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


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<h1 align=center>TIFFBUFFER</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>

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<h2>NAME</h2>
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<p>TIFFReadBufferSetup, TIFFWriteBufferSetup &minus; I/O
buffering control routines</p>
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<h2>SYNOPSIS</h2>
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<pre><b>#include &lt;tiffio.h&gt;

int TIFFReadBufferSetup(TIFF *</b><i>tif</i><b>, tdata_t</b> <i>buffer</i><b>, tsize_t</b> <i>size</i><b>);
int TIFFWriteBufferSetup(TIFF *</b><i>tif</i><b>, tdata_t</b> <i>buffer</i><b>, tsize_t</b> <i>size</i><b>);
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<h2>DESCRIPTION</h2>
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<p>The following routines are provided for client-control of
the I/O buffers used by the library. Applications need never
use these routines; they are provided only for
&lsquo;&lsquo;intelligent clients&rsquo;&rsquo; that wish to
optimize memory usage and/or eliminate potential copy
operations that can occur when working with images that have
data stored without compression.</p>
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<p><i>TIFFReadBufferSetup</i> sets up the data buffer used
to read raw (encoded) data from a file. If the specified
pointer is <small>NULL</small> (zero), then a buffer of the
appropriate size is allocated. Otherwise the caller must
guarantee that the buffer is large enough to hold any
individual strip of raw data. <i>TIFFReadBufferSetup</i>
returns a non-zero value if the setup was successful and
zero otherwise.</p>
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<p><i>TIFFWriteBufferSetup</i> sets up the data buffer used
to write raw (encoded) data to a file. If the specified
<i>size</i> is &minus;1 then the buffer size is selected to
hold a complete tile or strip, or at least 8 kilobytes,
whichever is greater. If the specified <i>buffer</i> is
<small>NULL</small> (zero), then a buffer of the appropriate
size is dynamically allocated. <i>TIFFWriteBufferSetup</i>
returns a non-zero value if the setup was successful and
zero otherwise.</p>
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<h2>DIAGNOSTICS</h2>
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<p><b>%s: No space for data buffer at scanline %ld</b>.
<i>TIFFReadBufferSetup</i> was unable to dynamically
allocate space for a data buffer.</p>
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<p><b>%s: No space for output buffer</b>.
<i>TIFFWriteBufferSetup</i> was unable to dynamically
allocate space for a data buffer.</p>
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<h2>SEE ALSO</h2>
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<p><b>libtiff</b>(3TIFF)</p>
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<p>Libtiff library home page:
<b>http://www.remotesensing.org/libtiff/</b></p>
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