asn1_createIngredient.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 "glue_debug.h"
#include "mh5base.h"
#include "mh5ingredient.h"
#include "asn1_createExtras.h"
#include "asn1_createIngredient.h"

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

#define MHEG5CP_DEFAULT 127


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

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

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

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

static asnErr asn1_decodeContentBody(fpa1_syntaxList *listPtr, MHEG5ContentBody *contBody)
{
   asnErr errVal = 0;
   fpa1_syntaxList *currItem;

   DPL5((">> asn1_decodeContentBody(%X,%X)\n", listPtr, contBody));
   assert(contBody);
   assert(listPtr);

   currItem = listPtr->children;
   assert(currItem);

   switch (currItem->tag)
   {
      case OCTETSTRING: /* Included */
         errVal |= asn1_decodeOctetString(currItem, &contBody->ref.included);
         contBody->referenced = MHEG5FALSE;
         break;

      case REFERENCED_CONTENT_TYPE: /* referenced content */
         currItem = currItem->children;
         /* default value */
         contBody->ref.referenced.priority = MHEG5CP_DEFAULT;
         while (currItem != NULL)
         {
            switch (currItem->tag)
            {
               case OCTETSTRING:
                  contBody->ref.referenced.reference.len = currItem->data.stringData.len;
                  contBody->ref.referenced.reference.data = currItem->data.stringData.data;
                  currItem->data.stringData.len = 0;
                  currItem->data.stringData.data = NULL;
                  break;
               case CONTSIZE: /* optional */
                  contBody->ref.referenced.size = currItem->data.intData;
                  break;
               case CONTPRIO: /* defaults to 127 */
                  contBody->ref.referenced.priority = currItem->data.intData;
                  break;
               default:
                  break;
            }
            currItem = currItem->next;
         }
         contBody->referenced = MHEG5TRUE;
         break;

      default:
         DPL2(("WARNING:[ASN.1] Unknown tag in contentBody\n"));
         errVal |= 0x01;
   }

#if (DPLEVEL >= 2)
   if (errVal != 0)
   {
      DPL2(("WARNING:[ASN.1] asn1_decodeContentBody() returns errVal = %d\n", errVal));
   }
#endif /* DPLEVEL >= 2 */

   DPL5(("<< asn1_decodeContentBody() Returns %d\n", errVal));
   return errVal;
}

asnErr asn1_decodeIngredient(fpa1_syntaxList *listPtr, MHEG5Ingredient *ingredient)
{
   asnErr errVal = 0;
   fpa1_syntaxList *currItem;

   DPL5((">> asn1_decodeIngredient(%X,%X)\n", listPtr, ingredient));

   assert(ingredient);
   assert(listPtr);

   currItem = listPtr->children;

   /* defaults */
   ingredient->shared = MHEG5FALSE;
   ingredient->originalContent.ref.referenced.priority = MHEG5CP_DEFAULT;
   ingredient->contentHook = MHEG5CHOOK_UNDEFINED;
   ingredient->cloned = MHEG5FALSE;

   /* searches current set of tags for local tags */
   while (currItem != NULL)
   {
      /* most objects will have more than one local tag */
      switch (currItem->tag)
      {
         /* decode objectReference here rather than calling a decodeRoot function */
         case EXTERNAL_REFERENCE_TYPE:
            /* Ignore the GID as MHEG5Root has no element to store it */
            /* Just get the object ID number */
            if (currItem->children->next == NULL)
            {
               errVal |= 0x01;
            }
            else
            {
               ingredient->root.id = currItem->children->next->data.intData;
            }
            break;
         case INTEGER: /* internal reference */
            ingredient->root.id = currItem->data.intData;
            break;

         case INITACTIVE:
            if (currItem->data.boolData == 0)
            {
               ingredient->initiallyStopped = MHEG5TRUE;
            }
            break;
         case CHOOK:
            ingredient->contentHook = currItem->data.intData;
            break;
         case OCONTENT:
            errVal |= asn1_decodeContentBody(currItem, &ingredient->originalContent);
            break;
         case SHARED:
            if (currItem->data.boolData != 0)
            {
               ingredient->shared = MHEG5TRUE;
            }
            break;

         default:
            break;
      }
      currItem = currItem->next;
   }
   if (ingredient->root.id < 1)
   {
      /* illegal to have zero or negative object numbers for an ingredient */
      errVal |= 0x01;
   }

#if (DPLEVEL >= 2)
   if (errVal != 0)
   {
      DPL2(("WARNING:[ASN.1] asn1_decodeIngredient() returns errVal = %d\n", errVal));
   }
#endif /* DPLEVEL >= 2 */

   DPL5(("<< asn1_decodeIngredient() Returns %d\n", errVal));

   return errVal;
}