static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
{
avi_chunk_t *p_strh;
AVI_READCHUNK_ENTER;
if( p_chk->common.p_father == NULL )
{
msg_Err( (vlc_object_t*)s, "malformed avi file" );
AVI_READCHUNK_EXIT( VLC_EGENERIC );
}
if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
{
msg_Err( (vlc_object_t*)s, "malformed avi file" );
AVI_READCHUNK_EXIT( VLC_EGENERIC );
}
switch( p_strh->strh.i_type )
{
case( AVIFOURCC_auds ):
p_chk->strf.auds.i_cat = AUDIO_ES;
p_chk->strf.auds.p_wf = malloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
&& p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
{
AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
/* prevent segfault */
if( p_chk->strf.auds.p_wf->cbSize >
p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
{
p_chk->strf.auds.p_wf->cbSize =
p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
}
if( p_chk->strf.auds.p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE )
{
/* Found an extensible header atm almost nothing uses that. */
msg_Warn( (vlc_object_t*)s, "WAVE_FORMAT_EXTENSIBLE or "
"vorbis audio dectected: not supported" );
}
}
else
{
p_chk->strf.auds.p_wf->cbSize = 0;
}
if( p_chk->strf.auds.p_wf->cbSize > 0 )
{
memcpy( &p_chk->strf.auds.p_wf[1] ,
p_buff + 8 + sizeof( WAVEFORMATEX ), /* 8=fourrc+size */
p_chk->strf.auds.p_wf->cbSize );
}
#ifdef AVI_DEBUG
msg_Dbg( (vlc_object_t*)s,
"strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
p_chk->strf.auds.p_wf->wFormatTag,
p_chk->strf.auds.p_wf->nChannels,
p_chk->strf.auds.p_wf->nSamplesPerSec,
p_chk->strf.auds.p_wf->wBitsPerSample,
p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
#endif
break;
case( AVIFOURCC_vids ):
p_strh->strh.i_samplesize = 0; /* XXX for ffmpeg avi file */
p_chk->strf.vids.i_cat = VIDEO_ES;
p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
if( p_chk->strf.vids.p_bih->biSize > p_chk->common.i_chunk_size )
{
p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
}
if( p_chk->common.i_chunk_size - sizeof(BITMAPINFOHEADER) > 0 )
{
memcpy( &p_chk->strf.vids.p_bih[1],
p_buff + 8 + sizeof(BITMAPINFOHEADER), /* 8=fourrc+size */
p_chk->common.i_chunk_size -sizeof(BITMAPINFOHEADER) );
}
#ifdef AVI_DEBUG
msg_Dbg( (vlc_object_t*)s,
"strf: video:%4.4s %"PRIu32"x%"PRIu32" planes:%d %dbpp",
(char*)&p_chk->strf.vids.p_bih->biCompression,
(uint32_t)p_chk->strf.vids.p_bih->biWidth,
(uint32_t)p_chk->strf.vids.p_bih->biHeight,
p_chk->strf.vids.p_bih->biPlanes,
p_chk->strf.vids.p_bih->biBitCount );
#endif
break;
default:
msg_Warn( (vlc_object_t*)s, "unknown stream type" );
p_chk->strf.common.i_cat = UNKNOWN_ES;
break;
}
AVI_READCHUNK_EXIT( VLC_SUCCESS );
}
static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
{
unsigned int i_count, i;
int32_t i_dummy;
avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
AVI_READCHUNK_ENTER;
AVI_READ2BYTES( p_indx->i_longsperentry );
AVI_READ1BYTE ( p_indx->i_indexsubtype );
AVI_READ1BYTE ( p_indx->i_indextype );
AVI_READ4BYTES( p_indx->i_entriesinuse );
AVI_READ4BYTES( p_indx->i_id );
p_indx->idx.std = NULL;
p_indx->idx.field = NULL;
p_indx->idx.super = NULL;
if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
{
AVI_READ8BYTES( p_indx->i_baseoffset );
AVI_READ4BYTES( i_dummy );
i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
p_indx->i_entriesinuse = i_count;
p_indx->idx.std = calloc( i_count, sizeof( indx_std_entry_t ) );
for( i = 0; i < i_count; i++ )
{
AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
AVI_READ4BYTES( p_indx->idx.std[i].i_size );
}
}
else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
{
AVI_READ8BYTES( p_indx->i_baseoffset );
AVI_READ4BYTES( i_dummy );
i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
p_indx->i_entriesinuse = i_count;
p_indx->idx.field = calloc( i_count, sizeof( indx_field_entry_t ) );
for( i = 0; i < i_count; i++ )
{
AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
AVI_READ4BYTES( p_indx->idx.field[i].i_size );
AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
}
}
else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
{
p_indx->i_baseoffset = 0;
AVI_READ4BYTES( i_dummy );
AVI_READ4BYTES( i_dummy );
AVI_READ4BYTES( i_dummy );
i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
p_indx->i_entriesinuse = i_count;
p_indx->idx.super = calloc( i_count, sizeof( indx_super_entry_t ) );
for( i = 0; i < i_count; i++ )
{
AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
AVI_READ4BYTES( p_indx->idx.super[i].i_size );
AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
}
}
else
{
msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
}
#ifdef AVI_DEBUG
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 );
#endif
AVI_READCHUNK_EXIT( VLC_SUCCESS );
}
static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
{
avi_chunk_t *p_strh;
AVI_READCHUNK_ENTER;
if( p_chk->common.p_father == NULL )
{
msg_Err( (vlc_object_t*)s, "malformed avi file" );
AVI_READCHUNK_EXIT( VLC_EGENERIC );
}
if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
{
msg_Err( (vlc_object_t*)s, "malformed avi file" );
AVI_READCHUNK_EXIT( VLC_EGENERIC );
}
switch( p_strh->strh.i_type )
{
case( AVIFOURCC_auds ):
p_chk->strf.auds.i_cat = AUDIO_ES;
p_chk->strf.auds.p_wf = xmalloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
if ( !p_chk->strf.auds.p_wf )
{
AVI_READCHUNK_EXIT( VLC_ENOMEM );
}
AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
&& p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
{
AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
/* prevent segfault */
if( p_chk->strf.auds.p_wf->cbSize >
p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
{
p_chk->strf.auds.p_wf->cbSize =
p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
}
if( p_chk->strf.auds.p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE )
{
msg_Dbg( s, "Extended header found" );
}
}
else
{
p_chk->strf.auds.p_wf->cbSize = 0;
}
if( p_chk->strf.auds.p_wf->cbSize > 0 )
{
memcpy( &p_chk->strf.auds.p_wf[1] ,
p_buff + 8 + sizeof( WAVEFORMATEX ), /* 8=fourcc+size */
p_chk->strf.auds.p_wf->cbSize );
}
#ifdef AVI_DEBUG
msg_Dbg( (vlc_object_t*)s,
"strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
p_chk->strf.auds.p_wf->wFormatTag,
p_chk->strf.auds.p_wf->nChannels,
p_chk->strf.auds.p_wf->nSamplesPerSec,
p_chk->strf.auds.p_wf->wBitsPerSample,
p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
#endif
break;
case( AVIFOURCC_vids ):
p_strh->strh.i_samplesize = 0; /* XXX for ffmpeg avi file */
p_chk->strf.vids.i_cat = VIDEO_ES;
p_chk->strf.vids.p_bih = xmalloc( __MAX( p_chk->common.i_chunk_size,
sizeof( *p_chk->strf.vids.p_bih ) ) );
if ( !p_chk->strf.vids.p_bih )
{
AVI_READCHUNK_EXIT( VLC_ENOMEM );
}
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
if( p_chk->strf.vids.p_bih->biSize > p_chk->common.i_chunk_size )
{
p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
}
if ( p_chk->common.i_chunk_size > sizeof(VLC_BITMAPINFOHEADER) )
{
uint64_t i_extrasize = p_chk->common.i_chunk_size - sizeof(VLC_BITMAPINFOHEADER);
/* There's a color palette appended, set up VLC_BITMAPINFO */
memcpy( &p_chk->strf.vids.p_bih[1],
p_buff + 8 + sizeof(VLC_BITMAPINFOHEADER), /* 8=fourrc+size */
i_extrasize );
if ( !p_chk->strf.vids.p_bih->biClrUsed )
p_chk->strf.vids.p_bih->biClrUsed = (1 << p_chk->strf.vids.p_bih->biBitCount);
if( i_extrasize / sizeof(uint32_t) > UINT32_MAX )
p_chk->strf.vids.p_bih->biClrUsed = UINT32_MAX;
else
{
p_chk->strf.vids.p_bih->biClrUsed =
__MIN( i_extrasize / sizeof(uint32_t),
p_chk->strf.vids.p_bih->biClrUsed );
}
/* stay within VLC's limits */
p_chk->strf.vids.p_bih->biClrUsed =
__MIN( VIDEO_PALETTE_COLORS_MAX, p_chk->strf.vids.p_bih->biClrUsed );
}
else p_chk->strf.vids.p_bih->biClrUsed = 0;
#ifdef AVI_DEBUG
msg_Dbg( (vlc_object_t*)s,
"strf: video:%4.4s %"PRIu32"x%"PRIu32" planes:%d %dbpp",
(char*)&p_chk->strf.vids.p_bih->biCompression,
(uint32_t)p_chk->strf.vids.p_bih->biWidth,
(uint32_t)p_chk->strf.vids.p_bih->biHeight,
p_chk->strf.vids.p_bih->biPlanes,
p_chk->strf.vids.p_bih->biBitCount );
#endif
break;
case AVIFOURCC_iavs:
case AVIFOURCC_ivas:
p_chk->strf.common.i_cat = UNKNOWN_ES;
break;
case( AVIFOURCC_txts ):
p_chk->strf.common.i_cat = SPU_ES;
break;
default:
msg_Warn( (vlc_object_t*)s, "unknown stream type: %4.4s",
(char*)&p_strh->strh.i_type );
p_chk->strf.common.i_cat = UNKNOWN_ES;
break;
}
AVI_READCHUNK_EXIT( VLC_SUCCESS );
}