2 files changed, 129 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webrtc/protocol/codecs-filtered-by-direction.https.html b/testing/web-platform/tests/webrtc/protocol/codecs-filtered-by-direction.https.html
new file mode 100644
index 0000000000..ed1d65e4b0
--- /dev/null
+++ b/testing/web-platform/tests/webrtc/protocol/codecs-filtered-by-direction.https.html
@@ -0,0 +1,79 @@
+<!doctype html>
+<meta charset=utf-8>
+<meta name="timeout" content="long">
+<title>RTCPeerConnection Codecs in offer get filtered by direction</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../third_party/sdp/sdp.js"></script>
+<script>
+'use strict';
+
+function codecEquals(c1, c2) {
+  return c1.mimeType === c2.mimeType &&
+          c1.sdpFmtpLine === c2.sdpFmtpLine &&
+          c1.clockRate === c2.clockRate &&
+          c1.channels === c2.channels;
+}
+
+function splitCodecs() {
+  const sendCodecs = RTCRtpSender.getCapabilities('video').codecs;
+  const receiveCodecs = RTCRtpReceiver.getCapabilities('video').codecs;
+  const codecs = {
+    sendrecv: [],
+    sendonly: [],
+    recvonly: [],
+  };
+  // Ignore RTX since it is present in capabilities once and has no apt.
+  for (const receiveCodec of receiveCodecs) {
+    if (receiveCodec.mimeType === 'video/rtx') continue;
+    if (sendCodecs.find(sendCodec => codecEquals(sendCodec, receiveCodec))) {
+      codecs.sendrecv.push(receiveCodec);
+    }
+  }
+
+  for (const sendCodec of sendCodecs) {
+    if (sendCodec.mimeType === 'video/rtx') continue;
+    if (!receiveCodecs.find(receiveCodec => codecEquals(sendCodec, receiveCodec))) {
+      codecs.sendonly.push(sendCodec);
+    }
+  }
+  for (const receiveCodec of receiveCodecs) {
+    if (receiveCodec.mimeType === 'video/rtx') continue;
+    if (!sendCodecs.find(sendCodec => codecEquals(sendCodec, receiveCodec))) {
+      codecs.recvonly.push(receiveCodec);
+    }
+  }
+  return codecs;
+}
+
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+
+  const allCodecs = splitCodecs();
+  const transceiver = pc.addTransceiver('video');
+
+  transceiver.direction = 'sendonly'
+  const offer = await pc.createOffer();
+  const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0];
+  const rtpParameters = SDPUtils.parseRtpParameters(mediaSection);
+  const sendonlyCodecs = rtpParameters.codecs.filter(c => c.name !== 'rtx');
+  assert_equals(sendonlyCodecs.length, allCodecs.sendrecv.length + allCodecs.sendonly.length);
+}, 'Codecs get filtered by direction for sendonly');
+
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+
+  const allCodecs = splitCodecs();
+  const transceiver = pc.addTransceiver('video');
+
+  transceiver.direction = 'recvonly'
+  const offer = await pc.createOffer();
+  const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0];
+  const rtpParameters = SDPUtils.parseRtpParameters(mediaSection);
+  const recvonlyCodecs = rtpParameters.codecs.filter(c => c.name !== 'rtx');
+  assert_equals(recvonlyCodecs.length, allCodecs.sendrecv.length + allCodecs.recvonly.length);
+}, 'Codecs get filtered by direction for recvonly');
+
+</script>
diff --git a/testing/web-platform/tests/webrtc/protocol/codecs-subsequent-offer.https.html b/testing/web-platform/tests/webrtc/protocol/codecs-subsequent-offer.https.html
new file mode 100644
index 0000000000..fc9240e950
--- /dev/null
+++ b/testing/web-platform/tests/webrtc/protocol/codecs-subsequent-offer.https.html
@@ -0,0 +1,50 @@
+<!doctype html>
+<meta charset=utf-8>
+<meta name="timeout" content="long">
+<title>RTCPeerConnection Codecs in subsequent offer</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../third_party/sdp/sdp.js"></script>
+<script>
+'use strict';
+
+// A test for https://www.rfc-editor.org/rfc/rfc8829.html#name-subsequent-offers
+// The "m=" line and corresponding "a=rtpmap" and "a=fmtp" lines MUST only include
+// media formats that have not been excluded by the codec preferences of the
+// associated transceiver and also MUST include all currently available formats.
+
+// A VP8-only offer.
+const sdp = `v=0
+o=- 0 3 IN IP4 127.0.0.1
+s=-
+t=0 0
+a=fingerprint:sha-256 A7:24:72:CA:6E:02:55:39:BA:66:DF:6E:CC:4C:D8:B0:1A:BF:1A:56:65:7D:F4:03:AD:7E:77:43:2A:29:EC:93
+m=video 9 RTP/SAVPF 100
+c=IN IP4 0.0.0.0
+a=rtcp-mux
+a=sendrecv
+a=mid:video
+a=rtpmap:100 VP8/90000
+a=setup:actpass
+a=ice-ufrag:ETEn
+a=ice-pwd:OtSK0WpNtpUjkY4+86js7Z/l
+`;
+
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+
+  await pc.setRemoteDescription({type: 'offer', sdp});
+  await pc.setLocalDescription();
+  const transceiver = pc.getTransceivers()[0];
+  assert_not_equals(transceiver.stopped, true);
+  const offer = await pc.createOffer();
+  const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0];
+  const rtpParameters = SDPUtils.parseRtpParameters(mediaSection);
+  const vp8 = rtpParameters.codecs.filter(codec => codec.name === 'VP8');
+  const h264 = rtpParameters.codecs.filter(codec => codec.name === 'H264');
+  assert_greater_than(vp8.length, 0);
+  assert_greater_than(h264.length, 0);
+}, 'A subsequent offer after a VP8-only negotiation includes at least all mandatory to implement codecs');
+
+</script>