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61 lines
2.1 KiB
Plaintext
61 lines
2.1 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 PGrallocBuffer;
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include protocol PCompositable;
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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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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 PGrallocBuffer;
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manages PTexture;
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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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// Allocates a gralloc buffer that may not suitable to use with
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// gfxImageSurface but allows hardware decoder to write to the
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// buffer directly. The format is a enum defined in
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// system/graphics.h and the usage is the GraphicBuffer usage
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// flag. See GraphicBuffer.h and gralloc.h.
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sync PGrallocBuffer(IntSize size, uint32_t format, uint32_t usage)
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returns (MaybeMagicGrallocBufferHandle handle);
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// First step of the destruction sequence. This puts all the ImageContainerParents
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// in a state in which they can't send asynchronous messages to their child
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// counterpart so as to not race with the upcomming __delete__ message.
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// In the child side, the __delete__ messages are not sent right after Stop,
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// they are scheduled in the ImageBridgeChild's message queue in order to ensure
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// that all the messages from the parent side have been received and processed
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// before sending __delete__.
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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, uint32_t aTextureFlags);
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};
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} // namespace
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} // namespace
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