diff --git a/camera/CameraWrapper.cpp b/camera/CameraWrapper.cpp
index b860a46..59cd665 100644
--- a/camera/CameraWrapper.cpp
+++ b/camera/CameraWrapper.cpp
@@ -41,6 +41,12 @@ using namespace android;
 static Mutex gCameraWrapperLock;
 static camera_module_t *gVendorModule = 0;
 
+static camera_notify_callback gUserNotifyCb = NULL;
+static camera_data_callback gUserDataCb = NULL;
+static camera_data_timestamp_callback gUserDataCbTimestamp = NULL;
+static camera_request_memory gUserGetMemory = NULL;
+static void *gUserCameraDevice = NULL;
+
 static char **fixed_set_params = NULL;
 
 static int camera_device_open(const hw_module_t *module, const char *name,
@@ -167,6 +173,25 @@ static int camera_set_preview_window(struct camera_device *device,
     return VENDOR_CALL(device, set_preview_window, window);
 }
 
+void camera_notify_cb(int32_t msg_type, int32_t ext1, int32_t ext2, void *user) {
+    gUserNotifyCb(msg_type, ext1, ext2, gUserCameraDevice);
+}
+
+void camera_data_cb(int32_t msg_type, const camera_memory_t *data, unsigned int index,
+        camera_frame_metadata_t *metadata, void *user) {
+    gUserDataCb(msg_type, data, index, metadata, gUserCameraDevice);
+}
+
+void camera_data_cb_timestamp(nsecs_t timestamp, int32_t msg_type,
+        const camera_memory_t *data, unsigned index, void *user) {
+    gUserDataCbTimestamp(timestamp, msg_type, data, index, gUserCameraDevice);
+}
+
+camera_memory_t* camera_get_memory(int fd, size_t buf_size,
+        uint_t num_bufs, void *user) {
+    return gUserGetMemory(fd, buf_size, num_bufs, gUserCameraDevice);
+}
+
 static void camera_set_callbacks(struct camera_device *device,
         camera_notify_callback notify_cb,
         camera_data_callback data_cb,
@@ -180,8 +205,14 @@ static void camera_set_callbacks(struct camera_device *device,
     ALOGV("%s->%08X->%08X", __FUNCTION__, (uintptr_t)device,
             (uintptr_t)(((wrapper_camera_device_t*)device)->vendor));
 
-    VENDOR_CALL(device, set_callbacks, notify_cb, data_cb, data_cb_timestamp,
-            get_memory, user);
+    gUserNotifyCb = notify_cb;
+    gUserDataCb = data_cb;
+    gUserDataCbTimestamp = data_cb_timestamp;
+    gUserGetMemory = get_memory;
+    gUserCameraDevice = user;
+
+    VENDOR_CALL(device, set_callbacks, camera_notify_cb, camera_data_cb,
+            camera_data_cb_timestamp, camera_get_memory, user);
 }
 
 static void camera_enable_msg_type(struct camera_device *device,