Chromium Code Reviews Chromium Code Reviews
Issue 1405413004:
Implement suspend() and resume() for OfflineAudioContext (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master| OLD | NEW |
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| (Empty) | |
| 1 <!doctype html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <script src="../resources/js-test.js"></script> | |
| 5 <script src="resources/compatibility.js"></script> | |
| 6 <script src="resources/audio-testing.js"></script> | |
| 7 </head> | |
| 8 | |
| 9 <body> | |
| 10 <script> | |
| 11 description('Basic test for OfflineAudioContext.suspend() and OfflineAudio Context.resume().'); | |
| 12 window.jsTestIsAsync = true; | |
| 13 | |
| 14 var sampleRate = 44100; | |
| 15 var renderDuration = 1; | |
| 16 var renderQuantum = 128; | |
| 17 | |
| 18 var audit = Audit.createTaskRunner(); | |
| 19 | |
| 20 // Task: Calling suspend with no argument or negative time should | |
| 21 // reject the promise. | |
| 22 audit.defineTask('suspend-invalid-argument', function (done) { | |
| 23 var context = new OfflineAudioContext(1, sampleRate * renderDuration, sa mpleRate); | |
| 24 | |
| 25 Should('context.suspend()', context.suspend()).beRejected(); | |
| 26 Should('context.suspend(-1.0)', context.suspend(-1.0)).beRejected(); | |
| 27 Should('context.suspend(2.0)', context.suspend(2.0)).beRejected(); | |
| 28 | |
| 29 context.startRendering().then(done); | |
| 30 }); | |
| 31 | |
| 32 // Task: Scheduling a suspend in the past should be rejected. | |
| 33 audit.defineTask('suspend-in-the-past', function (done) { | |
| 34 var context = new OfflineAudioContext(1, sampleRate * renderDuration, sa mpleRate); | |
| 35 | |
| 36 context.suspend(0.5).then(function () { | |
| 37 | |
| 38 Should('Scheduling a suspend in the past', | |
| 39 context.suspend(context.currentTime - 0.1)).beRejected(); | |
| 40 | |
| 41 Should('Scheduling a suspend in the future', | |
| 42 context.suspend(context.currentTime + 0.1).then(function () { | |
| 43 context.resume(); | |
| 44 })).beResolved(); | |
| 45 | |
| 46 context.resume(); | |
| 47 }); | |
| 48 | |
| 49 context.startRendering().then(done); | |
| 50 }); | |
| 51 | |
| 52 // Task: Calling multiple suspends at the same rendering quantum should | |
| 53 // reject the promise. | |
| 54 audit.defineTask('identical-suspend-time', function (done) { | |
| 55 var context = new OfflineAudioContext(1, sampleRate * renderDuration, sa mpleRate); | |
| 56 | |
| 57 // |suspendTime1| and |suspendTime2| are identical when quantized to | |
| 58 // the render quantum size. | |
| 59 var suspendTime1 = renderQuantum / sampleRate; | |
| 60 var suspendTime2 = 1.5 * renderQuantum / sampleRate; | |
| 61 | |
| 62 context.suspend(suspendTime1).then(function () { | |
| 63 context.resume(); | |
| 64 }); | |
| 65 | |
| 66 // Printing out the pass message to be more informative here. | |
| 67 testPassed('Scheduling a suspend at frame ' + suspendTime1 * sampleRate + ' was successful.'); | |
| 68 | |
| 69 Should('Scheduling another suspend at the same rendering quantum', | |
| 70 context.suspend(suspendTime2)).beRejected(); | |
| 71 | |
| 72 context.startRendering().then(done); | |
| 73 }); | |
| 74 | |
| 75 // Task: Resuming the context before the actual suspension happens. | |
| 76 audit.defineTask('resume-before-suspend', function (done) { | |
| 77 | |
| 78 // Make the render length 5 times longer to minimize the flakiness. | |
| 79 var longRenderDuration = renderDuration * 5; | |
| 80 var context = new OfflineAudioContext(1, sampleRate * longRenderDuration , sampleRate); | |
| 81 | |
| 82 // Create dummy audio graph to slow the rendering. | |
| 83 var osc = context.createOscillator(); | |
| 84 var lpf = context.createBiquadFilter(); | |
| 85 osc.type = 'sawtooth'; | |
| 86 osc.frequency.setValueAtTime(0.1, 0.0); | |
| 87 osc.frequency.linearRampToValueAtTime(1000, longRenderDuration * 0.5); | |
| 88 osc.frequency.linearRampToValueAtTime(0.1, longRenderDuration); | |
| 89 lpf.frequency.setValueAtTime(0.1, 0.0); | |
| 90 lpf.frequency.linearRampToValueAtTime(1000, longRenderDuration * 0.5); | |
| 91 lpf.frequency.linearRampToValueAtTime(0.1, longRenderDuration); | |
| 92 osc.connect(lpf); | |
| 93 lpf.connect(context.destination); | |
| 94 osc.start(); | |
| 95 | |
| 96 // A suspend is scheduled at the 90% of the render duration. | |
| 97 context.suspend(longRenderDuration * 0.9).then(done); | |
| 98 | |
| 99 testPassed('Scheduling a suspend at ' + longRenderDuration * 0.9 + ' sec onds.'); | |
| 100 | |
| 101 // We have to start rendering to get the time running. | |
| 102 context.startRendering(); | |
| 103 | |
| 104 // Then call resume() immediately after the rendering starts. This | |
| 105 // resume() will be performed before the actual suspension happens. | |
| 106 // Note that this might be racy/flaky if the rendering is so fast that | |
| 107 // it reaches to the suspend even before the resume here. | |
|
Raymond Toy
2015/10/22 22:11:00
Nit: "it reaches to the suspend" -> "it reaches th
hongchan
2015/10/29 20:50:05
Done.
| |
| 108 Should('Resuming at 0 second (before the actual suspend happens)', conte xt.resume()) | |
| 109 .beRejected(); | |
| 110 }); | |
| 111 | |
| 112 // Task: Calling resume on a context that is not started should reject the promise. | |
| 113 audit.defineTask('resume-without-suspend', function (done) { | |
| 114 var context = new OfflineAudioContext(1, sampleRate * renderDuration, sa mpleRate); | |
| 115 | |
| 116 Should('Resuming a context without starting it', context.resume()) | |
| 117 .beRejected().then(done); | |
| 118 }); | |
| 119 | |
| 120 audit.defineTask('finish', function (done) { | |
| 121 finishJSTest(); | |
| 122 done(); | |
| 123 }); | |
| 124 | |
| 125 audit.runTasks( | |
| 126 'suspend-invalid-argument', | |
| 127 'suspend-in-the-past', | |
| 128 'identical-suspend-time', | |
| 129 'resume-before-suspend', | |
| 130 'resume-without-suspend', | |
| 131 'finish' | |
| 132 ); | |
| 133 | |
| 134 successfullyParsed = true; | |
| 135 </script> | |
| 136 | |
| 137 </body> | |
| 138 </html> | |
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