asn1_createProgram.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 "vpa1_sys.h"
#include "vpa1_tgs.h"
#include "fpa1_syn.h"
#include "asn1_sys.h"

#include "mh5base.h"
#include "mh5program.h"
#include "asn1_createExtras.h"
#include "asn1_createIngredient.h"
#include "asn1_createProgram.h"

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


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

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

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

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

MHEG5Ingredient* asn1_createProgram(fpa1_syntaxList *listPtr, MHEG5Final clazz )
{
   MHEG5Program *program;
   fpa1_syntaxList *child;
   asnErr errVal = ASN_NO_ERROR;

   DPL5((">> asn1_createProgram(%X,%d)\n", listPtr, clazz));

   assert(listPtr);

   program = (MHEG5Program *)MHEG5getMem( sizeof(MHEG5Program));
   if (program)
   {
      /* program defaults */
      memset(program, 0, sizeof(MHEG5Program));
      program->initiallyAvailable = MHEG5TRUE;
      program->ingredient.root.clazz = clazz;

      /* searches current set of tags for local tags */
      listPtr = listPtr->children;
      while (listPtr != NULL)
      {
         /* most objects will have more than one local tag */
         switch (listPtr->tag)
         {
            case NAME:
               errVal |= asn1_decodeOctetString(listPtr, &program->name);
               break;
            case INITAVAIL:
               if (listPtr->data.boolData == 0)
               {
                  program->initiallyAvailable = MHEG5FALSE;
               }
               break;

            /**** decode inherited tags from Ingredient *****/
            case EXTERNAL_REFERENCE_TYPE:
               /* skip the Group ref 'child', as this must always reference current group */
               assert( listPtr->children );
               child = listPtr->children->next;
               if (child == NULL ||
                   child->data.intData < 1)
               {
                  /* illegal to have zero or negative object numbers for an ingredient */
                  errVal |= 0x01;
               }
               else
               {
                  program->ingredient.root.id = child->data.intData;
               }
               break;
            case INTEGER: /* internal reference */
               if (listPtr->data.intData < 1)
               {
                  /* illegal to have zero or negative object numbers for an ingredient */
                  errVal |= 0x01;
               }
               else
               {
                  program->ingredient.root.id = listPtr->data.intData;
               }
               break;
            case SHARED:
               if (listPtr->data.boolData != 0)
               {
                  program->ingredient.shared = MHEG5TRUE;
               }
               break;

            default:
               break;
         }
         listPtr = listPtr->next;
      }

      /* Receiver defensive response - initialise InitiallyActive to false in case
       * it is not encoded in the script (it should be according to section 14.1.1
       * of ISC/IEC13522-5
       */
      /* Override the default value in the ingredient. Disabled is always 'True' in Program. */
      program->ingredient.initiallyStopped = MHEG5TRUE;

      if (errVal != ASN_NO_ERROR)
      {
         #if (DPLEVEL >= 2)
         DPL2(("WARNING:[ASN.1] asn1_createProgram() Fails\n"));
         #endif /* DPLEVEL >= 2 */
         MHEG5freeMem(program);
         program = NULL;
      }
   }


   DPL5(("<< asn1_createProgram() %X\n", program));

   return (MHEG5Ingredient *)program;
}