/*****************************************************************************
 * Copyright (C) 2004-2021
 * ProbeStar Technical Systems, LLC
 * All Rights Reserved.  Proprietary and Confidential.
 *============================================================================
*****************************************************************************/

/*****************************************************************************
 * includes
*****************************************************************************/

#include <stdlib.h>

#include "embtypes.h"
#include "asn1uper.h"

/*****************************************************************************
 * defines
*****************************************************************************/

/*****************************************************************************
 * macros
*****************************************************************************/

/*****************************************************************************
 * structs & typedefs
*****************************************************************************/

/*****************************************************************************
 * global constants
*****************************************************************************/

/*****************************************************************************
 * global variables
*****************************************************************************/

/*****************************************************************************
 * static constants
*****************************************************************************/

/*****************************************************************************
 * static variables
*****************************************************************************/

/*****************************************************************************
 * static prototypes
*****************************************************************************/

/*****************************************************************************
 * C functions
*****************************************************************************/

void uper_init_stream(UPER_Stream *strm, uint8_t *ptr, uint max)
{
  if (strm && ptr && max) {
    strm->buf = ptr;
    strm->ptr = ptr;
    strm->align = ASN1_UPER_ALIGNED;
    strm->bit = 0;
    strm->max = max;
    strm->consumed = 0;
    strm->error = 0;
  }
}

UPER_Stream *uper_alloc_stream(uint8_t *ptr, uint max)
{
  UPER_Stream *uper = (UPER_Stream*)calloc(1, sizeof(UPER_Stream));
  
  if (uper) {
    if (!ptr && max) {
      ptr = (uint8_t*)calloc(max/8+1,1);
      uper->alloc = 1;
    }
    uper_init_stream(uper, ptr, max);
  }
  
  return uper;
}

void uper_free_stream(UPER_Stream *uper)
{
  if (uper) {
    if (uper->buf && uper->alloc)
      free(uper->buf);
    free(uper);
  }
}