/usr/bin/avg_showcamera is in python-libavg 1.8.0-1.
This file is owned by root:root, with mode 0o755.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | #! /usr/bin/python
# -*- coding: utf-8 -*-
# libavg - Media Playback Engine.
# Copyright (C) 2003-2014 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 time
from libavg import avg, player
from libavg import parsecamargs
from libavg import app
usage = """%prog [options]
avg_showcamera.py shows the images captured by a camera attached to the
system. Its main use is to find out which parameters - device names,
image formats, framerates, etc. can be used with the camera(s)."""
class ShowCamera(app.MainDiv):
def onArgvParserCreated(self, parser):
parser.set_usage(usage)
parsecamargs.addOptions(parser)
parser.add_option("-l", "--list", dest="list",
action="store_true", default=False,
help="lists informations about 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")
def onArgvParsed(self, options, args, parser):
if options.list:
infoList = list()
infoList = avg.CameraNode.getCamerasInfos()
if (len(infoList) <= 0):
print "No camera available!"
for info in infoList:
print ""
print "##################",info.driver,"##################"
print "Device ID:", info.deviceID
print ""
print "----------------- FORMATS ------------------"
formatsList = list()
formatsList = info.imageFormats
for format in formatsList:
print "++++"
print "Pixelformat:", format.pixelFormat
print "Resolution:", format.size
print "Framerates: |",
framerateList = list()
framerateList = format.framerates
for framerate in framerateList:
print framerate, "|",
print ""
print ""
print "----------------- CONTROLS -----------------"
controlsList = list()
controlsList = info.controls
for control in controlsList:
print "++++", control.controlName
print "Min:" , control.min, "| Max:", control.max,
print "| Default:", control.default
print ""
exit(0)
if options.resetbus:
avg.logger.info("Resetting firewire bus.")
avg.CameraNode.resetFirewireBus()
time.sleep(1)
if not options.driver:
exit(0)
if options.driver is None and not options.list and not options.resetbus:
parser.print_help()
print
print "ERROR: at least '--driver', '--list' or '--resetbus' options " \
"must be specified"
exit(1)
self.optdict = {}
for attr in dir(options):
if attr[0] != '_':
self.optdict[attr] = eval("options.%s" %attr)
self.settings.set("app_resolution", "%dx%d" %(options.width, options.height))
def onInit(self):
self.curFrame = 0
avg.logger.info("Creating camera:")
avg.logger.info("driver=%(driver)s device=%(device)s" %self.optdict)
avg.logger.info(
"width=%(width)d height=%(height)d pixelformat=%(pixelFormat)s"
%self.optdict)
avg.logger.info("unit=%(unit)d framerate=%(framerate)d fw800=%(fw800)s"
%self.optdict)
self.camNode = avg.CameraNode(driver=self.optdict["driver"],
device=self.optdict["device"], unit=self.optdict["unit"],
fw800=self.optdict["fw800"], framerate=self.optdict["framerate"],
capturewidth=self.optdict["width"], captureheight=self.optdict["height"],
pixelformat=self.optdict["pixelFormat"], parent=self)
if not self.optdict["noinfo"]:
self.infoText = ("Driver=%(driver)s (dev=%(device)s unit=%(unit)d) "
"%(width)dx%(height)d@%(framerate)f" %self.optdict)
avg.WordsNode(text=self.infoText, color="ff3333", pos=(5,5), fontsize=14,
rawtextmode=True, parent=self)
self.frameText = avg.WordsNode(color="ff3333", pos=(5,25), fontsize=14,
parent=self)
else:
self.frameText = None
self.setupKeys()
self.camNode.play()
player.setTimeout(100, self.checkCamera)
def onFrame(self):
if self.frameText:
self.curFrame += 1
self.frameText.text = "%(cam)d/%(app)d" \
%{"cam":self.camNode.framenum, "app":self.curFrame}
def checkCamera(self):
if not(self.camNode.isAvailable()):
avg.logger.error("Could not open camera")
exit(1)
def setupKeys(self):
def setWhitebalance():
print "Setting whitebalance"
self.camNode.doOneShotWhitebalance()
def addWhitebalance(du = 0, dv = 0):
self.camNode.setWhitebalance(self.camNode.getWhitebalanceU() + du,
self.camNode.getWhitebalanceV() + dv)
print ("u:", self.camNode.getWhitebalanceU(), "v:",
self.camNode.getWhitebalanceV())
def addGain(gain):
self.camNode.gain += gain
print "gain:", self.camNode.gain
def addShutter(shutter):
self.camNode.shutter += shutter
print "shutter:", self.camNode.shutter
app.keyboardmanager.bindKeyDown(keystring="w",
handler=setWhitebalance,
help="Execute whitebalance")
app.keyboardmanager.bindKeyDown(keystring="1",
handler=lambda: addWhitebalance(du = -1),
help="Decrease whitebalance u")
app.keyboardmanager.bindKeyDown(keystring="2",
handler=lambda: addWhitebalance(du = 1),
help="Increase whitebalance u")
app.keyboardmanager.bindKeyDown(keystring="3",
handler=lambda: addWhitebalance(dv = -1),
help="Decrease whitebalance v")
app.keyboardmanager.bindKeyDown(keystring="4",
handler=lambda: addWhitebalance(dv = 1),
help="Increase whitebalance v")
app.keyboardmanager.bindKeyDown(keystring="left",
handler=lambda: addShutter(shutter = -1),
help="Decrease shutter")
app.keyboardmanager.bindKeyDown(keystring="right",
handler=lambda: addShutter(shutter = 1),
help="Increase shutter")
app.keyboardmanager.bindKeyDown(keystring="up",
handler=lambda: addGain(gain = 1),
help="Increase gain")
app.keyboardmanager.bindKeyDown(keystring="down",
handler=lambda: addGain(gain = -1),
help="Decrease gain")
if __name__ == "__main__":
app.App().run(ShowCamera())
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