From 0ce0d8d6e0c420ccafa79e0203b928c3559a4311 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 5 Mar 2021 00:43:38 +0100 Subject: Split source files, merge public header files, eliminite use gpp, rewrite makefile MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libgamma_gamma_ramps16_initialise.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 libgamma_gamma_ramps16_initialise.c (limited to 'libgamma_gamma_ramps16_initialise.c') diff --git a/libgamma_gamma_ramps16_initialise.c b/libgamma_gamma_ramps16_initialise.c new file mode 100644 index 0000000..c1c55cb --- /dev/null +++ b/libgamma_gamma_ramps16_initialise.c @@ -0,0 +1,28 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.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_ramps16_initialise(libgamma_gamma_ramps16_t *restrict this) +{ + size_t n = this->red_size + this->green_size + this->blue_size; +#ifdef HAVE_LIBGAMMA_METHOD_LINUX_DRM + /* Valgrind complains about us reading uninitialize memory if we just use malloc */ + this->red = calloc(n, sizeof(uint16_t)); +#else + this->red = malloc(n * sizeof(uint16_t)); +#endif + this->green = &this-> red[this-> red_size]; + this->blue = &this->green[this->green_size]; + return this->red ? 0 : -1; +} -- cgit v1.2.3-70-g09d2