| <!doctype html> |
| <meta charset=utf-8> |
| <!-- This file contains two tests that wait for 10 seconds each. --> |
| <meta name="timeout" content="long"> |
| <title>RTCRtpReceiver.prototype.getSynchronizationSources</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="RTCPeerConnection-helper.js"></script> |
| <script> |
| 'use strict'; |
| |
| async function initiateSingleTrackCallAndReturnReceiver(t, kind) { |
| const pc1 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc1.close()); |
| const pc2 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc2.close()); |
| |
| const stream = await navigator.mediaDevices.getUserMedia({[kind]:true}); |
| const [track] = stream.getTracks(); |
| t.add_cleanup(() => track.stop()); |
| pc1.addTrack(track, stream); |
| |
| exchangeIceCandidates(pc1, pc2); |
| const trackEvent = await exchangeOfferAndListenToOntrack(t, pc1, pc2); |
| await exchangeAnswer(pc1, pc2); |
| return trackEvent.receiver; |
| } |
| |
| for (const kind of ['audio', 'video']) { |
| promise_test(async t => { |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, kind); |
| await listenForSSRCs(t, receiver); |
| }, '[' + kind + '] getSynchronizationSources() eventually returns a ' + |
| 'non-empty list'); |
| |
| promise_test(async t => { |
| const startTime = performance.now(); |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, kind); |
| const [ssrc] = await listenForSSRCs(t, receiver); |
| assert_equals(typeof ssrc.timestamp, 'number'); |
| assert_true(ssrc.timestamp >= startTime); |
| }, '[' + kind + '] RTCRtpSynchronizationSource.timestamp is a number'); |
| |
| promise_test(async t => { |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, kind); |
| // Wait for packets to start flowing. |
| await listenForSSRCs(t, receiver); |
| // Wait for 10 seconds. |
| await new Promise(resolve => t.step_timeout(resolve, 10000)); |
| let earliestTimestamp = undefined; |
| let latestTimestamp = undefined; |
| for (const ssrc of await listenForSSRCs(t, receiver)) { |
| if (earliestTimestamp == undefined || earliestTimestamp > ssrc.timestamp) |
| earliestTimestamp = ssrc.timestamp; |
| if (latestTimestamp == undefined || latestTimestamp < ssrc.timestamp) |
| latestTimestamp = ssrc.timestamp; |
| } |
| assert_true(latestTimestamp - earliestTimestamp <= 10000); |
| }, '[' + kind + '] getSynchronizationSources() does not contain SSRCs ' + |
| 'older than 10 seconds'); |
| |
| promise_test(async t => { |
| const startTime = performance.timeOrigin + performance.now(); |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, kind); |
| const [ssrc] = await listenForSSRCs(t, receiver); |
| const endTime = performance.timeOrigin + performance.now(); |
| assert_true(startTime <= ssrc.timestamp && ssrc.timestamp <= endTime); |
| }, '[' + kind + '] RTCRtpSynchronizationSource.timestamp is comparable to ' + |
| 'performance.timeOrigin + performance.now()'); |
| |
| promise_test(async t => { |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, kind); |
| const [ssrc] = await listenForSSRCs(t, receiver); |
| assert_equals(typeof ssrc.source, 'number'); |
| }, '[' + kind + '] RTCRtpSynchronizationSource.source is a number'); |
| } |
| |
| promise_test(async t => { |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, 'audio'); |
| const [ssrc] = await listenForSSRCs(t, receiver); |
| assert_equals(typeof ssrc.audioLevel, 'number'); |
| assert_greater_than_equal(ssrc.audioLevel, 0); |
| assert_less_than_equal(ssrc.audioLevel, 1); |
| }, '[audio-only] RTCRtpSynchronizationSource.audioLevel is a number [0, 1]'); |
| |
| // This test only passes if the implementation is sending the RFC 6464 extension |
| // header and the "vad" extension attribute is not "off", otherwise |
| // voiceActivityFlag is absent. TODO: Consider moving this test to an |
| // optional-to-implement subfolder? |
| promise_test(async t => { |
| const receiver = await initiateSingleTrackCallAndReturnReceiver(t, 'audio'); |
| const [ssrc] = await listenForSSRCs(t, receiver); |
| assert_equals(typeof ssrc.voiceActivityFlag, 'boolean'); |
| }, '[audio-only] RTCRtpSynchronizationSource.voiceActivityFlag is a boolean'); |
| |
| </script> |
