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libpnm2.c
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1996-11-18
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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 "pnm.h"
#include "ppm.h"
#include "libppm.h"
#include "pgm.h"
#include "libpgm.h"
#include "pbm.h"
#include "libpbm.h"
#if __STDC__
void
pnm_writepnminit( FILE* file, int cols, int rows, xelval maxval, int format, int forceplain )
#else /*__STDC__*/
void
pnm_writepnminit( file, cols, rows, maxval, format, forceplain )
FILE* file;
int cols, rows, format;
xelval maxval;
int forceplain;
#endif /*__STDC__*/
{
switch ( PNM_FORMAT_TYPE(format) )
{
case PPM_TYPE:
ppm_writeppminit( file, cols, rows, (pixval) maxval, forceplain );
break;
case PGM_TYPE:
pgm_writepgminit( file, cols, rows, (gray) maxval, forceplain );
break;
case PBM_TYPE:
pbm_writepbminit( file, cols, rows, forceplain );
break;
default:
pm_error( "can't happen" );
}
}
#if __STDC__
void
pnm_writepnmrow( FILE* file, xel* xelrow, int cols, xelval maxval, int format, int forceplain )
#else /*__STDC__*/
void
pnm_writepnmrow( file, xelrow, cols, maxval, format, forceplain )
FILE* file;
xel* xelrow;
int cols, format;
xelval maxval;
int forceplain;
#endif /*__STDC__*/
{
register int col;
register xel* xP;
gray* grayrow;
register gray* gP;
bit* bitrow;
register bit* bP;
switch ( PNM_FORMAT_TYPE(format) )
{
case PPM_TYPE:
ppm_writeppmrow( file, (pixel*) xelrow, cols, (pixval) maxval, forceplain );
break;
case PGM_TYPE:
grayrow = pgm_allocrow( cols );
for ( col = 0, gP = grayrow, xP = xelrow; col < cols; ++col, ++gP, ++xP )
*gP = PNM_GET1( *xP );
pgm_writepgmrow( file, grayrow, cols, (gray) maxval, forceplain );
pgm_freerow( grayrow );
break;
case PBM_TYPE:
bitrow = pbm_allocrow( cols );
for ( col = 0, bP = bitrow, xP = xelrow; col < cols; ++col, ++bP, ++xP )
*bP = PNM_GET1( *xP ) == 0 ? PBM_BLACK : PBM_WHITE;
pbm_writepbmrow( file, bitrow, cols, forceplain );
pbm_freerow( bitrow );
break;
default:
pm_error( "can't happen" );
}
}
#if __STDC__
void
pnm_writepnm( FILE* file, xel** xels, int cols, int rows, xelval maxval, int format, int forceplain )
#else /*__STDC__*/
void
pnm_writepnm( file, xels, cols, rows, maxval, format, forceplain )
FILE* file;
xel** xels;
xelval maxval;
int cols, rows, format;
int forceplain;
#endif /*__STDC__*/
{
int row;
pnm_writepnminit( file, cols, rows, maxval, format, forceplain );
for ( row = 0; row < rows; ++row )
pnm_writepnmrow( file, xels[row], cols, maxval, format, forceplain );
}