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PBM_PLUS
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pnm
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libpnm2.c
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C/C++ Source or Header
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1980-12-04
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/* libpnm2.c - pnm utility library part 2
**
** Copyright (C) 1989 by Jef Poskanzer.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation. This software is provided "as is" without express or
** implied warranty.
*/
#include <stdio.h>
#include "pnm.h"
#ifdef PPM
#include "ppm.h"
#include "libppm.h"
#endif PPM
#ifdef PGM
#include "pgm.h"
#include "libpgm.h"
static gray *grayrow;
#endif PGM
#ifdef PBM
#include "pbm.h"
#include "libpbm.h"
static bit *bitrow;
#endif PBM
void
pnm_writepnminit( file, cols, rows, maxval, format )
FILE *file;
int cols, rows, format;
xelval maxval;
{
switch ( format )
{
#ifdef PPM
case PPM_FORMAT:
case RPPM_FORMAT:
ppm_writeppminit( file, cols, rows, (pixval) maxval );
break;
#endif PPM
#ifdef PGM
case PGM_FORMAT:
case RPGM_FORMAT:
pgm_writepgminit( file, cols, rows, (gray) maxval );
grayrow = pgm_allocrow( cols );
break;
#endif PGM
#ifdef PBM
case PBM_FORMAT:
case RPBM_FORMAT:
pbm_writepbminit( file, cols, rows );
bitrow = pbm_allocrow( cols );
break;
#endif PBM
default:
pm_error( "can't happen", 0,0,0,0,0 );
}
}
void
pnm_writepnmrow( file, xelrow, cols, maxval, format )
FILE *file;
xel *xelrow;
xelval maxval;
int cols, format;
{
register int col;
register xel *xP;
#ifdef PGM
register gray *gP;
#endif PGM
#ifdef PBM
register bit *bP;
#endif PBM
switch ( format )
{
#ifdef PPM
case PPM_FORMAT:
case RPPM_FORMAT:
ppm_writeppmrow( file, (pixel *) xelrow, cols, (pixval) maxval );
break;
#endif PPM
#ifdef PGM
case PGM_FORMAT:
case RPGM_FORMAT:
for ( col = 0, gP = grayrow, xP = xelrow; col < cols; col++, gP++, xP++ )
*gP = PNM_GET1( *xP );
pgm_writepgmrow( file, grayrow, cols, (gray) maxval );
break;
#endif PGM
#ifdef PBM
case PBM_FORMAT:
case RPBM_FORMAT:
for ( col = 0, bP = bitrow, xP = xelrow; col < cols; col++, bP++, xP++ )
*bP = PNM_GET1( *xP );
pbm_writepbmrow( file, bitrow, cols );
break;
#endif PBM
default:
pm_error( "can't happen", 0,0,0,0,0 );
}
}
void
pnm_writepnm( file, xels, cols, rows, maxval, format )
FILE *file;
xel **xels;
xelval maxval;
int cols, rows, format;
{
int row;
pnm_writepnminit( file, cols, rows, maxval, format );
for ( row = 0; row < rows; row++ )
pnm_writepnmrow( file, xels[row], cols, maxval, format );
}