def test_Mix(self):
self._sample_1.extract_channel(0)
self._sample_2.extract_channel(0)
formatter1 = ChannelFormatter(self._sample_1.get_channel(0))
formatter1.set_framerate(16000)
formatter1.set_sampwidth(2)
formatter1.convert()
formatter2 = ChannelFormatter(self._sample_2.get_channel(0))
formatter2.set_framerate(16000)
formatter2.set_sampwidth(2)
formatter2.convert()
mixer = ChannelsMixer()
mixer.append_channel(formatter1.get_channel())
mixer.append_channel(formatter2.get_channel())
mixer.norm_length()
self.assertEqual(mixer.get_channel(0).get_nframes(), mixer.get_channel(1).get_nframes())
newchannel = mixer.mix()
self.assertEqual(newchannel.get_nframes(), mixer.get_channel(0).get_nframes())
self.assertEqual(newchannel.get_nframes(), mixer.get_channel(1).get_nframes())
parser.add_argument("-w", metavar="file", nargs='+', required=True, help='Audio Input file name')
parser.add_argument("-o", metavar="file", required=True, help='Audio Output file name')
# ----------------------------------------------------------------------------
if len(sys.argv) <= 1:
sys.argv.append('-h')
args = parser.parse_args()
# ----------------------------------------------------------------------------
mixer = ChannelsMixer()
for inputFile in args.w:
audio = audiodata.open(inputFile)
idx = audio.extract_channel(0)
mixer.append_channel(audio.get_channel(idx))
newchannel = mixer.mix()
# Save the converted channel
audio_out = AudioPCM()
audio_out.append_channel( newchannel )
audiodata.save( args.o, audio_out )
# ----------------------------------------------------------------------------
