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From 460f1e1402d28105f9f3d6e8b8739dcd89bff18e Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 31 Oct 2018 14:58:08 +0000
Subject: [PATCH] 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>
---
include/uapi/linux/videodev2.h | 5 +++++
1 file changed, 5 insertions(+)
--- 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) | (1U << 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
*/
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