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WritePgm.h

Go to the documentation of this file.

#ifndef Impala_Core_Array_WritePgm_h
#define Impala_Core_Array_WritePgm_h

#include <vector>
#include "Core/Array/Element/TypeString.h"
#include "Basis/NativeTypeFormats.h"

namespace Impala
{
namespace Core
{
namespace Array
{


// Handles images only if pixels represent grey value [0-255]
// (in case of vector images only the first channel is written)
template<class ArrayT>
inline void
WritePgm(ArrayT* src, std::string fileName)
{
    typedef typename ArrayT::StorType StorT;

    int width = src->CW();
    int height = src->CH();
    int elemSize = ArrayT::ElemSize();
    FILE* fp = fopen(fileName.c_str(), "wb");
    fprintf(fp, "P5\n%d %d\n255\n", width, height);
    std::string fs = NativeTypeFormat<StorT>(0) + std::string(" ");
    for (int i=0 ; i<height ; i++)
    {
        StorT* srcPtr = src->CPB(0, i);
        for(int j=0 ; j<width ; j++)
        {
            fputc(*srcPtr, fp);
            for (int k=0 ; k<elemSize ; k++)
                srcPtr++;
        }
    }
    fclose(fp);
}

} // namespace Array
} // namespace Core
} // namespace Impala

#endif

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