如何在不使用pyglet将音频流保存到文件的情况下播放音频流? [英] How can I play audio stream without saving it into the file with pyglet?

问题描述

现在我有以下库:请求， pyglet ， pyaudio

Now I have these libraries: requests, pyglet, pyaudio

如何使用例如来自此网站的音频流来播放音频流而没有将其保存到文件中(使用缓冲)?

How can I play an audio stream using ones, for example, from this site without saving it into the file(using buffering)?

此库的文档中关于StreamingSource类的信息令人困惑

There is a confusing information in documentation of this library about a StreamingSource class

当我在StreamingSource对象(source.get_audio_data(DATA))中以字节为单位推送信息，然后将其推送到Player(pyglet.media.Player())中时，它将引发异常，即StreamingSource没有属性持续时间

When I push the information in bytes in StreamingSource object(source.get_audio_data(DATA)) and after that I push this one into a Player(pyglet.media.Player()) it throws an exception, that says that the StreamingSource hasn't attribute duration

代码:

import pyglet, requests

req = requests.get('http://ic7.101.ru:8000/c15_3', stream=True)

player = pyglet.media.Player()

source = pyglet.media.StreamingSource()

CHUNK = 1024

for num, chunk in enumerate(req.iter_content(CHUNK)):
    if num == 1000:
        break
    source.get_audio_data(chunk)
    if num == 100:
        player.queue(source)
        player.play()
        pyglet.app.run()
pyglet.clock.schedule_once(lambda dt: pyglet.app.exit(), source.duration)

跟踪:

Traceback (most recent call last):
  File "/home/user/.PyCharmCE2017.1/config/scratches/scratch.py", line 16, in <module>
    player.queue(source)
  File "/usr/local/lib/python3.5/dist-packages/pyglet/media/__init__.py", line 978, in queue
    group.queue(source)
  File "/usr/local/lib/python3.5/dist-packages/pyglet/media/__init__.py", line 698, in queue
    self.duration += source.duration
TypeError: unsupported operand type(s) for +=: 'float' and 'NoneType'

推荐答案

如果只想从URL播放文件(音频/视频)而不保存，则可以按以下方式使用vlc.
vlc的详细信息在此处

If you just want to play a file (audio/video) from a url without saving, you can use vlc as below.
Details on vlc are here

您可以将

pip install python-vlc

源代码

import vlc

url = 'http://ic7.101.ru:8000/c15_3'
#define VLC instance
instance = vlc.Instance('--input-repeat=-1', '--fullscreen')

#Define VLC player
player=instance.media_player_new()

#Define VLC media
media=instance.media_new(url)

#Set player media
player.set_media(media)

#Play the media
player.play()

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