/* * %CopyrightBegin% * * Copyright Ericsson AB 2009-2016. 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);