IPrint/app/src/main/java/epson/print/Util/ImageFormatIdentifier.java

package epson.print.Util;

import android.graphics.BitmapFactory;

import epson.print.CommonDefine;

public class ImageFormatIdentifier {
    public static final int FILE_FORMAT_BMP = 1;
    public static final int FILE_FORMAT_JPEG = 3;
    public static final int FILE_FORMAT_PNG = 2;
    public static final int FILE_FORMAT_UNKNOWN = 0;

    public static int identifyImageFormat(String str) {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(str, options);
        int mimeTypeToInt = mimeTypeToInt(options);
        if (mimeTypeToInt != 0) {
            return mimeTypeToInt;
        }
        return localIdentifyImageFormat(str);
    }

    public static int mimeTypeToInt(BitmapFactory.Options options) {
        if (options == null || options.outMimeType == null) {
            return 0;
        }
        String str = options.outMimeType;
        if (CommonDefine.IMAGE_TYPE_BMP.equalsIgnoreCase(str)) {
            return 1;
        }
        if ("image/png".equalsIgnoreCase(str)) {
            return 2;
        }
        if ("image/jpeg".equalsIgnoreCase(str)) {
            return 3;
        }
        return 0;
    }

    public static int localIdentifyImageFormat(String str) {
        return new BmpFileInfo().readParams(str) ? 1 : 0;
    }
}