callbacks.py 文件源码

def media_open_cb(opaque, datap, sizep):
    """LibVLC callback used to point the player to the video buffer upon opening
    the media.

    opaque: pointer to our media object.
    datap:  the libVLC video buffer.
    sizep:  length of the media stream (or sys.maxsize if unknown).
    """

    datap.contents.value = opaque
    sizep.contents.value = sys.maxsize

    container = ctypes.cast(opaque, ctypes.POINTER(
        ctypes.py_object)).contents.value

    return container.open()