chameleond/utils/bluetooth_a2dp.py

# -*- coding: utf-8 -*-
# Copyright 2018 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""This module provides emulation of bluetooth A2DP devices."""

from __future__ import print_function

from chameleond.devices import bluetooth_hid_flow
from chameleond.utils import bluetooth_hid

from .bluetooth_peripheral_kit import PeripheralKit
from .bluetooth_rn52 import RN52


# TODO(npoojary): Fix inheritance.
# Probably needs a separate BluetoothPeripheral
# class for both BluetoothHID and BluetoothA2DPx
# to inherit kit interface from.
class BluetoothA2DPSink(bluetooth_hid.BluetoothHID):
    """A bluetooth A2DP sink emulator class."""

    def __init__(self, authentication_mode, kit_impl):
        """Initialization of BluetoothA2DPSink

        Args:
          authentication_mode: the authentication mode
          kit_impl: the implementation of a Bluetooth HID peripheral kit to use
        """
        super(BluetoothA2DPSink, self).__init__(
            PeripheralKit.A2DP_SINK, authentication_mode, kit_impl
        )


# TODO(npoojary): Fix inheritance.
# Again using BluetoothHIDFlow for IsDetected(), FindAndSetTty() etc.
# These probably need to go into a common serial device class.
class BluetoothA2DPSinkFlow(
    BluetoothA2DPSink, bluetooth_hid_flow.BluetoothHIDFlow
):
    """A flow object that emulates a Bluetooth A2DP sink."""

    DRIVER = RN52.DRIVER

    def __init__(self, port_id, usb_ctrl):
        """Initializes a BluetoothA2DPSinkFlow object.

        Args:
          port_id: the port id that represents the type of port used.
          usb_ctrl: a USBController object that BluetoothA2DPFlow references to.
        """
        BluetoothA2DPSink.__init__(self, PeripheralKit.SSP_JUST_WORK_MODE, RN52)
        bluetooth_hid_flow.BluetoothHIDFlow.__init__(
            self,
            port_id,
            "BluetoothBR/EDR",
            usb_ctrl,
            RN52.USB_VID,
            RN52.USB_PID,
            RN52.KNOWN_DEVICE_SET,
        )