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