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-rw-r--r--tiff/libtiff/tif_jbig.c385
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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 1.2.2.3 2010-06-08 18:50:42 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"
+
+typedef struct
+{
+ uint32 recvparams; /* encoded Class 2 session params */
+ char* subaddress; /* subaddress string */
+ uint32 recvtime; /* time spend receiving in seconds */
+ char* faxdcs; /* encoded fax parameters (DCS, Table 2/T.30) */
+
+ TIFFVGetMethod vgetparent;
+ TIFFVSetMethod vsetparent;
+} JBIGState;
+
+#define GetJBIGState(tif) ((JBIGState*)(tif)->tif_data)
+
+#define FIELD_RECVPARAMS (FIELD_CODEC+0)
+#define FIELD_SUBADDRESS (FIELD_CODEC+1)
+#define FIELD_RECVTIME (FIELD_CODEC+2)
+#define FIELD_FAXDCS (FIELD_CODEC+3)
+
+static const TIFFFieldInfo jbigFieldInfo[] =
+{
+ {TIFFTAG_FAXRECVPARAMS, 1, 1, TIFF_LONG, FIELD_RECVPARAMS, TRUE, FALSE, "FaxRecvParams"},
+ {TIFFTAG_FAXSUBADDRESS, -1, -1, TIFF_ASCII, FIELD_SUBADDRESS, TRUE, FALSE, "FaxSubAddress"},
+ {TIFFTAG_FAXRECVTIME, 1, 1, TIFF_LONG, FIELD_RECVTIME, TRUE, FALSE, "FaxRecvTime"},
+ {TIFFTAG_FAXDCS, -1, -1, TIFF_ASCII, FIELD_FAXDCS, TRUE, FALSE, "FaxDcs"},
+};
+
+static int JBIGSetupDecode(TIFF* tif)
+{
+ if (TIFFNumberOfStrips(tif) != 1)
+ {
+ TIFFError("JBIG", "Multistrip images not supported in decoder");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int JBIGDecode(TIFF* tif, tidata_t buffer, tsize_t size, tsample_t 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, 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, tif->tif_rawdata,
+ 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.
+ */
+ TIFFError("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)
+ {
+ TIFFError("JBIG", "Multistrip images not supported in encoder");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int JBIGCopyEncodedData(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
+{
+ (void) s;
+ while (cc > 0)
+ {
+ tsize_t n = 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 -= 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, len);
+ }
+
+ JBIGCopyEncodedData(tif, buffer, len, 0);
+}
+
+static int JBIGEncode(TIFF* tif, tidata_t buffer, tsize_t size, tsample_t 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;
+}
+
+static void JBIGCleanup(TIFF* tif)
+{
+ JBIGState *sp = GetJBIGState(tif);
+
+ assert(sp != 0);
+
+ tif->tif_tagmethods.vgetfield = sp->vgetparent;
+ tif->tif_tagmethods.vsetfield = sp->vsetparent;
+
+ _TIFFfree(tif->tif_data);
+ tif->tif_data = NULL;
+
+ _TIFFSetDefaultCompressionState(tif);
+}
+
+static void JBIGPrintDir(TIFF* tif, FILE* fd, long flags)
+{
+ JBIGState* codec = GetJBIGState(tif);
+ (void)flags;
+
+ if (TIFFFieldSet(tif, FIELD_RECVPARAMS))
+ {
+ fprintf(fd,
+ " Fax Receive Parameters: %08lx\n",
+ (unsigned long)codec->recvparams);
+ }
+
+ if (TIFFFieldSet(tif, FIELD_SUBADDRESS))
+ {
+ fprintf(fd,
+ " Fax SubAddress: %s\n",
+ codec->subaddress);
+ }
+
+ if (TIFFFieldSet(tif, FIELD_RECVTIME))
+ {
+ fprintf(fd,
+ " Fax Receive Time: %lu secs\n",
+ (unsigned long)codec->recvtime);
+ }
+
+ if (TIFFFieldSet(tif, FIELD_FAXDCS))
+ {
+ fprintf(fd,
+ " Fax DCS: %s\n",
+ codec->faxdcs);
+ }
+}
+
+static int JBIGVGetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+ JBIGState* codec = GetJBIGState(tif);
+
+ switch (tag)
+ {
+ case TIFFTAG_FAXRECVPARAMS:
+ *va_arg(ap, uint32*) = codec->recvparams;
+ break;
+
+ case TIFFTAG_FAXSUBADDRESS:
+ *va_arg(ap, char**) = codec->subaddress;
+ break;
+
+ case TIFFTAG_FAXRECVTIME:
+ *va_arg(ap, uint32*) = codec->recvtime;
+ break;
+
+ case TIFFTAG_FAXDCS:
+ *va_arg(ap, char**) = codec->faxdcs;
+ break;
+
+ default:
+ return (*codec->vgetparent)(tif, tag, ap);
+ }
+
+ return 1;
+}
+
+static int JBIGVSetField(TIFF* tif, ttag_t tag, va_list ap)
+{
+ JBIGState* codec = GetJBIGState(tif);
+
+ switch (tag)
+ {
+ case TIFFTAG_FAXRECVPARAMS:
+ codec->recvparams = va_arg(ap, uint32);
+ break;
+
+ case TIFFTAG_FAXSUBADDRESS:
+ _TIFFsetString(&codec->subaddress, va_arg(ap, char*));
+ break;
+
+ case TIFFTAG_FAXRECVTIME:
+ codec->recvtime = va_arg(ap, uint32);
+ break;
+
+ case TIFFTAG_FAXDCS:
+ _TIFFsetString(&codec->faxdcs, va_arg(ap, char*));
+ break;
+
+ default:
+ return (*codec->vsetparent)(tif, tag, ap);
+ }
+
+ TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ return 1;
+}
+
+int TIFFInitJBIG(TIFF* tif, int scheme)
+{
+ JBIGState* codec = NULL;
+
+ assert(scheme == COMPRESSION_JBIG);
+
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFieldInfo(tif, jbigFieldInfo,
+ TIFFArrayCount(jbigFieldInfo))) {
+ TIFFErrorExt(tif->tif_clientdata, "TIFFInitJBIG",
+ "Merging JBIG codec-specific tags failed");
+ return 0;
+ }
+
+ /* Allocate memory for the JBIGState structure.*/
+ tif->tif_data = (tdata_t)_TIFFmalloc(sizeof(JBIGState));
+ if (tif->tif_data == NULL)
+ {
+ TIFFError("TIFFInitJBIG", "Not enough memory for JBIGState");
+ return 0;
+ }
+ _TIFFmemset(tif->tif_data, 0, sizeof(JBIGState));
+ codec = GetJBIGState(tif);
+
+ /* Initialize codec private fields */
+ codec->recvparams = 0;
+ codec->subaddress = NULL;
+ codec->faxdcs = NULL;
+ codec->recvtime = 0;
+
+ /*
+ * Override parent get/set field methods.
+ */
+ codec->vgetparent = tif->tif_tagmethods.vgetfield;
+ codec->vsetparent = tif->tif_tagmethods.vsetfield;
+ tif->tif_tagmethods.vgetfield = JBIGVGetField;
+ tif->tif_tagmethods.vsetfield = JBIGVSetField;
+ tif->tif_tagmethods.printdir = JBIGPrintDir;
+
+ /*
+ * 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;
+
+ tif->tif_cleanup = JBIGCleanup;
+
+ 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:
+ */
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