修复tts奔溃问题，允许混音。9.19

local_plugins/azure_speech/ios/azure_speech/Sources/azure_speech/AzureTtsHelper.swift

@@ -124,10 +124,33 @@ public class AzureTtsHelper: NSObject, ITtsService {
      */
     public func startspeak(sessionid sessionid: String)-> Bool {
         self.sessionid = sessionid
-
+        print("startspeak sessionid \(sessionid)")
         // 重置当前会话的文本计数
         self.currentSessionTextCount = 0
         self.pendingTextCount = 0
+    
+        do {
+            // 新增：使用 AVAudioSession.sharedInstance 配置为“通话模式 + 扬声器外放”
+            // - 使用 .playAndRecord 以保证通话上下行链路
+            // - 使用 .voiceChat 获得通话处理（AEC 等）
+            // - 使用 .defaultToSpeaker 默认走外放
+            // - 通过 overrideOutputAudioPort(.speaker) 强制切到扬声器
+            let audioSession = AVAudioSession.sharedInstance()
+            
+            //try audioSession.setActive(false)
+            try audioSession.setCategory(.playAndRecord,
+                                         mode: .voiceChat,
+                                         options: [.defaultToSpeaker, 
+                                          .mixWithOthers,
+                                                .defaultToSpeaker,
+                                                .allowBluetoothA2DP,
+                                                .allowBluetooth])
+            try audioSession.overrideOutputAudioPort(.none)
+            try audioSession.setActive(true)
+        } catch {
+            print("音频会话配置失败: \(error.localizedDescription)")
+        }
+    
         return true
     }
     
@@ -187,7 +210,7 @@ public class AzureTtsHelper: NSObject, ITtsService {
         totalTextCount += text.count
         currentSessionTextCount += text.count
         
-        print("流式合成文本\(text.count)，总计文本数量：\(totalTextCount)，当前会话：\(currentSessionTextCount)")
+        //print("流式合成文本\(text.count)，总计文本数量：\(totalTextCount)，当前会话：\(currentSessionTextCount)")
         
         // 清理文本并添加到缓冲区
         let cleanedText = cleanTextForTTS(text)

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

@@ -445,30 +445,6 @@ public class MicrophoneCapture: NSObject {
         // 安全地处理音频会话
         guard let audioSession = audioSession else { return }
         
-        do {
-            try audioSession.setActive(false)
-            
-            if self.hasBluetoothDevices {
-                // 设置音频会话参数
-                try audioSession.setCategory(.playback, 
-                                               mode: .videoChat,    
-                                               options: [
-                                                .allowBluetoothA2DP,
-                                                .allowBluetooth
-                                            ]) // 添加音频优先级控制
-            } else {
-                try audioSession.setCategory(.playback, 
-                                               mode: .videoChat,    
-                                               options: [
-                                                .mixWithOthers,
-                                                .defaultToSpeaker])
-            }
-            
-            try audioSession.overrideOutputAudioPort(.none)
-            try audioSession.setActive(true)
-        } catch {
-            print("音频会话配置失败: \(error.localizedDescription)")
-        }
     }
     
     /**

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

@@ -193,12 +193,15 @@ public class SimpleAudioReceiver: NSObject {
             // 确保正在写入状态
             guard self._isWriting else { return }
              // 设置音频会话参数
-            try audioSession.setCategory(.playAndRecord, 
+           try audioSession.setCategory(.playAndRecord,
-                                       mode: .videoChat,    
+                                         mode: .voiceChat,
-                                       options: [.allowBluetoothA2DP, // 允许蓝牙耳机，不占用hfp链路
+                                         options: [.defaultToSpeaker, 
-                                                .mixWithOthers,
+                                          .mixWithOthers,
-                                                .defaultToSpeaker]) // 添加音频优先级控制
+                                                .defaultToSpeaker,
-           try audioSession.setActive(true)
+                                                .allowBluetoothA2DP,
+                                                .allowBluetooth])
+            try audioSession.overrideOutputAudioPort(.none)
+            try audioSession.setActive(true)
            try micCapture.startCapture()
            try micCapture.audioDataHandler = { data in
                 self.writeQueue.put(data)
@@ -264,37 +267,7 @@ public class SimpleAudioReceiver: NSObject {
  * 强制使用设备内置扬声器或听筒
  */
 public func disableBluetoothAudio() {
-    // do {
+  
-    //     print("禁用蓝牙音频功能，切换回正常音频模式")
-        
-    //     // 暂停当前音频引擎
-    //     if _isWriting {
-    //         audioEngine?.pause()
-    //         try audioSession.setActive(false)
-    //     }
-        
-    //     // 设置音频会话为不允许蓝牙
-    //     try audioSession.setCategory(
-    //         .playAndRecord,
-    //         mode: .videoChat,
-    //         options: [.defaultToSpeaker, .mixWithOthers] // 移除 .allowBluetooth
-    //     )
-        
-    //     // 强制使用扬声器
-    //     try audioSession.overrideOutputAudioPort(.speaker)
-        
-    //     // 重新激活音频会话
-    //     if _isWriting {
-    //         try audioSession.setActive(true)
-    //         try audioEngine?.start()
-    //     }
-        
-    //     // 更新当前路由状态
-    //     currentRoute = .speaker
-        
-    // } catch {
-    //     print("禁用蓝牙音频失败: \(error.localizedDescription)")
-    // }
 }
 
 /**
@@ -369,57 +342,7 @@ public func restoreOriginalAudioState() {
     
     public func setAudioOutputRoute(_ route: AudioOutputRoute) {
         
-        // do {
+      
-        //     // 
-        //     if self._isWriting {
-        //         print("当前正在识别")
-        //         micCapture.stopCapture()
-        //         // 先停用以避免冲突
-        //         try audioSession.setActive(false)
-                
-        //     }
-        //     print("setAudioOutputRoutecurrent,route=\(route)")
-        //     switch route {
-        //     case .speaker:
-        //         print("setAudioOutputRoutecurrent,speaker")
-        //         // 使用扬声器时必须用videoChat模式
-        //         try audioSession.setCategory(
-        //             .playAndRecord, 
-        //             mode: .videoChat,
-        //             options: [.defaultToSpeaker,.allowBluetooth,.mixWithOthers]
-        //         )
-        //         try audioSession.overrideOutputAudioPort(.speaker)
-                
-        //     case .receiver:
-        //         // 听筒模式使用voiceChat节省资源
-        //         try audioSession.setCategory(
-        //             .playAndRecord, 
-        //             mode: .voiceChat,
-        //             options: [.allowBluetooth]
-        //         )
-        //         try audioSession.overrideOutputAudioPort(.none)
-                
-        //     case .bluetooth:
-        //         // 完整蓝牙设备支持
-        //         try audioSession.setCategory(
-        //             .playAndRecord, 
-        //             mode: .voiceChat,
-        //             options: [.allowBluetooth, .allowBluetoothA2DP]
-        //         )
-        //         try audioSession.overrideOutputAudioPort(.none)
-        //         // 不需要override，系统自动路由
-        //     }
-        //     self.currentRoute = route
-        //     if self._isWriting {
-                
-        //         // 重新激活
-        //         try audioSession.setActive(true, options: [.notifyOthersOnDeactivation])
-        //        try micCapture.startCapture()
-                
-        //     }
-        // } catch {
-        //     print("路由切换失败: \(error)")
-        // }
     }