| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../resources/js-test.js"></script> |
| <script src="resources/audio-testing.js"></script> |
| <script src="resources/compatibility.js"></script> |
| </head> |
| <body> |
| <script> |
| description("Basic tests for AudioBuffer."); |
| |
| var sampleRate = 44100.0 |
| var lengthInSeconds = 2; |
| var numberOfChannels = 4; |
| |
| var context = new AudioContext(); |
| var buffer = context.createBuffer(numberOfChannels, sampleRate * lengthInSeconds, sampleRate); |
| |
| if (buffer.sampleRate === sampleRate) |
| testPassed("sampleRate has been set correctly."); |
| else |
| testFailed("sampleRate should be set correctly."); |
| |
| if (buffer.length === sampleRate * lengthInSeconds) |
| testPassed("length has been set correctly."); |
| else |
| testFailed("length should be set correctly"); |
| |
| if (buffer.duration === lengthInSeconds) |
| testPassed("duration has been set correctly."); |
| else |
| testFailed("duration should be set correctly."); |
| |
| if (buffer.numberOfChannels === numberOfChannels) |
| testPassed("numberOfChannels has been set correctly."); |
| else |
| testFailed("numberOfChannels should be set correctly."); |
| |
| for (var index = 0; index < buffer.numberOfChannels; ++index) { |
| if (buffer.getChannelData(index) instanceof window.Float32Array) |
| testPassed("getChannelData(" + index + ") returns a Float32Array object."); |
| else |
| testFailed("getChannelData(" + index + ") should return a Float32Array object."); |
| } |
| |
| try { |
| buffer.getChannelData(buffer.numberOfChannels); |
| testFailed("Exception should be thrown when index is not less than numberOfChannels."); |
| } catch(e) { |
| testPassed("Exception has been thrown correctly when index is not less than numberOfChannels."); |
| } |
| |
| var buffer2 = context.createBuffer(1, 1000, 24576); |
| var expectedDuration = 1000/24576; |
| |
| if (buffer2.duration == expectedDuration) |
| testPassed("duration has expected accuracy."); |
| else |
| testFailed("duration is " + buffer2.duration + " sec instead of " + expectedDuration + " sec."); |
| </script> |
| |
| </body> |
| </html> |
