| <!doctype html> |
| <meta charset=utf-8> |
| <meta name="timeout" content="long"> |
| <title>RTCRtpParameters encodings</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/webrtc/dictionary-helper.js"></script> |
| <script src="/webrtc/RTCRtpParameters-helper.js"></script> |
| <script src="../webrtc/RTCPeerConnection-helper.js"></script> |
| <script> |
| 'use strict'; |
| |
| // Test is based on the following editor draft: |
| // https://w3c.github.io/webrtc-svc/ |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| const { sender } = pc.addTransceiver('video', { |
| sendEncodings: [{scalabilityMode: 'L1T3'}], |
| }); |
| |
| const param = sender.getParameters(); |
| const encoding = param.encodings[0]; |
| |
| assert_equals(encoding.scalabilityMode, 'L1T3'); |
| |
| encoding.scalabilityMode = 'L1T2'; |
| await sender.setParameters(param); |
| |
| const updatedParam = sender.getParameters(); |
| const updatedEncoding = updatedParam.encodings[0]; |
| |
| assert_equals(updatedEncoding.scalabilityMode, 'L1T2'); |
| }, `Setting and updating scalabilityMode to a legal value should be accepted`); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| const { sender } = pc.addTransceiver('video'); |
| const param = sender.getParameters(); |
| const encoding = param.encodings[0]; |
| assert_true(!('scalabilityMode' in encoding)); |
| }, 'Not setting sendEncodings results in no mode info before negotiation'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| const { sender } = pc.addTransceiver('video', { |
| sendEncodings: [{}], |
| }); |
| const param = sender.getParameters(); |
| const encoding = param.encodings[0]; |
| assert_true(!('scalabilityMode' in encoding)); |
| }, 'Not setting a scalability mode results in no mode set before negotiation'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| assert_throws_dom('OperationError', () => { |
| pc.addTransceiver('video', { |
| sendEncodings: [{scalabilityMode: 'TotalNonsense'}], |
| }); |
| }); |
| }, 'Setting a scalability mode to nonsense throws an exception'); |
| |
| promise_test(async t => { |
| const v = document.createElement('video'); |
| v.autoplay = true; |
| const pc1 = new RTCPeerConnection(); |
| const pc2 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc1.close()); |
| t.add_cleanup(() => pc2.close()); |
| const transceiver = pc1.addTransceiver('video', { |
| sendEncodings: [{ scalabilityMode: 'L3T3' }], |
| }); |
| // Before negotiation, the mode should be preserved. |
| const param = transceiver.sender.getParameters(); |
| const encoding = param.encodings[0]; |
| assert_true('scalabilityMode' in encoding); |
| |
| // If L3T3 is not supported at all, abort test. |
| assert_implements_optional(encoding.scalabilityMode === 'L3T3'); |
| |
| pc2.ontrack = e => { |
| // Pick a codec known to not have L3T3 support. |
| const capabilities = RTCRtpReceiver.getCapabilities('video'); |
| const codec = capabilities.codecs.find(c => c.mimeType === 'video/VP8'); |
| assert_true(codec !== undefined); |
| e.transceiver.setCodecPreferences([codec]); |
| } |
| exchangeIceCandidates(pc1, pc2); |
| await exchangeOfferAnswer(pc1, pc2); |
| const sendParams = pc1.getSenders()[0].getParameters(); |
| assert_not_equals(sendParams.encodings[0].scalabilityMode, 'L3T3'); |
| }, 'L3T3 on VP8 should return something other than L3T3'); |
| </script> |
