bitstream/Factory.cpp

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// Torc - Copyright 2011-2013 University of Southern California.  All Rights Reserved.
// $HeadURL$
// $Id$

// This program is free software: you can redistribute it and/or modify it under the terms of the 
// GNU General Public License as published by the Free Software Foundation, either version 3 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 General Public License for more details.
// 
// You should have received a copy of the GNU General Public License along with this program.  If 
// not, see <http://www.gnu.org/licenses/>.

/// \file
/// \brief Source for the Factory class.

#include "torc/bitstream/Factory.hpp"
#include "torc/bitstream/Virtex.hpp"
#include "torc/bitstream/VirtexE.hpp"
#include "torc/bitstream/Virtex2.hpp"
#include "torc/bitstream/Virtex2P.hpp"
#include "torc/bitstream/Virtex4.hpp"
#include "torc/bitstream/Virtex5.hpp"
#include "torc/bitstream/Virtex6.hpp"
#include "torc/bitstream/Virtex7.hpp"
#include "torc/bitstream/Spartan3E.hpp"
#include "torc/bitstream/Spartan6.hpp"
#include <fstream>

namespace torc {
namespace bitstream {

    using torc::common::DeviceDesignator;

    BitstreamSharedPtr Factory::newBitstreamPtr(const char* inFileName) {
        // open the file as a stream
        BitstreamSharedPtr bitstreamPtr;
        std::fstream fileStream(inFileName, std::ios::binary | std::ios::in);
        if(!fileStream.good()) return bitstreamPtr;

        // read the header and determine the device family
        Bitstream bitstream;
        bitstream.readHeader(fileStream);
        DeviceDesignator designator(bitstream.getDeviceName());

        // instantiate the appropriate bitstream
        switch(designator.getFamily()) {
        case DeviceDesignator::eFamilyVirtex:
            bitstreamPtr = BitstreamSharedPtr(new Virtex()); break;
        case DeviceDesignator::eFamilyVirtexE:
            bitstreamPtr = BitstreamSharedPtr(new VirtexE()); break;
        case DeviceDesignator::eFamilyVirtex2:
            bitstreamPtr = BitstreamSharedPtr(new Virtex2()); break;
        case DeviceDesignator::eFamilyVirtex2P:
            bitstreamPtr = BitstreamSharedPtr(new Virtex2P()); break;
        case DeviceDesignator::eFamilyVirtex4:
            bitstreamPtr = BitstreamSharedPtr(new Virtex4()); break;
        case DeviceDesignator::eFamilyVirtex5:
            bitstreamPtr = BitstreamSharedPtr(new Virtex5()); break;
        case DeviceDesignator::eFamilyVirtex6:
            bitstreamPtr = BitstreamSharedPtr(new Virtex6()); break;
        case DeviceDesignator::eFamilyArtix7:
        case DeviceDesignator::eFamilyKintex7:
        case DeviceDesignator::eFamilyVirtex7:
        case DeviceDesignator::eFamilyZynq7000:
            bitstreamPtr = BitstreamSharedPtr(new Virtex7()); break;
        case DeviceDesignator::eFamilySpartan3E:
            bitstreamPtr = BitstreamSharedPtr(new Spartan3E()); break;
        case DeviceDesignator::eFamilySpartan6:
            bitstreamPtr = BitstreamSharedPtr(new Spartan6()); break;
        default:
            return bitstreamPtr;
        }

        // rewind the stream
        fileStream.seekg(0, std::ios::beg);
        bitstreamPtr->read(fileStream);

        // return the newly created bitstream
        return bitstreamPtr;
    }

} // namespace bitstream
} // namespace torc