Genesis-Plus-GX/libretro-common/include/streams/interface_stream.h

/* Copyright  (C) 2010-2017 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (interface_stream.h).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef _LIBRETRO_SDK_INTERFACE_STREAM_H
#define _LIBRETRO_SDK_INTERFACE_STREAM_H

#include <stdint.h>
#include <stddef.h>
#include <sys/types.h>

#include <retro_common_api.h>
#include <boolean.h>

RETRO_BEGIN_DECLS

enum intfstream_type
{
   INTFSTREAM_FILE = 0,
   INTFSTREAM_MEMORY
};

typedef struct intfstream_internal intfstream_internal_t;

typedef struct intfstream intfstream_t;

typedef struct intfstream_info
{
   struct
   {
      struct
      {
         uint8_t *data;
         unsigned size;
      } buf;
      bool writable;
   } memory;
   enum intfstream_type type;
} intfstream_info_t;

void *intfstream_init(intfstream_info_t *info);

bool intfstream_resize(intfstream_internal_t *intf,
      intfstream_info_t *info);

bool intfstream_open(intfstream_internal_t *intf,
      const char *path, unsigned mode, ssize_t len);

ssize_t intfstream_read(intfstream_internal_t *intf,
      void *s, size_t len);

ssize_t intfstream_write(intfstream_internal_t *intf,
      const void *s, size_t len);

char *intfstream_gets(intfstream_internal_t *intf,
      char *buffer, size_t len);

int intfstream_getc(intfstream_internal_t *intf);

int intfstream_seek(intfstream_internal_t *intf,
      int offset, int whence);

void intfstream_rewind(intfstream_internal_t *intf);

int intfstream_tell(intfstream_internal_t *intf);

void intfstream_putc(intfstream_internal_t *intf, int c);

int intfstream_close(intfstream_internal_t *intf);

RETRO_END_DECLS

#endif