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Issue 723823002: AudioBufferSourceNode loop duration should be the actual duration (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: One item per line Created 5 years, 10 months ago
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1 <!DOCTYPE html> 1 <!DOCTYPE html>
2 2
3 <html> 3 <html>
4 <head> 4 <head>
5 <script src="resources/audio-testing.js"></script> 5 <script src="resources/audio-testing.js"></script>
6 <script src="resources/compatibility.js"></script> 6 <script src="resources/compatibility.js"></script>
7 <script src="resources/audiobuffersource-testing.js"></script> 7 <script src="resources/audiobuffersource-testing.js"></script>
8 <script src="../resources/js-test.js"></script> 8 <script src="../resources/js-test.js"></script>
9 </head> 9 </head>
10 10
11 <body> 11 <body>
12 12
13 <div id="description"></div> 13 <div id="description"></div>
14 <div id="console"></div> 14 <div id="console"></div>
15 15
16 <script> 16 <script>
17 description("Tests AudioBufferSourceNode looping with a variety of loop points." ); 17 description("Tests AudioBufferSourceNode looping with a variety of loop points." );
18 18
19 // The following test cases assume an AudioBuffer of length 8 whose PCM data is a linear ramp, 0, 1, 2, 3,... 19 // The following test cases assume an AudioBuffer of length 8 whose PCM data is a linear ramp, 0, 1, 2, 3,...
20 // |description| is optional and will be computed from the other parameters. |of fsetFrame| is 20 // |description| is optional and will be computed from the other parameters. |of fsetFrame| is
21 // optional and defaults to 0. 21 // optional and defaults to 0.
22 22
23 var tests = [ 23 var tests = [
24 24
25 { description: "loop whole buffer by default with loopStart == loopEnd == 0", 25 { description: "loop whole buffer by default with loopStart == loopEnd == 0",
26 loopStartFrame: 0, loopEndFrame: 0, renderFrames: 16, playbackRate: 1, 26 loopStartFrame: 0,
27 loopEndFrame: 0,
28 renderFrames: 16,
29 playbackRate: 1,
27 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] }, 30 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] },
28 31
29 { description: "loop whole buffer explicitly", 32 { description: "loop whole buffer explicitly",
30 loopStartFrame: 0, loopEndFrame: 8, renderFrames: 16, playbackRate: 1, 33 loopStartFrame: 0,
34 loopEndFrame: 8,
35 renderFrames: 16,
36 playbackRate: 1,
31 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] }, 37 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] },
32 38
33 { description: "loop from middle to end of buffer", 39 { description: "loop from middle to end of buffer",
34 loopStartFrame: 4, loopEndFrame: 8, renderFrames: 16, playbackRate: 1, 40 loopStartFrame: 4,
41 loopEndFrame: 8,
42 renderFrames: 16,
43 playbackRate: 1,
35 expected: [0,1,2,3,4,5,6,7,4,5,6,7,4,5,6,7] }, 44 expected: [0,1,2,3,4,5,6,7,4,5,6,7,4,5,6,7] },
36 45
37 { description: "loop from start to middle of buffer", 46 { description: "loop from start to middle of buffer",
38 loopStartFrame: 0, loopEndFrame: 4, renderFrames: 16, playbackRate: 1, 47 loopStartFrame: 0,
48 loopEndFrame: 4,
49 renderFrames: 16,
50 playbackRate: 1,
39 expected: [0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3] }, 51 expected: [0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3] },
40 52
41 { loopStartFrame: 4, loopEndFrame: 6, renderFrames: 16, playbackRate: 1, 53 { loopStartFrame: 4,
54 loopEndFrame: 6,
55 renderFrames: 16,
56 playbackRate: 1,
42 expected: [0,1,2,3,4,5,4,5,4,5,4,5,4,5,4,5] }, 57 expected: [0,1,2,3,4,5,4,5,4,5,4,5,4,5,4,5] },
43 58
44 { loopStartFrame: 3, loopEndFrame: 7, renderFrames: 16, playbackRate: 1, 59 { loopStartFrame: 3,
60 loopEndFrame: 7,
61 renderFrames: 16,
62 playbackRate: 1,
45 expected: [0,1,2,3,4,5,6,3,4,5,6,3,4,5,6,3] }, 63 expected: [0,1,2,3,4,5,6,3,4,5,6,3,4,5,6,3] },
46 64
47 { loopStartFrame: 4, loopEndFrame: 6, renderFrames: 16, playbackRate: 0.5, 65 { loopStartFrame: 4,
66 loopEndFrame: 6,
67 renderFrames: 16,
68 playbackRate: 0.5,
48 expected: [0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 4, 4.5, 5, 5.5] }, 69 expected: [0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 4, 4.5, 5, 5.5] },
49 70
50 { loopStartFrame: 4, loopEndFrame: 6, renderFrames: 16, playbackRate: 1.5, 71 { loopStartFrame: 4,
72 loopEndFrame: 6,
73 renderFrames: 16,
74 playbackRate: 1.5,
51 expected: [0, 1.5, 3, 4.5, 4, 5.5, 5, 4.5, 4, 5.5, 5, 4.5, 4, 5.5, 5, 4.5] }, 75 expected: [0, 1.5, 3, 4.5, 4, 5.5, 5, 4.5, 4, 5.5, 5, 4.5, 4, 5.5, 5, 4.5] },
52 76
53 // Offset past loop end, so playback starts at loop start 77 // Offset past loop end, so playback starts at loop start
54 { loopStartFrame: 2, loopEndFrame: 5, renderFrames: 16, playbackRate: 1, 78 { loopStartFrame: 2,
79 loopEndFrame: 5,
80 renderFrames: 16,
81 playbackRate: 1,
55 offsetFrame: 6, 82 offsetFrame: 6,
56 expected: [2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2] }, 83 expected: [2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2] },
57 84
58 // Offset before loop start, so start at offset and continue 85 // Offset before loop start, so start at offset and continue
59 { loopStartFrame: 3, loopEndFrame: 6, renderFrames: 16, playbackRate: 1, 86 { loopStartFrame: 3,
87 loopEndFrame: 6,
88 renderFrames: 16,
89 playbackRate: 1,
60 offsetFrame: 1, 90 offsetFrame: 1,
61 expected: [1, 2, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4] }, 91 expected: [1, 2, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4] },
62 92
63 // Offset between loop start and loop end, so start at offset and continue 93 // Offset between loop start and loop end, so start at offset and continue
64 { loopStartFrame: 3, loopEndFrame: 6, renderFrames: 16, playbackRate: 1, 94 { loopStartFrame: 3,
95 loopEndFrame: 6,
96 renderFrames: 16,
97 playbackRate: 1,
65 offsetFrame: 4, 98 offsetFrame: 4,
66 expected: [4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4] }, 99 expected: [4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4] },
67 100
68 { description: "illegal playbackRate of 47 greater than loop length", 101 { description: "illegal playbackRate of 47 greater than loop length",
69 loopStartFrame: 4, loopEndFrame: 6, renderFrames: 16, playbackRate: 47, 102 loopStartFrame: 4,
103 loopEndFrame: 6,
104 renderFrames: 16,
105 playbackRate: 47,
70 expected: [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] }, 106 expected: [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] },
71 107
72 // Try illegal loop-points - they should be ignored and we'll loop the whole buf fer. 108 // Try illegal loop-points - they should be ignored and we'll loop the whole buf fer.
73 109
74 { description: "illegal loop: loopStartFrame > loopEndFrame", 110 { description: "illegal loop: loopStartFrame > loopEndFrame",
75 loopStartFrame: 7, loopEndFrame: 3, renderFrames: 16, playbackRate: 1, 111 loopStartFrame: 7,
112 loopEndFrame: 3,
113 renderFrames: 16,
114 playbackRate: 1,
76 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] }, 115 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] },
77 116
78 { description: "illegal loop: loopStartFrame == loopEndFrame", 117 { description: "illegal loop: loopStartFrame == loopEndFrame",
79 loopStartFrame: 3, loopEndFrame: 3, renderFrames: 16, playbackRate: 1, 118 loopStartFrame: 3,
119 loopEndFrame: 3,
120 renderFrames: 16,
121 playbackRate: 1,
80 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] }, 122 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] },
81 123
82 { description: "illegal loop: loopStartFrame < 0", 124 { description: "illegal loop: loopStartFrame < 0",
83 loopStartFrame: -8, loopEndFrame: 3, renderFrames: 16, playbackRate: 1, 125 loopStartFrame: -8,
126 loopEndFrame: 3,
127 renderFrames: 16,
128 playbackRate: 1,
84 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] }, 129 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] },
85 130
86 { description: "illegal loop: loopEndFrame > bufferLength", 131 { description: "illegal loop: loopEndFrame > bufferLength",
87 loopStartFrame: 0, loopEndFrame: 30000, renderFrames: 16, playbackRate: 1, 132 loopStartFrame: 0,
133 loopEndFrame: 30000,
134 renderFrames: 16,
135 playbackRate: 1,
88 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] }, 136 expected: [0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7] },
89 137
138 // Start a loop with a duration longer than the buffer. The output should be th e data from frame 1
139 // to 6, and then looping from 3 to 5 until 30 frames have been played.
140 { description: "loop from 3 -> 6 with offset 1 for 31 frames",
141 loopStartFrame: 3,
142 loopEndFrame: 6,
143 playbackRate: 1,
144 offsetFrame: 1,
145 durationFrames: 30,
146 expected: [1, 2, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5 , 3, 4, 5, 3, 4, 5, 3] },
147
90 ]; 148 ];
91 149
92 var sampleRate = 44100; 150 var sampleRate = 44100;
93 var buffer; 151 var buffer;
94 var bufferFrameLength = 8; 152 var bufferFrameLength = 8;
95 var testSpacingFrames = 32; 153 var testSpacingFrames = 32;
96 var testSpacingSeconds = testSpacingFrames / sampleRate; 154 var testSpacingSeconds = testSpacingFrames / sampleRate;
97 var totalRenderLengthFrames = tests.length * testSpacingFrames; 155 var totalRenderLengthFrames = tests.length * testSpacingFrames;
98 156
99 function runLoopTest(context, testNumber, test) { 157 function runLoopTest(context, testNumber, test) {
100 var source = context.createBufferSource(); 158 var source = context.createBufferSource();
101 159
102 source.buffer = buffer; 160 source.buffer = buffer;
103 source.playbackRate.value = test.playbackRate; 161 source.playbackRate.value = test.playbackRate;
104 source.loop = true; 162 source.loop = true;
105 source.loopStart = test.loopStartFrame / context.sampleRate; 163 source.loopStart = test.loopStartFrame / context.sampleRate;
106 source.loopEnd = test.loopEndFrame / context.sampleRate; 164 source.loopEnd = test.loopEndFrame / context.sampleRate;
107 165
108 var offset = test.offsetFrame ? test.offsetFrame / context.sampleRate : 0; 166 var offset = test.offsetFrame ? test.offsetFrame / context.sampleRate : 0;
109 167
110 source.connect(context.destination); 168 source.connect(context.destination);
111 169
112 // Render each test one after the other, spaced apart by testSpacingSeconds. 170 // Render each test one after the other, spaced apart by testSpacingSeconds.
113 var startTime = testNumber * testSpacingSeconds; 171 var startTime = testNumber * testSpacingSeconds;
114 var duration = test.renderFrames / context.sampleRate; 172
115 source.start(startTime, offset); 173 if (test.renderFrames) {
116 source.stop(startTime + duration); 174 var duration = test.renderFrames / context.sampleRate;
175 if (test.renderFrames > testSpacingFrames || test.renderFrames < 0) {
176 testFailed("Test " + testNumber
177 + ": renderFrames (" + test.renderFrames + ") outside the range [0, "
178 + testSpacingFrames + "]");
179 }
180 source.start(startTime, offset);
181 source.stop(startTime + duration);
182 } else if (test.durationFrames) {
183 if (test.durationFrames > testSpacingFrames || test.durationFrames < 0) {
184 testFailed("Test " + testNumber
185 + ": durationFrames (" + test.durationFrames + ") outside the ra nge [0, "
186 + testSpacingFrames + "]");
187 }
188 source.start(startTime, offset, test.durationFrames / context.sampleRate );
189 } else {
190 testFailed("Test " + testNumber + " must specify one of renderFrames or durationFrames");
191 }
117 } 192 }
118 193
119 function runTest() { 194 function runTest() {
120 if (window.testRunner) { 195 if (window.testRunner) {
121 testRunner.dumpAsText(); 196 testRunner.dumpAsText();
122 testRunner.waitUntilDone(); 197 testRunner.waitUntilDone();
123 } 198 }
124 199
125 window.jsTestIsAsync = true; 200 window.jsTestIsAsync = true;
126 201
127 // Create offline audio context. 202 // Create offline audio context.
128 var context = new OfflineAudioContext(1, totalRenderLengthFrames, sampleRate ); 203 var context = new OfflineAudioContext(1, totalRenderLengthFrames, sampleRate );
129 buffer = createTestBuffer(context, bufferFrameLength); 204 buffer = createTestBuffer(context, bufferFrameLength);
130 205
131 for (var i = 0; i < tests.length; ++i) 206 for (var i = 0; i < tests.length; ++i)
132 runLoopTest(context, i, tests[i]); 207 runLoopTest(context, i, tests[i]);
133 208
134 context.oncomplete = checkAllTests; 209 context.oncomplete = checkAllTests;
135 context.startRendering(); 210 context.startRendering();
136 } 211 }
137 212
138 runTest(); 213 runTest();
139 successfullyParsed = true; 214 successfullyParsed = true;
140 215
141 </script> 216 </script>
142 217
143 </body> 218 </body>
144 </html> 219 </html>
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