KnowsCompositor.cpp

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "KnowsCompositor.h"

#include "mozilla/layers/ImageBridgeChild.h"

#include "mozilla/ipc/ProtocolUtils.h"

namespace mozilla::layers {

void KnowsCompositor::IdentifyTextureHost(

    const TextureFactoryIdentifier& aIdentifier) {

  auto lock = mData.Lock();

  lock.ref().mTextureFactoryIdentifier = aIdentifier;

  lock.ref().mSyncObject =

      SyncObjectClient::CreateSyncObjectClientForContentDevice(

          aIdentifier.mSyncHandle);

KnowsCompositor::KnowsCompositor()

    : mData("KnowsCompositorMutex"), mSerial(++sSerialCounter) {}

KnowsCompositor::~KnowsCompositor() = default;

KnowsCompositorMediaProxy::KnowsCompositorMediaProxy(

    const TextureFactoryIdentifier& aIdentifier) {

  auto lock = mData.Lock();

  lock.ref().mTextureFactoryIdentifier = aIdentifier;

  // overwrite mSerial's value set by the parent class because we use the same

  // serial as the KnowsCompositor we are proxying.

  mThreadSafeAllocator = ImageBridgeChild::GetSingleton();

  lock.ref().mSyncObject = mThreadSafeAllocator->GetSyncObject();

KnowsCompositorMediaProxy::~KnowsCompositorMediaProxy() = default;

RefPtr<TextureForwarder> KnowsCompositorMediaProxy::GetTextureForwarder() {

  return mThreadSafeAllocator->GetTextureForwarder();

LayersIPCActor* KnowsCompositorMediaProxy::GetLayersIPCActor() {

  return mThreadSafeAllocator->GetLayersIPCActor();

void KnowsCompositorMediaProxy::SyncWithCompositor(

    const Maybe<uint64_t>& aWindowID) {

  mThreadSafeAllocator->SyncWithCompositor(aWindowID);

bool IsSurfaceDescriptorValid(const SurfaceDescriptor& aSurface) {

  return aSurface.type() != SurfaceDescriptor::T__None &&

         aSurface.type() != SurfaceDescriptor::Tnull_t;

}  // namespace mozilla::layers