package eu.siacs.conversations.persistance; import java.io.File; 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 android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.util.Log; import android.util.LruCache; import eu.siacs.conversations.R; import eu.siacs.conversations.entities.Conversation; import eu.siacs.conversations.entities.Message; import eu.siacs.conversations.xmpp.jingle.JingleFile; public class FileBackend { private static int IMAGE_SIZE = 1920; private Context context; private LruCache thumbnailCache; public FileBackend(Context context) { this.context = context; int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024); int cacheSize = maxMemory / 8; thumbnailCache = new LruCache(cacheSize) { @Override protected int sizeOf(String key, Bitmap bitmap) { return bitmap.getByteCount() / 1024; } }; } public LruCache getThumbnailCache() { return thumbnailCache; } public JingleFile getJingleFile(Message message) { return getJingleFile(message, true); } public JingleFile getJingleFile(Message message, boolean decrypted) { Conversation conversation = message.getConversation(); String prefix = context.getFilesDir().getAbsolutePath(); String path = prefix + "/" + conversation.getAccount().getJid() + "/" + conversation.getContactJid(); String filename; if ((decrypted) || (message.getEncryption() == Message.ENCRYPTION_NONE)) { filename = message.getUuid() + ".webp"; } else { filename = message.getUuid() + ".webp.pgp"; } return new JingleFile(path + "/" + filename); } public Bitmap resize(Bitmap originalBitmap, int size) { int w = originalBitmap.getWidth(); int h = originalBitmap.getHeight(); if (Math.max(w, h) > size) { int scalledW; int scalledH; if (w <= h) { scalledW = (int) (w / ((double) h / size)); scalledH = size; } else { scalledW = size; scalledH = (int) (h / ((double) w / size)); } Bitmap scalledBitmap = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true); return scalledBitmap; } else { return originalBitmap; } } public JingleFile copyImageToPrivateStorage(Message message, Uri image) throws ImageCopyException { try { InputStream is; if (image != null) { is = context.getContentResolver().openInputStream(image); } else { is = new FileInputStream(getIncomingFile()); } JingleFile file = getJingleFile(message); file.getParentFile().mkdirs(); file.createNewFile(); OutputStream os = new FileOutputStream(file); Bitmap originalBitmap = BitmapFactory.decodeStream(is); if (originalBitmap == null) { os.close(); throw new ImageCopyException(R.string.error_not_an_image_file); } is.close(); if (image == null) { getIncomingFile().delete(); } Bitmap scalledBitmap = resize(originalBitmap, IMAGE_SIZE); boolean success = scalledBitmap.compress( Bitmap.CompressFormat.WEBP, 75, os); if (!success) { throw new ImageCopyException(R.string.error_compressing_image); } os.flush(); os.close(); long size = file.getSize(); int width = scalledBitmap.getWidth(); int height = scalledBitmap.getHeight(); message.setBody("" + size + "," + width + "," + height); return file; } catch (FileNotFoundException e) { throw new ImageCopyException(R.string.error_file_not_found); } catch (IOException e) { throw new ImageCopyException(R.string.error_io_exception); } catch (SecurityException e) { throw new ImageCopyException( R.string.error_security_exception_during_image_copy); } } public Bitmap getImageFromMessage(Message message) { return BitmapFactory.decodeFile(getJingleFile(message) .getAbsolutePath()); } public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws FileNotFoundException { Bitmap thumbnail = thumbnailCache.get(message.getUuid()); if ((thumbnail == null) && (!cacheOnly)) { Bitmap fullsize = BitmapFactory.decodeFile(getJingleFile(message) .getAbsolutePath()); if (fullsize == null) { throw new FileNotFoundException(); } thumbnail = resize(fullsize, size); this.thumbnailCache.put(message.getUuid(), thumbnail); } return thumbnail; } public void removeFiles(Conversation conversation) { String prefix = context.getFilesDir().getAbsolutePath(); String path = prefix + "/" + conversation.getAccount().getJid() + "/" + conversation.getContactJid(); File file = new File(path); try { this.deleteFile(file); } catch (IOException e) { Log.d("xmppService", "error deleting file: " + file.getAbsolutePath()); } } private void deleteFile(File f) throws IOException { if (f.isDirectory()) { for (File c : f.listFiles()) deleteFile(c); } f.delete(); } public File getIncomingFile() { return new File(context.getFilesDir().getAbsolutePath() + "/incoming"); } public class ImageCopyException extends Exception { private static final long serialVersionUID = -1010013599132881427L; private int resId; public ImageCopyException(int resId) { this.resId = resId; } public int getResId() { return resId; } } }