Getting raspberry pi camera working on android-rpi (not Android RT nor android-things)

[issam....@gmail.com]

Somehow I do not find a single post that explains how to get the camera working on Android build for Raspberry Pi (android 7.1.2)
I tested the doobell application on android-things but I would like to do the same for android image that I build myself from

https://github.com/android-rpi/device_brcm_rpi3 instructions

Enabling the default camera hal in the rpi3.mk causes some camera service crashes in a loop (refer to

https://github.com/android-rpi/device_brcm_rpi3/issues/95)

So I found an application from Android RT that just execute raspistill to take pictures using the official Rpi camera connected through the CSI port:

https://gitlab.com/emteria/public/samples_apps_PiCamera

This is where I decided to port the raspistill utility to use on my rpi android build 7.1.2
I took the code from https://github.com/raspberrypi/userland.git
I installed cmake, mae sure my compiler path was correct for g++-arm-linux-gnueabihf
And I managed to succesfully build the userland code.
Then I pushed the newly compiled raspistill and made it executable

adb push ./build/bin/raspistill /system/bin/

adb shell chmod +x /system/bin/raspistill

However when trying to execute raspistill I am getting the following error:
rpi3:/ #
/system/bin/raspistill                                                 
/system/bin/sh: /system/bin/raspistill: No such file or directoryQuestion: 
Has anyone succeeded in doing such a thing: getting the official rpi camera working on a build generated from https://github.com/android-rpi/device_brcm_rpi3
and if so, could you please explain how you did this

Best regards,

[John Wong]

Thank you for your work!I follow your instruction,and face the problem.And after google it,i found it is because there is missing many files in /lib folder,such as ld-linux-armhf.so.3,libm.so.6,etc.I have not resolve this problem yet.But when it is done,I will share the solution.

在 2017年10月30日星期一 UTC+8下午6:32:21，issam....@gmail.com写道：

[Issam Dridi]

Many thanks for looking at this, this is so nice of you. 

I will try to find some time to investigate as well.

Best regards,

Issam

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[John Wong]

After copy all needed files,run raspistill,and got follow message:

mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM)

mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)

mmal: Failed to create camera component

mmal: main: Failed to create camera component

mmal: Camera is not enabled in this build. Try running "sudo raspi-config" and ensure that "camera" has been enabled

and mmal_vc_diag camerainfo get follow message:

cameras  : 1

flashes  : 2

camera 0 : port 0: 3280 x 2464 lens absent

flash 0  : flash type LED

flash 1  : flash type LED

Any ideas?

在 2017年11月29日星期三 UTC+8下午5:45:32，Issam Dridi写道：

[issam....@gmail.com]

Hi John,

If you provide detailed step (which lib to copy and where you got them), I can try to reproduce and help you.

Also it seems that this is needed:
Add "start_x=1" and "gpu_mem=128" in /boot/config.txt.
As well as loading 
"modprobe bcm2835-v4l2"

When trying to use externql USB camera I ended adding this in kernel/rpi/arch/arm/configs/bcm2709_defconfig, but not sure this applies here:

CONFIG_VIDEO_DEV=y
CONFIG_VIDEO_V4L2_COMMON=y
CONFIG_VIDEO_MEDIA=y
CONFIG_USB_VIDEO_CLASS=y
CONFIG_V4L_USB_DRIVERS=y
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y

[John Wong]

Hi, Issam.Here is the detail step:

1、After buiding the userland,I remount the root folder and system folder to rw:

mount -o remount -rw /

mount -o remount -rw /system
2、copy all builded lib file to android /lib folder

adb push ./userland/build/lib *.* /lib

3、copy following files to android /lib folder,these files can be found in toolchain:

ld-linux-armhf.so.3

libc.so.6

lbrt.so.1

libpthread.so.0

libdl.so.2

libm.so.6

now we can run raspistill -o test.jpg,but unfortunately it still not working.

by the way,all files we coped will lost after reboot!

在 2017年12月1日星期五 UTC+8上午12:55:43，issam....@gmail.com写道：