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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 );
- }
-