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61 lines
2.0 KiB
Plaintext
61 lines
2.0 KiB
Plaintext
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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include LayersSurfaces;
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include LayersMessages;
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include protocol PCompositable;
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include protocol PLayer;
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include protocol PTexture;
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include ProtocolTypes;
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include "mozilla/GfxMessageUtils.h";
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using struct mozilla::layers::TextureInfo from "mozilla/layers/CompositorTypes.h";
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using mozilla::layers::TextureFlags from "mozilla/layers/CompositorTypes.h";
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namespace mozilla {
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namespace layers {
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/**
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* The PImageBridge protocol is used to allow isolated threads or processes to push
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* frames directly to the compositor thread/process without relying on the main thread
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* which might be too busy dealing with content script.
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*/
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intr protocol PImageBridge
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{
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manages PCompositable;
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manages PTexture;
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child:
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async ParentAsyncMessages(AsyncParentMessageData[] aMessages);
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parent:
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sync Update(CompositableOperation[] ops) returns (EditReply[] reply);
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async UpdateNoSwap(CompositableOperation[] ops);
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// First step of the destruction sequence. This puts ImageBridge
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// in a state in which it can't send asynchronous messages
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// so as to not race with the upcomming Stop message and destruction.
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// In the child side, the Stop message is not sent right after WillStop,
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// it is scheduled in the ImageBridgeChild's message queue in order to ensure
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// that all of the messages from the parent side have been received and processed
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// before sending Stop, and that after Stop returns, there is no message in
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// flight on any side and we can safely destroy the channel and threads.
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sync WillStop();
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// Second step
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sync Stop();
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sync PCompositable(TextureInfo aInfo) returns (uint64_t id);
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async PTexture(SurfaceDescriptor aSharedData, TextureFlags aTextureFlags);
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async ChildAsyncMessages(AsyncChildMessageData[] aMessages);
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};
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} // namespace
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} // namespace
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