最終更新:2017-04-04 (火) 08:09:32 (2573d)  

VIDIOC_QUERYCAP
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Query device capabilities

https://static.lwn.net/kerneldoc/media/uapi/v4l/vidioc-querycap.html

https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/vidioc-querycap.html

 #define VIDIOC_QUERYCAP          _IOR('V',  0, struct v4l2_capability)

v4l2-ctl 

  • -D, --info         show driver info [VIDIOC_QUERYCAP]
    Driver Info (not using libv4l2):
	Driver name   : uvcvideo
	Card type     : Integrated Camera
	Bus info      : usb-0000:00:14.0-3
	Driver version: 4.4.13
	Capabilities  : 0x84200001
		Video Capture
		Streaming
		Extended Pix Format
		Device Capabilities
	Device Caps   : 0x04200001
		Video Capture
		Streaming
		Extended Pix Format



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