2019-04-18 11:34 GMT+02:00, Simone Donadini :
> Thank you for the explanation Carl.
>
> Actually i can not deduce from your answer if the first method is correct,
See the GPL for an answer;-)
> but i will definitely not use the macro one.
Good idea.
Please avoid top-posting here, Carl Eugen
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Thank you for the explanation Carl.Actually i can not deduce from your answer if the first method is correct, but i will definitely not use the macro one. Bye,Simone.From: "Carl Eugen Hoyos" Date: 17/04/2019 at 23:30:48To: "This list is about using libavcodec, libavformat, libavutil, libavdevice an
2019-04-17 11:37 GMT+02:00, Simone Donadini :
> When opening a media i need to check if the pixel format holds an alpha
> channel.
> I can check for the alpha flag in the pixel format description, like this:
> const AVPixFmtDescriptor *pixDesc = av_pix_fmt_desc_get(pix_format);
> bool has_alpha =
Hi,When opening a media i need to check if the pixel format holds an alpha channel.I can check for the alpha flag in the pixel format description, like this:const AVPixFmtDescriptor *pixDesc = av_pix_fmt_desc_get(pix_format);bool has_alpha = pixDesc->flags & AV_PIX_FMT_FLAG_ALPHA;But i noticed that
