lzvn_decode_base.h

/*
 * Copyright (c) 2015-2016, Apple Inc. All rights reserved.
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 * in the documentation and/or other materials provided with the distribution.
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/*
 * LZVN low-level decoder (v2)
 * Functions in the low-level API should switch to these at some point.
 * Apr 2014
 */

#ifndefLZVN_DECODE_BASE_H
#defineLZVN_DECODE_BASE_H

#include"lzfse_internal.h"

/*! @abstract Base decoder state. */
typedefstruct {
/* Decoder I/O */

/* Next byte to read in source buffer */
constunsigned char*src;
/* Next byte after source buffer */
constunsigned char*src_end;

/* Next byte to write in destination buffer (by decoder) */
unsigned char*dst;
/* Valid range for destination buffer is [dst_begin, dst_end - 1] */
unsigned char*dst_begin;
unsigned char*dst_end;
/* Next byte to read in destination buffer (modified by caller) */
unsigned char*dst_current;

/* Decoder state */

/*
 * Partially expanded match, or 0,0,0.
 * In that case, src points to the next literal to copy, or the next
 * op-code if L==0.
 */
size_tL, M, D;

/* Distance for last emitted match, or 0 */
lzvn_offsetd_prev;

/* Did we decode end-of-stream? */
intend_of_stream;

} lzvn_decoder_state;

/*! @abstract Decode source to destination.
 * Updates \p state (src,dst,d_prev).
 */
voidlzvn_decode(lzvn_decoder_state*state);

#endif/* LZVN_DECODE_BASE_H */