filedescriptor.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_UTIL_FILEDESCRIPTOR_H
#define DXR3PLAYER_UTIL_FILEDESCRIPTOR_H
//------------------------------------------------------------------------------

#include "util/POSIX.h"

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

/**
 * Wrapper around a file descriptor.
 */
class FileDescriptor
{
protected:
    /**
     * The file descriptor.
     */
    int fd;

public:
    /**
     * Construct the file descriptor. The file descriptor is initialized to -1.
     */
    FileDescriptor();

    /**
     * Destroy the device. It will be closed, if open.
     */
    ~FileDescriptor();

    /**
     * Get the file descriptor.
     */
    int getFileDescriptor() const;

    /**
     * Close the device, if open.
     */
    void close();
};

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

inline FileDescriptor::FileDescriptor() : fd(-1)
{
}

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

inline void FileDescriptor::close()
{
    if (fd>=0) {
        POSIX::close(fd);
        fd = -1;
    }
}

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

inline FileDescriptor::~FileDescriptor()
{
    close();
}

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

inline int FileDescriptor::getFileDescriptor() const
{
    return fd;
}

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_UTIL_FILEDESCRIPTOR_H

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