osdhandler.h

来自「Linux下比较早的基于命令行的DVD播放器」· C头文件 代码 · 共 122 行

//
// Copyright (c) 2005 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 OUTPUT_OSDHANDLER_H
#define OUTPUT_OSDHANDLER_H
//------------------------------------------------------------------------------

#include "enums.h"

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

namespace output { namespace osd {

class DVDPosition;

} }

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

namespace output {

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

/**
 * Base class for OSD handlers. This implementation does nothing.
 *
 * All real implementations should ensure that the updating functions
 * execute practically instantaneously.
 */
class OSDHandler
{
protected:
    /**
     * Indicate if DVD info is enabled or not.
     */
    bool dvdInfoEnabled;

public:
    /**
     * Construct the OSD handler. The DVD info will be disabled.
     */
    OSDHandler();

    /**
     * Virtual destructor.
     */
    virtual ~OSDHandler();

    /**
     * Disable the DVD info.
     */
    virtual void disableDVDInfo();

    /**
     * Update the DVD position. It makes the DVD info enabled!
     */
    virtual void updateDVDPosition(const output::osd::DVDPosition& dvdPosition);

    /**
     * Update the DVD languages.
     */
    virtual void updateDVDLanguages(unsigned audioLanguageCode, unsigned spuLanguageCode);

    /**
     * Update the volume.
     */
    virtual void updateVolume(unsigned volume);

    /**
     * Show the OSD. Note, that it may actually mean to hide the OSD
     */
    virtual void show();

    /**
     * Set the playmode.
     */
    virtual void setPlayMode(playMode_t playMode);
};

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

inline OSDHandler::OSDHandler() :
    dvdInfoEnabled(false)
{
}

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

inline OSDHandler::~OSDHandler()
{
}

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

} /* namespace output */

//------------------------------------------------------------------------------
#endif // OUTPUT_OSDHANDLER_H

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