statistics.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_STATISTICS_H
#define DXR3PLAYER_STATISTICS_H
//------------------------------------------------------------------------------

#include <cstdlib>

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

namespace dvd {

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

namespace packet {

class DataBlockType;

}

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

/**
 * Class to keep track of some statistics for the player.
 */
class Statistics
{
public:
    /**
     * Get the only instance.
     */
    static Statistics& get();

    static void sectorFree2Reading();

    static void sectorReading2Free();

    static void sectorReading2Processing();

    static void sectorProcessing2Free();

    static void addDataBlockPacket(const dvd::packet::DataBlockType& type);

    static void removeDataBlockPacket(const dvd::packet::DataBlockType& type);

public:
    /**
     * The number of buffered sectors in state FREE.
     */
    size_t numFreeSectors;

    /**
     * The number of buffered sectors in state READING.
     */
    size_t numReadingSectors;

    /**
     * The number of buffered sectors in state PROCESSING.
     */
    size_t numProcessingSectors;

    /**
     * The number of audio packets
     */
    size_t numAudioPackets;
    
    /**
     * The number of video packets
     */
    size_t numVideoPackets;
    
private:   
    /**
     * Construct the class.
     */
    Statistics();

public:
    /**
     * Print the statistics.
     */
    void print() const;
};

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

inline void Statistics::sectorFree2Reading()
{
    Statistics& s = Statistics::get();
    --s.numFreeSectors;
    ++s.numReadingSectors;
    s.print();
}

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

inline void Statistics::sectorReading2Free()
{
    Statistics& s = Statistics::get();
    --s.numReadingSectors;
    ++s.numFreeSectors;
    s.print();
}

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

inline void Statistics::sectorReading2Processing()
{
    Statistics& s = Statistics::get();
    --s.numReadingSectors;
    ++s.numProcessingSectors;
    s.print();
}

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

inline void Statistics::sectorProcessing2Free()
{
    Statistics& s = Statistics::get();
    --s.numProcessingSectors;
    ++s.numFreeSectors;
    s.print();
}

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

} /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_STATISTICS_H

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