/// <summary> /// 处理错误 /// </summary> /// <param name="errorMsg">错误的函数</param> /// <param name="ret">错误的返回值</param> /// <param name="sessionID">sessionID</param> /// <param name="fs">打开的文件</param> private void HandleErrorMsg(string errorMsg, int ret, string sessionID, FileStream fs) { Utils.CustomPrint(errorMsg + " err,errCode=" + ((ErrorCode)ret).ToString("G")); DllImports.QISRSessionEnd(sessionID, errorMsg); if (fs != null) { fs.Close(); fs = null; } }
/// <summary> /// 运行声音识别功能 /// </summary> /// <returns></returns> public IEnumerator RunISR() { ///模拟录音,输入音频 if (!File.Exists(path)) { Utils.CustomPrint("文件" + path + "不存在!"); yield break; } const int BUFFER_NUM = 640 * 10;/// 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 int ret = 0; string result = ""; int len; int audStatus = (int)AudioStatus.MSP_AUDIO_SAMPLE_CONTINUE; ///音频状态 int epStatus = (int)EpStatus.MSP_EP_NULL; ///端点检测 int recStatus = (int)RecogStatus.MSP_REC_NULL; ///识别状态 int rsltStatus = (int)RecogStatus.MSP_REC_NULL; bool first = true; int errcode = 0; Utils.CustomPrint("上传语法 ...+\r\n"); string grammarID = GetGrammarID(); if (!string.IsNullOrEmpty(grammarID)) { Utils.CustomPrint("上传语法成功\r\n"); } else { Utils.CustomPrint("MSPUploadData error"); yield break; } IntPtr ptrSessionID = DllImports.QISRSessionBegin(grammarID, sessionISRBeginParams, out errcode); string sessionID = Marshal.PtrToStringAnsi(ptrSessionID); if (ErrorCode.MSP_SUCCESS != (ErrorCode)errcode) { Utils.CustomPrint("QISRSessionBegin err,errCode=" + ((ErrorCode)errcode).ToString("G")); yield break; } FileStream fp = new FileStream(path, FileMode.Open); byte[] buff = new byte[BUFFER_NUM]; IntPtr bp = Marshal.AllocHGlobal(BUFFER_NUM); while (fp.Position != fp.Length) { len = fp.Read(buff, 0, BUFFER_NUM); Marshal.Copy(buff, 0, bp, buff.Length); audStatus = (int)AudioStatus.MSP_AUDIO_SAMPLE_CONTINUE; if (first) { audStatus = (int)AudioStatus.MSP_AUDIO_SAMPLE_FIRST; first = false; } Utils.CustomPrint(">"); ///开始向服务器发送音频数据 ret = DllImports.QISRAudioWrite(sessionID, bp, (uint)len, audStatus, ref epStatus, ref recStatus); if (ErrorCode.MSP_SUCCESS != (ErrorCode)ret) { HandleErrorMsg("QISRAudioWrite", ret, sessionID, fp); yield break; } if (EpStatus.MSP_EP_AFTER_SPEECH == (EpStatus)epStatus) { break; } ///sleep一下很有必要,防止MSC端无缓冲的识别结果时浪费CPU资源 yield return(new WaitForSeconds(0.2f)); } buff = null; fp.Close(); fp = null; Marshal.FreeHGlobal(bp); ret = DllImports.QISRAudioWrite(sessionID, IntPtr.Zero, 0, (int)AudioStatus.MSP_AUDIO_SAMPLE_LAST, ref epStatus, ref recStatus); if (ErrorCode.MSP_SUCCESS != (ErrorCode)ret) { HandleErrorMsg("QISRAudioWrite", ret, sessionID, null); yield break; } ///最后一块数据发完之后,循环从服务器端获取结果 ///考虑到网络环境不好的情况下,需要对循环次数作限定 while (RecogStatus.MSP_REC_STATUS_COMPLETE != (RecogStatus)rsltStatus) { IntPtr rec_result = DllImports.QISRGetResult(sessionID, ref rsltStatus, 0, out ret); if (ErrorCode.MSP_SUCCESS != (ErrorCode)ret) { HandleErrorMsg("QISRGetResult", ret, sessionID, null); yield break; } if (IntPtr.Zero != rec_result) { string tmp = Marshal.PtrToStringAnsi(rec_result); Utils.CustomPrint("---:" + tmp); result += tmp; Utils.CustomPrint("传完音频后返回结果!:" + result); } yield return(new WaitForSeconds(0.2f)); } ret = DllImports.QISRSessionEnd(sessionID, "Normal"); if (ErrorCode.MSP_SUCCESS != (ErrorCode)ret) { Utils.CustomPrint("QISRSessionEnd failed, errCode=" + ((ErrorCode)ret).ToString("G")); } ptrSessionID = IntPtr.Zero; Utils.CustomPrint("识别完成\r\n"); yield break; }