import unittest import sh import wave import contextlib def calc_audio_duration(fname): with contextlib.closing(wave.open(fname, 'r')) as f: frames = f.getnframes() rate = f.getframerate() duration = frames / float(rate) f.close() return duration class Qaudio(unittest.TestCase): params = None __resultlist = None # resultlist is a python list of python dictionaries __dtmf_secuence = ["1", "3", "5", "7", "9"] def __init__(self, testname, testfunc, varlist): self.params = varlist super(Qaudio, self).__init__(testfunc) self._testMethodDoc = testname self.__resultlist = [] def execute(self): # analize audio file recordtime = calc_audio_duration("/var/lib/hwtest-files/dtmf-13579.wav") + 0.15 # previous play to estabilise audio lines p1 = sh.aplay("/var/lib/hwtest-files/dtmf-13579.wav", _bg=True) p2 = sh.arecord("-r", 8000, "-d", recordtime, "/mnt/station_ramdisk/recorded.wav", _bg=True) p1.wait() p2.wait() # play and record p1 = sh.aplay("/var/lib/hwtest-files/dtmf-13579.wav", _bg=True) p2 = sh.arecord("-r", 8000, "-d", recordtime, "/mnt/station_ramdisk/recorded.wav", _bg=True) p1.wait() p2.wait() if p1.exit_code == 0 and p2.exit_code == 0: p = sh.multimon("-t", "wav", "-a", "DTMF", "/mnt/station_ramdisk/recorded.wav", "-q") if p.exit_code == 0: lines = p.stdout.decode('ascii').splitlines() self.__dtmf_secuence_result = [] for li in lines: if li.split(" ")[0] == "DTMF:": self.__dtmf_secuence_result.append(li.split(" ")[1]) # compare original and processed dtmf sequence if len(self.__dtmf_secuence) == len(self.__dtmf_secuence_result): for a, b in zip(self.__dtmf_secuence, self.__dtmf_secuence_result): if a != b: self.fail("failed: sent and received DTMF sequence don't match.") else: self.fail("failed: received DTMF sequence is shorter than expected.") else: self.fail("failed: unable to use multimon command.") else: self.fail("failed: unable to play/record audio.") def getresults(self): return self.__resultlist def gettextresult(self): return ""