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| 1 <!doctype html> | 1 <!doctype html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <title>Test AudioBufferSourceNode With Looping a Single-Sample Buffer</title
> | 4 <title>Validate Reduction Value of DynamicsComporessor after Disabling</titl
e> |
| 5 <script src="resources/compatibility.js"></script> | 5 <script src="resources/compatibility.js"></script> |
| 6 <script src="resources/audio-testing.js"></script> | 6 <script src="resources/audio-testing.js"></script> |
| 7 <script src="../resources/js-test.js"></script> | 7 <script src="../resources/js-test.js"></script> |
| 8 </head> | 8 </head> |
| 9 | 9 |
| 10 <body> | 10 <body> |
| 11 <script> | 11 <script> |
| 12 description("Test AudioBufferSourceNode With Looping a Single-Sample Buffe
r"); | 12 description("Validate Reduction Value of DynamicsComporessor after Disabli
ng"); |
| 13 | 13 |
| 14 var context; | 14 var context; |
| 15 var buffer; |
| 15 var source; | 16 var source; |
| 16 var buffer; | 17 var compressor; |
| 17 var renderedData; | 18 var renderedData; |
| 18 | 19 |
| 19 var sampleRate = 44100; | 20 var sampleRate = 44100; |
| 20 var testDurationSamples = 1000; | 21 var testDurationSamples = 44100; |
| 21 | 22 |
| 22 function checkResult (event) { | 23 function checkResult (event) { |
| 23 var success = true; | |
| 24 | 24 |
| 25 renderedData = event.renderedBuffer.getChannelData(0); | 25 renderedData = event.renderedBuffer.getChannelData(0); |
| 26 // Check that the rendered data is all ones, like the buffer source. | 26 |
| 27 for (k = 0; k < renderedData.length; ++k) { | 27 // Check that the reduction value is 0.0. |
| 28 if (renderedData[k] != 1) { | 28 if (compressor.reduction.value !== 0.0) { |
| 29 success = false; | 29 testFailed("Expected reduction of 0.0, but the value is " + compre
ssor.reduction.value); |
| 30 testFailed("Expected all ones, but sample " + k + " is " + ren
deredData[k]); | |
| 31 break; | |
| 32 } | |
| 33 } | 30 } |
| 34 if (success) | 31 else { |
| 35 testPassed("All samples equal to 1"); | 32 testPassed("Reduction is 0.0"); |
| 33 } |
| 34 |
| 36 finishJSTest(); | 35 finishJSTest(); |
| 37 } | 36 } |
| 38 | 37 |
| 39 function runTest() { | 38 function runTest() { |
| 40 window.jsTestIsAsync = true; | 39 window.jsTestIsAsync = true; |
| 41 | 40 |
| 42 // Create the offline context for the test. | 41 // Create the offline context for the test. |
| 43 context = new OfflineAudioContext(1, testDurationSamples, sampleRate); | 42 context = new OfflineAudioContext(1, testDurationSamples, sampleRate); |
| 44 context.oncomplete = checkResult; | 43 context.oncomplete = checkResult; |
| 45 | 44 |
| 46 // Create the single sample buffer | 45 // Create the constant sample buffer of 0.5 sec. |
| 47 buffer = createConstantBuffer(context, 1, 1); | 46 buffer = createConstantBuffer(context, testDurationSamples / 2, 1); |
| 47 |
| 48 // Create compressor and use default parameters for the compression. |
| 49 compressor = context.createDynamicsCompressor(); |
| 48 | 50 |
| 49 // Create the source and connect it to the destination | 51 // Create the source and connect it to the destination |
| 50 source = context.createBufferSource(); | 52 source = context.createBufferSource(); |
| 51 source.buffer = buffer; | 53 source.buffer = buffer; |
| 52 source.loop = true; | 54 source.connect(compressor); |
| 53 source.connect(context.destination); | 55 compressor.connect(context.destination); |
| 54 source.start(); | 56 source.start(0.0); |
| 55 | 57 |
| 56 // Render it! | 58 // Render it! |
| 57 context.startRendering(); | 59 context.startRendering(); |
| 58 } | 60 } |
| 59 | 61 |
| 60 runTest(); | 62 runTest(); |
| 61 succesfullyParsed = true; | 63 succesfullyParsed = true; |
| 62 </script> | 64 </script> |
| 63 </body> | 65 </body> |
| 64 </html> | 66 </html> |
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Chromium Code Reviews
Issue 645853010:
Make reduction value of dynamics compressor zero when no sources are connected (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git/+/master