1 /* 2 * Copyright (C) 2010 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 17 package com.android.camera; 18 19 import android.util.Log; 20 21 import com.android.gallery3d.exif.ExifInterface; 22 23 import java.io.IOException; 24 25 public class Exif { 26 private static final String TAG = "CameraExif"; 27 28 public static ExifInterface getExif(byte[] jpegData) { 29 ExifInterface exif = new ExifInterface(); 30 try { 31 exif.readExif(jpegData); 32 } catch (IOException e) { 33 Log.w(TAG, "Failed to read EXIF data", e); 34 } 35 return exif; 36 } 37 38 // Returns the degrees in clockwise. Values are 0, 90, 180, or 270. 39 public static int getOrientation(ExifInterface exif) { 40 Integer val = exif.getTagIntValue(ExifInterface.TAG_ORIENTATION); 41 if (val == null) { 42 return 0; 43 } else { 44 return ExifInterface.getRotationForOrientationValue(val.shortValue()); 45 } 46 } 47 48 public static int getOrientation(byte[] jpegData) { 49 if (jpegData == null) return 0; 50 51 ExifInterface exif = getExif(jpegData); 52 return getOrientation(exif); 53 } 54 } 55
