Hi All,
I'm trying to get to the bottom of the camera issues that some austin devices are having.
To be clear, I am not a developer, but I do happen to have two
notionally identical austin tablets.
Both tablets' cameras (still and video) work perfectly under FireOS. but under LOS14.1 their behaviour differs:
- Austin Tablet A: both still (not video) cameras function correctly in @ggow 's latest 14.1LOS build
- Austin Tablet B: Neither still (nor video) cameras function correctly in latest 14.1LOS build. (crashes camera app)
This is with an identical clean LOS14.1 install on both devices... really odd.
Having taken the back off the tablets I made an interesting discovery:
It seems that austin tablets have different camera modules installed! (may be true of Ford too)
this would probably explain the behaviour differences people (myself included) are seeing with the cameras on these tablets.
Anyway, if anyone's interested
Tablet A with the working camera has the following written on the rear facing camera:
BLX2509H-
A1916-B
V1.0 5.6
Tablet B, the one with non-working cameras has the following written on the rear facing camera:
G7P2-ZA
1916BHQ-
2355N
V2
I've only checked the rear facing camera, as they're the easiest to access, but I expect the same is true for the front facing one too...
I suspect
@ggow has a tablet similar to my Tablet A, and hence has setup the LOS14.1 ROM to work with the camera modules in that, but the modules in TabletB, are sufficiently different for this not to work. Just to prove the point, I temporarily swapped the rear camera from TabletA and put it in Tablet B, and that works fine in the camera app!
I expect there must be some configuration data required that's either not being read correctly (or at all) from the camera EEPROM, or not being passed to the camera app correctly.
From the logcat (snippet below, let me know if you want to see this) I've just dumped from Tablet B when the camera app crashes, the backtrace points at
which seems to be related to camera settings...
Code:
[ 12-01 10:21:05.321 2836: 2836 F/DEBUG ]
#00 pc 000101a6 /system/lib/lib3a.so (_ZN4NS3A6AeAlgo19getAEPLineMappingIDE15LIB3A_AE_MODE_TP10eAETableIDi+217)
[ 12-01 10:21:05.321 2836: 2836 F/DEBUG ]
#01 pc 000102cd /system/lib/lib3a.so (_ZN4NS3A6AeAlgo9setAEModeE15LIB3A_AE_MODE_T+84)
[ 12-01 10:21:05.321 2836: 2836 F/DEBUG ]
#02 pc 00014b05 /system/lib/lib3a.so (_ZN4NS3A6AeAlgo6initAEEPK18AE_INITIAL_INPUT_TP11strAEOutputP15AE_STAT_PARAM_T+220)
It's at this point that my limited knowledge runs out...
Is there anything I can extract from TabletB running FireOS that can be grafted into a LOS14.1 image to get it working?
Or can lib3a.so be patched to do the right thing with different cameras?
Happy for pointers in the right direction!
Cheers,
Graysters
here's the output:
