This makes it easier to re-generate the test diffs. The build system
will properly set DI_EDID_DECODE/DI_EDID_PRINT (and will rebuild
these tools if they are out-of-date).
Signed-off-by: Simon Ser <contact@emersion.fr>
The three character PNP ID is a key to manufacturer name database. It
may be desirable to report the manufacturer's real name than just PNP ID
which can be misleading, e.g. MSI refers to Microstep and not MSI GmbH.
This builds the PNP ID database into libdisplay-info to avoid having to
find and parse files at runtime.
tool/gen-search-table.py started as a copy of Wayland 1.21.0's
src/embed.py and took influence from
10945c4ed8/conv.py
However, our script parses the text file shipped in hwdata package in
Debian (and presumably other distributions) rather than the original
CSV.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
The Display Monitor Timing specification is a PDF with data tables.
A small Python script can be used to extract its contents in a
machine-readable form.
For now only extract a few fields. This can be extended later.
Signed-off-by: Simon Ser <contact@emersion.fr>
A simple version script is used because it allows us to consistently
expose all symbols starting with "di_", removing the risk to forget
to mark a symbol as public.
Signed-off-by: Simon Ser <contact@emersion.fr>
These warnings are easy to miss during development:
../edid.c: In function ‘_di_edid_parse’:
../edid.c:254:25: warning: implicit declaration of function ‘di_edid_destroy’? [-Wimplicit-function-declaration]
254 | di_edid_destroy(edid);
| ^~~~~~~~~~~~~~~
And when missed, the code still compiles. Which means one needs to clean-build
to show them again.
Signed-off-by: Simon Ser <contact@emersion.fr>
Add two small shell utilities to generate and compare diffs between
edid-decode and di-edid-decode. Store the diffs in-tree and add tests
to ensure they don't regress. Run the tests in CI with a pinned
installation of edid-decode.
One EDID blob is added to the test collection: dell-2408wfp-dp. It's
extracted [1] from the edid-decode repository.
[1]: https://git.linuxtv.org/edid-decode.git/tree/data/dell-2408wfp-dp
Signed-off-by: Simon Ser <contact@emersion.fr>
Closes: https://gitlab.freedesktop.org/emersion/libdisplay-info/-/issues/5
This utility displays low-level EDID information. It uses the same
format as the official edid-decode CLI tool from linuxtv.org. It
will be helpful for testing.
Signed-off-by: Simon Ser <contact@emersion.fr>
This exposes a new di_info opaque struct from which high-level
information will be able to be queried by the user. A new
di_info_parse_edid function creates a di_info from an EDID blob.
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>
This warns when implicit conversions may alter a value. It's easy
to miss implicit conversions from signed to unsigned, from real to
integer, or to smaller types. This warning forces such conversions
to be explicit.
Signed-off-by: Simon Ser <contact@emersion.fr>
Enable a few extra warning options, including -Walloca because it's
error-prone. Enable -Wdeclaration-after-statement to enforce the code
style. Disable -Wunused-parameter and -Wmissing-field-initializers
because these are pointless and don't catch bugs.
Inspired from the Weston and wlroots options.
Signed-off-by: Simon Ser <contact@emersion.fr>
