protocols/rtp_payload_parser/rfc_3640/include/rfc3640_payload_parser.h

/* ------------------------------------------------------------------
 * Copyright (C) 2008 PacketVideo
 *
 * 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.
 * -------------------------------------------------------------------
 */
///////////////////////////////////////////////////////////////////////////////
//
// RFC3640_payload_parser.h
//
// Payload parser for RFC3640 RTP format (mpeg4 for DVB and others).
//
// This implementation is intentionally incomplete.  It does not implement
// interleaved access units (AUs) nor does it handle missing "crucial" AUs.
// Neither of which are common for DVB.
//
// This implementation currently only supports AAC high-bit-rate (AAChbr).
// Other modes can be added by implementing mediaInfo parsing in Init.
//
///////////////////////////////////////////////////////////////////////////////

#ifndef RFC3640_PAYLOAD_PARSER_H_INCLUDED
#define RFC3640_PAYLOAD_PARSER_H_INCLUDED

#ifndef PAYLOAD_PARSER_H_INCLUDED
#include "payload_parser.h"
#endif

class RFC3640PayloadParser : public IPayloadParser
{
    public:
        OSCL_IMPORT_REF          RFC3640PayloadParser(void);
        OSCL_IMPORT_REF virtual ~RFC3640PayloadParser();

        //Initializes the parser.
        //This is where the parser gets the SDP MIME types
        //that configure the RFC3640 header format.
        OSCL_IMPORT_REF bool Init(mediaInfo* config);

        //This parses the input payload packets, skips over the AU headers,
        //and returns the new pointers as fragments in the output payload
        //fragment vector.
        OSCL_IMPORT_REF PayloadParserStatus Parse(const Payload& inputPacket,
                Oscl_Vector<Payload, OsclMemAllocator>& vParsedPayloads);

        //Not supported or implemented.
        OSCL_IMPORT_REF void Reposition(const bool   adjustSequence = false,
                                        const uint32 stream = 0,
                                        const uint32 seqnum = 0);

        //Not supported or implemented.
        OSCL_IMPORT_REF uint32 GetMinCurrTimestamp(void);

    private:
        //These correspond to the MIME types specified in RFC3640.
        bool   headersPresent;
        uint32 headersLength;
        uint32 sizeLength;
        uint32 indexLength;
        uint32 indexDeltaLength;
        uint32 CTSDeltaLength;
        uint32 DTSDeltaLength;
        bool   randomAccessIndication;
        uint32 auxDataSizeLength;
};

#endif //RFC3640_PAYLOAD_PARSER_H_INCLUDED