| <!doctype html> |
| <meta charset=utf-8> |
| <title>RTCPeerConnection.prototype.addTrack</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="RTCPeerConnection-helper.js"></script> |
| <script> |
| 'use strict'; |
| |
| // Test is based on the following editor draft: |
| // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html |
| |
| // The following helper functions are called from RTCPeerConnection-helper.js: |
| // getNoiseStream() |
| |
| /* |
| 5.1. RTCPeerConnection Interface Extensions |
| partial interface RTCPeerConnection { |
| ... |
| sequence<RTCRtpSender> getSenders(); |
| sequence<RTCRtpReceiver> getReceivers(); |
| sequence<RTCRtpTransceiver> getTransceivers(); |
| RTCRtpSender addTrack(MediaStreamTrack track, |
| MediaStream... streams); |
| RTCRtpTransceiver addTransceiver((MediaStreamTrack or DOMString) trackOrKind, |
| optional RTCRtpTransceiverInit init); |
| }; |
| |
| Note |
| While addTrack checks if the MediaStreamTrack given as an argument is |
| already being sent to avoid sending the same MediaStreamTrack twice, |
| the other ways do not, allowing the same MediaStreamTrack to be sent |
| several times simultaneously. |
| */ |
| |
| /* |
| 5.1. addTrack |
| 4. If connection's [[isClosed]] slot is true, throw an InvalidStateError. |
| */ |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const stream = await getNoiseStream({ audio: true }); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| |
| pc.close(); |
| assert_throws('InvalidStateError', () => pc.addTrack(track, stream)) |
| }, 'addTrack when pc is closed should throw InvalidStateError'); |
| |
| /* |
| 5.1. addTrack |
| 8. If sender is null, run the following steps: |
| 1. Create an RTCRtpSender with track and streams and let sender be |
| the result. |
| 2. Create an RTCRtpReceiver with track.kind as kind and let receiver |
| be the result. |
| 3. Create an RTCRtpTransceiver with sender and receiver and let |
| transceiver be the result. |
| 4. Add transceiver to connection's set of transceivers. |
| */ |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const stream = await getNoiseStream({ audio: true }); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| |
| const sender = pc.addTrack(track); |
| |
| assert_true(sender instanceof RTCRtpSender, |
| 'Expect sender to be instance of RTCRtpSender'); |
| |
| assert_equals(sender.track, track, |
| `Expect sender's track to be the added track`); |
| |
| const transceivers = pc.getTransceivers(); |
| assert_equals(transceivers.length, 1, |
| 'Expect only one transceiver with sender added'); |
| |
| const [transceiver] = transceivers; |
| assert_equals(transceiver.sender, sender); |
| |
| assert_array_equals([sender], pc.getSenders(), |
| 'Expect only one sender with given track added'); |
| |
| const { receiver } = transceiver; |
| assert_equals(receiver.track.kind, 'audio'); |
| assert_array_equals([transceiver.receiver], pc.getReceivers(), |
| 'Expect only one receiver associated with transceiver added'); |
| }, 'addTrack with single track argument and no stream should succeed'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const stream = await getNoiseStream({ audio: true }); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| |
| const sender = pc.addTrack(track, stream); |
| |
| assert_true(sender instanceof RTCRtpSender, |
| 'Expect sender to be instance of RTCRtpSender'); |
| |
| assert_equals(sender.track, track, |
| `Expect sender's track to be the added track`); |
| }, 'addTrack with single track argument and single stream should succeed'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const stream = await getNoiseStream({ audio: true }); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| |
| const stream2 = new MediaStream([track]); |
| const sender = pc.addTrack(track, stream, stream2); |
| |
| assert_true(sender instanceof RTCRtpSender, |
| 'Expect sender to be instance of RTCRtpSender'); |
| |
| assert_equals(sender.track, track, |
| `Expect sender's track to be the added track`); |
| }, 'addTrack with single track argument and multiple streams should succeed'); |
| |
| /* |
| 5.1. addTrack |
| 5. Let senders be the result of executing the CollectSenders algorithm. |
| If an RTCRtpSender for track already exists in senders, throw an |
| InvalidAccessError. |
| */ |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const stream = await getNoiseStream({ audio: true }); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| |
| pc.addTrack(track, stream); |
| assert_throws('InvalidAccessError', () => pc.addTrack(track, stream)); |
| }, 'Adding the same track multiple times should throw InvalidAccessError'); |
| |
| /* |
| 5.1. addTrack |
| 6. The steps below describe how to determine if an existing sender can |
| be reused. |
| |
| If any RTCRtpSender object in senders matches all the following |
| criteria, let sender be that object, or null otherwise: |
| - The sender's track is null. |
| - The transceiver kind of the RTCRtpTransceiver, associated with |
| the sender, matches track's kind. |
| - The sender has never been used to send. More precisely, the |
| RTCRtpTransceiver associated with the sender has never had a |
| currentDirection of sendrecv or sendonly. |
| 7. If sender is not null, run the following steps to use that sender: |
| 1. Set sender.track to track. |
| 3. Enable sending direction on the RTCRtpTransceiver associated |
| with sender. |
| */ |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const transceiver = pc.addTransceiver('audio', { direction: 'recvonly' }); |
| assert_equals(transceiver.sender.track, null); |
| assert_equals(transceiver.direction, 'recvonly'); |
| |
| const stream = await navigator.mediaDevices.getUserMedia({audio: true}); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| const sender = pc.addTrack(track); |
| |
| assert_equals(sender, transceiver.sender); |
| assert_equals(sender.track, track); |
| assert_equals(transceiver.direction, 'sendrecv'); |
| assert_array_equals([sender], pc.getSenders()); |
| }, 'addTrack with existing sender with null track, same kind, and recvonly direction should reuse sender'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const transceiver = pc.addTransceiver('audio'); |
| assert_equals(transceiver.sender.track, null); |
| assert_equals(transceiver.direction, 'sendrecv'); |
| |
| const stream = await navigator.mediaDevices.getUserMedia({audio: true}); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| const sender = pc.addTrack(track); |
| |
| assert_equals(sender.track, track); |
| assert_equals(sender, transceiver.sender); |
| }, 'addTrack with existing sender that has not been used to send should reuse the sender'); |
| |
| 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}); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| const transceiver = caller.addTransceiver(track); |
| { |
| const offer = await caller.createOffer(); |
| await caller.setLocalDescription(offer); |
| await callee.setRemoteDescription(offer); |
| const answer = await callee.createAnswer(); |
| await callee.setLocalDescription(answer); |
| await caller.setRemoteDescription(answer); |
| } |
| assert_equals(transceiver.currentDirection, 'sendonly'); |
| |
| caller.removeTrack(transceiver.sender); |
| { |
| const offer = await caller.createOffer(); |
| await caller.setLocalDescription(offer); |
| await callee.setRemoteDescription(offer); |
| const answer = await callee.createAnswer(); |
| await callee.setLocalDescription(answer); |
| await caller.setRemoteDescription(answer); |
| } |
| assert_equals(transceiver.direction, 'recvonly'); |
| assert_equals(transceiver.currentDirection, 'inactive'); |
| |
| // |transceiver.sender| is currently not used for sending, but it should not |
| // be reused because it has been used for sending before. |
| const sender = caller.addTrack(track); |
| assert_true(sender != null); |
| assert_not_equals(sender, transceiver.sender); |
| }, 'addTrack with existing sender that has been used to send should create new sender'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const transceiver = pc.addTransceiver('video', { direction: 'recvonly' }); |
| assert_equals(transceiver.sender.track, null); |
| assert_equals(transceiver.direction, 'recvonly'); |
| |
| const stream = await navigator.mediaDevices.getUserMedia({audio: true}); |
| t.add_cleanup(() => stream.getTracks().forEach(track => track.stop())); |
| const [track] = stream.getTracks(); |
| const sender = pc.addTrack(track); |
| |
| assert_equals(sender.track, track); |
| assert_not_equals(sender, transceiver.sender); |
| |
| const senders = pc.getSenders(); |
| assert_equals(senders.length, 2, |
| 'Expect 2 senders added to connection'); |
| |
| assert_true(senders.includes(sender), |
| 'Expect senders list to include sender'); |
| |
| assert_true(senders.includes(transceiver.sender), |
| `Expect senders list to include first transceiver's sender`); |
| }, 'addTrack with existing sender with null track, different kind, and recvonly direction should create new sender'); |
| |
| /* |
| TODO |
| 5.1. addTrack |
| 3. Let streams be a list of MediaStream objects constructed from the |
| method's remaining arguments, or an empty list if the method was |
| called with a single argument. |
| 6. The steps below describe how to determine if an existing sender can |
| be reused. Doing so will cause future calls to createOffer and |
| createAnswer to mark the corresponding media description as sendrecv |
| or sendonly and add the MSID of the track added, as defined in [JSEP] |
| (section 5.2.2. and section 5.3.2.). |
| |
| Non-Testable |
| 5.1. addTrack |
| 7. If sender is not null, run the following steps to use that sender: |
| 2. Set sender's [[associated MediaStreams]] to streams. |
| |
| Tested in RTCPeerConnection-onnegotiationneeded.html: |
| 5.1. addTrack |
| 10. Update the negotiation-needed flag for connection. |
| |
| */ |
| </script> |
