/usr/share/pyshared/libavg/avg_showcamera.py is in python-libavg 1.7.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# libavg - Media Playback Engine.
# Copyright (C) 2003-2011 Ulrich von Zadow
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Current versions can be found at www.libavg.de
#
import optparse
import time
from libavg import avg
from libavg import parsecamargs
def checkCamera():
if not(camNode.isAvailable()):
Log.trace(Log.APP, "Could not open camera")
exit(1)
def onKey(event):
def addWhitebalance(du = 0, dv = 0):
camNode.setWhitebalance(camNode.getWhitebalanceU() + du,
camNode.getWhitebalanceV() + dv)
print "u:", camNode.getWhitebalanceU(), "v:", camNode.getWhitebalanceV()
def addGain(gain):
camNode.gain += gain
print "gain:", camNode.gain
def addShutter(shutter):
camNode.shutter += shutter
print "shutter:", camNode.shutter
if event.keystring == "w":
print "Setting Whitebalance"
camNode.doOneShotWhitebalance()
elif event.keystring == "1":
addWhitebalance(du = -1)
elif event.keystring == "2":
addWhitebalance(du = 1)
elif event.keystring == "3":
addWhitebalance(dv = -1)
elif event.keystring == "4":
addWhitebalance(dv = 1)
elif event.keystring == "s":
print "Saving camera image to camimage.png"
camNode.getBitmap().save("camimage.png")
elif event.keystring == "left":
addShutter(shutter = -1)
elif event.keystring == "right":
addShutter(shutter = 1)
elif event.keystring == "up":
addGain(gain = 1)
elif event.keystring == "down":
addGain(gain = -1)
curFrame = 0
def updateFrameDisplay(node):
global curFrame
curFrame += 1
node.text = "%(cam)d/%(player)d"%{"cam":camNode.framenum, "player":curFrame}
parser = optparse.OptionParser()
parsecamargs.addOptions(parser)
parser.add_option("-l", "--dump", dest="dump", action="store_true", default=False,
help="dump a list of detected cameras")
parser.add_option("-s", "--noinfo", dest="noinfo", action="store_true", default=False,
help="don't show any info overlayed on the screen")
parser.add_option("-r", "--resetbus", dest="resetbus", action="store_true", default=False,
help="reset the firewire bus.")
(options, args) = parser.parse_args()
if options.driver is None and not options.dump and not options.resetbus:
parser.print_help()
print
print "Keys available when image is being displayed:"
print " w: Execute whitebalance."
print " 1/2: Decrease/Increase whitebalance u."
print " 3/4: Decrease/Increase whitebalance v."
print " s: Take screenshot."
print
print "ERROR: at least '--driver', '--dump' or '--resetbus' options must be specified"
exit()
optdict = {}
for attr in dir(options):
if attr[0] != '_':
optdict[attr] = eval("options.%s" %attr)
Log = avg.Logger.get()
Player = avg.Player.get()
Player.loadString("""
<?xml version="1.0"?>
<!DOCTYPE avg SYSTEM "../../doc/avg.dtd">
<avg width="%(width)d" height="%(height)d">
</avg>
""" %optdict)
Player.getRootNode().setEventHandler(avg.KEYDOWN, avg.NONE, onKey)
if options.dump:
avg.CameraNode.dumpCameras()
exit(0)
if options.resetbus:
Log.trace(Log.APP, "Resetting firewire bus.")
avg.CameraNode.resetFirewireBus()
time.sleep(1)
if not options.driver:
exit(0)
Log.trace(Log.APP, "Creating camera:")
Log.trace(Log.APP, "driver=%(driver)s device=%(device)s" %optdict)
Log.trace(Log.APP, "width=%(width)d height=%(height)d pixelformat=%(pixelFormat)s"
%optdict)
Log.trace(Log.APP, "unit=%(unit)d framerate=%(framerate)d fw800=%(fw800)s" %optdict)
camNode = Player.createNode("camera",
{"driver": options.driver, "device": options.device, "unit": options.unit,
"fw800": options.fw800,
"capturewidth": options.width, "captureheight": options.height,
"pixelformat": options.pixelFormat, "framerate": options.framerate,
"width": options.width, "height": options.height})
Player.getRootNode().appendChild(camNode)
if not options.noinfo:
infoText = "Driver=%(driver)s (dev=%(device)s unit=%(unit)d) %(width)dx%(height)d@%(framerate)f" %optdict
avg.WordsNode(text=infoText, color="ff3333", pos=(5,5), fontsize=14,
parent=Player.getRootNode())
frameText = avg.WordsNode(color="ff3333", pos=(5,25), fontsize=14,
parent=Player.getRootNode())
Player.setOnFrameHandler(lambda:updateFrameDisplay(frameText))
camNode.play()
Player.setTimeout(100, checkCamera)
Player.play()
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