com.classiqo.nativeandroid_32bitz.utils.MediaIDHelper.java Source code

Introduction

Here is the source code for com.classiqo.nativeandroid_32bitz.utils.MediaIDHelper.java

Source

/*
 * Copyright (C) 2014 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.classiqo.nativeandroid_32bitz.utils;

import android.content.Context;
import android.media.session.MediaController;
import android.support.annotation.FractionRes;
import android.support.annotation.NonNull;
import android.support.v4.app.FragmentActivity;
import android.support.v4.media.MediaBrowserCompat;
import android.support.v4.media.session.MediaControllerCompat;
import android.text.TextUtils;

import java.util.Arrays;

/**
 * Created by JsFish-DT on 2017-03-07.
 */
public class MediaIDHelper {
    public static final String MEDIA_ID_EMPTY_ROOT = "__EMPTY_ROOT__";
    public static final String MEDIA_ID_ROOT = "__ROOT__";
    public static final String MEDIA_ID_MUSICS_BY_GENRE = "__BY_GNERE__";
    public static final String MEDIA_ID_MUSICS_BY_SEARCH = "__BY_SEARCH__";

    private static final char CATEGORY_SEPARATOR = '/';
    private static final char LEAF_SEPARATOR = '|';

    public static String createMediaID(String musicID, String... categories) {
        StringBuilder sb = new StringBuilder();

        if (categories != null) {
            for (int i = 0; i < categories.length; i++) {
                if (!isValidCategory(categories[i])) {
                    throw new IllegalArgumentException("Invalid categoty" + categories[0]);
                }
                sb.append(categories[i]);

                if (i < categories.length - 1) {
                    sb.append(CATEGORY_SEPARATOR);
                }
            }
        }
        if (musicID != null) {
            sb.append(LEAF_SEPARATOR).append(musicID);
        }
        return sb.toString();
    }

    private static boolean isValidCategory(String category) {
        return category == null
                || (category.indexOf(CATEGORY_SEPARATOR) < 0 && category.indexOf(LEAF_SEPARATOR) < 0);
    }

    public static String extractMusicIDFromMediaID(@NonNull String mediaID) {
        int pos = mediaID.indexOf(LEAF_SEPARATOR);

        if (pos >= 0) {
            return mediaID.substring(pos + 1);
        }
        return null;
    }

    public static @NonNull String[] getHierarchy(@NonNull String mediaID) {
        int pos = mediaID.indexOf(LEAF_SEPARATOR);

        if (pos >= 0) {
            mediaID = mediaID.substring(0, pos);
        }
        return mediaID.split(String.valueOf(CATEGORY_SEPARATOR));
    }

    public static String extractBrowseCategoryValueFromMediaID(@NonNull String mediaID) {
        String[] hierarchy = getHierarchy(mediaID);

        if (hierarchy.length == 2) {
            return hierarchy[1];
        }
        return null;
    }

    public static boolean isBrowsable(@NonNull String mediaID) {
        return mediaID.indexOf(LEAF_SEPARATOR) < 0;
    }

    public static String getParentMediaID(@NonNull String mediaID) {
        String[] hierarchy = getHierarchy(mediaID);

        if (!isBrowsable(mediaID)) {
            return createMediaID(null, hierarchy);
        }
        if (hierarchy.length <= 1) {
            return MEDIA_ID_ROOT;
        }
        String[] parentHierarchy = Arrays.copyOf(hierarchy, hierarchy.length - 1);
        return createMediaID(null, parentHierarchy);
    }

    public static boolean isMediaItemPlaying(Context context, MediaBrowserCompat.MediaItem mediaItem) {
        MediaControllerCompat controller = ((FragmentActivity) context).getSupportMediaController();

        if (controller != null && controller.getMetadata() != null) {
            String currentPlayingMediaId = controller.getMetadata().getDescription().getMediaId();
            String itemMusicId = MediaIDHelper.extractMusicIDFromMediaID(mediaItem.getDescription().getMediaId());

            if (currentPlayingMediaId != null && TextUtils.equals(currentPlayingMediaId, itemMusicId)) {
                return true;
            }
        }
        return false;
    }
}