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<!DOCTYPE HTML>
<html>
<head>
<title>Test MediaRecorder Record AudioContext Node</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<script type="text/javascript" src="manifest.js"></script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=968109">Mozilla Bug 968109</a>
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
function setUpSource(contextType, nodeType) {
// Use contextType to choose offline or real-time context.
var context = contextType === 'offline'?
new OfflineAudioContext(2 , 80920, 44100) : new AudioContext();
var buffer = context.createBuffer(2, 80920, context.sampleRate);
for (var i = 0; i < 80920; ++i) {
buffer.getChannelData(0)[i] = Math.sin(1000 * 2 * Math.PI * i / context.sampleRate);
buffer.getChannelData(1)[i] = Math.sin(1000 * 2 * Math.PI * i / context.sampleRate);
}
var source = context.createBufferSource();
source.buffer = buffer;
source.loop = true;
source.start(0);
// nodeType decides which node in graph should be the source of recording.
var node;
if (nodeType === 'source') {
node = source;
} else if (nodeType === 'splitter') {
var splitter = context.createChannelSplitter();
source.connect(splitter);
node = splitter;
} else if (nodeType == 'destination') {
source.connect(context.destination);
node = context.destination;
}
// Explicitly start offline context.
if (contextType === 'offline') {
context.startRendering();
}
return node;
}
function testRecord(source, done) {
ok(source, 'source node should be ok');
var recorder;
var didThrow = false;
try {
recorder = new MediaRecorder(source);
} catch (e) {
didThrow = true;
}
ok(!didThrow, 'MediaRecorder(AudioNode) should be visible after pref turned on');
recorder.onwarning = function() {
ok(false, 'should not fire onwarning');
};
recorder.onerror = function() {
ok(false, 'should not fire onerror');
};
recorder.onstop = function() {
is(recorder.state, 'inactive', 'state should become "inactive" after calling stop()');
done();
};
recorder.ondataavailable = function (e) {
if (recorder.state == 'recording') {
is('audio/ogg', recorder.mimeType, 'mimetype should be audio/ogg, not ' + recorder.mimeType);
ok(e.data && e.data.size > 0, 'should get data and its length should be > 0');
recorder.stop();
}
};
try {
recorder.start(1000);
is('recording', recorder.state, 'state should become "recording" after calling start()');
} catch (e) {
didThrow = true;
}
ok(!didThrow, 'start() should succeed');
}
addLoadEvent(function() {
var src = setUpSource();
var recorder;
var didThrow = false;
try {
recorder = new MediaRecorder(src);
} catch (e) {
didThrow = true;
}
ok(didThrow, 'MediaRecorder(AudioNode) should be hidden behind a pref');
SpecialPowers.pushPrefEnv({"set": [[ 'media.recorder.audio_node.enabled', true ]]},
function () {
// Test with various context and source node types.
var done1 = new Promise(function (resolve, reject) {
testRecord(setUpSource('', 'source'), resolve);
});
var done2 = new Promise(function (resolve, reject) {
testRecord(setUpSource('', 'splitter'), resolve);
});
var done3 = new Promise(function (resolve, reject) {
testRecord(setUpSource('offline', 'destination'), resolve);
});
// Finish test after all is done.
Promise.all([done1, done2, done3]).then(
function () { SimpleTest.finish(); }
);
});
});
</script>
</pre>
</body>
</html>
|
