# See LICENSE file for copyright and license details. from libgamma_error import create_error 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 boolean 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, data): ''' Constructor @param data:list The value of each variable ''' self.edid = data[0] self.edid_error = data[1] self.width_mm = data[2] self.width_mm_error = data[3] self.height_mm = data[4] self.height_mm_error = data[5] self.width_mm_edid = data[6] self.width_mm_edid_error = data[7] self.height_mm_edid = data[8] self.height_mm_edid_error = data[9] self.red_gamma_size = data[10] self.green_gamma_size = data[11] self.blue_gamma_size = data[12] self.gamma_size_error = data[13] self.gamma_depth = data[14] self.gamma_depth_error = data[15] self.gamma_support = data[16] self.gamma_support_error = data[17] self.subpixel_order = data[18] self.subpixel_order_error = data[19] self.active = data[20] self.active_error = data[21] self.connector_name = data[22] self.connector_name_error = data[23] self.connector_type = data[24] self.connector_type_error = data[25] self.gamma_red = data[26] self.gamma_green = data[27] self.gamma_blue = data[28] self.gamma_error = data[29] 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 ''' LIBGAMMA_CRTC_INFO_MACRO_EDID_VIEWPORT = LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID | \ LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID ''' 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 = LIBGAMMA_CRTC_INFO_EDID | \ LIBGAMMA_CRTC_INFO_MACRO_EDID_VIEWPORT | \ LIBGAMMA_CRTC_INFO_GAMMA ''' 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_VIEWPORT = LIBGAMMA_CRTC_INFO_WIDTH_MM | \ LIBGAMMA_CRTC_INFO_HEIGHT_MM ''' 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_RAMP = LIBGAMMA_CRTC_INFO_GAMMA_SIZE | \ LIBGAMMA_CRTC_INFO_GAMMA_DEPTH ''' Macro for the `CRTCInformation` fields that specifies the CRTC's gamma ramp sizes and gamma ramp depth ''' LIBGAMMA_CRTC_INFO_MACRO_CONNECTOR = LIBGAMMA_CRTC_INFO_CONNECTOR_NAME | \ LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE ''' Macro for the `CRTCInformation` fields that specifies the CRTC's connector type and the partition unique name of the connector ''' LIBGAMMA_CRTC_INFO_MACRO_ACTIVE = LIBGAMMA_CRTC_INFO_MACRO_EDID | \ LIBGAMMA_CRTC_INFO_MACRO_VIEWPORT | \ LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER | \ LIBGAMMA_CRTC_INFO_ACTIVE ''' Macro for the `CRTCInformation` fields that required there is a monitor attached to the connector, and that status itself ''' class GammaRamps: ''' Gamma ramp structure ''' class Ramp: ''' A gamma ramp for one single channel ''' def __init__(self, ramp, size : int, depth : int): ''' Constructor @param ramp The gamma ramp @param size The number of stops in the gamma ramp @param depth The depth of the gamma ramp ''' from libgamma_native_method import libgamma_native_gamma_ramps8_get from libgamma_native_method import libgamma_native_gamma_ramps16_get from libgamma_native_method import libgamma_native_gamma_ramps32_get from libgamma_native_method import libgamma_native_gamma_ramps64_get from libgamma_native_method import libgamma_native_gamma_rampsf_get from libgamma_native_method import libgamma_native_gamma_rampsd_get from libgamma_native_method import libgamma_native_gamma_ramps8_set from libgamma_native_method import libgamma_native_gamma_ramps16_set from libgamma_native_method import libgamma_native_gamma_ramps32_set from libgamma_native_method import libgamma_native_gamma_ramps64_set from libgamma_native_method import libgamma_native_gamma_rampsf_set from libgamma_native_method import libgamma_native_gamma_rampsd_set self._size = size self._ramp = ramp if depth == 8: fs = (libgamma_native_gamma_ramps8_get, libgamma_native_gamma_ramps8_set) elif depth == 16: fs = (libgamma_native_gamma_ramps16_get, libgamma_native_gamma_ramps16_set) elif depth == 32: fs = (libgamma_native_gamma_ramps32_get, libgamma_native_gamma_ramps32_set) elif depth == 64: fs = (libgamma_native_gamma_ramps64_get, libgamma_native_gamma_ramps64_set) elif depth == -1: fs = (libgamma_native_gamma_rampsf_get, libgamma_native_gamma_rampsf_set) elif depth == -2: fs = (libgamma_native_gamma_rampsd_get, libgamma_native_gamma_rampsd_set) (self._get, self._set) = fs @property def size(self) -> int: ''' Get the number of stops in the gamma ramp @return The number of stops in the gamma ramp ''' return self._size @size.setter def size(self, value : int): ''' It is not possible to change this attribute, but a setter is required for the getter to function ''' raise AttributeError('cannot resize ramp') def __len__(self) -> int: ''' Get the number of stops in the gamma ramp @return The number of stops in the gamma ramp ''' return self._size def __getitem__(self, indices): ''' Read the gamma ramp @param indices:slice The stops to read @return :list The values of the read stops -- OR -- @param indices:int The index of the stop to read @return :int|float The value of the read stop ''' if isinstance(indices, slice): start = indices.start stop = indices.stop step = indices.step if start is None: start = 0 elif start < 0: start += self._size if stop is None: stop = self._size elif stop < 0: stop += self._size if step is None: step = 1 return [self._get(self._ramp, i) for i in range(start, stop, step)] else: if indices < 0: indices += self._size return self._get(self._ramp, indices) def __setitem__(self, indices, values): ''' Modify the gamma ramp @param indices:slice The stops to modify @param values:itr The values for the selected stops -- OR -- @param indices:int The index of the stop to modify @param values:int|float The new value for the stop ''' if isinstance(indices, slice): start = indices.start stop = indices.stop step = indices.step if start is None: start = 0 elif start < 0: start += self._size if stop is None: stop = self._size elif stop < 0: stop += self._size if step is None: step = 1 indices = list(range(start, stop, step)) if not len(indices) == len(values): raise ValueError('cannot resize ramp') for index, value in zip(indices, values): self._set(self._ramp, index, value) else: if indices < 0: indices += self._size self._set(self._ramp, indices, values) def __iter__(self) -> iter: ''' Read the gamma ramp @return :itr The values of each stop ''' for value in self[:]: yield value def map(self, function): ''' Modify the entire ramp using a function that maps encoding value to output value @param function:(float)→int|float Function that takes the encoding value as a [0, 1] floating point and returns its output value as the format using in the gamma ramp ''' max_i = self._size - 1 for i in range(self._size): self._set(self._ramp, i, function(i / max_i)) def __init__(self, red_size : int, green_size : int = ..., blue_size : int = ..., *, depth : int = 16): ''' Constructor @param red_size The number of stops in the gamma ramp for the red channel @param green_size The number of stops in the gamma ramp for the green channel, `...` for `red_size` @param blue_size The number of stops in the gamma ramp for the blue channel, `...` for `green_size` @param depth The depth of the gamma ramps ''' if green_size is ...: green_size = red_size if blue_size is ...: blue_size = green_size self._depth = depth from libgamma_native_method import libgamma_native_gamma_ramps8_create from libgamma_native_method import libgamma_native_gamma_ramps16_create from libgamma_native_method import libgamma_native_gamma_ramps32_create from libgamma_native_method import libgamma_native_gamma_ramps64_create from libgamma_native_method import libgamma_native_gamma_rampsf_create from libgamma_native_method import libgamma_native_gamma_rampsd_create if depth == 8: ramp_struct = libgamma_native_gamma_ramps8_create (red_size, green_size, blue_size) elif depth == 16: ramp_struct = libgamma_native_gamma_ramps16_create(red_size, green_size, blue_size) elif depth == 32: ramp_struct = libgamma_native_gamma_ramps32_create(red_size, green_size, blue_size) elif depth == 64: ramp_struct = libgamma_native_gamma_ramps64_create(red_size, green_size, blue_size) elif depth == -1: ramp_struct = libgamma_native_gamma_rampsf_create (red_size, green_size, blue_size) elif depth == -2: ramp_struct = libgamma_native_gamma_rampsd_create (red_size, green_size, blue_size) else: raise ValueError('invalid gamma ramp depth') if isinstance(ramp_struct, int): import libgamma_native_error as c error = OSError() error.errno = ramp_struct error.strerror = c.strerror(error.errno) raise error (self._ramps, red, green, blue) = ramp_struct self._red = GammaRamps.Ramp(red, red_size, depth) self._green = GammaRamps.Ramp(green, green_size, depth) self._blue = GammaRamps.Ramp(blue, blue_size, depth) def __del__(self): ''' This function is called when the object is not longer in use ''' from libgamma_native_method import libgamma_native_gamma_ramps8_free from libgamma_native_method import libgamma_native_gamma_ramps16_free from libgamma_native_method import libgamma_native_gamma_ramps32_free from libgamma_native_method import libgamma_native_gamma_ramps64_free from libgamma_native_method import libgamma_native_gamma_rampsf_free from libgamma_native_method import libgamma_native_gamma_rampsd_free if self._ramps == 0: return if self._depth == 8: libgamma_native_gamma_ramps8_free(self._ramps) elif self._depth == 16: libgamma_native_gamma_ramps16_free(self._ramps) elif self._depth == 32: libgamma_native_gamma_ramps32_free(self._ramps) elif self._depth == 64: libgamma_native_gamma_ramps64_free(self._ramps) elif self._depth == -1: libgamma_native_gamma_rampsf_free(self._ramps) elif self._depth == -2: libgamma_native_gamma_rampsd_free(self._ramps) @property def red(self) -> Ramp: ''' Get the gamma ramp for the red channel @return The gamma ramp for the red channel ''' return self._red @red.setter def red(self, value): ''' It is not possible to change this attribute, but a setter is required for the getter to function ''' raise AttributeError('cannot change ramps') @property def green(self) -> Ramp: ''' Get the gamma ramp for the green channel @return The gamma ramp for the green channel ''' return self._green @green.setter def green(self, value) -> Ramp: ''' It is not possible to change this attribute, but a setter is required for the getter to function ''' raise AttributeError('cannot change ramps') @property def blue(self): ''' Get the gamma ramp for the blue channel @return The gamma ramp for the blue channel ''' return self._blue @blue.setter def blue(self, value): ''' It is not possible to change this attribute, but a setter is required for the getter to function ''' raise AttributeError('cannot change ramps') @property def size(self) -> tuple: ''' Get the ramps' sizes @return :(red:int, green:int, blue:int) The size of each individual ramp ''' return (self._red.size, self._green.size, self._blue.size) @size.setter def size(self, value): ''' It is not possible to change this attribute, but a setter is required for the getter to function ''' raise AttributeError('cannot resize ramps') @property def depth(self) -> int: ''' Get the depth of ramps @return :int The ramps' depth in bits and -1 for single precision floating point and -2 for doublesingle precision floating point ''' return self._depth @depth.setter def depth(self, value): ''' It is not possible to change this attribute, but a setter is required for the getter to function ''' raise AttributeError('cannot change depth') class Site: ''' Site state On operating systems that integrate a graphical environment there is usually just one site. However, one systems with pluggable graphics, like Unix-like systems such as GNU/Linux and the BSD:s, there can usually be any (feasible) number of sites. In X.org parlance they are called displays. @variable method:int The adjustment method of the site @variable site:str? The site identifier @variable partitions_available:int The number of paritions available in the site ''' def __init__(self, method : int, site : str = None): ''' Constructor @param method:int The adjustment method of the site @param site:str? The site identifier ''' from libgamma_native_facade import libgamma_native_site_create (self._state, n) = libgamma_native_site_create(method, site) if self._state == 0: raise create_error(n) self.partitions_available = n self.method = method self.site = site def __del__(self): ''' This function is called when the object is not longer in use ''' from libgamma_native_facade import libgamma_native_site_free if not self._state == 0: libgamma_native_site_free(self._state) def restore(self): ''' Restore the gamma ramps all CRTC:s with the site to the system settings ''' from libgamma_native_facade import libgamma_native_site_restore r = libgamma_native_site_restore(self._state) if not r == 0: raise create_error(r) class Partition: ''' Partition state Probably the majority of display server only one partition per site. However, X.org can, and traditional used to have on multi-headed environments, multiple partitions per site. In X.org partitions are called 'screens'. It is not to be confused with monitor. A screen is a collection of monitors, and the mapping from monitors to screens is a surjection. On hardware-level adjustment methods, such as Direct Rendering Manager, a partition is a graphics card @variable site:Site The site of the partition @variable partition:int The index of the partition @variable crtcs_available:int The number of CRTC:s available in the parition ''' def __init__(self, site : Site, partition : int): ''' Constructor. @param site The site of the partition @param partition The index of the partition ''' from libgamma_native_facade import libgamma_native_partition_create (self._state, n) = libgamma_native_partition_create(site._state, partition) if self._state == 0: raise create_error(n) self.crtcs_available = n self.site = site self.partition = partition def __del__(self): ''' This function is called when the object is not longer in use ''' from libgamma_native_facade import libgamma_native_partition_free if not self._state == 0: libgamma_native_partition_free(self._state) def restore(self): ''' Restore the gamma ramps all CRTC:s with the partition to the system settings ''' from libgamma_native_facade import libgamma_native_partition_restore r = libgamma_native_partition_restore(self._state) if not r == 0: raise create_error(r) class CRTC: ''' Cathode ray tube controller state The CRTC controls the gamma ramps for the monitor that is plugged in to the connector that the CRTC belongs to @variable partition:Partition The partition of the CRTC @variable crtc:int The index of the CRTC ''' def __init__(self, partition : Partition, crtc : int): ''' Constructor @param partition The partition the of the CRTC @param crtc The index of the CRTC ''' from libgamma_native_facade import libgamma_native_crtc_create (self._state, n) = libgamma_native_crtc_create(partition._state, crtc) if self._state == 0: raise create_error(n) self.partition = partition self.crtc = crtc def __del__(self): ''' This function is called when the object is not longer in use ''' from libgamma_native_facade import libgamma_native_crtc_free if not self._state == 0: libgamma_native_crtc_free(self._state) def restore(self): ''' Restore the gamma ramps for a CRTC to the system settings for that CRTC ''' from libgamma_native_facade import libgamma_native_crtc_restore r = libgamma_native_crtc_restore(self._state) if not r == 0: raise create_error(r) def information(self, fields : int) -> tuple: ''' Read information about a CRTC @param field OR:ed identifiers for the information about the CRTC that should be read @return :(:CRTCInformation, :bool) The information about the CRTC and whether no errors occurred ''' from libgamma_native_facade import libgamma_native_get_crtc_information (data, e) = libgamma_native_get_crtc_information(self._state, fields) return (CRTCInformation(data), e == 0) def get_gamma(self, ramps : GammaRamps): ''' Get the current gamma ramps for the CRTC @param ramps The gamma ramps to fill with the current values ''' from libgamma_native_facade import libgamma_native_crtc_get_gamma_ramps8 from libgamma_native_facade import libgamma_native_crtc_get_gamma_ramps16 from libgamma_native_facade import libgamma_native_crtc_get_gamma_ramps32 from libgamma_native_facade import libgamma_native_crtc_get_gamma_ramps64 from libgamma_native_facade import libgamma_native_crtc_get_gamma_rampsf from libgamma_native_facade import libgamma_native_crtc_get_gamma_rampsd if ramps.depth == 8: r = libgamma_native_crtc_get_gamma_ramps8(self._state, ramps._ramps) elif ramps.depth == 16: r = libgamma_native_crtc_get_gamma_ramps16(self._state, ramps._ramps) elif ramps.depth == 32: r = libgamma_native_crtc_get_gamma_ramps32(self._state, ramps._ramps) elif ramps.depth == 64: r = libgamma_native_crtc_get_gamma_ramps64(self._state, ramps._ramps) elif ramps.depth == -1: r = libgamma_native_crtc_get_gamma_rampsf(self._state, ramps._ramps) elif ramps.depth == -2: r = libgamma_native_crtc_get_gamma_rampsd(self._state, ramps._ramps) if not r == 0: raise create_error(r) def set_gamma(self, ramps : GammaRamps): ''' Set gamma ramps for the CRTC @param ramps The gamma ramps to apply ''' from libgamma_native_facade import libgamma_native_crtc_set_gamma_ramps8 from libgamma_native_facade import libgamma_native_crtc_set_gamma_ramps16 from libgamma_native_facade import libgamma_native_crtc_set_gamma_ramps32 from libgamma_native_facade import libgamma_native_crtc_set_gamma_ramps64 from libgamma_native_facade import libgamma_native_crtc_set_gamma_rampsf from libgamma_native_facade import libgamma_native_crtc_set_gamma_rampsd if ramps.depth == 8: r = libgamma_native_crtc_set_gamma_ramps8(self._state, ramps._ramps) elif ramps.depth == 16: r = libgamma_native_crtc_set_gamma_ramps16(self._state, ramps._ramps) elif ramps.depth == 32: r = libgamma_native_crtc_set_gamma_ramps32(self._state, ramps._ramps) elif ramps.depth == 64: r = libgamma_native_crtc_set_gamma_ramps64(self._state, ramps._ramps) elif ramps.depth == -1: r = libgamma_native_crtc_set_gamma_rampsf(self._state, ramps._ramps) elif ramps.depth == -2: r = libgamma_native_crtc_set_gamma_rampsd(self._state, ramps._ramps) if not r == 0: raise create_error(r)