mirror of
https://github.com/libretro/RetroArch.git
synced 2024-05-09 16:43:34 -04:00
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
|
|
* Copyright (C) 2011-2017 - Daniel De Matteis
|
|
* Copyright (C) 2014-2017 - Alfred Agrell
|
|
*
|
|
* RetroArch is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __STATE_MANAGER_H
|
|
#define __STATE_MANAGER_H
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
|
|
#include <boolean.h>
|
|
#include <retro_common_api.h>
|
|
|
|
#include "dynamic.h"
|
|
|
|
RETRO_BEGIN_DECLS
|
|
|
|
enum state_manager_rewind_st_flags
|
|
{
|
|
STATE_MGR_REWIND_ST_FLAG_FRAME_IS_REVERSED = (1 << 0),
|
|
STATE_MGR_REWIND_ST_FLAG_INIT_ATTEMPTED = (1 << 1),
|
|
STATE_MGR_REWIND_ST_FLAG_HOTKEY_WAS_CHECKED = (1 << 2),
|
|
STATE_MGR_REWIND_ST_FLAG_HOTKEY_WAS_PRESSED = (1 << 3)
|
|
};
|
|
|
|
struct state_manager
|
|
{
|
|
uint8_t *data;
|
|
/* Reading and writing is done here here. */
|
|
uint8_t *head;
|
|
/* If head comes close to this, discard a frame. */
|
|
uint8_t *tail;
|
|
|
|
uint8_t *thisblock;
|
|
uint8_t *nextblock;
|
|
#if STRICT_BUF_SIZE
|
|
uint8_t *debugblock;
|
|
size_t debugsize;
|
|
#endif
|
|
|
|
size_t capacity;
|
|
/* This one is rounded up from reset::blocksize. */
|
|
size_t blocksize;
|
|
/* size_t + (blocksize + 131071) / 131072 *
|
|
* (blocksize + u16 + u16) + u16 + u32 + size_t
|
|
* (yes, the math is a bit ugly). */
|
|
size_t maxcompsize;
|
|
|
|
unsigned entries;
|
|
bool thisblock_valid;
|
|
};
|
|
|
|
typedef struct state_manager state_manager_t;
|
|
|
|
struct state_manager_rewind_state
|
|
{
|
|
/* Rewind support. */
|
|
state_manager_t *state;
|
|
size_t size;
|
|
uint8_t flags;
|
|
};
|
|
|
|
bool state_manager_frame_is_reversed(void);
|
|
|
|
void state_manager_event_deinit(
|
|
struct state_manager_rewind_state *rewind_st,
|
|
struct retro_core_t *current_core);
|
|
|
|
void state_manager_event_init(struct state_manager_rewind_state *rewind_st,
|
|
unsigned rewind_buffer_size);
|
|
|
|
/**
|
|
* check_rewind:
|
|
* @pressed : was rewind key pressed or held?
|
|
*
|
|
* Checks if rewind toggle/hold was being pressed and/or held.
|
|
**/
|
|
bool state_manager_check_rewind(
|
|
struct state_manager_rewind_state *rewind_st,
|
|
struct retro_core_t *current_core,
|
|
bool pressed,
|
|
unsigned rewind_granularity, bool is_paused,
|
|
char *s, size_t len, unsigned *time);
|
|
|
|
RETRO_END_DECLS
|
|
|
|
#endif
|