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Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-oscillatornode-interface/detune-overflow.html')
-rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-oscillatornode-interface/detune-overflow.html | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-oscillatornode-interface/detune-overflow.html b/testing/web-platform/tests/webaudio/the-audio-api/the-oscillatornode-interface/detune-overflow.html new file mode 100644 index 0000000000..28c28bc1db --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-oscillatornode-interface/detune-overflow.html @@ -0,0 +1,41 @@ +<!doctype html> +<html> + <head> + <title>Test Osc.detune Overflow</title> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="/webaudio/resources/audit.js"></script> + <script src="/webaudio/resources/audit-util.js"></script> + </head> + + <body> + <script> + const sampleRate = 44100; + const renderLengthFrames = RENDER_QUANTUM_FRAMES; + + let audit = Audit.createTaskRunner(); + + audit.define('detune overflow', async (task, should) => { + let context = + new OfflineAudioContext(1, renderLengthFrames, sampleRate); + + // This value of frequency and detune results in a computed frequency of + // 440*2^(153600/1200) = 1.497e41. The frequency needs to be clamped to + // Nyquist. But a sine wave at Nyquist frequency is all zeroes. Verify + // the output is 0. + let osc = new OscillatorNode(context, {frequency: 440, detune: 153600}); + + osc.connect(context.destination); + + let buffer = await context.startRendering(); + let output = buffer.getChannelData(0); + should(output, 'Osc freq and detune outside nominal range') + .beConstantValueOf(0); + + task.done(); + }); + + audit.run(); + </script> + </body> +</html> |