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-rw-r--r--third_party/tiff_v403/tif_thunder.c208
1 files changed, 0 insertions, 208 deletions
diff --git a/third_party/tiff_v403/tif_thunder.c b/third_party/tiff_v403/tif_thunder.c
deleted file mode 100644
index e2d4ac0439..0000000000
--- a/third_party/tiff_v403/tif_thunder.c
+++ /dev/null
@@ -1,208 +0,0 @@
-/* $Id: tif_thunder.c,v 1.12 2011-04-02 20:54:09 bfriesen 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"
-#include <assert.h>
-#ifdef THUNDER_SUPPORT
-/*
- * TIFF Library.
- *
- * ThunderScan 4-bit Compression Algorithm Support
- */
-
-/*
- * ThunderScan uses an encoding scheme designed for
- * 4-bit pixel values. Data is encoded in bytes, with
- * each byte split into a 2-bit code word and a 6-bit
- * data value. The encoding gives raw data, runs of
- * pixels, or pixel values encoded as a delta from the
- * previous pixel value. For the latter, either 2-bit
- * or 3-bit delta values are used, with the deltas packed
- * into a single byte.
- */
-#define THUNDER_DATA 0x3f /* mask for 6-bit data */
-#define THUNDER_CODE 0xc0 /* mask for 2-bit code word */
-/* code values */
-#define THUNDER_RUN 0x00 /* run of pixels w/ encoded count */
-#define THUNDER_2BITDELTAS 0x40 /* 3 pixels w/ encoded 2-bit deltas */
-#define DELTA2_SKIP 2 /* skip code for 2-bit deltas */
-#define THUNDER_3BITDELTAS 0x80 /* 2 pixels w/ encoded 3-bit deltas */
-#define DELTA3_SKIP 4 /* skip code for 3-bit deltas */
-#define THUNDER_RAW 0xc0 /* raw data encoded */
-
-static const int twobitdeltas[4] = { 0, 1, 0, -1 };
-static const int threebitdeltas[8] = { 0, 1, 2, 3, 0, -3, -2, -1 };
-
-#define SETPIXEL(op, v) { \
- lastpixel = (v) & 0xf; \
- if ( npixels < maxpixels ) \
- { \
- if (npixels++ & 1) \
- *op++ |= lastpixel; \
- else \
- op[0] = (uint8) (lastpixel << 4); \
- } \
-}
-
-static int
-ThunderSetupDecode(TIFF* tif)
-{
- static const char module[] = "ThunderSetupDecode";
-
- if( tif->tif_dir.td_bitspersample != 4 )
- {
- TIFFErrorExt(tif->tif_clientdata, module,
- "Wrong bitspersample value (%d), Thunder decoder only supports 4bits per sample.",
- (int) tif->tif_dir.td_bitspersample );
- return 0;
- }
-
-
- return (1);
-}
-
-static int
-ThunderDecode(TIFF* tif, uint8* op, tmsize_t maxpixels)
-{
- static const char module[] = "ThunderDecode";
- register unsigned char *bp;
- register tmsize_t cc;
- unsigned int lastpixel;
- tmsize_t npixels;
-
- bp = (unsigned char *)tif->tif_rawcp;
- cc = tif->tif_rawcc;
- lastpixel = 0;
- npixels = 0;
- while (cc > 0 && npixels < maxpixels) {
- int n, delta;
-
- n = *bp++, cc--;
- switch (n & THUNDER_CODE) {
- case THUNDER_RUN: /* pixel run */
- /*
- * Replicate the last pixel n times,
- * where n is the lower-order 6 bits.
- */
- if (npixels & 1) {
- op[0] |= lastpixel;
- lastpixel = *op++; npixels++; n--;
- } else
- lastpixel |= lastpixel << 4;
- npixels += n;
- if (npixels < maxpixels) {
- for (; n > 0; n -= 2)
- *op++ = (uint8) lastpixel;
- }
- if (n == -1)
- *--op &= 0xf0;
- lastpixel &= 0xf;
- break;
- case THUNDER_2BITDELTAS: /* 2-bit deltas */
- if ((delta = ((n >> 4) & 3)) != DELTA2_SKIP)
- SETPIXEL(op, lastpixel + twobitdeltas[delta]);
- if ((delta = ((n >> 2) & 3)) != DELTA2_SKIP)
- SETPIXEL(op, lastpixel + twobitdeltas[delta]);
- if ((delta = (n & 3)) != DELTA2_SKIP)
- SETPIXEL(op, lastpixel + twobitdeltas[delta]);
- break;
- case THUNDER_3BITDELTAS: /* 3-bit deltas */
- if ((delta = ((n >> 3) & 7)) != DELTA3_SKIP)
- SETPIXEL(op, lastpixel + threebitdeltas[delta]);
- if ((delta = (n & 7)) != DELTA3_SKIP)
- SETPIXEL(op, lastpixel + threebitdeltas[delta]);
- break;
- case THUNDER_RAW: /* raw data */
- SETPIXEL(op, n);
- break;
- }
- }
- tif->tif_rawcp = (uint8*) bp;
- tif->tif_rawcc = cc;
- if (npixels != maxpixels) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
- TIFFErrorExt(tif->tif_clientdata, module,
- "%s data at scanline %lu (%I64u != %I64u)",
- npixels < maxpixels ? "Not enough" : "Too much",
- (unsigned long) tif->tif_row,
- (unsigned __int64) npixels,
- (unsigned __int64) maxpixels);
-#else
- TIFFErrorExt(tif->tif_clientdata, module,
- "%s data at scanline %lu (%llu != %llu)",
- npixels < maxpixels ? "Not enough" : "Too much",
- (unsigned long) tif->tif_row,
- (unsigned long long) npixels,
- (unsigned long long) maxpixels);
-#endif
- return (0);
- }
-
- return (1);
-}
-
-static int
-ThunderDecodeRow(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
-{
- static const char module[] = "ThunderDecodeRow";
- uint8* row = buf;
-
- (void) s;
- if (occ % tif->tif_scanlinesize)
- {
- TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
- return (0);
- }
- while (occ > 0) {
- if (!ThunderDecode(tif, row, tif->tif_dir.td_imagewidth))
- return (0);
- occ -= tif->tif_scanlinesize;
- row += tif->tif_scanlinesize;
- }
- return (1);
-}
-
-int
-TIFFInitThunderScan(TIFF* tif, int scheme)
-{
- (void) scheme;
-
- tif->tif_setupdecode = ThunderSetupDecode;
- tif->tif_decoderow = ThunderDecodeRow;
- tif->tif_decodestrip = ThunderDecodeRow;
- return (1);
-}
-#endif /* THUNDER_SUPPORT */
-
-/* vim: set ts=8 sts=8 sw=8 noet: */
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */
-
-
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