interp_test_01.py

#!/usr/bin/env python
#
# =============================================================================
#
#                                   Preamble
#
# =============================================================================
#


import numpy
import sys
from gstlal import pipeparts
import test_common


#
# =============================================================================
#
#                                  Pipelines
#
# =============================================================================
#


#
# check for timestamp drift in the audioresample
#


def interp_test_01(pipeline, name):
    #
    # try changing these.  test should still work!
    #

    in_rate = 64    # Hz
    out_rate = 128 # Hz
    gap_frequency = 0.5 # Hz
    gap_threshold = .75 # of 1
    buffer_length = 5.0 # seconds
    test_duration = 20.0    # seconds

    #
    # build pipeline
    #

    head = test_common.gapped_test_src(pipeline, channels = 1, wave = 0, freq = 10, buffer_length = buffer_length, rate = in_rate, test_duration = test_duration, gap_frequency = gap_frequency, gap_threshold = gap_threshold, control_dump_filename = "%s_control.dump" % name)
    head = pipeparts.mkcapsfilter(pipeline, pipeparts.mkaudioconvert(pipeline, head), "audio/x-raw-float, rate=%d, width=32" % in_rate)
    head = tee = pipeparts.mktee(pipeline, head)

    head = pipeparts.mkcapsfilter(pipeline, pipeparts.mkinterpolator(pipeline, head), "audio/x-raw-float, rate=%d" % out_rate)
    pipeparts.mknxydumpsink(pipeline, pipeparts.mkqueue(pipeline, head), "%s_out.dump" % name)
    pipeparts.mknxydumpsink(pipeline, pipeparts.mkqueue(pipeline, tee), "%s_in.dump" % name)

    #
    # done
    #

    return pipeline


#
# =============================================================================
#
#                                     Main
#
# =============================================================================
#


test_common.build_and_run(interp_test_01, "interp_test_01")