| // Copyright 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_TILE_MANAGER_H_ |
| #define CC_TILE_MANAGER_H_ |
| |
| #include <list> |
| #include <queue> |
| #include <vector> |
| |
| #include "base/hash_tables.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/values.h" |
| #include "cc/resource_pool.h" |
| #include "cc/tile_priority.h" |
| |
| namespace cc { |
| |
| class RasterThread; |
| class ResourceProvider; |
| class Tile; |
| class TileVersion; |
| struct RenderingStats; |
| |
| class CC_EXPORT TileManagerClient { |
| public: |
| virtual void ScheduleManageTiles() = 0; |
| virtual void ScheduleCheckForCompletedSetPixels() = 0; |
| |
| protected: |
| virtual ~TileManagerClient() {} |
| }; |
| |
| // Tile manager classifying tiles into a few basic |
| // bins: |
| enum TileManagerBin { |
| NOW_BIN = 0, // Needed ASAP. |
| SOON_BIN = 1, // Impl-side version of prepainting. |
| EVENTUALLY_BIN = 2, // Nice to have, if we've got memory and time. |
| NEVER_BIN = 3, // Dont bother. |
| NUM_BINS = 4 |
| }; |
| |
| // This is state that is specific to a tile that is |
| // managed by the TileManager. |
| class CC_EXPORT ManagedTileState { |
| public: |
| ManagedTileState(); |
| ~ManagedTileState(); |
| |
| // Persisted state: valid all the time. |
| bool can_use_gpu_memory; |
| bool can_be_freed; |
| scoped_ptr<ResourcePool::Resource> resource; |
| bool resource_is_being_initialized; |
| bool contents_swizzled; |
| bool need_to_gather_pixel_refs; |
| std::list<skia::LazyPixelRef*> pending_pixel_refs; |
| |
| // Ephemeral state, valid only during Manage. |
| TileManagerBin bin[NUM_TREES]; |
| // Bin used to determine raster priority. |
| TileManagerBin raster_bin; |
| TileResolution resolution; |
| float time_to_needed_in_seconds; |
| }; |
| |
| // This class manages tiles, deciding which should get rasterized and which |
| // should no longer have any memory assigned to them. Tile objects are "owned" |
| // by layers; they automatically register with the manager when they are |
| // created, and unregister from the manager when they are deleted. |
| class CC_EXPORT TileManager { |
| public: |
| TileManager(TileManagerClient* client, |
| ResourceProvider *resource_provider, |
| size_t num_raster_threads); |
| virtual ~TileManager(); |
| |
| const GlobalStateThatImpactsTilePriority& GlobalState() const { return global_state_; } |
| void SetGlobalState(const GlobalStateThatImpactsTilePriority& state); |
| |
| void ManageTiles(); |
| void CheckForCompletedSetPixels(); |
| |
| void GetRenderingStats(RenderingStats* stats); |
| |
| int GetTilesInBinCount(TileManagerBin bin, WhichTree tree); |
| int GetDrawableTilesInBinCount(TileManagerBin bin, WhichTree tree); |
| |
| protected: |
| // Methods called by Tile |
| friend class Tile; |
| void RegisterTile(Tile*); |
| void UnregisterTile(Tile*); |
| void WillModifyTilePriority(Tile*, WhichTree, const TilePriority& new_priority); |
| |
| private: |
| void ResetBinCounts(); |
| void AssignGpuMemoryToTiles(); |
| void FreeResourcesForTile(Tile*); |
| void ScheduleManageTiles(); |
| void ScheduleCheckForCompletedSetPixels(); |
| void DispatchMoreTasks(); |
| void DispatchOneRasterTask(RasterThread*, scoped_refptr<Tile>); |
| void OnRasterTaskCompleted( |
| scoped_refptr<Tile>, |
| scoped_ptr<ResourcePool::Resource>, |
| scoped_refptr<PicturePileImpl>, |
| int manage_tiles_call_count_when_dispatched, |
| RenderingStats*); |
| void DidFinishTileInitialization(Tile*); |
| void DispatchImageDecodingTasksForTile(Tile*); |
| void OnImageDecodingTaskCompleted(scoped_refptr<Tile>, |
| uint32_t, |
| RenderingStats*); |
| void DispatchOneImageDecodingTask( |
| RasterThread*, scoped_refptr<Tile>, skia::LazyPixelRef*); |
| void GatherPixelRefsForTile(Tile*); |
| RasterThread* GetFreeRasterThread(); |
| |
| TileManagerClient* client_; |
| scoped_ptr<ResourcePool> resource_pool_; |
| bool manage_tiles_pending_; |
| int manage_tiles_call_count_; |
| bool check_for_completed_set_pixels_pending_; |
| |
| GlobalStateThatImpactsTilePriority global_state_; |
| |
| int tiles_in_bin_count_[NUM_BINS][NUM_TREES]; |
| int drawable_tiles_in_bin_count_[NUM_BINS][NUM_TREES]; |
| |
| typedef std::vector<Tile*> TileVector; |
| TileVector tiles_; |
| TileVector tiles_that_need_to_be_rasterized_; |
| |
| typedef std::list<Tile*> TileList; |
| // Tiles with image decoding tasks. These tiles need to be rasterized |
| // when all the image decoding tasks finish. |
| TileList tiles_with_image_decoding_tasks_; |
| |
| typedef base::hash_map<uint32_t, skia::LazyPixelRef*> PixelRefMap; |
| PixelRefMap pending_decode_tasks_; |
| |
| typedef std::queue<scoped_refptr<Tile> > TileQueue; |
| TileQueue tiles_with_pending_set_pixels_; |
| |
| typedef ScopedPtrVector<RasterThread> RasterThreadVector; |
| RasterThreadVector raster_threads_; |
| |
| RenderingStats rendering_stats_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TileManager); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_TILE_MANAGER_H_ |