| <!doctype html> |
| <html> |
| <head> |
| <title>Test Setting of channelCountMode and channelInterpretation</title> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script src="resources/audio-testing.js"></script> |
| </head> |
| |
| <body> |
| <script> |
| // Fairly arbitrary sample rate and number of frames, except the number of |
| // frames should be more than a few render quantums. |
| var sampleRate = 16000; |
| var renderFrames = 10 * 128; |
| |
| var audit = Audit.createTaskRunner(); |
| |
| audit.defineTask("interp", function (taskDone) { |
| var context = new OfflineAudioContext(1, renderFrames, sampleRate); |
| var node = context.createGain(); |
| |
| // Set a new interpretation and verify that it changed. |
| node.channelInterpretation = "discrete"; |
| var value = node.channelInterpretation; |
| Should("node.channelInterpretation", value).beEqualTo("discrete"); |
| node.connect(context.destination); |
| |
| context.startRendering().then(function (buffer) { |
| // After rendering, the value should have been changed. |
| Should("After rendering node.channelInterpretation", |
| node.channelInterpretation) |
| .beEqualTo("discrete"); |
| }).then(taskDone); |
| }); |
| |
| audit.defineTask("mode", function (taskDone) { |
| var context = new OfflineAudioContext(1, renderFrames, sampleRate); |
| var node = context.createGain(); |
| |
| // Set a new mode and verify that it changed. |
| node.channelCountMode = "explicit"; |
| var value = node.channelCountMode; |
| Should("node.channelCountMode", value).beEqualTo("explicit"); |
| node.connect(context.destination); |
| |
| context.startRendering().then(function (buffer) { |
| // After rendering, the value should have been changed. |
| Should("After rendering node.channelCountMode", |
| node.channelCountMode) |
| .beEqualTo("explicit"); |
| }).then(taskDone); |
| }); |
| audit.runTasks(); |
| </script> |
| </body> |
| </html> |
