1 files changed, 25 insertions, 0 deletions
diff --git a/go/images/preprocess.go b/go/images/preprocess.go
new file mode 100644
index 000000000..b5907b1b8
--- /dev/null
+++ b/go/images/preprocess.go
@@ -0,0 +1,25 @@
+package images
+
+import (
+	"path/filepath"
+)
+
+/*
+* Preprocess image files on client side.
+* 1. possibly adjust the orientation
+* 2. resize the image to a width or height limit
+* 3. remove the exif data
+* Call this function on any file uploaded to weedfs
+* 
+*/
+func MaybePreprocessImage(filename string, data []byte, width, height int) (resized []byte) {
+	ext := filepath.Ext(filename)
+	switch ext {
+	case ".png", ".gif":
+		return Resized(ext, data, width, height)
+	case ".jpg", ".jpeg":
+	  data = FixJpgOrientation(data)
+		return Resized(ext, data, width, height)
+	}
+	return data
+}