Add getter, setter for MaxSize

options.go

@@ -5,14 +5,34 @@ package bimg
 #include "vips/vips.h"
 */
 import "C"
+import "fmt"
 
 const (
 	// Quality defines the default JPEG quality to be used.
 	Quality = 75
-	// MaxSize defines the maximum pixels width or height supported.
-	MaxSize = 16383
+	// maxSize defines the maximum pixels width or height supported.
 )
 
+var maxSize = 16383
+
+// MaxSize returns maxSize.
+// maxSize defines maximum pixels width or height supported.
+func MaxSize() int {
+	return maxSize
+}
+
+// SetMaxSize sets maxSize.
+// maxSize defines maximum pixels width or height supported.
+func SetMaxsize(s int) error {
+	if s <= 0 {
+		return fmt.Errorf("invalid size.A size must be 0.")
+	}
+
+	maxSize = s
+
+	return nil
+}
+
 // Gravity represents the image gravity value.
 type Gravity int
 

vips.go

@@ -564,7 +564,7 @@ func vipsExtract(image *C.VipsImage, left, top, width, height int) (*C.VipsImage
 	var buf *C.VipsImage
 	defer C.g_object_unref(C.gpointer(image))
 
-	if width > MaxSize || height > MaxSize {
+	if width > MaxSize() || height > MaxSize() {
 		return nil, errors.New("Maximum image size exceeded")
 	}
 
@@ -581,7 +581,7 @@ func vipsSmartCrop(image *C.VipsImage, width, height int) (*C.VipsImage, error)
 	var buf *C.VipsImage
 	defer C.g_object_unref(C.gpointer(image))
 
-	if width > MaxSize || height > MaxSize {
+	if width > MaxSize() || height > MaxSize() {
 		return nil, errors.New("Maximum image size exceeded")
 	}