summaryrefslogtreecommitdiff
path: root/include/media
diff options
context:
space:
mode:
authorHans Verkuil <hans.verkuil@cisco.com>2018-01-22 03:58:36 -0500
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2018-02-22 12:25:33 -0500
commit672de9a79cd34c864f5eca7de5264b2645212605 (patch)
treedc33ed580962efb7fdaa0e3bd8b232709a8374f0 /include/media
parent7c8a940a5ea0b0861a566f02b67be75d8d86df36 (diff)
media: v4l2-common: create v4l2_g/s_parm_cap helpers
Create helpers to handle VIDIOC_G/S_PARM by querying the g/s_frame_interval v4l2_subdev ops. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-common.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index e0d95a7c5d48..f3aa1d728c0b 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -341,4 +341,30 @@ v4l2_find_nearest_format(const struct v4l2_frmsize_discrete *sizes,
*/
void v4l2_get_timestamp(struct timeval *tv);
+/**
+ * v4l2_g_parm_cap - helper routine for vidioc_g_parm to fill this in by
+ * calling the g_frame_interval op of the given subdev. It only works
+ * for V4L2_BUF_TYPE_VIDEO_CAPTURE(_MPLANE), hence the _cap in the
+ * function name.
+ *
+ * @vdev: the struct video_device pointer. Used to determine the device caps.
+ * @sd: the sub-device pointer.
+ * @a: the VIDIOC_G_PARM argument.
+ */
+int v4l2_g_parm_cap(struct video_device *vdev,
+ struct v4l2_subdev *sd, struct v4l2_streamparm *a);
+
+/**
+ * v4l2_s_parm_cap - helper routine for vidioc_s_parm to fill this in by
+ * calling the s_frame_interval op of the given subdev. It only works
+ * for V4L2_BUF_TYPE_VIDEO_CAPTURE(_MPLANE), hence the _cap in the
+ * function name.
+ *
+ * @vdev: the struct video_device pointer. Used to determine the device caps.
+ * @sd: the sub-device pointer.
+ * @a: the VIDIOC_S_PARM argument.
+ */
+int v4l2_s_parm_cap(struct video_device *vdev,
+ struct v4l2_subdev *sd, struct v4l2_streamparm *a);
+
#endif /* V4L2_COMMON_H_ */