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#!/usr/bin/python
#
# flufigut
#
# flufigut, the flumotion configuration utility, is a simple tool
# that generates flumotion configuration files using pyhton jinja2
# template engine and simplejson. flufigut generates planet.xml
# and worker.xml files from configuration templates and an easy to
# understand representation of the flow structure written in json.
#
#
# Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
# Michael Gebetsroither <michael@mgeb.org>
#
# This file is part of flufigut.
#
# flufigut 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
# any later version.
#
# flufigut 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 flufigut. If not, see <http://www.gnu.org/licenses/>.
#
import string
import random
import sys
import simplejson as json
from exceptions import *
from jinja2 import Environment, FileSystemLoader
### helper functions ############################################
#
def rand_string(size=8, chars=string.ascii_lowercase + string.ascii_uppercase + string.digits):
return ''.join(random.choice(chars) for x in range(size))
### parse json file #############################################
#
if len(sys.argv) <= 2:
raise SystemExit("No template name and or configuration file given")
cf = open(sys.argv[2], 'r')
config = json.load(cf);
cf.close();
### initialization ##############################################
#
atmosphere = {}
flow = {}
machines = {}
### generate porter for all streamer/machines ###################
#
idx = 0
for streamer in config['streamer']:
worker = 'streamer%i'%(idx)
port = streamer['config']['port']
found = False
for machine in config['globals']['machines'].keys():
if worker in config['globals']['machines'][machine]:
if machine in machines:
if 'porter' in machines[machine]:
if port in machines[machine]['porter']:
print "Porter: machine %s already uses port %i" % (machine, port)
sys.exit(1)
else:
machines[machine]['porter'] = {}
else:
machines[machine] = { 'porter': {} }
found = True
machines[machine]['porter'][port] = {
'socket-path': "porter%i-%s"%(idx, rand_string()),
'username': rand_string(size=12),
'password': rand_string(size=12),
}
atmosphere['porter-%s-%i'%(machine, port)] = {
'type': "porter",
'desc': "Porter for %s on port %i"%(machine, port),
'worker': worker,
'properties': {
'port': port,
'socket-path': machines[machine]['porter'][port]['socket-path'],
'username': machines[machine]['porter'][port]['username'],
'password': machines[machine]['porter'][port]['password'],
},
}
if not found:
print "Streamer %i has no machine assigned" % (idx)
sys.exit(1)
idx+=1
### generate input components ###################################
flow['input'] = {}
flow['input']['raw-input'] = {
'type': config['input']['source'],
'desc': "capture raw AV from %s" % config['input']['source'],
'worker': 'input',
'properties': {},
}
for property in config['input'].keys():
if property == 'samplerate':
flow['input']['raw-input']['properties'][property] = config['input']['samplerate']
elif property == 'resolution':
flow['input']['raw-input']['properties']['width'] = config['globals']['resolutions'][config['input'][property]]['width']
flow['input']['raw-input']['properties']['height'] = config['globals']['resolutions'][config['input'][property]]['height']
flow['input']['raw-input']['properties']['framerate'] = config['globals']['resolutions'][config['input'][property]]['rate']
elif property != 'source':
flow['input']['raw-input']['properties'][property] = config['input'][property]
resolutions = [ ]
for encoder in config['encoder']['video'].keys():
for resolution in config['encoder']['video'][encoder].keys():
if resolution not in resolutions:
if config['input']['resolution'] != resolution:
if config['globals']['resolutions'][resolution]['rate'] != config['globals']['resolutions'][config['input']['resolution']]['rate']:
print "video rate conversion is not yet supported!!!"
sys.exit(-1)
resolutions.append(resolution)
for resolution in resolutions:
flow['input']['resize-%s' % resolution] = {
'type': 'video-resize',
'desc': "resize video to %sx%s" % (config['globals']['resolutions'][resolution]['width'], config['globals']['resolutions'][resolution]['height']),
'worker': 'input',
'feeder': 'raw-input:video',
'properties': {
'width': config['globals']['resolutions'][resolution]['width'],
'height': config['globals']['resolutions'][resolution]['height'],
},
}
samplerates = [ ]
for encoder in config['encoder']['audio'].keys():
for audiorate in config['encoder']['audio'][encoder]:
samplerate = config['globals']['audiorates'][audiorate]['samplerate']
if samplerate not in samplerates:
if config['input']['samplerate'] != samplerate:
samplerates.append(samplerate)
for samplerate in samplerates:
flow['input']['resample-%s' % samplerate] = {
'type': 'audio-resample',
'desc': "resample audio to %s Hz" % samplerate,
'worker': 'input',
'feeder': 'raw-input:audio',
'properties': {
'samplerate': samplerate,
},
}
### generate encoder components #################################
flow['encoder'] = {}
for encoder in config['encoder']['video'].keys():
for resolution in config['encoder']['video'][encoder].keys():
if resolution == config['input']['resolution']:
feeder = 'raw-input:video'
else:
feeder = 'resize-%s' % resolution
flow['encoder']['encode-%s-%s' % (encoder, resolution)] = {
'type': '%s-encode' % encoder,
'desc': "%s encoder for %sx%s" % (encoder, config['globals']['resolutions'][resolution]['width'], config['globals']['resolutions'][resolution]['height']),
'worker': 'encoder-%s' % encoder,
'feeder': feeder,
'properties': {
'bitrate': config['encoder']['video'][encoder][resolution],
},
}
### generate muxer components ###################################
flow['muxer'] = {}
# TODO
### generate streamer components ################################
flow['streamer'] = {}
# TODO
### initialize and render templates #############################
#
env = Environment(loader=FileSystemLoader('../templates/%s/' % (sys.argv[1])), line_statement_prefix = '%%')
template = env.get_template('planet.xml')
planet = template.render(globals=config['globals'], atmosphere=atmosphere, flow=flow)
sys.stdout.write(planet.encode("utf8"))
### end #########################################################
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