On Fri, Oct 23, 2009 at 12:10 AM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > >> The attach patch modifies v4l2-ctl -I to also output signal status as >> detected by the driver/hardware. This info is available in the status >> field of the data returned by VIDIOC_ENUMINPUT which v4l2-ctl -I >> already calls. The strings are copied from the v4l2 api specification >> and could perhaps be modified a bit to fit the application. >> >> Best regards >> >> Sigmund Augdal >> > > Hi Sigmund, > > This doesn't work right: the status field is a bitmask, so multiple bits > can be set at the same time. So a switch is not the right choice for that. > Look at some of the other functions to print bitmasks in v4l2-ctl.cpp for > ideas on how to implement this properly. > > But it will be nice to have this in v4l2-ctl! Right, I realized this shortly after sending. I'll take a look at this today. However, I'm unsure how to handle the value 0. It seems this is used both for "signal detected and everything is ok" and "driver has no clue if there is a signal or not". Any feedback welcome. Best regards Sigmund Augdal > > Regards, > > Hans > > -- > Hans Verkuil - video4linux developer - sponsored by TANDBERG Telecom > > -- 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
