| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| Test premature GC upon OscillatorNode and AudioBufferSourceNode |
| </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 id="layout-test-code"> |
| let sampleRate = 44100; |
| let renderDuration = 1; |
| |
| let audit = Audit.createTaskRunner(); |
| |
| |
| // Create a graph for testing in an isolated scope. Returns |context|. |
| // Create two nodes and schedule only one of them. Then check if |onended| |
| // from the scheduled node is fired correctly. |
| function createGraphInIsolatedScope(sourceNodeType, task, should) { |
| 'use strict'; |
| |
| let context = |
| new OfflineAudioContext(1, renderDuration * sampleRate, sampleRate); |
| |
| { |
| let node = context['create' + sourceNodeType](); |
| node.connect(context.destination); |
| |
| if (sourceNodeType === 'BufferSource') { |
| let emptyBuffer = context.createBuffer(1, sampleRate, sampleRate); |
| node.buffer = emptyBuffer; |
| } |
| |
| // If the node is GCed, |onended| won't be fired. Then this test |
| // will be timed out because done() will not get called. |
| node.onended = function() { |
| should( |
| true, |
| sourceNodeType + 'Node 1 survived GC and onended event fired') |
| .beEqualTo(true); |
| task.done(); |
| }; |
| |
| node.start(); |
| node.stop(0.5 * renderDuration); |
| } |
| |
| // Suspend and GC before the render finishes. The time position is |
| // arbitrary. GC should collect |osc2| because it is not scheduled. |
| context.suspend(0.1 * renderDuration).then(function() { |
| gc(); |
| context.resume(); |
| }); |
| |
| context.startRendering(); |
| } |
| |
| audit.define('oscillator-onended', (task, should) => { |
| createGraphInIsolatedScope('Oscillator', task, should); |
| }); |
| |
| audit.define('buffersource-onended', (task, should) => { |
| createGraphInIsolatedScope('BufferSource', task, should); |
| }); |
| |
| audit.run(); |
| </script> |
| </body> |
| </html> |
