117 lines
2.5 KiB
C#
117 lines
2.5 KiB
C#
using System;
|
|
using BizHawk.Emulation.Common;
|
|
|
|
namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
|
|
{
|
|
public partial class Gameboy : ISoundProvider
|
|
{
|
|
public bool CanProvideAsync => false;
|
|
|
|
public void DiscardSamples()
|
|
{
|
|
_soundoutbuffcontains = 0;
|
|
}
|
|
|
|
public void GetSamplesSync(out short[] samples, out int nsamp)
|
|
{
|
|
samples = _soundoutbuff;
|
|
nsamp = _soundoutbuffcontains;
|
|
}
|
|
|
|
public void SetSyncMode(SyncSoundMode mode)
|
|
{
|
|
if (mode == SyncSoundMode.Async)
|
|
{
|
|
throw new NotSupportedException("Async mode is not supported.");
|
|
}
|
|
}
|
|
|
|
public SyncSoundMode SyncMode => SyncSoundMode.Sync;
|
|
|
|
public void GetSamplesAsync(short[] samples)
|
|
{
|
|
throw new InvalidOperationException("Async mode is not supported.");
|
|
}
|
|
|
|
internal bool Muted => _settings.Muted;
|
|
|
|
// sample pairs before resampling
|
|
private readonly short[] _soundbuff = new short[(35112 + 2064) * 2];
|
|
|
|
private int _soundoutbuffcontains = 0;
|
|
|
|
private readonly short[] _soundoutbuff = new short[2048];
|
|
|
|
private int _latchL = 0;
|
|
private int _latchR = 0;
|
|
|
|
private BlipBuffer _blipL, _blipR;
|
|
private uint _blipAccumulate;
|
|
|
|
private void ProcessSound(int nsamp)
|
|
{
|
|
for (uint i = 0; i < nsamp; i++)
|
|
{
|
|
int curr = _soundbuff[i * 2];
|
|
|
|
if (curr != _latchL)
|
|
{
|
|
int diff = _latchL - curr;
|
|
_latchL = curr;
|
|
_blipL.AddDelta(_blipAccumulate, diff >> 2);
|
|
}
|
|
|
|
curr = _soundbuff[(i * 2) + 1];
|
|
|
|
if (curr != _latchR)
|
|
{
|
|
int diff = _latchR - curr;
|
|
_latchR = curr;
|
|
_blipR.AddDelta(_blipAccumulate, diff >> 2);
|
|
}
|
|
|
|
_blipAccumulate++;
|
|
}
|
|
}
|
|
|
|
private void ProcessSoundEnd()
|
|
{
|
|
_blipL.EndFrame(_blipAccumulate);
|
|
_blipR.EndFrame(_blipAccumulate);
|
|
_blipAccumulate = 0;
|
|
|
|
_soundoutbuffcontains = _blipL.SamplesAvailable();
|
|
if (_soundoutbuffcontains != _blipR.SamplesAvailable())
|
|
{
|
|
throw new InvalidOperationException("Audio processing error");
|
|
}
|
|
|
|
_blipL.ReadSamplesLeft(_soundoutbuff, _soundoutbuffcontains);
|
|
_blipR.ReadSamplesRight(_soundoutbuff, _soundoutbuffcontains);
|
|
}
|
|
|
|
private void InitSound()
|
|
{
|
|
_blipL = new BlipBuffer(1024);
|
|
_blipL.SetRates(TICKSPERSECOND, 44100);
|
|
_blipR = new BlipBuffer(1024);
|
|
_blipR.SetRates(TICKSPERSECOND, 44100);
|
|
}
|
|
|
|
private void DisposeSound()
|
|
{
|
|
if (_blipL != null)
|
|
{
|
|
_blipL.Dispose();
|
|
_blipL = null;
|
|
}
|
|
|
|
if (_blipR != null)
|
|
{
|
|
_blipR.Dispose();
|
|
_blipR = null;
|
|
}
|
|
}
|
|
}
|
|
}
|