static void UpdateFM(void)
{
int32 cycles = sms.timestamp - fm_last_timestamp;
fm_div -= cycles;
while(fm_div <= 0)
{
int32 new_value;
new_value = EMU2413_calc(FMThing);
//if(new_value > 32767) { printf("MOO0: %d\n", new_value); new_value = 32767; }
//else if(new_value < -32768) { printf("MOO1: %d\n", new_value); new_value = -32768; }
//if(abs(new_value) > 95)
//{
// printf("new=%d, last=%d\n", new_value, fm_last_value);
// if(new_value < -) new_value = -95;
// else new_value = 95;
//}
fmsynth.offset(sms.timestamp + fm_div, new_value - fm_last_value, zebuf.left());
fmsynth.offset(sms.timestamp + fm_div, new_value - fm_last_value, zebuf.right());
fm_last_value = new_value;
fm_div += 72;
}
fm_last_timestamp = sms.timestamp;
}
static void RedoVolume(void)
{
apu.output(zebuf.center(), zebuf.left(), zebuf.right());
//apu.volume(0.15);
apu.volume(0.25);
FMSynth.volume(1.00);
}
void init_apu() {
#if !defined(PSP) && !defined(EMSCRIPTEN)
if ( SDL_Init( SDL_INIT_AUDIO ) < 0 )
{
atexit( SDL_Quit );
}
stereo_buf.clock_rate(CLOCK_RATE);
stereo_buf.set_sample_rate(SAMPLE_RATE);
apu.treble_eq(-15.0);
stereo_buf.bass_freq(100);
apu.set_output( stereo_buf.center(), stereo_buf.left(), stereo_buf.right() );
sound.start(SAMPLE_RATE, 2);
#endif
}
static void RedoVolume(void)
{
apu.output(zebuf.center(), zebuf.left(), zebuf.right());
apu.volume(0.50);
fmsynth.volume(1.0 / 16384); //32768); //1.0 / 256); // / 65536); //0.15 / 8192);
}