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"""PyAudio Mac Core Stream Info Tests."""
import os
import unittest
import sys
import pyaudio
# To skip tests requiring hardware, set this environment variable:
SKIP_HW_TESTS = 'PYAUDIO_SKIP_HW_TESTS' in os.environ
# If unset, defaults to default devices.
INPUT_DEVICE_INDEX = os.environ.get('PYAUDIO_INPUT_DEVICE_INDEX', None)
OUTPUT_DEVICE_INDEX = os.environ.get('PYAUDIO_OUTPUT_DEVICE_INDEX', None)
@unittest.skipIf('darwin' not in sys.platform, 'macOS-only test.')
class MacCoreStreamInfoTests(unittest.TestCase):
def test_getters(self):
channel_map = (1, 0)
stream_info = pyaudio.PaMacCoreStreamInfo(
flags=pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice,
channel_map=channel_map)
self.assertEqual(stream_info.channel_map, channel_map)
self.assertEqual(stream_info.flags,
pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice)
def test_default(self):
stream_info = pyaudio.PaMacCoreStreamInfo()
self.assertEqual(stream_info.channel_map, None)
self.assertEqual(stream_info.flags,
pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice)
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_macos_channel_map(self):
# reverse: R-L stereo
channel_map = (1, 0)
stream_info = pyaudio.PaMacCoreStreamInfo(
flags=pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice, # default
channel_map=channel_map)
self.assertEqual(stream_info.flags,
pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice)
self.assertEqual(stream_info.channel_map, channel_map)
p = pyaudio.PyAudio()
stream = p.open(
format=p.get_format_from_width(2),
channels=2,
rate=44100,
output=True,
output_host_api_specific_stream_info=stream_info,
start=False)
# Make sure portaudio no longer depends on state inside this object
# once the stream is initialized.
del stream_info
self.assertFalse(stream.is_active())
self.assertTrue(stream.is_stopped())
stream.start_stream()
self.assertTrue(stream.is_active())
self.assertFalse(stream.is_stopped())
stream.stop_stream()
self.assertFalse(stream.is_active())
self.assertTrue(stream.is_stopped())
stream.close()
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_macos_inline_stream_info(self):
p = pyaudio.PyAudio()
stream = p.open(
format=p.get_format_from_width(2),
channels=2,
rate=44100,
output=True,
# Instantiate inline, so PaMacCoreStreamInfo instance could get GCed
# subsequently. Ensure the stream still works.
output_host_api_specific_stream_info=pyaudio.PaMacCoreStreamInfo(
flags=pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice, # default
channel_map=(1, 0)), # reverse: R-L stereo
start=False)
self.assertFalse(stream.is_active())
self.assertTrue(stream.is_stopped())
stream.start_stream()
self.assertTrue(stream.is_active())
self.assertFalse(stream.is_stopped())
stream.stop_stream()
self.assertFalse(stream.is_active())
self.assertTrue(stream.is_stopped())
stream.close()
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