content/browser/renderer_host/compositor_impl_android.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/cancelable_callback.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "cc/trees/layer_tree_host_client.h"
  14 #include "cc/trees/layer_tree_host_single_thread_client.h"
  15 #include "content/browser/android/ui_resource_provider_impl.h"
  16 #include "content/browser/renderer_host/image_transport_factory_android.h"
  17 #include "content/common/content_export.h"
  18 #include "content/common/gpu/client/context_provider_command_buffer.h"
  19 #include "content/public/browser/android/compositor.h"
  20 #include "gpu/command_buffer/common/capabilities.h"
  21 #include "third_party/khronos/GLES2/gl2.h"
  22 #include "ui/base/android/system_ui_resource_manager.h"
  23 #include "ui/base/android/window_android_compositor.h"
  24
  25 class SkBitmap;
  26 struct ANativeWindow;
  27
  28 namespace cc {
  29 class Layer;
  30 class LayerTreeHost;
  31 }
  32
  33 namespace content {
  34 class CompositorClient;
  35 class UIResourceProvider;
  36
  37 // -----------------------------------------------------------------------------
  38 // Browser-side compositor that manages a tree of content and UI layers.
  39 // -----------------------------------------------------------------------------
  40 class CONTENT_EXPORT CompositorImpl
  41     : public Compositor,
  42       public cc::LayerTreeHostClient,
  43       public cc::LayerTreeHostSingleThreadClient,
  44       public ImageTransportFactoryAndroidObserver,
  45       public ui::WindowAndroidCompositor {
  46  public:
  47   CompositorImpl(CompositorClient* client, gfx::NativeWindow root_window);
  48   virtual ~CompositorImpl();
  49
  50   static bool IsInitialized();
  51
  52   // Creates a surface texture and returns a surface texture id. Returns -1 on
  53   // failure.
  54   static int CreateSurfaceTexture(int child_process_id);
  55
  56   // Destroy all surface textures associated with |child_process_id|.
  57   static void DestroyAllSurfaceTextures(int child_process_id);
  58
  59   void PopulateGpuCapabilities(gpu::Capabilities gpu_capabilities);
  60
  61  private:
  62   // Compositor implementation.
  63   virtual void SetRootLayer(scoped_refptr<cc::Layer> root) OVERRIDE;
  64   virtual void SetWindowSurface(ANativeWindow* window) OVERRIDE;
  65   virtual void SetSurface(jobject surface) OVERRIDE;
  66   virtual void SetVisible(bool visible) OVERRIDE;
  67   virtual void setDeviceScaleFactor(float factor) OVERRIDE;
  68   virtual void SetWindowBounds(const gfx::Size& size) OVERRIDE;
  69   virtual void SetHasTransparentBackground(bool flag) OVERRIDE;
  70   virtual void SetNeedsComposite() OVERRIDE;
  71   virtual UIResourceProvider& GetUIResourceProvider() OVERRIDE;
  72
  73   // LayerTreeHostClient implementation.
  74   virtual void WillBeginMainFrame(int frame_id) OVERRIDE {}
  75   virtual void DidBeginMainFrame() OVERRIDE {}
  76   virtual void BeginMainFrame(const cc::BeginFrameArgs& args) OVERRIDE {}
  77   virtual void Layout() OVERRIDE;
  78   virtual void ApplyViewportDeltas(
  79       const gfx::Vector2d& scroll_delta,
  80       float page_scale,
  81       float top_controls_delta) OVERRIDE {}
  82   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(bool fallback)
  83       OVERRIDE;
  84   virtual void DidInitializeOutputSurface() OVERRIDE {}
  85   virtual void WillCommit() OVERRIDE {}
  86   virtual void DidCommit() OVERRIDE;
  87   virtual void DidCommitAndDrawFrame() OVERRIDE {}
  88   virtual void DidCompleteSwapBuffers() OVERRIDE;
  89
  90   // LayerTreeHostSingleThreadClient implementation.
  91   virtual void ScheduleComposite() OVERRIDE;
  92   virtual void ScheduleAnimation() OVERRIDE;
  93   virtual void DidPostSwapBuffers() OVERRIDE;
  94   virtual void DidAbortSwapBuffers() OVERRIDE;
  95
  96   // ImageTransportFactoryAndroidObserver implementation.
  97   virtual void OnLostResources() OVERRIDE;
  98
  99   // WindowAndroidCompositor implementation.
 100   virtual void AttachLayerForReadback(scoped_refptr<cc::Layer> layer) OVERRIDE;
 101   virtual void RequestCopyOfOutputOnRootLayer(
 102       scoped_ptr<cc::CopyOutputRequest> request) OVERRIDE;
 103   virtual void OnVSync(base::TimeTicks frame_time,
 104                        base::TimeDelta vsync_period) OVERRIDE;
 105   virtual void SetNeedsAnimate() OVERRIDE;
 106   virtual ui::SystemUIResourceManager& GetSystemUIResourceManager() OVERRIDE;
 107
 108   enum CompositingTrigger {
 109     DO_NOT_COMPOSITE,
 110     COMPOSITE_IMMEDIATELY,
 111     COMPOSITE_EVENTUALLY,
 112   };
 113   void PostComposite(CompositingTrigger trigger);
 114   void Composite(CompositingTrigger trigger);
 115
 116   bool WillCompositeThisFrame() const {
 117     return current_composite_task_ &&
 118            !current_composite_task_->callback().is_null();
 119   }
 120   bool DidCompositeThisFrame() const {
 121     return current_composite_task_ &&
 122            current_composite_task_->callback().is_null();
 123   }
 124   bool WillComposite() const {
 125     return WillCompositeThisFrame() ||
 126            composite_on_vsync_trigger_ != DO_NOT_COMPOSITE;
 127   }
 128   void CancelComposite() {
 129     DCHECK(WillComposite());
 130     if (WillCompositeThisFrame())
 131       current_composite_task_->Cancel();
 132     current_composite_task_.reset();
 133     composite_on_vsync_trigger_ = DO_NOT_COMPOSITE;
 134     will_composite_immediately_ = false;
 135   }
 136   void OnGpuChannelEstablished();
 137
 138   // root_layer_ is the persistent internal root layer, while subroot_layer_
 139   // is the one attached by the compositor client.
 140   scoped_refptr<cc::Layer> root_layer_;
 141   scoped_refptr<cc::Layer> subroot_layer_;
 142
 143   scoped_ptr<cc::LayerTreeHost> host_;
 144   content::UIResourceProviderImpl ui_resource_provider_;
 145
 146   gfx::Size size_;
 147   bool has_transparent_background_;
 148   float device_scale_factor_;
 149
 150   ANativeWindow* window_;
 151   int surface_id_;
 152
 153   CompositorClient* client_;
 154
 155   gfx::NativeWindow root_window_;
 156
 157   // Used locally to track whether a call to LTH::Composite() did result in
 158   // a posted SwapBuffers().
 159   bool did_post_swapbuffers_;
 160
 161   // Used locally to inhibit ScheduleComposite() during Layout().
 162   bool ignore_schedule_composite_;
 163
 164   // Whether we need to composite in general because of any invalidation or
 165   // explicit request.
 166   bool needs_composite_;
 167
 168   // Whether we need to update animations on the next composite.
 169   bool needs_animate_;
 170
 171   // Whether we posted a task and are about to composite.
 172   bool will_composite_immediately_;
 173
 174   // How we should schedule Composite during the next vsync.
 175   CompositingTrigger composite_on_vsync_trigger_;
 176
 177   // The Composite operation scheduled for the current vsync interval.
 178   scoped_ptr<base::CancelableClosure> current_composite_task_;
 179
 180   // The number of SwapBuffer calls that have not returned and ACK'd from
 181   // the GPU thread.
 182   unsigned int pending_swapbuffers_;
 183
 184   base::TimeDelta vsync_period_;
 185   base::TimeTicks last_vsync_;
 186
 187   base::WeakPtrFactory<CompositorImpl> weak_factory_;
 188
 189   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 190 };
 191
 192 } // namespace content
 193
 194 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_