fpa1_cho.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_sys.h"
#include "vpa1_tgs.h"
#include "vpa1_rdf.h"

#include "fpa1_app.h"
#include "fpa1_cho.h"
#include "fpa1_col.h"
#include "fpa1_ing.h"
#include "fpa1_lnk.h"
#include "fpa1_obj.h"
#include "fpa1_rdf.h"
#include "fpa1_seq.h"
#include "fpa1_syn.h"
#include "fpa1_tgs.h"
#include "fpa1_typ.h"
#include "fpa1_var.h"

#include "fpa1_BlockAlloc.h"

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

/*---constant definitions for this file--------------------------------------*/


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

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

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

/* for a CHOICE is filePosLimit needed? - only one selection is necessary! */
fpa1_syntaxList* fpa1_choiceParse( int *choiceArr )
{
   int tag = 0xffff, count = 1;
   fpa1_syntaxList *knownPtr = NULL;
   vpa1_filePos nextTagPosition,
                curFilePosition = fpa1_rdfGetCurrentFilePosition();

   while ((count != choiceArr[0]) && (knownPtr == NULL))
   {
      /* get component array for item */
      if (choiceArr[count] > MHEG5_TYPE)
      {
         knownPtr = fpa1_typeParse( choiceArr[count], fpa1_rdfGetNextTagPosn());
      }
      else
      {
         tag = fpa1_rdfGetTag();

         if (tag == choiceArr[count])
         {
            /* found a match create an item */
            nextTagPosition = fpa1_rdfGetNextTagPosn();

            knownPtr = fpa1_synCreateListItem( tag, curFilePosition, nextTagPosition );

            /* test tag syntax */
            if (fpa1_tagsParse( knownPtr ) == FALSE)
            {
               /* a failure of some sort - delete item */
               fpa1_delList( knownPtr );
               knownPtr = NULL;
            }
         }
      }

      if (knownPtr == NULL)
      {
         /* re-establish file position */
         fpa1_rdfSetNewFilePosition( curFilePosition );
      }

      count++;
   }

   return knownPtr;
}