[FFmpeg-cvslog] avcodec/alsdec: fix some undefined shifts

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Mon Jul  3 11:48:13 2017 +0200| [cbbd330abc95d31ec3e67c6811333db015f54c01] | committer: Paul B Mahol

avcodec/alsdec: fix some undefined shifts

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cbbd330abc95d31ec3e67c6811333db015f54c01
---

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

diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c
index 960c55c653..13bd52f297 100644
--- a/libavcodec/alsdec.c
+++ b/libavcodec/alsdec.c
@@ -761,7 +761,7 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
             }
 
             for (k = 2; k < opt_order; k++)
-                quant_cof[k] = (quant_cof[k] << 14) + (add_base << 13);
+                quant_cof[k] = (quant_cof[k] * (1 << 14)) + (add_base << 13);
         }
     }
 
@@ -866,7 +866,7 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
                     res >>= 1;
 
                     if (cur_k) {
-                        res <<= cur_k;
+                        res  *= 1 << cur_k;
                         res  |= get_bits_long(gb, cur_k);
                     }
                 }