| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
| <html> |
| <head> |
| <script src="resources/audio-testing.js"></script> |
| <script src="resources/audioparam-testing.js"></script> |
| <script src="../resources/js-test-pre.js"></script> |
| </head> |
| |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| description("Test AudioParam setValueAtTime() functionality."); |
| |
| // 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. |
| var numberOfTests = 100; |
| |
| // Max allowed difference between the rendered data and the expected result. |
| var 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. |
| } |
| |
| function runTest() |
| { |
| createAudioGraphAndTest(numberOfTests, |
| 1, |
| setValue, |
| automation, |
| "setValueAtTime()", |
| maxAllowedError, |
| createConstantArray); |
| } |
| |
| runTest(); |
| successfullyParsed = true; |
| |
| </script> |
| |
| <script src="../resources/js-test-post.js"></script> |
| </body> |
| </html> |
