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 <[email protected]> Reviewed-by: Hans Verkuil <[email protected]> Signed-off-by: Ricardo Ribalda <[email protected]> Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
tprrt · Sep 30, 2021 · 8865c53 · 8865c53
1 parent e3f60e7
commit 8865c53
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
@@ -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