uvc英文版规范，研究无驱usb摄像头可参考一下USB_Video_Class_1.1.pdfUSB_Video_Example1.1.pdfUSB_Video_FAQ_1.1.pdfUSB_Video_Identifiers_1.1.pdfUSB_Video_Payload_DV_1.1.pdfUSB_Video_Payload_Frame_Based_1.1.pdfUSB_Video_Payload_MJPEG_1.1.pdfUSB_Video_Payload_MPEG-2_TS_1.1.pdfUSB_Video_Payload_Stream_Based_1.1.pdfUSB_Video_Payload_Uncompressed_1.