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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/
/*
WARNING: This file was generated by the dkct program (see
http://dktools.sourceforge.net/ for details).
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk4c32.ctr
*/
#ifndef DK4C32_H_INCLUDED
/** Avoid multiple inclusions. */
#define DK4C32_H_INCLUDED 1
#line 10 "dk4c32.ctr"
/** @file
32 bit character decoding.
CRT on Windows: Not used.
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4TYPES_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4types.h"
#else
#include <dktools-4/dk4types.h>
#endif
#endif
/** Decoder structure to build a 32 bit character from 4 4 4 4 bytes.
*/
typedef struct {
dk4_c32_t val; /**< Value constructed from the bytes. */
int msb; /**< Flag: First byte is MSB. */
int nb; /**< Number of next byte. */
} dk4_c32_byte_decoder_t;
#ifdef __cplusplus
extern "C" {
#endif
/** Initialize the decoder.
@param ptr Decoder to initialize.
@param msb Flag: Most significant byte first.
*/
void
dk4c32_decoder_init(dk4_c32_byte_decoder_t *ptr, int msb);
/** Add one byte to the decoder.
@param ptr
@param inbyte
@return DK4_EDSTM_ACCEPT if the byte was added to the internal
decoder state (no action necessary) or
DK4_EDSTM_FINISHED if one output was finished (use
dk4c32_decoder_get() to obtain the value).
*/
int
dk4c32_decoder_add(dk4_c32_byte_decoder_t *ptr, unsigned char inbyte);
/** Retrieve output value.
@param ptr Decoder to retrieve value from.
@return Output produced by the decoder.
*/
dk4_c32_t
dk4c32_decoder_get(dk4_c32_byte_decoder_t const *ptr);
/** Check whether the decoder is empty (nothing is stored in the
internal state).
@param ptr Decoder to check.
@return 1 on success (decoder empty), 0 otherwise.
*/
int
dk4c32_decoder_is_empty(dk4_c32_byte_decoder_t const *ptr);
#ifdef __cplusplus
}
#endif
#endif
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