diff options
| author | Hans Verkuil | 2018-05-21 10:54:44 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2018-08-31 17:16:57 +0200 |
| commit | 62fed26ff4338eeccc702799be358bbb1471b76c (patch) | |
| tree | ea4a6ce0251a918d97b18fbd5de0277359491d86 /include/uapi/linux/videodev2.h | |
| parent | media: vb2: drop VB2_BUF_STATE_PREPARED, use bool prepared/synced instead (diff) | |
| download | kernel-qcow2-linux-62fed26ff4338eeccc702799be358bbb1471b76c.tar.gz kernel-qcow2-linux-62fed26ff4338eeccc702799be358bbb1471b76c.tar.xz kernel-qcow2-linux-62fed26ff4338eeccc702799be358bbb1471b76c.zip | |
media: videodev2.h: Add request_fd field to v4l2_buffer
When queuing buffers allow for passing the request that should
be associated with this buffer.
If V4L2_BUF_FLAG_REQUEST_FD is set, then request_fd is used as
the file descriptor.
If a buffer is stored in a request, but not yet queued to the
driver, then V4L2_BUF_FLAG_IN_REQUEST is set.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'include/uapi/linux/videodev2.h')
| -rw-r--r-- | include/uapi/linux/videodev2.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index ec62d376ba61..2350151ce4ea 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -917,6 +917,7 @@ struct v4l2_plane { * @length: size in bytes of the buffer (NOT its payload) for single-plane * buffers (when type != *_MPLANE); number of elements in the * planes array for multi-plane buffers + * @request_fd: fd of the request that this buffer should use * * Contains data exchanged by application and driver using one of the Streaming * I/O methods. @@ -941,7 +942,10 @@ struct v4l2_buffer { } m; __u32 length; __u32 reserved2; - __u32 reserved; + union { + __s32 request_fd; + __u32 reserved; + }; }; /* Flags for 'flags' field */ @@ -959,6 +963,8 @@ struct v4l2_buffer { #define V4L2_BUF_FLAG_BFRAME 0x00000020 /* Buffer is ready, but the data contained within is corrupted. */ #define V4L2_BUF_FLAG_ERROR 0x00000040 +/* Buffer is added to an unqueued request */ +#define V4L2_BUF_FLAG_IN_REQUEST 0x00000080 /* timecode field is valid */ #define V4L2_BUF_FLAG_TIMECODE 0x00000100 /* Buffer is prepared for queuing */ @@ -977,6 +983,8 @@ struct v4l2_buffer { #define V4L2_BUF_FLAG_TSTAMP_SRC_SOE 0x00010000 /* mem2mem encoder/decoder */ #define V4L2_BUF_FLAG_LAST 0x00100000 +/* request_fd is valid */ +#define V4L2_BUF_FLAG_REQUEST_FD 0x00800000 /** * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor |