src/tiff/html/man/TIFFbuffer.3tiff.html

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  11 <h1 align=center>TIFFBUFFER</h1>
  12 <a href="#NAME">NAME</a><br>
  13 <a href="#SYNOPSIS">SYNOPSIS</a><br>
  14 <a href="#DESCRIPTION">DESCRIPTION</a><br>
  15 <a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
  16 <a href="#SEE ALSO">SEE ALSO</a><br>
  17
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  19 <a name="NAME"></a>
  20 <h2>NAME</h2>
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  27 <p>TIFFReadBufferSetup, TIFFWriteBufferSetup &minus; I/O
  28 buffering control routines</p>
  29 </td>
  30 </table>
  31 <a name="SYNOPSIS"></a>
  32 <h2>SYNOPSIS</h2>
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  39 <pre><b>#include &lt;tiffio.h&gt;
  40
  41 int TIFFReadBufferSetup(TIFF *</b><i>tif</i><b>, tdata_t</b> <i>buffer</i><b>, tsize_t</b> <i>size</i><b>);
  42 int TIFFWriteBufferSetup(TIFF *</b><i>tif</i><b>, tdata_t</b> <i>buffer</i><b>, tsize_t</b> <i>size</i><b>);
  43 </b></pre>
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  46 <a name="DESCRIPTION"></a>
  47 <h2>DESCRIPTION</h2>
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  55 <p>The following routines are provided for client-control of
  56 the I/O buffers used by the library. Applications need never
  57 use these routines; they are provided only for
  58 &lsquo;&lsquo;intelligent clients&rsquo;&rsquo; that wish to
  59 optimize memory usage and/or eliminate potential copy
  60 operations that can occur when working with images that have
  61 data stored without compression.</p>
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  63 <p><i>TIFFReadBufferSetup</i> sets up the data buffer used
  64 to read raw (encoded) data from a file. If the specified
  65 pointer is <small>NULL</small> (zero), then a buffer of the
  66 appropriate size is allocated. Otherwise the caller must
  67 guarantee that the buffer is large enough to hold any
  68 individual strip of raw data. <i>TIFFReadBufferSetup</i>
  69 returns a non-zero value if the setup was successful and
  70 zero otherwise.</p>
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  72 <p><i>TIFFWriteBufferSetup</i> sets up the data buffer used
  73 to write raw (encoded) data to a file. If the specified
  74 <i>size</i> is &minus;1 then the buffer size is selected to
  75 hold a complete tile or strip, or at least 8 kilobytes,
  76 whichever is greater. If the specified <i>buffer</i> is
  77 <small>NULL</small> (zero), then a buffer of the appropriate
  78 size is dynamically allocated. <i>TIFFWriteBufferSetup</i>
  79 returns a non-zero value if the setup was successful and
  80 zero otherwise.</p>
  81 </td>
  82 </table>
  83 <a name="DIAGNOSTICS"></a>
  84 <h2>DIAGNOSTICS</h2>
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  91 <p><b>%s: No space for data buffer at scanline %ld</b>.
  92 <i>TIFFReadBufferSetup</i> was unable to dynamically
  93 allocate space for a data buffer.</p>
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  95 <p><b>%s: No space for output buffer</b>.
  96 <i>TIFFWriteBufferSetup</i> was unable to dynamically
  97 allocate space for a data buffer.</p>
  98 </td>
  99 </table>
 100 <a name="SEE ALSO"></a>
 101 <h2>SEE ALSO</h2>
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 108 <p><b>libtiff</b>(3TIFF)</p>
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 110 <p>Libtiff library home page:
 111 <b>http://www.remotesensing.org/libtiff/</b></p>
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