Using V4L2 the (Video4 linux2), programming, development board video surveillance. Development board USB external camera, run the program on the screen to see the real-time monitoring screen. V4L2 video device as a file. Open the device file, get the equipment Capability detection video equipment supports standard, and then set the video capture mode (collection) of the memory-mapped image data captured using the YUV format conversion algorithm for RGB format for processing, after processing The image data cycle into the the queue cache and re-capture the next video data.

video_capture\main.cpp
.............\main.o
.............\Makefile
.............\moc_showvideo.cpp
.............\moc_showvideo.o
.............\showvideo.cpp
.............\showvideo.h
.............\showvideo.o
.............\videodevice.cpp
.............\videodevice.h
.............\videodevice.o
.............\video_capture
.............\video_capture.pro
video_capture

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