Merge pull request #17 from recogni/master

Fix window preview window close by

add record video while streaming in GUI

fix the bug of change resolution loss GUI control -> mmap share memory before fork

add resolution, frame rate ctrl in GUI, FIXME: after turning camera view off, stream process turn off and share memory no longer work except EXIT?

add mjpeg support for ar1335 4k, use $./leopard_cam -s 4056x3120 -n 10 2> /dev/null

add socket for fd sharing between two processes. FIXME: OV580 read&write still didn't update results in GUI

add ov580 cbs api ctrls in the 3rd tab

put device information in menu bar, move some widgets location, fix the bug when using options device information listed is not updated, fix the bug of leaving dangling udev_device after udev calls

add Docker support

version number read from CHANGELOG.md instead of hard coded

use lambda to accelerate isp pipeline

add more OpenCV CUDA support functions

add OV580-ST support

add more OpenCV CUDA support functions for ISP