memfile_types.h

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// -*- coding: utf-8-unix -*-
/*
 * Copyright (c) 2021-2024 Daishi Mori (mori0091)
 *
 * This software is released under the MIT License.\n
 * See https://github.com/mori0091/libmsx/blob/main/LICENSE
 *
 * GitHub libmsx project\n
 * https://github.com/mori0091/libmsx
 */
#ifndef MEMFILE_TYPES_H_
#define MEMFILE_TYPES_H_
 
#include <stdint.h>
#include <stddef.h>
 
struct MemPos {
  uint8_t * ptr;                
  uint8_t segment;              
  uint8_t slot;                 
};
 
struct MemFile {
  struct MemPos base;                    
  struct MemPos curr;                    
  struct MemPos end;                     
  const struct MemFileMethods * methods; 
};
 
struct MemFileMethods {
  uint8_t (* read1)(struct MemFile * mf);
  size_t (* read)(struct MemFile * mf, void * ptr, size_t size);
  void (* seek)(struct MemPos * dst, const struct MemPos * src, long offset);
};
 
#endif // MEMFILE_TYPES_H_