blargg_err_t track_info_( track_info_t* out, int ) const
{
get_vgm_length( h, out );
if ( gd3.size() )
parse_gd3( gd3.begin(), gd3.end(), out );
return 0;
}
blargg_err_t load_( Data_Reader& in )
{
int file_size = in.remain();
if ( file_size <= h.size_min )
return blargg_err_file_type;
RETURN_ERR( in.read( &h, h.size_min ) );
if ( !h.valid_tag() )
return blargg_err_file_type;
if ( h.size() > h.size_min )
RETURN_ERR( in.read( &h.rf5c68_rate, h.size() - h.size_min ) );
h.cleanup();
int data_offset = get_le32( h.data_offset ) + offsetof( Vgm_Core::header_t, data_offset );
int data_size = file_size - offsetof( Vgm_Core::header_t, data_offset ) - data_offset;
int gd3_offset = get_le32( h.gd3_offset );
if ( gd3_offset > 0 )
gd3_offset += offsetof( Vgm_Core::header_t, gd3_offset );
int amount_to_skip = gd3_offset - h.size();
if ( gd3_offset > 0 && gd3_offset > data_offset )
{
data_size = gd3_offset - data_offset;
amount_to_skip = 0;
RETURN_ERR( data.resize( data_size ) );
RETURN_ERR( in.skip( data_offset - h.size() ) );
RETURN_ERR( in.read( data.begin(), data_size ) );
}
int remain = file_size - gd3_offset;
byte gd3_h [gd3_header_size];
if ( gd3_offset > 0 && remain >= gd3_header_size )
{
RETURN_ERR( in.skip( amount_to_skip ) );
RETURN_ERR( in.read( gd3_h, sizeof gd3_h ) );
int gd3_size = check_gd3_header( gd3_h, remain );
if ( gd3_size )
{
RETURN_ERR( gd3.resize( gd3_size ) );
RETURN_ERR( in.read( gd3.begin(), gd3.size() ) );
}
if ( data_offset > gd3_offset )
{
RETURN_ERR( data.resize( data_size ) );
RETURN_ERR( in.skip( data_offset - gd3_offset - sizeof gd3_h - gd3.size() ) );
RETURN_ERR( in.read( data.begin(), data.end() - data.begin() ) );
}
}
return (blargg_err_t)blargg_ok;
}
blargg_err_t load_( Data_Reader& in )
{
int file_size = in.remain();
if ( file_size < Sfm_Emu::sfm_min_file_size )
return blargg_err_file_type;
RETURN_ERR( data.resize( file_size ) );
RETURN_ERR( in.read( data.begin(), data.end() - data.begin() ) );
RETURN_ERR( check_sfm_header( data.begin() ) );
int metadata_size = get_le32( data.begin() + 4 );
byte temp = data[ 8 + metadata_size ];
data[ 8 + metadata_size ] = '\0';
metadata.parseDocument( (const char *)data.begin() + 8 );
data[ 8 + metadata_size ] = temp;
return blargg_ok;
}
blargg_err_t hash_( Hash_Function& out ) const
{
hash_vgm_file( h, data.begin(), data.end() - data.begin(), out );
return (blargg_err_t)blargg_ok;
}
blargg_err_t hash_( Hash_Function& out ) const
{
hash_sfm_file( data.begin(), data.end() - data.begin(), out );
return blargg_ok;
}
