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2018-12-13Documentation: Add coding style documentJacopo Mondi
Add document to summarize the coding style adopted by libcamera. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2018-12-13build: Add 'std=c++11' cpp compiler flagJacopo Mondi
Building the current master branch with g++ 5.4.0-6 fails with: ./src/libcamera/include/log.h:25:34: error: defaulted and deleted functions only available with -std=c++11 \ or -std=gnu++11 [-Werror] LogMessage(const LogMessage&) = delete; Fix this by adding the 'std=c++11' compiler argument for to the list of cpp build flags. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2018-12-12libcamera: log: Document the LogMessage classLaurent Pinchart
Fix Doxygen build warnings by adding the missing documentation for the LogMessage class. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-12libcamera: log: Fix Doxygen documentationLaurent Pinchart
Now that the documentation can be compiled, Doxygen throws a few warnings due to incorrect enum field naming. Fix it. The \file block needs to be named after the header file in order for Doxygen to document any global function, variable, typedef or enum defined in the header (as documented in the Doxygen manual under the \file command). We thus need to use log.h as the file name. No \file block is needed for the .cpp file, as we don't want to generate documentation for internal private globals. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-12Documentation: Generate source code documentation using DoxygenLaurent Pinchart
Extend the documentation build system to automatically generate documentation from source code using Doxygen. This is currently separate from the sphinx documentation, and should be integrated using the breathe (and possibly exhale) extensions. As the Documentation/meson.build file needs to reference the variables holding the source files, move the Documentation directory to the end of the subdirs() in the top-level meson.build. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-12Documentation: Don't hardcode install directoryLaurent Pinchart
Use the datadir option to select the directory in which to install documentation. This defaults to $prefix/share so this doesn't introduce any change in the default case. While at it use join_paths() to join patch components instead of hardcoding the / separator. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-12-11Documentation: Set install_dir in custom_target()Laurent Pinchart
The custom_target() function accepts an install_dir parameter. Along with setting install to true, this can be used to replace the install_subdir() function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-11build: Clean up file names variablesLaurent Pinchart
The build system defines two variables, public_api and sources, that store the names of the public headers and the source files respectively. These files will need to be referenced when generating documentation from source code, so let's make the variable names more descriptive: - Rename public_api to libcamera_api and use the files() function - Rename sources to libcamera_sources - Add a libcamera_headers variable to hold the internal headers Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-11utils: ipu3: process: Configure formats on ImgU subdev padsLaurent Pinchart
Set format and selection rectangles on the ImgU subdev as required by the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-11utils: ipu3: process: Fix typo in output files pathLaurent Pinchart
A typo in the output files path causes the script to attempt to write all captured frames to /. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-11utils: ipu3: Abort when sensor or media device isn't foundLaurent Pinchart
Calling exit from a function only exits from the function, it doesn't abort the whole script. Propagate the errors to stop operation when the sensor or media device can't be found. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-11libcamera: log: Fix miscellaneous coding style issuesLaurent Pinchart
Those issues were pointed out during review. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-12-06libcamera: Use the logger instead of coutLaurent Pinchart
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-12-06libcamera: Add initial loggerLaurent Pinchart
The logger is based on the ostream API, allowing code to log messages in a native way. It automatically logs the time stamp, severity level, file name and line number. Many important features are missing, such as logging to file, logging classes, and log filtering based on the severity level, file name and class. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-12-06Overhaul the directory structureLaurent Pinchart
In order to match the directory structure of traditional projects, rename the top-level lib/ directory to src/libcamera/. Other libraries developed as part of the project will later find a home in src/. Split the libcamera header files in three categories: public headers describing the public API in include/libcamera/, internal headers describing the internal API in src/libcamera/include/, and private headers local to one or a small number of compilation units along the corresponding .cpp files. As no internal header exists yet the src/libcamera/include/ directory is created empty as the build system would fail otherwise. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-12-06Add boilerplate headers comments and include guardsLaurent Pinchart
The initial main.cpp and libcamera.h files are missing boilerplate header comments. libcamera.h is further missing include guards. Add them. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-12-03lib: Fix class and namespace usageKieran Bingham
The (dummy) init_lib function was linking correctly only due to a namespace 'collision' adding the init_lib to libcamera namespace, which is 'shared' by class libcamera. The init function was designed to be a class member function of the libcamera object - and is used as such in the existing test function. Instead of relying on the namespace collision - update the lib/main.cpp example file to correctly utilise the class header - and specify the function declaration, so that further implementations do not fall into the same bad habits. Reported-by: Jacopo Mondi <jacopo@mondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-12-02utils: ipu3: Add test process scriptLaurent Pinchart
The script processes raw frames through the Intel IPU3 IMGU. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-11-30meson: Describe minimum meson version requirementsKieran Bingham
We utilise 'add_project_arguments' which is only available in version 0.36 and 'build_by_default' which is only available in version 0.40 of meson. Add this dependancy to the project requirements. Reported-by: Jacopo Mondi <jacopo@mondi.org> Acked-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-29utils: ipu3: Add test capture scriptLaurent Pinchart
The script captures raw frames from cameras based on the Intel IPU3. It takes the sensor name as an argument and isn't meant to depend on a particular platform. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-28Documentation: Introduce sphinx documentationKieran Bingham
Utilise sphinx-build to generate documentation in HTML form, and populate with some initial content. An initial conf.py is generated from sphinx-quickstart and answering initial questions. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-28licenses: Add licenses subdirectoryKieran Bingham
Code licensing will be specified with SPDX license headers. Documentation will be licensed under CC-by-SA. Include the common license text files to reference with the headers. Licenses are extracted from the following locations: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt https://www.gnu.org/licenses/old-licenses/gpl-2.0.txt https://creativecommons.org/licenses/by-sa/4.0/legalcode.txt Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-28meson: Replace tabs for spacesKieran Bingham
Tabs are disliked within the meson build system. Replace indentation by spaces, in all existing locations. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-27build: Add project argumentsKieran Bingham
Add language specific project arguments and ensure that -Werror is enabled, enforcing code to be as clean as possible. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-27include: Install include filesKieran Bingham
The include directory was defined but not installed. Add it to the meson build structure to incorporate it as part of the library install. To facilitate the same include paths in our internal includes, update the structure for headers to match the install structure. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-27lib: Include library in the install targetKieran Bingham
The shared library build target does not install the library when 'ninja install' is executed. Flag it as an installable item. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-26README: Update build instructionsKieran Bingham
README is currently a bit too sparse, and there is no guidance on how to use our build system. Add some initial instructions. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-22test: Register the initialisation test with mesonKieran Bingham
Register the test so that it can integrate with the meson test framework. To execute the test suite, use 'ninja test'. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-11-20utils: ipu3: Add IPU3 raw capture unpack utilityLaurent Pinchart
The IPU3 captures Bayer data in a 25-pixels-in-32-bytes packed format, which no standard tool can process. Add a quick implementation of data unpacking to turn raw binary files into 16 bits per pixel unpacked Bayer data. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2018-10-24build: Provide initial meson infrastructureKieran Bingham
Define the starting points for the libcamera build using meson and ninja build components. An initial 'dummy' library class is created, and a test binary links against the shared library calling it's init_lib() function. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-10-24libcamera: Supporting complex camera pipelinesKieran Bingham
Cameras are complex devices that need heavy hardware image processing operations. Control of the processing is based on advanced algorithms that must run on a programmable processor. This has traditionally been implemented in a dedicated MCU in the camera, but in embedded devices algorithms have been moved to the main CPU to save cost. Blurring the boundary between camera devices and Linux often left the user with no other option than a vendor-specific closed-source solution. To address this problem the Linux media community has very recently started collaboration with the industry to develop a camera stack that will be open-source-friendly while still protecting vendor core IP. libcamera was born out of that collaboration and will offer modern camera support to Linux-based systems, including traditional Linux distributions, ChromeOS and Android.