src/tiff/libtiff/tif_aux.c

/* $Id$ */

/*
 * 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>

tdata_t
_TIFFCheckMalloc(TIFF* tif, size_t nmemb, size_t elem_size, const char* what)
{
	tdata_t cp = NULL;
	tsize_t	bytes = nmemb * elem_size;

	/*
	 * XXX: Check for integer overflow.
	 */
	if (nmemb && elem_size && bytes / elem_size == nmemb)
		cp = _TIFFmalloc(bytes);

	if (cp == NULL)
		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space %s", what);

	return (cp);
}

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;
}

/*
 * 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 *) = INKSET_CMYK;
		return 1;
	case TIFFTAG_NUMBEROFINKS:
		*va_arg(ap, uint16 *) = 4;
		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:
		{
			/* defaults are from CCIR Recommendation 601-1 */
			static float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
			*va_arg(ap, float **) = 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:
		{
			static float whitepoint[2];

			/* TIFF 6.0 specification tells that it is no default
			   value for the WhitePoint, but AdobePhotoshop TIFF
			   Technical Note tells that it should be CIE D50. */
			whitepoint[0] =	D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
			whitepoint[1] =	D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
			*va_arg(ap, float **) = whitepoint;
			return 1;
		}
	case TIFFTAG_TRANSFERFUNCTION:
		if (!td->td_transferfunction[0] &&
		    !TIFFDefaultTransferFunction(td)) {
			TIFFErrorExt(tif->tif_clientdata, 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:
		{
			int i;
			static float ycbcr_refblackwhite[] =
			{ 0.0F, 255.0F, 128.0F, 255.0F, 128.0F, 255.0F };
			static float rgb_refblackwhite[6];

			for (i = 0; i < 3; i++) {
				rgb_refblackwhite[2 * i + 0] = 0.0F;
				rgb_refblackwhite[2 * i + 1] =
					(float)((1L<<td->td_bitspersample)-1L);
			}

			if (td->td_photometric == PHOTOMETRIC_YCBCR) {
				/*
				 * YCbCr (Class Y) images must have the
				 * ReferenceBlackWhite tag set. Fix the
				 * broken images, which lacks that tag.
				 */
				*va_arg(ap, float **) = ycbcr_refblackwhite;
			} else {
				/*
				 * Assume RGB (Class R)
				 */
				*va_arg(ap, float **) = rgb_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);
}

/* vim: set ts=8 sts=8 sw=8 noet: */
Commit	Line	Data
	1	/* $Id$ */
	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	tdata_t
	37	_TIFFCheckMalloc(TIFF* tif, size_t nmemb, size_t elem_size, const char* what)
	38	{
	39	tdata_t cp = NULL;
	40	tsize_t bytes = nmemb * elem_size;
	41
	42	/*
	43	* XXX: Check for integer overflow.
	44	*/
	45	if (nmemb && elem_size && bytes / elem_size == nmemb)
	46	cp = _TIFFmalloc(bytes);
	47
	48	if (cp == NULL)
	49	TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space %s", what);
	50
	51	return (cp);
	52	}
	53
	54	static int
	55	TIFFDefaultTransferFunction(TIFFDirectory* td)
	56	{
	57	uint16 **tf = td->td_transferfunction;
	58	tsize_t i, n, nbytes;
	59
	60	tf[0] = tf[1] = tf[2] = 0;
	61	if (td->td_bitspersample >= sizeof(tsize_t) * 8 - 2)
	62	return 0;
	63
	64	n = 1<<td->td_bitspersample;
	65	nbytes = n * sizeof (uint16);
	66	if (!(tf[0] = (uint16 *)_TIFFmalloc(nbytes)))
	67	return 0;
	68	tf[0][0] = 0;
	69	for (i = 1; i < n; i++) {
	70	double t = (double)i/((double) n-1.);
	71	tf[0][i] = (uint16)floor(65535.*pow(t, 2.2) + .5);
	72	}
	73
	74	if (td->td_samplesperpixel - td->td_extrasamples > 1) {
	75	if (!(tf[1] = (uint16 *)_TIFFmalloc(nbytes)))
	76	goto bad;
	77	_TIFFmemcpy(tf[1], tf[0], nbytes);
	78	if (!(tf[2] = (uint16 *)_TIFFmalloc(nbytes)))
	79	goto bad;
	80	_TIFFmemcpy(tf[2], tf[0], nbytes);
	81	}
	82	return 1;
	83
	84	bad:
	85	if (tf[0])
	86	_TIFFfree(tf[0]);
	87	if (tf[1])
	88	_TIFFfree(tf[1]);
	89	if (tf[2])
	90	_TIFFfree(tf[2]);
	91	tf[0] = tf[1] = tf[2] = 0;
	92	return 0;
	93	}
	94
	95	/*
	96	* Like TIFFGetField, but return any default
	97	* value if the tag is not present in the directory.
	98	*
	99	* NB: We use the value in the directory, rather than
	100	* explcit values so that defaults exist only one
	101	* place in the library -- in TIFFDefaultDirectory.
	102	*/
	103	int
	104	TIFFVGetFieldDefaulted(TIFF* tif, ttag_t tag, va_list ap)
	105	{
	106	TIFFDirectory *td = &tif->tif_dir;
	107
	108	if (TIFFVGetField(tif, tag, ap))
	109	return (1);
	110	switch (tag) {
	111	case TIFFTAG_SUBFILETYPE:
	112	va_arg(ap, uint32 ) = td->td_subfiletype;
	113	return (1);
	114	case TIFFTAG_BITSPERSAMPLE:
	115	va_arg(ap, uint16 ) = td->td_bitspersample;
	116	return (1);
	117	case TIFFTAG_THRESHHOLDING:
	118	va_arg(ap, uint16 ) = td->td_threshholding;
	119	return (1);
	120	case TIFFTAG_FILLORDER:
	121	va_arg(ap, uint16 ) = td->td_fillorder;
	122	return (1);
	123	case TIFFTAG_ORIENTATION:
	124	va_arg(ap, uint16 ) = td->td_orientation;
	125	return (1);
	126	case TIFFTAG_SAMPLESPERPIXEL:
	127	va_arg(ap, uint16 ) = td->td_samplesperpixel;
	128	return (1);
	129	case TIFFTAG_ROWSPERSTRIP:
	130	va_arg(ap, uint32 ) = td->td_rowsperstrip;
	131	return (1);
	132	case TIFFTAG_MINSAMPLEVALUE:
	133	va_arg(ap, uint16 ) = td->td_minsamplevalue;
	134	return (1);
	135	case TIFFTAG_MAXSAMPLEVALUE:
	136	va_arg(ap, uint16 ) = td->td_maxsamplevalue;
	137	return (1);
	138	case TIFFTAG_PLANARCONFIG:
	139	va_arg(ap, uint16 ) = td->td_planarconfig;
	140	return (1);
	141	case TIFFTAG_RESOLUTIONUNIT:
	142	va_arg(ap, uint16 ) = td->td_resolutionunit;
	143	return (1);
	144	case TIFFTAG_PREDICTOR:
	145	{
	146	TIFFPredictorState* sp = (TIFFPredictorState*) tif->tif_data;
	147	va_arg(ap, uint16) = (uint16) sp->predictor;
	148	return 1;
	149	}
	150	case TIFFTAG_DOTRANGE:
	151	va_arg(ap, uint16 ) = 0;
	152	va_arg(ap, uint16 ) = (1<<td->td_bitspersample)-1;
	153	return (1);
	154	case TIFFTAG_INKSET:
	155	va_arg(ap, uint16 ) = INKSET_CMYK;
	156	return 1;
	157	case TIFFTAG_NUMBEROFINKS:
	158	va_arg(ap, uint16 ) = 4;
	159	return (1);
	160	case TIFFTAG_EXTRASAMPLES:
	161	va_arg(ap, uint16 ) = td->td_extrasamples;
	162	va_arg(ap, uint16 *) = td->td_sampleinfo;
	163	return (1);
	164	case TIFFTAG_MATTEING:
	165	va_arg(ap, uint16 ) =
	166	(td->td_extrasamples == 1 &&
	167	td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
	168	return (1);
	169	case TIFFTAG_TILEDEPTH:
	170	va_arg(ap, uint32 ) = td->td_tiledepth;
	171	return (1);
	172	case TIFFTAG_DATATYPE:
	173	va_arg(ap, uint16 ) = td->td_sampleformat-1;
	174	return (1);
	175	case TIFFTAG_SAMPLEFORMAT:
	176	va_arg(ap, uint16 ) = td->td_sampleformat;
	177	return(1);
	178	case TIFFTAG_IMAGEDEPTH:
	179	va_arg(ap, uint32 ) = td->td_imagedepth;
	180	return (1);
	181	case TIFFTAG_YCBCRCOEFFICIENTS:
	182	{
	183	/* defaults are from CCIR Recommendation 601-1 */
	184	static float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
	185	va_arg(ap, float *) = ycbcrcoeffs;
	186	return 1;
	187	}
	188	case TIFFTAG_YCBCRSUBSAMPLING:
	189	va_arg(ap, uint16 ) = td->td_ycbcrsubsampling[0];
	190	va_arg(ap, uint16 ) = td->td_ycbcrsubsampling[1];
	191	return (1);
	192	case TIFFTAG_YCBCRPOSITIONING:
	193	va_arg(ap, uint16 ) = td->td_ycbcrpositioning;
	194	return (1);
	195	case TIFFTAG_WHITEPOINT:
	196	{
	197	static float whitepoint[2];
	198
	199	/* TIFF 6.0 specification tells that it is no default
	200	value for the WhitePoint, but AdobePhotoshop TIFF
	201	Technical Note tells that it should be CIE D50. */
	202	whitepoint[0] = D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
	203	whitepoint[1] = D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
	204	va_arg(ap, float *) = whitepoint;
	205	return 1;
	206	}
	207	case TIFFTAG_TRANSFERFUNCTION:
	208	if (!td->td_transferfunction[0] &&
	209	!TIFFDefaultTransferFunction(td)) {
	210	TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space for \"TransferFunction\" tag");
	211	return (0);
	212	}
	213	va_arg(ap, uint16 *) = td->td_transferfunction[0];
	214	if (td->td_samplesperpixel - td->td_extrasamples > 1) {
	215	va_arg(ap, uint16 *) = td->td_transferfunction[1];
	216	va_arg(ap, uint16 *) = td->td_transferfunction[2];
	217	}
	218	return (1);
	219	case TIFFTAG_REFERENCEBLACKWHITE:
	220	{
	221	int i;
	222	static float ycbcr_refblackwhite[] =
	223	{ 0.0F, 255.0F, 128.0F, 255.0F, 128.0F, 255.0F };
	224	static float rgb_refblackwhite[6];
	225
	226	for (i = 0; i < 3; i++) {
	227	rgb_refblackwhite[2 * i + 0] = 0.0F;
	228	rgb_refblackwhite[2 * i + 1] =
	229	(float)((1L<<td->td_bitspersample)-1L);
	230	}
	231
	232	if (td->td_photometric == PHOTOMETRIC_YCBCR) {
	233	/*
	234	* YCbCr (Class Y) images must have the
	235	* ReferenceBlackWhite tag set. Fix the
	236	* broken images, which lacks that tag.
	237	*/
	238	va_arg(ap, float *) = ycbcr_refblackwhite;
	239	} else {
	240	/*
	241	* Assume RGB (Class R)
	242	*/
	243	va_arg(ap, float *) = rgb_refblackwhite;
	244	}
	245	return 1;
	246	}
	247	}
	248	return 0;
	249	}
	250
	251	/*
	252	* Like TIFFGetField, but return any default
	253	* value if the tag is not present in the directory.
	254	*/
	255	int
	256	TIFFGetFieldDefaulted(TIFF* tif, ttag_t tag, ...)
	257	{
	258	int ok;
	259	va_list ap;
	260
	261	va_start(ap, tag);
	262	ok = TIFFVGetFieldDefaulted(tif, tag, ap);
	263	va_end(ap);
	264	return (ok);
	265	}
	266
	267	/* vim: set ts=8 sts=8 sw=8 noet: */