def _play_sinewave(self, pitch, amplitude=5000, duration=1):
""" Create a Csound score to play a sine wave. """
self.orchlines = []
self.scorelines = []
self.instrlist = []
try:
pitch = abs(float(pitch))
amplitude = abs(float(amplitude))
duration = abs(float(duration))
except ValueError:
logging.error('bad args to _play_sinewave')
return
self._prepare_sinewave(pitch, amplitude, duration)
path = os.path.join(self.activity.get_activity_root(), 'instance',
'tmp.csd')
# Create a csound file from the score.
self._audio_write(path)
# Play the csound file.
check_output(['csound', path], 'call to csound failed?')
def _play_sinewave(self, pitch, amplitude=5000, duration=1):
""" Create a Csound score to play a sine wave. """
self.orchlines = []
self.scorelines = []
self.instrlist = []
try:
pitch = abs(float(pitch))
amplitude = abs(float(amplitude))
duration = abs(float(duration))
except ValueError:
logging.error('bad args to _play_sinewave')
return
self._prepare_sinewave(pitch, amplitude, duration)
path = os.path.join(self.activity.get_activity_root(), 'instance',
'tmp.csd')
# Create a csound file from the score.
self._audio_write(path)
# Play the csound file.
check_output(['csound', path], 'call to csound failed?')
def _get_hardware():
''' Determine whether we are using XO 1.0, 1.5, ... or 'unknown'
hardware '''
version = _get_dmi('product_version')
# product = _get_dmi('product_name')
if version is None:
hwinfo_path = '/bin/olpc-hwinfo'
if os.path.exists(hwinfo_path) and os.access(hwinfo_path, os.X_OK):
model = check_output([hwinfo_path, 'model'], 'unknown hardware')
version = model.strip()
if version == '1':
return XO1
elif version == '1.5':
return XO15
elif version == '1.75':
return XO175
elif version == '4':
return XO4
else:
return UNKNOWN