110 lines
3.9 KiB
Java
110 lines
3.9 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.media;
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import android.media.AudioSystem;
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/**
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* The AudioDevicePort is a specialized type of AudioPort
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* describing an input (e.g microphone) or output device (e.g speaker)
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* of the system.
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* An AudioDevicePort is an AudioPort controlled by the audio HAL, almost always a physical
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* device at the boundary of the audio system.
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* In addition to base audio port attributes, the device descriptor contains:
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* - the device type (e.g AudioManager.DEVICE_OUT_SPEAKER)
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* - the device address (e.g MAC adddress for AD2P sink).
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* @see AudioPort
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* @hide
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*/
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public class AudioDevicePort extends AudioPort {
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private final int mType;
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private final String mAddress;
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AudioDevicePort(AudioHandle handle, String deviceName,
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int[] samplingRates, int[] channelMasks, int[] channelIndexMasks,
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int[] formats, AudioGain[] gains, int type, String address) {
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super(handle,
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(AudioManager.isInputDevice(type) == true) ?
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AudioPort.ROLE_SOURCE : AudioPort.ROLE_SINK,
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deviceName, samplingRates, channelMasks, channelIndexMasks, formats, gains);
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mType = type;
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mAddress = address;
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}
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/**
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* Get the device type (e.g AudioManager.DEVICE_OUT_SPEAKER)
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*/
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public int type() {
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return mType;
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}
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/**
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* Get the device address. Address format varies with the device type.
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* - USB devices ({@link AudioManager#DEVICE_OUT_USB_DEVICE},
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* {@link AudioManager#DEVICE_IN_USB_DEVICE}) use an address composed of the ALSA card number
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* and device number: "card=2;device=1"
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* - Bluetooth devices ({@link AudioManager#DEVICE_OUT_BLUETOOTH_SCO},
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* {@link AudioManager#DEVICE_OUT_BLUETOOTH_SCO}, {@link AudioManager#DEVICE_OUT_BLUETOOTH_A2DP})
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* use the MAC address of the bluetooth device in the form "00:11:22:AA:BB:CC" as reported by
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* {@link BluetoothDevice#getAddress()}.
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* - Deivces that do not have an address will indicate an empty string "".
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*/
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public String address() {
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return mAddress;
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}
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/**
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* Build a specific configuration of this audio device port for use by methods
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* like AudioManager.connectAudioPatch().
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*/
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public AudioDevicePortConfig buildConfig(int samplingRate, int channelMask, int format,
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AudioGainConfig gain) {
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return new AudioDevicePortConfig(this, samplingRate, channelMask, format, gain);
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}
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@Override
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public boolean equals(Object o) {
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if (o == null || !(o instanceof AudioDevicePort)) {
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return false;
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}
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AudioDevicePort other = (AudioDevicePort)o;
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if (mType != other.type()) {
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return false;
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}
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if (mAddress == null && other.address() != null) {
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return false;
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}
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if (!mAddress.equals(other.address())) {
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return false;
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}
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return super.equals(o);
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}
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@Override
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public String toString() {
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String type = (mRole == ROLE_SOURCE ?
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AudioSystem.getInputDeviceName(mType) :
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AudioSystem.getOutputDeviceName(mType));
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return "{" + super.toString()
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+ ", mType: " + type
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+ ", mAddress: " + mAddress
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+ "}";
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}
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}
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