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/* sirtopnm.c - read a Solitaire Image Recorder file and write a portable anymap
**
** Copyright (C) 1991 by Marvin Landis.
**
** 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"
int main( argc, argv )
int argc;
char* argv[];
{
FILE *ifp;
xel *xelrow, *xP;
unsigned char *sirarray;
int rows, cols, row, format, picsize, planesize;
register int col, i;
short info;
pnm_init( &argc, argv );
if ( argc > 2 )
pm_usage( "[sirfile]" );
if ( argc == 2 )
ifp = pm_openr( argv[1] );
else
ifp = stdin;
pm_readlittleshort( ifp, &info );
if ( info != 0x3a4f)
pm_error( "Input file is not a Solitaire file" );
pm_readlittleshort( ifp, &info );
pm_readlittleshort( ifp, &info );
if ( info == 17 )
{
format = PGM_TYPE;
}
else if ( info == 11 )
{
format = PPM_TYPE;
}
else
pm_error( "Input is not MGI TYPE 11 or MGI TYPE 17" );
pm_readlittleshort( ifp, &info );
cols = (int) ( info );
pm_readlittleshort( ifp, &info );
rows = (int) ( info );
for ( i = 1; i < 1531; i++ )
pm_readlittleshort( ifp, &info );
pnm_writepnminit( stdout, cols, rows, 255, format, 0 );
xelrow = pnm_allocrow( cols );
switch ( PNM_FORMAT_TYPE(format) )
{
case PGM_TYPE:
pm_message( "Writing a PGM file" );
for ( row = 0; row < rows; ++row )
{
for ( col = 0, xP = xelrow; col < cols; col++, xP++ )
PNM_ASSIGN1( *xP, fgetc( ifp ) );
pnm_writepnmrow( stdout, xelrow, cols, 255, format, 0 );
}
break;
case PPM_TYPE:
picsize = cols * rows * 3;
planesize = cols * rows;
if ( !( sirarray = (unsigned char*) malloc( picsize ) ) )
pm_error( "Not enough memory to load SIR file" );
if ( fread( sirarray, 1, picsize, ifp ) != picsize )
pm_error( "Error reading SIR file" );
pm_message( "Writing a PPM file" );
for ( row = 0; row < rows; row++ )
{
for ( col = 0, xP = xelrow; col < cols; col++, xP++ )
PPM_ASSIGN( *xP, sirarray[row*cols+col],
sirarray[planesize + (row*cols+col)],
sirarray[2*planesize + (row*cols+col)] );
pnm_writepnmrow( stdout, xelrow, cols, 255, format, 0 );
}
break;
default:
pm_error( "Shouldn't happen" );
}
pm_close( ifp );
exit( 0 );
}
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