ogl_texturecache.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include <sal/types.h>
#include <unordered_map>
 
namespace com::sun::star::geometry { struct IntegerSize2D; }
 
 
namespace oglcanvas
{
    class TextureCache
    {
    public:
        TextureCache();
        ~TextureCache();
 
        void flush();
 
        void prune();
 
        size_t getCacheSize() const { return maCache.size(); };
        sal_uInt32 getCacheMissCount() const { return mnMissCount; }
        sal_uInt32 getCacheHitCount() const { return mnHitCount; }
 
        unsigned int getTexture( const css::geometry::IntegerSize2D& rPixelSize,
                                 const sal_Int8*                                  pPixel,
                                 sal_uInt32                                       nPixelCrc32) const;
    private:
        struct CacheEntry
        {
            CacheEntry() : nTexture(0), bOld(false) {}
            unsigned int nTexture;
            bool bOld;
        };
        typedef std::unordered_map<sal_uInt32,CacheEntry> TextureCacheMapT;
        mutable TextureCacheMapT maCache;
        mutable sal_uInt32       mnMissCount;
        mutable sal_uInt32       mnHitCount;
    };
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */