shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-11 05:17:10 +09:00
Code Issues Packages Projects Releases Wiki Activity

BACKPORT: [media] v4l: Add metadata buffer type and format

Browse Source 
The metadata buffer type is used to transfer metadata between userspace
and kernelspace through a V4L2 buffers queue. It comes with a new
metadata capture capability and format description.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: removed left-over 'experimental' note]
[hans.verkuil@cisco.com: add newline after _v4l2-meta-format label]

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit fb9ffa6a7f)

 Conflicts:
	Documentation/media/uapi/v4l/buffer.rst
	Documentation/media/uapi/v4l/devices.rst
	Documentation/media/uapi/v4l/vidioc-querycap.rst
	Documentation/media/videodev2.h.rst.exceptions
	drivers/media/v4l2-core/v4l2-dev.c
	drivers/media/v4l2-core/videobuf2-v4l2.c
	include/media/v4l2-ioctl.h

Deleted the documentation, as 4.4 is before the conversion to rst.

BUG=b:66317170
TEST=compile

Change-Id: Id43757c0a0b1f34e10d17e5345f89ded25503d13
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/676767
Reviewed-by: Ricky Liang <jcliang@chromium.org>
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
This commit is contained in:
Laurent Pinchart
2016-04-12 19:40:46 -03:00
committed by Tao Huang
parent 0e764df617
commit 98781fa62b
6 changed files with 85 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/media/v4l2-ioctl.h
View File

@@ -38,6 +38,8 @@ struct v4l2_ioctl_ops {
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_meta_cap)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
/* VIDIOC_G_FMT handlers */
int (*vidioc_g_fmt_vid_cap) (struct file *file, void *fh,
@@ -64,6 +66,8 @@ struct v4l2_ioctl_ops {
struct v4l2_format *f);
int (*vidioc_g_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_meta_cap)(struct file *file, void *fh,
struct v4l2_format *f);
/* VIDIOC_S_FMT handlers */
int (*vidioc_s_fmt_vid_cap) (struct file *file, void *fh,
@@ -90,6 +94,8 @@ struct v4l2_ioctl_ops {
struct v4l2_format *f);
int (*vidioc_s_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_meta_cap)(struct file *file, void *fh,
struct v4l2_format *f);
/* VIDIOC_TRY_FMT handlers */
int (*vidioc_try_fmt_vid_cap) (struct file *file, void *fh,
@@ -116,6 +122,8 @@ struct v4l2_ioctl_ops {
struct v4l2_format *f);
int (*vidioc_try_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_meta_cap)(struct file *file, void *fh,
struct v4l2_format *f);
/* Buffer handlers */
int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);

1
include/trace/events/v4l2.h
View File

@@ -29,6 +29,7 @@
EM( V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, "VIDEO_OUTPUT_MPLANE" ) \
EM( V4L2_BUF_TYPE_SDR_CAPTURE, "SDR_CAPTURE" ) \
EM( V4L2_BUF_TYPE_SDR_OUTPUT, "SDR_OUTPUT" ) \
EM( V4L2_BUF_TYPE_META_CAPTURE, "META_CAPTURE" ) \
EMe(V4L2_BUF_TYPE_PRIVATE, "PRIVATE" )
SHOW_TYPE

13
include/uapi/linux/videodev2.h
View File

@@ -146,6 +146,7 @@ enum v4l2_buf_type {
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10,
V4L2_BUF_TYPE_SDR_CAPTURE = 11,
V4L2_BUF_TYPE_SDR_OUTPUT = 12,
V4L2_BUF_TYPE_META_CAPTURE = 13,
/* Deprecated, do not use */
V4L2_BUF_TYPE_PRIVATE = 0x80,
};
@@ -438,6 +439,7 @@ struct v4l2_capability {
#define V4L2_CAP_SDR_CAPTURE 0x00100000 /* Is a SDR capture device */
#define V4L2_CAP_EXT_PIX_FORMAT 0x00200000 /* Supports the extended pixel format */
#define V4L2_CAP_SDR_OUTPUT 0x00400000 /* Is a SDR output device */
#define V4L2_CAP_META_CAPTURE 0x00800000 /* Is a metadata capture device */
#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */
#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */
@@ -2026,6 +2028,16 @@ struct v4l2_sdr_format {
__u8 reserved[24];
} __attribute__ ((packed));
/**
* struct v4l2_meta_format - metadata format definition
* @dataformat: little endian four character code (fourcc)
* @buffersize: maximum size in bytes required for data
*/
struct v4l2_meta_format {
__u32 dataformat;
__u32 buffersize;
} __attribute__ ((packed));
/**
* struct v4l2_format - stream data format
* @type: enum v4l2_buf_type; type of the data stream
@@ -2045,6 +2057,7 @@ struct v4l2_format {
struct v4l2_vbi_format vbi; /* V4L2_BUF_TYPE_VBI_CAPTURE */
struct v4l2_sliced_vbi_format sliced; /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */
struct v4l2_sdr_format sdr; /* V4L2_BUF_TYPE_SDR_CAPTURE */
struct v4l2_meta_format meta; /* V4L2_BUF_TYPE_META_CAPTURE */
__u8 raw_data[200]; /* user-defined */
} fmt;
};