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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 LayersSurfaces;
include LayersMessages;
include protocol PTexture;
include ProtocolTypes;
include protocol PMediaSystemResourceManager;
include "mozilla/GfxMessageUtils.h";
include "mozilla/layers/LayersMessageUtils.h";
include "mozilla/layers/WebRenderMessageUtils.h";
using struct mozilla::layers::TextureInfo from "mozilla/layers/CompositorTypes.h";
using mozilla::layers::TextureFlags from "mozilla/layers/CompositorTypes.h";
using mozilla::layers::CompositableHandle from "mozilla/layers/LayersTypes.h";
using mozilla::wr::MaybeExternalImageId from "mozilla/webrender/WebRenderTypes.h";
namespace mozilla {
namespace layers {
/**
* The PImageBridge protocol is used to allow isolated threads or processes to push
* frames directly to the compositor thread/process without relying on the main thread
* which might be too busy dealing with content script.
*/
[ManualDealloc, NeedsOtherPid]
sync protocol PImageBridge
{
manages PTexture;
manages PMediaSystemResourceManager;
child:
async ParentAsyncMessages(AsyncParentMessageData[] aMessages);
async DidComposite(ImageCompositeNotification[] aNotifications);
// Report the number of frames dropped for the given CompositableHost.
async ReportFramesDropped(CompositableHandle aHandle, uint32_t aFrames);
parent:
async Update(CompositableOperation[] ops, OpDestroy[] toDestroy, uint64_t fwdTransactionId);
// First step of the destruction sequence. This puts ImageBridge
// in a state in which it can't send asynchronous messages
// so as to not race with the channel getting closed.
// In the child side, the Closing the channel does not happen right after WillClose,
// it is scheduled in the ImageBridgeChild's message queue in order to ensure
// that all of the messages from the parent side have been received and processed
// before sending closing the channel.
async WillClose();
async PTexture(SurfaceDescriptor aSharedData, ReadLockDescriptor aReadLock, LayersBackend aBackend, TextureFlags aTextureFlags, uint64_t aSerial, MaybeExternalImageId aExternalImageId);
async PMediaSystemResourceManager();
sync NewCompositable(CompositableHandle aHandle, TextureInfo aInfo);
async ReleaseCompositable(CompositableHandle aHandle);
};
} // namespace
} // namespace