Billy Biggs wrote:
Just a note on this, if the spec should be that capture should stop before S_FREQ, you may as well not allow multiple opens on the device.
Yes, and it would be even more nasty for parallel capture of video and VBI. Imagine some background data harvesting VBI app is running without a GUI. The user would basically have to use ps|grep and kill everytime he/she would like to switch the channel in a TV app. Would be a huge step backwards, far beyond v4l1. Therefore I also think norm switching should be possible while capture is enabled. Although I too would stop capture when I change norms for my own capture process, however a parallel VBI capture or overlay should not limit my capabilities to switch (see also the newly introduced priority handling: a background app should be able to avoid interfering with interactive/foreground apps in any way) bye, -tom
