diff --git a/camera/IProCameraCallbacks.cpp b/camera/IProCameraCallbacks.cpp
new file mode 100644
index 0000000..c2ad74f
--- /dev/null
+++ b/camera/IProCameraCallbacks.cpp
@@ -0,0 +1,144 @@
+/*
+**
+** 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 "IProCameraCallbacks"
+#include <utils/Log.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <binder/Parcel.h>
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/Surface.h>
+#include <utils/Mutex.h>
+
+#include <camera/IProCameraCallbacks.h>
+
+namespace android {
+
+enum {
+    NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
+    DATA_CALLBACK,
+    DATA_CALLBACK_TIMESTAMP,
+};
+
+class BpProCameraCallbacks: public BpInterface<IProCameraCallbacks>
+{
+public:
+    BpProCameraCallbacks(const sp<IBinder>& impl)
+        : BpInterface<IProCameraCallbacks>(impl)
+    {
+    }
+
+    // generic callback from camera service to app
+    void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
+    {
+        ALOGV("notifyCallback");
+        Parcel data, reply;
+        data.writeInterfaceToken(IProCameraCallbacks::getInterfaceDescriptor());
+        data.writeInt32(msgType);
+        data.writeInt32(ext1);
+        data.writeInt32(ext2);
+        remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
+    }
+
+    // generic data callback from camera service to app with image data
+    void dataCallback(int32_t msgType, const sp<IMemory>& imageData,
+                      camera_frame_metadata_t *metadata)
+    {
+        ALOGV("dataCallback");
+        Parcel data, reply;
+        data.writeInterfaceToken(IProCameraCallbacks::getInterfaceDescriptor());
+        data.writeInt32(msgType);
+        data.writeStrongBinder(imageData->asBinder());
+        if (metadata) {
+            data.writeInt32(metadata->number_of_faces);
+            data.write(metadata->faces,
+                            sizeof(camera_face_t) * metadata->number_of_faces);
+        }
+        remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
+    }
+
+    // generic data callback from camera service to app with image data
+    void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
+                                                  const sp<IMemory>& imageData)
+    {
+        ALOGV("dataCallback");
+        Parcel data, reply;
+        data.writeInterfaceToken(IProCameraCallbacks::getInterfaceDescriptor());
+        data.writeInt64(timestamp);
+        data.writeInt32(msgType);
+        data.writeStrongBinder(imageData->asBinder());
+        remote()->transact(DATA_CALLBACK_TIMESTAMP, data, &reply,
+                                                          IBinder::FLAG_ONEWAY);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(ProCameraCallbacks,
+                                        "android.hardware.IProCameraCallbacks");
+
+// ----------------------------------------------------------------------
+
+status_t BnProCameraCallbacks::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch(code) {
+        case NOTIFY_CALLBACK: {
+            ALOGV("NOTIFY_CALLBACK");
+            CHECK_INTERFACE(IProCameraCallbacks, data, reply);
+            int32_t msgType = data.readInt32();
+            int32_t ext1 = data.readInt32();
+            int32_t ext2 = data.readInt32();
+            notifyCallback(msgType, ext1, ext2);
+            return NO_ERROR;
+        } break;
+        case DATA_CALLBACK: {
+            ALOGV("DATA_CALLBACK");
+            CHECK_INTERFACE(IProCameraCallbacks, data, reply);
+            int32_t msgType = data.readInt32();
+            sp<IMemory> imageData = interface_cast<IMemory>(
+                                                       data.readStrongBinder());
+            camera_frame_metadata_t *metadata = NULL;
+            if (data.dataAvail() > 0) {
+                metadata = new camera_frame_metadata_t;
+                metadata->number_of_faces = data.readInt32();
+                metadata->faces = (camera_face_t *) data.readInplace(
+                        sizeof(camera_face_t) * metadata->number_of_faces);
+            }
+            dataCallback(msgType, imageData, metadata);
+            if (metadata) delete metadata;
+            return NO_ERROR;
+        } break;
+        case DATA_CALLBACK_TIMESTAMP: {
+            ALOGV("DATA_CALLBACK_TIMESTAMP");
+            CHECK_INTERFACE(IProCameraCallbacks, data, reply);
+            nsecs_t timestamp = data.readInt64();
+            int32_t msgType = data.readInt32();
+            sp<IMemory> imageData = interface_cast<IMemory>(
+                                                       data.readStrongBinder());
+            dataCallbackTimestamp(timestamp, msgType, imageData);
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+