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-rw-r--r--third_party/libtiff/tif_write.c793
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diff --git a/third_party/libtiff/tif_write.c b/third_party/libtiff/tif_write.c
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+++ b/third_party/libtiff/tif_write.c
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+/* $Id: tif_write.c,v 1.42 2015-06-07 23:00:23 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 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, (tmsize_t) -1))
+
+static int TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module);
+static int TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc);
+
+int
+TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
+{
+ static const char module[] = "TIFFWriteScanline";
+ register TIFFDirectory *td;
+ int status, imagegrew = 0;
+ uint32 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);
+ tif->tif_flags |= TIFF_BUF4WRITE; /* not strictly sure this is right*/
+
+ 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, module,
+ "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, module,
+ "%lu: Sample out of range, max %lu",
+ (unsigned long) sample, (unsigned long) 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_32(td->td_imagelength,td->td_rowsperstrip);
+ if (td->td_stripsperimage == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Zero strips per image");
+ return (-1);
+ }
+ 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, (uint8*) buf, tif->tif_scanlinesize );
+
+ status = (*tif->tif_encoderow)(tif, (uint8*) 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.
+ */
+tmsize_t
+TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteEncodedStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+ uint16 sample;
+
+ if (!WRITECHECKSTRIPS(tif, module))
+ return ((tmsize_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, module,
+ "Can not grow image by strips when using separate planes");
+ return ((tmsize_t) -1);
+ }
+ if (!TIFFGrowStrips(tif, 1, module))
+ return ((tmsize_t) -1);
+ td->td_stripsperimage =
+ TIFFhowmany_32(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 ((tmsize_t) -1);
+
+ tif->tif_flags |= TIFF_BUF4WRITE;
+ tif->tif_curstrip = strip;
+
+ if (td->td_stripsperimage == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Zero strips per image");
+ return ((tmsize_t) -1);
+ }
+
+ tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupencode)(tif))
+ return ((tmsize_t) -1);
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+
+ if( td->td_stripbytecount[strip] > 0 )
+ {
+ /* Make sure that at the first attempt of rewriting the tile, we will have */
+ /* more bytes available in the output buffer than the previous byte count, */
+ /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
+ /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
+ if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[strip] )
+ {
+ if( !(TIFFWriteBufferSetup(tif, NULL,
+ (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[strip] + 1), 1024))) )
+ return ((tmsize_t)(-1));
+ }
+
+ /* Force TIFFAppendToStrip() to consider placing data at end
+ of file. */
+ tif->tif_curoff = 0;
+ }
+
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ sample = (uint16)(strip / td->td_stripsperimage);
+ if (!(*tif->tif_preencode)(tif, sample))
+ return ((tmsize_t) -1);
+
+ /* swab if needed - note that source buffer will be altered */
+ tif->tif_postdecode( tif, (uint8*) data, cc );
+
+ if (!(*tif->tif_encodestrip)(tif, (uint8*) data, cc, sample))
+ return (0);
+ if (!(*tif->tif_postencode)(tif))
+ return ((tmsize_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 ((tmsize_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.
+ */
+tmsize_t
+TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteRawStrip";
+ TIFFDirectory *td = &tif->tif_dir;
+
+ if (!WRITECHECKSTRIPS(tif, module))
+ return ((tmsize_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, module,
+ "Can not grow image by strips when using separate planes");
+ return ((tmsize_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_32(td->td_imagelength,td->td_rowsperstrip);
+ if (!TIFFGrowStrips(tif, 1, module))
+ return ((tmsize_t) -1);
+ }
+ tif->tif_curstrip = strip;
+ if (td->td_stripsperimage == 0) {
+ TIFFErrorExt(tif->tif_clientdata, module,"Zero strips per image");
+ return ((tmsize_t) -1);
+ }
+ tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
+ return (TIFFAppendToStrip(tif, strip, (uint8*) data, cc) ?
+ cc : (tmsize_t) -1);
+}
+
+/*
+ * Write and compress a tile of data. The
+ * tile is selected by the (x,y,z,s) coordinates.
+ */
+tmsize_t
+TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
+{
+ if (!TIFFCheckTile(tif, x, y, z, s))
+ return ((tmsize_t)(-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, (tmsize_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).
+ */
+tmsize_t
+TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteEncodedTile";
+ TIFFDirectory *td;
+ uint16 sample;
+ uint32 howmany32;
+
+ if (!WRITECHECKTILES(tif, module))
+ return ((tmsize_t)(-1));
+ td = &tif->tif_dir;
+ if (tile >= td->td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
+ (unsigned long) tile, (unsigned long) td->td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ /*
+ * Handle delayed allocation of data buffer. This
+ * permits it to be sized more intelligently (using
+ * directory information).
+ */
+ if (!BUFFERCHECK(tif))
+ return ((tmsize_t)(-1));
+
+ tif->tif_flags |= TIFF_BUF4WRITE;
+ tif->tif_curtile = tile;
+
+ if( td->td_stripbytecount[tile] > 0 )
+ {
+ /* Make sure that at the first attempt of rewriting the tile, we will have */
+ /* more bytes available in the output buffer than the previous byte count, */
+ /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
+ /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
+ if( tif->tif_rawdatasize <= (tmsize_t) td->td_stripbytecount[tile] )
+ {
+ if( !(TIFFWriteBufferSetup(tif, NULL,
+ (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[tile] + 1), 1024))) )
+ return ((tmsize_t)(-1));
+ }
+
+ /* Force TIFFAppendToStrip() to consider placing data at end
+ of file. */
+ tif->tif_curoff = 0;
+ }
+
+ tif->tif_rawcc = 0;
+ tif->tif_rawcp = tif->tif_rawdata;
+
+ /*
+ * Compute tiles per row & per column to compute
+ * current row and column
+ */
+ howmany32=TIFFhowmany_32(td->td_imagelength, td->td_tilelength);
+ if (howmany32 == 0) {
+ TIFFErrorExt(tif->tif_clientdata,module,"Zero tiles");
+ return ((tmsize_t)(-1));
+ }
+ tif->tif_row = (tile % howmany32) * td->td_tilelength;
+ howmany32=TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth);
+ if (howmany32 == 0) {
+ TIFFErrorExt(tif->tif_clientdata,module,"Zero tiles");
+ return ((tmsize_t)(-1));
+ }
+ tif->tif_col = (tile % howmany32) * td->td_tilewidth;
+
+ if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
+ if (!(*tif->tif_setupencode)(tif))
+ return ((tmsize_t)(-1));
+ tif->tif_flags |= TIFF_CODERSETUP;
+ }
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ sample = (uint16)(tile/td->td_stripsperimage);
+ if (!(*tif->tif_preencode)(tif, sample))
+ return ((tmsize_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, (uint8*) data, cc );
+
+ if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample))
+ return (0);
+ if (!(*tif->tif_postencode)(tif))
+ return ((tmsize_t)(-1));
+ if (!isFillOrder(tif, td->td_fillorder) &&
+ (tif->tif_flags & TIFF_NOBITREV) == 0)
+ TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc);
+ if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
+ tif->tif_rawdata, tif->tif_rawcc))
+ return ((tmsize_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).
+ */
+tmsize_t
+TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
+{
+ static const char module[] = "TIFFWriteRawTile";
+
+ if (!WRITECHECKTILES(tif, module))
+ return ((tmsize_t)(-1));
+ if (tile >= tif->tif_dir.td_nstrips) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
+ (unsigned long) tile,
+ (unsigned long) tif->tif_dir.td_nstrips);
+ return ((tmsize_t)(-1));
+ }
+ return (TIFFAppendToStrip(tif, tile, (uint8*) data, cc) ?
+ cc : (tmsize_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 = (uint64 *)
+ _TIFFmalloc(td->td_nstrips * sizeof (uint64));
+ td->td_stripbytecount = (uint64 *)
+ _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:
+ */