public int Start()
{
uint dsErr = this.dscb8.Start(DSLibNatives.DSCBSTART_LOOPING);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("开始录音失败, DSERROR = {0}", dsErr);
return((int)dsErr);
}
this.isRunning = true;
Task.Factory.StartNew((state) =>
{
while (this.isRunning)
{
// 这里需要实时获取通知对象的指针, 因为这个指针的值每隔一段时间会改变。。。
IntPtr lpHandles = Marshal.UnsafeAddrOfPinnedArrayElement(this.notifyHwnd_close, 0);
// DSLibNatives.WaitForSingleObject(this.close_notifyHwnd[0], DSLibNatives.INFINITE);
switch (DSLibNatives.WaitForMultipleObjects(DSLibConsts.NotifyEvents, lpHandles, false, DSLibNatives.INFINITE))
{
case DSLibNatives.WAIT_OBJECT_0:
{
(state as SynchronizationContext).Send((o) =>
{
try
{
byte[] audioData = null;
if (this.RecordCapturedData(0, (uint)this.wfx.nAvgBytesPerSec, out audioData) == DSERR.DS_OK)
{
if (this.AudioDataCaptured != null)
{
this.AudioDataCaptured(audioData);
}
}
}
catch (Exception ex)
{
DSLibUtils.PrintLog("保存音频流异常, Exception = {0}", ex);
}
}, null);
DSLibNatives.ResetEvent(this.notifyHwnd_close[0]);
}
break;
case DSLibNatives.WAIT_OBJECT_0 + 1:
{
// 录音结束
DSLibNatives.ResetEvent(this.notifyHwnd_close[1]);
this.isRunning = false;
}
break;
case DSLibNatives.WAIT_FAILED:
{
int error = Marshal.GetLastWin32Error();
// 失败, 句柄已经被销毁
DSLibUtils.PrintLog("WAIT_FAILED, LastWin32Error = {0}", error);
this.isRunning = false;
this.Stop();
if (this.OnError != null)
{
this.OnError(error);
}
}
break;
}
}
}, SynchronizationContext.Current);
return((int)dsErr);
}
public int Play()
{
uint dsErr = this.dsb8.Play(0, 0, (int)DSBPLAY.DSBPLAY_LOOPING);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("Play失败, DSERR = {0}", dsErr);
return((int)dsErr);
}
this.isPlaying = true;
this.NotifyStatusChanged(DSLibPlayerStatus.Playing, 0);
Task.Factory.StartNew((state) =>
{
while (this.isPlaying)
{
//IntPtr lpHandles = Marshal.UnsafeAddrOfPinnedArrayElement(this.notifyHwnd_close, 0);
//switch (DSLibNatives.WaitForMultipleObjects(DSLibConsts.NotifyEvents, lpHandles, false, DSLibNatives.INFINITE))
switch (DSLibNatives.WaitForSingleObject(this.notifyHwnd_close[0], DSLibNatives.INFINITE))
{
case DSLibNatives.WAIT_OBJECT_0:
{
if (this.StreamSource == null)
{
// 空数据
DSLibNatives.ResetEvent(this.notifyHwnd_close[0]);
DSLibUtils.PrintLog("StreamSource为空, 继续等待通知");
break;
}
if (!this.isPlaying)
{
// 通知是异步的,在调用了Stop之后, 如果收到通知的速度比音频流重置的速度慢（也就是说先重置了音频流，然后又收到了一次通知）, 有可能会再次读取一次数据
break;
}
byte[] buffer = new byte[this.dsbd.dwBufferBytes];
if (this.StreamSource.Read(buffer, 0, buffer.Length) == 0)
{
// 没有数据
if (this.IsStreamingBuffer)
{
DSLibUtils.PrintLog("缓冲区中没有数据, 继续等待通知");
// 清空播放缓冲区的音频数据, 不然会一直播放最后一个Buffer里的数据
(state as SynchronizationContext).Send((o) =>
{
uint e;
this.WriteDataToBuffer(EmptyBuffer, out e);
}, null);
}
else
{
DSLibUtils.PrintLog("缓冲区播放完毕, 停止播放");
this.Stop();
this.NotifyStatusChanged(DSLibPlayerStatus.Stopped, 0);
}
DSLibNatives.ResetEvent(this.notifyHwnd_close[0]);
break;
}
// 缓冲区通知
(state as SynchronizationContext).Send((o) =>
{
DSLibUtils.PrintLog("播放缓冲区数据, 大小:{0}字节", buffer.Length);
try
{
uint error;
if (this.WriteDataToBuffer(buffer, out error))
{
}
}
catch (Exception ex)
{
DSLibUtils.PrintLog("处理缓冲区回调异常, Exception = {0}", ex);
}
}, null);
DSLibNatives.ResetEvent(this.notifyHwnd_close[0]);
}
break;
case DSLibNatives.WAIT_OBJECT_0 + 1:
{
}
break;
case DSLibNatives.WAIT_FAILED:
{
int winErr = Marshal.GetLastWin32Error();
DSLibUtils.PrintLog("等待信号失败, LastWin32Error = {0}", winErr);
this.Stop();
this.NotifyStatusChanged(DSLibPlayerStatus.Error, winErr);
}
break;
}
}
Console.WriteLine("跳出循环");
}, SynchronizationContext.Current);
return((int)dsErr);
}
