From 0d767725a26a52a3c8362cbb1b88cbe0fd52522d Mon Sep 17 00:00:00 2001
From: glennrp <glennrp@git.imagemagick.org>
Date: Fri, 17 Jan 2014 16:08:31 +0000
Subject: [PATCH] Added "-define png:swap-bytes" option.
---
coders/png.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/coders/png.c b/coders/png.c
index a00e4a322..e27f0a706 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -2461,6 +2461,25 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
ping_file_depth = ping_bit_depth;
+ /* Swap bytes if requested */
+ if (ping_file_depth == 16)
+ {
+ const char
+ *property;
+
+ ResetImagePropertyIterator(image);
+
+ while (property != (const char *) NULL)
+ {
+ GetImageProperty(image,property,exception);
+
+ if (LocaleNCompare(property,"png:swap-bytes",14) != 0)
+ png_set_swap(ping);
+
+ property=GetNextImageProperty(image);
+ }
+ }
+
/* Save bit-depth and color-type in case we later want to write a PNG00 */
{
char
--
2.40.0