gst-plugins-good: videobox: avoid wrapping opaque to transparent

[Vincent Penquerc'h]

Module: gst-plugins-good
Branch: master
Commit: e967e27c36ade86dd4afe5b4f452b0e46a404184
URL:    http://cgit.freedesktop.org/gstreamer/gst-plugins-good/commit/?id=e967e27c36ade86dd4afe5b4f452b0e46a404184

Author: Vincent Penquerc'h <vincent.penquerch at collabora.co.uk>
Date:   Sat Jan 28 13:05:09 2012 +0000

videobox: avoid wrapping opaque to transparent

---

 gst/videobox/gstvideobox.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gst/videobox/gstvideobox.c b/gst/videobox/gstvideobox.c
index 9d31184..213aa9e 100644
--- a/gst/videobox/gstvideobox.c
+++ b/gst/videobox/gstvideobox.c
@@ -3274,8 +3274,8 @@ static void
 gst_video_box_process (GstVideoBox * video_box, const guint8 * src,
     guint8 * dest)
 {
-  guint b_alpha = CLAMP (video_box->border_alpha * 256, 0, 256);
-  guint i_alpha = CLAMP (video_box->alpha * 256, 0, 256);
+  guint b_alpha = CLAMP (video_box->border_alpha * 256, 0, 255);
+  guint i_alpha = CLAMP (video_box->alpha * 256, 0, 255);
   GstVideoBoxFill fill_type = video_box->fill_type;
   gint br, bl, bt, bb, crop_w, crop_h;