| #ifndef lint |
| static char rcsid[] = "$Header: /cvs/bao-parsec/ext/splash2x/apps/volrend/src/libtiff/tif_dumpmode.c,v 1.1.1.1 2012/03/29 17:22:43 uid42307 Exp $"; |
| #endif |
| |
| /* |
| * Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler |
| * Copyright (c) 1991, 1992 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. |
| */ |
| |
| /* |
| * TIFF Library. |
| * |
| * "Null" Compression Algorithm Support. |
| */ |
| #include "tiffioP.h" |
| #include <stdio.h> |
| #include <assert.h> |
| |
| #if USE_PROTOTYPES |
| static int DumpModeEncode(TIFF *, u_char *, int, u_int); |
| static int DumpModeDecode(TIFF *, u_char *, int, u_int); |
| static int DumpModeSeek(TIFF *, int); |
| #else |
| static int DumpModeEncode(), DumpModeDecode(), DumpModeSeek(); |
| #endif |
| |
| /* |
| * Initialize dump mode. |
| */ |
| TIFFInitDumpMode(tif) |
| register TIFF *tif; |
| { |
| tif->tif_decoderow = DumpModeDecode; |
| tif->tif_decodestrip = DumpModeDecode; |
| tif->tif_decodetile = DumpModeDecode; |
| tif->tif_encoderow = DumpModeEncode; |
| tif->tif_encodestrip = DumpModeEncode; |
| tif->tif_encodetile = DumpModeEncode; |
| tif->tif_seek = DumpModeSeek; |
| return (1); |
| } |
| |
| /* |
| * Encode a hunk of pixels. |
| */ |
| static int |
| DumpModeEncode(tif, pp, cc, s) |
| register TIFF *tif; |
| u_char *pp; |
| int cc; |
| u_int s; |
| { |
| /* |
| * This may be overzealous, but avoids having to |
| * worry about byte alignment for the (potential) |
| * byte-swapping work below. |
| */ |
| if (tif->tif_rawcc + cc > tif->tif_rawdatasize) |
| if (!TIFFFlushData1(tif)) |
| return (-1); |
| while (cc > 0) { |
| int n; |
| if ((n = cc) > tif->tif_rawdatasize) |
| n = tif->tif_rawdatasize; |
| bcopy(pp, tif->tif_rawcp, n); |
| if (tif->tif_flags & TIFF_SWAB) { |
| switch (tif->tif_dir.td_bitspersample) { |
| case 16: |
| assert((n & 3) == 0); |
| TIFFSwabArrayOfShort((u_short *)tif->tif_rawcp, |
| n/2); |
| break; |
| case 32: |
| assert((n & 15) == 0); |
| TIFFSwabArrayOfLong((u_long *)tif->tif_rawcp, |
| n/4); |
| break; |
| } |
| } |
| tif->tif_rawcp += n; |
| tif->tif_rawcc += n; |
| pp += n; |
| cc -= n; |
| if (tif->tif_rawcc >= tif->tif_rawdatasize && |
| !TIFFFlushData1(tif)) |
| return (-1); |
| } |
| return (1); |
| } |
| |
| /* |
| * Decode a hunk of pixels. |
| */ |
| static int |
| DumpModeDecode(tif, buf, cc, s) |
| register TIFF *tif; |
| u_char *buf; |
| int cc; |
| u_int s; |
| { |
| if (tif->tif_rawcc < cc) { |
| TIFFError(tif->tif_name, |
| "DumpModeDecode: Not enough data for scanline %d", |
| tif->tif_row); |
| return (0); |
| } |
| /* |
| * Avoid copy if client has setup raw |
| * data buffer to avoid extra copy. |
| */ |
| if (tif->tif_rawcp != (char*) buf) |
| bcopy(tif->tif_rawcp, buf, cc); |
| if (tif->tif_flags & TIFF_SWAB) { |
| switch (tif->tif_dir.td_bitspersample) { |
| case 16: |
| assert((cc & 3) == 0); |
| TIFFSwabArrayOfShort((u_short *)buf, cc/2); |
| break; |
| case 32: |
| assert((cc & 15) == 0); |
| TIFFSwabArrayOfLong((u_long *)buf, cc/4); |
| break; |
| } |
| } |
| tif->tif_rawcp += cc; |
| tif->tif_rawcc -= cc; |
| return (1); |
| } |
| |
| /* |
| * Seek forwards nrows in the current strip. |
| */ |
| static int |
| DumpModeSeek(tif, nrows) |
| register TIFF *tif; |
| int nrows; |
| { |
| tif->tif_rawcp += nrows * tif->tif_scanlinesize; |
| tif->tif_rawcc -= nrows * tif->tif_scanlinesize; |
| return (1); |
| } |