【音乐拼接】mp3格式

预备知识

mp3格式拼接只需要把文件的字节流拼在一起就能播放，这比WAV简单不要太多

程序代码

using System.Collections.Generic;
using System.IO;
using System.Text;

namespace MP3
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> ls = new List<string> {
                @"C:\Users\Administrator\Desktop\mp3\c.mp3",
                @"C:\Users\Administrator\Desktop\mp3\a.mp3",
                @"C:\Users\Administrator\Desktop\mp3\b.mp3",
                @"C:\Users\Administrator\Desktop\out.mp3"
            };
            Get_mp3(ls);
        }
        static void Get_mp3(List<string> l)
        {
            List<string> ls = l;
            int n = ls.Count;
            byte[] OUT = File_2_byte(ls[0]);
            for (int i = 0; i < n; i++)
            {
                if (i == n - 2)
                {
                    using (StreamWriter sw = new StreamWriter(ls[i + 1], false, Encoding.GetEncoding(1252)))
                    {
                        sw.Write(Encoding.GetEncoding(1252).GetString(OUT));
                    }
                    return;
                }
                byte[] tmp = File_2_byte(ls[i + 1]);
                OUT = Combine_2_byte(OUT, tmp);
            }
        }
        static byte[] File_2_byte(string url)
        {
            long l = new FileInfo(url).Length;
            byte[] b = new byte[l];
            new FileStream(url, FileMode.Open).Read(b, 0, (int)l);
            return b;
        }
        static byte[] Combine_2_byte(byte[] a, byte[] b)
        {
            long la = a.Length;
            long lb = b.Length;
            long lc = la + lb;
            byte[] c = new byte[lc];
            for (int i = 0; i < la; i++)
            {
                c[i] = a[i];
            }
            for (int i = 0; i < lb; i++)
            {
                c[i + la] = b[i];
            }
            return c;
        }
    }
}