libcamera/vivid.git - libcamera pipeline handler for VIVID

Age	Commit message (Collapse)	Author
2022-10-10	libcamera: base: utils: Drop defopt	Laurent Pinchart

amera requires gcc-8 or newer), but it is shipped by Debian 10 that has LTS support until mid-2024. As no workaround has been found to fix compilation on gcc 8.3.0 while still retaining the functionality of utils::defopt, remove it from the libcamera base library. This change could be reverted once support for gcc-8 will be dropped. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> 2022-08-26utils: Satisfy LegacyInputIterator with StringSplitter::iteratorLaurent Pinchart The StringSplitter::iterator is used with the utils::split() function to iterate over components of a split string. Add the necessary member types expected by std::iterator_trait in order to satisfy the LegacyInputIterator requirement and make the iterator usable in constructors for various containers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> 2022-07-28libcamera: base: utils: Provide defopt to simplify std::optional::value_or() ↵Laurent Pinchart usage The std::optional<T>::value_or(U &&default_value) function returns the contained value if available, or default_value if the std::optional has no value. If the desired default value is a default-constructed T, the obvious option is to call std::optional<T>::value_or(T{}). This approach has two drawbacks: - The \a default_value T{} is constructed even if the std::optional instance has a value, which impacts efficiency. - The T{} default constructor needs to be spelled out explicitly in the value_or() call, leading to long lines if the type is complex. Introduce a defopt variable that solves these issues by providing a value that can be passed to std::optional<T>::value_or() and get implicitly converted to a default-constructed T. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> 2021-09-07libcamera: base: utils: Use size_t for index in utils::enumerate()Laurent Pinchart The index generated by utils::enumerate() is an iteration counter, which should thus be positive. Use std::size_t instead of the difference_type of the container. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> 2021-06-25libcamera/base: Move span to base libraryKieran Bingham Move span, and adjust the Doxygen exclusion as well. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> 2021-06-25libcamera/base: Move utils to the base libraryKieran Bingham Move the utils functionality to the libcamera/base library. Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> 2021-06-08libcamera: utils: Add helper class for std::chrono::durationNaushir Patuck A new utils::Duration class is defined to represent a std::chrono::duration type with double precision nanosecond timebase. Using a double minimises the loss of precision when converting timebases. This helper class may be used by IPAs to represent variables such as frame durations and exposure times. An operator << overload is defined to help with displaying utils::Duration value in stream objects. Currently, this will display the duration value in microseconds. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 2021-05-18libcamera: utils: Add enumerate view for range-based for loopsLaurent Pinchart Range-based for loops are handy and widely preferred in C++, but are limited in their ability to replace for loops that require access to a loop counter. The enumerate() function solves this problem by wrapping the iterable in an adapter that, when used as a range-expression, will provide iterators whose value_type is a pair of index and value reference. The iterable must support std::begin() and std::end(). This includes all containers provided by the standard C++ library, as well as C-style arrays. A typical usage pattern would use structured binding to store the index and value in two separate variables: std::vector<int> values = ...; for (auto [index, value] : utils::enumerate(values)) { ... } Signed-off-by: Laurent Pinchart <laurent.pinchart@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> 2020-05-16libcamera: 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> 2020-04-15libcamera: utils: Add string join functionLaurent Pinchart Add a utils::join() function to join elements of a container into a string, with a separator and an optional conversion function if the elements are not implicitly convertible to std::string. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> 2020-02-24libcamera: utils: Add a C++ dirname implementationKieran Bingham Provide a std::string based implementation which conforms to the behaviour of the dirname() fucntion defined by POSIX. Tests are added to cover expected corner cases of the implementation. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 2020-02-13test: Add a utils::split() testLaurent Pinchart The test constructs a string by joining substrings, splits it, and verifies that the original and resulting substrings match. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> 2019-10-15libcamera: utils: Add hex stream output helperLaurent Pinchart Add a utils::hex() function that simplifies writing hexadecimal values to an ostream. The function handles the '0x' prefix, the field width and the fill character automatically. Use it through the libcamera code base, and add a test. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>