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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-10-27 14:34:45 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-11-06 19:49:12 +0100 |
| commit | d39cc3c092936896d787c29d7e215a273e22a57e (patch) | |
| tree | fccba119e3c6c048f6df51dc5d7429efd09cad32 | |
| parent | e124c3c298a7abe2ded2b90817915c5baf8ea1be (diff) | |
| download | ffmpeg-d39cc3c092936896d787c29d7e215a273e22a57e.tar.gz | |
resample2: fix potential overflow
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit a39b5e8b323785695fb0e3c0f30bd9e24287db87)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/resample2.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/libavcodec/resample2.c b/libavcodec/resample2.c index 01478190a3..19fed30a38 100644 --- a/libavcodec/resample2.c +++ b/libavcodec/resample2.c @@ -227,10 +227,9 @@ int av_resample(AVResampleContext *c, short *dst, short *src, int *consumed, int dst[dst_index] = src[index2>>32]; index2 += incr; } - frac += dst_index * dst_incr_frac; index += dst_index * dst_incr; - index += frac / c->src_incr; - frac %= c->src_incr; + index += (frac + dst_index * (int64_t)dst_incr_frac) / c->src_incr; + frac = (frac + dst_index * (int64_t)dst_incr_frac) % c->src_incr; }else{ for(dst_index=0; dst_index < dst_size; dst_index++){ FELEM *filter= c->filter_bank + c->filter_length*(index & c->phase_mask); |