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#!/usr/bin/env 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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