Repo created

TMessagesProj/jni/voip/webrtc/rtc_base/byte_order.h

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+/*
+ *  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_