mirror of
https://github.com/webmproject/libwebp.git
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8487860a8c
With older toolchains, at the least, visibility attributes don't work and all symbols are exported along with lots of unsupported warnings. Change-Id: I6ffe220b7589a6bda00f42c17ead35592de7cc5a
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
// Copyright 2010 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Common types + memory wrappers
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//
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// Author: Skal (pascal.massimino@gmail.com)
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#ifndef WEBP_WEBP_TYPES_H_
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#define WEBP_WEBP_TYPES_H_
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#include <stddef.h> // for size_t
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#ifndef _MSC_VER
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#include <inttypes.h>
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#if defined(__cplusplus) || !defined(__STRICT_ANSI__) || \
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(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
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#define WEBP_INLINE inline
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#else
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#define WEBP_INLINE
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#endif
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#else
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typedef signed char int8_t;
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typedef unsigned char uint8_t;
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typedef signed short int16_t;
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typedef unsigned short uint16_t;
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typedef signed int int32_t;
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typedef unsigned int uint32_t;
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typedef unsigned long long int uint64_t;
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typedef long long int int64_t;
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#define WEBP_INLINE __forceinline
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#endif /* _MSC_VER */
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#if defined(WEBP_ENABLE_NODISCARD) || \
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(defined(__cplusplus) && __cplusplus >= 201700L) || \
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(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L)
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#define WEBP_NODISCARD [[nodiscard]]
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#else
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// gcc's __has_attribute does not work for enums.
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#if defined(__clang__) && defined(__has_attribute)
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#if __has_attribute(warn_unused_result)
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#define WEBP_NODISCARD __attribute__((warn_unused_result))
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#else
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#define WEBP_NODISCARD
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#endif
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#else
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#define WEBP_NODISCARD
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#endif
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#endif
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#ifndef WEBP_EXTERN
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// This explicitly marks library functions and allows for changing the
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// signature for e.g., Windows DLL builds.
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# if defined(_WIN32) && defined(WEBP_DLL)
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# define WEBP_EXTERN __declspec(dllexport)
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# elif defined(__GNUC__) && __GNUC__ >= 4
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# define WEBP_EXTERN extern __attribute__ ((visibility ("default")))
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# else
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# define WEBP_EXTERN extern
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# endif /* defined(_WIN32) && defined(WEBP_DLL) */
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#endif /* WEBP_EXTERN */
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// Macro to check ABI compatibility (same major revision number)
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#define WEBP_ABI_IS_INCOMPATIBLE(a, b) (((a) >> 8) != ((b) >> 8))
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Allocates 'size' bytes of memory. Returns NULL upon error. Memory
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// must be deallocated by calling WebPFree(). This function is made available
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// by the core 'libwebp' library.
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WEBP_NODISCARD WEBP_EXTERN void* WebPMalloc(size_t size);
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// Releases memory returned by the WebPDecode*() functions (from decode.h).
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WEBP_EXTERN void WebPFree(void* ptr);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // WEBP_WEBP_TYPES_H_
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