137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/*
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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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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdio.h>
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#ifdef HAVE_LCMS
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#include <lcms2.h>
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#endif
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#include <libweston/libweston.h>
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#include "cms-helper.h"
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#ifdef HAVE_LCMS
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static void
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weston_cms_gamma_clear(struct weston_output *o)
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{
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int i;
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uint16_t *red;
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if (!o->set_gamma)
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return;
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red = calloc(o->gamma_size, sizeof(uint16_t));
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for (i = 0; i < o->gamma_size; i++)
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red[i] = (uint32_t) 0xffff * (uint32_t) i / (uint32_t) (o->gamma_size - 1);
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o->set_gamma(o, o->gamma_size, red, red, red);
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free(red);
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}
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#endif
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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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{
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#ifdef HAVE_LCMS
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cmsFloat32Number in;
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const cmsToneCurve **vcgt;
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int i;
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int size;
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uint16_t *red = NULL;
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uint16_t *green = NULL;
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uint16_t *blue = NULL;
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if (!o->set_gamma)
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return;
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if (!p) {
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weston_cms_gamma_clear(o);
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return;
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}
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weston_log("Using ICC profile %s\n", p->filename);
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vcgt = cmsReadTag (p->lcms_handle, cmsSigVcgtTag);
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if (vcgt == NULL || vcgt[0] == NULL) {
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weston_cms_gamma_clear(o);
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return;
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}
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size = o->gamma_size;
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red = calloc(size, sizeof(uint16_t));
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green = calloc(size, sizeof(uint16_t));
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blue = calloc(size, sizeof(uint16_t));
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for (i = 0; i < size; i++) {
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in = (cmsFloat32Number) i / (cmsFloat32Number) (size - 1);
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red[i] = cmsEvalToneCurveFloat(vcgt[0], in) * (double) 0xffff;
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green[i] = cmsEvalToneCurveFloat(vcgt[1], in) * (double) 0xffff;
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blue[i] = cmsEvalToneCurveFloat(vcgt[2], in) * (double) 0xffff;
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}
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o->set_gamma(o, size, red, green, blue);
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free(red);
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free(green);
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free(blue);
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#endif
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}
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void
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weston_cms_destroy_profile(struct weston_color_profile *p)
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{
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if (!p)
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return;
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#ifdef HAVE_LCMS
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cmsCloseProfile(p->lcms_handle);
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#endif
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free(p->filename);
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free(p);
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}
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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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{
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struct weston_color_profile *p;
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p = zalloc(sizeof(struct weston_color_profile));
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p->filename = strdup(filename);
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p->lcms_handle = lcms_profile;
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return p;
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}
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struct weston_color_profile *
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weston_cms_load_profile(const char *filename)
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{
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struct weston_color_profile *p = NULL;
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#ifdef HAVE_LCMS
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cmsHPROFILE lcms_profile;
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lcms_profile = cmsOpenProfileFromFile(filename, "r");
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if (lcms_profile)
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p = weston_cms_create_profile(filename, lcms_profile);
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#endif
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return p;
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}
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