| Index: third_party/WebKit/LayoutTests/webaudio/Oscillator/oscillator-late-start.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/Oscillator/oscillator-late-start.html b/third_party/WebKit/LayoutTests/webaudio/Oscillator/oscillator-late-start.html
|
| index 6d757bcadf7cec02b7fb3bc87f3718316e646e69..f73424b11b619a4b4c3af06a6932f37137dd505a 100644
|
| --- a/third_party/WebKit/LayoutTests/webaudio/Oscillator/oscillator-late-start.html
|
| +++ b/third_party/WebKit/LayoutTests/webaudio/Oscillator/oscillator-late-start.html
|
| @@ -6,23 +6,79 @@
|
| <script src="../../resources/testharnessreport.js"></script>
|
| <script src="../resources/audit-util.js"></script>
|
| <script src="../resources/audit.js"></script>
|
| - <script src="../resources/late-start-testing.js"></script>
|
| </head>
|
|
|
| <body>
|
| <script>
|
| - var audit = Audit.createTaskRunner();
|
| + let audit = Audit.createTaskRunner();
|
|
|
| - var sampleRate = 44100;
|
| + let sampleRate = 44100;
|
| + let renderLength = 1;
|
|
|
| - var renderLength = 1;
|
| -
|
| - var context = new OfflineAudioContext(1, sampleRate * renderLength, sampleRate);
|
| - var osc = context.createOscillator();
|
| + let context;
|
| + let node;
|
|
|
| - // Test the oscillator node is rendered correctly when the start time of start()
|
| - // call is in the past in terms of the context time.
|
| - runLateStartTest(audit, context, osc);
|
| + // Test the oscillator node is rendered correctly when the start time of
|
| + // start() call is in the past in terms of the context time.
|
| + audit.define('initialize', (task, should) => {
|
| + should(
|
| + () => context =
|
| + new OfflineAudioContext(1, sampleRate * renderLength, sampleRate),
|
| + 'Creating offline context for testing')
|
| + .notThrow();
|
| + should(() => {
|
| + // Set up a dummy signal path to keep the audio context running and
|
| + // spend processing time before calling start(0).
|
| + let osc = context.createOscillator();
|
| + let silent = context.createGain();
|
| +
|
| + osc.connect(silent);
|
| + silent.connect(context.destination);
|
| + silent.gain.setValueAtTime(0.0, 0);
|
| + osc.start();
|
| +
|
| + node = context.createOscillator();
|
| + node.connect(context.destination);
|
| + }, 'Creating graph for testing').notThrow();
|
| + task.done();
|
| + });
|
| +
|
| + audit.define('test-late-start', (task, should) => {
|
| + // The node's start time will be clamped to the render quantum boundary
|
| + // >0.1 sec. Thus the rendered buffer will have non-zero frames.
|
| + // See issue: crbug.com/462167
|
| + let suspendTime = 0.1;
|
| + let suspendFrame = 128 * Math.floor(0.1 * context.sampleRate / 128);
|
| +
|
| + context.suspend(suspendTime).then(() => {
|
| + node.start(0);
|
| + context.resume();
|
| + });
|
| +
|
| + // Start rendering and verify result: this verifies if 1) the rendered
|
| + // buffer contains at least one non-zero value and 2) the non-zero value
|
| + // is found later than the first output sample.
|
| + context.startRendering()
|
| + .then(buffer => {
|
| + let channelData = buffer.getChannelData(0);
|
| + let nonZeroValueIndex = channelData.findIndex(x => x != 0);
|
| +
|
| + should(
|
| + nonZeroValueIndex,
|
| + 'The index (' + nonZeroValueIndex +
|
| + ') of first non-zero output value')
|
| + .beGreaterThanOrEqualTo(suspendFrame);
|
| +
|
| + should(
|
| + channelData.slice(0, suspendFrame),
|
| + 'Output[0:' + (suspendFrame - 1) + ']')
|
| + .beConstantValueOf(0);
|
| + })
|
| + .then(() => task.done());
|
| + ;
|
| + });
|
| +
|
| + audit.run();
|
| </script>
|
| </body>
|
|
|
|
|
Chromium Code Reviews
Issue 2810413004:
Move late-start-testing.js to only user (Closed)
