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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LZIP_H__
#define __LZIP_H__
/*
* LZIP decompressor
*
* Copyright (C) 2016-2020 Antonio Diaz Diaz.
*/
/* Return values (< 0 = Error) */
enum {
LZIP_OOM_INBUF = -1,
LZIP_HEADER1_EOF = -2,
LZIP_HEADER2_EOF = -3,
LZIP_BAD_MAGIC1 = -4,
LZIP_BAD_MAGIC2 = -5,
LZIP_BAD_VERSION = -6,
LZIP_BAD_DICT_SIZE = -7,
LZIP_OOM_OUTBUF = -8,
LZIP_WRITE_ERROR = -9,
LZIP_BAD_DATA = -10,
LZIP_DATA_EOF = -11,
LZIP_BAD_CRC = -12
};
int lzip_decompress(unsigned char *inbuf, long in_len,
long (*fill)(void*, unsigned long),
long (*flush)(void*, unsigned long),
unsigned char *outbuf, long out_size,
long *in_posp, long *out_posp);
/* inbuf - input buffer. If null or in_len <= 0, fill must be non-null
* in_len - len of pre-read data in inbuf if inbuf is non-null
* fill - if non-null, function to fill inbuf when empty
* flush - if non-null, function to write out outbuf when full
* outbuf - output buffer. If null or out_size <= 0, flush must be non-null
* out_size - size of outbuf if outbuf is non-null
* in_posp - if non-null, the number of bytes consumed will be returned here
* out_posp - if non-null, the number of bytes produced will be returned here
*
* fill will be called (repeatedly) to read data. in_len bytes will be read
* per call (or 16384 bytes per call if inbuf is null or in_len <= 0).
*
* If flush is null, outbuf must be large enough to buffer all the expected
* output. Else the flush function will be called to flush the output buffer
* at the appropriate time (stream dependent).
* If out_size > 0 but is not large enough to buffer all the expected output,
* it must be at least as large as the dictionary size of the data.
*
* inbuf and outbuf may overlap (in-place decompression).
*/
#endif
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