public Sid(int[][] newWaveformTable, int newSampleRate, Region newRegion)
{
uint cyclesPerSec = 0;
uint cyclesNum;
uint cyclesDen;
uint sampleRate = 44100;
switch (newRegion)
{
case Region.NTSC: cyclesNum = 14318181; cyclesDen = 14; break;
case Region.PAL: cyclesNum = 17734472; cyclesDen = 18; break;
default: return;
}
waveformTable = newWaveformTable;
envelopes = new Envelope[3];
for (int i = 0; i < 3; i++)
envelopes[i] = new Envelope();
envelopeOutput = new int[3];
voices = new Voice[3];
for (int i = 0; i < 3; i++)
voices[i] = new Voice(newWaveformTable);
voiceOutput = new int[3];
filterEnable = new bool[3];
for (int i = 0; i < 3; i++)
filterEnable[i] = false;
resampler = new SpeexResampler(0, cyclesNum, sampleRate * cyclesDen, cyclesNum, sampleRate * cyclesDen, null, null);
}
public void Dispose()
{
if (resampler != null)
{
resampler.Dispose();
resampler = null;
}
}
/// <summary>
/// Creates a N64 Audio subsystem
/// </summary>
/// <param name="api">Mupen64 api which is used for fetching sound</param>
public N64Audio(mupen64plusApi core)
{
this.api = new mupen64plusAudioApi(core);
_samplingRate = api.GetSamplingRate();
Resampler = new SpeexResampler(6, SamplingRate, 44100,
SamplingRate, 44100);
core.VInterrupt += DoAudioFrame;
}
public Sid(int[][] newWaveformTable, uint sampleRate, uint cyclesNum, uint cyclesDen)
{
waveformTable = newWaveformTable;
envelopes = new Envelope[3];
for (int i = 0; i < 3; i++)
envelopes[i] = new Envelope();
envelopeOutput = new int[3];
voices = new Voice[3];
for (int i = 0; i < 3; i++)
voices[i] = new Voice(newWaveformTable);
voiceOutput = new int[3];
filterEnable = new bool[3];
for (int i = 0; i < 3; i++)
filterEnable[i] = false;
resampler = new SpeexResampler(0, cyclesNum, sampleRate * cyclesDen, cyclesNum, sampleRate * cyclesDen, null, null);
}
void InitAudio()
{
resampler = new SpeexResampler(6, 64081, 88200, 32041, 44100);
}
public void ConnectToMachine(MachineBase m, EMU7800.Win.GameProgram g)
{
framebuffer = m.CreateFrameBuffer();
BufferWidth = framebuffer.VisiblePitch;
BufferHeight = framebuffer.Scanlines;
vidbuffer = new int[BufferWidth * BufferHeight];
uint newsamplerate = (uint)m.SoundSampleFrequency;
if (newsamplerate != samplerate)
{
// really shouldn't happen (after init), but if it does, we're ready
if (resampler != null)
resampler.Dispose();
resampler = new SpeexResampler(3, newsamplerate, 44100, newsamplerate, 44100, null, null);
samplerate = newsamplerate;
dcfilter = DCFilter.DetatchedMode(256);
}
if (g.MachineType == MachineType.A7800PAL || g.MachineType == MachineType.A2600PAL)
palette = TIATables.PALPalette;
else
palette = TIATables.NTSCPalette;
}
void SetupResampler(double fps, double sps)
{
Console.WriteLine("FPS {0} SPS {1}", fps, sps);
// todo: more precise?
uint spsnum = (uint)sps * 1000;
uint spsden = (uint)1000;
resampler = new SpeexResampler(5, 44100 * spsden, spsnum, (uint)sps, 44100, null, null);
}