/**
* libgamma — Display server abstraction layer for gamma ramp adjustments
* Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libgamma-method.h"
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
/**
* Initialise a gamma ramp in the proper way that allows all adjustment
* methods to read from and write to it without causing segmentation violation
*
* The input must have `red_size`, `green_size` and `blue_size` set to the
* sizes of the gamma ramps that should be allocated
*
* @param this The gamma ramps
* @return Zero on success, -1 on allocation error, `errno` will be set accordingly
*/
int libgamma_gamma_ramps_initialise(libgamma_gamma_ramps_t* restrict this)
{
size_t n = this->red_size + this->green_size + this->blue_size;
this->red = malloc(n * sizeof(uint16_t));
this->green = this-> red + this-> red_size;
this->blue = this->green + this->green_size;
return this->red ? 0 : -1;
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_ramps_initialise` or otherwise
* initialises in the proper manner
*
* @param this The gamma ramps
*/
void libgamma_gamma_ramps_destroy(libgamma_gamma_ramps_t* restrict this)
{
free(this->red);
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_ramps_initialise` or otherwise
* initialises in the proper manner, as well as release the pointer
* to the structure
*
* @param this The gamma ramps
*/
void libgamma_gamma_ramps_free(libgamma_gamma_ramps_t* restrict this)
{
free(this->red);
free(this);
}
/**
* Initialise a gamma ramp in the proper way that allows all adjustment
* methods to read from and write to it without causing segmentation violation
*
* The input must have `red_size`, `green_size` and `blue_size` set to the
* sizes of the gamma ramps that should be allocated
*
* @param this The gamma ramps
* @return Zero on success, -1 on allocation error, `errno` will be set accordingly
*/
int libgamma_gamma_ramps32_initialise(libgamma_gamma_ramps32_t* restrict this)
{
size_t n = this->red_size + this->green_size + this->blue_size;
this->red = malloc(n * sizeof(uint32_t));
this->green = this-> red + this-> red_size;
this->blue = this->green + this->green_size;
return this->red ? 0 : -1;
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_ramps32_initialise` or otherwise
* initialises in the proper manner
*
* @param this The gamma ramps
*/
void libgamma_gamma_ramps32_destroy(libgamma_gamma_ramps32_t* restrict this)
{
free(this->red);
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_ramps32_initialise` or otherwise
* initialises in the proper manner, as well as release the pointer
* to the structure
*
* @param this The gamma ramps
*/
void libgamma_gamma_ramps32_free(libgamma_gamma_ramps32_t* restrict this)
{
free(this->red);
free(this);
}
/**
* Initialise a gamma ramp in the proper way that allows all adjustment
* methods to read from and write to it without causing segmentation violation
*
* The input must have `red_size`, `green_size` and `blue_size` set to the
* sizes of the gamma ramps that should be allocated
*
* @param this The gamma ramps
* @return Zero on success, -1 on allocation error, `errno` will be set accordingly
*/
int libgamma_gamma_ramps64_initialise(libgamma_gamma_ramps64_t* restrict this)
{
size_t n = this->red_size + this->green_size + this->blue_size;
this->red = malloc(n * sizeof(uint64_t));
this->green = this-> red + this-> red_size;
this->blue = this->green + this->green_size;
return this->red ? 0 : -1;
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_ramps64_initialise` or otherwise
* initialises in the proper manner
*
* @param this The gamma ramps
*/
void libgamma_gamma_ramps64_destroy(libgamma_gamma_ramps64_t* restrict this)
{
free(this->red);
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_ramps64_initialise` or otherwise
* initialises in the proper manner, as well as release the pointer
* to the structure
*
* @param this The gamma ramps
*/
void libgamma_gamma_ramps64_free(libgamma_gamma_ramps64_t* restrict this)
{
free(this->red);
free(this);
}
/**
* Initialise a gamma ramp in the proper way that allows all adjustment
* methods to read from and write to it without causing segmentation violation
*
* The input must have `red_size`, `green_size` and `blue_size` set to the
* sizes of the gamma ramps that should be allocated
*
* @param this The gamma ramps
* @return Zero on success, -1 on allocation error, `errno` will be set accordingly
*/
int libgamma_gamma_rampsf_initialise(libgamma_gamma_rampsf_t* restrict this)
{
size_t n = this->red_size + this->green_size + this->blue_size;
this->red = malloc(n * sizeof(float));
this->green = this-> red + this-> red_size;
this->blue = this->green + this->green_size;
return this->red ? 0 : -1;
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_rampsf_initialise` or otherwise
* initialises in the proper manner
*
* @param this The gamma ramps
*/
void libgamma_gamma_rampsf_destroy(libgamma_gamma_rampsf_t* restrict this)
{
free(this->red);
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_rampsf_initialise` or otherwise
* initialises in the proper manner, as well as release the pointer
* to the structure
*
* @param this The gamma ramps
*/
void libgamma_gamma_rampsf_free(libgamma_gamma_rampsf_t* restrict this)
{
free(this->red);
free(this);
}
/**
* Initialise a gamma ramp in the proper way that allows all adjustment
* methods to read from and write to it without causing segmentation violation
*
* The input must have `red_size`, `green_size` and `blue_size` set to the
* sizes of the gamma ramps that should be allocated
*
* @param this The gamma ramps
* @return Zero on success, -1 on allocation error, `errno` will be set accordingly
*/
int libgamma_gamma_rampsd_initialise(libgamma_gamma_rampsd_t* restrict this)
{
size_t n = this->red_size + this->green_size + this->blue_size;
#ifdef HAVE_GAMMA_METHOD_LINUX_DRM
/* Valgrind complains about us reading uninitialize memory if we just use malloc. */
this->red = calloc(n, sizeof(double));
#else
this->red = malloc(n * sizeof(double));
#endif
this->green = this-> red + this-> red_size;
this->blue = this->green + this->green_size;
return this->red == NULL ? -1 : 0;
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_rampsd_initialise` or otherwise
* initialises in the proper manner
*
* @param this The gamma ramps
*/
void libgamma_gamma_rampsd_destroy(libgamma_gamma_rampsd_t* restrict this)
{
free(this->red);
}
/**
* Release resources that are held by a gamma ramp strcuture that
* has been allocated by `libgamma_gamma_rampsd_initialise` or otherwise
* initialises in the proper manner, as well as release the pointer
* to the structure
*
* @param this The gamma ramps
*/
void libgamma_gamma_rampsd_free(libgamma_gamma_rampsd_t* restrict this)
{
free(this->red);
free(this);
}
