Question

我只想在audioOutput_PlaybackStopped中显示消息框。有人可以帮忙吗？我用了Naudio。

这是我的代码：

public void playRecordedUser()
        {

            pcm = new WaveChannel32(new WaveFileReader(@"D:\2.wav"));
            //.PadWithZeroes = false;
           reductionStream = new BlockAlignReductionStream(pcm);
            waveOutDevice = new DirectSoundOut();
            waveOutDevice.PlaybackStopped += new EventHandler<StoppedEventArgs>(audioOutput_PlaybackStopped);
            waveOutDevice.Init(reductionStream);
            waveOutDevice.Play();
           // pcm.Close();
           // waveOutDevice.Dispose();
        }

        void audioOutput_PlaybackStopped(object sender, StoppedEventArgs e)
        {
            MessageBox.Show("hey");
            waveOutDevice.Stop();
            reductionStream.Close();
            waveOutDevice.Dispose();
            waveOutDevice = null;
            pcm.Close();
        }

Answer 1

问题是WaveChannel32继续在您提供的流的末尾返回数据，因此输出将继续播放。

而不是您当前的WaveFileReader - ＆gt; WaveChannel32 - ＆gt; BlockAlignReductionStream链，试试WaveFileReader - ＆gt; BlockAlignReductionStream - ＆gt; Wave16ToFloatProvider喜欢这样：

var reduce = new BlockAlignReductionStream(new WaveFileReader(@"D:\2.wav"));
var provider = new Wave16ToFloatProvider(reduce);

waveOutDevice = new DirectSoundOut();
waveOutDevice.PlaybackStopped += new EventHandler<StoppedEventArgs>(audioOutput_PlaybackStopped);
waveOutDevice.Init(provider);
waveOutDevice.Play();

这将播放到波形文件的末尾，然后表示播放结束。

请勿忘记在播放完成后处理reduce对象。

回放停止 - 没有提出-Naudio

1 个答案: