67 lines
2 KiB
C
67 lines
2 KiB
C
/*
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* Copyright 2016 The WebRTC Project Authors. 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 LICENSE 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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#ifndef SDK_OBJC_BASE_RTCMACROS_H_
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#define SDK_OBJC_BASE_RTCMACROS_H_
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#ifdef WEBRTC_ENABLE_OBJC_SYMBOL_EXPORT
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#if defined(WEBRTC_LIBRARY_IMPL)
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#define RTC_OBJC_EXPORT __attribute__((visibility("default")))
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#endif
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#endif // WEBRTC_ENABLE_OBJC_SYMBOL_EXPORT
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#ifndef RTC_OBJC_EXPORT
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#define RTC_OBJC_EXPORT
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#endif
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// Macro used to mark a function as deprecated.
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#define RTC_OBJC_DEPRECATED(msg) __attribute__((deprecated(msg)))
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// Internal macros used to correctly concatenate symbols.
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#define RTC_SYMBOL_CONCAT_HELPER(a, b) a##b
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#define RTC_SYMBOL_CONCAT(a, b) RTC_SYMBOL_CONCAT_HELPER(a, b)
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// RTC_OBJC_TYPE_PREFIX
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//
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// Macro used to prepend a prefix to the API types that are exported with
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// RTC_OBJC_EXPORT.
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//
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// Clients can patch the definition of this macro locally and build
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// WebRTC.framework with their own prefix in case symbol clashing is a
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// problem.
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//
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// This macro must be defined uniformily across all the translation units.
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#ifndef RTC_OBJC_TYPE_PREFIX
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#define RTC_OBJC_TYPE_PREFIX
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#endif
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// RCT_OBJC_TYPE
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//
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// Macro used internally to declare API types. Declaring an API type without
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// using this macro will not include the declared type in the set of types
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// that will be affected by the configurable RTC_OBJC_TYPE_PREFIX.
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#define RTC_OBJC_TYPE(type_name) \
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RTC_SYMBOL_CONCAT(RTC_OBJC_TYPE_PREFIX, type_name)
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#if defined(__cplusplus)
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#define RTC_EXTERN extern "C" RTC_OBJC_EXPORT
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#else
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#define RTC_EXTERN extern RTC_OBJC_EXPORT
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#endif
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#ifdef __OBJC__
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#define RTC_FWD_DECL_OBJC_CLASS(classname) @class classname
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#else
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#define RTC_FWD_DECL_OBJC_CLASS(classname) typedef struct objc_object classname
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#endif
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#endif // SDK_OBJC_BASE_RTCMACROS_H_
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