def initAndRun(self,
cameraStream: cams.PiCameraCircularIO,
file=None,
parent=None):
self.logger = self.logger.getChild(
"RTSP") if file is None else self.logger.getChild("Record")
self._myParent = parent
self._redirectPackages(cameraStream, file)
self.name = "cam_RTSP_queue" if file is None else "cam_file_queue"
self.setDaemon(False)
self.start()
if parent is not None:
try:
with self.lock:
with cameraStream.lock:
save_pos = cameraStream.tell()
try:
pos = cameraStream._find_all(
camf.PiVideoFrameType.sps_header)
if pos is not None:
cameraStream.seek(pos)
while True:
buf = cameraStream.read1()
if not buf:
break
self._queue.put(buf)
finally:
cameraStream.seek(save_pos)
cameraStream.clear()
except:
self.logger.exception("Konnte anfang nicht speichern")
def test_camera_stream_frames_trunc_right():
# We don't officially support this but the code should work if entire
# frames are truncated (without leaving partial frame data) which is what
# we're testing for here (of course, the resulting H.264 stream won't be
# valid, but we're not testing that...)
camera = mock.Mock()
encoder = mock.Mock()
camera._encoders = {1: encoder}
stream = PiCameraCircularIO(camera, size=10)
frames = []
for data, frame in generate_frames('hkffkff'):
encoder.frame = frame
if frame.complete:
frames.append(frame)
stream.write(data)
stream.seek(7)
stream.truncate()
del frames[-2:]
assert stream.getvalue() == b'hkkffkk'
assert list(stream.frames) == frames
assert list(reversed(stream.frames)) == frames[::-1]
