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#ifndef _LINUX_SNAPPY_H
#define _LINUX_SNAPPY_H 1
#include <stdbool.h>
#include <stddef.h>
/* Only needed for compression. This preallocates the worst case */
struct snappy_env {
unsigned short *hash_table;
void *scratch;
void *scratch_output;
};
struct iovec;
int snappy_init_env(struct snappy_env *env);
int snappy_init_env_sg(struct snappy_env *env, bool sg);
void snappy_free_env(struct snappy_env *env);
int snappy_uncompress_iov(struct iovec *iov_in, int iov_in_len,
size_t input_len, char *uncompressed);
int snappy_uncompress(const char *compressed, size_t n, char *uncompressed);
int snappy_compress(struct snappy_env *env,
const char *input,
size_t input_length,
char *compressed,
size_t *compressed_length);
int snappy_compress_iov(struct snappy_env *env,
struct iovec *iov_in,
int iov_in_len,
size_t input_length,
struct iovec *iov_out,
int *iov_out_len,
size_t *compressed_length);
bool snappy_uncompressed_length(const char *buf, size_t len, size_t *result);
size_t snappy_max_compressed_length(size_t source_len);
#endif
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