private byte[] Format2(byte[] data) { byte[] rs = format2DownSampler.inputResample(data, data.Length / 4); float[] f = Converters.bytes2floats(rs); float[] mono = Converters.stereo2mono(f); short[] shorts = Converters.floats2shorts(mono, true); int bytes = (int)(shorts.Length / 2); byte[] output = new byte[bytes]; encode2.Encode(encode2State, output, shorts, shorts.Length); return(output); }
private byte[] Format1(byte[] data) { short[] shorts = Converters.floats2shorts(Converters.bytes2floats(data), true); // DeMux into Left and Right List <short[]> lr = Converters.deMuxStereo(shorts); // CALCULATE NUMBER OF BYTES IN OUTPUT int bytes = (int)(lr[0].Length / 2); byte[] outputL = new byte[bytes]; byte[] outputR = new byte[bytes]; encode1L.Encode(encode1Lstate, outputL, lr[0], lr[0].Length); encode1R.Encode(encode1Rstate, outputR, lr[1], lr[1].Length); byte[] output = new byte[outputL.Length + outputR.Length]; Array.Copy(outputL, output, outputL.Length); Array.Copy(outputR, 0, output, outputL.Length, outputR.Length); return(output); }
/** * FORMAT 3, 4, 5 * OPUS 64kbit/s, 32 kbit/s, 16 kbit/s **/ private byte[] EncodeOpus(byte[] data_b) { float[] data = Converters.bytes2floats(data_b); // STORE UP DATA UNTIL WE HAVE ENOUGH TO ENCODE A FRAME opus_data.AddRange(Converters.floats2shorts(data, true)); // CLEAR THE COMPRESSED DATA opus_compdata.Clear(); while (opus_data.Count > 960 * 2) { // Encoding loop short[] inputAudioSamples = opus_data.GetRange(0, 960 * 2).ToArray(); opus_data.RemoveRange(0, 960 * 2); byte[] outputBuffer = new byte[1000]; int frameSize = 960; int thisPacketSize = opus_encoder.Encode(inputAudioSamples, 0, frameSize, outputBuffer, 0, outputBuffer.Length); // this throws OpusException on a failure, rather than returning a negative number byte[] truncArray = new byte[thisPacketSize]; Array.Copy(outputBuffer, truncArray, truncArray.Length); opus_compdata.AddRange(truncArray); } if (opus_compdata.Count > 0) { return(opus_compdata.ToArray()); } return(null); }