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Unified Diff: third_party/WebKit/LayoutTests/webaudio/constructor/periodicwave.html

Issue 2102133002: Add constructors for WebAudio nodes (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 4 years, 3 months ago
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Index: third_party/WebKit/LayoutTests/webaudio/constructor/periodicwave.html
diff --git a/third_party/WebKit/LayoutTests/webaudio/constructor/periodicwave.html b/third_party/WebKit/LayoutTests/webaudio/constructor/periodicwave.html
new file mode 100644
index 0000000000000000000000000000000000000000..f74195eb55fb83192749099bb6293baae1a57104
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/webaudio/constructor/periodicwave.html
@@ -0,0 +1,288 @@
+<!doctype html>
+<html>
+ <head>
+ <title>Test Constructor: PeriodicWave</title>
+ <script src="../../resources/testharness.js"></script>
+ <script src="../../resources/testharnessreport.js"></script>
+ <script src="../resources/audio-testing.js"></script>
+ <script src="audionodeoptions.js"></script>
+ </head>
+
+ <body>
+ <script>
+ var context;
+
+ var audit = Audit.createTaskRunner();
+
+ audit.defineTask("initialize", function (taskDone) {
+ Should("context = new OfflineAudioContext(...)", function () {
+ context = new OfflineAudioContext(1, 1, 48000);
+ }).notThrow();
+
+ taskDone();
+ });
+
+ audit.defineTask("invalid constructor", function (taskDone) {
+ var node;
+ var success = true;
+
+ success = Should("new PeriodicWave()", function () {
+ node = new PeriodicWave();
+ }).throw("TypeError");
+ success = Should("new PeriodicWave(1)", function () {
+ node = new PeriodicWave(1) && success;
+ }).throw("TypeError");
+ success = Should("new PeriodicWave(context, 42)", function () {
+ node = new PeriodicWave(context, 42) && success;
+ }).throw("TypeError");
+
+ Should("Invalid constructors", success)
+ .summarize(
+ "correctly threw errors",
+ "did not throw errors in all cases");
+
+ taskDone();
+ });
+
+ audit.defineTask("default constructor", function (taskDone) {
+ var node;
+ var success = true;
+
+ success = Should("node = new PeriodicWave(context)", function () {
+ node = new PeriodicWave(context);
+ }).throw("InvalidStateError");
+
+ taskDone();
+ });
+
+ audit.defineTask("constructor with options", function (taskDone) {
+ var node;
+ var success = true;
+
+ success = Should("node = new PeriodicWave(context, {real: [1, 1]})",
+ function () {
+ node = new PeriodicWave(context, {
+ real: [1, 1]
+ });
+ }).notThrow();
+ success = Should("node instanceof PeriodicWave", node instanceof PeriodicWave)
+ .beEqualTo(true) && success;
+
+ success = Should("node = new PeriodicWave(context, {imag: [1, 1]})",
+ function () {
+ node = new PeriodicWave(context, {
+ imag: [1, 1]
+ });
+ }).notThrow();
+ success = Should("node instanceof PeriodicWave", node instanceof PeriodicWave)
+ .beEqualTo(true) && success;
+
+ success = Should("node = new PeriodicWave(context, {real: [1, 2], imag: [1, 1]})",
+ function () {
+ node = new PeriodicWave(context, {
+ real: [1, 2],
+ imag: [1, 1]
+ });
+ }).notThrow();
+ success = Should("node instanceof PeriodicWave", node instanceof PeriodicWave)
+ .beEqualTo(true) && success;
+
+ Should("new PeriodicWave() with options", success)
+ .summarize(
+ "constructed with correct attributes",
+ "was not constructed correctly");
+
+ taskDone();
+ });
+
+ // The following test that the correct waveforms are produced when various
+ // possible PeriodicWave options are used. These are needed because it's
+ // the only way to tell if the various options were correctly applied.
+
+ audit.defineTask("1: real periodicwave test", function (taskDone) {
+ waveTest({
+ real: [0, 2]
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ var normalizationFactor = 0.5;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = Math.cos(omega * k);
+ }
+ return expected;
+ },
+ 2.7106e-5).then(taskDone);
+ });
+
+ audit.defineTask("2: real periodicwave test", function (taskDone) {
+ waveTest({
+ real: [0, 2],
+ disableNormalization: false
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = Math.cos(omega * k);
+ }
+ return expected;
+ },
+ 2.7106e-5).then(taskDone);
+ }),
+
+ audit.defineTask("3: real periodicwave test", function (taskDone) {
+
+ waveTest({
+ real: [0, 2],
+ disableNormalization: true
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = 2 * Math.cos(omega * k);
+ }
+ return expected;
+ },
+ 5.4211e-5).then(taskDone);
+ });
+
+ audit.defineTask("1: imag periodicwave test", function (taskDone) {
+ waveTest({
+ imag: [0, 2]
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = Math.sin(omega * k);
+ }
+ return expected;
+ },
+ 2.7232e-5).then(taskDone);
+ });
+
+ audit.defineTask("2: imag periodicwave test", function (taskDone) {
+ waveTest({
+ imag: [0, 2],
+ disableNormalization: false
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = Math.sin(omega * k);
+ }
+ return expected;
+ },
+ 2.7232e-5).then(taskDone);
+ });
+
+ audit.defineTask("3: imag periodicwave test", function (taskDone) {
+ waveTest({
+ imag: [0, 2],
+ disableNormalization: true
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = 2 * Math.sin(omega * k);
+ }
+ return expected;
+ },
+ 5.4464e-5).then(taskDone);
+ });
+
+ audit.defineTask("1: real/imag periodicwave test", function (taskDone) {
+ waveTest({
+ real: [0, 1],
+ imag: [0, 1],
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ var normalizationFactor = Math.SQRT1_2;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = normalizationFactor * (Math.sin(omega * k) + Math.cos(omega * k));
+ }
+ return expected;
+ },
+ 3.8371e-5).then(taskDone);
+ });
+
+ audit.defineTask("2: real/imag periodicwave test", function (taskDone) {
+ waveTest({
+ real: [0, 1],
+ imag: [0, 1],
+ disableNormalization: false
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ var normalizationFactor = Math.SQRT1_2;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = normalizationFactor * (Math.sin(omega * k) + Math.cos(omega * k));
+ }
+ return expected;
+ },
+ 2.7165e-5).then(taskDone);
+ });
+
+ audit.defineTask("3: real/imag periodicwave test", function (taskDone) {
+ waveTest({
+ real: [0, 1],
+ imag: [0, 1],
+ disableNormalization: true
+ }, function (length, freq, sampleRate) {
+ var expected = new Float32Array(length);
+ var omega = 2 * Math.PI * freq / sampleRate;
+ for (var k = 0; k < length; ++k) {
+ expected[k] = Math.sin(omega * k) + Math.cos(omega * k);
+ }
+ return expected;
+ },
+ 3.8416e-5).then(taskDone);
+ });
+
+ function waveTest(waveOptions, expectedFunction, threshold) {
+ var node;
+ var success = true;
+
+ // Rather arbitrary sample rate and render length. Length doesn't have
+ // to be very long.
+ var sampleRate = 48000;
+ var renderLength = 0.25;
+ var testContext = new OfflineAudioContext(1, renderLength * sampleRate, sampleRate);
+
+ var options = {
+ periodicWave: new PeriodicWave(testContext, waveOptions)
+ };
+ node = new OscillatorNode(testContext, options);
+
+ // Create the graph
+ node.connect(testContext.destination);
+ node.start();
+
+ return testContext.startRendering().then(function (resultBuffer) {
+ var actual = resultBuffer.getChannelData(0);
+ var expected = expectedFunction(actual.length,
+ node.frequency.value,
+ testContext.sampleRate);
+ // Actual must match expected to within the (experimentally)
+ // determined threshold.
+ var message = "";
+ if (waveOptions.disableNormalization != undefined)
+ message = "disableNormalization: " + waveOptions.disableNormalization;
+ if (waveOptions.real) {
+ if (message.length > 0)
+ message += ", "
+ message += "real: [" + waveOptions.real + "]";
+ }
+ if (waveOptions.imag) {
+ if (message.length > 0)
+ message += ", "
+ message += "imag: [" + waveOptions.imag + "]";
+ }
+ Should("Oscillator with periodicWave {" + message + "}", actual)
+ .beCloseToArray(expected, threshold);
+ });
+ }
+
+ audit.runTasks();
+ </script>
+ </body>
+</html>
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