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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
# Class interface to the CD module.
import cd, CD
Error = 'Readcd.Error'
_Stop = 'Readcd.Stop'
def _doatime(self, cb_type, data):
if ((data[0] * 60) + data[1]) * 75 + data[2] > self.end:
## print 'done with list entry',`self.listindex`
raise _Stop
func, arg = self.callbacks[cb_type]
if func:
func(arg, cb_type, data)
def _dopnum(self, cb_type, data):
if data > self.end:
## print 'done with list entry',`self.listindex`
raise _Stop
func, arg = self.callbacks[cb_type]
if func:
func(arg, cb_type, data)
class Readcd():
def init(self, *arg):
if len(arg) == 0:
self.player = cd.open()
elif len(arg) == 1:
self.player = cd.open(arg[0])
elif len(arg) == 2:
self.player = cd.open(arg[0], arg[1])
else:
raise Error, 'bad init call'
self.list = []
self.callbacks = [(None, None)] * 8
self.parser = cd.createparser()
self.playing = 0
self.end = 0
self.status = None
self.trackinfo = None
return self
def eject(self):
self.player.eject()
self.list = []
self.end = 0
self.listindex = 0
self.status = None
self.trackinfo = None
if self.playing:
## print 'stop playing from eject'
raise _Stop
def pmsf2msf(self, track, min, sec, frame):
if not self.status:
self.cachestatus()
if track < self.status[5] or track > self.status[6]:
raise Error, 'track number out of range'
if not self.trackinfo:
self.cacheinfo()
start, total = self.trackinfo[track]
start = ((start[0] * 60) + start[1]) * 75 + start[2]
total = ((total[0] * 60) + total[1]) * 75 + total[2]
block = ((min * 60) + sec) * 75 + frame
if block > total:
raise Error, 'out of range'
block = start + block
min, block = divmod(block, 75*60)
sec, frame = divmod(block, 75)
return min, sec, frame
def reset(self):
self.list = []
def appendtrack(self, track):
self.appendstretch(track, track)
def appendstretch(self, start, end):
if not self.status:
self.cachestatus()
if not start:
start = 1
if not end:
end = self.status[6]
if type(end) == type(0):
if end < self.status[5] or end > self.status[6]:
raise Error, 'range error'
else:
l = len(end)
if l == 4:
prog, min, sec, frame = end
if prog < self.status[5] or prog > self.status[6]:
raise Error, 'range error'
end = self.pmsf2msf(prog, min, sec, frame)
elif l <> 3:
raise Error, 'syntax error'
if type(start) == type(0):
if start < self.status[5] or start > self.status[6]:
raise Error, 'range error'
if len(self.list) > 0:
s, e = self.list[-1]
if type(e) == type(0):
if start == e+1:
start = s
del self.list[-1]
else:
l = len(start)
if l == 4:
prog, min, sec, frame = start
if prog < self.status[5] or prog > self.status[6]:
raise Error, 'range error'
start = self.pmsf2msf(prog, min, sec, frame)
elif l <> 3:
raise Error, 'syntax error'
self.list.append((start, end))
def settracks(self, list):
self.list = []
for track in list:
self.appendtrack(track)
def setcallback(self, cb_type, func, arg):
if cb_type < 0 or cb_type >= 8:
raise Error, 'type out of range'
self.callbacks[cb_type] = (func, arg)
if self.playing:
start, end = self.list[self.listindex]
if type(end) == type(0):
if cb_type <> CD.PNUM:
self.parser.setcallback(cb_type, func, arg)
else:
if cb_type <> CD.ATIME:
self.parser.setcallback(cb_type, func, arg)
def removecallback(self, cb_type):
if cb_type < 0 or cb_type >= 8:
raise Error, 'type out of range'
self.callbacks[cb_type] = (None, None)
if self.playing:
start, end = self.list[self.listindex]
if type(end) == type(0):
if cb_type <> CD.PNUM:
self.parser.removecallback(cb_type)
else:
if cb_type <> CD.ATIME:
self.parser.removecallback(cb_type)
def gettrackinfo(self, *arg):
if not self.status:
self.cachestatus()
if not self.trackinfo:
self.cacheinfo()
if len(arg) == 0:
return self.trackinfo[self.status[5]:self.status[6]+1]
result = []
for i in arg:
if i < self.status[5] or i > self.status[6]:
raise Error, 'range error'
result.append(self.trackinfo[i])
return result
def cacheinfo(self):
if not self.status:
self.cachestatus()
self.trackinfo = []
for i in range(self.status[5]):
self.trackinfo.append(None)
for i in range(self.status[5], self.status[6]+1):
self.trackinfo.append(self.player.gettrackinfo(i))
def cachestatus(self):
self.status = self.player.getstatus()
if self.status[0] == CD.NODISC:
self.status = None
raise Error, 'no disc in player'
def getstatus(self):
return self.player.getstatus()
def play(self):
if not self.status:
self.cachestatus()
size = self.player.bestreadsize()
self.listindex = 0
self.playing = 0
for i in range(8):
func, arg = self.callbacks[i]
if func:
self.parser.setcallback(i, func, arg)
else:
self.parser.removecallback(i)
if len(self.list) == 0:
for i in range(self.status[5], self.status[6]+1):
self.appendtrack(i)
while 1:
if not self.playing:
if self.listindex >= len(self.list):
return
start, end = self.list[self.listindex]
## print 'starting with',`(start, end)`
if type(start) == type(0):
dummy = self.player.seektrack(start)
else:
min, sec, frame = start
dummy = self.player.seek(min, sec, frame)
if type(end) == type(0):
self.parser.setcallback(CD.PNUM, _dopnum, self)
self.end = end
func, arg = self.callbacks[CD.ATIME]
if func:
self.parser.setcallback(CD.ATIME, func, arg)
else:
self.parser.removecallback(CD.ATIME)
else:
min, sec, frame = end
self.parser.setcallback(CD.ATIME, _doatime, self)
self.end = (min * 60 + sec) * 75 + frame
func, arg = self.callbacks[CD.PNUM]
if func:
self.parser.setcallback(CD.PNUM, func, arg)
else:
self.parser.removecallback(CD.PNUM)
self.playing = 1
data = self.player.readda(size)
if data == '':
self.playing = 0
self.listindex = self.listindex + 1
continue
try:
self.parser.parseframe(data)
except _Stop:
self.playing = 0
self.listindex = self.listindex + 1
|
