#ifndef __ASN1COMMON_INCLUDE__
#define __ASN1COMMON_INCLUDE__

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

#include <stdio.h>
#include <stdint.h>
#include <sys/types.h>
#include <memory.h>

#include "embtypes.h"

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

#define ASN1_UPER_ALIGNED 0
#define ASN1_APER_ALIGNED 1
#define ASN1_OER_ALIGNED 2

#define asn1_get_error(S) ((S)->error)

#define asn1_get_bits_consumed(O) ((O)->consumed)
#define asn1_get_bytes_consumed(O) ((O)->consumed?(((O)->consumed-1)/8+1):0)

#define asn1_init_extension(E)  memset((E),0,sizeof(ASN1_Extension))
#define asn1_init_bitstream(E)  memset((E),0,sizeof(ASN1_BitStream))

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

typedef struct _asn1_stream {
  uint8_t  *buf;    // pointer to first byte
  uint8_t  *ptr;    // pointer to current byte
  uint8_t  alloc;   // set if alloc'd
  uint8_t  align;   // alignment
  uint8_t  error;   // set if error
  uint16_t bit;     // current bit in byte
  uint16_t max;     // maximum bits
  uint16_t consumed;// bits consumed
} ASN1_Stream;

typedef struct _asn1_bitstream {
  uint64_t value;   // value
  uint16_t max;     // maximum bits
} ASN1_BitStream;

typedef struct _asn1_extension {
  uint64_t value;       // extension+option bits
  uint8_t  ellipses;    // 0 or 1
  uint8_t  options;     // # options
  uint16_t length;      // length of extension
} ASN1_Extension;

/******************************************************************************
 * function prototypes
 *****************************************************************************/
/* export C functions to C++ */
#ifdef __cplusplus
extern "C" {
#endif

void asn1_set_debug(uint8_t flag);
extern uint8_t _asn1_debug_on_;


#ifdef __cplusplus
}
#endif
/******************************************************************************
 * Macros
 * ***************************************************************************/

#endif