def get_playback_mute(self, ch):
if ch >= self.info['playback-channels']:
raise ValueError('Invalid argument for playback channel')
return EftPlayback.get_param(self, 'mute', ch)
def set_playback_gain(self, ch, val):
if ch >= self.info['playback-channels']:
raise ValueError('Invalid argument for playback channel')
EftPlayback.set_param(self, 'gain', ch, val)
