注册
登录
| 关键词： nbsp self player list startswith print PLAY return index message |
按照同事的话说，我是一个十足的命令控。 利用最近项目通宵发布的空闲时间中，写了一个命令行下的音乐播放器，以满足我在linux命令下的需求。 播放器利用技术： Python+GST（http://gstreamer.freedesktop.org/modules/gst-python.html）+Console解析 播放器自持操作： 1. 播放 2. 下一首 3. 上一首 4. 暂停 5. 查看播放列表信息 6. 查看当前播放信息 7. 停止（退出） 1 #!/usr/bin/env python 2 3 import gst 4 import gobject 5 import sys 6 #to avoid eclipse'warning 7 eval('gobject.threads_init()') 8 from threading import Thread 9 10 class AudioPlayer: 11 12 EVENT_PLAY_NEW = 1 13 14 def __init__(self, advisor): 15 self.main = gobject.MainLoop() 16 self.player = gst.element_factory_make('playbin', 'player') 17 self.index = -1 18 self.list = None 19 self.advisor = advisor 20 21 bus = self.player.get_bus() 22 bus.add_signal_watch() 23 bus.connect('message', self.on_message) 24 25 Thread(target=self.main.run).start() 26 27 def add_list(self , list=[]): 28 if list is None: 29 list = [] 30 self.list = [(i, l.strip(), l[l.rfind('/') + 1:]) for (i, l) in enumerate(list)] 31 32 def play(self, index=None): 33 #play specified tracks 34 if 0 <= index < len(self.list): 35 self.index = index 36 self.player.set_state(gst.STATE_NULL) 37 self.player.set_property('uri', self.list[index][1]) 38 self.player.set_state(gst.STATE_PLAYING) 39 if self.advisor: 40 self.advisor.on_message(AudioPlayer.EVENT_PLAY_NEW, (self.index, self.get_title())) 41 #resume playing 42 if index is None: 43 if self.index > -1: 44 self.player.set_state(gst.STATE_PLAYING) 45 46 def pause(self): 47 self.player.set_state(gst.STATE_PAUSED) 48 49 def stop(self): 50 self.player.set_state(gst.STATE_NULL) 51 self.main.quit() 52 53 def get_title(self): 54 if self.index == -1 or len(self.list) == 0: 55 return None 56 return self.list[self.index][2] 57 58 def get_previous(self): 59 if self.index == -1 or len(self.list) == 0: 60 return - 1 61 if self.index == 0: 62 return 0 63 return self.index - 1 64 65 def get_next(self): 66 if len(self.list) == 0: 67 return - 1 68 if self.index + 1 == len(self.list): 69 return 0 70 return self.index + 1 71 72 def on_message(self, bus, message): 73 t = message.type 74 if t == gst.MESSAGE_ERROR: 75 self.play(self.get_next()) 76 elif t == gst.MESSAGE_EOS: 77 self.play(self.get_next()) 78 79 class Console: 80 81 def __init__(self, list): 82 self.player = AudioPlayer(self) 83 self.player.add_list(list) 84 self.player.play(0) 85 86 Thread(target=self.run).start() 87 88 def run(self): 89 while(True): 90 self.on_cmd(raw_input()) 91 92 def on_cmd(self, cmd): 93 if cmd is None: 94 return 95 if cmd.startswith('play'): 96 self.player.play() 97 elif cmd.startswith('next'): 98 self.player.play(self.player.get_next()) 99 elif cmd.startswith('previous'):100 self.player.play(self.player.get_previous())101 elif cmd.startswith('pause'):102 self.player.pause()103 elif cmd.startswith('list'):104 print '====================================='105 for info in self.player.list:106 print '%s. %s' % (info[0], info[2])107 print '====================================='108 elif cmd.startswith('info'):109 print '====================================='110 print '%s. %s' % (self.player.index, self.player.get_title())111 print '====================================='112 elif cmd.startswith('stop'):113 self.player.stop()114 sys.exit(0)115 elif cmd.startswith('dump'):116 from meliae import scanner117 scanner.dump_all_objects('./dump.txt')118 else:119 print '''=====================================120 Usage:121 play122 next123 previous124 pause125 list126 info127 stop128 dump129 ====================================='''130 131 def on_message(self, event, info):132 if event == AudioPlayer.EVENT_PLAY_NEW:133 print '====================================='134 print 'Tracks: %s.%s' % (info[0], info[1])135 print '====================================='136 137 138 if len(sys.argv) != 2:139 print 'player.py mp3.list'140 sys.exit(-1)141 list = [l.strip() for l in open(sys.argv[1]).readlines() if l.strip() != '']142 Console(list) |
|
声明：文章版权归原作者所有 部分文章转自互联网 如有侵权请联系
[邮箱地址] 删除
|
