Add subdev callbacks for setting up parameters of frame on media bus that
are not exposed to user space directly. This is more a stub containing
only parameters needed to setup V4L2_MBUS_FMT_VYUY_JPEG_I1_1X8 data
transmision and the associated frame embedded data.
The @length field of struct v4l2_frame_config determines maximum number
of frame samples per frame, excluding embedded non-image data.
@header_length and @footer length determine the size in bytes of data
embedded at frame beginning and end respectively.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
include/media/v4l2-subdev.h | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index be74061..bd95f00 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -21,6 +21,7 @@
#ifndef _V4L2_SUBDEV_H
#define _V4L2_SUBDEV_H
+#include <linux/types.h>
#include <linux/v4l2-subdev.h>
#include <media/media-entity.h>
#include <media/v4l2-common.h>
@@ -45,6 +46,7 @@ struct v4l2_fh;
struct v4l2_subdev;
struct v4l2_subdev_fh;
struct tuner_setup;
+struct v4l2_frame_config;
/* decode_vbi_line */
struct v4l2_decode_vbi_line {
@@ -476,6 +478,10 @@ struct v4l2_subdev_pad_ops {
struct v4l2_subdev_crop *crop);
int (*get_crop)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_crop *crop);
+ int (*set_frame_config)(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_frame_config *fc);
+ int (*get_frame_config)(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_frame_config *fc);
};
struct v4l2_subdev_ops {
@@ -567,6 +573,18 @@ struct v4l2_subdev_fh {
#define to_v4l2_subdev_fh(fh) \
container_of(fh, struct v4l2_subdev_fh, vfh)
+/**
+ * struct v4l2_frame_config - media bus data frame configuration
+ * @length: maximum number of media bus samples per frame
+ * @header_length: size of embedded data at frame start (header)
+ * @footer_length: size of embedded data at frame end (footer)
+ */
+struct v4l2_frame_config {
+ size_t length;
+ size_t header_length;
+ size_t footer_length;
+};
+
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
static inline struct v4l2_mbus_framefmt *
v4l2_subdev_get_try_format(struct v4l2_subdev_fh *fh, unsigned int pad)
--
1.7.9
--
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