Attachment 26160 Details for Bug 20963 – backlight.py

backlight.py

backlight.py (text/plain), 2.04 KB, created by jeromepoulin@gmail.com on 2009-05-24 00:33:19 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: jeromepoulin@gmail.com

Created: 2009-05-24 00:33:19 UTC

Size: 2.04 KB

patch

obsolete

>#!/usr/bin/env python
>
>import getopt, sys, os, struct, time;
>
>def setBL(param):
>	fBacklight.seek(iBLO);
>	fBacklight.write(struct.pack("B", param));
>	fBacklight.flush();
>
>def printUsage():
>	print "Usage: %s [options]" % (sys.argv[0],)
>	print """Where options are:
>-h, --help		Display this usage message.
>-s, --set		Set the backlight at a specific percentage.
>-i, --inc		Increase backlight from current setting.
>-d, --dec		Decrease backlight from current setting.
>-g, --get		Get the current backlight in percent.
>-t, --time		Specifies the time in millisecond for the fade in/out.
>
>--gethex		Gets the backlight setting in hex.
>--sethex		Sets the backlight setting in hex.
>
>All percentage are float numbers and may contain decimals."""
>	sys.exit(2);
>
>if len(sys.argv) < 2:
>	printUsage();
>
>sLongOpts = [
>	"help",
>	"set=",
>	"inc=",
>	"dec=",
>	"get",
>	"time=",
>	"gethex",
>	"sethex=",
>];
>
>sArgs = getopt.getopt(sys.argv[1:], "hs:i:d:gt:", sLongOpts)[0];
>
>iBLO = 0xF4; # Backlight Offset
>fBacklight = file("/sys/bus/pci/devices/0000:00:02.0/config", 'r+');
>fBacklight.seek(iBLO);
>iCurBL = struct.unpack("B", fBacklight.read(1))[0];
>iCurBLP = iCurBL * 100 / 255;
>iSetting = 100;
>iFade = 0;
>
>for (arg, param) in sArgs:
>	arg = arg.lower();
>	if arg == "--help" or arg == "-h":
>		printUsage();
>	if arg == "--get" or arg == "-g":
>		print "%d" % (iCurBLP,)
>		sys.exit(0);
>	if arg == "--set" or arg == "-s":
>		iSetting = float(param);
>	if arg == "--inc" or arg == "-i":
>		iSetting = float(param) + iCurBLP
>	if arg == "--dec" or arg == "-d":
>		iSetting = float(-param) + iCurBLP
>	if arg == "--time" or arg == "-t":
>		iFade = float(param)/1000;
>	if arg == "--sethex":
>		setBL(int(param));
>		sys.exit(0);
>	if arg == "--gethex":
>		print "%d" % (iCurBL,);
>		sys.exit(0);
>
>iBL = int(iSetting * 255 / 100);
>
>if iBL > 255: iBL = 255;
>if iBL < 0: iBL = 0;
>
>iUD = 1;
>if iCurBL > iBL: iUD = -1;
>
>try:
>	iTime = iFade / abs(iCurBL - iBL);
>except ZeroDivisionError:
>	iFade = 0;
>
>try:
>	if iFade > 0:
>		for i in range(iCurBL, iBL, iUD):
>			setBL(i);
>			time.sleep(iTime);
>except: pass;
>
>setBL(iBL);
>fBacklight.close();

Actions: View

Attachments on bug 20963: 24394 | 26160 | 26206 | 27840 | 27867 | 27869 | 27918 | 27937 | 27941 | 28019 | 28027 | 28028 | 28029 | 28030 | 28032 | 28034 | 28242 | 28282 | 28332 | 28345 | 28357 | 28358

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.