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Libretro: Add core options for Sound Interpolation and Filtering

This commit is contained in:
retro-wertz 2018-06-14 20:48:04 +08:00 committed by Rafael Kitover
parent 94f1102395
commit 4d4819f055
1 changed files with 43 additions and 2 deletions
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45
src/libretro/libretro.cpp
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@ -41,8 +41,10 @@ static retro_input_state_t input_cb;
retro_audio_sample_batch_t audio_batch_cb;
static retro_environment_t environ_cb;
static bool enableRtc;
static bool can_dupe;
static float sndFiltering = 0.5f;
static bool sndInterpolation = true;
static bool enableRtc = false;
static bool can_dupe = false;
int emulating = 0;
static unsigned controller_layout = 0;
@ -192,6 +194,8 @@ void retro_set_environment(retro_environment_t cb)
struct retro_variable variables[] = {
{ "vbam_solarsensor", "Solar Sensor Level; 0|1|2|3|4|5|6|7|8|9|10" },
{ "vbam_usebios", "Use BIOS file (Restart); disabled|enabled" },
{ "vbam_soundinterpolation", "Sound Interpolation; disabled|enabled" },
{ "vbam_soundfiltering", "Sound Filtering; 5|6|7|8|9|10|0|1|2|3|4" },
{ "vbam_layer_1", "Show layer 1; enabled|disabled" },
{ "vbam_layer_2", "Show layer 2; enabled|disabled" },
{ "vbam_layer_3", "Show layer 3; enabled|disabled" },
@ -497,6 +501,12 @@ static void gba_init(void)
emulating = 1;
}
static void gba_soundchanged(void)
{
soundInterpolation = sndInterpolation;
soundFiltering = sndFiltering;
}
void retro_deinit(void)
{
emulating = 0;
@ -557,6 +567,7 @@ static uint8_t sensorDarknessLevel = 0; // so we can adjust sensor from gamepad
static void update_variables(void)
{
bool sound_changed = false;
char key[256];
struct retro_variable var;
var.key = key;
@ -592,6 +603,36 @@ static void update_variables(void)
if (soundGetEnable() != sound_enabled)
soundSetEnable(sound_enabled & 0x30F);
var.key = "vbam_soundinterpolation";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
bool newval = (strcmp(var.value, "enabled") == 0);
if (sndInterpolation != newval)
{
sndInterpolation = newval;
sound_changed = true;
}
}
var.key = "vbam_soundfiltering";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
float newval = atof(var.value) * 0.1f;
if (sndFiltering != newval)
{
sndFiltering = newval;
sound_changed = true;
}
}
if (sound_changed)
//Update interpolation and filtering values
gba_soundchanged();
var.key = "vbam_usebios";
var.value = NULL;