TIFFBUFFER(3TIFF)                                            TIFFBUFFER(3TIFF)

NAME
       TIFFReadBufferSetup,  TIFFWriteBufferSetup - I/O buffering control rou-
       tines

SYNOPSIS
       #include <tiffio.h>

       int TIFFReadBufferSetup(TIFF *tif, tdata_t buffer, tsize_t size);
       int TIFFWriteBufferSetup(TIFF *tif, tdata_t buffer, tsize_t size);

DESCRIPTION
       The following routines are provided for client-control of the I/O  buf-
       fers  used  by the library. Applications need never use these routines;
       they are provided only for ``intelligent clients'' that wish  to  opti-
       mize  memory  usage and/or eliminate potential copy operations that can
       occur when working with images that have data stored  without  compres-
       sion.

       TIFFReadBufferSetup  sets up the data buffer used to read raw (encoded)
       data from a file. If the specified pointer is NULL (zero), then a  buf-
       fer  of  the  appropriate  size is allocated. Otherwise the caller must
       guarantee that the buffer is large enough to hold any individual  strip
       of raw data.  TIFFReadBufferSetup returns a non-zero value if the setup
       was successful and zero otherwise.

       TIFFWriteBufferSetup sets up the data buffer used  to  write  raw  (en-
       coded) data to a file. If the specified size is -1 then the buffer size
       is selected to hold a complete tile or strip, or at least 8  kilobytes,
       whichever  is  greater.  If the specified buffer is NULL (zero), then a
       buffer of the appropriate size is  dynamically  allocated.   TIFFWrite-
       BufferSetup  returns  a  non-zero value if the setup was successful and
       zero otherwise.

DIAGNOSTICS
       %s: No space for data buffer at scanline %ld.  TIFFReadBufferSetup  was
       unable to dynamically allocate space for a data buffer.

       %s: No space for output buffer.  TIFFWriteBufferSetup was unable to dy-
       namically allocate space for a data buffer.

SEE ALSO
       libtiff(3TIFF)

       Libtiff library home page: http://www.simplesystems.org/libtiff/

libtiff                        November 1, 2005              TIFFBUFFER(3TIFF)

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