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Diffstat (limited to 'gr-atsc/src/python/interp_short.py')
-rwxr-xr-x | gr-atsc/src/python/interp_short.py | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/gr-atsc/src/python/interp_short.py b/gr-atsc/src/python/interp_short.py deleted file mode 100755 index d07b941c12..0000000000 --- a/gr-atsc/src/python/interp_short.py +++ /dev/null @@ -1,78 +0,0 @@ -#!/usr/bin/env /usr/bin/python -# -# Copyright 2004 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio 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, or (at your option) -# any later version. -# -# GNU Radio 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 GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, -# Boston, MA 02111-1307, USA. -# -# This module starts the atsc processing chain taking the captured -# off-air signal created with: -# -# uhd_rx_cfile.py --samp-rate=6.4e6 -# -f <center of tv signal channel freq> -# -g <appropriate gain for best signal / noise> -# -s output shorts -# -# All this module does is multiply the sample rate by 3, from 6.4e6 to -# 19.2e6 complex samples / sec, then lowpass filter with a cutoff of 3.2MHz -# and a transition band width of .5MHz. Center of the tv channels is -# then at 0 with edges at -3.2MHz and 3.2MHz. - -from gnuradio import gr -from gnuradio import blocks -from gnuradio import filter -import sys, os - -def graph (args): - - print os.getpid() - - nargs = len (args) - if nargs == 1: - infile = args[0] - else: - sys.stderr.write('usage: interp.py input_file\n') - sys.exit (1) - - tb = gr.top_block() - - srcf = blocks.file_source(gr.sizeof_short,infile) - s2ss = blocks.stream_to_streams(gr.sizeof_short,2) - s2f1 = blocks.short_to_float() - s2f2 = blocks.short_to_float() - src0 = blocks.float_to_complex() - - - lp_coeffs = filter.firdes.low_pass(3, 19.2e6, 3.2e6, .5e6, - filter.firdes.WIN_HAMMING) - lp = filter.interp_fir_filter_ccf(3, lp_coeffs) - - file = blocks.file_sink(gr.sizeof_gr_complex,"/tmp/atsc_pipe_1") - - tb.connect( srcf, s2ss ) - tb.connect( (s2ss, 0), s2f1, (src0,0) ) - tb.connect( (s2ss, 1), s2f2, (src0,1) ) - tb.connect( src0, lp, file) - - tb.start() - raw_input ('Head End: Press Enter to stop') - tb.stop() - -if __name__ == '__main__': - graph (sys.argv[1:]) - - |