1bcacfdcab
Test: No code changes, just ran through clang-format Change-Id: Id23aa4ec7eebc0446fe3a30260f33e7fd455bb8c
145 lines
3.9 KiB
C++
145 lines
3.9 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWUI_TEXTURE_CACHE_H
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#define ANDROID_HWUI_TEXTURE_CACHE_H
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#include <SkBitmap.h>
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#include <cutils/compiler.h>
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#include <utils/LruCache.h>
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#include <utils/Mutex.h>
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#include "Debug.h"
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#include <unordered_map>
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#include <vector>
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namespace android {
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class Bitmap;
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namespace uirenderer {
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class Texture;
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///////////////////////////////////////////////////////////////////////////////
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// Defines
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///////////////////////////////////////////////////////////////////////////////
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// Debug
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#if DEBUG_TEXTURES
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#define TEXTURE_LOGD(...) ALOGD(__VA_ARGS__)
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#else
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#define TEXTURE_LOGD(...)
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#endif
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///////////////////////////////////////////////////////////////////////////////
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// Classes
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///////////////////////////////////////////////////////////////////////////////
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/**
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* A simple LRU texture cache. The cache has a maximum size expressed in bytes.
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* Any texture added to the cache causing the cache to grow beyond the maximum
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* allowed size will also cause the oldest texture to be kicked out.
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*/
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class TextureCache : public OnEntryRemoved<uint32_t, Texture*> {
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public:
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TextureCache();
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~TextureCache();
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/**
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* Used as a callback when an entry is removed from the cache.
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* Do not invoke directly.
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*/
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void operator()(uint32_t&, Texture*& texture) override;
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/**
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* Resets all Textures to not be marked as in use
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*/
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void resetMarkInUse(void* ownerToken);
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/**
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* Attempts to precache the SkBitmap. Returns true if a Texture was successfully
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* acquired for the bitmap, false otherwise. If a Texture was acquired it is
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* marked as in use.
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*/
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bool prefetchAndMarkInUse(void* ownerToken, Bitmap* bitmap);
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/**
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* Attempts to precache the SkBitmap. Returns true if a Texture was successfully
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* acquired for the bitmap, false otherwise. Does not mark the Texture
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* as in use and won't update currently in-use Textures.
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*/
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bool prefetch(Bitmap* bitmap);
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/**
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* Returns the texture associated with the specified bitmap from within the cache.
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* If the texture cannot be found in the cache, a new texture is generated.
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*/
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Texture* get(Bitmap* bitmap);
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/**
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* Removes the texture associated with the specified pixelRef. Must be called from RenderThread
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* Returns true if a texture was destroyed, false if no texture with that id was found
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*/
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bool destroyTexture(uint32_t pixelRefStableID);
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/**
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* Clears the cache. This causes all textures to be deleted.
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*/
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void clear();
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/**
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* Returns the maximum size of the cache in bytes.
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*/
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uint32_t getMaxSize();
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/**
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* Returns the current size of the cache in bytes.
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*/
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uint32_t getSize();
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/**
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* Partially flushes the cache. The amount of memory freed by a flush
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* is defined by the flush rate.
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*/
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void flush();
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private:
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bool canMakeTextureFromBitmap(Bitmap* bitmap);
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Texture* getCachedTexture(Bitmap* bitmap);
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Texture* createTexture(Bitmap* bitmap);
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LruCache<uint32_t, Texture*> mCache;
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uint32_t mSize;
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const uint32_t mMaxSize;
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GLint mMaxTextureSize;
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const float mFlushRate;
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bool mDebugEnabled;
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std::unordered_map<uint32_t, std::unique_ptr<Texture>> mHardwareTextures;
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}; // class TextureCache
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_TEXTURE_CACHE_H
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