targetposition.cc

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

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

#include "TargetPosition.h"
#include "SPRM.h"
#include "State.h"

#include "util/Log.h"

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

using dvd::vm::TargetPosition;

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

bool TargetPosition::enterPGC(unsigned pgcNo, unsigned programNo)
{
    if (isInVideoManager() && !isInMenu()) {
        Log::error("dvd::vm::TargetPosition::enterPGC: cannot enter into PGC in the first play PGC!\n");
        return false;
    }

    PGCTable pgcTable = getPGCTable();
    if (!pgcTable) {
        Log::fatal("dvd::vm::TargetPosition::enterPGC: no PGC table found in VTS %u\n", getVTSNumber());
        return false;
    }
    
    if (pgcNo>=1 && pgcNo<=pgcTable.getNumberOfPGCs()) {
        setPGCNumber(pgcNo);
        return enterProgram(programNo);
    } else {
        Log::error("dvd::vm::TargetPosition::enterPGC: invalid PGC number: %u!\n", pgcNo);
        return false;
    }
}

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

void TargetPosition::enterFirstPlayPGC()
{
    setVTSNumber(Position::VTS_VMG);
    clearInMenu();
    setPGCNumber(0);
}

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

bool TargetPosition::enterMenu(unsigned menuID)
{
    setInMenu();

    PGCTable pgcTable = getPGCTable();
    if (!pgcTable) {
        Log::fatal("dvd::vm::TargetPosition::enterMenu: cannot enter menu %u because no PGC table found\n", menuID);
        return false;
    }
    
    for(unsigned pgcNo = 1; pgcNo<=pgcTable.getNumberOfPGCs(); ++pgcNo)
    {
        unsigned entryID = pgcTable.getPGCInfo(pgcNo).getEntryID();
        
        if ( (entryID&0x80)==0x80 && (entryID&0x7f)==menuID) {
            return enterPGC(pgcNo);
        }
    }

    Log::error("dvd::vm::TargetPosition::enterMenu: menu not found for ID %u\n", menuID);
    return false;
}

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

bool TargetPosition::enterMenu(unsigned menuID, bool forced)
{
    bool entered = enterMenu(menuID);
    
    if (forced && !entered) {
        Log::debug("dvd::vm::TargetPosition::enterMenu: trying to find menu elsewhere\n");

        unsigned currentVTSNumber = getVTSNumber();

        if (currentVTSNumber!=Position::VTS_VMG) {
            setVTSNumber(Position::VTS_VMG);
            entered = enterMenu(menuID);
        }
        
        size_t numVTSs = state.getDVD()->getVMG()->getNumberOfTitleSets();
        for(size_t i = 1; i<=numVTSs && !entered; ++i) {
            if (currentVTSNumber!=i) {
                setVTSNumber(i);
                entered = enterMenu(menuID);
            }
        }
    }

    return entered;
}

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

bool TargetPosition::enterVMGMenu(unsigned menuID)
{
    setVTSNumber(Position::VTS_VMG);

    return enterMenu(menuID);
}

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

bool TargetPosition::enterVMGPGC(unsigned pgcNo)
{
    setVTSNumber(Position::VTS_VMG);
    setInMenu();

    return enterPGC(pgcNo);
}

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

bool TargetPosition::enterNextPGC()
{
    PGC pgc = getPGC();
    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::enterNextPGC: cannot enter PGC following invalid PGC\n");
        return false;
    }

    return enterPGC(pgc.getNextPGCNumber());
}

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

bool TargetPosition::enterPreviousPGC()
{
    PGC pgc = getPGC();
    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::enterPreviousPGC: cannot enter PGC preceding invalid PGC\n");
        return false;
    }

    return enterPGC(pgc.getPreviousPGCNumber());
}

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

bool TargetPosition::enterGoUpPGC()
{
    PGC pgc = getPGC();
    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::enterGoUpPGC: cannot enter GoUp PGC of invalid PGC\n");
        return false;
    }

    return enterPGC(pgc.getGoUpPGCNumber());
}

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

bool TargetPosition::enterProgram(unsigned programNo)
{
    PGC pgc = getPGC();

    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::enterProgram: cannot enter program %u of invalid PGC\n", programNo);
        return false;
    } else if (pgc.isEmpty()) {
        return enterCell(0);
    } else if (programNo<1 || programNo>pgc.getNumberOfPrograms()) {
        Log::error("dvd::vm::TargetPosition::enterProgram: Invalid program number: %u\n", programNo);
        return false;
    } else {
        return enterCell(pgc.getEntryCellNumber(programNo));
    }
}

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

bool TargetPosition::repeatProgram()
{
    PGC pgc = getPGC();

    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::repeatProgram: cannot repeat program in invalid PGC\n");
        return false;
    } else if (pgc.isEmpty()) {
        Log::fatal("dvd::vm::TargetPosition::repeatProgram: cannot repeat program in empty PGC\n");
        return false;
    } else {
        return enterProgram(pgc.getProgramNumber(getCellNumber()));
    }
}

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

bool TargetPosition::enterNextProgram()
{
    PGC pgc = getPGC();

    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::enterNextProgram: cannot enter next program in invalid PGC\n");
        return false;
    } else if (pgc.isEmpty()) {
        Log::fatal("dvd::vm::TargetPosition::enterNextProgram: cannot enter next program in empty PGC\n");
        return false;
    } else {
        return enterProgram(pgc.getProgramNumber(getCellNumber())+1);
    }
}

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

bool TargetPosition::enterPreviousProgram()
{
    PGC pgc = getPGC();

    if (!pgc) {
        Log::fatal("dvd::vm::TargetPosition::enterPreviousProgram: cannot enter previous program in invalid PGC\n");
        return false;
    } else if (pgc.isEmpty()) {
        Log::fatal("dvd::vm::TargetPosition::enterPreviousProgram: cannot enter previous program in empty PGC\n");
        return false;
    } else {
        return enterProgram(pgc.getProgramNumber(getCellNumber())-1);
    }
}

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

bool TargetPosition::enterLastProgram()