[FFmpeg-cvslog] swscale/input: fix harmless integer overflow

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Mon Jun 16 22:46:46 2014 +0200| [293d5d7a8e12e38bf70b51f6aa70321e079ffa64] | committer: Michael Niedermayer

swscale/input: fix harmless integer overflow

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=293d5d7a8e12e38bf70b51f6aa70321e079ffa64
---

 libswscale/input.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libswscale/input.c b/libswscale/input.c
index 3a2a124..6a39a30 100644
--- a/libswscale/input.c
+++ b/libswscale/input.c
@@ -324,8 +324,8 @@ static av_always_inline void rgb16_32ToUV_half_c_template(int16_t *dstU,
     maskb |= maskb << 1;
     maskg |= maskg << 1;
     for (i = 0; i < width; i++) {
-        int px0 = input_pixel(2 * i + 0) >> shp;
-        int px1 = input_pixel(2 * i + 1) >> shp;
+        unsigned px0 = input_pixel(2 * i + 0) >> shp;
+        unsigned px1 = input_pixel(2 * i + 1) >> shp;
         int b, r, g = (px0 & maskgx) + (px1 & maskgx);
         int rb = px0 + px1 - g;