| <!doctype html> |
| <html> |
| <head> |
| <script src="../resources/js-test.js"></script> |
| <script src="resources/compatibility.js"></script> |
| <script src="resources/audio-testing.js"></script> |
| <script src="resources/audioparam-testing.js"></script> |
| <title>Test AudioBuffer.getChannelData() Returns the Same Object</title> |
| </head> |
| |
| <body> |
| <script> |
| description("Test AudioBuffer.getChannelData() Returns the Same Object"); |
| window.jsTestIsAsync = true; |
| |
| var sampleRate = 48000; |
| var renderDuration = 0.5; |
| |
| var audit = Audit.createTaskRunner(); |
| |
| audit.defineTask("buffer-eq", function (done) { |
| // Verify that successive calls to getChannelData return the same buffer. |
| var context = new AudioContext(); |
| var channelCount = 2; |
| var frameLength = 1000; |
| var buffer = context.createBuffer(channelCount, frameLength, context.sampleRate); |
| var success = true; |
| |
| for (var c = 0; c < channelCount; ++c) { |
| var a = buffer.getChannelData(c); |
| var b = buffer.getChannelData(c); |
| testPassed("a = buffer.getChannelData(" + c + ")"); |
| testPassed("b = buffer.getChannelData(" + c + ")"); |
| |
| if (a === b) { |
| testPassed("a === b is true"); |
| } else { |
| testFailed("a === b is false"); |
| success = false; |
| } |
| } |
| |
| if (success) |
| testPassed("getChannelData correctly returned the same buffer.\n") |
| else |
| testFailed("getChannelData inccorrectly returned the different buffers.\n") |
| done(); |
| }); |
| |
| audit.defineTask("buffer-not-eq", function (done) { |
| var context = new AudioContext(); |
| var channelCount = 2; |
| var frameLength = 1000; |
| var buffer1 = context.createBuffer(channelCount, frameLength, context.sampleRate); |
| var buffer2 = context.createBuffer(channelCount, frameLength, context.sampleRate); |
| var success = true; |
| |
| for (var c = 0; c < channelCount; ++c) { |
| var a = buffer1.getChannelData(c); |
| var b = buffer2.getChannelData(c); |
| testPassed("a = buffer1.getChannelData(" + c + ")"); |
| testPassed("b = buffer2.getChannelData(" + c + ")"); |
| |
| if (a === b) { |
| testFailed("a === b is true"); |
| success = false; |
| } else { |
| testPassed("a === b is false"); |
| } |
| } |
| |
| if (success) |
| testPassed("getChannelData correctly returned different buffers.\n") |
| else |
| testFailed("getChannelData incorrectly returned the same buffers.\n") |
| done(); |
| }); |
| |
| audit.defineTask("finish", function (done) { |
| finishJSTest(); |
| done(); |
| }); |
| |
| audit.runTasks(); |
| </script> |
| </body> |
| </html> |
