So it can be used to get the default value of a control.
Without this change it is not possible to get get the
default value of array controls.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
---
include/uapi/linux/videodev2.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 72fa3e490e30..2e857b19a155 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1461,7 +1461,10 @@ struct v4l2_ext_control {
} __attribute__ ((packed));
struct v4l2_ext_controls {
- __u32 ctrl_class;
+ union {
+ __u32 ctrl_class;
+ __u32 which;
+ };
__u32 count;
__u32 error_idx;
__u32 reserved[2];
@@ -1472,6 +1475,8 @@ struct v4l2_ext_controls {
#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL)
#define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)
#define V4L2_CTRL_MAX_DIMS (4)
+#define V4L2_CTRL_WHICH_CUR_VAL 0
+#define V4L2_CTRL_WHICH_DEF_VAL 0x0f000000
enum v4l2_ctrl_type {
V4L2_CTRL_TYPE_INTEGER = 1,
--
2.5.0
--
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