XFA: Upgrade to libtiff 4.0.6.

R=jun_fang@foxitsoftware.com, tsepez@chromium.org

Review URL: https://codereview.chromium.org/1563103002 .

1 files changed, 0 insertions, 1114 deletions

diff --git a/third_party/tiff_v403/tif_read.c b/third_party/tiff_v403/tif_read.c
deleted file mode 100644
index eb9350846e..0000000000
--- a/third_party/tiff_v403/tif_read.c
+++ /dev/null
@@ -1,1114 +0,0 @@
-/* $Id: tif_read.c,v 1.41 2012-07-06 19:22:58 bfriesen 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.
- * Scanline-oriented Read Support
- */
-#include "tiffiop.h"
-#include <stdio.h>
-
-int TIFFFillStrip(TIFF* tif, uint32 strip);
-int TIFFFillTile(TIFF* tif, uint32 tile);
-static int TIFFStartStrip(TIFF* tif, uint32 strip);
-static int TIFFStartTile(TIFF* tif, uint32 tile);
-static int TIFFCheckRead(TIFF*, int);
-static tmsize_t
-TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,const char* module);
-
-#define NOSTRIP ((uint32)(-1))       /* undefined state */
-#define NOTILE ((uint32)(-1))         /* undefined state */
-
-static int
-TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
-{
-	static const char module[] = "TIFFFillStripPartial";
-	register TIFFDirectory *td = &tif->tif_dir;
-        uint64 unused_data;
-        uint64 read_offset;
-        tmsize_t cc, to_read;
-        /* tmsize_t bytecountm; */
-        
-        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
-            return 0;
-        
-        /*
-         * Expand raw data buffer, if needed, to hold data
-         * strip coming from file (perhaps should set upper
-         * bound on the size of a buffer we'll use?).
-         */
-
-        /* bytecountm=(tmsize_t) td->td_stripbytecount[strip]; */
-        if (read_ahead*2 > tif->tif_rawdatasize) {
-                assert( restart );
-                
-                tif->tif_curstrip = NOSTRIP;
-                if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
-                        TIFFErrorExt(tif->tif_clientdata, module,
-                                     "Data buffer too small to hold part of strip %lu",
-                                     (unsigned long) strip);
-                        return (0);
-                }
-                if (!TIFFReadBufferSetup(tif, 0, read_ahead*2))
-                        return (0);
-        }
-
-        if( restart )
-        {
-                tif->tif_rawdataloaded = 0;
-                tif->tif_rawdataoff = 0;
-        }
-
-        /*
-        ** If we are reading more data, move any unused data to the
-        ** start of the buffer.
-        */
-        if( tif->tif_rawdataloaded > 0 )
-                unused_data = tif->tif_rawdataloaded - (tif->tif_rawcp - tif->tif_rawdata);
-        else
-                unused_data = 0;
-        
-        if( unused_data > 0 )
-        {
-		assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
-                memmove( tif->tif_rawdata, tif->tif_rawcp, (size_t)unused_data );
-        }
-
-        /*
-        ** Seek to the point in the file where more data should be read.
-        */
-        read_offset = td->td_stripoffset[strip]
-                + tif->tif_rawdataoff + tif->tif_rawdataloaded;
-
-        if (!SeekOK(tif, read_offset)) {
-                TIFFErrorExt(tif->tif_clientdata, module,
-                             "Seek error at scanline %lu, strip %lu",
-                             (unsigned long) tif->tif_row, (unsigned long) strip);
-                return 0;
-        }
-
-        /*
-        ** How much do we want to read?
-        */
-        to_read = (tmsize_t)(tif->tif_rawdatasize - unused_data);
-        if( (uint64) to_read > td->td_stripbytecount[strip] 
-            - tif->tif_rawdataoff - tif->tif_rawdataloaded )
-        {
-                to_read = (tmsize_t)(td->td_stripbytecount[strip]
-                        - tif->tif_rawdataoff - tif->tif_rawdataloaded);
-        }
-
-	assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
-        cc = TIFFReadFile(tif, tif->tif_rawdata + unused_data, to_read);
-
-        if (cc != to_read) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-                TIFFErrorExt(tif->tif_clientdata, module,
-                             "Read error at scanline %lu; got %I64u bytes, expected %I64u",
-                             (unsigned long) tif->tif_row,
-                             (unsigned __int64) cc,
-                             (unsigned __int64) to_read);
-#else
-                TIFFErrorExt(tif->tif_clientdata, module,
-                             "Read error at scanline %lu; got %llu bytes, expected %llu",
-                             (unsigned long) tif->tif_row,
-                             (unsigned long long) cc,
-                             (unsigned long long) to_read);
-#endif
-                return 0;
-        }
-        
-        tif->tif_rawdataoff = (tmsize_t)(tif->tif_rawdataoff + tif->tif_rawdataloaded - unused_data) ;
-        tif->tif_rawdataloaded = (tmsize_t)unused_data + to_read;
-
-        tif->tif_rawcp = tif->tif_rawdata;
-                        
-        if (!isFillOrder(tif, td->td_fillorder) &&
-            (tif->tif_flags & TIFF_NOBITREV) == 0) {
-		assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
-                TIFFReverseBits(tif->tif_rawdata + unused_data, to_read );
-	}
-
-        /*
-        ** When starting a strip from the beginning we need to
-        ** restart the decoder.
-        */
-        if( restart )
-                return TIFFStartStrip(tif, strip);
-        else
-                return 1;
-}
-
-/*
- * Seek to a random row+sample in a file.
- *
- * Only used by TIFFReadScanline, and is only used on
- * strip organized files.  We do some tricky stuff to try
- * and avoid reading the whole compressed raw data for big
- * strips.
- */
-static int
-TIFFSeek(TIFF* tif, uint32 row, uint16 sample )
-{
-	register TIFFDirectory *td = &tif->tif_dir;
-	uint32 strip;
-        int    whole_strip;
-	tmsize_t read_ahead = 0;
-
-        /*
-        ** Establish what strip we are working from.
-        */
-	if (row >= td->td_imagelength) {	/* out of range */
-		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
-		    "%lu: Row out of range, max %lu",
-		    (unsigned long) row,
-		    (unsigned long) td->td_imagelength);
-		return (0);
-	}
-	if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
-		if (sample >= td->td_samplesperpixel) {
-			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
-			    "%lu: Sample out of range, max %lu",
-			    (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
-			return (0);
-		}
-		strip = (uint32)sample*td->td_stripsperimage + row/td->td_rowsperstrip;
-	} else
-		strip = row / td->td_rowsperstrip;
-
-        /*
-         * Do we want to treat this strip as one whole chunk or
-         * read it a few lines at a time?
-         */
-#if defined(CHUNKY_STRIP_READ_SUPPORT)
-        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
-            return 0;
-        whole_strip = tif->tif_dir.td_stripbytecount[strip] < 10
-                || isMapped(tif);
-#else
-        whole_strip = 1;
-#endif
-        
-        if( !whole_strip )
-        {
-                read_ahead = tif->tif_scanlinesize * 16 + 5000;
-        }
-
-        /*
-         * If we haven't loaded this strip, do so now, possibly
-         * only reading the first part.
-         */
-	if (strip != tif->tif_curstrip) {	/* different strip, refill */
-                
-                if( whole_strip )
-                {
-                        if (!TIFFFillStrip(tif, strip))
-                                return (0);
-                }
-                else
-                {
-                        if( !TIFFFillStripPartial(tif,strip,read_ahead,1) )
-                                return 0;
-                }
-	}
-
-        /*
-        ** If we already have some data loaded, do we need to read some more?
-        */
-        else if( !whole_strip )
-        {
-                if( ((tif->tif_rawdata + tif->tif_rawdataloaded) - tif->tif_rawcp) < read_ahead 
-                    && (uint64) tif->tif_rawdataoff+tif->tif_rawdataloaded < td->td_stripbytecount[strip] )
-                {
-                        if( !TIFFFillStripPartial(tif,strip,read_ahead,0) )
-                                return 0;
-                }
-        }
-
-        if (row < tif->tif_row) {
-		/*
-		 * Moving backwards within the same strip: backup
-		 * to the start and then decode forward (below).
-		 *
-		 * NB: If you're planning on lots of random access within a
-		 * strip, it's better to just read and decode the entire
-		 * strip, and then access the decoded data in a random fashion.
-		 */
-
-                if( tif->tif_rawdataoff != 0 )
-                {
-                        if( !TIFFFillStripPartial(tif,strip,read_ahead,1) )
-                                return 0;
-                }
-                else
-                {
-                        if (!TIFFStartStrip(tif, strip))
-                                return (0);
-                }
-	}
-        
-	if (row != tif->tif_row) {
-		/*
-		 * Seek forward to the desired row.
-		 */
-
-                /* TODO: Will this really work with partial buffers? */
-                
-		if (!(*tif->tif_seek)(tif, row - tif->tif_row))
-			return (0);
-		tif->tif_row = row;
-	}
-
-	return (1);
-}
-
-int
-TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
-{
-	int e;
-
-	if (!TIFFCheckRead(tif, 0))
-		return (-1);
-	if( (e = TIFFSeek(tif, row, sample)) != 0) {
-		/*
-		 * Decompress desired row into user buffer.
-		 */
-		e = (*tif->tif_decoderow)
-		    (tif, (uint8*) buf, tif->tif_scanlinesize, sample);  
-
-		/* we are now poised at the beginning of the next row */
-		tif->tif_row = row + 1;
-
-		if (e)
-			(*tif->tif_postdecode)(tif, (uint8*) buf,
-			    tif->tif_scanlinesize);  
-	}
-	return (e > 0 ? 1 : -1);
-}
-
-/*
- * Read a strip of data and decompress the specified
- * amount into the user-supplied buffer.
- */
-tmsize_t
-TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size)
-{
-	static const char module[] = "TIFFReadEncodedStrip";
-	TIFFDirectory *td = &tif->tif_dir;
-	uint32 rowsperstrip;
-	uint32 stripsperplane;
-	uint32 stripinplane;
-	uint16 plane, comp;
-	uint32 rows;
-	tmsize_t stripsize;
-	if (!TIFFCheckRead(tif,0))
-		return((tmsize_t)(-1));
-	if (strip>=td->td_nstrips)
-	{
-		TIFFErrorExt(tif->tif_clientdata,module,
-		    "%lu: Strip out of range, max %lu",(unsigned long)strip,
-		    (unsigned long)td->td_nstrips);
-		return((tmsize_t)(-1));
-	}
-	/*
-	 * Calculate the strip size according to the number of
-	 * rows in the strip (check for truncated last strip on any
-	 * of the separations).
-	 */
-	rowsperstrip=td->td_rowsperstrip;
-	if (rowsperstrip>td->td_imagelength)
-		rowsperstrip=td->td_imagelength;
-	stripsperplane=((td->td_imagelength+rowsperstrip-1)/rowsperstrip);
-	stripinplane=(strip%stripsperplane);
-	plane=(strip/stripsperplane);
-	rows=td->td_imagelength-stripinplane*rowsperstrip;
-	if (rows>rowsperstrip)
-		rows=rowsperstrip;
-	stripsize=TIFFVStripSize(tif,rows);
-	if (stripsize==0)
-		return((tmsize_t)(-1));
-	if ((size!=(tmsize_t)(-1))&&(size<stripsize))
-		stripsize=size;
-
-	/*
-	 * discard those.
-	 * keep code modified by Changjin Gao.
-	 * Xiaochuan Liu 20100828.
-	 */
-	/*if (!TIFFFillStrip(tif,strip))
-		return((tmsize_t)(-1));
-	if ((*tif->tif_decodestrip)(tif,buf,stripsize,plane)<=0)
-		return((tmsize_t)(-1));
-	(*tif->tif_postdecode)(tif,buf,stripsize);
-	return(stripsize);*/
-	
-	/*
-	* Changjin Gao 20110726 fixed decode error issue.
-	* Test file: mantis #27308 020511-1158450.tiff.
-	*/
-	comp = COMPRESSION_NONE;
-StripDecode:
-	if (TIFFFillStrip(tif, strip) && (*tif->tif_decodestrip)(tif, buf, stripsize, plane) > 0)
-	{
-		(*tif->tif_postdecode)(tif, buf, stripsize);
-		return (stripsize);
-	}
-	else
-	{
-		if (comp < 9)
-		{
-			TIFFSetField(tif, TIFFTAG_COMPRESSION, comp);
-			TIFFSetField(tif, TIFFTAG_FAXMODE,FAXMODE_CLASSIC);
-			comp++;
-			goto StripDecode;
-		}
-
-		return ((tsize_t) -1);
-	}
-}
-
-static tmsize_t
-TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,
-    const char* module)
-{
-	TIFFDirectory *td = &tif->tif_dir;
-
-    if (!_TIFFFillStriles( tif ))
-        return ((tmsize_t)(-1));
-        
-	assert((tif->tif_flags&TIFF_NOREADRAW)==0);
-	if (!isMapped(tif)) {
-		tmsize_t cc;
-
-		if (!SeekOK(tif, td->td_stripoffset[strip])) {
-			TIFFErrorExt(tif->tif_clientdata, module,
-			    "Seek error at scanline %lu, strip %lu",
-			    (unsigned long) tif->tif_row, (unsigned long) strip);
-			return ((tmsize_t)(-1));
-		}
-		cc = TIFFReadFile(tif, buf, size);
-		if (cc != size) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-			TIFFErrorExt(tif->tif_clientdata, module,
-		"Read error at scanline %lu; got %I64u bytes, expected %I64u",
-				     (unsigned long) tif->tif_row,
-				     (unsigned __int64) cc,
-				     (unsigned __int64) size);
-#else
-			TIFFErrorExt(tif->tif_clientdata, module,
-		"Read error at scanline %lu; got %llu bytes, expected %llu",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long long) cc,
-				     (unsigned long long) size);
-#endif
-			return ((tmsize_t)(-1));
-		}
-	} else {
-		tmsize_t ma,mb;
-		tmsize_t n;
-		ma=(tmsize_t)td->td_stripoffset[strip];
-		mb=ma+size;
-		if (((uint64)ma!=td->td_stripoffset[strip])||(ma>tif->tif_size))
-			n=0;
-		else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
-			n=tif->tif_size-ma;
-		else
-			n=size;
-		if (n!=size) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-			TIFFErrorExt(tif->tif_clientdata, module,
-	"Read error at scanline %lu, strip %lu; got %I64u bytes, expected %I64u",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long) strip,
-				     (unsigned __int64) n,
-				     (unsigned __int64) size);
-#else
-			TIFFErrorExt(tif->tif_clientdata, module,
-	"Read error at scanline %lu, strip %lu; got %llu bytes, expected %llu",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long) strip,
-				     (unsigned long long) n,
-				     (unsigned long long) size);
-#endif
-			return ((tmsize_t)(-1));
-		}
-		_TIFFmemcpy(buf, tif->tif_base + ma,
-			    size);
-	}
-	return (size);
-}
-
-/*
- * Read a strip of data from the file.
- */
-tmsize_t
-TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size)
-{
-	static const char module[] = "TIFFReadRawStrip";
-	TIFFDirectory *td = &tif->tif_dir;
-	uint64 bytecount;
-	tmsize_t bytecountm;
-
-	if (!TIFFCheckRead(tif, 0))
-		return ((tmsize_t)(-1));
-	if (strip >= td->td_nstrips) {
-		TIFFErrorExt(tif->tif_clientdata, module,
-		     "%lu: Strip out of range, max %lu",
-		     (unsigned long) strip,
-		     (unsigned long) td->td_nstrips);
-		return ((tmsize_t)(-1));
-	}
-	if (tif->tif_flags&TIFF_NOREADRAW)
-	{
-		TIFFErrorExt(tif->tif_clientdata, module,
-		    "Compression scheme does not support access to raw uncompressed data");
-		return ((tmsize_t)(-1));
-	}
-	bytecount = td->td_stripbytecount[strip];
-	if (bytecount <= 0) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-		TIFFErrorExt(tif->tif_clientdata, module,
-			     "%I64u: Invalid strip byte count, strip %lu",
-			     (unsigned __int64) bytecount,
-			     (unsigned long) strip);
-#else
-		TIFFErrorExt(tif->tif_clientdata, module,
-			     "%llu: Invalid strip byte count, strip %lu",
-			     (unsigned long long) bytecount,
-			     (unsigned long) strip);
-#endif
-		return ((tmsize_t)(-1));
-	}
-	bytecountm = (tmsize_t)bytecount;
-	if ((uint64)bytecountm!=bytecount) {
-		TIFFErrorExt(tif->tif_clientdata, module, "Integer overflow");
-		return ((tmsize_t)(-1));
-	}
-	if (size != (tmsize_t)(-1) && size < bytecountm)
-		bytecountm = size;
-	return (TIFFReadRawStrip1(tif, strip, buf, bytecountm, module));
-}
-
-/*
- * Read the specified strip and setup for decoding. The data buffer is
- * expanded, as necessary, to hold the strip's data.
- */
-int
-TIFFFillStrip(TIFF* tif, uint32 strip)
-{
-	static const char module[] = "TIFFFillStrip";
-	TIFFDirectory *td = &tif->tif_dir;
-
-    if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
-        return 0;
-        
-	if ((tif->tif_flags&TIFF_NOREADRAW)==0)
-	{
-		uint64 bytecount = td->td_stripbytecount[strip];
-		if (bytecount <= 0) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-			TIFFErrorExt(tif->tif_clientdata, module,
-				"Invalid strip byte count %I64u, strip %lu",
-				     (unsigned __int64) bytecount,
-				     (unsigned long) strip);
-#else
-			TIFFErrorExt(tif->tif_clientdata, module,
-				"Invalid strip byte count %llu, strip %lu",
-				     (unsigned long long) bytecount,
-				     (unsigned long) strip);
-#endif
-			return (0);
-		}
-		if (isMapped(tif) &&
-		    (isFillOrder(tif, td->td_fillorder)
-		    || (tif->tif_flags & TIFF_NOBITREV))) {
-			/*
-			 * The image is mapped into memory and we either don't
-			 * need to flip bits or the compression routine is
-			 * going to handle this operation itself.  In this
-			 * case, avoid copying the raw data and instead just
-			 * reference the data from the memory mapped file
-			 * image.  This assumes that the decompression
-			 * routines do not modify the contents of the raw data
-			 * buffer (if they try to, the application will get a
-			 * fault since the file is mapped read-only).
-			 */
-			if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
-				_TIFFfree(tif->tif_rawdata);
-				tif->tif_rawdata = NULL;
-				tif->tif_rawdatasize = 0;
-			}
-			tif->tif_flags &= ~TIFF_MYBUFFER;
-			/*
-			 * We must check for overflow, potentially causing
-			 * an OOB read. Instead of simple
-			 *
-			 *  td->td_stripoffset[strip]+bytecount > tif->tif_size
-			 *
-			 * comparison (which can overflow) we do the following
-			 * two comparisons:
-			 */
-			if (bytecount > (uint64)tif->tif_size ||
-			    td->td_stripoffset[strip] > (uint64)tif->tif_size - bytecount) {
-				/*
-				 * This error message might seem strange, but
-				 * it's what would happen if a read were done
-				 * instead.
-				 */
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-				TIFFErrorExt(tif->tif_clientdata, module,
-
-					"Read error on strip %lu; "
-					"got %I64u bytes, expected %I64u",
-					(unsigned long) strip,
-					(unsigned __int64) tif->tif_size - td->td_stripoffset[strip],
-					(unsigned __int64) bytecount);
-#else
-				TIFFErrorExt(tif->tif_clientdata, module,
-
-					"Read error on strip %lu; "
-					"got %llu bytes, expected %llu",
-					(unsigned long) strip,
-					(unsigned long long) tif->tif_size - td->td_stripoffset[strip],
-					(unsigned long long) bytecount);
-#endif
-				tif->tif_curstrip = NOSTRIP;
-				return (0);
-			}
-			tif->tif_rawdatasize = (tmsize_t)bytecount;
-			tif->tif_rawdata = tif->tif_base + (tmsize_t)td->td_stripoffset[strip];
-                        tif->tif_rawdataoff = 0;
-                        tif->tif_rawdataloaded = (tmsize_t) bytecount;
-
-			/* 
-			 * When we have tif_rawdata reference directly into the memory mapped file
-			 * we need to be pretty careful about how we use the rawdata.  It is not
-			 * a general purpose working buffer as it normally otherwise is.  So we
-			 * keep track of this fact to avoid using it improperly.
-			 */
-			tif->tif_flags |= TIFF_BUFFERMMAP;
-		} else {
-			/*
-			 * Expand raw data buffer, if needed, to hold data
-			 * strip coming from file (perhaps should set upper
-			 * bound on the size of a buffer we'll use?).
-			 */
-			tmsize_t bytecountm;
-			bytecountm=(tmsize_t)bytecount;
-			if ((uint64)bytecountm!=bytecount)
-			{
-				TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
-				return(0);
-			}
-			if (bytecountm > tif->tif_rawdatasize) {
-				tif->tif_curstrip = NOSTRIP;
-				if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
-					TIFFErrorExt(tif->tif_clientdata, module,
-					    "Data buffer too small to hold strip %lu",
-					    (unsigned long) strip);
-					return (0);
-				}
-				if (!TIFFReadBufferSetup(tif, 0, bytecountm))
-					return (0);
-			}
-			if (tif->tif_flags&TIFF_BUFFERMMAP) {
-				tif->tif_curstrip = NOSTRIP;
-				if (!TIFFReadBufferSetup(tif, 0, bytecountm))
-					return (0);
-			}
-			if (TIFFReadRawStrip1(tif, strip, tif->tif_rawdata,
-				bytecountm, module) != bytecountm)
-				return (0);
-
-                        tif->tif_rawdataoff = 0;
-                        tif->tif_rawdataloaded = bytecountm;
-                        
-			if (!isFillOrder(tif, td->td_fillorder) &&
-			    (tif->tif_flags & TIFF_NOBITREV) == 0)
-				TIFFReverseBits(tif->tif_rawdata, bytecountm);
-                }
-	}
-	return (TIFFStartStrip(tif, strip));
-}
-
-/*
- * Tile-oriented Read Support
- * Contributed by Nancy Cam (Silicon Graphics).
- */
-
-/*
- * Read and decompress a tile of data.  The
- * tile is selected by the (x,y,z,s) coordinates.
- */
-tmsize_t
-TIFFReadTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
-{
-	if (!TIFFCheckRead(tif, 1) || !TIFFCheckTile(tif, x, y, z, s))
-		return ((tmsize_t)(-1));
-	return (TIFFReadEncodedTile(tif,
-	    TIFFComputeTile(tif, x, y, z, s), buf, (tmsize_t)(-1)));
-}
-
-/*
- * Read a tile of data and decompress the specified
- * amount into the user-supplied buffer.
- */
-tmsize_t
-TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size)
-{
-	static const char module[] = "TIFFReadEncodedTile";
-	TIFFDirectory *td = &tif->tif_dir;
-	tmsize_t tilesize = tif->tif_tilesize;
-
-	if (!TIFFCheckRead(tif, 1))
-		return ((tmsize_t)(-1));
-	if (tile >= td->td_nstrips) {
-		TIFFErrorExt(tif->tif_clientdata, module,
-		    "%lu: Tile out of range, max %lu",
-		    (unsigned long) tile, (unsigned long) td->td_nstrips);
-		return ((tmsize_t)(-1));
-	}
-	if (size == (tmsize_t)(-1))
-		size = tilesize;
-	else if (size > tilesize)
-		size = tilesize;
-	if (TIFFFillTile(tif, tile) && (*tif->tif_decodetile)(tif,
-	    (uint8*) buf, size, (uint16)(tile/td->td_stripsperimage))) {
-		(*tif->tif_postdecode)(tif, (uint8*) buf, size);
-		return (size);
-	} else
-		return ((tmsize_t)(-1));
-}
-
-static tmsize_t
-TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module)
-{
-	TIFFDirectory *td = &tif->tif_dir;
-
-    if (!_TIFFFillStriles( tif ))
-        return ((tmsize_t)(-1));
-
-	assert((tif->tif_flags&TIFF_NOREADRAW)==0);
-	if (!isMapped(tif)) {
-		tmsize_t cc;
-
-		if (!SeekOK(tif, td->td_stripoffset[tile])) {
-			TIFFErrorExt(tif->tif_clientdata, module,
-			    "Seek error at row %lu, col %lu, tile %lu",
-			    (unsigned long) tif->tif_row,
-			    (unsigned long) tif->tif_col,
-			    (unsigned long) tile);
-			return ((tmsize_t)(-1));
-		}
-		cc = TIFFReadFile(tif, buf, size);
-		if (cc != size) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-			TIFFErrorExt(tif->tif_clientdata, module,
-	"Read error at row %lu, col %lu; got %I64u bytes, expected %I64u",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long) tif->tif_col,
-				     (unsigned __int64) cc,
-				     (unsigned __int64) size);
-#else
-			TIFFErrorExt(tif->tif_clientdata, module,
-	"Read error at row %lu, col %lu; got %llu bytes, expected %llu",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long) tif->tif_col,
-				     (unsigned long long) cc,
-				     (unsigned long long) size);
-#endif
-			return ((tmsize_t)(-1));
-		}
-	} else {
-		tmsize_t ma,mb;
-		tmsize_t n;
-		ma=(tmsize_t)td->td_stripoffset[tile];
-		mb=ma+size;
-		if (((uint64)ma!=td->td_stripoffset[tile])||(ma>tif->tif_size))
-			n=0;
-		else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
-			n=tif->tif_size-ma;
-		else
-			n=size;
-		if (n!=size) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-			TIFFErrorExt(tif->tif_clientdata, module,
-"Read error at row %lu, col %lu, tile %lu; got %I64u bytes, expected %I64u",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long) tif->tif_col,
-				     (unsigned long) tile,
-				     (unsigned __int64) n,
-				     (unsigned __int64) size);
-#else
-			TIFFErrorExt(tif->tif_clientdata, module,
-"Read error at row %lu, col %lu, tile %lu; got %llu bytes, expected %llu",
-				     (unsigned long) tif->tif_row,
-				     (unsigned long) tif->tif_col,
-				     (unsigned long) tile,
-				     (unsigned long long) n,
-				     (unsigned long long) size);
-#endif
-			return ((tmsize_t)(-1));
-		}
-		_TIFFmemcpy(buf, tif->tif_base + ma, size);
-	}
-	return (size);
-}
-
-/*
- * Read a tile of data from the file.
- */
-tmsize_t
-TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size)
-{
-	static const char module[] = "TIFFReadRawTile";
-	TIFFDirectory *td = &tif->tif_dir;
-	uint64 bytecount64;
-	tmsize_t bytecountm;
-
-	if (!TIFFCheckRead(tif, 1))
-		return ((tmsize_t)(-1));
-	if (tile >= td->td_nstrips) {
-		TIFFErrorExt(tif->tif_clientdata, module,
-		    "%lu: Tile out of range, max %lu",
-		    (unsigned long) tile, (unsigned long) td->td_nstrips);
-		return ((tmsize_t)(-1));
-	}
-	if (tif->tif_flags&TIFF_NOREADRAW)
-	{
-		TIFFErrorExt(tif->tif_clientdata, module,
-		"Compression scheme does not support access to raw uncompressed data");
-		return ((tmsize_t)(-1));
-	}
-	bytecount64 = td->td_stripbytecount[tile];
-	if (size != (tmsize_t)(-1) && (uint64)size < bytecount64)
-		bytecount64 = (uint64)size;
-	bytecountm = (tmsize_t)bytecount64;
-	if ((uint64)bytecountm!=bytecount64)
-	{
-		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
-		return ((tmsize_t)(-1));
-	}
-	return (TIFFReadRawTile1(tif, tile, buf, bytecountm, module));
-}
-
-/*
- * Read the specified tile and setup for decoding. The data buffer is
- * expanded, as necessary, to hold the tile's data.
- */
-int
-TIFFFillTile(TIFF* tif, uint32 tile)
-{
-	static const char module[] = "TIFFFillTile";
-	TIFFDirectory *td = &tif->tif_dir;
-
-    if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
-        return 0;
-        
-	if ((tif->tif_flags&TIFF_NOREADRAW)==0)
-	{
-		uint64 bytecount = td->td_stripbytecount[tile];
-		if (bytecount <= 0) {
-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
-			TIFFErrorExt(tif->tif_clientdata, module,
-				"%I64u: Invalid tile byte count, tile %lu",
-				     (unsigned __int64) bytecount,
-				     (unsigned long) tile);
-#else
-			TIFFErrorExt(tif->tif_clientdata, module,
-				"%llu: Invalid tile byte count, tile %lu",
-				     (unsigned long long) bytecount,
-				     (unsigned long) tile);
-#endif
-			return (0);
-		}
-		if (isMapped(tif) &&
-		    (isFillOrder(tif, td->td_fillorder)
-		     || (tif->tif_flags & TIFF_NOBITREV))) {
-			/*
-			 * The image is mapped into memory and we either don't
-			 * need to flip bits or the compression routine is
-			 * going to handle this operation itself.  In this
-			 * case, avoid copying the raw data and instead just
-			 * reference the data from the memory mapped file
-			 * image.  This assumes that the decompression
-			 * routines do not modify the contents of the raw data
-			 * buffer (if they try to, the application will get a
-			 * fault since the file is mapped read-only).
-			 */
-			if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
-				_TIFFfree(tif->tif_rawdata);
-				tif->tif_rawdata = NULL;
-				tif->tif_rawdatasize = 0;
-			}
-			tif->tif_flags &= ~TIFF_MYBUFFER;
-			/*
-			 * We must check for overflow, potentially causing
-			 * an OOB read. Instead of simple
-			 *
-			 *  td->td_stripoffset[tile]+bytecount > tif->tif_size
-			 *
-			 * comparison (which can overflow) we do the following
-			 * two comparisons:
-			 */
-			if (bytecount > (uint64)tif->tif_size ||
-			    td->td_stripoffset[tile] > (uint64)tif->tif_size - bytecount) {
-				tif->tif_curtile = NOTILE;
-				return (0);
-			}
-			tif->tif_rawdatasize = (tmsize_t)bytecount;
-			tif->tif_rawdata =
-				tif->tif_base + (tmsize_t)td->td_stripoffset[tile];
-                        tif->tif_rawdataoff = 0;
-                        tif->tif_rawdataloaded = (tmsize_t) bytecount;
-			tif->tif_flags |= TIFF_BUFFERMMAP;
-		} else {
-			/*
-			 * Expand raw data buffer, if needed, to hold data
-			 * tile coming from file (perhaps should set upper
-			 * bound on the size of a buffer we'll use?).
-			 */
-			tmsize_t bytecountm;
-			bytecountm=(tmsize_t)bytecount;
-			if ((uint64)bytecountm!=bytecount)
-			{
-				TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
-				return(0);
-			}
-			if (bytecountm > tif->tif_rawdatasize) {
-				tif->tif_curtile = NOTILE;
-				if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
-					TIFFErrorExt(tif->tif_clientdata, module,
-					    "Data buffer too small to hold tile %lu",
-					    (unsigned long) tile);
-					return (0);
-				}
-				if (!TIFFReadBufferSetup(tif, 0, bytecountm))
-					return (0);
-			}
-			if (tif->tif_flags&TIFF_BUFFERMMAP) {
-				tif->tif_curtile = NOTILE;
-				if (!TIFFReadBufferSetup(tif, 0, bytecountm))
-					return (0);
-			}
-
-			if (TIFFReadRawTile1(tif, tile, tif->tif_rawdata,
-			    bytecountm, module) != bytecountm)
-				return (0);
-
-                        tif->tif_rawdataoff = 0;
-                        tif->tif_rawdataloaded = bytecountm;
-                        
-			if (!isFillOrder(tif, td->td_fillorder) &&
-			    (tif->tif_flags & TIFF_NOBITREV) == 0)
-				TIFFReverseBits(tif->tif_rawdata,
-                                                tif->tif_rawdataloaded);
-		}
-	}
-	return (TIFFStartTile(tif, tile));
-}
-
-/*
- * Setup the raw data buffer in preparation for
- * reading a strip of raw data.  If the buffer
- * is specified as zero, then a buffer of appropriate
- * size is allocated by the library.  Otherwise,
- * the client must guarantee that the buffer is
- * large enough to hold any individual strip of
- * raw data.
- */
-int
-TIFFReadBufferSetup(TIFF* tif, void* bp, tmsize_t size)
-{
-	static const char module[] = "TIFFReadBufferSetup";
-
-	assert((tif->tif_flags&TIFF_NOREADRAW)==0);
-	tif->tif_flags &= ~TIFF_BUFFERMMAP;
-
-	if (tif->tif_rawdata) {
-		if (tif->tif_flags & TIFF_MYBUFFER)
-			_TIFFfree(tif->tif_rawdata);
-		tif->tif_rawdata = NULL;
-		tif->tif_rawdatasize = 0;
-	}
-	if (bp) {
-		tif->tif_rawdatasize = size;
-		tif->tif_rawdata = (uint8*) bp;
-		tif->tif_flags &= ~TIFF_MYBUFFER;
-	} else {
-		tif->tif_rawdatasize = (tmsize_t)TIFFroundup_64((uint64)size, 1024);
-		if (tif->tif_rawdatasize==0)
-			tif->tif_rawdatasize=(tmsize_t)(-1);
-		tif->tif_rawdata = (uint8*) _TIFFmalloc(tif->tif_rawdatasize);
-		tif->tif_flags |= TIFF_MYBUFFER;
-	}
-	if (tif->tif_rawdata == NULL) {
-		TIFFErrorExt(tif->tif_clientdata, module,
-		    "No space for data buffer at scanline %lu",
-		    (unsigned long) tif->tif_row);
-		tif->tif_rawdatasize = 0;
-		return (0);
-	}
-	return (1);
-}
-
-/*
- * Set state to appear as if a
- * strip has just been read in.
- */
-static int
-TIFFStartStrip(TIFF* tif, uint32 strip)
-{
-	TIFFDirectory *td = &tif->tif_dir;
-
-    if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
-        return 0;
-
-	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
-		if (!(*tif->tif_setupdecode)(tif))
-			return (0);
-		tif->tif_flags |= TIFF_CODERSETUP;
-	}
-	tif->tif_curstrip = strip;
-	tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
-        tif->tif_flags &= ~TIFF_BUF4WRITE;
-
-	if (tif->tif_flags&TIFF_NOREADRAW)
-	{
-		tif->tif_rawcp = NULL;
-		tif->tif_rawcc = 0;  
-	}
-	else
-	{
-		tif->tif_rawcp = tif->tif_rawdata;
-		tif->tif_rawcc = (tmsize_t)td->td_stripbytecount[strip];
-	}
-	return ((*tif->tif_predecode)(tif,
-			(uint16)(strip / td->td_stripsperimage)));
-}
-
-/*
- * Set state to appear as if a
- * tile has just been read in.
- */
-static int
-TIFFStartTile(TIFF* tif, uint32 tile)
-{
-	TIFFDirectory *td = &tif->tif_dir;
-
-    if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
-        return 0;
-
-	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
-		if (!(*tif->tif_setupdecode)(tif))
-			return (0);
-		tif->tif_flags |= TIFF_CODERSETUP;
-	}
-	tif->tif_curtile = tile;
-	tif->tif_row =
-	    (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth)) *
-		td->td_tilelength;
-	tif->tif_col =
-	    (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelength)) *
-		td->td_tilewidth;
-        tif->tif_flags &= ~TIFF_BUF4WRITE;
-	if (tif->tif_flags&TIFF_NOREADRAW)
-	{
-		tif->tif_rawcp = NULL;
-		tif->tif_rawcc = 0;
-	}
-	else
-	{
-		tif->tif_rawcp = tif->tif_rawdata;
-		tif->tif_rawcc = (tmsize_t)td->td_stripbytecount[tile];
-	}
-	return ((*tif->tif_predecode)(tif,
-			(uint16)(tile/td->td_stripsperimage)));
-}
-
-static int
-TIFFCheckRead(TIFF* tif, int tiles)
-{
-	if (tif->tif_mode == O_WRONLY) {
-		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "File not open for reading");
-		return (0);
-	}
-	if (tiles ^ isTiled(tif)) {
-		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, tiles ?
-		    "Can not read tiles from a stripped image" :
-		    "Can not read scanlines from a tiled image");
-		return (0);
-	}
-	return (1);
-}
-
-void
-_TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc)
-{
-    (void) tif; (void) buf; (void) cc;
-}
-
-void
-_TIFFSwab16BitData(TIFF* tif, uint8* buf, tmsize_t cc)
-{
-    (void) tif;
-    assert((cc & 1) == 0);
-    TIFFSwabArrayOfShort((uint16*) buf, cc/2);
-}
-
-void
-_TIFFSwab24BitData(TIFF* tif, uint8* buf, tmsize_t cc)
-{
-    (void) tif;
-    assert((cc % 3) == 0);
-    TIFFSwabArrayOfTriples((uint8*) buf, cc/3);
-}
-
-void
-_TIFFSwab32BitData(TIFF* tif, uint8* buf, tmsize_t cc)
-{
-    (void) tif;
-    assert((cc & 3) == 0);
-    TIFFSwabArrayOfLong((uint32*) buf, cc/4);
-}
-
-void
-_TIFFSwab64BitData(TIFF* tif, uint8* buf, tmsize_t cc)
-{
-    (void) tif;
-    assert((cc & 7) == 0);
-    TIFFSwabArrayOfDouble((double*) buf, cc/8);
-}
-
-/* vim: set ts=8 sts=8 sw=8 noet: */
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */
-