dvddump.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_DVDDUMP_H
#define DXR3PLAYER_DVD_DVDDUMP_H
//------------------------------------------------------------------------------

#include "Device.h"
#include "DVD.h"

#include "util/DefaultAllocator.h"

#include <map>
#include <functional>

#include <libmpdvdkit/nav_types.h>

#include <cstdio>

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

namespace ifodump {

class IFOReader;
class NAVReader;

}

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

namespace dvd {

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

/**
 * DVD device which works from a DVD dump.
 */
class DVDDump : public Device
{
public:
    /**
     * The magic number for dumps.
     */
    static const char magic[4];

    /**
     * The current version. It can be:
     *
     * - 1: from dxr3Player 0.9.4
     *
     * Version 0 means and unversioned dump. It is treated as dump
     * version 1.
     */
    static const unsigned currentVersion = 1;

    /**
     * Function to check if the given dump file is versioned or not.
     */
    static bool isVersioned(FILE* f);
    
private:
    /**
     * Structure for the navigation structures.
     */
    struct NAVInfo {
        /**
         * The PCI.
         */
        pci_t pci;

        /**
         * The DSI
         */
        dsi_t dsi;
    };

    /**
     * Type for mapping VOBU start sectors to NAV infos.
     */
    typedef std::map<size_t, NAVInfo, std::greater<size_t>, DefaultAllocator > navMap_t;

    /**
     * IFO information structure.
     */
    struct IFOInfo {
        /**
         * The IFO handle.
         */
        ifo_handle_t ifoHandle;

        /**
         * NAV mapping for the menu VOBUs.
         */
        navMap_t menuNAVs;
        
        /**
         * NAV mapping for the title VOBUs.
         */
        navMap_t titleNAVs;
    };

    /**
     * Our own file handler.
     */
    class FileHandler : public dvd::FileHandler 
    {
    private:
        /**
         * Copy the given PCI with endianness conversion
         */
        static void copy(pci_t& dest, const pci_t& src);

        /**
         * Copy the given DSI with endianness conversion
         */
        static void copy(dsi_t& dest, const dsi_t& src);

        /**
         * The NAV map to use to generate bogus sectors.
         */
        const navMap_t& navs;

    public:
        /**
         * Construct the file handler with the given map.
         */
        FileHandler(const navMap_t& navs);

        /**
         * @see dvd::FileHandler::getLength
         */
        virtual size_t getLength();

        /**
         * @see dvd::FileHandler::readSectors
         */
        virtual void readSectors(void* dest, size_t offset, size_t numSectors);

    private:
        /**
         * Read a single sector into the given destination.
         */
        void readSector(void* dest, size_t offset) const;
    };
public:
    /**
     * Check if the given file is a dump file.
     */
    static bool isDumpFile(const char* path);

private:
    /**
     * The open indicator.
     */
    bool opened;

    /**
     * The IFO information
     */
    IFOInfo ifoInfos[DVD::maxNumberOfVTSs+1];
    
public:
    /**
     * Construct the DVD dump device from the given dump file.
     */
    DVDDump(const char* dumpFile);

    /**
     * @see Device::hasDisk
     */
    virtual bool hasDisk();

    /**
     * @see Device::isOpen
     */
    virtual bool isOpen() const;
    
    /**
     * @see Device::open
     */
    virtual bool open();

    /**
     * @see Device::getID
     */
    virtual void getID(unsigned char* dest) const;

    /**
     * @see Device::getIFOHandle
     */
    virtual const ifo_handle_t* getIFOHandle(unsigned titleNo) const;
    
    /**
     * @see Device::openFile
     */
    virtual dvd::FileHandler* openFile(unsigned titleNo, bool isMenu) const;

    /**
     * @see Device::close
     */
    virtual void close();

    /**
     * @see Device::eject
     */
    virtual void eject();

private:
    /**
     * Read the IFO data for the IFO with the given index.
     */
    void readIFO(ifodump::IFOReader& reader, size_t ifoIndex);

    /**
     * Read the NAV data for the IFO with the given index.
     */
    void readNAV(ifodump::NAVReader& reader, size_t ifoIndex);

    /**
     * Read the NAV data for the VOBU address map into the giveb map.
     */
    void readNAV(ifodump::NAVReader& reader, navMap_t& dest, 
                 vobu_admap_t* vobuAddresses);
};
 
//------------------------------------------------------------------------------

} /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_DVD_DVDDUMP_H

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