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<div class="title">mainReceiver.cpp File Reference</div> </div>
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<div class="textblock"><code>#include "sls_receiver_defs.h"</code><br/>
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<code>#include "<a class="el" href="slsReceiverUsers_8h_source.html">slsReceiverUsers.h</a>"</code><br/>
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<code>#include <iostream></code><br/>
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<code>#include <string.h></code><br/>
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<code>#include <signal.h></code><br/>
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<code>#include <cstdlib></code><br/>
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<code>#include <sys/types.h></code><br/>
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<code>#include <sys/wait.h></code><br/>
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<code>#include <string></code><br/>
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<code>#include <unistd.h></code><br/>
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<code>#include <errno.h></code><br/>
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<code>#include <syscall.h></code><br/>
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</div>
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<p><a href="mainReceiver_8cpp_source.html">Go to the source code of this file.</a></p>
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Macros</h2></td></tr>
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<tr class="memitem:aeac6a4b86729a7e07100fb58600d6481"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#aeac6a4b86729a7e07100fb58600d6481">PRINT_IN_COLOR</a>(c, f,...)   printf ("\033[%dm" f RESET, 30 + c+1, ##__VA_ARGS__)</td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ac72dad9b593583bd4bf508a979c00f70"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#ac72dad9b593583bd4bf508a979c00f70">sigInterruptHandler</a> (int p)</td></tr>
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<tr class="separator:ac72dad9b593583bd4bf508a979c00f70"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0d20b69b0ad703df78459e1033d5c1d4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a0d20b69b0ad703df78459e1033d5c1d4">printHelp</a> ()</td></tr>
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<tr class="separator:a0d20b69b0ad703df78459e1033d5c1d4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a1ec49915ff49957985ebfe6ccc5cd1b3"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a1ec49915ff49957985ebfe6ccc5cd1b3">StartAcq</a> (char *filepath, char *filename, uint64_t fileindex, uint32_t datasize, void *p)</td></tr>
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<tr class="separator:a1ec49915ff49957985ebfe6ccc5cd1b3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a013a16dd72eca4216a42196c4d9c0335"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a013a16dd72eca4216a42196c4d9c0335">AcquisitionFinished</a> (uint64_t frames, void *p)</td></tr>
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<tr class="separator:a013a16dd72eca4216a42196c4d9c0335"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a009e34ab0d3ebfcf32f4421a2b462311"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a009e34ab0d3ebfcf32f4421a2b462311">GetData</a> (char *metadata, char *datapointer, uint32_t datasize, void *p)</td></tr>
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<tr class="separator:a009e34ab0d3ebfcf32f4421a2b462311"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8e11c5abfd4b3684eef27775aac7071e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a8e11c5abfd4b3684eef27775aac7071e">GetData</a> (char *metadata, char *datapointer, uint32_t &revDatasize, void *p)</td></tr>
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<tr class="separator:a8e11c5abfd4b3684eef27775aac7071e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0ddf1224851353fc92bfbff6f499fa97"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a0ddf1224851353fc92bfbff6f499fa97">main</a> (int argc, char *argv[])</td></tr>
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<tr class="separator:a0ddf1224851353fc92bfbff6f499fa97"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
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Variables</h2></td></tr>
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<tr class="memitem:a0d26a166bb416ff34512de6fe9e098bd"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="mainReceiver_8cpp.html#a0d26a166bb416ff34512de6fe9e098bd">keeprunning</a></td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>This file is an example of how to implement the <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks can be defined for p...">slsReceiverUsers</a> class You can compile it linking it to the slsReceiver library</p>
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<p>g++ <a class="el" href="mainReceiver_8cpp.html">mainReceiver.cpp</a> -L lib -lSlsReceiver -L/usr/lib64/ -L lib2 -lzmq -pthread -lrt -lm -lstdc++</p>
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<p>where,</p>
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<p>lib is the location of lSlsReceiver.so</p>
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<p>lib2 is the location of the libzmq.a. [ libzmq.a is required only when using data call backs and enabling data streaming from receiver to client. It is linked in manual/manual-api from slsReceiverSoftware/include ] </p>
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<p>Definition in file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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</div><h2 class="groupheader">Macro Definition Documentation</h2>
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<a class="anchor" id="aeac6a4b86729a7e07100fb58600d6481"></a>
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<div class="memitem">
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<td class="memname">#define PRINT_IN_COLOR</td>
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<td>(</td>
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<td class="paramtype"> </td>
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<td class="paramname">c, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"> </td>
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<td class="paramname">f, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"> </td>
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<td class="paramname"><em>...</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td>   printf ("\033[%dm" f RESET, 30 + c+1, ##__VA_ARGS__)</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Define Colors to print data call back in different colors for different recievers </p>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00038">38</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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</div>
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</div>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="a013a16dd72eca4216a42196c4d9c0335"></a>
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<div class="memitem">
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<td class="memname">void AcquisitionFinished </td>
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<td>(</td>
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<td class="paramtype">uint64_t </td>
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<td class="paramname"><em>frames</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>p</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p>Acquisition Finished Call back </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">frames</td><td>Number of frames caught </td></tr>
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<tr><td class="paramname">p</td><td>pointer to object </td></tr>
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</table>
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</dd>
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</dl>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00085">85</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a009e34ab0d3ebfcf32f4421a2b462311"></a>
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<td class="memname">void GetData </td>
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<td>(</td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>metadata</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>datapointer</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>datasize</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>p</em> </td>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p>Get Receiver Data Call back Prints in different colors(for each receiver process) the different headers for each image call back. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">metadata</td><td>sls_receiver_header metadata </td></tr>
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<tr><td class="paramname">datapointer</td><td>pointer to data </td></tr>
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<tr><td class="paramname">datasize</td><td>data size in bytes. </td></tr>
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<tr><td class="paramname">p</td><td>pointer to object </td></tr>
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</table>
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</dd>
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</dl>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00098">98</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<a class="anchor" id="a8e11c5abfd4b3684eef27775aac7071e"></a>
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<td class="memname">void GetData </td>
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<td>(</td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>metadata</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>datapointer</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t & </td>
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<td class="paramname"><em>revDatasize</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>p</em> </td>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p>Get Receiver Data Call back (modified) Prints in different colors(for each receiver process) the different headers for each image call back. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">metadata</td><td>sls_receiver_header metadata </td></tr>
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<tr><td class="paramname">datapointer</td><td>pointer to data </td></tr>
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<tr><td class="paramname">datasize</td><td>data size in bytes. </td></tr>
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<tr><td class="paramname">revDatasize</td><td>new data size in bytes after the callback. This will be the size written/streamed. (only smaller value is allowed). </td></tr>
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<tr><td class="paramname">p</td><td>pointer to object </td></tr>
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</table>
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</dd>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00132">132</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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<td class="memname">int main </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>argc</em>, </td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>argv</em>[] </td>
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<td>)</td>
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<p>Example of main program using the <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks can be defined for p...">slsReceiverUsers</a> class</p>
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<ul>
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<li>Defines in file for:<ul>
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<li>Default Number of receivers is 1</li>
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<li>Default Start TCP port is 1954 </li>
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</ul>
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</li>
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</ul>
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<ul>
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<li>set default values</li>
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<li>get number of receivers and start tcp port from command line arguments</li>
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<li>Catch signal SIGINT to close files and call destructors properly<ul>
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<li>Ignore SIG_PIPE, prevents global signal handler, handle locally, instead of a server crashing due to client crash when writing, it just gives error</li>
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</ul>
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</li>
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<li>loop over number of receivers</li>
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<li>fork process to create child process</li>
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<li>if fork failed, raise SIGINT and properly destroy all child processes</li>
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<li>if child process</li>
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<li>create <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks can be defined for p...">slsReceiverUsers</a> object with appropriate arguments <pre class="fragment"> - register callbacks. remember to set file write enable to 0 (using the client)
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</pre> if we should not write files and you will write data using the callbacks</li>
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<li>Call back for start acquisition</li>
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<li>Call back for acquisition finished</li>
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<li>start tcp server thread</li>
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<li>as long as keeprunning is true (changes with Ctrl+C)</li>
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<li>interrupt caught, delete <a class="el" href="classslsReceiverUsers.html" title="Class for implementing the SLS data receiver in the users application. Callbacks can be defined for p...">slsReceiverUsers</a> object and exit</li>
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<li>Parent process ignores SIGINT (exits only when all child process exits)</li>
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<li>Print Ready and Instructions how to exit</li>
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<li>Parent process waits for all child processes to exit </li>
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</ul>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00167">167</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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</div>
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</div>
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<a class="anchor" id="a0d20b69b0ad703df78459e1033d5c1d4"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void printHelp </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>prints usage of this example program </p>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00055">55</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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</div>
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</div>
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<a class="anchor" id="ac72dad9b593583bd4bf508a979c00f70"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void sigInterruptHandler </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>p</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Control+C Interrupt Handler Sets the variable keeprunning to false, to let all the processes know to exit properly </p>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00048">48</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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</div>
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</div>
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<a class="anchor" id="a1ec49915ff49957985ebfe6ccc5cd1b3"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int StartAcq </td>
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<td>(</td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>filepath</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">char * </td>
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<td class="paramname"><em>filename</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint64_t </td>
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<td class="paramname"><em>fileindex</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>datasize</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">void * </td>
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<td class="paramname"><em>p</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Start Acquisition Call back slsReceiver writes data if file write enabled. Users get data to write using call back if registerCallBackRawDataReady is registered. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">filepath</td><td>file path </td></tr>
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<tr><td class="paramname">filename</td><td>file name </td></tr>
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<tr><td class="paramname">fileindex</td><td>file index </td></tr>
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<tr><td class="paramname">datasize</td><td>data size in bytes </td></tr>
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<tr><td class="paramname">p</td><td>pointer to object </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>ignored </dd></dl>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00072">72</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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</div>
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</div>
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<h2 class="groupheader">Variable Documentation</h2>
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<a class="anchor" id="a0d26a166bb416ff34512de6fe9e098bd"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">bool keeprunning</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Variable is true to continue running, set to false upon interrupt </p>
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<p>Definition at line <a class="el" href="mainReceiver_8cpp_source.html#l00042">42</a> of file <a class="el" href="mainReceiver_8cpp_source.html">mainReceiver.cpp</a>.</p>
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