Java tutorial
/***************************************************************************** * MediaInfoActivity.java ***************************************************************************** * Copyright 2011-2015 VLC authors and VideoLAN * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ package org.videolan.vlc.gui.video; import android.content.res.Configuration; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.design.widget.FloatingActionButton; import android.support.v4.app.ListFragment; import android.support.v7.app.AppCompatActivity; import android.util.DisplayMetrics; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.TextView; import org.videolan.libvlc.LibVLC; import org.videolan.libvlc.Media; import org.videolan.libvlc.util.Extensions; import org.videolan.libvlc.util.VLCUtil; import org.videolan.vlc.MediaLibrary; import org.videolan.vlc.MediaWrapper; import org.videolan.vlc.R; import org.videolan.vlc.util.BitmapUtil; import org.videolan.vlc.util.Strings; import org.videolan.vlc.util.Util; import org.videolan.vlc.util.VLCInstance; import org.videolan.vlc.util.WeakHandler; import java.io.File; import java.nio.ByteBuffer; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; public class MediaInfoFragment extends ListFragment { public final static String TAG = "VLC/MediaInfoFragment"; public final static String ITEM_KEY = "key_item"; private MediaWrapper mItem; private Bitmap mImage; private TextView mLengthView; private TextView mSizeView; private TextView mPathView; private FloatingActionButton mPlayButton; private ImageButton mDelete; private ImageView mSubtitles; private Media mMedia; private MediaInfoAdapter mAdapter; private final static int NEW_IMAGE = 0; private final static int NEW_TEXT = 1; private final static int NEW_SIZE = 2; private final static int HIDE_DELETE = 3; private final static int EXIT = 4; private final static int SHOW_SUBTITLES = 5; ExecutorService mThreadPoolExecutor; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (savedInstanceState != null) mItem = savedInstanceState.getParcelable(ITEM_KEY); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreate(savedInstanceState); View v = inflater.inflate(R.layout.media_info, container, false); mLengthView = (TextView) v.findViewById(R.id.length); mSizeView = (TextView) v.findViewById(R.id.size_value); mPathView = (TextView) v.findViewById(R.id.info_path); mPlayButton = (FloatingActionButton) v.findViewById(R.id.play); mDelete = (ImageButton) v.findViewById(R.id.info_delete); mSubtitles = (ImageView) v.findViewById(R.id.info_subtitles); mThreadPoolExecutor = Executors.newFixedThreadPool(2); mThreadPoolExecutor.submit(mCheckFile); mThreadPoolExecutor.submit(mLoadImage); mPathView.setText(mItem == null ? "" : Uri.decode(mItem.getLocation().substring(7))); mPlayButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { VideoPlayerActivity.start(getActivity(), mItem.getUri()); } }); mDelete.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mItem != null) { new Thread(new Runnable() { @Override public void run() { boolean deleted = Util.deleteFile(mItem.getLocation()); if (deleted) { mHandler.obtainMessage(EXIT).sendToTarget(); } } }).start(); } } }); mAdapter = new MediaInfoAdapter(getActivity()); setListAdapter(mAdapter); return v; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (mItem == null) { // Shouldn't happen, maybe user opened it faster than Media Library could index it return; } ((AppCompatActivity) getActivity()).getSupportActionBar().setTitle(mItem.getTitle()); mLengthView.setText(Strings.millisToString(mItem.getLength())); } public void onStop() { super.onStop(); if (mThreadPoolExecutor != null) mThreadPoolExecutor.shutdownNow(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putParcelable(ITEM_KEY, mItem); } public void setMediaLocation(String MRL) { if (MRL == null) return; mItem = MediaLibrary.getInstance().getMediaItem(MRL); } Runnable mCheckFile = new Runnable() { @Override public void run() { File itemFile = new File(Uri.decode(mItem.getLocation().substring(5))); if (!itemFile.canWrite()) mHandler.obtainMessage(HIDE_DELETE).sendToTarget(); long length = itemFile.length(); mHandler.obtainMessage(NEW_SIZE, Long.valueOf(length)).sendToTarget(); checkSubtitles(itemFile); } }; private void checkSubtitles(File itemFile) { String extension, filename, videoName = Uri.decode(itemFile.getName()), parentPath = Uri.decode(itemFile.getParent()); videoName = videoName.substring(0, videoName.lastIndexOf('.')); String[] subFolders = { "/Subtitles", "/subtitles", "/Subs", "/subs" }; String[] files = itemFile.getParentFile().list(); int filesLength = files == null ? 0 : files.length; for (int i = 0; i < subFolders.length; ++i) { File subFolder = new File(parentPath + subFolders[i]); if (!subFolder.exists()) continue; String[] subFiles = subFolder.list(); int subFilesLength = 0; String[] newFiles = new String[0]; if (subFiles != null) { subFilesLength = subFiles.length; newFiles = new String[filesLength + subFilesLength]; System.arraycopy(subFiles, 0, newFiles, 0, subFilesLength); } if (files != null) System.arraycopy(files, 0, newFiles, subFilesLength, filesLength); files = newFiles; filesLength = files.length; } for (int i = 0; i < filesLength; ++i) { filename = Uri.decode(files[i]); int index = filename.lastIndexOf('.'); if (index <= 0) continue; extension = filename.substring(index); if (!Extensions.SUBTITLES.contains(extension)) continue; if (filename.startsWith(videoName)) { mHandler.obtainMessage(SHOW_SUBTITLES).sendToTarget(); return; } } } Runnable mLoadImage = new Runnable() { @Override public void run() { final LibVLC libVlc = VLCInstance.get(); if (libVlc == null) return; mMedia = new Media(libVlc, mItem.getUri()); mMedia.parse(); int videoHeight = mItem.getHeight(); int videoWidth = mItem.getWidth(); if (videoWidth == 0 || videoHeight == 0) { mMedia.release(); return; } mHandler.sendEmptyMessage(NEW_TEXT); DisplayMetrics screen = new DisplayMetrics(); getActivity().getWindowManager().getDefaultDisplay().getMetrics(screen); int width, height; if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { width = Math.min(screen.widthPixels, screen.heightPixels); } else { width = screen.widthPixels / 2; } height = width * videoHeight / videoWidth; // Get the thumbnail. mImage = Bitmap.createBitmap(width, height, Config.ARGB_8888); byte[] b = VLCUtil.getThumbnail(mMedia, width, height); mMedia.release(); if (b == null) // We were not able to create a thumbnail for this item. return; if (Thread.interrupted()) { return; } mImage.copyPixelsFromBuffer(ByteBuffer.wrap(b)); mImage = BitmapUtil.cropBorders(mImage, width, height); mHandler.sendEmptyMessage(NEW_IMAGE); } }; private void updateImage() { if (getView() == null) return; ImageView imageView = (ImageView) getView().findViewById(R.id.image); imageView.setImageBitmap(mImage); ViewGroup.LayoutParams lp = imageView.getLayoutParams(); lp.height = mImage.getHeight(); lp.width = mImage.getWidth(); imageView.setLayoutParams(lp); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); mPlayButton.setVisibility(View.VISIBLE); mLengthView.setVisibility(View.VISIBLE); } private void updateText() { boolean hasSubs = false; if (mMedia == null) return; final int trackCount = mMedia.getTrackCount(); for (int i = 0; i < trackCount; ++i) { final Media.Track track = mMedia.getTrack(i); if (track.type == Media.Track.Type.Text) hasSubs = true; mAdapter.add(track); } if (mAdapter.isEmpty()) { getActivity().finish(); return; } if (hasSubs) mHandler.obtainMessage(SHOW_SUBTITLES).sendToTarget(); } private void updateSize(Long size) { mSizeView.setText(Strings.readableFileSize(size.longValue())); } private Handler mHandler = new MediaInfoHandler(this); private static class MediaInfoHandler extends WeakHandler<MediaInfoFragment> { public MediaInfoHandler(MediaInfoFragment owner) { super(owner); } @Override public void handleMessage(Message msg) { MediaInfoFragment fragment = getOwner(); if (fragment == null) return; switch (msg.what) { case NEW_IMAGE: fragment.updateImage(); break; case NEW_TEXT: fragment.updateText(); break; case NEW_SIZE: fragment.updateSize((Long) msg.obj); break; case HIDE_DELETE: fragment.mDelete.setClickable(false); fragment.mDelete.setVisibility(View.GONE); break; case EXIT: fragment.getActivity().finish(); MediaLibrary.getInstance().loadMediaItems(true); break; case SHOW_SUBTITLES: fragment.mSubtitles.setVisibility(View.VISIBLE); break; } }; }; }