public override int Initialize(IDictionary parameters)
{
base.Initialize(parameters);
#region waveInOpen
WAVEFORMATEX wfx = new WAVEFORMATEX()
{
nChannels = (short)this.Channel,
nSamplesPerSec = this.SamplesPerSec,
wBitsPerSample = (short)this.BitsPerSample,
nBlockAlign = this.BlockAlign,
nAvgBytesPerSec = this.BytesPerSec,
cbSize = 0,
wFormatTag = 1
};
this.free_pwfx = PInvoke.StructureToPtr(wfx);
this.waveInProcDlg = new waveIn.waveInProcDlg(this.waveInProc);
int code = waveIn.waveInOpen(out this.hwi, waveIn.WAVE_MAPPER, this.free_pwfx, this.waveInProcDlg, 0, waveIn.WAVE_FORMAT_DIRECT | waveIn.CALLBACK_FUNCTION);
if (code != MMSYSERR.MMSYSERR_NOERROR)
{
logger.ErrorFormat("waveInOpen失败, MMSYSERROR = {0}", code);
return(DotNETCode.FAILED);
}
#endregion
#region waveInPrepareHeader
waveIn.wavehdr_tag wh = new waveIn.wavehdr_tag()
{
lpData = this.free_pAudioData = Marshal.AllocHGlobal((int)(BlockAlign * SamplesPerSec)),
dwBufferLength = (uint)(BlockAlign * SamplesPerSec),
dwFlags = 0x00000002
};
this.whSize = Marshal.SizeOf(typeof(waveIn.wavehdr_tag));
this.free_pwh = PInvoke.StructureToPtr(wh);
code = waveIn.waveInPrepareHeader(hwi, this.free_pwh, (uint)this.whSize);
if (code != MMSYSERR.MMSYSERR_NOERROR)
{
logger.ErrorFormat("waveInPrepareHeader失败, MMSYSERROR = {0}", code);
return(DotNETCode.FAILED);
}
#endregion
#region waveInAddBuffer
if ((code = waveIn.waveInAddBuffer(hwi, this.free_pwh, (uint)this.whSize)) != MMSYSERR.MMSYSERR_NOERROR)
{
logger.ErrorFormat("waveInAddBuffer失败, MMSYSERROR = {0}", code);
return(DotNETCode.FAILED);
}
#endregion
return(DotNETCode.SUCCESS);
}
private void waveInProc(IntPtr hwi, uint uMsg, uint dwInstance, uint dwParam1, uint dwParam2)
{
switch (uMsg)
{
case (uint)waveIn.uMsgEnum.WIM_OPEN:
logger.InfoFormat("OPEN");
break;
case (uint)waveIn.uMsgEnum.WIM_DATA:
if (!this.isRunning)
{
break;
}
waveIn.wavehdr_tag hdr = (waveIn.wavehdr_tag)Marshal.PtrToStructure(this.free_pwh, typeof(waveIn.wavehdr_tag));
// 处理音频数据
{
byte[] buffer = new byte[hdr.dwBytesRecorded];
Marshal.Copy(hdr.lpData, buffer, 0, buffer.Length);
this.NotifyDataReceived(buffer);
}
int code = waveIn.waveInAddBuffer(hwi, this.free_pwh, (uint)this.whSize);
if (code != MMSYSERR.MMSYSERR_NOERROR)
{
logger.ErrorFormat("waveInAddBuffer失败, MMSYSERROR = {0}", code);
}
break;
case (uint)waveIn.uMsgEnum.WIM_CLOSE:
logger.InfoFormat("CLOSE");
break;
default:
throw new NotImplementedException();
}
}
