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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src=/resources/testdriver.js></script>
<script src=/resources/testdriver-vendor.js></script>
<script src='../mediacapture-streams/permission-helper.js'></script>
<script src="../webrtc/RTCPeerConnection-helper.js"></script>
<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
<script src='./helper.js'></script>
<script>
"use strict";
promise_test(async t => {
const senderReader = await setupLoopbackWithCodecAndGetReader(t, 'VP8');
const result = await senderReader.read();
const metadata = result.value.getMetadata();
// TODO(https://crbug.com/webrtc/14709): When RTCEncodedVideoFrame has a
// constructor, create a new frame from scratch instead of cloning it to
// ensure that none of the metadata was carried over via structuredClone().
// This would allow us to be confident that setMetadata() is doing all the
// work.
//
// At that point, we can refactor the structuredClone() implementation to be
// the same as constructor() + set data + setMetadata() to ensure that
// structuredClone() cannot do things that are not already exposed in
// JavaScript (no secret steps!).
const clone = structuredClone(result.value);
clone.setMetadata(metadata);
const cloneMetadata = clone.getMetadata();
// Encoding related metadata.
assert_equals(cloneMetadata.frameId, metadata.frameId, 'frameId');
assert_array_equals(cloneMetadata.dependencies, metadata.dependencies,
'dependencies');
assert_equals(cloneMetadata.width, metadata.width, 'width');
assert_equals(cloneMetadata.height, metadata.height, 'height');
assert_equals(cloneMetadata.spatialIndex, metadata.spatialIndex,
'spatialIndex');
assert_equals(cloneMetadata.temporalIndex, metadata.temporalIndex,
'temporalIndex');
// RTP related metadata.
// TODO(https://crbug.com/webrtc/14709): This information also needs to be
// settable but isn't - the assertions only pass because structuredClone()
// copies them for us. It would be great if different layers didn't consider
// different subset of the struct as "the metadata". Can we consolidate into a
// single webrtc struct for all metadata?
assert_equals(cloneMetadata.synchronizationSource,
metadata.synchronizationSource, 'synchronizationSource');
assert_array_equals(cloneMetadata.contributingSources,
metadata.contributingSources, 'contributingSources');
assert_equals(cloneMetadata.payloadType, metadata.payloadType, 'payloadType');
}, "[VP8] setMetadata() carries over codec-specific properties");
</script>
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