msg_Dbg( p_input, "idx1: index entry:%d", i_count );
#endif
AVI_READCHUNK_EXIT( 1 );
}
static void AVI_ChunkFree_idx1( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
p_chk->idx1.i_entry_count = 0;
p_chk->idx1.i_entry_max = 0;
FREE( p_chk->idx1.entry )
}
static struct
{
u32 i_fourcc;
char *psz_type;
} AVI_strz_type[] =
{
{ AVIFOURCC_IARL, "archive location" },
{ AVIFOURCC_IART, "artist" },
{ AVIFOURCC_ICMS, "commisioned" },
{ AVIFOURCC_ICMT, "comments" },
{ AVIFOURCC_ICOP, "copyright" },
{ AVIFOURCC_ICRD, "creation date" },
{ AVIFOURCC_ICRP, "cropped" },
{ AVIFOURCC_IDIM, "dimensions" },
{ AVIFOURCC_IDPI, "dots per inch" },
{ AVIFOURCC_IENG, "enginner" },
{ AVIFOURCC_IGNR, "genre" },
{ AVIFOURCC_IKEY, "keywords" },
{ AVIFOURCC_ILGT, "lightness" },
{ AVIFOURCC_IMED, "medium" },
{ AVIFOURCC_INAM, "name" },
{ AVIFOURCC_IPLT, "palette setting" },
{ AVIFOURCC_IPRD, "product" },
{ AVIFOURCC_ISBJ, "subject" },
{ AVIFOURCC_ISFT, "software" },
{ AVIFOURCC_ISHP, "sharpness" },
{ AVIFOURCC_ISRC, "source" },
{ AVIFOURCC_ISRF, "source form" },
{ AVIFOURCC_ITCH, "technician" },
{ AVIFOURCC_ISMP, "time code" },
{ AVIFOURCC_IDIT, "digitalization time" },
{ 0, "???" }
};
static int AVI_ChunkRead_strz( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
int i_index;
avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
AVI_READCHUNK_ENTER;
for( i_index = 0;; i_index++)
{
if( !AVI_strz_type[i_index].i_fourcc ||
AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
{
break;
}
}
p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
p_strz->p_str = malloc( i_read + 1);
if( p_strz->i_chunk_size )
{
memcpy( p_strz->p_str, p_read, i_read );
}
p_strz->p_str[i_read] = 0;
#ifdef AVI_DEBUG
msg_Dbg( p_input, "%c%c%c%c: %s : %s",
AVIFOURCC_PRINT( p_strz->i_chunk_fourcc), p_strz->p_type, p_strz->p_str);
#endif
AVI_READCHUNK_EXIT( 1 );
}
static void AVI_ChunkFree_strz( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
FREE( p_strz->p_type );
FREE( p_strz->p_str );
}
static int AVI_ChunkRead_nothing( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable )
{
return( AVI_NextChunk( p_input, p_chk ) );
}
static void AVI_ChunkFree_nothing( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
}
static struct
{
u32 i_fourcc;
int (*AVI_ChunkRead_function)( input_thread_t *p_input,
avi_chunk_t *p_chk,
int b_seekable );
void (*AVI_ChunkFree_function)( input_thread_t *p_input,
avi_chunk_t *p_chk );
} AVI_Chunk_Function [] =
{
{ AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
{ AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
{ AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
{ AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
{ AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
{ AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_nothing },
{ AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
{ AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
{ AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
{ 0, NULL, NULL }
};
static int AVI_ChunkFunctionFind( int i_fourcc )
{
int i_index;
for( i_index = 0; ; i_index++ )
{
if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
{
return( i_index );
}
}
}
int _AVI_ChunkRead( input_thread_t *p_input,
avi_chunk_t *p_chk,
avi_chunk_t *p_father,
int b_seekable )
{
int i_index;
int i_result;
if( !p_chk )
{
return( 0 );
}
if( !AVI_ChunkReadCommon( p_input, p_chk ) )
{
msg_Warn( p_input, "cannot read one chunk" );
return( 0 );
}
p_chk->common.p_father = p_father;
i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
{
i_result =
AVI_Chunk_Function[i_index].AVI_ChunkRead_function( p_input,
p_chk,
b_seekable );
}
else
{
msg_Warn( p_input, "unknown chunk (not loaded)" );
i_result = AVI_NextChunk( p_input, p_chk );
}
return( i_result );
}
void _AVI_ChunkFree( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
int i_index;
avi_chunk_t *p_child, *p_next;
if( !p_chk )
{
return;
}
/* Free all child chunk */
p_child = p_chk->common.p_first;
while( p_child )
{
p_next = p_child->common.p_next;
AVI_ChunkFree( p_input, p_child );
free( p_child );
p_child = p_next;
}
i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
{
#ifdef AVI_DEBUG
msg_Dbg( p_input, "free chunk %c%c%c%c",
AVIFOURCC_PRINT( p_chk->common.i_chunk_fourcc ) );
#endif
AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_input, p_chk);
}
else
{
msg_Warn( p_input, "unknown chunk (not unloaded)" );
}
p_chk->common.p_first = NULL;
p_chk->common.p_last = NULL;
return;
}
int AVI_ChunkReadRoot( input_thread_t *p_input,
avi_chunk_t *p_root,
int b_seekable )
{
avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
avi_chunk_t *p_chk;
p_list->i_chunk_pos = 0;
p_list->i_chunk_size = p_input->stream.p_selected_area->i_size;
p_list->i_chunk_fourcc = AVIFOURCC_LIST;
p_list->p_father = NULL;
p_list->p_next = NULL;
p_list->p_first = NULL;
p_list->p_last = NULL;
p_list->i_type = MKFOURCC( 'r', 'o', 'o', 't' );
for( ; ; )
{
p_chk = malloc( sizeof( avi_chunk_t ) );
memset( p_chk, 0, sizeof( avi_chunk_t ) );
if( !p_root->common.p_first )
{
p_root->common.p_first = p_chk;
}
else
{
p_root->common.p_last->common.p_next = p_chk;
}
p_root->common.p_last = p_chk;
if( !AVI_ChunkRead( p_input, p_chk, p_root, b_seekable ) ||
( AVI_TellAbsolute( p_input ) >=
p_chk->common.p_father->common.i_chunk_pos +
__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
{
break;
}
/* If we can't seek then stop when we 've found first RIFF-AVI */
if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
{
break;
}
}
return( 1 );
}
void AVI_ChunkFreeRoot( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
AVI_ChunkFree( p_input, p_chk );
}
int _AVI_ChunkCount( avi_chunk_t *p_chk, u32 i_fourcc )
{
int i_count;
avi_chunk_t *p_child;
if( !p_chk )
{
return( 0 );
}
i_count = 0;
p_child = p_chk->common.p_first;
while( p_child )
{
if( p_child->common.i_chunk_fourcc == i_fourcc ||
( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
p_child->list.i_type == i_fourcc ) )
{
i_count++;
}
p_child = p_child->common.p_next;
}
return( i_count );
}
avi_chunk_t *_AVI_ChunkFind( avi_chunk_t *p_chk, u32 i_fourcc, int i_number )
{
avi_chunk_t *p_child;
if( !p_chk )
{
return( NULL );
}
p_child = p_chk->common.p_first;
while( p_child )
{
if( p_child->common.i_chunk_fourcc == i_fourcc ||
( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
p_child->list.i_type == i_fourcc ) )
{
if( i_number == 0 )
{
/* We found it */
return( p_child );
}
i_number--;
}
p_child = p_child->common.p_next;
}
return( NULL );
}
static void AVI_ChunkDumpDebug_level( input_thread_t *p_input,
avi_chunk_t *p_chk, int i_level )
{
char str[1024];
int i;
avi_chunk_t *p_child;
memset( str, ' ', sizeof( str ) );
for( i = 1; i < i_level; i++ )
{
str[i * 5] = '|';
}
if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF||
p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
{
sprintf( str + i_level * 5,
"%c %c%c%c%c-%c%c%c%c size:%lld pos:%lld",
i_level ? '+' : '*',
AVIFOURCC_PRINT( p_chk->common.i_chunk_fourcc ),
AVIFOURCC_PRINT( p_chk->list.i_type ),
p_chk->common.i_chunk_size,
p_chk->common.i_chunk_pos );
}
else
{
sprintf( str + i_level * 5,
"+ %c%c%c%c size:%lld pos:%lld",
AVIFOURCC_PRINT( p_chk->common.i_chunk_fourcc ),
p_chk->common.i_chunk_size,
p_chk->common.i_chunk_pos );
}
msg_Dbg( p_input, "%s", str );
p_child = p_chk->common.p_first;
while( p_child )
{
AVI_ChunkDumpDebug_level( p_input, p_child, i_level + 1 );
p_child = p_child->common.p_next;
}
}
void _AVI_ChunkDumpDebug( input_thread_t *p_input,
avi_chunk_t *p_chk )
{
AVI_ChunkDumpDebug_level( p_input, p_chk, 0 );
}
modules/demux/avi/libavi.h 0 → 100644
View file @ 706297b3
/*****************************************************************************
* libavi.h : LibAVI library
******************************************************************************
* Copyright (C) 2001 VideoLAN
* $Id: libavi.h,v 1.1 2002/10/15 00:56:43 fenrir Exp $
* 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.
*****************************************************************************/
/* flags for use in <dwFlags> in AVIFileHdr */
#define AVIF_HASINDEX 0x00000010 /* Index at end of file? */
#define AVIF_MUSTUSEINDEX 0x00000020
#define AVIF_ISINTERLEAVED 0x00000100
#define AVIF_TRUSTCKTYPE 0x00000800 /* Use CKType to find key frames? */
#define AVIF_WASCAPTUREFILE 0x00010000
#define AVIF_COPYRIGHTED 0x00020000
/* Flags for index */
#define AVIIF_LIST 0x00000001L /* chunk is a 'LIST' */
#define AVIIF_KEYFRAME 0x00000010L /* this frame is a key frame.*/
#define AVIIF_NOTIME 0x00000100L /* this frame doesn't take any time */
#define AVIIF_COMPUSE 0x0FFF0000L /* these bits are for compressor use */
#define AVIIF_FIXKEYFRAME 0x00001000L /* invented; used to say that
the keyframe flag isn't a true flag
but have to be verified */
#define MKFOURCC( a, b, c, d ) \
( ((u32)a) | ( ((u32)b) << 8 ) | ( ((u32)c) << 16 ) | ( ((u32)d) << 24 ) )
#define MKTWOCC( a, b ) \
( (u16)(a) | ( (u16)(b) << 8 ) )
/* *** avi stuff *** */
#define AVIFOURCC_RIFF MKFOURCC('R','I','F','F')
#define AVIFOURCC_LIST MKFOURCC('L','I','S','T')
#define AVIFOURCC_JUNK MKFOURCC('J','U','N','K')
#define AVIFOURCC_AVI MKFOURCC('A','V','I',' ')
#define AVIFOURCC_WAVE MKFOURCC('W','A','V','E')
#define AVIFOURCC_INFO MKFOURCC('I','N','F','O')
#define AVIFOURCC_avih MKFOURCC('a','v','i','h')
#define AVIFOURCC_hdrl MKFOURCC('h','d','r','l')
#define AVIFOURCC_movi MKFOURCC('m','o','v','i')
#define AVIFOURCC_idx1 MKFOURCC('i','d','x','1')
#define AVIFOURCC_strl MKFOURCC('s','t','r','l')
#define AVIFOURCC_strh MKFOURCC('s','t','r','h')
#define AVIFOURCC_strf MKFOURCC('s','t','r','f')
#define AVIFOURCC_strd MKFOURCC('s','t','r','d')
#define AVIFOURCC_rec MKFOURCC('r','e','c',' ')
#define AVIFOURCC_auds MKFOURCC('a','u','d','s')
#define AVIFOURCC_vids MKFOURCC('v','i','d','s')
#define AVIFOURCC_IARL MKFOURCC('I','A','R','L')
#define AVIFOURCC_IART MKFOURCC('I','A','R','T')
#define AVIFOURCC_ICMS MKFOURCC('I','C','M','S')
#define AVIFOURCC_ICMT MKFOURCC('I','C','M','T')
#define AVIFOURCC_ICOP MKFOURCC('I','C','O','P')
#define AVIFOURCC_ICRD MKFOURCC('I','C','R','D')
#define AVIFOURCC_ICRP MKFOURCC('I','C','R','P')
#define AVIFOURCC_IDIM MKFOURCC('I','D','I','M')
#define AVIFOURCC_IDPI MKFOURCC('I','D','P','I')
#define AVIFOURCC_IENG MKFOURCC('I','E','N','G')
#define AVIFOURCC_IGNR MKFOURCC('I','G','N','R')
#define AVIFOURCC_IKEY MKFOURCC('I','K','E','Y')
#define AVIFOURCC_ILGT MKFOURCC('I','L','G','T')
#define AVIFOURCC_IMED MKFOURCC('I','M','E','D')
#define AVIFOURCC_INAM MKFOURCC('I','N','A','M')
#define AVIFOURCC_IPLT MKFOURCC('I','P','L','T')
#define AVIFOURCC_IPRD MKFOURCC('I','P','R','D')
#define AVIFOURCC_ISBJ MKFOURCC('I','S','B','J')
#define AVIFOURCC_ISFT MKFOURCC('I','S','F','T')
#define AVIFOURCC_ISHP MKFOURCC('I','S','H','P')
#define AVIFOURCC_ISRC MKFOURCC('I','S','R','C')
#define AVIFOURCC_ISRF MKFOURCC('I','S','R','F')
#define AVIFOURCC_ITCH MKFOURCC('I','T','C','H')
#define AVIFOURCC_ISMP MKFOURCC('I','S','M','P')
#define AVIFOURCC_IDIT MKFOURCC('I','D','I','T')
#define AVITWOCC_wb MKTWOCC('w','b')
#define AVITWOCC_db MKTWOCC('d','b')
#define AVITWOCC_dc MKTWOCC('d','c')
#define AVITWOCC_pc MKTWOCC('p','c')
/* *** codex stuff *** */
/* MPEG4 video */
#define FOURCC_DIVX VLC_FOURCC('D','I','V','X')
#define FOURCC_divx VLC_FOURCC('d','i','v','x')
#define FOURCC_DIV1 VLC_FOURCC('D','I','V','1')
#define FOURCC_div1 VLC_FOURCC('d','i','v','1')
#define FOURCC_MP4S VLC_FOURCC('M','P','4','S')
#define FOURCC_mp4s VLC_FOURCC('m','p','4','s')
#define FOURCC_M4S2 VLC_FOURCC('M','4','S','2')
#define FOURCC_m4s2 VLC_FOURCC('m','4','s','2')
#define FOURCC_xvid VLC_FOURCC('x','v','i','d')
#define FOURCC_XVID VLC_FOURCC('X','V','I','D')
#define FOURCC_XviD VLC_FOURCC('X','v','i','D')
#define FOURCC_DX50 VLC_FOURCC('D','X','5','0')
#define FOURCC_mp4v VLC_FOURCC('m','p','4','v')
#define FOURCC_4 VLC_FOURCC( 4, 0, 0, 0 )
/* MSMPEG4 v2 */
#define FOURCC_MPG4 VLC_FOURCC('M','P','G','4')
#define FOURCC_mpg4 VLC_FOURCC('m','p','g','4')
#define FOURCC_DIV2 VLC_FOURCC('D','I','V','2')
#define FOURCC_div2 VLC_FOURCC('d','i','v','2')
#define FOURCC_MP42 VLC_FOURCC('M','P','4','2')
#define FOURCC_mp42 VLC_FOURCC('m','p','4','2')
/* MSMPEG4 v3 / M$ mpeg4 v3 */
#define FOURCC_MPG3 VLC_FOURCC('M','P','G','3')
#define FOURCC_mpg3 VLC_FOURCC('m','p','g','3')
#define FOURCC_div3 VLC_FOURCC('d','i','v','3')
#define FOURCC_MP43 VLC_FOURCC('M','P','4','3')
#define FOURCC_mp43 VLC_FOURCC('m','p','4','3')
/* DivX 3.20 */
#define FOURCC_DIV3 VLC_FOURCC('D','I','V','3')
#define FOURCC_DIV4 VLC_FOURCC('D','I','V','4')
#define FOURCC_div4 VLC_FOURCC('d','i','v','4')
#define FOURCC_DIV5 VLC_FOURCC('D','I','V','5')
#define FOURCC_div5 VLC_FOURCC('d','i','v','5')
#define FOURCC_DIV6 VLC_FOURCC('D','I','V','6')
#define FOURCC_div6 VLC_FOURCC('d','i','v','6')
/* AngelPotion stuff */
#define FOURCC_AP41 VLC_FOURCC('A','P','4','1')
/* ?? */
#define FOURCC_3IV1 VLC_FOURCC('3','I','V','1')
/* H263 and H263i */
#define FOURCC_H263 VLC_FOURCC('H','2','6','3')
#define FOURCC_h263 VLC_FOURCC('h','2','6','3')
#define FOURCC_U263 VLC_FOURCC('U','2','6','3')
#define FOURCC_I263 VLC_FOURCC('I','2','6','3')
#define FOURCC_i263 VLC_FOURCC('i','2','6','3')
/* Sound formats */
#define WAVE_FORMAT_UNKNOWN 0x0000
#define WAVE_FORMAT_PCM 0x0001
#define WAVE_FORMAT_MPEG 0x0050
#define WAVE_FORMAT_MPEGLAYER3 0x0055
#define WAVE_FORMAT_A52 0x2000
#define WAVE_FORMAT_WMA1 0x0160
#define WAVE_FORMAT_WMA2 0x0161
#define AVI_CHUNK_COMMON \
u32 i_chunk_fourcc; \
u64 i_chunk_size; \
u64 i_chunk_pos; \
union avi_chunk_u *p_next; \
union avi_chunk_u *p_father; \
union avi_chunk_u *p_first; \
union avi_chunk_u *p_last;
#define AVI_CHUNK( p_chk ) (avi_chunk_t*)(p_chk)
typedef struct idx1_entry_s
{
vlc_fourcc_t i_fourcc;
u32 i_flags;
u32 i_pos;
u32 i_length;
} idx1_entry_t;
typedef struct avi_chunk_common_s
{
AVI_CHUNK_COMMON
} avi_chunk_common_t;
typedef struct avi_chunk_list_s
{
AVI_CHUNK_COMMON
u32 i_type;
} avi_chunk_list_t;
typedef struct avi_chunk_idx1_s
{
AVI_CHUNK_COMMON
int i_entry_count;
int i_entry_max;
idx1_entry_t *entry;
} avi_chunk_idx1_t;
typedef struct avi_chunk_avih_s
{
AVI_CHUNK_COMMON
u32 i_microsecperframe;
u32 i_maxbytespersec;
u32 i_reserved1; /* dwPaddingGranularity; pad to multiples of this
size; normally 2K */
u32 i_flags;
u32 i_totalframes;
u32 i_initialframes;
u32 i_streams;
u32 i_suggestedbuffersize;
u32 i_width;
u32 i_height;
u32 i_scale;
u32 i_rate;
u32 i_start;
u32 i_length;
} avi_chunk_avih_t;
typedef struct avi_chunk_strh_s
{
AVI_CHUNK_COMMON
u32 i_type;
u32 i_handler;
u32 i_flags;
u32 i_reserved1; /* wPriority wLanguage */
u32 i_initialframes;
u32 i_scale;
u32 i_rate;
u32 i_start;
u32 i_length; /* In units above... */
u32 i_suggestedbuffersize;
u32 i_quality;
u32 i_samplesize;
} avi_chunk_strh_t;
typedef struct avi_chunk_strf_auds_s
{
AVI_CHUNK_COMMON
void *p_wfx; // waveformatex_t loaded from file
u16 i_formattag; // + 0x00
u16 i_channels; // + 0x02
u32 i_samplespersec; // + 0x04
u32 i_avgbytespersec; // + 0x08
u16 i_blockalign; // + 0x0c
u16 i_bitspersample; // + 0x0e
u16 i_size; /* the extra size in bytes */
u8 *p_data;
} avi_chunk_strf_auds_t;
typedef struct avi_chunk_strf_vids_s
{
AVI_CHUNK_COMMON
void *p_bih; // bitmapinfoheader_t loaded from file
u32 i_size; /* size of header */
u32 i_width;
u32 i_height;
u16 i_planes;
u16 i_bitcount;
u32 i_compression;
u32 i_sizeimage;
u32 i_xpelspermeter;
u32 i_ypelspermeter;
u32 i_clrused;
u32 i_clrimportant;
} avi_chunk_strf_vids_t;
typedef union avi_chunk_strf_u
{
avi_chunk_strf_auds_t auds;
avi_chunk_strf_vids_t vids;
} avi_chunk_strf_t;
typedef struct avi_chunk_strd_s
{
AVI_CHUNK_COMMON
u8 *p_data;
} avi_chunk_strd_t;
typedef struct avi_chunk_STRING_s
{
AVI_CHUNK_COMMON
char *p_type;
char *p_str;
} avi_chunk_STRING_t;
typedef union avi_chunk_u
{
avi_chunk_common_t common;
avi_chunk_list_t list;
avi_chunk_idx1_t idx1;
avi_chunk_avih_t avih;
avi_chunk_strh_t strh;
avi_chunk_strf_t strf;
avi_chunk_strd_t strd;
avi_chunk_STRING_t strz;
} avi_chunk_t;
/****************************************************************************
* AVI_TestFile : test file header to see if it's an avi file
****************************************************************************/
int AVI_TestFile( input_thread_t *p_input );
/****************************************************************************
* Stream(input) acces function
****************************************************************************/
off_t AVI_TellAbsolute( input_thread_t *p_input );
int AVI_SeekAbsolute( input_thread_t *p_input, off_t i_pos);
int AVI_ReadData( input_thread_t *p_input, u8 *p_buff, int i_size );
int AVI_SkipBytes( input_thread_t *p_input, int i_count );
int _AVI_ChunkRead( input_thread_t *p_input,
avi_chunk_t *p_chk,
avi_chunk_t *p_father,
int b_seekable );
void _AVI_ChunkFree( input_thread_t *p_input,
avi_chunk_t *p_chk );
int _AVI_ChunkGoto( input_thread_t *p_input,
avi_chunk_t *p_chk );
void _AVI_ChunkDumpDebug( input_thread_t *p_input,
avi_chunk_t *p_chk );
int _AVI_ChunkCount( avi_chunk_t *p_chk, u32 i_fourcc );
avi_chunk_t *_AVI_ChunkFind( avi_chunk_t *p_chk, u32 i_fourcc, int i_number );
int AVI_ChunkReadRoot( input_thread_t *p_input,
avi_chunk_t *p_root,
int b_seekable );
void AVI_ChunkFreeRoot( input_thread_t *p_input,
avi_chunk_t *p_chk );
#define AVI_ChunkRead( p_input, p_chk, p_father, b_seekable ) \
_AVI_ChunkRead( p_input, \
(avi_chunk_t*)p_chk, \
(avi_chunk_t*)p_father, \
b_seekable )
#define AVI_ChunkFree( p_input, p_chk ) \
_AVI_ChunkFree( p_input, (avi_chunk_t*)p_chk )
#define AVI_ChunkGoto( p_input, p_chk ) \
_AVI_ChunkGoto( p_input, (avi_chunk_t*)p_chk )
#define AVI_ChunkDumpDebug( p_input, p_chk ) \
_AVI_ChunkDumpDebug( p_input, (avi_chunk_t*)p_chk )
#define AVI_ChunkCount( p_chk, i_fourcc ) \
_AVI_ChunkCount( (avi_chunk_t*)p_chk, i_fourcc )
#define AVI_ChunkFind( p_chk, i_fourcc, i_number ) \
_AVI_ChunkFind( (avi_chunk_t*)p_chk, i_fourcc, i_number )
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