Tim wrote:
On Nov 3, 8:58 am, Girish htgir...@gmail.com wrote:
In my application i want to pass the camera data to native layer. what
is the best possible approach for doing the same.
I know it can be done 2 ways.
1.start the camera in application and pass the preview data to native
layer. But i feel this may consume lot of resources.
This is the only 'supported' way. Apparently there is a bug with the
camera callback that creates a new massive object for every frame.
Since java is shite and garbage collected this slows this way down
even before you copy all the data through JNI.
Well, it's not a bug, it's just how Java works.
It certainly does suck.
2.Start the camera directly in native layer and use it. So JNI will
come less into picture. and not much resource loading also.But dont
want to take any risk by using the lower layer code which may change
in future.
Yeah this would be ideal, but not supported yet, if ever.
We tried to get opencore to do this for us, and we failed.
We never even got opencore's extensive debugging to turn on while trying
to figure out how things work, and after some person-weeks of effort, we
understood enough about opencore that we can use it as a library, but
not via MediaService.
We are now writing our own service that opens the camera hardware
directly, and runs as a service. I do not think a lot of things will
happen to this layer, except that it will not be available anymore.
We tried to chmod the camera devices so that it could be a non-root
service, but there is more to it than that, so for now, it's a root
service.
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