client/cros/audio/cras_configs.py

# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""This module provides cras audio configs."""

INTERNAL_MIC_GAIN_100DB = {
        'chell': 500,
        'auron_yuna': -1000,
        'kevin': 0,
}

def get_proper_internal_mic_gain(board):
    """Return a proper internal mic gain.

    @param board: Board name.

    @returns: A number in 100 dB. E.g., 1000 is 10dB. This is in the same unit
              as cras_utils set_capture_gain. Returns None if there is no such
              entry.
    """
    return INTERNAL_MIC_GAIN_100DB.get(board, None)

INTERNAL_MIC_NODE = {
        ('nami', 'vayne'): 'FRONT_MIC',
}

def get_internal_mic_node(board, model, num_mics):
    """Return the expected internal microphone node for given board name and
       model name.

    @param board: board name of the DUT.
    @param model: model name of the DUT.
    @param mic_num: number of internal mics.

    @returns: The name of the expected internal microphone nodes.
    """
    if num_mics == 2:
        return 'FRONT_MIC'

    return INTERNAL_MIC_NODE.get((board, model), 'INTERNAL_MIC')

INTERNAL_MIC_NODES = {
        ('nami', 'vayne'): ['FRONT_MIC'],
}

def get_plugged_internal_mics(board, model, num_mics):
    """Return a list of all the plugged internal microphone nodes for given
       board name and model name.

    @param board: board name of the DUT.
    @param model: model name of the DUT.
    @param mic_num: number of internal mics.

    @returns: A list of all the plugged internal microphone nodes.
    """
    if num_mics == 2:
        return ['FRONT_MIC', 'REAR_MIC']

    return INTERNAL_MIC_NODES.get((board, model), ['INTERNAL_MIC'])