cec: bumped interface version to 4 stay in sync with the lib version. added changelog...

[deb_libcec.git] / src / lib / util / buffer.h

#pragma once
/*
 * This file is part of the libCEC(R) library.
 *
 * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
 * libCEC(R) is an original work, containing original code.
 *
 * libCEC(R) is a trademark of Pulse-Eight Limited.
 *
 * This program is dual-licensed; 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.
 *
 *
 * Alternatively, you can license this library under a commercial license,
 * please contact Pulse-Eight Licensing for more information.
 *
 * For more information contact:
 * Pulse-Eight Licensing       <license@pulse-eight.com>
 *     http://www.pulse-eight.com/
 *     http://www.pulse-eight.net/
 */

#include "threads.h"
#include <queue>

template<typename _BType>
  struct CecBuffer
  {
  public:
    CecBuffer(int iMaxSize = 100)
    {
      m_maxSize = iMaxSize;
    }
    virtual ~CecBuffer(void) {}

    int Size(void) const { return m_buffer.size(); }

    bool Push(_BType entry)
    {
      CLockObject lock(&m_mutex);
      if (m_buffer.size() == m_maxSize)
        return false;

      m_buffer.push(entry);
      return true;
    }

    bool Pop(_BType &entry)
    {
      bool bReturn(false);
      CLockObject lock(&m_mutex);
      if (m_buffer.size() > 0)
      {
        entry = m_buffer.front();
        m_buffer.pop();
        bReturn = true;
      }
      return bReturn;
    }

  private:
    int                m_maxSize;
    std::queue<_BType> m_buffer;
    CMutex             m_mutex;
  };