The spec defines an upper bound for the extension block count,
which means we don't need to dynamically allocate the array. This
simplifies our logic a bit by removing an allocation error codepath.
The array is NULL-terminated, so EDID_MAX_BLOCK_COUNT is suitable
since it's the max number of extension blocks including the base
block, and the array doesn't include the base block.
Signed-off-by: Simon Ser <contact@emersion.fr>
Introduce an opaque struct di_edid to host EDID structures. Add
a function to create a di_edid (with basic size, header and
checksum validation). Add functions to fetch the EDID version and
revision.
This doesn't do much, but hopefully can be used as a fundation.
Signed-off-by: Simon Ser <contact@emersion.fr>
