private byte[] SpeexEncode(short[] input, BandMode mode)
{
NSpeex.SpeexEncoder speexEnc = null;
int byteLen = 320;
switch (mode)
{
case BandMode.Narrow:
speexEnc = m_narrow_enc;
byteLen = 320;
break;
case BandMode.Wide:
speexEnc = m_wide_enc;
byteLen = 640;
break;
case BandMode.UltraWide:
speexEnc = m_ultrawide_enc;
byteLen = 1280;
break;
}
byte[] encoded = USpeakPoolUtils.GetByte(byteLen + 4);
int length = speexEnc.Encode(input, 0, input.Length, encoded, 4, encoded.Length);
// first 4 bytes contains length
byte[] len_bytes = BitConverter.GetBytes(length);
System.Array.Copy(len_bytes, encoded, 4);
return(encoded);
}
public codecWrapper(NSpeex.BandMode mode, bool vbr)
{
encoder = new NSpeex.SpeexEncoder(mode);
decoder = new NSpeex.SpeexDecoder(mode, false);
encoder.VBR = vbr;
encoder.Quality = 5;
}
private byte[] EncodeAudio(short[] rawData)
{
var encoder = new NSpeex.SpeexEncoder(NSpeex.BandMode.Wide);
encoder.Quality = 1;
var encodedData = new List <byte[]>();
var inDataSize = rawData.Length;
inDataSize = inDataSize + inDataSize % encoder.FrameSize;
var inData = new short[inDataSize];
System.Array.Copy(rawData, inData, rawData.Length);
var encodingFrameSize = encoder.FrameSize;
var encodedBuffer = new byte[1024];
for (var offset = 0; offset + encodingFrameSize < inDataSize; offset += encodingFrameSize)
{
var encodedBytes = encoder.Encode(inData, offset, encodingFrameSize, encodedBuffer, 0, encodingFrameSize);
var encodedFrame = new byte[encodedBytes];
System.Array.Copy(encodedBuffer, 0, encodedFrame, 0, encodedBytes);
encodedData.Add(encodedFrame);
}
var ms = new MemoryStream();
var countBits = BitConverter.GetBytes((Int32)encodedData.Count);
ms.Write(countBits, 0, countBits.Length);
for (int i = 0; i < encodedData.Count; i++)
{
var d = encodedData[i];
var bc = BitConverter.GetBytes((Int32)d.Length);
ms.Write(bc, 0, bc.Length);
}
for (int i = 0; i < encodedData.Count; i++)
{
var d = encodedData[i];
ms.Write(d, 0, d.Length);
}
return(ms.ToArray());
}
public SpeexCodex(BandMode mode)
{
this.mode = mode;
encoder = new NSpeex.SpeexEncoder(SpeedxMode);
decoder = new NSpeex.SpeexDecoder(SpeedxMode, false);
encoder.VBR = true;
encoder.Quality = 4;
dataSize = encoder.FrameSize * (mode == BandMode.Narrow ? 8 : mode == BandMode.Wide ? 4 : 2);
encodingBuffer = new short[dataSize];
encodedBuffer = new byte[dataSize];
decodeBuffer = new short[dataSize];
decodedBuffer = new float[dataSize];
int frequency = AudioUtils.GetFrequency(mode);
var time = frequency / (float)dataSize;
UnityEngine.Debug.Log("SpeedCodex created mode:" + mode + " dataSize:" + dataSize + " time:" + time);
}
