cms-helper/static: Add "identity" builtin cms profile (v3)
Allows to force loading an identity gamma table if
option icc_profile= is given in weston.ini for
an output, ie., icc_profile= is specified to an
empty assignment.
Some special display output devices, e.g., for
neuro-science applications, and special display
testing hardware need a guaranteed perfect pixel
passthrough from framebuffer to output. This is
an easy way to set this up for cms-static.
v2: Remove confusing/redundant weston_log debug output.
v3: Don't use the "identity" keyword to trigger this, but
instead assignment of an empty string will trigger
loading of an identity LUT. Suggested by Derek Foreman.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/src/cms-static.c b/src/cms-static.c
index 7166f57..0273ee3 100644
--- a/src/cms-static.c
+++ b/src/cms-static.c
@@ -56,11 +56,12 @@
if (weston_config_section_get_string(s, "icc_profile", &profile, NULL) < 0)
return;
p = weston_cms_load_profile(profile);
- if (p == NULL) {
+ if (p == NULL && strlen(profile) > 0) {
weston_log("cms-static: failed to load %s\n", profile);
} else {
weston_log("cms-static: loading %s for %s\n",
- profile, o->name);
+ (p != NULL) ? profile : "identity LUT",
+ o->name);
weston_cms_set_color_profile(o, p);
}
}