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media: uvcvideo: Increase the size of UVC_METADATA_BUF_SIZE

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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: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Ricardo Ribalda 2021-06-18 14:29:14 +02:00 committed by Mauro Carvalho Chehab
parent e3f60e7e1a
commit 8865c53703
1 changed files with 1 additions and 1 deletions
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2
drivers/media/usb/uvc/uvcvideo.h
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@ -524,7 +524,7 @@ struct uvc_stats_stream {
unsigned int max_sof; /* Maximum STC.SOF value */ 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 * struct uvc_copy_op: Context structure to schedule asynchronous memcpy