Chromium Code Reviews| Index: third_party/libjingle/overrides/talk/base/byteorder.h |
| =================================================================== |
| --- third_party/libjingle/overrides/talk/base/byteorder.h (revision 0) |
| +++ third_party/libjingle/overrides/talk/base/byteorder.h (revision 0) |
| @@ -0,0 +1,172 @@ |
| +/* |
| + * libjingle |
| + * Copyright 2004--2005, Google Inc. |
|
tommi (sloooow) - chröme
2012/02/28 21:32:18
2012?
Is this the correct license header?
Ronghua Wu (Left Chromium)
2012/02/28 23:16:57
This is from the original code from libjingle. Do
tommi (sloooow) - chröme
2012/02/29 09:54:22
ah, nevermind then.
|
| + * |
| + * Redistribution and use in source and binary forms, with or without |
| + * modification, are permitted provided that the following conditions are met: |
| + * |
| + * 1. Redistributions of source code must retain the above copyright notice, |
| + * this list of conditions and the following disclaimer. |
| + * 2. Redistributions in binary form must reproduce the above copyright notice, |
| + * this list of conditions and the following disclaimer in the documentation |
| + * and/or other materials provided with the distribution. |
| + * 3. The name of the author may not be used to endorse or promote products |
| + * derived from this software without specific prior written permission. |
| + * |
| + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| + */ |
| + |
| +#ifndef TALK_BASE_BYTEORDER_H__ |
|
tommi (sloooow) - chröme
2012/02/28 21:32:18
should be only one trailing _
Ronghua Wu (Left Chromium)
2012/02/28 23:16:57
This is the libjingle code, I didn't change it.
tommi (sloooow) - chröme
2012/02/29 09:54:22
ok. sgtm.
|
| +#define TALK_BASE_BYTEORDER_H__ |
| + |
| +#ifdef POSIX |
| +#include <arpa/inet.h> |
| +#endif |
| + |
| +#ifdef WIN32 |
| +#include "talk/base/win32.h" |
| +#endif |
| + |
| +#include "talk/base/basictypes.h" |
| + |
| +namespace talk_base { |
| + |
| +// Reading and writing of little and big-endian numbers from memory |
| +// TODO: Add HostEndian #defines (HE) |
| +// TODO: Consider NetworkEndian as synonym for BigEndian, for clarity in use. |
| +// TODO: Consider creating optimized versions, such as direct read/writes of |
| +// integers in host-endian format, when the platform supports it. |
| + |
| +inline void Set8(void* memory, size_t offset, uint8 v) { |
| + static_cast<uint8*>(memory)[offset] = v; |
| +} |
| +inline uint8 Get8(const void* memory, size_t offset) { |
| + return static_cast<const uint8*>(memory)[offset]; |
| +} |
| + |
| +inline void SetBE16(void* memory, uint16 v) { |
| + Set8(memory, 0, static_cast<uint8>(v >> 8)); |
| + Set8(memory, 1, static_cast<uint8>(v >> 0)); |
| +} |
| +inline void SetBE32(void* memory, uint32 v) { |
| + Set8(memory, 0, static_cast<uint8>(v >> 24)); |
| + Set8(memory, 1, static_cast<uint8>(v >> 16)); |
| + Set8(memory, 2, static_cast<uint8>(v >> 8)); |
| + Set8(memory, 3, static_cast<uint8>(v >> 0)); |
| +} |
| +inline void SetBE64(void* memory, uint64 v) { |
| + Set8(memory, 0, static_cast<uint8>(v >> 56)); |
| + Set8(memory, 1, static_cast<uint8>(v >> 48)); |
| + Set8(memory, 2, static_cast<uint8>(v >> 40)); |
| + Set8(memory, 3, static_cast<uint8>(v >> 32)); |
| + Set8(memory, 4, static_cast<uint8>(v >> 24)); |
| + Set8(memory, 5, static_cast<uint8>(v >> 16)); |
| + Set8(memory, 6, static_cast<uint8>(v >> 8)); |
| + Set8(memory, 7, static_cast<uint8>(v >> 0)); |
| +} |
| +inline uint16 GetBE16(const void* memory) { |
| + return (static_cast<uint16>(Get8(memory, 0)) << 8) |
| + | (static_cast<uint16>(Get8(memory, 1)) << 0); |
| +} |
| +inline uint32 GetBE32(const void* memory) { |
| + return (static_cast<uint32>(Get8(memory, 0)) << 24) |
| + | (static_cast<uint32>(Get8(memory, 1)) << 16) |
| + | (static_cast<uint32>(Get8(memory, 2)) << 8) |
| + | (static_cast<uint32>(Get8(memory, 3)) << 0); |
| +} |
| +inline uint64 GetBE64(const void* memory) { |
| + return (static_cast<uint64>(Get8(memory, 0)) << 56) |
| + | (static_cast<uint64>(Get8(memory, 1)) << 48) |
| + | (static_cast<uint64>(Get8(memory, 2)) << 40) |
| + | (static_cast<uint64>(Get8(memory, 3)) << 32) |
| + | (static_cast<uint64>(Get8(memory, 4)) << 24) |
| + | (static_cast<uint64>(Get8(memory, 5)) << 16) |
| + | (static_cast<uint64>(Get8(memory, 6)) << 8) |
| + | (static_cast<uint64>(Get8(memory, 7)) << 0); |
| +} |
| + |
| +inline void SetLE16(void* memory, uint16 v) { |
| + Set8(memory, 1, static_cast<uint8>(v >> 8)); |
| + Set8(memory, 0, static_cast<uint8>(v >> 0)); |
| +} |
| +inline void SetLE32(void* memory, uint32 v) { |
| + Set8(memory, 3, static_cast<uint8>(v >> 24)); |
| + Set8(memory, 2, static_cast<uint8>(v >> 16)); |
| + Set8(memory, 1, static_cast<uint8>(v >> 8)); |
| + Set8(memory, 0, static_cast<uint8>(v >> 0)); |
| +} |
| +inline void SetLE64(void* memory, uint64 v) { |
| + Set8(memory, 7, static_cast<uint8>(v >> 56)); |
| + Set8(memory, 6, static_cast<uint8>(v >> 48)); |
| + Set8(memory, 5, static_cast<uint8>(v >> 40)); |
| + Set8(memory, 4, static_cast<uint8>(v >> 32)); |
| + Set8(memory, 3, static_cast<uint8>(v >> 24)); |
| + Set8(memory, 2, static_cast<uint8>(v >> 16)); |
| + Set8(memory, 1, static_cast<uint8>(v >> 8)); |
| + Set8(memory, 0, static_cast<uint8>(v >> 0)); |
| +} |
| +inline uint16 GetLE16(const void* memory) { |
| + return (static_cast<uint16>(Get8(memory, 1)) << 8) |
| + | (static_cast<uint16>(Get8(memory, 0)) << 0); |
| +} |
| +inline uint32 GetLE32(const void* memory) { |
| + return (static_cast<uint32>(Get8(memory, 3)) << 24) |
| + | (static_cast<uint32>(Get8(memory, 2)) << 16) |
| + | (static_cast<uint32>(Get8(memory, 1)) << 8) |
| + | (static_cast<uint32>(Get8(memory, 0)) << 0); |
| +} |
| +inline uint64 GetLE64(const void* memory) { |
| + return (static_cast<uint64>(Get8(memory, 7)) << 56) |
| + | (static_cast<uint64>(Get8(memory, 6)) << 48) |
| + | (static_cast<uint64>(Get8(memory, 5)) << 40) |
| + | (static_cast<uint64>(Get8(memory, 4)) << 32) |
| + | (static_cast<uint64>(Get8(memory, 3)) << 24) |
| + | (static_cast<uint64>(Get8(memory, 2)) << 16) |
| + | (static_cast<uint64>(Get8(memory, 1)) << 8) |
| + | (static_cast<uint64>(Get8(memory, 0)) << 0); |
| +} |
| + |
| +// Check if the current host is big endian. |
| +inline bool IsHostBigEndian() { |
| + static const int number = 1; |
| + return (0 == *reinterpret_cast<const char*>(&number)); |
| +} |
| + |
| +inline uint16 HostToNetwork16(uint16 n) { |
| + return htons(n); |
| +} |
| + |
| +inline uint32 HostToNetwork32(uint32 n) { |
| + return htonl(n); |
| +} |
| + |
| +inline uint64 HostToNetwork64(uint64 n) { |
| + // If the host is little endian, GetBE64 converts n to big network endian. |
| + return IsHostBigEndian() ? n : GetBE64(&n); |
| +} |
| + |
| +inline uint16 NetworkToHost16(uint16 n) { |
| + return ntohs(n); |
| +} |
| + |
| +inline uint32 NetworkToHost32(uint32 n) { |
| + return ntohl(n); |
| +} |
| + |
| +inline uint64 NetworkToHost64(uint64 n) { |
| + // If the host is little endian, GetBE64 converts n to little endian. |
| + return IsHostBigEndian() ? n : GetBE64(&n); |
| +} |
| + |
| +} // namespace talk_base |
| + |
| +#endif // TALK_BASE_BYTEORDER_H__ |
| Property changes on: third_party\libjingle\overrides\talk\base\byteorder.h |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| + LF |