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<!doctype html>
<meta charset=utf-8>
<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>
'use strict';
// Test is based on the following editor draft:
// https://w3c.github.io/webrtc-svc/
// Get the first encoding in param.encodings.
// Asserts that param.encodings has at least one element.
function getFirstEncoding(param) {
const { encodings } = param;
assert_equals(encodings.length, 1);
return encodings[0];
}
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 = getFirstEncoding(param);
assert_equals(encoding.scalabilityMode, 'L1T3');
}, `Setting scalabilityMode to a legal value should be accepted`);
promise_test(async t => {
const capabilities = RTCRtpSender.getCapabilities('video');
var svcSupported = false;
for (const codec of capabilities.codecs) {
if ('scalabilityModes' in codec && codec.scalabilityModes.length > 0) {
svcSupported = true;
}
}
assert_true(svcSupported);
}, `Sender capabilities should include at least some scalability modes`);
</script>
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