int SPC_set_state(SPC_Config *cfg)
{
int i;
Settings.APUEnabled = TRUE;
Settings.InterpolatedSound = (cfg->is_interpolation) ? TRUE : FALSE;
Settings.SoundEnvelopeHeightReading = TRUE;
Settings.DisableSoundEcho = (cfg->is_echo) ? FALSE : TRUE;
// Settings.EnableExtraNoise = TRUE;
Settings.ReverseStereo = 0;
Settings.AltSampleDecode = 0;
// SPC mixer information
//samples_per_mix = cfg->sampling_rate / RATE * cfg->channels;
samples_per_mix = cfg->sampling_rate / RATE * cfg->channels;
so.playback_rate = cfg->sampling_rate;
so.err_rate = (uint32)(SNES_SCANLINE_TIME * 0x10000UL / (1.0 / (double) so.playback_rate));
S9xSetEchoDelay(APU.DSP [APU_EDL] & 0xf);
for (i = 0; i < 8; i++)
S9xSetSoundFrequency(i, SoundData.channels [i].hertz);
so.buffer_size = samples_per_mix;
so.stereo = (cfg->channels == 2) ? TRUE : FALSE;
if (cfg->resolution == 16){
so.buffer_size *= 2;
so.sixteen_bit = TRUE;
} else
so.sixteen_bit = FALSE;
so.encoded = FALSE;
so.mute_sound = FALSE;
return so.buffer_size;
}
static inline void S9xSetEchoWriteEnable(uint8 byte) {
SoundData.echo_write_enabled = byte;
S9xSetEchoDelay(APU.DSP [APU_EDL] & 15);
}