third_party/libtiff/tif_swab.c - platform/external/pdfium - Gitiles

 /* $Id: tif_swab.c,v 1.14 2016-09-04 21:32:56 erouault 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 Bit & Byte Swapping Support.
  *
  * XXX We assume short = 16-bits and long = 32-bits XXX
  */
 #include "tiffiop.h"

 #ifndef TIFFSwabShort
 void
 TIFFSwabShort(uint16* wp)
 {
 	register unsigned char* cp = (unsigned char*) wp;
 	unsigned char t;
 	assert(sizeof(uint16)==2);
 	t = cp[1]; cp[1] = cp[0]; cp[0] = t;
 }
 #endif

 #ifndef TIFFSwabLong
 void
 TIFFSwabLong(uint32* lp)
 {
 	register unsigned char* cp = (unsigned char*) lp;
 	unsigned char t;
 	assert(sizeof(uint32)==4);
 	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
 	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
 }
 #endif

 #ifndef TIFFSwabLong8
 void
 TIFFSwabLong8(uint64* lp)
 {
 	register unsigned char* cp = (unsigned char*) lp;
 	unsigned char t;
 	assert(sizeof(uint64)==8);
 	t = cp[7]; cp[7] = cp[0]; cp[0] = t;
 	t = cp[6]; cp[6] = cp[1]; cp[1] = t;
 	t = cp[5]; cp[5] = cp[2]; cp[2] = t;
 	t = cp[4]; cp[4] = cp[3]; cp[3] = t;
 }
 #endif

 #ifndef TIFFSwabArrayOfShort
 void
 TIFFSwabArrayOfShort(register uint16* wp, tmsize_t n)
 {
 	register unsigned char* cp;
 	register unsigned char t;
 	assert(sizeof(uint16)==2);
 	/* XXX unroll loop some */
 	while (n-- > 0) {
 		cp = (unsigned char*) wp;
 		t = cp[1]; cp[1] = cp[0]; cp[0] = t;
 		wp++;
 	}
 }
 #endif

 #ifndef TIFFSwabArrayOfTriples
 void
 TIFFSwabArrayOfTriples(register uint8* tp, tmsize_t n)
 {
 	unsigned char* cp;
 	unsigned char t;

 	/* XXX unroll loop some */
 	while (n-- > 0) {
 		cp = (unsigned char*) tp;
 		t = cp[2]; cp[2] = cp[0]; cp[0] = t;
 		tp += 3;
 	}
 }
 #endif

 #ifndef TIFFSwabArrayOfLong
 void
 TIFFSwabArrayOfLong(register uint32* lp, tmsize_t n)
 {
 	register unsigned char *cp;
 	register unsigned char t;
 	assert(sizeof(uint32)==4);
 	/* XXX unroll loop some */
 	while (n-- > 0) {
 		cp = (unsigned char *)lp;
 		t = cp[3]; cp[3] = cp[0]; cp[0] = t;
 		t = cp[2]; cp[2] = cp[1]; cp[1] = t;
 		lp++;
 	}
 }
 #endif

 #ifndef TIFFSwabArrayOfLong8
 void
 TIFFSwabArrayOfLong8(register uint64* lp, tmsize_t n)
 {
 	register unsigned char *cp;
 	register unsigned char t;
 	assert(sizeof(uint64)==8);
 	/* XXX unroll loop some */
 	while (n-- > 0) {
 		cp = (unsigned char *)lp;
 		t = cp[7]; cp[7] = cp[0]; cp[0] = t;
 		t = cp[6]; cp[6] = cp[1]; cp[1] = t;
 		t = cp[5]; cp[5] = cp[2]; cp[2] = t;
 		t = cp[4]; cp[4] = cp[3]; cp[3] = t;
 		lp++;
 	}
 }
 #endif

 #ifndef TIFFSwabFloat
 void
 TIFFSwabFloat(float* fp)
 {
 	register unsigned char* cp = (unsigned char*) fp;
 	unsigned char t;
 	assert(sizeof(float)==4);
 	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
 	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
 }
 #endif

 #ifndef TIFFSwabArrayOfFloat
 void
 TIFFSwabArrayOfFloat(register float* fp, tmsize_t n)
 {
 	register unsigned char *cp;
 	register unsigned char t;
 	assert(sizeof(float)==4);
 	/* XXX unroll loop some */
 	while (n-- > 0) {
 		cp = (unsigned char *)fp;
 		t = cp[3]; cp[3] = cp[0]; cp[0] = t;
 		t = cp[2]; cp[2] = cp[1]; cp[1] = t;
 		fp++;
 	}
 }
 #endif

 #ifndef TIFFSwabDouble
 void
 TIFFSwabDouble(double *dp)
 {
 	register unsigned char* cp = (unsigned char*) dp;
 	unsigned char t;
 	assert(sizeof(double)==8);
 	t = cp[7]; cp[7] = cp[0]; cp[0] = t;
 	t = cp[6]; cp[6] = cp[1]; cp[1] = t;
 	t = cp[5]; cp[5] = cp[2]; cp[2] = t;
 	t = cp[4]; cp[4] = cp[3]; cp[3] = t;
 }
 #endif

 #ifndef TIFFSwabArrayOfDouble
 void
 TIFFSwabArrayOfDouble(double* dp, tmsize_t n)
 {
 	register unsigned char *cp;
 	register unsigned char t;
 	assert(sizeof(double)==8);
 	/* XXX unroll loop some */
 	while (n-- > 0) {
 		cp = (unsigned char *)dp;
 		t = cp[7]; cp[7] = cp[0]; cp[0] = t;
 		t = cp[6]; cp[6] = cp[1]; cp[1] = t;
 		t = cp[5]; cp[5] = cp[2]; cp[2] = t;
 		t = cp[4]; cp[4] = cp[3]; cp[3] = t;
 		dp++;
 	}
 }
 #endif

 /*
  * Bit reversal tables.  TIFFBitRevTable[<byte>] gives
  * the bit reversed value of <byte>.  Used in various
  * places in the library when the FillOrder requires
  * bit reversal of byte values (e.g. CCITT Fax 3
  * encoding/decoding).  TIFFNoBitRevTable is provided
  * for algorithms that want an equivalent table that
  * do not reverse bit values.
  */
 static const unsigned char TIFFBitRevTable[256] = {
     0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
     0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
     0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
     0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
     0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
     0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
     0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
     0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
     0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
     0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
     0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
     0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
     0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
     0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
     0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
     0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
     0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
     0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
     0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
     0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
     0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
     0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
     0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
     0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
     0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
     0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
     0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
     0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
     0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
     0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
     0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
     0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
 };
 static const unsigned char TIFFNoBitRevTable[256] = {
     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
     0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
     0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
     0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
     0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
     0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
     0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
     0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
     0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
     0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
     0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
     0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
     0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
     0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
     0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
     0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
     0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
     0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
     0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
     0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
     0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
     0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
     0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
     0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
     0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
     0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
     0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
     0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
     0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
     0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
 };

 const unsigned char*
 TIFFGetBitRevTable(int reversed)
 {
 	return (reversed ? TIFFBitRevTable : TIFFNoBitRevTable);
 }

 void
 TIFFReverseBits(uint8* cp, tmsize_t n)
 {
 	for (; n > 8; n -= 8) {
 		cp[0] = TIFFBitRevTable[cp[0]];
 		cp[1] = TIFFBitRevTable[cp[1]];
 		cp[2] = TIFFBitRevTable[cp[2]];
 		cp[3] = TIFFBitRevTable[cp[3]];
 		cp[4] = TIFFBitRevTable[cp[4]];
 		cp[5] = TIFFBitRevTable[cp[5]];
 		cp[6] = TIFFBitRevTable[cp[6]];
 		cp[7] = TIFFBitRevTable[cp[7]];
 		cp += 8;
 	}
 	while (n-- > 0) {
 		*cp = TIFFBitRevTable[*cp];
 		cp++;
 	}
 }

 /* vim: set ts=8 sts=8 sw=8 noet: */
 /*
  * Local Variables:
  * mode: c
  * c-basic-offset: 8
  * fill-column: 78
  * End:
  */
	/* $Id: tif_swab.c,v 1.14 2016-09-04 21:32:56 erouault 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 Bit & Byte Swapping Support.
	*
	* XXX We assume short = 16-bits and long = 32-bits XXX
	*/
	#include "tiffiop.h"

	#ifndef TIFFSwabShort
	void
	TIFFSwabShort(uint16* wp)
	{
	register unsigned char* cp = (unsigned char*) wp;
	unsigned char t;
	assert(sizeof(uint16)==2);
	t = cp[1]; cp[1] = cp[0]; cp[0] = t;
	}
	#endif

	#ifndef TIFFSwabLong
	void
	TIFFSwabLong(uint32* lp)
	{
	register unsigned char* cp = (unsigned char*) lp;
	unsigned char t;
	assert(sizeof(uint32)==4);
	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
	}
	#endif

	#ifndef TIFFSwabLong8
	void
	TIFFSwabLong8(uint64* lp)
	{
	register unsigned char* cp = (unsigned char*) lp;
	unsigned char t;
	assert(sizeof(uint64)==8);
	t = cp[7]; cp[7] = cp[0]; cp[0] = t;
	t = cp[6]; cp[6] = cp[1]; cp[1] = t;
	t = cp[5]; cp[5] = cp[2]; cp[2] = t;
	t = cp[4]; cp[4] = cp[3]; cp[3] = t;
	}
	#endif

	#ifndef TIFFSwabArrayOfShort
	void
	TIFFSwabArrayOfShort(register uint16* wp, tmsize_t n)
	{
	register unsigned char* cp;
	register unsigned char t;
	assert(sizeof(uint16)==2);
	/* XXX unroll loop some */
	while (n-- > 0) {
	cp = (unsigned char*) wp;
	t = cp[1]; cp[1] = cp[0]; cp[0] = t;
	wp++;
	}
	}
	#endif

	#ifndef TIFFSwabArrayOfTriples
	void
	TIFFSwabArrayOfTriples(register uint8* tp, tmsize_t n)
	{
	unsigned char* cp;
	unsigned char t;

	/* XXX unroll loop some */
	while (n-- > 0) {
	cp = (unsigned char*) tp;
	t = cp[2]; cp[2] = cp[0]; cp[0] = t;
	tp += 3;
	}
	}
	#endif

	#ifndef TIFFSwabArrayOfLong
	void
	TIFFSwabArrayOfLong(register uint32* lp, tmsize_t n)
	{
	register unsigned char *cp;
	register unsigned char t;
	assert(sizeof(uint32)==4);
	/* XXX unroll loop some */
	while (n-- > 0) {
	cp = (unsigned char *)lp;
	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
	lp++;
	}
	}
	#endif

	#ifndef TIFFSwabArrayOfLong8
	void
	TIFFSwabArrayOfLong8(register uint64* lp, tmsize_t n)
	{
	register unsigned char *cp;
	register unsigned char t;
	assert(sizeof(uint64)==8);
	/* XXX unroll loop some */
	while (n-- > 0) {
	cp = (unsigned char *)lp;
	t = cp[7]; cp[7] = cp[0]; cp[0] = t;
	t = cp[6]; cp[6] = cp[1]; cp[1] = t;
	t = cp[5]; cp[5] = cp[2]; cp[2] = t;
	t = cp[4]; cp[4] = cp[3]; cp[3] = t;
	lp++;
	}
	}
	#endif

	#ifndef TIFFSwabFloat
	void
	TIFFSwabFloat(float* fp)
	{
	register unsigned char* cp = (unsigned char*) fp;
	unsigned char t;
	assert(sizeof(float)==4);
	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
	}
	#endif

	#ifndef TIFFSwabArrayOfFloat
	void
	TIFFSwabArrayOfFloat(register float* fp, tmsize_t n)
	{
	register unsigned char *cp;
	register unsigned char t;
	assert(sizeof(float)==4);
	/* XXX unroll loop some */
	while (n-- > 0) {
	cp = (unsigned char *)fp;
	t = cp[3]; cp[3] = cp[0]; cp[0] = t;
	t = cp[2]; cp[2] = cp[1]; cp[1] = t;
	fp++;
	}
	}
	#endif

	#ifndef TIFFSwabDouble
	void
	TIFFSwabDouble(double *dp)
	{
	register unsigned char* cp = (unsigned char*) dp;
	unsigned char t;
	assert(sizeof(double)==8);
	t = cp[7]; cp[7] = cp[0]; cp[0] = t;
	t = cp[6]; cp[6] = cp[1]; cp[1] = t;
	t = cp[5]; cp[5] = cp[2]; cp[2] = t;
	t = cp[4]; cp[4] = cp[3]; cp[3] = t;
	}
	#endif

	#ifndef TIFFSwabArrayOfDouble
	void
	TIFFSwabArrayOfDouble(double* dp, tmsize_t n)
	{
	register unsigned char *cp;
	register unsigned char t;
	assert(sizeof(double)==8);
	/* XXX unroll loop some */
	while (n-- > 0) {
	cp = (unsigned char *)dp;
	t = cp[7]; cp[7] = cp[0]; cp[0] = t;
	t = cp[6]; cp[6] = cp[1]; cp[1] = t;
	t = cp[5]; cp[5] = cp[2]; cp[2] = t;
	t = cp[4]; cp[4] = cp[3]; cp[3] = t;
	dp++;
	}
	}
	#endif

	/*
	* Bit reversal tables. TIFFBitRevTable[<byte>] gives
	* the bit reversed value of <byte>. Used in various
	* places in the library when the FillOrder requires
	* bit reversal of byte values (e.g. CCITT Fax 3
	* encoding/decoding). TIFFNoBitRevTable is provided
	* for algorithms that want an equivalent table that
	* do not reverse bit values.
	*/
	static const unsigned char TIFFBitRevTable[256] = {
	0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
	0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
	0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
	0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
	0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
	0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
	0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
	0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
	0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
	0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
	0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
	0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
	0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
	0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
	0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
	0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
	0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
	0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
	0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
	0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
	0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
	0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
	0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
	0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
	0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
	0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
	0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
	0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
	0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
	0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
	0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
	0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
	};
	static const unsigned char TIFFNoBitRevTable[256] = {
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
	0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
	0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
	0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
	0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
	0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
	0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
	};

	const unsigned char*
	TIFFGetBitRevTable(int reversed)
	{
	return (reversed ? TIFFBitRevTable : TIFFNoBitRevTable);
	}

	void
	TIFFReverseBits(uint8* cp, tmsize_t n)
	{
	for (; n > 8; n -= 8) {
	cp[0] = TIFFBitRevTable[cp[0]];
	cp[1] = TIFFBitRevTable[cp[1]];
	cp[2] = TIFFBitRevTable[cp[2]];
	cp[3] = TIFFBitRevTable[cp[3]];
	cp[4] = TIFFBitRevTable[cp[4]];
	cp[5] = TIFFBitRevTable[cp[5]];
	cp[6] = TIFFBitRevTable[cp[6]];
	cp[7] = TIFFBitRevTable[cp[7]];
	cp += 8;
	}
	while (n-- > 0) {
	cp = TIFFBitRevTable[cp];
	cp++;
	}
	}

	/* vim: set ts=8 sts=8 sw=8 noet: */
	/*
	* Local Variables:
	* mode: c
	* c-basic-offset: 8
	* fill-column: 78
	* End:
	*/