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      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 #ifndef PVMF_METADATAINFOMESSAGE_EXTENSION_H_INCLUDED
     19 #define PVMF_METADATAINFOMESSAGE_EXTENSION_H_INCLUDED
     20 
     21 #ifndef OSCL_BASE_H_INCLUDED
     22 #include "oscl_base.h"
     23 #endif
     24 #ifndef PV_UUID_H_INCLUDED
     25 #include "pv_uuid.h"
     26 #endif
     27 #ifndef PV_INTERFACE_H
     28 #include "pv_interface.h"
     29 #endif
     30 
     31 #include "pvmi_kvp.h"
     32 #include "oscl_vector.h"
     33 
     34 #define PVMFMetadataInfoMessageInterfaceUUID PVUuid(0x936f5d11, 0x5ff8, 0x4596, 0x8e, 0xe2, 0x55, 0x4c, 0x1c, 0xa3, 0xf9, 0xbe )
     35 
     36 class PVMFMetadataInfoMessageInterface : public PVInterface
     37 {
     38     public:
     39         /*
     40            Returns the code and space UUID for this info message
     41 
     42            @param aCode Reference to an integer which will be filled in with event code
     43            @param aUuid Reference to a PVUuid which will be filled in with UUID assocated to event code
     44 
     45            @return None
     46         */
     47         virtual void GetCodeUUID(int32& aCode, PVUuid& aUuid) = 0;
     48 
     49         /*
     50            Returns a pointer to the next info message in the linked list. If NULL,
     51            the current info message is the last element in the list.
     52 
     53            @return Pointer to the next message in the list. NULL if at the end of list
     54         */
     55         virtual Oscl_Vector<PvmiKvp, OsclMemAllocator>& GetMetadataVector() = 0;
     56 
     57         // From PVInterface
     58         /*
     59            Increments the reference count for this info message object
     60         */
     61         virtual void addRef() = 0;
     62         /*
     63            Decrements the reference count for this info message object and deletes
     64            this object if count goes to 0.
     65         */
     66         virtual void removeRef() = 0;
     67         /*
     68            Returns the extension interface for the specified UUID if this info
     69            message object supports it. If the requested extension interface is supported
     70            true is returned, else false.
     71         */
     72         virtual bool queryInterface(const PVUuid& uuid, PVInterface*& iface) = 0;
     73 };
     74 
     75 
     76 #endif // PVMF_METADATAINFOMESSAGE_EXTENSION_H_INCLUDED
     77 
     78