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avfilter/vf_unsharp: check if scalebits is too high

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Otherwise filter would happily give overflows and produce useless output.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2016-09-17 13:47:17 +02:00
parent 27714b462d
commit d790887d1c
1 changed files with 4 additions and 0 deletions
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4
libavfilter/vf_unsharp.c
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@ -141,6 +141,10 @@ static av_cold int init(AVFilterContext *ctx)
set_filter_param(&s->luma, s->lmsize_x, s->lmsize_y, s->lamount);
set_filter_param(&s->chroma, s->cmsize_x, s->cmsize_y, s->camount);
if (s->luma.scalebits >= 26 || s->chroma.scalebits >= 26) {
av_log(ctx, AV_LOG_ERROR, "luma or chroma matrix size too big\n");
return AVERROR(EINVAL);
}
s->apply_unsharp = apply_unsharp_c;
if (!CONFIG_OPENCL && s->opencl) {
av_log(ctx, AV_LOG_ERROR, "OpenCL support was not enabled in this build, cannot be selected\n");