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opencv/3rdparty/libtiff/tif_read.c

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/* $Id: tif_read.c,v 1.16.2.3 2010-06-09 14:32:47 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*, tstrip_t);
int TIFFFillTile(TIFF*, ttile_t);
static int TIFFStartStrip(TIFF*, tstrip_t);
static int TIFFStartTile(TIFF*, ttile_t);
static int TIFFCheckRead(TIFF*, int);
#define NOSTRIP ((tstrip_t) -1) /* undefined state */
#define NOTILE ((ttile_t) -1) /* undefined state */
/*
* Seek to a random row+sample in a file.
*/
static int
TIFFSeek(TIFF* tif, uint32 row, tsample_t sample)
{
register TIFFDirectory *td = &tif->tif_dir;
tstrip_t strip;
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 = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
} else
strip = row / td->td_rowsperstrip;
if (strip != tif->tif_curstrip) { /* different strip, refill */
if (!TIFFFillStrip(tif, strip))
return (0);
} else 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 (!TIFFStartStrip(tif, strip))
return (0);
}
if (row != tif->tif_row) {
/*
* Seek forward to the desired row.
*/
if (!(*tif->tif_seek)(tif, row - tif->tif_row))
return (0);
tif->tif_row = row;
}
return (1);
}
int
TIFFReadScanline(TIFF* tif, tdata_t buf, uint32 row, tsample_t 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, (tidata_t) 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, (tidata_t) buf,
tif->tif_scanlinesize);
}
return (e > 0 ? 1 : -1);
}
/*
* Read a strip of data and decompress the specified
* amount into the user-supplied buffer.
*/
tsize_t
TIFFReadEncodedStrip(TIFF* tif, tstrip_t strip, tdata_t buf, tsize_t size)
{
TIFFDirectory *td = &tif->tif_dir;
uint32 nrows;
tsize_t stripsize;
tstrip_t sep_strip, strips_per_sep;
if (!TIFFCheckRead(tif, 0))
return (-1);
if (strip >= td->td_nstrips) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"%ld: Strip out of range, max %ld",
(long) strip, (long) td->td_nstrips);
return (-1);
}
/*
* Calculate the strip size according to the number of
* rows in the strip (check for truncated last strip on any
* of the separations).
*/
if( td->td_rowsperstrip >= td->td_imagelength )
strips_per_sep = 1;
else
strips_per_sep = (td->td_imagelength+td->td_rowsperstrip-1)
/ td->td_rowsperstrip;
sep_strip = strip % strips_per_sep;
if (sep_strip != strips_per_sep-1 ||
(nrows = td->td_imagelength % td->td_rowsperstrip) == 0)
nrows = td->td_rowsperstrip;
stripsize = TIFFVStripSize(tif, nrows);
if (size == (tsize_t) -1)
size = stripsize;
else if (size > stripsize)
size = stripsize;
if (TIFFFillStrip(tif, strip)
&& (*tif->tif_decodestrip)(tif, (tidata_t) buf, size,
(tsample_t)(strip / td->td_stripsperimage)) > 0 ) {
(*tif->tif_postdecode)(tif, (tidata_t) buf, size);
return (size);
} else
return ((tsize_t) -1);
}
static tsize_t
TIFFReadRawStrip1(TIFF* tif,
tstrip_t strip, tdata_t buf, tsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (!isMapped(tif)) {
tsize_t cc;
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Seek error at scanline %lu, strip %lu",
tif->tif_name,
(unsigned long) tif->tif_row, (unsigned long) strip);
return (-1);
}
cc = TIFFReadFile(tif, buf, size);
if (cc != size) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error at scanline %lu; got %lu bytes, expected %lu",
tif->tif_name,
(unsigned long) tif->tif_row,
(unsigned long) cc,
(unsigned long) size);
return (-1);
}
} else {
if (td->td_stripoffset[strip] + size > tif->tif_size) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error at scanline %lu, strip %lu; got %lu bytes, expected %lu",
tif->tif_name,
(unsigned long) tif->tif_row,
(unsigned long) strip,
(unsigned long) tif->tif_size - td->td_stripoffset[strip],
(unsigned long) size);
return (-1);
}
_TIFFmemcpy(buf, tif->tif_base + td->td_stripoffset[strip],
size);
}
return (size);
}
/*
* Read a strip of data from the file.
*/
tsize_t
TIFFReadRawStrip(TIFF* tif, tstrip_t strip, tdata_t buf, tsize_t size)
{
static const char module[] = "TIFFReadRawStrip";
TIFFDirectory *td = &tif->tif_dir;
/*
* FIXME: butecount should have tsize_t type, but for now libtiff
* defines tsize_t as a signed 32-bit integer and we are losing
* ability to read arrays larger than 2^31 bytes. So we are using
* uint32 instead of tsize_t here.
*/
uint32 bytecount;
if (!TIFFCheckRead(tif, 0))
return ((tsize_t) -1);
if (strip >= td->td_nstrips) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"%lu: Strip out of range, max %lu",
(unsigned long) strip,
(unsigned long) td->td_nstrips);
return ((tsize_t) -1);
}
if (tif->tif_flags&TIFF_NOREADRAW)
{
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Compression scheme does not support access to raw uncompressed data");
return ((tsize_t) -1);
}
bytecount = td->td_stripbytecount[strip];
if (bytecount <= 0) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"%lu: Invalid strip byte count, strip %lu",
(unsigned long) bytecount, (unsigned long) strip);
return ((tsize_t) -1);
}
if (size != (tsize_t)-1 && (uint32)size < bytecount)
bytecount = size;
return (TIFFReadRawStrip1(tif, strip, buf, bytecount, 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, tstrip_t strip)
{
static const char module[] = "TIFFFillStrip";
TIFFDirectory *td = &tif->tif_dir;
if ((tif->tif_flags&TIFF_NOREADRAW)==0)
{
/*
* FIXME: butecount should have tsize_t type, but for now
* libtiff defines tsize_t as a signed 32-bit integer and we
* are losing ability to read arrays larger than 2^31 bytes.
* So we are using uint32 instead of tsize_t here.
*/
uint32 bytecount = td->td_stripbytecount[strip];
if (bytecount <= 0) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Invalid strip byte count %lu, strip %lu",
tif->tif_name, (unsigned long) bytecount,
(unsigned long) strip);
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_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 > tif->tif_size ||
td->td_stripoffset[strip] > tif->tif_size - bytecount) {
/*
* This error message might seem strange, but
* it's what would happen if a read were done
* instead.
*/
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error on strip %lu; "
"got %lu bytes, expected %lu",
tif->tif_name, (unsigned long) strip,
(unsigned long) tif->tif_size - td->td_stripoffset[strip],
(unsigned long) bytecount);
tif->tif_curstrip = NOSTRIP;
return (0);
}
tif->tif_rawdatasize = bytecount;
tif->tif_rawdata = tif->tif_base + td->td_stripoffset[strip];
} 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?).
*/
if (bytecount > (uint32)tif->tif_rawdatasize) {
tif->tif_curstrip = NOSTRIP;
if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
TIFFErrorExt(tif->tif_clientdata,
module,
"%s: Data buffer too small to hold strip %lu",
tif->tif_name,
(unsigned long) strip);
return (0);
}
if (!TIFFReadBufferSetup(tif, 0,
TIFFroundup(bytecount, 1024)))
return (0);
}
if ((uint32)TIFFReadRawStrip1(tif, strip,
(unsigned char *)tif->tif_rawdata,
bytecount, module) != bytecount)
return (0);
if (!isFillOrder(tif, td->td_fillorder) &&
(tif->tif_flags & TIFF_NOBITREV) == 0)
TIFFReverseBits(tif->tif_rawdata, bytecount);
}
}
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.
*/
tsize_t
TIFFReadTile(TIFF* tif,
tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t s)
{
if (!TIFFCheckRead(tif, 1) || !TIFFCheckTile(tif, x, y, z, s))
return (-1);
return (TIFFReadEncodedTile(tif,
TIFFComputeTile(tif, x, y, z, s), buf, (tsize_t) -1));
}
/*
* Read a tile of data and decompress the specified
* amount into the user-supplied buffer.
*/
tsize_t
TIFFReadEncodedTile(TIFF* tif, ttile_t tile, tdata_t buf, tsize_t size)
{
TIFFDirectory *td = &tif->tif_dir;
tsize_t tilesize = tif->tif_tilesize;
if (!TIFFCheckRead(tif, 1))
return (-1);
if (tile >= td->td_nstrips) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"%ld: Tile out of range, max %ld",
(long) tile, (unsigned long) td->td_nstrips);
return (-1);
}
if (size == (tsize_t) -1)
size = tilesize;
else if (size > tilesize)
size = tilesize;
if (TIFFFillTile(tif, tile) && (*tif->tif_decodetile)(tif,
(tidata_t) buf, size, (tsample_t)(tile/td->td_stripsperimage))) {
(*tif->tif_postdecode)(tif, (tidata_t) buf, size);
return (size);
} else
return (-1);
}
static tsize_t
TIFFReadRawTile1(TIFF* tif,
ttile_t tile, tdata_t buf, tsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (!isMapped(tif)) {
tsize_t cc;
if (!SeekOK(tif, td->td_stripoffset[tile])) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Seek error at row %ld, col %ld, tile %ld",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(long) tile);
return ((tsize_t) -1);
}
cc = TIFFReadFile(tif, buf, size);
if (cc != size) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error at row %ld, col %ld; got %lu bytes, expected %lu",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(unsigned long) cc,
(unsigned long) size);
return ((tsize_t) -1);
}
} else {
if (td->td_stripoffset[tile] + size > tif->tif_size) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error at row %ld, col %ld, tile %ld; got %lu bytes, expected %lu",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(long) tile,
(unsigned long) tif->tif_size - td->td_stripoffset[tile],
(unsigned long) size);
return ((tsize_t) -1);
}
_TIFFmemcpy(buf, tif->tif_base + td->td_stripoffset[tile], size);
}
return (size);
}
/*
* Read a tile of data from the file.
*/
tsize_t
TIFFReadRawTile(TIFF* tif, ttile_t tile, tdata_t buf, tsize_t size)
{
static const char module[] = "TIFFReadRawTile";
TIFFDirectory *td = &tif->tif_dir;
/*
* FIXME: butecount should have tsize_t type, but for now libtiff
* defines tsize_t as a signed 32-bit integer and we are losing
* ability to read arrays larger than 2^31 bytes. So we are using
* uint32 instead of tsize_t here.
*/
uint32 bytecount;
if (!TIFFCheckRead(tif, 1))
return ((tsize_t) -1);
if (tile >= td->td_nstrips) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"%lu: Tile out of range, max %lu",
(unsigned long) tile, (unsigned long) td->td_nstrips);
return ((tsize_t) -1);
}
if (tif->tif_flags&TIFF_NOREADRAW)
{
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Compression scheme does not support access to raw uncompressed data");
return ((tsize_t) -1);
}
bytecount = td->td_stripbytecount[tile];
if (size != (tsize_t) -1 && (uint32)size < bytecount)
bytecount = size;
return (TIFFReadRawTile1(tif, tile, buf, bytecount, 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, ttile_t tile)
{
static const char module[] = "TIFFFillTile";
TIFFDirectory *td = &tif->tif_dir;
if ((tif->tif_flags&TIFF_NOREADRAW)==0)
{
/*
* FIXME: butecount should have tsize_t type, but for now
* libtiff defines tsize_t as a signed 32-bit integer and we
* are losing ability to read arrays larger than 2^31 bytes.
* So we are using uint32 instead of tsize_t here.
*/
uint32 bytecount = td->td_stripbytecount[tile];
if (bytecount <= 0) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"%lu: Invalid tile byte count, tile %lu",
(unsigned long) bytecount, (unsigned long) tile);
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_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 > tif->tif_size ||
td->td_stripoffset[tile] > tif->tif_size - bytecount) {
tif->tif_curtile = NOTILE;
return (0);
}
tif->tif_rawdatasize = bytecount;
tif->tif_rawdata =
tif->tif_base + td->td_stripoffset[tile];
} 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?).
*/
if (bytecount > (uint32)tif->tif_rawdatasize) {
tif->tif_curtile = NOTILE;
if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
TIFFErrorExt(tif->tif_clientdata,
module,
"%s: Data buffer too small to hold tile %ld",
tif->tif_name,
(long) tile);
return (0);
}
if (!TIFFReadBufferSetup(tif, 0,
TIFFroundup(bytecount, 1024)))
return (0);
}
if ((uint32)TIFFReadRawTile1(tif, tile,
(unsigned char *)tif->tif_rawdata,
bytecount, module) != bytecount)
return (0);
if (!isFillOrder(tif, td->td_fillorder) &&
(tif->tif_flags & TIFF_NOBITREV) == 0)
TIFFReverseBits(tif->tif_rawdata, bytecount);
}
}
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, tdata_t bp, tsize_t size)
{
static const char module[] = "TIFFReadBufferSetup";
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (tif->tif_rawdata) {
if (tif->tif_flags & TIFF_MYBUFFER)
_TIFFfree(tif->tif_rawdata);
tif->tif_rawdata = NULL;
}
if (bp) {
tif->tif_rawdatasize = size;
tif->tif_rawdata = (tidata_t) bp;
tif->tif_flags &= ~TIFF_MYBUFFER;
} else {
tif->tif_rawdatasize = TIFFroundup(size, 1024);
if (tif->tif_rawdatasize > 0)
tif->tif_rawdata = (tidata_t) _TIFFmalloc(tif->tif_rawdatasize);
tif->tif_flags |= TIFF_MYBUFFER;
}
if ((tif->tif_rawdata == NULL) || (tif->tif_rawdatasize == 0)) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: No space for data buffer at scanline %ld",
tif->tif_name, (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, tstrip_t strip)
{
TIFFDirectory *td = &tif->tif_dir;
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;
if (tif->tif_flags&TIFF_NOREADRAW)
{
tif->tif_rawcp = NULL;
tif->tif_rawcc = 0;
}
else
{
tif->tif_rawcp = tif->tif_rawdata;
tif->tif_rawcc = td->td_stripbytecount[strip];
}
return ((*tif->tif_predecode)(tif,
(tsample_t)(strip / td->td_stripsperimage)));
}
/*
* Set state to appear as if a
* tile has just been read in.
*/
static int
TIFFStartTile(TIFF* tif, ttile_t tile)
{
TIFFDirectory *td = &tif->tif_dir;
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(td->td_imagewidth, td->td_tilewidth)) *
td->td_tilelength;
tif->tif_col =
(tile % TIFFhowmany(td->td_imagelength, td->td_tilelength)) *
td->td_tilewidth;
if (tif->tif_flags&TIFF_NOREADRAW)
{
tif->tif_rawcp = NULL;
tif->tif_rawcc = 0;
}
else
{
tif->tif_rawcp = tif->tif_rawdata;
tif->tif_rawcc = td->td_stripbytecount[tile];
}
return ((*tif->tif_predecode)(tif,
(tsample_t)(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, tidata_t buf, tsize_t cc)
{
(void) tif; (void) buf; (void) cc;
}
void
_TIFFSwab16BitData(TIFF* tif, tidata_t buf, tsize_t cc)
{
(void) tif;
assert((cc & 1) == 0);
TIFFSwabArrayOfShort((uint16*) buf, cc/2);
}
void
_TIFFSwab24BitData(TIFF* tif, tidata_t buf, tsize_t cc)
{
(void) tif;
assert((cc % 3) == 0);
TIFFSwabArrayOfTriples((uint8*) buf, cc/3);
}
void
_TIFFSwab32BitData(TIFF* tif, tidata_t buf, tsize_t cc)
{
(void) tif;
assert((cc & 3) == 0);
TIFFSwabArrayOfLong((uint32*) buf, cc/4);
}
void
_TIFFSwab64BitData(TIFF* tif, tidata_t buf, tsize_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:
*/