Le mardi 19 mars 2019 à 15:52 +0100, Boris Brezillon a écrit :
> +/**
> + * struct v4l2_plane_ext_pix_format - additional, per-plane format definition
> + * @modifier:          modifier applied to the format (used for tiled formats
> + *                     and other kind of HW-specific formats, like compressed
> + *                     formats)

I have never seen HW that would allow per-plane modifiers on the DRM
side, and I believe the newer API (enumeration) ignores this per-plane
idea. Would be nice to investigate/verify this and avoid doing the same
mistake.

> + * @sizeimage:         maximum size in bytes required for data, for which
> + *                     this plane will be used
> + * @bytesperline:      distance in bytes between the leftmost pixels in two
> + *                     adjacent lines
> + */
> +struct v4l2_plane_ext_pix_format {
> +       __u64 modifier;
> +       __u32 sizeimage;
> +       __u32 bytesperline;
> +};