Commit 8865c537 authored by Ricardo Ribalda's avatar Ricardo Ribalda Committed by Mauro Carvalho Chehab
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media: uvcvideo: Increase the size of UVC_METADATA_BUF_SIZE 



Hans has discovered that in his test device, for the H264 format
bytesused goes up to about 570, for YUYV it will actually go up
to a bit over 5000 bytes, and for MJPG up to about 2706 bytes.

We should also, according to V4L2_META_FMT_UVC docs, drop headers when
the buffer is full.

Credit-to: Hans Verkuil <hverkuil@xs4all.nl>

Reviewed-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarRicardo Ribalda <ribalda@chromium.org>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent e3f60e7e

drivers/media/usb/uvc/uvcvideo.h

+1 −1
Original line number Diff line number Diff line
@@ -524,7 +524,7 @@ struct uvc_stats_stream { 
	unsigned int max_sof;		/* Maximum STC.SOF value */

};



#define UVC_METADATA_BUF_SIZE 1024

#define UVC_METADATA_BUF_SIZE 10240



/**

 * struct uvc_copy_op: Context structure to schedule asynchronous memcpy