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Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html')
-rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html new file mode 100644 index 0000000000..eca15dedfa --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audionode-interface/audionode-connect-order.html @@ -0,0 +1,77 @@ +<!DOCTYPE html> +<html> + <head> + <title> + audionode-connect-order.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> + </head> + <body> + <script id="layout-test-code"> + let audit = Audit.createTaskRunner(); + let sampleRate = 44100.0; + let renderLengthSeconds = 0.125; + let delayTimeSeconds = 0.1; + + function createSinWaveBuffer(context, lengthInSeconds, frequency) { + let audioBuffer = + context.createBuffer(1, lengthInSeconds * sampleRate, sampleRate); + + let n = audioBuffer.length; + let data = audioBuffer.getChannelData(0); + + for (let i = 0; i < n; ++i) { + data[i] = Math.sin(frequency * 2 * Math.PI * i / sampleRate); + } + + return audioBuffer; + } + + audit.define( + { + label: 'Test connections', + description: + 'AudioNode connection order doesn\'t trigger assertion errors' + }, + function(task, should) { + // Create offline audio context. + let context = new OfflineAudioContext( + 1, sampleRate * renderLengthSeconds, sampleRate); + let toneBuffer = + createSinWaveBuffer(context, renderLengthSeconds, 880); + + let bufferSource = context.createBufferSource(); + bufferSource.buffer = toneBuffer; + bufferSource.connect(context.destination); + + let delay = context.createDelay(); + delay.delayTime.value = delayTimeSeconds; + + // We connect delay node to gain node before anything is connected + // to delay node itself. We do this because we try to trigger the + // ASSERT which might be fired due to AudioNode connection order, + // especially when gain node and delay node is involved e.g. + // https://bugs.webkit.org/show_bug.cgi?id=76685. + + should(() => { + let gain = context.createGain(); + gain.connect(context.destination); + delay.connect(gain); + }, 'Connecting nodes').notThrow(); + + bufferSource.start(0); + + let promise = context.startRendering(); + + should(promise, 'OfflineContext startRendering()') + .beResolved() + .then(task.done.bind(task)); + }); + + audit.run(); + </script> + </body> +</html> |