diff --git a/media/mtp/IMtpDatabase.h b/media/mtp/IMtpDatabase.h
new file mode 100644
index 0000000..d09a984
--- /dev/null
+++ b/media/mtp/IMtpDatabase.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#ifndef _I_MTP_DATABASE_H
+#define _I_MTP_DATABASE_H
+
+#include "MtpTypes.h"
+
+namespace android {
+
+class MtpDataPacket;
+class MtpProperty;
+class MtpObjectInfo;
+
+class IMtpDatabase {
+public:
+    virtual ~IMtpDatabase() {}
+
+    // Called from SendObjectInfo to reserve a database entry for the incoming file.
+    virtual MtpObjectHandle         beginSendObject(const char* path,
+                                            MtpObjectFormat format,
+                                            MtpObjectHandle parent,
+                                            MtpStorageID storage) = 0;
+
+    // Called to report success or failure of the SendObject file transfer.
+    virtual void                    endSendObject(MtpObjectHandle handle,
+                                            bool succeeded) = 0;
+    
+    // Called to rescan a file, such as after an edit.
+    virtual void                    rescanFile(const char* path,
+                                            MtpObjectHandle handle,
+                                            MtpObjectFormat format) = 0;
+
+    virtual MtpObjectHandleList*    getObjectList(MtpStorageID storageID,
+                                            MtpObjectFormat format,
+                                            MtpObjectHandle parent) = 0;
+
+    virtual int                     getNumObjects(MtpStorageID storageID,
+                                            MtpObjectFormat format,
+                                            MtpObjectHandle parent) = 0;
+
+    // callee should delete[] the results from these
+    // results can be NULL
+    virtual MtpObjectFormatList*    getSupportedPlaybackFormats() = 0;
+    virtual MtpObjectFormatList*    getSupportedCaptureFormats() = 0;
+    virtual MtpObjectPropertyList*  getSupportedObjectProperties(MtpObjectFormat format) = 0;
+    virtual MtpDevicePropertyList*  getSupportedDeviceProperties() = 0;
+
+    virtual MtpResponseCode         getObjectPropertyValue(MtpObjectHandle handle,
+                                            MtpObjectProperty property,
+                                            MtpDataPacket& packet) = 0;
+
+    virtual MtpResponseCode         setObjectPropertyValue(MtpObjectHandle handle,
+                                            MtpObjectProperty property,
+                                            MtpDataPacket& packet) = 0;
+
+    virtual MtpResponseCode         getDevicePropertyValue(MtpDeviceProperty property,
+                                            MtpDataPacket& packet) = 0;
+
+    virtual MtpResponseCode         setDevicePropertyValue(MtpDeviceProperty property,
+                                            MtpDataPacket& packet) = 0;
+
+    virtual MtpResponseCode         resetDeviceProperty(MtpDeviceProperty property) = 0;
+
+    virtual MtpResponseCode         getObjectPropertyList(MtpObjectHandle handle,
+                                            uint32_t format, uint32_t property,
+                                            int groupCode, int depth,
+                                            MtpDataPacket& packet) = 0;
+
+    virtual MtpResponseCode         getObjectInfo(MtpObjectHandle handle,
+                                            MtpObjectInfo& info) = 0;
+
+    virtual void*                   getThumbnail(MtpObjectHandle handle, size_t& outThumbSize) = 0;
+
+    virtual MtpResponseCode         getObjectFilePath(MtpObjectHandle handle,
+                                            MtpString& outFilePath,
+                                            int64_t& outFileLength,
+                                            MtpObjectFormat& outFormat) = 0;
+
+    virtual MtpResponseCode         beginDeleteObject(MtpObjectHandle handle) = 0;
+    virtual void                    endDeleteObject(MtpObjectHandle handle, bool succeeded) = 0;
+
+    virtual MtpObjectHandleList*    getObjectReferences(MtpObjectHandle handle) = 0;
+
+    virtual MtpResponseCode         setObjectReferences(MtpObjectHandle handle,
+                                            MtpObjectHandleList* references) = 0;
+
+    virtual MtpProperty*            getObjectPropertyDesc(MtpObjectProperty property,
+                                            MtpObjectFormat format) = 0;
+
+    virtual MtpProperty*            getDevicePropertyDesc(MtpDeviceProperty property) = 0;
+
+    virtual MtpResponseCode         beginMoveObject(MtpObjectHandle handle, MtpObjectHandle newParent,
+                                            MtpStorageID newStorage) = 0;
+
+    virtual void                    endMoveObject(MtpObjectHandle oldParent, MtpObjectHandle newParent,
+                                            MtpStorageID oldStorage, MtpStorageID newStorage,
+                                            MtpObjectHandle handle, bool succeeded) = 0;
+
+    virtual MtpResponseCode         beginCopyObject(MtpObjectHandle handle, MtpObjectHandle newParent,
+                                            MtpStorageID newStorage);
+    virtual void                    endCopyObject(MtpObjectHandle handle, bool succeeded);
+};
+
+}; // namespace android
+
+#endif // _I_MTP_DATABASE_H