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/* 
*********************************************************************** 
* COPYRIGHT AND WARRANTY INFORMATION 
* 
* Copyright 2001, International Telecommunications Union, Geneva 
* 
* DISCLAIMER OF WARRANTY 
* 
* These software programs are available to the user without any 
* license fee or royalty on an "as is" basis. The ITU disclaims 
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* statutory, including any implied warranties of merchantability 
* or of fitness for a particular purpose.  In no event shall the 
* contributor or the ITU be liable for any incidental, punitive, or 
* consequential damages of any kind whatsoever arising from the 
* use of these programs. 
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* This disclaimer of warranty extends to the user of these programs 
* and user's customers, employees, agents, transferees, successors, 
* and assigns. 
* 
* The ITU does not represent or warrant that the programs furnished 
* hereunder are free of infringement of any third-party patents. 
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* shareware, may be subject to royalty fees to patent holders. 
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/*! 
 ************************************************************************ 
 * \file  nalucommon.c 
 * 
 * \brief 
 *    Common NALU support functions 
 * 
 * \author 
 *    Main contributors (see contributors.h for copyright, address and affiliation details) 
 *    - Stephan Wenger    
 ************************************************************************ 
 */ 
 
#include  
#include  
#include  
#include "memory.h" 
 
#include "nalu.h" 
#include "memalloc.h" 
 
 
/*!  
 ************************************************************************************* 
 * \brief 
 *    Allocates memory for a NALU 
 * 
 * \param buffersize 
 *     size of NALU buffer  
 * 
 * \return 
 *    pointer to a NALU 
 ************************************************************************************* 
 */ 
  
 
NALU_t *AllocNALU(int buffersize) 
{ 
  NALU_t *n; 
 
  if ((n = calloc (1, sizeof (NALU_t))) == NULL) no_mem_exit ("AllocNALU: n"); 
 
  n->max_size=buffersize; 
 
  if ((n->buf = calloc (buffersize, sizeof (NALU_t))) == NULL) no_mem_exit ("AllocNALU: n->buf"); 
   
  return n; 
} 
 
 
/*!  
 ************************************************************************************* 
 * \brief 
 *    Frees a NALU 
 * 
 * \param n  
 *    NALU to be freed 
 * 
 ************************************************************************************* 
 */ 
 
void FreeNALU(NALU_t *n) 
{ 
  if (n) 
  { 
    if (n->buf) 
    { 
      free(n->buf); 
      n->buf=NULL; 
    } 
    free (n); 
  } 
}