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| 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, negative time or the time |
| 21 // beyond the maximum render duration 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 a running context should be resolved. |
| 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. Resuming |
| 105 // a context that is already running should be resolved. |
| 106 Should('Resuming a running context', context.resume()) |
| 107 .beResolved(); |
| 108 }); |
| 109 |
| 110 // Task: Calling resume on a context that is not started should reject the
promise. |
| 111 audit.defineTask('resume-without-suspend', function (done) { |
| 112 var context = new OfflineAudioContext(1, sampleRate * renderDuration, sa
mpleRate); |
| 113 |
| 114 Should('Resuming a context without starting it', context.resume()) |
| 115 .beRejected().then(done); |
| 116 }); |
| 117 |
| 118 audit.defineTask('finish', function (done) { |
| 119 finishJSTest(); |
| 120 done(); |
| 121 }); |
| 122 |
| 123 audit.runTasks( |
| 124 'suspend-invalid-argument', |
| 125 'suspend-in-the-past', |
| 126 'identical-suspend-time', |
| 127 'resume-before-suspend', |
| 128 'resume-without-suspend', |
| 129 'finish' |
| 130 ); |
| 131 |
| 132 successfullyParsed = true; |
| 133 </script> |
| 134 |
| 135 </body> |
| 136 </html> |
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