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Use32BitEventSeq.h

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00001 /*******************************************************************************
00002  *
00003  * Copyright (c) 2009-2010 Philipp Werner <philipp.werner@st.ovgu.de>
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00010  *    * Redistributions of source code must retain the above copyright
00011  *      notice, this list of conditions and the following disclaimer.
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00013  *    * Redistributions in binary form must reproduce the above copyright
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00018  *    * Neither the name of the copyright holders nor the names of
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00023  *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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00039 
00040 
00041 #ifndef __USE32BITEVENTSEQ_H_06F00D78E8653E__
00042 #define __USE32BITEVENTSEQ_H_06F00D78E8653E__
00043 
00044 
00045 #include "util/endianness.h"
00046 
00047 
00048 namespace famouso {
00049     namespace mw {
00050         namespace afp {
00051             namespace frag {
00052 
00053 
00062                 template <class AFPC>
00063                 class Use32BitEventSeq {
00064 
00066                         static uint32_t & seq_clock() {
00067                             static uint32_t s = 0;
00068                             return s;
00069                         }
00070 
00072                         uint32_t seq;
00073 
00074                     public:
00075 
00077                         Use32BitEventSeq() {
00078                             // Get sequence number from seq clock and update it
00079                             seq = seq_clock()++;
00080                         }
00081 
00083                         enum { header_length = 5 };
00084 
00090                         void get_header(uint8_t * data, bool more_headers) {
00091                             if (more_headers)
00092                                 data[0] = 0x40;
00093                             else
00094                                 data[0] = 0x00;
00095 
00096                             *reinterpret_cast<uint32_t *>(data + 1) = htonl(seq);
00097                         }
00098                 };
00099 
00100 
00101             } // namespace frag
00102         } // namespace afp
00103     } // namespace mw
00104 } // namespace famouso
00105 
00106 
00107 #endif // __USE32BITEVENTSEQ_H_06F00D78E8653E__
00108