def print_capabilities(self):
capability = _v4l2.v4l2_capability()
print(("get capabilities result", (fcntl.ioctl(self._video_device,
_v4l2.VIDIOC_QUERYCAP,
capability))))
print(("capabilities", hex(capability.capabilities)))
print(("v4l2 driver: {}".format(capability.driver)))
def open_camera(self):
d = os.open(self.webcam, os.O_RDWR)
cap = v4l2.v4l2_capability()
ioctl(d, v4l2.VIDIOC_QUERYCAP, cap)
vid_format = v4l2.v4l2_format()
vid_format.type = v4l2.V4L2_BUF_TYPE_VIDEO_OUTPUT
vid_format.fmt.pix.width = self.width
vid_format.fmt.pix.height = self.height
vid_format.fmt.pix.pixelformat = v4l2.V4L2_PIX_FMT_RGB24
vid_format.fmt.pix.field = v4l2.V4L2_FIELD_NONE
vid_format.fmt.pix.colorspace = v4l2.V4L2_COLORSPACE_SRGB
ioctl(d, v4l2.VIDIOC_S_FMT, vid_format)
return d
