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#!/usr/bin/python
# ecarack: use ecasound to run a saved JACK Rack configuration.
# This is rather simplistic: it only looks at plugin controls and the Enable
# buttons, so MIDI controls, wet/dry settings and the like will be ignored.
# Copyright (C) 2007 Adam Sampson <ats@offog.org>
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
import sys, os, gzip, xml.dom.minidom
def main(args):
if len(args) != 1 or args[0] == "--help":
print >>sys.stderr, "Usage: ecarack RACK-FILE"
return 1
try:
f = gzip.open(args[0], "r")
except IOError, e:
print >>sys.stderr, "Failed to open %s: %s" % (args[0], e)
return 1
try:
dom = xml.dom.minidom.parse(f)
except:
print >>sys.stderr, "Failed to parse %s" % args[0]
return 1
f.close()
cmd = ["ecasound", "-i:jack_auto", "-o:jack_auto"]
def get(node, tag):
return node.getElementsByTagName(tag)
def text(node):
if node.nodeType == node.TEXT_NODE:
return node.data
else:
return " ".join(map(text, node.childNodes)).strip()
for plugin in get(dom, "plugin"):
if text(get(plugin, "enabled")[0]) == "false":
continue
id = text(get(plugin, "id")[0])
controls = [text(get(n, "value")[0])
for n in get(plugin, "controlrow")]
cmd.append("-eli:" + id + "".join(["," + v for v in controls]))
print >>sys.stderr, "ecarack: running " + " ".join(cmd)
os.execvp(cmd[0], cmd)
return 1
if __name__ == "__main__":
sys.exit(main(sys.argv[1:]))
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