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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.android.gallery3d.exif;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
public class ExifOutputStreamTest extends ExifXmlDataTestCase {
public ExifOutputStreamTest(int imgRes, int xmlRes) {
super(imgRes, xmlRes);
}
public ExifOutputStreamTest(String imgPath, String xmlPath) {
super(imgPath, xmlPath);
}
public void testExifOutputStream() throws Exception {
File file = File.createTempFile("exif_test", ".jpg");
InputStream imageInputStream = null;
InputStream exifInputStream = null;
FileInputStream reDecodeInputStream = null;
FileInputStream reParseInputStream = null;
try {
try {
byte[] imgData = readToByteArray(getImageInputStream());
imageInputStream = new ByteArrayInputStream(imgData);
exifInputStream = new ByteArrayInputStream(imgData);
// Read the image data
Bitmap bmp = BitmapFactory.decodeStream(imageInputStream);
// Read exif data
ExifData exifData = new ExifReader().read(exifInputStream);
// Encode the image with the exif data
FileOutputStream outputStream = new FileOutputStream(file);
ExifOutputStream exifOutputStream = new ExifOutputStream(outputStream);
exifOutputStream.setExifData(exifData);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, exifOutputStream);
exifOutputStream.close();
// Re-decode the temp file and check the data.
reDecodeInputStream = new FileInputStream(file);
Bitmap decodedBmp = BitmapFactory.decodeStream(reDecodeInputStream);
assertNotNull(getImageTitle(), decodedBmp);
// Re-parse the temp file the check EXIF tag
reParseInputStream = new FileInputStream(file);
ExifData reExifData = new ExifReader().read(reParseInputStream);
assertEquals(getImageTitle(), exifData, reExifData);
} finally {
Util.closeSilently(imageInputStream);
Util.closeSilently(exifInputStream);
Util.closeSilently(reDecodeInputStream);
Util.closeSilently(reParseInputStream);
}
} catch (Exception e) {
throw new Exception(getImageTitle(), e);
}
}
private byte[] readToByteArray(InputStream is) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int len;
byte[] buf = new byte[1024];
while ((len = is.read(buf)) > -1) {
bos.write(buf, 0, len);
}
bos.flush();
return bos.toByteArray();
}
}
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