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Editing: types.h
/* 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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