src/tiff/tif_aux.c

/* $Header$ */

/*
 * Copyright (c) 1991-1997 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.
 *
 * Auxiliary Support Routines.
 */
#include "tiffiop.h"
#include "tif_predict.h"
#include <math.h>

static int
TIFFDefaultTransferFunction(TIFFDirectory* td)
{
	uint16 **tf = td->td_transferfunction;
	tsize_t i, n, nbytes;

	tf[0] = tf[1] = tf[2] = 0;
	if (td->td_bitspersample >= sizeof(tsize_t) * 8 - 2)
		return 0;

	n = 1<<td->td_bitspersample;
	nbytes = n * sizeof (uint16);
	if (!(tf[0] = (uint16 *)_TIFFmalloc(nbytes)))
		return 0;
	tf[0][0] = 0;
	for (i = 1; i < n; i++) {
		double t = (double)i/((double) n-1.);
		tf[0][i] = (uint16)floor(65535.*pow(t, 2.2) + .5);
	}

	if (td->td_samplesperpixel - td->td_extrasamples > 1) {
		if (!(tf[1] = (uint16 *)_TIFFmalloc(nbytes)))
			goto bad;
		_TIFFmemcpy(tf[1], tf[0], nbytes);
		if (!(tf[2] = (uint16 *)_TIFFmalloc(nbytes)))
			goto bad;
		_TIFFmemcpy(tf[2], tf[0], nbytes);
	}
	return 1;

bad:
	if (tf[0])
		_TIFFfree(tf[0]);
	if (tf[1])
		_TIFFfree(tf[1]);
	if (tf[2])
		_TIFFfree(tf[2]);
	tf[0] = tf[1] = tf[2] = 0;
	return 0;
}

static int
TIFFDefaultRefBlackWhite(TIFFDirectory* td)
{
	int i;

	if (!(td->td_refblackwhite = (float *)_TIFFmalloc(6*sizeof (float))))
		return 0;
	for (i = 0; i < 3; i++) {
	    td->td_refblackwhite[2*i+0] = 0;
	    td->td_refblackwhite[2*i+1] = (float)((1L<<td->td_bitspersample)-1L);
	}
	return 1;
}

/*
 * Like TIFFGetField, but return any default
 * value if the tag is not present in the directory.
 *
 * NB:	We use the value in the directory, rather than
 *	explcit values so that defaults exist only one
 *	place in the library -- in TIFFDefaultDirectory.
 */
int
TIFFVGetFieldDefaulted(TIFF* tif, ttag_t tag, va_list ap)
{
	TIFFDirectory *td = &tif->tif_dir;

	if (TIFFVGetField(tif, tag, ap))
		return (1);
	switch (tag) {
	case TIFFTAG_SUBFILETYPE:
		*va_arg(ap, uint32 *) = td->td_subfiletype;
		return (1);
	case TIFFTAG_BITSPERSAMPLE:
		*va_arg(ap, uint16 *) = td->td_bitspersample;
		return (1);
	case TIFFTAG_THRESHHOLDING:
		*va_arg(ap, uint16 *) = td->td_threshholding;
		return (1);
	case TIFFTAG_FILLORDER:
		*va_arg(ap, uint16 *) = td->td_fillorder;
		return (1);
	case TIFFTAG_ORIENTATION:
		*va_arg(ap, uint16 *) = td->td_orientation;
		return (1);
	case TIFFTAG_SAMPLESPERPIXEL:
		*va_arg(ap, uint16 *) = td->td_samplesperpixel;
		return (1);
	case TIFFTAG_ROWSPERSTRIP:
		*va_arg(ap, uint32 *) = td->td_rowsperstrip;
		return (1);
	case TIFFTAG_MINSAMPLEVALUE:
		*va_arg(ap, uint16 *) = td->td_minsamplevalue;
		return (1);
	case TIFFTAG_MAXSAMPLEVALUE:
		*va_arg(ap, uint16 *) = td->td_maxsamplevalue;
		return (1);
	case TIFFTAG_PLANARCONFIG:
		*va_arg(ap, uint16 *) = td->td_planarconfig;
		return (1);
	case TIFFTAG_RESOLUTIONUNIT:
		*va_arg(ap, uint16 *) = td->td_resolutionunit;
		return (1);
	case TIFFTAG_PREDICTOR:
                {
			TIFFPredictorState* sp = (TIFFPredictorState*) tif->tif_data;
			*va_arg(ap, uint16*) = (uint16) sp->predictor;
			return (1);
                }
	case TIFFTAG_DOTRANGE:
		*va_arg(ap, uint16 *) = 0;
		*va_arg(ap, uint16 *) = (1<<td->td_bitspersample)-1;
		return (1);
	case TIFFTAG_INKSET:
		*va_arg(ap, uint16 *) = td->td_inkset;
		return (1);
	case TIFFTAG_NUMBEROFINKS:
		*va_arg(ap, uint16 *) = td->td_ninks;
		return (1);
	case TIFFTAG_EXTRASAMPLES:
		*va_arg(ap, uint16 *) = td->td_extrasamples;
		*va_arg(ap, uint16 **) = td->td_sampleinfo;
		return (1);
	case TIFFTAG_MATTEING:
		*va_arg(ap, uint16 *) =
		    (td->td_extrasamples == 1 &&
		     td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
		return (1);
	case TIFFTAG_TILEDEPTH:
		*va_arg(ap, uint32 *) = td->td_tiledepth;
		return (1);
	case TIFFTAG_DATATYPE:
		*va_arg(ap, uint16 *) = td->td_sampleformat-1;
		return (1);
	case TIFFTAG_SAMPLEFORMAT:
		*va_arg(ap, uint16 *) = td->td_sampleformat;
                return(1);
	case TIFFTAG_IMAGEDEPTH:
		*va_arg(ap, uint32 *) = td->td_imagedepth;
		return (1);
	case TIFFTAG_YCBCRCOEFFICIENTS:
		if (!td->td_ycbcrcoeffs) {
			td->td_ycbcrcoeffs = (float *)
			    _TIFFmalloc(3*sizeof (float));
			if (!td->td_ycbcrcoeffs)
				return (0);
			/* defaults are from CCIR Recommendation 601-1 */
			td->td_ycbcrcoeffs[0] = 0.299f;
			td->td_ycbcrcoeffs[1] = 0.587f;
			td->td_ycbcrcoeffs[2] = 0.114f;
		}
		*va_arg(ap, float **) = td->td_ycbcrcoeffs;
		return (1);
	case TIFFTAG_YCBCRSUBSAMPLING:
		*va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[0];
		*va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[1];
		return (1);
	case TIFFTAG_YCBCRPOSITIONING:
		*va_arg(ap, uint16 *) = td->td_ycbcrpositioning;
		return (1);
	case TIFFTAG_WHITEPOINT:
		if (!td->td_whitepoint) {
			td->td_whitepoint = (float *)
				_TIFFmalloc(2 * sizeof (float));
			if (!td->td_whitepoint)
				return (0);
			/* TIFF 6.0 specification says that it is no default
			   value for the WhitePoint, but AdobePhotoshop TIFF
			   Technical Note tells that it should be CIE D50. */
			td->td_whitepoint[0] =
				D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
			td->td_whitepoint[1] =
				D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
		}
		*va_arg(ap, float **) = td->td_whitepoint;
		return (1);
	case TIFFTAG_TRANSFERFUNCTION:
		if (!td->td_transferfunction[0] &&
		    !TIFFDefaultTransferFunction(td)) {
			TIFFError(tif->tif_name, "No space for \"TransferFunction\" tag");
			return (0);
		}
		*va_arg(ap, uint16 **) = td->td_transferfunction[0];
		if (td->td_samplesperpixel - td->td_extrasamples > 1) {
			*va_arg(ap, uint16 **) = td->td_transferfunction[1];
			*va_arg(ap, uint16 **) = td->td_transferfunction[2];
		}
		return (1);
	case TIFFTAG_REFERENCEBLACKWHITE:
		if (!td->td_refblackwhite && !TIFFDefaultRefBlackWhite(td))
			return (0);
		*va_arg(ap, float **) = td->td_refblackwhite;
		return (1);
	}
	return (0);
}

/*
 * Like TIFFGetField, but return any default
 * value if the tag is not present in the directory.
 */
int
TIFFGetFieldDefaulted(TIFF* tif, ttag_t tag, ...)
{
	int ok;
	va_list ap;

	va_start(ap, tag);
	ok =  TIFFVGetFieldDefaulted(tif, tag, ap);
	va_end(ap);
	return (ok);
}
Commit	Line	Data
	1	/* $Header$ */
	2
	3	/*
	4	* Copyright (c) 1991-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
	7	* Permission to use, copy, modify, distribute, and sell this software and
	8	* its documentation for any purpose is hereby granted without fee, provided
	9	* that (i) the above copyright notices and this permission notice appear in
	10	* all copies of the software and related documentation, and (ii) the names of
	11	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	12	* publicity relating to the software without the specific, prior written
	13	* permission of Sam Leffler and Silicon Graphics.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	17	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	18	*
	19	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	20	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	21	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	/*
	28	* TIFF Library.
	29	*
	30	* Auxiliary Support Routines.
	31	*/
	32	#include "tiffiop.h"
	33	#include "tif_predict.h"
	34	#include <math.h>
	35
	36	static int
	37	TIFFDefaultTransferFunction(TIFFDirectory* td)
	38	{
	39	uint16 **tf = td->td_transferfunction;
	40	tsize_t i, n, nbytes;
	41
	42	tf[0] = tf[1] = tf[2] = 0;
	43	if (td->td_bitspersample >= sizeof(tsize_t) * 8 - 2)
	44	return 0;
	45
	46	n = 1<<td->td_bitspersample;
	47	nbytes = n * sizeof (uint16);
	48	if (!(tf[0] = (uint16 *)_TIFFmalloc(nbytes)))
	49	return 0;
	50	tf[0][0] = 0;
	51	for (i = 1; i < n; i++) {
	52	double t = (double)i/((double) n-1.);
	53	tf[0][i] = (uint16)floor(65535.*pow(t, 2.2) + .5);
	54	}
	55
	56	if (td->td_samplesperpixel - td->td_extrasamples > 1) {
	57	if (!(tf[1] = (uint16 *)_TIFFmalloc(nbytes)))
	58	goto bad;
	59	_TIFFmemcpy(tf[1], tf[0], nbytes);
	60	if (!(tf[2] = (uint16 *)_TIFFmalloc(nbytes)))
	61	goto bad;
	62	_TIFFmemcpy(tf[2], tf[0], nbytes);
	63	}
	64	return 1;
	65
	66	bad:
	67	if (tf[0])
	68	_TIFFfree(tf[0]);
	69	if (tf[1])
	70	_TIFFfree(tf[1]);
	71	if (tf[2])
	72	_TIFFfree(tf[2]);
	73	tf[0] = tf[1] = tf[2] = 0;
	74	return 0;
	75	}
	76
	77	static int
	78	TIFFDefaultRefBlackWhite(TIFFDirectory* td)
	79	{
	80	int i;
	81
	82	if (!(td->td_refblackwhite = (float )_TIFFmalloc(6sizeof (float))))
	83	return 0;
	84	for (i = 0; i < 3; i++) {
	85	td->td_refblackwhite[2*i+0] = 0;
	86	td->td_refblackwhite[2*i+1] = (float)((1L<<td->td_bitspersample)-1L);
	87	}
	88	return 1;
	89	}
	90
	91	/*
	92	* Like TIFFGetField, but return any default
	93	* value if the tag is not present in the directory.
	94	*
	95	* NB: We use the value in the directory, rather than
	96	* explcit values so that defaults exist only one
	97	* place in the library -- in TIFFDefaultDirectory.
	98	*/
	99	int
	100	TIFFVGetFieldDefaulted(TIFF* tif, ttag_t tag, va_list ap)
	101	{
	102	TIFFDirectory *td = &tif->tif_dir;
	103
	104	if (TIFFVGetField(tif, tag, ap))
	105	return (1);
	106	switch (tag) {
	107	case TIFFTAG_SUBFILETYPE:
	108	va_arg(ap, uint32 ) = td->td_subfiletype;
	109	return (1);
	110	case TIFFTAG_BITSPERSAMPLE:
	111	va_arg(ap, uint16 ) = td->td_bitspersample;
	112	return (1);
	113	case TIFFTAG_THRESHHOLDING:
	114	va_arg(ap, uint16 ) = td->td_threshholding;
	115	return (1);
	116	case TIFFTAG_FILLORDER:
	117	va_arg(ap, uint16 ) = td->td_fillorder;
	118	return (1);
	119	case TIFFTAG_ORIENTATION:
	120	va_arg(ap, uint16 ) = td->td_orientation;
	121	return (1);
	122	case TIFFTAG_SAMPLESPERPIXEL:
	123	va_arg(ap, uint16 ) = td->td_samplesperpixel;
	124	return (1);
	125	case TIFFTAG_ROWSPERSTRIP:
	126	va_arg(ap, uint32 ) = td->td_rowsperstrip;
	127	return (1);
	128	case TIFFTAG_MINSAMPLEVALUE:
	129	va_arg(ap, uint16 ) = td->td_minsamplevalue;
	130	return (1);
	131	case TIFFTAG_MAXSAMPLEVALUE:
	132	va_arg(ap, uint16 ) = td->td_maxsamplevalue;
	133	return (1);
	134	case TIFFTAG_PLANARCONFIG:
	135	va_arg(ap, uint16 ) = td->td_planarconfig;
	136	return (1);
	137	case TIFFTAG_RESOLUTIONUNIT:
	138	va_arg(ap, uint16 ) = td->td_resolutionunit;
	139	return (1);
	140	case TIFFTAG_PREDICTOR:
	141	{
	142	TIFFPredictorState* sp = (TIFFPredictorState*) tif->tif_data;
	143	va_arg(ap, uint16) = (uint16) sp->predictor;
	144	return (1);
	145	}
	146	case TIFFTAG_DOTRANGE:
	147	va_arg(ap, uint16 ) = 0;
	148	va_arg(ap, uint16 ) = (1<<td->td_bitspersample)-1;
	149	return (1);
	150	case TIFFTAG_INKSET:
	151	va_arg(ap, uint16 ) = td->td_inkset;
	152	return (1);
	153	case TIFFTAG_NUMBEROFINKS:
	154	va_arg(ap, uint16 ) = td->td_ninks;
	155	return (1);
	156	case TIFFTAG_EXTRASAMPLES:
	157	va_arg(ap, uint16 ) = td->td_extrasamples;
	158	va_arg(ap, uint16 *) = td->td_sampleinfo;
	159	return (1);
	160	case TIFFTAG_MATTEING:
	161	va_arg(ap, uint16 ) =
	162	(td->td_extrasamples == 1 &&
	163	td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
	164	return (1);
	165	case TIFFTAG_TILEDEPTH:
	166	va_arg(ap, uint32 ) = td->td_tiledepth;
	167	return (1);
	168	case TIFFTAG_DATATYPE:
	169	va_arg(ap, uint16 ) = td->td_sampleformat-1;
	170	return (1);
	171	case TIFFTAG_SAMPLEFORMAT:
	172	va_arg(ap, uint16 ) = td->td_sampleformat;
	173	return(1);
	174	case TIFFTAG_IMAGEDEPTH:
	175	va_arg(ap, uint32 ) = td->td_imagedepth;
	176	return (1);
	177	case TIFFTAG_YCBCRCOEFFICIENTS:
	178	if (!td->td_ycbcrcoeffs) {
	179	td->td_ycbcrcoeffs = (float *)
	180	_TIFFmalloc(3*sizeof (float));
	181	if (!td->td_ycbcrcoeffs)
	182	return (0);
	183	/* defaults are from CCIR Recommendation 601-1 */
	184	td->td_ycbcrcoeffs[0] = 0.299f;
	185	td->td_ycbcrcoeffs[1] = 0.587f;
	186	td->td_ycbcrcoeffs[2] = 0.114f;
	187	}
	188	va_arg(ap, float *) = td->td_ycbcrcoeffs;
	189	return (1);
	190	case TIFFTAG_YCBCRSUBSAMPLING:
	191	va_arg(ap, uint16 ) = td->td_ycbcrsubsampling[0];
	192	va_arg(ap, uint16 ) = td->td_ycbcrsubsampling[1];
	193	return (1);
	194	case TIFFTAG_YCBCRPOSITIONING:
	195	va_arg(ap, uint16 ) = td->td_ycbcrpositioning;
	196	return (1);
	197	case TIFFTAG_WHITEPOINT:
	198	if (!td->td_whitepoint) {
	199	td->td_whitepoint = (float *)
	200	_TIFFmalloc(2 * sizeof (float));
	201	if (!td->td_whitepoint)
	202	return (0);
	203	/* TIFF 6.0 specification says that it is no default
	204	value for the WhitePoint, but AdobePhotoshop TIFF
	205	Technical Note tells that it should be CIE D50. */
	206	td->td_whitepoint[0] =
	207	D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
	208	td->td_whitepoint[1] =
	209	D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
	210	}
	211	va_arg(ap, float *) = td->td_whitepoint;
	212	return (1);
	213	case TIFFTAG_TRANSFERFUNCTION:
	214	if (!td->td_transferfunction[0] &&
	215	!TIFFDefaultTransferFunction(td)) {
	216	TIFFError(tif->tif_name, "No space for \"TransferFunction\" tag");
	217	return (0);
	218	}
	219	va_arg(ap, uint16 *) = td->td_transferfunction[0];
	220	if (td->td_samplesperpixel - td->td_extrasamples > 1) {
	221	va_arg(ap, uint16 *) = td->td_transferfunction[1];
	222	va_arg(ap, uint16 *) = td->td_transferfunction[2];
	223	}
	224	return (1);
	225	case TIFFTAG_REFERENCEBLACKWHITE:
	226	if (!td->td_refblackwhite && !TIFFDefaultRefBlackWhite(td))
	227	return (0);
	228	va_arg(ap, float *) = td->td_refblackwhite;
	229	return (1);
	230	}
	231	return (0);
	232	}
	233
	234	/*
	235	* Like TIFFGetField, but return any default
	236	* value if the tag is not present in the directory.
	237	*/
	238	int
	239	TIFFGetFieldDefaulted(TIFF* tif, ttag_t tag, ...)
	240	{
	241	int ok;
	242	va_list ap;
	243
	244	va_start(ap, tag);
	245	ok = TIFFVGetFieldDefaulted(tif, tag, ap);
	246	va_end(ap);
	247	return (ok);
	248	}