TIFFbuffer(3)

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
       buffers  used  by  the  library. Applications need never use these rou-
       tines; they are provided only for ``intelligent clients'' that wish  to
       optimize  memory  usage and/or eliminate potential copy operations that
       can occur when working with images that have data stored  without  com-
       pression.

       TIFFReadBufferSetup  sets up the data buffer used to read raw (encoded)
       data from a file. If the specified  pointer  is  NULL  (zero),  then  a
       buffer  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
       (encoded)  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  kilo-
       bytes,  whichever  is  greater. If the specified buffer is NULL (zero),
       then a  buffer  of  the  appropriate  size  is  dynamically  allocated.
       TIFFWriteBufferSetup returns a non-zero value if the setup was success-
       ful 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
       dynamically allocate space for a data buffer.

SEE ALSO

       libtiff(3TIFF)

libtiff                        October 15, 1995              TIFFBUFFER(3TIFF)