def __init__(self):
lib = cutil.find_library('v4lcapture')
if lib is not None:
self.v4l = cdll.LoadLibrary(lib)
error.log('libv4lcapture.so shared library loaded')
else:
error.critical('cannot load libv4lcapture.so shared library')
def __init__(self):
lib = cutil.find_library("v4lcapture")
if lib is not None:
self.v4l = cdll.LoadLibrary(lib)
error.log("libv4lcapture.so shared library loaded")
else:
error.critical("cannot load libv4lcapture.so shared library")
def accept(self):
'''
Apply changes and hide window.
'''
self.route.execute(self.eth_cb.currentText())
error.log('static route applied')
self.hide()
def apply(self):
'''
Apply changes.
'''
self.params.clear()
self.params.set_attr('device', self.device_cb.currentText())
self.root.capture()
error.log('device change applied')
def apply(self):
'''
Apply changes.
'''
self.captab.set()
self.streamtab.set()
self.root.capture()
error.log('parameters changes applied')
def _preferences(self):
'''
Create preference window.
'''
self.thread.ready.disconnect(self._preferences)
self.pref = TabDialog(self.v4l, self.params, self.central)
self.pref.setWindowTitle('Preferences')
self.pref.setWindowIcon(QIcon.fromTheme('configure'))
error.log('preferences window created')
def _device(self):
'''
Create device choosing window.
'''
self.thread.ready.disconnect(self._device)
self.dev = SimpleDialog(self.v4l, self.params, self.central)
self.dev.setWindowTitle('Change capture board')
self.dev.setWindowIcon(QIcon.fromTheme('preferences-desktop-multimedia'))
error.log('device choosing window created')
def _preferences(self):
'''
Create preference window.
'''
self.thread.ready.disconnect(self._preferences)
self.pref = TabDialog(self.v4l, self.params, self.central)
self.pref.setWindowTitle('Preferences')
self.pref.setWindowIcon(QIcon.fromTheme('configure'))
error.log('preferences window created')
def set_attr(self, key, value):
"""
Create or change an attribute into parameters dict.
< key: string key to set
< value: string/tuple paired with key
"""
if key in self.VALID:
self.params[key] = value
error.log("{} changed to {}".format(key, value))
def _toggleEncoding(self):
self.enc_act.toggled.disconnect(self._toggleEncoding)
self.params.toggle_encoding()
if self.params.encoding():
error.log('streaming started at {}'.format(self.v4l.getFilename()))
else:
error.log('streaming stopped')
self._status()
self.capture()
self.enc_act.toggled.connect(self._toggleEncoding)
def _device(self):
'''
Create device choosing window.
'''
self.thread.ready.disconnect(self._device)
self.dev = SimpleDialog(self.v4l, self.params, self.central)
self.dev.setWindowTitle('Change capture board')
self.dev.setWindowIcon(
QIcon.fromTheme('preferences-desktop-multimedia'))
error.log('device choosing window created')
def _toggleEncoding(self):
self.enc_act.toggled.disconnect(self._toggleEncoding)
self.params.toggle_encoding()
if self.params.encoding():
error.log('streaming started at {}'.format(self.v4l.getFilename()))
else:
error.log('streaming stopped')
self._status()
self.capture()
self.enc_act.toggled.connect(self._toggleEncoding)
def set_attr(self, key, value):
'''
Create or change an attribute into parameters dict.
< key: string key to set
< value: string/tuple paired with key
'''
if key in self.VALID:
self.params[key] = value
error.log('{} changed to {}'.format(key, value))
def write(self):
'''
Writes the json config file.
'''
try:
with open(self.PATH, 'w') as conf:
json.dump(self.conf, conf, indent=4)
error.log('changes written to {}'.format(self.PATH))
except IOError:
error.error('error writing to {}; changes not applied'.format(
self.PATH))
def execute(self, eth):
'''
Effectively execute the command with selected tool, using subprocess.
< eth: the chosen eth interface
'''
cmd = self._build(eth)
try:
sp.check_call(cmd, stdout=sp.DEVNULL, stderr=sp.DEVNULL)
except sp.CalledProcessError as e:
if e.returncode == 2:
error.log('static route for multicast streaming already set')
else:
error.error('cannot set static route for multicast streaming')
def _read(self):
'''
Reads the json config file.
If not found create a json object (dict).
'''
if path.isfile(self.PATH):
try:
with open(self.PATH, 'r') as conf:
self.conf = json.load(conf)
error.log('{} loaded'.format(self.PATH))
except OSError:
error.critical('cannot open {}'.format(self.PATH))
else:
self.conf = {}
def capture(self):
'''
Instantiate new QThread to capture frames, waiting for previous to stop.
'''
if self.thread is not None:
self.thread.quit()
self.thread.wait()
self.thread = thread.CaptureThread(self.app, self.v4l, self.params,
self._updatePreview)
self.thread.start()
# update only if initialized
try:
self.thread.ready.connect(self.pref.update)
self.thread.ready.connect(lambda: self._status(message=False))
except AttributeError:
pass
error.log('capture thread created and started')
def capture(self):
'''
Instantiate new QThread to capture frames, waiting for previous to stop.
'''
if self.thread is not None:
self.thread.quit()
self.thread.wait()
self.thread = thread.CaptureThread(self.app, self.v4l, self.params,
self._updatePreview)
self.thread.start()
# update only if initialized
try:
self.thread.ready.connect(self.pref.update)
self.thread.ready.connect(lambda: self._status(message=False))
except AttributeError:
pass
error.log('capture thread created and started')
def closeEvent(self, event):
'''
Closes capture QThread when window is closed.
Closes other windows open.
Writes config.
< event: closing event
'''
self.thread.quit()
self.thread.wait()
error.log('capture thread stopped')
# close only if initialized
try:
self.dev.close()
self.pref.close()
except AttributeError:
pass
# close core log
self.v4l.closeLog()
error.log('core log closed')
def closeEvent(self, event):
'''
Closes capture QThread when window is closed.
Closes other windows open.
Writes config.
< event: closing event
'''
self.thread.quit()
self.thread.wait()
error.log('capture thread stopped')
# close only if initialized
try:
self.dev.close()
self.pref.close()
except AttributeError:
pass
# close core log
self.v4l.closeLog()
error.log('core log closed')
def __init__(self, conf, argv, v4l):
'''
Creates main window of the program.
< conf: Config object
< argv: command line options
< v4l: v4l wrapper object
'''
# config and wrapper instance
self.conf = conf
self.v4l = v4l
# thread: None for evaluating first execution
self.params = thread.CaptureParams(self.conf)
self.thread = None
# application
self.app = QApplication(argv)
super(Window, self).__init__()
## title, icon and default size and position
self.setWindowTitle('V4LCapture')
iconpath = pkg.resource_filename('v4lcapture', 'v4lcapture.png')
if path.isfile(iconpath):
self.setWindowIcon(QIcon(iconpath))
## ui creation
self._createUI()
error.log('created main window')
self._status(message=False)
self._createPreview()
self.capture()
# route, device, preference (when thread is ready)
self.thread.ready.connect(self._route)
self.thread.ready.connect(self._device)
self.thread.ready.connect(self._preferences)
# visualize
self.show()
def __init__(self, conf, argv, v4l):
'''
Creates main window of the program.
< conf: Config object
< argv: command line options
< v4l: v4l wrapper object
'''
# config and wrapper instance
self.conf = conf
self.v4l = v4l
# thread: None for evaluating first execution
self.params = thread.CaptureParams(self.conf)
self.thread = None
# application
self.app = QApplication(argv)
super(Window, self).__init__()
## title, icon and default size and position
self.setWindowTitle('V4LCapture')
iconpath = pkg.resource_filename('v4lcapture', 'v4lcapture.png')
if path.isfile(iconpath):
self.setWindowIcon(QIcon(iconpath))
## ui creation
self._createUI()
error.log('created main window')
self._status(message=False)
self._createPreview()
self.capture()
# route, device, preference (when thread is ready)
self.thread.ready.connect(self._route)
self.thread.ready.connect(self._device)
self.thread.ready.connect(self._preferences)
# visualize
self.show()
def toggle_encoding(self):
'''
Set encoding to true if false or the other way round.
'''
self.enc = not self.enc
error.log('encoding set to {}'.format(self.enc))
def _route(self):
'''
Create eth choosing window to add static route for streamings.
'''
self.route = RouteDialog(self.central)
error.log('static route window created')
def _route(self):
'''
Create eth choosing window to add static route for streamings.
'''
self.route = RouteDialog(self.central)
error.log('static route window created')
def toggle_encoding(self):
"""
Set encoding to true if false or the other way round.
"""
self.enc = not self.enc
error.log("encoding set to {}".format(self.enc))
