// 2026년 포트폴리오용 재구성 코드. 실제 업무 당시 소스가 아닙니다.
// 2026 portfolio reconstruction. Not original production source.
using System;
using System.Collections.Generic;
namespace PortfolioExamples
{
    // Fixed sample-count delay, not a network jitter buffer or a wall-clock guarantee.
    public sealed class FrameDelayBuffer<T>
    {
        readonly int delay;
        readonly Queue<T> queue = new Queue<T>();
        public FrameDelayBuffer(int delayFrames)
        { if (delayFrames < 0) throw new ArgumentOutOfRangeException(nameof(delayFrames)); delay = delayFrames; }
        public bool Push(T value, out T output)
        {
            queue.Enqueue(value);
            if (queue.Count <= delay) { output = default(T); return false; }
            output = queue.Dequeue(); return true;
        }
        public void Reset() => queue.Clear();
        public int BufferedCount => queue.Count;
    }
}