| <!DOCTYPE html> |
| |
| <!-- |
| This is a very basic test to make sure testRunner.setAudioData() works correctly. |
| It generates a 2 seconds long stereo result @44.1KHz |
| The left channel will be a 880Hz tone, while the right will be 440Hz. |
| --> |
| |
| <html> |
| <head> |
| <script src="../resources/js-test.js"></script> |
| <script type="text/javascript" src="resources/audio-testing.js"></script> |
| |
| </head> |
| <body> |
| |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| description("Tests basic audio test infrastructure: specifically testRunner.setAudioData()"); |
| |
| var sampleRate = 44100.0; |
| var lengthInSeconds = 2; |
| |
| function generateSinWave(audioBuffer) { |
| var n = audioBuffer.length; |
| var channelL = audioBuffer.getChannelData(0); |
| var channelR = audioBuffer.getChannelData(1); |
| var sampleRate = audioBuffer.sampleRate; |
| |
| for (var i = 0; i < n; ++i) { |
| channelL[i] = Math.sin(880.0 * 2.0*Math.PI * i / sampleRate); |
| channelR[i] = Math.sin(440.0 * 2.0*Math.PI * i / sampleRate); |
| } |
| } |
| |
| function runTest() { |
| if (!window.testRunner) |
| return; |
| |
| var context = new AudioContext(); |
| var audioBuffer = context.createBuffer(2, lengthInSeconds * sampleRate, sampleRate); |
| |
| generateSinWave(audioBuffer); |
| |
| var audioData = createAudioData(audioBuffer); |
| testRunner.setAudioData(audioData); |
| |
| testRunner.notifyDone(); |
| } |
| |
| runTest(); |
| |
| </script> |
| |
| |
| <body> |
| </body> |
| </html> |
