1 files changed, 95 insertions, 0 deletions
diff --git a/converter/other/sirtopnm.c b/converter/other/sirtopnm.c
new file mode 100644
index 00000000..fafcc913
--- /dev/null
+++ b/converter/other/sirtopnm.c
@@ -0,0 +1,95 @@
+/* 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 );
+}