Add ExifTags to hold tag names that are not available in ExifInterface

prior to API level 11.
Bug: 6775786

Change-Id: Iab564f577d9a0b87c8fb7b91eda6cabc12b5a11a

3 files changed, 38 insertions, 9 deletions

diff --git a/gallerycommon/src/com/android/gallery3d/common/ExifTags.java b/gallerycommon/src/com/android/gallery3d/common/ExifTags.java
new file mode 100644
index 000000000..9b11fe416
--- /dev/null
+++ b/gallerycommon/src/com/android/gallery3d/common/ExifTags.java
@@ -0,0 +1,27 @@
+/*
+ * 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.common;
+
+/**
+ * The class holds the EXIF tag names that are not available in
+ * {@link android.media.ExifInterface} prior to API level 11.
+ */
+public interface ExifTags {
+    static final String TAG_ISO = "ISOSpeedRatings";
+    static final String TAG_EXPOSURE_TIME = "ExposureTime";
+    static final String TAG_APERTURE = "FNumber";
+}
diff --git a/src/com/android/gallery3d/app/CropImage.java b/src/com/android/gallery3d/app/CropImage.java
index 294e285ea..a587624ed 100644
--- a/src/com/android/gallery3d/app/CropImage.java
+++ b/src/com/android/gallery3d/app/CropImage.java
@@ -49,6 +49,7 @@ import android.widget.Toast;
 import com.android.gallery3d.R;
 import com.android.gallery3d.common.ApiHelper;
 import com.android.gallery3d.common.BitmapUtils;
+import com.android.gallery3d.common.ExifTags;
 import com.android.gallery3d.common.Utils;
 import com.android.gallery3d.data.DataManager;
 import com.android.gallery3d.data.LocalImage;
@@ -989,11 +990,11 @@ public class CropImage extends AbstractGalleryActivity {
             }
 
             // Handle some special values here
-            String value = oldExif.getAttribute(ExifInterface.TAG_APERTURE);
+            String value = oldExif.getAttribute(ExifTags.TAG_APERTURE);
             if (value != null) {
                 try {
                     float aperture = Float.parseFloat(value);
-                    newExif.setAttribute(ExifInterface.TAG_APERTURE,
+                    newExif.setAttribute(ExifTags.TAG_APERTURE,
                             String.valueOf((int) (aperture * 10 + 0.5f)) + "/10");
                 } catch (NumberFormatException e) {
                     Log.w(TAG, "cannot parse aperture: " + value);
@@ -1002,22 +1003,22 @@ public class CropImage extends AbstractGalleryActivity {
 
             // TODO: The code is broken, need to fix the JHEAD lib
             /*
-            value = oldExif.getAttribute(ExifInterface.TAG_EXPOSURE_TIME);
+            value = oldExif.getAttribute(ExifTags.TAG_EXPOSURE_TIME);
             if (value != null) {
                 try {
                     double exposure = Double.parseDouble(value);
                     testToRational("test exposure", exposure);
-                    newExif.setAttribute(ExifInterface.TAG_EXPOSURE_TIME, value);
+                    newExif.setAttribute(ExifTags.TAG_EXPOSURE_TIME, value);
                 } catch (NumberFormatException e) {
                     Log.w(TAG, "cannot parse exposure time: " + value);
                 }
             }
 
-            value = oldExif.getAttribute(ExifInterface.TAG_ISO);
+            value = oldExif.getAttribute(ExifTags.TAG_ISO);
             if (value != null) {
                 try {
                     int iso = Integer.parseInt(value);
-                    newExif.setAttribute(ExifInterface.TAG_ISO, String.valueOf(iso) + "/1");
+                    newExif.setAttribute(ExifTags.TAG_ISO, String.valueOf(iso) + "/1");
                 } catch (NumberFormatException e) {
                     Log.w(TAG, "cannot parse exposure time: " + value);
                 }
diff --git a/src/com/android/gallery3d/data/MediaDetails.java b/src/com/android/gallery3d/data/MediaDetails.java
index 9663dd0e6..c18365df0 100644
--- a/src/com/android/gallery3d/data/MediaDetails.java
+++ b/src/com/android/gallery3d/data/MediaDetails.java
@@ -19,6 +19,7 @@ package com.android.gallery3d.data;
 import android.media.ExifInterface;
 
 import com.android.gallery3d.R;
+import com.android.gallery3d.common.ExifTags;
 
 import java.io.IOException;
 import java.util.HashMap;
@@ -126,11 +127,11 @@ public class MediaDetails implements Iterable<Entry<Integer, Object>> {
                     MediaDetails.INDEX_HEIGHT);
             setExifData(details, exif, ExifInterface.TAG_MAKE, MediaDetails.INDEX_MAKE);
             setExifData(details, exif, ExifInterface.TAG_MODEL, MediaDetails.INDEX_MODEL);
-            setExifData(details, exif, ExifInterface.TAG_APERTURE, MediaDetails.INDEX_APERTURE);
-            setExifData(details, exif, ExifInterface.TAG_ISO, MediaDetails.INDEX_ISO);
+            setExifData(details, exif, ExifTags.TAG_APERTURE, MediaDetails.INDEX_APERTURE);
+            setExifData(details, exif, ExifTags.TAG_ISO, MediaDetails.INDEX_ISO);
             setExifData(details, exif, ExifInterface.TAG_WHITE_BALANCE,
                     MediaDetails.INDEX_WHITE_BALANCE);
-            setExifData(details, exif, ExifInterface.TAG_EXPOSURE_TIME,
+            setExifData(details, exif, ExifTags.TAG_EXPOSURE_TIME,
                     MediaDetails.INDEX_EXPOSURE_TIME);
 
             double data = exif.getAttributeDouble(ExifInterface.TAG_FOCAL_LENGTH, 0);