private bool CreateCaptureBuffer()
{
uint dsErr = DSERR.DS_OK;
#region 创建默认音频流格式
this.wfx = new tWAVEFORMATEX()
{
nChannels = LibConsts.Channels,
nSamplesPerSec = LibConsts.SamplesPerSec,
wBitsPerSample = LibConsts.BitsPerSample,
nBlockAlign = LibConsts.BlockAlign,
nAvgBytesPerSec = LibConsts.Bps,
cbSize = 0,
wFormatTag = LibNatives.WAVE_FORMAT_PCM
};
this.pwfx_free = LibUtils.StructureToPtr(this.wfx);
this.dsbd = new _DSCBUFFERDESC()
{
dwFlags = 0,
dwSize = Marshal.SizeOf(typeof(_DSCBUFFERDESC)),
dwReserved = 0,
dwFXCount = 0,
dwBufferBytes = LibConsts.BufferSize,
lpwfxFormat = this.pwfx_free,
lpDSCFXDesc = IntPtr.Zero
};
#endregion
IntPtr pdscb;
Guid iid_dscb8;
dsErr = this.dsc8.CreateCaptureBuffer(ref this.dsbd, out pdscb, IntPtr.Zero); //TestInvoke2(this.free_bufferDesc, out ppDSCBuff);
if (dsErr == DSERR.DS_OK)
{
// 获取IDirectSoundCaptureBuffer8接口实例
iid_dscb8 = new Guid(IID.IID_IDirectSoundCaptureBuffer8);
Marshal.QueryInterface(pdscb, ref iid_dscb8, out this.pdscb8);
Marshal.Release(pdscb);
this.dscb8 = Marshal.GetObjectForIUnknown(this.pdscb8) as IDirectSoundCaptureBuffer8;
}
else
{
LibUtils.PrintLog("CreateCaptureBuffer失败, DSERROR = {0}", dsErr);
return(false);
}
return(true);
}
private bool CreateSecondaryBuffer()
{
uint dsErr = DSERR.DS_OK;
#region 创建默认音频流格式
this.wfx = new tWAVEFORMATEX()
{
nChannels = LibConsts.Channels,
nSamplesPerSec = LibConsts.SamplesPerSec,
wBitsPerSample = LibConsts.BitsPerSample,
nBlockAlign = LibConsts.BlockAlign,
nAvgBytesPerSec = LibConsts.Bps,
cbSize = 0,
wFormatTag = LibNatives.WAVE_FORMAT_PCM
};
this.pwfx_free = LibUtils.StructureToPtr(this.wfx);
this.dsbd = new _DSBUFFERDESC()
{
dwSize = Marshal.SizeOf(typeof(_DSBUFFERDESC)),
dwFlags = DSBCAPS.DSBCAPS_CTRLPOSITIONNOTIFY | DSBCAPS.DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS.DSBCAPS_GLOBALFOCUS | DSBCAPS.DSBCAPS_CTRLVOLUME,
lpwfxFormat = this.pwfx_free,
guid3DAlgorithm = new _GUID(),
dwBufferBytes = LibConsts.PLAY_BUFF_SIZE,
dwReserved = 0
};
#endregion
IntPtr pdsb;
dsErr = this.ds8.CreateSoundBuffer(ref this.dsbd, out pdsb, IntPtr.Zero);
if (dsErr != DSERR.DS_OK)
{
LibUtils.PrintLog("CreateSoundBuffer失败, DSERR = {0}", dsErr);
return(false);
}
Guid iid_dsb8 = new Guid(IID.IID_IDirectSoundBuffer8);
Marshal.QueryInterface(pdsb, ref iid_dsb8, out this.pdsb8);
Marshal.Release(pdsb);
this.dsb8 = Marshal.GetObjectForIUnknown(this.pdsb8) as IDirectSoundBuffer8;
return(true);
}
