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# Ap4DataBuffer.h

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    00001 /*****************************************************************
    00002 |
    00003 |    AP4 - Data Buffer Objects
    00004 |
    00005 |    Copyright 2002-2006 Gilles Boccon-Gibod & Julien Boeuf
    00006 |
    00007 |
    00008 |    This file is part of Bento4/AP4 (MP4 Atom Processing Library).
    00009 |
    00010 |    Unless you have obtained Bento4 under a difference license,
    00011 |    this version of Bento4 is Bento4|GPL.
    00012 |    Bento4|GPL is free software; you can redistribute it and/or modify
    00013 |    it under the terms of the GNU General Public License as published by
    00014 |    the Free Software Foundation; either version 2, or (at your option)
    00015 |    any later version.
    00016 |
    00017 |    Bento4|GPL is distributed in the hope that it will be useful,
    00018 |    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00019 |    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00020 |    GNU General Public License for more details.
    00021 |
    00022 |    You should have received a copy of the GNU General Public License
    00023 |    along with Bento4|GPL; see the file COPYING.  If not, write to the
    00024 |    Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    00025 |    02111-1307, USA.
    00026 |
    00027  ****************************************************************/
    00028
    00029 #ifndef _AP4_DATA_BUFFER_H_
    00030 #define _AP4_DATA_BUFFER_H_
    00031
    00032 /*----------------------------------------------------------------------
    00033 |   includes
    00034 +---------------------------------------------------------------------*/
    00035 #include "Ap4Types.h"
    00036
    00037 /*----------------------------------------------------------------------
    00038 |   AP4_DataBuffer
    00039 +---------------------------------------------------------------------*/
    00040 class AP4_DataBuffer
    00041 {
    00042  public:
    00043     // constructors & destructor
    00044     AP4_DataBuffer();
    00045     AP4_DataBuffer(AP4_Size size);
    00046     AP4_DataBuffer(const void* data, AP4_Size data_size);
    00047     AP4_DataBuffer(const AP4_DataBuffer& other);
    00048     virtual ~AP4_DataBuffer();
    00049
    00050     // data buffer handling methods
    00051     AP4_Result SetBuffer(AP4_Byte* buffer, AP4_Size buffer_size);
    00052     AP4_Result SetBufferSize(AP4_Size buffer_size);
    00053     AP4_Size   GetBufferSize() const { return m_BufferSize; }
    00054
    00055     // data handling methods
    00056     const AP4_Byte* GetData() const { return m_Buffer; }
    00057     AP4_Byte*       UseData() { return m_Buffer; };
    00058     AP4_Size        GetDataSize() const { return m_DataSize; }
    00059     AP4_Result      SetDataSize(AP4_Size size);
    00060     AP4_Result      SetData(const AP4_Byte* data, AP4_Size data_size);
    00061
    00062     // memory management
    00063     AP4_Result      Reserve(AP4_Size size);
    00064
    00065  protected:
    00066     // members
    00067     bool      m_BufferIsLocal;
    00068     AP4_Byte* m_Buffer;
    00069     AP4_Size  m_BufferSize;
    00070     AP4_Size  m_DataSize;
    00071
    00072     // methods
    00073     AP4_Result ReallocateBuffer(AP4_Size size);
    00074
    00075 private:
    00076     // forbid this
    00077     AP4_DataBuffer& operator=(const AP4_DataBuffer& other);
    00078 };
    00079
    00080 #endif // _AP4_DATA_BUFFER_H_
    00081