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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CC_TILES_IMAGE_CONTROLLER_H_ | 5 #ifndef CC_TILES_IMAGE_CONTROLLER_H_ |
6 #define CC_TILES_IMAGE_CONTROLLER_H_ | 6 #define CC_TILES_IMAGE_CONTROLLER_H_ |
7 | 7 |
| 8 #include <set> |
8 #include <vector> | 9 #include <vector> |
9 | 10 |
10 #include "base/macros.h" | 11 #include "base/macros.h" |
11 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
| 13 #include "base/memory/weak_ptr.h" |
| 14 #include "base/threading/simple_thread.h" |
12 #include "cc/base/cc_export.h" | 15 #include "cc/base/cc_export.h" |
| 16 #include "cc/base/unique_notifier.h" |
13 #include "cc/playback/draw_image.h" | 17 #include "cc/playback/draw_image.h" |
14 #include "cc/raster/tile_task.h" | 18 #include "cc/raster/tile_task.h" |
15 #include "cc/tiles/image_decode_cache.h" | 19 #include "cc/tiles/image_decode_cache.h" |
16 | 20 |
17 namespace cc { | 21 namespace cc { |
18 | 22 |
19 class CC_EXPORT ImageController { | 23 class CC_EXPORT ImageController { |
20 public: | 24 public: |
21 ImageController(); | 25 using ImageDecodeRequestId = uint64_t; |
22 ~ImageController(); | 26 using ImageDecodedCallback = base::Callback<void(ImageDecodeRequestId)>; |
| 27 explicit ImageController( |
| 28 base::SequencedTaskRunner* origin_task_runner, |
| 29 scoped_refptr<base::SequencedTaskRunner> worker_task_runner); |
| 30 virtual ~ImageController(); |
23 | 31 |
24 void SetImageDecodeCache(ImageDecodeCache* cache); | 32 void SetImageDecodeCache(ImageDecodeCache* cache); |
25 void GetTasksForImagesAndRef( | 33 void GetTasksForImagesAndRef( |
26 std::vector<DrawImage>* images, | 34 std::vector<DrawImage>* images, |
27 std::vector<scoped_refptr<TileTask>>* tasks, | 35 std::vector<scoped_refptr<TileTask>>* tasks, |
28 const ImageDecodeCache::TracingInfo& tracing_info); | 36 const ImageDecodeCache::TracingInfo& tracing_info); |
29 void UnrefImages(const std::vector<DrawImage>& images); | 37 void UnrefImages(const std::vector<DrawImage>& images); |
30 void ReduceMemoryUsage(); | 38 void ReduceMemoryUsage(); |
31 std::vector<scoped_refptr<TileTask>> SetPredecodeImages( | 39 std::vector<scoped_refptr<TileTask>> SetPredecodeImages( |
32 std::vector<DrawImage> predecode_images, | 40 std::vector<DrawImage> predecode_images, |
33 const ImageDecodeCache::TracingInfo& tracing_info); | 41 const ImageDecodeCache::TracingInfo& tracing_info); |
34 | 42 |
| 43 // Virtual for testing. |
| 44 virtual void UnlockImageDecode(ImageDecodeRequestId id); |
| 45 |
| 46 // This function requests that the given image be decoded and locked. Once the |
| 47 // callback has been issued, it is passed an ID, which should be used to |
| 48 // unlock this image. It is up to the caller to ensure that the image is later |
| 49 // unlocked using UnlockImageDecode. |
| 50 // Virtual for testing. |
| 51 virtual ImageDecodeRequestId QueueImageDecode( |
| 52 sk_sp<const SkImage> image, |
| 53 const ImageDecodedCallback& callback); |
| 54 |
35 private: | 55 private: |
| 56 struct ImageDecodeRequest { |
| 57 ImageDecodeRequest(); |
| 58 ImageDecodeRequest(ImageDecodeRequestId id, |
| 59 const DrawImage& draw_image, |
| 60 const ImageDecodedCallback& callback, |
| 61 scoped_refptr<TileTask> task, |
| 62 bool need_unref); |
| 63 ImageDecodeRequest(ImageDecodeRequest&& other); |
| 64 ImageDecodeRequest(const ImageDecodeRequest& other); |
| 65 ~ImageDecodeRequest(); |
| 66 |
| 67 ImageDecodeRequest& operator=(ImageDecodeRequest&& other); |
| 68 ImageDecodeRequest& operator=(const ImageDecodeRequest& other); |
| 69 |
| 70 ImageDecodeRequestId id; |
| 71 DrawImage draw_image; |
| 72 ImageDecodedCallback callback; |
| 73 scoped_refptr<TileTask> task; |
| 74 bool need_unref; |
| 75 }; |
| 76 |
| 77 void StopWorkerTasks(); |
| 78 |
| 79 // Called from the worker thread. |
| 80 void ProcessNextImageDecodeOnWorkerThread(); |
| 81 |
| 82 void ImageDecodeCompleted(ImageDecodeRequestId id); |
| 83 |
36 ImageDecodeCache* cache_ = nullptr; | 84 ImageDecodeCache* cache_ = nullptr; |
37 std::vector<DrawImage> predecode_locked_images_; | 85 std::vector<DrawImage> predecode_locked_images_; |
38 | 86 |
| 87 static ImageDecodeRequestId s_next_image_decode_queue_id_; |
| 88 std::unordered_map<ImageDecodeRequestId, DrawImage> requested_locked_images_; |
| 89 |
| 90 base::SequencedTaskRunner* origin_task_runner_ = nullptr; |
| 91 scoped_refptr<base::SequencedTaskRunner> worker_task_runner_; |
| 92 |
| 93 // The variables defined below this lock (aside from weak_ptr_factory_) can |
| 94 // only be accessed when the lock is acquired. |
| 95 base::Lock lock_; |
| 96 std::map<ImageDecodeRequestId, ImageDecodeRequest> image_decode_queue_; |
| 97 std::map<ImageDecodeRequestId, ImageDecodeRequest> |
| 98 requests_needing_completion_; |
| 99 bool abort_tasks_ = false; |
| 100 |
| 101 base::WeakPtrFactory<ImageController> weak_ptr_factory_; |
| 102 |
39 DISALLOW_COPY_AND_ASSIGN(ImageController); | 103 DISALLOW_COPY_AND_ASSIGN(ImageController); |
40 }; | 104 }; |
41 | 105 |
42 } // namespace cc | 106 } // namespace cc |
43 | 107 |
44 #endif // CC_TILES_IMAGE_CONTROLLER_H_ | 108 #endif // CC_TILES_IMAGE_CONTROLLER_H_ |
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