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1 // Copyright 2017 The Chromium Authors. All rights reserved. | 1 // Copyright 2017 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_CHECKER_IMAGE_TRACKER_H_ | 5 #ifndef CC_TILES_CHECKER_IMAGE_TRACKER_H_ |
6 #define CC_TILES_CHECKER_IMAGE_TRACKER_H_ | 6 #define CC_TILES_CHECKER_IMAGE_TRACKER_H_ |
7 | 7 |
8 #include <unordered_map> | 8 #include <unordered_map> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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26 // CheckerImageTracker is used to track the set of images in a frame which are | 26 // CheckerImageTracker is used to track the set of images in a frame which are |
27 // decoded asynchronously, using the ImageDecodeService, from the rasterization | 27 // decoded asynchronously, using the ImageDecodeService, from the rasterization |
28 // of tiles which depend on them. Once decoded, these images are stored for | 28 // of tiles which depend on them. Once decoded, these images are stored for |
29 // invalidation on the next sync tree. TakeImagesToInvalidateOnSyncTree will | 29 // invalidation on the next sync tree. TakeImagesToInvalidateOnSyncTree will |
30 // return this set and maintain a copy to keeps these images locked until the | 30 // return this set and maintain a copy to keeps these images locked until the |
31 // sync tree is activated. | 31 // sync tree is activated. |
32 // Note: It is illegal to call TakeImagesToInvalidateOnSyncTree for the next | 32 // Note: It is illegal to call TakeImagesToInvalidateOnSyncTree for the next |
33 // sync tree until the previous tree is activated. | 33 // sync tree until the previous tree is activated. |
34 class CC_EXPORT CheckerImageTracker { | 34 class CC_EXPORT CheckerImageTracker { |
35 public: | 35 public: |
36 enum class DecodeType { kRaster, kPreDecode }; | |
vmpstr
2017/06/12 21:45:30
Comment please
Khushal
2017/06/14 00:29:19
Done.
| |
37 | |
38 struct ImageDecodeRequest { | |
39 ImageDecodeRequest(PaintImage paint_image, DecodeType type); | |
40 PaintImage paint_image; | |
41 DecodeType type; | |
42 }; | |
43 | |
36 CheckerImageTracker(ImageController* image_controller, | 44 CheckerImageTracker(ImageController* image_controller, |
37 CheckerImageTrackerClient* client, | 45 CheckerImageTrackerClient* client, |
38 bool enable_checker_imaging); | 46 bool enable_checker_imaging); |
39 ~CheckerImageTracker(); | 47 ~CheckerImageTracker(); |
40 | 48 |
41 // Returns true if the decode for |image| will be deferred to the image decode | 49 // Returns true if the decode for |image| will be deferred to the image decode |
42 // service and it should be be skipped during raster. | 50 // service and it should be be skipped during raster. |
43 bool ShouldCheckerImage(const DrawImage& image, WhichTree tree); | 51 bool ShouldCheckerImage(const DrawImage& image, WhichTree tree); |
44 | 52 |
45 using ImageDecodeQueue = std::vector<PaintImage>; | 53 // Provides a prioritized queue of images to decode. |
54 using ImageDecodeQueue = std::vector<ImageDecodeRequest>; | |
46 void ScheduleImageDecodeQueue(ImageDecodeQueue image_decode_queue); | 55 void ScheduleImageDecodeQueue(ImageDecodeQueue image_decode_queue); |
47 | 56 |
57 // Sets whether decode work should be scheduled for pre-decode tiles. | |
58 void SetCanSchedulePredecodeImages(bool can_schedule_predecode_images); | |
59 | |
48 // Returns the set of images to invalidate on the sync tree. | 60 // Returns the set of images to invalidate on the sync tree. |
49 const PaintImageIdFlatSet& TakeImagesToInvalidateOnSyncTree(); | 61 const PaintImageIdFlatSet& TakeImagesToInvalidateOnSyncTree(); |
50 | 62 |
51 // Called when the sync tree is activated. Each call to | 63 // Called when the sync tree is activated. Each call to |
52 // TakeImagesToInvalidateOnSyncTree() must be followed by this when the | 64 // TakeImagesToInvalidateOnSyncTree() must be followed by this when the |
53 // invalidated sync tree is activated. | 65 // invalidated sync tree is activated. |
54 void DidActivateSyncTree(); | 66 void DidActivateSyncTree(); |
55 | 67 |
56 // Called to reset the tracker state on navigation. This will release all | 68 // Called to reset the tracker state on navigation. This will release all |
57 // cached images. Setting |can_clear_decode_policy_tracking| will also result | 69 // cached images. Setting |can_clear_decode_policy_tracking| will also result |
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123 PaintImageIdFlatSet images_pending_invalidation_; | 135 PaintImageIdFlatSet images_pending_invalidation_; |
124 | 136 |
125 // A set of images which were invalidated on the current sync tree. | 137 // A set of images which were invalidated on the current sync tree. |
126 PaintImageIdFlatSet invalidated_images_on_current_sync_tree_; | 138 PaintImageIdFlatSet invalidated_images_on_current_sync_tree_; |
127 | 139 |
128 // The queue of images pending decode. We maintain a queue to ensure that the | 140 // The queue of images pending decode. We maintain a queue to ensure that the |
129 // order in which images are decoded is aligned with the priority of the tiles | 141 // order in which images are decoded is aligned with the priority of the tiles |
130 // dependent on these images. | 142 // dependent on these images. |
131 ImageDecodeQueue image_decode_queue_; | 143 ImageDecodeQueue image_decode_queue_; |
132 | 144 |
145 // Whether we can schedule decodes for pre-decoded images. | |
146 bool can_schedule_predecode_images_ = false; | |
147 | |
133 // The currently outstanding image decode that has been scheduled with the | 148 // The currently outstanding image decode that has been scheduled with the |
134 // decode service. There can be only one outstanding decode at a time. | 149 // decode service. There can be only one outstanding decode at a time. |
135 base::Optional<PaintImage> outstanding_image_decode_; | 150 base::Optional<PaintImage> outstanding_image_decode_; |
136 | 151 |
137 // A map of ImageId to its DecodePolicy. | 152 // A map of ImageId to its DecodePolicy. |
138 std::unordered_map<PaintImage::Id, DecodeState> image_async_decode_state_; | 153 std::unordered_map<PaintImage::Id, DecodeState> image_async_decode_state_; |
139 | 154 |
140 // A map of image id to image decode request id for images to be unlocked. | 155 // A map of image id to image decode request id for images to be unlocked. |
141 std::unordered_map<PaintImage::Id, std::unique_ptr<ScopedDecodeHolder>> | 156 std::unordered_map<PaintImage::Id, std::unique_ptr<ScopedDecodeHolder>> |
142 image_id_to_decode_; | 157 image_id_to_decode_; |
143 | 158 |
144 base::WeakPtrFactory<CheckerImageTracker> weak_factory_; | 159 base::WeakPtrFactory<CheckerImageTracker> weak_factory_; |
145 | 160 |
146 DISALLOW_COPY_AND_ASSIGN(CheckerImageTracker); | 161 DISALLOW_COPY_AND_ASSIGN(CheckerImageTracker); |
147 }; | 162 }; |
148 | 163 |
149 } // namespace cc | 164 } // namespace cc |
150 | 165 |
151 #endif // CC_TILES_CHECKER_IMAGE_TRACKER_H_ | 166 #endif // CC_TILES_CHECKER_IMAGE_TRACKER_H_ |
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