Hi Deepthy, On Friday 16 September 2011 15:00:53 Ravi, Deepthy wrote: > On Thursday, September 08, 2011 10:51 PM Laurent Pinchart wrote: > > On Thursday 08 September 2011 15:35:22 Deepthy Ravi wrote: > >> From: Vaibhav Hiremath <hvaibhav@xxxxxx> > >> > >> In order to support TVP5146 (for that matter any video decoder), > >> it is important to support G/S/ENUM_STD ioctl on /dev/videoX > >> device node. > > > > Why so ? Shouldn't it be queried on the subdev output pad directly ? > > Because standard v4l2 application for analog devices will call these std > ioctls on the streaming device node. So it's done on /dev/video to make the > existing apllication work. Existing applications can't work with the OMAP3 ISP (and similar complex embedded devices) without userspace support anyway, either in the form of a GStreamer element or a libv4l plugin. I still believe that analog video standard operations should be added to the subdev pad operations and exposed through subdev device nodes, exactly as done with formats. -- Regards, Laurent Pinchart -- 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
