commit 2ad31ae31f47d788b0ee83a708654f26e2edfebb
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Fri Dec 15 08:54:42 2000 -0600
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Mon Apr 06 16:05:43 2009 -0500
tree b790ae17d6be5baf86356fec7c77a4c57609d4d8
parent f6b4f45c7e9ee5472594934c4d9dfba16157e7cb

Imported from libpng-1.0.9beta5.tar

pngwrite.c

diff --git a/pngwrite.c b/pngwrite.c
index 9f48b44..f1f1d3a 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.0.9beta4 - December 1, 2000
+ * libpng 1.0.9beta5 - December 15, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -773,6 +773,15 @@
    if (png_ptr->transformations)
       png_do_write_transformations(png_ptr);
 
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
+   if((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+      (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
+   {
+      /* Intrapixel differencing */
+      png_do_write_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
+   }
+#endif
+
    /* Find a filter if necessary, filter the row and write it out. */
    png_write_find_filter(png_ptr, &(png_ptr->row_info));