linux sdk, 小程序接通音频电话后没有声音，设备端log如下，帮看下问题

[09:13:42.518][D][WMPF][249:251][components/voip/voip_manager.cc:142][Call]: Calling name:name open_id:ozQFY5DriRbJDhVtf4JsMCBxzcLc

voip_status = 0

audio_open primary device_type 1

open ./h264.h264 fail

open h264.h264 fail

open input.pcm fail

voip_status = 1

audio_open_output_stream user_data=0xb5f00944

        sample_rate 8000

        channel_layout 2

        sample_format 2

        frame_count 10

        bytes = 2

audio_open_output_stream stream = 0xb5f09d78 return 0xb5f009e8

audio_stream_out_resume

[09:13:43.115][I][WMPF][249:251][components/voip/voip_manager.cc:241][operator()]: ConfService Init begin

[09:13:43.115][I][WMPF][249:251][components/voip/conf_service.cc:915][Init]: VoIP Init Start

wx_wsclient_create

init ws

[09:13:43.138][I][WMPF][249:251][components/voip/conf_service.cc:918][Init]: VoIP Init End

[09:13:43.138][I][WMPF][249:251][components/voip/voip_manager.cc:248][operator()]: ConfService Init end

[09:13:43.138][I][WMPF][249:251][components/voip/voip_manager.cc:175][Call]: JoinRoom begin

wx_wsclient_connectt fd 1

wx_wsclient_send fd 1 size 297

wx_wsclient_send fd 1 size 518

INFO: BINARY=234 bytes

wx_wsclient_send fd 1 size 297

INFO: BINARY=60 bytes

INFO: BINARY=638 bytes

audio_open primary device_type 0

[09:13:43.973][I][WMPF][249:260][components/voip/voip_manager.cc:180][Call]: JoinRoom end

voip_status = 1

INFO: BINARY=60 bytes

INFO: BINARY=604 bytes

wx_wsclient_send fd 1 size 297

audio_open_input_stream user_data=0x4c6964

        sample_rate 16000

        channel_layout 2

        sample_format 2

        frame_count 320

        bytes = 2

audio_open_input_stream stream = 0x4d8f60 return 0x4d8f98

audio_stream_in_resume

INFO: BINARY=234 bytes

INFO: BINARY=60 bytes

wx_wsclient_send fd 1 size 297

INFO: BINARY=60 bytes

INFO: BINARY=645 bytes

wx_wsclient_send fd 1 size 297

audio_open_output_stream user_data=0x4c663c

        sample_rate 16000

        channel_layout 2

        sample_format 2

        frame_count 100

        bytes = 2

audio_open_output_stream stream = 0x670a70 return 0x670aa8

audio_stream_out_resume

voip_status = 2

audio_stream_out_flush

audio_stream_out_pause

free out stream 0xb5f09d78

INFO: BINARY=234 bytes

INFO: BINARY=60 bytes

wx_wsclient_send fd 1 size 297

free in stream 0x4d8f60

audio_device_close

audio_stream_out_flush

audio_stream_out_pause

free out stream 0x670a70

audio_device_close

voip_status = 7

[09:14:01.240][I][WMPF][249:260][components/voip/conf_service.cc:1220][OnCallEnd]: OnCallEnd errCode: 0