public static void DisposePCM(PCMSample Sample)
{
Sample.Context.Dispose();
AL.SourceStop(Sample.Source);
AL.DeleteSource(Sample.Source);
AL.DeleteBuffer(Sample.Buffer);
}
public int Update(PCMSample sample)
{
fixed(byte *p = sample.SampleData)
{
return(QueueAudio(p, (size_t)sample.SampleData.Length));
}
}
public int Update(PCMSample sample)
{
fixed(byte *p = sample.SampleData)
{
return(UpdateAudio((IntPtr)p, (uint)sample.SampleData.Length));
}
}
public static bool IsSoundPlaying(PCMSample Sample)
{
AL.GetSource(Sample.Source, ALGetSourcei.SourceState, out int State);
return((ALSourceState)State == ALSourceState.Playing);
}
private static byte[] ConvertRawPCMFile(int OutputSampleRate, int OutputChannels, byte[] PCMSamples, PCMSample PCMSampleSize, int PCMSampleRate, int PCMChannels)
{
int NumPCMSamples = (PCMSamples.Length / (int)PCMSampleSize / PCMChannels);
float PCMDuraton = NumPCMSamples / (float)PCMSampleRate;
int NumOutputSamples = (int)(PCMDuraton * OutputSampleRate);
//Ensure that samble buffer is aligned to write chunk size
NumOutputSamples = (NumOutputSamples / WriteBufferSize) * WriteBufferSize;
float[][] OutSamples = new float[OutputChannels][];
for (int ch = 0; ch < OutputChannels; ch++)
{
OutSamples[ch] = new float[NumOutputSamples];
}
for (int sampleNumber = 0; sampleNumber < NumOutputSamples; sampleNumber++)
{
float rawSample = 0.0f;
for (int ch = 0; ch < OutputChannels; ch++)
{
int sampleIndex = (sampleNumber * PCMChannels) * (int)PCMSampleSize;
if (ch < PCMChannels)
{
sampleIndex += (ch * (int)PCMSampleSize);
}
switch (PCMSampleSize)
{
case PCMSample.EightBit:
rawSample = ByteToSample(PCMSamples[sampleIndex]);
break;
case PCMSample.SixteenBit:
rawSample = ShortToSample((short)(PCMSamples[sampleIndex + 1] << 8 | PCMSamples[sampleIndex]));
break;
}
OutSamples[ch][sampleNumber] = rawSample;
}
}
return(GenerateFile(OutSamples, OutputSampleRate, OutputChannels));
}
