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Diffstat (limited to 'tests/src/com/android/gallery3d/jpegstream/JpegStreamWriterTest.java')
-rw-r--r--tests/src/com/android/gallery3d/jpegstream/JpegStreamWriterTest.java138
1 files changed, 138 insertions, 0 deletions
diff --git a/tests/src/com/android/gallery3d/jpegstream/JpegStreamWriterTest.java b/tests/src/com/android/gallery3d/jpegstream/JpegStreamWriterTest.java
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index 000000000..befba4ccd
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+++ b/tests/src/com/android/gallery3d/jpegstream/JpegStreamWriterTest.java
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2013 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.jpegstream;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Environment;
+import android.util.Log;
+
+import com.android.gallery3d.common.Utils;
+import com.android.gallery3d.tests.R;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.nio.ByteBuffer;
+
+public class JpegStreamWriterTest extends JpegStreamTestCase {
+ public static final String TAG = "JpegStreamWriterTest";
+ private JPEGOutputStream mStream;
+ private ByteArrayOutputStream mWrappedStream;
+ private Bitmap mBitmap;
+ private Bitmap mControl;
+
+ // galaxy_nexus.jpg image compressed with q=20
+ private static final int CONTROL_RID = R.raw.jpeg_control;
+
+ public JpegStreamWriterTest(int imageRes) {
+ super(imageRes);
+ }
+
+ @Override
+ public void setUp() throws Exception {
+ super.setUp();
+ mBitmap = BitmapFactory.decodeStream(getImageInputStream());
+ mControl = BitmapFactory.decodeStream(openResource(CONTROL_RID));
+ mWrappedStream = new ByteArrayOutputStream();
+
+ }
+
+ @Override
+ public void tearDown() throws Exception {
+ super.tearDown();
+ Utils.closeSilently(mStream);
+ Utils.closeSilently(mWrappedStream);
+ mWrappedStream = null;
+ mStream = null;
+ if (mBitmap != null) {
+ mBitmap.recycle();
+ mBitmap = null;
+ }
+ if (mControl != null) {
+ mControl.recycle();
+ mControl = null;
+ }
+ }
+
+ public void testBasicWrites() throws Exception {
+ assertTrue(mBitmap != null);
+ int width = mBitmap.getWidth();
+ int height = mBitmap.getHeight();
+ mStream = new JPEGOutputStream(mWrappedStream, width,
+ height, 20, JpegConfig.FORMAT_RGBA);
+
+ // Put bitmap pixels into a byte array (format is RGBA).
+ int rowLength = width * StreamUtils.pixelSize(JpegConfig.FORMAT_RGBA);
+ int size = height * rowLength;
+ byte[] byteArray = new byte[size];
+ ByteBuffer buf = ByteBuffer.wrap(byteArray);
+ mBitmap.copyPixelsToBuffer(buf);
+
+ // Write out whole array
+ mStream.write(byteArray, 0, byteArray.length);
+ mStream.close();
+
+ // Get compressed jpeg output
+ byte[] compressed = mWrappedStream.toByteArray();
+
+ // Check jpeg
+ ByteArrayInputStream inStream = new ByteArrayInputStream(compressed);
+ Bitmap test = BitmapFactory.decodeStream(inStream);
+ assertTrue(test != null);
+ assertTrue(test.sameAs(mControl));
+ }
+
+ public void testStreamingWrites() throws Exception {
+ assertTrue(mBitmap != null);
+ int width = mBitmap.getWidth();
+ int height = mBitmap.getHeight();
+ mStream = new JPEGOutputStream(mWrappedStream, width,
+ height, 20, JpegConfig.FORMAT_RGBA);
+
+ // Put bitmap pixels into a byte array (format is RGBA).
+ int rowLength = width * StreamUtils.pixelSize(JpegConfig.FORMAT_RGBA);
+ int size = height * rowLength;
+ byte[] byteArray = new byte[size];
+ ByteBuffer buf = ByteBuffer.wrap(byteArray);
+ mBitmap.copyPixelsToBuffer(buf);
+
+ // Write array in chunks
+ int chunkSize = rowLength / 3;
+ int written = 0;
+ while (written < size) {
+ if (written + chunkSize > size) {
+ chunkSize = size - written;
+ }
+ mStream.write(byteArray, written, chunkSize);
+ written += chunkSize;
+ }
+ mStream.close();
+
+ // Get compressed jpeg output
+ byte[] compressed = mWrappedStream.toByteArray();
+
+ // Check jpeg
+ ByteArrayInputStream inStream = new ByteArrayInputStream(compressed);
+ Bitmap test = BitmapFactory.decodeStream(inStream);
+ assertTrue(test != null);
+ assertTrue(test.sameAs(mControl));
+ }
+
+ // TODO : more tests
+}