Introduce av_clip_uint16().

Originally committed as revision 19636 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 11 insertions, 0 deletions

diff --git a/libavutil/common.h b/libavutil/common.h
index 47666ab20a..9fac1c0aa4 100644
--- a/libavutil/common.h
+++ b/libavutil/common.h
@@ -190,6 +190,17 @@ static inline av_const uint8_t av_clip_uint8(int a)
 }
 
 /**
+ * Clips a signed integer value into the 0-65535 range.
+ * @param a value to clip
+ * @return clipped value
+ */
+static inline av_const uint16_t av_clip_uint16(int a)
+{
+    if (a&(~65535)) return (-a)>>31;
+    else            return a;
+}
+
+/**
  * Clips a signed integer value into the -32768,32767 range.
  * @param a value to clip
  * @return clipped value