| /* |
| * 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.net.wifi.aware; |
| |
| import android.annotation.IntRange; |
| import android.net.wifi.ScanResult; |
| import android.net.wifi.WifiAnnotations; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| |
| import androidx.annotation.NonNull; |
| |
| import java.util.Objects; |
| |
| /** |
| * Wi-Fi Aware data-path channel information. The information can be extracted from the |
| * {@link WifiAwareNetworkInfo} using {@link WifiAwareNetworkInfo#getChannelInfoList()} ()}. |
| * Wi-Fi Aware data-path channel information includes the channel frequency, bandwidth and num of |
| * the spatial streams. |
| */ |
| public final class WifiAwareChannelInfo implements Parcelable { |
| private final int mChannelFreq; |
| private final int mChannelBandwidth; |
| private final int mNumSpatialStreams; |
| |
| /** @hide **/ |
| public WifiAwareChannelInfo(int channelFreq, int channelBandwidth, int numSpatialStreams) { |
| mChannelFreq = channelFreq; |
| mChannelBandwidth = channelBandwidth; |
| mNumSpatialStreams = numSpatialStreams; |
| } |
| |
| /** |
| * Get the channel frequency in MHZ used by the Aware data path |
| * @return An integer represent the frequency of the channel in MHZ. |
| */ |
| @IntRange(from = 0) |
| public int getChannelFrequencyMhz() { |
| return mChannelFreq; |
| } |
| |
| /** |
| * Get the channel bandwidth used by the Aware data path |
| * @return one of {@link ScanResult#CHANNEL_WIDTH_20MHZ}, |
| * {@link ScanResult#CHANNEL_WIDTH_40MHZ}, |
| * {@link ScanResult#CHANNEL_WIDTH_80MHZ}, {@link ScanResult#CHANNEL_WIDTH_160MHZ} |
| * or {@link ScanResult #CHANNEL_WIDTH_80MHZ_PLUS_MHZ}. |
| */ |
| @IntRange(from = 0) |
| public @WifiAnnotations.ChannelWidth int getChannelBandwidth() { |
| return mChannelBandwidth; |
| } |
| |
| /** |
| * Get the number of the spatial streams used by the Aware data path |
| * @return An integer represent number of the spatial streams are using in this channel. |
| */ |
| @IntRange(from = 0) |
| public int getSpatialStreamCount() { |
| return mNumSpatialStreams; |
| } |
| |
| private WifiAwareChannelInfo(Parcel in) { |
| mChannelFreq = in.readInt(); |
| mChannelBandwidth = in.readInt(); |
| mNumSpatialStreams = in.readInt(); |
| } |
| |
| public static final @NonNull Creator<WifiAwareChannelInfo> CREATOR = |
| new Creator<WifiAwareChannelInfo>() { |
| @Override |
| public WifiAwareChannelInfo createFromParcel(Parcel in) { |
| return new WifiAwareChannelInfo(in); |
| } |
| |
| @Override |
| public WifiAwareChannelInfo[] newArray(int size) { |
| return new WifiAwareChannelInfo[size]; |
| } |
| }; |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(@NonNull Parcel dest, int flags) { |
| dest.writeInt(mChannelFreq); |
| dest.writeInt(mChannelBandwidth); |
| dest.writeInt(mNumSpatialStreams); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder builder = new StringBuilder().append("{") |
| .append(".channelFreq = ").append(mChannelFreq) |
| .append(", .channelBandwidth = ").append(mChannelBandwidth) |
| .append(", .numSpatialStreams = ").append(mNumSpatialStreams) |
| .append("}"); |
| return builder.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (!(obj instanceof WifiAwareChannelInfo)) { |
| return false; |
| } |
| |
| WifiAwareChannelInfo lhs = (WifiAwareChannelInfo) obj; |
| return mChannelFreq == lhs.mChannelFreq |
| && mChannelBandwidth == lhs.mChannelBandwidth |
| && mNumSpatialStreams == lhs.mNumSpatialStreams; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mChannelFreq, mChannelBandwidth, mNumSpatialStreams); |
| } |
| } |