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Add validity checks for the unsharp filter.

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Prevent crash.

Originally committed as revision 25419 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-10-08 23:36:35 +00:00
parent fd0368e7ca
commit 74d127b537
1 changed files with 7 additions and 0 deletions
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7
libavfilter/vf_unsharp.c
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@ -133,6 +133,13 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
sscanf(args, "%d:%d:%lf:%d:%d:%lf", &lmsize_x, &lmsize_y, &lamount, sscanf(args, "%d:%d:%lf:%d:%d:%lf", &lmsize_x, &lmsize_y, &lamount,
&cmsize_x, &cmsize_y, &camount); &cmsize_x, &cmsize_y, &camount);
if (lmsize_x < 2 || lmsize_y < 2 || cmsize_x < 2 || cmsize_y < 2) {
av_log(ctx, AV_LOG_ERROR,
"Invalid value <2 for lmsize_x:%d or lmsize_y:%d or cmsize_x:%d or cmsize_y:%d\n",
lmsize_x, lmsize_y, cmsize_x, cmsize_y);
return AVERROR(EINVAL);
}
set_filter_param(&unsharp->luma, lmsize_x, lmsize_y, lamount); set_filter_param(&unsharp->luma, lmsize_x, lmsize_y, lamount);
set_filter_param(&unsharp->chroma, cmsize_x, cmsize_y, camount); set_filter_param(&unsharp->chroma, cmsize_x, cmsize_y, camount);