extension.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 "Extension.h"
#include "Sector.h"

#include <cstdio>

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

using dvd::demux::Extension;

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

Extension::Header::Header() :
    orig_or_copy(0),
    copyright(0),
    data_alignment(0),
    pes_priority(0),
    pes_scrambling(0),
    res1(2),
    pes_ext(0),
    pes_crc(0),
    add_copy(0),
    dsm_mode(0),
    es_rate(0),
    escr(0),
    pts_dts(0),
    length(0)
{
}

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

pts_t Extension::TS::getValue() const
{
    pts_t value = ts_32_30;
    
    value <<=8; value |= ts_29_22;
    value <<=7; value |= ts_21_15;
    value <<=8; value |= ts_14_07;
    value <<=7; value |= ts_06_00;

    return value;
}

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

Extension::Extension() : rest(0)
{
}

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

Extension::Extension(SectorBitReader& reader) :
    rest(0)
{
    reader.read(&header, sizeof(header));
    if (header.length>0) {
        rest = new unsigned char[header.length];
        reader.read(rest, header.length);
    }
}

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

Extension::Extension(const Extension& other) :
    header(other.header),
    rest(new unsigned char[other.header.length])
{
    memcpy(rest, other.rest, other.header.length);
}


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

Extension& Extension::operator=(const Extension& other)
{
    header = other.header;
    delete[] rest;

    rest = new unsigned char[other.header.length];
    memcpy(rest, other.rest, other.header.length);

    return *this;
}

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

pts_t Extension::getPTS() const
{
    if ( (header.pts_dts&0x02)==0 ) return INVALID_PTS;
    else return reinterpret_cast<const TS*>(rest)->getValue();
}

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

pts_t Extension::getDTS() const
{
    if (header.pts_dts!=0x03) return INVALID_PTS;
    else return reinterpret_cast<const TS*>(rest + 5)->getValue();
    
}

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