"""
Copyright 2012 Free Software Foundation, Inc.

This file is part of GNU Radio

GNU Radio Companion 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.

GNU Radio Companion 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
"""

MAIN_TMPL = """\
<?xml version="1.0"?>
<block>
	<name>OsmoSDR $sourk.title()</name>
	<key>osmosdr_$(sourk)_c</key>
	<throttle>1</throttle>
	<import>import osmosdr</import>
	<make>osmosdr.$(sourk)_c( args="nchan=" + str(\$nchan) + " " + \$args  )
self.\$(id).set_sample_rate(\$sample_rate)
#for $n in range($max_nchan)
\#if \$nchan() > $n
self.\$(id).set_center_freq(\$freq$(n), $n)
self.\$(id).set_freq_corr(\$corr$(n), $n)
self.\$(id).set_gain_mode(\$gain_mode$(n), $n)
self.\$(id).set_gain(\$gain$(n), $n)
\#if \$ant$(n)()
self.\$(id).set_antenna(\$ant$(n), $n)
\#end if
\#end if
#end for
</make>
	<callback>set_sample_rate(\$sample_rate)</callback>
	#for $n in range($max_nchan)
	<callback>set_center_freq(\$freq$(n), $n)</callback>
	<callback>set_freq_corr(\$corr$(n), $n)</callback>
	<callback>set_gain_mode(\$gain_mode$(n), $n)</callback>
	<callback>set_gain(\$gain$(n), $n)</callback>
	<callback>set_antenna(\$ant$(n), $n)</callback>
	#end for
	<param>
		<name>$(dir.title())put Type</name>
		<key>type</key>
		<type>enum</type>
		<option>
			<name>Complex float32</name>
			<key>fc32</key>
			<opt>type:fc32</opt>
		</option>
	</param>
	<param>
		<name>Device Arguments</name>
		<key>args</key>
		<value></value>
		<type>string</type>
		<hide>
			\#if \$args()
				none
			\#else
				part
			\#end if
		</hide>
	</param>
	<param>
		<name>Num Channels</name>
		<key>nchan</key>
		<value>1</value>
		<type>int</type>
		#for $n in range(1, $max_nchan+1)
		<option>
			<name>$(n)</name>
			<key>$n</key>
		</option>
		#end for
	</param>
	<param>
		<name>Sample Rate (sps)</name>
		<key>sample_rate</key>
		<value>samp_rate</value>
		<type>real</type>
	</param>
	$params
	<check>$max_nchan >= \$nchan</check>
	<check>\$nchan > 0</check>
	<$sourk>
		<name>$dir</name>
		<type>\$type.type</type>
		<nports>\$nchan</nports>
	</$sourk>
	<doc>
The OsmoSDR $sourk.title() block:

While primarily being developed for the OsmoSDR hardware, this block also
supports the FunCube Dongle, Ettus UHD, rtl-sdr radios and cfile source.
By using the OsmoSDR block you can take advantage of a common software api in
your application(s) independent of the underlying radio hardware.

Output Type:
This parameter controls the data type of the stream in gnuradio.

Device Arguments:
The device argument is a delimited string used to locate devices on your system.
Use the device id or name (if applicable) to specify a specific device or list
of devices. If left blank, the first device found will be used.

Examples:
  fcd=0 fcd=1 fcd=2 ...
  rtl=0 rtl=1 rtl=2,rtl_xtal=28.80001e6,tuner_xtal=26e6,buffers=64 ...
  uhd=0|name,mcr=52e6,nchan=2,subdev='\\\\'B:0 A:0'\\\\' ...
  osmosdr=0|name,mcr=64e6,nchan=5,port=/dev/ttyUSB0 ...
  file=/path/to/file.ext,freq=428e6,rate=1e6,repeat=true,throttle=true

Num Channels:
Selects the total number of channels in this multi-device configuration.

Sample Rate:
The sample rate is the number of samples per second output by this block.

Frequency:
The center frequency is the overall frequency of the RF chain.

Freq. Corr.:
The frequency correction factor in parts per million (ppm). Leave 0 if unknown.

Gain:
Overall gain of the device's signal path. For the new gain value to be applied,
the manual gain mode must be enabled first.

Gain Mode:
Chooses between the manual (default) and automatic gain mode where appropriate.
Currently, only rtlsdr devices support automatic gain mode.

Antenna:
For devices with only one antenna, this may be left blank.
Otherwise, the user should specify one of the possible antenna choices.

See the OsmoSDR project page for more detailed documentation:
http://sdr.osmocom.org/trac/
http://sdr.osmocom.org/trac/wiki/GrOsmoSDR
	</doc>
</block>
"""

PARAMS_TMPL = """
	<param>
		<name>Ch$(n): Frequency (Hz)</name>
		<key>freq$(n)</key>
		<value>0</value>
		<type>real</type>
		<hide>\#if \$nchan() > $n then 'none' else 'all'#</hide>
	</param>
	<param>
	<name>Ch$(n): Freq. Corr. (ppm)</name>
		<key>corr$(n)</key>
		<value>0</value>
		<type>real</type>
		<hide>\#if \$nchan() > $n then 'none' else 'all'#</hide>
	</param>
	<param>
		<name>Ch$(n): Gain (dB)</name>
		<key>gain$(n)</key>
		<value>0</value>
		<type>real</type>
		<hide>\#if \$nchan() > $n then 'none' else 'all'#</hide>
	</param>
	<param>
		<name>Ch$(n): Gain Mode</name>
		<key>gain_mode$(n)</key>
		<value></value>
		<type>enum</type>
		<hide>\#if \$nchan() > $n then 'none' else 'all'#</hide>
		<option>
			<name>Manual</name>
			<key>1</key>
		</option>
		<option>
			<name>Auto</name>
			<key>0</key>
		</option>
	</param>
	<param>
		<name>Ch$(n): Antenna</name>
		<key>ant$(n)</key>
		<value></value>
		<type>string</type>
		<hide>
			\#if not \$nchan() > $n
				all
			\#elif \$ant$(n)()
				none
			\#else
				part
			\#end if
		</hide>
	</param>
"""

def parse_tmpl(_tmpl, **kwargs):
	from Cheetah import Template
	return str(Template.Template(_tmpl, kwargs))

max_num_channels = 5

if __name__ == '__main__':
	import sys
	for file in sys.argv[1:]:
		if file.endswith ('source_c.xml'):
			sourk = 'source'
			dir = 'out'
		elif file.endswith ('sink_c.xml'):
			sourk = 'sink'
			dir = 'in'
		else: raise Exception, 'is %s a source or sink?'%file

		params = ''.join([parse_tmpl(PARAMS_TMPL, n=n) for n in range(max_num_channels)])
		open(file, 'w').write(parse_tmpl(MAIN_TMPL,
			max_nchan=max_num_channels,
			params=params,
			sourk=sourk,
			dir=dir,
		))