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diff --git a/tiff/libtiff/tif_jbig.c b/tiff/libtiff/tif_jbig.c
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+/* $Id: tif_jbig.c,v 1.15 2010-03-10 18:56:48 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.
+ *
+ * JBIG Compression Algorithm Support.
+ * Contributed by Lee Howard <faxguy@deanox.com>
+ *
+ */
+
+#include "tiffiop.h"
+
+#ifdef JBIG_SUPPORT
+#include "jbig.h"
+
+static int JBIGSetupDecode(TIFF* tif)
+{
+ if (TIFFNumberOfStrips(tif) != 1)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "JBIG", "Multistrip images not supported in decoder");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int JBIGDecode(TIFF* tif, uint8* buffer, tmsize_t size, uint16 s)
+{
+ struct jbg_dec_state decoder;
+ int decodeStatus = 0;
+ unsigned char* pImage = NULL;
+ (void) size, (void) s;
+
+ if (isFillOrder(tif, tif->tif_dir.td_fillorder))
+ {
+ TIFFReverseBits(tif->tif_rawdata, tif->tif_rawdatasize);
+ }
+
+ jbg_dec_init(&decoder);
+
+#if defined(HAVE_JBG_NEWLEN)
+ jbg_newlen(tif->tif_rawdata, (size_t)tif->tif_rawdatasize);
+ /*
+ * I do not check the return status of jbg_newlen because even if this
+ * function fails it does not necessarily mean that decoding the image
+ * will fail. It is generally only needed for received fax images
+ * that do not contain the actual length of the image in the BIE
+ * header. I do not log when an error occurs because that will cause
+ * problems when converting JBIG encoded TIFF's to
+ * PostScript. As long as the actual image length is contained in the
+ * BIE header jbg_dec_in should succeed.
+ */
+#endif /* HAVE_JBG_NEWLEN */
+
+ decodeStatus = jbg_dec_in(&decoder, (unsigned char*)tif->tif_rawdata,
+ (size_t)tif->tif_rawdatasize, NULL);
+ if (JBG_EOK != decodeStatus)
+ {
+ /*
+ * XXX: JBG_EN constant was defined in pre-2.0 releases of the
+ * JBIG-KIT. Since the 2.0 the error reporting functions were
+ * changed. We will handle both cases here.
+ */
+ TIFFErrorExt(tif->tif_clientdata,
+ "JBIG", "Error (%d) decoding: %s",
+ decodeStatus,
+#if defined(JBG_EN)
+ jbg_strerror(decodeStatus, JBG_EN)
+#else
+ jbg_strerror(decodeStatus)
+#endif
+ );
+ return 0;
+ }
+
+ pImage = jbg_dec_getimage(&decoder, 0);
+ _TIFFmemcpy(buffer, pImage, jbg_dec_getsize(&decoder));
+ jbg_dec_free(&decoder);
+ return 1;
+}
+
+static int JBIGSetupEncode(TIFF* tif)
+{
+ if (TIFFNumberOfStrips(tif) != 1)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "JBIG", "Multistrip images not supported in encoder");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int JBIGCopyEncodedData(TIFF* tif, unsigned char* pp, size_t cc, uint16 s)
+{
+ (void) s;
+ while (cc > 0)
+ {
+ tmsize_t n = (tmsize_t)cc;
+
+ if (tif->tif_rawcc + n > tif->tif_rawdatasize)
+ {
+ n = tif->tif_rawdatasize - tif->tif_rawcc;
+ }
+
+ assert(n > 0);
+ _TIFFmemcpy(tif->tif_rawcp, pp, n);
+ tif->tif_rawcp += n;
+ tif->tif_rawcc += n;
+ pp += n;
+ cc -= (size_t)n;
+ if (tif->tif_rawcc >= tif->tif_rawdatasize &&
+ !TIFFFlushData1(tif))
+ {
+ return (-1);
+ }
+ }
+
+ return (1);
+}
+
+static void JBIGOutputBie(unsigned char* buffer, size_t len, void* userData)
+{
+ TIFF* tif = (TIFF*)userData;
+
+ if (isFillOrder(tif, tif->tif_dir.td_fillorder))
+ {
+ TIFFReverseBits(buffer, (tmsize_t)len);
+ }
+
+ JBIGCopyEncodedData(tif, buffer, len, 0);
+}
+
+static int JBIGEncode(TIFF* tif, uint8* buffer, tmsize_t size, uint16 s)
+{
+ TIFFDirectory* dir = &tif->tif_dir;
+ struct jbg_enc_state encoder;
+
+ (void) size, (void) s;
+
+ jbg_enc_init(&encoder,
+ dir->td_imagewidth,
+ dir->td_imagelength,
+ 1,
+ &buffer,
+ JBIGOutputBie,
+ tif);
+ /*
+ * jbg_enc_out does the "real" encoding. As data is encoded,
+ * JBIGOutputBie is called, which writes the data to the directory.
+ */
+ jbg_enc_out(&encoder);
+ jbg_enc_free(&encoder);
+
+ return 1;
+}
+
+int TIFFInitJBIG(TIFF* tif, int scheme)
+{
+ assert(scheme == COMPRESSION_JBIG);
+
+ /*
+ * These flags are set so the JBIG Codec can control when to reverse
+ * bits and when not to and to allow the jbig decoder and bit reverser
+ * to write to memory when necessary.
+ */
+ tif->tif_flags |= TIFF_NOBITREV;
+ tif->tif_flags &= ~TIFF_MAPPED;
+
+ /* Setup the function pointers for encode, decode, and cleanup. */
+ tif->tif_setupdecode = JBIGSetupDecode;
+ tif->tif_decodestrip = JBIGDecode;
+
+ tif->tif_setupencode = JBIGSetupEncode;
+ tif->tif_encodestrip = JBIGEncode;
+
+ return 1;
+}
+
+#endif /* JBIG_SUPPORT */
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */