213 lines
5.1 KiB
C++
213 lines
5.1 KiB
C++
/*
|
|
* Copyright 2004 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.
|
|
*/
|
|
|
|
#ifndef RTC_BASE_BYTE_ORDER_H_
|
|
#define RTC_BASE_BYTE_ORDER_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <cstring>
|
|
|
|
#if defined(WEBRTC_POSIX) && !defined(__native_client__)
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
|
|
#include "rtc_base/system/arch.h"
|
|
|
|
#if defined(WEBRTC_MAC)
|
|
#include <libkern/OSByteOrder.h>
|
|
|
|
#define htobe16(v) OSSwapHostToBigInt16(v)
|
|
#define htobe32(v) OSSwapHostToBigInt32(v)
|
|
#define htobe64(v) OSSwapHostToBigInt64(v)
|
|
#define be16toh(v) OSSwapBigToHostInt16(v)
|
|
#define be32toh(v) OSSwapBigToHostInt32(v)
|
|
#define be64toh(v) OSSwapBigToHostInt64(v)
|
|
|
|
#define htole16(v) OSSwapHostToLittleInt16(v)
|
|
#define htole32(v) OSSwapHostToLittleInt32(v)
|
|
#define htole64(v) OSSwapHostToLittleInt64(v)
|
|
#define le16toh(v) OSSwapLittleToHostInt16(v)
|
|
#define le32toh(v) OSSwapLittleToHostInt32(v)
|
|
#define le64toh(v) OSSwapLittleToHostInt64(v)
|
|
|
|
#elif defined(WEBRTC_WIN) || defined(__native_client__)
|
|
|
|
#if defined(WEBRTC_WIN)
|
|
#include <stdlib.h>
|
|
#include <winsock2.h>
|
|
#else
|
|
#include <netinet/in.h>
|
|
#endif // defined(WEBRTC_WIN)
|
|
|
|
#if defined(WEBRTC_ARCH_LITTLE_ENDIAN)
|
|
#define htobe16(v) htons(v)
|
|
#define htobe32(v) htonl(v)
|
|
#define be16toh(v) ntohs(v)
|
|
#define be32toh(v) ntohl(v)
|
|
#define htole16(v) (v)
|
|
#define htole32(v) (v)
|
|
#define htole64(v) (v)
|
|
#define le16toh(v) (v)
|
|
#define le32toh(v) (v)
|
|
#define le64toh(v) (v)
|
|
#if defined(WEBRTC_WIN)
|
|
#define htobe64(v) _byteswap_uint64(v)
|
|
#define be64toh(v) _byteswap_uint64(v)
|
|
#endif // defined(WEBRTC_WIN)
|
|
#if defined(__native_client__)
|
|
#define htobe64(v) __builtin_bswap64(v)
|
|
#define be64toh(v) __builtin_bswap64(v)
|
|
#endif // defined(__native_client__)
|
|
|
|
#elif defined(WEBRTC_ARCH_BIG_ENDIAN)
|
|
#define htobe16(v) (v)
|
|
#define htobe32(v) (v)
|
|
#define be16toh(v) (v)
|
|
#define be32toh(v) (v)
|
|
#define htole16(v) __builtin_bswap16(v)
|
|
#define htole32(v) __builtin_bswap32(v)
|
|
#define htole64(v) __builtin_bswap64(v)
|
|
#define le16toh(v) __builtin_bswap16(v)
|
|
#define le32toh(v) __builtin_bswap32(v)
|
|
#define le64toh(v) __builtin_bswap64(v)
|
|
#if defined(WEBRTC_WIN)
|
|
#define htobe64(v) (v)
|
|
#define be64toh(v) (v)
|
|
#endif // defined(WEBRTC_WIN)
|
|
#if defined(__native_client__)
|
|
#define htobe64(v) (v)
|
|
#define be64toh(v) (v)
|
|
#endif // defined(__native_client__)
|
|
#else
|
|
#error WEBRTC_ARCH_BIG_ENDIAN or WEBRTC_ARCH_LITTLE_ENDIAN must be defined.
|
|
#endif // defined(WEBRTC_ARCH_LITTLE_ENDIAN)
|
|
|
|
#elif defined(WEBRTC_POSIX)
|
|
#include <endian.h>
|
|
#else
|
|
#error "Missing byte order functions for this arch."
|
|
#endif // defined(WEBRTC_MAC)
|
|
|
|
namespace rtc {
|
|
|
|
// Reading and writing of little and big-endian numbers from memory
|
|
|
|
inline void Set8(void* memory, size_t offset, uint8_t v) {
|
|
static_cast<uint8_t*>(memory)[offset] = v;
|
|
}
|
|
|
|
inline uint8_t Get8(const void* memory, size_t offset) {
|
|
return static_cast<const uint8_t*>(memory)[offset];
|
|
}
|
|
|
|
inline void SetBE16(void* memory, uint16_t v) {
|
|
uint16_t val = htobe16(v);
|
|
memcpy(memory, &val, sizeof(val));
|
|
}
|
|
|
|
inline void SetBE32(void* memory, uint32_t v) {
|
|
uint32_t val = htobe32(v);
|
|
memcpy(memory, &val, sizeof(val));
|
|
}
|
|
|
|
inline void SetBE64(void* memory, uint64_t v) {
|
|
uint64_t val = htobe64(v);
|
|
memcpy(memory, &val, sizeof(val));
|
|
}
|
|
|
|
inline uint16_t GetBE16(const void* memory) {
|
|
uint16_t val;
|
|
memcpy(&val, memory, sizeof(val));
|
|
return be16toh(val);
|
|
}
|
|
|
|
inline uint32_t GetBE32(const void* memory) {
|
|
uint32_t val;
|
|
memcpy(&val, memory, sizeof(val));
|
|
return be32toh(val);
|
|
}
|
|
|
|
inline uint64_t GetBE64(const void* memory) {
|
|
uint64_t val;
|
|
memcpy(&val, memory, sizeof(val));
|
|
return be64toh(val);
|
|
}
|
|
|
|
inline void SetLE16(void* memory, uint16_t v) {
|
|
uint16_t val = htole16(v);
|
|
memcpy(memory, &val, sizeof(val));
|
|
}
|
|
|
|
inline void SetLE32(void* memory, uint32_t v) {
|
|
uint32_t val = htole32(v);
|
|
memcpy(memory, &val, sizeof(val));
|
|
}
|
|
|
|
inline void SetLE64(void* memory, uint64_t v) {
|
|
uint64_t val = htole64(v);
|
|
memcpy(memory, &val, sizeof(val));
|
|
}
|
|
|
|
inline uint16_t GetLE16(const void* memory) {
|
|
uint16_t val;
|
|
memcpy(&val, memory, sizeof(val));
|
|
return le16toh(val);
|
|
}
|
|
|
|
inline uint32_t GetLE32(const void* memory) {
|
|
uint32_t val;
|
|
memcpy(&val, memory, sizeof(val));
|
|
return le32toh(val);
|
|
}
|
|
|
|
inline uint64_t GetLE64(const void* memory) {
|
|
uint64_t val;
|
|
memcpy(&val, memory, sizeof(val));
|
|
return le64toh(val);
|
|
}
|
|
|
|
// Check if the current host is big endian.
|
|
inline bool IsHostBigEndian() {
|
|
#if defined(WEBRTC_ARCH_BIG_ENDIAN)
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
inline uint16_t HostToNetwork16(uint16_t n) {
|
|
return htobe16(n);
|
|
}
|
|
|
|
inline uint32_t HostToNetwork32(uint32_t n) {
|
|
return htobe32(n);
|
|
}
|
|
|
|
inline uint64_t HostToNetwork64(uint64_t n) {
|
|
return htobe64(n);
|
|
}
|
|
|
|
inline uint16_t NetworkToHost16(uint16_t n) {
|
|
return be16toh(n);
|
|
}
|
|
|
|
inline uint32_t NetworkToHost32(uint32_t n) {
|
|
return be32toh(n);
|
|
}
|
|
|
|
inline uint64_t NetworkToHost64(uint64_t n) {
|
|
return be64toh(n);
|
|
}
|
|
|
|
} // namespace rtc
|
|
|
|
#endif // RTC_BASE_BYTE_ORDER_H_
|