fpa1_var.c

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/*******************************************************************************
 * Copyright © 2014 The DTVKit Open Software Foundation Ltd (www.dtvkit.org)
 * Copyright © 2004 Ocean Blue Software Ltd
 * Copyright © 2000 Koninklijke Philips Electronics N.V
 *
 * This file is part of a DTVKit Software Component
 * You are permitted to copy, modify or distribute this file subject to the terms
 * of the DTVKit 1.0 Licence which can be found in licence.txt or at www.dtvkit.org
 * 
 * THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
 * EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * If you or your organisation is not a member of DTVKit then you have access
 * to this source code outside of the terms of the licence agreement
 * and you are expected to delete this and any associated files immediately.
 * Further information on DTVKit, membership and terms can be found at www.dtvkit.org
 *******************************************************************************/
/*---includes for this file--------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>

#include "vpa1_tgs.h"
#include "vpa1_rdf.h"

#include "fpa1_cho.h"
#include "fpa1_set.h"
#include "fpa1_syn.h"
#include "fpa1_var.h"
#include "fpa1_BlockAlloc.h"

/*---local typedef structs for this file-------------------------------------*/

/*---constant definitions for this file--------------------------------------*/
#define VAR_SET_COMPS        4
#define ORI_VAR_CHOICE_COMPS 5


/*---local (static) variable declarations for this file----------------------*/

int varSetCompsArr[ 2 * VAR_SET_COMPS + 1 ]
   = { 2 * VAR_SET_COMPS,  /* array limit */
       /* Ingredient */
       OBJECT_REFERENCE_TYPE, SYN_NEEDED,
       INITACTIVE, SYN_DEFAULT,
       SHARED, SYN_DEFAULT,
       /* Variable */
       OVALUE, SYN_NEEDED };

int oriVarChoiceCompArr[ ORI_VAR_CHOICE_COMPS + 1 ]
   = { ORI_VAR_CHOICE_COMPS + 1,
       MHEG_BOOL,
       INTEGER,
       OCTETSTRING,
       OBJREF,
       CONTREF };

/*---local function definitions----------------------------------------------*/

/*---global function definitions---------------------------------------------*/

fpa1_syntaxList* fpa1_decodeVariable( vpa1_filePos filePosLimit, int childTag )
{
   fpa1_syntaxList *itemPtr;
   fpa1_syntaxList *varListPtr;

   varListPtr = fpa1_setParse( varSetCompsArr, filePosLimit );

   itemPtr = varListPtr;

   while (itemPtr != NULL)
   {
      if (itemPtr->tag == OVALUE)
      {
         if (itemPtr->children->tag != childTag)
         {
            /* Free up memory */
            fpa1_delList( varListPtr );
            varListPtr = NULL;
         }
         break;
      }

      itemPtr = itemPtr->next;
   }

   return varListPtr;
}