/lib-python/2.7/plat-irix6/readcd.py
Python | 247 lines | 225 code | 18 blank | 4 comment | 80 complexity | b5f596e4585433ee8c0c5a38e0c677f5 MD5 | raw file
- # Class interface to the CD module.
- from warnings import warnpy3k
- warnpy3k("the readcd module has been removed in Python 3.0", stacklevel=2)
- del warnpy3k
- import cd, CD
- class Error(Exception):
- pass
- class _Stop(Exception):
- pass
- def _doatime(self, cb_type, data):
- if ((data[0] * 60) + data[1]) * 75 + data[2] > self.end:
- ## print 'done with list entry', repr(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', repr(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
- 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)
- try:
- while 1:
- if not self.playing:
- if self.listindex >= len(self.list):
- return
- start, end = self.list[self.listindex]
- 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
- finally:
- self.playing = 0