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| 1 | +<!doctype html> |
| 2 | +<meta charset=utf-8> |
| 3 | +<meta name="timeout" content="long"> |
| 4 | +<title>RTCPeerConnection Codecs in offer get filtered by direction</title> |
| 5 | +<script src="/resources/testharness.js"></script> |
| 6 | +<script src="/resources/testharnessreport.js"></script> |
| 7 | +<script src="../third_party/sdp/sdp.js"></script> |
| 8 | +<script> |
| 9 | +'use strict'; |
| 10 | + |
| 11 | +function codecEquals(c1, c2) { |
| 12 | + return c1.mimeType === c2.mimeType && |
| 13 | + c1.sdpFmtpLine === c2.sdpFmtpLine && |
| 14 | + c1.clockRate === c2.clockRate && |
| 15 | + c1.channels === c2.channels; |
| 16 | +} |
| 17 | + |
| 18 | +function splitCodecs() { |
| 19 | + const sendCodecs = RTCRtpSender.getCapabilities('video').codecs; |
| 20 | + const receiveCodecs = RTCRtpReceiver.getCapabilities('video').codecs; |
| 21 | + const codecs = { |
| 22 | + sendrecv: [], |
| 23 | + sendonly: [], |
| 24 | + recvonly: [], |
| 25 | + }; |
| 26 | + // Ignore RTX since it is present in capabilities once and has no apt. |
| 27 | + for (const sendCodec of sendCodecs) { |
| 28 | + if (sendCodec.mimeType === 'video/rtx') continue; |
| 29 | + if (receiveCodecs.find(receiveCodec => codecEquals(sendCodec, receiveCodec))) { |
| 30 | + codecs.sendrecv.push(sendCodec); |
| 31 | + } |
| 32 | + } |
| 33 | + |
| 34 | + for (const sendCodec of sendCodecs) { |
| 35 | + if (sendCodec.mimeType === 'video/rtx') continue; |
| 36 | + if (!receiveCodecs.find(receiveCodec => codecEquals(sendCodec, receiveCodec))) { |
| 37 | + codecs.sendonly.push(sendCodec); |
| 38 | + } |
| 39 | + } |
| 40 | + for (const receiveCodec of receiveCodecs) { |
| 41 | + if (receiveCodec.mimeType === 'video/rtx') continue; |
| 42 | + if (!sendCodecs.find(sendCodec => codecEquals(sendCodec, receiveCodec))) { |
| 43 | + codecs.recvonly.push(receiveCodec); |
| 44 | + } |
| 45 | + } |
| 46 | + return codecs; |
| 47 | +} |
| 48 | + |
| 49 | +promise_test(async t => { |
| 50 | + const pc = new RTCPeerConnection(); |
| 51 | + t.add_cleanup(() => pc.close()); |
| 52 | + |
| 53 | + const allCodecs = splitCodecs(); |
| 54 | + const transceiver = pc.addTransceiver('video'); |
| 55 | + |
| 56 | + transceiver.direction = 'sendrecv'; |
| 57 | + let offer = await pc.createOffer(); |
| 58 | + let mediaSection = SDPUtils.getMediaSections(offer.sdp)[0]; |
| 59 | + let rtpParameters = SDPUtils.parseRtpParameters(mediaSection); |
| 60 | + const sendrecvCodecs = rtpParameters.codecs.filter(c => c.name !== 'rtx'); |
| 61 | + assert_equals(sendrecvCodecs.length, allCodecs.sendrecv.length); |
| 62 | +}, 'Codecs get filtered by direction for sendrecv'); |
| 63 | + |
| 64 | +promise_test(async t => { |
| 65 | + const pc = new RTCPeerConnection(); |
| 66 | + t.add_cleanup(() => pc.close()); |
| 67 | + |
| 68 | + const allCodecs = splitCodecs(); |
| 69 | + const transceiver = pc.addTransceiver('video'); |
| 70 | + |
| 71 | + transceiver.direction = 'sendonly' |
| 72 | + const offer = await pc.createOffer(); |
| 73 | + const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0]; |
| 74 | + const rtpParameters = SDPUtils.parseRtpParameters(mediaSection); |
| 75 | + const sendonlyCodecs = rtpParameters.codecs.filter(c => c.name !== 'rtx'); |
| 76 | + assert_equals(sendonlyCodecs.length, allCodecs.sendrecv.length + allCodecs.sendonly.length); |
| 77 | +}, 'Codecs get filtered by direction for sendonly'); |
| 78 | + |
| 79 | +promise_test(async t => { |
| 80 | + const pc = new RTCPeerConnection(); |
| 81 | + t.add_cleanup(() => pc.close()); |
| 82 | + |
| 83 | + const allCodecs = splitCodecs(); |
| 84 | + const transceiver = pc.addTransceiver('video'); |
| 85 | + |
| 86 | + transceiver.direction = 'recvonly' |
| 87 | + const offer = await pc.createOffer(); |
| 88 | + const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0]; |
| 89 | + const rtpParameters = SDPUtils.parseRtpParameters(mediaSection); |
| 90 | + const recvonlyCodecs = rtpParameters.codecs.filter(c => c.name !== 'rtx'); |
| 91 | + assert_equals(recvonlyCodecs.length, allCodecs.sendrecv.length + allCodecs.recvonly.length); |
| 92 | +}, 'Codecs get filtered by direction for recvonly'); |
| 93 | + |
| 94 | +</script> |
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