ekgplotter

ekgplotter/ekgplotter/main.py

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+import pyqtgraph as pg
+import select
+import socket
+import cStringIO
+import subprocess
+import threading
+import time
+from PyQt4.QtCore import QBuffer, QByteArray, QIODevice
+
+from collections import deque
+
+# -*- coding: utf-8 -*-
+
+"""This module implements the standalone filtering tool in the chaosc framework.
+
+It uses the chaosc osc_lib but does not depend on chaosc features, so it can
+be used with other osc compatible gear.
+
+We provide here osc message filtering based on python regex defined in a file
+and a very flexible transcoding toolchain, but it's up to your python skills
+to master them. The TranscoderBaseHandler subclasses should be defined in the
+appropriate python module you place in the config directory. Please refer for
+a howto/examples to our comprehensive docs or look into the provided example
+transcoding.py file.
+"""
+
+# This file is part of chaosc
+#
+# chaosc is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# chaosc is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with chaosc.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Copyright (C) 2012-2014 Stefan Kögl
+
+from __future__ import absolute_import
+
+
+import atexit
+import sys, argparse
+
+from datetime import datetime
+from chaosc.simpleOSCServer import SimpleOSCServer
+import chaosc._version
+
+
+class ChaoscLogger(SimpleOSCServer):
+    """OSC filtering/transcoding middleware
+    """
+
+    def __init__(self, args):
+        """ctor for filter server
+
+        starts the server, loads scene filters and transcoders and chooses
+        the request handler, which is one of
+        forward only, forward and dump, dump only.
+
+        :param result: return value of argparse.parse_args
+        :type result: namespace object
+        """
+
+        d = datetime.now().strftime("%x %X")
+        print "%s: starting up chaosc_dump-%s..." % (d, chaosc._version.__version__)
+        SimpleOSCServer.__init__(self, (args.own_host, args.own_port))
+        self.args = args
+        self.chaosc_address = (args.chaosc_host, args.chaosc_port)
+
+        if args.subscribe:
+            self.subscribe_me(self.chaosc_address, (args.own_host, args.own_port),
+                args.token, args.subscriber_label)
+
+        self.plot_data = deque([0] * 100)
+        self.plt = pg.plot()
+
+
+    def dispatchMessage(self, osc_address, typetags, args, packet,
+        client_address):
+        """Handles this filtering, transcoding steps and forwards the result
+
+        :param osc_address: the OSC address string.
+        :type osc_address: str
+
+        :param typetags: the typetags of args
+        :type typetags: list
+
+        :param args: the osc message args
+        :type args: list
+
+        :param packet: the binary representation of a osc message
+        :type packet: str
+
+        :param client_address: (host, port) of the requesting client
+        :type client_address: tuple
+        """
+
+
+        if osc_address == "/uwe/ekg":
+            self.plot_data.appendleft(args[0])
+            self.plot_data.pop()
+            self.plt.plot(self.plot_data, clear=True)
+            exporter = pg.exporters.ImageExporter.ImageExporter(self.plt.plotItem)
+            exporter.parameters()['width'] = 1024
+            name = '/tmp/plotImage.jpg'
+            exporter.export(name)
+
+
+
+    def unsubscribe(self):
+        self.unsubscribe_me(self.chaosc_address, (self.args.own_host, self.args.own_port),
+            self.args.token)
+
+
+
+def main():
+    parser = argparse.ArgumentParser(prog='ekgplotter')
+    main_args_group = parser.add_argument_group('main flags', 'flags for chaosc_transcoder')
+    chaosc_args_group = parser.add_argument_group('chaosc', 'flags relevant for interacting with chaosc')
+
+    main_args_group.add_argument('-o', "--own_host", required=True,
+        type=str, help='my host')
+    main_args_group.add_argument('-p', "--own_port", required=True,
+        type=int, help='my port')
+
+    chaosc_args_group.add_argument('-s', '--subscribe', action="store_true",
+        help='if True, this transcoder subscribes itself to chaosc. If you use this, you need to provide more flags in this group')
+    chaosc_args_group.add_argument('-S', '--subscriber_label', type=str, default="chaosc_transcoder",
+        help='the string to use for subscription label, default="chaosc_transcoder"')
+    chaosc_args_group.add_argument('-t', '--token', type=str, default="sekret",
+        help='token to authorize subscription command, default="sekret"')
+    chaosc_args_group.add_argument("-H", '--chaosc_host',
+        type=str, help='host of chaosc instance')
+    chaosc_args_group.add_argument("-P", '--chaosc_port',
+        type=int, help='port of chaosc instance')
+
+    server = ChaoscLogger(parser.parse_args(sys.argv[1:]))
+
+    atexit.register(server.unsubscribe)
+    server.serve_forever()
+

ekgplotter/setup.py

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+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+from distribute_setup import use_setuptools
+use_setuptools()
+
+import sys
+from setuptools import find_packages, setup
+
+if sys.version_info >= (3,):
+    extras['use_2to3'] = True
+
+setup(
+    name='ekgplotter',
+    version="0.1",
+    packages=find_packages(exclude=["scripts",]),
+
+    include_package_data = True,
+
+    package_data = {
+        "chaosc" :  ["config/*",]},
+
+    exclude_package_data = {'': ['.gitignore']},
+
+    install_requires=[],
+
+    # installing unzipped
+    zip_safe = False,
+
+    # predefined extension points, e.g. for plugins
+    entry_points = """
+    [console_scripts]
+    ekgplot = ekgplotter.main:main
+    """,
+    # pypi metadata
+    author = "Stefan Kögl",
+
+    # FIXME: add author email
+    author_email = "",
+    description = "osc filtering application level gateway",
+
+    # FIXME: add long_description
+    long_description = """
+    """,
+
+    # FIXME: add license
+    license = "LGPL",
+
+    # FIXME: add keywords
+    keywords = "",
+
+    # FIXME: add download url
+    url = "",
+    test_suite='tests'
+)