diff options
Diffstat (limited to 'plugins/FreeImage/src/LibTIFF/tif_write.c')
| -rw-r--r-- | plugins/FreeImage/src/LibTIFF/tif_write.c | 718 |
1 files changed, 718 insertions, 0 deletions
diff --git a/plugins/FreeImage/src/LibTIFF/tif_write.c b/plugins/FreeImage/src/LibTIFF/tif_write.c new file mode 100644 index 0000000000..043e645b87 --- /dev/null +++ b/plugins/FreeImage/src/LibTIFF/tif_write.c @@ -0,0 +1,718 @@ +/* $Id: tif_write.c,v 1.37 2011/04/10 17:14:09 drolon 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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;
+ /*
+ * 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);
+ 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;
+ }
+ /*
+ * 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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 )
+ {
+ /* Force TIFFAppendToStrip() to consider placing data at end
+ of file. */
+ 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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 )
+ {
+ /* Force TIFFAppendToStrip() to consider placing data at end
+ of file. */
+ 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: File not open for writing",
+ tif->tif_name);
+ return (0);
+ }
+ if (tiles ^ isTiled(tif)) {
+ TIFFErrorExt(tif->tif_clientdata, 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)) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Must set \"ImageWidth\" before writing data",
+ tif->tif_name);
+ 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,
+ "%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;
+ TIFFErrorExt(tif->tif_clientdata, 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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;
+ TIFFErrorExt(tif->tif_clientdata, 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)
+{
+ static const char module[] = "TIFFAppendToStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+
+ 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] >= cc )
+ {
+ /*
+ * There is already tile data on disk, and the new tile
+ * data we have to 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_curoff = td->td_stripoffset[strip];
+
+ /*
+ * We are starting a fresh strip/tile, so set the size to zero.
+ */
+ td->td_stripbytecount[strip] = 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 = 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: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
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