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/*
* librdkafka - Apache Kafka C library
*
* Copyright (c) 2018 Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#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 rd_kafka_snappy_init_env(struct snappy_env *env);
int rd_kafka_snappy_init_env_sg(struct snappy_env *env, bool sg);
void rd_kafka_snappy_free_env(struct snappy_env *env);
int rd_kafka_snappy_uncompress_iov(struct iovec *iov_in, int iov_in_len,
size_t input_len, char *uncompressed);
int rd_kafka_snappy_uncompress(const char *compressed, size_t n, char *uncompressed);
char *rd_kafka_snappy_java_uncompress (const char *inbuf, size_t inlen,
size_t *outlenp,
char *errstr, size_t errstr_size);
int rd_kafka_snappy_compress_iov(struct snappy_env *env,
const struct iovec *iov_in, size_t iov_in_cnt,
size_t input_length,
struct iovec *iov_out);
bool rd_kafka_snappy_uncompressed_length(const char *buf, size_t len, size_t *result);
size_t rd_kafka_snappy_max_compressed_length(size_t source_len);
#endif
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