cc/resources/image_copy_raster_worker_pool.h

   1 // Copyright 2014 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 CC_RESOURCES_IMAGE_COPY_RASTER_WORKER_POOL_H_
   6 #define CC_RESOURCES_IMAGE_COPY_RASTER_WORKER_POOL_H_
   7
   8 #include <vector>
   9
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/values.h"
  12 #include "cc/resources/raster_worker_pool.h"
  13 #include "cc/resources/rasterizer.h"
  14
  15 namespace cc {
  16 class ResourcePool;
  17 class ResourceProvider;
  18 class ScopedResource;
  19
  20 class CC_EXPORT ImageCopyRasterWorkerPool : public RasterWorkerPool,
  21                                             public Rasterizer,
  22                                             public RasterizerTaskClient {
  23  public:
  24   virtual ~ImageCopyRasterWorkerPool();
  25
  26   static scoped_ptr<RasterWorkerPool> Create(
  27       base::SequencedTaskRunner* task_runner,
  28       TaskGraphRunner* task_graph_runner,
  29       ResourceProvider* resource_provider,
  30       ResourcePool* resource_pool);
  31
  32   // Overridden from RasterWorkerPool:
  33   virtual Rasterizer* AsRasterizer() OVERRIDE;
  34
  35   // Overridden from Rasterizer:
  36   virtual void SetClient(RasterizerClient* client) OVERRIDE;
  37   virtual void Shutdown() OVERRIDE;
  38   virtual void ScheduleTasks(RasterTaskQueue* queue) OVERRIDE;
  39   virtual void CheckForCompletedTasks() OVERRIDE;
  40
  41   // Overridden from RasterizerTaskClient:
  42   virtual SkCanvas* AcquireCanvasForRaster(RasterTask* task) OVERRIDE;
  43   virtual void ReleaseCanvasForRaster(RasterTask* task) OVERRIDE;
  44
  45  protected:
  46   ImageCopyRasterWorkerPool(base::SequencedTaskRunner* task_runner,
  47                             TaskGraphRunner* task_graph_runner,
  48                             ResourceProvider* resource_provider,
  49                             ResourcePool* resource_pool);
  50
  51  private:
  52   struct RasterTaskState {
  53     class TaskComparator {
  54      public:
  55       explicit TaskComparator(const RasterTask* task) : task_(task) {}
  56
  57       bool operator()(const RasterTaskState& state) const {
  58         return state.task == task_;
  59       }
  60
  61      private:
  62       const RasterTask* task_;
  63     };
  64
  65     typedef std::vector<RasterTaskState> Vector;
  66
  67     RasterTaskState(const RasterTask* task, ScopedResource* resource)
  68         : task(task), resource(resource) {}
  69
  70     const RasterTask* task;
  71     ScopedResource* resource;
  72   };
  73
  74   void OnRasterFinished();
  75   void OnRasterRequiredForActivationFinished();
  76   void FlushCopies();
  77   scoped_ptr<base::Value> StateAsValue() const;
  78   scoped_ptr<base::Value> StagingStateAsValue() const;
  79
  80   scoped_refptr<base::SequencedTaskRunner> task_runner_;
  81   TaskGraphRunner* task_graph_runner_;
  82   const NamespaceToken namespace_token_;
  83   RasterizerClient* client_;
  84   ResourceProvider* resource_provider_;
  85   ResourcePool* resource_pool_;
  86
  87   RasterTaskState::Vector raster_task_states_;
  88
  89   bool has_performed_copy_since_last_flush_;
  90
  91   bool raster_tasks_pending_;
  92   bool raster_tasks_required_for_activation_pending_;
  93
  94   base::WeakPtrFactory<ImageCopyRasterWorkerPool>
  95       raster_finished_weak_ptr_factory_;
  96
  97   scoped_refptr<RasterizerTask> raster_finished_task_;
  98   scoped_refptr<RasterizerTask> raster_required_for_activation_finished_task_;
  99
 100   // Task graph used when scheduling tasks and vector used to gather
 101   // completed tasks.
 102   TaskGraph graph_;
 103   Task::Vector completed_tasks_;
 104
 105   DISALLOW_COPY_AND_ASSIGN(ImageCopyRasterWorkerPool);
 106 };
 107
 108 }  // namespace cc
 109
 110 #endif  // CC_RESOURCES_IMAGE_COPY_RASTER_WORKER_POOL_H_