1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.android.devcamera;
17 
18 import android.graphics.Bitmap;
19 import android.graphics.BitmapFactory;
20 import android.graphics.Matrix;
21 import android.media.Image;
22 
23 import java.nio.ByteBuffer;
24 
25 /**
26  * Some Bitmap utility functions.
27  */
28 public class BitmapUtility {
29 
bitmapFromJpeg(byte[] data)30     public static Bitmap bitmapFromJpeg(byte[] data) {
31         // 32K buffer.
32         byte[] decodeBuffer = new byte[32 * 1024]; // 32K buffer.
33 
34         BitmapFactory.Options opts = new BitmapFactory.Options();
35         opts.inSampleSize = 16; // 3264 / 16 = 204.
36         opts.inTempStorage = decodeBuffer;
37         Bitmap b = BitmapFactory.decodeByteArray(data, 0, data.length, opts);
38 
39         return rotatedBitmap(b);
40     }
41 
bitmapFromYuvImage(Image img)42     public static Bitmap bitmapFromYuvImage(Image img) {
43         int w = img.getWidth();
44         int h = img.getHeight();
45         ByteBuffer buf0 = img.getPlanes()[0].getBuffer();
46         int len = buf0.capacity();
47         int[] colors = new int[len];
48         int alpha = 255 << 24;
49         int green;
50         for (int i = 0; i < len; i++) {
51             green = ((int) buf0.get(i)) & 255;
52             colors[i] = green << 16 | green << 8 | green | alpha;
53         }
54         Bitmap b = Bitmap.createBitmap(colors, w, h, Bitmap.Config.ARGB_8888);
55 
56         return rotatedBitmap(b);
57     }
58 
59     /**
60      * Returns parameter bitmap rotated 90 degrees
61      */
rotatedBitmap(Bitmap b)62     private static Bitmap rotatedBitmap(Bitmap b) {
63         Matrix mat = new Matrix();
64         mat.postRotate(90);
65         Bitmap b2 = Bitmap.createBitmap(b, 0, 0,b.getWidth(),b.getHeight(), mat, true);
66         return b2;
67     }
68 
69 }
70