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cms-helper/static: Add "identity" builtin cms profile (v3)

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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>
This commit is contained in:
Mario Kleiner
2015-07-18 08:10:58 +02:00
committed by Bryce Harrington
parent 2611ebd316
commit 7e07db9207
1 changed files with 3 additions and 2 deletions
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src/cms-static.c
+3 -2
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@@ -56,11 +56,12 @@ cms_output_created(struct cms_static *cms, struct weston_output *o)
if (weston_config_section_get_string(s, "icc_profile", &profile, NULL) < 0) if (weston_config_section_get_string(s, "icc_profile", &profile, NULL) < 0)
return; return;
p = weston_cms_load_profile(profile); 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); weston_log("cms-static: failed to load %s\n", profile);
} else { } else {
weston_log("cms-static: loading %s for %s\n", 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); weston_cms_set_color_profile(o, p);
} }
} }