Checks, if the passed image's dimensions are greater, than acceptable. - Android Graphics

Android examples for Graphics:Image Size

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Description

Checks, if the passed image's dimensions are greater, than acceptable.

Demo Code

/*/*from   w  ww .ja va 2 s  .  c o m*/
 * The MIT License Copyright (c) 2014 Krayushkin Konstantin (jangokvk@gmail.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
//package com.book2s;

import android.graphics.BitmapFactory;

import android.graphics.Point;

public class Main {
    /**
     * Maximum texture size, witch Android could handle. That is, maximum {@link android.graphics.Bitmap}
     * size, witch won't through {@link java.lang.OutOfMemoryError}.
     * <br /><br />
     * <p/>
     * Actually maximum texture size for now is 2048x2048, but here was chosen 2000x2000
     * just in case.
     */
    public static final int MAX_TEXTURE_SIZE = 2000;

    /**
     * Checks, if the passed image's dimensions are greater, than acceptable.
     *
     * @param data raw (not decoded) image data as byte array
     * @see #MAX_TEXTURE_SIZE
     */
    public static boolean isTooBig(byte[] data) {
        final Point size = extractSize(data);
        return (size.x >= MAX_TEXTURE_SIZE || size.y >= MAX_TEXTURE_SIZE);
    }

    /**
     * Looks through the byte array and calculates size of the picture inside it. Operation is very
     * fast, as no actual decoding will be done.
     */
    public static Point extractSize(byte[] data) {
        final BitmapFactory.Options ops = new BitmapFactory.Options();
        ops.inJustDecodeBounds = true;
        BitmapFactory.decodeByteArray(data, 0, data.length, ops);

        return new Point(ops.outWidth, ops.outHeight);
    }
}

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