X-Git-Url: http://git.maemo.org/git/?p=opencv;a=blobdiff_plain;f=otherlibs%2F_graphics%2Fsrc%2Flibtiff%2Ftif_predict.c;fp=otherlibs%2F_graphics%2Fsrc%2Flibtiff%2Ftif_predict.c;h=0000000000000000000000000000000000000000;hp=e7963696ae01b7bd8ff2208527515996f70a13d3;hb=e4c14cdbdf2fe805e79cd96ded236f57e7b89060;hpb=454138ff8a20f6edb9b65a910101403d8b520643

diff --git a/otherlibs/_graphics/src/libtiff/tif_predict.c b/otherlibs/_graphics/src/libtiff/tif_predict.c
deleted file mode 100644
index e796369..0000000
--- a/otherlibs/_graphics/src/libtiff/tif_predict.c
+++ /dev/null
@@ -1,464 +0,0 @@
-/* $Id: tif_predict.c,v 1.1 2005/06/17 13:54:52 vp153 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*, tidata_t, tsize_t);
-static	void horAcc16(TIFF*, tidata_t, tsize_t);
-static	void swabHorAcc16(TIFF*, tidata_t, tsize_t);
-static	void horDiff8(TIFF*, tidata_t, tsize_t);
-static	void horDiff16(TIFF*, tidata_t, tsize_t);
-static	int PredictorDecodeRow(TIFF*, tidata_t, tsize_t, tsample_t);
-static	int PredictorDecodeTile(TIFF*, tidata_t, tsize_t, tsample_t);
-static	int PredictorEncodeRow(TIFF*, tidata_t, tsize_t, tsample_t);
-static	int PredictorEncodeTile(TIFF*, tidata_t, tsize_t, tsample_t);
-
-static int
-PredictorSetup(TIFF* tif)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	TIFFDirectory* td = &tif->tif_dir;
-
-	if (sp->predictor == 1)		/* no differencing */
-		return (1);
-	if (sp->predictor != 2) {
-		TIFFError(tif->tif_name, "\"Predictor\" value %d not supported",
-		    sp->predictor);
-		return (0);
-	}
-	if (td->td_bitspersample != 8 && td->td_bitspersample != 16) {
-		TIFFError(tif->tif_name,
-    "Horizontal differencing \"Predictor\" not supported with %d-bit samples",
-		    td->td_bitspersample);
-		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);
-	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->pfunc = horAcc8; break;
-		case 16: sp->pfunc = horAcc16; break;
-		}
-		/*
-		 * Override default decoding method with
-		 * one that does the predictor stuff.
-		 */
-		sp->coderow = tif->tif_decoderow;
-		tif->tif_decoderow = PredictorDecodeRow;
-		sp->codestrip = tif->tif_decodestrip;
-		tif->tif_decodestrip = PredictorDecodeTile;
-		sp->codetile = 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->pfunc == horAcc16) {
-				sp->pfunc = swabHorAcc16;
-				tif->tif_postdecode = _TIFFNoPostDecode;
-			} /* else handle 32-bit case... */
-		}
-	}
-	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->pfunc = horDiff8; break;
-		case 16: sp->pfunc = horDiff16; break;
-		}
-		/*
-		 * Override default encoding method with
-		 * one that does the predictor stuff.
-		 */
-		sp->coderow = tif->tif_encoderow;
-		tif->tif_encoderow = PredictorEncodeRow;
-		sp->codestrip = tif->tif_encodestrip;
-		tif->tif_encodestrip = PredictorEncodeTile;
-		sp->codetile = tif->tif_encodetile;
-		tif->tif_encodetile = PredictorEncodeTile;
-	}
-	return (1);
-}
-
-#define REPEAT4(n, op)		\
-    switch (n) {		\
-    default: { int 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, tidata_t cp0, tsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tsize_t stride = sp->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);
-		}
-	}
-}
-
-static void
-swabHorAcc16(TIFF* tif, tidata_t cp0, tsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tsize_t stride = sp->stride;
-	uint16* wp = (uint16*) cp0;
-	tsize_t wc = cc / 2;
-
-	if (wc > stride) {
-		TIFFSwabArrayOfShort(wp, wc);
-		wc -= stride;
-		do {
-			REPEAT4(stride, wp[stride] += wp[0]; wp++)
-			wc -= stride;
-		} while ((int32) wc > 0);
-	}
-}
-
-static void
-horAcc16(TIFF* tif, tidata_t cp0, tsize_t cc)
-{
-	tsize_t stride = PredictorState(tif)->stride;
-	uint16* wp = (uint16*) cp0;
-	tsize_t wc = cc / 2;
-
-	if (wc > stride) {
-		wc -= stride;
-		do {
-			REPEAT4(stride, wp[stride] += wp[0]; wp++)
-			wc -= stride;
-		} while ((int32) wc > 0);
-	}
-}
-
-/*
- * Decode a scanline and apply the predictor routine.
- */
-static int
-PredictorDecodeRow(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->coderow != NULL);
-	assert(sp->pfunc != NULL);
-	if ((*sp->coderow)(tif, op0, occ0, s)) {
-		(*sp->pfunc)(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, tidata_t op0, tsize_t occ0, tsample_t s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->codetile != NULL);
-	if ((*sp->codetile)(tif, op0, occ0, s)) {
-		tsize_t rowsize = sp->rowsize;
-		assert(rowsize > 0);
-		assert(sp->pfunc != NULL);
-		while ((long)occ0 > 0) {
-			(*sp->pfunc)(tif, op0, (tsize_t) rowsize);
-			occ0 -= rowsize;
-			op0 += rowsize;
-		}
-		return (1);
-	} else
-		return (0);
-}
-
-static void
-horDiff8(TIFF* tif, tidata_t cp0, tsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tsize_t stride = sp->stride;
-	char* cp = (char*) cp0;
-
-	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 ((int32)(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 ((int32)(cc -= 4) > 0);
-		} else {
-			cp += cc - 1;
-			do {
-				REPEAT4(stride, cp[stride] -= cp[0]; cp--)
-			} while ((int32)(cc -= stride) > 0);
-		}
-	}
-}
-
-static void
-horDiff16(TIFF* tif, tidata_t cp0, tsize_t cc)
-{
-	TIFFPredictorState* sp = PredictorState(tif);
-	tsize_t stride = sp->stride;
-	int16 *wp = (int16*) cp0;
-	tsize_t wc = cc/2;
-
-	if (wc > stride) {
-		wc -= stride;
-		wp += wc - 1;
-		do {
-			REPEAT4(stride, wp[stride] -= wp[0]; wp--)
-			wc -= stride;
-		} while ((int32) wc > 0);
-	}
-}
-
-static int
-PredictorEncodeRow(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	assert(sp != NULL);
-	assert(sp->pfunc != NULL);
-	assert(sp->coderow != NULL);
-/* XXX horizontal differencing alters user's data XXX */
-	(*sp->pfunc)(tif, bp, cc);
-	return ((*sp->coderow)(tif, bp, cc, s));
-}
-
-static int
-PredictorEncodeTile(TIFF* tif, tidata_t bp0, tsize_t cc0, tsample_t s)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-	tsize_t cc = cc0, rowsize;
-	unsigned char* bp = bp0;
-
-	assert(sp != NULL);
-	assert(sp->pfunc != NULL);
-	assert(sp->codetile != NULL);
-	rowsize = sp->rowsize;
-	assert(rowsize > 0);
-	while ((long)cc > 0) {
-		(*sp->pfunc)(tif, bp, (tsize_t) rowsize);
-		cc -= rowsize;
-		bp += rowsize;
-	}
-	return ((*sp->codetile)(tif, bp0, cc0, s));
-}
-
-#define	FIELD_PREDICTOR	(FIELD_CODEC+0)		/* XXX */
-
-static const TIFFFieldInfo predictFieldInfo[] = {
-    { TIFFTAG_PREDICTOR,	 1, 1, TIFF_SHORT,	FIELD_PREDICTOR,
-      FALSE,	FALSE,	"Predictor" },
-};
-#define	N(a)	(sizeof (a) / sizeof (a[0]))
-
-static int
-PredictorVSetField(TIFF* tif, ttag_t tag, va_list ap)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	switch (tag) {
-	case TIFFTAG_PREDICTOR:
-		sp->predictor = (uint16) va_arg(ap, int);
-		TIFFSetFieldBit(tif, FIELD_PREDICTOR);
-		break;
-	default:
-		return (*sp->vsetparent)(tif, tag, ap);
-	}
-	tif->tif_flags |= TIFF_DIRTYDIRECT;
-	return (1);
-}
-
-static int
-PredictorVGetField(TIFF* tif, ttag_t tag, va_list ap)
-{
-	TIFFPredictorState *sp = PredictorState(tif);
-
-	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;
-		}
-		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);
-
-	/*
-	 * Merge codec-specific tag information and
-	 * override parent get/set field methods.
-	 */
-	_TIFFMergeFieldInfo(tif, predictFieldInfo, N(predictFieldInfo));
-	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->pfunc = NULL;			/* no predictor routine */
-	return (1);
-}
-
-/* vim: set ts=8 sts=8 sw=8 noet: */