| <!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> |
