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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-10-01 00:27:28 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-10-01 00:27:28 +0200 |
| commit | 2e2a2d8801b045b3dd58a4e49e8e040b559bc84a (patch) | |
| tree | e223bfd909aea93e7c1f8168c6df123e26ccb1a8 | |
| parent | 01e3340fb6022465ab23cf4a67a89c869b64476e (diff) | |
| download | ffmpeg-2e2a2d8801b045b3dd58a4e49e8e040b559bc84a.tar.gz | |
swscale/utils: dont divide by zero with zero vectors
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libswscale/utils.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c index 05ab0c6f86..a2e3ce1723 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -622,6 +622,10 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, sum += filter[i * filterSize + j]; } sum = (sum + one / 2) / one; + if (!sum) { + av_log(NULL, AV_LOG_WARNING, "SwScaler: zero vector in scaling\n"); + sum = 1; + } for (j = 0; j < *outFilterSize; j++) { int64_t v = filter[i * filterSize + j] + error; int intV = ROUNDED_DIV(v, sum); |