语音播报

 //语音对讲
        public bool SpeackVoice(int IdentifyID,int UlChannelId, string filePath)
        {
            bool status = false;
            try
            {
                LPPU_VOICE_INFO_S lppu = new LPPU_VOICE_INFO_S();
                lppu.ulChannelId = UlChannelId;
                lppu.szLocalAudioIp = "0.0.0.0";
                lppu.bFeedAudioData = true;
                lppu.szReserved = string.Empty;
                int ulVoiceTBHandle = SDK.IVS_PU_StartVoiceBroadcast(IdentifyID, ref lppu);
                int k = SDK.IVS_PU_GetLastError();
                var erro = SDK.IVS_PU_GetErrorMsg(k);
                Log.Info($"华为sdk-IVS_PU_StartVoiceBroadcast方法返回信息:{erro}");
                int readLength = 0;  //定义读取的长度
                long sentFileLength = 0;//定义发送的长度
                int iOneLength = 340 * 3;
                byte[] buffer = new byte[iOneLength];
                using (FileStream fsRead = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Read))
                {
                    long fileLength = fsRead.Length;//文件长度
                    while ((readLength = fsRead.Read(buffer, 0, buffer.Length)) > 0 && sentFileLength < fileLength)
                    {
                        sentFileLength += readLength;
                        IntPtr pName = IntPtr.Zero;
                        pName = Marshal.AllocHGlobal(buffer.Length);
                        Marshal.Copy(buffer, 0, pName, buffer.Length);
                        SDK.IVS_PU_FeedVoiceData(IdentifyID, ulVoiceTBHandle, pName, readLength, PU_ENCODE_TYPE_E.PU_ENC_G711U);
                        Marshal.FreeHGlobal(pName);//释放
                        Thread.Sleep(129);
                    }
                    Thread.Sleep(1000);
                    fsRead.Close();
                }
                bool stopstatus = SDK.IVS_PU_StopVoiceBroadcast(IdentifyID, ulVoiceTBHandle);//关闭语音播报
                int r = SDK.IVS_PU_GetLastError();
                var erro3 = SDK.IVS_PU_GetErrorMsg(r);
                DelectDir(filePath);//播报完毕删除文件
                if (stopstatus)
                {
                    Log.Info($"关闭语音播报成功--{DateTime.Now}");
                }
                else
                {
                    Log.Info($"关闭语音播报失败{erro3}--{DateTime.Now}");
                }
                bool Cancelstatus =  SDK.IVS_PU_Logout(IdentifyID);//注销设备
                if (Cancelstatus)
                {
                    Log.Info($"注销设备成功--{DateTime.Now}");
                }
                else
                {
                    Log.Info($"注销设备失败--{DateTime.Now}");
                }
            }
            catch (Exception ex)
            {
                Log.Error($"语音播报错误{ex.Message}");              
            }
            finally
            {
                var a = IPCLogout(IdentifyID);
            }
            return status;
        }