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#!/usr/bin/env python
#
# Copyright 2011 Ettus Research LLC
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
TMPL_HEADER = """
#import time
/***********************************************************************
* This file was generated by $file on $time.strftime("%c")
**********************************************************************/
\#include "convert_common.hpp"
\#include <uhd/utils/byteswap.hpp>
using namespace uhd::convert;
"""
TMPL_CONV_GEN2_COMPLEX = """
DECLARE_CONVERTER($(cpu_type), 1, sc16_item32_$(end), 1, PRIORITY_GENERAL){
const $(cpu_type)_t *input = reinterpret_cast<const $(cpu_type)_t *>(inputs[0]);
item32_t *output = reinterpret_cast<item32_t *>(outputs[0]);
for (size_t i = 0; i < nsamps; i++){
output[i] = $(to_wire)($(cpu_type)_to_item32_sc16(input[i], scale_factor));
}
}
DECLARE_CONVERTER(sc16_item32_$(end), 1, $(cpu_type), 1, PRIORITY_GENERAL){
const item32_t *input = reinterpret_cast<const item32_t *>(inputs[0]);
$(cpu_type)_t *output = reinterpret_cast<$(cpu_type)_t *>(outputs[0]);
for (size_t i = 0; i < nsamps; i++){
output[i] = item32_sc16_to_$(cpu_type)($(to_host)(input[i]), scale_factor);
}
}
DECLARE_CONVERTER(sc8_item32_$(end), 1, $(cpu_type), 1, PRIORITY_GENERAL){
const item32_t *input = reinterpret_cast<const item32_t *>(size_t(inputs[0]) & ~0x3);
$(cpu_type)_t *output = reinterpret_cast<$(cpu_type)_t *>(outputs[0]);
$(cpu_type)_t dummy;
const bool head_case = ((size_t(inputs[0]) & 0x3) != 0);
const bool tail_case = ((nsamps & 0x1) == 0)? head_case : not head_case;
const size_t num_pairs = (head_case? nsamps-1 : nsamps)/2;
size_t i = 0, j = 0;
//special head case, probably from a partial recv
if (head_case){
const item32_t item0 = $(to_host)(input[i++]);
item32_sc8_to_$(cpu_type)(item0, dummy, output[j++], scale_factor);
}
for (; i < num_pairs; i++, j+=2){
const item32_t item_i = $(to_host)(input[i]);
item32_sc8_to_$(cpu_type)(item_i, output[j], output[j+1], scale_factor);
}
//special tail case, finished on an odd number
if (tail_case){
const item32_t item_i = $(to_host)(input[i]);
item32_sc8_to_$(cpu_type)(item_i, output[j], dummy, scale_factor);
}
}
"""
TMPL_CONV_USRP1_COMPLEX = """
DECLARE_CONVERTER($(cpu_type), $(width), sc16_item16_usrp1, 1, PRIORITY_GENERAL){
#for $w in range($width)
const $(cpu_type)_t *input$(w) = reinterpret_cast<const $(cpu_type)_t *>(inputs[$(w)]);
#end for
boost::uint16_t *output = reinterpret_cast<boost::uint16_t *>(outputs[0]);
if (scale_factor == 0){} //avoids unused warning
for (size_t i = 0, j = 0; i < nsamps; i++){
#for $w in range($width)
output[j++] = $(to_wire)(boost::int16_t(input$(w)[i].real()$(do_scale)));
output[j++] = $(to_wire)(boost::int16_t(input$(w)[i].imag()$(do_scale)));
#end for
}
}
DECLARE_CONVERTER(sc16_item16_usrp1, 1, $(cpu_type), $(width), PRIORITY_GENERAL){
const boost::uint16_t *input = reinterpret_cast<const boost::uint16_t *>(inputs[0]);
#for $w in range($width)
$(cpu_type)_t *output$(w) = reinterpret_cast<$(cpu_type)_t *>(outputs[$(w)]);
#end for
if (scale_factor == 0){} //avoids unused warning
for (size_t i = 0, j = 0; i < nsamps; i++){
#for $w in range($width)
output$(w)[i] = $(cpu_type)_t(
boost::int16_t($(to_host)(input[j+0]))$(do_scale),
boost::int16_t($(to_host)(input[j+1]))$(do_scale)
);
j += 2;
#end for
}
}
DECLARE_CONVERTER(sc8_item16_usrp1, 1, $(cpu_type), $(width), PRIORITY_GENERAL){
const boost::uint16_t *input = reinterpret_cast<const boost::uint16_t *>(inputs[0]);
#for $w in range($width)
$(cpu_type)_t *output$(w) = reinterpret_cast<$(cpu_type)_t *>(outputs[$(w)]);
#end for
if (scale_factor == 0){} //avoids unused warning
for (size_t i = 0, j = 0; i < nsamps; i++){
#for $w in range($width)
{
const boost::uint16_t num = $(to_host)(input[j++]);
output$(w)[i] = $(cpu_type)_t(
boost::int8_t(num)$(do_scale),
boost::int8_t(num >> 8)$(do_scale)
);
}
#end for
}
}
"""
def parse_tmpl(_tmpl_text, **kwargs):
from Cheetah.Template import Template
return str(Template(_tmpl_text, kwargs))
if __name__ == '__main__':
import sys, os
file = os.path.basename(__file__)
output = parse_tmpl(TMPL_HEADER, file=file)
#generate complex converters for all gen2 platforms
for end, to_host, to_wire in (
('be', 'uhd::ntohx', 'uhd::htonx'),
('le', 'uhd::wtohx', 'uhd::htowx'),
):
for cpu_type in 'fc64', 'fc32', 'sc16':
output += parse_tmpl(
TMPL_CONV_GEN2_COMPLEX,
end=end, to_host=to_host, to_wire=to_wire, cpu_type=cpu_type
)
#generate complex converters for usrp1 format
for width in 1, 2, 4:
for cpu_type, do_scale in (
('fc64', '*scale_factor'),
('fc32', '*float(scale_factor)'),
('sc16', ''),
):
output += parse_tmpl(
TMPL_CONV_USRP1_COMPLEX,
width=width, to_host='uhd::wtohx', to_wire='uhd::htowx',
cpu_type=cpu_type, do_scale=do_scale
)
open(sys.argv[1], 'w').write(output)
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