| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
| |
| <!-- |
| Create an oscillator of each type and verify that the type is set correctly. |
| --> |
| <html> |
| <head> |
| <script type="text/javascript" src="resources/audio-testing.js"></script> |
| <script type="text/javascript" src="../resources/js-test.js"></script> |
| </head> |
| |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| description("Basic test of setting Oscillator node types."); |
| |
| var sampleRate = 44100; |
| var renderLengthSeconds = 0.25; |
| |
| var oscTypes = [{type: "sine", name: "SINE"}, |
| {type: "square", name: "SQUARE"}, |
| {type: "sawtooth", name: "SAWTOOTH"}, |
| {type: "triangle", name: "TRIANGLE"}, |
| {type: "custom", name: "CUSTOM"}]; |
| |
| function runTest() |
| { |
| window.jsTestIsAsync = true; |
| |
| // Create offline audio context. |
| var context = new webkitOfflineAudioContext(2, sampleRate * renderLengthSeconds, sampleRate); |
| var osc = context.createOscillator(); |
| |
| // Set each possible oscillator type (except custom) and verify that the type is correct. |
| // Here we're setting the type using WebIDL enum values which are strings. |
| for (var k = 0; k < oscTypes.length - 1; ++k) { |
| osc.type = oscTypes[k].type; |
| if (osc.type == oscTypes[k].type) |
| testPassed("Oscillator correctly set to " + oscTypes[k].name + " type."); |
| else |
| testFailed("Oscillator set to " + oscTypes[k].name + " type, but returns " + oscTypes[osc.type].name + " type."); |
| } |
| |
| // Now set a custom oscillator |
| var coeffA = new Float32Array([0, 1, 0.5]); |
| var coeffB = new Float32Array([0, 0, 0]); |
| var wave = context.createPeriodicWave(coeffA, coeffB); |
| osc.setPeriodicWave(wave); |
| if (osc.type == "custom") |
| testPassed("Oscillator correctly set to CUSTOM type using setPeriodicWave."); |
| else |
| testFailed("Oscillator set to CUSTOM type, but returns " + oscTypes[osc.type].name + " type."); |
| |
| // Try setting some invalid types |
| try { |
| osc.type = "sine"; |
| osc.type = "custom"; |
| testFailed("Directly setting oscillator type to custom did not throw exception."); |
| } catch (e) { |
| testPassed("Directly setting oscillator type to custom correctly throws exception."); |
| } |
| |
| // Check that we don't throw an exception for illegal .type values as per WebIDL. |
| shouldNotThrowException(function() { osc.type = "xyz12349jfksd"; }, "Setting .type to illegal string value"); |
| shouldNotThrowException(function() { osc.type = new Float32Array(1); }, "Setting .type to illegal type"); |
| |
| finishJSTest(); |
| } |
| |
| runTest(); |
| successfullyParsed = true; |
| |
| </script> |
| </body> |
| </html> |
