pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

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

@@ -0,0 +1,357 @@
+/*
+ * 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;
+  }
+}