修复麦克风起不来的问题

local_plugins/azure_speech/ios/azure_speech/Sources/tools/SimpleAudioReceiver.swift

@@ -198,7 +198,7 @@ public class SimpleAudioReceiver: NSObject {
      * @throws 音频配置或启动错误
      */
     func startCapture(bufferHandler: @escaping (AVAudioPCMBuffer) -> Void) throws {
-        try setupAudioSession()
+       
         
         guard let audioEngine = audioEngine else {
             throw NSError(domain: "SimpleAudioReceiver", code: -1, userInfo: [NSLocalizedDescriptionKey: "Audio engine not initialized"])
@@ -216,7 +216,7 @@ public class SimpleAudioReceiver: NSObject {
         
         // 重置音频引擎（在获取格式之前）
         audioEngine.reset()
-        
+         try setupAudioSession()
         // 重新获取输入节点和格式（reset后需要重新获取）
         let inputNode = audioEngine.inputNode
         let inputFormat = inputNode.outputFormat(forBus: 0)
@@ -286,15 +286,15 @@ public class SimpleAudioReceiver: NSObject {
                 print("⏹️ 停止现有音频引擎")
             }
             
-            // try startCapture { buffer in
-            //     // 处理实时音频数据
-            //     let channelData = buffer.floatChannelData?[0]
-            //     let frameCount = buffer.frameLength
-            //     print("麦克风启动: \(frameCount)")
-            //     print("🎵 音频数据: 帧数=\(frameCount), 声道数据=\(channelData != nil ? "有效" : "无效")")
-            //     self.writeQueue.put(self.audioBufferToData(buffer))
-            //     // 分析或传输数据...
-            // }
+            try startCapture { buffer in
+                // 处理实时音频数据
+                let channelData = buffer.floatChannelData?[0]
+                let frameCount = buffer.frameLength
+                print("麦克风启动: \(frameCount)")
+                print("🎵 音频数据: 帧数=\(frameCount), 声道数据=\(channelData != nil ? "有效" : "无效")")
+                self.writeQueue.put(self.audioBufferToData(buffer))
+                // 分析或传输数据...
+            }
               try audioEngine?.start()
             print("✅ 麦克风捕获配置完成")
             
@@ -430,16 +430,18 @@ private func audioBufferToData(_ buffer: AVAudioPCMBuffer) -> Data {
 }
 
 /**
- * 设置音频会话配置
- * 确保音频会话正确配置用于录音
+ * 配置音频会话
+ * 设置录音和播放所需的音频会话参数
+ * @throws 音频会话配置失败时抛出错误
  */
 private func setupAudioSession() throws {
     try audioSession.setCategory(.playAndRecord, mode: .default, options: [.defaultToSpeaker, .allowBluetooth])
     try audioSession.setActive(true)
-    
+
     // 设置首选的音频参数
     try audioSession.setPreferredSampleRate(48000)
-    try audioSession.setPreferredInputNumberOfChannels(1)
+            // 设置输入声道数
+            try audioSession.setPreferredInputNumberOfChannels(1)
     
     print("音频会话配置成功: 采样率=\(audioSession.sampleRate)Hz, 输入声道=\(audioSession.inputNumberOfChannels)")
 }