1 files changed, 153 insertions, 0 deletions
diff --git a/java/com/android/dialer/callcomposer/camera/ImagePersistWorker.java b/java/com/android/dialer/callcomposer/camera/ImagePersistWorker.java
new file mode 100644
index 000000000..26b0bde00
--- /dev/null
+++ b/java/com/android/dialer/callcomposer/camera/ImagePersistWorker.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.android.dialer.callcomposer.camera;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+import android.os.Build.VERSION_CODES;
+import android.support.annotation.NonNull;
+import android.support.v4.content.FileProvider;
+import com.android.dialer.callcomposer.camera.ImagePersistWorker.Result;
+import com.android.dialer.callcomposer.camera.exif.ExifInterface;
+import com.android.dialer.callcomposer.util.BitmapResizer;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.concurrent.DialerExecutor.Worker;
+import com.android.dialer.constants.Constants;
+import com.android.dialer.util.DialerUtils;
+import com.google.auto.value.AutoValue;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/** Persisting image routine. */
+@TargetApi(VERSION_CODES.M)
+public class ImagePersistWorker implements Worker<Void, Result> {
+  private int mWidth;
+  private int mHeight;
+  private final float mHeightPercent;
+  private final byte[] mBytes;
+  private final Context mContext;
+
+  @AutoValue
+  abstract static class Result {
+
+    public static Builder builder() {
+      return new AutoValue_ImagePersistWorker_Result.Builder();
+    }
+
+    @NonNull
+    abstract Uri getUri();
+
+    abstract int getWidth();
+
+    abstract int getHeight();
+
+    @AutoValue.Builder
+    abstract static class Builder {
+      abstract Builder setUri(@NonNull Uri uri);
+
+      abstract Builder setWidth(int width);
+
+      abstract Builder setHeight(int height);
+
+      abstract Result build();
+    }
+  }
+
+  ImagePersistWorker(
+      final int width,
+      final int height,
+      final float heightPercent,
+      final byte[] bytes,
+      final Context context) {
+    Assert.checkArgument(heightPercent >= 0 && heightPercent <= 1);
+    Assert.isNotNull(bytes);
+    Assert.isNotNull(context);
+    mWidth = width;
+    mHeight = height;
+    mHeightPercent = heightPercent;
+    mBytes = bytes;
+    mContext = context;
+  }
+
+  @Override
+  public Result doInBackground(Void unused) throws Exception {
+    File outputFile = DialerUtils.createShareableFile(mContext);
+
+    try (OutputStream outputStream = new FileOutputStream(outputFile)) {
+      writeClippedBitmap(outputStream);
+    }
+
+    return Result.builder()
+        .setUri(
+            FileProvider.getUriForFile(
+                mContext, Constants.get().getFileProviderAuthority(), outputFile))
+        .setWidth(mWidth)
+        .setHeight(mHeight)
+        .build();
+  }
+
+  private void writeClippedBitmap(OutputStream outputStream) throws IOException {
+    int orientation = android.media.ExifInterface.ORIENTATION_UNDEFINED;
+    final ExifInterface exifInterface = new ExifInterface();
+    try {
+      exifInterface.readExif(mBytes);
+      final Integer orientationValue = exifInterface.getTagIntValue(ExifInterface.TAG_ORIENTATION);
+      if (orientationValue != null) {
+        orientation = orientationValue.intValue();
+      }
+    } catch (final IOException e) {
+      // Couldn't get exif tags, not the end of the world
+    }
+
+    ExifInterface.OrientationParams params = ExifInterface.getOrientationParams(orientation);
+    Bitmap bitmap = BitmapFactory.decodeByteArray(mBytes, 0, mBytes.length);
+    final int clippedWidth;
+    final int clippedHeight;
+    if (params.invertDimensions) {
+      Assert.checkState(mWidth == bitmap.getHeight());
+      Assert.checkState(mHeight == bitmap.getWidth());
+      clippedWidth = (int) (mHeight * mHeightPercent);
+      clippedHeight = mWidth;
+    } else {
+      Assert.checkState(mWidth == bitmap.getWidth());
+      Assert.checkState(mHeight == bitmap.getHeight());
+      clippedWidth = mWidth;
+      clippedHeight = (int) (mHeight * mHeightPercent);
+    }
+
+    int offsetTop = (bitmap.getHeight() - clippedHeight) / 2;
+    int offsetLeft = (bitmap.getWidth() - clippedWidth) / 2;
+    mWidth = clippedWidth;
+    mHeight = clippedHeight;
+
+    Bitmap clippedBitmap =
+        Bitmap.createBitmap(bitmap, offsetLeft, offsetTop, clippedWidth, clippedHeight);
+    clippedBitmap = BitmapResizer.resizeForEnrichedCalling(clippedBitmap, params.rotation);
+    // EXIF data can take a big chunk of the file size and we've already manually rotated our image,
+    // so remove all of the exif data.
+    exifInterface.clearExif();
+    exifInterface.writeExif(clippedBitmap, outputStream);
+
+    clippedBitmap.recycle();
+    bitmap.recycle();
+  }
+}