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lavc/options: don't copy priv context when it is not AVOption object

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This prevents potential crash when opt API is used without a class.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
This commit is contained in:
Lukasz Marek 2014-12-02 23:24:15 +01:00
parent 95f719fb8f
commit 53b2809f2c
1 changed files with 3 additions and 2 deletions
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5
libavcodec/options.c
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@ -195,11 +195,12 @@ int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
av_opt_copy(dest, src);
dest->priv_data = orig_priv_data;
dest->codec = orig_codec;
if (orig_priv_data)
if (orig_priv_data && src->codec && src->codec->priv_class &&
dest->codec && dest->codec->priv_class)
av_opt_copy(orig_priv_data, src->priv_data);
dest->codec = orig_codec;
/* set values specific to opened codecs back to their default state */
dest->slice_offset = NULL;