[wxWidgets.git] / 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
8414a40c VZ	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: */