python-3.x - python脚本使用vlc从RaspberryPi播放音频
问题描述
我很想每天在同一时间获取在我的 RaspberryPi 上运行的歌曲列表。为此,我编写了一个 python 脚本并计划将其作为 cronjob 运行。
我写的脚本如下。
import vlc
import glob
import time
base_folder = '/home/pi/Music/'
def play_song(song):
player = vlc.MediaPlayer(song)
player.play()
def add_media(player, media_list, playlist):
for song in playlist:
print('sing " {0}'.format(song))
media = player.media_new(song)
media_list.add_media(media)
media_player.set_media_list(media_list)
playlist = glob.glob(base_folder + "/" + "*.mp3")
media_player = vlc.MediaListPlayer()
player = vlc.Instance()
media_list = vlc.MediaList()
add_media(player, media_list, playlist)
我对上述程序有一个问题。
当我运行作为 RaspberryPi 的默认 python IDE 的 python 程序时Thonny
,它可以工作。(即它播放歌曲)。但是,当我从命令行运行它时
python3 audioplayer.py
它退出而不播放歌曲。如何让它在从命令行运行时播放歌曲。
解决方案
您似乎在发布的脚本中缺少一些代码,即play
命令。
我怀疑 IDE 将主循环保持为打开状态vlc
,因此它可以工作。
但是,从命令行来看,没有循环,这就是您所缺少的。
尝试以下操作:
import vlc
import glob
import time
base_folder = '/home/rolf'
# vlc State 0: Nowt, 1 Opening, 2 Buffering, 3 Playing, 4 Paused, 5 Stopped, 6 Ended, 7 Error
playing = set([1,2,3,4])
def add_media(inst, media_list, playlist):
for song in playlist:
print('Loading: - {0}'.format(song))
media = inst.media_new(song)
media_list.add_media(media)
playlist = glob.glob(base_folder + "/" + "*.mp3")
playlist = sorted(playlist)
#playlist = ['./2005.mp3', './vp1.mp3']
media_player = vlc.MediaListPlayer()
inst = vlc.Instance('--no-xlib --quiet ')
media_list = vlc.MediaList()
add_media(inst, media_list, playlist)
media_player.set_media_list(media_list)
media_player.play()
time.sleep(0.1)
current = ""
idx = 1
player = media_player.get_media_player()
while True:
state = player.get_state()
if state.value not in playing:
break
title = player.get_media().get_mrl()
if title != current:
print("\nPlaying - {0}\t{1} of {2}".format(str(title), idx, len(playlist)))
current = title
idx += 1
time.sleep(1.0)
print("\nPlaylist Finished")
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