public static void ProcessProvider(NAudio.Wave.ISampleProvider provider, string sourceName)
{
if (provider == null)
return;
float[] buffer = new float[1024];
bool bContinue = true;
int sampleRate = provider.WaveFormat.SampleRate;
Decoders.MDC1200 mdc = new Decoders.MDC1200(sampleRate, MDCDelegate, sourceName);
//Decoders.STAR star = new Decoders.STAR(sampleRate, null, RadioLog.AudioProcessing.Decoders.STAR.star_format.star_format_1_16383);
while (bContinue)
{
int iCnt = provider.Read(buffer, 0, buffer.Length);
bContinue = iCnt > 0;
if (bContinue)
{
mdc.ProcessSamples(buffer, iCnt, true);
//star.star_decoder_process_samples(buffer, iCnt);
}
}
}
private static int[][] _readMp3(NAudio.Wave.Mp3FileReader reader)
{
// Preparing converting
int bytePerSample = reader.WaveFormat.BitsPerSample / 8 * reader.WaveFormat.Channels;
int samplesCount = (int)(reader.Length / bytePerSample);
int[][] receivedSamples = new int[reader.WaveFormat.Channels][];
for (int i = 0; i < receivedSamples.Length; i++) receivedSamples[i] = new int[samplesCount];
switch (reader.WaveFormat.BitsPerSample)
{
case 32:
#region 32 bitrate
for (int i = 0; i < samplesCount; i++)
{
byte[] read = new byte[bytePerSample];
int received = reader.Read(read, 0, bytePerSample);
if (received < bytePerSample) throw new EndOfStreamException();
for (int j = 0; j < receivedSamples.Length; j++)
{
receivedSamples[j][i] = BitConverter.ToInt32(read, j * 4);
}
}
#endregion
break;
case 24:
#region 24 bitrate
for (int i = 0; i < samplesCount; i++)
{
byte[] read = new byte[bytePerSample];
int received = reader.Read(read, 0, bytePerSample);
if (received < bytePerSample) throw new EndOfStreamException();
int n = 0;
for (int j = 0; j < receivedSamples.Length; j++)
{
receivedSamples[j][i] = (read[n] << 16) + (read[n + 1] << 8) + read[n + 2];
n += 3;
}
}
#endregion
break;
case 16:
#region 16 bitrate
for (int i = 0; i < samplesCount; i++)
{
byte[] read = new byte[bytePerSample];
int received = reader.Read(read, 0, bytePerSample);
if (received < bytePerSample) throw new EndOfStreamException();
for (int j = 0; j < receivedSamples.Length; j++)
{
receivedSamples[j][i] = BitConverter.ToInt16(read, j * 2);
}
}
#endregion
break;
case 8:
#region 8 bitrate
for (int i = 0; i < samplesCount; i++)
{
byte[] read = new byte[bytePerSample];
int received = reader.Read(read, 0, bytePerSample);
if (received < bytePerSample) throw new EndOfStreamException();
for (int j = 0; j < receivedSamples.Length; j++)
{
receivedSamples[j][i] = BitConverter.ToInt32(read, j);
}
}
#endregion
break;
default:
throw new NotImplementedException("This file format is not supported");
}
return receivedSamples;
}
