| <!doctype html> |
| <html> |
| <head> |
| <title> |
| Biquad Tailtime Computation (crbug.com/829349) |
| </title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script src="../resources/audit-util.js"></script> |
| <script src="../resources/audit.js"></script> |
| </head> |
| <body> |
| <script> |
| let audit = Audit.createTaskRunner(); |
| |
| // Sample rate used in testing crbug.com/829349. Use the same rate to |
| // make sure the coefficients have the same values. (The actual |
| // coefficients depend on the sample rate, so keep it the same for |
| // consistency with the repro case.) |
| let sampleRate = 44100; |
| |
| audit.define('Peaking filter tailtime', (task, should) => { |
| // Short length |
| let context = |
| new OfflineAudioContext({length: 1024, sampleRate: sampleRate}); |
| let src = new OscillatorNode(context); |
| |
| // This particular filter is one of the filters used in the repro case |
| // from crbug.com/829349. In a debug build, this causes a DCHECK crash |
| // because a value as NaN. Just use this filter and verify that it |
| // works and doesn't crash in a debug build. |
| let f = new BiquadFilterNode( |
| context, |
| {type: 'peaking', frequency: 15000, Q: 0.2, gain: -5, detune: 0}); |
| |
| src.connect(f).connect(context.destination); |
| |
| src.start(); |
| context.startRendering() |
| .then(audioBuffer => { |
| // Just verify that the output is not all zeroes. The actual test |
| // is that we don't have a DCHECK failure in a debug build. |
| should(audioBuffer.getChannelData(0), 'Filter output') |
| .notBeConstantValueOf(0); |
| }) |
| .then(() => task.done()); |
| }); |
| |
| audit.run(); |
| </script> |
| </body> |
| </html> |
