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| (Empty) |
| 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/audit-util.js"></script> | |
| 7 <script src="resources/audio-testing.js"></script> | |
| 8 </head> | |
| 9 | |
| 10 <body> | |
| 11 | |
| 12 <div id="description"></div> | |
| 13 <div id="console"></div> | |
| 14 | |
| 15 <script> | |
| 16 description("Tests ScriptProcessorNode."); | |
| 17 | |
| 18 var sampleRate = 44100.0; | |
| 19 var outputChannels = 6; | |
| 20 var playbackTime = 0.0; | |
| 21 | |
| 22 // For the current implementation of ScriptProcessorNode, when it works with Off
lineAudioContext (which runs much faster | |
| 23 // than real-time) the event.inputBuffer might be overwrite again before onaudio
process ever get chance to be called. | |
| 24 // We carefully arrange the renderLengthInFrames and bufferSize to have exactly
the same value to avoid this issue. | |
| 25 var renderLengthInFrames = 512; | |
| 26 var bufferSize = 512; | |
| 27 | |
| 28 var context; | |
| 29 | |
| 30 function createBuffer(context, length) { | |
| 31 var audioBuffer = context.createBuffer(2, length, sampleRate); | |
| 32 var n = audioBuffer.length; | |
| 33 var dataL = audioBuffer.getChannelData(0); | |
| 34 var dataR = audioBuffer.getChannelData(1); | |
| 35 | |
| 36 for (var i = 0; i < n; ++i) { | |
| 37 dataL[i] = -1; | |
| 38 dataR[i] = 1; | |
| 39 } | |
| 40 | |
| 41 return audioBuffer; | |
| 42 } | |
| 43 | |
| 44 function processAudioData(event) { | |
| 45 playbackTime = event.playbackTime; | |
| 46 var expectedTime = context.currentTime + (bufferSize / context.sampleRate); | |
| 47 var allowedTimeGap = 0.0000001; | |
| 48 | |
| 49 // There may be a little time gap which is from different thread operation | |
| 50 // between currentTime when main thread fires onaudioprocess() and currentTi
me when read in JS | |
| 51 // since currentTime is continuously increasing on audio thread. | |
| 52 | |
| 53 shouldBeCloseTo("playbackTime", expectedTime, allowedTimeGap, true); | |
| 54 | |
| 55 buffer = event.outputBuffer; | |
| 56 if (buffer.numberOfChannels != outputChannels) | |
| 57 testFailed("numberOfOutputChannels doesn't match!"); | |
| 58 | |
| 59 if (buffer.length != bufferSize) | |
| 60 testFailed("numberOfOutputChannels doesn't match!"); | |
| 61 | |
| 62 buffer = event.inputBuffer; | |
| 63 var bufferDataL = buffer.getChannelData(0); | |
| 64 var bufferDataR = buffer.getChannelData(1); | |
| 65 | |
| 66 var success = true; | |
| 67 // Go through every sample and make sure it's all -1 for the left-channel, a
nd all +1 for the right-channel. | |
| 68 for (var i = 0; i < buffer.length; ++i) { | |
| 69 if (bufferDataL[i] != -1 || bufferDataR[i] != 1) { | |
| 70 success = false; | |
| 71 break; | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 if (success) { | |
| 76 testPassed("onaudioprocess was called with correct data."); | |
| 77 } else { | |
| 78 testFailed("onaudioprocess was called with wrong data."); | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 function doBufferSizeTest(size) { | |
| 83 try { | |
| 84 var jsnode = context.createScriptProcessor(size, 1, 1); | |
| 85 testPassed("Successfully created ScriptProcessorNode with bufferSize = "
+ size + "."); | |
| 86 } catch(e) { | |
| 87 testFailed("Failed to create ScriptProcessorNode with bufferSize = " + s
ize + "."); | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 function runTest() { | |
| 92 if (window.testRunner) { | |
| 93 testRunner.dumpAsText(); | |
| 94 testRunner.waitUntilDone(); | |
| 95 } | |
| 96 | |
| 97 window.jsTestIsAsync = true; | |
| 98 | |
| 99 // Create offline audio context. | |
| 100 context = new OfflineAudioContext(2, renderLengthInFrames, sampleRate); | |
| 101 | |
| 102 try { | |
| 103 var jsnode = context.createScriptProcessor(512, 0, 0); | |
| 104 testFailed("Exception should be thrown when both numberOfInputChannels a
nd numberOfOutputChannels are zero."); | |
| 105 } catch(e) { | |
| 106 testPassed("Exception was thrown when both numberOfInputChannels and num
berOfOutputChannels are zero."); | |
| 107 } | |
| 108 | |
| 109 try { | |
| 110 var jsnode = context.createScriptProcessor(512, 1, 0); | |
| 111 testPassed("Successfully created ScriptProcessorNode with numberOfInputC
hannels = 1 and numberOfOutputChannels = 0."); | |
| 112 } catch(e) { | |
| 113 testFailed("Exception should not be thrown when numberOfInputChannels =
1 and numberOfOutputChannels = 0."); | |
| 114 } | |
| 115 | |
| 116 try { | |
| 117 var jsnode = context.createScriptProcessor(512, 2, 0); | |
| 118 testPassed("Successfully created ScriptProcessorNode with numberOfInputC
hannels = 2 and numberOfOutputChannels = 0."); | |
| 119 } catch(e) { | |
| 120 testFailed("Exception should not be thrown when numberOfInputChannels =
2 and numberOfOutputChannels = 0."); | |
| 121 } | |
| 122 | |
| 123 try { | |
| 124 var jsnode = context.createScriptProcessor(512, 0, 1); | |
| 125 testPassed("Successfully created ScriptProcessorNode with numberOfInputC
hannels = 0 and numberOfOutputChannels = 1."); | |
| 126 } catch(e) { | |
| 127 testFailed("Exception should not be thrown when numberOfInputChannels =
0 and numberOfOutputChannels = 1."); | |
| 128 } | |
| 129 | |
| 130 try { | |
| 131 var jsnode = context.createScriptProcessor(512, 0, 2); | |
| 132 testPassed("Successfully created ScriptProcessorNode with numberOfInputC
hannels = 0 and numberOfOutputChannels = 2."); | |
| 133 } catch(e) { | |
| 134 testFailed("Exception should not be thrown when numberOfInputChannels =
0 and numberOfOutputChannels = 2."); | |
| 135 } | |
| 136 | |
| 137 try { | |
| 138 var jsnode = context.createScriptProcessor(511, 1, 1); | |
| 139 testFailed("Exception should be thrown for illegal bufferSize."); | |
| 140 } catch(e) { | |
| 141 testPassed("Exception was thrown for illegal bufferSize."); | |
| 142 } | |
| 143 | |
| 144 doBufferSizeTest(256); | |
| 145 doBufferSizeTest(512); | |
| 146 doBufferSizeTest(1024); | |
| 147 doBufferSizeTest(2048); | |
| 148 doBufferSizeTest(4096); | |
| 149 doBufferSizeTest(8192); | |
| 150 doBufferSizeTest(16384); | |
| 151 | |
| 152 var sourceBuffer = createBuffer(context, renderLengthInFrames); | |
| 153 | |
| 154 var bufferSource = context.createBufferSource(); | |
| 155 bufferSource.buffer = sourceBuffer; | |
| 156 | |
| 157 var jsnode = context.createScriptProcessor(bufferSize, 2, outputChannels); | |
| 158 | |
| 159 bufferSource.connect(jsnode); | |
| 160 jsnode.connect(context.destination); | |
| 161 jsnode.onaudioprocess = processAudioData; | |
| 162 | |
| 163 bufferSource.start(0); | |
| 164 context.oncomplete = finishJSTest; | |
| 165 context.startRendering(); | |
| 166 } | |
| 167 | |
| 168 runTest(); | |
| 169 | |
| 170 </script> | |
| 171 | |
| 172 </body> | |
| 173 </html> | |
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Chromium Code Reviews
Issue 2581463002:
Refactor WebAudio test directory (Closed)
