www.pudn.com > jm74.zip > parsetcommon.c

 
/*! 
 ************************************************************************************** 
 * \file 
 *    parset.c 
 * \brief 
 *    Picture and Sequence Parameter set generation and handling 
 *  \date 25 November 2002 
 * \author 
 *    Main contributors (see contributors.h for copyright, address and affiliation details)  
 *      - Stephan Wenger         
 * 
 ************************************************************************************** 
 */ 
#include  
#include  
#include  
 
#include "parsetcommon.h" 
#include "memalloc.h" 
/*!  
 ************************************************************************************* 
 * \brief 
 *    Allocates memory for a picture paramater set 
 * 
 * \return 
 *    pointer to a pps 
 ************************************************************************************* 
 */ 
  
pic_parameter_set_rbsp_t *AllocPPS () 
 { 
   pic_parameter_set_rbsp_t *p; 
 
   if ((p=calloc (sizeof (pic_parameter_set_rbsp_t), 1)) == NULL) 
     no_mem_exit ("AllocPPS: PPS"); 
   if ((p->slice_group_id = calloc (SIZEslice_group_id, 1)) == NULL) 
     no_mem_exit ("AllocPPS: slice_group_id"); 
   return p; 
 } 
 
  
/*!  
 ************************************************************************************* 
 * \brief 
 *    Allocates memory for am sequence paramater set 
 * 
 * \return 
 *    pointer to a sps 
 ************************************************************************************* 
 */ 
  
seq_parameter_set_rbsp_t *AllocSPS () 
 { 
   seq_parameter_set_rbsp_t *p; 
 
   if ((p=calloc (sizeof (seq_parameter_set_rbsp_t), 1)) == NULL) 
     no_mem_exit ("AllocSPS: SPS"); 
   return p; 
 } 
 
  
/*!  
 ************************************************************************************* 
 * \brief 
 *    Frees a picture parameter set 
 * 
 * \param pps to be freed 
 *   Picture parameter set to be freed 
 ************************************************************************************* 
 */ 
  
 void FreePPS (pic_parameter_set_rbsp_t *pps) 
 { 
   assert (pps != NULL); 
   if (pps->slice_group_id != NULL) free (pps->slice_group_id); 
   free (pps); 
 } 
 
  
 /*!  
 ************************************************************************************* 
 * \brief 
 *    Frees a sps 
 * 
 * \param sps 
 *   Sequence parameter set to be freed 
 ************************************************************************************* 
 */ 
  
 void FreeSPS (seq_parameter_set_rbsp_t *sps) 
 { 
   assert (sps != NULL); 
   free (sps);  
 }