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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* 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 __VIDEO_STATE_TRACKER_H
#define __VIDEO_STATE_TRACKER_H
#include <stdint.h>
#include <boolean.h>
#include <retro_common_api.h>
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
RETRO_BEGIN_DECLS
enum state_tracker_type
{
RARCH_STATE_CAPTURE = 0,
RARCH_STATE_CAPTURE_PREV,
RARCH_STATE_TRANSITION,
RARCH_STATE_TRANSITION_COUNT,
RARCH_STATE_TRANSITION_PREV,
RARCH_STATE_PYTHON
};
enum state_ram_type
{
RARCH_STATE_NONE,
RARCH_STATE_WRAM,
RARCH_STATE_INPUT_SLOT1,
RARCH_STATE_INPUT_SLOT2
};
struct state_tracker_uniform_info
{
char id[64];
uint32_t addr;
enum state_tracker_type type;
enum state_ram_type ram_type;
uint16_t mask;
uint16_t equal;
};
struct state_tracker_info
{
const uint8_t *wram;
const struct state_tracker_uniform_info *info;
unsigned info_elem;
#ifdef HAVE_PYTHON
const char *script;
const char *script_class;
bool script_is_file;
#endif
};
struct state_tracker_uniform
{
const char *id;
float value;
};
typedef struct state_tracker state_tracker_t;
/**
* state_tracker_init:
* @info : State tracker info handle.
*
* Creates and initializes graphics state tracker.
*
* Returns: new state tracker handle if successful, otherwise NULL.
**/
state_tracker_t* state_tracker_init(const struct state_tracker_info *info);
/**
* state_tracker_free:
* @tracker : State tracker handle.
*
* Frees a state tracker handle.
**/
void state_tracker_free(state_tracker_t *tracker);
/**
* state_tracker_get_uniform:
* @tracker : State tracker handle.
* @uniforms : State tracker uniforms.
* @elem : Amount of uniform elements.
* @frame_count : Frame count.
*
* Calls update_input(), and updates each uniform
* element accordingly.
*
* Returns: Amount of state elements (either equal to @elem
* or equal to @tracker->info_eleme).
**/
unsigned state_tracker_get_uniform(state_tracker_t *tracker,
struct state_tracker_uniform *uniforms,
unsigned elem, unsigned frame_count);
RETRO_END_DECLS
#endif
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