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/* Copyright (c) 2003, Roger Dingledine
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file compress_zstd.h
* \brief Header for compress_zstd.c
**/
#ifndef TOR_COMPRESS_ZSTD_H
#define TOR_COMPRESS_ZSTD_H
int tor_zstd_method_supported(void);
const char *tor_zstd_get_version_str(void);
const char *tor_zstd_get_header_version_str(void);
int tor_zstd_can_use_static_apis(void);
/** Internal state for an incremental Zstandard compression/decompression. */
typedef struct tor_zstd_compress_state_t tor_zstd_compress_state_t;
tor_zstd_compress_state_t *
tor_zstd_compress_new(int compress,
compress_method_t method,
compression_level_t compression_level);
tor_compress_output_t
tor_zstd_compress_process(tor_zstd_compress_state_t *state,
char **out, size_t *out_len,
const char **in, size_t *in_len,
int finish);
void tor_zstd_compress_free_(tor_zstd_compress_state_t *state);
#define tor_zstd_compress_free(st) \
FREE_AND_NULL(tor_zstd_compress_state_t, \
tor_zstd_compress_free_, (st))
size_t tor_zstd_compress_state_size(const tor_zstd_compress_state_t *state);
size_t tor_zstd_get_total_allocation(void);
void tor_zstd_init(void);
void tor_zstd_warn_if_version_mismatched(void);
#ifdef TOR_UNIT_TESTS
void tor_zstd_set_static_apis_disabled_for_testing(int disabled);
#endif
#endif /* !defined(TOR_COMPRESS_ZSTD_H) */
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