diff options
| author | Michael Pavone <pavone@retrodev.com> | 2019-09-21 20:26:12 -0700 |
|---|---|---|
| committer | Michael Pavone <pavone@retrodev.com> | 2019-09-21 20:26:12 -0700 |
| commit | d00b29027a1d4a4301109735914bb5faf3481aaf (patch) | |
| tree | c364354318a68da474a19cd874b4dec73d08469c /libblastem.c | |
| parent | 0815374d15e39b203a8d133dad9104747e4057be (diff) | |
Report more accurate frame and sample rates to frontend in libretro target
Diffstat (limited to 'libblastem.c')
| -rw-r--r-- | libblastem.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/libblastem.c b/libblastem.c index 5563b26..afed82c 100644 --- a/libblastem.c +++ b/libblastem.c @@ -126,6 +126,7 @@ static void update_overscan(void) } } +static int32_t sample_rate; RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info) { update_overscan(); @@ -135,8 +136,11 @@ RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info) last_height = info->geometry.base_height; info->geometry.max_height = info->geometry.base_height * 2; info->geometry.aspect_ratio = 0; - info->timing.fps = video_standard == VID_NTSC ? 60 : 50; - info->timing.sample_rate = 53267; //approximate sample rate of YM2612 + double master_clock = video_standard == VID_NTSC ? 53693175 : 53203395; + double lines = video_standard == VID_NTSC ? 262 : 313; + info->timing.fps = master_clock / (3420.0 * lines); + info->timing.sample_rate = master_clock / (7 * 6 * 24); //sample rate of YM2612 + sample_rate = info->timing.sample_rate; } RETRO_API void retro_set_controller_port_device(unsigned port, unsigned device) @@ -416,7 +420,7 @@ static void check_put_sample(void) { for (int i = 0; i < num_audio_sources; i++) { - int32_t min_samples = audio_sources[i]->freq / 53267; + int32_t min_samples = audio_sources[i]->freq / sample_rate; if (audio_sources[i]->num_samples < min_samples) { return; } |