RetroArch/runloop.h

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - 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 __RETROARCH_RUNLOOP_H
#define __RETROARCH_RUNLOOP_H
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#include <file/nbio.h>
#include <formats/image.h>
#include <formats/rpng.h>
#include <queues/message_queue.h>
#include "libretro.h"
#ifndef AUDIO_BUFFER_FREE_SAMPLES_COUNT
#define AUDIO_BUFFER_FREE_SAMPLES_COUNT (8 * 1024)
#endif
#ifndef MEASURE_FRAME_TIME_SAMPLES_COUNT
#define MEASURE_FRAME_TIME_SAMPLES_COUNT (2 * 1024)
#endif
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#ifdef __cplusplus
extern "C" {
#endif
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typedef int (*transfer_cb_t )(void *data, size_t len);
typedef struct nbio_image_handle
{
#ifndef IS_SALAMANDER
struct texture_image ti;
#endif
bool is_blocking;
bool is_blocking_on_processing;
bool is_finished;
bool is_finished_with_processing;
transfer_cb_t cb;
struct rpng_t *handle;
unsigned processing_pos_increment;
unsigned pos_increment;
uint64_t frame_count;
uint64_t processing_frame_count;
int processing_final_state;
msg_queue_t *msg_queue;
} nbio_image_handle_t;
typedef struct nbio_handle
{
nbio_image_handle_t image;
bool is_blocking;
bool is_finished;
transfer_cb_t cb;
struct nbio_t *handle;
unsigned pos_increment;
uint64_t frame_count;
msg_queue_t *msg_queue;
} nbio_handle_t;
#ifdef HAVE_NETWORKING
typedef struct http_handle
{
struct
{
struct http_connection_t *handle;
transfer_cb_t cb;
char elem1[PATH_MAX_LENGTH];
} connection;
msg_queue_t *msg_queue;
struct http_t *handle;
transfer_cb_t cb;
} http_handle_t;
#endif
/* All data runloop-related globals go here. */
struct data_runloop
{
#ifdef HAVE_NETWORKING
http_handle_t http;
#endif
#ifdef HAVE_LIBRETRODB
struct
{
} db;
#endif
nbio_handle_t nbio;
};
/* All libretro runloop-related globals go here. */
struct runloop
{
/* Lifecycle state checks. */
bool is_paused;
bool is_idle;
bool is_menu;
bool is_slowmotion;
struct
{
struct
{
unsigned count;
unsigned max;
struct
{
struct
{
struct
{
bool is_updated;
} label;
struct
{
bool is_active;
} animation;
struct
{
bool dirty;
} framebuf;
struct
{
bool active;
} action;
} menu;
} current;
} video;
struct
{
retro_time_t minimum_time;
retro_time_t last_time;
} limit;
} frames;
struct
{
unsigned buffer_free_samples[AUDIO_BUFFER_FREE_SAMPLES_COUNT];
uint64_t buffer_free_samples_count;
retro_time_t frame_time_samples[MEASURE_FRAME_TIME_SAMPLES_COUNT];
uint64_t frame_time_samples_count;
} measure_data;
msg_queue_t *msg_queue;
};
/* Public data structures. */
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extern struct data_runloop g_data_runloop;
extern struct runloop g_runloop;
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/**
* rarch_main_iterate:
*
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* Run Libretro core in RetroArch for one frame.
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*
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* Returns: 0 on successful run, 1 if we have to wait until button input in order
* to wake up the loop, -1 if we forcibly quit out of the RetroArch iteration loop.
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**/
int rarch_main_iterate(void);
void rarch_main_msg_queue_push(const char *msg, unsigned prio,
unsigned duration, bool flush);
const char *rarch_main_msg_queue_pull(void);
void rarch_main_msg_queue_free(void);
void rarch_main_msg_queue_init(void);
void rarch_main_data_iterate(void);
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void rarch_main_data_init_queues(void);
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#ifdef __cplusplus
}
#endif
#endif