83 lines
3.5 KiB
Haxe
83 lines
3.5 KiB
Haxe
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package auratests.utils;
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import utest.Assert;
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import kha.arrays.Float32Array;
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import aura.utils.Resampler;
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import Utils;
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class TestResampler extends utest.Test {
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final sourceData = new Float32Array(4);
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final sourceSampleRate = 100;
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function setupClass() {
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sourceData[0] = 0.0;
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sourceData[1] = 1.0;
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sourceData[2] = 2.0;
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sourceData[3] = 3.0;
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}
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function test_getResampleLength() {
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Assert.equals(Std.int(sourceData.length / 2), Resampler.getResampleLength(sourceData.length, sourceSampleRate, Std.int(sourceSampleRate / 2)));
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Assert.equals(sourceData.length * 2, Resampler.getResampleLength(sourceData.length, sourceSampleRate, sourceSampleRate * 2));
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}
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function test_sourceSamplePosToTargetPos() {
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Assert.floatEquals(1.0, Resampler.sourceSamplePosToTargetPos(2.0, 100, 50));
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Assert.floatEquals(4.0, Resampler.sourceSamplePosToTargetPos(2.0, 100, 200));
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}
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function test_targetSamplePosToSourcePos() {
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Assert.floatEquals(4.0, Resampler.targetSamplePosToSourcePos(2.0, 100, 50));
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Assert.floatEquals(1.0, Resampler.targetSamplePosToSourcePos(2.0, 100, 200));
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}
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function test_sampleAtTargetPositionLerp_SamplesExactValuesAtDiscretePositions() {
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Assert.floatEquals(0.0, Resampler.sampleAtTargetPositionLerp(sourceData, 0.0, sourceSampleRate, 100));
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Assert.floatEquals(1.0, Resampler.sampleAtTargetPositionLerp(sourceData, 1.0, sourceSampleRate, 100));
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}
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function test_sampleAtTargetPositionLerp_InterpolatesLinearlyBetweenDiscreteSamples() {
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Assert.floatEquals(0.5, Resampler.sampleAtTargetPositionLerp(sourceData, 0.5, sourceSampleRate, 100));
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Assert.floatEquals(0.3, Resampler.sampleAtTargetPositionLerp(sourceData, 0.3, sourceSampleRate, 100));
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}
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function test_sampleAtTargetPositionLerp_AssertsSamplePositionNotNegative() {
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assertRaisesAssertion(() -> {
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Resampler.sampleAtTargetPositionLerp(sourceData, -1.0, sourceSampleRate, 100);
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});
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}
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function test_sampleAtTargetPositionLerp_ClampsValuesOutOfUpperDataBounds() {
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Assert.floatEquals(3.0, Resampler.sampleAtTargetPositionLerp(sourceData, 3.5, sourceSampleRate, 100));
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Assert.floatEquals(3.0, Resampler.sampleAtTargetPositionLerp(sourceData, 4.0, sourceSampleRate, 100));
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}
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function test_sampleAtTargetPositionLerp_DifferentSampleRatesUsed() {
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Assert.floatEquals(0.0, Resampler.sampleAtTargetPositionLerp(sourceData, 0.0, sourceSampleRate, Std.int(sourceSampleRate / 2)));
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Assert.floatEquals(1.0, Resampler.sampleAtTargetPositionLerp(sourceData, 0.5, sourceSampleRate, Std.int(sourceSampleRate / 2)));
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Assert.floatEquals(2.0, Resampler.sampleAtTargetPositionLerp(sourceData, 1.0, sourceSampleRate, Std.int(sourceSampleRate / 2)));
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Assert.floatEquals(0.0, Resampler.sampleAtTargetPositionLerp(sourceData, 0.0, sourceSampleRate, sourceSampleRate * 2));
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Assert.floatEquals(0.25, Resampler.sampleAtTargetPositionLerp(sourceData, 0.5, sourceSampleRate, sourceSampleRate * 2));
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Assert.floatEquals(0.5, Resampler.sampleAtTargetPositionLerp(sourceData, 1.0, sourceSampleRate, sourceSampleRate * 2));
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}
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function test_resampleFloat32Array() {
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final targetData = new Float32Array(8);
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Resampler.resampleFloat32Array(sourceData, 100, targetData, 200);
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Assert.floatEquals(0.0, targetData[0]);
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Assert.floatEquals(0.5, targetData[1]);
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Assert.floatEquals(1.0, targetData[2]);
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Assert.floatEquals(1.5, targetData[3]);
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Assert.floatEquals(2.0, targetData[4]);
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Assert.floatEquals(2.5, targetData[5]);
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Assert.floatEquals(3.0, targetData[6]);
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Assert.floatEquals(3.0, targetData[7]); // Don't extrapolate data
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}
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}
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