avcodec/alsdec: fix some undefined shifts

Signed-off-by: Paul B Mahol <onemda@gmail.com>
8 years ago · cbbd330abc
parent c3f10ea4bb
commit cbbd330abc
1 changed files with 2 additions and 2 deletions
--- 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);
                    }
                }