Decodes the dimension of a bitmap. - Android Graphics

Android examples for Graphics:Bitmap Effect

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Description

Decodes the dimension of a bitmap.

Demo Code

/*//  ww w.j av a2  s  .c o  m
 * Copyright (C) 2014 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.
 */
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.Point;
import android.media.MediaMetadataRetriever;
import com.android.camera.debug.Log;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.khronos.opengles.GL11;

public class Main{
    private static final Log.Tag TAG = new Log.Tag("LocalDataUtil");
    /**
     * Decodes the dimension of a bitmap.
     *
     * @param path The path to the bitmap.
     * @return The decoded width/height is stored in Point.x/Point.y
     *         respectively.
     */
    public static Point decodeBitmapDimension(String path) {
        Point size = null;
        InputStream is = null;
        try {
            is = new FileInputStream(path);
            size = decodeBitmapDimension(is);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                }
            }
        }
        return size;
    }
    /**
     * Decodes the dimension of a bitmap.
     *
     * @param is An input stream with the data of the bitmap.
     * @return The decoded width/height is stored in Point.x/Point.y
     *         respectively.
     */
    public static Point decodeBitmapDimension(InputStream is) {
        Point size = null;
        BitmapFactory.Options justBoundsOpts = new BitmapFactory.Options();
        justBoundsOpts.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(is, null, justBoundsOpts);
        if (justBoundsOpts.outWidth > 0 && justBoundsOpts.outHeight > 0) {
            size = new Point(justBoundsOpts.outWidth,
                    justBoundsOpts.outHeight);
        } else {
            Log.e(TAG, "Bitmap dimension decoding failed");
        }
        return size;
    }
}

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