| #ifndef FTSTREAM_H |
| #define FTSTREAM_H |
| |
| #include <ftobjs.h> |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* integer extraction macros - the `buffer' parameter must ALWAYS be of */ |
| /* type `char*' or equivalent (1-byte elements). */ |
| /* */ |
| #define NEXT_Char(buffer) ((signed char)*buffer++) |
| #define NEXT_Byte(buffer) ((unsigned char)*buffer++) |
| |
| #define NEXT_Short(buffer) ( buffer += 2, \ |
| ( (short)((signed char)buffer[-2] << 8) | \ |
| (unsigned char)buffer[-1] ) ) |
| |
| #define NEXT_UShort(buffer) ((unsigned short)NEXT_Short(buffer)) |
| |
| #define NEXT_Offset(buffer) ( buffer += 3, \ |
| ( ((long)(signed char)buffer[-3] << 16) | \ |
| ((long)(unsigned char)buffer[-2] << 8) | \ |
| (long)(unsigned char)buffer[-1] ) ) |
| |
| #define NEXT_UOffset(buffer) ((unsigned long)NEXT_Offset(buffer)) |
| |
| #define NEXT_Long(buffer) ( buffer += 4, \ |
| ( ((long)(signed char)buffer[-4] << 24) | \ |
| ((long)(unsigned char)buffer[-3] << 16) | \ |
| ((long)(unsigned char)buffer[-2] << 8) | \ |
| (long)(unsigned char)buffer[-1] ) ) |
| |
| #define NEXT_ULong(buffer) ((unsigned long)NEXT_Long(buffer)) |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* Each GET_xxxx() macro uses an implicit `stream' variable. */ |
| /* */ |
| #define FT_GET_MACRO( func, type ) ( (type)func(stream) ) |
| |
| #define GET_Char() FT_GET_MACRO( FT_Get_Char, FT_Char ) |
| #define GET_Byte() FT_GET_MACRO( FT_Get_Char, FT_Byte ) |
| #define GET_Short() FT_GET_MACRO( FT_Get_Short, FT_Short ) |
| #define GET_UShort() FT_GET_MACRO( FT_Get_Short, FT_UShort ) |
| #define GET_Offset() FT_GET_MACRO( FT_Get_Offset, FT_Long ) |
| #define GET_UOffset() FT_GET_MACRO( FT_Get_Offset, FT_ULong ) |
| #define GET_Long() FT_GET_MACRO( FT_Get_Long, FT_Long ) |
| #define GET_ULong() FT_GET_MACRO( FT_Get_Long, FT_ULong ) |
| #define GET_Tag4() FT_GET_MACRO( FT_Get_Long, FT_ULong ) |
| |
| |
| #define FT_READ_MACRO( func, type, var ) \ |
| ( var = (type)func( stream, &error ), \ |
| error != FT_Err_Ok ) |
| |
| #define READ_Byte( var ) FT_READ_MACRO( FT_Read_Char, FT_Byte, var ) |
| #define READ_Char( var ) FT_READ_MACRO( FT_Read_Char, FT_Char, var ) |
| #define READ_Short( var ) FT_READ_MACRO( FT_Read_Short, FT_Short, var ) |
| #define READ_UShort( var ) FT_READ_MACRO( FT_Read_Short, FT_UShort, var ) |
| #define READ_Offset( var ) FT_READ_MACRO( FT_Read_Offset, FT_Long, var ) |
| #define READ_UOffset( var ) FT_READ_MACRO( FT_Read_Offset, FT_ULong, var ) |
| #define READ_Long( var ) FT_READ_MACRO( FT_Read_Long, FT_Long, var ) |
| #define READ_ULong( var ) FT_READ_MACRO( FT_Read_Long, FT_ULong, var ) |
| |
| |
| |
| BASE_DEF |
| void FT_New_Memory_Stream( FT_Library library, |
| void* base, |
| unsigned long size, |
| FT_Stream stream ); |
| |
| BASE_DEF |
| FT_Error FT_Seek_Stream( FT_Stream stream, |
| FT_ULong pos ); |
| |
| BASE_DEF |
| FT_Error FT_Skip_Stream( FT_Stream stream, |
| FT_Long distance ); |
| |
| BASE_DEF |
| FT_Long FT_Stream_Pos( FT_Stream stream ); |
| |
| |
| BASE_DEF |
| FT_Error FT_Read_Stream( FT_Stream stream, |
| void* buffer, |
| FT_ULong count ); |
| |
| BASE_DEF |
| FT_Error FT_Read_Stream_At( FT_Stream stream, |
| FT_ULong pos, |
| void* buffer, |
| FT_ULong count ); |
| |
| BASE_DEF |
| FT_Error FT_Access_Frame( FT_Stream stream, |
| FT_ULong count ); |
| |
| BASE_DEF |
| void FT_Forget_Frame( FT_Stream stream ); |
| |
| |
| |
| BASE_DEF |
| FT_Char FT_Get_Char( FT_Stream stream ); |
| |
| BASE_DEF |
| FT_Short FT_Get_Short( FT_Stream stream ); |
| |
| BASE_DEF |
| FT_Long FT_Get_Offset( FT_Stream stream ); |
| |
| BASE_DEF |
| FT_Long FT_Get_Long( FT_Stream stream ); |
| |
| |
| |
| BASE_DEF |
| FT_Char FT_Read_Char( FT_Stream stream, |
| FT_Error* error ); |
| |
| BASE_DEF |
| FT_Short FT_Read_Short( FT_Stream stream, |
| FT_Error* error ); |
| |
| BASE_DEF |
| FT_Long FT_Read_Offset( FT_Stream stream, |
| FT_Error* error ); |
| |
| BASE_DEF |
| FT_Long FT_Read_Long( FT_Stream stream, |
| FT_Error* error ); |
| |
| |
| #define USE_Stream( resource, stream ) \ |
| FT_SET_ERROR( FT_Open_Stream( resource, stream ) ) |
| |
| #define DONE_Stream( stream ) \ |
| FT_Done_Stream( stream ) |
| |
| |
| #define ACCESS_Frame( size ) \ |
| FT_SET_ERROR( FT_Access_Frame( stream, size ) ) |
| |
| #define ACCESS_Compressed_Frame( size ) \ |
| FT_SET_ERROR( FT_Access_Compressed_Frame( stream, size ) ) |
| |
| |
| #define FORGET_Frame() \ |
| FT_Forget_Frame( stream ) |
| |
| |
| #define FILE_Seek( position ) \ |
| FT_SET_ERROR( FT_Seek_Stream( stream, position ) ) |
| |
| #define FILE_Skip( distance ) \ |
| FT_SET_ERROR( FT_Skip_Stream( stream, distance ) ) |
| |
| #define FILE_Pos() \ |
| FT_Stream_Pos( stream ) |
| |
| #define FILE_Read( buffer, count ) \ |
| FT_SET_ERROR( FT_Read_Stream( stream, \ |
| (FT_Char*)buffer, \ |
| count ) ) |
| |
| #define FILE_Read_At( position, buffer, count ) \ |
| FT_SET_ERROR( FT_Read_Stream_At( stream, \ |
| position, \ |
| (FT_Char*)buffer, \ |
| count ) ) |
| |
| |
| |
| #endif /* FTIO_H */ |