def set_input_gain(self, gain):
"""Sets the system capture gain.
@param gain: the capture gain in db*100 (100 = 1dB)
"""
cras_utils.set_capture_gain(gain)
def cras_rms_test_setup():
"""Setups for the cras_rms_tests.
To make sure the line_out-to-mic_in path is all green.
"""
# TODO(owenlin): Now, the nodes are choosed by chrome.
# We should do it here.
cras_utils.set_system_volume(_DEFAULT_PLAYBACK_VOLUME)
cras_utils.set_selected_output_node_volume(_DEFAULT_PLAYBACK_VOLUME)
cras_utils.set_capture_gain(_DEFAULT_CAPTURE_GAIN)
cras_utils.set_system_mute(False)
cras_utils.set_capture_mute(False)