1 files changed, 125 insertions, 0 deletions
diff --git a/tests/src/com/android/gallery3d/exif/ExifXmlReader.java b/tests/src/com/android/gallery3d/exif/ExifXmlReader.java
new file mode 100644
index 000000000..12e9cf77e
--- /dev/null
+++ b/tests/src/com/android/gallery3d/exif/ExifXmlReader.java
@@ -0,0 +1,125 @@
+/*
+ * 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 org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class ExifXmlReader {
+    private static final String TAG_EXIF = "exif";
+    private static final String TAG_TAG = "tag";
+
+    private static final String IFD0 = "IFD0";
+    private static final String EXIF_IFD = "ExifIFD";
+    private static final String GPS_IFD = "GPS";
+    private static final String IFD1 = "IFD1";
+    private static final String INTEROP_IFD = "InteropIFD";
+
+    private static final String ATTR_ID = "id";
+    private static final String ATTR_IFD = "ifd";
+
+    private static final String NO_VALUE = "NO_VALUE";
+
+    /**
+     * This function read the ground truth XML.
+     *
+     * @throws XmlPullParserException
+     * @throws IOException
+     */
+    static public List<Map<Short, List<String>>> readXml(XmlPullParser parser)
+            throws XmlPullParserException, IOException {
+
+        List<Map<Short, List<String>>> exifData =
+                new ArrayList<Map<Short, List<String>>>(IfdId.TYPE_IFD_COUNT);
+        for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
+            exifData.add(new HashMap<Short, List<String>>());
+        }
+
+        while (parser.next() != XmlPullParser.END_DOCUMENT) {
+            if (parser.getEventType() == XmlPullParser.START_TAG) {
+                break;
+            }
+        }
+        parser.require(XmlPullParser.START_TAG, null, TAG_EXIF);
+
+        while (parser.next() != XmlPullParser.END_TAG) {
+            if (parser.getEventType() != XmlPullParser.START_TAG) {
+                continue;
+            }
+
+            parser.require(XmlPullParser.START_TAG, null, TAG_TAG);
+
+            int ifdId = getIfdIdFromString(parser.getAttributeValue(null, ATTR_IFD));
+            short id = Integer.decode(parser.getAttributeValue(null, ATTR_ID)).shortValue();
+
+            String value = "";
+            if (parser.next() == XmlPullParser.TEXT) {
+                value = parser.getText();
+                parser.next();
+            }
+
+            if (ifdId < 0) {
+                // TODO: the MarkerNote segment.
+            } else {
+                List<String> tagData = exifData.get(ifdId).get(id);
+                if (tagData == null) {
+                    tagData = new ArrayList<String>();
+                    exifData.get(ifdId).put(id, tagData);
+                }
+                if (NO_VALUE.equals(value)) {
+                    tagData.add(null);
+                } else {
+                    tagData.add(value.trim());
+                }
+            }
+
+            parser.require(XmlPullParser.END_TAG, null, null);
+        }
+        return exifData;
+    }
+
+    static private int getIfdIdFromString(String prefix) {
+        if (IFD0.equals(prefix)) {
+            return IfdId.TYPE_IFD_0;
+        } else if (EXIF_IFD.equals(prefix)) {
+            return IfdId.TYPE_IFD_EXIF;
+        } else if (GPS_IFD.equals(prefix)) {
+            return IfdId.TYPE_IFD_GPS;
+        } else if (IFD1.equals(prefix)) {
+            return IfdId.TYPE_IFD_1;
+        } else if (INTEROP_IFD.equals(prefix)) {
+            return IfdId.TYPE_IFD_INTEROPERABILITY;
+        } else {
+            assert (false);
+            return -1;
+        }
+    }
+
+    static public int getTrueTagNumber(Map<Short, List<String>> ifdData) {
+        int size = 0;
+        for (List<String> tag : ifdData.values()) {
+            size += tag.size();
+        }
+        return size;
+    }
+}