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- /* pnm.h - header file for libpnm portable anymap library
- */
-
- #ifndef _PNM_H_
- #define _PNM_H_
-
- #include "ppm.h"
- typedef pixel xel;
- typedef pixval xelval;
- #define PNM_MAXMAXVAL PPM_MAXMAXVAL
- #define PNM_GET1(x) PPM_GETB(x)
- #define PNM_ASSIGN1(x,v) PPM_ASSIGN(x,0,0,v)
- #define PNM_EQUAL(x,y) PPM_EQUAL(x,y)
- #define PNM_FORMAT_TYPE(f) PPM_FORMAT_TYPE(f)
-
- /* Declarations of routines. */
-
- void pnm_init ARGS(( int* argcP, char* argv[] ));
-
- #define pnm_allocarray( cols, rows ) ((xel**) pm_allocarray( cols, rows, sizeof(xel) ))
- #define pnm_allocrow( cols ) ((xel*) pm_allocrow( cols, sizeof(xel) ))
- #define pnm_freearray( xels, rows ) pm_freearray( (char**) xels, rows )
- #define pnm_freerow( xelrow ) pm_freerow( (char*) xelrow )
-
- xel** pnm_readpnm ARGS(( FILE* file, int* colsP, int* rowsP, xelval* maxvalP, int* formatP ));
- void pnm_readpnminit ARGS(( FILE* file, int* colsP, int* rowsP, xelval* maxvalP, int* formatP ));
- void pnm_readpnmrow ARGS(( FILE* file, xel* xelrow, int cols, xelval maxval, int format ));
-
- void pnm_writepnm ARGS(( FILE* file, xel** xels, int cols, int rows, xelval maxval, int format, int forceplain ));
- void pnm_writepnminit ARGS(( FILE* file, int cols, int rows, xelval maxval, int format, int forceplain ));
- void pnm_writepnmrow ARGS(( FILE* file, xel* xelrow, int cols, xelval maxval, int format, int forceplain ));
-
- xel pnm_backgroundxel ARGS(( xel** xels, int cols, int rows, xelval maxval, int format ));
- xel pnm_backgroundxelrow ARGS(( xel* xelrow, int cols, xelval maxval, int format ));
- xel pnm_whitexel ARGS(( xelval maxval, int format ));
- xel pnm_blackxel ARGS(( xelval maxval, int format ));
- void pnm_invertxel ARGS(( xel* x, xelval maxval, int format ));
- void pnm_promoteformat ARGS(( xel** xels, int cols, int rows, xelval maxval, int format, xelval newmaxval, int newformat ));
- void pnm_promoteformatrow ARGS(( xel* xelrow, int cols, xelval maxval, int format, xelval newmaxval, int newformat ));
-
- extern xelval pnm_pbmmaxval;
- /* This is the maxval used when a PNM program reads a PBM file. Normally
- ** it is 1; however, for some programs, a larger value gives better results
- */
-
- #endif /*_PNM_H_*/
-