unsigned short Reader::ReadUnsignedShortOrDie(void) {
unsigned short s;
if (! ReadUnsignedShort(&s)) {
fprintf(stderr, "Couldn't read unsigned short; file %s byte pos %lli "
"file_size %lli\n", filename_.c_str(), byte_pos_, file_size_);
exit(-1);
}
return s;
}
static void ProcessStsdAtom( char* atomData, qtmovie_t* qtmovie )
{
unsigned int entrySize;
unsigned int numEntries = ReadUnsignedInt( &atomData[ 4 ] );
// According to original source, we only expect one entry in sample description atom
if ( numEntries != 1 )
return;
// The size of the entry is...?
entrySize = ReadUnsignedInt( &atomData[ 8 ] );
qtmovie->res->format = ReadUnsignedInt( &atomData[ 12 ] );
if ( qtmovie->res->format == MAKE_ATOM_NAME( 'a', 'l', 'a', 'c' ) )
{
g_IsAppleLossless = 1;
qtmovie->res->num_channels = ReadUnsignedShort( &atomData[ 32 ] );
qtmovie->res->sample_size = ReadUnsignedShort( &atomData[ 34 ] );
qtmovie->res->sample_rate = ReadUnsignedShort( &atomData[ 40 ] );
// 36 is the bytes for prior to codec data for this entry.
// 12 is the additional size of our atom header (the 3 uint writes)
// 8 is for padding, as the original code is a bit paranoid..
qtmovie->res->codecdata_len = ( entrySize - 36 ) + 12 + 8;
qtmovie->res->codecdata = malloc( qtmovie->res->codecdata_len );
memset( qtmovie->res->codecdata, 0, qtmovie->res->codecdata_len );
( ( unsigned int* )qtmovie->res->codecdata )[0] = 0x0c000000;
( ( unsigned int* )qtmovie->res->codecdata )[1] = MAKE_ATOM_NAME( 'a', 'm', 'r', 'f' );
( ( unsigned int* )qtmovie->res->codecdata )[2] = MAKE_ATOM_NAME( 'c', 'a', 'l', 'a' );
memcpy( ( ( char* )qtmovie->res->codecdata ) + 12, &atomData[ 44 ], qtmovie->res->codecdata_len - 8 );
}
else
{
// Not an apple lossless file.. not interested.
g_StopParsing = 1;
}
}
