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| -rw-r--r-- | src/libgamma-method.hh | 468 |
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diff --git a/src/libgamma-method.hh b/src/libgamma-method.hh new file mode 100644 index 0000000..514ae31 --- /dev/null +++ b/src/libgamma-method.hh @@ -0,0 +1,468 @@ +/** + * libgammamm -- C++ wrapper for libgamma + * Copyright (C) 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/>. + */ +#ifndef LIBGAMMA_METHOD_HH +#define LIBGAMMA_METHOD_HH + + +#include <string> + +#include "libgamma-native.hh" + + +namespace libgamma +{ + /** + * Cathode ray tube controller information data structure. + */ + class CRTCInformation; + + /** + * Capabilities of adjustment methods. + */ + class MethodCapabilities; + + + + /** + * Capabilities of adjustment methods. + */ + class MethodCapabilities + { + public: + /** + * Constructor. + */ + MethodCapabilities(); + + /** + * Constructor. + * + * @param caps The information in the native structure + */ + MethodCapabilities(libgamma_method_capabilities_t* caps); + + /** + * Copy constructor. + * + * @param other The information to copy. + */ + MethodCapabilities(const MethodCapabilities& other); + + /** + * Destructor. + */ + ~MethodCapabilities(); + + /** + * Copy operator. + * + * @param other The information to copy. + */ + MethodCapabilities& operator =(const MethodCapabilities& other); + + + + + /** + * OR of the CRTC information fields in `libgamma_crtc_information_t` + * that may (but can fail) be read successfully. + */ + int32_t crtc_information; + + /** + * Whether the default site is known, if true the site is integrated + * to the system or can be determined using environment variables. + */ + bool default_site_known; + + /** + * Whether the adjustment method supports multiple sites rather + * than just the default site. + */ + bool multiple_sites; + + /** + * Whether the adjustment method supports multiple partitions + * per site. + */ + bool multiple_partitions; + + /** + * Whether the adjustment method supports multiple CRTC:s + * per partition per site. + */ + bool multiple_crtcs; + + /** + * Whether the partition to graphics card is a bijection. + */ + bool partitions_are_graphics_cards; + + /** + * Whether the adjustment method supports `libgamma_site_restore`. + */ + bool site_restore; + + /** + * Whether the adjustment method supports `libgamma_partition_restore`. + */ + bool partition_restore; + + /** + * Whether the adjustment method supports `libgamma_crtc_restore`. + */ + bool crtc_restore; + + /** + * Whether the `red_gamma_size`, `green_gamma_size` and `blue_gamma_size` + * fields in `libgamma_crtc_information_t` will always have the same + * values as each other for the adjustment method. + */ + bool identical_gamma_sizes; + + /** + * Whether the `red_gamma_size`, `green_gamma_size` and `blue_gamma_size` + * fields in `libgamma_crtc_information_t` will always be filled with the + * same value for the adjustment method. + */ + bool fixed_gamma_size; + + /** + * Whether the `gamma_depth` field in `libgamma_crtc_information_t` + * will always be filled with the same value for the adjustment method. + */ + bool fixed_gamma_depth; + + /** + * Whether the adjustment method will actually perform adjustments. + */ + bool real; + + /** + * Whether the adjustment method is implement using a translation layer. + */ + bool fake; + + }; + + + /** + * Types for connectors. + */ + typedef libgamma_connector_type_t ConnectorType; + + /** + * Orders for subpixels. Currently the possible values are + * very biased to LCD, Plasma and monochrome monitors. + */ + typedef libgamma_subpixel_order_t SubpixelOrder; + + + /** + * Cathode ray tube controller information data structure. + */ + class CRTCInformation + { + public: + /** + * Constructor. + */ + CRTCInformation(); + + /** + * Constructor. + * + * @param info The information in the native structure + */ + CRTCInformation(libgamma_crtc_information_t* info); + + /** + * Copy constructor. + * + * @param other The information to copy. + */ + CRTCInformation(const CRTCInformation& other); + + /** + * Destructor. + */ + ~CRTCInformation(); + + /** + * Copy operator. + * + * @param other The information to copy. + */ + CRTCInformation& operator =(const CRTCInformation& other); + + + + /** + * The Extended Display Identification Data associated with + * the attached monitor. This is raw byte array that is usually + * 128 bytes long. It is not NUL-terminate, rather its length + * is stored in `edid_length`. + */ + unsigned char* edid; + + /** + * The length of `edid`. + */ + size_t edid_length; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int edid_error; + + + /** + * The phyical width, in millimetres, of the viewport of the + * attached monitor, as reported by the adjustment method. This + * value may be incorrect, which is a known issue with the X + * server where it is the result of the X server attempting + * the estimate the size on its own. + * Zero means that its is not applicable, which is the case + * for projectors. + */ + size_t width_mm; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int width_mm_error; + + + /** + * The phyical height, in millimetres, of the viewport of the + * attached monitor, as reported by the adjustment method. This + * value may be incorrect, which is a known issue with the X + * server where it is the result of the X server attempting + * the estimate the size on its own. + * Zero means that its is not applicable, which is the case + * for projectors. + */ + size_t height_mm; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int height_mm_error; + + + /** + * The phyical width, in millimetres, of the viewport of the + * attached monitor, as reported by it the monitor's Extended + * Display Information Data. This value can only contain whole + * centimetres, which means that the result is always zero + * modulus ten. However, this could change with revisions of + * the EDID structure. + * Zero means that its is not applicable, which is the case + * for projectors. + */ + size_t width_mm_edid; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int width_mm_edid_error; + + + /** + * The phyical height, in millimetres, of the viewport of the + * attached monitor, as reported by it the monitor's Extended + * Display Information Data. This value can only contain whole + * centimetres, which means that the result is always zero + * modulus ten. However, this could change with revisions of + * the EDID structure. + * Zero means that its is not applicable, which is the case + * for projectors. + */ + size_t height_mm_edid; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int height_mm_edid_error; + + + /** + * The size of the encoding axis of the red gamma ramp. + */ + size_t red_gamma_size; + + /** + * The size of the encoding axis of the green gamma ramp. + */ + size_t green_gamma_size; + + /** + * The size of the encoding axis of the blue gamma ramp. + */ + size_t blue_gamma_size; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int gamma_size_error; + + + /** + * The bit-depth of the value axes of gamma ramps, + * -1 for single precision floating point, and -2 for + * double precision floating point. + */ + signed gamma_depth; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int gamma_depth_error; + + + /** + * Non-zero gamma ramp adjustments are supported. + */ + int gamma_support; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int gamma_support_error; + + + /** + * The layout of the subpixels. + * You cannot count on this value --- especially for CRT:s --- + * but it is provided anyway as a means of distinguishing monitors. + */ + SubpixelOrder subpixel_order; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int subpixel_order_error; + + + /** + * Whether there is a monitors connected to the CRTC. + */ + int active; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int active_error; + + + /** + * The name of the connector as designated by the display + * server or as give by this library in case the display + * server lacks this feature. + */ + std::string* connector_name; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int connector_name_error; + + + /** + * The type of the connector that is associated with the CRTC. + */ + ConnectorType connector_type; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int connector_type_error; + + + /** + * The gamma characteristics of the monitor as reported + * in its Extended Display Information Data. The value + * holds the value for the red channel. If you do not have + * and more accurate measurement of the gamma for the + * monitor this could be used to give a rought gamma + * correction; simply divide the value with 2.2 and use + * the result for the red channel in the gamma correction. + */ + float gamma_red; + + /** + * The gamma characteristics of the monitor as reported + * in its Extended Display Information Data. The value + * holds the value for the green channel. If you do not have + * and more accurate measurement of the gamma for the + * monitor this could be used to give a rought gamma + * correction; simply divide the value with 2.2 and use + * the result for the green channel in the gamma correction. + */ + float gamma_green; + + /** + * The gamma characteristics of the monitor as reported + * in its Extended Display Information Data. The value + * holds the value for the blue channel. If you do not have + * and more accurate measurement of the gamma for the + * monitor this could be used to give a rought gamma + * correction; simply divide the value with 2.2 and use + * the result for the blue channel in the gamma correction. + */ + float gamma_blue; + + /** + * Zero on success, positive it holds the value `errno` had + * when the reading failed, otherwise (negative) the value + * of an error identifier provided by this library. + */ + int gamma_error; + + }; + + +} + + +#endif + |