About: Python/Csound

Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Python/Csound Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Here is what we are playing with at the moment, the 'universal server'. #!/usr/bin/python import select import sys import socket import csnd import threading This is a multiple-client csound server class. the listener is put in a separate thread class CsoundServerMult: This is the listener thread function. It just waits for TCP connections Server start-up:eventually setblocking should be made 0 This is the interpreter function. If something is seen on the socket, it executes it as Python code def interpret(self): This is the interpreter loop:

Attributes	Values
rdfs:label	Python/Csound
rdfs:comment	Here is what we are playing with at the moment, the 'universal server'. #!/usr/bin/python import select import sys import socket import csnd import threading This is a multiple-client csound server class. the listener is put in a separate thread class CsoundServerMult: This is the listener thread function. It just waits for TCP connections Server start-up:eventually setblocking should be made 0 This is the interpreter function. If something is seen on the socket, it executes it as Python code def interpret(self): This is the interpreter loop:
dcterms:subject	Code Python
dbkwik:code/proper...iPageUsesTemplate	dbkwik:resource/1YVFG4vtKWQAvzTSc0Z8dw==
abstract	Here is what we are playing with at the moment, the 'universal server'. #!/usr/bin/python import select import sys import socket import csnd import threading This is a multiple-client csound server class. the listener is put in a separate thread class CsoundServerMult: This is the listener thread function. It just waits for TCP connections def listen(self): while not self.end: print 'waiting for connections..' self.socks.listen(32) c, a = self.socks.accept() if self.end: print 'exiting...' else: print 'Connected to', a self.conn.append(c) self.addr.append(a) self.fd.append(c.fileno()) self.cnt =+ 1 Server start-up:eventually setblocking should be made 0 def __init__(self, port=40002): self.end = False self.port = port self.socks = socket.socket() self.socks.bind((, self.port)) self.conn = list() self.addr = list() self.fd = list() self.cnt = 0 self.socks.setblocking(1) print "Csound Python server@%s:%d" % (socket.gethostname(), port) self.listener = threading.Thread(None,self.listen) self.listener.start() This is the interpreter function. If something is seen on the socket, it executes it as Python code def interpret(self): This runs the universal orchestra (univorc.csd) and starts the performance. Eventually, we will have to cron a csound instance reset and re-compile after a while to clear up memory. csound = csnd.Csound() perf = csnd.CsoundPerformanceThread(csound) csound.Compile('univorc.csd') perf.Play() This is the interpreter loop: while not self.end: r,w,x = select.select(self.fd,[],[], 0) for i in r: try: socks = socket.fromfd(i,socket.AF_INET,socket.SOCK_STREAM) data = socks.recv(256) exec data except: print "exception in code: " + data This is the shut-off function. It is a bit of a hack, because the listening thread is blocked at socket.listen(). So we need to unblock it by making a connection, then it can quit the loop and exit def off(self): self.end = True sc = socket.socket() sc.connect(('localhost',self.port)) sc.close() for i in self.conn: i.close() self.end = True self.socks.close() The script can run as the 'main' application or the CsoundServerMult class can be re-used by another program. if __name__=="__main__": if len(sys.argv) == 2: s = CsoundServerMult(int(sys.argv[1])) else: s = CsoundServerMult() s.interpret()

OpenLink Virtuoso version 07.20.3217, on Linux (x86_64-pc-linux-gnu), Standard Edition
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2012 OpenLink Software