Hi, On 17-10-2016 12:37, Hans Verkuil wrote: > Report of the V4L2 brainstorm meeting October 10-11 2016, Berlin [snip] > 4.4 Streamon and streamoff > > - How to handle STREAMON/OFF? > - Pipelines without video nodes? > - Buffer size may change. Need to reallocate buffers, which is currently done > through streamoff, reqbufs and streamon. > - We probably want a STREAM_CANCEL which would dequeue pending buffers (requests) > without stopping streaming. > > I am facing this scenario in my HDMI decoder driver. I have an input stream which may change the resolution while streaming, so I need to do off/reconfigure/on and request new buffer with the new image size, and I also have to mark the previous buffers as invalid. The automatic dequeue of pending buffers would help a lot but still, at least in my case, I have to reconfigure the controller and pipeline to propagate the new format. Off topic: I am using the notify functions to inform user space of a format change but it is not working at all with vlc or mplayer :(. Does anyone know of any application which can handle this format change correctly? Best regards, Jose Miguel Abreu -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
