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/*
* 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.concurrent.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 {
Bitmap bitmap = BitmapFactory.decodeByteArray(mBytes, 0, mBytes.length);
bitmap = CopyAndResizeImageTask.resizeForEnrichedCalling(bitmap);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, outputStream);
}
}
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();
}
}
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