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-rw-r--r-- | dom/media/webaudio/test/test_audioParamSetCurveAtTime.html | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_audioParamSetCurveAtTime.html b/dom/media/webaudio/test/test_audioParamSetCurveAtTime.html new file mode 100644 index 0000000000..e21b58bb19 --- /dev/null +++ b/dom/media/webaudio/test/test_audioParamSetCurveAtTime.html @@ -0,0 +1,54 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test AudioParam.linearRampToValue</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <script type="text/javascript" src="webaudio.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> +<pre id="test"> +<script class="testbody" type="text/javascript"> + +var T0 = 0; + +var gTest = { + length: 2048, + numberOfChannels: 1, + createGraph(context) { + var source = context.createConstantSource(); + + var gain = context.createGain(); + gain.gain.setValueCurveAtTime(this.curve, T0, this.duration); + source.connect(gain); + + source.start(0); + return gain; + }, + createExpectedBuffers(context) { + this.duration = 1024 / context.sampleRate; + this.curve = new Float32Array([1.0, 0.5, 0.75, 0.25]); + var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate); + var data = expectedBuffer.getChannelData(0); + var step = 1024 / 3; + for (var i = 0; i < 2048; ++i) { + if (i < step) { + data[i] = 1.0 - 0.5*i/step; + } else if (i < 2*step) { + data[i] = 0.5 + 0.25*(i - step)/step; + } else if (i < 3*step) { + data[i] = 0.75 - 0.5*(i - 2*step)/step; + } else { + data[i] = 0.25; + } + } + return expectedBuffer; + }, +}; + +runTest(); + +</script> +</pre> +</body> +</html> |