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<h1>Video Program System Decoder<br>
<small>
[<a class="el" href="group__LowDec.html">Low Level Decoding</a>]</small>
</h1>Functions to decode and encode VPS packets (EN 300 231, EN 300 468).
<a href="#_details">More...</a>
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<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">vbi_bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__VPS.html#ge7fc7752981892961b360789f3a22496">vbi_decode_vps_cni</a> (unsigned int *cni, const uint8_t buffer[13])</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">vbi_bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__VPS.html#g8cd549b25532ae4c6aa4f32a9b1eaa96">vbi_encode_vps_cni</a> (uint8_t buffer[13], unsigned int cni) _vbi_nonnull((1))</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
Functions to decode and encode VPS packets (EN 300 231, EN 300 468). <hr><h2>Function Documentation</h2>
<a class="anchor" name="ge7fc7752981892961b360789f3a22496"></a><!-- doxytag: member="vps.h::vbi_decode_vps_cni" ref="ge7fc7752981892961b360789f3a22496" args="(unsigned int *cni, const uint8_t buffer[13])" -->
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<td class="memname">vbi_bool vbi_decode_vps_cni </td>
<td>(</td>
<td class="paramtype">unsigned int * </td>
<td class="paramname"> <em>cni</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const uint8_t </td>
<td class="paramname"> <em>buffer</em>[13]</td><td> </td>
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<td>)</td>
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<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>cni</em> </td><td>CNI of type VBI_CNI_TYPE_VPS will be stored here. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>VPS packet as defined for <code>VBI_SLICED_VPS</code>, i.e. 13 bytes without clock run-in and start code.</td></tr>
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Decodes a VPS packet according to EN 300 231, returning the 12 bit Country and Network Identifier in <em>cni</em>.<p>
The code 0xDC3 is translated according to TR 101 231: "As this code is used for a time in two networks a distinction for automatic tuning systems is given in data line 16 [VPS]: bit 3 of byte 5 = 1 for the ARD network / = 0 for the ZDF network."<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>Always <code>TRUE</code>, no error checking possible. It may be prudent to wait until two identical CNIs have been received.</dd></dl>
<dl class="since" compact><dt><b>Since:</b></dt><dd>0.2.20 </dd></dl>
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<a class="anchor" name="g8cd549b25532ae4c6aa4f32a9b1eaa96"></a><!-- doxytag: member="vps.h::vbi_encode_vps_cni" ref="g8cd549b25532ae4c6aa4f32a9b1eaa96" args="(uint8_t buffer[13], unsigned int cni) _vbi_nonnull((1))" -->
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<td class="memname">vbi_bool vbi_encode_vps_cni </td>
<td>(</td>
<td class="paramtype">uint8_t </td>
<td class="paramname"> <em>buffer</em>[13], </td>
</tr>
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<td class="paramkey"></td>
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<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>cni</em></td><td> </td>
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<td>)</td>
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<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>buffer</em> </td><td>VPS packet as defined for <code>VBI_SLICED_VPS</code>, i.e. 13 bytes without clock run-in and start code. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>cni</em> </td><td>CNI of type VBI_CNI_TYPE_VPS.</td></tr>
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Stores the 12 bit Country and Network Identifier <em>cni</em> in a VPS packet according to EN 300 231.<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd><code>FALSE</code> if <em>cni</em> is invalid. In this case <em>buffer</em> remains unmodified.</dd></dl>
<dl class="since" compact><dt><b>Since:</b></dt><dd>0.2.20 </dd></dl>
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distrib
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Mandriva
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2010.1
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x86_64
>
media
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main-release
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by-pkgid
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1af184c486f5d5f476d50602700ee0a0
>
files
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