Hello Laurent
I replied to your last email but it 'mailman' is holding
it because it is far too big. Just to give you an update
on something that I realized:
> What bothers me in the trace is
>
> May 28 10:53:28 lapsystemx kernel: uvcvideo: Dropping payload (out of sync).
> May 28 10:53:59 lapsystemx last message repeated 30784 times
> May 28 10:55:00 lapsystemx last message repeated 60992 times
> May 28 10:55:24 lapsystemx last message repeated 24351 times
>
> The "out of sync" message means that the device didn't toggle the FID bit.
> Quirk 0x10 is supposed to work around that by ignoring the FID bit.
in the following bit of code from
static void uvc_video_decode_end(...
if (data[1] & UVC_STREAM_EOF && buf->buf.bytesused != 0)
-------------
{
uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
if (data[0] == len)
uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n");
buf->state = UVC_BUF_STATE_DONE;
if (video->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
video->last_fid ^= UVC_STREAM_FID;
}
last_fid is toggled ->only<- if the appropriate bit of data[1] is
set (UVC_STREAM_EOF) which will never happen since UVC_STREAM_EOF
is always zero (on the crystal eye webcam).
Bruce
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