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Diffstat (limited to 'third_party/webrtc/src/webrtc/typedefs.h')
-rw-r--r-- | third_party/webrtc/src/webrtc/typedefs.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/third_party/webrtc/src/webrtc/typedefs.h b/third_party/webrtc/src/webrtc/typedefs.h new file mode 100644 index 00000000..3034c7e7 --- /dev/null +++ b/third_party/webrtc/src/webrtc/typedefs.h @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +// This file contains platform-specific typedefs and defines. +// Much of it is derived from Chromium's build/build_config.h. + +#ifndef WEBRTC_TYPEDEFS_H_ +#define WEBRTC_TYPEDEFS_H_ + +// Processor architecture detection. For more info on what's defined, see: +// http://msdn.microsoft.com/en-us/library/b0084kay.aspx +// http://www.agner.org/optimize/calling_conventions.pdf +// or with gcc, run: "echo | gcc -E -dM -" +#if defined(_M_X64) || defined(__x86_64__) +#define WEBRTC_ARCH_X86_FAMILY +#define WEBRTC_ARCH_X86_64 +#define WEBRTC_ARCH_64_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(__aarch64__) +#define WEBRTC_ARCH_64_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(_M_IX86) || defined(__i386__) +#define WEBRTC_ARCH_X86_FAMILY +#define WEBRTC_ARCH_X86 +#define WEBRTC_ARCH_32_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(__ARMEL__) +// TODO(ajm): We'd prefer to control platform defines here, but this is +// currently provided by the Android makefiles. Commented to avoid duplicate +// definition warnings. +//#define WEBRTC_ARCH_ARM +// TODO(ajm): Chromium uses the following two defines. Should we switch? +//#define WEBRTC_ARCH_ARM_FAMILY +//#define WEBRTC_ARCH_ARMEL +#define WEBRTC_ARCH_32_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(__MIPSEL__) +#define WEBRTC_ARCH_32_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#elif defined(__pnacl__) +#define WEBRTC_ARCH_32_BITS +#define WEBRTC_ARCH_LITTLE_ENDIAN +#else +#error Please add support for your architecture in typedefs.h +#endif + +#if !(defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^ defined(WEBRTC_ARCH_BIG_ENDIAN)) +#error Define either WEBRTC_ARCH_LITTLE_ENDIAN or WEBRTC_ARCH_BIG_ENDIAN +#endif + +// TODO(zhongwei.yao): WEBRTC_CPU_DETECTION is only used in one place; we should +// probably just remove it. +#if (defined(WEBRTC_ARCH_X86_FAMILY) && !defined(__SSE2__)) || \ + defined(WEBRTC_DETECT_NEON) +#define WEBRTC_CPU_DETECTION +#endif + +#if !defined(_MSC_VER) +#include <stdint.h> +#else +// Define C99 equivalent types, since pre-2010 MSVC doesn't provide stdint.h. +typedef signed char int8_t; +typedef signed short int16_t; +typedef signed int int32_t; +typedef __int64 int64_t; +typedef unsigned char uint8_t; +typedef unsigned short uint16_t; +typedef unsigned int uint32_t; +typedef unsigned __int64 uint64_t; +#endif + +// Annotate a function indicating the caller must examine the return value. +// Use like: +// int foo() WARN_UNUSED_RESULT; +// TODO(ajm): Hack to avoid multiple definitions until the base/ of webrtc and +// libjingle are merged. +#if !defined(WARN_UNUSED_RESULT) +#if defined(__GNUC__) +#define WARN_UNUSED_RESULT __attribute__((warn_unused_result)) +#else +#define WARN_UNUSED_RESULT +#endif +#endif // WARN_UNUSED_RESULT + +// Put after a variable that might not be used, to prevent compiler warnings: +// int result ATTRIBUTE_UNUSED = DoSomething(); +// assert(result == 17); +#ifndef ATTRIBUTE_UNUSED +#if defined(__GNUC__) || defined(__clang__) +#define ATTRIBUTE_UNUSED __attribute__((unused)) +#else +#define ATTRIBUTE_UNUSED +#endif +#endif + +// Macro to be used for switch-case fallthrough (required for enabling +// -Wimplicit-fallthrough warning on Clang). +#ifndef FALLTHROUGH +#if defined(__clang__) +#define FALLTHROUGH() [[clang::fallthrough]] +#else +#define FALLTHROUGH() do { } while (0) +#endif +#endif + +// Annotate a function that will not return control flow to the caller. +#if defined(_MSC_VER) +#define NO_RETURN __declspec(noreturn) +#elif defined(__GNUC__) +#define NO_RETURN __attribute__((noreturn)) +#else +#define NO_RETURN +#endif + +#endif // WEBRTC_TYPEDEFS_H_ |