if len(self._markers) == 0:
return None
return self._markers
-
+
def tell(self):
return self._nframeswritten
Instead of
- import dbm
- d = dbm.open(file, 'w', 0666)
+ import dbm
+ d = dbm.open(file, 'w', 0666)
use
- import anydbm
- d = anydbm.open(file, 'w')
+ import anydbm
+ d = anydbm.open(file, 'w')
The returned object is a dbhash, gdbm, dbm or dumbdbm object,
dependent on the type of database being opened (determined by whichdb
It has the following interface (key and data are strings):
- d[key] = data # store data at key (may override data at
- # existing key)
- data = d[key] # retrieve data at key (raise KeyError if no
- # such key)
- del d[key] # delete data stored at key (raises KeyError
- # if no such key)
- flag = d.has_key(key) # true if the key exists
- list = d.keys() # return a list of all existing keys (slow!)
+ d[key] = data # store data at key (may override data at
+ # existing key)
+ data = d[key] # retrieve data at key (raise KeyError if no
+ # such key)
+ del d[key] # delete data stored at key (raises KeyError
+ # if no such key)
+ flag = d.has_key(key) # true if the key exists
+ list = d.keys() # return a list of all existing keys (slow!)
Future versions may change the order in which implementations are
tested for existence, add interfaces to other dbm-like
"""
try:
- class error(Exception):
- pass
+ class error(Exception):
+ pass
except:
- error = "anydbm.error"
+ error = "anydbm.error"
_names = ['dbhash', 'gdbm', 'dbm', 'dumbdbm']
_errors = [error]
_defaultmod = None
for _name in _names:
- try:
- _mod = __import__(_name)
- except ImportError:
- continue
- if not _defaultmod:
- _defaultmod = _mod
- _errors.append(_mod.error)
+ try:
+ _mod = __import__(_name)
+ except ImportError:
+ continue
+ if not _defaultmod:
+ _defaultmod = _mod
+ _errors.append(_mod.error)
if not _defaultmod:
- raise ImportError, "no dbm clone found; tried %s" % _names
+ raise ImportError, "no dbm clone found; tried %s" % _names
error = tuple(_errors)
def open(file, flag = 'r', mode = 0666):
- # guess the type of an existing database
- from whichdb import whichdb
- result=whichdb(file)
- if result is None:
- # db doesn't exist
- if 'c' in flag or 'n' in flag:
- # file doesn't exist and the new
- # flag was used so use default type
- mod = _defaultmod
- else:
- raise error, "need 'c' or 'n' flag to open new db"
- elif result == "":
- # db type cannot be determined
- raise error, "db type could not be determined"
- else:
- mod = __import__(result)
- return mod.open(file, flag, mode)
+ # guess the type of an existing database
+ from whichdb import whichdb
+ result=whichdb(file)
+ if result is None:
+ # db doesn't exist
+ if 'c' in flag or 'n' in flag:
+ # file doesn't exist and the new
+ # flag was used so use default type
+ mod = _defaultmod
+ else:
+ raise error, "need 'c' or 'n' flag to open new db"
+ elif result == "":
+ # db type cannot be determined
+ raise error, "db type could not be determined"
+ else:
+ mod = __import__(result)
+ return mod.open(file, flag, mode)
# -*- Mode: Python; tab-width: 4 -*-
-# Id: asynchat.py,v 2.25 1999/11/18 11:01:08 rushing Exp
-# Author: Sam Rushing <rushing@nightmare.com>
+# Id: asynchat.py,v 2.25 1999/11/18 11:01:08 rushing Exp
+# Author: Sam Rushing <rushing@nightmare.com>
# ======================================================================
# Copyright 1996 by Sam Rushing
-#
+#
# All Rights Reserved
-#
+#
# Permission to use, copy, modify, and distribute this software and
# its documentation for any purpose and without fee is hereby
# granted, provided that the above copyright notice appear in all
# Rushing not be used in advertising or publicity pertaining to
# distribution of the software without specific, written prior
# permission.
-#
+#
# SAM RUSHING DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
# NO EVENT SHALL SAM RUSHING BE LIABLE FOR ANY SPECIAL, INDIRECT OR
import string
class async_chat (asyncore.dispatcher):
- """This is an abstract class. You must derive from this class, and add
- the two methods collect_incoming_data() and found_terminator()"""
-
- # these are overridable defaults
-
- ac_in_buffer_size = 4096
- ac_out_buffer_size = 4096
-
- def __init__ (self, conn=None):
- self.ac_in_buffer = ''
- self.ac_out_buffer = ''
- self.producer_fifo = fifo()
- asyncore.dispatcher.__init__ (self, conn)
-
- def set_terminator (self, term):
- "Set the input delimiter. Can be a fixed string of any length, an integer, or None"
- self.terminator = term
-
- def get_terminator (self):
- return self.terminator
-
- # grab some more data from the socket,
- # throw it to the collector method,
- # check for the terminator,
- # if found, transition to the next state.
-
- def handle_read (self):
-
- try:
- data = self.recv (self.ac_in_buffer_size)
- except socket.error, why:
- self.handle_error()
- return
-
- self.ac_in_buffer = self.ac_in_buffer + data
-
- # Continue to search for self.terminator in self.ac_in_buffer,
- # while calling self.collect_incoming_data. The while loop
- # is necessary because we might read several data+terminator
- # combos with a single recv(1024).
-
- while self.ac_in_buffer:
- lb = len(self.ac_in_buffer)
- terminator = self.get_terminator()
- if terminator is None:
- # no terminator, collect it all
- self.collect_incoming_data (self.ac_in_buffer)
- self.ac_in_buffer = ''
- elif type(terminator) == type(0):
- # numeric terminator
- n = terminator
- if lb < n:
- self.collect_incoming_data (self.ac_in_buffer)
- self.ac_in_buffer = ''
- self.terminator = self.terminator - lb
- else:
- self.collect_incoming_data (self.ac_in_buffer[:n])
- self.ac_in_buffer = self.ac_in_buffer[n:]
- self.terminator = 0
- self.found_terminator()
- else:
- # 3 cases:
- # 1) end of buffer matches terminator exactly:
- # collect data, transition
- # 2) end of buffer matches some prefix:
- # collect data to the prefix
- # 3) end of buffer does not match any prefix:
- # collect data
- terminator_len = len(terminator)
- index = string.find (self.ac_in_buffer, terminator)
- if index != -1:
- # we found the terminator
- if index > 0:
- # don't bother reporting the empty string (source of subtle bugs)
- self.collect_incoming_data (self.ac_in_buffer[:index])
- self.ac_in_buffer = self.ac_in_buffer[index+terminator_len:]
- # This does the Right Thing if the terminator is changed here.
- self.found_terminator()
- else:
- # check for a prefix of the terminator
- index = find_prefix_at_end (self.ac_in_buffer, terminator)
- if index:
- if index != lb:
- # we found a prefix, collect up to the prefix
- self.collect_incoming_data (self.ac_in_buffer[:-index])
- self.ac_in_buffer = self.ac_in_buffer[-index:]
- break
- else:
- # no prefix, collect it all
- self.collect_incoming_data (self.ac_in_buffer)
- self.ac_in_buffer = ''
-
- def handle_write (self):
- self.initiate_send ()
-
- def handle_close (self):
- self.close()
-
- def push (self, data):
- self.producer_fifo.push (simple_producer (data))
- self.initiate_send()
-
- def push_with_producer (self, producer):
- self.producer_fifo.push (producer)
- self.initiate_send()
-
- def readable (self):
- "predicate for inclusion in the readable for select()"
- return (len(self.ac_in_buffer) <= self.ac_in_buffer_size)
-
- def writable (self):
- "predicate for inclusion in the writable for select()"
- # return len(self.ac_out_buffer) or len(self.producer_fifo) or (not self.connected)
- # this is about twice as fast, though not as clear.
- return not (
- (self.ac_out_buffer is '') and
- self.producer_fifo.is_empty() and
- self.connected
- )
-
- def close_when_done (self):
- "automatically close this channel once the outgoing queue is empty"
- self.producer_fifo.push (None)
-
- # refill the outgoing buffer by calling the more() method
- # of the first producer in the queue
- def refill_buffer (self):
- _string_type = type('')
- while 1:
- if len(self.producer_fifo):
- p = self.producer_fifo.first()
- # a 'None' in the producer fifo is a sentinel,
- # telling us to close the channel.
- if p is None:
- if not self.ac_out_buffer:
- self.producer_fifo.pop()
- self.close()
- return
- elif type(p) is _string_type:
- self.producer_fifo.pop()
- self.ac_out_buffer = self.ac_out_buffer + p
- return
- data = p.more()
- if data:
- self.ac_out_buffer = self.ac_out_buffer + data
- return
- else:
- self.producer_fifo.pop()
- else:
- return
-
- def initiate_send (self):
- obs = self.ac_out_buffer_size
- # try to refill the buffer
- if (len (self.ac_out_buffer) < obs):
- self.refill_buffer()
-
- if self.ac_out_buffer and self.connected:
- # try to send the buffer
- try:
- num_sent = self.send (self.ac_out_buffer[:obs])
- if num_sent:
- self.ac_out_buffer = self.ac_out_buffer[num_sent:]
-
- except socket.error, why:
- self.handle_error()
- return
-
- def discard_buffers (self):
- # Emergencies only!
- self.ac_in_buffer = ''
- self.ac_out_buffer = ''
- while self.producer_fifo:
- self.producer_fifo.pop()
+ """This is an abstract class. You must derive from this class, and add
+ the two methods collect_incoming_data() and found_terminator()"""
+
+ # these are overridable defaults
+
+ ac_in_buffer_size = 4096
+ ac_out_buffer_size = 4096
+
+ def __init__ (self, conn=None):
+ self.ac_in_buffer = ''
+ self.ac_out_buffer = ''
+ self.producer_fifo = fifo()
+ asyncore.dispatcher.__init__ (self, conn)
+
+ def set_terminator (self, term):
+ "Set the input delimiter. Can be a fixed string of any length, an integer, or None"
+ self.terminator = term
+
+ def get_terminator (self):
+ return self.terminator
+
+ # grab some more data from the socket,
+ # throw it to the collector method,
+ # check for the terminator,
+ # if found, transition to the next state.
+
+ def handle_read (self):
+
+ try:
+ data = self.recv (self.ac_in_buffer_size)
+ except socket.error, why:
+ self.handle_error()
+ return
+
+ self.ac_in_buffer = self.ac_in_buffer + data
+
+ # Continue to search for self.terminator in self.ac_in_buffer,
+ # while calling self.collect_incoming_data. The while loop
+ # is necessary because we might read several data+terminator
+ # combos with a single recv(1024).
+
+ while self.ac_in_buffer:
+ lb = len(self.ac_in_buffer)
+ terminator = self.get_terminator()
+ if terminator is None:
+ # no terminator, collect it all
+ self.collect_incoming_data (self.ac_in_buffer)
+ self.ac_in_buffer = ''
+ elif type(terminator) == type(0):
+ # numeric terminator
+ n = terminator
+ if lb < n:
+ self.collect_incoming_data (self.ac_in_buffer)
+ self.ac_in_buffer = ''
+ self.terminator = self.terminator - lb
+ else:
+ self.collect_incoming_data (self.ac_in_buffer[:n])
+ self.ac_in_buffer = self.ac_in_buffer[n:]
+ self.terminator = 0
+ self.found_terminator()
+ else:
+ # 3 cases:
+ # 1) end of buffer matches terminator exactly:
+ # collect data, transition
+ # 2) end of buffer matches some prefix:
+ # collect data to the prefix
+ # 3) end of buffer does not match any prefix:
+ # collect data
+ terminator_len = len(terminator)
+ index = string.find (self.ac_in_buffer, terminator)
+ if index != -1:
+ # we found the terminator
+ if index > 0:
+ # don't bother reporting the empty string (source of subtle bugs)
+ self.collect_incoming_data (self.ac_in_buffer[:index])
+ self.ac_in_buffer = self.ac_in_buffer[index+terminator_len:]
+ # This does the Right Thing if the terminator is changed here.
+ self.found_terminator()
+ else:
+ # check for a prefix of the terminator
+ index = find_prefix_at_end (self.ac_in_buffer, terminator)
+ if index:
+ if index != lb:
+ # we found a prefix, collect up to the prefix
+ self.collect_incoming_data (self.ac_in_buffer[:-index])
+ self.ac_in_buffer = self.ac_in_buffer[-index:]
+ break
+ else:
+ # no prefix, collect it all
+ self.collect_incoming_data (self.ac_in_buffer)
+ self.ac_in_buffer = ''
+
+ def handle_write (self):
+ self.initiate_send ()
+
+ def handle_close (self):
+ self.close()
+
+ def push (self, data):
+ self.producer_fifo.push (simple_producer (data))
+ self.initiate_send()
+
+ def push_with_producer (self, producer):
+ self.producer_fifo.push (producer)
+ self.initiate_send()
+
+ def readable (self):
+ "predicate for inclusion in the readable for select()"
+ return (len(self.ac_in_buffer) <= self.ac_in_buffer_size)
+
+ def writable (self):
+ "predicate for inclusion in the writable for select()"
+ # return len(self.ac_out_buffer) or len(self.producer_fifo) or (not self.connected)
+ # this is about twice as fast, though not as clear.
+ return not (
+ (self.ac_out_buffer is '') and
+ self.producer_fifo.is_empty() and
+ self.connected
+ )
+
+ def close_when_done (self):
+ "automatically close this channel once the outgoing queue is empty"
+ self.producer_fifo.push (None)
+
+ # refill the outgoing buffer by calling the more() method
+ # of the first producer in the queue
+ def refill_buffer (self):
+ _string_type = type('')
+ while 1:
+ if len(self.producer_fifo):
+ p = self.producer_fifo.first()
+ # a 'None' in the producer fifo is a sentinel,
+ # telling us to close the channel.
+ if p is None:
+ if not self.ac_out_buffer:
+ self.producer_fifo.pop()
+ self.close()
+ return
+ elif type(p) is _string_type:
+ self.producer_fifo.pop()
+ self.ac_out_buffer = self.ac_out_buffer + p
+ return
+ data = p.more()
+ if data:
+ self.ac_out_buffer = self.ac_out_buffer + data
+ return
+ else:
+ self.producer_fifo.pop()
+ else:
+ return
+
+ def initiate_send (self):
+ obs = self.ac_out_buffer_size
+ # try to refill the buffer
+ if (len (self.ac_out_buffer) < obs):
+ self.refill_buffer()
+
+ if self.ac_out_buffer and self.connected:
+ # try to send the buffer
+ try:
+ num_sent = self.send (self.ac_out_buffer[:obs])
+ if num_sent:
+ self.ac_out_buffer = self.ac_out_buffer[num_sent:]
+
+ except socket.error, why:
+ self.handle_error()
+ return
+
+ def discard_buffers (self):
+ # Emergencies only!
+ self.ac_in_buffer = ''
+ self.ac_out_buffer = ''
+ while self.producer_fifo:
+ self.producer_fifo.pop()
class simple_producer:
- def __init__ (self, data, buffer_size=512):
- self.data = data
- self.buffer_size = buffer_size
+ def __init__ (self, data, buffer_size=512):
+ self.data = data
+ self.buffer_size = buffer_size
- def more (self):
- if len (self.data) > self.buffer_size:
- result = self.data[:self.buffer_size]
- self.data = self.data[self.buffer_size:]
- return result
- else:
- result = self.data
- self.data = ''
- return result
+ def more (self):
+ if len (self.data) > self.buffer_size:
+ result = self.data[:self.buffer_size]
+ self.data = self.data[self.buffer_size:]
+ return result
+ else:
+ result = self.data
+ self.data = ''
+ return result
class fifo:
- def __init__ (self, list=None):
- if not list:
- self.list = []
- else:
- self.list = list
-
- def __len__ (self):
- return len(self.list)
-
- def is_empty (self):
- return self.list == []
-
- def first (self):
- return self.list[0]
-
- def push (self, data):
- self.list.append (data)
-
- def pop (self):
- if self.list:
- result = self.list[0]
- del self.list[0]
- return (1, result)
- else:
- return (0, None)
+ def __init__ (self, list=None):
+ if not list:
+ self.list = []
+ else:
+ self.list = list
+
+ def __len__ (self):
+ return len(self.list)
+
+ def is_empty (self):
+ return self.list == []
+
+ def first (self):
+ return self.list[0]
+
+ def push (self, data):
+ self.list.append (data)
+
+ def pop (self):
+ if self.list:
+ result = self.list[0]
+ del self.list[0]
+ return (1, result)
+ else:
+ return (0, None)
# Given 'haystack', see if any prefix of 'needle' is at its end. This
# assumes an exact match has already been checked. Return the number of
# this could maybe be made faster with a computed regex?
##def find_prefix_at_end (haystack, needle):
-## nl = len(needle)
-## result = 0
-## for i in range (1,nl):
-## if haystack[-(nl-i):] == needle[:(nl-i)]:
-## result = nl-i
-## break
-## return result
+## nl = len(needle)
+## result = 0
+## for i in range (1,nl):
+## if haystack[-(nl-i):] == needle[:(nl-i)]:
+## result = nl-i
+## break
+## return result
# yes, this is about twice as fast, but still seems
# to be negligible CPU. The previous version could do about 290
prefix_cache = {}
def prefix_regex (needle):
- if prefix_cache.has_key (needle):
- return prefix_cache[needle]
- else:
- reg = needle[-1]
- for i in range(1,len(needle)):
- reg = '%c\(%s\)?' % (needle[-(i+1)], reg)
- reg = regex.compile (reg+'$')
- prefix_cache[needle] = reg, len(needle)
- return reg, len(needle)
+ if prefix_cache.has_key (needle):
+ return prefix_cache[needle]
+ else:
+ reg = needle[-1]
+ for i in range(1,len(needle)):
+ reg = '%c\(%s\)?' % (needle[-(i+1)], reg)
+ reg = regex.compile (reg+'$')
+ prefix_cache[needle] = reg, len(needle)
+ return reg, len(needle)
def find_prefix_at_end (haystack, needle):
- reg, length = prefix_regex (needle)
- lh = len(haystack)
- result = reg.search (haystack, max(0,lh-length))
- if result >= 0:
- return (lh - result)
- else:
- return 0
+ reg, length = prefix_regex (needle)
+ lh = len(haystack)
+ result = reg.search (haystack, max(0,lh-length))
+ if result >= 0:
+ return (lh - result)
+ else:
+ return 0
# -*- Mode: Python -*-
-# Id: asyncore.py,v 2.51 2000/09/07 22:29:26 rushing Exp
+# Id: asyncore.py,v 2.51 2000/09/07 22:29:26 rushing Exp
# Author: Sam Rushing <rushing@nightmare.com>
# ======================================================================
# Copyright 1996 by Sam Rushing
-#
+#
# All Rights Reserved
-#
+#
# Permission to use, copy, modify, and distribute this software and
# its documentation for any purpose and without fee is hereby
# granted, provided that the above copyright notice appear in all
# Rushing not be used in advertising or publicity pertaining to
# distribution of the software without specific, written prior
# permission.
-#
+#
# SAM RUSHING DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
# NO EVENT SHALL SAM RUSHING BE LIABLE FOR ANY SPECIAL, INDIRECT OR
"""Basic infrastructure for asynchronous socket service clients and servers.
There are only two ways to have a program on a single processor do "more
-than one thing at a time". Multi-threaded programming is the simplest and
+than one thing at a time". Multi-threaded programming is the simplest and
most popular way to do it, but there is another very different technique,
that lets you have nearly all the advantages of multi-threading, without
actually using multiple threads. it's really only practical if your program
is largely I/O bound. If your program is CPU bound, then pre-emptive
scheduled threads are probably what you really need. Network servers are
-rarely CPU-bound, however.
+rarely CPU-bound, however.
-If your operating system supports the select() system call in its I/O
+If your operating system supports the select() system call in its I/O
library (and nearly all do), then you can use it to juggle multiple
communication channels at once; doing other work while your I/O is taking
place in the "background." Although this strategy can seem strange and
complex, especially at first, it is in many ways easier to understand and
control than multi-threaded programming. The module documented here solves
many of the difficult problems for you, making the task of building
-sophisticated high-performance network servers and clients a snap.
+sophisticated high-performance network servers and clients a snap.
"""
import exceptions
ar = repr(self.addr)
except:
ar = 'no self.addr!'
-
+
return '<__repr__ (self) failed for object at %x (addr=%s)>' % (id(self),ar)
def add_channel (self, map=None):
# log and log_info maybe overriden to provide more sophisitcated
# logging and warning methods. In general, log is for 'hit' logging
- # and 'log_info' is for informational, warning and error logging.
+ # and 'log_info' is for informational, warning and error logging.
def log (self, message):
sys.stderr.write ('log: %s\n' % str(message))
while 1:
tbinfo.append ((
tb.tb_frame.f_code.co_filename,
- tb.tb_frame.f_code.co_name,
+ tb.tb_frame.f_code.co_name,
str(tb.tb_lineno)
))
tb = tb.tb_next
atexit.py - allow programmer to define multiple exit functions to be executed
upon normal program termination.
-One public function, register, is defined.
+One public function, register, is defined.
"""
_exithandlers = []
_exithandlers is traversed in reverse order so functions are executed
last in, first out.
"""
-
+
while _exithandlers:
func, targs, kargs = _exithandlers[-1]
apply(func, targs, kargs)
register(x2, 12)
register(x3, 5, "bar")
register(x3, "no kwd args")
-
"""Classes for manipulating audio devices (currently only for Sun and SGI)"""
class error(Exception):
- pass
+ pass
class Play_Audio_sgi:
- # Private instance variables
-## if 0: access frameratelist, nchannelslist, sampwidthlist, oldparams, \
-## params, config, inited_outrate, inited_width, \
-## inited_nchannels, port, converter, classinited: private
-
- classinited = 0
- frameratelist = nchannelslist = sampwidthlist = None
-
- def initclass(self):
- import AL
- self.frameratelist = [
- (48000, AL.RATE_48000),
- (44100, AL.RATE_44100),
- (32000, AL.RATE_32000),
- (22050, AL.RATE_22050),
- (16000, AL.RATE_16000),
- (11025, AL.RATE_11025),
- ( 8000, AL.RATE_8000),
- ]
- self.nchannelslist = [
- (1, AL.MONO),
- (2, AL.STEREO),
- (4, AL.QUADRO),
- ]
- self.sampwidthlist = [
- (1, AL.SAMPLE_8),
- (2, AL.SAMPLE_16),
- (3, AL.SAMPLE_24),
- ]
- self.classinited = 1
-
- def __init__(self):
- import al, AL
- if not self.classinited:
- self.initclass()
- self.oldparams = []
- self.params = [AL.OUTPUT_RATE, 0]
- self.config = al.newconfig()
- self.inited_outrate = 0
- self.inited_width = 0
- self.inited_nchannels = 0
- self.converter = None
- self.port = None
- return
-
- def __del__(self):
- if self.port:
- self.stop()
- if self.oldparams:
- import al, AL
- al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
- self.oldparams = []
-
- def wait(self):
- if not self.port:
- return
- import time
- while self.port.getfilled() > 0:
- time.sleep(0.1)
- self.stop()
-
- def stop(self):
- if self.port:
- self.port.closeport()
- self.port = None
- if self.oldparams:
- import al, AL
- al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
- self.oldparams = []
-
- def setoutrate(self, rate):
- for (raw, cooked) in self.frameratelist:
- if rate == raw:
- self.params[1] = cooked
- self.inited_outrate = 1
- break
- else:
- raise error, 'bad output rate'
-
- def setsampwidth(self, width):
- for (raw, cooked) in self.sampwidthlist:
- if width == raw:
- self.config.setwidth(cooked)
- self.inited_width = 1
- break
- else:
- if width == 0:
- import AL
- self.inited_width = 0
- self.config.setwidth(AL.SAMPLE_16)
- self.converter = self.ulaw2lin
- else:
- raise error, 'bad sample width'
-
- def setnchannels(self, nchannels):
- for (raw, cooked) in self.nchannelslist:
- if nchannels == raw:
- self.config.setchannels(cooked)
- self.inited_nchannels = 1
- break
- else:
- raise error, 'bad # of channels'
-
- def writeframes(self, data):
- if not (self.inited_outrate and self.inited_nchannels):
- raise error, 'params not specified'
- if not self.port:
- import al, AL
- self.port = al.openport('Python', 'w', self.config)
- self.oldparams = self.params[:]
- al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
- al.setparams(AL.DEFAULT_DEVICE, self.params)
- if self.converter:
- data = self.converter(data)
- self.port.writesamps(data)
-
- def getfilled(self):
- if self.port:
- return self.port.getfilled()
- else:
- return 0
-
- def getfillable(self):
- if self.port:
- return self.port.getfillable()
- else:
- return self.config.getqueuesize()
-
- # private methods
-## if 0: access *: private
-
- def ulaw2lin(self, data):
- import audioop
- return audioop.ulaw2lin(data, 2)
+ # Private instance variables
+## if 0: access frameratelist, nchannelslist, sampwidthlist, oldparams, \
+## params, config, inited_outrate, inited_width, \
+## inited_nchannels, port, converter, classinited: private
+
+ classinited = 0
+ frameratelist = nchannelslist = sampwidthlist = None
+
+ def initclass(self):
+ import AL
+ self.frameratelist = [
+ (48000, AL.RATE_48000),
+ (44100, AL.RATE_44100),
+ (32000, AL.RATE_32000),
+ (22050, AL.RATE_22050),
+ (16000, AL.RATE_16000),
+ (11025, AL.RATE_11025),
+ ( 8000, AL.RATE_8000),
+ ]
+ self.nchannelslist = [
+ (1, AL.MONO),
+ (2, AL.STEREO),
+ (4, AL.QUADRO),
+ ]
+ self.sampwidthlist = [
+ (1, AL.SAMPLE_8),
+ (2, AL.SAMPLE_16),
+ (3, AL.SAMPLE_24),
+ ]
+ self.classinited = 1
+
+ def __init__(self):
+ import al, AL
+ if not self.classinited:
+ self.initclass()
+ self.oldparams = []
+ self.params = [AL.OUTPUT_RATE, 0]
+ self.config = al.newconfig()
+ self.inited_outrate = 0
+ self.inited_width = 0
+ self.inited_nchannels = 0
+ self.converter = None
+ self.port = None
+ return
+
+ def __del__(self):
+ if self.port:
+ self.stop()
+ if self.oldparams:
+ import al, AL
+ al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
+ self.oldparams = []
+
+ def wait(self):
+ if not self.port:
+ return
+ import time
+ while self.port.getfilled() > 0:
+ time.sleep(0.1)
+ self.stop()
+
+ def stop(self):
+ if self.port:
+ self.port.closeport()
+ self.port = None
+ if self.oldparams:
+ import al, AL
+ al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
+ self.oldparams = []
+
+ def setoutrate(self, rate):
+ for (raw, cooked) in self.frameratelist:
+ if rate == raw:
+ self.params[1] = cooked
+ self.inited_outrate = 1
+ break
+ else:
+ raise error, 'bad output rate'
+
+ def setsampwidth(self, width):
+ for (raw, cooked) in self.sampwidthlist:
+ if width == raw:
+ self.config.setwidth(cooked)
+ self.inited_width = 1
+ break
+ else:
+ if width == 0:
+ import AL
+ self.inited_width = 0
+ self.config.setwidth(AL.SAMPLE_16)
+ self.converter = self.ulaw2lin
+ else:
+ raise error, 'bad sample width'
+
+ def setnchannels(self, nchannels):
+ for (raw, cooked) in self.nchannelslist:
+ if nchannels == raw:
+ self.config.setchannels(cooked)
+ self.inited_nchannels = 1
+ break
+ else:
+ raise error, 'bad # of channels'
+
+ def writeframes(self, data):
+ if not (self.inited_outrate and self.inited_nchannels):
+ raise error, 'params not specified'
+ if not self.port:
+ import al, AL
+ self.port = al.openport('Python', 'w', self.config)
+ self.oldparams = self.params[:]
+ al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
+ al.setparams(AL.DEFAULT_DEVICE, self.params)
+ if self.converter:
+ data = self.converter(data)
+ self.port.writesamps(data)
+
+ def getfilled(self):
+ if self.port:
+ return self.port.getfilled()
+ else:
+ return 0
+
+ def getfillable(self):
+ if self.port:
+ return self.port.getfillable()
+ else:
+ return self.config.getqueuesize()
+
+ # private methods
+## if 0: access *: private
+
+ def ulaw2lin(self, data):
+ import audioop
+ return audioop.ulaw2lin(data, 2)
class Play_Audio_sun:
-## if 0: access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
-## inited_nchannels, converter: private
-
- def __init__(self):
- self.outrate = 0
- self.sampwidth = 0
- self.nchannels = 0
- self.inited_outrate = 0
- self.inited_width = 0
- self.inited_nchannels = 0
- self.converter = None
- self.port = None
- return
-
- def __del__(self):
- self.stop()
-
- def setoutrate(self, rate):
- self.outrate = rate
- self.inited_outrate = 1
-
- def setsampwidth(self, width):
- self.sampwidth = width
- self.inited_width = 1
-
- def setnchannels(self, nchannels):
- self.nchannels = nchannels
- self.inited_nchannels = 1
-
- def writeframes(self, data):
- if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
- raise error, 'params not specified'
- if not self.port:
- import sunaudiodev, SUNAUDIODEV
- self.port = sunaudiodev.open('w')
- info = self.port.getinfo()
- info.o_sample_rate = self.outrate
- info.o_channels = self.nchannels
- if self.sampwidth == 0:
- info.o_precision = 8
- self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
- # XXX Hack, hack -- leave defaults
- else:
- info.o_precision = 8 * self.sampwidth
- info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
- self.port.setinfo(info)
- if self.converter:
- data = self.converter(data)
- self.port.write(data)
-
- def wait(self):
- if not self.port:
- return
- self.port.drain()
- self.stop()
-
- def stop(self):
- if self.port:
- self.port.flush()
- self.port.close()
- self.port = None
-
- def getfilled(self):
- if self.port:
- return self.port.obufcount()
- else:
- return 0
-
- def getfillable(self):
- return BUFFERSIZE - self.getfilled()
+## if 0: access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
+## inited_nchannels, converter: private
+
+ def __init__(self):
+ self.outrate = 0
+ self.sampwidth = 0
+ self.nchannels = 0
+ self.inited_outrate = 0
+ self.inited_width = 0
+ self.inited_nchannels = 0
+ self.converter = None
+ self.port = None
+ return
+
+ def __del__(self):
+ self.stop()
+
+ def setoutrate(self, rate):
+ self.outrate = rate
+ self.inited_outrate = 1
+
+ def setsampwidth(self, width):
+ self.sampwidth = width
+ self.inited_width = 1
+
+ def setnchannels(self, nchannels):
+ self.nchannels = nchannels
+ self.inited_nchannels = 1
+
+ def writeframes(self, data):
+ if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
+ raise error, 'params not specified'
+ if not self.port:
+ import sunaudiodev, SUNAUDIODEV
+ self.port = sunaudiodev.open('w')
+ info = self.port.getinfo()
+ info.o_sample_rate = self.outrate
+ info.o_channels = self.nchannels
+ if self.sampwidth == 0:
+ info.o_precision = 8
+ self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
+ # XXX Hack, hack -- leave defaults
+ else:
+ info.o_precision = 8 * self.sampwidth
+ info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
+ self.port.setinfo(info)
+ if self.converter:
+ data = self.converter(data)
+ self.port.write(data)
+
+ def wait(self):
+ if not self.port:
+ return
+ self.port.drain()
+ self.stop()
+
+ def stop(self):
+ if self.port:
+ self.port.flush()
+ self.port.close()
+ self.port = None
+
+ def getfilled(self):
+ if self.port:
+ return self.port.obufcount()
+ else:
+ return 0
+
+ def getfillable(self):
+ return BUFFERSIZE - self.getfilled()
def AudioDev():
- # Dynamically try to import and use a platform specific module.
- try:
- import al
- except ImportError:
- try:
- import sunaudiodev
- return Play_Audio_sun()
- except ImportError:
- try:
- import Audio_mac
- except ImportError:
- raise error, 'no audio device'
- else:
- return Audio_mac.Play_Audio_mac()
- else:
- return Play_Audio_sgi()
+ # Dynamically try to import and use a platform specific module.
+ try:
+ import al
+ except ImportError:
+ try:
+ import sunaudiodev
+ return Play_Audio_sun()
+ except ImportError:
+ try:
+ import Audio_mac
+ except ImportError:
+ raise error, 'no audio device'
+ else:
+ return Audio_mac.Play_Audio_mac()
+ else:
+ return Play_Audio_sgi()
def test(fn = None):
- import sys
- if sys.argv[1:]:
- fn = sys.argv[1]
- else:
- fn = 'f:just samples:just.aif'
- import aifc
- af = aifc.open(fn, 'r')
- print fn, af.getparams()
- p = AudioDev()
- p.setoutrate(af.getframerate())
- p.setsampwidth(af.getsampwidth())
- p.setnchannels(af.getnchannels())
- BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
- while 1:
- data = af.readframes(BUFSIZ)
- if not data: break
- print len(data)
- p.writeframes(data)
- p.wait()
+ import sys
+ if sys.argv[1:]:
+ fn = sys.argv[1]
+ else:
+ fn = 'f:just samples:just.aif'
+ import aifc
+ af = aifc.open(fn, 'r')
+ print fn, af.getparams()
+ p = AudioDev()
+ p.setoutrate(af.getframerate())
+ p.setsampwidth(af.getsampwidth())
+ p.setnchannels(af.getnchannels())
+ BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
+ while 1:
+ data = af.readframes(BUFSIZ)
+ if not data: break
+ print len(data)
+ p.writeframes(data)
+ p.wait()
if __name__ == '__main__':
- test()
+ test()
projects / python / commitdiff