classpwavfile.html

pwlib开发文档

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<a name="a0" doxytag="PWAVFile::RawRead"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PWAVFile::RawRead </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>buf</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>PINDEX&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>len</em></td>
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          <td class="md">)&nbsp;</td>
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<a name="a5" doxytag="PWAVFile::RawSetPosition"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PWAVFile::RawSetPosition </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">off_t&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>pos</em>, </td>
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          <td></td>
          <td class="md" nowrap><a class="el" href="classPFile.html#z133_0">FilePositionOrigin</a>&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>origin</em></td>
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          <td class="md">)&nbsp;</td>
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<a name="a1" doxytag="PWAVFile::RawWrite"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PWAVFile::RawWrite </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const void *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>buf</em>, </td>
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          <td></td>
          <td class="md" nowrap>PINDEX&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>len</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
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<a name="z495_0" doxytag="PWAVFile::Read"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PWAVFile::Read </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>buf</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>PINDEX&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>len</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Call <a class="el" href="classPFile.html#z129_1">PFile::Read()</a> to read in audio data and perform necessary processing such as byte-order swaping.
<p>
<dl compact><dt><b>Returns: </b></dt><dd>
 TRUE indicates that at least one character was read from the channel. FALSE means no bytes were read due to timeout or some other I/O error. </dl><dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>len</em>&nbsp;</td><td>
Pointer to a block of memory to receive the read bytes. Maximum number of bytes to read into the buffer. </td></tr>
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Reimplemented from <a class="el" href="classPFile.html#z129_1">PFile</a>.    </td>
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<a name="b2" doxytag="PWAVFile::SelectFormat"></a><p>
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          <td class="md" nowrap valign="top"> void PWAVFile::SelectFormat </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="classPString.html">PString</a> &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>format</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
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<a name="b1" doxytag="PWAVFile::SelectFormat"></a><p>
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          <td class="md" nowrap valign="top"> void PWAVFile::SelectFormat </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>fmt</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
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<a name="z497_14" doxytag="PWAVFile::SetAutoconvert"></a><p>
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          <td class="md" nowrap valign="top"> void PWAVFile::SetAutoconvert </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
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enable autoconversion between PCM-16 and the native format     </td>
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<a name="z497_5" doxytag="PWAVFile::SetChannels"></a><p>
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          <td class="md" nowrap valign="top"> virtual void PWAVFile::SetChannels </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>v</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<a name="z497_1" doxytag="PWAVFile::SetFormat"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PWAVFile::SetFormat </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="classPString.html">PString</a> &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>format</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<a name="z497_0" doxytag="PWAVFile::SetFormat"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PWAVFile::SetFormat </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>fmt</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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Find out the format of the WAV file. Eg 0x01 for PCM, 0x42 or 0x111 for G.723.1.     </td>
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<a name="a7" doxytag="PWAVFile::SetLastReadCount"></a><p>
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          <td class="md" nowrap valign="top"> void PWAVFile::SetLastReadCount </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">PINDEX&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>v</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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