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Diffstat (limited to 'src/libgamma-method.c')
| -rw-r--r-- | src/libgamma-method.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/src/libgamma-method.c b/src/libgamma-method.c new file mode 100644 index 0000000..164d0b4 --- /dev/null +++ b/src/libgamma-method.c @@ -0,0 +1,269 @@ +/** + * 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; + this->red = malloc(n * sizeof(double)); + 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_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); +} + |