1TIFFReadTile(3TIFF) TIFFReadTile(3TIFF)
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6 TIFFReadTile - read and decode a tile of data from an open TIFF file
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9 #include <tiffio.h>
10 tsize_t TIFFReadTile(TIFF *tif, tdata_t buf, uint32_t x, uint32_t y,
12 uint32_t z, tsample_t sample)
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15 Return the data for the tile containing the specified coordinates. The
16 data placed in buf are returned decompressed and, typically, in the na‐
17 tive byte- and bit-ordering, but are otherwise packed (see further be‐
18 low). The buffer must be large enough to hold an entire tile of data.
19 Applications should call the routine TIFFTileSize to find out the size
20 (in bytes) of a tile buffer. The x and y parameters are always used by
21 TIFFReadTile. The z parameter is used if the image is deeper than 1
22 slice (ImageDepth>1). The sample parameter is used only if data are
23 organized in separate planes (PlanarConfiguration=2).
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26 The library attempts to hide bit- and byte-ordering differences between
27 the image and the native machine by converting data to the native ma‐
28 chine order. Bit reversal is done if the FillOrder tag is opposite to
29 the native machine bit order. 16- and 32-bit samples are automatically
30 byte-swapped if the file was written with a byte order opposite to the
31 native machine byte order,
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34 TIFFReadTile returns -1 if it detects an error; otherwise the number of
35 bytes in the decoded tile is returned.
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38 All error messages are directed to the TIFFError(3TIFF) routine.
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41 TIFFCheckTile(3TIFF), TIFFComputeTile(3TIFF), TIFFOpen(3TIFF), TIFF‐
42 ReadEncodedTile(3TIFF), TIFFReadRawTile(3TIFF), libtiff(3TIFF)
43 Libtiff library home page: http://www.simplesystems.org/libtiff/
45libtiff December 16, 1991 TIFFReadTile(3TIFF)