Question

这可能是一个非常简单的解决办法，但对于我的生活，我无法弄清楚。

我尝试做的是在我的C＃项目中连续播放两个音频片段。但是，我不希望播放下一个剪辑，直到第一个剪辑完成播放。

总之，这就是我正在做的（旧代码）：

public static void PlayAudioClip(string path)
{
    Console.WriteLine(path) // Just so we know which file is playing.
    wplayer.controls.stop();
    wplayer.URL = path;
    wplayer.controls.play();
}

public static void CharacterTalking()
{
    PlayAudioClip(@"C:\Game\Audio\Hello world.mp3");
    PlayAudioClip(@"C:\Game\Audio\How are you today.mp3");
}

现在，不是一个接一个地播放两个片段，实际上两个片段都没有播放。我一直无法弄明白为什么。

我喜欢使用Windows Media Player库，但如果您有其他建议，请随时分享。我不需要使用Windows Media Player。

发布的类似问题here解释了如何循环文件，但这不是我想做的事情。它有助于解释我可以使用事件处理程序来检查文件的状态，但这对我的解决方案没有帮助。或许它有，我只是过度思考它。

编辑：我发现我之前没有解释过这个问题。道歉。假设我给出的这两个音频文件是而不是程序最终只有两个。我想让我的PlayAudioClip（）函数始终等待上一个剪辑完成播放。

///////////////////////////////////////

编辑2：这是一个非常复杂的圆形方式，但这是我的新尝试，使用了我学到的一些信息here。

新守则：

public static List<String> Playlist = new List<string>();
public static void AddToPlaylist(string path)
{
    Playlist.Add(path);
    Console.WriteLine("Queued " + path);
}

public static void RunPlaylist()
{
    PlayAudioClip(Playlist.First());
}

private void Wplayer_PlayStateChange(int NewState)
{
    switch (NewState)
    {
        case 0:
            WriteFancyConsoleLine("PlayState = wmppsUndefined", ConsoleColor.DarkGray);
            break;
        case 1:
            WriteFancyConsoleLine("PlayState = wmppsStopped", ConsoleColor.Red);
            try
            {
                Playlist.Remove(Playlist.First());
                try
                {
                    PlayAudioClip(Playlist.First());
                }
                catch
                {
                    WriteFancyConsoleLine("Playlist is now empty!", ConsoleColor.DarkRed);
                }
            }
            catch
            {
                WriteFancyConsoleLine("Playlist already empty!", ConsoleColor.DarkRed);
            }
            break;
        case 2:
            WriteFancyConsoleLine("PlayState = wmppsPaused", ConsoleColor.Yellow);
            break;
        case 3:
            WriteFancyConsoleLine("PlayState = wmppsPlaying", ConsoleColor.Green);
            break;
        case 4:
            WriteFancyConsoleLine("PlayState = wmppsScanForward", ConsoleColor.DarkMagenta);
            break;
        case 5:
            WriteFancyConsoleLine("PlayState = wmppsScanReverse", ConsoleColor.Magenta);
            break;
        case 6:
            WriteFancyConsoleLine("PlayState = wmppsBuffering", ConsoleColor.Gray);
            break;
        case 7:
            WriteFancyConsoleLine("PlayState = wmppsWaiting", ConsoleColor.DarkYellow);
            break;
        case 8:
            WriteFancyConsoleLine("PlayState = wmppsMediaEnded", ConsoleColor.DarkRed);
            break;
        case 9:
            WriteFancyConsoleLine("PlayState = wmppsTransitioning", ConsoleColor.DarkGray);
            break;
        case 10:
            WriteFancyConsoleLine("PlayState = wmppsReady", ConsoleColor.Magenta);
            break;
        case 11:
            WriteFancyConsoleLine("PlayState = wmppsReconnecting", ConsoleColor.Magenta);
            break;
        case 12:
            WriteFancyConsoleLine("PlayState = wmppsLast", ConsoleColor.DarkBlue);
            break;
    }
}

public static void PlayAudioClip(string path)
{
    WriteFancyConsoleLine("Playing " + path, ConsoleColor.Gray);
    wplayer.controls.stop();
    wplayer.URL = path;
    wplayer.controls.play();
}

private void CharacterTalking() // This is where the magic happens.
{
    AddToPlaylist(@"C:\Game\Audio\Hello world.mp3");
    AddToPlaylist(@"C:\Game\Audio\How are you today.mp3");
    RunPlaylist();
}

然而，第二个音频片段仍然没有播放。在控制台中，出现wmppsStopped之后，它表示它尝试播放下一个剪辑，但之后只需在wmppsTransitioning和wmppsReady之间跳转几次。

Answer 1

创建播放列表，添加歌曲，然后播放列表：

WMPLib.IWMPPlaylist Playlist = wplayer.newPlaylist("MyPlayList", "");  
Playlist.appendItem(wplayer.newMedia(@"C:\Game\Audio\Hello world.mp3"));
Playlist.appendItem(wplayer.newMedia(@"C:\Game\Audio\How are you today.mp3"));
wplayer.currentPlaylist = Playlist;
wplayer.controls.play();

Answer 2

我的问题的解决方案在这里找到：

Mediaplayer WinForm won't play

两个剪辑之后不会立即播放的原因是因为Windows Media Player需要一点时间为下一个剪辑做好准备，或者它已经崩溃。

通过在更改播放状态中设置布尔值，并从计时器调用下一个列表项，该程序现在可以正常工作。

public static List<String> Playlist = new List<string>();
public static void AddToPlaylist(string path)
{
    Playlist.Add(path);
    Console.WriteLine("Queued " + path);
}

public static void RunPlaylist()
{
    try
    {
        PlayStateStopped = false;
        PlayAudioClip(Playlist.First());
        Playlist.Remove(Playlist.First());
    }
    catch
    {
        WriteFancyConsoleLine("Playlist is empty.", ConsoleColor.Red);
    }
}

private void Wplayer_PlayStateChange(int NewState)
{
    switch (NewState)
    {
        case 0:
            WriteFancyConsoleLine("PlayState = wmppsUndefined", ConsoleColor.DarkGray);
            break;
        case 1:
            WriteFancyConsoleLine("PlayState = wmppsStopped", ConsoleColor.Red);
            PlayStateStopped = true;
            break;
        case 2:
            WriteFancyConsoleLine("PlayState = wmppsPaused", ConsoleColor.Yellow);
            break;
        case 3:
            WriteFancyConsoleLine("PlayState = wmppsPlaying", ConsoleColor.Green);
            break;
        case 4:
            WriteFancyConsoleLine("PlayState = wmppsScanForward", ConsoleColor.DarkMagenta);
            break;
        case 5:
            WriteFancyConsoleLine("PlayState = wmppsScanReverse", ConsoleColor.Magenta);
            break;
        case 6:
            WriteFancyConsoleLine("PlayState = wmppsBuffering", ConsoleColor.Gray);
            break;
        case 7:
            WriteFancyConsoleLine("PlayState = wmppsWaiting", ConsoleColor.DarkYellow);
            break;
        case 8:
            WriteFancyConsoleLine("PlayState = wmppsMediaEnded", ConsoleColor.DarkRed);
            break;
        case 9:
            WriteFancyConsoleLine("PlayState = wmppsTransitioning", ConsoleColor.DarkGray);
            break;
        case 10:
            WriteFancyConsoleLine("PlayState = wmppsReady", ConsoleColor.Magenta);
            break;
        case 11:
            WriteFancyConsoleLine("PlayState = wmppsReconnecting", ConsoleColor.Magenta);
            break;
        case 12:
            WriteFancyConsoleLine("PlayState = wmppsLast", ConsoleColor.DarkBlue);
            break;
    }
}

public static void PlayAudioClip(string path)
{
    WriteFancyConsoleLine("Playing " + path, ConsoleColor.Gray);
    wplayer.controls.stop();
    wplayer.URL = path;
    wplayer.controls.play();
    PlayStateStopped = false;
}

// Remember that timer1.Enabled = true; has to be set somewhere.
private void timer1_Tick(object sender, EventArgs e)
{
    if (PlayStateStopped)
    {
        RunPlaylist();
    }
}

无法使用Windows Media Player库播放两个音频片段

2 个答案: