Raspberry Pi 树莓派安装 pyaudio

使用树莓派安装 pyaudio 播放 wav 时交叉编译出错，使用 pip 安装步骤如下

• 运行环境

  • Python 3.7.3
  • Raspbian buster

• 安装步骤

  1. 安装 portaudio.dev

     sudo apt install portaudio.dev

  2. 安装依赖库

     sudo apt install libportaudio0 libportaudio2 libportaudiocpp0 portaudio19-dev

  3. 安装 pyaudio

     sudo pip3 install pyaudio

这时交叉编译已经通过说明已经成功安装了 pyaudio，但可能依旧无法播放 wav，继续执行一下步骤

安装 pulseaudio

sudo apt install pulseaudio
pulseaudio --start

此时运行即可播放声音

import pyaudio
from io import BytesIO


def player_wav(wav_bytes):
    chunk = 1024
    f = wave.open(BytesIO(wav_bytes), "rb")
    p = pyaudio.PyAudio()
    stream = p.open(format=p.get_format_from_width(f.getsampwidth()),
                    channels=f.getnchannels(),
                    rate=f.getframerate(),
                    output=True)
    data = f.readframes(chunk)
    while data != b'':
        stream.write(data)
        data = f.readframes(chunk)
    stream.stop_stream()
    stream.close()
    p.terminate()