Hi,
On Monday 30 August 2010 19:53:13 Palmax Maverick wrote:
Hello,
I'm trying to understand uvc_set_video_ctrl (
http://lxr.linux.no/linux+v2.6.35/drivers/media/video/uvc/uvc_video.c#L209
), that its a function for sending and receiving controls.
I don't know why do you use put_unaligned_le32 for dwMaxVideoFrameSize
and dwMaxPayloadTransferSize (these parameters are explained at the
table 4-47 of UVC especification pdf).
Because the fields are not aligned to a 32-bit boundary in memory. Platforms
that can't handle unaligned access (such as ARM) need the put_unaligned_le32
macro.
--
Regards,
Laurent Pinchart
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