private void HandleAudio(WaveInEventArgs args)
{
if (IsRecording && !isDisposed)
{
byte[] toEncode = args.Buffer;
int length = args.BytesRecorded;
if (length > 0)
{
if (waveIn.WaveFormat != codec.RecordFormat)
{
if (waveIn.WaveFormat.Encoding == WaveFormatEncoding.IeeeFloat)
{
var floatSamples = InputResampler.ReadIeeeWav(toEncode, args.BytesRecorded, waveIn.WaveFormat);
foreach (var sample in floatSamples)
{
aggregator.Add(sample);
}
toEncode = InputResampler.Resample(floatSamples, floatSamples.Length, waveIn.WaveFormat, codec.RecordFormat, out length);
}
else
{
for (int i = 0; i < args.BytesRecorded + 1; i += 2)
{
aggregator.Add(InputResampler.PCMtoFloat(toEncode, i / 2));
}
toEncode = InputResampler.Resample(toEncode, args.BytesRecorded, waveIn.WaveFormat, codec.RecordFormat, out length);
}
}
if (toEncode == null)
{
Console.WriteLine("Encode Error: Disabling input. Please choose another record format and report this bug..");
StopRecording();
}
else
{
if (CoughScalar < 1.0f)
{
InputResampler.ScalePCM16VolumeDb(ref toEncode, length, CoughScalar);
}
byte[] encoded = codec.Encode(toEncode, length);
if (encoded.Length > 0 && NetworkWPF.Client != null)
{
NetworkWPF.Client.SendAudio(codec.CodecID, encoded, encoded.Length);
}
}
}
}
}
public void MonoRateResampleTest()
{
int samples = 1000;
byte[] stream = CreateTestStream(samples, 0);
WaveFormat sourceFormat = new WaveFormat(44100, 1);
WaveFormat destFormat = new WaveFormat(8000, 1);
int sourceLength = stream.Length;
int expectedResultLen = GetExpectedConversionLength(sourceLength, sourceFormat, destFormat);
int resultLength;
byte[] resultStream = InputResampler.Resample(stream, sourceLength, sourceFormat, destFormat, out resultLength);
Assert.AreEqual(expectedResultLen, resultLength);
}
public void LongerSourceStereoResampleTest()
{
int samples = 500;
byte[] testStream = CreateStereoSampleStream(samples);
byte[] stream = new byte[testStream.Length + 1000];
testStream.CopyTo(stream, 0);
WaveFormat sourceFormat = new WaveFormat(48000, 2);
WaveFormat destFormat = new WaveFormat(44100, 1);
int sourceLength = testStream.Length;
int expectedResultLen = GetExpectedConversionLength(sourceLength, sourceFormat, destFormat);
int resultLength;
byte[] resultStream = InputResampler.Resample(stream, sourceLength, sourceFormat, destFormat, out resultLength);
Assert.AreEqual(expectedResultLen, resultLength);
}
public void ChannelCountChangeTest()
{
int samples = 1000;
byte[] left = CreateTestStream(samples, 0);
byte[] right = CreateTestStream(samples, 1);
byte[] stream = Multiplex(samples, left, right);
WaveFormat sourceFormat = new WaveFormat(8000, 2);
WaveFormat destFormat = new WaveFormat(8000, 1);
int sourceLength = stream.Length;
int expectedResultLen = sourceLength / 2;
int resultLength;
byte[] resultStream = InputResampler.Resample(stream, sourceLength, sourceFormat, destFormat, out resultLength);
Assert.AreEqual(expectedResultLen, resultLength);
for (int i = 0; i < samples; i++)
{
int leftValue = left[i * 2 + 1] << 8 | left[i * 2];
int rightValue = right[i * 2 + 1] << 8 | right[i * 2];
int resultValue = resultStream[i * 2 + 1] << 8 | resultStream[i * 2];
if (leftValue + rightValue < short.MaxValue)
{
Assert.AreEqual(leftValue + rightValue, resultValue);
}
else
{
Assert.Inconclusive("Clipping occurred.");
}
}
}