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::trace_event::ConvertableToTraceFormat> StateAsValue()
  37         const;
  38
  39     const TilingSetRasterQueueAll* active_queue() const {
  40       return active_queue_.get();
  41     }
  42     const TilingSetRasterQueueAll* pending_queue() const {
  43       return pending_queue_.get();
  44     }
  45
  46    private:
  47     scoped_ptr<TilingSetRasterQueueAll> active_queue_;
  48     scoped_ptr<TilingSetRasterQueueAll> pending_queue_;
  49     bool has_both_layers_;
  50
  51     // Set of returned tiles (excluding the current one) for DCHECKing.
  52     std::set<const Tile*> returned_tiles_for_debug_;
  53   };
  54
  55   RasterTilePriorityQueueAll();
  56   ~RasterTilePriorityQueueAll() override;
  57
  58   bool IsEmpty() const override;
  59   Tile* Top() override;
  60   void Pop() override;
  61
  62  private:
  63   friend class RasterTilePriorityQueue;
  64
  65   void Build(const std::vector<PictureLayerImpl::Pair>& paired_layers,
  66              TreePriority tree_priority);
  67
  68   // TODO(vmpstr): This is potentially unnecessary if it becomes the case that
  69   // PairedTilingSetQueue is fast enough to copy. In that case, we can use
  70   // objects directly (ie std::vector<PairedTilingSetQueue>.
  71   ScopedPtrVector<PairedTilingSetQueue> paired_queues_;
  72   TreePriority tree_priority_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(RasterTilePriorityQueueAll);
  75 };
  76
  77 }  // namespace cc
  78
  79 #endif  // CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_ALL_H_