timeddatablockpacket.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_TIMEDDATABLOCKPACKET_H
#define DXR3PLAYER_DVD_PACKET_TIMEDDATABLOCKPACKET_H
//------------------------------------------------------------------------------

#include "dvd/packet/DataBlockPacket.h"
#include "dvd/packet/TimedPacketTemplate.h"
#include "dvd/packet/PacketConverter.h"

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

namespace dvd { namespace packet {

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

/**
 * Data block packet class with a timestamp.
 */
class TimedDataBlockPacket : public DataBlockPacket
{
public:
    /**
     * Convert the given base packet reference into a timed data block
     * packet reference, if that packet is a timed data block packet.
     */
    static Reference<TimedDataBlockPacket> convert(Reference<Packet> packet);

protected:
    /**
     * Construct a time data block packet.
     */
    TimedDataBlockPacket(const DataBlockType& type);

public:
    /**
     * @see Packet::processOn
     */
    virtual void processOn(PacketProcessor& processor);

    /**
     * Get the timestamp.
     */
    virtual pts_t getPTS() const = 0;

    /**
     * Advance the timestamp with the given difference.
     */
    virtual void advancePTS(ptsdiff_t diff) = 0;

    /**
     * Invalidate the timestamp.
     */
    virtual void invalidatePTS() = 0;
};

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

inline Reference<TimedDataBlockPacket> 
TimedDataBlockPacket::convert(Reference<Packet> packet)
{
    return PacketConverter<TimedDataBlockPacket>().convert(packet);
}

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

inline TimedDataBlockPacket::
TimedDataBlockPacket(const DataBlockType& type) :
    DataBlockPacket(type)
{
}

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

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

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_DVD_PACKET_TIMEDDATABLOCKPACKET_H

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