/** * 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 . */ #ifndef LIBGAMMA_GAMMA_X_VIDMODE_H #define LIBGAMMA_GAMMA_X_VIDMODE_H #ifndef HAVE_GAMMA_METHOD_X_VIDMODE # error Including gamma-x-vidmode.h without HAVE_GAMMA_METHOD_X_VIDMODE #endif #include "libgamma-method.h" /** * Return the capabilities of the adjustment method * * @param this The data structure to fill with the method's capabilities */ void libgamma_x_vidmode_method_capabilities(libgamma_method_capabilities_t* restrict this); /** * Initialise an allocated site state * * @param this The site state to initialise * @param site The site identifier, unless it is `NULL` it must a * `free`:able. One the state is destroyed the library * will attempt to free it. There you should not free * it yourself, and it must not be a string constant * or allocate on the stack. Note however that it will * not be free:d if this function fails. * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_site_initialise(libgamma_site_state_t* restrict this, char* restrict site); /** * Release all resources held by a site state * * @param this The site state */ void libgamma_x_vidmode_site_destroy(libgamma_site_state_t* restrict this); /** * Restore the gamma ramps all CRTCS with a site to the system settings * * @param this The site state * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_site_restore(libgamma_site_state_t* restrict this); /** * Initialise an allocated partition state * * @param this The partition state to initialise * @param site The site state for the site that the partition belongs to * @param partition The the index of the partition within the site * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_partition_initialise(libgamma_partition_state_t* restrict this, libgamma_site_state_t* restrict site, size_t partition); /** * Release all resources held by a partition state * * @param this The partition state */ void libgamma_x_vidmode_partition_destroy(libgamma_partition_state_t* restrict this); /** * Release all resources held by a partition state * and free the partition state pointer * * @param this The partition state */ void libgamma_x_vidmode_partition_free(libgamma_partition_state_t* restrict this); /** * Restore the gamma ramps all CRTCS with a partition to the system settings * * @param this The partition state * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_partition_restore(libgamma_partition_state_t* restrict this); /** * Initialise an allocated CRTC state * * @param this The CRTC state to initialise * @param partition The partition state for the partition that the CRTC belongs to * @param crtc The the index of the CRTC within the site * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_initialise(libgamma_crtc_state_t* restrict this, libgamma_partition_state_t* restrict partition, size_t crtc); /** * Release all resources held by a CRTC state * * @param this The CRTC state */ void libgamma_x_vidmode_crtc_destroy(libgamma_crtc_state_t* restrict this); /** * Release all resources held by a CRTC state * and free the CRTC state pointer * * @param this The CRTC state */ void libgamma_x_vidmode_crtc_free(libgamma_crtc_state_t* restrict this); /** * Restore the gamma ramps for a CRTC to the system settings for that CRTC * * @param this The CRTC state * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_restore(libgamma_crtc_state_t* restrict this); /** * Read information about a CRTC * * @param this Instance of a data structure to fill with the information about the CRTC * @param crtc The state of the CRTC whose information should be read * @param fields OR:ed identifiers for the information about the CRTC that should be read * @return Zero on success, -1 on error. On error refer to the error reports in `this`. */ int libgamma_x_vidmode_get_crtc_information(libgamma_crtc_information_t* restrict this, libgamma_crtc_state_t* restrict crtc, int32_t fields); /** * Get current the gamma ramps for a CRTC, 16-bit gamma-depth version * * @param this The CRTC state * @param ramps The gamma ramps to fill with the current values * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps_t* restrict ramps); /** * Set the gamma ramps for a CRTC, 16-bit gamma-depth version * * @param this The CRTC state * @param ramps The gamma ramps to apply * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps_t ramps); /** * Get current the gamma ramps for a CRTC, 32-bit gamma-depth version * * @param this The CRTC state * @param ramps The gamma ramps to fill with the current values * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_get_gamma_ramps32(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps32_t* restrict ramps); /** * Set the gamma ramps for a CRTC, 32-bit gamma-depth version * * @param this The CRTC state * @param ramps The gamma ramps to apply * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_set_gamma_ramps32(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps32_t ramps); /** * Get current the gamma ramps for a CRTC, 64-bit gamma-depth version * * @param this The CRTC state * @param ramps The gamma ramps to fill with the current values * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_get_gamma_ramps64(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps64_t* restrict ramps); /** * Set the gamma ramps for a CRTC, 64-bit gamma-depth version * * @param this The CRTC state * @param ramps The gamma ramps to apply * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_set_gamma_ramps64(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps64_t ramps); /** * Get current the gamma ramps for a CRTC, `float` version * * @param this The CRTC state * @param ramps The gamma ramps to fill with the current values * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_get_gamma_rampsf(libgamma_crtc_state_t* restrict this, libgamma_gamma_rampsf_t* restrict ramps); /** * Set the gamma ramps for a CRTC, `float` version * * @param this The CRTC state * @param ramps The gamma ramps to apply * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_set_gamma_rampsf(libgamma_crtc_state_t* restrict this, libgamma_gamma_rampsf_t ramps); /** * Get current the gamma ramps for a CRTC, `double` version * * @param this The CRTC state * @param ramps The gamma ramps to fill with the current values * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_get_gamma_rampsd(libgamma_crtc_state_t* restrict this, libgamma_gamma_rampsd_t* restrict ramps); /** * Set the gamma ramps for a CRTC, `double` version * * @param this The CRTC state * @param ramps The gamma ramps to apply * @return Zero on success, otherwise (negative) the value of an * error identifier provided by this library */ int libgamma_x_vidmode_crtc_set_gamma_rampsd(libgamma_crtc_state_t* restrict this, libgamma_gamma_rampsd_t ramps); #endif