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Make runtime independent of fast forward/slow motion

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This commit is contained in:
jdgleaver 2019-03-04 15:30:12 +00:00
parent 8e74ff6122
commit cfbec687e5
1 changed files with 34 additions and 1 deletions

35
retroarch.c

@ -277,6 +277,7 @@ static unsigned fastforward_after_frames = 0;
static retro_usec_t runloop_frame_time_last = 0; static retro_usec_t runloop_frame_time_last = 0;
static retro_time_t frame_limit_minimum_time = 0.0; static retro_time_t frame_limit_minimum_time = 0.0;
static retro_time_t frame_limit_last_time = 0.0; static retro_time_t frame_limit_last_time = 0.0;
static retro_time_t libretro_core_runtime_last = 0;
static retro_time_t libretro_core_runtime_usec = 0; static retro_time_t libretro_core_runtime_usec = 0;
extern bool input_driver_flushing_input; extern bool input_driver_flushing_input;
@ -807,10 +808,41 @@ bool driver_ctl(enum driver_ctl_state state, void *data)
void rarch_core_runtime_tick(void) void rarch_core_runtime_tick(void)
{ {
retro_time_t frame_time;
struct retro_system_av_info *av_info = video_viewport_get_system_av_info(); struct retro_system_av_info *av_info = video_viewport_get_system_av_info();
if (av_info && av_info->timing.fps) if (av_info && av_info->timing.fps)
libretro_core_runtime_usec += (1.0 / av_info->timing.fps) * 1000 * 1000; {
frame_time = (1.0 / av_info->timing.fps) * 1000000;
/* Account for slow motion */
if (runloop_slowmotion)
{
settings_t *settings = config_get_ptr();
if (settings)
frame_time = (retro_time_t)((double)frame_time * settings->floats.slowmotion_ratio);
}
/* Account for fast forward */
else if (runloop_fastmotion)
{
/* Doing it this way means we miss the first frame after
* turning fast forward on, but it saves the overhead of
* having to do:
* retro_time_t current_usec = cpu_features_get_time_usec();
* libretro_core_runtime_last = current_usec;
* every frame when fast forward is off. */
retro_time_t current_usec = cpu_features_get_time_usec();
if (current_usec - libretro_core_runtime_last < frame_time)
{
frame_time = current_usec - libretro_core_runtime_last;
}
libretro_core_runtime_last = current_usec;
}
libretro_core_runtime_usec += frame_time;
}
} }
#ifdef HAVE_THREADS #ifdef HAVE_THREADS
@ -2382,6 +2414,7 @@ bool rarch_ctl(enum rarch_ctl_state state, void *data)
} }
break; break;
case RARCH_CTL_CONTENT_RUNTIME_LOG_INIT: case RARCH_CTL_CONTENT_RUNTIME_LOG_INIT:
libretro_core_runtime_last = cpu_features_get_time_usec();
libretro_core_runtime_usec = 0; libretro_core_runtime_usec = 0;
break; break;
case RARCH_CTL_CONTENT_RUNTIME_LOG_DEINIT: case RARCH_CTL_CONTENT_RUNTIME_LOG_DEINIT: