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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /dom/media/webaudio/test/test_delayNodeTailIncrease.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/webaudio/test/test_delayNodeTailIncrease.html')
| -rw-r--r-- | dom/media/webaudio/test/test_delayNodeTailIncrease.html | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_delayNodeTailIncrease.html b/dom/media/webaudio/test/test_delayNodeTailIncrease.html new file mode 100644 index 000000000..751602824 --- /dev/null +++ b/dom/media/webaudio/test/test_delayNodeTailIncrease.html @@ -0,0 +1,71 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test increasing delay of DelayNode after input finishes</title> + <script type="text/javascript" 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"> + +SimpleTest.waitForExplicitFinish(); + +const signalLength = 100; +const bufferSize = 1024; +// Delay should be long enough to allow CC to run +const delayBufferCount = 50; +const delayLength = delayBufferCount * bufferSize + 700; + +var count = 0; + +function applySignal(buffer, offset) { + for (var i = 0; i < signalLength; ++i) { + buffer.getChannelData(0)[offset + i] = Math.cos(Math.PI * i / signalLength); + } +} + +function onAudioProcess(e) { + switch(count) { + case 5: + SpecialPowers.forceGC(); + SpecialPowers.forceCC(); + break; + case delayBufferCount: + var offset = delayLength - count * bufferSize; + var ctx = e.target.context; + var expected = ctx.createBuffer(1, bufferSize, ctx.sampleRate); + applySignal(expected, offset); + compareBuffers(e.inputBuffer, expected); + SimpleTest.finish(); + } + count++; +} + +function startTest() { + var ctx = new AudioContext(); + var processor = ctx.createScriptProcessor(bufferSize, 1, 0); + processor.onaudioprocess = onAudioProcess; + + // Switch on delay at a time in the future. + var delayDuration = delayLength / ctx.sampleRate; + var delayStartTime = (delayLength - bufferSize) / ctx.sampleRate; + var delay = ctx.createDelay(delayDuration); + delay.delayTime.setValueAtTime(delayDuration, delayStartTime); + delay.connect(processor); + + // Short signal that finishes before switching to long delay + var buffer = ctx.createBuffer(1, signalLength, ctx.sampleRate); + applySignal(buffer, 0); + var source = ctx.createBufferSource(); + source.buffer = buffer; + source.start(); + source.connect(delay); +}; + +startTest(); +</script> +</pre> +</body> +</html> |