diff options
Diffstat (limited to 'tiff/libtiff/tif_next.c')
| -rwxr-xr-x | tiff/libtiff/tif_next.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/tiff/libtiff/tif_next.c b/tiff/libtiff/tif_next.c deleted file mode 100755 index 17e0311..0000000 --- a/tiff/libtiff/tif_next.c +++ /dev/null @@ -1,181 +0,0 @@ -/* $Id: tif_next.c,v 1.16 2014-12-29 12:09:11 erouault Exp $ */ - -/* - * Copyright (c) 1988-1997 Sam Leffler - * Copyright (c) 1991-1997 Silicon Graphics, Inc. - * - * Permission to use, copy, modify, distribute, and sell this software and - * its documentation for any purpose is hereby granted without fee, provided - * that (i) the above copyright notices and this permission notice appear in - * all copies of the software and related documentation, and (ii) the names of - * Sam Leffler and Silicon Graphics may not be used in any advertising or - * publicity relating to the software without the specific, prior written - * permission of Sam Leffler and Silicon Graphics. - * - * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, - * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY - * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. - * - * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR - * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, - * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, - * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF - * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE - * OF THIS SOFTWARE. - */ - -#include "tiffiop.h" -#ifdef NEXT_SUPPORT -/* - * TIFF Library. - * - * NeXT 2-bit Grey Scale Compression Algorithm Support - */ - -#define SETPIXEL(op, v) { \ - switch (npixels++ & 3) { \ - case 0: op[0] = (unsigned char) ((v) << 6); break; \ - case 1: op[0] |= (v) << 4; break; \ - case 2: op[0] |= (v) << 2; break; \ - case 3: *op++ |= (v); break; \ - } \ -} - -#define LITERALROW 0x00 -#define LITERALSPAN 0x40 -#define WHITE ((1<<2)-1) - -static int -NeXTDecode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s) -{ - static const char module[] = "NeXTDecode"; - unsigned char *bp, *op; - tmsize_t cc; - uint8* row; - tmsize_t scanline, n; - - (void) s; - /* - * Each scanline is assumed to start off as all - * white (we assume a PhotometricInterpretation - * of ``min-is-black''). - */ - for (op = (unsigned char*) buf, cc = occ; cc-- > 0;) - *op++ = 0xff; - - bp = (unsigned char *)tif->tif_rawcp; - cc = tif->tif_rawcc; - scanline = tif->tif_scanlinesize; - if (occ % scanline) - { - TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read"); - return (0); - } - for (row = buf; cc > 0 && occ > 0; occ -= scanline, row += scanline) { - n = *bp++, cc--; - switch (n) { - case LITERALROW: - /* - * The entire scanline is given as literal values. - */ - if (cc < scanline) - goto bad; - _TIFFmemcpy(row, bp, scanline); - bp += scanline; - cc -= scanline; - break; - case LITERALSPAN: { - tmsize_t off; - /* - * The scanline has a literal span that begins at some - * offset. - */ - if( cc < 4 ) - goto bad; - off = (bp[0] * 256) + bp[1]; - n = (bp[2] * 256) + bp[3]; - if (cc < 4+n || off+n > scanline) - goto bad; - _TIFFmemcpy(row+off, bp+4, n); - bp += 4+n; - cc -= 4+n; - break; - } - default: { - uint32 npixels = 0, grey; - uint32 imagewidth = tif->tif_dir.td_imagewidth; - if( isTiled(tif) ) - imagewidth = tif->tif_dir.td_tilewidth; - - /* - * The scanline is composed of a sequence of constant - * color ``runs''. We shift into ``run mode'' and - * interpret bytes as codes of the form - * <color><npixels> until we've filled the scanline. - */ - op = row; - for (;;) { - grey = (uint32)((n>>6) & 0x3); - n &= 0x3f; - /* - * Ensure the run does not exceed the scanline - * bounds, potentially resulting in a security - * issue. - */ - while (n-- > 0 && npixels < imagewidth) - SETPIXEL(op, grey); - if (npixels >= imagewidth) - break; - if (cc == 0) - goto bad; - n = *bp++, cc--; - } - break; - } - } - } - tif->tif_rawcp = (uint8*) bp; - tif->tif_rawcc = cc; - return (1); -bad: - TIFFErrorExt(tif->tif_clientdata, module, "Not enough data for scanline %ld", - (long) tif->tif_row); - return (0); -} - -static int -NeXTPreDecode(TIFF* tif, uint16 s) -{ - static const char module[] = "NeXTPreDecode"; - TIFFDirectory *td = &tif->tif_dir; - (void)s; - - if( td->td_bitspersample != 2 ) - { - TIFFErrorExt(tif->tif_clientdata, module, "Unsupported BitsPerSample = %d", - td->td_bitspersample); - return (0); - } - return (1); -} - -int -TIFFInitNeXT(TIFF* tif, int scheme) -{ - (void) scheme; - tif->tif_predecode = NeXTPreDecode; - tif->tif_decoderow = NeXTDecode; - tif->tif_decodestrip = NeXTDecode; - tif->tif_decodetile = NeXTDecode; - return (1); -} -#endif /* NEXT_SUPPORT */ - -/* vim: set ts=8 sts=8 sw=8 noet: */ -/* - * Local Variables: - * mode: c - * c-basic-offset: 8 - * fill-column: 78 - * End: - */ |