private bool CreateCaptureBuffer(out uint dsErr)
{
dsErr = DSERR.DS_OK;
#region 创建默认音频流格式
this.wfx = new tWAVEFORMATEX()
{
nChannels = DSLibConsts.Channels,
nSamplesPerSec = DSLibConsts.SamplesPerSec,
wBitsPerSample = DSLibConsts.BitsPerSample,
nBlockAlign = DSLibConsts.BlockAlign,
nAvgBytesPerSec = DSLibConsts.Bps,
cbSize = 0,
wFormatTag = DSLibNatives.WAVE_FORMAT_PCM
};
this.pwfx_free = DSLibUtils.StructureToPtr(this.wfx);
this.bufferDesc = new _DSCBUFFERDESC()
{
dwFlags = 0,
dwSize = Marshal.SizeOf(typeof(_DSCBUFFERDESC)),
dwReserved = 0,
dwFXCount = 0,
dwBufferBytes = DSLibConsts.BufferSize,
lpwfxFormat = this.pwfx_free,
lpDSCFXDesc = IntPtr.Zero
};
this.pBufferDesc_free = DSLibUtils.StructureToPtr(this.bufferDesc);
#endregion
IntPtr pdscb;
Guid iid_dscb8;
dsErr = this.dsc8.CreateCaptureBuffer(this.pBufferDesc_free, 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
{
DSLibUtils.PrintLog("CreateCaptureBuffer失败, DSERROR = {0}", dsErr);
return(false);
}
return(true);
}
private bool CreateSecondaryBuffer(out uint dsErr)
{
dsErr = DSERR.DS_OK;
#region 创建默认音频流格式
this.wfx = new tWAVEFORMATEX()
{
nChannels = DSLibConsts.Channels,
nSamplesPerSec = DSLibConsts.SamplesPerSec,
wBitsPerSample = DSLibConsts.BitsPerSample,
nBlockAlign = DSLibConsts.BlockAlign,
nAvgBytesPerSec = DSLibConsts.Bps,
cbSize = 0,
wFormatTag = DSLibNatives.WAVE_FORMAT_PCM
};
this.pwfx_free = DSLibUtils.StructureToPtr(this.wfx);
this.dsbd = new _DSBUFFERDESC()
{
dwSize = Marshal.SizeOf(typeof(_DSBUFFERDESC)),
dwFlags = (int)DSBCAPS.DSBCAPS_CTRLPOSITIONNOTIFY | (int)DSBCAPS.DSBCAPS_GETCURRENTPOSITION2 | (int)DSBCAPS.DSBCAPS_GLOBALFOCUS,
lpwfxFormat = this.pwfx_free,
guid3DAlgorithm = new _GUID(),
dwBufferBytes = DSLibConsts.BufferSize,
dwReserved = 0
};
#endregion
IntPtr pdsb;
dsErr = this.ds8.CreateSoundBuffer(ref this.dsbd, out pdsb, IntPtr.Zero);
if (dsErr != DSERR.DS_OK)
{
DSLibUtils.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);
}