/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2009-2013. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/* A sparse wrapper interface around zlib with erts memory allocation.
*/
#include <zlib.h>
/* Initialize zalloc, zfree and opaque of a z_stream
*/
#define erl_zlib_alloc_init(s) \
do { /* 'opaque' not used */ \
(s)->zalloc = erl_zlib_zalloc_callback; \
(s)->zfree = erl_zlib_zfree_callback; \
} while (0)
/*
* Chunked interface, used by term_to_binary among others.
*/
int ZEXPORT erl_zlib_deflate_start(z_stream *streamp, const Bytef* source,
uLong sourceLen, int level);
int ZEXPORT erl_zlib_deflate_chunk(z_stream *streamp, Bytef* dest, uLongf* destLen);
int ZEXPORT erl_zlib_deflate_finish(z_stream *streamp);
int ZEXPORT erl_zlib_inflate_start(z_stream *streamp, const Bytef* source,
uLong sourceLen);
int ZEXPORT erl_zlib_inflate_chunk(z_stream *streamp, Bytef* dest, uLongf* destLen);
int ZEXPORT erl_zlib_inflate_finish(z_stream *streamp);
/* Use instead of compress
*/
#define erl_zlib_compress(dest,destLen,source,sourceLen) \
erl_zlib_compress2(dest,destLen,source,sourceLen,Z_DEFAULT_COMPRESSION)
/* Use instead of compress2
*/
int ZEXPORT erl_zlib_compress2 (Bytef* dest, uLongf* destLen,
const Bytef* source, uLong sourceLen,
int level);
/* Use instead of uncompress
*/
int ZEXPORT erl_zlib_uncompress (Bytef* dest, uLongf* destLen,
const Bytef* source, uLong sourceLen);
voidpf erl_zlib_zalloc_callback (voidpf,unsigned,unsigned);
void erl_zlib_zfree_callback (voidpf,voidpf);
