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pnm_enc.cc
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C/C++ Source or Header
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1999-04-29
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2KB
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107 lines
// pnm_enc.cc: Writing a PNM file.
// (c) Klaus Gebhardt, 1997
#include <octave/config.h>
#include <iostream.h>
#include <octave/lo-utils.h>
#include <octave/lo-ieee.h>
#include <octave/mx-base.h>
#include <octave/str-vec.h>
#include <octave/defun-dld.h>
#include <octave/error.h>
#include <octave/gripes.h>
#include <octave/help.h>
//#include <octave/mappers.h>
#include <octave/oct-fstrm.h>
#include <octave/oct-iostrm.h>
#include <octave/oct-map.h>
#include <octave/oct-obj.h>
#include <octave/oct-prcstrm.h>
#include <octave/oct-stream.h>
#include <octave/oct-strstrm.h>
#include <octave/ops.h>
#include <octave/ov-base.h>
#include <octave/ov-typeinfo.h>
#include <octave/ov.h>
#include <octave/ov-base.h>
#include <octave/ov-re-mat.h>
#include <octave/pager.h>
#include <octave/pr-output.h>
#include <octave/symtab.h>
#include <octave/variables.h>
#include <octave/oct-img.h>
DEFUN_DLD (pnm_enc, args, ,
"pnm_enc (FILE, COLORMAP, IMG)\n\
\n\
Write the image in PNM format to the file FILE.")
{
double retval = -1.0;
UINT nr, nc;
INT colors;
UCHAR **cm;
INT **x;
INT grey;
int nargin = args.length ();
if ((nargin == 3) || (nargin == 4))
{
if (!args(0).is_string ())
{
::error ("pnm_enc: first argument must be a string");
return retval;
}
string filename = args(0).string_value ();
FILE *fp = fopen (filename.c_str (), "wb");
if (fp)
{
cm = gif_colormap (args(1), &colors, &grey);
if (!cm)
{
fclose (fp);
::error ("pnm_enc: error calculating colormap");
return retval;
}
x = gif_pixels (args(2), colors, &nr, &nc);
if (!x)
{
free (cm);
fclose (fp);
::error ("pnm_enc: error calculating pixels");
return retval;
}
if (PNM_Encode (fp, grey, nc, nr, x, colors, cm) != 0)
{
free (cm);
free (x);
fclose (fp);
::error ("pnm_enc: error writing bitmap");
return retval;
}
free (cm);
free (x);
fclose (fp);
retval = 0.0;
}
else
::error ("pnm_enc: unable to open \"%s\"", filename.c_str ());
}
else
print_usage ("pnm_enc");
return retval;
}