RemoteSensingFrank/UAVProduct

////////////////////////////////////////////////////////////////////////////
//    File:        CuTexImage.h
//    Author:        Changchang Wu
//    Description :    interface for the CuTexImage 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
//
////////////////////////////////////////////////////////////////////////////


#ifndef CU_TEX_IMAGE_H
#define CU_TEX_IMAGE_H

class GLTexImage;
struct cudaArray;
struct textureReference;

//using texture2D from linear memory

#define SIFTGPU_ENABLE_LINEAR_TEX2D

class CuTexImage
{    
protected:
    void*        _cuData;
    cudaArray*    _cuData2D;
    int            _numChannel;
    int            _numBytes;
    int            _imgWidth;
    int            _imgHeight;
    int            _texWidth;
    int            _texHeight;
    GLuint        _fromPBO;
public:
    virtual void SetImageSize(int width, int height);
    virtual void InitTexture(int width, int height, int nchannel = 1);
    void InitTexture2D();
    inline void BindTexture(textureReference& texRef);
    inline void BindTexture2D(textureReference& texRef);
    void CopyToTexture2D();
    void CopyToHost(void* buf);
    void CopyToHost(void* buf, int stream);
    void CopyFromHost(const void* buf);
    int  CopyToPBO(GLuint pbo);
    void CopyFromPBO(int width, int height, GLuint pbo);
    static int DebugCopyToTexture2D();
public:
    inline int GetImgWidth(){return _imgWidth;}
    inline int GetImgHeight(){return _imgHeight;}
    inline int GetDataSize(){return _numBytes;}
public:
    CuTexImage();
    CuTexImage(int width, int height, int nchannel, GLuint pbo);
    virtual ~CuTexImage();
    friend class ProgramCU;
    friend class PyramidCU;
};

//////////////////////////////////////////////////
//transfer OpenGL Texture to PBO, then to CUDA vector
//#endif 
#endif // !defined(CU_TEX_IMAGE_H)