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