public override void Process(float[] buffer)
{
StepEnvelope();
prevPan = curPan;
if (State == ADSRState.Dead)
{
return;
}
ChannelVolume vol = GetVolume();
float leftVolStep = (vol.ToLeftVol - vol.FromLeftVol) * SoundMixer.Instance.SamplesReciprocal;
float rightVolStep = (vol.ToRightVol - vol.FromRightVol) * SoundMixer.Instance.SamplesReciprocal;
float leftVol = vol.FromLeftVol;
float rightVol = vol.FromRightVol;
float interStep = frequency * SoundMixer.Instance.SampleRateReciprocal;
int bufPos = 0; int samplesPerBuffer = SoundMixer.Instance.SamplesPerBuffer;
do
{
float samp = pat[pos & (pat.Length - 1)] ? 0.5f : -0.5f;
buffer[bufPos++] += samp * leftVol;
buffer[bufPos++] += samp * rightVol;
leftVol += leftVolStep;
rightVol += rightVolStep;
interPos += interStep;
int posDelta = (int)interPos;
interPos -= posDelta;
pos = (pos + posDelta) & (pat.Length - 1);
} while (--samplesPerBuffer > 0);
}
public override void Process(float[] buffer)
{
StepEnvelope();
prevLeftVol = curLeftVol; prevRightVol = curRightVol;
if (State == ADSRState.Dead)
{
return;
}
ChannelVolume vol = GetVolume();
vol.FromLeftVol *= SoundMixer.Instance.DSMasterVolume;
vol.FromRightVol *= SoundMixer.Instance.DSMasterVolume;
vol.ToLeftVol *= SoundMixer.Instance.DSMasterVolume;
vol.ToRightVol *= SoundMixer.Instance.DSMasterVolume;
ProcArgs pargs;
pargs.LeftVolStep = (vol.ToLeftVol - vol.FromLeftVol) * SoundMixer.Instance.SamplesReciprocal;
pargs.RightVolStep = (vol.ToRightVol - vol.FromRightVol) * SoundMixer.Instance.SamplesReciprocal;
pargs.LeftVol = vol.FromLeftVol;
pargs.RightVol = vol.FromRightVol;
if (bFixed && !bGoldenSun)
{
pargs.InterStep = (ROM.Instance.Game.Engine.Type == EngineType.M4A ? ROM.Instance.Game.Engine.Frequency : sample.Frequency) * SoundMixer.Instance.SampleRateReciprocal;
}
else
{
pargs.InterStep = frequency * SoundMixer.Instance.SampleRateReciprocal;
}
if (bGoldenSun) // Most Golden Sun processing is thanks to ipatix
{
pargs.InterStep /= 0x40;
switch (gsPSG.Type)
{
case GSPSGType.Square: ProcessSquare(buffer, SoundMixer.Instance.SamplesPerBuffer, pargs); break;
case GSPSGType.Saw: ProcessSaw(buffer, SoundMixer.Instance.SamplesPerBuffer, pargs); break;
case GSPSGType.Triangle: ProcessTri(buffer, SoundMixer.Instance.SamplesPerBuffer, pargs); break;
}
}
else
{
ProcessNormal(buffer, SoundMixer.Instance.SamplesPerBuffer, pargs);
}
}