sectorproxy.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2003 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card.

// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef DXR3PLAYER_DVD_READER_SECTORPROXY_H
#define DXR3PLAYER_DVD_READER_SECTORPROXY_H
//------------------------------------------------------------------------------

#include "dvd/reader/Buffer.h"

//------------------------------------------------------------------------------

namespace dvd { namespace reader {

//------------------------------------------------------------------------------

class Buffer;

//------------------------------------------------------------------------------

/**
 * Sector proxy. It designates a buffer and a sector
 * within. Instances are created by the buffer when the buffer
 * itself is created. Sector references refer to instances of this
 * class. 
 */
class SectorProxy
{
private:
    /**
     * The buffer we belong to.
     */
    Buffer* buffer;

    /**
     * The sector index.
     */
    size_t index;

public:
    /**
     * Construct the proxy with a buffer and an index of 0.
     */
    SectorProxy();

    /**
     * Set the index.
     */
    void setIndex(Buffer* b, size_t i);

    /**
     * Get the index.
     */
    size_t getIndex() const;

    /**
     * Get the sector with the given index.
     */
    const dvd::demux::Sector& getSector();

    /**
     * Add a reference to the sector.
     */
    void addReference();

    /**
     * Remove a reference from the sector.
     */
    void removeReference();
};

//------------------------------------------------------------------------------
// Inline definitions
//------------------------------------------------------------------------------

inline SectorProxy::SectorProxy() :
    buffer(0),
    index(0)
{
}

//------------------------------------------------------------------------------

inline void SectorProxy::setIndex(Buffer* b, size_t i)
{
    assert(buffer==0 && index==0);
    buffer = b;
    index = i;
}

//------------------------------------------------------------------------------

inline size_t SectorProxy::getIndex() const
{
    return index;
}

//------------------------------------------------------------------------------

inline const dvd::demux::Sector& SectorProxy::getSector()
{
    return buffer->getSector(index);
}

//------------------------------------------------------------------------------

inline void SectorProxy::addReference()
{
    buffer->addReference(index);
}

//------------------------------------------------------------------------------

inline void SectorProxy::removeReference()
{
    buffer->removeReference(index);
}

//------------------------------------------------------------------------------

} /* namespace dvd::reader */ } /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_DVD_READER_SECTORPROXY_H

// Local variables:
// mode: c++
// End: