content: /*
   * Copyright (C) 2019 Adaptech s.r.o., Robert Pösel
   * Copyright (C) 2011 Google Inc.
   *
   * 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.
   */
  
  package com.googlecode.leptonica.android;
  
  import android.graphics.Bitmap;
  import android.graphics.Bitmap.CompressFormat;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  
  import androidx.annotation.IntRange;
  
  /**
   * JPEG input and output methods.
   *
   * @author alanv@google.com (Alan Viverette)
   */
  @SuppressWarnings("WeakerAccess")
  public class JpegIO {
  	static {
  		System.loadLibrary("jpeg");
  		System.loadLibrary("pngx");
  		System.loadLibrary("leptonica");
  	}
  
  	/**
  	 * Default quality is 85%, which is reasonably good.
  	 */
  	public static final int DEFAULT_QUALITY = 85;
  
  	/**
  	 * Progressive encoding is disabled by default to increase compatibility.
  	 */
  	public static final boolean DEFAULT_PROGRESSIVE = false;
  
  	/**
  	 * Returns a compressed JPEG byte representation of this Pix using default
  	 * parameters.
  	 *
  	 * @param pixs A source Pix image.
  	 * @return a compressed JPEG byte array representation of the Pix
  	 */
  	public static byte[] compressToJpeg(Pix pixs) {
  		return compressToJpeg(pixs, DEFAULT_QUALITY, DEFAULT_PROGRESSIVE);
  	}
  
  	/**
  	 * Returns a compressed JPEG byte representation of this Pix.
  	 *
  	 * @param pixs        A source pix image.
  	 * @param quality     The quality of the compressed image. Valid range is 0-100.
  	 * @param progressive Whether to use progressive compression.
  	 * @return a compressed JPEG byte array representation of the Pix
  	 */
  	public static byte[] compressToJpeg(Pix pixs, @IntRange(from = 0, to = 100) int quality,
  										boolean progressive) {
  		if (pixs == null)
  			throw new IllegalArgumentException("Source pix must be non-null");
  		if (quality < 0 || quality > 100)
  			throw new IllegalArgumentException("Quality must be between 0 and 100 (inclusive)");
  
  		final ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
  		final Bitmap bmp = WriteFile.writeBitmap(pixs);
  		bmp.compress(CompressFormat.JPEG, quality, byteStream);
  		bmp.recycle();
  
  		final byte[] encodedData = byteStream.toByteArray();
  
  		try {
  			byteStream.close();
  		} catch (IOException e) {
  			e.printStackTrace();
  		}
  
  		return encodedData;
  	}
  
  	// ***************
  	// * NATIVE CODE *
  	// ***************
  
  	private static native byte[] nativeCompressToJpeg(
  			long nativePix, int quality, boolean progressive);
  }
  