| Index: third_party/WebKit/LayoutTests/webaudio/AudioParam/audioparam-automation-clamping.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/AudioParam/audioparam-automation-clamping.html b/third_party/WebKit/LayoutTests/webaudio/AudioParam/audioparam-automation-clamping.html
|
| index d49172e6c3fba26a9abd898b685e261f3c8a9628..8dfcddac132ba42429d60e9f0b586f377a6701c6 100644
|
| --- a/third_party/WebKit/LayoutTests/webaudio/AudioParam/audioparam-automation-clamping.html
|
| +++ b/third_party/WebKit/LayoutTests/webaudio/AudioParam/audioparam-automation-clamping.html
|
| @@ -1,97 +1,102 @@
|
| -<!doctype html>
|
| +<!DOCTYPE html>
|
| <html>
|
| <head>
|
| + <title>
|
| + Test Clamping of Automations
|
| + </title>
|
| <script src="../../resources/testharness.js"></script>
|
| - <script src="../../resources/testharnessreport.js"></script>
|
| + <script src="../../resources/testharnessreport.js"></script>
|
| <script src="../resources/audit-util.js"></script>
|
| <script src="../resources/audit.js"></script>
|
| - <title>Test Clamping of Automations</title>
|
| </head>
|
| -
|
| <body>
|
| - <script>
|
| -
|
| - // Some arbitrary sample rate for the offline context.
|
| - var sampleRate = 48000;
|
| + <script id="layout-test-code">
|
| + // Some arbitrary sample rate for the offline context.
|
| + let sampleRate = 48000;
|
|
|
| // Duration of test (fairly arbitrary).
|
| - var renderDuration = 1;
|
| - var renderFrames = renderDuration * sampleRate;
|
| + let renderDuration = 1;
|
| + let renderFrames = renderDuration * sampleRate;
|
| +
|
| + let audit = Audit.createTaskRunner();
|
|
|
| - var audit = Audit.createTaskRunner();
|
| -
|
| - audit.define("clamp", (task, should) => {
|
| + audit.define('clamp', (task, should) => {
|
| // Test clamping of automations. Most AudioParam limits are essentially
|
| // unbounded, so clamping doesn't happen. For most other AudioParams,
|
| // the behavior is sufficiently complicated with complicated outputs
|
| // that testing them is hard. However the output behavior of the
|
| // frequency parameter for a BiquadFilter is relatively simple. Use
|
| // that as the test.
|
| - var context = new OfflineAudioContext(1, renderFrames, sampleRate);
|
| + let context = new OfflineAudioContext(1, renderFrames, sampleRate);
|
|
|
| - var source = context.createBufferSource();
|
| + let source = context.createBufferSource();
|
| source.buffer = createConstantBuffer(context, 1, 1);
|
| source.loop = true;
|
|
|
| - var filter = context.createBiquadFilter();
|
| - filter.type = "lowpass";
|
| + let filter = context.createBiquadFilter();
|
| + filter.type = 'lowpass';
|
|
|
| source.connect(filter);
|
| filter.connect(context.destination);
|
|
|
| - var V0 = 880;
|
| - var T0 = 0;
|
| + let V0 = 880;
|
| + let T0 = 0;
|
| filter.frequency.setValueAtTime(V0, T0);
|
|
|
| - var V1 = -1000;
|
| - var T1 = renderDuration / 4;
|
| + let V1 = -1000;
|
| + let T1 = renderDuration / 4;
|
| filter.frequency.linearRampToValueAtTime(V1, T1);
|
|
|
| - var V2 = 880;
|
| - var T2 = renderDuration / 2;
|
| + let V2 = 880;
|
| + let T2 = renderDuration / 2;
|
| filter.frequency.linearRampToValueAtTime(V2, T2);
|
|
|
| source.start();
|
|
|
| - context.startRendering().then(function (buffer) {
|
| - var result = buffer.getChannelData(0);
|
| -
|
| - // When the cutoff frequency of a lowpass filter is 0, nothing gets
|
| - // through. Hence the output of the filter between the clamping
|
| - // period should be exactly zero. This tests passes if the output is 0
|
| - // during the expected range.
|
| - //
|
| - // Compute when the frequency value of the biquad goes to 0. In
|
| - // general, t = (T0*V1 -T1*V0)/(V1-V0) (using the notation from the
|
| - // spec.)
|
| - var clampStartTime = solveLinearRamp(0, V0, T0, V1, T1);
|
| - var clampEndTime = solveLinearRamp(0, V1, T1, V2, T2);
|
| -
|
| - var clampStartFrame = Math.ceil(clampStartTime * sampleRate);
|
| - var clampEndFrame = Math.floor(clampEndTime * sampleRate);
|
| -
|
| - var clampedSignal = result.slice(clampStartFrame, clampEndFrame + 1);
|
| - var expectedSignal = new Float32Array(clampedSignal.length);
|
| - expectedSignal.fill(0);
|
| -
|
| - // Output should be zero.
|
| - should(clampedSignal,
|
| - "Clamped signal in frame range [" + clampStartFrame + ", " +
|
| - clampEndFrame + "]")
|
| - .beCloseToArray(expectedSignal, 0);
|
| -
|
| - // Find the actual clamp range based on the output values.
|
| - var actualClampStart = result.findIndex(x => x === 0);
|
| - var actualClampEnd = actualClampStart + result.slice(actualClampStart).findIndex(
|
| - x => x != 0);
|
| -
|
| - // Verify that the expected clamping range is a subset of the actual range.
|
| - should(actualClampStart, "Actual Clamp start")
|
| - .beLessThanOrEqualTo(clampStartFrame);
|
| - should(actualClampEnd, "Actual Clamp end")
|
| - .beGreaterThanOrEqualTo(clampEndFrame);
|
| -
|
| - }).then(() => task.done());
|
| + context.startRendering()
|
| + .then(function(buffer) {
|
| + let result = buffer.getChannelData(0);
|
| +
|
| + // When the cutoff frequency of a lowpass filter is 0, nothing
|
| + // gets through. Hence the output of the filter between the
|
| + // clamping period should be exactly zero. This tests passes if
|
| + // the output is 0 during the expected range.
|
| + //
|
| + // Compute when the frequency value of the biquad goes to 0. In
|
| + // general, t = (T0*V1 -T1*V0)/(V1-V0) (using the notation from
|
| + // the spec.)
|
| + let clampStartTime = solveLinearRamp(0, V0, T0, V1, T1);
|
| + let clampEndTime = solveLinearRamp(0, V1, T1, V2, T2);
|
| +
|
| + let clampStartFrame = Math.ceil(clampStartTime * sampleRate);
|
| + let clampEndFrame = Math.floor(clampEndTime * sampleRate);
|
| +
|
| + let clampedSignal =
|
| + result.slice(clampStartFrame, clampEndFrame + 1);
|
| + let expectedSignal = new Float32Array(clampedSignal.length);
|
| + expectedSignal.fill(0);
|
| +
|
| + // Output should be zero.
|
| + should(
|
| + clampedSignal,
|
| + 'Clamped signal in frame range [' + clampStartFrame + ', ' +
|
| + clampEndFrame + ']')
|
| + .beCloseToArray(expectedSignal, 0);
|
| +
|
| + // Find the actual clamp range based on the output values.
|
| + let actualClampStart = result.findIndex(x => x === 0);
|
| + let actualClampEnd = actualClampStart +
|
| + result.slice(actualClampStart).findIndex(x => x != 0);
|
| +
|
| + // Verify that the expected clamping range is a subset of the
|
| + // actual range.
|
| + should(actualClampStart, 'Actual Clamp start')
|
| + .beLessThanOrEqualTo(clampStartFrame);
|
| + should(actualClampEnd, 'Actual Clamp end')
|
| + .beGreaterThanOrEqualTo(clampEndFrame);
|
| +
|
| + })
|
| + .then(() => task.done());
|
| });
|
|
|
| audit.run();
|
|
|
Chromium Code Reviews
Issue 2895963003:
Apply layout-test-tidy to LayoutTests/webaudio (Closed)
