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#!/usr/bin/env python
#
# Copyright 2008,2010,2013 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 3, 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., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
from gnuradio import gr, gr_unittest, blocks
import os
from os.path import getsize
g_in_file = os.path.join(os.getenv("srcdir"), "test_16bit_1chunk.wav")
g_extra_header_offset = 36
g_extra_header_len = 18
class test_wavefile(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001_checkwavread(self):
wf = blocks.wavfile_source(g_in_file)
self.assertEqual(wf.sample_rate(), 8000)
def test_002_checkwavcopy(self):
infile = g_in_file
outfile = "test_out.wav"
wf_in = blocks.wavfile_source(infile)
wf_out = blocks.wavfile_sink(outfile,
wf_in.channels(),
wf_in.sample_rate(),
wf_in.bits_per_sample())
self.tb.connect(wf_in, wf_out)
self.tb.run()
wf_out.close()
# we're loosing all extra header chunks
self.assertEqual(getsize(infile) - g_extra_header_len, getsize(outfile))
in_f = open(infile, 'rb')
out_f = open(outfile, 'rb')
in_data = in_f.read()
out_data = out_f.read()
out_f.close()
os.remove(outfile)
# cut extra header chunks input file
self.assertEqual(in_data[:g_extra_header_offset] + \
in_data[g_extra_header_offset + g_extra_header_len:], out_data)
if __name__ == '__main__':
gr_unittest.run(test_wavefile, "test_wavefile.xml")
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