+++ /dev/null
-/* $Id: tif_write.c,v 1.1 2005/06/17 13:54:52 vp153 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 Write Support
- */
-#include "tiffiop.h"
-#include <stdio.h>
-
-#define STRIPINCR 20 /* expansion factor on strip array */
-
-#define WRITECHECKSTRIPS(tif, module) \
- (((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),0,module))
-#define WRITECHECKTILES(tif, module) \
- (((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),1,module))
-#define BUFFERCHECK(tif) \
- ((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) || \
- TIFFWriteBufferSetup((tif), NULL, (tsize_t) -1))
-
-static int TIFFGrowStrips(TIFF*, int, const char*);
-static int TIFFAppendToStrip(TIFF*, tstrip_t, tidata_t, tsize_t);
-
-int
-TIFFWriteScanline(TIFF* tif, tdata_t buf, uint32 row, tsample_t sample)
-{
- static const char module[] = "TIFFWriteScanline";
- register TIFFDirectory *td;
- int status, imagegrew = 0;
- tstrip_t strip;
-
- if (!WRITECHECKSTRIPS(tif, module))
- return (-1);
- /*
- * Handle delayed allocation of data buffer. This
- * permits it to be sized more intelligently (using
- * directory information).
- */
- if (!BUFFERCHECK(tif))
- return (-1);
- td = &tif->tif_dir;
- /*
- * Extend image length if needed
- * (but only for PlanarConfig=1).
- */
- if (row >= td->td_imagelength) { /* extend image */
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
- TIFFError(tif->tif_name,
- "Can not change \"ImageLength\" when using separate planes");
- return (-1);
- }
- td->td_imagelength = row+1;
- imagegrew = 1;
- }
- /*
- * Calculate strip and check for crossings.
- */
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
- if (sample >= td->td_samplesperpixel) {
- TIFFError(tif->tif_name,
- "%d: Sample out of range, max %d",
- sample, td->td_samplesperpixel);
- return (-1);
- }
- strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
- } else
- strip = row / td->td_rowsperstrip;
- if (strip != tif->tif_curstrip) {
- /*
- * Changing strips -- flush any data present.
- */
- if (!TIFFFlushData(tif))
- return (-1);
- tif->tif_curstrip = strip;
- /*
- * Watch out for a growing image. The value of
- * strips/image will initially be 1 (since it
- * can't be deduced until the imagelength is known).
- */
- if (strip >= td->td_stripsperimage && imagegrew)
- td->td_stripsperimage =
- TIFFhowmany(td->td_imagelength,td->td_rowsperstrip);
- tif->tif_row =
- (strip % td->td_stripsperimage) * td->td_rowsperstrip;
- if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
- if (!(*tif->tif_setupencode)(tif))
- return (-1);
- tif->tif_flags |= TIFF_CODERSETUP;
- }
-
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
-
- if( td->td_stripbytecount[strip] > 0 )
- {
- /* if we are writing over existing tiles, zero length */
- td->td_stripbytecount[strip] = 0;
-
- /* this forces TIFFAppendToStrip() to do a seek */
- tif->tif_curoff = 0;
- }
-
- if (!(*tif->tif_preencode)(tif, sample))
- return (-1);
- tif->tif_flags |= TIFF_POSTENCODE;
- }
- /*
- * Check strip array to make sure there's space.
- * We don't support dynamically growing files that
- * have data organized in separate bitplanes because
- * it's too painful. In that case we require that
- * the imagelength be set properly before the first
- * write (so that the strips array will be fully
- * allocated above).
- */
- if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
- return (-1);
- /*
- * Ensure the write is either sequential or at the
- * beginning of a strip (or that we can randomly
- * access the data -- i.e. no encoding).
- */
- if (row != tif->tif_row) {
- if (row < tif->tif_row) {
- /*
- * Moving backwards within the same strip:
- * backup to the start and then decode
- * forward (below).
- */
- tif->tif_row = (strip % td->td_stripsperimage) *
- td->td_rowsperstrip;
- tif->tif_rawcp = tif->tif_rawdata;
- }
- /*
- * Seek forward to the desired row.
- */
- if (!(*tif->tif_seek)(tif, row - tif->tif_row))
- return (-1);
- tif->tif_row = row;
- }
-
- /* swab if needed - note that source buffer will be altered */
- tif->tif_postdecode( tif, (tidata_t) buf, tif->tif_scanlinesize );
-
- status = (*tif->tif_encoderow)(tif, (tidata_t) buf,
- tif->tif_scanlinesize, sample);
-
- /* we are now poised at the beginning of the next row */
- tif->tif_row = row + 1;
- return (status);
-}
-
-/*
- * Encode the supplied data and write it to the
- * specified strip.
- *
- * NB: Image length must be setup before writing.
- */
-tsize_t
-TIFFWriteEncodedStrip(TIFF* tif, tstrip_t strip, tdata_t data, tsize_t cc)
-{
- static const char module[] = "TIFFWriteEncodedStrip";
- TIFFDirectory *td = &tif->tif_dir;
- tsample_t sample;
-
- if (!WRITECHECKSTRIPS(tif, module))
- return ((tsize_t) -1);
- /*
- * Check strip array to make sure there's space.
- * We don't support dynamically growing files that
- * have data organized in separate bitplanes because
- * it's too painful. In that case we require that
- * the imagelength be set properly before the first
- * write (so that the strips array will be fully
- * allocated above).
- */
- if (strip >= td->td_nstrips) {
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
- TIFFError(tif->tif_name,
- "Can not grow image by strips when using separate planes");
- return ((tsize_t) -1);
- }
- if (!TIFFGrowStrips(tif, 1, module))
- return ((tsize_t) -1);
- td->td_stripsperimage =
- TIFFhowmany(td->td_imagelength, td->td_rowsperstrip);
- }
- /*
- * Handle delayed allocation of data buffer. This
- * permits it to be sized according to the directory
- * info.
- */
- if (!BUFFERCHECK(tif))
- return ((tsize_t) -1);
- tif->tif_curstrip = strip;
- tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
- if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
- if (!(*tif->tif_setupencode)(tif))
- return ((tsize_t) -1);
- tif->tif_flags |= TIFF_CODERSETUP;
- }
-
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
-
- if( td->td_stripbytecount[strip] > 0 )
- {
- /* if we are writing over existing tiles, zero length. */
- td->td_stripbytecount[strip] = 0;
-
- /* this forces TIFFAppendToStrip() to do a seek */
- tif->tif_curoff = 0;
- }
-
- tif->tif_flags &= ~TIFF_POSTENCODE;
- sample = (tsample_t)(strip / td->td_stripsperimage);
- if (!(*tif->tif_preencode)(tif, sample))
- return ((tsize_t) -1);
-
- /* swab if needed - note that source buffer will be altered */
- tif->tif_postdecode( tif, (tidata_t) data, cc );
-
- if (!(*tif->tif_encodestrip)(tif, (tidata_t) data, cc, sample))
- return ((tsize_t) 0);
- if (!(*tif->tif_postencode)(tif))
- return ((tsize_t) -1);
- if (!isFillOrder(tif, td->td_fillorder) &&
- (tif->tif_flags & TIFF_NOBITREV) == 0)
- TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
- if (tif->tif_rawcc > 0 &&
- !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
- return ((tsize_t) -1);
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
- return (cc);
-}
-
-/*
- * Write the supplied data to the specified strip.
- *
- * NB: Image length must be setup before writing.
- */
-tsize_t
-TIFFWriteRawStrip(TIFF* tif, tstrip_t strip, tdata_t data, tsize_t cc)
-{
- static const char module[] = "TIFFWriteRawStrip";
- TIFFDirectory *td = &tif->tif_dir;
-
- if (!WRITECHECKSTRIPS(tif, module))
- return ((tsize_t) -1);
- /*
- * Check strip array to make sure there's space.
- * We don't support dynamically growing files that
- * have data organized in separate bitplanes because
- * it's too painful. In that case we require that
- * the imagelength be set properly before the first
- * write (so that the strips array will be fully
- * allocated above).
- */
- if (strip >= td->td_nstrips) {
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
- TIFFError(tif->tif_name,
- "Can not grow image by strips when using separate planes");
- return ((tsize_t) -1);
- }
- /*
- * Watch out for a growing image. The value of
- * strips/image will initially be 1 (since it
- * can't be deduced until the imagelength is known).
- */
- if (strip >= td->td_stripsperimage)
- td->td_stripsperimage =
- TIFFhowmany(td->td_imagelength,td->td_rowsperstrip);
- if (!TIFFGrowStrips(tif, 1, module))
- return ((tsize_t) -1);
- }
- tif->tif_curstrip = strip;
- tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
- return (TIFFAppendToStrip(tif, strip, (tidata_t) data, cc) ?
- cc : (tsize_t) -1);
-}
-
-/*
- * Write and compress a tile of data. The
- * tile is selected by the (x,y,z,s) coordinates.
- */
-tsize_t
-TIFFWriteTile(TIFF* tif,
- tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t s)
-{
- if (!TIFFCheckTile(tif, x, y, z, s))
- return (-1);
- /*
- * NB: A tile size of -1 is used instead of tif_tilesize knowing
- * that TIFFWriteEncodedTile will clamp this to the tile size.
- * This is done because the tile size may not be defined until
- * after the output buffer is setup in TIFFWriteBufferSetup.
- */
- return (TIFFWriteEncodedTile(tif,
- TIFFComputeTile(tif, x, y, z, s), buf, (tsize_t) -1));
-}
-
-/*
- * Encode the supplied data and write it to the
- * specified tile. There must be space for the
- * data. The function clamps individual writes
- * to a tile to the tile size, but does not (and
- * can not) check that multiple writes to the same
- * tile do not write more than tile size data.
- *
- * NB: Image length must be setup before writing; this
- * interface does not support automatically growing
- * the image on each write (as TIFFWriteScanline does).
- */
-tsize_t
-TIFFWriteEncodedTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
-{
- static const char module[] = "TIFFWriteEncodedTile";
- TIFFDirectory *td;
- tsample_t sample;
-
- if (!WRITECHECKTILES(tif, module))
- return ((tsize_t) -1);
- td = &tif->tif_dir;
- if (tile >= td->td_nstrips) {
- TIFFError(module, "%s: Tile %lu out of range, max %lu",
- tif->tif_name, (unsigned long) tile, (unsigned long) td->td_nstrips);
- return ((tsize_t) -1);
- }
- /*
- * Handle delayed allocation of data buffer. This
- * permits it to be sized more intelligently (using
- * directory information).
- */
- if (!BUFFERCHECK(tif))
- return ((tsize_t) -1);
- tif->tif_curtile = tile;
-
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
-
- if( td->td_stripbytecount[tile] > 0 )
- {
- /* if we are writing over existing tiles, zero length. */
- td->td_stripbytecount[tile] = 0;
-
- /* this forces TIFFAppendToStrip() to do a seek */
- tif->tif_curoff = 0;
- }
-
- /*
- * Compute tiles per row & per column to compute
- * current row and column
- */
- tif->tif_row = (tile % TIFFhowmany(td->td_imagelength, td->td_tilelength))
- * td->td_tilelength;
- tif->tif_col = (tile % TIFFhowmany(td->td_imagewidth, td->td_tilewidth))
- * td->td_tilewidth;
-
- if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
- if (!(*tif->tif_setupencode)(tif))
- return ((tsize_t) -1);
- tif->tif_flags |= TIFF_CODERSETUP;
- }
- tif->tif_flags &= ~TIFF_POSTENCODE;
- sample = (tsample_t)(tile/td->td_stripsperimage);
- if (!(*tif->tif_preencode)(tif, sample))
- return ((tsize_t) -1);
- /*
- * Clamp write amount to the tile size. This is mostly
- * done so that callers can pass in some large number
- * (e.g. -1) and have the tile size used instead.
- */
- if ( cc < 1 || cc > tif->tif_tilesize)
- cc = tif->tif_tilesize;
-
- /* swab if needed - note that source buffer will be altered */
- tif->tif_postdecode( tif, (tidata_t) data, cc );
-
- if (!(*tif->tif_encodetile)(tif, (tidata_t) data, cc, sample))
- return ((tsize_t) 0);
- if (!(*tif->tif_postencode)(tif))
- return ((tsize_t) -1);
- if (!isFillOrder(tif, td->td_fillorder) &&
- (tif->tif_flags & TIFF_NOBITREV) == 0)
- TIFFReverseBits((unsigned char *)tif->tif_rawdata, tif->tif_rawcc);
- if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
- tif->tif_rawdata, tif->tif_rawcc))
- return ((tsize_t) -1);
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
- return (cc);
-}
-
-/*
- * Write the supplied data to the specified strip.
- * There must be space for the data; we don't check
- * if strips overlap!
- *
- * NB: Image length must be setup before writing; this
- * interface does not support automatically growing
- * the image on each write (as TIFFWriteScanline does).
- */
-tsize_t
-TIFFWriteRawTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
-{
- static const char module[] = "TIFFWriteRawTile";
-
- if (!WRITECHECKTILES(tif, module))
- return ((tsize_t) -1);
- if (tile >= tif->tif_dir.td_nstrips) {
- TIFFError(module, "%s: Tile %lu out of range, max %lu",
- tif->tif_name, (unsigned long) tile,
- (unsigned long) tif->tif_dir.td_nstrips);
- return ((tsize_t) -1);
- }
- return (TIFFAppendToStrip(tif, tile, (tidata_t) data, cc) ?
- cc : (tsize_t) -1);
-}
-
-#define isUnspecified(tif, f) \
- (TIFFFieldSet(tif,f) && (tif)->tif_dir.td_imagelength == 0)
-
-int
-TIFFSetupStrips(TIFF* tif)
-{
- TIFFDirectory* td = &tif->tif_dir;
-
- if (isTiled(tif))
- td->td_stripsperimage =
- isUnspecified(tif, FIELD_TILEDIMENSIONS) ?
- td->td_samplesperpixel : TIFFNumberOfTiles(tif);
- else
- td->td_stripsperimage =
- isUnspecified(tif, FIELD_ROWSPERSTRIP) ?
- td->td_samplesperpixel : TIFFNumberOfStrips(tif);
- td->td_nstrips = td->td_stripsperimage;
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
- td->td_stripsperimage /= td->td_samplesperpixel;
- td->td_stripoffset = (uint32 *)
- _TIFFmalloc(td->td_nstrips * sizeof (uint32));
- td->td_stripbytecount = (uint32 *)
- _TIFFmalloc(td->td_nstrips * sizeof (uint32));
- if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL)
- return (0);
- /*
- * Place data at the end-of-file
- * (by setting offsets to zero).
- */
- _TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint32));
- _TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint32));
- TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
- TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
- return (1);
-}
-#undef isUnspecified
-
-/*
- * Verify file is writable and that the directory
- * information is setup properly. In doing the latter
- * we also "freeze" the state of the directory so
- * that important information is not changed.
- */
-int
-TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
-{
- if (tif->tif_mode == O_RDONLY) {
- TIFFError(module, "%s: File not open for writing",
- tif->tif_name);
- return (0);
- }
- if (tiles ^ isTiled(tif)) {
- TIFFError(tif->tif_name, tiles ?
- "Can not write tiles to a stripped image" :
- "Can not write scanlines to a tiled image");
- return (0);
- }
-
- /*
- * On the first write verify all the required information
- * has been setup and initialize any data structures that
- * had to wait until directory information was set.
- * Note that a lot of our work is assumed to remain valid
- * because we disallow any of the important parameters
- * from changing after we start writing (i.e. once
- * TIFF_BEENWRITING is set, TIFFSetField will only allow
- * the image's length to be changed).
- */
- if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
- TIFFError(module,
- "%s: Must set \"ImageWidth\" before writing data",
- tif->tif_name);
- return (0);
- }
- if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
- TIFFError(module,
- "%s: Must set \"PlanarConfiguration\" before writing data",
- tif->tif_name);
- return (0);
- }
- if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) {
- tif->tif_dir.td_nstrips = 0;
- TIFFError(module, "%s: No space for %s arrays",
- tif->tif_name, isTiled(tif) ? "tile" : "strip");
- return (0);
- }
- tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
- tif->tif_scanlinesize = TIFFScanlineSize(tif);
- tif->tif_flags |= TIFF_BEENWRITING;
- return (1);
-}
-
-/*
- * Setup the raw data buffer used for encoding.
- */
-int
-TIFFWriteBufferSetup(TIFF* tif, tdata_t bp, tsize_t size)
-{
- static const char module[] = "TIFFWriteBufferSetup";
-
- if (tif->tif_rawdata) {
- if (tif->tif_flags & TIFF_MYBUFFER) {
- _TIFFfree(tif->tif_rawdata);
- tif->tif_flags &= ~TIFF_MYBUFFER;
- }
- tif->tif_rawdata = NULL;
- }
- if (size == (tsize_t) -1) {
- size = (isTiled(tif) ?
- tif->tif_tilesize : TIFFStripSize(tif));
- /*
- * Make raw data buffer at least 8K
- */
- if (size < 8*1024)
- size = 8*1024;
- bp = NULL; /* NB: force malloc */
- }
- if (bp == NULL) {
- bp = _TIFFmalloc(size);
- if (bp == NULL) {
- TIFFError(module, "%s: No space for output buffer",
- tif->tif_name);
- return (0);
- }
- tif->tif_flags |= TIFF_MYBUFFER;
- } else
- tif->tif_flags &= ~TIFF_MYBUFFER;
- tif->tif_rawdata = (tidata_t) bp;
- tif->tif_rawdatasize = size;
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
- tif->tif_flags |= TIFF_BUFFERSETUP;
- return (1);
-}
-
-/*
- * Grow the strip data structures by delta strips.
- */
-static int
-TIFFGrowStrips(TIFF* tif, int delta, const char* module)
-{
- TIFFDirectory *td = &tif->tif_dir;
- uint32 *new_stripoffset, *new_stripbytecount;
-
- assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
- new_stripoffset = (uint32*)_TIFFrealloc(td->td_stripoffset,
- (td->td_nstrips + delta) * sizeof (uint32));
- new_stripbytecount = (uint32*)_TIFFrealloc(td->td_stripbytecount,
- (td->td_nstrips + delta) * sizeof (uint32));
- if (new_stripoffset == NULL || new_stripbytecount == NULL) {
- if (new_stripoffset)
- _TIFFfree(new_stripoffset);
- if (new_stripbytecount)
- _TIFFfree(new_stripbytecount);
- td->td_nstrips = 0;
- TIFFError(module, "%s: No space to expand strip arrays",
- tif->tif_name);
- return (0);
- }
- td->td_stripoffset = new_stripoffset;
- td->td_stripbytecount = new_stripbytecount;
- _TIFFmemset(td->td_stripoffset + td->td_nstrips,
- 0, delta*sizeof (uint32));
- _TIFFmemset(td->td_stripbytecount + td->td_nstrips,
- 0, delta*sizeof (uint32));
- td->td_nstrips += delta;
- return (1);
-}
-
-/*
- * Append the data to the specified strip.
- */
-static int
-TIFFAppendToStrip(TIFF* tif, tstrip_t strip, tidata_t data, tsize_t cc)
-{
- TIFFDirectory *td = &tif->tif_dir;
- static const char module[] = "TIFFAppendToStrip";
-
- if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
- /*
- * No current offset, set the current strip.
- */
- assert(td->td_nstrips > 0);
- if (td->td_stripoffset[strip] != 0) {
- /*
- * Prevent overlapping of the data chunks. We need
- * this to enable in place updating of the compressed
- * images. Larger blocks will be moved at the end of
- * the file without any optimization of the spare
- * space, so such scheme is not too much effective.
- */
- if (td->td_stripbytecountsorted) {
- if (strip == td->td_nstrips - 1
- || td->td_stripoffset[strip + 1] <
- td->td_stripoffset[strip] + cc) {
- td->td_stripoffset[strip] =
- TIFFSeekFile(tif, (toff_t)0,
- SEEK_END);
- }
- } else {
- tstrip_t i;
- for (i = 0; i < td->td_nstrips; i++) {
- if (td->td_stripoffset[i] >
- td->td_stripoffset[strip]
- && td->td_stripoffset[i] <
- td->td_stripoffset[strip] + cc) {
- td->td_stripoffset[strip] =
- TIFFSeekFile(tif,
- (toff_t)0,
- SEEK_END);
- }
- }
- }
-
- if (!SeekOK(tif, td->td_stripoffset[strip])) {
- TIFFError(module,
- "%s: Seek error at scanline %lu",
- tif->tif_name,
- (unsigned long)tif->tif_row);
- return (0);
- }
- } else
- td->td_stripoffset[strip] =
- TIFFSeekFile(tif, (toff_t) 0, SEEK_END);
- tif->tif_curoff = td->td_stripoffset[strip];
- }
-
- if (!WriteOK(tif, data, cc)) {
- TIFFError(module, "%s: Write error at scanline %lu",
- tif->tif_name, (unsigned long) tif->tif_row);
- return (0);
- }
- tif->tif_curoff += cc;
- td->td_stripbytecount[strip] += cc;
- return (1);
-}
-
-/*
- * Internal version of TIFFFlushData that can be
- * called by ``encodestrip routines'' w/o concern
- * for infinite recursion.
- */
-int
-TIFFFlushData1(TIFF* tif)
-{
- if (tif->tif_rawcc > 0) {
- if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
- (tif->tif_flags & TIFF_NOBITREV) == 0)
- TIFFReverseBits((unsigned char *)tif->tif_rawdata,
- tif->tif_rawcc);
- if (!TIFFAppendToStrip(tif,
- isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
- tif->tif_rawdata, tif->tif_rawcc))
- return (0);
- tif->tif_rawcc = 0;
- tif->tif_rawcp = tif->tif_rawdata;
- }
- return (1);
-}
-
-/*
- * Set the current write offset. This should only be
- * used to set the offset to a known previous location
- * (very carefully), or to 0 so that the next write gets
- * appended to the end of the file.
- */
-void
-TIFFSetWriteOffset(TIFF* tif, toff_t off)
-{
- tif->tif_curoff = off;
-}
-
-/* vim: set ts=8 sts=8 sw=8 noet: */
projects / opencv / blobdiff