uvc maximum payload transfer size | Cypress Semiconductor
uvc maximum payload transfer size
I just got a question with FX3 uvc camera:we have 48K uvc stream buffer size,it commits (48K-16+12)49148bytes each time,and the maximum payload size is 48K(defined in probe setting),in this case it works well.
Since the probe setting just defines the maximum payload size,so i thought i could change this size to 32K,in this case i still could get video data from bushound,and it matched the frame size(1280*480,YUY2 format,in my test),but i could not get the video...Attach the bushound log.
You can see the commited buffer went with 32768-16380-32768-16380...,through usb ,and the total size is ,25*(32768+16380-12)+(412-12)=1228800,which matched the resolution 1280*480*2,but i could not get the 1280*480 video stream,i just want to know why?Thanks,