Hi Hans Thanks for your comments. Best Regards Soby Mathew On Mon, Jul 23, 2012 at 6:14 PM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > On Mon July 23 2012 14:35:14 Soby Mathew wrote: >> Hi Hans, >> Thanks for the reply and I was going through the HDMI1.4 spec again. >> The 'active space' is part of the Vactive and Vactive is sum of active >> video and active space. >> >> > No, as I understand it active_space is just part of the active video. So the >> > timings struct is fine, it's just that the height parameter for e.g. 720p in >> > frame pack format is 2*720 + vfrontporch + vsync + vbackporch. That's the height >> > of the frame that will have to be DMAed from/to the receiver/transmitter. >> >> In this case (assuming frame packed) the total height should be 2*720 >> + 30 + vfrontporch + vsync + vbackporch. >> >> Sorry, but if I am understanding you correct, in case of 3D frame >> packed format, the height field can be 'active video + active space'. > > Right. > >> So the application need to treat the buffers appropriately according >> to the 3D format detected. Would this be a good solution? > > Right. So the application will need to obtain the timings somehow (either from > v4l2-dv-timings.h, or from VIDIOC_G/QUERY_DV_TIMINGS) so it knows how to > interpret the captured data and how large the buffer size has to be in the first > place. > > I think it will all work out, but you would have to actually implement it to be > sure I haven't forgotten anything. > > Frankly, I'd say that the frame_packed format is something you want to avoid :-) > It's pretty weird. > > Regards, > > Hans > >> >> >> > I think the only thing that needs to be done is that the appropriate timings are >> > added to linux/v4l2-dv-timings.h. >> >> Yes , the standard 3 D timings need to be added to this file which can >> be taken up. >> >> > Regards, >> > >> > Hans >> > >> >> >> Best Regards >> Soby Mathew >> -- 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
