android - Adding ARToolkit Marker tracking into Tango -


i have been trying integrate artoolkit marker object tracking tango application.

so far have created build tango app can access , use artoolkit native library or artoolkit unity wrappers. however, both seem require exclusive access camera in default configurations.

how feed same android video feed both libraries?

  • could create dummy camera device doubles out feed?
  • could take tango feed normal, , resend artoolkit special videoconf

[edit]
artoolkit uses older camera1 api, takes onpreviewframe() callback , passes byte[] data it's own native library call, actual work.

along lines of second bullet point, tango provide copy of each frames raw camera data using itangovideooverlay .
(artoolkits ndk functionality seems expect nv21, can accept other formats)

if data extractable tango, believe artoolkit ndk functionality can used without owning camera.

i afraid neither of method mentioned work. tango has exclusive access camera , believe artoolkit occupies camera exclusively through camera2 api. current tangosdk, think walk-around use artoolkit camera rendering, , tango pose tracking.

however, expose problem time-stamping, tango , artoolkit has different timestamps. solution take timestamp offset @ beginning when application starts, , apply offset when querying pose tango based on timestamp.


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