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/* Copyright 2013 Google Inc. All Rights Reserved.
Distributed under MIT license.
See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/
/**
* @file
* Common types used in decoder and encoder API.
*/
#ifndef BROTLI_COMMON_TYPES_H_
#define BROTLI_COMMON_TYPES_H_
#include <stddef.h> /* for size_t */
#if defined(_MSC_VER) && (_MSC_VER < 1600)
typedef __int8 int8_t;
typedef unsigned __int8 uint8_t;
typedef __int16 int16_t;
typedef unsigned __int16 uint16_t;
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
typedef __int64 int64_t;
#else
#include <stdint.h>
#endif /* defined(_MSC_VER) && (_MSC_VER < 1600) */
/**
* A portable @c bool replacement.
*
* ::BROTLI_BOOL is a "documentation" type: actually it is @c int, but in API it
* denotes a type, whose only values are ::BROTLI_TRUE and ::BROTLI_FALSE.
*
* ::BROTLI_BOOL values passed to Brotli should either be ::BROTLI_TRUE or
* ::BROTLI_FALSE, or be a result of ::TO_BROTLI_BOOL macros.
*
* ::BROTLI_BOOL values returned by Brotli should not be tested for equality
* with @c true, @c false, ::BROTLI_TRUE, ::BROTLI_FALSE, but rather should be
* evaluated, for example: @code{.cpp}
* if (SomeBrotliFunction(encoder, BROTLI_TRUE) &&
* !OtherBrotliFunction(decoder, BROTLI_FALSE)) {
* bool x = !!YetAnotherBrotliFunction(encoder, TO_BROLTI_BOOL(2 * 2 == 4));
* DoSomething(x);
* }
* @endcode
*/
#define BROTLI_BOOL int
/** Portable @c true replacement. */
#define BROTLI_TRUE 1
/** Portable @c false replacement. */
#define BROTLI_FALSE 0
/** @c bool to ::BROTLI_BOOL conversion macros. */
#define TO_BROTLI_BOOL(X) (!!(X) ? BROTLI_TRUE : BROTLI_FALSE)
#define BROTLI_MAKE_UINT64_T(high, low) ((((uint64_t)(high)) << 32) | low)
#define BROTLI_UINT32_MAX (~((uint32_t)0))
#define BROTLI_SIZE_MAX (~((size_t)0))
/**
* Allocating function pointer type.
*
* @param opaque custom memory manager handle provided by client
* @param size requested memory region size; can not be @c 0
* @returns @c 0 in the case of failure
* @returns a valid pointer to a memory region of at least @p size bytes
* long otherwise
*/
typedef void* (*brotli_alloc_func)(void* opaque, size_t size);
/**
* Deallocating function pointer type.
*
* This function @b SHOULD do nothing if @p address is @c 0.
*
* @param opaque custom memory manager handle provided by client
* @param address memory region pointer returned by ::brotli_alloc_func, or @c 0
*/
typedef void (*brotli_free_func)(void* opaque, void* address);
#endif /* BROTLI_COMMON_TYPES_H_ */
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