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15<title>TIFFBUFFER</title>
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19
20<h1 align=center>TIFFBUFFER</h1>
21
22<a href="#NAME">NAME</a><br>
23<a href="#SYNOPSIS">SYNOPSIS</a><br>
24<a href="#DESCRIPTION">DESCRIPTION</a><br>
25<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
26<a href="#SEE ALSO">SEE ALSO</a><br>
27
28<hr>
29
30
31<a name="NAME"></a>
32<h2>NAME</h2>
33
34
35
36<p style="margin-left:11%; margin-top: 1em">TIFFReadBufferSetup,
37TIFFWriteBufferSetup &minus; I/O buffering control
38routines</p>
39
40<a name="SYNOPSIS"></a>
41<h2>SYNOPSIS</h2>
42
43
44<p style="margin-left:11%; margin-top: 1em"><b>#include
45&lt;tiffio.h&gt;</b></p>
46
47<p style="margin-left:11%; margin-top: 1em"><b>int
48TIFFReadBufferSetup(TIFF *</b><i>tif</i><b>, tdata_t</b>
49<i>buffer</i><b>, tsize_t</b> <i>size</i><b>); <br>
50int TIFFWriteBufferSetup(TIFF *</b><i>tif</i><b>,
51tdata_t</b> <i>buffer</i><b>, tsize_t</b>
52<i>size</i><b>);</b></p>
53
54<a name="DESCRIPTION"></a>
55<h2>DESCRIPTION</h2>
56
57
58<p style="margin-left:11%; margin-top: 1em">The following
59routines are provided for client-control of the I/O buffers
60used by the library. Applications need never use these
61routines; they are provided only for
62&lsquo;&lsquo;intelligent clients&rsquo;&rsquo; that wish to
63optimize memory usage and/or eliminate potential copy
64operations that can occur when working with images that have
65data stored without compression.</p>
66
67
68<p style="margin-left:11%; margin-top: 1em"><i>TIFFReadBufferSetup</i>
69sets up the data buffer used to read raw (encoded) data from
70a file. If the specified pointer is <small>NULL</small>
71(zero), then a buffer of the appropriate size is allocated.
72Otherwise the caller must guarantee that the buffer is large
73enough to hold any individual strip of raw data.
74<i>TIFFReadBufferSetup</i> returns a non-zero value if the
75setup was successful and zero otherwise.</p>
76
77
78<p style="margin-left:11%; margin-top: 1em"><i>TIFFWriteBufferSetup</i>
79sets up the data buffer used to write raw (encoded) data to
80a file. If the specified <i>size</i> is &minus;1 then the
81buffer size is selected to hold a complete tile or strip, or
82at least 8 kilobytes, whichever is greater. If the specified
83<i>buffer</i> is <small>NULL</small> (zero), then a buffer
84of the appropriate size is dynamically allocated.
85<i>TIFFWriteBufferSetup</i> returns a non-zero value if the
86setup was successful and zero otherwise.</p>
87
88<a name="DIAGNOSTICS"></a>
89<h2>DIAGNOSTICS</h2>
90
91
92<p style="margin-left:11%; margin-top: 1em"><b>%s: No space
93for data buffer at scanline %ld</b>.
94<i>TIFFReadBufferSetup</i> was unable to dynamically
95allocate space for a data buffer.</p>
96
97<p style="margin-left:11%; margin-top: 1em"><b>%s: No space
98for output buffer</b>. <i>TIFFWriteBufferSetup</i> was
99unable to dynamically allocate space for a data buffer.</p>
100
101<a name="SEE ALSO"></a>
102<h2>SEE ALSO</h2>
103
104
105
106<p style="margin-left:11%; margin-top: 1em"><b>libtiff</b>(3TIFF)</p>
107
108<p style="margin-left:11%; margin-top: 1em">Libtiff library
109home page: <b>http://www.remotesensing.org/libtiff/</b></p>
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