gstreamer/subprojects/gst-plugins-base/tests/validate/audiotestsrc/reverse.validatetest

meta,
    args = {
        "audiotestsrc name=src samplesperbuffer=1024 ! audio/x-raw,format=S16LE,rate=44100 ! fakesink name=asink sync=true",
    },
    configs = {
        "$(validateflow), pad=asink:sink, record-buffers=true",
    },
    handles-states=true,
    ignore-eos=true

play;
seek, start=0.0, stop=0.5, rate=-1.0, flags=accurate+flush

crank-clock, expected-time=0.0

# roundup((44100 / 2 / 1024) - 1 (already cranked) + 1 (for eos)) = 22
crank-clock, repeat=22

set-property, target-element-name="src", property-name="samplesperbuffer", property-value=4410, on-message=eos
seek, start=0.0, stop=1.0, rate=-1.0, flags=accurate+flush
crank-clock, expected-elapsed-time=0.0
crank-clock, repeat=10,  expected-elapsed-time=0.1

stop, on-message=eos;