Logitech QuickCam Pro 4000 on x86 android

Yuv420 data can be obtained from webcam through ioctl.
Before encoded to jpeg image the yuv420 data needs to be converted to yuyv, i.e. yuv 4:2:2 format.
Since converter and encoder are ready, jpeg image can be produced.
However the preview can't be seen because it could probably be turned off in gingerbread-x86 while it is turned on in froyo-x86  but causes errors.
Working on preview function.

• yuv420 to yuyv colorspace converter migrated from guvcview to android.
• jpeg encoder migrated from guvcview to android.
• picture functions.
• working on preview function.