/usr/share/pyshared/eci.py is in python-ecasound 2.9.1-7ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# eci.ECI -- A higher-level interface to pyeca.
# Copyright 2001 Eric S. Tiedemann (est@hyperreal.org)
# GPLed
some updates by Janne Halttunen
"""
import pyeca as _pyeca
import types as _types
class ECIError(Exception):
def __init__(self, what):
Exception.__init__(self, what)
self.what = what
def __str__(self):
return '<ECIException %s>' % self.what
class ECI:
"""An ECI is and ECA Control Interface object.
It can be called with ECI command strings (and an optional
float value) as arguments. A list or tuple of command
strings is also accepted and commands can be separated
by newlines within a single string.
The value of a command (or of the last command in a sequence)
if returned as a value of the appropriate Python type
(possibly None).
On errors, an ECIException is raised that has a `what'
member with the exception message. These exceptions also
stringify prettily.
"""
def __init__(self, *args):
self.e = apply(_pyeca.ECA_CONTROL_INTERFACE, args)
def __call__(self, cmd, f=None):
if f != None:
self.e.command_float_arg(cmd, f)
else:
if type(cmd) == _types.ListType or type(cmd) == _types.TupleType:
v = None
for c in cmd:
v = self(c)
return v
else:
cmds = cmd.split('\n')
if len(cmds) > 1:
v = None
for c in cmds:
v = self(c)
return v
else:
self.e.command(cmd)
t = self.e.last_type()
if not t or t == '-':
return None
elif t == 'S':
return self.e.last_string_list()
elif t == 's':
return self.e.last_string()
elif t == 'f':
return self.e.last_float()
elif t == 'i':
return self.e.last_integer()
elif t == 'li':
return self.e.last_long_integer()
elif t == 'e' or self.e.error():
raise ECIError, '%s: %s' % (self.e.last_error(), cmd)
else:
raise ECIError, "unknown return type '%s'!" % t
if __name__ == '__main__':
import time, sys
file = sys.argv[1]
e = ECI()
# uncomment to raise an error :)
#e('foo')
e("""
cs-add play_chainsetup
c-add 1st_chain
ai-add %s
ao-add /dev/dsp
cop-add -efl:100
cop-select 1
copp-select 1
cs-connect
start"""
% file)
cutoff_inc = 500.0
while 1:
time.sleep(1)
if e("engine-status") != "running" or e("get-position") > 15:
break
e("copp-set", cutoff_inc + e("copp-get"))
e("""stop
cs-disconnect""")
print "Chain operator status: ", e("cop-status")
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