Can we access camera using android NDK

[Amila]

Hi,

Can we access the camera using android NDK to enhance the
performances?
Does any one have such sample code?

Regards
Amila

[Onur Cinar]

Hi Amila,

Not directly possible with the API covered by the NDK. But if you link to certain portions of the OS, then you will have direct access to the camera (not the driver but the wrapper layer), and this is not officially supported at the moment.  The API (look for Camera.h) is very similar to the Java equivalent, but you may get a better frame rate.   The major issue is that you will need to have multiple libraries for different version of the Android OS, and things may stop working at any time in the future after an OS update, so it will require lots of maintenance for your application.  So it purely depends on what you would like to accomplish with the camera. Most of the Video communication applications on Android is currently doing that direct access.

Regards,

-onur

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[Glenn Kasten]

As Tim mentioned in the other thread with similar subject, this is
dangerous. Use JNI.

> > android-ndk...@googlegroups.com<android-ndk%2Bunsubscribe@googlegr oups.com>
> > .

[Amila Karunanayake]

Hi Onur,

Can you send me sample code or any reference to access camera from Camera.h

Thanks

Regards

Amila

[mic _]

Reference / code sample:

http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=include/ui/Camera.h;h=5219772a1a1fe0c89a732c1f388f3323474543f0;hb=36f68b8f24df906c969581b0b8e1a47f95dc03cb
and
http://developer.android.com/reference/android/hardware/Camera.html

/Michael