The Tor Browser: mobile/android/thirdparty/com/squareup/picasso/BitmapHunter.java@fc2d59ddac77 (annotated)

mobile/android/thirdparty/com/squareup/picasso/BitmapHunter.java@fc2d59ddac77 (annotated)

mobile/android/thirdparty/com/squareup/picasso/BitmapHunter.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /*
  * Copyright (C) 2013 Square, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package com.squareup.picasso;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Matrix;
 import android.net.NetworkInfo;
 import android.net.Uri;
 import android.provider.MediaStore;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.Future;
 import static android.content.ContentResolver.SCHEME_ANDROID_RESOURCE;
 import static android.content.ContentResolver.SCHEME_CONTENT;
 import static android.content.ContentResolver.SCHEME_FILE;
 import static android.provider.ContactsContract.Contacts;
 import static com.squareup.picasso.Picasso.LoadedFrom.MEMORY;
 abstract class BitmapHunter implements Runnable {
   /**
    * Global lock for bitmap decoding to ensure that we are only are decoding one at a time. Since
    * this will only ever happen in background threads we help avoid excessive memory thrashing as
    * well as potential OOMs. Shamelessly stolen from Volley.
    */
   private static final Object DECODE_LOCK = new Object();
   private static final String ANDROID_ASSET = "android_asset";
   protected static final int ASSET_PREFIX_LENGTH =
       (SCHEME_FILE + ":///" + ANDROID_ASSET + "/").length();
   final Picasso picasso;
   final Dispatcher dispatcher;
   final Cache cache;
   final Stats stats;
   final String key;
   final Request data;
   final List<Action> actions;
   final boolean skipMemoryCache;
   Bitmap result;
   Future<?> future;
   Picasso.LoadedFrom loadedFrom;
   Exception exception;
   int exifRotation; // Determined during decoding of original resource.
   BitmapHunter(Picasso picasso, Dispatcher dispatcher, Cache cache, Stats stats, Action action) {
     this.picasso = picasso;
     this.dispatcher = dispatcher;
     this.cache = cache;
     this.stats = stats;
     this.key = action.getKey();
     this.data = action.getData();
     this.skipMemoryCache = action.skipCache;
     this.actions = new ArrayList<Action>(4);
     attach(action);
   }
   protected void setExifRotation(int exifRotation) {
     this.exifRotation = exifRotation;
   }
   @Override public void run() {
     try {
       Thread.currentThread().setName(Utils.THREAD_PREFIX + data.getName());
       result = hunt();
       if (result == null) {
         dispatcher.dispatchFailed(this);
       } else {
         dispatcher.dispatchComplete(this);
       }
     } catch (Downloader.ResponseException e) {
       exception = e;
       dispatcher.dispatchFailed(this);
     } catch (IOException e) {
       exception = e;
       dispatcher.dispatchRetry(this);
     } catch (OutOfMemoryError e) {
       StringWriter writer = new StringWriter();
       stats.createSnapshot().dump(new PrintWriter(writer));
       exception = new RuntimeException(writer.toString(), e);
       dispatcher.dispatchFailed(this);
     } catch (Exception e) {
       exception = e;
       dispatcher.dispatchFailed(this);
     } finally {
       Thread.currentThread().setName(Utils.THREAD_IDLE_NAME);
     }
   }
   abstract Bitmap decode(Request data) throws IOException;
   Bitmap hunt() throws IOException {
     Bitmap bitmap;
     if (!skipMemoryCache) {
       bitmap = cache.get(key);
       if (bitmap != null) {
         stats.dispatchCacheHit();
         loadedFrom = MEMORY;
         return bitmap;
       }
     }
     bitmap = decode(data);
     if (bitmap != null) {
       stats.dispatchBitmapDecoded(bitmap);
       if (data.needsTransformation() || exifRotation != 0) {
         synchronized (DECODE_LOCK) {
           if (data.needsMatrixTransform() || exifRotation != 0) {
             bitmap = transformResult(data, bitmap, exifRotation);
           }
           if (data.hasCustomTransformations()) {
             bitmap = applyCustomTransformations(data.transformations, bitmap);
           }
         }
         stats.dispatchBitmapTransformed(bitmap);
       }
     }
     return bitmap;
   }
   void attach(Action action) {
     actions.add(action);
   }
   void detach(Action action) {
     actions.remove(action);
   }
   boolean cancel() {
     return actions.isEmpty() && future != null && future.cancel(false);
   }
   boolean isCancelled() {
     return future != null && future.isCancelled();
   }
   boolean shouldSkipMemoryCache() {
     return skipMemoryCache;
   }
   boolean shouldRetry(boolean airplaneMode, NetworkInfo info) {
     return false;
   }
   Bitmap getResult() {
     return result;
   }
   String getKey() {
     return key;
   }
   Request getData() {
     return data;
   }
   List<Action> getActions() {
     return actions;
   }
   Exception getException() {
     return exception;
   }
   Picasso.LoadedFrom getLoadedFrom() {
     return loadedFrom;
   }
   static BitmapHunter forRequest(Context context, Picasso picasso, Dispatcher dispatcher,
       Cache cache, Stats stats, Action action, Downloader downloader) {
     if (action.getData().resourceId != 0) {
       return new ResourceBitmapHunter(context, picasso, dispatcher, cache, stats, action);
     }
     Uri uri = action.getData().uri;
     String scheme = uri.getScheme();
     if (SCHEME_CONTENT.equals(scheme)) {
       if (Contacts.CONTENT_URI.getHost().equals(uri.getHost()) //
           && !uri.getPathSegments().contains(Contacts.Photo.CONTENT_DIRECTORY)) {
         return new ContactsPhotoBitmapHunter(context, picasso, dispatcher, cache, stats, action);
       } else if (MediaStore.AUTHORITY.equals(uri.getAuthority())) {
         return new MediaStoreBitmapHunter(context, picasso, dispatcher, cache, stats, action);
       } else {
         return new ContentStreamBitmapHunter(context, picasso, dispatcher, cache, stats, action);
       }
     } else if (SCHEME_FILE.equals(scheme)) {
       if (!uri.getPathSegments().isEmpty() && ANDROID_ASSET.equals(uri.getPathSegments().get(0))) {
         return new AssetBitmapHunter(context, picasso, dispatcher, cache, stats, action);
       }
       return new FileBitmapHunter(context, picasso, dispatcher, cache, stats, action);
     } else if (SCHEME_ANDROID_RESOURCE.equals(scheme)) {
       return new ResourceBitmapHunter(context, picasso, dispatcher, cache, stats, action);
     } else {
       return new NetworkBitmapHunter(picasso, dispatcher, cache, stats, action, downloader);
     }
   }
   static void calculateInSampleSize(int reqWidth, int reqHeight, BitmapFactory.Options options) {
     calculateInSampleSize(reqWidth, reqHeight, options.outWidth, options.outHeight, options);
   }
   static void calculateInSampleSize(int reqWidth, int reqHeight, int width, int height,
       BitmapFactory.Options options) {
     int sampleSize = 1;
     if (height > reqHeight || width > reqWidth) {
       final int heightRatio = Math.round((float) height / (float) reqHeight);
       final int widthRatio = Math.round((float) width / (float) reqWidth);
       sampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
     }
     options.inSampleSize = sampleSize;
     options.inJustDecodeBounds = false;
   }
   static Bitmap applyCustomTransformations(List<Transformation> transformations, Bitmap result) {
     for (int i = 0, count = transformations.size(); i < count; i++) {
       final Transformation transformation = transformations.get(i);
       Bitmap newResult = transformation.transform(result);
       if (newResult == null) {
         final StringBuilder builder = new StringBuilder() //
             .append("Transformation ")
             .append(transformation.key())
             .append(" returned null after ")
             .append(i)
             .append(" previous transformation(s).\n\nTransformation list:\n");
         for (Transformation t : transformations) {
           builder.append(t.key()).append('\n');
         }
         Picasso.HANDLER.post(new Runnable() {
           @Override public void run() {
             throw new NullPointerException(builder.toString());
           }
         });
         return null;
       }
       if (newResult == result && result.isRecycled()) {
         Picasso.HANDLER.post(new Runnable() {
           @Override public void run() {
             throw new IllegalStateException("Transformation "
                 + transformation.key()
                 + " returned input Bitmap but recycled it.");
           }
         });
         return null;
       }
       // If the transformation returned a new bitmap ensure they recycled the original.
       if (newResult != result && !result.isRecycled()) {
         Picasso.HANDLER.post(new Runnable() {
           @Override public void run() {
             throw new IllegalStateException("Transformation "
                 + transformation.key()
                 + " mutated input Bitmap but failed to recycle the original.");
           }
         });
         return null;
       }
       result = newResult;
     }
     return result;
   }
   static Bitmap transformResult(Request data, Bitmap result, int exifRotation) {
     int inWidth = result.getWidth();
     int inHeight = result.getHeight();
     int drawX = 0;
     int drawY = 0;
     int drawWidth = inWidth;
     int drawHeight = inHeight;
     Matrix matrix = new Matrix();
     if (data.needsMatrixTransform()) {
       int targetWidth = data.targetWidth;
       int targetHeight = data.targetHeight;
       float targetRotation = data.rotationDegrees;
       if (targetRotation != 0) {
         if (data.hasRotationPivot) {
           matrix.setRotate(targetRotation, data.rotationPivotX, data.rotationPivotY);
         } else {
           matrix.setRotate(targetRotation);
         }
       }
       if (data.centerCrop) {
         float widthRatio = targetWidth / (float) inWidth;
         float heightRatio = targetHeight / (float) inHeight;
         float scale;
         if (widthRatio > heightRatio) {
           scale = widthRatio;
           int newSize = (int) Math.ceil(inHeight * (heightRatio / widthRatio));
           drawY = (inHeight - newSize) / 2;
           drawHeight = newSize;
         } else {
           scale = heightRatio;
           int newSize = (int) Math.ceil(inWidth * (widthRatio / heightRatio));
           drawX = (inWidth - newSize) / 2;
           drawWidth = newSize;
         }
         matrix.preScale(scale, scale);
       } else if (data.centerInside) {
         float widthRatio = targetWidth / (float) inWidth;
         float heightRatio = targetHeight / (float) inHeight;
         float scale = widthRatio < heightRatio ? widthRatio : heightRatio;
         matrix.preScale(scale, scale);
       } else if (targetWidth != 0 && targetHeight != 0 //
           && (targetWidth != inWidth || targetHeight != inHeight)) {
         // If an explicit target size has been specified and they do not match the results bounds,
         // pre-scale the existing matrix appropriately.
         float sx = targetWidth / (float) inWidth;
         float sy = targetHeight / (float) inHeight;
         matrix.preScale(sx, sy);
       }
     }
     if (exifRotation != 0) {
       matrix.preRotate(exifRotation);
     }
     Bitmap newResult =
         Bitmap.createBitmap(result, drawX, drawY, drawWidth, drawHeight, matrix, true);
     if (newResult != result) {
       result.recycle();
       result = newResult;
     }
     return result;
   }
 }

The Tor Browser / annotate

mobile/android/thirdparty/com/squareup/picasso/BitmapHunter.java@fc2d59ddac77 (annotated)

mobile/android/thirdparty/com/squareup/picasso/BitmapHunter.java