zhao：解决麦克风设备名字过长限制导致找不到麦克风设备的问题

Common/system/FFMpeg.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Linq;
 using System.Text;
 using System.Threading;
 
@@ -104,7 +105,7 @@ namespace Common.system
             }
             if (IsRecordMicrophone)
             {
-                MicrophoneName = GetInDeviceFull();
+                MicrophoneName = GetInDeviceName();
                 if (!string.IsNullOrWhiteSpace(MicrophoneName))
                 {
                     MicrophoneStr = "-f dshow -i audio=\"" + MicrophoneName + "\" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 ";
@@ -201,7 +202,7 @@ namespace Common.system
             if (StartRecordAudio(audioMicrophonePath))
             {
                 IsRecordMicrophone = true;
-                MicrophoneName = GetInDeviceFull();
+                MicrophoneName = GetInDeviceName();
             }
             else
             {
@@ -798,6 +799,32 @@ namespace Common.system
             }
         }
 
+        /// <summary>
+        /// 获取声音输入设备
+        /// </summary>
+        /// <returns></returns>
+        public static string GetInDeviceName()
+        {
+            var devices = new List<WaveInCapabilities>();
+            int waveInDevices = WaveIn.DeviceCount;
+            for (int i = 0; i < waveInDevices; i++)
+            {
+                devices.Add(WaveIn.GetCapabilities(i));
+            }
+            List<string> devs = new List<string>();
+            devs = devices.Select(item => item.ProductName).ToList();
+
+            if (devs.Count > 0)
+            {
+                byte[] buffer = Encoding.UTF8.GetBytes(devs[0]);
+                string MicrophoneName = Encoding.UTF8.GetString(buffer); // 统一使用UTF-8
+                return MicrophoneName;
+            }
+            else
+            {
+                return "";
+            }
+        }
         /// <summary>
         /// 获取声音输入设备完整名称
         /// </summary>