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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 RTP_PAYLOAD_PARSER_BASE_H
     19 #define RTP_PAYLOAD_PARSER_BASE_H
     20 
     21 #include "rtp_payload_parser_include.h"
     22 #include "rtppp_media_frag_group.h"
     23 
     24 #include "pvmf_media_data.h"
     25 #include "pvmf_media_frag_group.h"
     26 
     27 #include "oscl_mem_mempool.h"
     28 #include "oscl_vector.h"
     29 
     30 enum RTP_PAYLOAD_PARSER_RET_CODE
     31 {
     32     RTP_PAYLOAD_PARSER_FAILURE = 0,
     33     RTP_PAYLOAD_PARSER_SUCCESS = 1,
     34     RTP_PAYLOAD_PARSER_INPUT_NOT_EXHAUSTED = 2,
     35     RTP_PAYLOAD_PARSER_MEMORY_ALLOC_FAILURE = 3,
     36     RTP_PAYLOAD_PARSER_DATA_NOT_READY = 4,
     37     RTP_PAYLOAD_PARSER_INTERNAL_QUEUE_IS_EMPTY = 5
     38 };
     39 
     40 #define RTP_PAYLOAD_PARSER_MAX_NUM_MEDIA_DATA  64
     41 
     42 typedef OsclMemAllocator PoolMemAlloc;
     43 
     44 class RTPPayloadParser
     45 {
     46     public:
     47         RTPPayloadParser();
     48         virtual ~RTPPayloadParser();
     49 
     50         /* single payload parse */
     51         OSCL_IMPORT_REF virtual RTP_PAYLOAD_PARSER_RET_CODE parseRTPPayload(PVMFSharedMediaDataPtr& rtpPacket,
     52                 PVMFSharedMediaDataPtr& accessUnit) = 0;
     53 
     54         /* multiple payload parsing - need not be implemented in deriving class */
     55         OSCL_IMPORT_REF virtual RTP_PAYLOAD_PARSER_RET_CODE parseRTPPayload(PVMFSharedMediaDataPtr& rtpPacket,
     56                 Oscl_Vector<PVMFSharedMediaDataPtr, OsclMemAllocator>*& accessUnits)
     57         {
     58             return RTP_PAYLOAD_PARSER_FAILURE;
     59         }
     60 
     61         virtual uint numBuffersRequired(PVMFSharedMediaDataPtr& rtpPacket)
     62         {
     63             return 1;
     64         }
     65 
     66 
     67         OSCL_IMPORT_REF virtual bool IsOutputBufferAvailable(uint& available, int count = 1);
     68 
     69         void notifyfreechunkavailable(OsclMemPoolFixedChunkAllocatorObserver& obs, int numChunks = 1)
     70         {
     71             if (iMediaDataGroupAlloc)
     72                 iMediaDataGroupAlloc->notifyfreechunkgroupavailable(obs, numChunks, NULL);
     73         }
     74 
     75         virtual void setRepositionFlag()
     76         {
     77             ibRepositionFlag = true;
     78         }
     79         virtual uint32 getMinCurrTimestamp()
     80         {
     81             return 0;
     82         }
     83 
     84     protected:
     85         RTPPPMediaFragGroupCombinedAlloc<PoolMemAlloc>* iMediaDataGroupAlloc;
     86         OsclMemPoolFixedChunkAllocator* iMediaDataImplMemPool;
     87         bool ibRepositionFlag;
     88 };
     89 
     90 
     91 #endif // RTP_PAYLOAD_PARSER_BASE_H
     92