- unsigned char* out_data, unsigned out_size,
- unsigned* size_read, unsigned* size_written );
+ size_t GetMinSize() { return CHUNK_SIZE; }
-+ int Convert( void* in_data, unsigned in_size,
-+ void* out_data, unsigned out_size,
++ int Convert( const void* in_data, size_t in_size,
++ void* out_data, size_t out_size,
+ size_t* size_read, size_t* size_written );
};