ubuntu18.04 PulseAudio蓝牙耳机开启mic的解决办法

您所在的位置：网站首页 › 蓝牙hsp › ubuntu18.04 PulseAudio蓝牙耳机开启mic的解决办法

ubuntu18.04 PulseAudio蓝牙耳机开启mic的解决办法

2024-07-10 10:58| 来源: 网络整理| 查看: 265

一、背景基于Linux音频服务子系统PulseAudio(Linux默认声音服务器）进行音频开发，包括采集（record）和播放（playback）;测试中发现笔记本(ubuntu 18.04)连接蓝牙后无法读取record设备，只能识别到playback设备，经过一番折腾，发现native PulseAudio不支持HSP/HFP, 连接蓝牙耳机后，输入指令pactl list cards查看声卡信息：查看蓝牙耳机声卡Profiles： Profiles: off: Off (sinks: 0, sources: 0, priority: 0, available: yes) a2dp-sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 0, available: yes) headset-head-unit: Headset Head Unit (HSP/HFP) (sinks: 1, sources: 1, priority: 0, available: no)

可以看出此时默认只支持A2DP协议，不支持HSP/HFP，解释如下：

a2dp-sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 0, available: yes) A2DP是单向的，只支持播放（sink)，不支持录制（source);headset-head-unit: Headset Head Unit (HSP/HFP) (sinks: 1, sources: 1, priority: 0, available: no) HSP/HFP是双向的，同时支持播放（sink)和录制（source);

结论：当前系统环境下无法支持蓝牙耳机录制，就算从PulseAudio Volume Control工具下切换Configuration也是毫无意义的。

二、解决方案

查阅资料发现，可以通过安装pipewire(参考 PipeWire: The Linux audio/video bus)让PulseAudio工作在pipewire上。详细操作可以参考How to Enable PipeWire Audio Service to Replace PulseAudio in Ubuntu 21.10 & 21.04

步骤如下：

1. 通过ppa安装pipewire sudo add-apt-repository ppa:pipewire-debian/pipewire-upstream sudo apt install pipewire sudo apt install libspa-0.2-bluetooth 2. 重启系统 3. 验证pipewire是否正常安装

pactl info

sam@sam-ThinkPad-Edge-E440:~$ pactl info Server String: /run/user/1000/pulse/native Library Protocol Version: 32 Server Protocol Version: 35 Is Local: yes Client Index: 74 Tile Size: 65472 User Name: sam Host Name: sam-ThinkPad-Edge-E440 Server Name: PulseAudio (on PipeWire 0.3.39) Server Version: 15.0.0 Default Sample Specification: float32le 2ch 48000Hz Default Channel Map: front-left,front-right Default Sink: alsa_output.pci-0000_00_1b.0.analog-stereo Default Source: alsa_input.pci-0000_00_1b.0.analog-stereo Cookie: 2c95:ace7

查看Server Name出现PipeWire说明安装完成 Server Name: PulseAudio (on PipeWire 0.3.39)

4. 查看声卡Profiles

pactl list cards

Profiles: off: Off (sinks: 0, sources: 0, priority: 0, available: yes) a2dp-sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 0, available: yes) headset-head-unit: Headset Head Unit (HSP/HFP) (sinks: 1, sources: 1, priority: 0, available: yes) a2dp-sink-sbc: High Fidelity Playback (A2DP Sink, codec SBC) (sinks: 1, sources: 0, priority: 0, available: yes) headset-head-unit-cvsd: Headset Head Unit (HSP/HFP, codec CVSD) (sinks: 1, sources: 1, priority: 0, available: yes)

现在看到A2DP和HSP/HFP都支持了，现在移步到系统Settings或使用PulseAudio Volume Control工具去配置蓝牙耳机的profile为HSP/HFP，即可使用蓝牙耳机的mic功能。

【本文地址】

ubuntu18.04 PulseAudio蓝牙耳机开启mic的解决办法

ubuntu18.04 PulseAudio蓝牙耳机开启mic的解决办法

今日新闻

推荐新闻