C# WPF实现播放音频文件的示例详解
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这篇文章主要为大家详细介绍了利用C# WPF实现播放音频文件的相关知识,文中的示例代码讲解详细,感兴趣的小伙伴可以跟随小编一起学习一下
C#播放音频文件的方式：
播放系统事件声音
使用System.Media.SoundPlayer播放wav
使用MCI Command String多媒体设备程序接口播放mp3，wav，avi等
使用WindowsMediaPlayer的COM组件来播放(可视化)
使用DirectX播放音频文件
使用Speech播放(朗读器，可朗读文本)
这里讲不需要引用dll就能播放音频的几种方式：
1、播放系统事件声音
System.Media.SystemSounds.Asterisk.Play(); //星号 System.Media.SystemSounds.Beep.Play(); //提示音 System.Media.SystemSounds.Exclamation.Play(); //感叹 System.Media.SystemSounds.Hand.Play(); //协助 System.Media.SystemSounds.Question.Play(); //问题
2、使用MCI Command String播放音频文件，可以支持多种格式(mp3，wav，avi)，且不需要额外引用dll，可以循环播放音频
public class AudioPlayer
{
public AudioPlayer()
{
}
//定义API函数使用的字符串变量
[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;
//定义播放状态枚举变量
public enum State
{
mPlaying = 1,
mPuase = 2,
mStop = 3
};
//结构变量
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();
//取得播放文件属性
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); //单次播放
//APIClass.mciSendString("play media repeat", TemStr, TemStr.Length, 0); //循环播放
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;
}
//总时间
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);
}
}
//当前时间
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
);
}到此这篇关于C# WPF实现播放音频文件的示例详解的文章就介绍到这了,更多相关C# WPF播放音频内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！