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////////////////////////////////////////////////////////////////////////////
// File: CuTexImage.h
// Author: Changchang Wu
// Description : interface for the CuTexImage class.
// class for storing data in CUDA.
//
// Copyright (c) 2011 Changchang Wu (ccwu@cs.washington.edu)
// and the University of Washington at Seattle
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// Version 3 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
////////////////////////////////////////////////////////////////////////////////
#ifndef CU_TEX_IMAGE_H
#define CU_TEX_IMAGE_H
struct textureReference;
namespace pba {
class CuTexImage {
protected:
bool _owner;
void* _cuData;
unsigned int _numChannel;
unsigned int _imgWidth;
unsigned int _imgHeight;
size_t _numBytes;
public:
bool InitTexture(unsigned int width, unsigned int height,
unsigned int nchannel = 1);
void SetTexture(void* data, unsigned int width, unsigned int nchannel = 1);
void BindTexture(textureReference& texRef);
void BindTexture(textureReference& texRef, int offset, size_t size);
void BindTexture2(textureReference& texRef1, textureReference& texRef2);
void BindTexture4(textureReference& texRef1, textureReference& texRef2,
textureReference& texRef3, textureReference& texRef4);
int BindTextureX(textureReference& texRef1, textureReference& texRef2,
textureReference& texRef3, textureReference& texRef4,
bool force4);
void SwapData(CuTexImage& src);
void CopyToHost(void* buf);
void CopyFromDevice(const void* buf);
void CopyFromHost(const void* buf);
void SaveToFile(const char* name);
void ReleaseData();
public:
inline float* data() { return GetRequiredSize() ? ((float*)_cuData) : NULL; }
inline bool IsValid() { return _cuData != NULL && GetDataSize() > 0; }
inline unsigned int GetLength() {
return _imgWidth * _imgHeight * _numChannel;
}
inline unsigned int GetImgWidth() { return _imgWidth; }
inline unsigned int GetImgHeight() { return _imgHeight; }
inline size_t GetReservedWidth() {
return _numBytes == 0
? 0
: (_numBytes / (_imgHeight * _numChannel * sizeof(float)));
}
inline size_t GetDataSize() { return _numBytes == 0 ? 0 : GetRequiredSize(); }
inline size_t GetRequiredSize() {
return sizeof(float) * _imgWidth * _imgHeight * _numChannel;
}
inline unsigned int IsHugeData() { return (GetLength() - 1) / (1 << 27); }
public:
CuTexImage();
virtual ~CuTexImage();
};
} // namespace pba
#endif // !defined(CU_TEX_IMAGE_H)
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