def get_video_mode_enum(video_modes=None):
if video_modes is None:
video_modes = get_available_video_modes(
format_='YUY2')
video_mode_map = get_video_mode_map(video_modes)
video_keys = sorted(video_mode_map.keys())
return Enum.named('video_mode').valued(*video_keys)
def select_video_caps():
video_modes = get_available_video_modes(format_='YUY2')
selected_mode = select_video_mode(video_modes)
if selected_mode:
return selected_mode['device'], GstVideoSourceManager.get_caps_string(selected_mode)
else:
return None
def _process_request(self, request):
if request['command'] == 'create':
'''
Create a pipeline
'''
if self.pipeline is None:
device, caps_str = request['video_caps']
print '''{'device': %s, 'caps_str': %s}''' % (device, caps_str)
video_source = create_video_source(device, caps_str)
self.pipeline = get_pipeline(video_source)
elif request['command'] == 'start':
if self.pipeline:
result = self.pipeline.set_state(gst.STATE_PLAYING)
return (result != gst.STATE_CHANGE_FAILURE)
elif request['command'] == 'stop':
if self.pipeline:
self.pipeline.set_state(gst.STATE_NULL)
elif request['command'] == 'reset':
self._cleanup_pipeline()
elif request['command'] == 'finish':
self._finish()
raise SystemExit
elif request['command'] == 'select_video_caps':
result = select_video_caps()
return result
elif request['command'] == 'get_available_video_modes':
result = get_available_video_modes(**request['kwargs'])
return result
def get_video_mode_form(video_modes=None):
if video_modes is None:
video_modes = get_available_video_modes(
format_='YUY2')
video_mode_map = get_video_mode_map(video_modes)
video_keys = sorted(video_mode_map.keys())
form = Form.of(Enum.named('video_mode').valued(
*video_keys).using(default=video_keys[0]))
return form
