| 1 | // Copyright 2010 Google Inc. All Rights Reserved. |
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| 2 | // |
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| 3 | // Use of this source code is governed by a BSD-style license |
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| 4 | // that can be found in the COPYING file in the root of the source |
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| 5 | // tree. An additional intellectual property rights grant can be found |
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| 6 | // in the file PATENTS. All contributing project authors may |
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| 7 | // be found in the AUTHORS file in the root of the source tree. |
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| 8 | // ----------------------------------------------------------------------------- |
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| 9 | // |
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| 10 | // Common types + memory wrappers |
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| 11 | // |
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| 12 | // Author: Skal (pascal.massimino@gmail.com) |
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| 13 | |
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| 14 | #ifndef WEBP_WEBP_TYPES_H_ |
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| 15 | #define WEBP_WEBP_TYPES_H_ |
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| 16 | |
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| 17 | #include <stddef.h> // for size_t |
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| 18 | |
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| 19 | #ifndef _MSC_VER |
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| 20 | #include <inttypes.h> |
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| 21 | #if defined(__cplusplus) || !defined(__STRICT_ANSI__) || \ |
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| 22 | (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) |
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| 23 | #define WEBP_INLINE inline |
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| 24 | #else |
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| 25 | #define WEBP_INLINE |
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| 26 | #endif |
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| 27 | #else |
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| 28 | typedef signed char int8_t; |
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| 29 | typedef unsigned char uint8_t; |
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| 30 | typedef signed short int16_t; |
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| 31 | typedef unsigned short uint16_t; |
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| 32 | typedef signed int int32_t; |
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| 33 | typedef unsigned int uint32_t; |
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| 34 | typedef unsigned long long int uint64_t; |
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| 35 | typedef long long int int64_t; |
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| 36 | #define WEBP_INLINE __forceinline |
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| 37 | #endif /* _MSC_VER */ |
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| 38 | |
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| 39 | #ifndef WEBP_NODISCARD |
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| 40 | #if defined(WEBP_ENABLE_NODISCARD) && WEBP_ENABLE_NODISCARD |
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| 41 | #if (defined(__cplusplus) && __cplusplus >= 201700L) || \ |
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| 42 | (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L) |
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| 43 | #define WEBP_NODISCARD [[nodiscard]] |
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| 44 | #else |
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| 45 | // gcc's __has_attribute does not work for enums. |
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| 46 | #if defined(__clang__) && defined(__has_attribute) |
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| 47 | #if __has_attribute(warn_unused_result) |
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| 48 | #define WEBP_NODISCARD __attribute__((warn_unused_result)) |
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| 49 | #else |
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| 50 | #define WEBP_NODISCARD |
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| 51 | #endif /* __has_attribute(warn_unused_result) */ |
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| 52 | #else |
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| 53 | #define WEBP_NODISCARD |
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| 54 | #endif /* defined(__clang__) && defined(__has_attribute) */ |
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| 55 | #endif /* (defined(__cplusplus) && __cplusplus >= 201700L) || |
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| 56 | (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L) */ |
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| 57 | #else |
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| 58 | #define WEBP_NODISCARD |
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| 59 | #endif /* defined(WEBP_ENABLE_NODISCARD) && WEBP_ENABLE_NODISCARD */ |
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| 60 | #endif /* WEBP_NODISCARD */ |
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| 61 | |
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| 62 | #ifndef WEBP_EXTERN |
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| 63 | // This explicitly marks library functions and allows for changing the |
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| 64 | // signature for e.g., Windows DLL builds. |
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| 65 | # if defined(_WIN32) && defined(WEBP_DLL) |
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| 66 | # define WEBP_EXTERN __declspec(dllexport) |
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| 67 | # elif defined(__GNUC__) && __GNUC__ >= 4 |
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| 68 | # define WEBP_EXTERN extern __attribute__ ((visibility ("default"))) |
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| 69 | # else |
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| 70 | # define WEBP_EXTERN extern |
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| 71 | # endif /* defined(_WIN32) && defined(WEBP_DLL) */ |
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| 72 | #endif /* WEBP_EXTERN */ |
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| 73 | |
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| 74 | // Macro to check ABI compatibility (same major revision number) |
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| 75 | #define WEBP_ABI_IS_INCOMPATIBLE(a, b) (((a) >> 8) != ((b) >> 8)) |
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| 76 | |
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| 77 | #ifdef __cplusplus |
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| 78 | extern "C" { |
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| 79 | #endif |
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| 80 | |
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| 81 | // Allocates 'size' bytes of memory. Returns NULL upon error. Memory |
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| 82 | // must be deallocated by calling WebPFree(). This function is made available |
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| 83 | // by the core 'libwebp' library. |
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| 84 | WEBP_NODISCARD WEBP_EXTERN void* WebPMalloc(size_t size); |
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| 85 | |
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| 86 | // Releases memory returned by the WebPDecode*() functions (from decode.h). |
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| 87 | WEBP_EXTERN void WebPFree(void* ptr); |
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| 88 | |
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| 89 | #ifdef __cplusplus |
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| 90 | } // extern "C" |
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| 91 | #endif |
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| 92 | |
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| 93 | #endif // WEBP_WEBP_TYPES_H_ |
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| 94 | |
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