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| -rw-r--r-- | src/libcoopgamma.py | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/src/libcoopgamma.py b/src/libcoopgamma.py new file mode 100644 index 0000000..596a8de --- /dev/null +++ b/src/libcoopgamma.py @@ -0,0 +1,413 @@ +# -*- python -*- +''' +pylibcoopgamma -- Python library for interfacing with cooperative gamma servers +Copyright (C) 2016 Mattias Andrée (maandree@kth.se) + +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/>. +''' + +import enum + + +class Support(enum.IntEnum): + ''' + Values used to indicate the support for gamma adjustments + + @value NO=0 Gamma adjustments are not supported + @value MAYBE=1 Don't know whether gamma adjustments are supported + @value YES=2 Gamma adjustments are supported + ''' + NO = 0 + MAYBE = 1 + YES = 2 + + +class Depth(enum.IntEnum): + ''' + Values used to tell which datatype is used for the gamma ramp stops + + The values will always be the number of bits for integral types, and + negative for floating-point types + + @value UINT8=8 Unsigned 8-bit integer + @value UINT16=16 Unsigned 16-bit integer + @value UINT32=32 Unsigned 32-bit integer + @value UINT64=64 Unsigned 64-bit integer + @value FLOAT<0 Single-precision floating-point + @value DOUBLE<0 Double-precision floating-point + ''' + UINT8 = 8 + UINT16 = 16 + UINT32 = 32 + UINT64 = 64 + FLOAT = -1 + DOUBLE = -2 + + +class Lifespan(enum.IntEnum): + ''' + Values used to tell when a filter should be removed + + @value REMOVE=0 Remove the filter now + @value UNTIL_DEATH>0 Remove the filter when disconnecting from the coopgamma server + @value UNTIL_REMOVAL>0 Only remove the filter when it is explicitly requested + ''' + REMOVE = 0 + UNTIL_DEATH = 1 + UNTIL_REMOVAL = 2 + + +class Colourspace(enum.IntEnum): + ''' + Colourspaces + + @value UNKNOWN=0 The colourspace is unknown + @value SRGB>0 sRGB (Standard RGB) + @value RGB>0 RGB other than sRGB + @value NON_RGB>0 Non-RGB multicolour + @value GREY>0 Monochrome, greyscale, or some other singlecolour scale + ''' + UNKNOWN = 0 + SRGB = 1 + RGB = 2 + NON_RGB = 3 + GREY = 4 + + +class Ramps: + ''' + Gamma ramp structure + + @variable red:list<int> The red gamma ramp + @variable green:list<int> The green gamma ramp + @variable blue:list<int> The blue gamma ramp + ''' + def __init__(self, red_size : int, green_size : int, blue_size : int): + ''' + Constructor + + @param red_size:int The number of stops in the red ramp + @param green_size:int The number of stops in the green ramp + @param blue_size:int The number of stops in the blue ramp + ''' + self.red = [0] * red_size + self.green = [0] * green_size + self.blue = [0] * blue_size + + +class Filter: + ''' + Data set to the coopgamma server to apply, update, or remove a filter + + @variable priority:int The priority of the filter, higher priority + is applied first. The gamma correction should + have priority 0. This is a signed 64-bit integer. + @variable crtc:str The CRTC for which this filter shall be applied + @variable fclass:str Identifier for the filter. + The syntax must be "${PACKAGE_NAME}::${COMMAND_NAME}::${RULE}". + @variable lifespan:Lifespan When shall the filter be removed? + If this member's value is `LIBCOOPGAMMA_REMOVE`, + only `.crtc` and `.class` need also be defined. + @variable depth:Depth The data type and bit-depth of the ramp stops + @variable ramps:Ramps The gamma ramp adjustments of the filter + ''' + def __init__(self, priority : int = None, crtc : str = None, fclass : str = None, + lifespan : Lifespan = None, depth : Depth = None, ramps : Ramps = None): + ''' + Constructor + + @param priority:int The priority of the filter, higher priority + is applied first. The gamma correction should + have priority 0. This is a signed 64-bit integer. + @param crtc:str The CRTC for which this filter shall be applied + @param fclass:str Identifier for the filter. + The syntax must be "${PACKAGE_NAME}::${COMMAND_NAME}::${RULE}". + @param lifespan:Lifespan When shall the filter be removed? + If this member's value is `LIBCOOPGAMMA_REMOVE`, + only `.crtc` and `.class` need also be defined. + @param depth:Depth The data type and bit-depth of the ramp stops + @param ramps:Ramps The gamma ramp adjustments of the filter + ''' + self.priority = priority + self.crtc = crtc + self.fclass = fclass + self.lifespan = lifespan + self.depth = depth + self.ramps = ramps + + +class GamutPoint: + ''' + The x- and y-values (CIE xyY) of a colour + + @variable x_raw:int The x-value (CIE xyY) multiplied by 1024 + @variable y_raw:int The y-value (CIE xyY) multiplied by 1024 + @variable x:int The x-value (CIE xyY) + @variable y:int The y-value (CIE xyY) + ''' + def __init__(self, x, y): + ''' + Constructor + + @param x:int The x-value (CIE xyY) multiplied by 1024 + @param y:int The y-value (CIE xyY) multiplied by 1024 + ''' + self.x_raw, self.x = x, x / 1024 + self.y_raw, self.y = y, y / 1024 + + +class Gamut: + ''' + The values of the monitor's colour stimuli + + @variable red:GamutPoint The red stimuli + @variable green:GamutPoint The green stimuli + @variable blue:GamutPoint The blue stimuli + ''' + def __init__(self, red : GamutPoint = None, green : GamutPoint = None, blue : GamutPoint = None): + ''' + Constructor + + @param red:GamutPoint The red stimuli + @param green:GamutPoint The green stimuli + @param blue:GamutPoint The blue stimuli + ''' + self.red = red + self.green = green + self.blue = blue + + +class CRTCInfo: + ''' + Gamma ramp meta information for a CRTC + + @variable cooperative:bool Is cooperative gamma server running? + @variable depth:Depth? The data type and bit-depth of the ramp stops + @variable supported:Support Is gamma adjustments supported on the CRTC? + If not, `depth`, `red_size`, `green_size`, + and `blue_size` are undefined + @variable red_size:int? The number of stops in the red ramp + @variable green_size:int? The number of stops in the green ramp + @variable blue_size:int? The number of stops in the blue ramp + @variable colourspace:Colourspace The monitor's colourspace + @variable gamut:Gamut? Measurements of the monitor's colourspace, + `None` if the this information is unavailable. + If this is not `None`, but the colourspace + is not RGB (or sRGB), there is something + wrong. Always check the colourspace. + ''' + def __init__(self, cooperative : bool = None, depth : Depth = None, supported : Support = None, + red_size : int = None, green_size : int = None, blue_size : int = None, + colourspace : Colourspace = None, gamut : Gamut = None): + ''' + Constructor + + @param cooperative:bool Is cooperative gamma server running? + @param depth:Depth? The data type and bit-depth of the ramp stops + @param supported:Support Is gamma adjustments supported on the CRTC? + If not, `depth`, `red_size`, `green_size`, + and `blue_size` are undefined + @param red_size:int? The number of stops in the red ramp + @param green_size:int? The number of stops in the green ramp + @param blue_size:int? The number of stops in the blue ramp + @param colourspace:Colourspace The monitor's colourspace + @param gamut:Gamut? Measurements of the monitor's colourspace, + `None` if the this information is unavailable + ''' + self.cooperative = cooperative + self.depth = depth + self.supported = supported + self.red_size = red_size + self.green_size = green_size + self.blue_size = blue_size + self.colourspace = colourspace + self.gamut = gamut + + def make_ramps(self) -> Ramps: + ''' + Construct a `Ramps` instances for this CRTC + + @return :Ramps An instance of `Ramps` with same a number of ramp stops + matching this CRTC + ''' + return Ramps(self.red_size, self.green_size, self.blue_size) + + +class FilterQuery: + ''' + Data sent to the coopgamma server when requestng the current filter table + + @variable high_priority:int Do no return filters with higher priority than + this value. This is a signed 64-bit integer. + @variable low_priority:int Do no return filters with lower priority than + this value. This is a signed 64-bit integer. + @variable crtc:str The CRTC for which the the current filters shall returned + @variable coalesce:bool Whether to coalesce all filters into one gamma ramp triplet + ''' + def __init__(self, high_priority : int, low_priority : int, crtc : str, coalesce : bool): + ''' + Constructor + + @param high_priority:int Do no return filters with higher priority than + this value. This is a signed 64-bit integer. + @param low_priority:int Do no return filters with lower priority than + this value. This is a signed 64-bit integer. + @param crtc:str The CRTC for which the the current filters shall returned + @param coalesce:bool Whether to coalesce all filters into one gamma ramp triplet + ''' + self.high_priority = high_priority + self.low_priority = low_priority + self.crtc = crtc + self.coalesce = coalesce + + +class QueriedFilter: + ''' + Stripped down version of `Filter` which only contains the + information returned in response to "Command: get-gamma" + + @variable priority:int The filter's priority. This is a signed 64-bit integer. + @variable fclass:str The filter's class + @variable ramps:Ramps The gamma ramp adjustments of the filter + ''' + def __init__(self, priority : int = None, fclass : str = None, ramps : Ramps = None): + ''' + Constructor + + @param priority:int The filter's priority. This is a signed 64-bit integer. + @param fclass:str The filter's class + @param ramps:Ramps The gamma ramp adjustments of the filter + ''' + self.priority = priority + self.fclass = fclass + self.ramps = ramps + + +class FilterTable: + ''' + Response type for "Command: get-gamma": a list of applied filters + and meta-information that was necessary for decoding the response + + @variable red_size:int The number of stops in the red ramp + @variable green_size:int The number of stops in the green ramp + @variable blue_size:int The number of stops in the blue ramp + @variable depth:Depth The data type and bit-depth of the ramp stops + @variable filters:list<QueriedFilter> The filters, should be ordered by priority + in descending order, lest there is something + wrong with the coopgamma server. + If filter coalition was requested, there will + be exactly one filter and `filters[0].class` + and `filters[0].priority` are undefined. + ''' + def __init__(self, red_size : int = None, green_size : int = None, blue_size : int = None, + depth : Depth = None, filters : list): + ''' + Constructor + + @param red_size:int The number of stops in the red ramp + @param green_size:int The number of stops in the green ramp + @param blue_size:int The number of stops in the blue ramp + @param depth:Depth The data type and bit-depth of the ramp stops + @param filters:list<QueriedFilter> The filters, should be ordered by priority + in descending order, lest there is something + wrong with the coopgamma server. + If filter coalition was requested, there will + be exactly one filter and `filters[0].class` + and `filters[0].priority` are undefined. + ''' + self.red_size = red_size + self.green_size = green_size + self.blue_size = blue_size + self.depth = depth + self.filters = filters + + def make_ramps(self) -> Ramps: + ''' + Construct a `Ramps` instances for this CRTC + + @return :Ramps An instance of `Ramps` with same a number of ramp stops + matching this CRTC + ''' + return Ramps(self.red_size, self.green_size, self.blue_size) + + +class ErrorReport: + ''' + Error message from coopgamma server + + @variable number:int The error code. If `.custom` is false, 0 indicates success, + otherwise, 0 indicates that no error code has been assigned. + @variable custom:bool Is this a custom error? + @variable server_side:bool Did the error occur on the server-side? + @variable description:str? Error message, can be `None` if `custom` is false + ''' + def __init__(self, number : int = None, custom : bool = None, + server_side : bool = None, description : str = None): + ''' + Constructor + + @param number:int The error code. If `.custom` is false, 0 indicates success, + otherwise, 0 indicates that no error code has been assigned. + @param custom:bool Is this a custom error? + @param server_side:bool Did the error occur on the server-side? + @param description:str? Error message, can be `None` if `custom` is false + ''' + self.number = number + self.custom = custom + self.server_side = server_side + self.description = description + + +class Context: + ''' + Library state + + Use of this structure is not thread-safe, create + one instance per thread that uses this structure + + @variable error:ErrorReport The error of the last failed function call. This + member is undefined after successful function call. + @variable fd:int File descriptor for the socket + ''' + def __init__(self): + ''' + Constructor + ''' + self.error = ErrorReport + self.fd = None + self.address = None + + def __del__(self): + ''' + Destructor + ''' + pass + + +class AsyncContext: + ''' + Information necessary to identify and parse a response from the server + ''' + def __init__(self): + ''' + Constructor + ''' + self.address = None + + def __del__(self): + ''' + Destructor + ''' + pass + |