private void EnsureReadsExpected(MultiplexingSampleProvider mp, float[] expected)
{
float[] buffer = new float[expected.Length];
var read = mp.Read(buffer, 0, expected.Length);
Assert.AreEqual(expected.Length, read);
Assert.AreEqual(expected, buffer);
}
public void OneInOneOutShouldCopyInReadMethod()
{
var input1 = new TestSampleProvider(32000, 1);
float[] expected = new float[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
EnsureReadsExpected(mp, expected);
}
public void OneInTwoOutShouldConvertMonoToStereo()
{
var input1 = new TestSampleProvider(32000, 1);
float[] expected = new float[] { 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 2);
EnsureReadsExpected(mp, expected);
}
public void InputChannelCountIsCorrect()
{
var input1 = new TestSampleProvider(32000, 2);
var input2 = new TestSampleProvider(32000, 1);
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1, input2 }, 1);
Assert.AreEqual(3, mp.InputChannelCount);
}
public void OneInOneOutShouldCopyWaveFormat()
{
var input1 = new Mock<ISampleProvider>();
var inputWaveFormat = WaveFormat.CreateIeeeFloatWaveFormat(32000, 1);
input1.Setup(x => x.WaveFormat).Returns(inputWaveFormat);
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1.Object }, 1);
Assert.AreEqual(inputWaveFormat, mp.WaveFormat);
}
public void TwoInOneOutShouldCanBeConfiguredToSelectRightChannel()
{
var input1 = new TestSampleProvider(32000, 2);
float[] expected = new float[] { 1, 3, 5, 7, 9, 11, 13, 15, 17, 19 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
mp.ConnectInputToOutput(1, 0);
EnsureReadsExpected(mp, expected);
}
public void TwoInOneOutShouldSelectLeftChannel()
{
var input1 = new TestSampleProvider(32000, 2);
float[] expected = new float[] { 0, 2, 4, 6, 8, 10, 12, 14, 16, 18 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
EnsureReadsExpected(mp, expected);
}
public void PerformanceTest()
{
var input1 = new TestSampleProvider(32000, 1);
var input2 = new TestSampleProvider(32000, 1);
var input3 = new TestSampleProvider(32000, 1);
var input4 = new TestSampleProvider(32000, 1);
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1, input2, input3, input4 }, 4);
mp.ConnectInputToOutput(0, 3);
mp.ConnectInputToOutput(1, 2);
mp.ConnectInputToOutput(2, 1);
mp.ConnectInputToOutput(3, 0);
float[] buffer = new float[input1.WaveFormat.AverageBytesPerSecond / 4];
Stopwatch s = new Stopwatch();
var duration = s.Time(() =>
{
// read one hour worth of audio
for (int n = 0; n < 60 * 60; n++)
{
mp.Read(buffer, 0, buffer.Length);
}
});
Console.WriteLine("Performance test took {0}ms", duration);
}
public void ShouldZeroOutBufferIfInputStopsShort()
{
var input1 = new TestSampleProvider(32000, 1, 6);
float[] expected = new float[] { 0, 1, 2, 3, 4, 5, 0, 0, 0, 0 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
float[] buffer = new float[10];
for (int n = 0; n < buffer.Length; n++)
{
buffer[n] = 99;
}
var read = mp.Read(buffer, 0, buffer.Length);
Assert.AreEqual(6, read);
Assert.AreEqual(expected, buffer);
}
public void ReadReturnsCountIfOneInputHasEndedButTheOtherHasnt()
{
var input1 = new TestSampleProvider(32000, 1, 0);
var input2 = new TestSampleProvider(32000, 1);
float[] expected = new float[] { 0, 0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1, input2 }, 2);
EnsureReadsExpected(mp, expected);
}
public void ReadReturnsZeroIfSingleInputHasReachedEnd()
{
var input1 = new TestSampleProvider(32000, 1, 0);
float[] expected = new float[] { };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
float[] buffer = new float[10];
var read = mp.Read(buffer, 0, buffer.Length);
Assert.AreEqual(0, read);
}
public void ConnectInputToOutputThrowsExceptionForInvalidOutput()
{
var input1 = new TestSampleProvider(32000, 2);
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
Assert.Throws<ArgumentException>(() => mp.ConnectInputToOutput(1, 1));
}
public void HasConnectInputToOutputMethod()
{
var input1 = new TestSampleProvider(32000, 2);
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 1);
mp.ConnectInputToOutput(1, 0);
}
public void StereoInTwoOutCanBeConfiguredToSwapLeftAndRight()
{
var input1 = new TestSampleProvider(32000, 2);
float[] expected = new float[] { 1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 2);
mp.ConnectInputToOutput(0, 1);
mp.ConnectInputToOutput(1, 0);
EnsureReadsExpected(mp, expected);
}
public void TwoMonoInTwoOutShouldCreateStereo()
{
var input1 = new TestSampleProvider(32000, 1);
var input2 = new TestSampleProvider(32000, 1) { Position = 100 };
float[] expected = new float[] { 0, 100, 1, 101, 2, 102, 3, 103, 4, 104, 5, 105 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1, input2 }, 2);
EnsureReadsExpected(mp, expected);
}
public void StereoInTwoOutShouldCopyStereo()
{
var input1 = new TestSampleProvider(32000, 2);
float[] expected = new float[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 };
var mp = new MultiplexingSampleProvider(new ISampleProvider[] { input1 }, 2);
EnsureReadsExpected(mp, expected);
}
