/**
* do_pre_state_checks:
* @input : input sample for this frame
* @old_input : input sample of the previous frame
* @trigger_input : difference' input sample - difference
* between 'input' and 'old_input'
*
* Checks for state changes in this frame.
*
* Unlike do_state_checks(), this is performed for both
* the menu and the regular loop.
*
* Returns: 0.
**/
static int do_pre_state_checks(
retro_input_t input, retro_input_t old_input,
retro_input_t trigger_input)
{
if (BIT64_GET(trigger_input, RARCH_OVERLAY_NEXT))
rarch_main_command(RARCH_CMD_OVERLAY_NEXT);
if (!g_extern.is_paused || g_extern.is_menu)
{
if (BIT64_GET(trigger_input, RARCH_FULLSCREEN_TOGGLE_KEY))
rarch_main_command(RARCH_CMD_FULLSCREEN_TOGGLE);
}
if (BIT64_GET(trigger_input, RARCH_GRAB_MOUSE_TOGGLE))
rarch_main_command(RARCH_CMD_GRAB_MOUSE_TOGGLE);
#ifdef HAVE_MENU
if (check_enter_menu_func(trigger_input) || (g_extern.libretro_dummy))
do_state_check_menu_toggle();
#endif
return 0;
}
int rarch_main_iterate(void)
{
unsigned i;
retro_input_t trigger_input;
int ret = 0;
static retro_input_t last_input = 0;
retro_input_t old_input = last_input;
retro_input_t input = input_keys_pressed();
last_input = input;
if (driver.flushing_input)
driver.flushing_input = (input) ? input_flush(&input) : false;
trigger_input = input & ~old_input;
if (time_to_exit(input))
return -1;
if (g_extern.system.frame_time.callback)
update_frame_time();
#ifdef HAVE_MENU
if (check_enter_menu_func(trigger_input) || (g_extern.libretro_dummy))
do_state_check_menu_toggle();
if (g_extern.is_menu)
{
if (menu_iterate(input, old_input, trigger_input) == -1)
rarch_main_set_state(RARCH_ACTION_STATE_MENU_RUNNING_FINISHED);
if (!input && g_settings.menu.pause_libretro)
ret = 1;
goto success;
}
#endif
if (g_extern.exec)
{
g_extern.exec = false;
return -1;
}
if (do_state_checks(input, old_input, trigger_input))
{
/* RetroArch has been paused */
driver.retro_ctx.poll_cb();
rarch_sleep(10);
return 1;
}
#if defined(HAVE_THREADS)
lock_autosave();
#endif
#ifdef HAVE_NETPLAY
if (driver.netplay_data)
netplay_pre_frame((netplay_t*)driver.netplay_data);
#endif
if (g_extern.bsv.movie)
bsv_movie_set_frame_start(g_extern.bsv.movie);
if (g_extern.system.camera_callback.caps)
driver_camera_poll();
/* Update binds for analog dpad modes. */
for (i = 0; i < MAX_PLAYERS; i++)
{
if (!g_settings.input.analog_dpad_mode[i])
continue;
input_push_analog_dpad(g_settings.input.binds[i],
g_settings.input.analog_dpad_mode[i]);
input_push_analog_dpad(g_settings.input.autoconf_binds[i],
g_settings.input.analog_dpad_mode[i]);
}
if ((g_settings.video.frame_delay > 0) && !driver.nonblock_state)
rarch_sleep(g_settings.video.frame_delay);
/* Run libretro for one frame. */
pretro_run();
for (i = 0; i < MAX_PLAYERS; i++)
{
if (!g_settings.input.analog_dpad_mode[i])
continue;
input_pop_analog_dpad(g_settings.input.binds[i]);
input_pop_analog_dpad(g_settings.input.autoconf_binds[i]);
}
if (g_extern.bsv.movie)
bsv_movie_set_frame_end(g_extern.bsv.movie);
#ifdef HAVE_NETPLAY
if (driver.netplay_data)
netplay_post_frame((netplay_t*)driver.netplay_data);
#endif
#if defined(HAVE_THREADS)
unlock_autosave();
#endif
success:
if (g_settings.fastforward_ratio_throttle_enable)
limit_frame_time();
return ret;
}