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libcamera: span: Provide and use helper variable templates for type traits

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Following the C++17 practice, provide is_array_v<T> and is_span_v<T>
helper variable templates as shorter versions of is_array<T>::value and
is_span<T>::value, and use them through the code.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
This commit is contained in:
Laurent Pinchart
2020-10-28 03:33:06 +02:00
parent 6cbdc28599
commit 8e42c2feb7
2 changed files with 20 additions and 14 deletions
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include/libcamera/controls.h
+6 -6
View File
@@ -96,7 +96,7 @@ public:
ControlValue();
#ifndef __DOXYGEN__
template<typename T, typename std::enable_if_t<!details::is_span<T>::value &&
template<typename T, typename std::enable_if_t<!details::is_span_v<T> &&
details::control_type<T>::value &&
!std::is_same_v<std::string, std::remove_cv_t<T>>,
std::nullptr_t> = nullptr>
@@ -107,7 +107,7 @@ public:
&value, 1, sizeof(T));
}
template<typename T, typename std::enable_if_t<details::is_span<T>::value ||
template<typename T, typename std::enable_if_t<details::is_span_v<T> ||
std::is_same_v<std::string, std::remove_cv_t<T>>,
std::nullptr_t> = nullptr>
#else
@@ -141,7 +141,7 @@ public:
}
#ifndef __DOXYGEN__
template<typename T, typename std::enable_if_t<!details::is_span<T>::value &&
template<typename T, typename std::enable_if_t<!details::is_span_v<T> &&
!std::is_same_v<std::string, std::remove_cv_t<T>>,
std::nullptr_t> = nullptr>
T get() const
@@ -152,7 +152,7 @@ public:
return *reinterpret_cast<const T *>(data().data());
}
template<typename T, typename std::enable_if_t<details::is_span<T>::value ||
template<typename T, typename std::enable_if_t<details::is_span_v<T> ||
std::is_same_v<std::string, std::remove_cv_t<T>>,
std::nullptr_t> = nullptr>
#else
@@ -169,7 +169,7 @@ public:
}
#ifndef __DOXYGEN__
template<typename T, typename std::enable_if_t<!details::is_span<T>::value &&
template<typename T, typename std::enable_if_t<!details::is_span_v<T> &&
!std::is_same_v<std::string, std::remove_cv_t<T>>,
std::nullptr_t> = nullptr>
void set(const T &value)
@@ -178,7 +178,7 @@ public:
reinterpret_cast<const void *>(&value), 1, sizeof(T));
}
template<typename T, typename std::enable_if_t<details::is_span<T>::value ||
template<typename T, typename std::enable_if_t<details::is_span_v<T> ||
std::is_same_v<std::string, std::remove_cv_t<T>>,
std::nullptr_t> = nullptr>
#else