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Android camera HAL v3 and
Video4Linux 2
Sakari Ailus
<sakari.ailus@linux.intel.com>
2014-10-15

Android camera HAL v1
●
Modelled against a digital camera
●
Three modes
–
Preview
–
Still capture
–
Video
[5]

Android camera HAL v3
●
Very much not like v1
●
Not evolution based on v1
●
This is an entirely new API
●
Forget what you knew about v1

Android camera HAL v3
●
Based on capture requests, each of which
translate to a captured image in one or more
buffers
–
The full capture configuration is part of the request
●
User queues capture requests to the device
and receives completed requests back later on

HAL v3 image pipeline model
source: Google [2]
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