public int Initialize()
{
#region waveInOpen
WAVEFORMATEX wfx = new WAVEFORMATEX()
{
nChannels = Channels,
nSamplesPerSec = SamplesPerSec,
wBitsPerSample = BitsPerSample,
nBlockAlign = BlockAlign,
nAvgBytesPerSec = (uint)(BlockAlign * SamplesPerSec),
cbSize = 0,
wFormatTag = 1
};
this.free_pwfx = LibUtils.StructureToPtr(wfx);
this.waveInProcDlg = new waveNatives.waveInProcDlg(this.waveInProc);
int retValue = waveNatives.waveInOpen(out this.hwi, waveNatives.WAVE_MAPPER, this.free_pwfx, this.waveInProcDlg, 0, waveNatives.WAVE_FORMAT_DIRECT | waveNatives.CALLBACK_FUNCTION);
if (retValue != MMSYSERR.MMSYSERR_NOERROR)
{
LibUtils.PrintLog("waveInOpen失败, MMSYSERROR = {0}", retValue);
return(retValue);
}
#endregion
#region waveInPrepareHeader
wavehdr_tag wh = new wavehdr_tag()
{
lpData = this.free_pAudioData = Marshal.AllocHGlobal((int)(BlockAlign * SamplesPerSec)),
dwBufferLength = (BlockAlign * SamplesPerSec),
dwFlags = 0x00000002
};
this.whSize = Marshal.SizeOf(typeof(wavehdr_tag));
this.free_pwh = LibUtils.StructureToPtr(wh);
retValue = waveNatives.waveInPrepareHeader(hwi, this.free_pwh, (uint)this.whSize);
if (retValue != MMSYSERR.MMSYSERR_NOERROR)
{
LibUtils.PrintLog("waveInPrepareHeader失败, MMSYSERROR = {0}", retValue);
return(retValue);
}
#endregion
#region waveInAddBuffer
retValue = waveNatives.waveInAddBuffer(hwi, this.free_pwh, (uint)this.whSize);
if (retValue != MMSYSERR.MMSYSERR_NOERROR)
{
LibUtils.PrintLog("waveInAddBuffer失败, MMSYSERROR = {0}", retValue);
return(retValue);
}
#endregion
return(MMSYSERR.MMSYSERR_NOERROR);
}
private void waveInProc(IntPtr hwi, uint uMsg, uint dwInstance, uint dwParam1, uint dwParam2)
{
switch (uMsg)
{
case (uint)waveNatives.uMsgEnum.WIM_OPEN:
LibUtils.PrintLog("OPEN");
break;
case (uint)waveNatives.uMsgEnum.WIM_DATA:
if (this.isStop)
{
break;
}
wavehdr_tag hdr = (wavehdr_tag)Marshal.PtrToStructure(this.free_pwh, typeof(wavehdr_tag));
// 处理音频数据
{
byte[] buffer = new byte[hdr.dwBytesRecorded];
Marshal.Copy(hdr.lpData, buffer, 0, buffer.Length);
if (this.AudioCaptured != null)
{
this.AudioCaptured(buffer);
}
}
int retValue = waveNatives.waveInAddBuffer(hwi, this.free_pwh, (uint)this.whSize);
if (retValue != MMSYSERR.MMSYSERR_NOERROR)
{
LibUtils.PrintLog("waveInAddBuffer失败, MMSYSERROR = {0}", retValue);
}
break;
case (uint)waveNatives.uMsgEnum.WIM_CLOSE:
LibUtils.PrintLog("CLOSE");
break;
}
}
