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Unified Diff: cc/resources/eviction_tile_priority_queue.cc

Issue 1144693002: cc: Move files out of cc/resources/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: resources: android Created 5 years, 7 months ago
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Index: cc/resources/eviction_tile_priority_queue.cc
diff --git a/cc/resources/eviction_tile_priority_queue.cc b/cc/resources/eviction_tile_priority_queue.cc
deleted file mode 100644
index 3a4cb832e41075cce8f14ab343eacda60879e22f..0000000000000000000000000000000000000000
--- a/cc/resources/eviction_tile_priority_queue.cc
+++ /dev/null
@@ -1,161 +0,0 @@
-// Copyright 2014 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.
-
-#include "cc/resources/eviction_tile_priority_queue.h"
-
-namespace cc {
-
-namespace {
-
-class EvictionOrderComparator {
- public:
- explicit EvictionOrderComparator(TreePriority tree_priority)
- : tree_priority_(tree_priority) {}
-
- bool operator()(const TilingSetEvictionQueue* a_queue,
- const TilingSetEvictionQueue* b_queue) const {
- // Note that in this function, we have to return true if and only if
- // b is strictly lower priority than a.
- const PrioritizedTile& a_tile = a_queue->Top();
- const PrioritizedTile& b_tile = b_queue->Top();
-
- const TilePriority& a_priority = a_tile.priority();
- const TilePriority& b_priority = b_tile.priority();
- bool prioritize_low_res = tree_priority_ == SMOOTHNESS_TAKES_PRIORITY;
-
- // If the priority bin differs, b is lower priority if it has the higher
- // priority bin.
- if (a_priority.priority_bin != b_priority.priority_bin)
- return b_priority.priority_bin > a_priority.priority_bin;
-
- // Otherwise if the resolution differs, then the order will be determined by
- // whether we prioritize low res or not.
- // TODO(vmpstr): Remove this when TilePriority is no longer a member of Tile
- // class but instead produced by the iterators.
- if (b_priority.resolution != a_priority.resolution) {
- // Non ideal resolution should be sorted higher than other resolutions.
- if (a_priority.resolution == NON_IDEAL_RESOLUTION)
- return false;
-
- if (b_priority.resolution == NON_IDEAL_RESOLUTION)
- return true;
-
- if (prioritize_low_res)
- return a_priority.resolution == LOW_RESOLUTION;
- return a_priority.resolution == HIGH_RESOLUTION;
- }
-
- // Otherwise if the occlusion differs, b is lower priority if it is
- // occluded.
- bool a_is_occluded = a_tile.is_occluded();
- bool b_is_occluded = b_tile.is_occluded();
- if (a_is_occluded != b_is_occluded)
- return b_is_occluded;
-
- // b is lower priorty if it is farther from visible.
- return b_priority.distance_to_visible > a_priority.distance_to_visible;
- }
-
- private:
- TreePriority tree_priority_;
-};
-
-void CreateTilingSetEvictionQueues(
- const std::vector<PictureLayerImpl*>& layers,
- TreePriority tree_priority,
- ScopedPtrVector<TilingSetEvictionQueue>* queues) {
- DCHECK(queues->empty());
-
- for (auto* layer : layers) {
- scoped_ptr<TilingSetEvictionQueue> tiling_set_queue = make_scoped_ptr(
- new TilingSetEvictionQueue(layer->picture_layer_tiling_set()));
- // Queues will only contain non empty tiling sets.
- if (!tiling_set_queue->IsEmpty())
- queues->push_back(tiling_set_queue.Pass());
- }
- queues->make_heap(EvictionOrderComparator(tree_priority));
-}
-
-} // namespace
-
-EvictionTilePriorityQueue::EvictionTilePriorityQueue() {
-}
-
-EvictionTilePriorityQueue::~EvictionTilePriorityQueue() {
-}
-
-void EvictionTilePriorityQueue::Build(
- const std::vector<PictureLayerImpl*>& active_layers,
- const std::vector<PictureLayerImpl*>& pending_layers,
- TreePriority tree_priority) {
- tree_priority_ = tree_priority;
-
- CreateTilingSetEvictionQueues(active_layers, tree_priority, &active_queues_);
- CreateTilingSetEvictionQueues(pending_layers, tree_priority,
- &pending_queues_);
-}
-
-bool EvictionTilePriorityQueue::IsEmpty() const {
- return active_queues_.empty() && pending_queues_.empty();
-}
-
-const PrioritizedTile& EvictionTilePriorityQueue::Top() const {
- DCHECK(!IsEmpty());
- const ScopedPtrVector<TilingSetEvictionQueue>& next_queues = GetNextQueues();
- return next_queues.front()->Top();
-}
-
-void EvictionTilePriorityQueue::Pop() {
- DCHECK(!IsEmpty());
-
- ScopedPtrVector<TilingSetEvictionQueue>& next_queues = GetNextQueues();
- next_queues.pop_heap(EvictionOrderComparator(tree_priority_));
- TilingSetEvictionQueue* queue = next_queues.back();
- queue->Pop();
-
- // Remove empty queues.
- if (queue->IsEmpty())
- next_queues.pop_back();
- else
- next_queues.push_heap(EvictionOrderComparator(tree_priority_));
-}
-
-ScopedPtrVector<TilingSetEvictionQueue>&
-EvictionTilePriorityQueue::GetNextQueues() {
- return const_cast<ScopedPtrVector<TilingSetEvictionQueue>&>(
- static_cast<const EvictionTilePriorityQueue*>(this)->GetNextQueues());
-}
-
-const ScopedPtrVector<TilingSetEvictionQueue>&
-EvictionTilePriorityQueue::GetNextQueues() const {
- DCHECK(!IsEmpty());
-
- // If we only have one queue with tiles, return it.
- if (active_queues_.empty())
- return pending_queues_;
- if (pending_queues_.empty())
- return active_queues_;
-
- const PrioritizedTile& active_tile = active_queues_.front()->Top();
- const PrioritizedTile& pending_tile = pending_queues_.front()->Top();
-
- const TilePriority& active_priority = active_tile.priority();
- const TilePriority& pending_priority = pending_tile.priority();
-
- // If the bins are the same and activation differs, then return the tree of
- // the tile not required for activation.
- if (active_priority.priority_bin == pending_priority.priority_bin &&
- active_tile.tile()->required_for_activation() !=
- pending_tile.tile()->required_for_activation()) {
- return active_tile.tile()->required_for_activation() ? pending_queues_
- : active_queues_;
- }
-
- // Return tile with a lower priority.
- if (pending_priority.IsHigherPriorityThan(active_priority))
- return active_queues_;
- return pending_queues_;
-}
-
-} // namespace cc
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