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TIFFTILE

NAME

SYNOPSIS

DESCRIPTION

DIAGNOSTICS

SEE ALSO

NAME

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TIFFTileSize, TIFFTileRowSize, TIFFVTileSize,

TIFFDefaultTileSize, TIFFComputeTile, TIFFCheckTile,

TIFFNumberOfTiles − tile-related utility routines

SYNOPSIS

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#include <tiffio.h>

void TIFFDefaultTileSize(TIFF *tif,

uint32 *tw, uint32 *th)

tsize_t TIFFTileSize(TIFF *tif)

tsize_t TIFFTileRowSize(TIFF *tif)

tsize_t TIFFVTileSize(TIFF *tif, uint32

nrows)

ttile_t TIFFComputeTile(TIFF *tif, uint32

x, uint32 y, uint32 z,

tsample_t sample)

int TIFFCheckTile(TIFF *tif, uint32

x, uint32 y, uint32 z,

tsample_t sample)

ttile_t TIFFNumberOfTiles(TIFF *tif)

DESCRIPTION

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TIFFDefaultTileSize returns the pixel width and

height of a reasonable-sized tile; suitable for setting up

the TileWidth and TileLength tags. If the

tw and th values passed in are non-zero, then

they are adjusted to reflect any compression-specific

requirements. The returned width and height are constrained

to be a multiple of 16 pixels to conform with the

<small>TIFF</small> specification.

TIFFTileSize returns the equivalent size for a

tile of data as it would be returned in a call to

TIFFReadTile or as it would be expected in a call to

TIFFWriteTile.

TIFFVTileSize returns the number of bytes in a

row-aligned tile with nrows of data.

TIFFTileRowSize returns the number of bytes of a

row of data in a tile.

TIFFComputeTile returns the tile that contains the

specified coordinates. A valid tile is always returned;

out-of-range coordinate values are clamped to the bounds of

the image. The x and y parameters are always

used in calculating a tile. The z parameter is used

if the image is deeper than 1 slice

(ImageDepth>1). The sample parameter is

used only if data are organized in separate planes

(PlanarConfiguration=2).

TIFFCheckTile returns a non-zero value if the

supplied coordinates are within the bounds of the image and

zero otherwise. The x parameter is checked against

the value of the ImageWidth tag. The y

parameter is checked against the value of the

ImageLength tag. The z parameter is checked

against the value of the ImageDepth tag (if defined).

The sample parameter is checked against the value of

the SamplesPerPixel parameter if the data are

organized in separate planes.

TIFFNumberOfTiles returns the number of tiles in

the image.

DIAGNOSTICS

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None.

SEE ALSO

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TIFFReadEncodedTile(3TIFF),

TIFFReadRawTile(3TIFF), TIFFReadTile(3TIFF),

TIFFWriteEncodedTile(3TIFF),

TIFFWriteRawTile(3TIFF), TIFFWriteTile(3TIFF),

libtiff(3TIFF)

Libtiff library home page:

http://www.remotesensing.org/libtiff/