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