timedpackettemplate.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_PACKET_TIMEDPACKETTEMPLATE_H
#define DXR3PLAYER_DVD_PACKET_TIMEDPACKETTEMPLATE_H
//------------------------------------------------------------------------------

#include "types.h"

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

namespace dvd { namespace packet {

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

/**
 * Mixin template for packets that have a time stamp.
 */
template <class Super>
class TimedPacketTemplate : public Super
{
private:
    /**
     * The time stamp.
     */
    pts_t pts;

public:
    /**
     * Construct the packet with the given timestamp.
     */
    TimedPacketTemplate(pts_t pts);

    /**
     * Construct the packet with the given timestamp and another
     * parameter passed to the parent class' constructor.
     */
    template <typename T>
    TimedPacketTemplate(T& p1, pts_t pts);

    /**
     * Construct the packet with the given timestamp and 2 other
     * parameters passed to the parent class' constructor.
     */
    template <typename T1, typename T2>
    TimedPacketTemplate(T1& p1, T2& p2, pts_t pts);

    /**
     * Construct the packet with the given timestamp and 3 other
     * parameters passed to the parent class' constructor.
     */
    template <typename T1, typename T2, typename T3>
    TimedPacketTemplate(T1 p1, T2 p2, T3 p3, pts_t pts);

    /**
     * Construct the packet with the given timestamp and 4 other
     * parameters passed to the parent class' constructor.
     */
    template <typename T1, typename T2, typename T3, typename T4>
    TimedPacketTemplate(T1& p1, T2& p2, T3& p3, T4& p4, pts_t pts);

    /**
     * Get the timestamp.
     */
    pts_t getPTS() const;
    
    /**
     * Advance the timestamp with the given difference.
     */
    void advancePTS(ptsdiff_t diff);

    /**
     * Invalidate the PTS.
     */
    void invalidatePTS();
};

//------------------------------------------------------------------------------
// Template definitions
//------------------------------------------------------------------------------

template <class Super>
inline TimedPacketTemplate<Super>::TimedPacketTemplate(pts_t pts) :
    pts(pts)
{
}

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

template <class Super>
template <typename T>
inline TimedPacketTemplate<Super>::
TimedPacketTemplate(T& p1, pts_t pts) :
    Super(p1),
    pts(pts)
{
}

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

template <class Super>
template <typename T1, typename T2>
inline TimedPacketTemplate<Super>::
TimedPacketTemplate(T1& p1, T2& p2, pts_t pts) :
    Super(p1, p2),
    pts(pts)
{
}

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

template <class Super>
template <typename T1, typename T2, typename T3>
inline TimedPacketTemplate<Super>::
TimedPacketTemplate(T1 p1, T2 p2, T3 p3, pts_t pts) :
    Super(p1, p2, p3),
    pts(pts)
{
}

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

template <class Super>
template <typename T1, typename T2, typename T3, typename T4>
inline TimedPacketTemplate<Super>::
TimedPacketTemplate(T1& p1, T2& p2, T3& p3, T4& p4, pts_t pts) :
    Super(p1, p2, p3, p4),
    pts(pts)
{
}

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

template <class Super>
inline pts_t TimedPacketTemplate<Super>::getPTS() const
{
    return pts;
}

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

template <class Super>
inline void TimedPacketTemplate<Super>::advancePTS(ptsdiff_t diff)
{
    if (pts!=INVALID_PTS) {
        if (diff>=0 || (pts+diff)<pts) pts += diff;
        else pts = 0;
    }
}

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

template <class Super>
inline void TimedPacketTemplate<Super>::invalidatePTS()
{
    pts = INVALID_PTS;
}

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

} /* namespace dvd::packet */ } /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_DVD_PACKET_TIMEDPACKETTEMPLATE_H

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