java/com/android/pump/db/Audio.java

/*
 * Copyright 2018 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 com.android.pump.db;

import android.net.Uri;

import androidx.annotation.AnyThread;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

@AnyThread
public class Audio {
    private final long mId;
    private final Uri mUri;
    private final String mMimeType;

    // TODO(b/123706949) Lock mutable fields to ensure consistent updates
    private String mTitle;
    private Artist mArtist;
    private Album mAlbum;
    private boolean mLoaded;

    Audio(long id, @NonNull Uri uri, @NonNull String mimeType) {
        mId = id;
        mUri = uri;
        mMimeType = mimeType;
    }

    public long getId() {
        return mId;
    }

    public @NonNull Uri getUri() {
        return mUri;
    }

    public @NonNull String getMimeType() {
        return mMimeType;
    }

    public @NonNull String getTitle() {
        if (mTitle != null) {
            return mTitle;
        }
        return mUri.getLastPathSegment();
    }

    public @Nullable Artist getArtist() {
        return mArtist;
    }

    public @Nullable Album getAlbum() {
        return mAlbum;
    }

    boolean setTitle(@NonNull String title) {
        if (title.equals(mTitle)) {
            return false;
        }
        mTitle = title;
        return true;
    }

    boolean setArtist(@NonNull Artist artist) {
        if (artist.equals(mArtist)) {
            return false;
        }
        mArtist = artist;
        return true;
    }

    boolean setAlbum(@NonNull Album album) {
        if (album.equals(mAlbum)) {
            return false;
        }
        mAlbum = album;
        return true;
    }

    boolean isLoaded() {
        return mLoaded;
    }

    void setLoaded() {
        mLoaded = true;
    }

    @Override
    public final boolean equals(@Nullable Object obj) {
        return obj instanceof Audio && mId == ((Audio) obj).mId;
    }

    @Override
    public final int hashCode() {
        return (int) (mId ^ (mId >>> 32));
    }
}