[Libav-user] send usb control transfer by ffmpeg api

N-Star 263397943 at qq.com
Thu May 3 13:17:57 EEST 2018

    Is there any api in ffmpeg which can send an usb control request? 
I can use the libusb's interface ( libusb_control_transfer() ) to accomplish this requirement, but this interface will cause the ffmpeg usb video streaming corrupt when i called it.
So, it is perfect if ffmpeg has such interface.
    The usb control request format is as:

    Best Regards
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