# -*- python -*- ''' pylibgamma — Python 3 wrapper for libgamma 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 . ''' LIBGAMMA_METHOD_DUMMY = 0 ''' The identifier for the dummy adjustment method. This method can be configured and is useful for testing your program's ability to handle errors. ''' LIBGAMMA_METHOD_X_RANDR = 1 ''' The identifier for the adjustment method with uses the RandR protocol under the X display server. ''' LIBGAMMA_METHOD_X_VIDMODE = 2 ''' The identifier for the adjustment method with uses the VidMode protocol under the X display server. This is an older alternative to RandR that can work on some drivers that are not supported by RandR, however it can only control the primary CRTC per screen (partition). ''' LIBGAMMA_METHOD_LINUX_DRM = 3 ''' The identifier for the Direct Rendering Manager adjustment method that is available in Linux (built in to the Linux kernel with a userland library for access) and is a part of the Direct Rendering Infrastructure. This adjustment method all work when you are in non-graphical mode; however a display server cannnot be started while this is running, but it can be started while a display server is running. ''' LIBGAMMA_METHOD_W32_GDI = 4 ''' The identifier for the Graphics Device Interface adjustment method that is available in Windows. This method is not well tested; it can be compiled to be available under X.org using a translation layer. ''' LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS = 5 ''' The identifier for the CoreGraphics adjustment method that is available in Mac OS X that can adjust gamma ramps under the Quartz display server. This method is not well tested; it can be compiled to be available under X.org using a translation layer. ''' LIBGAMMA_METHOD_MAX = 5 ''' The index of the last gamma method, neither it nor any index before it may actually be supported as it could have been disabled at compile-time ''' LIBGAMMA_METHOD_COUNT = (LIBGAMMA_METHOD_MAX + 1) ''' The number adjustment methods provided by this library. Note however that this includes adjstment methods that have been removed at compile-time. ''' class MethodCapabilities: ''' Capabilities of adjustment methods ---- Integer variables ---- @variable crtc_information OR of the CRTC information fields in `CRTCInformation` that may (but can fail) be read successfully. ---- Boolean variables ---- @variable default_site_known Whether the default site is known, if true the site is integrated to the system or can be determined using environment variables. @variable multiple_sites Whether the adjustment method supports multiple sites rather than just the default site. @variable multiple_partitions Whether the adjustment method supports multiple partitions per site. @variable multiple_crtcs Whether the adjustment method supports multiple CRTC:s per partition per site. @variable partitions_are_graphics_cards Whether the partition to graphics card is a bijection. @variable site_restore Whether the adjustment method supports `site_restore`. @variable partition_restore Whether the adjustment method supports `partition_restore`. @variable crtc_restore Whether the adjustment method supports `crtc_restore`. @variable identical_gamma_sizes Whether the `red_gamma_size`, `green_gamma_size` and `blue_gamma_size` fields in `CRTCInformation` will always have the same values as each other for the adjustment method. @variable fixed_gamma_size Whether the `red_gamma_size`, `green_gamma_size` and `blue_gamma_size` fields in `CRTCInformation` will always be filled with the same value for the adjustment method. @variable fixed_gamma_depth Whether the `gamma_depth` field in `CRTCInformation` will always be filled with the same value for the adjustment method. @variable real Whether the adjustment method will actually perform adjustments. @variable fake Whether the adjustment method is implement using a translation layer. ''' def __init__(self, crtc_information : int = 0, booleans : int = 0): ''' Constructor @param crtc_information The value for `CRTCInformation` @param booleans The value for each booleanic variable ''' self.crtc_information = crtc_information self.default_site_known = (booleans & (1 << 0)) != 0 self.multiple_sites = (booleans & (1 << 1)) != 0 self.multiple_partitions = (booleans & (1 << 2)) != 0 self.multiple_crtcs = (booleans & (1 << 3)) != 0 self.partitions_are_graphics_cards = (booleans & (1 << 4)) != 0 self.site_restore = (booleans & (1 << 5)) != 0 self.partition_restore = (booleans & (1 << 6)) != 0 self.crtc_restore = (booleans & (1 << 7)) != 0 self.identical_gamma_sizes = (booleans & (1 << 8)) != 0 self.fixed_gamma_size = (booleans & (1 << 9)) != 0 self.fixed_gamma_depth = (booleans & (1 << 10)) != 0 self.real = (booleans & (1 << 11)) != 0 self.fake = (booleans & (1 << 12)) != 0 class CRTCInformation: ''' Cathode ray tube controller information data structure. @variable edid:bytes The Extended Display Identification Data associated with the attached monitor. This is raw byte array that is usually 128 bytes long. @variable edid_error:int 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. @variable width_mm:int 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. @variable width_mm_error:int 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. @variable height_mm:int 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. @variable height_mm_error:int 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. @variable width_mm_edid:int 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. @variable width_mm_edid_error:int 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. @variable height_mm_edid:int 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. @variable height_mm_edid_error:int 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. @variable red_gamma_size:int The size of the encoding axis of the red gamma ramp. @variable green_gamma_size:int The size of the encoding axis of the green gamma ramp. @variable blue_gamma_size:int The size of the encoding axis of the blue gamma ramp. @variable gamma_size_error:int 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. @variable gamma_depth:int The bit-depth of the value axes of gamma ramps, -1 for single precision floating point, and -2 for double precision floating point. @variable gamma_depth_error:int 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. @variable gamma_support:int Non-zero gamma ramp adjustments are supported. @variable gamma_support_error:int 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. @variable subpixel_order:int 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. @variable subpixel_order_error:int 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. @variable active:bool Whether there is a monitors connected to the CRTC. @variable active_error:int 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. @variable connector_name:str 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. @variable connector_name_error:int 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. @variable connector_type:int The type of the connector that is associated with the CRTC. @variable connector_type_error:int 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. @variable gamma_red:float 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. @variable gamma_green:float 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. @variable gamma_blue:float 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. @variable gamma_error:int 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. ''' def __init__(self): ''' Constructor ''' pass LIBGAMMA_CONNECTOR_TYPE_Unknown = 0 ''' The adjustment method does not know the connector's type (This could be considered an error). ''' LIBGAMMA_CONNECTOR_TYPE_VGA = 1 ''' Video Graphics Array (VGA). ''' LIBGAMMA_CONNECTOR_TYPE_DVI = 2 ''' Digital Visual Interface, unknown type. ''' LIBGAMMA_CONNECTOR_TYPE_DVII = 3 ''' Digital Visual Interface, integrated (DVI-I). ''' LIBGAMMA_CONNECTOR_TYPE_DVID = 4 ''' Digital Visual Interface, digital only (DVI-D). ''' LIBGAMMA_CONNECTOR_TYPE_DVIA = 5 ''' Digital Visual Interface, analogue only (DVI-A). ''' LIBGAMMA_CONNECTOR_TYPE_Composite = 6 ''' Composite video. ''' LIBGAMMA_CONNECTOR_TYPE_SVIDEO = 7 ''' Separate Video (S-video). ''' LIBGAMMA_CONNECTOR_TYPE_LVDS = 8 ''' Low-voltage differential signaling (LVDS). ''' LIBGAMMA_CONNECTOR_TYPE_Component = 9 ''' Component video, usually separate cables for each channel. ''' LIBGAMMA_CONNECTOR_TYPE_9PinDIN = 10 ''' 9 pin DIN (Deutsches Institut für Normung) connector. ''' LIBGAMMA_CONNECTOR_TYPE_DisplayPort = 11 ''' DisplayPort. ''' LIBGAMMA_CONNECTOR_TYPE_HDMI = 12 ''' High-Definition Multimedia Interface (HDMI), unknown type. ''' LIBGAMMA_CONNECTOR_TYPE_HDMIA = 13 ''' High-Definition Multimedia Interface, type A (HDMI-A). ''' LIBGAMMA_CONNECTOR_TYPE_HDMIB = 14 ''' High-Definition Multimedia Interface, type B (HDMI-B). ''' LIBGAMMA_CONNECTOR_TYPE_TV = 15 ''' Television, unknown connector. ''' LIBGAMMA_CONNECTOR_TYPE_eDP = 16 ''' Embedded DisplayPort (eDP). ''' LIBGAMMA_CONNECTOR_TYPE_VIRTUAL = 17 ''' A virtual connector. ''' LIBGAMMA_CONNECTOR_TYPE_DSI = 18 ''' Display Serial Interface (DSI). ''' LIBGAMMA_CONNECTOR_TYPE_LFP = 19 ''' LFP connector. (If you know what this is add it to Wikipedia.) ''' LIBGAMMA_CONNECTOR_TYPE_COUNT = 20 ''' The number of `LIBGAMMA_CONNECTOR_*` values defined. ''' LIBGAMMA_SUBPIXEL_ORDER_UNKNOWN = 0 ''' The adjustment method does not know the order of the subpixels. (This could be considered an error.) ''' LIBGAMMA_SUBPIXEL_ORDER_NONE = 1 ''' There are no subpixels in the monitor. ''' LIBGAMMA_SUBPIXEL_ORDER_HORIZONTAL_RGB = 2 ''' The subpixels are ordered red, green and then blue, from left to right. ''' LIBGAMMA_SUBPIXEL_ORDER_HORIZONTAL_BGR = 3 ''' The subpixels are ordered blue, green and then red, from left to right. ''' LIBGAMMA_SUBPIXEL_ORDER_VERTICAL_RGB = 4 ''' The subpixels are ordered red, green and then blue, from the top down. ''' LIBGAMMA_SUBPIXEL_ORDER_VERTICAL_BGR = 5 ''' The subpixels are ordered blue, green and then red, from the top down. ''' LIBGAMMA_SUBPIXEL_ORDER_COUNT = 6 ''' The number of `LIBGAMMA_SUBPIXEL_ORDER_*` values defined. ''' LIBGAMMA_CRTC_INFO_EDID = 1 << 0 ''' For a `CRTCInformation` fill in the values for `edid` and `edid_length` and report errors to `edid_error`. ''' LIBGAMMA_CRTC_INFO_WIDTH_MM = 1 << 1 ''' For a `CRTCInformation` fill in the value for `width_mm` and report errors to `width_mm_error`. ''' LIBGAMMA_CRTC_INFO_HEIGHT_MM = 1 << 2 ''' For a `CRTCInformation` fill in the value for `height_mm` and report errors to `height_mm_error`. ''' LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID = 1 << 3 ''' For a `CRTCInformation` fill in the value for `width_mm_edid` and report errors to `width_mm_edid_error`. ''' LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID = 1 << 4 ''' For a `CRTCInformation` fill in the value for `height_mm_edid` and report errors to `height_mm_edid_error`. ''' LIBGAMMA_CRTC_INFO_GAMMA_SIZE = 1 << 5 ''' For a `CRTCInformation` fill in the values for `red_gamma_size`, `green_gamma_size` and `blue_gamma_size`. and report errors to `gamma_size_error` ''' LIBGAMMA_CRTC_INFO_GAMMA_DEPTH = 1 << 6 ''' For a `CRTCInformation` fill in the value for `gamma_depth` and report errors to `gamma_depth_error`. ''' LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT = 1 << 7 ''' For a `CRTCInformation` fill in the value for `gamma_support` and report errors to `gamma_support_error`. ''' LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER = 1 << 8 ''' For a `CRTCInformation` fill in the value for `subpixel_order` and report errors to `subpixel_order_error`. ''' LIBGAMMA_CRTC_INFO_ACTIVE = 1 << 9 ''' For a `CRTCInformation` fill in the value for `active` and report errors to `active_error`. ''' LIBGAMMA_CRTC_INFO_CONNECTOR_NAME = 1 << 10 ''' For a `CRTCInformation` fill in the value for `connector_name` and report errors to `connector_name_error`. ''' LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE = 1 << 11 ''' For a `CRTCInformation` fill in the value for `connector_type` and report errors to `connector_type_error`. ''' LIBGAMMA_CRTC_INFO_GAMMA = 1 << 12 ''' For a `CRTCInformation` fill in the values for `gamma_red`, `gamma_green` and `gamma_blue` and report errors to `gamma_error`. ''' LIBGAMMA_CRTC_INFO_COUNT = 13 ''' The number of `LIBGAMMA_CRTC_INFO_*` values defined. ''' ''' Macro for both `CRTCInformation` fields that can specify the size of the monitor's viewport as specified in the monitor's Extended Display Information Data. ''' LIBGAMMA_CRTC_INFO_MACRO_EDID_VIEWPORT = LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID | LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID ''' Macro for all `CRTCInformation` fields that can be filled if the adjustment method have support for reading the monitors' Extended Display Information Data. ''' LIBGAMMA_CRTC_INFO_MACRO_EDID = LIBGAMMA_CRTC_INFO_EDID | LIBGAMMA_CRTC_INFO_MACRO_EDID_VIEWPORT | LIBGAMMA_CRTC_INFO_GAMMA ''' Macro for both `CRTCInformation` fields that can specify the size of the monitor's viewport as provided by the adjustment method without this library having to parse the monitor's Extended Display Information Data. ''' LIBGAMMA_CRTC_INFO_MACRO_VIEWPORT = LIBGAMMA_CRTC_INFO_WIDTH_MM | LIBGAMMA_CRTC_INFO_HEIGHT_MM ''' Macro for the `CRTCInformation` fields that specifies the CRTC's gamma ramp sizes and gamma ramp depth. ''' LIBGAMMA_CRTC_INFO_MACRO_RAMP = LIBGAMMA_CRTC_INFO_GAMMA_SIZE | LIBGAMMA_CRTC_INFO_GAMMA_DEPTH ''' Macro for the `CRTCInformation` fields that specifies the CRTC's connector type and the partition unique name of the connector. ''' LIBGAMMA_CRTC_INFO_MACRO_CONNECTOR = LIBGAMMA_CRTC_INFO_CONNECTOR_NAME | LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE ''' Macro for the `CRTCInformation` fields that required there is a monitor attached to the connector, and that status itself. ''' LIBGAMMA_CRTC_INFO_MACRO_ACTIVE = LIBGAMMA_CRTC_INFO_MACRO_EDID | LIBGAMMA_CRTC_INFO_MACRO_VIEWPORT | LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER | LIBGAMMA_CRTC_INFO_ACTIVE