public BigArray <float> GenerateMissingFrame(int frequency)
{
int frameSize = frameSizes[frequency * 1000];
codecWrapper codec = encoders[frequency * 1000];
short[] decodedFrame16Bit = TempArray <short> .Obtain(frameSize * 4);
int decoded = codec.decoder.Decode(null, 0, 0, decodedFrame16Bit, 0, true);
if (tempOutputArray.Length != decoded)
{
tempOutputArray.Resize(decoded);
}
for (int i = 0; i < decoded; i++)
{
float val = (float)decodedFrame16Bit[i];
val /= short.MaxValue;
tempOutputArray[i] = val;
}
TempArray <short> .Release(decodedFrame16Bit);
return(tempOutputArray);
}
public BigArray <float> DecodeFrame(VoicePacketWrapper data)
{
int frameSize = frameSizes[data.Frequency * 1000];
codecWrapper codec = encoders[data.Frequency * 1000];
short[] decodedFrame16Bit = TempArray <short> .Obtain(frameSize * 4);
int decoded = codec.decoder.Decode(data.RawData, 0, data.RawData.Length, decodedFrame16Bit, 0, false);
if (tempOutputArray.Length != decoded)
{
tempOutputArray.Resize(decoded);
}
for (int i = 0; i < decoded; i++)
{
float val = (float)decodedFrame16Bit[i];
val /= short.MaxValue;
tempOutputArray[i] = val;
}
TempArray <short> .Release(decodedFrame16Bit);
return(tempOutputArray);
}
public VoicePacketWrapper?GetNextEncodedFrame(int frequency)
{
int frameSize = frameSizes[frequency];
codecWrapper codec = encoders[frequency];
float[] chunk = TempArray <float> .Obtain(frameSize);
bool chunkAvailable = chunkBuffer.RetrieveChunk(chunk);
if (!chunkAvailable)
{
TempArray <float> .Release(chunk);
return(null);
}
tempPacketWrapper = new VoicePacketWrapper();
tempPacketWrapper.Frequency = (byte)(frequency / 1000);
short[] audio16bit = TempArray <short> .Obtain(frameSize);
for (int i = 0; i < frameSize; i++)
{
float val = chunk[i] * short.MaxValue;
audio16bit[i] = (short)val;
}
TempArray <float> .Release(chunk);
byte[] buffer = TempArray <byte> .Obtain(audio16bit.Length * 2);
int encoded = codec.encoder.Encode(audio16bit, 0, frameSize, buffer, 0, buffer.Length);
TempArray <short> .Release(audio16bit);
tempPacketWrapper.RawData = new byte[encoded];
System.Buffer.BlockCopy(buffer, 0, tempPacketWrapper.RawData, 0, encoded);
TempArray <byte> .Release(buffer);
return(tempPacketWrapper);
}
