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. |
+ * |
+ * 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__ |
+#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 |