Optionally erase embedded thumbnail from EXIF

1 files changed, 25 insertions, 0 deletions

diff --git a/jpeg-utils.cpp b/jpeg-utils.cpp
index b550b21..316cbd7 100644
--- a/jpeg-utils.cpp
+++ b/jpeg-utils.cpp
@@ -389,3 +389,28 @@ calculate_sizes (const unsigned long max_width, const unsigned long max_height,
     }
 }
 
+
+/*
+ *   strip_thumbnail: strip thumbnail stored in EXIF table
+ */
+void
+strip_thumbnail (const char *filename)
+{
+  try
+  {
+     Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(filename);
+     g_assert (image.get() != 0);
+
+     image->readMetadata();
+     Exiv2::ExifData &exifData = image->exifData();
+     if (! exifData.empty())  {
+       exifData.eraseThumbnail();
+       image->writeMetadata();
+     }
+  }
+  catch (Exiv2::AnyError& e)
+  {
+    fprintf (stderr, "strip_thumbnail: Caught Exiv2 exception: '%s'\n", e.what());
+  }
+}
+