[FFmpeg-cvslog] indeo3: Fix overreading requant_tab.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Mar  4 23:12:58 2012 +0100| [33a183df46355e4b281517e14c9b3c7e2b558dcf] | committer: Michael Niedermayer

indeo3: Fix overreading requant_tab.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=33a183df46355e4b281517e14c9b3c7e2b558dcf
---

 libavcodec/indeo3.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavcodec/indeo3.c b/libavcodec/indeo3.c
index 54389a1..a87252a 100644
--- a/libavcodec/indeo3.c
+++ b/libavcodec/indeo3.c
@@ -622,7 +622,7 @@ static int decode_cell(Indeo3DecodeContext *ctx, AVCodecContext *avctx,
     /* of the predicted cell in order to avoid overflows. */
     if (vq_index >= 8 && ref_block) {
         for (x = 0; x < cell->width << 2; x++)
-            ref_block[x] = requant_tab[vq_index & 7][ref_block[x]];
+            ref_block[x] = requant_tab[vq_index & 7][ref_block[x] & 127];
     }
 
     error = IV3_NOERR;