/* ***** BEGIN LICENSE BLOCK *****
*
* $Id: parseparams_byteio.cpp,v 1.2 2006/04/20 15:39:30 asuraparaju Exp $ $Name: Dirac_0_7_0 $
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (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.mozilla.org/MPL/
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* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
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* The Original Code is BBC Research and Development code.
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* The Initial Developer of the Original Code is the British Broadcasting
* Corporation.
* Portions created by the Initial Developer are Copyright (C) 2004.
* All Rights Reserved.
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* Contributor(s): Andrew Kennedy (Original Author)
*                 Anuradha Suraparaju
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#include <sstream> //For std::ostringstream
#include <libdirac_byteio/parseparams_byteio.h>
#include <libdirac_common/dirac_exception.h>

const unsigned int PP_AU_FRAME_NUM_SIZE = 4;

using namespace dirac;

ParseParamsByteIO::ParseParamsByteIO(const int& accessunit_fnum,
                                     const ByteIO& stream_data):
ByteIO(stream_data),
m_accessunit_fnum(accessunit_fnum)
{
    

}

ParseParamsByteIO::ParseParamsByteIO(const int& accessunit_fnum,
                                     const ByteIO& stream_data,
                                     ParseParams &parse_params):
ByteIO(stream_data),
m_accessunit_fnum(accessunit_fnum),
m_parse_params(parse_params)
{
    

}

ParseParamsByteIO::~ParseParamsByteIO()
{
}

//-------------public---------------------------------------------------------------

void ParseParamsByteIO::Input()
{
    // input AU Frame number
    m_accessunit_fnum = InputFixedLengthUint(PP_AU_FRAME_NUM_SIZE);
    
    ParseParams def_parse_params(m_accessunit_fnum);
   
    //input version
    m_parse_params.SetMajorVersion(InputVarLengthUint());
    m_parse_params.SetMinorVersion(InputVarLengthUint());

    // input profile
    m_parse_params.SetProfile(InputVarLengthUint());

    // input level
    m_parse_params.SetLevel(InputVarLengthUint());

    std::ostringstream errstr;
    // FIXME: for the time being all should be a perfect match until
    // we add support for previous versions
    if (m_parse_params.MajorVersion() != def_parse_params.MajorVersion() ||
        m_parse_params.MinorVersion() != def_parse_params.MinorVersion())
    {
        errstr << "Cannot handle version ";
        errstr << m_parse_params.MajorVersion() << ".";
        errstr << m_parse_params.MinorVersion() << ".";
        errstr << " Supported version is ";
        errstr << def_parse_params.MajorVersion() << ".";
        errstr << def_parse_params.MinorVersion() << std::endl;
    }

    if (m_parse_params.Profile() > def_parse_params.Profile())
    {
        errstr << "Cannot handle profile " << m_parse_params.Profile();
        errstr << ". Supported profile is " << def_parse_params.Profile();
    }
    
    if (m_parse_params.Level() > def_parse_params.Level())
    {
        errstr << "Cannot handle level " << m_parse_params.Level();
        errstr << ". Supported level is " << def_parse_params.Level();
    }

    if (errstr.str().size())
    {
        DIRAC_THROW_EXCEPTION(
            ERR_UNSUPPORTED_STREAM_DATA,
            errstr.str(),
            SEVERITY_FRAME_ERROR);
    }
}

void ParseParamsByteIO::Output()
{
    // output AU Frame number
    OutputFixedLengthUint(m_accessunit_fnum, PP_AU_FRAME_NUM_SIZE);
 
    //:TODO implement
    // output version
    OutputVarLengthUint(0);
    OutputVarLengthUint(1);

    // output profile
    OutputVarLengthUint(0);

    // output level
    OutputVarLengthUint(0);
}

int ParseParamsByteIO::GetIdNumber() const
{
    return m_accessunit_fnum;
}