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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/base/ref_counted_managed.h"
#include "cc/debug/rendering_stats_instrumentation.h"
#include "cc/resources/managed_tile_state.h"
#include "cc/resources/memory_history.h"
#include "cc/resources/picture_pile_impl.h"
#include "cc/resources/prioritized_tile_set.h"
#include "cc/resources/raster_worker_pool.h"
#include "cc/resources/resource_pool.h"
#include "cc/resources/tile.h"
namespace cc {
class ResourceProvider;
class CC_EXPORT TileManagerClient {
public:
virtual void NotifyReadyToActivate() = 0;
protected:
virtual ~TileManagerClient() {}
};
struct RasterTaskCompletionStats {
RasterTaskCompletionStats();
size_t completed_count;
size_t canceled_count;
};
scoped_ptr<base::Value> RasterTaskCompletionStatsAsValue(
const RasterTaskCompletionStats& stats);
// 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 RefCountedManager<Tile> {
public:
static scoped_ptr<TileManager> Create(
TileManagerClient* client,
ResourceProvider* resource_provider,
size_t num_raster_threads,
RenderingStatsInstrumentation* rendering_stats_instrumentation,
bool use_map_image,
size_t max_transfer_buffer_usage_bytes,
size_t max_raster_usage_bytes,
GLenum map_image_texture_target);
virtual ~TileManager();
void ManageTiles(const GlobalStateThatImpactsTilePriority& state);
// Returns true when visible tiles have been initialized.
bool UpdateVisibleTiles();
scoped_refptr<Tile> CreateTile(PicturePileImpl* picture_pile,
gfx::Size tile_size,
gfx::Rect content_rect,
gfx::Rect opaque_rect,
float contents_scale,
int layer_id,
int source_frame_number,
int flags);
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_allocated_bytes,
size_t* memory_used_bytes) const;
const MemoryHistory::Entry& memory_stats_from_last_assign() const {
return memory_stats_from_last_assign_;
}
void InitializeTilesWithResourcesForTesting(
const std::vector<Tile*>& tiles,
ResourceProvider* resource_provider) {
for (size_t i = 0; i < tiles.size(); ++i) {
ManagedTileState& mts = tiles[i]->managed_state();
ManagedTileState::TileVersion& tile_version =
mts.tile_versions[HIGH_QUALITY_NO_LCD_RASTER_MODE];
tile_version.resource_ = resource_pool_->AcquireResource(
gfx::Size(1, 1));
bytes_releasable_ += BytesConsumedIfAllocated(tiles[i]);
++resources_releasable_;
}
}
RasterWorkerPool* RasterWorkerPoolForTesting() {
return raster_worker_pool_.get();
}
void SetGlobalStateForTesting(
const GlobalStateThatImpactsTilePriority& state) {
if (state != global_state_) {
global_state_ = state;
prioritized_tiles_dirty_ = true;
resource_pool_->SetResourceUsageLimits(
global_state_.memory_limit_in_bytes,
global_state_.unused_memory_limit_in_bytes,
global_state_.num_resources_limit);
}
}
protected:
TileManager(TileManagerClient* client,
ResourceProvider* resource_provider,
scoped_ptr<RasterWorkerPool> raster_worker_pool,
size_t num_raster_threads,
size_t max_raster_usage_bytes,
RenderingStatsInstrumentation* rendering_stats_instrumentation);
// Methods called by Tile
friend class Tile;
void DidChangeTilePriority(Tile* tile);
void CleanUpReleasedTiles();
// Overriden from RefCountedManager<Tile>:
virtual void Release(Tile* tile) OVERRIDE;
// Overriden from RasterWorkerPoolClient:
virtual bool ShouldForceTasksRequiredForActivationToComplete() const
OVERRIDE;
virtual void DidFinishRunningTasks() OVERRIDE;
virtual void DidFinishRunningTasksRequiredForActivation() OVERRIDE;
typedef std::vector<Tile*> TileVector;
typedef std::set<Tile*> TileSet;
// Virtual for test
virtual void ScheduleTasks(
const TileVector& tiles_that_need_to_be_rasterized);
void AssignGpuMemoryToTiles(
PrioritizedTileSet* tiles,
TileVector* tiles_that_need_to_be_rasterized);
void GetTilesWithAssignedBins(PrioritizedTileSet* tiles);
private:
void OnImageDecodeTaskCompleted(
int layer_id,
skia::LazyPixelRef* pixel_ref,
bool was_canceled);
void OnRasterTaskCompleted(Tile::Id tile,
scoped_ptr<ScopedResource> resource,
RasterMode raster_mode,
const PicturePileImpl::Analysis& analysis,
bool was_canceled);
inline size_t BytesConsumedIfAllocated(const Tile* tile) const {
return Resource::MemorySizeBytes(tile->size(),
raster_worker_pool_->GetResourceFormat());
}
RasterMode DetermineRasterMode(const Tile* tile) const;
void FreeResourceForTile(Tile* tile, RasterMode mode);
void FreeResourcesForTile(Tile* tile);
void FreeUnusedResourcesForTile(Tile* tile);
RasterWorkerPool::Task CreateImageDecodeTask(
Tile* tile, skia::LazyPixelRef* pixel_ref);
RasterWorkerPool::RasterTask CreateRasterTask(Tile* tile);
scoped_ptr<base::Value> GetMemoryRequirementsAsValue() const;
void UpdatePrioritizedTileSetIfNeeded();
TileManagerClient* client_;
scoped_ptr<ResourcePool> resource_pool_;
scoped_ptr<RasterWorkerPool> raster_worker_pool_;
GlobalStateThatImpactsTilePriority global_state_;
typedef base::hash_map<Tile::Id, Tile*> TileMap;
TileMap tiles_;
PrioritizedTileSet prioritized_tiles_;
bool prioritized_tiles_dirty_;
bool all_tiles_that_need_to_be_rasterized_have_memory_;
bool all_tiles_required_for_activation_have_memory_;
size_t memory_required_bytes_;
size_t memory_nice_to_have_bytes_;
size_t bytes_releasable_;
size_t resources_releasable_;
size_t max_raster_usage_bytes_;
bool ever_exceeded_memory_budget_;
MemoryHistory::Entry memory_stats_from_last_assign_;
RenderingStatsInstrumentation* rendering_stats_instrumentation_;
bool did_initialize_visible_tile_;
bool did_check_for_completed_tasks_since_last_schedule_tasks_;
typedef base::hash_map<uint32_t, RasterWorkerPool::Task> PixelRefTaskMap;
typedef base::hash_map<int, PixelRefTaskMap> LayerPixelRefTaskMap;
LayerPixelRefTaskMap image_decode_tasks_;
typedef base::hash_map<int, int> LayerCountMap;
LayerCountMap used_layer_counts_;
RasterTaskCompletionStats update_visible_tiles_stats_;
std::vector<Tile*> released_tiles_;
DISALLOW_COPY_AND_ASSIGN(TileManager);
};
} // namespace cc
#endif // CC_RESOURCES_TILE_MANAGER_H_
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