XFA: Upgrade to libtiff 4.0.6.

third_party/tiff_v403/tif_predict.c

Index: third_party/tiff_v403/tif_predict.c
diff --git a/third_party/tiff_v403/tif_predict.c b/third_party/tiff_v403/tif_predict.c
deleted file mode 100644
index a34faf0a7009ef61700747ed223e1cc041cf1e9f..0000000000000000000000000000000000000000
--- a/third_party/tiff_v403/tif_predict.c
+++ /dev/null
@@ -1,811 +0,0 @@
-/* $Id: tif_predict.c,v 1.32 2010-03-10 18:56:49 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.
- */
-
-/*
- * TIFF Library.
- *
- * Predictor Tag Support (used by multiple codecs).
- */
-#include "tiffiop.h"
-#include "tif_predict.h"
-
-#define	PredictorState(tif)	((TIFFPredictorState*) (tif)->tif_data)
-
-static void horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc);
-static int PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
-static int PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
-static int PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
-static int PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s);
-
-static int
-PredictorSetup(TIFF* tif)
-{
-	static const char module[] = "PredictorSetup";
-
-	TIFFPredictorState* sp = PredictorState(tif);
-	TIFFDirectory* td = &tif->tif_dir;
-
-	switch (sp->predictor)		/* no differencing */
-	{
-		case PREDICTOR_NONE:
-			return 1;
-		case PREDICTOR_HORIZONTAL:
-			if (td->td_bitspersample != 8
-			    && td->td_bitspersample != 16
-			    && td->td_bitspersample != 32) {
-				TIFFErrorExt(tif->tif_clientdata, module,
-				    "Horizontal differencing \"Predictor\" not supported with %d-bit samples",
-				    td->td_bitspersample);
-				return 0;
-			}
-			break;
-		case PREDICTOR_FLOATINGPOINT:
-			if (td->td_sampleformat != SAMPLEFORMAT_IEEEFP) {
-				TIFFErrorExt(tif->tif_clientdata, module,
-				    "Floating point \"Predictor\" not supported with %d data format",
-				    td->td_sampleformat);
-				return 0;
-			}
-			break;
-		default:
-			TIFFErrorExt(tif->tif_clientdata, module,
-			    "\"Predictor\" value %d not supported",
-			    sp->predictor);
-			return 0;
-	}
-	sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
-	    td->td_samplesperpixel : 1);
-	/*
-	 * Calculate the scanline/tile-width size in bytes.
-	 */
-	if (isTiled(tif))
-		sp->rowsize = TIFFTileRowSize(tif);
-	else
-		sp->rowsize = TIFFScanlineSize(tif);
-	if (sp->rowsize == 0)
-		return 0;
-
-	return 1;
-}
-
-static int
-PredictorSetupDecode(TIFF* tif)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	TIFFDirectory* td = &tif->tif_dir;
-
-	if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
-		return 0;
-
-	if (sp->predictor == 2) {
-		switch (td->td_bitspersample) {
-			case 8:  sp->decodepfunc = horAcc8; break;
-			case 16: sp->decodepfunc = horAcc16; break;
-			case 32: sp->decodepfunc = horAcc32; break;
-		}
-		/*
-		 * Override default decoding method with one that does the
-		 * predictor stuff.
-		 */
-                if( tif->tif_decoderow != PredictorDecodeRow )
-                {
-                    sp->decoderow = tif->tif_decoderow;
-                    tif->tif_decoderow = PredictorDecodeRow;
-                    sp->decodestrip = tif->tif_decodestrip;
-                    tif->tif_decodestrip = PredictorDecodeTile;
-                    sp->decodetile = tif->tif_decodetile;
-                    tif->tif_decodetile = PredictorDecodeTile;
-                }
-
-		/*
-		 * If the data is horizontally differenced 16-bit data that
-		 * requires byte-swapping, then it must be byte swapped before
-		 * the accumulation step.  We do this with a special-purpose
-		 * routine and override the normal post decoding logic that
-		 * the library setup when the directory was read.
-		 */
-		if (tif->tif_flags & TIFF_SWAB) {
-			if (sp->decodepfunc == horAcc16) {
-				sp->decodepfunc = swabHorAcc16;
-				tif->tif_postdecode = _TIFFNoPostDecode;
-            } else if (sp->decodepfunc == horAcc32) {
-				sp->decodepfunc = swabHorAcc32;
-				tif->tif_postdecode = _TIFFNoPostDecode;
-            }
-		}
-	}
-
-	else if (sp->predictor == 3) {
-		sp->decodepfunc = fpAcc;
-		/*
-		 * Override default decoding method with one that does the
-		 * predictor stuff.
-		 */
-                if( tif->tif_decoderow != PredictorDecodeRow )
-                {
-                    sp->decoderow = tif->tif_decoderow;
-                    tif->tif_decoderow = PredictorDecodeRow;
-                    sp->decodestrip = tif->tif_decodestrip;
-                    tif->tif_decodestrip = PredictorDecodeTile;
-                    sp->decodetile = tif->tif_decodetile;
-                    tif->tif_decodetile = PredictorDecodeTile;
-                }
-		/*
-		 * The data should not be swapped outside of the floating
-		 * point predictor, the accumulation routine should return
-		 * byres in the native order.
-		 */
-		if (tif->tif_flags & TIFF_SWAB) {
-			tif->tif_postdecode = _TIFFNoPostDecode;
-		}
-		/*
-		 * Allocate buffer to keep the decoded bytes before
-		 * rearranging in the ight order
-		 */
-	}
-
-	return 1;
-}
-
-static int
-PredictorSetupEncode(TIFF* tif)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	TIFFDirectory* td = &tif->tif_dir;
-
-	if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
-		return 0;
-
-	if (sp->predictor == 2) {
-		switch (td->td_bitspersample) {
-			case 8:  sp->encodepfunc = horDiff8; break;
-			case 16: sp->encodepfunc = horDiff16; break;
-			case 32: sp->encodepfunc = horDiff32; break;
-		}
-		/*
-		 * Override default encoding method with one that does the
-		 * predictor stuff.
-		 */
-                if( tif->tif_encoderow != PredictorEncodeRow )
-                {
-                    sp->encoderow = tif->tif_encoderow;
-                    tif->tif_encoderow = PredictorEncodeRow;
-                    sp->encodestrip = tif->tif_encodestrip;
-                    tif->tif_encodestrip = PredictorEncodeTile;
-                    sp->encodetile = tif->tif_encodetile;
-                    tif->tif_encodetile = PredictorEncodeTile;
-                }
-	}
-
-	else if (sp->predictor == 3) {
-		sp->encodepfunc = fpDiff;
-		/*
-		 * Override default encoding method with one that does the
-		 * predictor stuff.
-		 */
-                if( tif->tif_encoderow != PredictorEncodeRow )
-                {
-                    sp->encoderow = tif->tif_encoderow;
-                    tif->tif_encoderow = PredictorEncodeRow;
-                    sp->encodestrip = tif->tif_encodestrip;
-                    tif->tif_encodestrip = PredictorEncodeTile;
-                    sp->encodetile = tif->tif_encodetile;
-                    tif->tif_encodetile = PredictorEncodeTile;
-                }
-	}
-
-	return 1;
-}
-
-#define REPEAT4(n, op)		\
-    switch (n) {		\
-    default: { tmsize_t i; for (i = n-4; i > 0; i--) { op; } } \
-    case 4:  op;		\
-    case 3:  op;		\
-    case 2:  op;		\
-    case 1:  op;		\
-    case 0:  ;			\
-    }
-
-static void
-horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	/*
-	 * compare v4.0.3 with v3.9.5, 
-	 * we find that horAcc8 uses while loop in the v4.0.3 and uses do while loop in the v3.9.5.
-	 * times of do while loop are less than while loop, so we use v3.9.5 instead of v4.0.3.
-	 */
-#if 0
-	tmsize_t stride = PredictorState(tif)->stride;
-
-	char* cp = (char*) cp0;
-	assert((cc%stride)==0);
-	if (cc > stride) {
-		/*
-		 * Pipeline the most common cases.
-		 */
-		if (stride == 3)  {
-			unsigned int cr = cp[0];
-			unsigned int cg = cp[1];
-			unsigned int cb = cp[2];
-			cc -= 3;
-			cp += 3;
-			while (cc>0) {
-				cp[0] = (char) (cr += cp[0]);
-				cp[1] = (char) (cg += cp[1]);
-				cp[2] = (char) (cb += cp[2]);
-				cc -= 3;
-				cp += 3;
-			}
-		} else if (stride == 4)  {
-			unsigned int cr = cp[0];
-			unsigned int cg = cp[1];
-			unsigned int cb = cp[2];
-			unsigned int ca = cp[3];
-			cc -= 4;
-			cp += 4;
-			while (cc>0) {
-				cp[0] = (char) (cr += cp[0]);
-				cp[1] = (char) (cg += cp[1]);
-				cp[2] = (char) (cb += cp[2]);
-				cp[3] = (char) (ca += cp[3]);
-				cc -= 4;
-				cp += 4;
-			}
-		} else  {
-			cc -= stride;
-			do {
-				REPEAT4(stride, cp[stride] =
-					(char) (cp[stride] + *cp); cp++)
-				cc -= stride;
-			} while (cc>0);
-		}
-	}
-#else
-	tsize_t stride = PredictorState(tif)->stride;
-
-	char* cp = (char*) cp0;
-	if (cc > stride) {
-		cc -= stride;
-		/*
-		 * Pipeline the most common cases.
-		 */
-		if (stride == 3)  {
-			unsigned int cr = cp[0];
-			unsigned int cg = cp[1];
-			unsigned int cb = cp[2];
-			do {
-				cc -= 3, cp += 3;
-				cp[0] = (char) (cr += cp[0]);
-				cp[1] = (char) (cg += cp[1]);
-				cp[2] = (char) (cb += cp[2]);
-			} while ((int32) cc > 0);
-		} else if (stride == 4)  {
-			unsigned int cr = cp[0];
-			unsigned int cg = cp[1];
-			unsigned int cb = cp[2];
-			unsigned int ca = cp[3];
-			do {
-				cc -= 4, cp += 4;
-				cp[0] = (char) (cr += cp[0]);
-				cp[1] = (char) (cg += cp[1]);
-				cp[2] = (char) (cb += cp[2]);
-				cp[3] = (char) (ca += cp[3]);
-			} while ((int32) cc > 0);
-		} else  {
-			do {
-				REPEAT4(stride, cp[stride] =
-					(char) (cp[stride] + *cp); cp++)
-				cc -= stride;
-			} while ((int32) cc > 0);
-		}
-	}
-#endif
-}
-
-static void
-swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	tmsize_t stride = PredictorState(tif)->stride;
-	uint16* wp = (uint16*) cp0;
-	tmsize_t wc = cc / 2;
-
-	assert((cc%(2*stride))==0);
-
-	if (wc > stride) {
-		TIFFSwabArrayOfShort(wp, wc);
-		wc -= stride;
-		do {
-			REPEAT4(stride, wp[stride] += wp[0]; wp++)
-			wc -= stride;
-		} while (wc > 0);
-	}
-}
-
-static void
-horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	tmsize_t stride = PredictorState(tif)->stride;
-	uint16* wp = (uint16*) cp0;
-	tmsize_t wc = cc / 2;
-
-	assert((cc%(2*stride))==0);
-
-	if (wc > stride) {
-		wc -= stride;
-		do {
-			REPEAT4(stride, wp[stride] += wp[0]; wp++)
-			wc -= stride;
-		} while (wc > 0);
-	}
-}
-
-static void
-swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	tmsize_t stride = PredictorState(tif)->stride;
-	uint32* wp = (uint32*) cp0;
-	tmsize_t wc = cc / 4;
-
-	assert((cc%(4*stride))==0);
-
-	if (wc > stride) {
-		TIFFSwabArrayOfLong(wp, wc);
-		wc -= stride;
-		do {
-			REPEAT4(stride, wp[stride] += wp[0]; wp++)
-			wc -= stride;
-		} while (wc > 0);
-	}
-}
-
-static void
-horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	tmsize_t stride = PredictorState(tif)->stride;
-	uint32* wp = (uint32*) cp0;
-	tmsize_t wc = cc / 4;
-
-	assert((cc%(4*stride))==0);
-
-	if (wc > stride) {
-		wc -= stride;
-		do {
-			REPEAT4(stride, wp[stride] += wp[0]; wp++)
-			wc -= stride;
-		} while (wc > 0);
-	}
-}
-
-/*
- * Floating point predictor accumulation routine.
- */
-static void
-fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	tmsize_t stride = PredictorState(tif)->stride;
-	uint32 bps = tif->tif_dir.td_bitspersample / 8;
-	tmsize_t wc = cc / bps;
-	tmsize_t count = cc;
-	uint8 *cp = (uint8 *) cp0;
-	uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
-
-	assert((cc%(bps*stride))==0);
-
-	if (!tmp)
-		return;
-
-	while (count > stride) {
-		REPEAT4(stride, cp[stride] += cp[0]; cp++)
-		count -= stride;
-	}
-
-	_TIFFmemcpy(tmp, cp0, cc);
-	cp = (uint8 *) cp0;
-	for (count = 0; count < wc; count++) {
-		uint32 byte;
-		for (byte = 0; byte < bps; byte++) {
-			#if WORDS_BIGENDIAN
-			cp[bps * count + byte] = tmp[byte * wc + count];
-			#else
-			cp[bps * count + byte] =
-				tmp[(bps - byte - 1) * wc + count];
-			#endif
-		}
-	}
-	_TIFFfree(tmp);
-}
-
-/*
- * Decode a scanline and apply the predictor routine.
- */
-static int
-PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->decoderow != NULL);
-	assert(sp->decodepfunc != NULL);  
-
-	if ((*sp->decoderow)(tif, op0, occ0, s)) {
-		(*sp->decodepfunc)(tif, op0, occ0);
-		return 1;
-	} else
-		return 0;
-}
-
-/*
- * Decode a tile/strip and apply the predictor routine.
- * Note that horizontal differencing must be done on a
- * row-by-row basis.  The width of a "row" has already
- * been calculated at pre-decode time according to the
- * strip/tile dimensions.
- */
-static int
-PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->decodetile != NULL);
-
-	if ((*sp->decodetile)(tif, op0, occ0, s)) {
-		tmsize_t rowsize = sp->rowsize;
-		assert(rowsize > 0);
-		assert((occ0%rowsize)==0);
-		assert(sp->decodepfunc != NULL);
-		while (occ0 > 0) {
-			(*sp->decodepfunc)(tif, op0, rowsize);
-			occ0 -= rowsize;
-			op0 += rowsize;
-		}
-		return 1;
-	} else
-		return 0;
-}
-
-static void
-horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tmsize_t stride = sp->stride;
-	char* cp = (char*) cp0;
-
-	assert((cc%stride)==0);
-
-	if (cc > stride) {
-		cc -= stride;
-		/*
-		 * Pipeline the most common cases.
-		 */
-		if (stride == 3) {
-			int r1, g1, b1;
-			int r2 = cp[0];
-			int g2 = cp[1];
-			int b2 = cp[2];
-			do {
-				r1 = cp[3]; cp[3] = r1-r2; r2 = r1;
-				g1 = cp[4]; cp[4] = g1-g2; g2 = g1;
-				b1 = cp[5]; cp[5] = b1-b2; b2 = b1;
-				cp += 3;
-			} while ((cc -= 3) > 0);
-		} else if (stride == 4) {
-			int r1, g1, b1, a1;
-			int r2 = cp[0];
-			int g2 = cp[1];
-			int b2 = cp[2];
-			int a2 = cp[3];
-			do {
-				r1 = cp[4]; cp[4] = r1-r2; r2 = r1;
-				g1 = cp[5]; cp[5] = g1-g2; g2 = g1;
-				b1 = cp[6]; cp[6] = b1-b2; b2 = b1;
-				a1 = cp[7]; cp[7] = a1-a2; a2 = a1;
-				cp += 4;
-			} while ((cc -= 4) > 0);
-		} else {
-			cp += cc - 1;
-			do {
-				REPEAT4(stride, cp[stride] -= cp[0]; cp--)
-			} while ((cc -= stride) > 0);
-		}
-	}
-}
-
-static void
-horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tmsize_t stride = sp->stride;
-	int16 *wp = (int16*) cp0;
-	tmsize_t wc = cc/2;
-
-	assert((cc%(2*stride))==0);
-
-	if (wc > stride) {
-		wc -= stride;
-		wp += wc - 1;
-		do {
-			REPEAT4(stride, wp[stride] -= wp[0]; wp--)
-			wc -= stride;
-		} while (wc > 0);
-	}
-}
-
-static void
-horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tmsize_t stride = sp->stride;
-	int32 *wp = (int32*) cp0;
-	tmsize_t wc = cc/4;
-
-	assert((cc%(4*stride))==0);
-
-	if (wc > stride) {
-		wc -= stride;
-		wp += wc - 1;
-		do {
-			REPEAT4(stride, wp[stride] -= wp[0]; wp--)
-			wc -= stride;
-		} while (wc > 0);
-	}
-}
-
-/*
- * Floating point predictor differencing routine.
- */
-static void
-fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc)
-{
-	tmsize_t stride = PredictorState(tif)->stride;
-	uint32 bps = tif->tif_dir.td_bitspersample / 8;
-	tmsize_t wc = cc / bps;
-	tmsize_t count;
-	uint8 *cp = (uint8 *) cp0;
-	uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
-
-	assert((cc%(bps*stride))==0);
-
-	if (!tmp)
-		return;
-
-	_TIFFmemcpy(tmp, cp0, cc);
-	for (count = 0; count < wc; count++) {
-		uint32 byte;
-		for (byte = 0; byte < bps; byte++) {
-			#if WORDS_BIGENDIAN
-			cp[byte * wc + count] = tmp[bps * count + byte];
-			#else
-			cp[(bps - byte - 1) * wc + count] =
-				tmp[bps * count + byte];
-			#endif
-		}
-	}
-	_TIFFfree(tmp);
-
-	cp = (uint8 *) cp0;
-	cp += cc - stride - 1;
-	for (count = cc; count > stride; count -= stride)
-		REPEAT4(stride, cp[stride] -= cp[0]; cp--)
-}
-
-static int
-PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->encodepfunc != NULL);
-	assert(sp->encoderow != NULL);
-
-	/* XXX horizontal differencing alters user's data XXX */
-	(*sp->encodepfunc)(tif, bp, cc);
-	return (*sp->encoderow)(tif, bp, cc, s);
-}
-
-static int
-PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s)
-{
-	static const char module[] = "PredictorEncodeTile";
-	TIFFPredictorState *sp = PredictorState(tif);
-        uint8 *working_copy;
-	tmsize_t cc = cc0, rowsize;
-	unsigned char* bp;
-        int result_code;
-
-	assert(sp != NULL);
-	assert(sp->encodepfunc != NULL);
-	assert(sp->encodetile != NULL);
-
-        /* 
-         * Do predictor manipulation in a working buffer to avoid altering
-         * the callers buffer. http://trac.osgeo.org/gdal/ticket/1965
-         */
-        working_copy = (uint8*) _TIFFmalloc(cc0);
-        if( working_copy == NULL )
-        {
-            TIFFErrorExt(tif->tif_clientdata, module, 
-                         "Out of memory allocating " TIFF_SSIZE_FORMAT " byte temp buffer.",
-                         cc0 );
-            return 0;
-        }
-        memcpy( working_copy, bp0, cc0 );
-        bp = working_copy;
-
-	rowsize = sp->rowsize;
-	assert(rowsize > 0);
-	assert((cc0%rowsize)==0);
-	while (cc > 0) {
-		(*sp->encodepfunc)(tif, bp, rowsize);
-		cc -= rowsize;
-		bp += rowsize;
-	}
-	result_code = (*sp->encodetile)(tif, working_copy, cc0, s);
-
-        _TIFFfree( working_copy );
-
-        return result_code;
-}
-
-#define	FIELD_PREDICTOR	(FIELD_CODEC+0)		/* XXX */
-
-static const TIFFField predictFields[] = {
-    { TIFFTAG_PREDICTOR, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UINT16, FIELD_PREDICTOR, FALSE, FALSE, "Predictor", NULL },
-};
-
-static int
-PredictorVSetField(TIFF* tif, uint32 tag, va_list ap)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->vsetparent != NULL);
-
-	switch (tag) {
-	case TIFFTAG_PREDICTOR:
-		sp->predictor = (uint16) va_arg(ap, uint16_vap);
-		TIFFSetFieldBit(tif, FIELD_PREDICTOR);
-		break;
-	default:
-		return (*sp->vsetparent)(tif, tag, ap);
-	}
-	tif->tif_flags |= TIFF_DIRTYDIRECT;
-	return 1;
-}
-
-static int
-PredictorVGetField(TIFF* tif, uint32 tag, va_list ap)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->vgetparent != NULL);
-
-	switch (tag) {
-	case TIFFTAG_PREDICTOR:
-		*va_arg(ap, uint16*) = sp->predictor;
-		break;
-	default:
-		return (*sp->vgetparent)(tif, tag, ap);
-	}
-	return 1;
-}
-
-static void
-PredictorPrintDir(TIFF* tif, FILE* fd, long flags)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-
-	(void) flags;
-	if (TIFFFieldSet(tif,FIELD_PREDICTOR)) {
-		fprintf(fd, "  Predictor: ");
-		switch (sp->predictor) {
-			case 1: fprintf(fd, "none "); break;
-			case 2: fprintf(fd, "horizontal differencing "); break;
-			case 3: fprintf(fd, "floating point predictor "); break;
-		}
-		fprintf(fd, "%u (0x%x)\n", sp->predictor, sp->predictor);
-	}
-	if (sp->printdir)
-		(*sp->printdir)(tif, fd, flags);
-}
-
-int
-TIFFPredictorInit(TIFF* tif)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-
-	assert(sp != 0);
-
-	/*
-	 * Merge codec-specific tag information.
-	 */
-	if (!_TIFFMergeFields(tif, predictFields,
-			      TIFFArrayCount(predictFields))) {
-		TIFFErrorExt(tif->tif_clientdata, "TIFFPredictorInit",
-		    "Merging Predictor codec-specific tags failed");
-		return 0;
-	}
-
-	/*
-	 * Override parent get/set field methods.
-	 */
-	sp->vgetparent = tif->tif_tagmethods.vgetfield;
-	tif->tif_tagmethods.vgetfield =
-            PredictorVGetField;/* hook for predictor tag */
-	sp->vsetparent = tif->tif_tagmethods.vsetfield;
-	tif->tif_tagmethods.vsetfield =
-	    PredictorVSetField;/* hook for predictor tag */
-	sp->printdir = tif->tif_tagmethods.printdir;
-	tif->tif_tagmethods.printdir =
-            PredictorPrintDir;	/* hook for predictor tag */
-
-	sp->setupdecode = tif->tif_setupdecode;
-	tif->tif_setupdecode = PredictorSetupDecode;
-	sp->setupencode = tif->tif_setupencode;
-	tif->tif_setupencode = PredictorSetupEncode;
-
-	sp->predictor = 1;			/* default value */
-	sp->encodepfunc = NULL;			/* no predictor routine */
-	sp->decodepfunc = NULL;			/* no predictor routine */
-	return 1;
-}
-
-int
-TIFFPredictorCleanup(TIFF* tif)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-
-	assert(sp != 0);
-
-	tif->tif_tagmethods.vgetfield = sp->vgetparent;
-	tif->tif_tagmethods.vsetfield = sp->vsetparent;
-	tif->tif_tagmethods.printdir = sp->printdir;
-	tif->tif_setupdecode = sp->setupdecode;
-	tif->tif_setupencode = sp->setupencode;
-
-	return 1;
-}
-
-/* vim: set ts=8 sts=8 sw=8 noet: */
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */
-