23#include <libcamera/base/private.h>
29#define O_TMPFILE (020000000 | O_DIRECTORY)
38const char *
basename(
const char *path);
41std::string
dirname(
const std::string &path);
44std::vector<typename T::key_type>
map_keys(
const T &map)
46 std::vector<typename T::key_type> keys;
47 std::transform(map.begin(), map.end(), std::back_inserter(keys),
48 [](
const auto &value) { return value.first; });
52template<
class InputIt1,
class InputIt2>
54 InputIt2 first2, InputIt2 last2)
56 unsigned int count = 0;
58 while (first1 != last1 && first2 != last2) {
59 if (*first1 < *first2) {
62 if (!(*first2 < *first1))
71using clock = std::chrono::steady_clock;
72using duration = std::chrono::steady_clock::duration;
84std::basic_ostream<char, std::char_traits<char>> &
85operator<<(std::basic_ostream<
char, std::char_traits<char>> &stream,
const _hex &h);
89 std::enable_if_t<std::is_integral<T>::value> * =
nullptr>
90_hex
hex(T value,
unsigned int width = 0);
94inline _hex
hex<int8_t>(int8_t value,
unsigned int width)
96 return {
static_cast<uint64_t
>(value), width ? width : 2 };
100inline _hex hex<uint8_t>(uint8_t value,
unsigned int width)
102 return {
static_cast<uint64_t
>(value), width ? width : 2 };
106inline _hex hex<int16_t>(int16_t value,
unsigned int width)
108 return {
static_cast<uint64_t
>(value), width ? width : 4 };
114 return {
static_cast<uint64_t
>(value), width ? width : 4 };
118inline _hex
hex<int32_t>(int32_t value,
unsigned int width)
120 return {
static_cast<uint64_t
>(value), width ? width : 8 };
126 return {
static_cast<uint64_t
>(value), width ? width : 8 };
130inline _hex
hex<int64_t>(int64_t value,
unsigned int width)
132 return {
static_cast<uint64_t
>(value), width ? width : 16 };
138 return {
static_cast<uint64_t
>(value), width ? width : 16 };
142size_t strlcpy(
char *dst,
const char *src,
size_t size);
145template<
typename Container,
typename UnaryOp>
146std::string
join(
const Container &items,
const std::string &sep, UnaryOp op)
148 std::ostringstream ss;
151 for (
typename Container::const_iterator it = std::begin(items);
152 it != std::end(items); ++it) {
164template<
typename Container>
165std::string
join(
const Container &items,
const std::string &sep)
167 std::ostringstream ss;
170 for (
typename Container::const_iterator it = std::begin(items);
171 it != std::end(items); ++it) {
183template<
typename Container,
typename UnaryOp>
184std::string
join(
const Container &items,
const std::string &sep, UnaryOp op =
nullptr);
192 StringSplitter(
const std::string &str,
const std::string &delim);
197 using difference_type = std::size_t;
198 using value_type = std::string;
199 using pointer = value_type *;
200 using reference = value_type &;
201 using iterator_category = std::input_iterator_tag;
203 iterator(
const StringSplitter *ss, std::string::size_type pos);
205 iterator &operator++();
208 bool operator==(
const iterator &other)
const
210 return pos_ == other.pos_;
213 bool operator!=(
const iterator &other)
const
215 return !(*
this == other);
219 const StringSplitter *ss_;
220 std::string::size_type pos_;
221 std::string::size_type next_;
224 iterator begin()
const
231 return {
this, std::string::npos };
241details::StringSplitter
split(
const std::string &str,
const std::string &delim);
243std::string
toAscii(
const std::string &str);
248constexpr unsigned int alignDown(
unsigned int value,
unsigned int alignment)
250 return value / alignment * alignment;
253constexpr unsigned int alignUp(
unsigned int value,
unsigned int alignment)
255 return (value + alignment - 1) / alignment * alignment;
261struct reverse_adapter {
266auto begin(reverse_adapter<T> r)
268 return std::rbegin(r.iterable);
272auto end(reverse_adapter<T> r)
274 return std::rend(r.iterable);
280details::reverse_adapter<T>
reverse(T &&iterable)
287template<
typename Base>
288class enumerate_iterator
291 using base_reference =
typename std::iterator_traits<Base>::reference;
294 using difference_type =
typename std::iterator_traits<Base>::difference_type;
295 using value_type = std::pair<const std::size_t, base_reference>;
296 using pointer = value_type *;
297 using reference = value_type &;
298 using iterator_category = std::input_iterator_tag;
300 explicit enumerate_iterator(Base iter)
301 : current_(iter), pos_(0)
305 enumerate_iterator &operator++()
312 bool operator!=(
const enumerate_iterator &other)
const
314 return current_ != other.current_;
317 value_type operator*()
const
319 return { pos_, *current_ };
327template<
typename Base>
328class enumerate_adapter
331 using iterator = enumerate_iterator<Base>;
333 enumerate_adapter(Base begin, Base end)
334 : begin_(begin), end_(end)
338 iterator begin()
const
340 return iterator{ begin_ };
345 return iterator{ end_ };
356auto enumerate(T &iterable) -> details::enumerate_adapter<
decltype(iterable.begin())>
358 return { std::begin(iterable), std::end(iterable) };
362template<
typename T,
size_t N>
363auto enumerate(T (&iterable)[N]) -> details::enumerate_adapter<T *>
365 return { std::begin(iterable), std::end(iterable) };
369class Duration :
public std::chrono::duration<double, std::nano>
371 using BaseDuration = std::chrono::duration<double, std::nano>;
374 Duration() =
default;
376 template<
typename Rep>
382 template<
typename Rep,
typename Period>
383 constexpr Duration(
const std::chrono::duration<Rep, Period> &d)
388 template<
typename Period>
391 auto const c = std::chrono::duration_cast<std::chrono::duration<double, Period>>(*this);
395 explicit constexpr operator bool()
const
397 return *
this != BaseDuration::zero();
410double strtod(
const char *__restrict nptr,
char **__restrict endptr);
415 return static_cast<std::underlying_type_t<Enum>
>(e);
423 void operator+=(std::function<
void()> &&action);
427 std::vector<std::function<void()>> actions_;
433template<
class CharT,
class Traits>
434std::basic_ostream<CharT, Traits> &
operator<<(std::basic_ostream<CharT, Traits> &os,
Helper class from std::chrono::duration that represents a time duration in nanoseconds with double pr...
Definition utils.h:370
constexpr Duration(const Rep &r)
Construct a Duration with r ticks.
Definition utils.h:377
double get() const
Retrieve the tick count, converted to the timebase provided by the template argument Period of type s...
Definition utils.h:389
constexpr Duration(const std::chrono::duration< Rep, Period > &d)
Construct a Duration by converting an arbitrary std::chrono::duration.
Definition utils.h:383
An object that performs actions upon destruction.
Definition utils.h:419
void release()
Remove all exit actions.
Definition utils.cpp:646
void operator+=(std::function< void()> &&action)
Add an exit action.
Definition utils.cpp:634
Top-level libcamera namespace.
Definition backtrace.h:17
std::ostream & operator<<(std::ostream &out, const Point &p)
Insert a text representation of a Point into an output stream.
Definition geometry.cpp:91
Matrix< U, Rows, Cols > operator*(T d, const Matrix< U, Rows, Cols > &m)
Multiply the matrix by a scalar.
Definition matrix.h:101
unsigned int set_overlap(InputIt1 first1, InputIt1 last1, InputIt2 first2, InputIt2 last2)
Count the number of elements in the intersection of two ranges.
Definition utils.h:53
constexpr unsigned int alignUp(unsigned int value, unsigned int alignment)
Align value up to alignment.
Definition utils.h:253
std::chrono::steady_clock::duration duration
The libcamera duration related to libcamera::utils::clock.
Definition utils.h:72
const char * basename(const char *path)
Strip the directory prefix from the path.
Definition utils.cpp:37
details::StringSplitter split(const std::string &str, const std::string &delim)
Split a string based on a delimiter.
Definition utils.cpp:308
std::string time_point_to_string(const time_point &time)
Convert a time point to a string representation.
Definition utils.cpp:175
std::chrono::steady_clock::time_point time_point
The libcamera time point related to libcamera::utils::clock.
Definition utils.h:73
std::string join(const Container &items, const std::string &sep, UnaryOp op=nullptr)
Join elements of a container in a string with a separator.
_hex hex(T value, unsigned int width=0)
Write an hexadecimal value to an output string.
std::string libcameraSourcePath()
Retrieve the path to the source directory.
Definition source_paths.cpp:114
std::string toAscii(const std::string &str)
Remove any non-ASCII characters from a string.
Definition utils.cpp:322
constexpr unsigned int alignDown(unsigned int value, unsigned int alignment)
Align value down to alignment.
Definition utils.h:248
size_t strlcpy(char *dst, const char *src, size_t size)
Copy a string with a size limit.
Definition utils.cpp:240
char * secure_getenv(const char *name)
Get an environment variable.
Definition utils.cpp:61
std::chrono::steady_clock clock
The libcamera clock (monotonic)
Definition utils.h:71
details::reverse_adapter< T > reverse(T &&iterable)
Wrap an iterable to reverse iteration in a range-based loop.
Definition utils.h:280
decltype(auto) abs_diff(const T &a, const T &b)
Calculates the absolute value of the difference between two elements.
Definition utils.h:402
std::vector< typename T::key_type > map_keys(const T &map)
Retrieve the keys of a std::map<>
Definition utils.h:44
std::string libcameraBuildPath()
Retrieve the path to the build directory.
Definition source_paths.cpp:74
struct timespec duration_to_timespec(const duration &value)
Convert a duration to a timespec.
Definition utils.cpp:161
auto enumerate(T &iterable) -> details::enumerate_adapter< decltype(iterable.begin())>
Wrap an iterable to enumerate index and value in a range-based loop.
Definition utils.h:356
constexpr std::underlying_type_t< Enum > to_underlying(Enum e) noexcept
Convert an enumeration to its underlygin type.
Definition utils.h:413
std::string dirname(const std::string &path)
Identify the dirname portion of a path.
Definition utils.cpp:83