Buffer_Trame.cpp

00001  /* Copyright (c) 2012 - 2013 AUTEUR
00002  *
00003  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED 
00004  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
00005  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
00006  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
00007  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
00008  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
00009  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
00010  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
00011  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00012  */
00013  
00014  /*
00015  * Description : Cette classe contient les fonctionnalités d'un buffer de trame.
00016  * Input
00017  * Output
00018  */
00019  
00020  #include "Buffer_Trame.h"
00021  
00022  /* CONSRTRUCTEUR(S) */
00023  C_FrameBuffer::C_FrameBuffer()
00024  {
00025     m_frameBuffer = new frame[default_size];
00026     m_maxSize = default_size;
00027     m_currentReadIndex = 0;
00028     m_currentWriteIndex = 0;
00029     m_numberMessage = 0;
00030  }
00031  
00032  C_FrameBuffer::C_FrameBuffer(unsigned int size)
00033  {
00034     m_maxSize = size;
00035     m_frameBuffer = new frame[m_maxSize];
00036     m_currentReadIndex = 0;
00037     m_currentWriteIndex = 0;
00038     m_numberMessage = 0;
00039  }
00040  
00041  /* DESTRUCTEUR */
00042  C_FrameBuffer::~C_FrameBuffer()
00043  {
00044     delete [] m_frameBuffer;
00045     m_maxSize = 0;
00046     m_currentReadIndex = 0;
00047     m_currentWriteIndex = 0;
00048     m_numberMessage = 0;
00049  }
00050  
00051  /* Propriétés */
00052  void C_FrameBuffer::frameBuffer(frame newFrame)
00053  {
00054     m_frameBuffer[m_currentWriteIndex] = newFrame;
00055     m_currentWriteIndex++;
00056     m_numberMessage++;
00057     
00058     if(m_currentWriteIndex >= m_maxSize) m_currentWriteIndex = 0;
00059  }
00060  
00061  frame C_FrameBuffer::frameBuffer(void)
00062  {
00063     frame newFrame = m_frameBuffer[m_currentReadIndex];
00064     m_currentReadIndex++;
00065     m_numberMessage--;
00066     
00067     if(m_currentReadIndex >= m_maxSize) m_currentReadIndex = 0;
00068     
00069     return newFrame;
00070  }
00071 
00072  unsigned int C_FrameBuffer::maxSize(void)
00073  {
00074     return m_maxSize;
00075  }
00076  
00077  unsigned int C_FrameBuffer::currentReadIndex(void)
00078  {
00079     return m_currentReadIndex;
00080  }
00081  
00082  unsigned int C_FrameBuffer::currentWriteIndex(void)
00083  {
00084     return m_currentWriteIndex;
00085  }
00086  
00087  unsigned int C_FrameBuffer::numberMessage(void)
00088  {
00089     return m_numberMessage;
00090  }