GraphicsMagick: HEIF: Retrieve image orientation from EXIF and s...

changeset 1145694abfc7 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=1145694abfc7
summary: HEIF: Retrieve image orientation from EXIF and store in image

diffstat:

 ChangeLog          |   5 +++++
 coders/heif.c      |  23 +++++++++++++++++++++++
 www/Changelog.html |   7 +++++++
 3 files changed, 35 insertions(+), 0 deletions(-)

diffs (69 lines):

diff -r dd2a83c5d201 -r 1145694abfc7 ChangeLog
--- a/ChangeLog	Sun Jun 18 16:21:01 2023 -0500
+++ b/ChangeLog	Sun Jun 18 16:53:36 2023 -0500
@@ -1,3 +1,8 @@
+2023-06-18  Bob Friesenhahn  <[email protected]>
+
+	* coders/heif.c (ReadMetadata): Retrieve image orientation from
+	EXIF and store in image.
+
 2023-06-18  Przemysław Sobala  <[email protected]>
 
 	* coders/png.c (ReadOnePNGImage): Retrieve image orientation from
diff -r dd2a83c5d201 -r 1145694abfc7 coders/heif.c
--- a/coders/heif.c	Sun Jun 18 16:21:01 2023 -0500
+++ b/coders/heif.c	Sun Jun 18 16:53:36 2023 -0500
@@ -21,6 +21,7 @@
 */
 
 #include "magick/studio.h"
+#include "magick/attribute.h"
 #include "magick/blob.h"
 #include "magick/colormap.h"
 #include "magick/log.h"
@@ -267,6 +268,28 @@
               p[5]='\0';
 
               SetImageProfile(image,"EXIF",profile,profile_size+exif_pad+4);
+
+              /*
+                Retrieve image orientation from EXIF and store in
+                image.
+              */
+              {
+                const ImageAttribute
+                  *attribute;
+
+                attribute = GetImageAttribute(image,"EXIF:Orientation");
+                if ((attribute != (const ImageAttribute *) NULL) &&
+                    (attribute->value != (char *) NULL))
+                  {
+                    int
+                      orientation;
+
+                    orientation=MagickAtoI(attribute->value);
+                    if ((orientation > UndefinedOrientation) &&
+                        (orientation <= LeftBottomOrientation))
+                      image->orientation=(OrientationType) orientation;
+                  }
+              }
             }
           else
             {
diff -r dd2a83c5d201 -r 1145694abfc7 www/Changelog.html
--- a/www/Changelog.html	Sun Jun 18 16:21:01 2023 -0500
+++ b/www/Changelog.html	Sun Jun 18 16:53:36 2023 -0500
@@ -37,6 +37,13 @@
 </div>
 
 <div class="document">
+<p>2023-06-18  Bob Friesenhahn  &lt;<a class="reference external" href="mailto:bfriesen&#37;&#52;&#48;simple&#46;dallas&#46;tx&#46;us">bfriesen<span>&#64;</span>simple<span>&#46;</span>dallas<span>&#46;</span>tx<span>&#46;</span>us</a>&gt;</p>
+<blockquote>
+<ul class="simple">
+<li><p>coders/heif.c (ReadMetadata): Retrieve image orientation from
+EXIF and store in image.</p></li>
+</ul>
+</blockquote>
 <p>2023-06-18  Przemysław Sobala  &lt;<a class="reference external" href="mailto:przemyslaw&#46;sobala&#37;&#52;&#48;gmail&#46;com">przemyslaw<span>&#46;</span>sobala<span>&#64;</span>gmail<span>&#46;</span>com</a>&gt;</p>
 <blockquote>
 <ul class="simple">
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