package cn.flightfeather.thirdapp.util.photo;
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import android.media.ExifInterface;
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/**
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* Super basic exif utilities.
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*/
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public class ExifHelper {
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/**
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* Maps an {@link ExifInterface} orientation value
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* to the actual degrees.
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*/
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public static int getOrientation(int exifOrientation) {
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int orientation;
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switch (exifOrientation) {
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case ExifInterface.ORIENTATION_NORMAL:
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case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
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orientation = 0; break;
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case ExifInterface.ORIENTATION_ROTATE_180:
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case ExifInterface.ORIENTATION_FLIP_VERTICAL:
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orientation = 180; break;
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case ExifInterface.ORIENTATION_ROTATE_90:
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case ExifInterface.ORIENTATION_TRANSPOSE:
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orientation = 90; break;
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case ExifInterface.ORIENTATION_ROTATE_270:
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case ExifInterface.ORIENTATION_TRANSVERSE:
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orientation = 270; break;
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default: orientation = 0;
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}
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return orientation;
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}
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/**
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* Maps a degree value to {@link ExifInterface} constant.
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*/
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public static int getExifOrientation(int orientation) {
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switch ((orientation + 360) % 360) {
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case 0: return ExifInterface.ORIENTATION_NORMAL;
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case 90: return ExifInterface.ORIENTATION_ROTATE_90;
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case 180: return ExifInterface.ORIENTATION_ROTATE_180;
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case 270: return ExifInterface.ORIENTATION_ROTATE_270;
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default: throw new IllegalArgumentException("Invalid orientation: " + orientation);
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}
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}
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}
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