[FFmpeg-devel] avcodec/psd : add support for gray float (WIP)

[Martin Vignali]

Hello,

Like gray float pix fmt is now added, add support for PSD gray float picture

Sample can be found here :
https://we.tl/t-QHDNyfMr1S

Can be test with :
./ffmpeg -i lena-gray_float.psd -pix_fmt gray8 res8.png

Doesn't work with :
./ffmpeg -i lena-gray_float.psd res16.png

I hoped to have something cleaner to support this, but without the use
of LE pix fmt, and bytestream_get_be32, i doesnt have the expected output

Maybe someone will have a better idea to support this.

Martin
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