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| author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2012-08-07 19:32:20 +0200 |
|---|---|---|
| committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2012-08-08 13:24:19 +0200 |
| commit | e78e6c37efc98189c4c3d89acd3265d7a7ba6d05 (patch) | |
| tree | c2fc21b7182765edbbdef4b30f219ddd40bfa428 | |
| parent | f86b2f36612debf10a07300acadba08f7b092bcb (diff) | |
| download | ffmpeg-e78e6c37efc98189c4c3d89acd3265d7a7ba6d05.tar.gz | |
g723_1: clip argument for 15-bit version of normalize_bits()
It expects maximum value to be 32767 but calculations in scale_vector()
which uses this function can give it ABS(-32768) which leads to wrong
result and thus clipping is needed.
| -rw-r--r-- | libavcodec/g723_1.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/g723_1.c b/libavcodec/g723_1.c index aabb03d447..e917f5a50c 100644 --- a/libavcodec/g723_1.c +++ b/libavcodec/g723_1.c @@ -290,6 +290,7 @@ static int scale_vector(int16_t *vector, int length) for (i = 0; i < length; i++) max = FFMAX(max, FFABS(vector[i])); + max = FFMIN(max, 0x7FFF); bits = normalize_bits(max, 15); scale = (bits == 15) ? 0x7FFF : (1 << bits); |