commit 5b5dcf8b88d2fa385d36ac0caac73e6ffa9e93e4
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Sat Jul 17 22:45:44 2004 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Mon Apr 06 16:07:38 2009 -0500
tree 4857e88604592e70aac59c20c5fa620f73343c92
parent 761bf9f06f3c544e6fb6ed46f3b08a363cf19b81

Imported from libpng-1.2.6beta3.tar

pngwtran.c

diff --git a/pngwtran.c b/pngwtran.c
index f118181..b091d87 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,9 +1,9 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.2.6beta2 - November 1, 2002
+ * libpng version 1.2.6beta3 - July 18, 2004
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2002 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2004 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
@@ -546,15 +546,15 @@
 
          for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
          {
-            png_uint_32 s0=*(rp  )<<8 | *(rp+1);
-            png_uint_32 s1=*(rp+2)<<8 | *(rp+3);
-            png_uint_32 s2=*(rp+4)<<8 | *(rp+5);
-            png_uint_32 red=(s0-s1)&0xffff;
-            png_uint_32 blue=(s2-s1)&0xffff;
-            *(rp  ) = (png_byte)((red>>8)&0xff);
-            *(rp+1) = (png_byte)(red&0xff);
-            *(rp+4) = (png_byte)((blue>>8)&0xff);
-            *(rp+5) = (png_byte)(blue&0xff);
+            png_uint_32 s0   = (*(rp  ) << 8) | *(rp+1);
+            png_uint_32 s1   = (*(rp+2) << 8) | *(rp+3);
+            png_uint_32 s2   = (*(rp+4) << 8) | *(rp+5);
+            png_uint_32 red  = (png_uint_32)((s0-s1) & 0xffffL);
+            png_uint_32 blue = (png_uint_32)((s2-s1) & 0xffffL);
+            *(rp  ) = (png_byte)((red >> 8) & 0xff);
+            *(rp+1) = (png_byte)(red & 0xff);
+            *(rp+4) = (png_byte)((blue >> 8) & 0xff);
+            *(rp+5) = (png_byte)(blue & 0xff);
          }
       }
    }