diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2023-09-26 16:43:32 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-01-17 19:36:59 +0200 |
| commit | 0d99f2de13faccf199e6c9e806702cb21d0b6c24 (patch) | |
| tree | fa0aa5257a2542de2e56708d45d110f5656bb9f3 | |
| parent | df770d4b0a6dc11569beb225b7f47aaaa3863269 (diff) | |
libcamera: v4l2_subdevice: Enable streams API when supported
The streams API needs to be enabled explictly by setting a subdev client
capability. Do so unconditionally for subdevs that expose streams
support. We don't need any kernel version check to use the
VIDIOC_SUBDEV_S_CLIENT_CAP ioctl, as it is guaranteed to be supported by
kernels that support streams.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
| -rw-r--r-- | src/libcamera/v4l2_subdevice.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp index 15e8206a..75ad11e5 100644 --- a/src/libcamera/v4l2_subdevice.cpp +++ b/src/libcamera/v4l2_subdevice.cpp @@ -359,6 +359,21 @@ int V4L2Subdevice::open() return ret; } + /* If the subdev supports streams, enable the streams API. */ + if (caps_.hasStreams()) { + struct v4l2_subdev_client_capability clientCaps{}; + clientCaps.capabilities = V4L2_SUBDEV_CLIENT_CAP_STREAMS; + + ret = ioctl(VIDIOC_SUBDEV_S_CLIENT_CAP, &clientCaps); + if (ret < 0) { + ret = -errno; + LOG(V4L2, Error) + << "Unable to set client capabilities: " + << strerror(-ret); + return ret; + } + } + return 0; } |