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<!DOCTYPE html>
<html>
<head>
<title>RTCPeerConnection Insertable Streams Audio</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src=/resources/testdriver.js></script>
<script src=/resources/testdriver-vendor.js></script>
<script src='../mediacapture-streams/permission-helper.js'></script>
<script src="../webrtc/RTCPeerConnection-helper.js"></script>
<script src="./RTCPeerConnection-insertable-streams.js"></script>
</head>
<body>
<script>
async function testAudioFlow(t, negotiationFunction) {
const caller = new RTCPeerConnection({encodedInsertableStreams:true});
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection({encodedInsertableStreams:true});
t.add_cleanup(() => callee.close());
await setMediaPermission("granted", ["microphone"]);
const stream = await navigator.mediaDevices.getUserMedia({audio:true});
const audioTrack = stream.getAudioTracks()[0];
t.add_cleanup(() => audioTrack.stop());
const audioSender = caller.addTrack(audioTrack)
const senderStreams = audioSender.createEncodedStreams();
const senderReader = senderStreams.readable.getReader();
const senderWriter = senderStreams.writable.getWriter();
const frameInfos = [];
const numFramesPassthrough = 5;
const numFramesReplaceData = 5;
const numFramesModifyData = 5;
const numFramesToSend = numFramesPassthrough + numFramesReplaceData + numFramesModifyData;
const ontrackPromise = new Promise(resolve => {
callee.ontrack = t.step_func(() => {
const audioReceiver = callee.getReceivers().find(r => r.track.kind === 'audio');
assert_not_equals(audioReceiver, undefined);
const receiverStreams =
audioReceiver.createEncodedStreams();
const receiverReader = receiverStreams.readable.getReader();
const receiverWriter = receiverStreams.writable.getWriter();
const maxFramesToReceive = numFramesToSend;
let numVerifiedFrames = 0;
for (let i = 0; i < maxFramesToReceive; i++) {
receiverReader.read().then(t.step_func(result => {
if (frameInfos[numVerifiedFrames] &&
areFrameInfosEqual(result.value, frameInfos[numVerifiedFrames])) {
numVerifiedFrames++;
} else {
// Receiving unexpected frames is an indication that
// frames are not passed correctly between sender and receiver.
assert_unreached("Incorrect frame received");
}
if (numVerifiedFrames == numFramesToSend)
resolve();
}));
}
});
});
exchangeIceCandidates(caller, callee);
await negotiationFunction(caller, callee);
// Pass frames as they come from the encoder.
for (let i = 0; i < numFramesPassthrough; i++) {
const result = await senderReader.read()
frameInfos.push({
data: result.value.data,
timestamp: result.value.timestamp,
type: result.value.type,
metadata: result.value.getMetadata(),
getMetadata() { return this.metadata; }
});
senderWriter.write(result.value);
}
// Replace frame data with arbitrary buffers.
for (let i = 0; i < numFramesReplaceData; i++) {
const result = await senderReader.read()
const buffer = new ArrayBuffer(100);
const int8View = new Int8Array(buffer);
int8View.fill(i);
result.value.data = buffer;
frameInfos.push({
data: result.value.data,
timestamp: result.value.timestamp,
type: result.value.type,
metadata: result.value.getMetadata(),
getMetadata() { return this.metadata; }
});
senderWriter.write(result.value);
}
// Modify frame data.
for (let i = 0; i < numFramesReplaceData; i++) {
const result = await senderReader.read()
const int8View = new Int8Array(result.value.data);
int8View.fill(i);
frameInfos.push({
data: result.value.data,
timestamp: result.value.timestamp,
type: result.value.type,
metadata: result.value.getMetadata(),
getMetadata() { return this.metadata; }
});
senderWriter.write(result.value);
}
return ontrackPromise;
}
promise_test(async t => {
return testAudioFlow(t, exchangeOfferAnswer);
}, 'Frames flow correctly using insertable streams');
promise_test(async t => {
return testAudioFlow(t, exchangeOfferAnswerReverse);
}, 'Frames flow correctly using insertable streams when receiver starts negotiation');
promise_test(async t => {
const caller = new RTCPeerConnection();
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
const stream = await navigator.mediaDevices.getUserMedia({audio:true});
const audioTrack = stream.getAudioTracks()[0];
t.add_cleanup(() => audioTrack.stop());
exchangeIceCandidates(caller, callee);
await exchangeOfferAnswer(caller, callee);
const audioSender = caller.addTrack(audioTrack);
assert_throws_dom("InvalidStateError", () => audioSender.createEncodedStreams());
}, 'RTCRtpSender.createEncodedStream() throws if not requested in PC configuration');
promise_test(async t => {
const caller = new RTCPeerConnection();
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
const stream = await navigator.mediaDevices.getUserMedia({audio:true});
const audioTrack = stream.getAudioTracks()[0];
t.add_cleanup(() => audioTrack.stop());
const audioSender = caller.addTrack(audioTrack);
const ontrackPromise = new Promise(resolve => {
callee.ontrack = t.step_func(() => {
const audioReceiver = callee.getReceivers().find(r => r.track.kind === 'audio');
assert_not_equals(audioReceiver, undefined);
assert_throws_dom("InvalidStateError", () => audioReceiver.createEncodedStreams());
resolve();
});
});
exchangeIceCandidates(caller, callee);
await exchangeOfferAnswer(caller, callee);
return ontrackPromise;
}, 'RTCRtpReceiver.createEncodedStream() throws if not requested in PC configuration');
promise_test(async t => {
const caller = new RTCPeerConnection({encodedInsertableStreams:true});
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
const stream = await navigator.mediaDevices.getUserMedia({audio:true});
const track = stream.getTracks()[0];
t.add_cleanup(() => track.stop());
const sender = caller.addTrack(track)
const streams = sender.createEncodedStreams();
const transformer = new TransformStream({
transform(frame, controller) {
// Inserting the same frame twice will result in failure since the frame
// will be neutered after the first insertion is processed.
controller.enqueue(frame);
controller.enqueue(frame);
}
});
exchangeIceCandidates(caller, callee);
await exchangeOfferAnswer(caller, callee);
await promise_rejects_dom(
t, 'OperationError',
streams.readable.pipeThrough(transformer).pipeTo(streams.writable));
}, 'Enqueuing the same frame twice fails');
</script>
</body>
</html>
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