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1 <html>
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3 <head>
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4 <title>libvorbis - function - vorbis_synthesis_headerin</title>
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5 <link rel=stylesheet href="style.css" type="text/css">
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6 </head>
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7
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8 <body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
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9 <table border=0 width=100%>
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10 <tr>
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11 <td><p class=tiny>libvorbis documentation</p></td>
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12 <td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
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13 </tr>
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14 </table>
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15
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16 <h1>vorbis_synthesis_headerin</h1>
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17
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18 <p><i>declared in "vorbis/codec.h";</i></p>
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19
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20 <p>This function decodes a header packet from a Vorbis stream and applies
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21 the contents to the given <a href="vorbis_info.html">vorbis_info</a>
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22 structure (to provide codec parameters to the decoder) and
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23 <a href="vorbis_comment.html">vorbis_comment</a> structure (to provide
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24 access to the embedded Vorbis comments).</p>
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25
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26 <p>Once the three Vorbis header packets (info, comments,
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27 and codebooks, in that order) have been passed to this
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28 function, the <a href="vorbis_info.html">vorbis_info</a>
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29 structure is ready to be used in a call to
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30 <a href="vorbis_synthesis_init.html">vorbis_synthesis_init</a>.</p>
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31
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32 <table border=0 color=black cellspacing=0 cellpadding=7>
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33 <tr bgcolor=#cccccc>
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34 <td>
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35 <pre><b>
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36 extern int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,
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37 ogg_packet *op);
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38 </b></pre>
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39 </td>
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40 </tr>
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41 </table>
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42
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43 <h3>Parameters</h3>
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44 <dl>
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45 <dt><i>vi</i></dt>
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46 <dd>The <a href="vorbis_info.html">vorbis_info</a> structure to apply
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47 the decoded information to.</dd>
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48 <dt><i>vc</i></dt>
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49 <dd>The <a href="vorbis_comment.html">vorbis_comment</a> structure to
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50 apply the decoded comments to.</dd>
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51 <dt><i>op</i></dt>
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52 <dd>The ogg_packet to decode.</dd>
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53 </dl>
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54
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55
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56 <h3>Return Values</h3>
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57 <blockquote>
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58 <li>0 on success.</li>
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59 <li>OV_ENOTVORBIS if the packet is not a Vorbis header packet.</li>
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60 <li>OV_EBADHEADER if there was an error interpreting the packet.</li>
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61 <li>OV_EFAULT on internal error.</li>
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62 </blockquote>
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63 <p>
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64
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65 <br><br>
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66 <hr noshade>
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67 <table border=0 width=100%>
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68 <tr valign=top>
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69 <td><p class=tiny>copyright © 2010 Xiph.Org</p></td>
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70 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a></p></td>
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71 </tr><tr>
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72 <td><p class=tiny>libvorbis documentation</p></td>
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73 <td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
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74 </tr>
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75 </table>
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76
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77
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78 </body>
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79
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80 </html>
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