Example #1
0
        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);
        }
Example #2
0
        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);
        }
Example #3
0
        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);
        }
Example #4
0
        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);
        }
Example #5
0
        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);
        }
Example #6
0
        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);
        }
Example #7
0
        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);
        }
Example #8
0
        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);
        }