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Test Info:
<!DOCTYPE HTML>
<html>
<head>
<script type="application/javascript" src="pc.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
createHTML({
bug: "1017888",
title: "Renegotiation: remove then add audio track"
});
runNetworkTest(function (options) {
options = options || { };
options.bundle = false;
const test = new PeerConnectionTest(options);
const audioContext = new AudioContext();
// Start a tone so that the gUM call will record something even with
// --use-test-media-devices.
const tone = new LoopbackTone(audioContext, TEST_AUDIO_FREQ);
tone.start();
let originalTrack;
addRenegotiation(test.chain,
[
function PC_REMOTE_FIND_RECEIVER(test) {
is(test.pcRemote._pc.getReceivers().length, 1,
"pcRemote should have one receiver");
originalTrack = test.pcRemote._pc.getReceivers()[0].track;
},
function PC_LOCAL_REMOVE_AUDIO_TRACK(test) {
// The new track's pipeline will start with a packet count of
// 0, but the remote side will keep its old pipeline and packet
// count.
test.pcLocal.disableRtpCountChecking = true;
return test.pcLocal.removeSender(0);
},
function PC_LOCAL_ADD_AUDIO_TRACK(test) {
return test.pcLocal.getAllUserMediaAndAddStreams([{audio: true}]);
},
function PC_LOCAL_EXPECT_ICE_CHECKING(test) {
test.pcLocal.expectIceChecking();
},
function PC_REMOTE_EXPECT_ICE_CHECKING(test) {
test.pcRemote.expectIceChecking();
},
],
[
function PC_REMOTE_CHECK_ADDED_TRACK(test) {
is(test.pcRemote._pc.getTransceivers().length, 2,
"pcRemote should have two transceivers");
const track = test.pcRemote._pc.getTransceivers()[1].receiver.track;
const analyser = new AudioStreamAnalyser(
new AudioContext(), new MediaStream([track]));
const freq = analyser.binIndexForFrequency(TEST_AUDIO_FREQ);
return analyser.waitForAnalysisSuccess(arr => arr[freq] > 200);
},
function PC_REMOTE_CHECK_REMOVED_TRACK(test) {
is(test.pcRemote._pc.getTransceivers().length, 2,
"pcRemote should have two transceivers");
const track = test.pcRemote._pc.getTransceivers()[0].receiver.track;
const analyser = new AudioStreamAnalyser(
new AudioContext(), new MediaStream([track]));
const freq = analyser.binIndexForFrequency(TEST_AUDIO_FREQ);
return analyser.waitForAnalysisSuccess(arr => arr[freq] < 50);
}
]
);
test.chain.insertAfterEach('PC_LOCAL_CREATE_OFFER',
PC_LOCAL_REMOVE_BUNDLE_FROM_OFFER);
test.setMediaConstraints([{audio: true}], [{audio: true}]);
return test.run()
.finally(() => tone.stop());
});
</script>
</pre>
</body>
</html>