dvd.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2002 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_H
#define DXR3PLAYER_DVD_H
//------------------------------------------------------------------------------

#include "Device.h"
#include "IFO.h"

#include <libmpdvdkit/ifo_types.h>

#include <cstdlib>

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

namespace dvd {

class Device;
class VMG;
class VTS;

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

/**
 * Class describing a DVD. 
 */
class DVD
{
public:
    /**
     * The maximum number of VTSs.
     */
    static const size_t maxNumberOfVTSs = 99;

private:
    /**
     * The size of a disc ID in bytes.
     */
    static const size_t discIDLength = 16;

    /**
     * The DVD device we are using.
     */
    Device& device;

    /**
     * The ID of the disc currently opened in printable (hexadecimal) format.
     */
    char discID[2*discIDLength + 1];

    /**
     * The VMG of the DVD.
     */
    VMG vmg;

    /**
     * The VTSs on the DVD.
     */
    VTS vtss[maxNumberOfVTSs];

public:
    /**
     * Construct an instance of this class representing the given DVD
     * device.
     */
    DVD(Device& device);

    /**
     * Determine if there is a disk in the DVD or not.
     */
    bool hasDisk() const;

    /**
     * Determine if the DVD is open or not.
     */
    bool isOpen() const;

    /**
     * Try to open the DVD device. If succeeds, read in all IFO data.
     *
     * @return if the opening has succeeded.
     */
    bool open();

    /**
     * Get the DVD's ID into the given buffer. It shall be a
     * 0-terminated string.
     */
    void getID(char* dest, size_t length) const;
    
    /**
     * Get the VMG.
     */
    const VMG* getVMG() const;
    
    /**
     * Get the VTS with the given number (1..99)
     */
    const VTS* getVTS(unsigned vtsNumber) const;

    /**
     * Open the menu file for the given IFO.
     *
     * @return the file opened.
     */
    File openMenuFile(const IFO* ifo) const;

    /**
     * Open the title file for the given IFO.
     *
     * @return the file opened
     */
    File openTitleFile(const IFO* ifo) const;

    /**
     * Close the DVD device.
     */
    void close();

    /**
     * Eject the DVD device.
     */
    void eject();

private:
    /**
     * Get the title numebr for the given IFO.
     */
    unsigned getTitleNumber(const IFO* ifo) const;
};

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

inline bool DVD::hasDisk() const
{
    return device.hasDisk();
}

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

inline bool DVD::isOpen() const
{
    return device.isOpen();
}

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

inline const VMG* DVD::getVMG() const
{
    return &vmg;
}

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

inline const VTS* DVD::getVTS(unsigned vtsNumber) const
{
    if (vtsNumber<1 || vtsNumber>maxNumberOfVTSs) return 0;
    else return (vtss[vtsNumber-1]) ? (vtss + vtsNumber -1) : 0;
}

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

inline unsigned DVD::getTitleNumber(const IFO* ifo) const
{
    if (ifo==&vmg) {
        return 0;
    } else {
        return (ifo - static_cast<const IFO*>(vtss)) + 1;
    }
}

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

inline File DVD::openMenuFile(const IFO* ifo) const
{
    return device.openFile(getTitleNumber(ifo), true);
}

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

inline File DVD::openTitleFile(const IFO* ifo) const
{
    return device.openFile(getTitleNumber(ifo), false);
}

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

} /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_DVD_H

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