USB video device class (UVC)

環境：
Android: 4.4
Kernel:3.0.35
iMX6Q

Kernel Setting:
    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
ref: USB devices with android
據說 Andrid 4.0 以上才有支援UVC

camera: AG5012F17-L1-3K0

在Samsung Tab S(4.4) --不能work
在Sony Tab Z2(4.4)   --能work的
可以用CameraFi來test :)


環境：
Android: 6.0
Kernel:4.4.x

UpBoard

Kernel Setting:
    CONFIG_VIDEO_V4L2_COMMON=y
    CONFIG_VIDEO_MEDIA=y
    CONFIG_USB_VIDEO_CLASS=y
    CONFIG_V4L_USB_DRIVERS=y
    CONFIG_USB_CONFIGFS=y
    CONFIG_USB_GADGETFS=y
    CONFIG_USB_CONFIGFS_F_UVC=y
    CONFIG_USB_G_WEBCAM=y

    CONFIG_USB_STKWEBCAM=y