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// 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_RESOURCES_TILE_MANAGER_H_
#define CC_RESOURCES_TILE_MANAGER_H_
#include <queue>
#include <set>
#include <vector>
#include "base/containers/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "cc/debug/rendering_stats_instrumentation.h"
#include "cc/resources/memory_history.h"
#include "cc/resources/picture_pile_impl.h"
#include "cc/resources/raster_worker_pool.h"
#include "cc/resources/resource_pool.h"
#include "cc/resources/tile_priority.h"
namespace cc {
class ResourceProvider;
class Tile;
class TileVersion;
class CC_EXPORT TileManagerClient {
public:
virtual void DidInitializeVisibleTile() = 0;
virtual bool
ShouldForceTileUploadsRequiredForActivationToComplete() const = 0;
virtual void NotifyReadyToActivate() = 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
// Be sure to update TileManagerBinAsValue when adding new fields.
};
scoped_ptr<base::Value> TileManagerBinAsValue(
TileManagerBin bin);
enum TileManagerBinPriority {
HIGH_PRIORITY_BIN = 0,
LOW_PRIORITY_BIN = 1,
NUM_BIN_PRIORITIES = 2
};
scoped_ptr<base::Value> TileManagerBinPriorityAsValue(
TileManagerBinPriority bin);
// 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 RasterWorkerPoolClient {
public:
static scoped_ptr<TileManager> Create(
TileManagerClient* client,
ResourceProvider* resource_provider,
size_t num_raster_threads,
bool use_color_estimator,
RenderingStatsInstrumentation* rendering_stats_instrumentation,
bool use_map_image);
virtual ~TileManager();
const GlobalStateThatImpactsTilePriority& GlobalState() const {
return global_state_;
}
void SetGlobalState(const GlobalStateThatImpactsTilePriority& state);
void ManageTiles();
void CheckForCompletedTileUploads();
scoped_ptr<base::Value> BasicStateAsValue() const;
scoped_ptr<base::Value> AllTilesAsValue() const;
void GetMemoryStats(size_t* memory_required_bytes,
size_t* memory_nice_to_have_bytes,
size_t* memory_used_bytes) const;
const MemoryHistory::Entry& memory_stats_from_last_assign() const {
return memory_stats_from_last_assign_;
}
bool AreTilesRequiredForActivationReady() const {
return tiles_that_need_to_be_initialized_for_activation_.empty();
}
protected:
TileManager(TileManagerClient* client,
ResourceProvider* resource_provider,
scoped_ptr<RasterWorkerPool> raster_worker_pool,
size_t num_raster_threads,
bool use_color_estimator,
RenderingStatsInstrumentation* rendering_stats_instrumentation,
GLenum texture_format);
// Methods called by Tile
friend class Tile;
void RegisterTile(Tile* tile);
void UnregisterTile(Tile* tile);
// Overriden from RasterWorkerPoolClient:
virtual bool ShouldForceTasksRequiredForActivationToComplete() const
OVERRIDE;
// Virtual for test
virtual void ScheduleTasks();
private:
void OnImageDecodeTaskCompleted(
int layer_id,
skia::LazyPixelRef* pixel_ref,
bool was_canceled);
void OnRasterTaskCompleted(
scoped_refptr<Tile> tile,
scoped_ptr<ResourcePool::Resource> resource,
RasterMode raster_mode,
const PicturePileImpl::Analysis& analysis,
bool was_canceled);
void AssignBinsToTiles();
void SortTiles();
RasterMode DetermineRasterMode(const Tile* tile) const;
void CleanUpUnusedImageDecodeTasks();
void AssignGpuMemoryToTiles();
void FreeResourceForTile(Tile* tile, RasterMode mode);
void FreeResourcesForTile(Tile* tile);
void FreeUnusedResourcesForTile(Tile* tile);
RasterWorkerPool::Task CreateImageDecodeTask(
Tile* tile, skia::LazyPixelRef* pixel_ref);
RasterTaskMetadata GetRasterTaskMetadata(const Tile& tile) const;
RasterWorkerPool::RasterTask CreateRasterTask(Tile* tile);
void DidFinishTileInitialization(Tile* tile);
void DidTileTreeBinChange(Tile* tile,
TileManagerBin new_tree_bin,
WhichTree tree);
scoped_ptr<base::Value> GetMemoryRequirementsAsValue() const;
void AddRequiredTileForActivation(Tile* tile);
TileManagerClient* client_;
scoped_ptr<ResourcePool> resource_pool_;
scoped_ptr<RasterWorkerPool> raster_worker_pool_;
GlobalStateThatImpactsTilePriority global_state_;
typedef std::vector<Tile*> TileVector;
TileVector tiles_;
TileVector tiles_that_need_to_be_rasterized_;
typedef std::set<Tile*> TileSet;
TileSet tiles_that_need_to_be_initialized_for_activation_;
bool ever_exceeded_memory_budget_;
MemoryHistory::Entry memory_stats_from_last_assign_;
RenderingStatsInstrumentation* rendering_stats_instrumentation_;
bool use_color_estimator_;
bool did_initialize_visible_tile_;
GLenum texture_format_;
typedef base::hash_map<uint32_t, RasterWorkerPool::Task> PixelRefTaskMap;
typedef base::hash_map<int, PixelRefTaskMap> LayerPixelRefTaskMap;
LayerPixelRefTaskMap image_decode_tasks_;
DISALLOW_COPY_AND_ASSIGN(TileManager);
};
} // namespace cc
#endif // CC_RESOURCES_TILE_MANAGER_H_
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