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2020-05-13licenses: License all meson files under CC0-1.0Laurent Pinchart
In an attempt to clarify the license terms of all files in the libcamera project, the build system files deserve particular attention. While they describe how the binaries are created, they are not themselves transformed into any part of binary distributions of the software, and thus don't influence the copyright on the binary packages. They are however subject to copyright, and thus influence the distribution terms of the source packages. Most of the meson.build files would not meet the threshold of originality criteria required for copyright protection. Some of the more complex meson.build files may be eligible for copyright protection. To avoid any ambiguity and uncertainty, state our intent to not assert copyrights on the build system files by putting them in the public domain with the CC0-1.0 license. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Acked-by: Giulio Benetti <giulio.benetti@micronovasrl.com> Acked-by: Jacopo Mondi <jacopo@jmondi.org> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Acked-by: Naushir Patuck <naush@raspberrypi.com> Acked-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Acked-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Acked-by: Paul Elder <paul.elder@ideasonboard.com> Acked-by: Show Liu <show.liu@linaro.org>
2020-05-11libcamera: raspberrypi: Add components to meson buildNaushir Patuck
Add the Raspberry Pi pipeline handler and IPA as targets in the meson build system. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-05-11meson: Use files() instead of find_program() for internal scriptsLaurent Pinchart
Using find_program() to locate scripts part of the source tree causes meson to print messages at setup time for each of those scripts: Program ipa-sign.sh found: YES (/home/user/src/libcamera/src/ipa/ipa-sign.sh) This pollutes the meson setup log with useless messages, as we know the scripts are present. Use files() instead to avoid this. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-04-29libcamera: Regenerate IPA module signatures at install timeLaurent Pinchart
When the IPA modules are installed, meson strips the DT_RPATH and DT_RUNPATH from the binaries. This invalidates the signatures. Disable installation of the .sign files and add an installation script to regenerate them directly in the target directory. The .sign files still need to be created at build time to support running IPA modules from the build tree. Two alternative approaches have been considered: - meson could be taught a new target argument to preserve binary compatibility by skipping any operation that modifies files. This has been proposed in the #mesonbuild IRC channel. While this could be interesting in the longer term, we need to fix the issue now. - The module signatures could be computed on selected sections only. While skipping the .dynamic section when signing may not cause security issues, it would make signature generation and verification more complex, and wasn't deemed worth it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-04-28libcamera: ipa_proxy: Provide suport for IPA configuration filesLaurent Pinchart
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>
2020-04-14libcamera: Add IPA module signing infrastructureLaurent Pinchart
Add infrastructure to generate an RSA private key and sign IPA modules. The signatures are stored in separate files with a .sign suffix. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-25libcamera: Make pipeline handlers selectable at compile timeLaurent Pinchart
Add a 'pipelines' project option that specifies which pipeline handlers to compile in. The corresponding IPA modules are automatically selected. The default is to compile all pipeline handlers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-25ipa: Move vimc to a subdirectoryLaurent Pinchart
Give a subdirectory to all IPA modules to make the structure of the source tree more consistent. This will also simplify the implementation of IPA module selection at build time. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-11-20ipa: Switch to the plain C APIJacopo Mondi
Switch IPA communication to the plain C API. As the IPAInterface class is easier to use for pipeline handlers than a plain C API, retain it and add an IPAContextWrapper that translate between the C++ and the C APIs. On the IPA module side usage of IPAInterface may be desired for IPAs implemented in C++ that want to link to libcamera. For those IPAs, a new IPAInterfaceWrapper helper class is introduced to wrap the IPAInterface implemented internally by the IPA module into an ipa_context, ipa_context_ops and ipa_callback_ops. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-11libcamera: ipa: rkisp1: Add basic control of auto exposureNiklas Söderlund
Add an IPA which controls the exposure time and analog gain for a sensor connected to the rkisp1 pipeline. The IPA supports turning AE on and off and informing the camera of the status of the AE control loop. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-08ipa: meson: Give IPAs access to internal libcamera APIsJacopo Mondi
Open source IPA implementations can benefit from usage of libcamera internal APIs. Allow this by compiling against the internal headers and linking against libcamera. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-08ipa: vimc: Rename ipa_dummy to ipa_vimcJacopo Mondi
The DummyIPA is actually a test IPA module for the virtual media controller driver VIMC. Rename it accordingly to its usage. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2019-09-15ipa: Generate the two dummy IPA modules from the same sourceLaurent Pinchart
The ipa_dummy.cpp and ipa_dummy_isolate.cpp only differ in the license reported in the IPAModuleInfo structure. Drop the second file and generate the two .so from ipa_dummy.cpp, with the license defined through the command line. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-07-12libcamera: ipa: meson: build dummy IPA that needs isolationPaul Elder
Add the dummy IPA that needs isolation to meson. At the same time, clean up the IPA meson to facilitate adding more IPAs. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-06-05libcamera: ipa: add dummy IPA implementationPaul Elder
Add a dummy IPA module. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-06-05libcamera: ipa_manager: implement class for managing IPA modulesPaul Elder
IPAManager is a class that will search in given directories for IPA modules, and will load them into a list. It also provides an interface for pipeline handlers to acquire an IPA. A meson build file for the IPAs is added, which also specifies a hard-coded path for where to load the IPAs from in the installation directory. More paths can be specified with the environment variable LIBCAMERA_IPA_MODULE_PATH, with the same syntax as the regular PATH environment variable. Make the test framework set this environment variable. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>