tranmat.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
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 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
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#include "tranmat.h"


MatrixBlockTransitionList::MatrixBlockTransitionList(int listSize) : 
   size(listSize),
   list(0)
{
   if (size)
      CreateList(size);
}

MatrixBlockTransitionList::~MatrixBlockTransitionList()
{
   DestroyList();
}

void MatrixBlockTransitionList::CreateList(int listSize)
{
   DestroyList();

   size = listSize;

   if (size)
      list = new MatrixBlockTransition[size];
        
   if (!list)
      size = 0;
}

void MatrixBlockTransitionList::DestroyList()
{
   if (list)
   {
      delete [] list;
      size = 0;
   }
}

MatrixBlockTransition* MatrixBlockTransitionList::GetListPtr(int index)
{
   return (list && index < size) ? &list[index] : 0;
}


MatrixTransitionData::MatrixTransitionData(int w, int h, int length) : 
   width(w),
   height(h),
   transitionLength(length),
   transitionList(0)
{
   if (length)
      CreateTransitionList(length);
}

MatrixTransitionData::~MatrixTransitionData()
{
   DetroyTransitionList();
}

void MatrixTransitionData::CreateTransitionList(int length)
{
   DetroyTransitionList();

   transitionLength = length;

   if (transitionLength)
      transitionList = new MatrixBlockTransitionList[transitionLength];

   if (!transitionList)
      transitionLength = 0;
        
}

void MatrixTransitionData::DetroyTransitionList()
{
   if (transitionList)
   {
      delete [] transitionList;
      transitionLength = 0;
   }
}

MatrixBlockTransitionList* MatrixTransitionData::GetTransactionListPtr(int index)
{
   return (transitionList && index < transitionLength) ? &transitionList[index] : 0;
}