src/tiff/man/TIFFstrip.3tiff

   1 .\" $Id: TIFFstrip.3tiff,v 1.2 2005-11-02 11:07:18 dron Exp $
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   3 .\" Copyright (c) 1992-1997 Sam Leffler
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  25 .if n .po 0
  26 .TH TIFFSTRIP 3TIFF "October 15, 1995" "libtiff"
  27 .SH NAME
  28 TIFFDefaultStripSize, TIFFStripSize, TIFFVStripSize, TIFFRawStripSize,
  29 TIFFComputeStrip, TIFFNumberOfStrips \- strip-related utility routines
  30 .SH SYNOPSIS
  31 .B "#include <tiffio.h>"
  32 .sp
  33 .BI "uint32 TIFFDefaultStripSize(TIFF *" tif ", uint32 " estimate ")"
  34 .br
  35 .BI "tsize_t TIFFStripSize(TIFF *" tif ")"
  36 .br
  37 .BI "tsize_t TIFFVStripSize(TIFF *" tif ", uint32 " nrows ")"
  38 .br
  39 .BI "tsize_t TIFFRawStripSize(TIFF *" tif ", tstrip_t " strip ")"
  40 .br
  41 .BI "tstrip_t TIFFComputeStrip(TIFF *" tif ", uint32 " row ", tsample_t " sample ")"
  42 .br
  43 .BI "tstrip_t TIFFNumberOfStrips(TIFF *" tif ")"
  44 .SH DESCRIPTION
  45 .I TIFFDefaultStripSize
  46 returns the number of rows for a reasonable-sized strip according to the
  47 current settings of the
  48 .IR ImageWidth ,
  49 .IR BitsPerSample ,
  50 .IR SamplesPerPixel ,
  51 tags and any compression-specific requirements. If the
  52 .I estimate
  53 parameter, if non-zero, then it is taken as an estimate of the desired strip
  54 size and adjusted according to any compression-specific requirements. The
  55 value returned by this function is typically used to define the
  56 .I RowsPerStrip
  57 tag. In lieu of any unusual requirements
  58 .I TIFFDefaultStripSize
  59 tries to create strips that have approximately
  60 8 kilobytes of uncompressed data.
  61 .PP
  62 .IR TIFFStripSize
  63 returns the equivalent size for a strip of data as it would be returned in a
  64 call to
  65 .IR TIFFReadEncodedStrip
  66 or as it would be expected in a call to
  67 .IR TIFFWriteEncodedStrip .
  68 .PP
  69 .I TIFFVStripSize
  70 returns the number of bytes in a strip with
  71 .I nrows
  72 rows of data.
  73 .PP
  74 .I TIFFRawStripSize
  75 returns the number of bytes in a raw strip (i.e. not decoded).
  76 .PP
  77 .IR TIFFComputeStrip
  78 returns the strip that contains the specified coordinates. A valid strip is
  79 always returned; out-of-range coordinate values are clamped to the bounds of
  80 the image. The
  81 .I row
  82 parameter is always used in calculating a strip. The
  83 .I sample
  84 parameter is used only if data are organized in separate planes (\c
  85 .IR PlanarConfiguration =2).
  86 .PP
  87 .IR TIFFNumberOfStrips
  88 returns the number of strips in the image.
  89 .SH DIAGNOSTICS
  90 None.
  91 .SH "SEE ALSO"
  92 .BR TIFFReadEncodedStrip (3TIFF),
  93 .BR TIFFReadRawStrip (3TIFF),
  94 .BR TIFFWriteEncodedStrip (3TIFF),
  95 .BR TIFFWriteRawStrip (3TIFF),
  96 .BR libtiff (3TIFF),
  97 .PP
  98 Libtiff library home page:
  99 .BR http://www.remotesensing.org/libtiff/