testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-time-limits.html
author Dana Keeler <dkeeler@mozilla.com>
Sat, 12 Jul 2025 15:57:37 +0000 (15 hours ago)
changeset 796342 3a804f83c6b282c3c6b6ed9b67bacbc277bfb300
parent 426088 e6ea2b642367d3f74e7df8d577ace067172e7953
permissions -rw-r--r--
Bug 1976779 - rsclientcerts: make each backend responsible for rate-limiting calls to find_objects r=jschanck Before this patch, `rsclientcerts::manager` would rate-limit calls to `find_objects` to once every 3 seconds because the underlying operation can be time-consuming (in particular, on macOS and Windows, if there are many certificates/keys available). On Android, keys aren't available until the user selects one, which means that if a call to `find_objects` happened before the selection prompt was shown (which is what happens) and the user chose one in less than 3 seconds, the backend wouldn't search again, thus making it seem like no keys were available, which would cause Firefox to not send a client certificate. This patch makes each backend implementation responsible for this rate-limiting, because only they know if it's appropriate to do so (in particular, on Android, `find_objects` doesn't have the same performance concern as on macOS and Windows because rather than searching for certificates and keys, it asks `ClientAuthCertificateManager` for the cached list of certificates and keys that have already been approved for use by the user). Differential Revision: https://phabricator.services.mozilla.com/D257065
<!DOCTYPE html>
<html>
  <head>
    <title>
      Test Scheduled Sources with Huge Time Limits
    </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 sampleRate = 48000;
      let renderFrames = 1000;

      let audit = Audit.createTaskRunner();

      audit.define('buffersource: huge stop time', (task, should) => {
        // We only need to generate a small number of frames for this test.
        let context = new OfflineAudioContext(1, renderFrames, sampleRate);
        let src = context.createBufferSource();

        // Constant source of amplitude 1, looping.
        src.buffer = createConstantBuffer(context, 1, 1);
        src.loop = true;

        // Create the graph and go!
        let endTime = 1e300;
        src.connect(context.destination);
        src.start();
        src.stop(endTime);

        context.startRendering()
            .then(function(resultBuffer) {
              let result = resultBuffer.getChannelData(0);
              should(
                  result, 'Output from AudioBufferSource.stop(' + endTime + ')')
                  .beConstantValueOf(1);
            })
            .then(() => task.done());
      });


      audit.define('oscillator: huge stop time', (task, should) => {
        // We only need to generate a small number of frames for this test.
        let context = new OfflineAudioContext(1, renderFrames, sampleRate);
        let src = context.createOscillator();

        // Create the graph and go!
        let endTime = 1e300;
        src.connect(context.destination);
        src.start();
        src.stop(endTime);

        context.startRendering()
            .then(function(resultBuffer) {
              let result = resultBuffer.getChannelData(0);
              // The buffer should not be empty.  Just find the max and verify
              // that it's not zero.
              let max = Math.max.apply(null, result);
              should(
                  max, 'Peak amplitude from oscillator.stop(' + endTime + ')')
                  .beGreaterThan(0);
            })
            .then(() => task.done());
      });


      audit.run();
    </script>
  </body>
</html>