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path: root/include/libcamera/internal/utils.h
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2021-02-05libcamera: utils: Add reverse adapter for range-based loopLaurent Pinchart
Add a utils::reverse() function that creates an adapter wrapping in iterable, such that range-based iteration over the adapter iterates over the iterable in reverse order. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-14libcamera: Replace ARRAY_SIZE() with std::size()Laurent Pinchart
C++17 has a std::size() function that returns the size of a C-style array. Use it instead of the custom ARRAY_SIZE macro. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Umang Jain <email@uajain.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-10-02libcamera: utils: Add method to remove non-ASCII charactersNiklas Söderlund
Add method that removes non-ASCII characters from a string. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Umang Jain <email@uajain.com>
2020-08-25libcamera: Replace utils::clamp() with std::clamp()Laurent Pinchart
Now that libcamera uses C++17, the C++ standard library provides std::clamp(). Drop our custom utils::clamp() function. 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>
2020-08-03libcamera: utils: Add alignUp and alignDown functionsJacopo Mondi
Add to libcamera utils library two functions to round up or down a value to an alignment and add a test in test/utils.cpp for the two new functions. Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-07-09libcamera: utils: Add map_keys() functionLaurent Pinchart
Add a map_keys() function to the utils namespace to extract keys from a map. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [Niklas: change return type to std::vector instead of std::set] Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-06-06libcamera: Rename header guards for internal headersLaurent Pinchart
With the internal headers now in include/libcamera/internal/, we may have identically named headers in include/libcamera/. Their header guards would clash. Rename the header guards of internal headers to prevent any issue. 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>
2020-05-16libcamera: Move internal headers to include/libcamera/internal/Laurent Pinchart
The libcamera internal headers are located in src/libcamera/include/. The directory is added to the compiler headers search path with a meson include_directories() directive, and internal headers are included with (e.g. for the internal semaphore.h header) #include "semaphore.h" All was well, until libcxx decided to implement the C++20 synchronization library. The __threading_support header gained a #include <semaphore.h> to include the pthread's semaphore support. As include_directories() adds src/libcamera/include/ to the compiler search path with -I, the internal semaphore.h is included instead of the pthread version. Needless to say, the compiler isn't happy. Three options have been considered to fix this issue: - Use -iquote instead of -I. The -iquote option instructs gcc to only consider the header search path for headers included with the "" version. Meson unfortunately doesn't support this option. - Rename the internal semaphore.h header. This was deemed to be the beginning of a long whack-a-mole game, where namespace clashes with system libraries would appear over time (possibly dependent on particular system configurations) and would need to be constantly fixed. - Move the internal headers to another directory to create a unique namespace through path components. This causes lots of churn in all the existing source files through the all project. The first option would be best, but isn't available to us due to missing support in meson. Even if -iquote support was added, we would need to fix the problem before a new version of meson containing the required support would be released. The third option is thus the only practical solution available. Bite the bullet, and do it, moving headers to include/libcamera/internal/. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Jacopo Mondi <jacopo@jmondi.org>