From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 31 Oct 2018 14:58:08 +0000 (+0000)
Subject: media: videodev2: Add helper defines for printing FOURCCs
X-Git-Tag: accepted/tizen/unified/20190614.051536~485
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c3f4b15fcdca56a4f05eda5419d6d51ffbcb5e8c;p=platform%2Fkernel%2Flinux-rpi3.git

media: videodev2: Add helper defines for printing FOURCCs

New helper defines that allow printing of a FOURCC using
printf(V4L2_FOURCC_CONV, V4L2_FOURCC_CONV_ARGS(fourcc));

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---

diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 1aae2e4..9a860b2 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -82,6 +82,11 @@
 	((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24))
 #define v4l2_fourcc_be(a, b, c, d)	(v4l2_fourcc(a, b, c, d) | (1 << 31))
 
+#define V4L2_FOURCC_CONV "%c%c%c%c%s"
+#define V4L2_FOURCC_CONV_ARGS(fourcc) \
+	(fourcc) & 0x7f, ((fourcc) >> 8) & 0x7f, ((fourcc) >> 16) & 0x7f, \
+	((fourcc) >> 24) & 0x7f, (fourcc) & BIT(31) ? "-BE" : ""
+
 /*
  *	E N U M S
  */