/usr/include/mapnik/image_data.hpp is in libmapnik-dev 2.2.0+ds1-7+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef MAPNIK_IMAGE_DATA_HPP
#define MAPNIK_IMAGE_DATA_HPP
// mapnik
#include <mapnik/global.hpp>
// stl
#include <cassert>
#include <cstring>
namespace mapnik
{
template <class T> class ImageData
{
public:
typedef T pixel_type;
ImageData(unsigned width,unsigned height)
: width_(width),
height_(height),
pData_((width!=0 && height!=0)? static_cast<T*>(::operator new(sizeof(T)*width*height)):0)
{
if (pData_) std::memset(pData_,0,sizeof(T)*width_*height_);
}
ImageData(const ImageData<T>& rhs)
:width_(rhs.width_),
height_(rhs.height_),
pData_((rhs.width_!=0 && rhs.height_!=0)?
static_cast<T*>(::operator new(sizeof(T)*rhs.width_*rhs.height_)) :0)
{
if (pData_) std::memcpy(pData_,rhs.pData_,sizeof(T)*rhs.width_* rhs.height_);
}
inline T& operator() (unsigned i,unsigned j)
{
assert(i<width_ && j<height_);
return pData_[j*width_+i];
}
inline const T& operator() (unsigned i,unsigned j) const
{
assert(i<width_ && j<height_);
return pData_[j*width_+i];
}
inline unsigned width() const
{
return width_;
}
inline unsigned height() const
{
return height_;
}
inline void set(const T& t)
{
for (unsigned y = 0; y < height_; ++y)
{
T * row = getRow(y);
for (unsigned x = 0; x < width_; ++x)
{
row[x] = t;
}
}
}
inline const T* getData() const
{
return pData_;
}
inline T* getData()
{
return pData_;
}
inline const unsigned char* getBytes() const
{
return (unsigned char*)pData_;
}
inline unsigned char* getBytes()
{
return (unsigned char*)pData_;
}
inline const T* getRow(unsigned row) const
{
return pData_+row*width_;
}
inline T* getRow(unsigned row)
{
return pData_+row*width_;
}
inline void setRow(unsigned row,const T* buf,unsigned size)
{
assert(row<height_);
assert(size<=width_);
std::memcpy(pData_+row*width_,buf,size*sizeof(T));
}
inline void setRow(unsigned row,unsigned x0,unsigned x1,const T* buf)
{
std::memcpy(pData_+row*width_+x0,buf,(x1-x0)*sizeof(T));
}
inline ~ImageData()
{
::operator delete(pData_),pData_=0;
}
private:
const unsigned width_;
const unsigned height_;
T *pData_;
ImageData& operator=(const ImageData&);
};
typedef ImageData<unsigned> image_data_32;
typedef ImageData<byte> image_data_8;
}
#endif // MAPNIK_IMAGE_DATA_HPP
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