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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.annotation.SystemApi;
import android.os.Parcel;
import android.os.Parcelable;
/**
* A class representing the media metadata information defined in the Basic Audio Profile.
*
* @hide
*/
@SystemApi
public final class BluetoothLeAudioContentMetadata implements Parcelable {
private final String mProgramInfo;
private final String mLanguage;
private final byte[] mRawMetadata;
private BluetoothLeAudioContentMetadata(String programInfo, String language,
byte[] rawMetadata) {
mProgramInfo = programInfo;
mLanguage = language;
mRawMetadata = rawMetadata;
}
/**
* Get the title and/or summary of Audio Stream content in UTF-8 format.
*
* @return title and/or summary of Audio Stream content in UTF-8 format, null if this metadata
* does not exist
* @hide
*/
@SystemApi
public @Nullable String getProgramInfo() {
return mProgramInfo;
}
/**
* Get language of the audio stream in 3-byte, lower case language code as defined in ISO 639-3.
*
* @return ISO 639-3 formatted language code, null if this metadata does not exist
* @hide
*/
@SystemApi
public @Nullable String getLanguage() {
return mLanguage;
}
/**
* Get the raw bytes of stream metadata in Bluetooth LTV format as defined in the Generic Audio
* section of <a href="https://www.bluetooth.com/specifications/assigned-numbers/">Bluetooth Assigned Numbers</a>,
* including metadata that was not covered by the getter methods in this class
*
* @return raw bytes of stream metadata in Bluetooth LTV format
*/
public @NonNull byte[] getRawMetadata() {
return mRawMetadata;
}
/**
* {@inheritDoc}
* @hide
*/
@Override
public int describeContents() {
return 0;
}
/**
* {@inheritDoc}
* @hide
*/
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeString(mProgramInfo);
out.writeString(mLanguage);
out.writeInt(mRawMetadata.length);
out.writeByteArray(mRawMetadata);
}
/**
* A {@link Parcelable.Creator} to create {@link BluetoothLeAudioContentMetadata} from parcel.
* @hide
*/
@SystemApi
public static final @NonNull Parcelable.Creator<BluetoothLeAudioContentMetadata> CREATOR =
new Parcelable.Creator<BluetoothLeAudioContentMetadata>() {
public @NonNull BluetoothLeAudioContentMetadata createFromParcel(
@NonNull Parcel in) {
final String programInfo = in.readString();
final String language = in.readString();
final int rawMetadataLength = in.readInt();
byte[] rawMetadata = new byte[rawMetadataLength];
in.readByteArray(rawMetadata);
return new BluetoothLeAudioContentMetadata(programInfo, language, rawMetadata);
}
public @NonNull BluetoothLeAudioContentMetadata[] newArray(int size) {
return new BluetoothLeAudioContentMetadata[size];
}
};
/**
* Construct a {@link BluetoothLeAudioContentMetadata} from raw bytes.
*
* The byte array will be parsed and values for each getter will be populated
*
* Raw metadata cannot be set using builder in order to maintain raw bytes and getter value
* consistency
*
* @param rawBytes raw bytes of stream metadata in Bluetooth LTV format
* @return parsed {@link BluetoothLeAudioContentMetadata} object
* @throws IllegalArgumentException if <var>rawBytes</var> is null or when the raw bytes cannot
* be parsed to build the object
* @hide
*/
@SystemApi
public static @NonNull BluetoothLeAudioContentMetadata fromRawBytes(@NonNull byte[] rawBytes) {
if (rawBytes == null) {
throw new IllegalArgumentException("Raw bytes cannot be null");
}
return null;
}
/**
* Builder for {@link BluetoothLeAudioContentMetadata}.
* @hide
*/
@SystemApi
public static final class Builder {
private String mProgramInfo = null;
private String mLanguage = null;
private byte[] mRawMetadata = null;
/**
* Create an empty builder
*
* @hide
*/
@SystemApi
public Builder() {}
/**
* Create a builder with copies of information from original object.
*
* @param original original object
* @hide
*/
@SystemApi
public Builder(@NonNull BluetoothLeAudioContentMetadata original) {
mProgramInfo = original.getProgramInfo();
mLanguage = original.getLanguage();
mRawMetadata = original.getRawMetadata();
}
/**
* Set the title and/or summary of Audio Stream content in UTF-8 format.
*
* @param programInfo title and/or summary of Audio Stream content in UTF-8 format, null
* if this metadata does not exist
* @return this builder
* @hide
*/
@SystemApi
public @NonNull Builder setProgramInfo(@Nullable String programInfo) {
mProgramInfo = programInfo;
return this;
}
/**
* Set language of the audio stream in 3-byte, lower case language code as defined in
* ISO 639-3.
*
* @return ISO 639-3 formatted language code, null if this metadata does not exist
* @hide
*/
@SystemApi
public @NonNull Builder setLanguage(@Nullable String language) {
mLanguage = language;
return this;
}
/**
* Build {@link BluetoothLeAudioContentMetadata}.
*
* @return constructed {@link BluetoothLeAudioContentMetadata}
* @throws IllegalArgumentException if the object cannot be built
* @hide
*/
@SystemApi
public @NonNull BluetoothLeAudioContentMetadata build() {
if (mRawMetadata == null) {
mRawMetadata = new byte[0];
}
return new BluetoothLeAudioContentMetadata(mProgramInfo, mLanguage, mRawMetadata);
}
}
}
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