/// <summary>
/// 结束喊话
/// </summary>
private void StopCollectSound()
{
try
{
if (!IsRecoding)
{
return;
}
//停止音频采集
var rtn = PcmAudio.waveInStop(hRecord);
if (rtn == 0) //停止采集成功，立即重置设备,重置设备将会导致所有的buffer反馈给程序
{
IsRecoding = false;
//ShowMsg("停止采集音频数据。");
rtn = PcmAudio.waveInReset(hRecord); //重置设备
}
Thread.Sleep(500);
if (rtn == 0) //重置设备成功，立即关闭设备
{
rtn = PcmAudio.waveInClose(hRecord); //关闭设备
}
//GC.Collect();
}
catch (Exception ex)
{
//ShowMsg(ex.Message);
}
}
/// <summary>
/// 开始喊话
/// </summary>
private void StartCollectSound()
{
try
{
if (IsRecoding)
{
return;
}
////初始化音频编码解码
//EvrcProtocal.InitEncoder();
//EvrcProtocal.InitDecoder();
EvrcProtocal.StartSpeech();
var rtn = 0;
hRecord = IntPtr.Zero;
rtn = PcmAudio.waveInOpen(out hRecord, -1, ref lpFormat, _wd, 0, 0x00030000);
if (rtn == 0)//成功返回0
{
//将准备好的buffer提供给音频输入设备
for (int i = 0; i < MAXRECBUFFER; i++)
{
//准备一个bufrer给输入设备
PcmAudio.waveInPrepareHeader(hRecord, ref globalhdr[i], (UInt32)Marshal.SizeOf(typeof(PcmAudio.WaveHdr)));
//发送一个buffer给指定的输入设备，当buffer填满将会通知程序
PcmAudio.waveInAddBuffer(hRecord, ref globalhdr[i], (UInt32)Marshal.SizeOf(typeof(PcmAudio.WaveHdr)));
}
//开启指定的输入采集设备
rtn = PcmAudio.waveInStart(hRecord);
if (rtn == 0)
{
IsRecoding = true;
//ShowMsg("正在采集音频数据...");
}
else
{
//ShowMsg("采集音频失败");
}
}
}
catch (Exception ex)
{
//ShowMsg(ex.Message);
}
}
/// <summary>
/// 喊话处理
/// </summary>
/// <param name="hdr"></param>
private void OnSoundData(PcmAudio.WaveHdr hdr)
{
if (!IsRecoding)
{
return;
}
if (hdr.dwBytesRecorded == 0)
{
return;
}
//使采集过程，直到此buffer已经沾满，不能再填充
PcmAudio.waveInUnprepareHeader(hRecord, ref hdr, (UInt32)Marshal.SizeOf(typeof(PcmAudio.WaveHdr)));
//将采集到的声音发送给播放线程
if (hdr.lpData != IntPtr.Zero)
{
DataProc(hdr.dwBytesRecorded, hdr.lpData);
}
}