From 0cea1fca1ac717b0bf6f4f75c2e41e8549bc97e2 Mon Sep 17 00:00:00 2001
From: Ruben Brunk <rubenbrunk@google.com>
Date: Tue, 2 Apr 2013 13:15:57 -0700
Subject: Speed improvements for ExifOutputStream.

Change-Id: I7d3ee9c157aefe67734e7b49cfa7868254c134ef
---
 .../gallery3d/exif/ExifOutputStreamTest.java       | 55 ++++++++++++++++++++++
 .../gallery3d/exif/ExifXmlDataTestCase.java        | 13 +++++
 2 files changed, 68 insertions(+)

(limited to 'tests/src/com')

diff --git a/tests/src/com/android/gallery3d/exif/ExifOutputStreamTest.java b/tests/src/com/android/gallery3d/exif/ExifOutputStreamTest.java
index 8c4fc3dea..1286c5801 100644
--- a/tests/src/com/android/gallery3d/exif/ExifOutputStreamTest.java
+++ b/tests/src/com/android/gallery3d/exif/ExifOutputStreamTest.java
@@ -18,6 +18,7 @@ package com.android.gallery3d.exif;
 
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.util.Log;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
@@ -131,6 +132,60 @@ public class ExifOutputStreamTest extends ExifXmlDataTestCase {
         }
     }
 
+    public void testOutputSpeed() throws Exception {
+        final String LOGTAG = "testOutputSpeed";
+        InputStream imageInputStream = null;
+        OutputStream imageOutputStream = null;
+        try {
+            try {
+                imageInputStream = getImageInputStream();
+                // Read the image data
+                Bitmap bmp = BitmapFactory.decodeStream(imageInputStream);
+                // The image is invalid
+                if (bmp == null) {
+                    return;
+                }
+                imageInputStream.close();
+                int nLoops = 20;
+                long totalReadDuration = 0;
+                long totalWriteDuration = 0;
+                for (int i = 0; i < nLoops; i++) {
+                    imageInputStream = reopenFileStream();
+                    // Read exif data
+                    long startTime = System.nanoTime();
+                    ExifData exifData = new ExifReader(mInterface).read(imageInputStream);
+                    long endTime = System.nanoTime();
+                    long duration = endTime - startTime;
+                    totalReadDuration += duration;
+                    Log.v(LOGTAG, " read time: " + duration);
+                    imageInputStream.close();
+
+                    // Encode the image with the exif data
+                    imageOutputStream = (OutputStream) new FileOutputStream(mTmpFile);
+                    ExifOutputStream exifOutputStream = new ExifOutputStream(imageOutputStream,
+                            mInterface);
+                    exifOutputStream.setExifData(exifData);
+                    startTime = System.nanoTime();
+                    bmp.compress(Bitmap.CompressFormat.JPEG, 90, exifOutputStream);
+                    endTime = System.nanoTime();
+                    duration = endTime - startTime;
+                    totalWriteDuration += duration;
+                    Log.v(LOGTAG, " write time: " + duration);
+                    exifOutputStream.close();
+                }
+                Log.v(LOGTAG, "======================= normal");
+                Log.v(LOGTAG, "avg read time: " + totalReadDuration / nLoops);
+                Log.v(LOGTAG, "avg write time: " + totalWriteDuration / nLoops);
+                Log.v(LOGTAG, "=======================");
+            } finally {
+                Util.closeSilently(imageInputStream);
+                Util.closeSilently(imageOutputStream);
+            }
+        } catch (Exception e) {
+            throw new Exception(getImageTitle(), e);
+        }
+    }
+
     @Override
     public void tearDown() throws Exception {
         super.tearDown();
diff --git a/tests/src/com/android/gallery3d/exif/ExifXmlDataTestCase.java b/tests/src/com/android/gallery3d/exif/ExifXmlDataTestCase.java
index 5f200ea92..da860208b 100644
--- a/tests/src/com/android/gallery3d/exif/ExifXmlDataTestCase.java
+++ b/tests/src/com/android/gallery3d/exif/ExifXmlDataTestCase.java
@@ -92,4 +92,17 @@ public class ExifXmlDataTestCase extends InstrumentationTestCase {
             return String.format(RES_ID_TITLE, mImageResourceId);
         }
     }
+
+    protected InputStream reopenFileStream() throws Exception {
+        try {
+            if (mImagePath != null) {
+                return new FileInputStream(mImagePath);
+            } else {
+                Resources res = getInstrumentation().getContext().getResources();
+                return res.openRawResource(mImageResourceId);
+            }
+        } catch (Exception e) {
+            throw new Exception(getImageTitle(), e);
+        }
+    }
 }
-- 
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