diff options
| author | Jai Menon <realityman@gmx.net> | 2008-12-05 07:58:31 +0000 |
|---|---|---|
| committer | Benoit Fouet <benoit.fouet@free.fr> | 2008-12-05 07:58:31 +0000 |
| commit | 3d5e1bfb20d3489d7bb2fa26196e02086e06f2b8 (patch) | |
| tree | d58d3999443554f5d7fc2c63bd78ac33bfdecd90 /libavcodec/alacenc.c | |
| parent | 6e74619e5e60e362f9d010acdbca143f5b079fc3 (diff) | |
| download | ffmpeg-3d5e1bfb20d3489d7bb2fa26196e02086e06f2b8.tar.gz | |
Fix an overflow in the predictor.
fixes issue 636
Patch by Jai.
Originally committed as revision 16007 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/alacenc.c')
| -rw-r--r-- | libavcodec/alacenc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/alacenc.c b/libavcodec/alacenc.c index df4136f4c4..9fd5064514 100644 --- a/libavcodec/alacenc.c +++ b/libavcodec/alacenc.c @@ -253,7 +253,8 @@ static void alac_linear_predictor(AlacEncodeContext *s, int ch) sum >>= lpc.lpc_quant; sum += samples[0]; - residual[i] = samples[lpc.lpc_order+1] - sum; + residual[i] = (samples[lpc.lpc_order+1] - sum) << (32 - s->write_sample_size) >> + (32 - s->write_sample_size); res_val = residual[i]; if(res_val) { |