/*** Sound based functions ***/
void S9xToggleSoundChannel(int c)
{
static int sound_switch = 255;
if (c == 8)
sound_switch = 255;
else
sound_switch ^= 1 << c;
S9xSetSoundControl (sound_switch);
}
void S9xToggleSoundChannel (int c)
{
static int channel_enable = 255;
if (c == 8)
channel_enable = 255;
else
channel_enable ^= 1 << c;
S9xSetSoundControl(channel_enable);
}
void SNESSystem::CPULoop()
{
if (soundEnableFlag != soundEnableFlagOld)
{
S9xSetSoundControl(soundEnableFlag);
soundEnableFlagOld = soundEnableFlag;
}
S9xSyncSound();
S9xMainLoop();
unsigned bytes = (S9xGetSampleCount() << 1) & ~3;
ZeroMemory(sound_buffer, bytes);
S9xMixSamples(sound_buffer, bytes >> 1);
if (m_output != NULL)
{
m_output->write(sound_buffer, bytes);
}
}
static void update_variables(void)
{
bool geometry_update = false;
char key[256];
struct retro_variable var;
var.key = "snes9x_overclock";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var))
{
int freq = atoi(var.value);
Settings.SuperFXClockMultiplier = freq;
}
var.key = "snes9x_up_down_allowed";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var))
{
Settings.UpAndDown = !strcmp(var.value, "disabled") ? false : true;
}
else
Settings.UpAndDown = false;
int disabled_channels=0;
strcpy(key, "snes9x_sndchan_x");
var.key=key;
for (int i=0;i<8;i++)
{
key[strlen("snes9x_sndchan_")]='1'+i;
var.value=NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && !strcmp("disabled", var.value))
disabled_channels|=1<<i;
}
S9xSetSoundControl(disabled_channels^0xFF);
int disabled_layers=0;
strcpy(key, "snes9x_layer_x");
for (int i=0;i<5;i++)
{
key[strlen("snes9x_layer_")]='1'+i;
var.value=NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && !strcmp("disabled", var.value))
disabled_layers|=1<<i;
}
Settings.BG_Forced=disabled_layers;
//for some reason, Transparency seems to control both the fixed color and the windowing registers?
var.key="snes9x_gfx_clip";
var.value=NULL;
Settings.DisableGraphicWindows=(environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && !strcmp("disabled", var.value));
var.key="snes9x_gfx_transp";
var.value=NULL;
Settings.Transparency=!(environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && !strcmp("disabled", var.value));
var.key="snes9x_gfx_hires";
var.value=NULL;
Settings.SupportHiRes=!(environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && !strcmp("disabled", var.value));
var.key = "snes9x_overscan";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
overscan_mode newval = OVERSCAN_CROP_AUTO;
if (strcmp(var.value, "enabled") == 0)
newval = OVERSCAN_CROP_ON;
else if (strcmp(var.value, "disabled") == 0)
newval = OVERSCAN_CROP_OFF;
if (newval != crop_overscan_mode)
{
crop_overscan_mode = newval;
geometry_update = true;
}
}
var.key = "snes9x_aspect";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
aspect_mode newval = ASPECT_RATIO_AUTO;
if (strcmp(var.value, "ntsc") == 0)
newval = ASPECT_RATIO_NTSC;
else if (strcmp(var.value, "pal") == 0)
newval = ASPECT_RATIO_PAL;
else if (strcmp(var.value, "4:3") == 0)
newval = ASPECT_RATIO_4_3;
else if (strcmp(var.value, "8:7") == 0)
newval = ASPECT_RATIO_8_7;
if (newval != aspect_ratio_mode)
{
aspect_ratio_mode = newval;
geometry_update = true;
}
}
if (geometry_update)
update_geometry();
}
