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72 lines
2.4 KiB
Plaintext
72 lines
2.4 KiB
Plaintext
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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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 protocol PGrallocBuffer;
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include protocol PLayerTransaction;
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include "mozilla/layers/CompositorTypes.h";
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include "mozilla/GfxMessageUtils.h";
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using mozilla::null_t;
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using mozilla::layers::TextureFactoryIdentifier;
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using mozilla::layers::LayersBackend;
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namespace mozilla {
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namespace layers {
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/**
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* The PCompositor protocol is used to manage communication between
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* the main thread and the compositor thread context. It's primary
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* purpose is to manage the PLayerTransaction sub protocol.
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*/
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// This should really be 'sync', but we're using 'rpc' as a workaround
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// for Bug 716631.
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rpc protocol PCompositor
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{
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// A Compositor manages a single Layer Manager (PLayerTransaction)
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manages PLayerTransaction;
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parent:
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// The child is about to be destroyed, so perform any necessary cleanup.
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sync WillStop();
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// Clean up in preparation for own destruction.
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sync Stop();
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// Pause/resume the compositor. These are intended to be used on mobile, when
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// the compositor needs to pause/resume in lockstep with the application.
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sync Pause();
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sync Resume();
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async NotifyChildCreated(uint64_t id);
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// Make a snapshot of the content that would have been drawn to our
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// render target at the time this message is received. If the size
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// or format of |inSnapshot| doesn't match our render target,
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// results are undefined.
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//
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// NB: this message will result in animations, transforms, effects,
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// and so forth being interpolated. That's what we want to happen.
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sync MakeSnapshot(SurfaceDescriptor inSnapshot)
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returns (SurfaceDescriptor outSnapshot);
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// Make sure any pending composites are started immediately and
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// block until they are completed.
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sync FlushRendering();
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// layersBackendHints is an ordered list of preffered backends where
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// layersBackendHints[0] is the best backend. If any hints are LAYERS_NONE
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// that hint is ignored.
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sync PLayerTransaction(LayersBackend[] layersBackendHints, uint64_t id)
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returns (TextureFactoryIdentifier textureFactoryIdentifier, bool success);
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};
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} // layers
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} // mozilla
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