456 lines
14 KiB
Java
456 lines
14 KiB
Java
/*
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This file is part of Subsonic.
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Subsonic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Subsonic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2009 (C) Sindre Mehus
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*/
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package org.moire.ultrasonic.util;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Bitmap;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.TransitionDrawable;
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import android.os.Handler;
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import android.text.TextUtils;
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import android.util.Log;
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import android.view.View;
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import android.widget.ImageView;
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import android.widget.TextView;
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import org.moire.ultrasonic.R;
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import org.moire.ultrasonic.domain.MusicDirectory;
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import org.moire.ultrasonic.service.MusicService;
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import org.moire.ultrasonic.service.MusicServiceFactory;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.LinkedBlockingQueue;
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import java.util.concurrent.atomic.AtomicBoolean;
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/**
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* Asynchronous loading of images, with caching.
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* <p/>
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* There should normally be only one instance of this class.
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*
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* @author Sindre Mehus
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*/
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public class LegacyImageLoader implements Runnable, ImageLoader {
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private static final String TAG = LegacyImageLoader.class.getSimpleName();
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private final LRUCache<String, Bitmap> cache = new LRUCache<>(150);
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private final BlockingQueue<Task> queue;
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private int imageSizeDefault;
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private final int imageSizeLarge;
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private Bitmap largeUnknownImage;
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private Bitmap unknownAvatarImage;
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private Context context;
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private Collection<Thread> threads;
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private AtomicBoolean running = new AtomicBoolean();
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private int concurrency;
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public LegacyImageLoader(
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Context context,
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int concurrency
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) {
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this.context = context;
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this.concurrency = concurrency;
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queue = new LinkedBlockingQueue<>(1000);
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Resources resources = context.getResources();
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Drawable drawable = resources.getDrawable(R.drawable.unknown_album);
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// Determine the density-dependent image sizes.
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if (drawable != null) {
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imageSizeDefault = drawable.getIntrinsicHeight();
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}
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imageSizeLarge = Util.getMaxDisplayMetric(context);
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createLargeUnknownImage(context);
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createUnknownAvatarImage(context);
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}
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@Override
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public synchronized boolean isRunning() {
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return running.get() && !threads.isEmpty();
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}
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@Override
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public void setConcurrency(int concurrency) {
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this.concurrency = concurrency;
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}
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@Override
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public void startImageLoader() {
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running.set(true);
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threads = Collections.synchronizedCollection(new ArrayList<Thread>(this.concurrency));
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for (int i = 0; i < this.concurrency; i++) {
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Thread thread = new Thread(this, String.format("ImageLoader_%d", i));
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threads.add(thread);
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thread.start();
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}
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}
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@Override
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public synchronized void stopImageLoader() {
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clear();
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for (Thread thread : threads) {
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thread.interrupt();
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}
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running.set(false);
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threads.clear();
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}
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private void createLargeUnknownImage(Context context) {
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BitmapDrawable drawable = (BitmapDrawable) context.getResources().getDrawable(R.drawable.unknown_album);
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Log.i(TAG, "createLargeUnknownImage");
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if (drawable != null) {
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largeUnknownImage = Util.scaleBitmap(drawable.getBitmap(), imageSizeLarge);
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}
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}
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private void createUnknownAvatarImage(Context context) {
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Resources res = context.getResources();
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Drawable contact = res.getDrawable(R.drawable.ic_contact_picture);
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unknownAvatarImage = Util.createBitmapFromDrawable(contact);
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}
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@Override
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public void loadAvatarImage(
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View view,
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String username,
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boolean large,
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int size,
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boolean crossFade,
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boolean highQuality
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) {
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view.invalidate();
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if (username == null) {
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setUnknownAvatarImage(view);
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return;
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}
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if (size <= 0) {
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size = large ? imageSizeLarge : imageSizeDefault;
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}
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Bitmap bitmap = cache.get(getKey(username, size));
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if (bitmap != null) {
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setAvatarImageBitmap(view, username, bitmap, crossFade);
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return;
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}
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setUnknownAvatarImage(view);
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queue.offer(new Task(view, username, size, large, crossFade, highQuality));
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}
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@Override
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public void loadImage(
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View view,
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MusicDirectory.Entry entry,
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boolean large,
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int size,
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boolean crossFade,
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boolean highQuality
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) {
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view.invalidate();
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if (entry == null) {
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setUnknownImage(view, large);
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return;
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}
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String coverArt = entry.getCoverArt();
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if (TextUtils.isEmpty(coverArt)) {
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setUnknownImage(view, large);
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return;
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}
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if (size <= 0) {
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size = large ? imageSizeLarge : imageSizeDefault;
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}
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Bitmap bitmap = cache.get(getKey(coverArt, size));
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if (bitmap != null) {
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setImageBitmap(view, entry, bitmap, crossFade);
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return;
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}
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setUnknownImage(view, large);
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queue.offer(new Task(view, entry, size, large, crossFade, highQuality));
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}
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private static String getKey(String coverArtId, int size) {
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return String.format("%s:%d", coverArtId, size);
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}
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@Override
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public Bitmap getImageBitmap(String username, int size) {
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Bitmap bitmap = cache.get(getKey(username, size));
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if (bitmap != null && !bitmap.isRecycled()) {
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Bitmap.Config config = bitmap.getConfig();
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return bitmap.copy(config, false);
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}
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return null;
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}
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@Override
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public Bitmap getImageBitmap(MusicDirectory.Entry entry, boolean large, int size) {
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if (entry == null) {
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return null;
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}
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String coverArt = entry.getCoverArt();
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if (TextUtils.isEmpty(coverArt)) {
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return null;
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}
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if (size <= 0) {
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size = large ? imageSizeLarge : imageSizeDefault;
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}
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Bitmap bitmap = cache.get(getKey(coverArt, size));
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if (bitmap != null && !bitmap.isRecycled()) {
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Bitmap.Config config = bitmap.getConfig();
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return bitmap.copy(config, false);
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}
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return null;
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}
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private void setImageBitmap(
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View view,
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MusicDirectory.Entry entry,
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Bitmap bitmap,
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boolean crossFade
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) {
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if (view instanceof ImageView) {
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ImageView imageView = (ImageView) view;
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MusicDirectory.Entry tagEntry = (MusicDirectory.Entry) view.getTag();
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// Only apply image to the view if the view is intended for this entry
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if (entry != null && tagEntry != null && !entry.equals(tagEntry)) {
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Log.i(TAG, "View is no longer valid, not setting ImageBitmap");
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return;
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}
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if (crossFade) {
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Drawable existingDrawable = imageView.getDrawable();
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Drawable newDrawable = Util.createDrawableFromBitmap(this.context, bitmap);
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if (existingDrawable == null) {
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Bitmap emptyImage = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
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existingDrawable = new BitmapDrawable(context.getResources(), emptyImage);
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}
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Drawable[] layers = new Drawable[]{existingDrawable, newDrawable};
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TransitionDrawable transitionDrawable = new TransitionDrawable(layers);
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imageView.setImageDrawable(transitionDrawable);
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transitionDrawable.startTransition(250);
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} else {
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imageView.setImageBitmap(bitmap);
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}
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}
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}
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private void setAvatarImageBitmap(
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View view,
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String username,
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Bitmap bitmap,
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boolean crossFade
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) {
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if (view instanceof ImageView) {
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ImageView imageView = (ImageView) view;
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String tagEntry = (String) view.getTag();
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// Only apply image to the view if the view is intended for this entry
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if (username != null &&
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tagEntry != null &&
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!username.equals(tagEntry)) {
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Log.i(TAG, "View is no longer valid, not setting ImageBitmap");
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return;
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}
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if (crossFade) {
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Drawable existingDrawable = imageView.getDrawable();
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Drawable newDrawable = Util.createDrawableFromBitmap(this.context, bitmap);
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if (existingDrawable == null) {
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Bitmap emptyImage = Bitmap.createBitmap(
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bitmap.getWidth(),
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bitmap.getHeight(),
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Bitmap.Config.ARGB_8888
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);
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existingDrawable = new BitmapDrawable(context.getResources(), emptyImage);
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}
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Drawable[] layers = new Drawable[]{existingDrawable, newDrawable};
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TransitionDrawable transitionDrawable = new TransitionDrawable(layers);
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imageView.setImageDrawable(transitionDrawable);
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transitionDrawable.startTransition(250);
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} else {
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imageView.setImageBitmap(bitmap);
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}
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}
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}
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private void setUnknownAvatarImage(View view) {
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setAvatarImageBitmap(view, null, unknownAvatarImage, false);
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}
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private void setUnknownImage(View view, boolean large) {
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if (large) {
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setImageBitmap(view, null, largeUnknownImage, false);
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} else {
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if (view instanceof TextView) {
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((TextView) view).setCompoundDrawablesWithIntrinsicBounds(R.drawable.unknown_album, 0, 0, 0);
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} else if (view instanceof ImageView) {
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((ImageView) view).setImageResource(R.drawable.unknown_album);
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}
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}
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}
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@Override
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public void addImageToCache(Bitmap bitmap, MusicDirectory.Entry entry, int size) {
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cache.put(getKey(entry.getCoverArt(), size), bitmap);
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}
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@Override
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public void addImageToCache(Bitmap bitmap, String username, int size) {
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cache.put(getKey(username, size), bitmap);
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}
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@Override
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public void clear() {
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queue.clear();
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}
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@Override
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public void run() {
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while (running.get()) {
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try {
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Task task = queue.take();
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task.execute();
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} catch (InterruptedException ignored) {
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running.set(false);
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break;
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} catch (Throwable x) {
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Log.e(TAG, "Unexpected exception in ImageLoader.", x);
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}
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}
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}
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private class Task {
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private final View view;
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private final MusicDirectory.Entry entry;
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private final String username;
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private final Handler handler;
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private final int size;
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private final boolean saveToFile;
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private final boolean crossFade;
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private final boolean highQuality;
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Task(
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View view,
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MusicDirectory.Entry entry,
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int size,
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boolean saveToFile,
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boolean crossFade,
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boolean highQuality
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) {
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this.view = view;
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this.entry = entry;
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this.username = null;
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this.size = size;
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this.saveToFile = saveToFile;
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this.crossFade = crossFade;
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this.highQuality = highQuality;
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handler = new Handler();
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}
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Task(
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View view,
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String username,
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int size,
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boolean saveToFile,
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boolean crossFade,
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boolean highQuality
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) {
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this.view = view;
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this.entry = null;
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this.username = username;
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this.size = size;
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this.saveToFile = saveToFile;
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this.crossFade = crossFade;
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this.highQuality = highQuality;
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handler = new Handler();
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}
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public void execute() {
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try {
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MusicService musicService = MusicServiceFactory.getMusicService(view.getContext());
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final boolean isAvatar = this.username != null && this.entry == null;
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final Bitmap bitmap = this.entry != null
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? musicService.getCoverArt(view.getContext(), entry, size, saveToFile, highQuality, null)
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: musicService.getAvatar(view.getContext(), username, size, saveToFile, highQuality, null);
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if (bitmap == null) {
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Log.d(TAG, "Found empty album art.");
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return;
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}
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if (isAvatar)
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addImageToCache(bitmap, username, size);
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else
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addImageToCache(bitmap, entry, size);
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handler.post(new Runnable() {
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@Override
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public void run() {
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if (isAvatar) {
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setAvatarImageBitmap(view, username, bitmap, crossFade);
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} else {
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setImageBitmap(view, entry, bitmap, crossFade);
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}
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}
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});
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} catch (Throwable x) {
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Log.e(TAG, "Failed to download album art.", x);
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}
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}
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}
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}
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