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 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 )
{
long file_size = in.remain();
if ( file_size <= Vgm_Emu::header_size )
return gme_wrong_file_type;
RETURN_ERR( in.read( &h, Vgm_Emu::header_size ) );
RETURN_ERR( check_vgm_header( h ) );
long gd3_offset = get_le32( h.gd3_offset ) - 0x2C;
long remain = file_size - Vgm_Emu::header_size - gd3_offset;
byte gd3_h [gd3_header_size];
if ( gd3_offset > 0 && remain >= gd3_header_size )
{
RETURN_ERR( in.skip( gd3_offset ) );
RETURN_ERR( in.read( gd3_h, sizeof gd3_h ) );
long 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() ) );
}
}
return 0;
}
blargg_err_t load_( Data_Reader& in )
{
int file_size = in.remain();
if ( file_size <= h.size )
return blargg_err_file_type;
RETURN_ERR( in.read( &h, h.size ) );
if ( !h.valid_tag() )
return blargg_err_file_type;
int gd3_offset = get_le32( h.gd3_offset ) - 0x2C;
int remain = file_size - h.size - gd3_offset;
byte gd3_h [gd3_header_size];
if ( gd3_offset > 0 && remain >= gd3_header_size )
{
RETURN_ERR( in.skip( gd3_offset ) );
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() ) );
}
}
return blargg_ok;
}
blargg_err_t load_( Data_Reader& in )
{
long file_size = in.remain();
if ( file_size < Snes_Spc::spc_min_file_size )
return gme_wrong_file_type;
RETURN_ERR( in.read( &header, Spc_Emu::header_size ) );
RETURN_ERR( check_spc_header( header.tag ) );
long const xid6_offset = 0x10200;
long xid6_size = file_size - xid6_offset;
if ( xid6_size > 0 )
{
RETURN_ERR( xid6.resize( xid6_size ) );
RETURN_ERR( in.skip( xid6_offset - Spc_Emu::header_size ) );
RETURN_ERR( in.read( xid6.begin(), xid6.size() ) );
}
return 0;
}
// Read multiple strings and separate into individual strings
static blargg_err_t read_strs( Data_Reader& in, int size, blargg_vector<char>& chars,
blargg_vector<const char*>& strs )
{
RETURN_ERR( chars.resize( size + 1 ) );
chars [size] = 0; // in case last string doesn't have terminator
RETURN_ERR( in.read( &chars [0], size ) );
RETURN_ERR( strs.resize( 128 ) );
int count = 0;
for ( int i = 0; i < size; i++ )
{
if ( (int) strs.size() <= count )
RETURN_ERR( strs.resize( count * 2 ) );
strs [count++] = &chars [i];
while ( i < size && chars [i] )
i++;
}
return strs.resize( count );
}
blargg_err_t track_info_( track_info_t* out, int ) const
{
get_spc_info( header, xid6.begin(), xid6.size(), out );
return 0;
}