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| 1 <!doctype html> | 1 <!doctype html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <script src="../../resources/js-test.js"></script> | 4 <script src="../../resources/testharness.js"></script> |
| 5 <script src="../../resources/testharnessreport.js"></script> |
| 5 <script src="../resources/compatibility.js"></script> | 6 <script src="../resources/compatibility.js"></script> |
| 6 <script src="../resources/audit-util.js"></script> | 7 <script src="../resources/audit-util.js"></script> |
| 7 <script src="../resources/audio-testing.js"></script> | 8 <script src="../resources/audio-testing.js"></script> |
| 8 <title>Test Multiple Calls to getFloatFrequencyData</title> | 9 <title>Test Multiple Calls to getFloatFrequencyData</title> |
| 9 </head> | 10 </head> |
| 10 | 11 |
| 11 <body> | 12 <body> |
| 12 <script> | 13 <script> |
| 13 description("Test AnalyserNode getFloatFrequencyData and getByteFrequencyD
ata"); | |
| 14 window.jsTestIsAsync = true; | |
| 15 | 14 |
| 16 var sampleRate = 48000; | 15 var sampleRate = 48000; |
| 17 // Render enough data to run the test. | 16 // Render enough data to run the test. |
| 18 var renderFrames = 2*1024; | 17 var renderFrames = 2*1024; |
| 19 var renderDuration = renderFrames / sampleRate; | 18 var renderDuration = renderFrames / sampleRate; |
| 20 | 19 |
| 21 var audit = Audit.createTaskRunner(); | 20 var audit = Audit.createTaskRunner(); |
| 22 | 21 |
| 23 audit.defineTask("test", function (done) { | 22 audit.defineTask("test", function (done) { |
| 24 | 23 |
| (...skipping 75 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 100 "Output of getFloatFrequenycData (converted to byte) after getByte
FrequencyData", | 99 "Output of getFloatFrequenycData (converted to byte) after getByte
FrequencyData", |
| 101 f1) | 100 f1) |
| 102 .beEqualToArray(byteValuesFromFloat) && success; | 101 .beEqualToArray(byteValuesFromFloat) && success; |
| 103 }).then(context.resume.bind(context)); | 102 }).then(context.resume.bind(context)); |
| 104 | 103 |
| 105 osc.start(); | 104 osc.start(); |
| 106 context.startRendering().then(done); | 105 context.startRendering().then(done); |
| 107 }); | 106 }); |
| 108 | 107 |
| 109 audit.defineTask("finish", function (done) { | 108 audit.defineTask("finish", function (done) { |
| 110 finishJSTest(); | |
| 111 done(); | 109 done(); |
| 112 }); | 110 }); |
| 113 | 111 |
| 114 audit.runTasks(); | 112 audit.runTasks(); |
| 115 | 113 |
| 116 // Convert the float frequency data (in dB), |floatFreqData|, to byte valu
es using the dB | 114 // Convert the float frequency data (in dB), |floatFreqData|, to byte valu
es using the dB |
| 117 // limits |minDecibels| and |maxDecibels|. The new byte array is returned
. | 115 // limits |minDecibels| and |maxDecibels|. The new byte array is returned
. |
| 118 function convertFloatToByte(floatFreqData, minDecibels, maxDecibels) { | 116 function convertFloatToByte(floatFreqData, minDecibels, maxDecibels) { |
| 119 var scale = 255 / (maxDecibels - minDecibels); | 117 var scale = 255 / (maxDecibels - minDecibels); |
| 120 | 118 |
| 121 return floatFreqData.map(function (x) { | 119 return floatFreqData.map(function (x) { |
| 122 var value = Math.floor(scale * (x - minDecibels)); | 120 var value = Math.floor(scale * (x - minDecibels)); |
| 123 return Math.min(255, Math.max(0, value)); | 121 return Math.min(255, Math.max(0, value)); |
| 124 }); | 122 }); |
| 125 } | 123 } |
| 126 </script> | 124 </script> |
| 127 </body> | 125 </body> |
| 128 </html> | 126 </html> |
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