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#!/usr/bin/env python3
# Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
from subprocess import Popen, PIPE
from curve import *
# /usr/lib
LIBDIR = 'bin'
sys.path.append(LIBDIR)
# /usr/libexec
LIBEXECDIR = 'bin'
randr_opened = None
vidmode_opened = None
def translate_to_integers():
'''
Translate the curves from float to integer
@param :(list<int>, list<int>, list<int>) The red curve, the green curve and,
the blue curve mapped to integers
'''
R_curve, G_curve, B_curve = [0] * i_size, [0] * i_size, [0] * i_size
for i_curve, o_curve in ((r_curve, R_curve), (g_curve, G_curve), (b_curve, B_curve)):
for i in range(i_size):
o_curve[i] = int(i_curve[i] * (o_size - 1) + 0.5)
if clip_result:
o_curve[i] = min(max(0, o_curve[i]), (o_size - 1))
return (R_curve, G_curve, B_curve)
def close_c_bindings():
'''
Close all C bindings and let them free resources and close connections
'''
global randr_opened, vidmode_opened
if randr_opened is not None:
from blueshift_randr import randr_close
randr_opened = None
randr_close()
if vidmode_opened is not None:
from blueshift_vidmode import vidmode_close
vidmode_opened = None
vidmode_close()
def randr_get(crtc = 0, screen = 0):
'''
Gets the current colour curves using the X11 extension randr
@param crtc:int The CRTC of the monitor to read from
@param screen:int The screen that the monitor belong to
@return :()→void Function to invoke to apply the curves that was used when this function was invoked
'''
from blueshift_randr import randr_open, randr_read, randr_close
global randr_opened
if (randr_opened is None) or not (randr_opened == screen):
if randr_opened is not None:
randr_close()
if randr_open(screen) == 0:
randr_opened = screen
else:
sys.exit(1)
(r, g, b) = randr_read(crtc)
r = [y / 65535 for y in r]
g = [y / 65535 for y in g]
b = [y / 65535 for y in b]
def fcurve(R_curve, G_curve, B_curve):
for curve, cur in curves(R_curve, G_curve, B_curve):
for i in range(i_size):
y = int(curve[i] * (len(cur) - 1) + 0.5)
y = min(max(0, y), len(cur) - 1)
curve[i] = cur[y]
return lambda : fcurve(r, g, b)
def vidmode_get(crtc = 0, screen = 0):
'''
Gets the current colour curves using the X11 extension vidmode
@param crtc:int The CRTC of the monitor to read from
@param screen:int The screen that the monitor belong to
@return :()→void Function to invoke to apply the curves that was used when this function was invoked
'''
from blueshift_vidmode import vidmode_open, vidmode_read, vidmode_close
global vidmode_opened
if (vidmode_opened is None) or not (vidmode_opened == screen):
if vidmode_opened is not None:
vidmode_close()
if vidmode_open(screen) == 0:
vidmode_opened = screen
else:
sys.exit(1)
(r, g, b) = vidmode_read(crtc)
r = [y / 65535 for y in r]
g = [y / 65535 for y in g]
b = [y / 65535 for y in b]
def fcurve(R_curve, G_curve, B_curve):
for curve, cur in curves(R_curve, G_curve, B_curve):
for i in range(i_size):
y = int(curve[i] * (len(cur) - 1) + 0.5)
y = min(max(0, y), len(cur) - 1)
curve[i] = cur[y]
return lambda : fcurve(r, g, b)
def randr(*crtcs, screen = 0):
'''
Applies colour curves using the X11 extension randr
@param crtcs:*int The CRT controllers to use, all are used if none are specified
@param screen:int The screen that the monitors belong to
'''
from blueshift_randr import randr_open, randr_apply, randr_close
global randr_opened
crtcs = sum([1 << i for i in list(crtcs)])
if crtcs == 0:
crtcs = (1 << 64) - 1
(R_curve, G_curve, B_curve) = translate_to_integers()
if (randr_opened is None) or not (randr_opened == screen):
if randr_opened is not None:
randr_close()
if randr_open(screen) == 0:
randr_opened = screen
else:
sys.exit(1)
try:
if not randr_apply(crtcs, R_curve, G_curve, B_curve) == 0:
sys.exit(1)
except OverflowError:
pass # Happens on exit by TERM signal
def vidmode(*crtcs, screen = 0):
'''
Applies colour curves using the X11 extension vidmode
@param crtcs:*int The CRT controllers to use, all are used if none are specified
@param screen:int The screen that the monitors belong to
'''
from blueshift_vidmode import vidmode_open, vidmode_apply, vidmode_close
global vidmode_opened
crtcs = sum([1 << i for i in list(crtcs)])
if crtcs == 0:
crtcs = (1 << 64) - 1
(R_curve, G_curve, B_curve) = translate_to_integers()
if (vidmode_opened is None) or not (vidmode_opened == screen):
if vidmode_opened is not None:
vidmode_close()
if vidmode_open(screen) == 0:
vidmode_opened = screen
else:
sys.exit(1)
try:
if not vidmode_apply(crtcs, R_curve, G_curve, B_curve) == 0:
sys.exit(1)
except OverflowError:
pass # Happens on exit by TERM signal
def print_curves(*crtcs, screen = 0):
'''
Prints the curves to stdout
@param crtcs:*int Dummy parameter
@param screen:int Dummy parameter
'''
(R_curve, G_curve, B_curve) = translate_to_integers()
print(R_curve)
print(G_curve)
print(B_curve)
def list_monitors():
process = Popen([LIBEXECDIR + "/blueshift_idcrtc"], stdout = PIPE)
lines = process.communicate()[0].decode('utf-8', 'error').split('\n')
lines = [line.strip() for line in lines]
screens, screen, output = None, None, None
for line in lines:
if line.startswith('Screen count: '):
screens = [None] * int(line[len('Screen count: '):])
elif line.startswith('Screen: '):
screen_i = int(line[len('Screen: '):])
screen = {}
screens[screen_i] = screen
elif line.startswith('CRTC count: '):
screen['crtc'] = int(line[len('CRTC count: '):])
elif line.startswith('Output count: '):
screen['output'] = [None] * int(line[len('Output count: '):])
elif line.startswith('Output: '):
output_i = int(line[len('Output: '):])
output = {'name' : None, 'connected' : False, 'width' : None, 'height' : None, 'crtc' : None}
screen['output'][output_i] = output
elif line.startswith('Name: '):
output['name'] = line[len('Name: '):]
elif line.startswith('Connection: '):
output['connected'] = line[len('Connection: '):] == 'connected'
elif line.startswith('Size: '):
width, height = [int(x) for x in line[len('Size: '):].split(' ')]
output['width'] = width
output['height'] = height
elif line.startswith('CRTC: '):
output['crtc'] = int(line[len('CRTC: '):])
return screens
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