Initial checkin of AOSP Messaging app.

b/23110861 Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1
2015-08-12 12:47:26 -07:00
parent ef8c7abbcf
commit d3b009ae55
1645 changed files with 186271 additions and 0 deletions
@@ -0,0 +1,93 @@
+/*
+ * 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.messaging.util.exif;
+
+import android.util.Log;
+import com.android.messaging.util.LogUtil;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * This class reads the EXIF header of a JPEG file and stores it in
+ * {@link ExifData}.
+ */
+class ExifReader {
+    private static final String TAG = LogUtil.BUGLE_TAG;
+
+    private final ExifInterface mInterface;
+
+    ExifReader(ExifInterface iRef) {
+        mInterface = iRef;
+    }
+
+    /**
+     * Parses the inputStream and and returns the EXIF data in an
+     * {@link ExifData}.
+     *
+     * @throws ExifInvalidFormatException
+     * @throws java.io.IOException
+     */
+    protected ExifData read(InputStream inputStream) throws ExifInvalidFormatException,
+            IOException {
+        ExifParser parser = ExifParser.parse(inputStream, mInterface);
+        ExifData exifData = new ExifData(parser.getByteOrder());
+        ExifTag tag = null;
+
+        int event = parser.next();
+        while (event != ExifParser.EVENT_END) {
+            switch (event) {
+                case ExifParser.EVENT_START_OF_IFD:
+                    exifData.addIfdData(new IfdData(parser.getCurrentIfd()));
+                    break;
+                case ExifParser.EVENT_NEW_TAG:
+                    tag = parser.getTag();
+                    if (!tag.hasValue()) {
+                        parser.registerForTagValue(tag);
+                    } else {
+                        exifData.getIfdData(tag.getIfd()).setTag(tag);
+                    }
+                    break;
+                case ExifParser.EVENT_VALUE_OF_REGISTERED_TAG:
+                    tag = parser.getTag();
+                    if (tag.getDataType() == ExifTag.TYPE_UNDEFINED) {
+                        parser.readFullTagValue(tag);
+                    }
+                    exifData.getIfdData(tag.getIfd()).setTag(tag);
+                    break;
+                case ExifParser.EVENT_COMPRESSED_IMAGE:
+                    byte buf[] = new byte[parser.getCompressedImageSize()];
+                    if (buf.length == parser.read(buf)) {
+                        exifData.setCompressedThumbnail(buf);
+                    } else {
+                        Log.w(TAG, "Failed to read the compressed thumbnail");
+                    }
+                    break;
+                case ExifParser.EVENT_UNCOMPRESSED_STRIP:
+                    buf = new byte[parser.getStripSize()];
+                    if (buf.length == parser.read(buf)) {
+                        exifData.setStripBytes(parser.getStripIndex(), buf);
+                    } else {
+                        Log.w(TAG, "Failed to read the strip bytes");
+                    }
+                    break;
+            }
+            event = parser.next();
+        }
+        return exifData;
+    }
+}