| /* |
| * Copyright 2017 The Cobalt Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "cobalt/browser/memory_settings/scaling_function.h" |
| |
| #include <algorithm> |
| |
| #include "base/bind.h" |
| #include "base/bind_helpers.h" |
| #include "base/logging.h" |
| #include "cobalt/math/clamp.h" |
| #include "cobalt/math/linear_interpolator.h" |
| |
| namespace cobalt { |
| namespace browser { |
| namespace memory_settings { |
| namespace { |
| |
| double LinearFunctionWithClampValue(double min_clamp_value, |
| double max_clamp_value, |
| double requested_memory_scale) { |
| return math::Clamp(requested_memory_scale, min_clamp_value, max_clamp_value); |
| } |
| |
| double SkiaAtlasGlyphTextureConstrainer(double requested_memory_scale) { |
| if (requested_memory_scale > 0.5f) { |
| return 1.0f; |
| } else { |
| return 0.5f; |
| } |
| } |
| |
| } // namespace. |
| |
| ScalingFunction MakeLinearMemoryScaler(double min_clamp_value, |
| double max_clamp_value) { |
| ScalingFunction function = base::Bind(&LinearFunctionWithClampValue, |
| min_clamp_value, max_clamp_value); |
| return function; |
| } |
| |
| ScalingFunction MakeSkiaGlyphAtlasMemoryScaler() { |
| ScalingFunction function = base::Bind(&SkiaAtlasGlyphTextureConstrainer); |
| return function; |
| } |
| |
| } // namespace memory_settings |
| } // namespace browser |
| } // namespace cobalt |