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/*
* Copyright (C) 2022 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.bluetooth;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.os.Parcel;
import android.os.Parcelable;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
/**
* Represents the codec status (configuration and capability) for a Bluetooth
* Le Audio source device.
*
* {@see BluetoothLeAudio}
*/
public final class BluetoothLeAudioCodecStatus implements Parcelable {
/**
* Extra for the codec configuration intents of the individual profiles.
*
* This extra represents the current codec status of the Le Audio
* profile.
*/
public static final String EXTRA_LE_AUDIO_CODEC_STATUS =
"android.bluetooth.extra.LE_AUDIO_CODEC_STATUS";
private final @Nullable BluetoothLeAudioCodecConfig mCodecConfig;
private final @Nullable List<BluetoothLeAudioCodecConfig> mCodecsLocalCapabilities;
private final @Nullable List<BluetoothLeAudioCodecConfig> mCodecsSelectableCapabilities;
/**
* Represents the codec status for a Bluetooth LE Audio source device.
*
* @param codecConfig the current code configutration.
* @param codecsLocalCapabilities the local codecs capabilities.
* @param codecsSelectableCapabilities the selectable codecs capabilities.
*/
public BluetoothLeAudioCodecStatus(@Nullable BluetoothLeAudioCodecConfig codecConfig,
@NonNull List<BluetoothLeAudioCodecConfig> codecsLocalCapabilities,
@NonNull List<BluetoothLeAudioCodecConfig> codecsSelectableCapabilities) {
mCodecConfig = codecConfig;
mCodecsLocalCapabilities = codecsLocalCapabilities;
mCodecsSelectableCapabilities = codecsSelectableCapabilities;
}
private BluetoothLeAudioCodecStatus(Parcel in) {
mCodecConfig = in.readTypedObject(BluetoothLeAudioCodecConfig.CREATOR);
mCodecsLocalCapabilities = in.createTypedArrayList(BluetoothLeAudioCodecConfig.CREATOR);
mCodecsSelectableCapabilities =
in.createTypedArrayList(BluetoothLeAudioCodecConfig.CREATOR);
}
@Override
public boolean equals(@Nullable Object o) {
if (o instanceof BluetoothLeAudioCodecStatus) {
BluetoothLeAudioCodecStatus other = (BluetoothLeAudioCodecStatus) o;
return (Objects.equals(other.mCodecConfig, mCodecConfig)
&& sameCapabilities(other.mCodecsLocalCapabilities, mCodecsLocalCapabilities)
&& sameCapabilities(other.mCodecsSelectableCapabilities,
mCodecsSelectableCapabilities));
}
return false;
}
/**
* Checks whether two lists of capabilities contain same capabilities.
* The order of the capabilities in each list is ignored.
*
* @param c1 the first list of capabilities to compare
* @param c2 the second list of capabilities to compare
* @return {@code true} if both lists contain same capabilities
*/
private static boolean sameCapabilities(@Nullable List<BluetoothLeAudioCodecConfig> c1,
@Nullable List<BluetoothLeAudioCodecConfig> c2) {
if (c1 == null) {
return (c2 == null);
}
if (c2 == null) {
return false;
}
if (c1.size() != c2.size()) {
return false;
}
return c1.containsAll(c2);
}
/**
* Checks whether the codec config matches the selectable capabilities.
* Any parameters of the codec config with NONE value will be considered a wildcard matching.
*
* @param codecConfig the codec config to compare against
* @return {@code true} if the codec config matches, {@code false} otherwise
*/
public boolean isCodecConfigSelectable(@Nullable BluetoothLeAudioCodecConfig codecConfig) {
if (codecConfig == null) {
return false;
}
for (BluetoothLeAudioCodecConfig selectableConfig : mCodecsSelectableCapabilities) {
if (codecConfig.equals(selectableConfig)) {
return true;
}
}
return false;
}
/**
* Returns a hash based on the codec config and local capabilities.
*/
@Override
public int hashCode() {
return Objects.hash(mCodecConfig, mCodecsLocalCapabilities, mCodecsLocalCapabilities);
}
/**
* Returns a {@link String} that describes each BluetoothLeAudioCodecStatus parameter
* current value.
*/
@Override
public String toString() {
return "{mCodecConfig:" + mCodecConfig
+ ",mCodecsLocalCapabilities:" + mCodecsLocalCapabilities
+ ",mCodecsSelectableCapabilities:" + mCodecsSelectableCapabilities
+ "}";
}
/**
* @return 0
*/
@Override
public int describeContents() {
return 0;
}
/**
* {@link Parcelable.Creator} interface implementation.
*/
public static final @android.annotation.NonNull
Parcelable.Creator<BluetoothLeAudioCodecStatus> CREATOR =
new Parcelable.Creator<BluetoothLeAudioCodecStatus>() {
public BluetoothLeAudioCodecStatus createFromParcel(Parcel in) {
return new BluetoothLeAudioCodecStatus(in);
}
public BluetoothLeAudioCodecStatus[] newArray(int size) {
return new BluetoothLeAudioCodecStatus[size];
}
};
/**
* Flattens the object to a parcel.
*
* @param out The Parcel in which the object should be written
* @param flags Additional flags about how the object should be written
*/
@Override
public void writeToParcel(@NonNull Parcel out, int flags) {
out.writeTypedObject(mCodecConfig, flags);
out.writeTypedList(mCodecsLocalCapabilities);
out.writeTypedList(mCodecsSelectableCapabilities);
}
/**
* Returns the current codec configuration.
*
* @return The current codec config.
*/
public @Nullable BluetoothLeAudioCodecConfig getCodecConfig() {
return mCodecConfig;
}
/**
* Returns the codecs local capabilities.
*
* @return The list of codec config that supported by the local system.
*/
public @NonNull List<BluetoothLeAudioCodecConfig> getCodecLocalCapabilities() {
return (mCodecsLocalCapabilities == null)
? Collections.emptyList() : mCodecsLocalCapabilities;
}
/**
* Returns the codecs selectable capabilities.
*
* @return The list of codec config that supported by both of the local system and
* remote devices.
*/
public @NonNull List<BluetoothLeAudioCodecConfig> getCodecSelectableCapabilities() {
return (mCodecsSelectableCapabilities == null)
? Collections.emptyList() : mCodecsSelectableCapabilities;
}
}
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