public void MakesSampleChunks_OutOfBoundsChunkThrowsAnErrorEdgeCase()
{
var sampleRate = 44100;
var samples = new float[sampleRate * 10];
var random = new Random();
for (var i = 0; i < samples.Length; i++)
{
samples[i] = (float)random.NextDouble();
}
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
var exceptionThrown = false;
try
{
samplesManager.GetSamplesAtPositionGivenWindowInMs(10, 1000);
}
catch (Exception)
{
exceptionThrown = true;
}
Assert.IsTrue(exceptionThrown);
}
public void MakesSampleChunks_LastChunkEdgeCase()
{
var sampleRate = 44100;
var samples = new float[sampleRate * 10];
var random = new Random();
for (var i = 0; i < samples.Length; i++)
{
samples[i] = (float)random.NextDouble();
}
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
var windowInMs = 1000;
var expectedNewSize = Chords.Profiling.LongAudioProfiling.GetNumberOfSamplesGivenWindowInMs(sampleRate, windowInMs);
var position = 9;
var isThereAnIncompleteChunk = samples.Length % expectedNewSize != 0;
var(sampleRateReturned, samplesReturned) =
samplesManager.GetSamplesAtPositionGivenWindowInMs(position, windowInMs);
Assert.IsFalse(isThereAnIncompleteChunk);
Assert.AreEqual(sampleRateReturned, sampleRate);
Assert.AreEqual(samplesReturned.Length, expectedNewSize);
AssertArrayEqualOnOffset(samplesReturned, samples, position * expectedNewSize);
}
public void MakesSampleChunks_NonDivisible()
{
var(sampleRate, samples) = Chords.Profiling.Profiling.GetSamples("./Resources/d.wav");
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
var windowInMs = 437;
var expectedNewSize = sampleRate * windowInMs / 1000;
var position = 4;
var(sampleRateReturned, samplesReturned) = samplesManager.GetSamplesAtPositionGivenWindowInMs(position, windowInMs);
Assert.AreEqual(sampleRateReturned, sampleRate);
Assert.AreEqual(samplesReturned.Length, expectedNewSize);
AssertArrayEqualOnOffset(samplesReturned, samples, position * expectedNewSize);
}
public void MakesSampleChunks_HappyPath()
{
var(sampleRate, samples) = Chords.Profiling.Profiling.GetSamples("./Resources/d.wav");
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
Assert.IsNotNull(samplesManager);
var windowInMs = 500;
var expectedNewSize = sampleRate / 2;
var position = 1;
var(sampleRateReturned, samplesReturned) = samplesManager.GetSamplesAtPositionGivenWindowInMs(position, windowInMs);
Assert.AreEqual(sampleRateReturned, sampleRate);
Assert.AreEqual(samplesReturned.Length, expectedNewSize);
AssertArrayEqualOnOffset(samplesReturned, samples, position * expectedNewSize);
}
public void MakesSampleChunks_MinumumWindowInMs()
{
var(sampleRate, samples) = Chords.Profiling.Profiling.GetSamples("./Resources/d.wav");
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
var windowInMs = 1;
var expectedNewSize = Chords.Profiling.LongAudioProfiling.GetNumberOfSamplesGivenWindowInMs(sampleRate, windowInMs);
var isThereAnIncompleteChunk = samples.Length % expectedNewSize != 0;
var(sampleRateReturned, samplesReturned) =
samplesManager.GetSamplesAtPositionGivenWindowInMs(123, windowInMs);
Assert.IsTrue(isThereAnIncompleteChunk);
Assert.AreEqual(sampleRateReturned, sampleRate);
Assert.AreEqual(samplesReturned.Length, expectedNewSize);
AssertArrayEqualOnOffset(samplesReturned, samples, 123 * expectedNewSize);
}
public void MakesSampleChunks_LastCompleteChunk()
{
var(sampleRate, samples) = Chords.Profiling.Profiling.GetSamples("./Resources/d.wav");
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
Assert.IsNotNull(samplesManager);
var windowInMs = 617;
var expectedNewSize = Chords.Profiling.LongAudioProfiling.GetNumberOfSamplesGivenWindowInMs(sampleRate, windowInMs);
var numberOfCompleteChunks = samples.Length / expectedNewSize;
var position = numberOfCompleteChunks - 1;
var(sampleRateReturned, samplesReturned) =
samplesManager.GetSamplesAtPositionGivenWindowInMs(position, windowInMs);
Assert.AreEqual(sampleRateReturned, sampleRate);
Assert.AreEqual(samplesReturned.Length, expectedNewSize);
AssertArrayEqualOnOffset(samplesReturned, samples, position * expectedNewSize);
}
public void MakesSampleChunks_OutOfBoundsChunkThrowsAnError()
{
var(sampleRate, samples) = Chords.Profiling.Profiling.GetSamples("./Resources/d.wav");
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
Assert.IsNotNull(samplesManager);
var exceptionThrown = false;
try
{
samplesManager.GetSamplesAtPositionGivenWindowInMs(1000, 500);
} catch (Exception)
{
exceptionThrown = true;
}
Assert.IsTrue(exceptionThrown);
}
public void MakesSampleChunks_WindowBiggerThanFile()
{
var(sampleRate, samples) = Chords.Profiling.Profiling.GetSamples("./Resources/d.wav");
var samplesManager = new Chords.Profiling.SamplesManager(sampleRate, samples);
Assert.IsNotNull(samplesManager);
var windowInMs = 617000000;
var expectedNewSize = Chords.Profiling.LongAudioProfiling.GetNumberOfSamplesGivenWindowInMs(sampleRate, windowInMs);
var numberOfCompleteChunks = samples.Length / expectedNewSize;
var isThereAnIncompleteChunk = samples.Length % expectedNewSize != 0;
var(sampleRateReturned, samplesReturned) =
samplesManager.GetSamplesAtPositionGivenWindowInMs(numberOfCompleteChunks, windowInMs);
Assert.AreEqual(numberOfCompleteChunks, 0);
Assert.IsTrue(isThereAnIncompleteChunk);
Assert.AreEqual(sampleRateReturned, sampleRate);
Assert.AreEqual(samplesReturned.Length, samples.Length);
AssertArrayEqualOnOffset(samplesReturned, samples, 0);
}
