# -*- python -*-
# See LICENSE file for copyright and license details.
cimport cython
from libc.stddef cimport size_t
from libc.stdlib cimport malloc, free
from libc.stdint cimport int32_t, uint8_t, uint16_t, uint32_t, uint64_t
from libc.errno cimport errno
ctypedef int libgamma_subpixel_order_t
ctypedef int libgamma_connector_type_t
cdef extern from "include-libgamma.h":
ctypedef struct libgamma_method_capabilities_t:
# Capabilities of adjustment methods
int32_t crtc_information
# OR of the CRTC information fields in `libgamma_crtc_information_t`
# that may (but can fail) be read successfully
unsigned default_site_known # : 1
# Whether the default site is known, if true the site is integrated
# to the system or can be determined using environment variables
unsigned multiple_sites # : 1
# Whether the adjustment method supports multiple sites rather
# than just the default site
unsigned multiple_partitions # : 1
# Whether the adjustment method supports multiple partitions
# per site
unsigned multiple_crtcs # : 1
# Whether the adjustment method supports multiple CRTC:s
# per partition per site
unsigned partitions_are_graphics_cards # : 1
# Whether the partition to graphics card is a bijection
unsigned site_restore # : 1
# Whether the adjustment method supports `libgamma_site_restore`
unsigned partition_restore # : 1
# Whether the adjustment method supports `libgamma_partition_restore`
unsigned crtc_restore # : 1
# Whether the adjustment method supports `libgamma_crtc_restore`
unsigned identical_gamma_sizes # : 1
# 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
unsigned fixed_gamma_size # : 1
# 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
unsigned fixed_gamma_depth # : 1
# Whether the `gamma_depth` field in `libgamma_crtc_information_t`
# will always be filled with the same value for the adjustment method
unsigned real # : 1
# Whether the adjustment method will actually perform adjustments
unsigned fake # : 1
# Whether the adjustment method is implement using a translation layer
ctypedef struct libgamma_site_state_t:
# 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.
void *data
# Adjustment method implementation specific data.
# You as a user of this library should not touch this.
int method
# This field specifies, for the methods if this library,
# which adjustment method (display server and protocol)
# is used to adjust the gamma ramps
char *site
# The site identifier. It can either be `NULL` or a string.
# `NULL` indicates the default site. On systems like the
# Unix-like systems, where the graphics are pluggable, this
# is usually resolved by an environment variable, such as
# "DISPLAY" for X.org.
size_t partitions_available
# The number of partitions that is available on this site.
# 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.
ctypedef struct libgamma_partition_state_t:
# 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.
void *data
# Adjustment method implementation specific data.
# You as a user of this library should not touch this.
libgamma_site_state_t* site
# The site this partition belongs to
size_t partition
# The index of the partition
size_t crtcs_available
# The number of CRTC:s that are available under this
# partition. Note that the CRTC:s are not necessarily
# online.
ctypedef struct libgamma_crtc_state_t:
# 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
void* data
# Adjustment method implementation specific data.
# You as a user of this library should not touch this.
libgamma_partition_state_t* partition
# The partition this CRTC belongs to
size_t crtc
# The index of the CRTC within its partition
ctypedef struct libgamma_crtc_information_t:
# Cathode ray tube controller information data structure
unsigned char *edid
# 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`.
size_t edid_length
# The length of `edid`
int edid_error
# 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.
size_t width_mm
# 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.
int width_mm_error
# 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
size_t height_mm
# 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.
int height_mm_error
# 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
size_t width_mm_edid
# 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.
int width_mm_edid_error
# 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
size_t height_mm_edid
# 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.
int height_mm_edid_error
# 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
size_t red_gamma_size
# The size of the encoding axis of the red gamma ramp
size_t green_gamma_size
# The size of the encoding axis of the green gamma ramp
size_t blue_gamma_size
# The size of the encoding axis of the blue gamma ramp
int gamma_size_error
# 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
signed gamma_depth
# The bit-depth of the value axes of gamma ramps,
# -1 for single precision floating point, and -2 for
# double precision floating point
int gamma_depth_error
# 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
# Non-zero gamma ramp adjustments are supported
int gamma_support_error
# 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
libgamma_subpixel_order_t subpixel_order
# 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.
int subpixel_order_error
# 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
# Whether there is a monitors connected to the CRTC
int active_error
# 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
char *connector_name
# 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
int connector_name_error
# 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
libgamma_connector_type_t connector_type
# The type of the connector that is associated with the CRTC
int connector_type_error
# 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
float gamma_red
# 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_green
# 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_blue
# 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.
int gamma_error
# 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
ctypedef struct libgamma_gamma_ramps8_t:
# Gamma ramp structure for 8-bit gamma ramps
size_t red_size # The size of `red`
size_t green_size # The size of `green`
size_t blue_size # The size of `blue`
uint8_t *red # The gamma ramp for the red channel
uint8_t *green # The gamma ramp for the green channel
uint8_t *blue # The gamma ramp for the blue channel
ctypedef struct libgamma_gamma_ramps16_t:
# Gamma ramp structure for 16-bit gamma ramps
size_t red_size # The size of `red`
size_t green_size # The size of `green`
size_t blue_size # The size of `blue`
uint16_t *red # The gamma ramp for the red channel
uint16_t *green # The gamma ramp for the green channel
uint16_t *blue # The gamma ramp for the blue channel
ctypedef struct libgamma_gamma_ramps32_t:
# Gamma ramp structure for 32-bit gamma ramps
size_t red_size # The size of `red`
size_t green_size # The size of `green`
size_t blue_size # The size of `blue`
uint32_t *red # The gamma ramp for the red channel
uint32_t *green # The gamma ramp for the green channel
uint32_t *blue # The gamma ramp for the blue channel
ctypedef struct libgamma_gamma_ramps64_t:
# Gamma ramp structure for 64-bit gamma ramps
size_t red_size # The size of `red`
size_t green_size # The size of `green`
size_t blue_size # The size of `blue`
uint64_t *red # The gamma ramp for the red channel
uint64_t *green # The gamma ramp for the green channel
uint64_t *blue # The gamma ramp for the blue channel
ctypedef struct libgamma_gamma_rampsf_t:
# Gamma ramp structure for `float` gamma ramps
size_t red_size # The size of `red`
size_t green_size # The size of `green`
size_t blue_size # The size of `blue`
float *red # The gamma ramp for the red channel
float *green # The gamma ramp for the green channel
float *blue # The gamma ramp for the blue channel
ctypedef struct libgamma_gamma_rampsd_t:
# Gamma ramp structure for `double` gamma ramps
size_t red_size # The size of `red`
size_t green_size # The size of `green`
size_t blue_size # The size of `blue`
double *red # The gamma ramp for the red channel
double *green # The gamma ramp for the green channel
double *blue # The gamma ramp for the blue channel
cdef extern size_t libgamma_list_methods(int *methods, size_t buf_size, int operation) nogil
'''
List available adjustment methods by their order of preference based on the environment
@param methods Output array of methods, should be able to hold `LIBGAMMA_METHOD_COUNT` elements
@param buf_size The number of elements that fits in `methods`, it should be `LIBGAMMA_METHOD_COUNT`,
This is used to avoid writing outside the output buffer if this library adds new
adjustment methods without the users of the library recompiling
@param operation Allowed values:
0: Methods that the environment suggests will work, excluding fake
1: Methods that the environment suggests will work, including fake
2: All real non-fake methods
3: All real methods
4: All methods
Other values invoke undefined behaviour
@return The number of element that have been stored in `methods`, or should
have been stored if the buffer was large enough
'''
cdef extern int libgamma_is_method_available(int method) nogil
'''
Check whether an adjustment method is available, non-existing (invalid) methods will be
identified as not available under the rationale that the library may be out of date
@param method The adjustment method
@return Whether the adjustment method is available
'''
cdef extern void libgamma_method_capabilities(libgamma_method_capabilities_t *this, int method) nogil
'''
Return the capabilities of an adjustment method
@param this The data structure to fill with the method's capabilities
@param method The adjustment method (display server and protocol)
'''
cdef extern char *libgamma_method_default_site(int method) nogil
'''
Return the default site for an adjustment method
@param method The adjustment method (display server and protocol)
@return The default site, `NULL` if it cannot be determined or
if multiple sites are not supported by the adjustment
method. This value should not be `free`:d
'''
cdef extern const char *libgamma_method_default_site_variable(int method) nogil
'''
Return the default variable that determines
the default site for an adjustment method
@param method The adjustment method (display server and protocol)
@return The environ variables that is used to determine the
default site. `NULL` if there is none, that is, if
the method does not support multiple sites.
This value should not be `free`:d.
'''
cdef extern int libgamma_site_initialise(libgamma_site_state_t *this, int method, char *site) nogil
'''
Initialise an allocated site state
@param this The site state to initialise
@param method The adjustment method (display server and protocol)
@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
'''
cdef extern void libgamma_site_free(libgamma_site_state_t *this) nogil
'''
Release all resources held by a site state
and free the site state pointer
@param this The site state
'''
cdef extern int libgamma_site_restore(libgamma_site_state_t *this) nogil
'''
Restore the gamma ramps all CRTC:s 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
'''
cdef extern int libgamma_partition_initialise(libgamma_partition_state_t *this, libgamma_site_state_t* site, size_t partition) nogil
'''
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 index of the partition within the site
@return Zero on success, otherwise (negative) the value of an
error identifier provided by this library
'''
cdef extern void libgamma_partition_free(libgamma_partition_state_t *this) nogil
'''
Release all resources held by a partition state
and free the partition state pointer
@param this The partition state
'''
cdef extern int libgamma_partition_restore(libgamma_partition_state_t *this) nogil
'''
Restore the gamma ramps all CRTC:s 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
'''
cdef extern int libgamma_crtc_initialise(libgamma_crtc_state_t *this, libgamma_partition_state_t *partition, size_t crtc) nogil
'''
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 index of the CRTC within the partition
@return Zero on success, otherwise (negative) the value of an
error identifier provided by this library
'''
cdef extern void libgamma_crtc_free(libgamma_crtc_state_t *this) nogil
'''
Release all resources held by a CRTC state
and free the CRTC state pointer
@param this The CRTC state
'''
cdef extern int libgamma_crtc_restore(libgamma_crtc_state_t *this) nogil
'''
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
'''
cdef extern int libgamma_get_crtc_information(libgamma_crtc_information_t *this, libgamma_crtc_state_t *crtc, int32_t fields) nogil
'''
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`
'''
cdef extern void libgamma_crtc_information_destroy(libgamma_crtc_information_t *this) nogil
'''
Release all resources in an information data structure for a CRTC
@param this The CRTC information
'''
cdef extern int libgamma_crtc_get_gamma_ramps8(libgamma_crtc_state_t *this, libgamma_gamma_ramps8_t *ramps) nogil
'''
Get the current gamma ramps for a CRTC, 8-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
'''
cdef extern int libgamma_crtc_set_gamma_ramps8(libgamma_crtc_state_t *this, libgamma_gamma_ramps8_t ramps) nogil
'''
Set the gamma ramps for a CRTC, 8-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
'''
cdef extern int libgamma_crtc_get_gamma_ramps16(libgamma_crtc_state_t *this, libgamma_gamma_ramps16_t *ramps) nogil
'''
Get the current 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
'''
cdef extern int libgamma_crtc_set_gamma_ramps16(libgamma_crtc_state_t *this, libgamma_gamma_ramps16_t ramps) nogil
'''
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
'''
cdef extern int libgamma_crtc_get_gamma_ramps32(libgamma_crtc_state_t *this, libgamma_gamma_ramps32_t *ramps) nogil
'''
Get the current 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
'''
cdef extern int libgamma_crtc_set_gamma_ramps32(libgamma_crtc_state_t *this, libgamma_gamma_ramps32_t ramps) nogil
'''
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
'''
cdef extern int libgamma_crtc_get_gamma_ramps64(libgamma_crtc_state_t *this, libgamma_gamma_ramps64_t *ramps) nogil
'''
Get the current 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
'''
cdef extern int libgamma_crtc_set_gamma_ramps64(libgamma_crtc_state_t *this, libgamma_gamma_ramps64_t ramps) nogil
'''
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
'''
cdef extern int libgamma_crtc_get_gamma_rampsf(libgamma_crtc_state_t *this, libgamma_gamma_rampsf_t *ramps) nogil
'''
Get the current 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
'''
cdef extern int libgamma_crtc_set_gamma_rampsf(libgamma_crtc_state_t *this, libgamma_gamma_rampsf_t ramps) nogil
'''
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
'''
cdef extern int libgamma_crtc_get_gamma_rampsd(libgamma_crtc_state_t *this, libgamma_gamma_rampsd_t *ramps) nogil
'''
Get the current 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
'''
cdef extern int libgamma_crtc_set_gamma_rampsd(libgamma_crtc_state_t *this, libgamma_gamma_rampsd_t ramps) nogil
'''
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
'''
def libgamma_native_list_methods(operation : int) -> list:
'''
List available adjustment methods by their order of preference based on the environment
@param operation Allowed values:
0: Methods that the environment suggests will work, excluding fake
1: Methods that the environment suggests will work, including fake
2: All real non-fake methods
3: All real methods
4: All methods
Other values invoke undefined behaviour
@return :list<int> A list of available adjustment methods
'''
cdef int *methods
cdef size_t buf_size
cdef size_t r
buf_size = 6
methods = <int *>malloc(buf_size * sizeof(size_t))
if methods == NULL:
raise MemoryError()
r = libgamma_list_methods(methods, buf_size, operation)
if r > buf_size:
buf_size = r
free(methods)
methods = <int *>malloc(buf_size * sizeof(size_t))
if methods == NULL:
raise MemoryError()
libgamma_list_methods(methods, buf_size, operation)
rc = []
for i in range(r):
rc.append(methods[i])
free(methods)
return rc
def libgamma_native_is_method_available(method : int) -> int:
'''
Check whether an adjustment method is available, non-existing (invalid) methods will be
identified as not available under the rationale that the library may be out of date
@param method The adjustment method
@return Whether the adjustment method is available
'''
return int(libgamma_is_method_available(<int>method))
def libgamma_native_method_capabilities(method : int) -> tuple:
'''
Return the capabilities of an adjustment method
@param method The adjustment method (display server and protocol)
@return :(int, int) Input parameters for `MethodCapabilities.__init__`
'''
cdef libgamma_method_capabilities_t caps
libgamma_method_capabilities(&caps, <int>method)
booleans = 0
crtc_information = int(caps.crtc_information)
booleans |= (0 if caps.default_site_known == 0 else 1) << 0
booleans |= (0 if caps.multiple_sites == 0 else 1) << 1
booleans |= (0 if caps.multiple_partitions == 0 else 1) << 2
booleans |= (0 if caps.multiple_crtcs == 0 else 1) << 3
booleans |= (0 if caps.partitions_are_graphics_cards == 0 else 1) << 4
booleans |= (0 if caps.site_restore == 0 else 1) << 5
booleans |= (0 if caps.partition_restore == 0 else 1) << 6
booleans |= (0 if caps.crtc_restore == 0 else 1) << 7
booleans |= (0 if caps.identical_gamma_sizes == 0 else 1) << 8
booleans |= (0 if caps.fixed_gamma_size == 0 else 1) << 9
booleans |= (0 if caps.fixed_gamma_depth == 0 else 1) << 10
booleans |= (0 if caps.real == 0 else 1) << 11
booleans |= (0 if caps.fake == 0 else 1) << 12
return (crtc_information, booleans)
def libgamma_native_method_default_site(method : int) -> str:
'''
Return the default site for an adjustment method
@param method The adjustment method (display server and protocol)
@return The default site, `None` if it cannot be determined or
if multiple sites are not supported by the adjustment
method
'''
cdef char *var
cdef bytes bs
var = libgamma_method_default_site(<int>method)
if var is NULL:
return None
bs = var
return bs.decode('utf-8', 'strict')
def libgamma_native_method_default_site_variable(method : int) -> str:
'''
Return the default variable that determines
the default site for an adjustment method
@param method The adjustment method (display server and protocol)
@return The environ variables that is used to determine the
default site. `None` if there is none, that is, if
the method does not support multiple sites.
'''
cdef const char *var
cdef bytes bs
var = libgamma_method_default_site_variable(<int>method)
if var is NULL:
return None
bs = var
return bs.decode('utf-8', 'strict')
def libgamma_native_site_create(method : int, site : str) -> tuple:
'''
Create an allocated site state
@param method The adjustment method (display server and protocol)
@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 :(site:int, partitions:int) First value: The created site, zero on error
Second value: The number of partitions in the site,
on error: the value of the error identifier
provided by this library or `errno`
'''
cdef libgamma_site_state_t *this
cdef char *site_
cdef size_t this_address
this = <libgamma_site_state_t *>malloc(sizeof(libgamma_site_state_t))
if this is NULL:
raise MemoryError()
this_address = <size_t><void *>this
site_ = NULL
if site is not None:
site_bs = site.encode('utf-8') + bytes([0])
site_ = <char *>malloc(len(site_bs) * sizeof(char))
if site_ is None:
free(this)
raise MemoryError()
for i in range(len(site_bs)):
site_[i] = <char>(site_bs[i])
r = int(libgamma_site_initialise(this, <int>method, site_))
if not r == 0:
libgamma_site_free(this)
return (0, int(errno) if r == -1 else r)
return (int(this_address), int(this.partitions_available))
def libgamma_native_site_free(this : int):
'''
Release all resources held by a site state
and free the CRTC state pointer
@param this The site state
'''
cdef size_t this_address
cdef libgamma_site_state_t *this_
this_address = <size_t>this
this_ = <libgamma_site_state_t *><void *>this_address
libgamma_site_free(this_)
def libgamma_native_site_restore(this : int) -> int:
'''
Restore the gamma ramps all CRTC:s with a site to the system settings
@param this The site state
@return Zero on success, otherwise the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef libgamma_site_state_t *this_
this_address = <size_t>this
this_ = <libgamma_site_state_t *><void *>this_address
r = int(libgamma_site_restore(this_))
return int(errno) if r == -1 else r
def libgamma_native_partition_create(site : int, partition : int) -> tuple:
'''
Create an allocated partition state
@param site The site state for the site that the partition belongs to
@param partition The index of the partition within the site
@return :(site:int, partitions:int) First value: The created partition, zero on error
Second value: The number of CRTC:s in the partition,
on error: the value of the error identifier
provided by this library or `errno`
'''
cdef libgamma_partition_state_t *this
cdef libgamma_site_state_t *site_
cdef size_t this_address
cdef size_t site_address
site_address = <size_t>site
site_ = <libgamma_site_state_t *><void *>site_address
this = <libgamma_partition_state_t *>malloc(sizeof(libgamma_partition_state_t))
if this is NULL:
raise MemoryError()
this_address = <size_t><void *>this
r = int(libgamma_partition_initialise(this, site_, <size_t>partition))
if not r == 0:
libgamma_partition_free(this)
return (0, int(errno) if r == -1 else r)
return (int(this_address), int(this.crtcs_available))
def libgamma_native_partition_free(this : int):
'''
Release all resources held by a partition state
and free the partition state pointer
@param this The partition state
'''
cdef size_t this_address
cdef libgamma_partition_state_t *this_
this_address = <size_t>this
this_ = <libgamma_partition_state_t *><void *>this_address
libgamma_partition_free(this_)
def libgamma_native_partition_restore(this : int) -> int:
'''
Restore the gamma ramps all CRTC:s with a partition to the system settings
@param this The partition state
@return Zero on success, otherwise the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef libgamma_partition_state_t *this_
this_address = <size_t>this
this_ = <libgamma_partition_state_t *><void *>this_address
r = int(libgamma_partition_restore(this_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_create(partition : int, crtc : int) -> tuple:
'''
Create an allocated CRTC state
@param partition The partition state for the partition that the CRTC belongs to.
@param crtc The index of the CRTC within the partition
@return :(int, int) First value: The created CRTC, zero on error
Second value: Zero on success, otherwise the value of an error
identifier provided by this library or `errno`
'''
cdef libgamma_crtc_state_t *this
cdef libgamma_partition_state_t *partition_
cdef size_t this_address
cdef size_t partition_address
partition_address = <size_t>partition
partition_ = <libgamma_partition_state_t *><void *>partition_address
this = <libgamma_crtc_state_t *>malloc(sizeof(libgamma_crtc_state_t))
if this is NULL:
raise MemoryError()
this_address = <size_t><void *>this
r = int(libgamma_crtc_initialise(this, partition_, <size_t>crtc))
if not r == 0:
libgamma_crtc_free(this)
return (0, int(errno) if r == -1 else r)
return (int(this_address), 0)
def libgamma_native_crtc_free(this : int):
'''
Release all resources held by a CRTC state
and free the CRTC state pointer
@param this The CRTC state
'''
cdef size_t this_address
cdef libgamma_crtc_state_t *this_
this_address = <size_t>this
this_ = <libgamma_crtc_state_t *><void *>this_address
libgamma_crtc_free(this_)
def libgamma_native_crtc_restore(this : int) -> int:
'''
Restore the gamma ramps for a CRTC to the system settings for that CRTC
@param this The CRTC state
@return Zero on success, otherwise the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef libgamma_crtc_state_t *this_
this_address = <size_t>this
this_ = <libgamma_crtc_state_t *><void *>this_address
r = int(libgamma_crtc_restore(this_))
return int(errno) if r == -1 else r
def libgamma_native_get_crtc_information(crtc : int, fields : int) -> tuple:
'''
Read information about a CRTC
@param crtc The state of the CRTC whose information should be read
@param field OR:ed identifiers for the information about the CRTC that should be read
@return :(list, :int) First value: Input parametrs for `CRTCInformation.__init__`
Second value: Zero on success, -1 on error; on error refer to
the error reports in the return
'''
cdef libgamma_crtc_information_t info
cdef size_t crtc_address
cdef libgamma_crtc_state_t *crtc_
cdef bytes bs
crtc_address = <size_t>crtc
crtc_ = <libgamma_crtc_state_t *><void *>crtc_address
r = int(libgamma_get_crtc_information(&info, crtc_, <int32_t>fields))
rc = []
connector_name = None
if info.connector_name is not NULL:
bs = info.connector_name
connector_name = bs.decode('utf-8', 'strict')
edid = None
if info.edid is not NULL:
bs = info.edid[:info.edid_length]
edid = bs
rc.append(edid)
rc.append(int(info.edid_error))
rc.append(int(info.width_mm))
rc.append(int(info.width_mm_error))
rc.append(int(info.height_mm))
rc.append(int(info.height_mm_error))
rc.append(int(info.width_mm_edid))
rc.append(int(info.width_mm_edid_error))
rc.append(int(info.height_mm_edid))
rc.append(int(info.height_mm_edid_error))
rc.append(int(info.red_gamma_size))
rc.append(int(info.green_gamma_size))
rc.append(int(info.blue_gamma_size))
rc.append(int(info.gamma_size_error))
rc.append(int(info.gamma_depth))
rc.append(int(info.gamma_depth_error))
rc.append(int(info.gamma_support))
rc.append(int(info.gamma_support_error))
rc.append(int(info.subpixel_order))
rc.append(int(info.subpixel_order_error))
rc.append(int(info.active))
rc.append(int(info.active_error))
rc.append(connector_name)
rc.append(int(info.connector_name_error))
rc.append(int(info.connector_type))
rc.append(int(info.connector_type_error))
rc.append(float(info.gamma_red))
rc.append(float(info.gamma_green))
rc.append(float(info.gamma_blue))
rc.append(int(info.gamma_error))
libgamma_crtc_information_destroy(&info)
return (rc, r)
def libgamma_native_crtc_get_gamma_ramps8(this : int, ramps : int) -> int:
'''
Get the current gamma ramps for a CRTC, 8-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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps8_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps8_t *><void *>ramps_address
r = int(libgamma_crtc_get_gamma_ramps8(this_, ramps_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_set_gamma_ramps8(this : int, ramps : int) -> int:
'''
Set the gamma ramps for a CRTC, 8-bit gamma-depth version
@param this The CRTC state
@param ramps The gamma ramps to apply
@return Zero on success, otherwise the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps8_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps8_t *><void *>ramps_address
r = int(libgamma_crtc_set_gamma_ramps8(this_, ramps_[0]))
return int(errno) if r == -1 else r
def libgamma_native_crtc_get_gamma_ramps16(this : int, ramps : int) -> int:
'''
Get the current 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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps16_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps16_t *><void *>ramps_address
r = int(libgamma_crtc_get_gamma_ramps16(this_, ramps_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_set_gamma_ramps16(this : int, ramps : int) -> int:
'''
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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps16_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps16_t *><void *>ramps_address
r = int(libgamma_crtc_set_gamma_ramps16(this_, ramps_[0]))
return int(errno) if r == -1 else r
def libgamma_native_crtc_get_gamma_ramps32(this : int, ramps : int) -> int:
'''
Get the current 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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps32_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps32_t *><void *>ramps_address
r = int(libgamma_crtc_get_gamma_ramps32(this_, ramps_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_set_gamma_ramps32(this : int, ramps : int) -> int:
'''
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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps32_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps32_t *><void *>ramps_address
r = int(libgamma_crtc_set_gamma_ramps32(this_, ramps_[0]))
return int(errno) if r == -1 else r
def libgamma_native_crtc_get_gamma_ramps64(this : int, ramps : int) -> int:
'''
Get the current 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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_ramps64_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps64_t *><void *>ramps_address
r = int(libgamma_crtc_get_gamma_ramps64(this_, ramps_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_set_gamma_ramps64(this : int, ramps : int) -> int:
'''
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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t * this_
cdef libgamma_gamma_ramps64_t * ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_ramps64_t *><void *>ramps_address
r = int(libgamma_crtc_set_gamma_ramps64(this_, ramps_[0]))
return int(errno) if r == -1 else r
def libgamma_native_crtc_get_gamma_rampsf(this : int, ramps : int) -> int:
'''
Get the current 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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_rampsf_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_rampsf_t *><void *>ramps_address
r = int(libgamma_crtc_get_gamma_rampsf(this_, ramps_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_set_gamma_rampsf(this : int, ramps : int) -> int:
'''
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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_rampsf_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_rampsf_t *><void *>ramps_address
r = int(libgamma_crtc_set_gamma_rampsf(this_, ramps_[0]))
return int(errno) if r == -1 else r
def libgamma_native_crtc_get_gamma_rampsd(this : int, ramps : int) -> int:
'''
Get the current 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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_rampsd_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_rampsd_t *><void *>ramps_address
r = int(libgamma_crtc_get_gamma_rampsd(this_, ramps_))
return int(errno) if r == -1 else r
def libgamma_native_crtc_set_gamma_rampsd(this : int, ramps : int) -> int:
'''
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 the value of an error
identifier provided by this library or `errno`
'''
cdef size_t this_address
cdef size_t ramps_address
cdef libgamma_crtc_state_t *this_
cdef libgamma_gamma_rampsd_t *ramps_
this_address = <size_t>this
ramps_address = <size_t>ramps
this_ = <libgamma_crtc_state_t *><void *>this_address
ramps_ = <libgamma_gamma_rampsd_t *><void *>ramps_address
r = int(libgamma_crtc_set_gamma_rampsd(this_, ramps_[0]))
return int(errno) if r == -1 else r
