[FFmpeg-cvslog] sws: fix gray16_1

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Jul  3 00:33:23 2011 +0200| [d2c910b9a4ff6cd8bff0da1b6dd9098c70c01189] | committer: Michael Niedermayer

sws: fix gray16_1

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d2c910b9a4ff6cd8bff0da1b6dd9098c70c01189
---

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

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 471526f..d1cb371 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -578,8 +578,8 @@ yuv2gray16_1_c_template(SwsContext *c, const int32_t *buf0,
     int i;
 
     for (i = 0; i < (dstW >> 1); i++) {
-        int Y1 = buf0[i * 2    ] << 1;
-        int Y2 = buf0[i * 2 + 1] << 1;
+        int Y1 = (buf0[i * 2    ]+4)>>3;
+        int Y2 = (buf0[i * 2 + 1]+4)>>3;
 
         output_pixel(&dest[i * 2 + 0], Y1);
         output_pixel(&dest[i * 2 + 1], Y2);