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132 lines
3.5 KiB
132 lines
3.5 KiB
/*
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* Copyright © 2013 Richard Hughes
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS 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 <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 "compositor.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 = calloc(1, 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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