# -*- 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 <http://www.gnu.org/licenses/>.
'''
cimport cython
from libc.stdint cimport *
from libc.stdlib cimport malloc
from libc.stddef cimport size_t
from libc.errno cimport errno
cdef extern from "include-libgamma.h":
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 int libgamma_gamma_ramps8_initialise(libgamma_gamma_ramps8_t* this)
'''
Initialise a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
The input must have `red_size`, `green_size` and `blue_size` set to the
sizes of the gamma ramps that should be allocated.
@param this The gamma ramps.
@return Zero on success, -1 on allocation error, `errno` will be set accordingly.
'''
cdef extern void libgamma_gamma_ramps8_free(libgamma_gamma_ramps8_t* this)
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_gamma_ramps8_initialise` or otherwise
initialises in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef extern int libgamma_gamma_ramps16_initialise(libgamma_gamma_ramps16_t* this)
'''
Initialise a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
The input must have `red_size`, `green_size` and `blue_size` set to the
sizes of the gamma ramps that should be allocated.
@param this The gamma ramps.
@return Zero on success, -1 on allocation error, `errno` will be set accordingly.
'''
cdef extern void libgamma_gamma_ramps16_free(libgamma_gamma_ramps16_t* this)
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_gamma_ramps16_initialise` or otherwise
initialises in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef extern int libgamma_gamma_ramps32_initialise(libgamma_gamma_ramps32_t* this)
'''
Initialise a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
The input must have `red_size`, `green_size` and `blue_size` set to the
sizes of the gamma ramps that should be allocated.
@param this The gamma ramps.
@return Zero on success, -1 on allocation error, `errno` will be set accordingly.
'''
cdef extern void libgamma_gamma_ramps32_free(libgamma_gamma_ramps32_t* this)
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_gamma_ramps32_initialise` or otherwise
initialises in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef extern int libgamma_gamma_ramps64_initialise(libgamma_gamma_ramps64_t* this)
'''
Initialise a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
The input must have `red_size`, `green_size` and `blue_size` set to the
sizes of the gamma ramps that should be allocated.
@param this The gamma ramps.
@return Zero on success, -1 on allocation error, `errno` will be set accordingly.
'''
cdef extern void libgamma_gamma_ramps64_free(libgamma_gamma_ramps64_t* this)
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_gamma_ramps64_initialise` or otherwise
initialises in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef extern int libgamma_gamma_rampsf_initialise(libgamma_gamma_rampsf_t* this)
'''
Initialise a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
The input must have `red_size`, `green_size` and `blue_size` set to the
sizes of the gamma ramps that should be allocated.
@param this The gamma ramps.
@return Zero on success, -1 on allocation error, `errno` will be set accordingly.
'''
cdef extern void libgamma_gamma_rampsf_free(libgamma_gamma_rampsf_t* this)
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_gamma_rampsf_initialise` or otherwise
initialises in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef extern int libgamma_gamma_rampsd_initialise(libgamma_gamma_rampsd_t* this)
'''
Initialise a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
The input must have `red_size`, `green_size` and `blue_size` set to the
sizes of the gamma ramps that should be allocated.
@param this The gamma ramps
@return Zero on success, -1 on allocation error, `errno` will be set accordingly.
'''
cdef extern void libgamma_gamma_rampsd_free(libgamma_gamma_rampsd_t* this)
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_gamma_rampsd_initialise` or otherwise
initialises in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
def libgamma_native_gamma_ramps8_create(red_size : int, green_size : int, blue_size : int):
'''
Create a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
@param red_size The size of the gamma ramp for the red channel
@param green_size The size of the gamma ramp for the green channel
@param blue_size The size of the gamma ramp for the blue channel
@return :(int){4}|int The tuple that describes the created data, `errno` on failure:
Element 1: The address of the gamma ramp structure
Element 2: The address of the gamma ramp for the red channel
Element 3: The address of the gamma ramp for the green channel
Element 4: The address of the gamma ramp for the blue channel
'''
cdef void* allocation = malloc(sizeof(libgamma_gamma_ramps8_t))
cdef libgamma_gamma_ramps8_t* item = <libgamma_gamma_ramps8_t*>allocation
cdef size_t red, green, blue
if item is NULL:
return int(errno)
item.red_size = red_size
item.green_size = green_size
item.blue_size = blue_size
if libgamma_gamma_ramps8_initialise(item) < 0:
return int(errno)
red = <size_t><void*>(item.red)
green = <size_t><void*>(item.green)
blue = <size_t><void*>(item.blue)
return (int(<size_t>allocation), int(red), int(green), int(blue))
def libgamma_native_gamma_ramps8_free(this : int):
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_native_gamma_ramps8_create` or otherwise
created in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef void* address = <void*><size_t>this
cdef libgamma_gamma_ramps8_t* item = <libgamma_gamma_ramps8_t*>address
libgamma_gamma_ramps8_free(item)
def libgamma_native_gamma_ramps8_get(this : int, index : int) -> int:
'''
Read a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@return The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint8_t* ramp = <uint8_t*>address
return int(ramp[<size_t>index])
def libgamma_native_gamma_ramps8_set(this : int, index : int, value : int):
'''
Modify a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@param value The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint8_t* ramp = <uint8_t*>address
ramp[<size_t>index] = <uint8_t>value
def libgamma_native_gamma_ramps16_create(red_size : int, green_size : int, blue_size : int):
'''
Create a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
@param red_size The size of the gamma ramp for the red channel
@param green_size The size of the gamma ramp for the green channel
@param blue_size The size of the gamma ramp for the blue channel
@return :(int){4}|int The tuple that describes the created data, `errno` on failure:
Element 1: The address of the gamma ramp structure
Element 2: The address of the gamma ramp for the red channel
Element 3: The address of the gamma ramp for the green channel
Element 4: The address of the gamma ramp for the blue channel
'''
cdef void* allocation = malloc(sizeof(libgamma_gamma_ramps16_t))
cdef libgamma_gamma_ramps16_t* item = <libgamma_gamma_ramps16_t*>allocation
cdef size_t red, green, blue
if item is NULL:
return int(errno)
item.red_size = red_size
item.green_size = green_size
item.blue_size = blue_size
if libgamma_gamma_ramps16_initialise(item) < 0:
return int(errno)
red = <size_t><void*>(item.red)
green = <size_t><void*>(item.green)
blue = <size_t><void*>(item.blue)
return (int(<size_t>allocation), int(red), int(green), int(blue))
def libgamma_native_gamma_ramps16_free(this : int):
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_native_gamma_ramps16_create` or otherwise
created in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef void* address = <void*><size_t>this
cdef libgamma_gamma_ramps16_t* item = <libgamma_gamma_ramps16_t*>address
libgamma_gamma_ramps16_free(item)
def libgamma_native_gamma_ramps16_get(this : int, index : int) -> int:
'''
Read a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@return The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint16_t* ramp = <uint16_t*>address
return int(ramp[<size_t>index])
def libgamma_native_gamma_ramps16_set(this : int, index : int, value : int):
'''
Modify a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@param value The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint16_t* ramp = <uint16_t*>address
ramp[<size_t>index] = <uint16_t>value
def libgamma_native_gamma_ramps32_create(red_size : int, green_size : int, blue_size : int):
'''
Create a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
@param red_size The size of the gamma ramp for the red channel
@param green_size The size of the gamma ramp for the green channel
@param blue_size The size of the gamma ramp for the blue channel
@return :(int){4}|int The tuple that describes the created data, `errno` on failure:
Element 1: The address of the gamma ramp structure
Element 2: The address of the gamma ramp for the red channel
Element 3: The address of the gamma ramp for the green channel
Element 4: The address of the gamma ramp for the blue channel
'''
cdef void* allocation = malloc(sizeof(libgamma_gamma_ramps32_t))
cdef libgamma_gamma_ramps32_t* item = <libgamma_gamma_ramps32_t*>allocation
cdef size_t red, green, blue
if item is NULL:
return int(errno)
item.red_size = red_size
item.green_size = green_size
item.blue_size = blue_size
if libgamma_gamma_ramps32_initialise(item) < 0:
return int(errno)
red = <size_t><void*>(item.red)
green = <size_t><void*>(item.green)
blue = <size_t><void*>(item.blue)
return (int(<size_t>allocation), int(red), int(green), int(blue))
def libgamma_native_gamma_ramps32_free(this : int):
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_native_gamma_ramps32_create` or otherwise
created in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef void* address = <void*><size_t>this
cdef libgamma_gamma_ramps32_t* item = <libgamma_gamma_ramps32_t*>address
libgamma_gamma_ramps32_free(item)
def libgamma_native_gamma_ramps32_get(this : int, index : int) -> int:
'''
Read a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@return The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint32_t* ramp = <uint32_t*>address
return int(ramp[<size_t>index])
def libgamma_native_gamma_ramps32_set(this : int, index : int, value : int):
'''
Modify a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@param value The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint32_t* ramp = <uint32_t*>address
ramp[<size_t>index] = <uint32_t>value
def libgamma_native_gamma_ramps64_create(red_size : int, green_size : int, blue_size : int):
'''
Create a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
@param red_size The size of the gamma ramp for the red channel
@param green_size The size of the gamma ramp for the green channel
@param blue_size The size of the gamma ramp for the blue channel
@return :(int){4}|int The tuple that describes the created data, `errno` on failure:
Element 1: The address of the gamma ramp structure
Element 2: The address of the gamma ramp for the red channel
Element 3: The address of the gamma ramp for the green channel
Element 4: The address of the gamma ramp for the blue channel
'''
cdef void* allocation = malloc(sizeof(libgamma_gamma_ramps64_t))
cdef libgamma_gamma_ramps64_t* item = <libgamma_gamma_ramps64_t*>allocation
cdef size_t red, green, blue
if item is NULL:
return int(errno)
item.red_size = red_size
item.green_size = green_size
item.blue_size = blue_size
if libgamma_gamma_ramps64_initialise(item) < 0:
return int(errno)
red = <size_t><void*>(item.red)
green = <size_t><void*>(item.green)
blue = <size_t><void*>(item.blue)
return (int(<size_t>allocation), int(red), int(green), int(blue))
def libgamma_native_gamma_ramps64_free(this : int):
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_native_gamma_ramps64_create` or otherwise
created in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef void* address = <void*><size_t>this
cdef libgamma_gamma_ramps64_t* item = <libgamma_gamma_ramps64_t*>address
libgamma_gamma_ramps64_free(item)
def libgamma_native_gamma_ramps64_get(this : int, index : int) -> int:
'''
Read a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@return The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint64_t* ramp = <uint64_t*>address
return int(ramp[<size_t>index])
def libgamma_native_gamma_ramps64_set(this : int, index : int, value : int):
'''
Modify a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@param value The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef uint64_t* ramp = <uint64_t*>address
ramp[<size_t>index] = <uint64_t>value
def libgamma_native_gamma_rampsf_create(red_size : int, green_size : int, blue_size : int):
'''
Create a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
@param red_size The size of the gamma ramp for the red channel
@param green_size The size of the gamma ramp for the green channel
@param blue_size The size of the gamma ramp for the blue channel
@return :(int){4}|int The tuple that describes the created data, `errno` on failure:
Element 1: The address of the gamma ramp structure
Element 2: The address of the gamma ramp for the red channel
Element 3: The address of the gamma ramp for the green channel
Element 4: The address of the gamma ramp for the blue channel
'''
cdef void* allocation = malloc(sizeof(libgamma_gamma_rampsf_t))
cdef libgamma_gamma_rampsf_t* item = <libgamma_gamma_rampsf_t*>allocation
cdef size_t red, green, blue
if item is NULL:
return int(errno)
item.red_size = red_size
item.green_size = green_size
item.blue_size = blue_size
if libgamma_gamma_rampsf_initialise(item) < 0:
return int(errno)
red = <size_t><void*>(item.red)
green = <size_t><void*>(item.green)
blue = <size_t><void*>(item.blue)
return (int(<size_t>allocation), int(red), int(green), int(blue))
def libgamma_native_gamma_rampsf_free(this : int):
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_native_gamma_rampsf_create` or otherwise
created in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef void* address = <void*><size_t>this
cdef libgamma_gamma_rampsf_t* item = <libgamma_gamma_rampsf_t*>address
libgamma_gamma_rampsf_free(item)
def libgamma_native_gamma_rampsf_get(this : int, index : int) -> float:
'''
Read a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@return The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef float* ramp = <float*>address
return float(ramp[<size_t>index])
def libgamma_native_gamma_rampsf_set(this : int, index : int, value : float):
'''
Modify a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@param value The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef float* ramp = <float*>address
ramp[<size_t>index] = <float>value
def libgamma_native_gamma_rampsd_create(red_size : int, green_size : int, blue_size : int):
'''
Create a gamma ramp in the proper way that allows all adjustment
methods to read from and write to it without causing segmentation violation.
@param red_size The size of the gamma ramp for the red channel
@param green_size The size of the gamma ramp for the green channel
@param blue_size The size of the gamma ramp for the blue channel
@return :(int){4}|int The tuple that describes the created data, `errno` on failure:
Element 1: The address of the gamma ramp structure
Element 2: The address of the gamma ramp for the red channel
Element 3: The address of the gamma ramp for the green channel
Element 4: The address of the gamma ramp for the blue channel
'''
cdef void* allocation = malloc(sizeof(libgamma_gamma_rampsd_t))
cdef libgamma_gamma_rampsd_t* item = <libgamma_gamma_rampsd_t*>allocation
cdef size_t red, green, blue
if item is NULL:
return int(errno)
item.red_size = red_size
item.green_size = green_size
item.blue_size = blue_size
if libgamma_gamma_rampsd_initialise(item) < 0:
return int(errno)
red = <size_t><void*>(item.red)
green = <size_t><void*>(item.green)
blue = <size_t><void*>(item.blue)
return (int(<size_t>allocation), int(red), int(green), int(blue))
def libgamma_native_gamma_rampsd_free(this : int):
'''
Release resources that are held by a gamma ramp strcuture that
has been allocated by `libgamma_native_gamma_rampsd_create` or otherwise
created in the proper manner, as well as release the pointer
to the structure.
@param this The gamma ramps.
'''
cdef void* address = <void*><size_t>this
cdef libgamma_gamma_rampsd_t* item = <libgamma_gamma_rampsd_t*>address
libgamma_gamma_rampsd_free(item)
def libgamma_native_gamma_rampsd_get(this : int, index : int) -> float:
'''
Read a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@return The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef double* ramp = <double*>address
return float(ramp[<size_t>index])
def libgamma_native_gamma_rampsd_set(this : int, index : int, value : float):
'''
Modify a stop in a gamma ramp.
@param this The gamma ramp.
@param index The index of the gamma ramp stop.
@param value The value of the gamma ramp stop.
'''
cdef void* address = <void*><size_t>this
cdef double* ramp = <double*>address
ramp[<size_t>index] = <double>value
