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2003.11.06 04:30 "TIFFRawStripSize function", by Chris Hanson
As part of what I'm working on, I needed a function to get the size in bytes of a raw strip. I figure that others would find this useful too, so I'm contributing it. I've appended a couple context diffs from the latest CVS, of the libtiff/tiffio.h and libtiff/tif_strip.c files. -- Chris -- Chris Hanson, bDistributed.com, Inc. | Email: cmh@bDistributed.com Outsourcing Vendor Evaluation | Phone: +1-847-372-3955 Custom Mac OS X Development | Fax: +1-847-589-3738 http://bdistributed.com/ | Personal Email: cmh@mac.com Index: libtiff/tiffio.h =================================================================== RCS file: /cvsroot/osrs/libtiff/libtiff/tiffio.h,v retrieving revision 1.17 diff -c -r1.17 tiffio.h *** libtiff/tiffio.h 7 Oct 2003 06:19:21 -0000 1.17 --- libtiff/tiffio.h 6 Nov 2003 04:28:43 -0000 *************** *** 244,249 **** --- 244,250 ---- extern tsize_t TIFFScanlineSize(TIFF*); extern tsize_t TIFFRasterScanlineSize(TIFF*); extern tsize_t TIFFStripSize(TIFF*); + extern tsize_t TIFFRawStripSize(TIFF* tif, tstrip_t strip); extern tsize_t TIFFVStripSize(TIFF*, uint32); extern tsize_t TIFFTileRowSize(TIFF*); extern tsize_t TIFFTileSize(TIFF*); Index: libtiff/tif_strip.c =================================================================== RCS file: /cvsroot/osrs/libtiff/libtiff/tif_strip.c,v retrieving revision 1.2 diff -c -r1.2 tif_strip.c *** libtiff/tif_strip.c 31 Jul 2002 21:05:57 -0000 1.2 --- libtiff/tif_strip.c 6 Nov 2003 04:28:43 -0000 *************** *** 112,117 **** --- 112,136 ---- } /* + * Compute the # bytes in a raw strip. + */ + tsize_t + TIFFRawStripSize(TIFF* tif, tstrip_t strip) + { + TIFFDirectory* td = &tif->tif_dir; + tsize_t bytecount = td->td_stripbytecount[strip]; + + if (bytecount <= 0) { + TIFFError(tif->tif_name, + "%lu: Invalid strip byte count, strip %lu", + (u_long) bytecount, (u_long) strip); + bytecount = (tsize_t) -1; + } + + return bytecount; + } + + /* * Compute the # bytes in a (row-aligned) strip. * * Note that if RowsPerStrip is larger than the