[libav-commits] smacker audio: sign-extend the initial 16-bit predicted value

Franz Brauße git at libav.org
Fri Jan 4 08:09:20 CET 2013


Module: libav
Branch: release/0.7
Commit: fb3189ce8b8a5ddc44b460f9fb1b5b4e8ddea2f2

Author:    Franz Brauße <dev at karlchenofhell.org>
Committer: Reinhard Tartler <siretart at tauware.de>
Date:      Fri Mar 30 14:40:14 2012 -0400

smacker audio: sign-extend the initial 16-bit predicted value

Fixes Bug #265

Signed-off-by: Justin Ruggles <justin.ruggles at gmail.com>
(cherry picked from commit 12cbbbb4abda2de0ea123282ccf7ebee61517f7d)

Signed-off-by: Anton Khirnov <anton at khirnov.net>

---

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

diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c
index eb4427c..ff2cdeb 100644
--- a/libavcodec/smacker.c
+++ b/libavcodec/smacker.c
@@ -644,7 +644,7 @@ static int smka_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     }
     if(bits) { //decode 16-bit data
         for(i = stereo; i >= 0; i--)
-            pred[i] = av_bswap16(get_bits(&gb, 16));
+            pred[i] = sign_extend(av_bswap16(get_bits(&gb, 16)), 16);
         for(i = 0; i <= stereo; i++)
             *samples++ = pred[i];
         for(; i < unp_size / 2; i++) {



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