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Issue 2895963003: Apply layout-test-tidy to LayoutTests/webaudio (Closed)
Patch Set: Created 3 years, 7 months ago
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1 <!DOCTYPE html> 1 <!DOCTYPE html>
2
3 <!-- 2 <!--
4 Tests that we are able to schedule a series of notes to playback with sample-acc uracy. 3 Tests that we are able to schedule a series of notes to playback with sample-acc uracy.
5 We use an impulse so we can tell exactly where the rendering is happening. 4 We use an impulse so we can tell exactly where the rendering is happening.
6 --> 5 -->
6 <html>
7 <head>
8 <title>
9 sample-accurate-scheduling.html
10 </title>
11 <script src="../../resources/testharness.js"></script>
12 <script src="../../resources/testharnessreport.js"></script>
13 <script src="../resources/audit-util.js"></script>
14 <script src="../resources/audit.js"></script>
15 <script src="../resources/buffer-loader.js"></script>
16 </head>
17 <body>
18 <script id="layout-test-code">
19 let audit = Audit.createTaskRunner();
7 20
8 <html> 21 let sampleRate = 44100.0;
9 <head> 22 let lengthInSeconds = 4;
10 <script src="../../resources/testharness.js"></script>
11 <script src="../../resources/testharnessreport.js"></script>
12 <script src="../resources/audit-util.js"></script>
13 <script src="../resources/audit.js"></script>
14 <script src="../resources/buffer-loader.js"></script>
15 </head>
16 23
17 <body> 24 let context = 0;
25 let bufferLoader = 0;
26 let impulse;
18 27
19 <script> 28 // See if we can render at exactly these sample offsets.
20 let audit = Audit.createTaskRunner(); 29 let sampleOffsets = [0, 3, 512, 517, 1000, 1005, 20000, 21234, 37590];
21 30
22 let sampleRate = 44100.0; 31 function createImpulse() {
23 let lengthInSeconds = 4; 32 // An impulse has a value of 1 at time 0, and is otherwise 0.
33 impulse = context.createBuffer(2, 512, sampleRate);
34 let sampleDataL = impulse.getChannelData(0);
35 let sampleDataR = impulse.getChannelData(1);
36 sampleDataL[0] = 1.0;
37 sampleDataR[0] = 1.0;
38 }
24 39
25 let context = 0; 40 function playNote(time) {
26 let bufferLoader = 0; 41 let bufferSource = context.createBufferSource();
27 let impulse; 42 bufferSource.buffer = impulse;
43 bufferSource.connect(context.destination);
44 bufferSource.start(time);
45 }
28 46
29 // See if we can render at exactly these sample offsets. 47 function checkSampleAccuracy(buffer, should) {
30 let sampleOffsets = [0, 3, 512, 517, 1000, 1005, 20000, 21234, 37590]; 48 let bufferDataL = buffer.getChannelData(0);
49 let bufferDataR = buffer.getChannelData(1);
31 50
32 function createImpulse() { 51 let impulseCount = 0;
33 // An impulse has a value of 1 at time 0, and is otherwise 0. 52 let badOffsetCount = 0;
34 impulse = context.createBuffer(2, 512, sampleRate);
35 let sampleDataL = impulse.getChannelData(0);
36 let sampleDataR = impulse.getChannelData(1);
37 sampleDataL[0] = 1.0;
38 sampleDataR[0] = 1.0;
39 }
40 53
41 function playNote(time) { 54 // Left and right channels must be the same.
42 let bufferSource = context.createBufferSource(); 55 should(bufferDataL, 'Content of left and right channels match and')
43 bufferSource.buffer = impulse; 56 .beEqualToArray(bufferDataR);
44 bufferSource.connect(context.destination);
45 bufferSource.start(time);
46 }
47 57
48 function checkSampleAccuracy(buffer, should) { 58 // Go through every sample and make sure it's 0, except at positions in
49 let bufferDataL = buffer.getChannelData(0); 59 // sampleOffsets.
50 let bufferDataR = buffer.getChannelData(1); 60 for (let i = 0; i < buffer.length; ++i) {
51 61 if (bufferDataL[i] != 0) {
52 let impulseCount = 0;
53 let badOffsetCount = 0;
54
55 // Left and right channels must be the same.
56 should(bufferDataL, "Content of left and right channels match and")
57 .beEqualToArray(bufferDataR);
58
59 // Go through every sample and make sure it's 0, except at positions in
60 // sampleOffsets.
61 for (let i = 0; i < buffer.length; ++i) {
62 if (bufferDataL[i] != 0) {
63 // Make sure this index is in sampleOffsets 62 // Make sure this index is in sampleOffsets
64 let found = false; 63 let found = false;
65 for (let j = 0; j < sampleOffsets.length; ++j) { 64 for (let j = 0; j < sampleOffsets.length; ++j) {
66 if (sampleOffsets[j] == i) { 65 if (sampleOffsets[j] == i) {
67 found = true; 66 found = true;
68 break; 67 break;
69 } 68 }
70 } 69 }
71 ++impulseCount; 70 ++impulseCount;
72 should(found, "Non-zero sample found at sample offset " + i) 71 should(found, 'Non-zero sample found at sample offset ' + i)
73 .beTrue(); 72 .beTrue();
74 if (!found) { 73 if (!found) {
75 ++badOffsetCount; 74 ++badOffsetCount;
76 } 75 }
76 }
77 } 77 }
78 }
79 78
80 should(impulseCount, "Number of impulses found") 79 should(impulseCount, 'Number of impulses found')
81 .beEqualTo(sampleOffsets.length); 80 .beEqualTo(sampleOffsets.length);
82 81
83 if (impulseCount == sampleOffsets.length) { 82 if (impulseCount == sampleOffsets.length) {
84 should(badOffsetCount, "bad offset") 83 should(badOffsetCount, 'bad offset').beEqualTo(0);
85 .beEqualTo(0); 84 }
86 } 85 }
87 }
88 86
89 audit.define({ 87 audit.define(
90 label: "test", 88 {label: 'test', description: 'Test sample-accurate scheduling'},
91 description: "Test sample-accurate scheduling" 89 function(task, should) {
92 }, function (task, should) {
93 90
94 // Create offline audio context. 91 // Create offline audio context.
95 context = new OfflineAudioContext(2, sampleRate * lengthInSeconds, 92 context = new OfflineAudioContext(
96 sampleRate); 93 2, sampleRate * lengthInSeconds, sampleRate);
97 createImpulse(); 94 createImpulse();
98 95
99 for (let i = 0; i < sampleOffsets.length; ++i) { 96 for (let i = 0; i < sampleOffsets.length; ++i) {
100 let timeInSeconds = sampleOffsets[i] / sampleRate; 97 let timeInSeconds = sampleOffsets[i] / sampleRate;
101 playNote(timeInSeconds); 98 playNote(timeInSeconds);
102 } 99 }
103
104 context.startRendering()
105 .then(function (buffer) {
106 checkSampleAccuracy(buffer, should);
107 task.done();
108 });
109 });
110 100
111 audit.run(); 101 context.startRendering().then(function(buffer) {
112 </script> 102 checkSampleAccuracy(buffer, should);
103 task.done();
104 });
105 });
113 106
114 </body> 107 audit.run();
108 </script>
109 </body>
115 </html> 110 </html>
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