Revision 3e41f1333bec75778c0394e4293a807d4e5934fb authored by ffxbld on 14 July 2015, 22:06:18 UTC, committed by ffxbld on 14 July 2015, 22:06:18 UTC
1 parent 57490cb
PImageBridge.ipdl
/* -*- 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 PCompositable;
include protocol PLayer;
include protocol PTexture;
include ProtocolTypes;
include "mozilla/GfxMessageUtils.h";
using struct mozilla::layers::TextureInfo from "mozilla/layers/CompositorTypes.h";
using mozilla::layers::TextureFlags from "mozilla/layers/CompositorTypes.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.
*/
sync protocol PImageBridge
{
manages PCompositable;
manages PTexture;
child:
async ParentAsyncMessages(AsyncParentMessageData[] aMessages);
parent:
sync Update(CompositableOperation[] ops) returns (EditReply[] reply);
async UpdateNoSwap(CompositableOperation[] ops);
// 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 upcomming Stop message and destruction.
// In the child side, the Stop message is not sent right after WillStop,
// 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 Stop, and that after Stop returns, there is no message in
// flight on any side and we can safely destroy the channel and threads.
sync WillStop();
// Second step
sync Stop();
sync PCompositable(TextureInfo aInfo) returns (uint64_t id);
async PTexture(SurfaceDescriptor aSharedData, TextureFlags aTextureFlags);
async ChildAsyncMessages(AsyncChildMessageData[] aMessages);
};
} // namespace
} // namespace
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