| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| AudioParam with Huge End Time |
| </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 sampleRate = 48000; |
| // Render for some small (but fairly arbitrary) time. |
| let renderDuration = 0.125; |
| // Any huge time value that won't fit in a size_t (2^64 on a 64-bit |
| // machine). |
| let largeTime = 1e300; |
| |
| let audit = Audit.createTaskRunner(); |
| |
| // See crbug.com/582701. Create an audioparam with a huge end time and |
| // verify that to automation is run. We don't care about the actual |
| // results, just that it runs. |
| |
| // Test linear ramp with huge end time |
| audit.define('linearRamp', (task, should) => { |
| let graph = createGraph(); |
| graph.gain.gain.linearRampToValueAtTime(0.1, largeTime); |
| |
| graph.source.start(); |
| graph.context.startRendering() |
| .then(function(buffer) { |
| should(true, 'linearRampToValue(0.1, ' + largeTime + ')') |
| .message('successfully rendered', 'unsuccessfully rendered'); |
| }) |
| .then(() => task.done()); |
| }); |
| |
| // Test exponential ramp with huge end time |
| audit.define('exponentialRamp', (task, should) => { |
| let graph = createGraph(); |
| graph.gain.gain.exponentialRampToValueAtTime(.1, largeTime); |
| |
| graph.source.start(); |
| graph.context.startRendering() |
| .then(function(buffer) { |
| should(true, 'exponentialRampToValue(0.1, ' + largeTime + ')') |
| .message('successfully rendered', 'unsuccessfully rendered'); |
| }) |
| .then(() => task.done()); |
| }); |
| |
| audit.run(); |
| |
| // Create the graph and return the context, the source, and the gain node. |
| function createGraph() { |
| let context = |
| new OfflineAudioContext(1, renderDuration * sampleRate, sampleRate); |
| let src = context.createBufferSource(); |
| src.buffer = createConstantBuffer(context, 1, 1); |
| src.loop = true; |
| let gain = context.createGain(); |
| src.connect(gain); |
| gain.connect(context.destination); |
| gain.gain.setValueAtTime(1, 0.1 / sampleRate); |
| |
| return {context: context, gain: gain, source: src}; |
| } |
| </script> |
| </body> |
| </html> |
