simplebuffer.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_SIMPLEBUFFER_H
#define DXR3PLAYER_SIMPLEBUFFER_H
//------------------------------------------------------------------------------

/**
 * General buffer object the size of which can change.
 */
class SimpleBuffer
{
private:
    /**
     * The data.
     */
    const unsigned char* data;

    /**
     * The length of the data.
     */
    size_t length;

public:
    /**
     * Construct an empty buffer.
     */
    SimpleBuffer();

    /**
     * Construct a buffer with the given length.
     */
    SimpleBuffer(size_t length);

    /**
     * Destroy the buffer.
     */
    ~SimpleBuffer();

    /**
     * Get the data pointer.
     */
    const unsigned char* getData() const;

    /**
     * Get the length of the data.
     */
    size_t getLength() const;

    /**
     * Set the length of the data. It will cause deleting the old
     * buffer and allocating a new one.
     */
    void setLength(size_t len);
};

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

inline SimpleBuffer::SimpleBuffer() :
    data(0), length(0)
{
}

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

inline SimpleBuffer::SimpleBuffer(size_t length) :
    data(new unsigned char[length]), length(length)
{
}

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

inline SimpleBuffer::~SimpleBuffer()
{
    delete[] data;
}

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

inline const unsigned char* SimpleBuffer::getData() const
{
    return data;
}

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

inline size_t SimpleBuffer::getLength() const
{
    return length;
}

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

inline void SimpleBuffer::setLength(size_t len)
{
    delete[] data;
    
    length = len;
    data = new unsigned char[length];
}

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_BUFFER_H

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