From 1e92d4580e1aeda64804e9c614ed13038d2b65d5 Mon Sep 17 00:00:00 2001
From: Hailin Jin <hljin@adobe.com>
Date: Thu, 23 Aug 2007 19:26:55 +0000
Subject: [PATCH] GIL: a further fix on the PNG IO 16-bit bug

[SVN r38868]
---
 include/boost/gil/extension/io/png_io_private.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/boost/gil/extension/io/png_io_private.hpp b/include/boost/gil/extension/io/png_io_private.hpp
index 8034784f1..2840f1c33 100644
--- a/include/boost/gil/extension/io/png_io_private.hpp
+++ b/include/boost/gil/extension/io/png_io_private.hpp
@@ -339,7 +339,9 @@ public:
                      PNG_INTERLACE_NONE,
                      PNG_COMPRESSION_TYPE_DEFAULT,PNG_FILTER_TYPE_DEFAULT);
         png_write_info(_png_ptr,_info_ptr);
-        if (little_endian() && png_get_bit_depth(_png_ptr,_info_ptr)>8)
+        if (little_endian() &&
+            png_write_support_private<typename channel_type<View>::type,
+                                      typename color_space_type<View>::type>::bit_depth>8)
             png_set_swap(_png_ptr);
         std::vector<pixel<typename channel_type<View>::type,
                           layout<typename color_space_type<View>::type> > > row(view.width());