关于Python使用playsound模块播放音频文件的编码问题UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position
由于项目的需要，需要播放声音。做过一些尝试，最简单的os.system(file)，播放，出现错误提示一串乱码。
之后改成playsound尝试，刚开始几次效果不错。能直接播放，代码简单而优雅。之后出现的问题就让我悲剧加尴尬了。直接上我的代码和错误提示吧。
测试代码
# -*- coding: utf-8 -*-
# @Author: Administrator
# @Date: 2020-02-28 19:30:41
# @Last Modified by: Administrator
# @Last Modified time: 2020-02-28 19:31:26
from playsound import playsound
playsound('chuku.wav')
错误提示
Traceback (most recent call last):
File "sound.py", line 8, in
playsound('chuku.wav')
File "D:\Program Files\Python38\lib\site-packages\playsound.py", line 35, in _playsoundWin
winCommand('open "' + sound + '" alias', alias)
File "D:\Program Files\Python38\lib\site-packages\playsound.py", line 30, in winCommand
'\n ' + errorBuffer.value.decode())
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 0: invalid continuation byte
***Repl Closed***
错误提示
UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xce in position 0: invalid continuation byte
出了问题得解决呀，所以第一时间使用搜索引擎来辅助我解决问题，搜遍百度，竟没有一个这种先例。这时有点失落了。
根据系统的错误定位，我们来看看源码是什么情况吧。
def winCommand(*command):
buf = c_buffer(255)
command = ' '.join(command).encode(getfilesystemencoding())
errorCode = int(windll.winmm.mciSendStringA(command, buf, 254, 0))
if errorCode:
errorBuffer = c_buffer(255)
windll.winmm.mciGetErrorStringA(errorCode, errorBuffer, 254)
exceptionMessage = ('\n Error ' + str(errorCode) + ' for command:'
'\n ' + command.decode() +
'\n ' + errorBuffer.value.decode())
raise PlaysoundException(exceptionMessage)
return buf.value
winCommand这个函数出错了
其中，
errorCode = int(windll.winmm.mciSendStringA(command, buf, 254, 0))，这一句代码出错了。抱歉，我看不懂是什么原因，还望大神来帮忙看看
最后插入全部的playsound代码，供各位大神分析，谢谢大家了。
class PlaysoundException(Exception):
pass
def _playsoundWin(sound, block = True):
'''
Utilizes windll.winmm. Tested and known to work with MP3 and WAVE on
Windows 7 with Python 2.7. Probably works with more file formats.
Probably works on Windows XP thru Windows 10. Probably works with all
versions of Python.
Inspired by (but not copied from) Michael Gundlach 's mp3play:
https://github.com/michaelgundlach/mp3play
I never would have tried using windll.winmm without seeing his code.
'''
from ctypes import c_buffer, windll
from random import random
from time import sleep
from sys import getfilesystemencoding
def winCommand(*command):
buf = c_buffer(255)
command = ' '.join(command).encode(getfilesystemencoding())
errorCode = int(windll.winmm.mciSendStringA(command, buf, 254, 0))
if errorCode:
errorBuffer = c_buffer(255)
windll.winmm.mciGetErrorStringA(errorCode, errorBuffer, 254)
exceptionMessage = ('\n Error ' + str(errorCode) + ' for command:'
'\n ' + command.decode() +
'\n ' + errorBuffer.value.decode())
raise PlaysoundException(exceptionMessage)
return buf.value
alias = 'playsound_' + str(random())
winCommand('open "' + sound + '" alias', alias)
winCommand('set', alias, 'time format milliseconds')
durationInMS = winCommand('status', alias, 'length')
winCommand('play', alias, 'from 0 to', durationInMS.decode())
if block:
sleep(float(durationInMS) / 1000.0)
def _playsoundOSX(sound, block = True):
'''
Utilizes AppKit.NSSound. Tested and known to work with MP3 and WAVE on
OS X 10.11 with Python 2.7. Probably works with anything QuickTime supports.
Probably works on OS X 10.5 and newer. Probably works with all versions of
Python.
Inspired by (but not copied from) Aaron's Stack Overflow answer here:
http://stackoverflow.com/a/34568298/901641
I never would have tried using AppKit.NSSound without seeing his code.
'''
from AppKit import NSSound
from Foundation import NSURL
from time import sleep
if '://' not in sound:
if not sound.startswith('/'):
from os import getcwd
sound = getcwd() + '/' + sound
sound = 'file://' + sound
url = NSURL.URLWithString_(sound)
nssound = NSSound.alloc().initWithContentsOfURL_byReference_(url, True)
if not nssound:
raise IOError('Unable to load sound named: ' + sound)
nssound.play()
if block:
sleep(nssound.duration())
def _playsoundNix(sound, block=True):
"""Play a sound using GStreamer.
Inspired by this:
https://gstreamer.freedesktop.org/documentation/tutorials/playback/playbin-usage.html
"""
if not block:
raise NotImplementedError(
"block=False cannot be used on this platform yet")
# pathname2url escapes non-URL-safe characters
import os
try:
from urllib.request import pathname2url
except ImportError:
# python 2
from urllib import pathname2url
import gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst
Gst.init(None)
playbin = Gst.ElementFactory.make('playbin', 'playbin')
if sound.startswith(('http://', 'https://')):
playbin.props.uri = sound
else:
playbin.props.uri = 'file://' + pathname2url(os.path.abspath(sound))
set_result = playbin.set_state(Gst.State.PLAYING)
if set_result != Gst.StateChangeReturn.ASYNC:
raise PlaysoundException(
"playbin.set_state returned " + repr(set_result))
# FIXME: use some other bus method than poll() with block=False
# https://lazka.github.io/pgi-docs/#Gst-1.0/classes/Bus.html
bus = playbin.get_bus()
bus.poll(Gst.MessageType.EOS, Gst.CLOCK_TIME_NONE)
playbin.set_state(Gst.State.NULL)
from platform import system
system = system()
if system == 'Windows':
playsound = _playsoundWin
elif system == 'Darwin':
playsound = _playsoundOSX
else:
playsound = _playsoundNix
del system
作者：狼独舞
