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/*
* Copyright (C) 2017 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.util;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.support.annotation.VisibleForTesting;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
/** Utility class for resizing images before sending them as enriched call attachments. */
public final class BitmapResizer {
@VisibleForTesting static final int MAX_OUTPUT_RESOLUTION = 640;
/**
* Returns a bitmap that is a resized version of the parameter image. The image will only be
* resized down and sized to be appropriate for an enriched call.
*
* @param image to be resized
* @param rotation degrees to rotate the image clockwise
* @return resized image
*/
public static Bitmap resizeForEnrichedCalling(Bitmap image, int rotation) {
Assert.isWorkerThread();
int width = image.getWidth();
int height = image.getHeight();
Matrix matrix = new Matrix();
matrix.postRotate(rotation);
LogUtil.i(
"BitmapResizer.resizeForEnrichedCalling", "starting height: %d, width: %d", height, width);
if (width <= MAX_OUTPUT_RESOLUTION && height <= MAX_OUTPUT_RESOLUTION) {
LogUtil.i("BitmapResizer.resizeForEnrichedCalling", "no resizing needed");
return Bitmap.createBitmap(image, 0, 0, width, height, matrix, true);
}
float ratio = 1;
if (width > height) {
// landscape
ratio = MAX_OUTPUT_RESOLUTION / (float) width;
} else {
// portrait & square
ratio = MAX_OUTPUT_RESOLUTION / (float) height;
}
LogUtil.i(
"BitmapResizer.resizeForEnrichedCalling",
"ending height: %f, width: %f",
height * ratio,
width * ratio);
matrix.postScale(ratio, ratio);
return Bitmap.createBitmap(image, 0, 0, width, height, matrix, true);
}
}
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