On Thu, 10 Jun 2021 12:55:08 +0200
"Diederick C. Niehorster" <dcni...@gmail.com> wrote:
> That macro doesn't work in C++. use:
>
> char a[AV_ERROR_MAX_STRING_SIZE] = { 0 };
> av_make_error_string(a, AV_ERROR_MAX_STRING_SIZE, errCode_);
>
> On Thu, Jun 10, 2021 at 12:40 PM ?????? <chai...@163.com> wrote:
> >
> > I use av_err2str function in c++, it occurs " error: taking
> > address of temporary array" when build.
> >
> >
> > I use extern "C" but it doesn't work.
my solution is override the default av_err2str() function in a
specified header file(needn't modify header in FFmpeg), like this:
#ifdef av_err2str
#undef av_err2str
#include <string>
av_always_inline std::string av_err2string(int errnum) {
char str[AV_ERROR_MAX_STRING_SIZE];
return av_make_error_string(str, AV_ERROR_MAX_STRING_SIZE, errnum);
}
#define av_err2str(err) av_err2string(err).c_str()
#endif // av_err2str
or refer here:
https://github.com/joncampbell123/composite-video-simulator/issues/5
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Regards,
Lingjiang Fang
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