ios端， 通话中有device提醒之后AudioSession问题

Start by reproducing the interruption scenario with the reported Flutter and iOS versions, then trace the audio-session handling in audio_device_ios.mm, TXCAudioSessionManager.mm, and audio_unit_wrapper.mm. Use the reported AudioUnit error and repeated restart logs to identify the failure path; done means the call resumes audio after the alarm without repeated initialization failures or warning 1204 events.

您好，我在用TRTC的电话功能，
在iOS的device下打电话中，有Alarm之后，拿回来AudioSession的动作看起来有问题。
如下有 Flutter doctor 与 当时出来的Error。
麻烦您们看一下
谢谢。

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.16.5, on macOS 14.2.1 23C71 darwin-arm64 (Rosetta), locale en-KR)
[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
[✓] Xcode - develop for iOS and macOS (Xcode 15.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2021.3)
[✓] VS Code (version 1.85.1)
[✓] Connected device (6 available)
[✓] Network resources

tencent_trtc_cloud: ^2.5.9

[I][01-10/15:23:11.502+9.0][4784,107779][audio_device_ios.mm:1181]AudioDeviceIOS OnAudioSessionInterruptionBegin
[I][01-10/15:23:11.504+9.0][4784,107779][audio_device_ios.mm:793]ResetAudioUnit done.
[I][01-10/15:23:11.515+9.0][4784,109315][trtc_pipeline.cc:3815][39c0]AudioDevice: interrupted by another audio session
[I][01-10/15:23:11.553+9.0][4784,259][TXCAudioSessionManager.mm:241]AudioSession RouteChange NSConcreteNotification 0x283c832e0 {name = AVAudioSessionRouteChangeNotification; object = <AVAudioSession: 0x283fe5c00>; userInfo = {
    AVAudioSessionRouteChangePreviousRouteKey = "<AVAudioSessionRouteDescription: 0x283ff9c90, \ninputs = (\n    \"<AVAudioSessionPortDescription: 0x283ffbda0, type = MicrophoneBuiltIn; name = iPhone \\Ub9c8\\Uc774\\Ud06c; UID = Built-In Microphone; selectedDataSource = \\Ud558\\Ub2e8>\"\n); \noutputs = (\n    \"<AVAudioSessionPortDescription: 0x283ffbcd0, type = Speaker; name = \\Uc2a4\\Ud53c\\Ucee4; UID = Speaker; selectedDataSource = (null)>\"\n)>";
    AVAudioSessionRouteChangeReasonKey = 3;
}}
[I][01-10/15:23:11.994+9.0][4784,107779][audio_device_ios.mm:1375]OnAudioSessionOtherAppPlayoutStateChanged is_playing=1
[I][01-10/15:23:11.995+9.0][4784,109315][trtc_pipeline.cc:3863][39c0]AudioDevice: other app start playing(iOS)
[I][01-10/15:23:14.227+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1040
[I][01-10/15:23:14.616+9.0][4784,259][TXCAudioSessionManager.mm:203]AudioSession Interrupt NSConcreteNotification 0x283c847c0 {name = AVAudioSessionInterruptionNotification; object = <AVAudioSession: 0x283fe5c00>; userInfo = {
    AVAudioSessionInterruptionOptionKey = 1;
    AVAudioSessionInterruptionTypeKey = 0;
}}
[I][01-10/15:23:14.616+9.0][4784,107779][audio_device_ios.mm:1193]AudioDeviceIOS OnAudioSessionInterruptionEnd shouldResume 1
[I][01-10/15:23:14.616+9.0][4784,107779][audio_device_ios.mm:793]ResetAudioUnit done.
[I][01-10/15:23:14.616+9.0][4784,107779][ear_monitoring.cc:160]Clear EarMonitoring buffer
[I][01-10/15:23:14.619+9.0][4784,107779][audio_device_ios.mm:733]StartAudioUnit need_record=1 expect_route=kSpeakerPhone need_voip=1
[W][01-10/15:23:14.629+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:14.629+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[W][01-10/15:23:14.731+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:14.731+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[I][01-10/15:23:14.833+9.0][4784,107779][audio_device_ios.mm:744]StartAudioUnit done. initialize audio unit failed with system error1701737535.
[I][01-10/15:23:14.834+9.0][4784,107779][audio_device_ios.mm:758]StartAudioUnit hardware input gain: 1.0
[I][01-10/15:23:14.834+9.0][4784,107779][scoped_duration_calculator.cc:23]StartAudioUnit cost 215ms
[I][01-10/15:23:14.842+9.0][4784,109315][trtc_pipeline.cc:3832][39c0]AudioDevice: restart play device failed because of resuming from interruption. system error:1701737535. initialize audio unit failed. category:AVAudioSessionCategoryPlayAndRecord, options:13, mode:AVAudioSessionModeVoiceChat, hardware sample rate:48000, IO duration: 0.0213333, other APP is playing, playout volume[5] is too low, system in VOIP mode, play device:kSpeakerPhone
[I][01-10/15:23:15.992+9.0][4784,107779][audio_device_ios.mm:1375]OnAudioSessionOtherAppPlayoutStateChanged is_playing=0
[I][01-10/15:23:15.993+9.0][4784,109315][trtc_pipeline.cc:3863][39c0]AudioDevice: other app stop playing(iOS)
[I][01-10/15:23:16.413+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1060
[W][01-10/15:23:17.008+9.0][4784,109315][local_channel_base.cc:141][local-trtc][39c0] Audio No frame sent for 5 seconds
[I][01-10/15:23:17.008+9.0][4784,109315][local_channel_manager.cc:921][local-trtc][39c0] Will update media state from [Audio:Has] to [None], by local:0
[I][01-10/15:23:17.310+9.0][4784,109315][local_channel_manager.cc:935][local-trtc][39c0] Request update media state
[I][01-10/15:23:17.311+9.0][4784,109315][signal_task.cc:117][local-trtc][39c0] C2SRequest: {cmd:C2SSubscribeRequest, seq:1985909827}
[I][01-10/15:23:17.323+9.0][4784,109315][signal_manager.cc:1027][local-trtc][39c0] Signal: C2SResponse: C2SSubscribeResponse, Seq: 1985909827, Tinyid: 144115243948468019, ErrorCode: 0, ErrorHandleMethod: 0
[I][01-10/15:23:17.991+9.0][4784,107779][audio_device_ios.mm:1428]AudioUnit is abnormal. is_interrupted=0 is_background=0
[I][01-10/15:23:17.992+9.0][4784,107779][audio_device_ios.mm:793]ResetAudioUnit done.
[I][01-10/15:23:17.992+9.0][4784,107779][ear_monitoring.cc:160]Clear EarMonitoring buffer
[W][01-10/15:23:17.993+9.0][4784,109315][trtc_pipeline.cc:3697][39c0]trtc_api: OnAudioWarning [code:1204|msg:AudioDevice: may be a problem with the audio capture device. ]
[I][01-10/15:23:17.997+9.0][4784,107779][audio_device_ios.mm:733]StartAudioUnit need_record=1 expect_route=kSpeakerPhone need_voip=1
[W][01-10/15:23:18.005+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:18.005+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[W][01-10/15:23:18.107+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:18.107+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[I][01-10/15:23:18.209+9.0][4784,107779][audio_device_ios.mm:744]StartAudioUnit done. initialize audio unit failed with system error1701737535.
[I][01-10/15:23:18.210+9.0][4784,107779][audio_device_ios.mm:758]StartAudioUnit hardware input gain: 1.0
[I][01-10/15:23:18.210+9.0][4784,107779][scoped_duration_calculator.cc:23]StartAudioUnit cost 214ms
[W][01-10/15:23:18.216+9.0][4784,107779][audio_device_ios.mm:1453]AudioUnit is abnormal. restart audiounit failed. code=initialize audio unit failed with system error1701737535.
[I][01-10/15:23:18.216+9.0][4784,109315][trtc_pipeline.cc:3832][39c0]AudioDevice: restart capture device. system error:1701737535. initialize audio unit failed. category:AVAudioSessionCategoryPlayAndRecord, options:13, mode:AVAudioSessionModeVoiceChat, hardware sample rate:48000, IO duration: 0.0213333, playout volume[5] is too low, system in VOIP mode, play device:kSpeakerPhone
[I][01-10/15:23:18.216+9.0][4784,109315][pipeline_notification_receiver.cc:72]Receive notification, abnormal event id 10012 msg: AudioDevice: may be a problem with the audio capture device.
[I][01-10/15:23:18.554+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1040
[I][01-10/15:23:20.707+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1040
[I][01-10/15:23:22.869+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1040
[I][01-10/15:23:22.992+9.0][4784,107779][audio_device_ios.mm:1428]AudioUnit is abnormal. is_interrupted=0 is_background=0
[I][01-10/15:23:22.992+9.0][4784,107779][audio_device_ios.mm:793]ResetAudioUnit done.
[W][01-10/15:23:22.992+9.0][4784,109315][trtc_pipeline.cc:3697][39c0]trtc_api: OnAudioWarning [code:1204|msg:AudioDevice: may be a problem with the audio capture device. ]
[I][01-10/15:23:22.992+9.0][4784,107779][ear_monitoring.cc:160]Clear EarMonitoring buffer
[I][01-10/15:23:22.999+9.0][4784,107779][audio_device_ios.mm:733]StartAudioUnit need_record=1 expect_route=kSpeakerPhone need_voip=1
[W][01-10/15:23:23.009+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:23.009+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[W][01-10/15:23:23.110+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:23.110+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[I][01-10/15:23:23.213+9.0][4784,107779][audio_device_ios.mm:744]StartAudioUnit done. initialize audio unit failed with system error1701737535.
[I][01-10/15:23:23.214+9.0][4784,107779][audio_device_ios.mm:758]StartAudioUnit hardware input gain: 1.0
[I][01-10/15:23:23.215+9.0][4784,107779][scoped_duration_calculator.cc:23]StartAudioUnit cost 216ms
[W][01-10/15:23:23.222+9.0][4784,107779][audio_device_ios.mm:1453]AudioUnit is abnormal. restart audiounit failed. code=initialize audio unit failed with system error1701737535.
[I][01-10/15:23:23.222+9.0][4784,109315][trtc_pipeline.cc:3832][39c0]AudioDevice: restart capture device. system error:1701737535. initialize audio unit failed. category:AVAudioSessionCategoryPlayAndRecord, options:13, mode:AVAudioSessionModeVoiceChat, hardware sample rate:48000, IO duration: 0.0213333, playout volume[5] is too low, system in VOIP mode, play device:kSpeakerPhone
[I][01-10/15:23:23.223+9.0][4784,109315][pipeline_notification_receiver.cc:72]Receive notification, abnormal event id 10012 msg: AudioDevice: may be a problem with the audio capture device.
[I][01-10/15:23:25.048+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1060
[I][01-10/15:23:27.187+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1040
[I][01-10/15:23:27.992+9.0][4784,107779][audio_device_ios.mm:1428]AudioUnit is abnormal. is_interrupted=0 is_background=0
[I][01-10/15:23:27.992+9.0][4784,107779][audio_device_ios.mm:793]ResetAudioUnit done.
[I][01-10/15:23:27.992+9.0][4784,107779][ear_monitoring.cc:160]Clear EarMonitoring buffer
[W][01-10/15:23:27.992+9.0][4784,109315][trtc_pipeline.cc:3697][39c0]trtc_api: OnAudioWarning [code:1204|msg:AudioDevice: may be a problem with the audio capture device. ]
[I][01-10/15:23:28.000+9.0][4784,107779][audio_device_ios.mm:733]StartAudioUnit need_record=1 expect_route=kSpeakerPhone need_voip=1
[W][01-10/15:23:28.009+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:28.009+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[W][01-10/15:23:28.111+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:28.111+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[I][01-10/15:23:28.214+9.0][4784,107779][audio_device_ios.mm:744]StartAudioUnit done. initialize audio unit failed with system error1701737535.
[I][01-10/15:23:28.215+9.0][4784,107779][audio_device_ios.mm:758]StartAudioUnit hardware input gain: 1.0
[I][01-10/15:23:28.216+9.0][4784,107779][scoped_duration_calculator.cc:23]StartAudioUnit cost 217ms
[W][01-10/15:23:28.223+9.0][4784,107779][audio_device_ios.mm:1453]AudioUnit is abnormal. restart audiounit failed. code=initialize audio unit failed with system error1701737535.
[I][01-10/15:23:28.223+9.0][4784,109315][trtc_pipeline.cc:3832][39c0]AudioDevice: restart capture device. system error:1701737535. initialize audio unit failed. category:AVAudioSessionCategoryPlayAndRecord, options:13, mode:AVAudioSessionModeVoiceChat, hardware sample rate:48000, IO duration: 0.0213333, playout volume[5] is too low, system in VOIP mode, play device:kSpeakerPhone
[I][01-10/15:23:28.225+9.0][4784,109315][pipeline_notification_receiver.cc:72]Receive notification, abnormal event id 10012 msg: AudioDevice: may be a problem with the audio capture device.
[I][01-10/15:23:29.368+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1060
[I][01-10/15:23:31.525+9.0][4784,131587][packet_buffer.cc:342][[39c0]:[uid:68][type:Audio][tinyid:144115242427185940]] Buffer is full, drop 108 packets. max_cache: 1200 current cache: 1060
[I][01-10/15:23:32.992+9.0][4784,107779][audio_device_ios.mm:1428]AudioUnit is abnormal. is_interrupted=0 is_background=0
[I][01-10/15:23:32.992+9.0][4784,107779][audio_device_ios.mm:793]ResetAudioUnit done.
[I][01-10/15:23:32.992+9.0][4784,107779][ear_monitoring.cc:160]Clear EarMonitoring buffer
[W][01-10/15:23:32.992+9.0][4784,109315][trtc_pipeline.cc:3697][39c0]trtc_api: OnAudioWarning [code:1204|msg:AudioDevice: may be a problem with the audio capture device. ]
[I][01-10/15:23:32.999+9.0][4784,107779][audio_device_ios.mm:733]StartAudioUnit need_record=1 expect_route=kSpeakerPhone need_voip=1
[W][01-10/15:23:33.009+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:33.009+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[W][01-10/15:23:33.110+9.0][4784,107779][audio_unit_wrapper.mm:602]Failed to initialize the audiounit. code=1701737535
[W][01-10/15:23:33.111+9.0][4784,107779][audio_unit_wrapper.mm:604]try audio unit initialization again...
[I][01-10/15:23:33.213+9.0][4784,107779][audio_device_ios.mm:744]StartAudioUnit done. initialize audio unit failed with system error1701737535.
[I][01-10/15:23:33.215+9.0][4784,107779][audio_device_ios.mm:758]StartAudioUnit hardware input gain: 1.0
[I][01-10/15:23:33.215+9.0][4784,107779][scoped_duration_calculator.cc:23]StartAudioUnit cost 216ms