私はここで見つけたクラスを拡張しました：Playing MP3s using MCI http://www.codeproject.com そして、制御可能な複数のサウンドで使いやすくなっています。
そのほとんど自明、多分誰かがsomewhenコードのこの部分を使用してこのスレッドの金庫にいくつかの時間を見つけるか、多分それを改善するためのいくつかの主要なものがあります：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
namespace someNameHere
{
public class MP3Player
{
private string Pcommand, FName,alias;
private bool Opened, Playing, Paused, Loop,
MutedAll, MutedLeft, MutedRight;
private int rVolume, lVolume, aVolume,
tVolume, bVolume, VolBalance;
private ulong Lng;
private long Err;
private static int counter = 0;
public static List<MP3Player> currentlyActive = new List<MP3Player>();
public static List<MP3Player> lastFiveActive = new List<MP3Player>();
[DllImport("winmm.dll")]
private static extern long mciSendString(string strCommand,
StringBuilder strReturn, int iReturnLength,
IntPtr hwndCallback);
public MP3Player()
{
Opened = false;
Pcommand = "";
FName = "";
Playing = false;
Paused = false;
Loop = false;
MutedAll = MutedLeft = MutedRight = false;
rVolume = lVolume = aVolume =
tVolume = bVolume = 1000;
Lng = 0;
VolBalance = 0;
Err = 0;
counter++;
alias = "alias" + counter.ToString();
currentlyActive = cleanUpActive();
currentlyActive.Add(this);
}
~MP3Player()
{
currentlyActive.Remove(this);
}
private List<MP3Player> cleanUpActive()
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
cachedList = (from c in cachedList where c.AudioLength == c.CurrentPosition select c).ToList();
foreach (MP3Player eachSound in cachedList)
{
eachSound.Stop();
eachSound.Close();
}
return (from c in currentlyActive where c.AudioLength != c.CurrentPosition select c).ToList();
}
public static void playRandomFromFolder(string relpath, bool checkIfInLast)
{
try
{
string currentdir = Environment.CurrentDirectory;
string[] Files = Directory.GetFiles(currentdir + relpath);
Random randNum = new Random();
List<string> list_paths = (from c in lastFiveActive select c.FileName).ToList();
string randomFile = "";
int i = 0;
while (true)
{
int zufall = randNum.Next(0, Files.Length);
if (!list_paths.Contains(Files[zufall]) || i > 10)
{
randomFile = Files[zufall];
break;
}
}
MP3Player playIt = new MP3Player();
playIt.Open(randomFile);
playIt.Play();
}
catch (Exception err)
{
// MessageBox.Show(err.Message);
}
}
#region AllActiveFunctions
public static void stopAllActive()
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.Stop();
}
}
public static void pauseAllActive()
{
foreach (MP3Player eachSound in currentlyActive)
{
eachSound.Pause();
}
}
public static void playAllActive()
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.Play();
}
}
public static void setVolumeAllActive(int i)
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.VolumeAll = i;
}
}
public static void setVolumeLeft(int i)
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.VolumeLeft = i;
}
}
public static void setVolumeRight(int i)
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.VolumeRight = i;
}
}
public static void setVolumeTreble(int i)
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.VolumeTreble = i;
}
}
public static void setVolumeBass(int i)
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.VolumeBass = i;
}
}
public static void setBalance(int i)
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
foreach (MP3Player eachSound in cachedList)
{
eachSound.Balance = i;
}
}
public static void stopLast()
{
List<MP3Player> cachedList = new List<MP3Player>(currentlyActive);
cachedList.Last().Stop();
}
#endregion
#region Volume
public bool MuteAll
{
get
{
return MutedAll;
}
set
{
MutedAll = value;
if (MutedAll)
{
Pcommand = "setaudio " + alias + " off";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
else
{
Pcommand = "setaudio " + alias + " on";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public bool MuteLeft
{
get
{
return MutedLeft;
}
set
{
MutedLeft = value;
if (MutedLeft)
{
Pcommand = "setaudio " + alias + " left off";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
else
{
Pcommand = "setaudio " + alias + " left on";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public bool MuteRight
{
get
{
return MutedRight;
}
set
{
MutedRight = value;
if (MutedRight)
{
Pcommand = "setaudio " + alias + " right off";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
else
{
Pcommand = "setaudio " + alias + " right on";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public int VolumeAll
{
get
{
return aVolume;
}
set
{
if (Opened && (value >= 0 && value <= 1000))
{
aVolume = value;
Pcommand = String.Format("setaudio " + alias + "" +
" volume to {0}", aVolume);
if ((Err = mciSendString(Pcommand, null, 0,
IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public int VolumeLeft
{
get
{
return lVolume;
}
set
{
if (Opened && (value >= 0 && value <= 1000))
{
lVolume = value;
Pcommand = String.Format("setaudio " + alias + "" +
" left volume to {0}", lVolume);
if ((Err = mciSendString(Pcommand, null, 0,
IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public int VolumeRight
{
get
{
return rVolume;
}
set
{
if (Opened && (value >= 0 && value <= 1000))
{
rVolume = value;
Pcommand = String.Format("setaudio" +
" " + alias + " right volume to {0}", rVolume);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public int VolumeTreble
{
get
{
return tVolume;
}
set
{
if (Opened && (value >= 0 && value <= 1000))
{
tVolume = value;
Pcommand = String.Format("setaudio " + alias + "" +
" treble to {0}", tVolume);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public int VolumeBass
{
get
{
return bVolume;
}
set
{
if (Opened && (value >= 0 && value <= 1000))
{
bVolume = value;
Pcommand = String.Format("setaudio " + alias + " bass to {0}",
bVolume);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
public int Balance
{
get
{
return VolBalance;
}
set
{
if (Opened && (value >= -1000 && value <= 1000))
{
VolBalance = value;
if (value < 0)
{
Pcommand = "setaudio " + alias + " left volume to 1000";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Pcommand = String.Format("setaudio " + alias + " right" +
" volume to {0}", 1000 + value);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
else
{
Pcommand = "setaudio " + alias + " right volume to 1000";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Pcommand = String.Format("setaudio " + alias + "" +
" left volume to {0}", 1000 - value);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
}
#endregion
#region Main Functions
public string FileName
{
get
{
return FName;
}
}
public bool Looping
{
get
{
return Loop;
}
set
{
Loop = value;
}
}
public void Seek(ulong Millisecs)
{
if (Opened && Millisecs <= Lng)
{
if (Playing)
{
if (Paused)
{
Pcommand = String.Format("seek " + alias + " to {0}", Millisecs);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
else
{
Pcommand = String.Format("seek " + alias + " to {0}", Millisecs);
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Pcommand = "play " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
}
}
}
}
private void CalculateLength()
{
StringBuilder str = new StringBuilder(128);
mciSendString("status " + alias + " length", str, 128, IntPtr.Zero);
Lng = Convert.ToUInt64(str.ToString());
}
public ulong AudioLength
{
get
{
if (Opened) return Lng;
else return 0;
}
}
public void Close()
{
if (Opened)
{
Pcommand = "close " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Opened = false;
Playing = false;
Paused = false;
OnCloseFile(new CloseFileEventArgs());
}
}
public void Open(string sFileName)
{
if (!Opened)
{
Pcommand = "open \"" + sFileName +
"\" type mpegvideo alias " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
FName = sFileName;
Opened = true;
Playing = false;
Paused = false;
Pcommand = "set " + alias + " time format milliseconds";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Pcommand = "set " + alias + " seek exactly on";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
CalculateLength();
OnOpenFile(new OpenFileEventArgs(sFileName));
}
else
{
this.Close();
this.Open(sFileName);
}
}
private void stackLastFive(MP3Player latest)
{
if (lastFiveActive.Count() > 5)
{
lastFiveActive.Reverse();
lastFiveActive = lastFiveActive.Take(4).ToList();
}
lastFiveActive.Add(latest);
}
public void Play()
{
if (Opened)
{
if (!Playing)
{
Playing = true;
Pcommand = "play " + alias + "";
if (Loop) Pcommand += " REPEAT";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
OnPlayFile(new PlayFileEventArgs());
}
else
{
if (!Paused)
{
Pcommand = "seek " + alias + " to start";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Pcommand = "play " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
OnPlayFile(new PlayFileEventArgs());
}
else
{
Paused = false;
Pcommand = "play " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
OnPlayFile(new PlayFileEventArgs());
}
}
stackLastFive(this);
}
}
public void Pause()
{
if (Opened)
{
if (!Paused)
{
Paused = true;
Pcommand = "pause " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
OnPauseFile(new PauseFileEventArgs());
}
else
{
Paused = false;
Pcommand = "play " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
OnPlayFile(new PlayFileEventArgs());
}
}
}
public void Stop()
{
if (Opened && Playing)
{
Playing = false;
Paused = false;
Pcommand = "seek " + alias + " to start";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
Pcommand = "stop " + alias + "";
if ((Err = mciSendString(Pcommand, null, 0, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
currentlyActive.Remove(this);
OnStopFile(new StopFileEventArgs());
}
}
public ulong CurrentPosition
{
get
{
if (Opened && Playing)
{
StringBuilder s = new StringBuilder(128);
Pcommand = "status " + alias + " position";
if ((Err = mciSendString(Pcommand, s, 128, IntPtr.Zero)) != 0)
OnError(new ErrorEventArgs(Err));
return Convert.ToUInt64(s.ToString());
}
else return 0;
}
}
#endregion
#region Event Handling
public delegate void OpenFileEventHandler(Object sender,
OpenFileEventArgs oea);
public delegate void PlayFileEventHandler(Object sender,
PlayFileEventArgs pea);
public delegate void PauseFileEventHandler(Object sender,
PauseFileEventArgs paea);
public delegate void StopFileEventHandler(Object sender,
StopFileEventArgs sea);
public delegate void CloseFileEventHandler(Object sender,
CloseFileEventArgs cea);
public delegate void ErrorEventHandler(Object sender,
ErrorEventArgs eea);
public event OpenFileEventHandler OpenFile;
public event PlayFileEventHandler PlayFile;
public event PauseFileEventHandler PauseFile;
public event StopFileEventHandler StopFile;
public event CloseFileEventHandler CloseFile;
public event ErrorEventHandler Error;
protected virtual void OnOpenFile(OpenFileEventArgs oea)
{
if (OpenFile != null) OpenFile(this, oea);
}
protected virtual void OnPlayFile(PlayFileEventArgs pea)
{
if (PlayFile != null) PlayFile(this, pea);
}
protected virtual void OnPauseFile(PauseFileEventArgs paea)
{
if (PauseFile != null) PauseFile(this, paea);
}
protected virtual void OnStopFile(StopFileEventArgs sea)
{
if (StopFile != null) StopFile(this, sea);
}
protected virtual void OnCloseFile(CloseFileEventArgs cea)
{
if (CloseFile != null) CloseFile(this, cea);
if (currentlyActive.Contains(this))
{
currentlyActive.Remove(this);
}
}
protected virtual void OnError(ErrorEventArgs eea)
{
if (Error != null) Error(this, eea);
}
}
public class OpenFileEventArgs : EventArgs
{
public OpenFileEventArgs(string filename)
{
this.FileName = filename;
}
public readonly string FileName;
}
public class PlayFileEventArgs : EventArgs
{
public PlayFileEventArgs()
{
}
}
public class PauseFileEventArgs : EventArgs
{
public PauseFileEventArgs()
{
}
}
public class StopFileEventArgs : EventArgs
{
public StopFileEventArgs()
{
}
}
public class CloseFileEventArgs : EventArgs
{
public CloseFileEventArgs()
{
}
}
public class ErrorEventArgs : EventArgs
{
public ErrorEventArgs(long Err)
{
this.ErrNum = Err;
}
public readonly long ErrNum;
}
#endregion
}
OK]をクリックして、これはに別の方法であります単に音を出すだけです。それほど快適ではない：| – Harry