dynamicbuffer.cc

来自「Linux下比较早的基于命令行的DVD播放器」· CC 代码 · 共 44 行

//
// 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 "DynamicBuffer.h"

#include <cstring>

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

void DynamicBuffer::ensureCapacity(size_t cap)
{
    if (capacity>=cap) return;
    
    size_t         newCapacity = ((cap+15)/16)*16;
    unsigned char* newData = new unsigned char[newCapacity];
    
    if (capacity>0) memcpy(newData, data, capacity);
    delete[] data;

    data     = newData;
    capacity = newCapacity;
}

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