git.openwrt.org Git - openwrt/staging/yousong.git/blob

   1 From f776604fdd061358ccdc420ba8babcc6fbe76baa Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Wed, 31 Oct 2018 14:58:08 +0000
   4 Subject: [PATCH 196/703] media: videodev2: Add helper defines for printing
   5  FOURCCs
   6
   7 New helper defines that allow printing of a FOURCC using
   8 printf(V4L2_FOURCC_CONV, V4L2_FOURCC_CONV_ARGS(fourcc));
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  11 ---
  12  include/uapi/linux/videodev2.h | 5 +++++
  13  1 file changed, 5 insertions(+)
  14
  15 --- a/include/uapi/linux/videodev2.h
  16 +++ b/include/uapi/linux/videodev2.h
  17 @@ -82,6 +82,11 @@
  18         ((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24))
  19  #define v4l2_fourcc_be(a, b, c, d)     (v4l2_fourcc(a, b, c, d) | (1 << 31))
  20
  21 +#define V4L2_FOURCC_CONV "%c%c%c%c%s"
  22 +#define V4L2_FOURCC_CONV_ARGS(fourcc) \
  23 +       (fourcc) & 0x7f, ((fourcc) >> 8) & 0x7f, ((fourcc) >> 16) & 0x7f, \
  24 +       ((fourcc) >> 24) & 0x7f, (fourcc) & BIT(31) ? "-BE" : ""
  25 +
  26  /*
  27   *     E N U M S
  28   */