CLTexImage.h

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//  File:       CLTexImage.h
//  Author:     Changchang Wu
//  Description :   interface for the CLTexImage class.
//                  class for storing data in CUDA.
//
//  Copyright (c) 2007 University of North Carolina at Chapel Hill
//  All Rights Reserved
//
//  Permission to use, copy, modify and distribute this software and its
//  documentation for educational, research and non-profit purposes, without
//  fee, and without a written agreement is hereby granted, provided that the
//  above copyright notice and the following paragraph appear in all copies.
//  
//  The University of North Carolina at Chapel Hill make no representations
//  about the suitability of this software for any purpose. It is provided
//  'as is' without express or implied warranty. 
//
//  Please send BUG REPORTS to ccwu@cs.unc.edu
//
#if defined(CL_SIFTGPU_ENABLED)
 
#ifndef CL_TEX_IMAGE_H
#define CL_TEX_IMAGE_H
 
class GLTexImage;
 
class CLTexImage
{   
protected:
    cl_context          _context;
    cl_command_queue    _queue;
    cl_mem              _clData;
    int                 _numChannel;
    int                 _imgWidth;
    int                 _imgHeight;
    int                 _texWidth;
    int                 _texHeight;
    int                 _bufferLen;
    int                 _fromGL;
private:
    void ReleaseTexture(); 
public:
    void SetImageSize(int width, int height);
    void SetPackedSize(int width, int height, int packed);
    void InitBufferTex(int width, int height, int nchannel);
    void InitTexture(int width, int height, int nchannel);
    void InitPackedTex(int width, int height, int packed);
    void InitTextureGL(GLuint tex, int width, int height, int nchannel);
    void CopyToHost(void* buf);
    void CopyFromHost(const void* buf);
public:
    int CopyToPBO(GLuint pbo);
    int GetImageDataSize();
public:
    inline operator cl_mem(){return _clData; }
    inline int GetImgWidth(){return _imgWidth;}
    inline int GetImgHeight(){return _imgHeight;}
    inline int GetTexWidth(){return _texWidth;}
    inline int GetTexHeight(){return _texHeight;}
    inline int GetDataSize(){return _bufferLen;}
    inline bool IsImage2D() {return _bufferLen == 0;}
    inline int GetImgPixelCount(){return _imgWidth*_imgHeight;}
    inline int GetTexPixelCount(){return _texWidth*_texHeight;}
public:
    CLTexImage();
    CLTexImage(cl_context context, cl_command_queue queue);
    void SetContext(cl_context context, cl_command_queue queue);
    virtual ~CLTexImage();
    friend class ProgramCL;
    friend class PyramidCL;
    friend class ProgramBagCL;
    friend class ProgramBagCLN;
};
 
//transfer OpenGL Texture to PBO, then to CUDA vector
//#endif 
#endif // !defined(CU_TEX_IMAGE_H)
#endif