diff --git a/core/jni/android_hardware_photography_CameraMetadata.cpp b/core/jni/android_hardware_photography_CameraMetadata.cpp
new file mode 100644
index 0000000..fa363f3
--- /dev/null
+++ b/core/jni/android_hardware_photography_CameraMetadata.cpp
@@ -0,0 +1,271 @@
+/*
+**
+** Copyright 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.
+*/
+
+// #define LOG_NDEBUG 0
+#define LOG_TAG "CameraMetadata-JNI"
+#include <utils/Log.h>
+
+#include "jni.h"
+#include "JNIHelp.h"
+#include "android_os_Parcel.h"
+#include "android_runtime/AndroidRuntime.h"
+
+#include <camera/CameraMetadata.h>
+
+// fully-qualified class name
+#define CAMERA_METADATA_CLASS_NAME "android/hardware/photography/CameraMetadata"
+
+using namespace android;
+
+struct fields_t {
+    jfieldID    metadata_ptr;
+};
+
+static fields_t fields;
+
+extern "C" {
+
+static void CameraMetadata_classInit(JNIEnv *env, jobject thiz);
+
+// Less safe access to native pointer. Does NOT throw any Java exceptions if NULL.
+static CameraMetadata* CameraMetadata_getPointerNoThrow(JNIEnv *env, jobject thiz) {
+
+    if (thiz == NULL) {
+        return NULL;
+    }
+
+    return reinterpret_cast<CameraMetadata*>(env->GetLongField(thiz, fields.metadata_ptr));
+}
+
+// Safe access to native pointer from object. Throws if not possible to access.
+static CameraMetadata* CameraMetadata_getPointerThrow(JNIEnv *env, jobject thiz,
+                                                 const char* argName = "this") {
+
+    if (thiz == NULL) {
+        ALOGV("%s: Throwing java.lang.NullPointerException for null reference",
+              __FUNCTION__);
+        jniThrowNullPointerException(env, argName);
+        return NULL;
+    }
+
+    CameraMetadata* metadata = CameraMetadata_getPointerNoThrow(env, thiz);
+    if (metadata == NULL) {
+        ALOGV("%s: Throwing java.lang.IllegalStateException for closed object",
+              __FUNCTION__);
+        jniThrowException(env, "java/lang/IllegalStateException",
+                            "Metadata object was already closed");
+        return NULL;
+    }
+
+    return metadata;
+}
+
+static jlong CameraMetadata_allocate(JNIEnv *env, jobject thiz) {
+    ALOGV("%s", __FUNCTION__);
+
+    return reinterpret_cast<jlong>(new CameraMetadata());
+}
+
+static jboolean CameraMetadata_isEmpty(JNIEnv *env, jobject thiz) {
+    ALOGV("%s", __FUNCTION__);
+
+    CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
+
+    if (metadata == NULL) {
+        ALOGW("%s: Returning early due to exception being thrown",
+               __FUNCTION__);
+        return JNI_TRUE; // actually throws java exc.
+    }
+
+    jboolean empty = metadata->isEmpty();
+
+    ALOGV("%s: Empty returned %d, entry count was %d",
+          __FUNCTION__, empty, metadata->entryCount());
+
+    return empty;
+}
+
+static jint CameraMetadata_getEntryCount(JNIEnv *env, jobject thiz) {
+    ALOGV("%s", __FUNCTION__);
+
+    CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
+
+    if (metadata == NULL) return 0; // actually throws java exc.
+
+    return metadata->entryCount();
+}
+
+// idempotent. calling more than once has no effect.
+static void CameraMetadata_close(JNIEnv *env, jobject thiz) {
+    ALOGV("%s", __FUNCTION__);
+
+    CameraMetadata* metadata = CameraMetadata_getPointerNoThrow(env, thiz);
+
+    if (metadata != NULL) {
+        delete metadata;
+        env->SetLongField(thiz, fields.metadata_ptr, 0);
+    }
+
+    LOG_ALWAYS_FATAL_IF(CameraMetadata_getPointerNoThrow(env, thiz) != NULL,
+                        "Expected the native ptr to be 0 after #close");
+}
+
+static void CameraMetadata_swap(JNIEnv *env, jobject thiz, jobject other) {
+    ALOGV("%s", __FUNCTION__);
+
+    CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
+
+    // order is important: we can't call another JNI method
+    // if there is an exception pending
+    if (metadata == NULL) return;
+
+    CameraMetadata* otherMetadata = CameraMetadata_getPointerThrow(env, other, "other");
+
+    if (otherMetadata == NULL) return;
+
+    metadata->swap(*otherMetadata);
+}
+
+static void CameraMetadata_readFromParcel(JNIEnv *env, jobject thiz, jobject parcel) {
+    ALOGV("%s", __FUNCTION__);
+    CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
+    if (metadata == NULL) {
+        return;
+    }
+
+    Parcel* parcelNative = parcelForJavaObject(env, parcel);
+    if (parcelNative == NULL) {
+        jniThrowNullPointerException(env, "parcel");
+        return;
+    }
+
+    status_t err;
+    if ((err = metadata->readFromParcel(parcelNative)) != OK) {
+        jniThrowExceptionFmt(env, "java/lang/IllegalStateException",
+                             "Failed to read from parcel (error code %d)", err);
+        return;
+    }
+}
+
+static void CameraMetadata_writeToParcel(JNIEnv *env, jobject thiz, jobject parcel) {
+    ALOGV("%s", __FUNCTION__);
+    CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
+    if (metadata == NULL) {
+        return;
+    }
+
+    Parcel* parcelNative = parcelForJavaObject(env, parcel);
+    if (parcelNative == NULL) {
+        jniThrowNullPointerException(env, "parcel");
+        return;
+    }
+
+    status_t err;
+    if ((err = metadata->writeToParcel(parcelNative)) != OK) {
+        jniThrowExceptionFmt(env, "java/lang/IllegalStateException",
+                                  "Failed to write to parcel (error code %d)", err);
+        return;
+    }
+}
+
+} // extern "C"
+
+//-------------------------------------------------
+
+static JNINativeMethod gCameraMetadataMethods[] = {
+  { "nativeClassInit",
+    "()V",
+    (void *)CameraMetadata_classInit },
+  { "nativeAllocate",
+    "()J",
+    (void*)CameraMetadata_allocate },
+  { "nativeIsEmpty",
+    "()Z",
+    (void*)CameraMetadata_isEmpty },
+  { "nativeGetEntryCount",
+    "()I",
+    (void*)CameraMetadata_getEntryCount },
+  { "nativeClose",
+    "()V",
+    (void*)CameraMetadata_close },
+  { "nativeSwap",
+    "(L" CAMERA_METADATA_CLASS_NAME ";)V",
+    (void *)CameraMetadata_swap },
+  { "nativeReadFromParcel",
+    "(Landroid/os/Parcel;)V",
+    (void *)CameraMetadata_readFromParcel },
+  { "nativeWriteToParcel",
+    "(Landroid/os/Parcel;)V",
+    (void *)CameraMetadata_writeToParcel },
+};
+
+struct field {
+    const char *class_name;
+    const char *field_name;
+    const char *field_type;
+    jfieldID   *jfield;
+};
+
+static int find_fields(JNIEnv *env, field *fields, int count)
+{
+    for (int i = 0; i < count; i++) {
+        field *f = &fields[i];
+        jclass clazz = env->FindClass(f->class_name);
+        if (clazz == NULL) {
+            ALOGE("Can't find %s", f->class_name);
+            return -1;
+        }
+
+        jfieldID field = env->GetFieldID(clazz, f->field_name, f->field_type);
+        if (field == NULL) {
+            ALOGE("Can't find %s.%s", f->class_name, f->field_name);
+            return -1;
+        }
+
+        *(f->jfield) = field;
+    }
+
+    return 0;
+}
+
+// Get all the required offsets in java class and register native functions
+int register_android_hardware_photography_CameraMetadata(JNIEnv *env)
+{
+    // Register native functions
+    return AndroidRuntime::registerNativeMethods(env,
+            CAMERA_METADATA_CLASS_NAME,
+            gCameraMetadataMethods,
+            NELEM(gCameraMetadataMethods));
+}
+
+extern "C" {
+static void CameraMetadata_classInit(JNIEnv *env, jobject thiz) {
+    // XX: Why do this separately instead of doing it in the register function?
+    ALOGV("%s", __FUNCTION__);
+
+    field fields_to_find[] = {
+        { CAMERA_METADATA_CLASS_NAME, "mMetadataPtr", "J", &fields.metadata_ptr },
+    };
+
+    // Do this here instead of in register_native_methods,
+    // since otherwise it will fail to find the fields.
+    if (find_fields(env, fields_to_find, NELEM(fields_to_find)) < 0)
+        return;
+
+    jclass clazz = env->FindClass(CAMERA_METADATA_CLASS_NAME);
+}
+} // extern "C"