Android UVC front Camera issue in Android 8

[Ketki]

Hi , 

I am using imx6Q with Android 8.0.
I have managed to work uvc camera Logitech C525 with the setup .
The issue is I get a mirrored image and to get the desired image I have to use it as front camera.
I have modified init.rc to configure the camera as front camera.

setprop back_camera_name 0
setprop front_camera_name uvc 

After this change my camera doesn't work at all and I get the following error in the logcat :

292-292/? I/chatty: uid=1047(cameraserver) /system/bin/cameraserver expire 3 lines
292-292/? W//system/bin/cameraserver: Waited one second for android.hardware.camera.provider@2.4::ICameraProvider/legacy/0. Waiting another...
10007-10007/? I/android.hardware.camera.provider@2.4-service: Camera provider Service is starting.
10007-10007/? I/vndksupport: sphal namespace is not configured for this process. Loading /vendor/lib/hw/android.hardware.camera.provider@2.4-impl.so from the current namespace instead.
10007-10007/? I/vndksupport: sphal namespace is not configured for this process. Loading /vendor/lib/hw/camera.imx6.so from the current namespace instead.
10007-10007/? I/FslCameraHAL: enumSensorSet
10007-10007/? I/FslCameraHAL: matchDevNodes
10007-10007/? I/FslCameraHAL: getNodeName: dev path:/dev/video1
10007-10007/? I/FslCameraHAL: getNodeName: node name:uvcvideo
10007-10007/? I/FslCameraHAL: getNodeName CHIP_IDENT dev path:/dev/video1 failed
10007-10007/? I/FslCameraHAL: getNodeNames: node name:uvcvideo,HD Webcam C525
10007-10007/? I/FslCameraHAL: getNodeName: dev path:/dev/video17
10007-10007/? W/FslCameraHAL: getNodeName dev path:/dev/video17 is not capture
10007-10007/? I/FslCameraHAL: getNodeName: dev path:/dev/video0
10007-10007/? W/FslCameraHAL: getNodeName open dev path:/dev/video0 failed:Try again
10007-10007/? I/FslCameraHAL: getNodeName: dev path:/dev/video16
10007-10007/? W/FslCameraHAL: getNodeName open dev path:/dev/video16 failed:Permission denied
10007-10007/? I/FslCameraHAL: matchPropertyName: index:0, 0
10007-10007/? I/FslCameraHAL: matchPropertyName: index:1, uvc
10007-10007/? I/FslCameraHAL: index:1, propName:uvc
10007-10007/? I/FslCameraHAL: matchNodeName
10007-10007/? I/FslCameraHAL: matchNodeName: sensor:uvcvideo,HD Webcam C525, dev:/dev/video1, node:uvc, index:1
10007-10007/? I/FslCameraHAL: Camera ID 1: name uvcvideo,HD Webcam C525, Facing 1, orientation 0, dev path /dev/video1
10007-10007/? I/FslCameraHAL: create id:1 usb camera device
10007-10007/? I/FslCameraHAL: newInstance usb sensor name:uvcvideo,HD Webcam C525
10007-10007/? I/FslCameraHAL: newInstance usb sensor:uvcvideo,HD Webcam C525 use standard UVC device
10007-10007/? I/FslCameraHAL: Camera:1: new camera device
10007-10007/? I/FslCameraHAL: camera number is 1
10007-10007/? I/CamProvider@2.4-impl: Loaded "Default Camera HAL" camera module
10007-10007/? I/FslCameraHAL: getCameraInfo: camera id 0: info=0xbefa5598
10007-10007/? E/FslCameraHAL: getCameraInfo: Invalid camera id 0
10007-10007/? E/CamProvider@2.4-impl: initialize: Camera info query failed!
10007-10007/? E/CamProvider@2.4-impl: HIDL_FETCH_ICameraProvider: camera provider init failed!
10007-10007/? E/android.hardware.camera.provider@2.4-service: Could not get passthrough implementation for android.hardware.camera.provider@2.4::ICameraProvider/legacy/0.

[IvanRuiz]

Hello,

Since it is a web camera you will of course get a mirrored image. Nevertheless, you may refer to the driver V4L2 IOCT- IPU_ROTATE_HORIZ_FLIP in the i.MX6Q BSP to flip the image horizontally.

Hope it helps!

BR,

Ivan.

[Ketki]

Hi Ivan , 

Thank You for your reply.

Previously I used Android 7.1 (Nougat) and to fix this issue I modified the camera.h file and changed the parameter CAMERA_FACING_BACK = 1; from its default value 0. So now my back camera was mirror and was similar to front camera facing showing exact image.

When I try the same with Android 8.0 it doesn't work . 
Can you please tell me in detail where the orientation is set in Android 8.0

[IvanRuiz]

Hello,

Instead of modifying directly from the camera, you may try to flip the image horizontally as I already mentioned. The driver is available in the BSP.

Hope it helps!

BR,

Ivan.