From fb9ffa6a7f7ef39cc0f14f417b66411be5492512 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 12 Apr 2016 19:40:46 -0300 Subject: [media] v4l: Add metadata buffer type and format 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 Tested-by: Guennadi Liakhovetski Acked-by: Sakari Ailus Acked-by: Hans Verkuil [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 --- include/uapi/linux/videodev2.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 8d351f5df2aa..7078deef2c64 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -143,6 +143,7 @@ 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, }; @@ -451,6 +452,7 @@ 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 */ @@ -2085,6 +2087,16 @@ 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 @@ -2104,6 +2116,7 @@ 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; }; -- cgit v1.2.3-59-g8ed1b