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75 lines
2.9 KiB
75 lines
2.9 KiB
/*
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* Copyright © 2013 Richard Hughes
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _WESTON_CMS_H_
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#define _WESTON_CMS_H_
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#include "config.h"
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#include <libweston/libweston.h>
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/* General overview on how to be a CMS plugin:
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*
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* First, some nomenclature:
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*
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* CMF: Color management framework, i.e. "Use foo.icc for device $bar"
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* CMM: Color management module that converts pixel colors, which is
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* usually lcms2 on any modern OS.
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* CMS: Color management system that encompasses both a CMF and CMM.
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* ICC: International Color Consortium, the people that define the
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* binary encoding of a .icc file.
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* VCGT: Video Card Gamma Tag. An Apple extension to the ICC specification
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* that allows the calibration state to be stored in the ICC profile
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* Output: Physical port with a display attached, e.g. LVDS1
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*
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* As a CMF is probably something you don't want or need on an embedded install
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* these functions will not be called if the icc_profile key is set for a
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* specific [output] section in weston.ini
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*
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* Most desktop environments want the CMF to decide what profile to use in
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* different situations, so that displays can be profiled and also so that
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* the ICC profiles can be changed at runtime depending on the task or ambient
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* environment.
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*
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* The CMF can be selected using the 'modules' key in the [core] section.
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*/
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struct weston_color_profile {
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char *filename;
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void *lcms_handle;
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};
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void
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weston_cms_set_color_profile(struct weston_output *o,
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struct weston_color_profile *p);
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struct weston_color_profile *
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weston_cms_create_profile(const char *filename,
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void *lcms_profile);
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struct weston_color_profile *
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weston_cms_load_profile(const char *filename);
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void
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weston_cms_destroy_profile(struct weston_color_profile *p);
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#endif
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