CEmuopl::CEmuopl(int rate, bool bit16, bool usestereo)
: use16bit(bit16), stereo(usestereo), mixbufSamples(0)
{
opl[0] = OPLCreate(OPL_TYPE_YM3812, 3579545, rate);
opl[1] = OPLCreate(OPL_TYPE_YM3812, 3579545, rate);
mixbuf0 = 0;
mixbuf1 = 0;
currType = TYPE_DUAL_OPL2;
init();
}
Y8950* y8950Create(Mixer* mixer)
{
Y8950* y8950;
y8950 = (Y8950*)calloc(1, sizeof(Y8950));
y8950->mixer = mixer;
y8950->timerRunning1 = 0;
y8950->timerRunning2 = 0;
y8950->timer1 = boardTimerCreate(onTimeout1, y8950);
y8950->timer2 = boardTimerCreate(onTimeout2, y8950);
y8950->ykIo = ykIoCreate();
y8950->handle = mixerRegisterChannel(mixer, MIXER_CHANNEL_MSXAUDIO, 0, y8950Sync, y8950SetSampleRate, y8950);
y8950->opl = OPLCreate(OPL_TYPE_Y8950, FREQUENCY, SAMPLERATE, 256, y8950);
OPLSetOversampling(y8950->opl, boardGetY8950Oversampling());
OPLResetChip(y8950->opl);
y8950->rate = mixerGetSampleRate(mixer);
return y8950;
}
/**
* Initializes a new music track.
* @param volume Music volume modifier (1.0 = 100%).
*/
AdlibMusic::AdlibMusic(float volume) : Music(), _data(0), _size(0), _volume(volume)
{
rate = Options::audioSampleRate;
if (!opl[0])
{
opl[0] = OPLCreate(OPL_TYPE_YM3812, 3579545, rate);
}
if (!opl[1])
{
opl[1] = OPLCreate(OPL_TYPE_YM3812, 3579545, rate);
}
// magic value - length of 1 tick per samplerate
if (delayRates.empty())
{
delayRates[8000] = 114 * 4;
delayRates[11025] = 157 * 4;
delayRates[16000] = 228 * 4;
delayRates[22050] = 314 * 4;
delayRates[32000] = 456 * 4;
delayRates[44100] = 629 * 4;
delayRates[48000] = 685 * 4;
}
}
