user defined, process frames to output one frame, pass through by default frames: input frames, list format
(self, frames)
| 102 | self._frames.pop(0) |
| 103 | |
| 104 | def core_process(self, frames): |
| 105 | """ |
| 106 | user defined, process frames to output one frame, pass through by default |
| 107 | frames: input frames, list format |
| 108 | """ |
| 109 | return frames[0] |
| 110 | |
| 111 | def clean(self): |
| 112 | pass |