cc/resources/raster_tile_priority_queue_all.h

   1 // Copyright 2015 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_RASTER_TILE_PRIORITY_QUEUE_ALL_H_
   6 #define CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_ALL_H_
   7
   8 #include <set>
   9 #include <utility>
  10 #include <vector>
  11
  12 #include "cc/base/cc_export.h"
  13 #include "cc/layers/picture_layer_impl.h"
  14 #include "cc/resources/raster_tile_priority_queue.h"
  15 #include "cc/resources/tile_priority.h"
  16 #include "cc/resources/tiling_set_raster_queue_all.h"
  17
  18 namespace cc {
  19
  20 class CC_EXPORT RasterTilePriorityQueueAll : public RasterTilePriorityQueue {
  21  public:
  22   class PairedTilingSetQueue {
  23    public:
  24     PairedTilingSetQueue();
  25     PairedTilingSetQueue(const PictureLayerImpl::Pair& layer_pair,
  26                          TreePriority tree_priority);
  27     ~PairedTilingSetQueue();
  28
  29     bool IsEmpty() const;
  30     Tile* Top(TreePriority tree_priority);
  31     void Pop(TreePriority tree_priority);
  32
  33     WhichTree NextTileIteratorTree(TreePriority tree_priority) const;
  34     void SkipTilesReturnedByTwin(TreePriority tree_priority);
  35
  36     scoped_refptr<base::debug::ConvertableToTraceFormat> StateAsValue() const;
  37
  38     const TilingSetRasterQueueAll* active_queue() const {
  39       return active_queue_.get();
  40     }
  41     const TilingSetRasterQueueAll* pending_queue() const {
  42       return pending_queue_.get();
  43     }
  44
  45    private:
  46     scoped_ptr<TilingSetRasterQueueAll> active_queue_;
  47     scoped_ptr<TilingSetRasterQueueAll> pending_queue_;
  48     bool has_both_layers_;
  49
  50     // Set of returned tiles (excluding the current one) for DCHECKing.
  51     std::set<const Tile*> returned_tiles_for_debug_;
  52   };
  53
  54   RasterTilePriorityQueueAll();
  55   ~RasterTilePriorityQueueAll() override;
  56
  57   bool IsEmpty() const override;
  58   Tile* Top() override;
  59   void Pop() override;
  60
  61  private:
  62   friend class RasterTilePriorityQueue;
  63
  64   void Build(const std::vector<PictureLayerImpl::Pair>& paired_layers,
  65              TreePriority tree_priority);
  66
  67   // TODO(vmpstr): This is potentially unnecessary if it becomes the case that
  68   // PairedTilingSetQueue is fast enough to copy. In that case, we can use
  69   // objects directly (ie std::vector<PairedTilingSetQueue>.
  70   ScopedPtrVector<PairedTilingSetQueue> paired_queues_;
  71   TreePriority tree_priority_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(RasterTilePriorityQueueAll);
  74 };
  75
  76 }  // namespace cc
  77
  78 #endif  // CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_ALL_H_