src/tiff/libtiff/tif_tile.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.
 *
 * Tiled Image Support Routines.
 */
#include "tiffiop.h"

/*
 * Compute which tile an (x,y,z,s) value is in.
 */
uint32
TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
{
	TIFFDirectory *td = &tif->tif_dir;
	uint32 dx = td->td_tilewidth;
	uint32 dy = td->td_tilelength;
	uint32 dz = td->td_tiledepth;
	uint32 tile = 1;

	if (td->td_imagedepth == 1)
		z = 0;
	if (dx == (uint32) -1)
		dx = td->td_imagewidth;
	if (dy == (uint32) -1)
		dy = td->td_imagelength;
	if (dz == (uint32) -1)
		dz = td->td_imagedepth;
	if (dx != 0 && dy != 0 && dz != 0) {
		uint32 xpt = TIFFhowmany_32(td->td_imagewidth, dx);
		uint32 ypt = TIFFhowmany_32(td->td_imagelength, dy);
		uint32 zpt = TIFFhowmany_32(td->td_imagedepth, dz);

		if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
			tile = (xpt*ypt*zpt)*s +
			     (xpt*ypt)*(z/dz) +
			     xpt*(y/dy) +
			     x/dx;
		else
			tile = (xpt*ypt)*(z/dz) + xpt*(y/dy) + x/dx;
	}
	return (tile);
}

/*
 * Check an (x,y,z,s) coordinate
 * against the image bounds.
 */
int
TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
{
	TIFFDirectory *td = &tif->tif_dir;

	if (x >= td->td_imagewidth) {
		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
			     "%lu: Col out of range, max %lu",
			     (unsigned long) x,
			     (unsigned long) (td->td_imagewidth - 1));
		return (0);
	}
	if (y >= td->td_imagelength) {
		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
			     "%lu: Row out of range, max %lu",
			     (unsigned long) y,
			     (unsigned long) (td->td_imagelength - 1));
		return (0);
	}
	if (z >= td->td_imagedepth) {
		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
			     "%lu: Depth out of range, max %lu",
			     (unsigned long) z,
			     (unsigned long) (td->td_imagedepth - 1));
		return (0);
	}
	if (td->td_planarconfig == PLANARCONFIG_SEPARATE &&
	    s >= td->td_samplesperpixel) {
		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
			     "%lu: Sample out of range, max %lu",
			     (unsigned long) s,
			     (unsigned long) (td->td_samplesperpixel - 1));
		return (0);
	}
	return (1);
}

/*
 * Compute how many tiles are in an image.
 */
uint32
TIFFNumberOfTiles(TIFF* tif)
{
	TIFFDirectory *td = &tif->tif_dir;
	uint32 dx = td->td_tilewidth;
	uint32 dy = td->td_tilelength;
	uint32 dz = td->td_tiledepth;
	uint32 ntiles;

	if (dx == (uint32) -1)
		dx = td->td_imagewidth;
	if (dy == (uint32) -1)
		dy = td->td_imagelength;
	if (dz == (uint32) -1)
		dz = td->td_imagedepth;
	ntiles = (dx == 0 || dy == 0 || dz == 0) ? 0 :
	    _TIFFMultiply32(tif, _TIFFMultiply32(tif, TIFFhowmany_32(td->td_imagewidth, dx),
	    TIFFhowmany_32(td->td_imagelength, dy),
	    "TIFFNumberOfTiles"),
	    TIFFhowmany_32(td->td_imagedepth, dz), "TIFFNumberOfTiles");
	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
		ntiles = _TIFFMultiply32(tif, ntiles, td->td_samplesperpixel,
		    "TIFFNumberOfTiles");
	return (ntiles);
}

/*
 * Compute the # bytes in each row of a tile.
 */
uint64
TIFFTileRowSize64(TIFF* tif)
{
	TIFFDirectory *td = &tif->tif_dir;
	uint64 rowsize;

	if (td->td_tilelength == 0 || td->td_tilewidth == 0)
		return (0);
	rowsize = _TIFFMultiply64(tif, td->td_bitspersample, td->td_tilewidth,
	    "TIFFTileRowSize");
	if (td->td_planarconfig == PLANARCONFIG_CONTIG)
		rowsize = _TIFFMultiply64(tif, rowsize, td->td_samplesperpixel,
		    "TIFFTileRowSize");
	return (TIFFhowmany8_64(rowsize));
}
tmsize_t
TIFFTileRowSize(TIFF* tif)
{
	static const char module[] = "TIFFTileRowSize";
	uint64 m;
	tmsize_t n;
	m=TIFFTileRowSize64(tif);
	n=(tmsize_t)m;
	if ((uint64)n!=m)
	{
		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
		n=0;
	}
	return(n);
}

/*
 * Compute the # bytes in a variable length, row-aligned tile.
 */
uint64
TIFFVTileSize64(TIFF* tif, uint32 nrows)
{
	static const char module[] = "TIFFVTileSize64";
	TIFFDirectory *td = &tif->tif_dir;
	if (td->td_tilelength == 0 || td->td_tilewidth == 0 ||
	    td->td_tiledepth == 0)
		return (0);
	if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
	    (td->td_photometric==PHOTOMETRIC_YCBCR)&&
	    (td->td_samplesperpixel==3)&&
	    (!isUpSampled(tif)))
	{
		/*
		 * Packed YCbCr data contain one Cb+Cr for every
		 * HorizontalSampling*VerticalSampling Y values.
		 * Must also roundup width and height when calculating
		 * since images that are not a multiple of the
		 * horizontal/vertical subsampling area include
		 * YCbCr data for the extended image.
		 */
		uint16 ycbcrsubsampling[2];
		uint16 samplingblock_samples;
		uint32 samplingblocks_hor;
		uint32 samplingblocks_ver;
		uint64 samplingrow_samples;
		uint64 samplingrow_size;
		TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,ycbcrsubsampling+0,
		    ycbcrsubsampling+1);
		if ((ycbcrsubsampling[0] != 1 && ycbcrsubsampling[0] != 2 && ycbcrsubsampling[0] != 4)
		    ||(ycbcrsubsampling[1] != 1 && ycbcrsubsampling[1] != 2 && ycbcrsubsampling[1] != 4))
		{
			TIFFErrorExt(tif->tif_clientdata,module,
				     "Invalid YCbCr subsampling (%dx%d)",
				     ycbcrsubsampling[0],
				     ycbcrsubsampling[1] );
			return 0;
		}
		samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
		samplingblocks_hor=TIFFhowmany_32(td->td_tilewidth,ycbcrsubsampling[0]);
		samplingblocks_ver=TIFFhowmany_32(nrows,ycbcrsubsampling[1]);
		samplingrow_samples=_TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
		samplingrow_size=TIFFhowmany8_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module));
		return(_TIFFMultiply64(tif,samplingrow_size,samplingblocks_ver,module));
	}
	else
		return(_TIFFMultiply64(tif,nrows,TIFFTileRowSize64(tif),module));
}
tmsize_t
TIFFVTileSize(TIFF* tif, uint32 nrows)
{
	static const char module[] = "TIFFVTileSize";
	uint64 m;
	tmsize_t n;
	m=TIFFVTileSize64(tif,nrows);
	n=(tmsize_t)m;
	if ((uint64)n!=m)
	{
		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
		n=0;
	}
	return(n);
}

/*
 * Compute the # bytes in a row-aligned tile.
 */
uint64
TIFFTileSize64(TIFF* tif)
{
	return (TIFFVTileSize64(tif, tif->tif_dir.td_tilelength));
}
tmsize_t
TIFFTileSize(TIFF* tif)
{
	static const char module[] = "TIFFTileSize";
	uint64 m;
	tmsize_t n;
	m=TIFFTileSize64(tif);
	n=(tmsize_t)m;
	if ((uint64)n!=m)
	{
		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
		n=0;
	}
	return(n);
}

/*
 * Compute a default tile size based on the image
 * characteristics and a requested value.  If a
 * request is <1 then we choose a size according
 * to certain heuristics.
 */
void
TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
{
	(*tif->tif_deftilesize)(tif, tw, th);
}

void
_TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
{
	(void) tif;
	if (*(int32*) tw < 1)
		*tw = 256;
	if (*(int32*) th < 1)
		*th = 256;
	/* roundup to a multiple of 16 per the spec */
	if (*tw & 0xf)
		*tw = TIFFroundup_32(*tw, 16);
	if (*th & 0xf)
		*th = TIFFroundup_32(*th, 16);
}

/* vim: set ts=8 sts=8 sw=8 noet: */
/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 8
 * fill-column: 78
 * End:
 */
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	* Tiled Image Support Routines.
	31	*/
	32	#include "tiffiop.h"
	33
	34	/*
	35	* Compute which tile an (x,y,z,s) value is in.
	36	*/
	37	uint32
	38	TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
	39	{
	40	TIFFDirectory *td = &tif->tif_dir;
	41	uint32 dx = td->td_tilewidth;
	42	uint32 dy = td->td_tilelength;
	43	uint32 dz = td->td_tiledepth;
	44	uint32 tile = 1;
	45
	46	if (td->td_imagedepth == 1)
	47	z = 0;
	48	if (dx == (uint32) -1)
	49	dx = td->td_imagewidth;
	50	if (dy == (uint32) -1)
	51	dy = td->td_imagelength;
	52	if (dz == (uint32) -1)
	53	dz = td->td_imagedepth;
	54	if (dx != 0 && dy != 0 && dz != 0) {
	55	uint32 xpt = TIFFhowmany_32(td->td_imagewidth, dx);
	56	uint32 ypt = TIFFhowmany_32(td->td_imagelength, dy);
	57	uint32 zpt = TIFFhowmany_32(td->td_imagedepth, dz);
	58
	59	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
	60	tile = (xptyptzpt)*s +
	61	(xptypt)(z/dz) +
	62	xpt*(y/dy) +
	63	x/dx;
	64	else
	65	tile = (xptypt)(z/dz) + xpt*(y/dy) + x/dx;
	66	}
	67	return (tile);
	68	}
	69
	70	/*
	71	* Check an (x,y,z,s) coordinate
	72	* against the image bounds.
	73	*/
	74	int
	75	TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
	76	{
	77	TIFFDirectory *td = &tif->tif_dir;
	78
	79	if (x >= td->td_imagewidth) {
	80	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
	81	"%lu: Col out of range, max %lu",
	82	(unsigned long) x,
	83	(unsigned long) (td->td_imagewidth - 1));
	84	return (0);
	85	}
	86	if (y >= td->td_imagelength) {
	87	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
	88	"%lu: Row out of range, max %lu",
	89	(unsigned long) y,
	90	(unsigned long) (td->td_imagelength - 1));
	91	return (0);
	92	}
	93	if (z >= td->td_imagedepth) {
	94	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
	95	"%lu: Depth out of range, max %lu",
	96	(unsigned long) z,
	97	(unsigned long) (td->td_imagedepth - 1));
	98	return (0);
	99	}
	100	if (td->td_planarconfig == PLANARCONFIG_SEPARATE &&
	101	s >= td->td_samplesperpixel) {
	102	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
	103	"%lu: Sample out of range, max %lu",
	104	(unsigned long) s,
	105	(unsigned long) (td->td_samplesperpixel - 1));
	106	return (0);
	107	}
	108	return (1);
	109	}
	110
	111	/*
	112	* Compute how many tiles are in an image.
	113	*/
	114	uint32
	115	TIFFNumberOfTiles(TIFF* tif)
	116	{
	117	TIFFDirectory *td = &tif->tif_dir;
	118	uint32 dx = td->td_tilewidth;
	119	uint32 dy = td->td_tilelength;
	120	uint32 dz = td->td_tiledepth;
	121	uint32 ntiles;
	122
	123	if (dx == (uint32) -1)
	124	dx = td->td_imagewidth;
	125	if (dy == (uint32) -1)
	126	dy = td->td_imagelength;
	127	if (dz == (uint32) -1)
	128	dz = td->td_imagedepth;
	129	ntiles = (dx == 0 \|\| dy == 0 \|\| dz == 0) ? 0 :
	130	_TIFFMultiply32(tif, _TIFFMultiply32(tif, TIFFhowmany_32(td->td_imagewidth, dx),
	131	TIFFhowmany_32(td->td_imagelength, dy),
	132	"TIFFNumberOfTiles"),
	133	TIFFhowmany_32(td->td_imagedepth, dz), "TIFFNumberOfTiles");
	134	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
	135	ntiles = _TIFFMultiply32(tif, ntiles, td->td_samplesperpixel,
	136	"TIFFNumberOfTiles");
	137	return (ntiles);
	138	}
	139
	140	/*
	141	* Compute the # bytes in each row of a tile.
	142	*/
	143	uint64
	144	TIFFTileRowSize64(TIFF* tif)
	145	{
	146	TIFFDirectory *td = &tif->tif_dir;
	147	uint64 rowsize;
	148
	149	if (td->td_tilelength == 0 \|\| td->td_tilewidth == 0)
	150	return (0);
	151	rowsize = _TIFFMultiply64(tif, td->td_bitspersample, td->td_tilewidth,
	152	"TIFFTileRowSize");
	153	if (td->td_planarconfig == PLANARCONFIG_CONTIG)
	154	rowsize = _TIFFMultiply64(tif, rowsize, td->td_samplesperpixel,
	155	"TIFFTileRowSize");
	156	return (TIFFhowmany8_64(rowsize));
	157	}
	158	tmsize_t
	159	TIFFTileRowSize(TIFF* tif)
	160	{
	161	static const char module[] = "TIFFTileRowSize";
	162	uint64 m;
	163	tmsize_t n;
	164	m=TIFFTileRowSize64(tif);
	165	n=(tmsize_t)m;
	166	if ((uint64)n!=m)
	167	{
	168	TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
	169	n=0;
	170	}
	171	return(n);
	172	}
	173
	174	/*
	175	* Compute the # bytes in a variable length, row-aligned tile.
	176	*/
	177	uint64
	178	TIFFVTileSize64(TIFF* tif, uint32 nrows)
	179	{
	180	static const char module[] = "TIFFVTileSize64";
	181	TIFFDirectory *td = &tif->tif_dir;
	182	if (td->td_tilelength == 0 \|\| td->td_tilewidth == 0 \|\|
	183	td->td_tiledepth == 0)
	184	return (0);
	185	if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
	186	(td->td_photometric==PHOTOMETRIC_YCBCR)&&
	187	(td->td_samplesperpixel==3)&&
	188	(!isUpSampled(tif)))
	189	{
	190	/*
	191	* Packed YCbCr data contain one Cb+Cr for every
	192	* HorizontalSampling*VerticalSampling Y values.
	193	* Must also roundup width and height when calculating
	194	* since images that are not a multiple of the
	195	* horizontal/vertical subsampling area include
	196	* YCbCr data for the extended image.
	197	*/
	198	uint16 ycbcrsubsampling[2];
	199	uint16 samplingblock_samples;
	200	uint32 samplingblocks_hor;
	201	uint32 samplingblocks_ver;
	202	uint64 samplingrow_samples;
	203	uint64 samplingrow_size;
	204	TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,ycbcrsubsampling+0,
	205	ycbcrsubsampling+1);
	206	if ((ycbcrsubsampling[0] != 1 && ycbcrsubsampling[0] != 2 && ycbcrsubsampling[0] != 4)
	207	\|\|(ycbcrsubsampling[1] != 1 && ycbcrsubsampling[1] != 2 && ycbcrsubsampling[1] != 4))
	208	{
	209	TIFFErrorExt(tif->tif_clientdata,module,
	210	"Invalid YCbCr subsampling (%dx%d)",
	211	ycbcrsubsampling[0],
	212	ycbcrsubsampling[1] );
	213	return 0;
	214	}
	215	samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
	216	samplingblocks_hor=TIFFhowmany_32(td->td_tilewidth,ycbcrsubsampling[0]);
	217	samplingblocks_ver=TIFFhowmany_32(nrows,ycbcrsubsampling[1]);
	218	samplingrow_samples=_TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
	219	samplingrow_size=TIFFhowmany8_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module));
	220	return(_TIFFMultiply64(tif,samplingrow_size,samplingblocks_ver,module));
	221	}
	222	else
	223	return(_TIFFMultiply64(tif,nrows,TIFFTileRowSize64(tif),module));
	224	}
	225	tmsize_t
	226	TIFFVTileSize(TIFF* tif, uint32 nrows)
	227	{
	228	static const char module[] = "TIFFVTileSize";
	229	uint64 m;
	230	tmsize_t n;
	231	m=TIFFVTileSize64(tif,nrows);
	232	n=(tmsize_t)m;
	233	if ((uint64)n!=m)
	234	{
	235	TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
	236	n=0;
	237	}
	238	return(n);
	239	}
	240
	241	/*
	242	* Compute the # bytes in a row-aligned tile.
	243	*/
	244	uint64
	245	TIFFTileSize64(TIFF* tif)
	246	{
	247	return (TIFFVTileSize64(tif, tif->tif_dir.td_tilelength));
	248	}
	249	tmsize_t
	250	TIFFTileSize(TIFF* tif)
	251	{
	252	static const char module[] = "TIFFTileSize";
	253	uint64 m;
	254	tmsize_t n;
	255	m=TIFFTileSize64(tif);
	256	n=(tmsize_t)m;
	257	if ((uint64)n!=m)
	258	{
	259	TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
	260	n=0;
	261	}
	262	return(n);
	263	}
	264
	265	/*
	266	* Compute a default tile size based on the image
	267	* characteristics and a requested value. If a
	268	* request is <1 then we choose a size according
	269	* to certain heuristics.
	270	*/
	271	void
	272	TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
	273	{
	274	(*tif->tif_deftilesize)(tif, tw, th);
	275	}
	276
	277	void
	278	_TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th)
	279	{
	280	(void) tif;
	281	if ((int32) tw < 1)
	282	*tw = 256;
	283	if ((int32) th < 1)
	284	*th = 256;
	285	/* roundup to a multiple of 16 per the spec */
	286	if (*tw & 0xf)
	287	tw = TIFFroundup_32(tw, 16);
	288	if (*th & 0xf)
	289	th = TIFFroundup_32(th, 16);
	290	}
	291
	292	/* vim: set ts=8 sts=8 sw=8 noet: */
	293	/*
	294	* Local Variables:
	295	* mode: c
	296	* c-basic-offset: 8
	297	* fill-column: 78
	298	* End:
	299	*/