public override void PlayInstrument(uint instrumentNumber = 0)
{
PlayBackWaveProvider waveStream = new PlayBackWaveProvider(ModuleConst.SOUNDFREQUENCY, ModuleConst.MIX_CHANNELS == ModuleConst.STEREO);
XM_Sample sample = ((XM_Instrument)Instruments[(int)instrumentNumber - 1]).sample;
string mes = "\n\n\nSample number : " + sample.orderNumber;
float period = 7680.0f - (48 + sample.relativeNoteNumber) * 64.0f;
float frequency = (float)(8363 * Math.Pow(2, (4608.0f - period) * 0.001302083f));
float periodInc = (period != 0) ? frequency * 2 / ModuleConst.SOUNDFREQUENCY : 1.0f;
float pos = 0;
mes += " freq : " + period;
DebugMes(mes);
while (pos < sample.length * 4 - 1)
{
waveStream.Write((short)sample[(int)pos]);
pos += periodInc;
}
WaveOutEvent waveOut = new WaveOutEvent();
waveOut.Init(waveStream);
waveOut.Play();
}
public void ReadFromStream(Stream stream, ref uint sampleOrder)
{
long startInstrumentPosition = stream.Position;
instrumentSize = ModuleUtils.ReadDWord(stream);
name = ModuleUtils.ReadString0(stream, 22);
instrumentType = ModuleUtils.ReadByte(stream); // Length
samplesNumber = ModuleUtils.ReadWord(stream);
samples.Clear();
if (samplesNumber > 0)
{
headerSize = ModuleUtils.ReadDWord(stream);
for (uint i = 0; i < 96; i++)
{
keymapAssignements.Add(ModuleUtils.ReadByte(stream));
}
for (uint i = 0; i < 24; i++)
{
pointsForVolumeEnvelope.Add(ModuleUtils.ReadWord(stream));
}
for (uint i = 0; i < 24; i++)
{
pointsForPanningEnvelope.Add(ModuleUtils.ReadWord(stream));
}
numberOfVolumePoints = ModuleUtils.ReadByte(stream);
numberOfPanningPoints = ModuleUtils.ReadByte(stream);
volumeSustainPoint = ModuleUtils.ReadByte(stream);
volumeLoopStartPoint = ModuleUtils.ReadByte(stream);
volumeLoopEndPoint = ModuleUtils.ReadByte(stream);
panningSustainPoint = ModuleUtils.ReadByte(stream);
panningLoopStartPoint = ModuleUtils.ReadByte(stream);
panningLoopEndPoint = ModuleUtils.ReadByte(stream);
volumeType = ModuleUtils.ReadByte(stream); // bit 0: On; 1: Sustain; 2: Loop;
panningType = ModuleUtils.ReadByte(stream); // bit 0: On; 1: Sustain; 2: Loop;
vibratoType = ModuleUtils.ReadByte(stream);
vibratoSweep = ModuleUtils.ReadByte(stream);
vibratoDepth = ModuleUtils.ReadByte(stream);
vibratoRate = ModuleUtils.ReadByte(stream);
volumeFadeout = ModuleUtils.ReadWord(stream);
//for (uint i = 0; i < 22; i++) reserved.Add(ModuleUtils.ReadByte(stream));
//System.Diagnostics.Debug.WriteLine("Seek : " + stream.Position + " " + (instrumentSize - 243) + "\n");
stream.Seek(instrumentSize - 241, SeekOrigin.Current);
long sampleDataLength = 0;
for (uint i = 0; i < samplesNumber; i++)
{
var sample = new XM_Sample();
sample.readHeaderFromStream(stream);
sample.orderNumber = sampleOrder++;
samples.Add(sample);
sampleDataLength += sample.sizeInBytes;
}
long startSampleDataPosition = stream.Position;
foreach (XM_Sample sample in samples)
{
sample.readSampleDataFromStream(stream);
}
stream.Seek(startSampleDataPosition + sampleDataLength, SeekOrigin.Begin);
}
else
{
stream.Seek(startInstrumentPosition + instrumentSize, SeekOrigin.Begin);
}
sample = (samples.Count > 0) ? samples[0] : null;
if (sample != null)
{
volume = sample.volume;
}
}