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#!/usr/bin/env python3
#
# usage:
# roc-test-audio -v -g resampler -n upscale_downscale_mono |& \
# ./scripts/plot_resampler_test_dump.py
#
import pylab
import numpy
import re
import fileinput
orig = []
proc = []
for line in fileinput.input():
m = re.search('roc_test: dump (\S+) (\S+)', line)
if m:
orig.append(float(m.group(1)))
proc.append(float(m.group(2)))
orig = numpy.array(orig)
proc = numpy.array(proc)
_, px = pylab.subplots(2, 1, sharex=True)
px[0].plot(orig, '.-', label='orig')
px[0].plot(proc, '.-', label='proc')
px[0].legend()
px[0].grid()
px[1].plot(numpy.abs(orig-proc), '.-', label='abs(diff)')
px[1].legend()
px[1].grid()
pylab.show()
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