C#声音播放辅助类

/// <summary>
/// 声音播放辅助类
/// </summary>
[HostProtection(SecurityAction.LinkDemand, Resources = HostProtectionResource.ExternalProcessMgmt)]
[Browsable(false)]
[EditorBrowsable(EditorBrowsableState.Advanced)]
public class AudioHelper
{
private static SoundPlayer _SoundPlayer;

#region Methods
private static void InternalStop(SoundPlayer sound)
{
new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Assert();
try
{
sound.Stop();
}
finally
{
CodeAccessPermission.RevertAssert();
}
}

/// <summary>播放。wav声音文件。</summary>
/// <param name="location">String，包含声音文件的名称 </param>
/// <PermissionSet><IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlThread" /><IPermission class="System.Net.WebPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /></PermissionSet>
public static void Play(string location)
{
Play(location, AudioPlayMode.Background);
}

/// <summary>播放。wav声音文件.</summary>
/// <param name="playMode">AudioPlayMode枚举模式播放声音。默认情况下，AudioPlayMode.Background。</param>
/// <param name="location">String，包含声音文件的名称 </param>
/// <PermissionSet><IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlThread" /><IPermission class="System.Net.WebPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /></PermissionSet>
public static void Play(string location, AudioPlayMode playMode)
{
ValidateAudioPlayModeEnum(playMode, "playMode");
string text1 = ValidateFilename(location);
SoundPlayer player1 = new SoundPlayer(text1);
Play(player1, playMode);
}

/// <summary>播放。wav声音文件。</summary>
/// <param name="playMode">AudioPlayMode枚举模式播放声音。默认情况下，AudioPlayMode.Background。</param>
/// <param name="stream"><see cref="T:System.IO.Stream"></see> 代表的声音文件。</param>
/// <PermissionSet><IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlThread" /><IPermission class="System.Net.WebPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /></PermissionSet>
public static void Play(Stream stream, AudioPlayMode playMode)
{
ValidateAudioPlayModeEnum(playMode, "playMode");
if (stream == null)
{
throw new ArgumentNullException("stream");
}
Play(new SoundPlayer(stream), playMode);
}

/// <summary>播放。wav声音文件。</summary>
/// <param name="data">字节数组代表的声音文件。</param>
/// <param name="playMode">AudioPlayMode枚举模式播放声音。默认情况下，AudioPlayMode.Background。</param>
/// <PermissionSet><IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /><IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlThread" /><IPermission class="System.Net.WebPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" /></PermissionSet>
public static void Play(byte[] data, AudioPlayMode playMode)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
ValidateAudioPlayModeEnum(playMode, "playMode");
MemoryStream stream1 = new MemoryStream(data);
Play(stream1, playMode);
stream1.Close();
}

private static void Play(SoundPlayer sound, AudioPlayMode mode)
{
if (_SoundPlayer != null)
{
InternalStop(_SoundPlayer);
}
_SoundPlayer = sound;
switch (mode)
{
case AudioPlayMode.WaitToComplete:
_SoundPlayer.PlaySync();
return;

case AudioPlayMode.Background:
_SoundPlayer.Play();
return;

case AudioPlayMode.BackgroundLoop:
_SoundPlayer.PlayLooping();
return;
}
}

/// <summary>播放系统声音。</summary>
/// <param name="systemSound"><see cref="T:System.Media.SystemSound"></see> 对象代表系统播放声音。</param>
public static void PlaySystemSound(SystemSound systemSound)
{
if (systemSound == null)
{
throw new ArgumentNullException("systemSound");
}
systemSound.Play();
}

/// <summary>停止在后台播放声音。</summary>
/// <filterpriority>1</filterpriority>
public static void Stop()
{
SoundPlayer player1 = new SoundPlayer();
InternalStop(player1);
}

private static void ValidateAudioPlayModeEnum(AudioPlayMode value, string paramName)
{
if ((value < AudioPlayMode.WaitToComplete) || (value > AudioPlayMode.BackgroundLoop))
{
throw new InvalidEnumArgumentException(paramName, (int)value, typeof(AudioPlayMode));
}
}

private static string ValidateFilename(string location)
{
if (String.IsNullOrEmpty(location))
{
throw new ArgumentNullException("location");

}
return location;
}

 

#endregion
}

/// <summary>指示如何调用音频方法时，播放声音。</summary>
public enum AudioPlayMode
{
/// <summary>
/// 播放声音，并等待，直到它完成之前调用代码继续。
/// </summary>
WaitToComplete,

/// <summary>
/// 在后台播放声音。调用代码继续执行。
/// </summary>
Background,

/// <summary>
///直到stop方法被称为播放背景声音。调用代码继续执行。
/// </summary>
BackgroundLoop
}