public int Release()
{
Marshal.FreeHGlobal(this.pBufferDesc_free);
Marshal.FreeHGlobal(this.pwfx_free);
Marshal.Release(this.pdscb8);
Marshal.Release(this.pdsc8);
//Marshal.ReleaseComObject(this.dscb8);
//Marshal.ReleaseComObject(this.dsc8);
Marshal.FinalReleaseComObject(this.dscb8);
Marshal.FinalReleaseComObject(this.dsc8);
this.pBufferDesc_free = IntPtr.Zero;
this.pwfx_free = IntPtr.Zero;
this.pdscb8 = IntPtr.Zero;
this.pdsc8 = IntPtr.Zero;
this.dscb8 = null;
this.dsc8 = null;
foreach (var hwnd in this.notifyHwnd_close)
{
DSLibNatives.CloseHandle(hwnd);
}
this.notifyHwnd_close = null;
return((int)DSERR.DS_OK);
}
private bool CreateBufferNotifications(out uint dsErr)
{
dsErr = DSERR.DS_OK;
// 获取IDirectSoundNotify8接口
Guid iid_dsNotify8 = new Guid(IID.IID_IDirectSoundNotify8);
IntPtr pdsNotify8;
IDirectSoundNotify8 dsNotify8;
Marshal.QueryInterface(this.pdscb8, ref iid_dsNotify8, out pdsNotify8);
dsNotify8 = Marshal.GetObjectForIUnknown(pdsNotify8) as IDirectSoundNotify8;
try
{
tWAVEFORMATEX wfx;
int pdwSizeWritten;
dsErr = this.dscb8.GetFormat(out wfx, Marshal.SizeOf(typeof(tWAVEFORMATEX)), out pdwSizeWritten);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("GetFormat失败, DSERROR = {0}", dsErr);
return(false);
}
_DSBPOSITIONNOTIFY[] rgdsbpn = new _DSBPOSITIONNOTIFY[DSLibConsts.NotifyEvents];
this.notifyHwnd_close = new IntPtr[DSLibConsts.NotifyEvents];
for (int i = 0; i < DSLibConsts.NotifyEvents; i++)
{
this.notifyHwnd_close[i] = DSLibNatives.CreateEvent(IntPtr.Zero, true, false, null);
}
rgdsbpn[0].dwOffset = (uint)(wfx.nAvgBytesPerSec - 1);
rgdsbpn[0].hEventNotify = this.notifyHwnd_close[0];
rgdsbpn[1].dwOffset = DSLibNatives.DSBPN_OFFSETSTOP;
rgdsbpn[1].hEventNotify = this.notifyHwnd_close[1];
dsErr = dsNotify8.SetNotificationPositions(DSLibConsts.NotifyEvents, Marshal.UnsafeAddrOfPinnedArrayElement(rgdsbpn, 0));
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("SetNotificationPositions失败, DSERROR = {0}", dsErr);
return(false);
}
}
finally
{
Marshal.Release(pdsNotify8);
}
return(true);
}
private bool CreateIDirectSoundCapture8(out uint dsErr)
{
dsErr = DSERR.DS_OK;
dsErr = DSLibNatives.DirectSoundCaptureCreate8(IntPtr.Zero, out this.pdsc8, IntPtr.Zero);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("DirectSoundCaptureCreate8失败, DSERROR = {0}", dsErr);
return(false);
}
this.dsc8 = Marshal.GetObjectForIUnknown(this.pdsc8) as IDirectSoundCapture8;
return(true);
}
public int Stop()
{
this.isPlaying = false;
uint dsErr = this.dsb8.Stop();
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("Stop失败, DSERR = {0}", dsErr);
}
DSLibNatives.SetEvent(this.notifyHwnd_close[0]);
return((int)dsErr);
}
//public int Pause()
//{
// return DSERR.DS_OK;
//}
//public int Restore()
//{
// return DSERR.DS_OK;
//}
#endregion
#region 实例方法
private bool CreateIDirectSound8(IntPtr hwnd, out uint dsErr)
{
dsErr = DSLibNatives.DirectSoundCreate8(IntPtr.Zero, out this.pds8, IntPtr.Zero);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("DirectSoundCreate8失败, DSERR = {0}", dsErr);
return(false);
}
this.ds8 = Marshal.GetObjectForIUnknown(this.pds8) as IDirectSound8;
dsErr = this.ds8.SetCooperativeLevel(hwnd, (int)DSSCL.DSSCL_NORMAL);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.PrintLog("SetCooperativeLevel失败, DSERR = {0}", dsErr);
return(false);
}
return(true);
}
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);
}
