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/* compression_utils_portable.h
*
* Copyright 2019 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the Chromium source repository LICENSE file.
*/
#ifndef THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_PORTABLE_H_
#define THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_PORTABLE_H_
#include <stdint.h>
/* TODO(cavalcantii): remove support for Chromium ever building with a system
* zlib.
*/
#if defined(USE_SYSTEM_ZLIB)
#include <zlib.h>
/* AOSP build requires relative paths. */
#else
#include "zlib.h"
#endif
namespace zlib_internal {
enum WrapperType {
ZLIB,
GZIP,
ZRAW,
};
uLongf GzipExpectedCompressedSize(uLongf input_size);
uint32_t GetGzipUncompressedSize(const Bytef* compressed_data, size_t length);
int GzipCompressHelper(Bytef* dest,
uLongf* dest_length,
const Bytef* source,
uLong source_length,
void* (*malloc_fn)(size_t),
void (*free_fn)(void*));
int CompressHelper(WrapperType wrapper_type,
Bytef* dest,
uLongf* dest_length,
const Bytef* source,
uLong source_length,
int compression_level,
void* (*malloc_fn)(size_t),
void (*free_fn)(void*));
int GzipUncompressHelper(Bytef* dest,
uLongf* dest_length,
const Bytef* source,
uLong source_length);
int UncompressHelper(WrapperType wrapper_type,
Bytef* dest,
uLongf* dest_length,
const Bytef* source,
uLong source_length);
} // namespace zlib_internal
#endif // THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_PORTABLE_H_
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