Add audio::literals to represent durations like 100_ms or 0.5_s

libs/audio/include/psemek/audio/literals.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <psemek/audio/duration.hpp>
+#include <psemek/audio/constants.hpp>
+
+#include <cmath>
+
+namespace psemek::audio::literals
+{
+
+	duration operator ""_s (unsigned long long value)
+	{
+		return duration::from_frames(value * frequency);
+	}
+
+	duration operator ""_ms (unsigned long long value)
+	{
+		return duration::from_frames((value * frequency) / 1000);
+	}
+
+	duration operator ""_s (long double value)
+	{
+		return duration::from_frames(std::round(value * frequency));
+	}
+
+	duration operator ""_ms (long double value)
+	{
+		return duration::from_frames(std::round(value * frequency / 1000.0));
+	}
+
+}