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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void spandsp_v21_tone(void *data, int code, int level, int delay)</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="k">if</span> <span class="p">(</span><span class="n">f</span><span class="o">-></span><span class="n">subclass</span><span class="p">.</span><span class="n">format</span><span class="p">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">AST_FORMAT_SLINEAR</span><span class="p">)</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;">Red blob (extraneous trailing white space)

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    <a href="https://reviewboard.asterisk.org/r/3296/diff/1/?file=55235#file55235line672" style="color: black; font-weight: bold; text-decoration: underline;">/branches/11/res/res_fax_spandsp.c</a>
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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void spandsp_v21_tone(void *data, int code, int level, int delay)</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">672</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="tb">  </span><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span> <span class="n">slndata</span> <span class="o">=</span> <span class="n">ast_malloc</span><span class="p">(</span> <span class="k">sizeof</span><span class="p">(</span><span class="kt">int16_t</span><span class="p">)</span> <span class="o">*</span> <span class="n">f</span><span class="o">-></span><span class="n">samples</span> <span class="p">)</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">673</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="tb">  </span><span class="tb">  </span><span class="k">return</span> <span class="o">-</span><span class="mi">1</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;">Coding guidelines (https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines):

2.6.2: Use { } even for single lines.

2.6: Remove the extra spaces between parentheses.

2.17.3: Use sizeof(*slndata), as opposed to the explicit type.</pre>
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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void spandsp_v21_tone(void *data, int code, int level, int delay)</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">674</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="tb">  </span><span class="n">decoder</span> <span class="o">=</span> <span class="n">g711_init</span><span class="p">(</span><span class="nb">NULL</span><span class="p">,</span> <span class="p">(</span><span class="n">f</span><span class="o">-></span><span class="n">subclass</span><span class="p">.</span><span class="n">format</span><span class="p">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">AST_FORMAT_ALAW</span> <span class="o">?</span> <span class="n">G711_ALAW</span> <span class="o">:</span> <span class="n">G711_ULAW</span><span class="p">)</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;">Coding guidelines, extra spaces around parantheses</pre>
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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void spandsp_v21_tone(void *data, int code, int level, int delay)</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">676</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="tb">  </span><span class="n">ast_debug</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="s">"spandsp transcoding frame from %s to slinear for v21 detection, ptr=%p </span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="p">(</span><span class="n">f</span><span class="o">-></span><span class="n">subclass</span><span class="p">.</span><span class="n">format</span><span class="p">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">AST_FORMAT_ALAW</span> <span class="o">?</span> <span class="s">"G711_ALAW"</span> <span class="o">:</span> <span class="s">"G711_ULAW"</span><span class="p">),</span> <span class="n">slndata</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;">I'd remove the ptr value here. It doesn't add much value, as you malloc it here and it isn't output elsewhere.</pre>
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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void spandsp_v21_tone(void *data, int code, int level, int delay)</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">683</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="tb">  </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_WARNING</span><span class="p">,</span> <span class="s">"unknown frame format, v.21 detection skipped</span><span class="se">\n</span><span class="s">"</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;">Capitalization:

"Unknown frame ..."

You should also provide the frame format type for debugging:

"Unknown frame format %d ...", f->subclass.format.id</pre>
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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void spandsp_v21_tone(void *data, int code, int level, int delay)</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">689</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb">   </span><span class="tb">  </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_NOTICE</span><span class="p">,</span> <span class="s">"v.21 detected</span><span class="se">\n</span><span class="s">"</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 should be demoted to a debug message.</pre>
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<p>- Matt Jordan</p>


<br />
<p>On March 3rd, 2014, 7:30 p.m. CST, Michal Rybarik wrote:</p>








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<div>Review request for Asterisk Developers.</div>
<div>By Michal Rybarik.</div>


<p style="color: grey;"><i>Updated March 3, 2014, 7:30 p.m.</i></p>







<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-20149">ASTERISK-20149</a>


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 <b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<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;">T.38 gateway was producing random segfaults in libspandsp (during fax tone detection). Segfaults could happen when alaw/ulaw frames were passed to libspandsp code, because this code expect only slinear frames. Recoding of alaw/ulaw to slinear was added here.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </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;">Used in production on 3 hosts (2x SIP/DAHDI, 1x SIP/SIP), no segfault seen after applying patch (month ago). Before patch, there were segfaults every few days.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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 <li>/branches/11/res/res_fax_spandsp.c <span style="color: grey">(407152)</span></li>

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