/*****************************************************************************
 * DASHManager.cpp
 *****************************************************************************
 * Copyright © 2010 - 2011 Klagenfurt University
 *
 * Created on: Aug 10, 2010
 * Authors: Christopher Mueller <christopher.mueller@itec.uni-klu.ac.at>
 *          Christian Timmerer  <christian.timmerer@itec.uni-klu.ac.at>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "DASHManager.h"

using namespace dash;
using namespace dash::http;
using namespace dash::xml;
using namespace dash::logic;
using namespace dash::mpd;
using namespace dash::exception;

DASHManager::DASHManager    ( HTTPConnectionManager *conManager, MPD *mpd,
                              IAdaptationLogic::LogicType type ) :
    conManager( conManager ),
    currentChunk( NULL ),
    adaptationLogic( NULL ),
    logicType( type ),
    mpdManager( NULL ),
    mpd( mpd )
{
    this->mpdManager        = mpd::MPDManagerFactory::create( mpd );
    if ( this->mpdManager == NULL )
        return ;
    this->adaptationLogic   = AdaptationLogicFactory::create( this->logicType, this->mpdManager );
    if ( this->adaptationLogic == NULL )
        return ;
    this->conManager->attach(this->adaptationLogic);
}
DASHManager::~DASHManager   ()
{
    delete this->adaptationLogic;
    delete this->mpdManager;
}

int     DASHManager::read( void *p_buffer, size_t len )
{
    if ( this->currentChunk == NULL )
    {
        try
        {
            this->currentChunk = this->adaptationLogic->getNextChunk();
        }
        catch(EOFException &e)
        {
            this->currentChunk = NULL;
            return 0;
        }
    }

    int ret = this->conManager->read( this->currentChunk, p_buffer, len );
    if ( ret == 0 )
    {
        this->currentChunk = NULL;
        return this->read(p_buffer, len );
    }

    return ret;
}

int     DASHManager::peek( const uint8_t **pp_peek, size_t i_peek )
{
    if ( this->currentChunk == NULL )
    {
        try
        {
            this->currentChunk = this->adaptationLogic->getNextChunk();
        }
        catch(EOFException &e)
        {
            return 0;
        }
    }

    int ret = this->conManager->peek( this->currentChunk, pp_peek, i_peek );
    return ret;
}

const mpd::IMPDManager*         DASHManager::getMpdManager() const
{
    return this->mpdManager;
}

const logic::IAdaptationLogic*  DASHManager::getAdaptionLogic() const
{
    return this->adaptationLogic;
}
