IPA modules may require configuration files, which may be stored in
different locations in the file system. To standardize file locations
between all IPAs and pipeline handlers, provide a helper function to
locate a configuration file by searching in the following directories:
- All directories specified in the LIBCAMERA_IPA_CONFIG_PATH environment
variable ; or
- In the source tree if libcamera is not installed ; otherwise
- In standard system locations (etc and share directories).
When stored in the source tree, configuration files shall be located in
a 'data' subdirectory of their respective IPA directory.
More locations, or extensions to the mechanism, may be implemented
later.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add two new operations to the IPA interface to start and stop it. The
intention is that these functions shall be used by the IPA to perform
actions when the camera is started and stopped.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
The IPAInterface::configure() operation receives a map of ControlInfoMap
instances. Pass const references instead to avoid copies when not
required (the callee can still make manual copies), and to allow for the
future serialization layer to keep references to the original object.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Comply with the coding style by removing lots of unneeded semicolons.
Fix a few other coding style violations on the lines touched by those
fixes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
The ControlInfoMap and V4L2ControlInfoMap classes are very similar, with
the latter adding convenience accessors based on numerical IDs for the
former, as well as a cached idmap. Both features can be useful for
ControlInfoMap in the context of serialisation, and merging the two
classes will further simplify the IPA API.
Import all the features of V4L2ControlInfoMap into ControlInfoMap,
turning the latter into a real class. A few new constructors and
assignment operators are added for completeness.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
The IPA interface needs to support interactions with the pipeline; add
interfaces to control the sensor and handling of request ISP parameters
and statistics.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
If the IPAProxyLinux constructor fails to locate the proxy worker, the
socket_ and proc_ member pointers will be left uninitialised, leading
the a crash in the destructor. Initialise them both to nullptr.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
The ipa includes are located in include/libcamera/ipa/. This gives an
incorrect impression that they are a sub-part of the rest of the
libcamera API, while they are the API towards the IPA the same way that
include/libcamera/ contains the API towards applications. To clarify
this, move them to include/ipa/.
The IPA headers are however still part of libcamera, so installing them
to ${prefix}/include/ipa/ would make little sense. To fix this, move the
application facing API to ${prefix}/include/libcamera/libcamera/ when
installed, and the IPA to ${prefix}/include/libcamera/ipa/. When major
versions of libcamera will be released, they could then be installed
side by side in ${prefix}/include/libcamera-${version}/.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
