WebKit export of https://bugs.webkit.org/show_bug.cgi?id=215567 (#25360)
diff --git a/webrtc/RTCRtpTransceiver-setCodecPreferences.html b/webrtc/RTCRtpTransceiver-setCodecPreferences.html index f79c43b..a028246 100644 --- a/webrtc/RTCRtpTransceiver-setCodecPreferences.html +++ b/webrtc/RTCRtpTransceiver-setCodecPreferences.html
@@ -92,7 +92,56 @@ } }); assert_true(tried, 'VP8 video codec was found and tried'); - }, `setCodecPreferences() with only one video codec should succeed`); + }, `setCodecPreferences() with only VP8 should succeed`); + + test(() => { + const pc = new RTCPeerConnection(); + const transceiver = pc.addTransceiver('video'); + const capabilities = RTCRtpSender.getCapabilities('video'); + const { codecs } = capabilities; + // This test verifies that the mandatory H264 codec is present + // and can be set. + let tried = false; + codecs.forEach(codec => { + if (codec.mimeType.toLowerCase() === 'video/h264') { + transceiver.setCodecPreferences([codecs[0]]); + tried = true; + } + }); + assert_true(tried, 'VP8 video codec was found and tried'); + }, `setCodecPreferences() with only H264 should succeed`); + + async function getRTPMapLinesWithCodecAsFirst(firstCodec) + { + const capabilities = RTCRtpSender.getCapabilities('video').codecs; + capabilities.forEach((codec, idx) => { + if (codec.mimeType === firstCodec) { + capabilities.splice(idx, 1); + capabilities.unshift(codec); + } + }); + + const pc = new RTCPeerConnection(); + const transceiver = pc.addTransceiver('video'); + transceiver.setCodecPreferences(capabilities); + const offer = await pc.createOffer(); + + return offer.sdp.split('\r\n').filter(line => line.indexOf("a=rtpmap") === 0); + } + + promise_test(async () => { + const lines = await getRTPMapLinesWithCodecAsFirst('video/H264'); + + assert_greater_than(lines.length, 1); + assert_true(lines[0].indexOf("H264") !== -1, "H264 should be the first codec"); + }, `setCodecPreferences() should allow setting H264 as first codec`); + + promise_test(async () => { + const lines = await getRTPMapLinesWithCodecAsFirst('video/VP8'); + + assert_greater_than(lines.length, 1); + assert_true(lines[0].indexOf("VP8") !== -1, "VP8 should be the first codec"); + }, `setCodecPreferences() should allow setting VP8 as first codec`); test(() => { const pc = new RTCPeerConnection(); 