Hi Sylwester, On Sun, Jan 01, 2012 at 05:49:11PM +0100, Sylwester Nawrocki wrote: > On 12/31/2011 01:00 PM, Sakari Ailus wrote: > > Hi Sylwester, > > > > Apologies for my late answer. > > No problem, thanks for your comments! > > > On Sat, Dec 10, 2011 at 03:42:41PM +0100, Sylwester Nawrocki wrote: > >> Hi Sakari, > >> > >> On 12/10/2011 11:33 AM, Sakari Ailus wrote: > >>> On Sun, Dec 04, 2011 at 04:16:12PM +0100, Sylwester Nawrocki wrote: > >>>> Change the V4L2_CID_FOCUS_AUTO control type from boolean to a menu > >>>> type. In case of boolean control we had values 0 and 1 corresponding > >>>> to manual and automatic focus respectively. > >>>> > >>>> The V4L2_CID_FOCUS_AUTO menu control has currently following items: > >>>> 0 - V4L2_FOCUS_MANUAL, > >>>> 1 - V4L2_FOCUS_AUTO, > >>>> 2 - V4L2_FOCUS_AUTO_MACRO, > >>>> 3 - V4L2_FOCUS_AUTO_CONTINUOUS. > >>> > >>> I would put the macro mode to a separate menu since it's configuration for > >>> how the regular AF works rather than really different mode. > >> > >> Yes, makes sense. Most likely there could be also continuous macro auto focus.. > >> I don't have yet an idea what could be a name for that new menu though. > > > > V4L2_CID_FOCUS_AUTO_DISTANCE? It could then have choices FULL or MACRO. > > How about V4L2_CID_FOCUS_AUTO_SCAN_RANGE ? Which would then have choices: > NORMAL, > MACRO, > INFINITY > ? What does INFINITY signify? That lens is permanently positioned there? The name of the control sounds good to me, but I might change the order of FOCUS and AUTO in it. > >> Many Samsung devices have also something like guided auto focus, where the > >> application can specify location in the frame for focusing on. IIRC this could > >> be also single-shot or continuous. So it could make sense to group MACRO and > >> "guided" auto focus in one menu, what do you think ? > > > > I think it could be a separate menu. It's not connected to the distance > > OK, let me summarize > > * controls for starting/stopping auto focusing (V4L2_CID_FOCUS_AUTO == false) > > V4L2_CID_START_AUTO_FOCUS (button) - start auto focusing, > V4L2_CID_STOP_AUTO_FOCUS (button) - stop auto focusing (might be also > useful in V4L2_FOCUS_AUTO == true), > * auto focus status > > V4L2_CID_AUTO_FOCUS_STATUS (menu, read-only) - whether focusing is in > progress or not, > possible entries: > > - V4L2_AUTO_FOCUS_STATUS_IDLE, // auto focusing not enabled or force stopped > - V4L2_AUTO_FOCUS_STATUS_BUSY, // focusing in progress > - V4L2_AUTO_FOCUS_STATUS_SUCCESS, // single-shot auto focusing succeed > // or continuous AF in progress > - V4L2_AUTO_FOCUS_STATUS_FAIL, // auto focusing failed > > > * V4L2_CID_FOCUS_AUTO would retain its current semantics: > > V4L2_CID_FOCUS_AUTO (boolean) - selects auto/manual focus > false - manual > true - auto continuous > > * AF algorithm scan range, V4L2_CID_FOCUS_AUTO_SCAN_RANGE with choices: > > - V4L2_AUTO_FOCUS_SCAN_RANGE_NORMAL, > - V4L2_AUTO_FOCUS_SCAN_RANGE_MACRO, > - V4L2_AUTO_FOCUS_SCAN_RANGE_INFINITY > > > New menu control to choose behaviour of auto focus (either single-shot > or continuous): > > * select auto focus mode > > V4L2_CID_AUTO_FOCUS_MODE > V4L2_AUTO_FOCUS_MODE_NORMAL - "normal" auto focus (whole frame?) > V4L2_AUTO_FOCUS_MODE_SPOT - spot location passed with other > controls or selection API > V4L2_AUTO_FOCUS_MODE_RECTANGLE - rectangle passed with other > controls or selection API > > > > parameter. We also need to discuss how the af statistics window > > configuration is done. I'm not certain there could even be a standardised > > Do we need multiple windows for AF statistics ? > > If not, I'm inclined to use four separate controls for window configuration. > (X, Y, WIDTH, HEIGHT). This was Hans' preference in previous discussions [1]. > > > interface which could be used to control it all. > > > [1] http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg25647.html > > -- > Regards, > Sylwester -- Sakari Ailus e-mail: sakari.ailus@xxxxxx jabber/XMPP/Gmail: sailus@xxxxxxxxxxxxxx -- 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
