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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
vmpstr
2017/02/03 23:42:32
2017
Khushal
2017/02/07 00:25:32
Done.
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2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "cc/tiles/checker_image_tracker.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "cc/playback/raster_source.h" | |
9 #include "cc/tiles/picture_layer_tiling.h" | |
10 #include "cc/tiles/prioritized_tile.h" | |
11 #include "cc/tiles/tile.h" | |
12 #include "cc/trees/layer_tree_impl.h" | |
13 | |
14 namespace cc { | |
15 namespace { | |
16 // The minimum size of an image that we should consider checkering. | |
17 size_t kMinImageSizeToCheckerBytes = 512 * 1024; | |
18 } // namespace | |
19 | |
20 CheckerImageTracker::CheckerImageTracker(ImageController* image_controller, | |
21 CheckerImageTrackerClient* client, | |
22 bool enable_checker_imaging) | |
23 : image_controller_(image_controller), | |
24 client_(client), | |
25 enable_checker_imaging_(enable_checker_imaging), | |
26 weak_factory_(this) {} | |
27 | |
28 CheckerImageTracker::~CheckerImageTracker() { | |
29 // Unlock all images pending decode requests. | |
30 for (auto it : image_id_to_decode_request_id_) { | |
vmpstr
2017/02/03 23:42:32
nit: no braces
Khushal
2017/02/07 00:25:32
Done.
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31 image_controller_->UnlockImageDecode(it.second); | |
32 } | |
33 } | |
34 | |
35 void CheckerImageTracker::FilterImagesForCheckeringForTile( | |
36 const PrioritizedTile& prioritized_tile, | |
vmpstr
2017/02/03 23:42:32
I'd prefer if we don't expose prioritized tile her
Khushal
2017/02/07 00:25:32
Awesome suggestion, eliminating all of these makes
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37 std::vector<DrawImage>* images, | |
38 std::unordered_set<ImageId>* checkered_images) { | |
39 DCHECK(images->empty()); | |
40 DCHECK(checkered_images->empty()); | |
41 | |
42 Tile* tile = prioritized_tile.tile(); | |
43 prioritized_tile.raster_source()->GetDiscardableImagesInRect( | |
44 tile->enclosing_layer_rect(), tile->contents_scale(), images); | |
45 WhichTree tree = tile->tiling()->tree(); | |
46 | |
47 for (std::vector<DrawImage>::iterator it = images->begin(); | |
48 it != images->end();) { | |
49 const sk_sp<const SkImage> image = it->image(); | |
50 if (AnalyzeImageForCheckeringAndScheduleDecodeIfNecessary(image, tree)) { | |
51 checkered_images->insert(image->uniqueID()); | |
52 it = images->erase(it); | |
53 } else { | |
54 ++it; | |
55 } | |
56 } | |
57 } | |
58 | |
59 void CheckerImageTracker::AddInvalidationForCheckerImages( | |
vmpstr
2017/02/03 23:42:32
I think this should be something like
Region Take
Khushal
2017/02/07 00:25:32
Great suggestion. Can't return the region since on
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60 LayerTreeImpl* sync_tree) { | |
61 DCHECK(images_invalidated_on_current_sync_tree_.empty()) | |
62 << "Can not invalidate again on the sync tree"; | |
63 | |
64 sync_tree->InvalidateRegionForImages(images_pending_invalidation_); | |
65 images_invalidated_on_current_sync_tree_.swap(images_pending_invalidation_); | |
vmpstr
2017/02/03 23:42:32
Should images_pending_invalidation_ be cleared her
Khushal
2017/02/07 00:25:32
Hmmm, there is a DCHECK above to assert that |imag
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66 } | |
67 | |
68 void CheckerImageTracker::DidActivateSyncTree() { | |
69 for (auto image_id : images_invalidated_on_current_sync_tree_) { | |
70 auto it = image_id_to_decode_request_id_.find(image_id); | |
71 image_controller_->UnlockImageDecode(it->second); | |
72 image_id_to_decode_request_id_.erase(it); | |
73 } | |
74 | |
75 images_invalidated_on_current_sync_tree_.clear(); | |
76 } | |
77 | |
78 void CheckerImageTracker::DidFinishImageDecode( | |
79 ImageId image_id, | |
80 ImageController::ImageDecodeRequestId request_id) { | |
81 TRACE_EVENT_ASYNC_END0("cc", "CheckerImageTracker::DeferImageDecode", | |
82 image_id); | |
83 | |
84 auto it = pending_image_decodes_.find(image_id); | |
85 DCHECK(it != pending_image_decodes_.end()); | |
86 pending_image_decodes_.erase(it); | |
vmpstr
2017/02/03 23:42:32
We typically write this type of pattern as:
DCHEC
Khushal
2017/02/07 00:25:32
Done.
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87 | |
88 images_decoded_once_.insert(image_id); | |
89 images_pending_invalidation_.insert(image_id); | |
90 client_->NeedsInvalidationForCheckerImagedTiles(); | |
91 } | |
92 | |
93 bool CheckerImageTracker::AnalyzeImageForCheckeringAndScheduleDecodeIfNecessary( | |
vmpstr
2017/02/03 23:42:32
I think this name makes it clear that this should
Khushal
2017/02/07 00:25:32
Done.
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94 const sk_sp<const SkImage> image, | |
95 WhichTree tree) { | |
96 TRACE_EVENT1("cc", "CheckerImageTracker::AnalyzeImageForCheckering", | |
97 "image_id", image->uniqueID()); | |
98 if (!enable_checker_imaging_) { | |
vmpstr
2017/02/03 23:42:32
nit (here and elsewhere), remove braces from singl
Khushal
2017/02/07 00:25:32
Done.
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99 return false; | |
100 } | |
101 | |
102 // If the image doesn't need to be decoded. | |
103 if (!image->isLazyGenerated()) { | |
vmpstr
2017/02/03 23:42:32
If this is coming from discardable image map, then
Khushal
2017/02/07 00:25:32
Done.
| |
104 return false; | |
105 } | |
106 | |
107 // If a decode request is pending for this image, continue checkering it. | |
108 if (pending_image_decodes_.find(image->uniqueID()) != | |
109 pending_image_decodes_.end()) { | |
110 return true; | |
111 } | |
112 | |
113 // If the image is pending invalidation, continue checkering it. All tiles | |
114 // for these images will be invalidated on the next pending tree. | |
115 if (images_pending_invalidation_.find(image->uniqueID()) != | |
116 images_pending_invalidation_.end()) { | |
117 return true; | |
118 } | |
119 | |
120 // If the image was invalidated on the current sync tree and the tile is | |
121 // for the active tree, continue checkering it on the active tree to ensure | |
122 // the image update is atomic for the frame. | |
123 if (images_invalidated_on_current_sync_tree_.count(image->uniqueID()) != 0 && | |
124 tree == WhichTree::ACTIVE_TREE) { | |
vmpstr
2017/02/03 23:42:32
Check the tree first, since it's much quicker.
Khushal
2017/02/07 00:25:32
Done.
| |
125 return true; | |
126 } | |
127 | |
128 // If the image has been decoded once before, don't checker it again. | |
129 if (images_decoded_once_.find(image->uniqueID()) != | |
130 images_decoded_once_.end()) { | |
131 return false; | |
132 } | |
133 | |
134 base::CheckedNumeric<size_t> checked_size = 4; | |
135 checked_size *= image->width(); | |
136 checked_size *= image->height(); | |
137 size_t image_size = | |
138 checked_size.ValueOrDefault(std::numeric_limits<size_t>::max()); | |
139 bool defer_image_decode = image_size >= kMinImageSizeToCheckerBytes; | |
140 | |
141 if (defer_image_decode) { | |
vmpstr
2017/02/03 23:42:32
if (!defer_image_decode)
return false;
...
Khushal
2017/02/07 00:25:32
Simpler now?
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142 ImageId image_id = image->uniqueID(); | |
143 TRACE_EVENT_ASYNC_BEGIN0("cc", "CheckerImageTracker::DeferImageDecode", | |
144 image_id); | |
145 DCHECK_EQ(image_id_to_decode_request_id_.count(image_id), 0U); | |
146 | |
147 image_id_to_decode_request_id_[image_id] = | |
148 image_controller_->QueueImageDecode( | |
149 image, base::Bind(&CheckerImageTracker::DidFinishImageDecode, | |
150 weak_factory_.GetWeakPtr(), image_id)); | |
151 pending_image_decodes_.insert(image_id); | |
152 } | |
153 | |
154 return defer_image_decode; | |
155 } | |
156 | |
157 } // namespace cc | |
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