1 files changed, 143 insertions, 0 deletions
diff --git a/java/com/android/dialer/callcomposer/camera/ImagePersistTask.java b/java/com/android/dialer/callcomposer/camera/ImagePersistTask.java
new file mode 100644
index 000000000..150009495
--- /dev/null
+++ b/java/com/android/dialer/callcomposer/camera/ImagePersistTask.java
@@ -0,0 +1,143 @@
+/*
+ * 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.graphics.Canvas;
+import android.graphics.Matrix;
+import android.net.Uri;
+import android.os.Build.VERSION_CODES;
+import android.support.v4.content.FileProvider;
+import com.android.dialer.callcomposer.camera.exif.ExifInterface;
+import com.android.dialer.callcomposer.camera.exif.ExifTag;
+import com.android.dialer.callcomposer.util.CopyAndResizeImageTask;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.FallibleAsyncTask;
+import com.android.dialer.constants.Constants;
+import com.android.dialer.util.DialerUtils;
+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 ImagePersistTask extends FallibleAsyncTask<Void, Void, Uri> {
+  private int mWidth;
+  private int mHeight;
+  private final float mHeightPercent;
+  private final byte[] mBytes;
+  private final Context mContext;
+  private final CameraManager.MediaCallback mCallback;
+
+  ImagePersistTask(
+      final int width,
+      final int height,
+      final float heightPercent,
+      final byte[] bytes,
+      final Context context,
+      final CameraManager.MediaCallback callback) {
+    Assert.checkArgument(heightPercent >= 0 && heightPercent <= 1);
+    Assert.isNotNull(bytes);
+    Assert.isNotNull(context);
+    Assert.isNotNull(callback);
+    mWidth = width;
+    mHeight = height;
+    mHeightPercent = heightPercent;
+    mBytes = bytes;
+    mContext = context;
+    mCallback = callback;
+  }
+
+  @Override
+  protected Uri doInBackgroundFallible(final Void... params) throws Exception {
+    File outputFile = DialerUtils.createShareableFile(mContext);
+
+    try (OutputStream outputStream = new FileOutputStream(outputFile)) {
+      if (mHeightPercent != 1.0f) {
+        writeClippedBitmap(outputStream);
+      } else {
+        outputStream.write(mBytes, 0, mBytes.length);
+      }
+    }
+
+    return FileProvider.getUriForFile(
+        mContext, Constants.get().getFileProviderAuthority(), outputFile);
+  }
+
+  @Override
+  protected void onPostExecute(FallibleTaskResult<Uri> result) {
+    if (result.isFailure()) {
+      mCallback.onMediaFailed(new Exception("Persisting image failed", result.getThrowable()));
+    } else {
+      mCallback.onMediaReady(result.getResult(), "image/jpeg", mWidth, mHeight);
+    }
+  }
+
+  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
+    }
+    Bitmap bitmap = BitmapFactory.decodeByteArray(mBytes, 0, mBytes.length);
+    final int clippedWidth;
+    final int clippedHeight;
+    if (ExifInterface.getOrientationParams(orientation).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);
+    }
+    final int offsetTop = (bitmap.getHeight() - clippedHeight) / 2;
+    final int offsetLeft = (bitmap.getWidth() - clippedWidth) / 2;
+    mWidth = clippedWidth;
+    mHeight = clippedHeight;
+    Bitmap clippedBitmap =
+        Bitmap.createBitmap(clippedWidth, clippedHeight, Bitmap.Config.ARGB_8888);
+    clippedBitmap.setDensity(bitmap.getDensity());
+    final Canvas clippedBitmapCanvas = new Canvas(clippedBitmap);
+    final Matrix matrix = new Matrix();
+    matrix.postTranslate(-offsetLeft, -offsetTop);
+    clippedBitmapCanvas.drawBitmap(bitmap, matrix, null /* paint */);
+    clippedBitmapCanvas.save();
+    clippedBitmap = CopyAndResizeImageTask.resizeForEnrichedCalling(clippedBitmap);
+    // EXIF data can take a big chunk of the file size and is often cleared by the
+    // carrier, only store orientation since that's critical
+    final ExifTag orientationTag = exifInterface.getTag(ExifInterface.TAG_ORIENTATION);
+    exifInterface.clearExif();
+    exifInterface.setTag(orientationTag);
+    exifInterface.writeExif(clippedBitmap, outputStream);
+
+    clippedBitmap.recycle();
+    bitmap.recycle();
+  }
+}