classpwavfile.html

pwlib开发文档

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<a name="z497_3" doxytag="PWAVFile::GetFormatAsString"></a><p>
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          <td class="md" nowrap valign="top"> virtual <a class="el" href="classPString.html">PString</a> PWAVFile::GetFormatAsString </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<a name="z497_13" doxytag="PWAVFile::GetFormatString"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classPString.html">PString</a> PWAVFile::GetFormatString </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap> const<code> [inline]</code></td>
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Return a string that describes the WAV format     </td>
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<a name="z497_10" doxytag="PWAVFile::GetHeaderLength"></a><p>
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          <td class="md" nowrap valign="top"> off_t PWAVFile::GetHeaderLength </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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Find out the size of WAV header presented in the file.     </td>
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<a name="z495_6" doxytag="PWAVFile::GetPosition"></a><p>
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          <td class="md" nowrap valign="top"> virtual off_t PWAVFile::GetPosition </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Get the current active position in the file for the next read or write operation. The WAV header is excluded from calculation the position.
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<dl compact><dt><b>Returns: </b></dt><dd>
 current file position relative to the end of the WAV header. </dl>
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Reimplemented from <a class="el" href="classPFile.html#z133_8">PFile</a>.    </td>
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<a name="z497_6" doxytag="PWAVFile::GetSampleRate"></a><p>
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          <td class="md" nowrap valign="top"> virtual unsigned PWAVFile::GetSampleRate </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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Find out the sample rate of the WAV file in Hz.     </td>
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<a name="z497_8" doxytag="PWAVFile::GetSampleSize"></a><p>
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          <td class="md" nowrap valign="top"> virtual unsigned PWAVFile::GetSampleSize </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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Find out how may bits there are per sample, eg 8 or 16.     </td>
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<a name="z497_12" doxytag="PWAVFile::IsValid"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PWAVFile::IsValid </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap> const<code> [inline]</code></td>
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<p>
Determine if the WAV file is a valid wave file.
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<dl compact><dt><b>Returns: </b></dt><dd>
 TRUE indicates that the WAV file is valid FALSE indicates that the WAV file is invalid </dl>    </td>
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<a name="z495_3" doxytag="PWAVFile::Open"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PWAVFile::Open </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="classPFilePath.html">PFilePath</a> &amp;&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>name</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap><a class="el" href="classPFile.html#z125_0">OpenMode</a>&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>mode</em> = ReadWrite, </td>
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          <td></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>opts</em> = ModeDefault</td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Open the specified WAV file name in the specified mode and with the specified options. If the file object already has an open file then it is closed. This reads (and validates) the header for existing files. For new files, it creates a new file (and header) using the type of WAV file specified in the class constructor.
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Note: if mode# is StandardInput, StandardOutput or StandardError,  then the name# parameter is ignored.
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<dl compact><dt><b>Returns: </b></dt><dd>
 TRUE if the file was successfully opened. </dl>
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Reimplemented from <a class="el" href="classPFile.html#z133_4">PFile</a>.    </td>
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<a name="z495_2" doxytag="PWAVFile::Open"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PWAVFile::Open </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classPFile.html#z125_0">OpenMode</a>&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>mode</em> = ReadWrite, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>opts</em> = ModeDefault</td>
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          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Open the current file in the specified mode and with the specified options. If the file object already has an open file then it is closed.
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If there has not been a filename attached to the file object (via <a class="el" href="classPFile.html#z133_2">SetFilePath()</a>#, the name# parameter or a previous open) then a new unique temporary filename is generated.
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<dl compact><dt><b>Returns: </b></dt><dd>
 TRUE if the file was successfully opened. </dl>
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Reimplemented from <a class="el" href="classPFile.html#z133_3">PFile</a>.    </td>
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<a name="b3" doxytag="PWAVFile::ProcessHeader"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PWAVFile::ProcessHeader </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
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<a name="a6" doxytag="PWAVFile::RawGetDataLength"></a><p>
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          <td class="md" nowrap valign="top"> off_t PWAVFile::RawGetDataLength </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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<a name="a4" doxytag="PWAVFile::RawGetPosition"></a><p>
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          <td class="md" nowrap valign="top"> off_t PWAVFile::RawGetPosition </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>