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/* pnm.h - header file for libpnm portable anymap library
*/
#ifndef _PNM_H_
#define _PNM_H_
#include <netpbm/pm.h>
#include <netpbm/pbm.h>
#include <netpbm/pgm.h>
#include <netpbm/ppm.h>
#ifdef __cplusplus
extern "C" {
#endif
#if 0
} /* to fake out automatic code indenters */
#endif
typedef pixel xel;
/* Xels come in three types: PBM, PGM, and PPM; the user of an Xel has to
know which as a matter of context (and like a pixel, the user also has
to interpret an xel in the context of a certain maxval). Though the
structure is identical to 'pixel', the values are the same only for PPM
xels. For a PGM xel, the 'r' and 'g' components of the 'xel' structure
are zero and the 'b' component is the gray level. For a PBM xel, the
'r' and 'g' components are zero and the 'b' component is 0 for black
or maxval for white.
*/
typedef pixval xelval;
#define PNM_OVERALLMAXVAL PPM_OVERALLMAXVAL
#define PNM_MAXMAXVAL PPM_MAXMAXVAL
#define pnm_unnormalize ppm_unnormalize
#define PNM_GET1(x) PPM_GETB(x)
#define PNM_GETR(x) PPM_GETR(x)
#define PNM_GETG(x) PPM_GETG(x)
#define PNM_GETB(x) PPM_GETB(x)
#define PNM_ASSIGN1(x,v) PPM_ASSIGN(x,0,0,v)
#define PNM_ASSIGN(x,r,g,b) PPM_ASSIGN(x,r,g,b)
#define PNM_EQUAL(x,y) PPM_EQUAL(x,y)
#define PNM_FORMAT_TYPE(f) PPM_FORMAT_TYPE(f)
#define PNM_DEPTH(newp,p,oldmaxval,newmaxval) \
PPM_DEPTH(newp,p,oldmaxval,newmaxval)
/* Declarations of routines. */
void
pnm_init(int * const argcP,
char ** const argv);
void
pnm_nextimage(FILE * const file, int * const eofP);
xel *
pnm_allocrow(unsigned int const cols);
#define pnm_freerow(xelrow) pm_freerow(xelrow)
#define pnm_allocarray( cols, rows ) \
((xel**) pm_allocarray( cols, rows, sizeof(xel) ))
#define pnm_freearray( xels, rows ) pm_freearray( (char**) xels, rows )
void
pnm_readpnminit(FILE * const fileP,
int * const colsP,
int * const rowsP,
xelval * const maxvalP,
int * const formatP);
void
pnm_readpnmrow(FILE * const fileP,
xel * const xelrow,
int const cols,
xelval const maxval,
int const format);
xel **
pnm_readpnm(FILE * const fileP,
int * const colsP,
int * const rowsP,
xelval * const maxvalP,
int * const formatP);
void
pnm_check(FILE * const fileP,
enum pm_check_type const check_type,
int const format,
int const cols,
int const rows,
int const maxval,
enum pm_check_code * const retvalP);
void
pnm_writepnminit(FILE * const fileP,
int const cols,
int const rows,
xelval const maxval,
int const format,
int const forceplain);
void
pnm_writepnmrow(FILE * const fileP,
const xel * const xelrow,
int const cols,
xelval const maxval,
int const format,
int const forceplain);
void
pnm_writepnm(FILE * const fileP,
xel ** const xels,
int const cols,
int const rows,
xelval const maxval,
int const format,
int const forceplain);
xel
pnm_backgroundxel(xel** xels, int cols, int rows, xelval maxval, int format);
xel
pnm_backgroundxelrow(xel* xelrow, int cols, xelval maxval, int format);
xel
pnm_whitexel(xelval maxval, int format);
xel
pnm_blackxel(xelval maxval, int format);
void
pnm_invertxel(xel * const x,
xelval const maxval,
int const format);
void
pnm_promoteformat(xel** xels, int cols, int rows, xelval maxval, int format,
xelval newmaxval, int newformat);
void
pnm_promoteformatrow(xel* xelrow, int cols, xelval maxval, int format,
xelval newmaxval, int newformat);
pixel
pnm_xeltopixel(xel const inputxel,
int const format);
xel
pnm_pixeltoxel(pixel const inputPixel);
xel
pnm_graytoxel(gray const inputGray);
xel
pnm_bittoxel(bit const inputBit,
xelval const maxval);
xel
pnm_parsecolorxel(const char * const colorName,
xelval const maxval,
int const format);
#ifdef __cplusplus
}
#endif
#endif /*_PNM_H_*/
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