1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
#!/usr/bin/env python
'''
ogg123.py
By Andrew Chatham
Based on ogg123.c by Keneth Arnold.
Used to demonstrate the ogg and ao Python bindings. If you just want
to cut to the chase and see how to use the modules, the actual work is
in Player.start
Run "ogg123.py --help" for instructions on usage.
'''
import sys
import string
import re
import os
import whrandom
import time
import ogg.vorbis
version = 'ogg123.py, version 0.0.1'
verbose = 1
usage_str = '''
Usage: ogg123.py [options] files
--help This output
--version Version information
--device=<device> Select the output device for ao module.
--device-option=<options> Give options to the ao module (unimplemented)
--module=[ao, lad] Select the ao or linuxaudiodev module for output
--verbose Give verbose output
--quiet Shut up
--shuffle Randomize the listed files before playing
'''
class Player:
'''A simple wrapper around an Ao object which provides an interface
to play a specified file.'''
def play(self, name):
'''Play the given file on the current device.'''
if os.path.isfile(name):
vf = ogg.vorbis.VorbisFile(name)
else:
raise ValueError, "Play takes a filename."
self.start(vf)
def start(self, vf):
'''Actually start playing the given VorbisFile.'''
if verbose:
vc = vf.comment()
vi = vf.info()
print 'Bitstream is %s channel, %s rate' % (vi.channels, vi.rate)
# If any of these comments show up, print 'key: val' where
recognized_comments = ('Artist', 'Album', 'Title', 'Version',
'Organization', 'Genre', 'Description',
'Date', 'Location', 'Copyright', 'Vendor')
comment_dict = {}
for com in recognized_comments:
comment_dict[string.upper(com)] = '%s: %%s' % com
known_keys = comment_dict.keys()
for key, val in vc.items():
if key in known_keys:
print comment_dict[key] % val
else:
print "Unknown comment: %s" % val
print
# Here is the little bit that actually plays the file.
# Read takes the number of bytes to read and returns a tuple
# containing the buffer, the number of bytes read, and I have
# no idea what the bit thing is for! Then write the buffer contents
# to the device.
while 1:
(buff, bytes, bit) = vf.read(4096)
if verbose == 2:
print "Read %s bytes" % bytes
if bytes == 0:
break
self.write(buff, bytes)
class AOPlayer(Player):
'''A player which uses the ao module.'''
def __init__(self, id=None):
import ao
if id is None:
id = ao.driver_id('esd')
self.dev = ao.AudioDevice(id)
def write(self, buff, bytes):
self.dev.play(buff, bytes)
class LADPlayer(Player):
'''A player which uses the linuxaudiodev module. I have little
idea how to use this thing. At least it plays.'''
def __init__(self):
import linuxaudiodev
self.lad = linuxaudiodev
self.dev = linuxaudiodev.open('w')
self.dev.setparameters(44100, 16, 2, linuxaudiodev.AFMT_S16_NE)
def write(self, buff, bytes):
'''The write function. I'm really guessing as to whether
I'm using it correctly or not, but this seems to work, so until I
hear otherwise I'll go with this. Please educate me!'''
while self.dev.obuffree() < bytes:
time.sleep(0.2)
self.dev.write(buff[:bytes])
def usage(msg=None):
if msg:
print msg
print
print version
print usage_str
def main():
global verbose
import getopt
args = sys.argv[1:]
opts = 'hVd:om:vqz'
long_opts = ('help', 'version', 'device=',
'device-option=', 'module=', 'verbose',
'quiet', 'shuffle')
try:
optlist, args = getopt.getopt(args, opts, long_opts)
except getopt.error, m:
print m
print
usage()
sys.exit(2)
driver_id = None
device_options = None
modchoice = 'ao'
choices = {'ao': AOPlayer,
'lad': LADPlayer}
for arg, val in optlist:
if arg == '-h' or arg == '--help':
usage()
sys.exit(2)
elif arg == '-V' or arg == '--version':
print version
sys.exit(0)
elif arg == '-d' or arg == '--device':
try:
driver_id = ao_get_driver_id(val)
except aoError:
sys.stderr.write('No such device %s\n' % val)
sys.exit(1)
elif arg == '-o' or arg == '--device-option':
raise NotImplementedError
elif arg == '-m' or arg == '--module':
if choices.has_key(val):
modchoice = val
else:
usage("%s is not a valid module choice" % val)
sys.exit(2)
elif arg == '-v' or arg == '--verbose':
verbose = 2
elif arg == '-q' or arg == '--quiet':
verbose = 0
elif arg == '-z' or arg == '--shuffle':
ri = whrandom.randrange
for pos in range(len(args)):
newpos = ri(pos, len(args))
tmp = args[pos]
args[pos] = args[newpos]
args[newpos] = tmp
if not args: #no files to play
usage()
sys.exit(0)
myplayer = choices[modchoice]() # Either AOPlayer or LADPlayer
if verbose:
print "Module choice: %s" % modchoice
for file in args:
if verbose:
print "Playing %s" % file
print
myplayer.play(file)
if __name__ == '__main__':
main()
|
