blob: 6dd4ecdd6df32e3b851e1739986d05196302be59 [file] [log] [blame]
<!DOCTYPE html>
<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 ScriptProcessorNode.");
var sampleRate = 44100.0;
var outputChannels = 6;
// For the current implementation of ScriptProcessorNode, when it works with OfflineAudioContext (which runs much faster
// than real-time) the event.inputBuffer might be overwrite again before onaudioprocess ever get chance to be called.
// We carefully arrange the renderLengthInFrames and bufferSize to have exactly the same value to avoid this issue.
var renderLengthInFrames = 512;
var bufferSize = 512;
var context;
function createBuffer(context, length) {
var audioBuffer = context.createBuffer(2, length, sampleRate);
var n = audioBuffer.length;
var dataL = audioBuffer.getChannelData(0);
var dataR = audioBuffer.getChannelData(1);
for (var i = 0; i < n; ++i) {
dataL[i] = -1;
dataR[i] = 1;
}
return audioBuffer;
}
function processAudioData(event) {
buffer = event.outputBuffer;
if (buffer.numberOfChannels != outputChannels)
testFailed("numberOfOutputChannels doesn't match!");
if (buffer.length != bufferSize)
testFailed("numberOfOutputChannels doesn't match!");
buffer = event.inputBuffer;
var bufferDataL = buffer.getChannelData(0);
var bufferDataR = buffer.getChannelData(1);
var success = true;
// Go through every sample and make sure it's all -1 for the left-channel, and all +1 for the right-channel.
for (var i = 0; i < buffer.length; ++i) {
if (bufferDataL[i] != -1 || bufferDataR[i] != 1) {
success = false;
break;
}
}
if (success) {
testPassed("onaudioprocess was called with correct data.");
} else {
testFailed("onaudioprocess was called with wrong data.");
}
}
function doBufferSizeTest(size) {
try {
var jsnode = context.createScriptProcessor(size, 1, 1);
testPassed("Successfully created ScriptProcessorNode with bufferSize = " + size + ".");
} catch(e) {
testFailed("Failed to create ScriptProcessorNode with bufferSize = " + size + ".");
}
}
function runTest() {
window.jsTestIsAsync = true;
// Create offline audio context.
context = new webkitOfflineAudioContext(2, renderLengthInFrames, sampleRate);
try {
var jsnode = context.createScriptProcessor(512, 0, 0);
testFailed("Exception should be thrown when both numberOfInputChannels and numberOfOutputChannels are zero.");
} catch(e) {
testPassed("Exception was thrown when both numberOfInputChannels and numberOfOutputChannels are zero.");
}
try {
var jsnode = context.createScriptProcessor(512, 1, 0);
testPassed("Successfully created ScriptProcessorNode with numberOfInputChannels = 1 and numberOfOutputChannels = 0.");
} catch(e) {
testFailed("Exception should not be thrown when numberOfInputChannels = 1 and numberOfOutputChannels = 0.");
}
try {
var jsnode = context.createScriptProcessor(512, 2, 0);
testPassed("Successfully created ScriptProcessorNode with numberOfInputChannels = 2 and numberOfOutputChannels = 0.");
} catch(e) {
testFailed("Exception should not be thrown when numberOfInputChannels = 2 and numberOfOutputChannels = 0.");
}
try {
var jsnode = context.createScriptProcessor(512, 0, 1);
testPassed("Successfully created ScriptProcessorNode with numberOfInputChannels = 0 and numberOfOutputChannels = 1.");
} catch(e) {
testFailed("Exception should not be thrown when numberOfInputChannels = 0 and numberOfOutputChannels = 1.");
}
try {
var jsnode = context.createScriptProcessor(512, 0, 2);
testPassed("Successfully created ScriptProcessorNode with numberOfInputChannels = 0 and numberOfOutputChannels = 2.");
} catch(e) {
testFailed("Exception should not be thrown when numberOfInputChannels = 0 and numberOfOutputChannels = 2.");
}
try {
var jsnode = context.createScriptProcessor(511, 1, 1);
testFailed("Exception should be thrown for illegal bufferSize.");
} catch(e) {
testPassed("Exception was thrown for illegal bufferSize.");
}
doBufferSizeTest(0);
doBufferSizeTest(256);
doBufferSizeTest(512);
doBufferSizeTest(1024);
doBufferSizeTest(2048);
doBufferSizeTest(4096);
doBufferSizeTest(8192);
doBufferSizeTest(16384);
var sourceBuffer = createBuffer(context, renderLengthInFrames);
var bufferSource = context.createBufferSource();
bufferSource.buffer = sourceBuffer;
var jsnode = context.createScriptProcessor(bufferSize, 2, outputChannels);
bufferSource.connect(jsnode);
jsnode.connect(context.destination);
jsnode.onaudioprocess = processAudioData;
bufferSource.start(0);
context.oncomplete = finishJSTest;
context.startRendering();
}
runTest();
</script>
</body>
</html>