1 files changed, 143 insertions, 0 deletions
diff --git a/src/com/android/camera/mpo/MpoInterface.java b/src/com/android/camera/mpo/MpoInterface.java
new file mode 100644
index 000000000..3e2d9a4e2
--- /dev/null
+++ b/src/com/android/camera/mpo/MpoInterface.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Not a contribution.
+ *
+ * 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.camera.mpo;
+
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import android.util.Log;
+
+import com.android.camera.exif.ExifInterface;
+import com.android.camera.util.CameraUtil;
+
+public class MpoInterface {
+    private static final String TAG = "MpoInterface";
+    private static final String NULL_ARGUMENT_STRING = "Argument is null";
+
+    // Index IFD
+    public static final int TAG_MP_FORMAT_VERSION = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_INDEX_IFD + MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB000);
+    public static final int TAG_NUM_IMAGES = ExifInterface.defineTag(MpoIfdData.TYPE_MP_INDEX_IFD,
+            (short) 0xB001);
+    public static final int TAG_MP_ENTRY = ExifInterface.defineTag(MpoIfdData.TYPE_MP_INDEX_IFD,
+            (short) 0xB002);
+    public static final int TAG_IMAGE_UNIQUE_ID_LIST = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_INDEX_IFD, (short) 0xB003);
+    public static final int TAG_NUM_CAPTURED_FRAMES = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_INDEX_IFD, (short) 0xB004);
+
+    // Attrib IFD
+    public static final int TAG_IMAGE_NUMBER = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB101);
+    public static final int TAG_PAN_ORIENTATION = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB201);
+    public static final int TAG_PAN_OVERLAP_H = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB202);
+    public static final int TAG_PAN_OVERLAP_V = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB203);
+    public static final int TAG_BASE_VIEWPOINT_NUM = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB204);
+    public static final int TAG_CONVERGE_ANGLE = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB205);
+    public static final int TAG_BASELINE_LEN = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB206);
+    public static final int TAG_DIVERGE_ANGLE = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB207);
+    public static final int TAG_AXIS_DISTANCE_X = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB208);
+    public static final int TAG_AXIS_DISTANCE_Y = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB209);
+    public static final int TAG_AXIS_DISTANCE_Z = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB20A);
+    public static final int TAG_YAW_ANGLE = ExifInterface.defineTag(MpoIfdData.TYPE_MP_ATTRIB_IFD,
+            (short) 0xB20B);
+    public static final int TAG_PITCH_ANGLE = ExifInterface.defineTag(
+            MpoIfdData.TYPE_MP_ATTRIB_IFD, (short) 0xB20C);
+    public static final int TAG_ROLL_ANGLE = ExifInterface.defineTag(MpoIfdData.TYPE_MP_ATTRIB_IFD,
+            (short) 0xB20D);
+
+    public static int writeMpo(MpoData mpo, OutputStream out) {
+        if (mpo == null || out == null)
+            throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+
+        MpoOutputStream s = getMpoWriterStream(out);
+        s.setMpoData(mpo);
+
+        // check and write mpo file
+        try {
+            s.writeMpoFile();
+        } catch (IOException e) {
+            CameraUtil.closeSilently(s);
+            Log.w(TAG, "IO Exception when writing mpo image");
+            return -1;
+        }
+
+        // close stream
+        CameraUtil.closeSilently(s);
+        return s.size();
+    }
+
+    public static int writeMpo(MpoData mpo, String outFilename) {
+        if (mpo == null || outFilename == null)
+            throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+
+        return writeMpo(mpo, getFileWriterStream(outFilename));
+    }
+
+    /**
+     * Wraps an OutputStream object with an MpoOutputStream.
+     *
+     * @param outStream
+     *            an OutputStream to wrap.
+     * @return an MpoOutputStream that wraps the outStream parameter, and adds
+     *         mpo metadata. A jpeg image should be written to this stream.
+     */
+    private static MpoOutputStream getMpoWriterStream(OutputStream outStream) {
+        if (outStream == null) {
+            throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+        }
+        MpoOutputStream mos = new MpoOutputStream(outStream);
+        return mos;
+    }
+
+    /**
+     * Returns an FileOutputStream object that writes to a file.
+     *
+     * @param outFileName
+     *            an String containing a filepath for a file.
+     * @return an FileOutputStream that writes to the outFileName file.
+     * @throws FileNotFoundException
+     */
+    private static OutputStream getFileWriterStream(String outFileName) {
+        if (outFileName == null) {
+            throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+        }
+        OutputStream out = null;
+        try {
+            out = new FileOutputStream(outFileName);
+        } catch (FileNotFoundException e) {
+            CameraUtil.closeSilently(out);
+            Log.w(TAG, "File not found");
+        }
+        return out;
+    }
+}