protected void SampleAnalyzerLoop()
{
while (sampleAnalyzerMustStop.WaitOne(0) == false)
{
if (ProTONEConfig.IsSignalAnalisysActive())
{
AudioSample smp = null;
if (samples.TryDequeue(out smp) && smp != null)
{
ExtractSamples(smp);
}
Thread.Yield();
}
else
{
Thread.Sleep(1);
}
}
}
// ISampleGrabberCB Members
public int BufferCB(double sampleTime, IntPtr pBuffer, int bufferLen)
{
if (ProTONEConfig.IsSignalAnalisysActive())
{
try
{
if (sampleGrabberConfigured.WaitOne(0) && _actualAudioFormat != null)
{
const int fraction = 128;
byte[] allBytes = new byte[bufferLen];
Marshal.Copy(pBuffer, allBytes, 0, bufferLen);
int pos = 0;
double chunkTimeLen = (double)fraction / (double)_actualAudioFormat.nSamplesPerSec;
int chunkSize = fraction * _actualAudioFormat.nBlockAlign;
int i = 0;
do
{
int size = Math.Min(chunkSize, bufferLen - pos);
AudioSample smp = new AudioSample();
smp.RawSamples = new byte[size];
smp.SampleTime = sampleTime + i * chunkTimeLen;
Array.Copy(allBytes, pos, smp.RawSamples, 0, size);
samples.Enqueue(smp);
pos += size;
i++;
}while (pos < bufferLen);
}
}
catch { }
}
return(0);
}
