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avfilter/vf_format: check that the format list is not empty

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Fixes Ticket3210

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-05 20:14:03 +01:00
parent b53d6ce3fd
commit ee16e0cacc
1 changed files with 3 additions and 0 deletions
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3
libavfilter/vf_format.c
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@ -55,6 +55,9 @@ static av_cold int init(AVFilterContext *ctx)
int pix_fmt_name_len, ret;
enum AVPixelFormat pix_fmt;
if (!s->pix_fmts)
return AVERROR(EINVAL);
/* parse the list of formats */
for (cur = s->pix_fmts; cur; cur = sep ? sep + 1 : NULL) {
if (!(sep = strchr(cur, '|')))