cc/resources/image_raster_worker_pool.h

   1 // Copyright 2013 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_RASTER_WORKER_POOL_H_
   6 #define CC_RESOURCES_IMAGE_RASTER_WORKER_POOL_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "base/values.h"
  10 #include "cc/resources/raster_worker_pool.h"
  11 #include "cc/resources/rasterizer.h"
  12
  13 namespace cc {
  14 class ResourceProvider;
  15
  16 class CC_EXPORT ImageRasterWorkerPool : public RasterWorkerPool,
  17                                         public Rasterizer,
  18                                         public RasterizerTaskClient {
  19  public:
  20   virtual ~ImageRasterWorkerPool();
  21
  22   static scoped_ptr<RasterWorkerPool> Create(
  23       base::SequencedTaskRunner* task_runner,
  24       TaskGraphRunner* task_graph_runner,
  25       ResourceProvider* resource_provider);
  26
  27   // Overridden from RasterWorkerPool:
  28   virtual Rasterizer* AsRasterizer() OVERRIDE;
  29
  30   // Overridden from Rasterizer:
  31   virtual void SetClient(RasterizerClient* client) OVERRIDE;
  32   virtual void Shutdown() OVERRIDE;
  33   virtual void ScheduleTasks(RasterTaskQueue* queue) OVERRIDE;
  34   virtual void CheckForCompletedTasks() OVERRIDE;
  35
  36   // Overridden from RasterizerTaskClient:
  37   virtual SkCanvas* AcquireCanvasForRaster(RasterTask* task) OVERRIDE;
  38   virtual void ReleaseCanvasForRaster(RasterTask* task) OVERRIDE;
  39
  40  protected:
  41   ImageRasterWorkerPool(base::SequencedTaskRunner* task_runner,
  42                         TaskGraphRunner* task_graph_runner,
  43                         ResourceProvider* resource_provider);
  44
  45  private:
  46   void OnRasterFinished();
  47   void OnRasterRequiredForActivationFinished();
  48   scoped_ptr<base::Value> StateAsValue() const;
  49
  50   scoped_refptr<base::SequencedTaskRunner> task_runner_;
  51   TaskGraphRunner* task_graph_runner_;
  52   const NamespaceToken namespace_token_;
  53   RasterizerClient* client_;
  54   ResourceProvider* resource_provider_;
  55
  56   bool raster_tasks_pending_;
  57   bool raster_tasks_required_for_activation_pending_;
  58
  59   base::WeakPtrFactory<ImageRasterWorkerPool> raster_finished_weak_ptr_factory_;
  60
  61   scoped_refptr<RasterizerTask> raster_finished_task_;
  62   scoped_refptr<RasterizerTask> raster_required_for_activation_finished_task_;
  63
  64   // Task graph used when scheduling tasks and vector used to gather
  65   // completed tasks.
  66   TaskGraph graph_;
  67   Task::Vector completed_tasks_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(ImageRasterWorkerPool);
  70 };
  71
  72 }  // namespace cc
  73
  74 #endif  // CC_RESOURCES_IMAGE_RASTER_WORKER_POOL_H_