package eu.siacs.conversations.persistance;
import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.pdf.PdfRenderer;
import android.media.MediaMetadataRetriever;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore;
import android.provider.OpenableColumns;
import android.support.annotation.RequiresApi;
import android.support.v4.content.FileProvider;
import android.system.Os;
import android.system.StructStat;
import android.util.Base64;
import android.util.Base64OutputStream;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.LruCache;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URL;
import java.security.DigestOutputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.UUID;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.AttachFileToConversationRunnable;
import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.ui.RecordingActivity;
import eu.siacs.conversations.ui.util.Attachment;
import eu.siacs.conversations.utils.Compatibility;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.ExifHelper;
import eu.siacs.conversations.utils.FileUtils;
import eu.siacs.conversations.utils.FileWriterException;
import eu.siacs.conversations.utils.MimeUtils;
import eu.siacs.conversations.xmpp.pep.Avatar;
public class FileBackend {
private static final Object THUMBNAIL_LOCK = new Object();
private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
private static final String FILE_PROVIDER = ".files";
private static final float IGNORE_PADDING = 0.15f;
private XmppConnectionService mXmppConnectionService;
public FileBackend(XmppConnectionService service) {
this.mXmppConnectionService = service;
}
private static boolean isInDirectoryThatShouldNotBeScanned(Context context, File file) {
return isInDirectoryThatShouldNotBeScanned(context, file.getAbsolutePath());
}
public static boolean isInDirectoryThatShouldNotBeScanned(Context context, String path) {
for (String type : new String[]{RecordingActivity.STORAGE_DIRECTORY_TYPE_NAME, "Files"}) {
if (path.startsWith(getConversationsDirectory(context, type))) {
return true;
}
}
return false;
}
public static long getFileSize(Context context, Uri uri) {
try {
final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
cursor.close();
return size;
} else {
return -1;
}
} catch (Exception e) {
return -1;
}
}
public static boolean allFilesUnderSize(Context context, List<Attachment> attachments, long max) {
final boolean compressVideo = !AttachFileToConversationRunnable.getVideoCompression(context).equals("uncompressed");
if (max <= 0) {
Log.d(Config.LOGTAG, "server did not report max file size for http upload");
return true; //exception to be compatible with HTTP Upload < v0.2
}
for (Attachment attachment : attachments) {
if (attachment.getType() != Attachment.Type.FILE) {
continue;
}
String mime = attachment.getMime();
if (mime != null && mime.startsWith("video/") && compressVideo) {
try {
Dimensions dimensions = FileBackend.getVideoDimensions(context, attachment.getUri());
if (dimensions.getMin() > 720) {
Log.d(Config.LOGTAG, "do not consider video file with min width larger than 720 for size check");
continue;
}
} catch (NotAVideoFile notAVideoFile) {
//ignore and fall through
}
}
if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
Log.d(Config.LOGTAG, "not all files are under " + max + " bytes. suggesting falling back to jingle");
return false;
}
}
return true;
}
public static String getConversationsDirectory(Context context, final String type) {
if (Config.ONLY_INTERNAL_STORAGE) {
return context.getFilesDir().getAbsolutePath() + "/" + type + "/";
} else {
return getAppMediaDirectory(context) + context.getString(R.string.app_name) + " " + type + "/";
}
}
public static String getAppMediaDirectory(Context context) {
return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + context.getString(R.string.app_name) + "/Media/";
}
public static String getBackupDirectory(Context context) {
return getBackupDirectory(context.getString(R.string.app_name));
}
public static String getBackupDirectory(String app) {
return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + app + "/Backup/";
}
private static Bitmap rotate(Bitmap bitmap, int degree) {
if (degree == 0) {
return bitmap;
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.postRotate(degree);
Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
if (bitmap != null && !bitmap.isRecycled()) {
bitmap.recycle();
}
return result;
}
public static boolean isPathBlacklisted(String path) {
final String androidDataPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
return path.startsWith(androidDataPath);
}
private static Paint createAntiAliasingPaint() {
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
return paint;
}
private static String getTakePhotoPath() {
return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
}
public static Uri getUriForUri(Context context, Uri uri) {
if ("file".equals(uri.getScheme())) {
return getUriForFile(context, new File(uri.getPath()));
} else {
return uri;
}
}
public static Uri getUriForFile(Context context, File file) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
try {
return FileProvider.getUriForFile(context, getAuthority(context), file);
} catch (IllegalArgumentException e) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
throw new SecurityException(e);
} else {
return Uri.fromFile(file);
}
}
} else {
return Uri.fromFile(file);
}
}
public static String getAuthority(Context context) {
return context.getPackageName() + FILE_PROVIDER;
}
private static boolean hasAlpha(final Bitmap bitmap) {
for (int x = 0; x < bitmap.getWidth(); ++x) {
for (int y = 0; y < bitmap.getWidth(); ++y) {
if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
return true;
}
}
}
return false;
}
private static int calcSampleSize(File image, int size) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(image.getAbsolutePath(), options);
return calcSampleSize(options, size);
}
private static int calcSampleSize(BitmapFactory.Options options, int size) {
int height = options.outHeight;
int width = options.outWidth;
int inSampleSize = 1;
if (height > size || width > size) {
int halfHeight = height / 2;
int halfWidth = width / 2;
while ((halfHeight / inSampleSize) > size
&& (halfWidth / inSampleSize) > size) {
inSampleSize *= 2;
}
}
return inSampleSize;
}
private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
try {
mediaMetadataRetriever.setDataSource(context, uri);
} catch (RuntimeException e) {
throw new NotAVideoFile(e);
}
return getVideoDimensions(mediaMetadataRetriever);
}
private static Dimensions getVideoDimensionsOfFrame(MediaMetadataRetriever mediaMetadataRetriever) {
Bitmap bitmap = null;
try {
bitmap = mediaMetadataRetriever.getFrameAtTime();
return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
} catch (Exception e) {
return null;
} finally {
if (bitmap != null) {
bitmap.recycle();
;
}
}
}
private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
if (hasVideo == null) {
throw new NotAVideoFile();
}
Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
if (dimensions != null) {
return dimensions;
}
final int rotation;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
rotation = extractRotationFromMediaRetriever(metadataRetriever);
} else {
rotation = 0;
}
boolean rotated = rotation == 90 || rotation == 270;
int height;
try {
String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
height = Integer.parseInt(h);
} catch (Exception e) {
height = -1;
}
int width;
try {
String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
width = Integer.parseInt(w);
} catch (Exception e) {
width = -1;
}
metadataRetriever.release();
Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
}
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
try {
return Integer.parseInt(r);
} catch (Exception e) {
return 0;
}
}
public static void close(final Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (Exception e) {
Log.d(Config.LOGTAG, "unable to close stream", e);
}
}
}
public static void close(final Socket socket) {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
Log.d(Config.LOGTAG, "unable to close socket", e);
}
}
}
public static void close(final ServerSocket socket) {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
Log.d(Config.LOGTAG, "unable to close server socket", e);
}
}
}
public static boolean weOwnFile(Context context, Uri uri) {
if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
return false;
} else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
return fileIsInFilesDir(context, uri);
} else {
return weOwnFileLollipop(uri);
}
}
/**
* This is more than hacky but probably way better than doing nothing
* Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
* and check against those as well
*/
private static boolean fileIsInFilesDir(Context context, Uri uri) {
try {
final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
final String needle = new File(uri.getPath()).getCanonicalPath();
return needle.startsWith(haystack);
} catch (IOException e) {
return false;
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private static boolean weOwnFileLollipop(Uri uri) {
try {
File file = new File(uri.getPath());
FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
StructStat st = Os.fstat(fd);
return st.st_uid == android.os.Process.myUid();
} catch (FileNotFoundException e) {
return false;
} catch (Exception e) {
return true;
}
}
public static Uri getMediaUri(Context context, File file) {
final String filePath = file.getAbsolutePath();
final Cursor cursor;
try {
cursor = context.getContentResolver().query(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
new String[]{MediaStore.Images.Media._ID},
MediaStore.Images.Media.DATA + "=? ",
new String[]{filePath}, null);
} catch (SecurityException e) {
return null;
}
if (cursor != null && cursor.moveToFirst()) {
final int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
cursor.close();
return Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
} else {
return null;
}
}
public static void updateFileParams(Message message, URL url, long size) {
final StringBuilder body = new StringBuilder();
body.append(url.toString()).append('|').append(size);
message.setBody(body.toString());
}
public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
Bitmap bitmap = cache.get(key);
if (bitmap != null || cacheOnly) {
return bitmap;
}
final String mime = attachment.getMime();
if ("application/pdf".equals(mime) && Compatibility.runsTwentyOne()) {
bitmap = cropCenterSquarePdf(attachment.getUri(), size);
drawOverlay(bitmap, paintOverlayBlackPdf(bitmap) ? R.drawable.open_pdf_black : R.drawable.open_pdf_white, 0.75f);
} else if (mime != null && mime.startsWith("video/")) {
bitmap = cropCenterSquareVideo(attachment.getUri(), size);
drawOverlay(bitmap, paintOverlayBlack(bitmap) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
} else {
bitmap = cropCenterSquare(attachment.getUri(), size);
if (bitmap != null && "image/gif".equals(mime)) {
Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
bitmap.recycle();
bitmap = withGifOverlay;
}
}
if (bitmap != null) {
cache.put(key, bitmap);
}
return bitmap;
}
private void createNoMedia(File diretory) {
final File noMedia = new File(diretory, ".nomedia");
if (!noMedia.exists()) {
try {
if (!noMedia.createNewFile()) {
Log.d(Config.LOGTAG, "created nomedia file " + noMedia.getAbsolutePath());
}
} catch (Exception e) {
Log.d(Config.LOGTAG, "could not create nomedia file");
}
}
}
public void updateMediaScanner(File file) {
updateMediaScanner(file, null);
}
public void updateMediaScanner(File file, final Runnable callback) {
if (!isInDirectoryThatShouldNotBeScanned(mXmppConnectionService, file)) {
MediaScannerConnection.scanFile(mXmppConnectionService, new String[]{file.getAbsolutePath()}, null, new MediaScannerConnection.MediaScannerConnectionClient() {
@Override
public void onMediaScannerConnected() {
}
@Override
public void onScanCompleted(String path, Uri uri) {
if (callback != null && file.getAbsolutePath().equals(path)) {
callback.run();
} else {
Log.d(Config.LOGTAG, "media scanner scanned wrong file");
if (callback != null) {
callback.run();
}
}
}
});
return;
/*Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(file));
mXmppConnectionService.sendBroadcast(intent);*/
} else if (file.getAbsolutePath().startsWith(getAppMediaDirectory(mXmppConnectionService))) {
createNoMedia(file.getParentFile());
}
if (callback != null) {
callback.run();
}
}
public boolean deleteFile(Message message) {
File file = getFile(message);
if (file.delete()) {
updateMediaScanner(file);
return true;
} else {
return false;
}
}
public DownloadableFile getFile(Message message) {
return getFile(message, true);
}
public DownloadableFile getFileForPath(String path) {
return getFileForPath(path, MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
}
public DownloadableFile getFileForPath(String path, String mime) {
final DownloadableFile file;
if (path.startsWith("/")) {
file = new DownloadableFile(path);
} else {
if (mime != null && mime.startsWith("image/")) {
file = new DownloadableFile(getConversationsDirectory("Images") + path);
} else if (mime != null && mime.startsWith("video/")) {
file = new DownloadableFile(getConversationsDirectory("Videos") + path);
} else {
file = new DownloadableFile(getConversationsDirectory("Files") + path);
}
}
return file;
}
public boolean isInternalFile(final File file) {
final File internalFile = getFileForPath(file.getName());
return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
}
public DownloadableFile getFile(Message message, boolean decrypted) {
final boolean encrypted = !decrypted
&& (message.getEncryption() == Message.ENCRYPTION_PGP
|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
String path = message.getRelativeFilePath();
if (path == null) {
path = message.getUuid();
}
final DownloadableFile file = getFileForPath(path, message.getMimeType());
if (encrypted) {
return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
} else {
return file;
}
}
public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
List<Attachment> attachments = new ArrayList<>();
for (DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
final String mime = MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(relativeFilePath.path));
final File file = getFileForPath(relativeFilePath.path, mime);
attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
}
return attachments;
}
private String getConversationsDirectory(final String type) {
return getConversationsDirectory(mXmppConnectionService, type);
}
private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
int w = originalBitmap.getWidth();
int h = originalBitmap.getHeight();
if (w <= 0 || h <= 0) {
throw new IOException("Decoded bitmap reported bounds smaller 0");
} else if (Math.max(w, h) > size) {
int scalledW;
int scalledH;
if (w <= h) {
scalledW = Math.max((int) (w / ((double) h / size)), 1);
scalledH = size;
} else {
scalledW = size;
scalledH = Math.max((int) (h / ((double) w / size)), 1);
}
final Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
if (!originalBitmap.isRecycled()) {
originalBitmap.recycle();
}
return result;
} else {
return originalBitmap;
}
}
public boolean useImageAsIs(Uri uri) {
String path = getOriginalPath(uri);
if (path == null || isPathBlacklisted(path)) {
return false;
}
File file = new File(path);
long size = file.length();
if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
return false;
}
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
try {
BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
return false;
}
return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
} catch (FileNotFoundException e) {
return false;
}
}
public String getOriginalPath(Uri uri) {
return FileUtils.getPath(mXmppConnectionService, uri);
}
private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
file.getParentFile().mkdirs();
OutputStream os = null;
InputStream is = null;
try {
file.createNewFile();
os = new FileOutputStream(file);
is = mXmppConnectionService.getContentResolver().openInputStream(uri);
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) > 0) {
try {
os.write(buffer, 0, length);
} catch (IOException e) {
throw new FileWriterException();
}
}
try {
os.flush();
} catch (IOException e) {
throw new FileWriterException();
}
} catch (FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (FileWriterException e) {
throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} finally {
close(os);
close(is);
}
}
public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
String extension = MimeUtils.guessExtensionFromMimeType(mime);
if (extension == null) {
Log.d(Config.LOGTAG, "extension from mime type was null");
extension = getExtensionFromUri(uri);
}
if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
extension = "oga";
}
message.setRelativeFilePath(message.getUuid() + "." + extension);
copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
}
private String getExtensionFromUri(Uri uri) {
String[] projection = {MediaStore.MediaColumns.DATA};
String filename = null;
Cursor cursor;
try {
cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
} catch (IllegalArgumentException e) {
cursor = null;
}
if (cursor != null) {
try {
if (cursor.moveToFirst()) {
filename = cursor.getString(0);
}
} catch (Exception e) {
filename = null;
} finally {
cursor.close();
}
}
if (filename == null) {
final List<String> segments = uri.getPathSegments();
if (segments.size() > 0) {
filename = segments.get(segments.size() - 1);
}
}
int pos = filename == null ? -1 : filename.lastIndexOf('.');
return pos > 0 ? filename.substring(pos + 1) : null;
}
private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException, NotAnImageFileException {
file.getParentFile().mkdirs();
InputStream is = null;
OutputStream os = null;
try {
if (!file.exists() && !file.createNewFile()) {
throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
}
is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
throw new FileCopyException(R.string.error_not_an_image_file);
}
Bitmap originalBitmap;
BitmapFactory.Options options = new BitmapFactory.Options();
int inSampleSize = (int) Math.pow(2, sampleSize);
Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
options.inSampleSize = inSampleSize;
originalBitmap = BitmapFactory.decodeStream(is, null, options);
is.close();
if (originalBitmap == null) {
throw new NotAnImageFileException();
}
Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
int rotation = getRotation(image);
scaledBitmap = rotate(scaledBitmap, rotation);
boolean targetSizeReached = false;
int quality = Config.IMAGE_QUALITY;
final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
while (!targetSizeReached) {
os = new FileOutputStream(file);
boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
if (!success) {
throw new FileCopyException(R.string.error_compressing_image);
}
os.flush();
targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
quality -= 5;
}
scaledBitmap.recycle();
} catch (FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} catch (SecurityException e) {
throw new FileCopyException(R.string.error_security_exception_during_image_copy);
} catch (OutOfMemoryError e) {
++sampleSize;
if (sampleSize <= 3) {
copyImageToPrivateStorage(file, image, sampleSize);
} else {
throw new FileCopyException(R.string.error_out_of_memory);
}
} finally {
close(os);
close(is);
}
}
public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException, NotAnImageFileException {
Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
copyImageToPrivateStorage(file, image, 0);
}
public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException, NotAnImageFileException {
switch (Config.IMAGE_FORMAT) {
case JPEG:
message.setRelativeFilePath(message.getUuid() + ".jpg");
break;
case PNG:
message.setRelativeFilePath(message.getUuid() + ".png");
break;
case WEBP:
message.setRelativeFilePath(message.getUuid() + ".webp");
break;
}
copyImageToPrivateStorage(getFile(message), image);
updateFileParams(message);
}
public boolean unusualBounds(Uri image) {
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
float ratio = (float) options.outHeight / options.outWidth;
return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
} catch (Exception e) {
return false;
}
}
private int getRotation(File file) {
return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
}
private int getRotation(Uri image) {
InputStream is = null;
try {
is = mXmppConnectionService.getContentResolver().openInputStream(image);
return ExifHelper.getOrientation(is);
} catch (FileNotFoundException e) {
return 0;
} finally {
close(is);
}
}
public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws IOException {
final String uuid = message.getUuid();
final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
Bitmap thumbnail = cache.get(uuid);
if ((thumbnail == null) && (!cacheOnly)) {
synchronized (THUMBNAIL_LOCK) {
thumbnail = cache.get(uuid);
if (thumbnail != null) {
return thumbnail;
}
DownloadableFile file = getFile(message);
final String mime = file.getMimeType();
if ("application/pdf".equals(mime) && Compatibility.runsTwentyOne()) {
thumbnail = getPdfDocumentPreview(file, size);
} else if (mime.startsWith("video/")) {
thumbnail = getVideoPreview(file, size);
} else {
Bitmap fullsize = getFullSizeImagePreview(file, size);
if (fullsize == null) {
throw new FileNotFoundException();
}
thumbnail = resize(fullsize, size);
thumbnail = rotate(thumbnail, getRotation(file));
if (mime.equals("image/gif")) {
Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
thumbnail.recycle();
thumbnail = withGifOverlay;
}
}
cache.put(uuid, thumbnail);
}
}
return thumbnail;
}
private Bitmap getFullSizeImagePreview(File file, int size) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(file, size);
try {
return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
} catch (OutOfMemoryError e) {
options.inSampleSize *= 2;
return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
}
}
private void drawOverlay(Bitmap bitmap, int resource, float factor) {
Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
Canvas canvas = new Canvas(bitmap);
float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
float left = (canvas.getWidth() - targetSize) / 2.0f;
float top = (canvas.getHeight() - targetSize) / 2.0f;
RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
}
/**
* https://stackoverflow.com/a/3943023/210897
*/
private boolean paintOverlayBlack(final Bitmap bitmap) {
final int h = bitmap.getHeight();
final int w = bitmap.getWidth();
int record = 0;
for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
for (int x = Math.round(w * IGNORE_PADDING); x < w - Math.round(w * IGNORE_PADDING); ++x) {
int pixel = bitmap.getPixel(x, y);
if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
--record;
} else {
++record;
}
}
}
return record < 0;
}
private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
final int h = bitmap.getHeight();
final int w = bitmap.getWidth();
int white = 0;
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
int pixel = bitmap.getPixel(x, y);
if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
white++;
}
}
}
return white > (h * w * 0.4f);
}
private Bitmap cropCenterSquareVideo(Uri uri, int size) {
MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
Bitmap frame;
try {
metadataRetriever.setDataSource(mXmppConnectionService, uri);
frame = metadataRetriever.getFrameAtTime(0);
metadataRetriever.release();
return cropCenterSquare(frame, size);
} catch (Exception e) {
frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
frame.eraseColor(0xff000000);
return frame;
}
}
private Bitmap getVideoPreview(final File file, final int size) {
final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
Bitmap frame;
try {
metadataRetriever.setDataSource(file.getAbsolutePath());
frame = metadataRetriever.getFrameAtTime(0);
metadataRetriever.release();
frame = resize(frame, size);
} catch (IOException | RuntimeException e) {
frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
frame.eraseColor(0xff000000);
}
drawOverlay(frame, paintOverlayBlack(frame) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
return frame;
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private Bitmap getPdfDocumentPreview(final File file, final int size) {
try {
final ParcelFileDescriptor fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
drawOverlay(rendered, paintOverlayBlackPdf(rendered) ? R.drawable.open_pdf_black : R.drawable.open_pdf_white, 0.75f);
return rendered;
} catch (final IOException | SecurityException e) {
Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
placeholder.eraseColor(0xff000000);
return placeholder;
}
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
try {
ParcelFileDescriptor fileDescriptor = mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
return cropCenterSquare(bitmap, size);
} catch (Exception e) {
final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
placeholder.eraseColor(0xff000000);
return placeholder;
}
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private Bitmap renderPdfDocument(ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
final PdfRenderer.Page page = pdfRenderer.openPage(0);
final Dimensions dimensions = scalePdfDimensions(new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
final Bitmap rendered = Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
rendered.eraseColor(0xffffffff);
page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
page.close();
pdfRenderer.close();
fileDescriptor.close();
return rendered;
}
public Uri getTakePhotoUri() {
File file;
if (Config.ONLY_INTERNAL_STORAGE) {
file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
} else {
file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
}
file.getParentFile().mkdirs();
return getUriForFile(mXmppConnectionService, file);
}
public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
final Avatar uncompressAvatar = getUncompressedAvatar(image);
if (uncompressAvatar != null && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
return uncompressAvatar;
}
if (uncompressAvatar != null) {
Log.d(Config.LOGTAG, "uncompressed avatar exceeded char limit by " + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
}
Bitmap bm = cropCenterSquare(image, size);
if (bm == null) {
return null;
}
if (hasAlpha(bm)) {
Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
bm.recycle();
bm = cropCenterSquare(image, 96);
return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
}
return getPepAvatar(bm, format, 100);
}
private Avatar getUncompressedAvatar(Uri uri) {
Bitmap bitmap = null;
try {
bitmap = BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
} catch (Exception e) {
return null;
} finally {
if (bitmap != null) {
bitmap.recycle();
}
}
}
private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
try {
ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
if (!bitmap.compress(format, quality, mDigestOutputStream)) {
return null;
}
mDigestOutputStream.flush();
mDigestOutputStream.close();
long chars = mByteArrayOutputStream.size();
if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
int q = quality - 2;
Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
return getPepAvatar(bitmap, format, q);
}
Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
final Avatar avatar = new Avatar();
avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
avatar.image = new String(mByteArrayOutputStream.toByteArray());
if (format.equals(Bitmap.CompressFormat.WEBP)) {
avatar.type = "image/webp";
} else if (format.equals(Bitmap.CompressFormat.JPEG)) {
avatar.type = "image/jpeg";
} else if (format.equals(Bitmap.CompressFormat.PNG)) {
avatar.type = "image/png";
}
avatar.width = bitmap.getWidth();
avatar.height = bitmap.getHeight();
return avatar;
} catch (OutOfMemoryError e) {
Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
return null;
} catch (Exception e) {
return null;
}
}
public Avatar getStoredPepAvatar(String hash) {
if (hash == null) {
return null;
}
Avatar avatar = new Avatar();
File file = new File(getAvatarPath(hash));
FileInputStream is = null;
try {
avatar.size = file.length();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
is = new FileInputStream(file);
ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
byte[] buffer = new byte[4096];
int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
os.flush();
os.close();
avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
avatar.image = new String(mByteArrayOutputStream.toByteArray());
avatar.height = options.outHeight;
avatar.width = options.outWidth;
avatar.type = options.outMimeType;
return avatar;
} catch (NoSuchAlgorithmException | IOException e) {
return null;
} finally {
close(is);
}
}
public boolean isAvatarCached(Avatar avatar) {
File file = new File(getAvatarPath(avatar.getFilename()));
return file.exists();
}
public boolean save(final Avatar avatar) {
File file;
if (isAvatarCached(avatar)) {
file = new File(getAvatarPath(avatar.getFilename()));
avatar.size = file.length();
} else {
file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
if (file.getParentFile().mkdirs()) {
Log.d(Config.LOGTAG, "created cache directory");
}
OutputStream os = null;
try {
if (!file.createNewFile()) {
Log.d(Config.LOGTAG, "unable to create temporary file " + file.getAbsolutePath());
}
os = new FileOutputStream(file);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.reset();
DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
final byte[] bytes = avatar.getImageAsBytes();
mDigestOutputStream.write(bytes);
mDigestOutputStream.flush();
mDigestOutputStream.close();
String sha1sum = CryptoHelper.bytesToHex(digest.digest());
if (sha1sum.equals(avatar.sha1sum)) {
File outputFile = new File(getAvatarPath(avatar.getFilename()));
if (outputFile.getParentFile().mkdirs()) {
Log.d(Config.LOGTAG, "created avatar directory");
}
String filename = getAvatarPath(avatar.getFilename());
if (!file.renameTo(new File(filename))) {
Log.d(Config.LOGTAG, "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
return false;
}
} else {
Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
if (!file.delete()) {
Log.d(Config.LOGTAG, "unable to delete temporary file");
}
return false;
}
avatar.size = bytes.length;
} catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
return false;
} finally {
close(os);
}
}
return true;
}
private String getAvatarPath(String avatar) {
return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar;
}
public Uri getAvatarUri(String avatar) {
return Uri.parse("file:" + getAvatarPath(avatar));
}
public Bitmap cropCenterSquare(Uri image, int size) {
if (image == null) {
return null;
}
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, size);
is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
return null;
}
Bitmap input = BitmapFactory.decodeStream(is, null, options);
if (input == null) {
return null;
} else {
input = rotate(input, getRotation(image));
return cropCenterSquare(input, size);
}
} catch (FileNotFoundException | SecurityException e) {
Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
return null;
} finally {
close(is);
}
}
public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
if (image == null) {
return null;
}
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
return null;
}
Bitmap source = BitmapFactory.decodeStream(is, null, options);
if (source == null) {
return null;
}
int sourceWidth = source.getWidth();
int sourceHeight = source.getHeight();
float xScale = (float) newWidth / sourceWidth;
float yScale = (float) newHeight / sourceHeight;
float scale = Math.max(xScale, yScale);
float scaledWidth = scale * sourceWidth;
float scaledHeight = scale * sourceHeight;
float left = (newWidth - scaledWidth) / 2;
float top = (newHeight - scaledHeight) / 2;
RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(dest);
canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
if (source.isRecycled()) {
source.recycle();
}
return dest;
} catch (SecurityException e) {
return null; //android 6.0 with revoked permissions for example
} catch (FileNotFoundException e) {
return null;
} finally {
close(is);
}
}
public Bitmap cropCenterSquare(Bitmap input, int size) {
int w = input.getWidth();
int h = input.getHeight();
float scale = Math.max((float) size / h, (float) size / w);
float outWidth = scale * w;
float outHeight = scale * h;
float left = (size - outWidth) / 2;
float top = (size - outHeight) / 2;
RectF target = new RectF(left, top, left + outWidth, top + outHeight);
Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
if (!input.isRecycled()) {
input.recycle();
}
return output;
}
private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
return calcSampleSize(options, size);
}
public void updateFileParams(Message message) {
updateFileParams(message, null);
}
public void updateFileParams(Message message, URL url) {
DownloadableFile file = getFile(message);
final String mime = file.getMimeType();
final boolean privateMessage = message.isPrivateMessage();
final boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
final boolean video = mime != null && mime.startsWith("video/");
final boolean audio = mime != null && mime.startsWith("audio/");
final boolean pdf = "application/pdf".equals(mime);
final StringBuilder body = new StringBuilder();
if (url != null) {
body.append(url.toString());
}
body.append('|').append(file.getSize());
if (image || video || (pdf && Compatibility.runsTwentyOne())) {
try {
final Dimensions dimensions;
if (video) {
dimensions = getVideoDimensions(file);
} else if (pdf && Compatibility.runsTwentyOne()) {
dimensions = getPdfDocumentDimensions(file);
} else {
dimensions = getImageDimensions(file);
}
if (dimensions.valid()) {
body.append('|').append(dimensions.width).append('|').append(dimensions.height);
}
} catch (NotAVideoFile notAVideoFile) {
Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
//fall threw
}
} else if (audio) {
body.append("|0|0|").append(getMediaRuntime(file));
}
message.setBody(body.toString());
message.setDeleted(false);
message.setType(privateMessage ? Message.TYPE_PRIVATE_FILE : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
}
private int getMediaRuntime(File file) {
try {
MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
mediaMetadataRetriever.setDataSource(file.toString());
return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
} catch (RuntimeException e) {
return 0;
}
}
private Dimensions getImageDimensions(File file) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
int rotation = getRotation(file);
boolean rotated = rotation == 90 || rotation == 270;
int imageHeight = rotated ? options.outWidth : options.outHeight;
int imageWidth = rotated ? options.outHeight : options.outWidth;
return new Dimensions(imageHeight, imageWidth);
}
private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
try {
metadataRetriever.setDataSource(file.getAbsolutePath());
} catch (RuntimeException e) {
throw new NotAVideoFile(e);
}
return getVideoDimensions(metadataRetriever);
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private Dimensions getPdfDocumentDimensions(final File file) {
final ParcelFileDescriptor fileDescriptor;
try {
fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
if (fileDescriptor == null) {
return new Dimensions(0, 0);
}
} catch (FileNotFoundException e) {
return new Dimensions(0, 0);
}
try {
final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
final PdfRenderer.Page page = pdfRenderer.openPage(0);
final int height = page.getHeight();
final int width = page.getWidth();
page.close();
pdfRenderer.close();
return scalePdfDimensions(new Dimensions(height, width));
} catch (IOException | SecurityException e) {
Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
return new Dimensions(0, 0);
}
}
private Dimensions scalePdfDimensions(Dimensions in) {
final DisplayMetrics displayMetrics = mXmppConnectionService.getResources().getDisplayMetrics();
final int target = (int) (displayMetrics.density * 288);
return scalePdfDimensions(in, target, true);
}
private static Dimensions scalePdfDimensions(final Dimensions in, final int target, final boolean fit) {
final int w, h;
if (fit == (in.width <= in.height)) {
w = Math.max((int) (in.width / ((double) in.height / target)), 1);
h = target;
} else {
w = target;
h = Math.max((int) (in.height / ((double) in.width / target)), 1);
}
return new Dimensions(h, w);
}
public Bitmap getAvatar(String avatar, int size) {
if (avatar == null) {
return null;
}
Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
if (bm == null) {
return null;
}
return bm;
}
private static class Dimensions {
public final int width;
public final int height;
Dimensions(int height, int width) {
this.width = width;
this.height = height;
}
public int getMin() {
return Math.min(width, height);
}
public boolean valid() {
return width > 0 && height > 0;
}
}
private static class NotAVideoFile extends Exception {
public NotAVideoFile(Throwable t) {
super(t);
}
public NotAVideoFile() {
super();
}
}
public static class NotAnImageFileException extends Exception {
}
public static class FileCopyException extends Exception {
private int resId;
private FileCopyException(int resId) {
this.resId = resId;
}
public int getResId() {
return resId;
}
}
}
