def _getStream(self, sampleRate, channels, blockSize):
"""Strict check for this format or create new
"""
label = getStreamLabel(sampleRate, channels, blockSize)
# try to retrieve existing stream of that name
if label in self:
pass
# on some systems more than one stream isn't supported so check
elif sys.platform == 'win32' and len(self):
raise exceptions.SoundFormatError(
"Tried to create audio stream {} but {} already exists "
"and {} doesn't support multiple portaudio streams"
.format(label, list(self.keys())[0], sys.platform)
)
else:
# create new stream
self[label] = _SoundStream(sampleRate, channels, blockSize,
device=defaultOutput)
return label, self[label]
def getStream(self, sampleRate, channels, blockSize):
"""Gets a stream of exact match or returns a new one
(if possible for the current operating system)
"""
label = getStreamLabel(sampleRate, channels, blockSize)
# try to retrieve existing stream of that name
if label in self.keys():
pass
# on some systems more than one stream isn't supported so check
elif sys.platform == 'win32' and len(self):
raise exceptions.SoundFormatError(
"Tried to create audio stream {} but {} already exists "
"and {} doesn't support multiple portaudio streams".format(
label,
self.keys()[0], sys.platform))
else:
# create new stream
self[label] = _SoundStream(sampleRate, channels, blockSize)
return label, self[label]
