1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
<!-- Creator : groff version 1.18.1 -->
<!-- CreationDate: Fri Jul 13 17:43:16 2007 -->
<html>
<head>
<meta name="generator" content="groff -Thtml, see www.gnu.org">
<meta name="Content-Style" content="text/css">
<title>TIFFReadTile</title>
</head>
<body>
<h1 align=center>TIFFReadTile</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#NOTES">NOTES</a><br>
<a href="#RETURN VALUES">RETURN VALUES</a><br>
<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>TIFFReadTile − read and decode a tile of data from
an open <small>TIFF</small> file</p>
</td>
</table>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p><b>#include <tiffio.h></b></p>
<!-- INDENTATION -->
<p><b>tsize_t TIFFReadTile(TIFF *</b><i>tif</i><b>,
tdata_t</b> <i>buf</i><b>, uint32</b> <i>x</i><b>,
uint32</b> <i>y</i><b>, uint32</b> <i>z</i><b>,
tsample_t</b> <i>sample</i><b>)</b></p>
</td>
</table>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>Return the data for the tile <i>containing</i> the
specified coordinates. The data placed in <i>buf</i> are
returned decompressed and, typically, in the native byte-
and bit-ordering, but are otherwise packed (see further
below). The buffer must be large enough to hold an entire
tile of data. Applications should call the routine
<i>TIFFTileSize</i> to find out the size (in bytes) of a
tile buffer. The <i>x</i> and <i>y</i> parameters are always
used by <i>TIFFReadTile</i>. The <i>z</i> parameter is used
if the image is deeper than 1 slice
(<i>ImageDepth</i>>1). The <i>sample</i> parameter is
used only if data are organized in separate planes
(<i>PlanarConfiguration</i>=2).</p>
</td>
</table>
<a name="NOTES"></a>
<h2>NOTES</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>The library attempts to hide bit- and byte-ordering
differences between the image and the native machine by
converting data to the native machine order. Bit reversal is
done if the <i>FillOrder</i> tag is opposite to the native
machine bit order. 16- and 32-bit samples are automatically
byte-swapped if the file was written with a byte order
opposite to the native machine byte order,</p>
</td>
</table>
<a name="RETURN VALUES"></a>
<h2>RETURN VALUES</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p><i>TIFFReadTile</i> returns −1 if it detects an
error; otherwise the number of bytes in the decoded tile is
returned.</p>
</td>
</table>
<a name="DIAGNOSTICS"></a>
<h2>DIAGNOSTICS</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>All error messages are directed to the
<b>TIFFError</b>(3TIFF) routine.</p>
</td>
</table>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p><b>TIFFCheckTile</b>(3TIFF),
<b>TIFFComputeTile</b>(3TIFF), <b>TIFFOpen</b>(3TIFF),
<b>TIFFReadEncodedTile</b>(3TIFF),
<b>TIFFReadRawTile</b>(3TIFF), <b>libtiff</b>(3TIFF)</p>
<!-- INDENTATION -->
<p>Libtiff library home page:
<b>http://www.remotesensing.org/libtiff/</b></p>
</td>
</table>
<hr>
</body>
</html>
|
