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| (Empty) | |
| 1 <!doctype html> |
| 2 <html> |
| 3 <head> |
| 4 <title>Test AudioContextOptions</title> |
| 5 <script src="../resources/testharness.js"></script> |
| 6 <script src="../resources/testharnessreport.js"></script> |
| 7 <script src="resources/audio-testing.js"></script> |
| 8 </head> |
| 9 |
| 10 <body> |
| 11 <script> |
| 12 var context; |
| 13 var audit = Audit.createTaskRunner(); |
| 14 |
| 15 // Task: test AudioContextOptions (1). |
| 16 audit.defineTask('test-audiocontextoptions-1', function (done) { |
| 17 |
| 18 // Verify that an AudioContext can be created with default options. |
| 19 Should("context = new AudioContext()", function () { |
| 20 context = new AudioContext(); |
| 21 }).notThrow(); |
| 22 |
| 23 var defaultLatency = context.baseLatency; |
| 24 Should("default baseLatency", defaultLatency).beGreaterThan(0); |
| 25 |
| 26 // Verify that any double can be passed and that it results in interactive
latency |
| 27 Should("context = new AudioContext({'latencyHint': 0.05})", function () { |
| 28 context = new AudioContext({'latencyHint': 0.05}); |
| 29 }).notThrow(); |
| 30 Should("double-constructor baseLatency", context.baseLatency).beEqualTo(de
faultLatency); |
| 31 |
| 32 // Verify that an AudioContext can be created with the expected latency ty
pes. |
| 33 Should("context = new AudioContext({'latencyHint': 'interactive'})", funct
ion () { |
| 34 context = new AudioContext({'latencyHint': 'interactive'}); |
| 35 }).notThrow(); |
| 36 |
| 37 var interactiveLatency = context.baseLatency; |
| 38 Should("interactive baseLatency", interactiveLatency).beEqualTo(defaultLat
ency); |
| 39 |
| 40 Should("context = new AudioContext({'latencyHint': 'balanced'})", function
() { |
| 41 context = new AudioContext({'latencyHint': 'balanced'}); |
| 42 }).notThrow(); |
| 43 |
| 44 var balancedLatency = context.baseLatency; |
| 45 Should("balanced baseLatency", balancedLatency).beGreaterThanOrEqualTo(int
eractiveLatency); |
| 46 |
| 47 Should("context = new AudioContext({'latencyHint': 'playback'})", function
() { |
| 48 context = new AudioContext({'latencyHint': 'playback'}); |
| 49 }).notThrow(); |
| 50 |
| 51 var playbackLatency = context.baseLatency; |
| 52 Should("playback baseLatency", playbackLatency).beGreaterThanOrEqualTo(bal
ancedLatency); |
| 53 |
| 54 // Verify that invalid latencyHint values are rejected. |
| 55 Should("context = new AudioContext({'latencyHint': 'foo'})", function () { |
| 56 context = new AudioContext({'latencyHint': 'foo'}); |
| 57 }).throw(); |
| 58 |
| 59 // Verify that no extra options can be passed into the AudioContextOptions
. |
| 60 Should("context = new AudioContext('latencyHint')", function () { |
| 61 context = new AudioContext('latencyHint'); |
| 62 }).throw(); |
| 63 |
| 64 done(); |
| 65 }); |
| 66 |
| 67 audit.runTasks(); |
| 68 </script> |
| 69 </body> |
| 70 </html> |
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Chromium Code Reviews
Issue 2501863003:
Support for AudioContextOptions latencyHint. (Closed)
