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// Copyright 2015 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_TILES_IMAGE_DECODE_CONTROLLER_H_
#define CC_TILES_IMAGE_DECODE_CONTROLLER_H_
#include "base/containers/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "cc/base/cc_export.h"
#include "cc/playback/discardable_image_map.h"
#include "cc/raster/tile_task_runner.h"
#include "skia/ext/refptr.h"
namespace cc {
class ImageDecodeController {
public:
ImageDecodeController();
~ImageDecodeController();
scoped_refptr<ImageDecodeTask> GetTaskForImage(const DrawImage& image,
int layer_id,
uint64_t prepare_tiles_id);
// Note that this function has to remain thread safe.
void DecodeImage(const SkImage* image);
// TODO(vmpstr): This should go away once the controller is decoding images
// based on priority and memory.
void AddLayerUsedCount(int layer_id);
void SubtractLayerUsedCount(int layer_id);
void OnImageDecodeTaskCompleted(int layer_id,
const SkImage* image,
bool was_canceled);
private:
scoped_refptr<ImageDecodeTask> CreateTaskForImage(const SkImage* image,
int layer_id,
uint64_t prepare_tiles_id);
using ImageTaskMap = base::hash_map<uint32_t, scoped_refptr<ImageDecodeTask>>;
using LayerImageTaskMap = base::hash_map<int, ImageTaskMap>;
LayerImageTaskMap image_decode_tasks_;
using LayerCountMap = base::hash_map<int, int>;
LayerCountMap used_layer_counts_;
};
} // namespace cc
#endif // CC_TILES_IMAGE_DECODE_CONTROLLER_H_
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