| // Copyright 2017 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_CHECKER_IMAGE_TRACKER_H_ |
| #define CC_TILES_CHECKER_IMAGE_TRACKER_H_ |
| |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "cc/base/cc_export.h" |
| #include "cc/playback/image_id.h" |
| #include "cc/tiles/image_controller.h" |
| #include "third_party/skia/include/core/SkImage.h" |
| |
| namespace cc { |
| |
| class CC_EXPORT CheckerImageTrackerClient { |
| public: |
| virtual ~CheckerImageTrackerClient() = default; |
| |
| virtual void NeedsInvalidationForCheckerImagedTiles() = 0; |
| }; |
| |
| // CheckerImageTracker is used to track the set of images in a frame which are |
| // decoded asynchronously, using the ImageDecodeService, from the rasterization |
| // of tiles which depend on them. Once decoded, these images are stored for |
| // invalidation on the next sync tree. TakeImagesToInvalidateOnSyncTree will |
| // return this set and maintain a copy to keeps these images locked until the |
| // sync tree is activated. |
| // Note: It is illegal to call TakeImagesToInvalidateOnSyncTree for the next |
| // sync tree until the previous tree is activated. |
| class CC_EXPORT CheckerImageTracker { |
| public: |
| CheckerImageTracker(ImageController* image_controller, |
| CheckerImageTrackerClient* client, |
| bool enable_checker_imaging); |
| ~CheckerImageTracker(); |
| |
| // Given the |images| for a tile, filters the images which will be deferred |
| // asynchronously using the image decoded service, eliminating them from |
| // |images| adds them to the |checkered_images| set, so they can be skipped |
| // during the rasterization of this tile. |
| // The entries remaining in |images| are for images for which a cached decode |
| // from the image decode service is available, or which must be decoded before |
| // before this tile can be rasterized. |
| void FilterImagesForCheckeringForTile(std::vector<DrawImage>* images, |
| ImageIdFlatSet* checkered_images, |
| WhichTree tree); |
| |
| // Returns the set of images to invalidate on the sync tree. |
| const ImageIdFlatSet& TakeImagesToInvalidateOnSyncTree(); |
| |
| void DidActivateSyncTree(); |
| |
| private: |
| void DidFinishImageDecode(ImageId image_id, |
| ImageController::ImageDecodeRequestId request_id, |
| ImageController::ImageDecodeResult result); |
| |
| // Returns true if the decode for |image| will be deferred to the image decode |
| // service and it should be be skipped during raster. |
| bool ShouldCheckerImage(const sk_sp<const SkImage>& image, |
| WhichTree tree) const; |
| |
| void ScheduleImageDecodeIfNecessary(const sk_sp<const SkImage>& image); |
| |
| ImageController* image_controller_; |
| CheckerImageTrackerClient* client_; |
| const bool enable_checker_imaging_; |
| |
| // A set of images which have been decoded and are pending invalidation for |
| // raster on the checkered tiles. |
| ImageIdFlatSet images_pending_invalidation_; |
| |
| // A set of images which were invalidated on the current sync tree. |
| ImageIdFlatSet invalidated_images_on_current_sync_tree_; |
| |
| // A set of images which are currently pending decode from the image decode |
| // service. |
| // TODO(khushalsagar): This should be a queue that gets re-built each time we |
| // do a PrepareTiles? See crbug.com/689184. |
| ImageIdFlatSet pending_image_decodes_; |
| |
| // A set of images which have been decoded at least once from the |
| // ImageDecodeService and should not be checkered again. |
| // TODO(khushalsagar): Limit the size of this set. |
| // TODO(khushalsagar): Plumb navigation changes here to reset this. See |
| // crbug.com/693228. |
| std::unordered_set<ImageId> images_decoded_once_; |
| |
| // A map of image id to image decode request id for images to be unlocked. |
| std::unordered_map<ImageId, ImageController::ImageDecodeRequestId> |
| image_id_to_decode_request_id_; |
| |
| base::WeakPtrFactory<CheckerImageTracker> weak_factory_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_TILES_CHECKER_IMAGE_TRACKER_H_ |