First Commit

externals/openal-soft/al/eax/utils.h

@@ -0,0 +1,95 @@
+#ifndef EAX_UTILS_INCLUDED
+#define EAX_UTILS_INCLUDED
+
+#include <algorithm>
+#include <cstdint>
+#include <string>
+#include <type_traits>
+
+using EaxDirtyFlags = unsigned int;
+
+struct EaxAlLowPassParam {
+    float gain;
+    float gain_hf;
+};
+
+void eax_log_exception(const char *message) noexcept;
+
+template<typename TException, typename TValue>
+void eax_validate_range(
+    const char* value_name,
+    const TValue& value,
+    const TValue& min_value,
+    const TValue& max_value)
+{
+    if (value >= min_value && value <= max_value)
+        return;
+
+    const auto message =
+        std::string{value_name} +
+        " out of range (value: " +
+        std::to_string(value) + "; min: " +
+        std::to_string(min_value) + "; max: " +
+        std::to_string(max_value) + ").";
+
+    throw TException{message.c_str()};
+}
+
+namespace detail {
+
+template<typename T>
+struct EaxIsBitFieldStruct {
+private:
+    using yes = std::true_type;
+    using no = std::false_type;
+
+    template<typename U>
+    static auto test(int) -> decltype(std::declval<typename U::EaxIsBitFieldStruct>(), yes{});
+
+    template<typename>
+    static no test(...);
+
+public:
+    static constexpr auto value = std::is_same<decltype(test<T>(0)), yes>::value;
+};
+
+template<typename T, typename TValue>
+inline bool eax_bit_fields_are_equal(const T& lhs, const T& rhs) noexcept
+{
+    static_assert(sizeof(T) == sizeof(TValue), "Invalid type size.");
+    return reinterpret_cast<const TValue&>(lhs) == reinterpret_cast<const TValue&>(rhs);
+}
+
+} // namespace detail
+
+template<
+    typename T,
+    std::enable_if_t<detail::EaxIsBitFieldStruct<T>::value, int> = 0
+>
+inline bool operator==(const T& lhs, const T& rhs) noexcept
+{
+    using Value = std::conditional_t<
+        sizeof(T) == 1,
+        std::uint8_t,
+        std::conditional_t<
+            sizeof(T) == 2,
+            std::uint16_t,
+            std::conditional_t<
+                sizeof(T) == 4,
+                std::uint32_t,
+                void>>>;
+
+    static_assert(!std::is_same<Value, void>::value, "Unsupported type.");
+    return detail::eax_bit_fields_are_equal<T, Value>(lhs, rhs);
+}
+
+template<
+    typename T,
+    std::enable_if_t<detail::EaxIsBitFieldStruct<T>::value, int> = 0
+>
+inline bool operator!=(const T& lhs, const T& rhs) noexcept
+{
+    return !(lhs == rhs);
+}
+
+#endif // !EAX_UTILS_INCLUDED