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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.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
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. */
public class ImagePersistWorker implements Worker<Void, Result> {
private int width;
private int height;
private final float heightPercent;
private final byte[] bytes;
private final Context context;
@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);
this.width = width;
this.height = height;
this.heightPercent = heightPercent;
this.bytes = bytes;
this.context = context;
}
@Override
public Result doInBackground(Void unused) throws Exception {
File outputFile = DialerUtils.createShareableFile(context);
try (OutputStream outputStream = new FileOutputStream(outputFile)) {
writeClippedBitmap(outputStream);
}
return Result.builder()
.setUri(
FileProvider.getUriForFile(
context, Constants.get().getFileProviderAuthority(), outputFile))
.setWidth(width)
.setHeight(height)
.build();
}
private void writeClippedBitmap(OutputStream outputStream) throws IOException {
int orientation = android.media.ExifInterface.ORIENTATION_UNDEFINED;
final ExifInterface exifInterface = new ExifInterface();
try {
exifInterface.readExif(bytes);
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(bytes, 0, bytes.length);
final int clippedWidth;
final int clippedHeight;
if (params.invertDimensions) {
Assert.checkState(width == bitmap.getHeight());
Assert.checkState(height == bitmap.getWidth());
clippedWidth = (int) (height * heightPercent);
clippedHeight = width;
} else {
Assert.checkState(width == bitmap.getWidth());
Assert.checkState(height == bitmap.getHeight());
clippedWidth = width;
clippedHeight = (int) (height * heightPercent);
}
int offsetTop = (bitmap.getHeight() - clippedHeight) / 2;
int offsetLeft = (bitmap.getWidth() - clippedWidth) / 2;
width = clippedWidth;
height = 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();
}
}
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