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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <head> |
| 3 <script src="../fast/js/resources/js-test-pre.js"></script> |
| 4 <script src="resources/audio-testing.js"></script> |
| 5 <script src="resources/audiobuffersource-testing.js"></script> |
| 6 <script> |
| 7 var sampleRate = 44100.0; |
| 8 var lengthInSeconds = 0.1; |
| 9 var context; |
| 10 var source; |
| 11 var sourceBuffer; |
| 12 |
| 13 function runTest() |
| 14 { |
| 15 if (window.testRunner) { |
| 16 testRunner.dumpAsText(); |
| 17 testRunner.waitUntilDone(); |
| 18 } |
| 19 |
| 20 var numberOfFrames = sampleRate * lengthInSeconds; |
| 21 context = new webkitOfflineAudioContext(1, numberOfFrames, sampleRat
e); |
| 22 sourceBuffer = createConstantBuffer(context, numberOfFrames, 0.5); |
| 23 var data = sourceBuffer.getChannelData(0).buffer; |
| 24 |
| 25 var string = [ |
| 26 "onmessage = function(e) {", |
| 27 " var view = new Float32Array(e.data)", |
| 28 " for (var i=0; i < view.length; i++)", |
| 29 " view[i] = 100;", |
| 30 " postMessage('done');", |
| 31 "};" |
| 32 ].join('\n'); |
| 33 var blobURL = URL.createObjectURL(new Blob([string])); |
| 34 |
| 35 var worker = new Worker(blobURL); |
| 36 worker.onmessage = workerReply; |
| 37 worker.postMessage(data, [data]); |
| 38 } |
| 39 |
| 40 function workerReply(event) { |
| 41 source = context.createBufferSource(); |
| 42 source.buffer = sourceBuffer; |
| 43 source.connect(context.destination); |
| 44 source.start(0); |
| 45 context.oncomplete = finishTest; |
| 46 context.startRendering(); |
| 47 } |
| 48 |
| 49 function finishTest(event) { |
| 50 var renderedBuffer = event.renderedBuffer; |
| 51 var numberOfFrames = sampleRate * lengthInSeconds; |
| 52 var expectedBuffer = createConstantBuffer(context, numberOfFrames, 0
.5); |
| 53 |
| 54 var renderedData = renderedBuffer.getChannelData(0); |
| 55 var expectedData = expectedBuffer.getChannelData(0); |
| 56 |
| 57 for (var i = 0; i < numberOfFrames; ++i) { |
| 58 if (expectedData[i] != renderedData[i]) { |
| 59 testFailed('expected: ' + expectedData[i] + ' actual: ' + re
nderedData[i]); |
| 60 finishJSTest(); |
| 61 if (window.testRunner) |
| 62 testRunner.notifyDone(); |
| 63 } |
| 64 } |
| 65 |
| 66 testPassed('Output matches expectations.'); |
| 67 finishJSTest(); |
| 68 if (window.testRunner) |
| 69 testRunner.notifyDone(); |
| 70 } |
| 71 |
| 72 </script> |
| 73 </head> |
| 74 <body onload="runTest()"> |
| 75 <div>Tests that neutered AudioBuffers do not produce garbage</div> |
| 76 <div id="console"></div> |
| 77 </body> |
| 78 |
| 79 |
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Chromium Code Reviews
Issue 19019002:
Ensure that ArrayBuffers actively being used by the Web Audio API cannot be neutered (Closed)
Base URL: svn://svn.chromium.org/blink/trunk