1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 // This file contains platform-specific typedefs and defines. 12 // Much of it is derived from Chromium's build/build_config.h. 13 14 #ifndef WEBRTC_TYPEDEFS_H_ 15 #define WEBRTC_TYPEDEFS_H_ 16 17 // Processor architecture detection. For more info on what's defined, see: 18 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx 19 // http://www.agner.org/optimize/calling_conventions.pdf 20 // or with gcc, run: "echo | gcc -E -dM -" 21 #if defined(_M_X64) || defined(__x86_64__) 22 #define WEBRTC_ARCH_X86_FAMILY 23 #define WEBRTC_ARCH_X86_64 24 #define WEBRTC_ARCH_64_BITS 25 #define WEBRTC_ARCH_LITTLE_ENDIAN 26 #elif defined(__aarch64__) 27 #define WEBRTC_ARCH_64_BITS 28 #define WEBRTC_ARCH_LITTLE_ENDIAN 29 #elif defined(_M_IX86) || defined(__i386__) 30 #define WEBRTC_ARCH_X86_FAMILY 31 #define WEBRTC_ARCH_X86 32 #define WEBRTC_ARCH_32_BITS 33 #define WEBRTC_ARCH_LITTLE_ENDIAN 34 #elif defined(__ARMEL__) 35 // TODO(ajm): We'd prefer to control platform defines here, but this is 36 // currently provided by the Android makefiles. Commented to avoid duplicate 37 // definition warnings. 38 //#define WEBRTC_ARCH_ARM 39 // TODO(ajm): Chromium uses the following two defines. Should we switch? 40 //#define WEBRTC_ARCH_ARM_FAMILY 41 //#define WEBRTC_ARCH_ARMEL 42 #define WEBRTC_ARCH_32_BITS 43 #define WEBRTC_ARCH_LITTLE_ENDIAN 44 #elif defined(__MIPSEL__) 45 #define WEBRTC_ARCH_32_BITS 46 #define WEBRTC_ARCH_LITTLE_ENDIAN 47 #elif defined(__pnacl__) 48 #define WEBRTC_ARCH_32_BITS 49 #define WEBRTC_ARCH_LITTLE_ENDIAN 50 #else 51 #error Please add support for your architecture in typedefs.h 52 #endif 53 54 #if !(defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^ defined(WEBRTC_ARCH_BIG_ENDIAN)) 55 #error Define either WEBRTC_ARCH_LITTLE_ENDIAN or WEBRTC_ARCH_BIG_ENDIAN 56 #endif 57 58 #if (defined(WEBRTC_ARCH_X86_FAMILY) && !defined(__SSE2__)) || \ 59 (defined(WEBRTC_ARCH_ARM_V7) && !defined(WEBRTC_ARCH_ARM_NEON)) 60 #define WEBRTC_CPU_DETECTION 61 #endif 62 63 #if !defined(_MSC_VER) 64 #include <stdint.h> 65 #else 66 // Define C99 equivalent types, since pre-2010 MSVC doesn't provide stdint.h. 67 typedef signed char int8_t; 68 typedef signed short int16_t; 69 typedef signed int int32_t; 70 typedef __int64 int64_t; 71 typedef unsigned char uint8_t; 72 typedef unsigned short uint16_t; 73 typedef unsigned int uint32_t; 74 typedef unsigned __int64 uint64_t; 75 #endif 76 77 // Borrowed from Chromium's base/compiler_specific.h. 78 // Annotate a virtual method indicating it must be overriding a virtual 79 // method in the parent class. 80 // Use like: 81 // virtual void foo() OVERRIDE; 82 #if defined(_MSC_VER) 83 #define OVERRIDE override 84 #elif defined(__clang__) 85 // Clang defaults to C++03 and warns about using override. Squelch that. 86 // Intentionally no push/pop here so all users of OVERRIDE ignore the warning 87 // too. This is like passing -Wno-c++11-extensions, except that GCC won't die 88 // (because it won't see this pragma). 89 #pragma clang diagnostic ignored "-Wc++11-extensions" 90 #define OVERRIDE override 91 #elif defined(__GNUC__) && __cplusplus >= 201103 && \ 92 (__GNUC__ * 10000 + __GNUC_MINOR__ * 100) >= 40700 93 // GCC 4.7 supports explicit virtual overrides when C++11 support is enabled. 94 #define OVERRIDE override 95 #else 96 #define OVERRIDE 97 #endif 98 99 // Annotate a function indicating the caller must examine the return value. 100 // Use like: 101 // int foo() WARN_UNUSED_RESULT; 102 // TODO(ajm): Hack to avoid multiple definitions until the base/ of webrtc and 103 // libjingle are merged. 104 #if !defined(WARN_UNUSED_RESULT) 105 #if defined(__GNUC__) 106 #define WARN_UNUSED_RESULT __attribute__((warn_unused_result)) 107 #else 108 #define WARN_UNUSED_RESULT 109 #endif 110 #endif // WARN_UNUSED_RESULT 111 112 #endif // WEBRTC_TYPEDEFS_H_ 113
