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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CC_BLIMP_CLIENT_PICTURE_CACHE_H_ | |
| 6 #define CC_BLIMP_CLIENT_PICTURE_CACHE_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "third_party/skia/include/core/SkRefCnt.h" | |
| 11 | |
| 12 class SkPicture; | |
| 13 | |
| 14 namespace cc { | |
| 15 struct PictureData; | |
| 16 | |
| 17 // ClientPictureCache provides functionaltiy for marking when SkPictures are in | |
| 18 // use an when they stop being in use. PictureCacheUpdates are provided | |
| 19 // with all new SkPictures that a client needs and the respective unique IDs | |
| 20 // used on the engine. The SkPictures are kept in memory until they are no | |
| 21 // longer in use. | |
| 22 class ClientPictureCache { | |
| 23 public: | |
| 24 virtual ~ClientPictureCache() {} | |
| 25 | |
| 26 // MarkUsed must be called when the client has started using an SkPicture that | |
| 27 // was sent to from the engine. | |
| 28 virtual void MarkUsed(uint32_t engine_picture_id) = 0; | |
| 29 | |
| 30 // Retrieves an SkPicture from the in-memory cache. It is required that the | |
| 31 // provided ID is the same as the unique ID that is given through the cache | |
| 32 // update. | |
| 33 virtual sk_sp<const SkPicture> GetPicture(uint32_t engine_picture_id) = 0; | |
| 34 | |
| 35 // Called when a PictureCacheUpdate has been retrieved from the engine. This | |
| 36 // must contain all the new SkPictures that are in use. | |
| 37 virtual void ApplyCacheUpdate(const std::vector<PictureData>& pictures) = 0; | |
| 38 | |
| 39 // Flushes the current state of the cache, removing unused SkPictures. Must be | |
| 40 // called after deserialization is finished. | |
| 41 virtual void Flush() = 0; | |
| 42 }; | |
| 43 | |
| 44 } // namespace cc | |
| 45 | |
| 46 #endif // CC_BLIMP_CLIENT_PICTURE_CACHE_H_ | |
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