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【技术讨论】
rk3399 uvc-gadget 异常
发表于 2019-6-28 17:09:37
浏览：7711
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回复：4
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usb3.0 做uvc. 用uvc-gadget 应用PC获取不到图像
下面是报文信息
/dev/video0: 4 buffers requested.
/dev/video0: buffer 0 exported with fd 5.
/dev/video0: buffer 1 exported with fd 6.
/dev/video0: buffer 2 exported with fd 7.
/dev/video0: buffer 3 exported with fd 8.
/dev/video4: 4 buffers requested.
/dev/video4: buffer 0 valid.
/dev/video4: buffer 1 valid.
/dev/video4: buffer 2 valid.
/dev/video4: buffer 3 valid.
[ 2017.251525] uvcg_queue_enable 283
[ 2017.324460] uvcg_video_pump 330
[ 2017.324773] uvc_video_encode_isoc 111
[ 2017.325119] uvc_video_encode_data 51
[ 2017.325557] uvcg_video_pump 330
[ 2017.325858] uvc_video_encode_isoc 111
[ 2017.326203] uvc_video_encode_data 51
[ 2017.326573] uvcg_video_pump 330
[ 2017.326874] uvc_video_encode_isoc 111
[ 2017.327218] uvc_video_encode_data 51
[ 2017.327586] uvcg_video_pump 330
[ 2017.327886] uvc_video_encode_isoc 111
[ 2017.328231] uvc_video_encode_data 51
[ 2017.328597] uvcg_video_pump 312
[ 2017.357910] uvcg_video_pump 312
[ 2017.391567] uvcg_video_pump 312
Stopping video stream.
[ 2018.393847] VS request completed with status -104.
[ 2018.394622] VS request completed with status -104.
[ 2018.395063] VS request completed with status -104.
[ 2018.395544] VS request completed with status -104.
[ 2018.395994] uvcg_queue_enable 292
[ 2037.979188] configfs-gadget gadget: uvc_function_set_alt(1, 0)
Stopping video stream.
[ 2037.981121] uvcg_queue_enable 292
bRequestType a1 bRequest 87 wValue 1400 wIndex 0100 wLength 000a
control request (req 87 cs 14)
bRequestType a1 bRequest 81 wValue 0200 wIndex 0000 wLength 0001
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