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-rw-r--r--src/3rdparty/libtiff/libtiff/tif_thunder.c281
1 files changed, 141 insertions, 140 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_thunder.c b/src/3rdparty/libtiff/libtiff/tif_thunder.c
index 3e703d8..1f97362 100644
--- a/src/3rdparty/libtiff/libtiff/tif_thunder.c
+++ b/src/3rdparty/libtiff/libtiff/tif_thunder.c
@@ -2,23 +2,23 @@
* Copyright (c) 1988-1997 Sam Leffler
* Copyright (c) 1991-1997 Silicon Graphics, Inc.
*
- * Permission to use, copy, modify, distribute, and sell this software and
+ * 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.
- *
+ *
+ * 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
+ * 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.
*/
@@ -41,157 +41,158 @@
* 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 */
+#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 */
+#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 };
+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_t) (lastpixel << 4); \
- } \
-}
+#define SETPIXEL(op, v) \
+ { \
+ lastpixel = (v)&0xf; \
+ if (npixels < maxpixels) \
+ { \
+ if (npixels++ & 1) \
+ *op++ |= lastpixel; \
+ else \
+ op[0] = (uint8_t)(lastpixel << 4); \
+ } \
+ }
-static int
-ThunderSetupDecode(TIFF* tif)
+static int ThunderSetupDecode(TIFF *tif)
{
- static const char module[] = "ThunderSetupDecode";
+ 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;
- }
-
+ if (tif->tif_dir.td_bitspersample != 4)
+ {
+ TIFFErrorExtR(tif, module,
+ "Wrong bitspersample value (%d), Thunder decoder only "
+ "supports 4bits per sample.",
+ (int)tif->tif_dir.td_bitspersample);
+ return 0;
+ }
- return (1);
+ return (1);
}
-static int
-ThunderDecode(TIFF* tif, uint8_t* op, tmsize_t maxpixels)
+static int ThunderDecode(TIFF *tif, uint8_t *op, tmsize_t maxpixels)
{
- static const char module[] = "ThunderDecode";
- register unsigned char *bp;
- register tmsize_t cc;
- unsigned int lastpixel;
- tmsize_t npixels;
+ 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;
+ 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_t) lastpixel;
- }
- if (n == -1)
- *--op &= 0xf0;
- lastpixel &= 0xf;
- break;
- case THUNDER_2BITDELTAS: /* 2-bit deltas */
- if ((delta = ((n >> 4) & 3)) != DELTA2_SKIP)
- SETPIXEL(op, (unsigned)((int)lastpixel + twobitdeltas[delta]));
- if ((delta = ((n >> 2) & 3)) != DELTA2_SKIP)
- SETPIXEL(op, (unsigned)((int)lastpixel + twobitdeltas[delta]));
- if ((delta = (n & 3)) != DELTA2_SKIP)
- SETPIXEL(op, (unsigned)((int)lastpixel + twobitdeltas[delta]));
- break;
- case THUNDER_3BITDELTAS: /* 3-bit deltas */
- if ((delta = ((n >> 3) & 7)) != DELTA3_SKIP)
- SETPIXEL(op, (unsigned)((int)lastpixel + threebitdeltas[delta]));
- if ((delta = (n & 7)) != DELTA3_SKIP)
- SETPIXEL(op, (unsigned)((int)lastpixel + threebitdeltas[delta]));
- break;
- case THUNDER_RAW: /* raw data */
- SETPIXEL(op, n);
- break;
- }
- }
- tif->tif_rawcp = (uint8_t*) bp;
- tif->tif_rawcc = cc;
- if (npixels != maxpixels) {
- TIFFErrorExt(tif->tif_clientdata, module,
- "%s data at scanline %lu (%"PRIu64" != %"PRIu64")",
- npixels < maxpixels ? "Not enough" : "Too much",
- (unsigned long) tif->tif_row,
- (uint64_t) npixels,
- (uint64_t) maxpixels);
- return (0);
- }
+ 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_t)lastpixel;
+ }
+ if (n == -1)
+ *--op &= 0xf0;
+ lastpixel &= 0xf;
+ break;
+ case THUNDER_2BITDELTAS: /* 2-bit deltas */
+ if ((delta = ((n >> 4) & 3)) != DELTA2_SKIP)
+ SETPIXEL(op,
+ (unsigned)((int)lastpixel + twobitdeltas[delta]));
+ if ((delta = ((n >> 2) & 3)) != DELTA2_SKIP)
+ SETPIXEL(op,
+ (unsigned)((int)lastpixel + twobitdeltas[delta]));
+ if ((delta = (n & 3)) != DELTA2_SKIP)
+ SETPIXEL(op,
+ (unsigned)((int)lastpixel + twobitdeltas[delta]));
+ break;
+ case THUNDER_3BITDELTAS: /* 3-bit deltas */
+ if ((delta = ((n >> 3) & 7)) != DELTA3_SKIP)
+ SETPIXEL(
+ op, (unsigned)((int)lastpixel + threebitdeltas[delta]));
+ if ((delta = (n & 7)) != DELTA3_SKIP)
+ SETPIXEL(
+ op, (unsigned)((int)lastpixel + threebitdeltas[delta]));
+ break;
+ case THUNDER_RAW: /* raw data */
+ SETPIXEL(op, n);
+ break;
+ }
+ }
+ tif->tif_rawcp = (uint8_t *)bp;
+ tif->tif_rawcc = cc;
+ if (npixels != maxpixels)
+ {
+ TIFFErrorExtR(tif, module,
+ "%s data at scanline %lu (%" PRIu64 " != %" PRIu64 ")",
+ npixels < maxpixels ? "Not enough" : "Too much",
+ (unsigned long)tif->tif_row, (uint64_t)npixels,
+ (uint64_t)maxpixels);
+ return (0);
+ }
- return (1);
+ return (1);
}
-static int
-ThunderDecodeRow(TIFF* tif, uint8_t* buf, tmsize_t occ, uint16_t s)
+static int ThunderDecodeRow(TIFF *tif, uint8_t *buf, tmsize_t occ, uint16_t s)
{
- static const char module[] = "ThunderDecodeRow";
- uint8_t* 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);
+ static const char module[] = "ThunderDecodeRow";
+ uint8_t *row = buf;
+
+ (void)s;
+ if (occ % tif->tif_scanlinesize)
+ {
+ TIFFErrorExtR(tif, 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)
+int TIFFInitThunderScan(TIFF *tif, int scheme)
{
- (void) scheme;
+ (void)scheme;
- tif->tif_setupdecode = ThunderSetupDecode;
- tif->tif_decoderow = ThunderDecodeRow;
- tif->tif_decodestrip = ThunderDecodeRow;
- return (1);
+ 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:
- */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-21 13:45:04 +0000