mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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307 lines
9.4 KiB
C++
307 lines
9.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=4 ts=8 et tw=80 : */
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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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#ifndef mozilla_layers_CompositorParent_h
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#define mozilla_layers_CompositorParent_h
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// Enable this pref to turn on compositor performance warning.
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// This will print warnings if the compositor isn't meeting
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// its responsiveness objectives:
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// 1) Compose a frame within 15ms of receiving a ScheduleCompositeCall
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// 2) Unless a frame was composited within the throttle threshold in
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// which the deadline will be 15ms + throttle threshold
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//#define COMPOSITOR_PERFORMANCE_WARNING
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#include "mozilla/layers/PCompositorParent.h"
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#include "mozilla/layers/PLayerTransactionParent.h"
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#include "mozilla/layers/APZCTreeManager.h"
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#include "base/thread.h"
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#include "mozilla/Monitor.h"
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#include "mozilla/TimeStamp.h"
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#include "ShadowLayersManager.h"
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class nsIWidget;
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namespace base {
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class Thread;
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}
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namespace mozilla {
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namespace layers {
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class APZCTreeManager;
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class Layer;
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class LayerManagerComposite;
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class AsyncCompositionManager;
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struct TextureFactoryIdentifier;
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struct ScopedLayerTreeRegistration
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{
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ScopedLayerTreeRegistration(uint64_t aLayersId,
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Layer* aRoot,
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GeckoContentController* aController);
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~ScopedLayerTreeRegistration();
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private:
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uint64_t mLayersId;
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};
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class CompositorParent : public PCompositorParent,
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public ShadowLayersManager
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{
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorParent)
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public:
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CompositorParent(nsIWidget* aWidget,
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bool aUseExternalSurfaceSize = false,
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int aSurfaceWidth = -1, int aSurfaceHeight = -1);
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virtual ~CompositorParent();
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virtual bool RecvWillStop() MOZ_OVERRIDE;
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virtual bool RecvStop() MOZ_OVERRIDE;
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virtual bool RecvPause() MOZ_OVERRIDE;
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virtual bool RecvResume() MOZ_OVERRIDE;
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virtual bool RecvNotifyChildCreated(const uint64_t& child) MOZ_OVERRIDE;
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virtual bool RecvMakeSnapshot(const SurfaceDescriptor& aInSnapshot,
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SurfaceDescriptor* aOutSnapshot);
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virtual bool RecvFlushRendering() MOZ_OVERRIDE;
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virtual void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
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virtual void ShadowLayersUpdated(LayerTransactionParent* aLayerTree,
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const TargetConfig& aTargetConfig,
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bool isFirstPaint) MOZ_OVERRIDE;
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/**
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* This forces the is-first-paint flag to true. This is intended to
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* be called by the widget code when it loses its viewport information
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* (or for whatever reason wants to refresh the viewport information).
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* The information refresh happens because the compositor will call
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* SetFirstPaintViewport on the next frame of composition.
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*/
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void ForceIsFirstPaint();
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void Destroy();
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LayerManagerComposite* GetLayerManager() { return mLayerManager; }
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void NotifyChildCreated(uint64_t aChild);
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void AsyncRender();
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// Can be called from any thread
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void ScheduleRenderOnCompositorThread();
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void SchedulePauseOnCompositorThread();
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/**
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* Returns true if a surface was obtained and the resume succeeded; false
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* otherwise.
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*/
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bool ScheduleResumeOnCompositorThread(int width, int height);
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virtual void ScheduleComposition();
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void NotifyShadowTreeTransaction(uint64_t aId, bool aIsFirstPaint);
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/**
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* Returns the unique layer tree identifier that corresponds to the root
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* tree of this compositor.
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*/
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uint64_t RootLayerTreeId();
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/**
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* Returns a pointer to the compositor corresponding to the given ID.
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*/
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static CompositorParent* GetCompositor(uint64_t id);
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/**
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* Returns the compositor thread's message loop.
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*
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* This message loop is used by CompositorParent and ImageBridgeParent.
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*/
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static MessageLoop* CompositorLoop();
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/**
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* Creates the compositor thread and the global compositor map.
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*/
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static void StartUp();
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/**
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* Destroys the compositor thread and the global compositor map.
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*/
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static void ShutDown();
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/**
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* Allocate an ID that can be used to refer to a layer tree and
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* associated resources that live only on the compositor thread.
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*
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* Must run on the content main thread.
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*/
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static uint64_t AllocateLayerTreeId();
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/**
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* Release compositor-thread resources referred to by |aID|.
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*
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* Must run on the content main thread.
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*/
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static void DeallocateLayerTreeId(uint64_t aId);
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/**
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* Set aController as the pan/zoom callback for the subtree referred
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* to by aLayersId.
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*
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* Must run on content main thread.
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*/
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static void SetControllerForLayerTree(uint64_t aLayersId,
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GeckoContentController* aController);
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/**
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* This returns a reference to the APZCTreeManager to which
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* pan/zoom-related events can be sent.
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*/
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static APZCTreeManager* GetAPZCTreeManager(uint64_t aLayersId);
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/**
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* A new child process has been configured to push transactions
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* directly to us. Transport is to its thread context.
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*/
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static PCompositorParent*
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Create(Transport* aTransport, ProcessId aOtherProcess);
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/**
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* Setup external message loop and thread ID for Compositor.
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* Should be used when CompositorParent should work in existing thread/MessageLoop,
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* for example moving Compositor into native toolkit main thread will allow to avoid
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* extra synchronization and call ::Composite() right from toolkit::Paint event
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*/
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static void StartUpWithExistingThread(MessageLoop* aMsgLoop,
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PlatformThreadId aThreadID);
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struct LayerTreeState {
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LayerTreeState();
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nsRefPtr<Layer> mRoot;
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nsRefPtr<GeckoContentController> mController;
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CompositorParent* mParent;
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TargetConfig mTargetConfig;
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};
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/**
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* Lookup the indirect shadow tree for |aId| and return it if it
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* exists. Otherwise null is returned. This must only be called on
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* the compositor thread.
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*/
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static const LayerTreeState* GetIndirectShadowTree(uint64_t aId);
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/**
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* Tell all CompositorParents to update their last refresh to aTime and sample
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* animations at this time stamp. If aIsTesting is true, the
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* CompositorParents will become "paused" and continue sampling animations at
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* this time stamp until this function is called again with aIsTesting set to
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* false.
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*/
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static void SetTimeAndSampleAnimations(TimeStamp aTime, bool aIsTesting);
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/**
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* Returns true if the calling thrad is the compositor thread.
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*/
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static bool IsInCompositorThread();
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protected:
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virtual PLayerTransactionParent*
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AllocPLayerTransactionParent(const LayersBackend& aBackendHint,
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const uint64_t& aId,
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TextureFactoryIdentifier* aTextureFactoryIdentifier,
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bool* aSuccess);
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virtual bool DeallocPLayerTransactionParent(PLayerTransactionParent* aLayers);
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virtual void ScheduleTask(CancelableTask*, int);
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virtual void Composite();
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virtual void ComposeToTarget(gfxContext* aTarget);
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void SetEGLSurfaceSize(int width, int height);
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private:
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void PauseComposition();
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void ResumeComposition();
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void ResumeCompositionAndResize(int width, int height);
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void ForceComposition();
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inline static PlatformThreadId CompositorThreadID();
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/**
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* Creates a global map referencing each compositor by ID.
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*
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* This map is used by the ImageBridge protocol to trigger
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* compositions without having to keep references to the
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* compositor
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*/
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static void CreateCompositorMap();
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static void DestroyCompositorMap();
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/**
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* Creates the compositor thread.
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*
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* All compositors live on the same thread.
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* The thread is not lazily created on first access to avoid dealing with
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* thread safety. Therefore it's best to create and destroy the thread when
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* we know we areb't using it (So creating/destroying along with gfxPlatform
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* looks like a good place).
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*/
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static bool CreateThread();
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/**
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* Destroys the compositor thread.
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*
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* It is safe to call this fucntion more than once, although the second call
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* will have no effect.
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* This function is not thread-safe.
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*/
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static void DestroyThread();
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/**
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* Add a compositor to the global compositor map.
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*/
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static void AddCompositor(CompositorParent* compositor, uint64_t* id);
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/**
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* Remove a compositor from the global compositor map.
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*/
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static CompositorParent* RemoveCompositor(uint64_t id);
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/**
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* Return true if current state allows compositing, that is
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* finishing a layers transaction.
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*/
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bool CanComposite();
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nsRefPtr<LayerManagerComposite> mLayerManager;
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RefPtr<AsyncCompositionManager> mCompositionManager;
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nsIWidget* mWidget;
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CancelableTask *mCurrentCompositeTask;
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TimeStamp mLastCompose;
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TimeStamp mTestTime;
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bool mIsTesting;
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#ifdef COMPOSITOR_PERFORMANCE_WARNING
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TimeStamp mExpectedComposeTime;
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#endif
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bool mPaused;
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bool mUseExternalSurfaceSize;
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nsIntSize mEGLSurfaceSize;
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mozilla::Monitor mPauseCompositionMonitor;
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mozilla::Monitor mResumeCompositionMonitor;
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uint64_t mCompositorID;
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uint64_t mRootLayerTreeID;
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bool mOverrideComposeReadiness;
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CancelableTask* mForceCompositionTask;
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nsRefPtr<APZCTreeManager> mApzcTreeManager;
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DISALLOW_EVIL_CONSTRUCTORS(CompositorParent);
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};
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} // layers
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} // mozilla
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#endif // mozilla_layers_CompositorParent_h
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