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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_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_ | 5 #ifndef CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_ |
6 #define CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_ | 6 #define CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <unordered_map> | 10 #include <unordered_map> |
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98 using ImageKey = ImageDecodeControllerKey; | 98 using ImageKey = ImageDecodeControllerKey; |
99 using ImageKeyHash = ImageDecodeControllerKeyHash; | 99 using ImageKeyHash = ImageDecodeControllerKeyHash; |
100 | 100 |
101 explicit SoftwareImageDecodeController(ResourceFormat format); | 101 explicit SoftwareImageDecodeController(ResourceFormat format); |
102 SoftwareImageDecodeController(); | 102 SoftwareImageDecodeController(); |
103 ~SoftwareImageDecodeController() override; | 103 ~SoftwareImageDecodeController() override; |
104 | 104 |
105 // ImageDecodeController overrides. | 105 // ImageDecodeController overrides. |
106 bool GetTaskForImageAndRef(const DrawImage& image, | 106 bool GetTaskForImageAndRef(const DrawImage& image, |
107 uint64_t prepare_tiles_id, | 107 uint64_t prepare_tiles_id, |
108 scoped_refptr<ImageDecodeTask>* task) override; | 108 scoped_refptr<Task>* task) override; |
109 void UnrefImage(const DrawImage& image) override; | 109 void UnrefImage(const DrawImage& image) override; |
110 DecodedDrawImage GetDecodedImageForDraw(const DrawImage& image) override; | 110 DecodedDrawImage GetDecodedImageForDraw(const DrawImage& image) override; |
111 void DrawWithImageFinished(const DrawImage& image, | 111 void DrawWithImageFinished(const DrawImage& image, |
112 const DecodedDrawImage& decoded_image) override; | 112 const DecodedDrawImage& decoded_image) override; |
113 void ReduceCacheUsage() override; | 113 void ReduceCacheUsage() override; |
114 | 114 |
115 // Decode the given image and store it in the cache. This is only called by an | 115 // Decode the given image and store it in the cache. This is only called by an |
116 // image decode task from a worker thread. | 116 // image decode task from a worker thread. |
117 void DecodeImage(const ImageKey& key, const DrawImage& image); | 117 void DecodeImage(const ImageKey& key, const DrawImage& image); |
118 | 118 |
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192 void RefAtRasterImage(const ImageKey& key); | 192 void RefAtRasterImage(const ImageKey& key); |
193 void UnrefAtRasterImage(const ImageKey& key); | 193 void UnrefAtRasterImage(const ImageKey& key); |
194 | 194 |
195 // These functions indicate whether the images can be handled and cached by | 195 // These functions indicate whether the images can be handled and cached by |
196 // ImageDecodeController or whether they will fall through to Skia (with | 196 // ImageDecodeController or whether they will fall through to Skia (with |
197 // exception of possibly prerolling them). Over time these should return | 197 // exception of possibly prerolling them). Over time these should return |
198 // "false" in less cases, as the ImageDecodeController should start handling | 198 // "false" in less cases, as the ImageDecodeController should start handling |
199 // more of them. | 199 // more of them. |
200 bool CanHandleImage(const ImageKey& key); | 200 bool CanHandleImage(const ImageKey& key); |
201 | 201 |
202 std::unordered_map<ImageKey, scoped_refptr<ImageDecodeTask>, ImageKeyHash> | 202 std::unordered_map<ImageKey, scoped_refptr<Task>, ImageKeyHash> |
203 pending_image_tasks_; | 203 pending_image_tasks_; |
204 | 204 |
205 // The members below this comment can only be accessed if the lock is held to | 205 // The members below this comment can only be accessed if the lock is held to |
206 // ensure that they are safe to access on multiple threads. | 206 // ensure that they are safe to access on multiple threads. |
207 base::Lock lock_; | 207 base::Lock lock_; |
208 | 208 |
209 using ImageMRUCache = | 209 using ImageMRUCache = |
210 base::HashingMRUCache<ImageKey, scoped_ptr<DecodedImage>, ImageKeyHash>; | 210 base::HashingMRUCache<ImageKey, scoped_ptr<DecodedImage>, ImageKeyHash>; |
211 | 211 |
212 // Decoded images and ref counts (predecode path). | 212 // Decoded images and ref counts (predecode path). |
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224 // image the first time we see it. This mimics the previous behavior and | 224 // image the first time we see it. This mimics the previous behavior and |
225 // should over time change as the compositor starts to handle more cases. | 225 // should over time change as the compositor starts to handle more cases. |
226 std::unordered_set<uint32_t> prerolled_images_; | 226 std::unordered_set<uint32_t> prerolled_images_; |
227 | 227 |
228 ResourceFormat format_; | 228 ResourceFormat format_; |
229 }; | 229 }; |
230 | 230 |
231 } // namespace cc | 231 } // namespace cc |
232 | 232 |
233 #endif // CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_ | 233 #endif // CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_ |
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