class Video(QtCore.QObject):
'''
This class implements part of project --
one video file with associated properties -- chambers, scale, etc
'''
def __init__(self, videoFileName, parent=None):
'''
Constructor
'''
super(Video, self).__init__(parent)
self.videoFileName = videoFileName
self.chambers = ChambersManager(self)
self.frameRate = -1
# Stub to get video file length and framerate
captureDevice = cv2.VideoCapture(unicode(videoFileName)) # Try to open file
if captureDevice is None : # Error opening file
#TODO: error report
print("Error opening video file {}".format(self.videoFileName))
raise
videoLength = int(captureDevice.get(cv2.cv.CV_CAP_PROP_FRAME_COUNT))-1
self.frameRate = captureDevice.get(cv2.cv.CV_CAP_PROP_FPS)
# Workaround over openCV bug
if isnan(self.frameRate) :
print('Buggy framerate, using -1')
self.frameRate = -1
print('Created video',videoLength, self.frameRate)
# Cham
self.chambers.setVideoLength(videoLength)
def loadChambers(self):
for name in sorted(glob(str(self.videoFileName) + '*.lt1')) :
print("Opening chamber ", name)
chamber,scale,frameRate = Chamber.loadFromFile(name)
if frameRate<>self.frameRate and self.frameRate>0 and frameRate >0 :
print("Chamber framerate {} not equal to video file one {}".format(frameRate,self.frameRate))
else :
self.chambers.addChamber(chamber)
QtGui.QApplication.processEvents()
if len(self.chambers) > 0 :
self.chambers.setScale(scale)
def saveChambers(self):
print('Saving chamber for ',self.videoFileName)
for chamber in self.chambers :
chamber.saveToFile(self.videoFileName + ".ch{0:02d}.lt1",
self.chambers.scale, self.frameRate)
def __init__(self, videoFileName, parent=None):
'''
Constructor
'''
super(Video, self).__init__(parent)
self.videoFileName = videoFileName
self.chambers = ChambersManager(self)
self.frameRate = -1
# Stub to get video file length and framerate
captureDevice = cv2.VideoCapture(unicode(videoFileName)) # Try to open file
if captureDevice is None : # Error opening file
#TODO: error report
print("Error opening video file {}".format(self.videoFileName))
raise
videoLength = int(captureDevice.get(cv2.cv.CV_CAP_PROP_FRAME_COUNT))-1
self.frameRate = captureDevice.get(cv2.cv.CV_CAP_PROP_FPS)
# Workaround over openCV bug
if isnan(self.frameRate) :
print('Buggy framerate, using -1')
self.frameRate = -1
print('Created video',videoLength, self.frameRate)
# Cham
self.chambers.setVideoLength(videoLength)
