Linux內核中已經帶有很完善的USB攝像頭驅動,支持幾乎所有的USB攝像頭,我們只需要配置內核,選擇上相應的Sensor型號即可。
配置內核,支持USB攝像頭:
- Device Drivers --->
- <*> Multimedia support --->
- <*> Video For Linux
- [*] Enable Video For Linux API 1 (DEPRECATED)
- [*] Video capture adapters --->
- [*] V4L USB devices --->
- <*> USB Video Class (UVC)
- [*] UVC input events device support
- [*] GSPCA based webcams --->
到這裏,我們就可以選擇所需要的USB攝像頭驅動,當然也可以選擇所有的USB攝像頭驅動支持(這樣編譯出的內核會比較大)
GSPCA是一個萬能攝像頭驅動程序,進入GSPCA based webcams進行選擇。
插入USB攝像頭(我使用的UVC攝像頭),會提示:
usb 1-1.1: new full speed USB device using s3c2410-ohci and address 3
usb 1-1.1: New USB device found, idVendor=0ac8, idProduct=3450
usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-1.1: Product: Deasy USB2.0 Camera
usb 1-1.1: Manufacturer: Vimicro Corp.
uvcvideo: Found UVC 1.00 device Deasy USB2.0 Camera (0ac8:3450)
input: Deasy USB2.0 Camera as
/devices/platform/s3c2410-ohci/usb1/1-1/1-1.1/1-1.1:1.0/input/input3
它的設備名稱是:/dev/video0
USB攝像頭一般都是基於V4L2架構的,需要編寫V4L2架構的程序來操作攝像頭