750 lines
25 KiB
C
750 lines
25 KiB
C
/* $Id: tif_write.c,v 1.36 2011-02-18 20:53:04 fwarmerdam Exp $ */
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/*
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* Copyright (c) 1988-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* TIFF Library.
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*
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* Scanline-oriented Write Support
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*/
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#include "tiffiop.h"
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#include <stdio.h>
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#define STRIPINCR 20 /* expansion factor on strip array */
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#define WRITECHECKSTRIPS(tif, module) \
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(((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),0,module))
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#define WRITECHECKTILES(tif, module) \
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(((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),1,module))
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#define BUFFERCHECK(tif) \
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((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) || \
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TIFFWriteBufferSetup((tif), NULL, (tmsize_t) -1))
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static int TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module);
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static int TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc);
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int
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TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
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{
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static const char module[] = "TIFFWriteScanline";
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register TIFFDirectory *td;
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int status, imagegrew = 0;
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uint32 strip;
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if (!WRITECHECKSTRIPS(tif, module))
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return (-1);
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/*
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* Handle delayed allocation of data buffer. This
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* permits it to be sized more intelligently (using
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* directory information).
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*/
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if (!BUFFERCHECK(tif))
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return (-1);
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tif->tif_flags |= TIFF_BUF4WRITE; /* not strictly sure this is right*/
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td = &tif->tif_dir;
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/*
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* Extend image length if needed
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* (but only for PlanarConfig=1).
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*/
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if (row >= td->td_imagelength) { /* extend image */
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if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Can not change \"ImageLength\" when using separate planes");
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return (-1);
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}
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td->td_imagelength = row+1;
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imagegrew = 1;
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}
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/*
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* Calculate strip and check for crossings.
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*/
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if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
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if (sample >= td->td_samplesperpixel) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"%lu: Sample out of range, max %lu",
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(unsigned long) sample, (unsigned long) td->td_samplesperpixel);
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return (-1);
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}
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strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
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} else
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strip = row / td->td_rowsperstrip;
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/*
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* Check strip array to make sure there's space. We don't support
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* dynamically growing files that have data organized in separate
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* bitplanes because it's too painful. In that case we require that
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* the imagelength be set properly before the first write (so that the
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* strips array will be fully allocated above).
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*/
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if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
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return (-1);
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if (strip != tif->tif_curstrip) {
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/*
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* Changing strips -- flush any data present.
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*/
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if (!TIFFFlushData(tif))
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return (-1);
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tif->tif_curstrip = strip;
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/*
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* Watch out for a growing image. The value of strips/image
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* will initially be 1 (since it can't be deduced until the
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* imagelength is known).
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*/
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if (strip >= td->td_stripsperimage && imagegrew)
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td->td_stripsperimage =
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TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip);
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tif->tif_row =
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(strip % td->td_stripsperimage) * td->td_rowsperstrip;
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if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
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if (!(*tif->tif_setupencode)(tif))
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return (-1);
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tif->tif_flags |= TIFF_CODERSETUP;
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}
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tif->tif_rawcc = 0;
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tif->tif_rawcp = tif->tif_rawdata;
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if( td->td_stripbytecount[strip] > 0 )
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{
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/* if we are writing over existing tiles, zero length */
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td->td_stripbytecount[strip] = 0;
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/* this forces TIFFAppendToStrip() to do a seek */
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tif->tif_curoff = 0;
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}
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if (!(*tif->tif_preencode)(tif, sample))
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return (-1);
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tif->tif_flags |= TIFF_POSTENCODE;
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}
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/*
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* Ensure the write is either sequential or at the
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* beginning of a strip (or that we can randomly
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* access the data -- i.e. no encoding).
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*/
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if (row != tif->tif_row) {
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if (row < tif->tif_row) {
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/*
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* Moving backwards within the same strip:
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* backup to the start and then decode
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* forward (below).
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*/
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tif->tif_row = (strip % td->td_stripsperimage) *
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td->td_rowsperstrip;
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tif->tif_rawcp = tif->tif_rawdata;
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}
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/*
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* Seek forward to the desired row.
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*/
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if (!(*tif->tif_seek)(tif, row - tif->tif_row))
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return (-1);
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tif->tif_row = row;
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}
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/* swab if needed - note that source buffer will be altered */
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tif->tif_postdecode( tif, (uint8*) buf, tif->tif_scanlinesize );
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status = (*tif->tif_encoderow)(tif, (uint8*) buf,
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tif->tif_scanlinesize, sample);
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/* we are now poised at the beginning of the next row */
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tif->tif_row = row + 1;
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return (status);
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}
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/*
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* Encode the supplied data and write it to the
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* specified strip.
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*
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* NB: Image length must be setup before writing.
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*/
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tmsize_t
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TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
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{
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static const char module[] = "TIFFWriteEncodedStrip";
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TIFFDirectory *td = &tif->tif_dir;
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uint16 sample;
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if (!WRITECHECKSTRIPS(tif, module))
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return ((tmsize_t) -1);
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/*
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* Check strip array to make sure there's space.
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* We don't support dynamically growing files that
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* have data organized in separate bitplanes because
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* it's too painful. In that case we require that
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* the imagelength be set properly before the first
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* write (so that the strips array will be fully
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* allocated above).
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*/
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if (strip >= td->td_nstrips) {
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if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Can not grow image by strips when using separate planes");
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return ((tmsize_t) -1);
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}
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if (!TIFFGrowStrips(tif, 1, module))
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return ((tmsize_t) -1);
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td->td_stripsperimage =
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TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);
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}
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/*
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* Handle delayed allocation of data buffer. This
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* permits it to be sized according to the directory
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* info.
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*/
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if (!BUFFERCHECK(tif))
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return ((tmsize_t) -1);
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tif->tif_flags |= TIFF_BUF4WRITE;
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tif->tif_curstrip = strip;
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tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
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if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
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if (!(*tif->tif_setupencode)(tif))
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return ((tmsize_t) -1);
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tif->tif_flags |= TIFF_CODERSETUP;
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}
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tif->tif_rawcc = 0;
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tif->tif_rawcp = tif->tif_rawdata;
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if( td->td_stripbytecount[strip] > 0 )
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{
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/* Force TIFFAppendToStrip() to consider placing data at end
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of file. */
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tif->tif_curoff = 0;
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}
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tif->tif_flags &= ~TIFF_POSTENCODE;
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sample = (uint16)(strip / td->td_stripsperimage);
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if (!(*tif->tif_preencode)(tif, sample))
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return ((tmsize_t) -1);
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/* swab if needed - note that source buffer will be altered */
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tif->tif_postdecode( tif, (uint8*) data, cc );
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if (!(*tif->tif_encodestrip)(tif, (uint8*) data, cc, sample))
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return (0);
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if (!(*tif->tif_postencode)(tif))
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return ((tmsize_t) -1);
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if (!isFillOrder(tif, td->td_fillorder) &&
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(tif->tif_flags & TIFF_NOBITREV) == 0)
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TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
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if (tif->tif_rawcc > 0 &&
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!TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
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return ((tmsize_t) -1);
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tif->tif_rawcc = 0;
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tif->tif_rawcp = tif->tif_rawdata;
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return (cc);
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}
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/*
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* Write the supplied data to the specified strip.
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*
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* NB: Image length must be setup before writing.
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*/
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tmsize_t
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TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
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{
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static const char module[] = "TIFFWriteRawStrip";
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TIFFDirectory *td = &tif->tif_dir;
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if (!WRITECHECKSTRIPS(tif, module))
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return ((tmsize_t) -1);
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/*
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* Check strip array to make sure there's space.
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* We don't support dynamically growing files that
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* have data organized in separate bitplanes because
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* it's too painful. In that case we require that
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* the imagelength be set properly before the first
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* write (so that the strips array will be fully
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* allocated above).
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*/
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if (strip >= td->td_nstrips) {
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if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Can not grow image by strips when using separate planes");
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return ((tmsize_t) -1);
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}
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/*
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* Watch out for a growing image. The value of
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* strips/image will initially be 1 (since it
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* can't be deduced until the imagelength is known).
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*/
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if (strip >= td->td_stripsperimage)
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td->td_stripsperimage =
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TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip);
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if (!TIFFGrowStrips(tif, 1, module))
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return ((tmsize_t) -1);
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}
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tif->tif_curstrip = strip;
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tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
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return (TIFFAppendToStrip(tif, strip, (uint8*) data, cc) ?
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cc : (tmsize_t) -1);
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}
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/*
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* Write and compress a tile of data. The
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* tile is selected by the (x,y,z,s) coordinates.
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*/
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tmsize_t
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TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
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{
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if (!TIFFCheckTile(tif, x, y, z, s))
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return ((tmsize_t)(-1));
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/*
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* NB: A tile size of -1 is used instead of tif_tilesize knowing
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* that TIFFWriteEncodedTile will clamp this to the tile size.
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* This is done because the tile size may not be defined until
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* after the output buffer is setup in TIFFWriteBufferSetup.
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*/
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return (TIFFWriteEncodedTile(tif,
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TIFFComputeTile(tif, x, y, z, s), buf, (tmsize_t)(-1)));
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}
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/*
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* Encode the supplied data and write it to the
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* specified tile. There must be space for the
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* data. The function clamps individual writes
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* to a tile to the tile size, but does not (and
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* can not) check that multiple writes to the same
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* tile do not write more than tile size data.
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*
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* NB: Image length must be setup before writing; this
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* interface does not support automatically growing
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* the image on each write (as TIFFWriteScanline does).
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*/
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tmsize_t
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TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
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{
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static const char module[] = "TIFFWriteEncodedTile";
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TIFFDirectory *td;
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uint16 sample;
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if (!WRITECHECKTILES(tif, module))
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return ((tmsize_t)(-1));
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td = &tif->tif_dir;
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if (tile >= td->td_nstrips) {
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TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
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(unsigned long) tile, (unsigned long) td->td_nstrips);
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return ((tmsize_t)(-1));
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}
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/*
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* Handle delayed allocation of data buffer. This
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* permits it to be sized more intelligently (using
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* directory information).
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*/
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if (!BUFFERCHECK(tif))
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return ((tmsize_t)(-1));
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tif->tif_flags |= TIFF_BUF4WRITE;
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tif->tif_curtile = tile;
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tif->tif_rawcc = 0;
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tif->tif_rawcp = tif->tif_rawdata;
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if( td->td_stripbytecount[tile] > 0 )
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{
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/* Force TIFFAppendToStrip() to consider placing data at end
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of file. */
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tif->tif_curoff = 0;
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}
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/*
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* Compute tiles per row & per column to compute
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* current row and column
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*/
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tif->tif_row = (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelength))
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* td->td_tilelength;
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tif->tif_col = (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth))
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* td->td_tilewidth;
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if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
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if (!(*tif->tif_setupencode)(tif))
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return ((tmsize_t)(-1));
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tif->tif_flags |= TIFF_CODERSETUP;
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}
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tif->tif_flags &= ~TIFF_POSTENCODE;
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sample = (uint16)(tile/td->td_stripsperimage);
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if (!(*tif->tif_preencode)(tif, sample))
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return ((tmsize_t)(-1));
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/*
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* Clamp write amount to the tile size. This is mostly
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* done so that callers can pass in some large number
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* (e.g. -1) and have the tile size used instead.
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*/
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if ( cc < 1 || cc > tif->tif_tilesize)
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cc = tif->tif_tilesize;
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/* swab if needed - note that source buffer will be altered */
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tif->tif_postdecode( tif, (uint8*) data, cc );
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if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample))
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return (0);
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if (!(*tif->tif_postencode)(tif))
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return ((tmsize_t)(-1));
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if (!isFillOrder(tif, td->td_fillorder) &&
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(tif->tif_flags & TIFF_NOBITREV) == 0)
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TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc);
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if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
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tif->tif_rawdata, tif->tif_rawcc))
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return ((tmsize_t)(-1));
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tif->tif_rawcc = 0;
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tif->tif_rawcp = tif->tif_rawdata;
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return (cc);
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}
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/*
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* Write the supplied data to the specified strip.
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* There must be space for the data; we don't check
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* if strips overlap!
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*
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* NB: Image length must be setup before writing; this
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* interface does not support automatically growing
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* the image on each write (as TIFFWriteScanline does).
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*/
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tmsize_t
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TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
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{
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static const char module[] = "TIFFWriteRawTile";
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if (!WRITECHECKTILES(tif, module))
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return ((tmsize_t)(-1));
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if (tile >= tif->tif_dir.td_nstrips) {
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TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
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(unsigned long) tile,
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(unsigned long) tif->tif_dir.td_nstrips);
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return ((tmsize_t)(-1));
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}
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return (TIFFAppendToStrip(tif, tile, (uint8*) data, cc) ?
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cc : (tmsize_t)(-1));
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}
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#define isUnspecified(tif, f) \
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(TIFFFieldSet(tif,f) && (tif)->tif_dir.td_imagelength == 0)
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int
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TIFFSetupStrips(TIFF* tif)
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{
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TIFFDirectory* td = &tif->tif_dir;
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if (isTiled(tif))
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td->td_stripsperimage =
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isUnspecified(tif, FIELD_TILEDIMENSIONS) ?
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td->td_samplesperpixel : TIFFNumberOfTiles(tif);
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else
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td->td_stripsperimage =
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isUnspecified(tif, FIELD_ROWSPERSTRIP) ?
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td->td_samplesperpixel : TIFFNumberOfStrips(tif);
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td->td_nstrips = td->td_stripsperimage;
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if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
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td->td_stripsperimage /= td->td_samplesperpixel;
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td->td_stripoffset = (uint64 *)
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_TIFFmalloc(td->td_nstrips * sizeof (uint64));
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td->td_stripbytecount = (uint64 *)
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_TIFFmalloc(td->td_nstrips * sizeof (uint64));
|
|
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 (uint64));
|
|
_TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint64));
|
|
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) {
|
|
TIFFErrorExt(tif->tif_clientdata, module, "File not open for writing");
|
|
return (0);
|
|
}
|
|
if (tiles ^ isTiled(tif)) {
|
|
TIFFErrorExt(tif->tif_clientdata, module, tiles ?
|
|
"Can not write tiles to a stripped image" :
|
|
"Can not write scanlines to a tiled image");
|
|
return (0);
|
|
}
|
|
|
|
_TIFFFillStriles( tif );
|
|
|
|
/*
|
|
* 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)) {
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"Must set \"ImageWidth\" before writing data");
|
|
return (0);
|
|
}
|
|
if (tif->tif_dir.td_samplesperpixel == 1) {
|
|
/*
|
|
* Planarconfiguration is irrelevant in case of single band
|
|
* images and need not be included. We will set it anyway,
|
|
* because this field is used in other parts of library even
|
|
* in the single band case.
|
|
*/
|
|
if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG))
|
|
tif->tif_dir.td_planarconfig = PLANARCONFIG_CONTIG;
|
|
} else {
|
|
if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"Must set \"PlanarConfiguration\" before writing data");
|
|
return (0);
|
|
}
|
|
}
|
|
if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) {
|
|
tif->tif_dir.td_nstrips = 0;
|
|
TIFFErrorExt(tif->tif_clientdata, module, "No space for %s arrays",
|
|
isTiled(tif) ? "tile" : "strip");
|
|
return (0);
|
|
}
|
|
if (isTiled(tif))
|
|
{
|
|
tif->tif_tilesize = TIFFTileSize(tif);
|
|
if (tif->tif_tilesize == 0)
|
|
return (0);
|
|
}
|
|
else
|
|
tif->tif_tilesize = (tmsize_t)(-1);
|
|
tif->tif_scanlinesize = TIFFScanlineSize(tif);
|
|
if (tif->tif_scanlinesize == 0)
|
|
return (0);
|
|
tif->tif_flags |= TIFF_BEENWRITING;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Setup the raw data buffer used for encoding.
|
|
*/
|
|
int
|
|
TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_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 == (tmsize_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) {
|
|
TIFFErrorExt(tif->tif_clientdata, module, "No space for output buffer");
|
|
return (0);
|
|
}
|
|
tif->tif_flags |= TIFF_MYBUFFER;
|
|
} else
|
|
tif->tif_flags &= ~TIFF_MYBUFFER;
|
|
tif->tif_rawdata = (uint8*) 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, uint32 delta, const char* module)
|
|
{
|
|
TIFFDirectory *td = &tif->tif_dir;
|
|
uint64* new_stripoffset;
|
|
uint64* new_stripbytecount;
|
|
|
|
assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
|
|
new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset,
|
|
(td->td_nstrips + delta) * sizeof (uint64));
|
|
new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount,
|
|
(td->td_nstrips + delta) * sizeof (uint64));
|
|
if (new_stripoffset == NULL || new_stripbytecount == NULL) {
|
|
if (new_stripoffset)
|
|
_TIFFfree(new_stripoffset);
|
|
if (new_stripbytecount)
|
|
_TIFFfree(new_stripbytecount);
|
|
td->td_nstrips = 0;
|
|
TIFFErrorExt(tif->tif_clientdata, module, "No space to expand strip arrays");
|
|
return (0);
|
|
}
|
|
td->td_stripoffset = new_stripoffset;
|
|
td->td_stripbytecount = new_stripbytecount;
|
|
_TIFFmemset(td->td_stripoffset + td->td_nstrips,
|
|
0, delta*sizeof (uint64));
|
|
_TIFFmemset(td->td_stripbytecount + td->td_nstrips,
|
|
0, delta*sizeof (uint64));
|
|
td->td_nstrips += delta;
|
|
tif->tif_flags |= TIFF_DIRTYDIRECT;
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Append the data to the specified strip.
|
|
*/
|
|
static int
|
|
TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
|
|
{
|
|
static const char module[] = "TIFFAppendToStrip";
|
|
TIFFDirectory *td = &tif->tif_dir;
|
|
uint64 m;
|
|
int64 old_byte_count = -1;
|
|
|
|
if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
|
|
assert(td->td_nstrips > 0);
|
|
|
|
if( td->td_stripbytecount[strip] != 0
|
|
&& td->td_stripoffset[strip] != 0
|
|
&& td->td_stripbytecount[strip] >= (uint64) cc )
|
|
{
|
|
/*
|
|
* There is already tile data on disk, and the new tile
|
|
* data we have will fit in the same space. The only
|
|
* aspect of this that is risky is that there could be
|
|
* more data to append to this strip before we are done
|
|
* depending on how we are getting called.
|
|
*/
|
|
if (!SeekOK(tif, td->td_stripoffset[strip])) {
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"Seek error at scanline %lu",
|
|
(unsigned long)tif->tif_row);
|
|
return (0);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Seek to end of file, and set that as our location to
|
|
* write this strip.
|
|
*/
|
|
td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END);
|
|
tif->tif_flags |= TIFF_DIRTYSTRIP;
|
|
}
|
|
|
|
tif->tif_curoff = td->td_stripoffset[strip];
|
|
|
|
/*
|
|
* We are starting a fresh strip/tile, so set the size to zero.
|
|
*/
|
|
old_byte_count = td->td_stripbytecount[strip];
|
|
td->td_stripbytecount[strip] = 0;
|
|
}
|
|
|
|
m = tif->tif_curoff+cc;
|
|
if (!(tif->tif_flags&TIFF_BIGTIFF))
|
|
m = (uint32)m;
|
|
if ((m<tif->tif_curoff)||(m<(uint64)cc))
|
|
{
|
|
TIFFErrorExt(tif->tif_clientdata, module, "Maximum TIFF file size exceeded");
|
|
return (0);
|
|
}
|
|
if (!WriteOK(tif, data, cc)) {
|
|
TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanline %lu",
|
|
(unsigned long) tif->tif_row);
|
|
return (0);
|
|
}
|
|
tif->tif_curoff = m;
|
|
td->td_stripbytecount[strip] += cc;
|
|
|
|
if( (int64) td->td_stripbytecount[strip] != old_byte_count )
|
|
tif->tif_flags |= TIFF_DIRTYSTRIP;
|
|
|
|
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 && tif->tif_flags & TIFF_BUF4WRITE ) {
|
|
if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
|
|
(tif->tif_flags & TIFF_NOBITREV) == 0)
|
|
TIFFReverseBits((uint8*)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: */
|
|
/*
|
|
* Local Variables:
|
|
* mode: c
|
|
* c-basic-offset: 8
|
|
* fill-column: 78
|
|
* End:
|
|
*/
|