TASPngWriter.cxx

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#include "TASPngWriter.h"
 
#include <afterrootpngwrite.h>
 
#include <cerrno>
 
/** \class TASPngWriter
\ingroup asimage
 
C++ wrapper over simple writer of PNG files for standard GL memory formats:
LUMINANCE, LUMINANCE_ALPHA, RGB, and RGBA.
*/
 
int TASPngWriter::write_png_file(std::string_view filename)
{
   if ((int)row_pointers.size() != height)
      return 1;
 
   FILE *fp = fopen(filename.data(), "wb");
   if (!fp)
      return errno;
 
   int ret = after_root_png_write(fp, width, height, color_type, bit_depth, row_pointers.data());
   if (ret)
      return ret;
 
   fclose(fp);
 
   return 0;
}