fulldvddump.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2004 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_FULLDVDDUMP_H
#define DXR3PLAYER_DVD_FULLDVDDUMP_H
//------------------------------------------------------------------------------

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

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

namespace ifodump {

class IFOReader;

}

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

namespace dvd {

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

/**
 * DVD device which works from a full DVD dump.
 */
class FullDVDDump : public Device
{
private:
    /**
     * Our own file handler.
     */
    class FileHandler : public dvd::FileHandler 
    {
    private:
        /**
         * The template for the file name to open.
         */
        char* fileNameTemplate;

        /**
         * The current chunk.
         */
        size_t chunkNumber;

        /**
         * The file descriptor of the chunk currently opened. If >=0,
         * chunkNumber gives its number.
         */
        int fd;

    public:
        /**
         * Construct the file handler with the given map.
         */
        FileHandler(const char* dumpDirectory, size_t vtsNumber, bool isMenu);

        /**
         * Destroy the file handler.
         */
        ~FileHandler();

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

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

    private:
        /**
         * Open the given chunk, if not already opened.
         */
        void openChunk(size_t chunkNo);
    };

    /**
     * The name of the IFO dump file.
     *
     * FIXME: use a common constant with dumpdvd
     */
    static const char* ifoDumpName;

public:
    /**
     * The size of a chunk in sectors.
     */
    static const size_t chunkSize = 512 * 1024;
        
    /**
     * Check if the given file is a full dump directory.
     */
    static bool isDumpDirectory(const char* path);

private:
    /**
     * The directory this object represents.
     */
    char* dumpDirectory;

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

    /**
     * The IFO information
     */
    ifo_handle_t ifoHandles[DVD::maxNumberOfVTSs+1];
    
public:
    /**
     * Construct the DVD dump device from the given dump directory.
     */
    FullDVDDump(const char* dumpDirectory);

    /**
     * Destroy the DVD dump device.
     */
    ~FullDVDDump();

    /**
     * @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);
};
 
//------------------------------------------------------------------------------

} /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_DVD_FULLDVDDUMP_H

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