| /* |
| * Copyright 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.annotation.SystemApi; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * This class contains the subgroup level information as defined in the BASE structure of Basic |
| * Audio profile. |
| * |
| * @hide |
| */ |
| @SystemApi |
| public final class BluetoothLeBroadcastSubgroup implements Parcelable { |
| private final long mCodecId; |
| private final BluetoothLeAudioCodecConfigMetadata mCodecSpecificConfig; |
| private final BluetoothLeAudioContentMetadata mContentMetadata; |
| private final List<BluetoothLeBroadcastChannel> mChannels; |
| |
| private BluetoothLeBroadcastSubgroup(long codecId, |
| BluetoothLeAudioCodecConfigMetadata codecSpecificConfig, |
| BluetoothLeAudioContentMetadata contentMetadata, |
| List<BluetoothLeBroadcastChannel> channels) { |
| mCodecId = codecId; |
| mCodecSpecificConfig = codecSpecificConfig; |
| mContentMetadata = contentMetadata; |
| mChannels = channels; |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object o) { |
| if (!(o instanceof BluetoothLeBroadcastSubgroup)) { |
| return false; |
| } |
| final BluetoothLeBroadcastSubgroup other = (BluetoothLeBroadcastSubgroup) o; |
| return mCodecId == other.getCodecId() |
| && mCodecSpecificConfig.equals(other.getCodecSpecificConfig()) |
| && mContentMetadata.equals(other.getContentMetadata()) |
| && mChannels.equals(other.getChannels()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mCodecId, mCodecSpecificConfig, mContentMetadata, mChannels); |
| } |
| |
| /** |
| * Get the codec ID field as defined by the Basic Audio Profile. |
| * |
| * The codec ID field has 5 octets, with |
| * - Octet 0: Coding_Format as defined in Bluetooth Assigned Numbers |
| * - Octet 1-2: Company ID as defined in Bluetooth Assigned Numbers |
| * Shall be 0x0000 if octet 0 != 0xFF |
| * - Octet 3-4: Vendor-specific codec ID |
| * Shall be 0x0000 if octet 0 != 0xFF |
| * |
| * @return 5-byte codec ID field in Java long format |
| * @hide |
| */ |
| @SystemApi |
| public long getCodecId() { |
| return mCodecId; |
| } |
| |
| /** |
| * Get codec specific config metadata for this subgroup. |
| * |
| * @return codec specific config metadata for this subgroup |
| * @hide |
| */ |
| @SystemApi |
| @NonNull |
| public BluetoothLeAudioCodecConfigMetadata getCodecSpecificConfig() { |
| return mCodecSpecificConfig; |
| } |
| |
| /** |
| * Get content metadata for this Broadcast Source subgroup. |
| * |
| * @return content metadata for this Broadcast Source subgroup |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull BluetoothLeAudioContentMetadata getContentMetadata() { |
| return mContentMetadata; |
| } |
| |
| /** |
| * Indicate if Broadcast Sink should have a preferred Broadcast Channel (BIS). |
| * |
| * Only used by Broadcast Assistant and Sink. Ignored by Broadcast Source |
| * |
| * @return true if Broadcast Sink has at least one preferred Broadcast Channel (BIS) as |
| * indicated by {@link BluetoothLeBroadcastChannel#isSelected()} |
| * @hide |
| */ |
| @SystemApi |
| public boolean hasChannelPreference() { |
| return mChannels.stream().anyMatch(BluetoothLeBroadcastChannel::isSelected); |
| } |
| |
| /** |
| * Get list of Broadcast Channels included in this Broadcast subgroup. |
| * |
| * Each Broadcast Channel represents a Broadcast Isochronous Stream (BIS) |
| * |
| * A Broadcast subgroup should contain at least 1 Broadcast Channel |
| * |
| * @return list of Broadcast Channels included in this Broadcast subgroup |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull List<BluetoothLeBroadcastChannel> getChannels() { |
| return mChannels; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @hide |
| */ |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @hide |
| */ |
| @Override |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeLong(mCodecId); |
| out.writeTypedObject(mCodecSpecificConfig, 0); |
| out.writeTypedObject(mContentMetadata, 0); |
| out.writeTypedList(mChannels); |
| } |
| |
| /** |
| * A {@link Parcelable.Creator} to create {@link BluetoothLeBroadcastSubgroup} from parcel. |
| * @hide |
| */ |
| @SystemApi |
| public static final @NonNull Parcelable.Creator<BluetoothLeBroadcastSubgroup> CREATOR = |
| new Parcelable.Creator<BluetoothLeBroadcastSubgroup>() { |
| public @NonNull BluetoothLeBroadcastSubgroup createFromParcel(@NonNull Parcel in) { |
| Builder builder = new Builder(); |
| builder.setCodecId(in.readLong()); |
| builder.setCodecSpecificConfig(in.readTypedObject( |
| BluetoothLeAudioCodecConfigMetadata.CREATOR)); |
| builder.setContentMetadata( |
| in.readTypedObject(BluetoothLeAudioContentMetadata.CREATOR)); |
| List<BluetoothLeBroadcastChannel> channels = new ArrayList<>(); |
| in.readTypedList(channels, BluetoothLeBroadcastChannel.CREATOR); |
| for (BluetoothLeBroadcastChannel channel : channels) { |
| builder.addChannel(channel); |
| } |
| return builder.build(); |
| } |
| |
| public @NonNull BluetoothLeBroadcastSubgroup[] newArray(int size) { |
| return new BluetoothLeBroadcastSubgroup[size]; |
| } |
| }; |
| |
| private static final int UNKNOWN_VALUE_PLACEHOLDER = -1; |
| |
| /** |
| * Builder for {@link BluetoothLeBroadcastSubgroup}. |
| * @hide |
| */ |
| @SystemApi |
| public static final class Builder { |
| private long mCodecId = UNKNOWN_VALUE_PLACEHOLDER; |
| private BluetoothLeAudioCodecConfigMetadata mCodecSpecificConfig = null; |
| private BluetoothLeAudioContentMetadata mContentMetadata = null; |
| private List<BluetoothLeBroadcastChannel> mChannels = new ArrayList<>(); |
| |
| /** |
| * Create an empty constructor. |
| * |
| * @hide |
| */ |
| @SystemApi |
| public Builder() {} |
| |
| /** |
| * Create a builder with copies of information from original object. |
| * |
| * @param original original object |
| * @hide |
| */ |
| @SystemApi |
| public Builder(@NonNull BluetoothLeBroadcastSubgroup original) { |
| mCodecId = original.getCodecId(); |
| mCodecSpecificConfig = original.getCodecSpecificConfig(); |
| mContentMetadata = original.getContentMetadata(); |
| mChannels = original.getChannels(); |
| } |
| |
| /** |
| * Set the codec ID field as defined by the Basic Audio Profile. |
| * |
| * The codec ID field has 5 octets, with |
| * - Octet 0: Coding_Format as defined in Bluetooth Assigned Numbers |
| * - Octet 1-2: Company ID as defined in Bluetooth Assigned Numbers |
| * Shall be 0x0000 if octet 0 != 0xFF |
| * - Octet 3-4: Vendor-specific codec ID |
| * Shall be 0x0000 if octet 0 != 0xFF |
| * |
| * @param codecId 5-byte codec ID field in Java long format |
| * @return this builder |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull Builder setCodecId(long codecId) { |
| mCodecId = codecId; |
| return this; |
| } |
| |
| /** |
| * Set codec specific config metadata for this subgroup. |
| * |
| * @param codecSpecificConfig codec specific config metadata for this subgroup |
| * @throws {@link NullPointerException} if codecSpecificConfig is null |
| * @return this builder |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull Builder setCodecSpecificConfig( |
| @NonNull BluetoothLeAudioCodecConfigMetadata codecSpecificConfig) { |
| Objects.requireNonNull(codecSpecificConfig, "codecSpecificConfig cannot be null"); |
| mCodecSpecificConfig = codecSpecificConfig; |
| return this; |
| } |
| |
| /** |
| * Set content metadata for this Broadcast Source subgroup. |
| * |
| * @param contentMetadata content metadata for this Broadcast Source subgroup |
| * @throws NullPointerException if contentMetadata is null |
| * @return this builder |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull Builder setContentMetadata( |
| @NonNull BluetoothLeAudioContentMetadata contentMetadata) { |
| Objects.requireNonNull(contentMetadata, "contentMetadata cannot be null"); |
| mContentMetadata = contentMetadata; |
| return this; |
| } |
| |
| /** |
| * Add a Broadcast Channel to this Broadcast subgroup. |
| * |
| * Each Broadcast Channel represents a Broadcast Isochronous Stream (BIS) |
| * |
| * A Broadcast subgroup should contain at least 1 Broadcast Channel |
| * |
| * @param channel a Broadcast Channel to be added to this Broadcast subgroup |
| * @throws NullPointerException if channel is null |
| * @return this builder |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull Builder addChannel(@NonNull BluetoothLeBroadcastChannel channel) { |
| Objects.requireNonNull(channel, "channel cannot be null"); |
| mChannels.add(channel); |
| return this; |
| } |
| |
| /** |
| * Clear channel list so that one can reset the builder after create it from an existing |
| * object. |
| * |
| * @return this builder |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull Builder clearChannel() { |
| mChannels.clear(); |
| return this; |
| } |
| |
| /** |
| * Build {@link BluetoothLeBroadcastSubgroup}. |
| * |
| * @return constructed {@link BluetoothLeBroadcastSubgroup} |
| * @throws NullPointerException if {@link NonNull} items are null |
| * @throws IllegalArgumentException if the object cannot be built |
| * @hide |
| */ |
| @SystemApi |
| public @NonNull BluetoothLeBroadcastSubgroup build() { |
| Objects.requireNonNull(mCodecSpecificConfig, "CodecSpecificConfig is null"); |
| Objects.requireNonNull(mContentMetadata, "ContentMetadata is null"); |
| if (mChannels.isEmpty()) { |
| throw new IllegalArgumentException("Must have at least one channel"); |
| } |
| return new BluetoothLeBroadcastSubgroup(mCodecId, mCodecSpecificConfig, |
| mContentMetadata, mChannels); |
| } |
| } |
| } |