asn1_createStream.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 "mh5stream.h"
#include "mh5final.h"
#include "mh5audio.h"
#include "mh5video.h"
#include "mh5rtgraphics.h"
#include "mh5application.h"
#include "asn1_createExtras.h"
#include "asn1_createIngredient.h"
#include "asn1_createAudio.h"
#include "asn1_createVideo.h"
#include "asn1_createRTGraphics.h"
#include "asn1_createApplication.h"
#include "asn1_createGroup.h"
#include "asn1_createStream.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---------------------------------------------*/

static asnErr asn1_decodeMultiplex(fpa1_syntaxList *listPtr, MHEG5Stream *stream)
{
   asnErr errVal = 0;
   fpa1_syntaxList *currItem;
   MHEG5Ingredient *ingred = NULL;
   int cnt = 0;

   DPL5((">> asn1_decodeMultiplex(%X,%X)\n", listPtr, stream));

   assert( listPtr );

   currItem = listPtr->children;

   while ((currItem != NULL) && (cnt != MAX_MLTPLX))
   {
      switch (currItem->tag)
      {
         case AUDIO: ingred = asn1_createAudio( currItem, stream ); break;
         case VIDEO: ingred = asn1_createVideo( currItem, stream ); break;
      #ifndef ASN1UKPROFILE
         /* Not UK1 Profile */
         case RTGRAPHICS: ingred = asn1_createRTGraphics( currItem, stream ); break;
      #endif /* ASN1UKPROFILE */
         default: /* something wrong with the incomming script */
            DPL2(("WARNING:[ASN.1] unexpected tag in Stream->multiplex\n"));
            ingred = NULL;
            break;
      }
      if (ingred)
      {
         stream->multiplex[cnt++] = ingred;
         /* if stream is shared, so is the components */
         if (stream->ingredient.shared)
         {
            ingred->shared = MHEG5TRUE;
         }
         MHEG5groupAddItem( stream->ingredient.root.grp, ingred );
      }
      currItem = currItem->next;
   }


   DPL5(("<< asn1_decodeMultiplex() Returns %d\n", errVal));

   return errVal;
}

MHEG5Ingredient* asn1_createStream( MHEG5Group *group, fpa1_syntaxList *listPtr )
{
   MHEG5Stream *stream;

   asnErr errVal = 0;
   fpa1_syntaxList *currItem;

   DPL5((">> asn1_createStream(%X)\n", listPtr));

   assert(listPtr);

   stream = (MHEG5Stream *)MHEG5getMem( sizeof(MHEG5Stream));
   if (stream)
   {
      /* defaults */
      memset(stream, 0, sizeof(MHEG5Stream));
      stream->ingredient.root.clazz = MHEG5STREAM;

      /* decode inherited tags */
      errVal = asn1_decodeIngredient(listPtr, &stream->ingredient);
      if (errVal == ASN_NO_ERROR)
      {
         /* stream->storageMemory = MHEG5FALSE; */
         stream->looping = 1;

         MHEG5groupAddItem( group, &stream->ingredient );

         /* searches current set of tags for local tags */
         currItem = listPtr->children;
         while (currItem != NULL)
         {
            /* most objects will have more than one local tag */
            switch (currItem->tag)
            {
               case MULTIPLEX:
                  errVal |= asn1_decodeMultiplex(currItem, stream);
                  break;
               case STORAGE:
                  if (currItem->data.intData == 1)
                  {
                     stream->storageMemory = MHEG5TRUE; /* Memory */
                  }
                  /* leave the default MHEG5FALSE (Storage)*/
                  break;
               case LOOPING:
                  stream->looping = currItem->data.intData;
                  break;

               default:
                  break;
            }
            currItem = currItem->next;
         }
      }
      else
      {
         #if (DPLEVEL >= 2)
         DPL2(("WARNING:[ASN.1] asn1_createStream() returns errVal = %d\n", errVal));
         #endif /* DPLEVEL >= 2 */
         MHEG5freeMem( stream );
         stream = NULL;
      }
   }

   DPL5(("<< asn1_createStream() %d\n", stream));
   return (MHEG5Ingredient *)stream;
}