Hi, all: I'm a newer of Linux developer, and I'm interesting in the UVC EU because I want to add my personal control for the camera(for example, zoom in/out, which the camera supports). what I have done is as follow: (1) Get the GUID of the device; (2) Modify the "usr/share/uvcdynctrl/data/ 046d/logitech.xml", and replace the GUID with the new GUID, VID, PID; (3) And I load the XML dynamically with the command "uvcdynctrl"
But it returns the error that: Unable to add control with GUID... So I'm wondering that is there any examples about how to add new control for the device? If no, what's the meaning of tag "selector", "index","size", where is the value comes from? <control id="logitech_video_raw_bpp"> <entity>UVC_GUID_LOGITECH_VIDEO_PIPE</entity> <selector>XU_RAW_DATA_BITS_PER_PIXEL</selector> <index>7</index> <size>1</size> If there is an example about how to add the new control, I will very appreciate for that!! Thanks for your attention!
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