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| (Empty) | |
| 1 <!doctype html> |
| 2 <html> |
| 3 <head> |
| 4 <title>Test audiocontext suspend/resume</title> |
| 5 <script src="resources/compatibility.js"></script> |
| 6 <script src="resources/audio-testing.js"></script> |
| 7 <script src="../resources/js-test.js"></script> |
| 8 </head> |
| 9 |
| 10 <body> |
| 11 <script> |
| 12 description("Test suspend/resume for an AudioContext"); |
| 13 |
| 14 var context; |
| 15 var osc; |
| 16 var p1; |
| 17 var p2; |
| 18 |
| 19 var sampleRate = 44100; |
| 20 var durationInSeconds = 1; |
| 21 |
| 22 function passed () { |
| 23 testPassed("Context resumed correctly."); |
| 24 } |
| 25 |
| 26 function failed () { |
| 27 testFailed("Context did not resume!."); |
| 28 } |
| 29 |
| 30 function resolvedResumeWhenReleased () { |
| 31 testFailed("resume() on a released context not rejected"); |
| 32 finishJSTest(); |
| 33 } |
| 34 |
| 35 function rejectedResumeWhenReleased () { |
| 36 testPassed("resume() on a released context rejected as expected"); |
| 37 finishJSTest(); |
| 38 } |
| 39 |
| 40 function checkResult (event) { |
| 41 // We don't care about the actual result of the offline rendering. |
| 42 shouldBeEqualToString("context.state", "released"); |
| 43 shouldThrow("context.suspend()"); |
| 44 context.resume().then(resolvedResumeWhenReleased, rejectedResumeWhenRele
ased); |
| 45 } |
| 46 |
| 47 function runTest() { |
| 48 window.jsTestIsAsync = true; |
| 49 // Test suspend/resume. Ideally this test is best with a online AudioCo
ntext, but content |
| 50 // shell doesn't really have a working online AudioContext. Hence, use a
n |
| 51 // OfflineAudioContext. Not all possible scenarios can be easily checked
with an offline |
| 52 // context instead of an online context. |
| 53 |
| 54 // Create an audio context with an oscillator. |
| 55 context = new OfflineAudioContext(1, durationInSeconds * sampleRate, sam
pleRate); |
| 56 osc = context.createOscillator(); |
| 57 osc.connect(context.destination); |
| 58 |
| 59 // Verify the state. |
| 60 shouldBeEqualToString("context.state", "paused"); |
| 61 |
| 62 // Multiple calls to suspend() should not be a problem. But these curren
tly do nothing with |
| 63 // an OfflineAudioContext. |
| 64 shouldNotThrow("context.suspend()"); |
| 65 shouldNotThrow("context.suspend()"); |
| 66 |
| 67 // Multiple calls to resume should not be a problem. But these currently
do nothing with an |
| 68 // OfflineAudioContext. |
| 69 shouldNotThrow("p1 = context.resume()"); |
| 70 shouldBeType(p1, Promise); |
| 71 p1.then(passed, failed); |
| 72 shouldNotThrow("p2 = context.resume()"); |
| 73 shouldBeType(p2, Promise); |
| 74 if (p1 === p2) |
| 75 testFailed("Promises from resume should not be equal."); |
| 76 else |
| 77 testPassed("Promises from resume are not equal."); |
| 78 p2.then(passed, failed); |
| 79 |
| 80 // Resume doesn't actually resume an offline context |
| 81 shouldBeEqualToString("context.state", "paused"); |
| 82 |
| 83 // Render the offline context. |
| 84 osc.start(); |
| 85 context.oncomplete = checkResult; |
| 86 context.startRendering(); |
| 87 } |
| 88 |
| 89 runTest(); |
| 90 successfullyParsed = true; |
| 91 </script> |
| 92 </body> |
| 93 </html> |
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Chromium Code Reviews
Issue 625363004:
Implement suspend/resume for AudioContext (Closed)
Base URL: svn://svn.chromium.org/blink/trunk