1bcacfdcab
Test: No code changes, just ran through clang-format Change-Id: Id23aa4ec7eebc0446fe3a30260f33e7fd455bb8c
116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/*
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* Copyright (C) 2013 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_RENDER_BUFFER_CACHE_H
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#define ANDROID_HWUI_RENDER_BUFFER_CACHE_H
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#include <GLES2/gl2.h>
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#include "RenderBuffer.h"
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#include <set>
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namespace android {
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namespace uirenderer {
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class RenderBufferCache {
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public:
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RenderBufferCache();
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~RenderBufferCache();
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/**
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* Returns a buffer with the exact specified dimensions. If no suitable
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* buffer can be found, a new one is created and returned. If creating a
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* new buffer fails, NULL is returned.
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*
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* When a buffer is obtained from the cache, it is removed and the total
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* size of the cache goes down.
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*
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* The returned buffer is always allocated and bound
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* (see RenderBuffer::isAllocated()).
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*
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* @param format The desired render buffer format
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* @param width The desired width of the buffer
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* @param height The desired height of the buffer
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*/
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RenderBuffer* get(GLenum format, const uint32_t width, const uint32_t height);
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/**
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* Adds the buffer to the cache. The buffer will not be added if there is
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* not enough space available. Adding a buffer can cause other buffer to
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* be removed from the cache.
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*
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* @param buffer The render buffer to add to the cache
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*
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* @return True if the buffer was added, false otherwise.
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*/
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bool put(RenderBuffer* buffer);
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/**
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* Clears the cache. This causes all layers 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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private:
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struct RenderBufferEntry {
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RenderBufferEntry() : mBuffer(nullptr), mWidth(0), mHeight(0) {}
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RenderBufferEntry(GLenum format, const uint32_t width, const uint32_t height)
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: mBuffer(nullptr), mFormat(format), mWidth(width), mHeight(height) {}
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explicit RenderBufferEntry(RenderBuffer* buffer)
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: mBuffer(buffer)
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, mFormat(buffer->getFormat())
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, mWidth(buffer->getWidth())
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, mHeight(buffer->getHeight()) {}
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static int compare(const RenderBufferEntry& lhs, const RenderBufferEntry& rhs);
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bool operator==(const RenderBufferEntry& other) const { return compare(*this, other) == 0; }
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bool operator!=(const RenderBufferEntry& other) const { return compare(*this, other) != 0; }
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bool operator<(const RenderBufferEntry& other) const {
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return RenderBufferEntry::compare(*this, other) < 0;
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}
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RenderBuffer* mBuffer;
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GLenum mFormat;
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uint32_t mWidth;
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uint32_t mHeight;
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}; // struct RenderBufferEntry
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void deleteBuffer(RenderBuffer* buffer);
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std::multiset<RenderBufferEntry> mCache;
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uint32_t mSize;
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uint32_t mMaxSize;
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}; // class RenderBufferCache
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_RENDER_BUFFER_CACHE_H
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