#include <psemek/audio/effect/fade_out.hpp>
#include <psemek/audio/effect/envelope.hpp>
#include <psemek/math/interval.hpp>

namespace psemek::audio
{

	stream_ptr fade_in(stream_ptr stream, duration length, duration start)
	{
		return envelope(std::move(stream), [start, length](duration time){
			return math::clamp(static_cast<float>(time.frames() - start.frames()) / length.frames(), {0.f, 1.f});
		});
	}

}