From 109ffe9a777658936a38d0c146579a67c60a0d17 Mon Sep 17 00:00:00 2001
From: xuxiuxi <xuxiuxi@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期四, 11 五月 2017 17:48:48 +0800
Subject: [PATCH] 

---
 VisitFace/RtspNativeCodec/app/libs/live555/include/groupsock/TunnelEncaps.hh |  101 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 101 insertions(+), 0 deletions(-)

diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/groupsock/TunnelEncaps.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/groupsock/TunnelEncaps.hh
new file mode 100644
index 0000000..a0864f0
--- /dev/null
+++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/groupsock/TunnelEncaps.hh
@@ -0,0 +1,101 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2017 Live Networks, Inc.  All rights reserved.
+// Encapsulation trailer for tunnels
+// C++ header
+
+#ifndef _TUNNEL_ENCAPS_HH
+#define _TUNNEL_ENCAPS_HH
+
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+
+typedef u_int16_t Cookie;
+
+class TunnelEncapsulationTrailer {
+	// The trailer is layed out as follows:
+	// bytes 0-1:	source 'cookie'
+	// bytes 2-3:	destination 'cookie'
+	// bytes 4-7:	address
+	// bytes 8-9:	port
+	// byte 10:	ttl
+	// byte 11:	command
+
+        // Optionally, there may also be a 4-byte 'auxilliary address'
+        // (e.g., for 'source-specific multicast' preceding this)
+        // bytes -4 through -1: auxilliary address
+
+    public:
+	Cookie& srcCookie()
+		{ return *(Cookie*)byteOffset(0); }
+	Cookie& dstCookie()
+		{ return *(Cookie*)byteOffset(2); }
+	u_int32_t& address()
+		{ return *(u_int32_t*)byteOffset(4); }
+	Port& port()
+		{ return *(Port*)byteOffset(8); }
+	u_int8_t& ttl()
+		{ return *(u_int8_t*)byteOffset(10); }
+	u_int8_t& command()
+		{ return *(u_int8_t*)byteOffset(11); }
+
+        u_int32_t& auxAddress()
+                { return *(u_int32_t*)byteOffset(-4); }
+
+    private:
+	inline char* byteOffset(int charIndex)
+		{ return ((char*)this) + charIndex; }
+};
+
+const unsigned TunnelEncapsulationTrailerSize = 12; // bytes
+const unsigned TunnelEncapsulationTrailerAuxSize = 4; // bytes
+const unsigned TunnelEncapsulationTrailerMaxSize
+    = TunnelEncapsulationTrailerSize + TunnelEncapsulationTrailerAuxSize;
+
+// Command codes:
+// 0: unused
+const u_int8_t TunnelDataCmd = 1;
+const u_int8_t TunnelJoinGroupCmd = 2;
+const u_int8_t TunnelLeaveGroupCmd = 3;
+const u_int8_t TunnelTearDownCmd = 4;
+const u_int8_t TunnelProbeCmd = 5;
+const u_int8_t TunnelProbeAckCmd = 6;
+const u_int8_t TunnelProbeNackCmd = 7;
+const u_int8_t TunnelJoinRTPGroupCmd = 8;
+const u_int8_t TunnelLeaveRTPGroupCmd = 9;
+// 0x0A through 0x10: currently unused.
+const u_int8_t TunnelExtensionFlag = 0x80; // a flag, not a cmd code
+const u_int8_t TunnelDataAuxCmd
+    = (TunnelExtensionFlag|TunnelDataCmd);
+const u_int8_t TunnelJoinGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelJoinGroupCmd);
+const u_int8_t TunnelLeaveGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelLeaveGroupCmd);
+// Note: the TearDown, Probe, ProbeAck, ProbeNack cmds have no Aux version
+// 0x84 through 0x87: currently unused.
+const u_int8_t TunnelJoinRTPGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelJoinRTPGroupCmd);
+const u_int8_t TunnelLeaveRTPGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelLeaveRTPGroupCmd);
+// 0x8A through 0xFF: currently unused
+
+inline Boolean TunnelIsAuxCmd(u_int8_t cmd) {
+  return (cmd&TunnelExtensionFlag) != 0;
+}
+
+#endif

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