92 lines
1.6 KiB
C++
92 lines
1.6 KiB
C++
#ifndef MEMORYCACHE_H
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#define MEMORYCACHE_H
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#include <QList>
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#include <QMutex>
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#include "framebufferobject.h"
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#include "memorybuffer.h"
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class ImageCache
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{
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public:
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enum BufferType {
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kInvalidBuf,
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kMemBuf, // RAM (CPU) buffer
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kTexBuf // VRAM (GPU) buffer
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};
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class Ref {
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public:
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Ref(ImageCache* cache);
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~Ref();
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void Relinquish();
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protected:
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void* BufferInternal();
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BufferType buffer_type_;
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int width_;
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int height_;
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private:
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void Request();
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ImageCache* cache_;
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int buffer_;
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};
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class ImgRef : public Ref {
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public:
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ImgRef(ImageCache* cache);
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void SetSize(int w, int h);
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MemoryBuffer* buffer();
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};
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class TexRef : public Ref {
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public:
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TexRef(ImageCache* cache);
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FramebufferObject* buffer();
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};
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ImageCache();
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~ImageCache();
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void SetParameters(QOpenGLContext* ctx, int width, int height);
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private:
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int RequestBuffer(Ref *r, const BufferType& type, int width, int height);
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int RequestBufferInternal(Ref *r, const BufferType& type, int width, int height);
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void RelinquishBuffer(int index, const BufferType& type);
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void *Buffer(int index, const BufferType &type);
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bool OutOfMemory();
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void Clear();
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QList<MemoryBuffer> img_buffers_;
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QList<Ref*> img_refs_;
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QList<time_t> img_access_times_;
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QList<int> img_relinquished_;
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QList<FramebufferObject> tex_buffers_;
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QList<Ref*> tex_refs_;
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QList<time_t> tex_access_times_;
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QList<int> tex_relinquished_;
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QOpenGLContext* ctx_;
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int width_;
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int height_;
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QMutex buffer_array_mutex_;
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};
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#endif // MEMORYCACHE_H
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