C#?WPF實現播放音頻文件的示例詳解

更新時間：2024年03月12日 11:50:56 作者：無熵~

這篇文章主要為大家詳細介紹了利用C#?WPF實現播放音頻文件的相關知識,文中的示例代碼講解詳細,感興趣的小伙伴可以跟隨小編一起學習一下

C#播放音頻文件的方式：

播放系統事件聲音

使用System.Media.SoundPlayer播放wav

使用MCI Command String多媒體設備程序接口播放mp3，wav，avi等

使用WindowsMediaPlayer的COM組件來播放(可視化)

使用DirectX播放音頻文件

使用Speech播放(朗讀器，可朗讀文本)

這里講不需要引用dll就能播放音頻的幾種方式：

1、播放系統事件聲音

System.Media.SystemSounds.Asterisk.Play();      //星號
System.Media.SystemSounds.Beep.Play();          //提示音
System.Media.SystemSounds.Exclamation.Play();   //感嘆
System.Media.SystemSounds.Hand.Play();          //協助
System.Media.SystemSounds.Question.Play();      //問題

2、使用MCI Command String播放音頻文件，可以支持多種格式(mp3，wav，avi)，且不需要額外引用dll，可以循環(huán)播放音頻

    public class AudioPlayer
    {
        public AudioPlayer()
        {
        }
        //定義API函數使用的字符串變量 
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
        private string Name = "";
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
        private string durLength = "";
        [MarshalAs(UnmanagedType.LPTStr, SizeConst = 128)]
        private string TemStr = "";
        int ilong;
        //定義播放狀態(tài)枚舉變量
        public enum State
        {
            mPlaying = 1,
            mPuase = 2,
            mStop = 3
        };
        //結構變量
        public struct structMCI
        {
            public bool bMut;
            public int iDur;
            public int iPos;
            public int iVol;
            public int iBal;
            public string iName;
            public State state;
        };
        public structMCI mc = new structMCI();
        //取得播放文件屬性
        public string FileName
        {
            get
            {
                return mc.iName;
            }
            set
            {
                try
                {
                    TemStr = "";
                    TemStr = TemStr.PadLeft(127, Convert.ToChar(" "));
                    Name = Name.PadLeft(260, Convert.ToChar(" "));
                    mc.iName = value;
                    ilong = APIClass.GetShortPathName(mc.iName, Name, Name.Length);
                    Name = GetCurrPath(Name);
                    Name = "open " + Convert.ToChar(34) + Name + Convert.ToChar(34) + " alias media";
                    ilong = APIClass.mciSendString("close all", TemStr, TemStr.Length, 0);
                    ilong = APIClass.mciSendString(Name, TemStr, TemStr.Length, 0);
                    ilong = APIClass.mciSendString("set media time format milliseconds", TemStr, TemStr.Length, 0);
                    mc.state = State.mStop;
                }
                catch
                {
                }
            }
        }
        //播放
        public void play()
        {
            TemStr = "";
            TemStr = TemStr.PadLeft(127, Convert.ToChar(" "));
            APIClass.mciSendString("play media", TemStr, TemStr.Length, 0);              //單次播放
            //APIClass.mciSendString("play media repeat", TemStr, TemStr.Length, 0);     //循環(huán)播放
            mc.state = State.mPlaying;
        }
        //停止
        public void StopT()
        {
            TemStr = "";
            TemStr = TemStr.PadLeft(128, Convert.ToChar(" "));
            ilong = APIClass.mciSendString("close media", TemStr, 128, 0);
            ilong = APIClass.mciSendString("close all", TemStr, 128, 0);
            mc.state = State.mStop;
        }
        public void Puase()
        {
            TemStr = "";
            TemStr = TemStr.PadLeft(128, Convert.ToChar(" "));
            ilong = APIClass.mciSendString("pause media", TemStr, TemStr.Length, 0);
            mc.state = State.mPuase;
        }
        private string GetCurrPath(string name)
        {
            if (name.Length < 1) return "";
            name = name.Trim();
            name = name.Substring(0, name.Length - 1);
            return name;
        }
        //總時間
        public int Duration
        {
            get
            {
                durLength = "";
                durLength = durLength.PadLeft(128, Convert.ToChar(" "));
                APIClass.mciSendString("status media length", durLength, durLength.Length, 0);
                durLength = durLength.Trim();
                if (durLength == "") return 0;
                return (int)(Convert.ToDouble(durLength) / 1000f);
            }
        }
        //當前時間
        public int CurrentPosition
        {
            get
            {
                durLength = "";
                durLength = durLength.PadLeft(128, Convert.ToChar(" "));
                APIClass.mciSendString("status media position", durLength, durLength.Length, 0);
                mc.iPos = (int)(Convert.ToDouble(durLength) / 1000f);
                return mc.iPos;
            }
        }
    }
    public class APIClass
    {
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern int GetShortPathName(
         string lpszLongPath,
         string shortFile,
         int cchBuffer
      );
        [DllImport("winmm.dll", EntryPoint = "mciSendString", CharSet = CharSet.Auto)]
        public static extern int mciSendString(
           string lpstrCommand,
           string lpstrReturnString,
           int uReturnLength,
           int hwndCallback
          );
    }

到此這篇關于C# WPF實現播放音頻文件的示例詳解的文章就介紹到這了,更多相關C# WPF播放音頻內容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關文章希望大家以后多多支持腳本之家！

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