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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line148" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="kt">int</span> <span class="n">list_type</span><span class="p">;</span> <span class="cm">/* 0 = white, 1 = black */</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Use an enum so that things are more clear.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line153" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">153</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="kt">void</span> <span class="n">trigger_gosub_action</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_channel</span> <span class="o">*</span><span class="n">chan</span><span class="p">,</span> <span class="k">struct</span> <span class="n">ast_frame</span> <span class="o">*</span><span class="n">frame</span><span class="p">,</span><span class="ew"> </span></pre></td>
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    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">154</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                                                                        <span class="k">enum</span> <span class="n">ast_framehook_event</span> <span class="n">event</span><span class="p">,</span> <span class="k">struct</span> <span class="n">frame_trigger_data</span> <span class="o">*</span><span class="n">framedata</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span><span class="o">*</span> <span class="n">typeName</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This second line starts waaaaaay too far from the left edge.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line155" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">155</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="k">struct</span> <span class="n">ast_str</span><span class="o">*</span> <span class="n">sintesizeExtension</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_str</span> <span class="o">**</span><span class="n">buf</span><span class="p">,</span> <span class="kt">char</span><span class="o">*</span> <span class="n">requiredExtension</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span><span class="o">*</span> <span class="n">typeName</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Two things:

1. We don&#39;t use camelCase for function names in Asterisk.
2. What is &quot;sintesize?&quot;</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line175" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">175</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">controlTypeName</span><span class="p">;</span><span class="ew">                </span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">No camelCase please.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line224" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">224</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="n">ast_copy_string</span><span class="p">(</span><span class="n">framedata</span><span class="o">-&gt;</span><span class="n">triggergosub</span><span class="p">,</span> <span class="s">&quot;&quot;</span><span class="p">,</span> <span class="n">TRIGGERGOSUBMAXLENGTH</span><span class="p">);</span><span class="ew">        </span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This is not necessary because ast_calloc will zero out framedata-&gt;triggergosub.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line237" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">237</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="k">if</span> <span class="p">(</span><span class="n">value</span><span class="p">)</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">238</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="n">ast_copy_string</span><span class="p">(</span><span class="n">framedata</span><span class="o">-&gt;</span><span class="n">triggergosub</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">TRIGGERGOSUBMAXLENGTH</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Add curly braces.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line288" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">288</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="kt">void</span> <span class="nf">trigger_gosub_action</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_channel</span> <span class="o">*</span><span class="n">chan</span><span class="p">,</span> <span class="k">struct</span> <span class="n">ast_frame</span> <span class="o">*</span><span class="n">frame</span><span class="p">,</span> <span class="k">enum</span> <span class="n">ast_framehook_event</span> <span class="n">event</span><span class="p">,</span> <span class="k">struct</span> <span class="n">frame_trigger_data</span> <span class="o">*</span><span class="n">framedata</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span><span class="o">*</span> <span class="n">typeName</span><span class="p">)</span><span class="ew"> </span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">No camelCase</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line293" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">framedata</span> <span class="o">||</span> <span class="o">!</span><span class="n">chan</span> <span class="o">||</span> <span class="o">!</span><span class="n">frame</span> <span class="o">||</span> <span class="o">!</span><span class="n">typeName</span><span class="p">)</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="k">return</span><span class="p">;</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Curly braces please.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1778/diff/1/?file=25109#file25109line298" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/funcs/func_frame_trigger.c</a>
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   <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct frame_trigger_data {</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="k">return</span><span class="p">;</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Curly braces please.</pre>
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<p>- Mark</p>


<br />
<p>On February 29th, 2012, 10:02 a.m., Marco Signorini wrote:</p>






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<div>Review request for Asterisk Developers.</div>
<div>By Marco Signorini.</div>


<p style="color: grey;"><i>Updated Feb. 29, 2012, 10:02 a.m.</i></p>




<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">A filter can be applied to the trigger to limit frames sensibility. This filter can either be a white or black list of control frame types. When no filter type is present, white is used. If no arguments are provided at all, all frames will trigger the specified gosub call.
If the specified gosub extension is not present on the dialplan, the function will gosub to the &quot;s-XXXX&quot; extension in the gosub context where XXXX is the type of the control frame.
It can be set only once on a given channel.

Examples:
exten =&gt; 1,1,Set(FRAME_TRIGGER(white, CONTROL_HOLD)=ext,context); trigger gosub ext-CONTROL_HOLD@context only for HOLD type control frames
exten =&gt; 1,1,Set(FRAME_TRIGGER(black, CONTROL_HOLD)=ext,context); trigger gosub ext-CONTROL_XXXX@context for all control type frames except for HOLD type control frames
exten =&gt; 1,1,Set(FRAME_TRIGGER(CONTROL_HOLD, CONTROL_UNHOLD)=context) ; trigger gosub to s-CONTROL_HOLD@context and s-CONTROL_UNHOLD context only for HOLD and UNHOLD type control frames

This feature was originally developed in order to track MOH events in a call center environment but has general interest.
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<div style="margin-top: 1.5em;">
 <b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>


 <a href="https://issues.asterisk.org/jira/browse/ASTERISK-19319">ASTERISK-19319</a>


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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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 <li>/trunk/funcs/func_frame_trigger.c <span style="color: grey">(PRE-CREATION)</span></li>

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<p><a href="https://reviewboard.asterisk.org/r/1778/diff/" style="margin-left: 3em;">View Diff</a></p>




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