I have implemented a normal image pipeline with demosaicing and DMA. It is working fine. But providing less frame rate than expecting. I also used threading to use IPYwidgets for controlling the camera module. Everything is working as expected but with less frame rate. Even with the cacheable buffer, it can’t get to more than 15 FPS (While it should be 60 FPS).
So I have tried implementing VDMA instead of DMA. It is providing 60 FPS and working fine until a run time error occurs. Sometimes there is no error at all. Sometimes it stuck within few seconds.
Exception in thread Thread-10: Traceback (most recent call last): File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner self.run() File "/usr/lib/python3.6/threading.py", line 864, in run self._target(*self._args, **self._kwargs) File "<ipython-input-19-1a986e13837c>", line 24, in work frame = vdma.readchannel.readframe() File "/usr/local/lib/python3.6/dist-packages/pynq/lib/video/dma.py", line 199, in readframe loop = asyncio.get_event_loop() File "/usr/lib/python3.6/asyncio/events.py", line 694, in get_event_loop return get_event_loop_policy().get_event_loop() File "/usr/lib/python3.6/asyncio/events.py", line 602, in get_event_loop % threading.current_thread().name) RuntimeError: There is no current event loop in thread 'Thread-10'.
I appreciate any suggestion on this.