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- // pnm_dec.cc: Reading PNM files
- // (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_dec, args, ,
- "pnm_dec (FILE)\n\
- \n\
- Decode PNM format file FILE.")
- {
- octave_value_list retval;
- retval (1) = -1.0;
- retval (0) = -1.0;
-
- UCHAR **cmap;
- INT **x;
- INT col_min, col_max;
- UINT i, j, nr, nc;
-
- int nargin = args.length ();
-
- if (nargin == 1)
- {
- if (!args(0).is_string ())
- {
- ::error ("pnm_dec: first argument must be a string");
- return retval;
- }
-
- string filename = args(0).string_value ();
-
- FILE *fp = fopen (filename.c_str (), "rb");
-
- if (fp)
- {
- if (PNM_Decode (fp, &nc, &nr, &col_min, &col_max, &cmap, &x) != 0)
- {
- fclose (fp);
- ::error ("pnm_dec: error reading PNM");
- return retval;
- }
-
- Matrix Map (col_max - col_min + 1, 3);
- oct_colormap (Map, cmap, col_min, col_max);
- retval (1) = Map;
-
- Matrix X (nr, nc);
- oct_pixels (X, x, col_min, nr, nc);
- retval (0) = X;
-
- fclose (fp);
- }
- else
- ::error ("pnm_dec: unable to open \"%s\"", filename.c_str ());
- }
- else
- print_usage ("pnm_dec");
-
- return retval;
- }
-