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Diffstat (limited to '')
-rw-r--r-- | src/eu/siacs/conversations/persistance/FileBackend.java | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/eu/siacs/conversations/persistance/FileBackend.java b/src/eu/siacs/conversations/persistance/FileBackend.java new file mode 100644 index 00000000..f7f986f2 --- /dev/null +++ b/src/eu/siacs/conversations/persistance/FileBackend.java @@ -0,0 +1,113 @@ +package eu.siacs.conversations.persistance; + +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.LruCache; + +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<String, Bitmap> thumbnailCache; + + public FileBackend(Context context) { + this.context = context; + + int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024); + int cacheSize = maxMemory / 8; + thumbnailCache = new LruCache<String, Bitmap>(cacheSize) { + @Override + protected int sizeOf(String key, Bitmap bitmap) { + return bitmap.getByteCount() / 1024; + } + }; + + } + + public JingleFile getJingleFile(Message message) { + Conversation conversation = message.getConversation(); + String prefix = context.getFilesDir().getAbsolutePath(); + String path = prefix + "/" + conversation.getAccount().getJid() + "/" + + conversation.getContactJid(); + String filename = message.getUuid() + ".webp"; + return new JingleFile(path + "/" + filename); + } + + private 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) { + try { + InputStream is = context.getContentResolver() + .openInputStream(image); + JingleFile file = getJingleFile(message); + file.getParentFile().mkdirs(); + file.createNewFile(); + OutputStream os = new FileOutputStream(file); + Bitmap originalBitmap = BitmapFactory.decodeStream(is); + is.close(); + Bitmap scalledBitmap = resize(originalBitmap, IMAGE_SIZE); + boolean success = scalledBitmap.compress(Bitmap.CompressFormat.WEBP,75,os); + if (!success) { + //Log.d("xmppService", "couldnt compress"); + } + os.close(); + return file; + } catch (FileNotFoundException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } catch (IOException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + + return null; + } + + public Bitmap getImageFromMessage(Message message) { + return BitmapFactory + .decodeFile(getJingleFile(message).getAbsolutePath()); + } + + public Bitmap getThumbnailFromMessage(Message message, int size) { + Bitmap thumbnail = thumbnailCache.get(message.getUuid()); + if (thumbnail==null) { + Bitmap fullsize = BitmapFactory.decodeFile(getJingleFile(message) + .getAbsolutePath()); + thumbnail = resize(fullsize, size); + this.thumbnailCache.put(message.getUuid(), thumbnail); + } + return thumbnail; + } +} |