private bool CreateBufferNotifications()
{
uint 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)
{
LibUtils.PrintLog("GetFormat失败, DSERROR = {0}", dsErr);
return(false);
}
_DSBPOSITIONNOTIFY[] rgdsbpn = new _DSBPOSITIONNOTIFY[LibConsts.NotifyEvents];
this.notifyHwnd_close = new IntPtr[LibConsts.NotifyEvents];
for (int i = 0; i < LibConsts.NotifyEvents; i++)
{
this.notifyHwnd_close[i] = LibNatives.CreateEvent(IntPtr.Zero, true, false, null);
}
rgdsbpn[0].dwOffset = (uint)(wfx.nAvgBytesPerSec - 1);
rgdsbpn[0].hEventNotify = this.notifyHwnd_close[0];
rgdsbpn[1].dwOffset = LibNatives.DSBPN_OFFSETSTOP;
rgdsbpn[1].hEventNotify = this.notifyHwnd_close[1];
dsErr = dsNotify8.SetNotificationPositions(LibConsts.NotifyEvents, Marshal.UnsafeAddrOfPinnedArrayElement(rgdsbpn, 0));
if (dsErr != DSERR.DS_OK)
{
LibUtils.PrintLog("SetNotificationPositions失败, DSERROR = {0}", dsErr);
return(false);
}
}
finally
{
Marshal.Release(pdsNotify8);
}
return(true);
}
private bool CreateBufferNotifications()
{
uint dsErr = DSERR.DS_OK;
// 获取IDirectSoundNotify8接口
Guid iid_dsNotify8 = new Guid(IID.IID_IDirectSoundNotify8);
IntPtr pdsNotify8;
IDirectSoundNotify8 dsNotify8;
Marshal.QueryInterface(this.pdsb8, ref iid_dsNotify8, out pdsNotify8);
dsNotify8 = Marshal.GetObjectForIUnknown(pdsNotify8) as IDirectSoundNotify8;
try
{
uint written;
tWAVEFORMATEX wfx;
dsErr = this.dsb8.GetFormat(out wfx, (uint)Marshal.SizeOf(typeof(tWAVEFORMATEX)), out written);
if (dsErr != DSERR.DS_OK)
{
LibUtils.PrintLog("GetFormat失败, DSERR = {0}", dsErr);
return(false);
}
this.rgdsbpn = new _DSBPOSITIONNOTIFY[LibConsts.BUFF_NOTIFY_TIMES];
this.notifyHwnd_close = new IntPtr[LibConsts.BUFF_NOTIFY_TIMES];
for (int idx = 0; idx < LibConsts.BUFF_NOTIFY_TIMES; idx++)
{
IntPtr pHandle = LibNatives.CreateEvent(IntPtr.Zero, false, false, null);
this.notifyHwnd_close[idx] = pHandle;
this.rgdsbpn[idx].dwOffset = (uint)(LibConsts.BUFF_NOTIFY_SIZE * idx);
this.rgdsbpn[idx].hEventNotify = pHandle;
}
dsErr = dsNotify8.SetNotificationPositions(LibConsts.BUFF_NOTIFY_TIMES, Marshal.UnsafeAddrOfPinnedArrayElement(rgdsbpn, 0));
if (dsErr != DSERR.DS_OK)
{
LibUtils.PrintLog("SetNotificationPositions失败, DSERROR = {0}", dsErr);
return(false);
}
}
finally
{
Marshal.Release(pdsNotify8);
}
return(true);
}
