audioparam-setValueAtTime.html

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This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audioparam-interface/audioparam-setValueAtTime.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>

      audioparam-setValueAtTime.html

    </title>

    <script src="/resources/testharness.js"></script>

    <script src="/resources/testharnessreport.js"></script>

    <script src="/webaudio/resources/audit-util.js"></script>

    <script src="/webaudio/resources/audit.js"></script>

    <script src="/webaudio/resources/audioparam-testing.js"></script>

  </head>

  <body>

    <script id="layout-test-code">

      let audit = Audit.createTaskRunner();

      // Play a long DC signal out through an AudioGainNode, and call

      // setValueAtTime() at regular intervals to set the value for the duration

      // of the interval.  Each time interval has different value so that there

      // is a discontinuity at each time interval boundary.  The discontinuity

      // is for testing timing.

      // Number of tests to run.

      let numberOfTests = 100;

      // Max allowed difference between the rendered data and the expected

      // result.

      let maxAllowedError = 6e-8;

      // Set the gain node value to the specified value at the specified time.

      function setValue(value, time) {

        gainNode.gain.setValueAtTime(value, time);

      // For testing setValueAtTime(), we don't need to do anything for

      // automation. because the value at the beginning of the interval is set

      // by setValue and it remains constant for the duration, which is what we

      // want.

      function automation(value, startTime, endTime) {

        // Do nothing.

      audit.define(

            label: 'test',

            description: 'AudioParam setValueAtTime() functionality.'

},

          function(task, should) {

            createAudioGraphAndTest(

                task, should, numberOfTests, 1, setValue, automation,

                'setValueAtTime()', maxAllowedError, createConstantArray);

});

      audit.run();

    </script>

  </body>

</html>