Yes, please do.
On Feb 11, 5:44 am, steve2641 <[email protected]> wrote:
> Bug number 1975 was entered for this issue.
> The bug headline is "Add Support For a Two Stage Camera Key".
>
> Should I also have entered bugs for my two previous discussion issues?
>
> http://groups.google.com/group/android-porting/browse_thread/thread/c...
>
> http://groups.google.com/group/android-porting/browse_thread/thread/9...
>
> On Feb 10, 7:03 pm, Dave Sparks <[email protected]> wrote:
>
> > Got it. That's a new requirement. Write up a bug and we'll try to
> > include it in a future release.
>
> > On Feb 10, 11:45 am, steve2641 <[email protected]> wrote:
>
> > > Dave,
>
> > > I think you are slightly missing my point. This query is not related
> > > to continuous auto focus. Let me try to explain again.
>
> > > Say for instance you have a hardware platform with an auto focus
> > > module that requires power to hold the lens in position (except for
> > > the infinity position). When autoFocus() called, the power to the AF
> > > module is enabled and the auto focus algorithm runs moving the lens
> > > until focus is achieved. Assume the lens position is now not in the
> > > infinity position, so in order to maintain the lens position you must
> > > keep the auto focus module powered up. The AF process is complete and
> > > a callback is made to the application to denote the focus status. If
> > > the user now simply releases the half pressed capture key, not
> > > performing a capture, how is the CameraHardwareInterface layer to know
> > > that it should now turn power off to the AF module and let the lens
> > > move back to the infinity position?
>
> > > The auto focus module power is not the only thing that gets locked
> > > during the camera key half press. Other algorithms run and lock and
> > > need to be released when the user simply releases the key.
>
> > > Steve.
>
> > > On Feb 10, 11:30 am, Dave Sparks <[email protected]> wrote:
>
> > > > When you call autoFocus(), you get a callback after focus is completed
> > > > with a success or fail indicator. This is where you would display your
> > > > in-focus indicator in the view finder. If the user releases the
> > > > shutter button, then the app does nothing. If the user presses the
> > > > shutter button, you call takePicture().
>
> > > > We don't have an API that supports continuous auto-focus. This is
> > > > where the user holds the shutter half-down and the lens is
> > > > continuously. This is an enhancement that will probably come in the
> > > > Donuts release.
>
> > > > On Feb 10, 8:24 am, steve2641 <[email protected]> wrote:
>
> > > > > Hi,
>
> > > > > I'm trying to understand how to implement a solution for a two stage
> > > > > camera key. There is an "autoFocus()" call in the Java world which
> > > > > translates down to an "autoFocus()" call CameraHardwareInterface.
> > > > > This seems to be the proper place to direct the camera key half press
> > > > > event, but how is the release event of camera key half press
> > > > > communicated down to the CameraHardwareInterface?
>
> > > > > A typical scenario for the camera key half press is that a number of
> > > > > algorithms are kicked off and at the completion the results are locked
> > > > > in until either a capture occurs or the user releases the camera key.
> > > > > The case of a capture occuring is handled by the APIs, but again the
> > > > > case where the user releases the camera key does not seems to be
> > > > > considered, or I'm totally missing it :)
>
> > > > > One of the more common, and obvious, examples of the use of a camera
> > > > > key half press release event/call is the focus indication. On many
> > > > > cameras, and some mobile devices, when the user half presses the
> > > > > camera key an indication of the focus state is shown in preview
> > > > > window. This indication will often be a small box in the center of
> > > > > the window. While the user continues to hold the camera key in the
> > > > > half pressed state, this indication will stay on the screen. When the
> > > > > user releases the camera key, this indication will disappear. In
> > > > > order to allow this indication to be drawn within the
> > > > > CameraHardwareInterface implementation, as well as to unlock the other
> > > > > less obvious half press features, a half press release event/call is
> > > > > needed.
>
> > > > > Thoughts?
>
> > > > > Steve.- Hide quoted text -
>
> > > > - Show quoted text -- Hide quoted text -
>
> > - Show quoted text -
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