New helper function char *v4l2_fourcc2s(u32 fourcc, char *buf)
that converts a fourcc into a nice printable version.
Signed-off-by: Dave Stevenson <dave.steven...@raspberrypi.org>
---
drivers/media/v4l2-core/v4l2-common.c | 18 ++++++++++++++++++
include/media/v4l2-common.h | 3 +++
2 files changed, 21 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-common.c
b/drivers/media/v4l2-core/v4l2-common.c
index a5ea1f5..0219895 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -405,3 +405,21 @@ void v4l2_get_timestamp(struct timeval *tv)
tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
}
EXPORT_SYMBOL_GPL(v4l2_get_timestamp);
+
+char *v4l2_fourcc2s(u32 fourcc, char *buf)
+{
+ buf[0] = fourcc & 0x7f;
+ buf[1] = (fourcc >> 8) & 0x7f;
+ buf[2] = (fourcc >> 16) & 0x7f;
+ buf[3] = (fourcc >> 24) & 0x7f;
+ if (fourcc & (1 << 31)) {
+ buf[4] = '-';
+ buf[5] = 'B';
+ buf[6] = 'E';
+ buf[7] = '\0';
+ } else {
+ buf[4] = '\0';
+ }
+ return buf;
+}
+EXPORT_SYMBOL_GPL(v4l2_fourcc2s);
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index aac8b7b..5b0fff9 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -264,4 +264,7 @@ const struct v4l2_frmsize_discrete
*v4l2_find_nearest_format(
void v4l2_get_timestamp(struct timeval *tv);
+#define V4L2_FOURCC_MAX_SIZE 8
+char *v4l2_fourcc2s(u32 fourcc, char *buf);
+
#endif /* V4L2_COMMON_H_ */
--
2.7.4
