/usr/share/pyshared/libavg/avg_chromakey.py is in python-libavg 1.7.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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# -*- 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
from libavg import avg, AVGApp
from libavg.ui import button
from libavg import parsecamargs
GUI_SIZE=(300, 200)
g_Player = avg.Player.get()
class Slider(avg.DivNode):
def __init__(self, width, min, max, onChange, **kwargs):
avg.DivNode.__init__(self, **kwargs)
self.__onChange = onChange
self.size = (width, 20)
self.__min = min
self.__max = max
self.__val = min
avg.LineNode(pos1=(7,14), pos2=(width-7,14), color="FFFFFF", strokewidth=2,
parent=self)
self.__slider = avg.DivNode(pos=(0,0), size=(14,20), parent=self)
avg.PolygonNode(pos=((1,0), (13,0), (7,18)), fillopacity=1, fillcolor="FFFFFF",
color="808080", parent=self.__slider)
self.__slider.setEventHandler(avg.CURSORDOWN, avg.MOUSE,
self.__onSliderDown)
self.setEventHandler(avg.CURSORDOWN, avg.MOUSE, self.__onBarDown)
self.__isDragging = False
def getVal(self):
return self.__val
def setVal(self, val):
self.__val = val
self.__positionSlider()
val = property(getVal, setVal)
def __onSliderDown(self, event):
self.__slider.setEventCapture()
self.__slider.setEventHandler(avg.CURSORMOTION, avg.MOUSE, self.__onSliderMove)
self.__slider.setEventHandler(avg.CURSORUP, avg.MOUSE, self.__onSliderUp)
self.__sliderDownPos = event.pos
self.__isDragging = True
self.__dragStartVal = self.__val
def __onSliderMove(self, event):
numPixelsMoved = float(event.pos.x-self.__sliderDownPos.x)
self.__val = (self.__dragStartVal+numPixelsMoved/(self.size.x-14)
*(self.__max-self.__min))
self.__positionSlider()
def __onSliderUp(self, event):
self.__onSliderMove(event)
self.__slider.releaseEventCapture()
self.__slider.setEventHandler(avg.CURSORMOTION, avg.MOUSE, None)
self.__slider.setEventHandler(avg.CURSORUP, avg.MOUSE, None)
self.__isDragging = False
def __onBarDown(self, event):
if not(self.__isDragging):
localPos = self.getRelPos(event.pos)
ratio = (localPos.x-7)/(self.size.x-14)
self.__val = self.__min+ratio*(self.__max-self.__min)
print localPos, ", ", ratio, ", ", self.__val
self.__positionSlider()
def __positionSlider(self):
if self.__val < self.__min:
self.__val = self.__min
elif self.__val > self.__max:
self.__val = self.__max
ratio = ((self.__val-self.__min)/(self.__max-self.__min))
self.__slider.pos = (ratio*(self.size.x-14), 0)
self.__onChange()
class FXSlider(avg.DivNode):
def __init__(self, row, min, max, fxNode, fxAttrName, caption, isInt, **kwargs):
avg.DivNode.__init__(self, **kwargs)
avg.RectNode(pos=(0,8), size=(280,38), color="808080", strokewidth=2,
parent=self)
textBgRect = avg.RectNode(pos=(8,2), fillcolor="000000", fillopacity=1,
strokewidth=0, parent=self)
caption = avg.WordsNode(pos=(10,0), text=caption, parent=self)
textBgRect.size = caption.getMediaSize()+(4, 2)
self.__words = avg.WordsNode(pos=(240,23), parent=self)
self.__slider = Slider(220, min, max, self.__onSliderMove, pos=(15,20),
parent=self)
self.pos = (0, row*46)
self.__fxNode = fxNode
self.__fxAttrName = fxAttrName
self.__caption = caption
self.__isInt = isInt
self.__slider.val = getattr(self.__fxNode, fxAttrName)
def __onSliderMove(self):
if self.__isInt:
setattr(self.__fxNode, self.__fxAttrName, int(self.__slider.val))
self.__words.text = "%i"%self.__slider.val
else:
setattr(self.__fxNode, self.__fxAttrName, self.__slider.val)
self.__words.text = "%.2f"%self.__slider.val
class TextButton(button.Button):
def __init__(self, text, **kwargs):
size = kwargs["size"]
upNode = avg.DivNode()
avg.RectNode(size=size, fillcolor="FFFFFF", fillopacity=1, color="FFFFFF",
parent=upNode)
avg.WordsNode(pos=(4,3), text=text, color="000000", parent=upNode)
downNode = avg.DivNode()
avg.RectNode(size=size, fillcolor="000000", fillopacity=1, color="FFFFFF",
parent=downNode)
avg.WordsNode(pos=(4,3), text=text, color="FFFFFF", parent=downNode)
kwargs["upNode"] = upNode
kwargs["downNode"] = downNode
button.Button.__init__(self, **kwargs)
def colorToString(colorTuple):
s = "%02X%02X%02X"%colorTuple[:-1]
return s
class Chromakey(AVGApp):
def init(self):
avg.RectNode(size=(options.width,options.height), fillcolor="FF0000",
fillopacity=1, strokewidth=0, parent=self._parentNode)
self.__camNode = avg.CameraNode(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, parent=self._parentNode)
self.__camNode.play()
self.__filter = avg.ChromaKeyFXNode()
self.__camNode.setEffect(self.__filter)
self.__filter.color = "0000FF"
self.__filter.htolerance = 0.05
self.__filter.stolerance = 1.0
self.__filter.ltolerance = 1.0
self.__filter.softness = 0.0
self.__createGUI()
def __createGUI(self):
self.__guiDiv = avg.DivNode(pos=(options.width+10,10), parent=self._parentNode)
self.__colorWords = avg.WordsNode(pos=(0,14), parent=self.__guiDiv)
self.__colorWords.text = "Key Color: "+self.__filter.color
self.__colorRect = avg.RectNode(pos=(200,12), size=(20, 20),
fillcolor=self.__filter.color, fillopacity=1,
color="FFFFFF", parent=self.__guiDiv)
self.__camNode.setEventHandler(avg.CURSORDOWN, avg.MOUSE,
self.__onColorDown)
FXSlider(1, 0.0, 1.0, self.__filter, "htolerance", "Hue Tolerance",
False, parent=self.__guiDiv)
FXSlider(2, 0.0, 1.0, self.__filter, "stolerance", "Saturation Tolerance",
False, parent=self.__guiDiv)
FXSlider(3, 0.0, 1.0, self.__filter, "ltolerance", "Lightness Tolerance",
False, parent=self.__guiDiv)
FXSlider(4, 0.0, 1.0, self.__filter, "softness", "Softness",
False, parent=self.__guiDiv)
FXSlider(5, 0, 8, self.__filter, "erosion", "Erosion",
True, parent=self.__guiDiv)
FXSlider(6, 0.0, 1.0, self.__filter, "spillthreshold", "Spill Suppression",
False, parent=self.__guiDiv)
TextButton(pos=(0,332), text="Whitebalance", size=(100,22),
clickHandler=self.__onWhitebalance, parent=self.__guiDiv)
TextButton(pos=(110,332), text="Dump Config", size=(100,22),
clickHandler=self.__dumpConfig, parent=self.__guiDiv)
FXSlider(9, 0, 500, self.__camNode, "shutter", "Shutter",
True, parent=self.__guiDiv)
FXSlider(10, 128, 1023, self.__camNode, "gain", "Gain",
True, parent=self.__guiDiv)
def __onColorDown(self, event):
pos = self.__camNode.getRelPos(event.pos)
bmp = self.__camNode.getBitmap()
color = bmp.getPixel(pos)
colorString = colorToString(color)
self.__filter.color = colorString
self.__colorWords.text = "Key Color: "+colorString
self.__colorRect.fillcolor = colorString
def __onWhitebalance(self, event):
self.__camNode.setWhitebalance(
self.__camNode.getWhitebalanceU(), self.__camNode.getWhitebalanceV())
self.__camNode.doOneShotWhitebalance()
def __dumpConfig(self, event):
print "Camera:"
print " device=", self.__camNode.device
print " shutter=", self.__camNode.shutter
print " gain=", self.__camNode.gain
print " White Balance: (u=", self.__camNode.getWhitebalanceU(), ", v=", \
self.__camNode.getWhitebalanceV()
print "Chromakey:"
print " color=", self.__filter.color
print " htolerance=", self.__filter.htolerance
print " stolerance=", self.__filter.stolerance
print " ltolerance=", self.__filter.ltolerance
print " softness=", self.__filter.softness
print " erosion=", self.__filter.erosion
print " spillthreshold=", self.__filter.spillthreshold
parser = optparse.OptionParser()
parsecamargs.addOptions(parser)
(options, args) = parser.parse_args()
if options.driver is None:
parser.print_help()
print
print "ERROR: at least '--driver' must be specified"
exit()
resolution=(GUI_SIZE[0]+options.width, max(GUI_SIZE[1],options.height))
Chromakey.start(resolution=resolution)
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