public void AudioWrite(Stream stream)
{
int size = (int)stream.Length;
IntPtr h = UnmanagedManager.UnmanagedReader(stream, size);
int pcmCount = 0;
IntPtr hnow = h;
int audStat = (int)AudioSample.MSP_AUDIO_SAMPLE_CONTINUE;
while (true)
{
uint len = 6400;// 每次写入200ms音频(16k，16bit)：1帧音频20ms，10帧=200ms。16k采样率的16位音频，一帧的大小为640Byte
if (size <= 2 * len)
{
len = (uint)size;
}
if (len <= 0)
{
break;
}
if (0 == pcmCount)
{
audStat = (int)AudioSample.MSP_AUDIO_SAMPLE_FIRST;
}
errorCode = ISEDLL.QISEAudioWrite(SessionID, h + pcmCount, len, audStat, ref _epstatus, ref _recstatus);
pcmCount += (int)len;
size -= (int)len;
}
errorCode = ISEDLL.QISEAudioWrite(SessionID, h + pcmCount, 0, (int)AudioSample.MSP_AUDIO_SAMPLE_LAST, ref _epstatus, ref _recstatus);
}
public string GetAnswer()
{
uint resultLen = 0;
while (recStatus != (int)RecStatus.MSP_REC_STATUS_COMPLETE)
{
Thread.Sleep(500);//要等到服务端生成结果，避免重复调用，因此建议异步使用
IntPtr result = ISEDLL.QISEGetResult(SessionID, ref resultLen, ref _recstatus, ref errorCode);
if (recStatus == (int)RecStatus.MSP_REC_STATUS_COMPLETE)
{
return(UnmanagedManager.GetStringFromUnmanagedMemory(result));
}
}
return(null);
}
public void Login(string appid)
{
string lgi_param = "appid = {0}";
lgi_param = string.Format(lgi_param, appid);
errorCode = ISEDLL.MSPLogin(null, null, lgi_param);
if (errorCode == (int)ErrorCode.MSP_SUCCESS)
{
string ise_ssb_param = "sub=ise,category=read_sentence,language=en_us,aue=speex-wb;7,auf=audio/L16;rate=16000";
var hSessionID = ISEDLL.QISESessionBegin(ise_ssb_param, null, ref errorCode);
if (errorCode == (int)ErrorCode.MSP_SUCCESS)
{
SessionID = UnmanagedManager.GetStringFromUnmanagedMemory(hSessionID);
}
}
}