File: foo2zjs.c

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/*

GENERAL
This program converts pbm (B/W) images and 1-bit-per-pixel cmyk images
(both produced by ghostscript) to Zenographics ZJ-stream format. There
is some information about the ZJS format at http://ddk.zeno.com.

With this utility, you can print to some HP and Minolta/QMS printers,
such as these:
     - Minolta/QMS 2300 DL	B/W and color
     - Minolta/QMS 2200 DL	B/W and color
     - Minolta/QMS 2430 DL	B/W and color
     - HP LaserJet 1000		B/W
     - HP LaserJet 1005		B/W

     - HP LaserJet 1018		B/W		-P -z1 -L0
     - HP LaserJet 1020		B/W		-P -z1 -L0
     - HP LaserJet 1022		B/W		-P -z1 -L0
     - HP LaserJet M1319 MFP	B/W		-P -z1 -L0
     - HP LaserJet P2035	B/W		-P -z1 -L0
     - HP LaserJet P2035n	B/W		-P -z1 -L0

     - HP LaserJet Pro M12a	B/W		-P -z2 -L0
     - HP LaserJet Pro M12w	B/W		-P -z2 -L0
     - HP LaserJet Pro P1102	B/W		-P -z2 -L0
     - HP LaserJet Pro P1102w	B/W		-P -z2 -L0
     - HP LaserJet Pro P1566	B/W		-P -z2 -L0
     - HP LaserJet Pro P1606dn	B/W		-P -z2 -L0

     - HP LaserJet Pro CP1025nw	B/W and color	-P -z3 -L0

AUTHORS
This program began life as Robert Szalai's 'pbmtozjs' program.  It
also uses Markus Kuhn's jbig-kit compression library (included, but
also available at http://www.cl.cam.ac.uk/~mgk25/jbigkit/).

The program was overhauled by Rick Richardson to limit data chunk size
to 65536 bytes, add command line options, add color support for the
Minolta/QMS 2300DL, and other miscellaneous features.

You can contact the current author at mailto:rick.richardson@comcast.net

LICENSE
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

If you want to use this program under different license conditions,
then contact the author for an arrangement.

It is possible that certain products which can be built using the jbig
software module might form inventions protected by patent rights in
some countries (e.g., by patents about arithmetic coding algorithms
owned by IBM and AT&T in the USA). Provision of this software by the
author does NOT include any licenses for any patents. In those
countries where a patent license is required for certain applications
of this software module, you will have to obtain such a license
yourself.

*/

static char Version[] = "$Id: foo2zjs.c,v 1.110 2017/12/02 19:41:57 rick Exp $";

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <time.h>
#include "jbig.h"
#include "zjs.h"

/*
 * Command line options
 */
int	Debug = 0;
int	ResX = 1200;
int	ResY = 600;
int	Bpp = 1;
int	PaperCode = DMPAPER_LETTER;
int	PageWidth = 1200 * 8.5;
int	PageHeight = 600 * 11;
int	UpperLeftX = 0;
int	UpperLeftY = 0;
int	LowerRightX = 0;
int	LowerRightY = 0;
int	Copies = 1;
int	Duplex = DMDUPLEX_OFF;
int	SourceCode = DMBIN_AUTO;
int	MediaCode = DMMEDIA_STANDARD;
char	*Username = NULL;
char	*Filename = NULL;
int	Mode = 0;
		#define MODE_MONO	1
		#define MODE_COLOR	2
int	Model = 0;
		#define MODEL_2300DL	0
		#define MODEL_HP1020	1
		#define MODEL_HP_PRO	2
		#define MODEL_HP_PRO_CP	3
		#define MODEL_LAST	3

int	Color2Mono = 0;
int	BlackClears = 0;
int	AllIsBlack = 0;
int	OutputStartPlane = 1;
int	ExtraPad = 16;

int	LogicalOffsetX = 0;
int	LogicalOffsetY = 0;

#define LOGICAL_CLIP_X	2
#define LOGICAL_CLIP_Y	1
int	LogicalClip = LOGICAL_CLIP_X | LOGICAL_CLIP_Y;
int	SaveToner = 0;
int	PageNum = 0;
	#define even_page(x) ( ((x) & 1) == 0 )
	#define odd_page(x) ( ((x) & 1) == 1 )
int	RealWidth;
int	EconoMode = 0;
int     PrintDensity = 3;
int	Dots[4];
int	TotalDots;

int	IsCUPS = 0;

FILE	*EvenPages = NULL;
typedef struct
{
    off_t	b, e;
} SEEKREC;
SEEKREC	SeekRec[2000];
int	SeekIndex = 0;
off_t	SeekMedia;

long JbgOptions[5] =
{
    /* Order */
    JBG_ILEAVE | JBG_SMID,
    /* Options */
    JBG_DELAY_AT | JBG_LRLTWO | JBG_TPDON | JBG_TPBON | JBG_DPON,
    /* L0 */
    128,
    /* MX */
    16,
    /* MY */
    0
};

void
usage(void)
{
    fprintf(stderr,
"Usage:\n"
"   foo2zjs [options] <pbmraw-file >zjs-file\n"
"\n"
"	Convert Ghostscript pbmraw format to a monochrome ZJS stream,\n"
"	for driving the Minolta/QMS 2300 DL network color laser printer\n"
"	and other Zenographics-based black and white printers.\n"
"\n"
"	gs -q -dBATCH -dSAFER -dQUIET -dNOPAUSE \\ \n"
"		-sPAPERSIZE=letter -r1200x600 -sDEVICE=pbmraw \\ \n"
"		-sOutputFile=- - < testpage.ps \\ \n"
"	| foo2zjs -r1200x600 -g10200x6600 -p1 >testpage.zm\n"
"\n"
"   foo2zjs [options] <bitcmyk-file >zjs-file\n"
"   foo2zjs [options] <pksmraw-file >zjs-file\n"
"\n"
"	Convert Ghostscript bitcmyk or pksmraw format to a color ZJS stream,\n"
"	for driving the Minolta/QMS 2300 DL network color laser printer\n"
"	N.B. Color correction is expected to be performed by ghostscript.\n"
"\n"
"	gs -q -dBATCH -dSAFER -dQUIET -dNOPAUSE \\ \n"
"	    -sPAPERSIZE=letter -g10200x6600 -r1200x600 -sDEVICE=bitcmyk \\ \n"
"	    -sOutputFile=- - < testpage.ps \\ \n"
"	| foo2zjs -r1200x600 -g10200x6600 -p1 >testpage.zc\n"
"\n"
"Normal Options:\n"
"-c                Force color mode if autodetect doesn't work\n"
"-d duplex         Duplex code to send to printer [%d]\n"
"                    1=off, 2=longedge, 3=shortedge\n"
"                    4=manual longedge, 5=manual shortedge\n"
"-g <xpix>x<ypix>  Set page dimensions in pixels [%dx%d]\n"
"-m media          Media code to send to printer [%d]\n"
"                  -z0:\n"
"                    1=standard, 2=transparency, 3=glossy, 257=envelope,\n"
"                    259=letterhead, 261=thickstock, 262=postcard, 263=labels\n"
"                  -z1,-z2: above plus\n"
"                    258=light, 261=cardstock, 263=rough, 265=labels,\n"
"                    267=envelope, 273=vellum, 512=color, 513=letterhead,\n"
"                    514=preprinted, 515=prepunched, 516=recycled\n"
"-p paper          Paper code to send to printer [%d]\n"
"                  -z0:\n"
"                    1=letter, 5=legal, 7=executive, 9=A4, 11=A5, 13=B5jis\n"
"                    20=env#10, 27=envDL 28=envC5 34=envB5 37=envMonarch\n"
"                  -z1: -z0 plus\n"
"                    257=16K 197x273, 258=fanfold german legal, 259=b5iso,\n"
"                    260=postcard, 261=doublepostcard, 262=A6\n"
"                  -z2: -z0 plus\n"
"                    43=postcard, 70=A6, 82=double postcard rotated,\n"
"                    257=16K 197x273, 263=16K 184x260, 264=16K 195x270,\n"
"                    258=fanfold german legal\n"
"                  -z3: -z0 plus\n"
"                    43=postcard, 70=A6, 82=double postcard rotated,\n"
"                    257=16K 197x273, 263=16K 184x260, 264=16K 195x270,\n"
"                    258=fanfold german legal, 268=photo4x6, 269=photo5x8,\n"
"                    270=photo10x15\n"
"-n copies         Number of copies [%d]\n"
"-r <xres>x<yres>  Set device resolution in pixels/inch [%dx%d]\n"
"-s source         Source code to send to printer [%d]\n"
"                    1=upper 2=lower 4=manual 7=auto\n"
"                    Code numbers may vary with printer model\n"
"-t                Draft mode.  Every other pixel is white.\n"
"-T density        Print density (1-5) [%d].\n"
"-J filename       Filename string to send to printer [%s]\n"
"-U username       Username string to send to printer [%s]\n"
"\n"
"Printer Tweaking Options:\n"
"-u <xoff>x<yoff>  Set offset of upper left printable in pixels [%dx%d]\n"
"-l <xoff>x<yoff>  Set offset of lower right printable in pixels [%dx%d]\n"
"-L mask           Send logical clipping values from -u/-l in ZjStream [%d]\n"
"                  0=no, 1=Y, 2=X, 3=XY\n"
"-A                AllIsBlack: convert C=1,M=1,Y=1 to just K=1\n"
"-B                BlackClears: K=1 forces C,M,Y to 0\n"
"                  -A, -B work with bitcmyk input only\n"
"-P                Do not output START_PLANE codes.  May be needed by some\n"
"                  some black and white only printers.\n"
"-X padlen         Add extra zero padding to the end of BID segments [%d]\n"
"-z model          Model: [%d]\n"
"                    0=KM 2300DL / HP 1000 / HP 1005\n"
"                    1=HP 1018 / HP 1020 / HP 1022\n"
"                    2=HP Pro P1102 / P1566 / P1606dn\n"
"                    3=HP Pro CP102?nw\n"
"\n"
"Debugging Options:\n"
"-S plane          Output just a single color plane from a color print [all]\n"
"                  1=Cyan, 2=Magenta, 3=Yellow, 4=Black\n"
"-D lvl            Set Debug level [%d]\n"
"-V                Version %s\n"
    , Duplex
    , PageWidth , PageHeight
    , MediaCode
    , PaperCode
    , Copies
    , ResX , ResY
    , SourceCode
    , PrintDensity
    , Filename ? Filename : ""
    , Username ? Username : ""
    , UpperLeftX , UpperLeftY
    , LowerRightX , LowerRightY
    , LogicalClip
    , ExtraPad
    , Model
    , Debug
    , Version
    );

  exit(1);
}

/*
 * Mirror1: bits 01234567 become 76543210
 */
unsigned char	Mirror1[256] =
{
	  0,128, 64,192, 32,160, 96,224, 16,144, 80,208, 48,176,112,240,
	  8,136, 72,200, 40,168,104,232, 24,152, 88,216, 56,184,120,248,
	  4,132, 68,196, 36,164,100,228, 20,148, 84,212, 52,180,116,244,
	 12,140, 76,204, 44,172,108,236, 28,156, 92,220, 60,188,124,252,
	  2,130, 66,194, 34,162, 98,226, 18,146, 82,210, 50,178,114,242,
	 10,138, 74,202, 42,170,106,234, 26,154, 90,218, 58,186,122,250,
	  6,134, 70,198, 38,166,102,230, 22,150, 86,214, 54,182,118,246,
	 14,142, 78,206, 46,174,110,238, 30,158, 94,222, 62,190,126,254,
	  1,129, 65,193, 33,161, 97,225, 17,145, 81,209, 49,177,113,241,
	  9,137, 73,201, 41,169,105,233, 25,153, 89,217, 57,185,121,249,
	  5,133, 69,197, 37,165,101,229, 21,149, 85,213, 53,181,117,245,
	 13,141, 77,205, 45,173,109,237, 29,157, 93,221, 61,189,125,253,
	  3,131, 67,195, 35,163, 99,227, 19,147, 83,211, 51,179,115,243,
	 11,139, 75,203, 43,171,107,235, 27,155, 91,219, 59,187,123,251,
	  7,135, 71,199, 39,167,103,231, 23,151, 87,215, 55,183,119,247,
	 15,143, 79,207, 47,175,111,239, 31,159, 95,223, 63,191,127,255,
};

/*
 * Mirror2: bits 01234567 become 67452301
 */
unsigned char	Mirror2[256] =
{
	  0, 64,128,192, 16, 80,144,208, 32, 96,160,224, 48,112,176,240,
	  4, 68,132,196, 20, 84,148,212, 36,100,164,228, 52,116,180,244,
	  8, 72,136,200, 24, 88,152,216, 40,104,168,232, 56,120,184,248,
	 12, 76,140,204, 28, 92,156,220, 44,108,172,236, 60,124,188,252,
	  1, 65,129,193, 17, 81,145,209, 33, 97,161,225, 49,113,177,241,
	  5, 69,133,197, 21, 85,149,213, 37,101,165,229, 53,117,181,245,
	  9, 73,137,201, 25, 89,153,217, 41,105,169,233, 57,121,185,249,
	 13, 77,141,205, 29, 93,157,221, 45,109,173,237, 61,125,189,253,
	  2, 66,130,194, 18, 82,146,210, 34, 98,162,226, 50,114,178,242,
	  6, 70,134,198, 22, 86,150,214, 38,102,166,230, 54,118,182,246,
	 10, 74,138,202, 26, 90,154,218, 42,106,170,234, 58,122,186,250,
	 14, 78,142,206, 30, 94,158,222, 46,110,174,238, 62,126,190,254,
	  3, 67,131,195, 19, 83,147,211, 35, 99,163,227, 51,115,179,243,
	  7, 71,135,199, 23, 87,151,215, 39,103,167,231, 55,119,183,247,
	 11, 75,139,203, 27, 91,155,219, 43,107,171,235, 59,123,187,251,
	 15, 79,143,207, 31, 95,159,223, 47,111,175,239, 63,127,191,255,
};

/*
 * Mirror4: bits 01234567 become 45670123
 */
unsigned char	Mirror4[256] =
{
	  0, 16, 32, 48, 64, 80, 96,112,128,144,160,176,192,208,224,240,
	  1, 17, 33, 49, 65, 81, 97,113,129,145,161,177,193,209,225,241,
	  2, 18, 34, 50, 66, 82, 98,114,130,146,162,178,194,210,226,242,
	  3, 19, 35, 51, 67, 83, 99,115,131,147,163,179,195,211,227,243,
	  4, 20, 36, 52, 68, 84,100,116,132,148,164,180,196,212,228,244,
	  5, 21, 37, 53, 69, 85,101,117,133,149,165,181,197,213,229,245,
	  6, 22, 38, 54, 70, 86,102,118,134,150,166,182,198,214,230,246,
	  7, 23, 39, 55, 71, 87,103,119,135,151,167,183,199,215,231,247,
	  8, 24, 40, 56, 72, 88,104,120,136,152,168,184,200,216,232,248,
	  9, 25, 41, 57, 73, 89,105,121,137,153,169,185,201,217,233,249,
	 10, 26, 42, 58, 74, 90,106,122,138,154,170,186,202,218,234,250,
	 11, 27, 43, 59, 75, 91,107,123,139,155,171,187,203,219,235,251,
	 12, 28, 44, 60, 76, 92,108,124,140,156,172,188,204,220,236,252,
	 13, 29, 45, 61, 77, 93,109,125,141,157,173,189,205,221,237,253,
	 14, 30, 46, 62, 78, 94,110,126,142,158,174,190,206,222,238,254,
	 15, 31, 47, 63, 79, 95,111,127,143,159,175,191,207,223,239,255,
};

int BlackOnes[256] =
{
    0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
    1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
    1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
    2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
    1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
    2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
    2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
    3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
    1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
    2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
    2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
    3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
    2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
    3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
    3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
    4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8
};

void
rotate_bytes_180(unsigned char *sp, unsigned char *ep, unsigned char *mirror)
{
    unsigned char tmp;

    while (sp < ep)
    {
	tmp = mirror[*sp];
	*sp = mirror[*ep];
	*ep = tmp;
	++sp;
	--ep;
    }
    if (sp == ep)
	*sp = mirror[*sp];
}

void
debug(int level, char *fmt, ...)
{
    va_list ap;

    if (Debug < level)
	return;

    setvbuf(stderr, (char *) NULL, _IOLBF, BUFSIZ);
    va_start(ap, fmt);
    vfprintf(stderr, fmt, ap);
    va_end(ap);
}

void
error(int fatal, char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    vfprintf(stderr, fmt, ap);
    va_end(ap);

    if (fatal)
	exit(fatal);
}

static void
chunk_write_rsvd(unsigned long type, unsigned int rsvd,
		    unsigned long items, unsigned long size, FILE *fp)
{
    ZJ_HEADER	chunk;
    int		rc;

    chunk.type = be32(type);
    chunk.items = be32(items);
    chunk.size = be32(sizeof(ZJ_HEADER) + size);
    chunk.reserved = be16(rsvd);
    chunk.signature = 0x5a5a;
    rc = fwrite(&chunk, 1, sizeof(ZJ_HEADER), fp);
    if (rc == 0) error(1, "fwrite(1): rc == 0!\n");
}

static void
chunk_write(unsigned long type, unsigned long items, unsigned long size,
	    FILE *fp)
{
    chunk_write_rsvd(type, 0, items, size, fp);
}

static void
item_uint32_write(unsigned short item, unsigned long value, FILE *fp)
{
    ZJ_ITEM_UINT32 item_uint32;
    int		rc;

    item_uint32.header.size = be32(sizeof(ZJ_ITEM_UINT32));
    item_uint32.header.item = be16(item);
    item_uint32.header.type = ZJIT_UINT32;
    item_uint32.header.param = 0;
    item_uint32.value = be32(value);
    rc = fwrite(&item_uint32, 1, sizeof(ZJ_ITEM_UINT32), fp);
    if (rc == 0) error(1, "fwrite(2): rc == 0!\n");
}

static int
item_str_write(unsigned short item, char *str, FILE *fp)
{
    int			lenpadded;
    ZJ_ITEM_HEADER	hdr;
    int			rc;

    lenpadded = 4 * ((strlen(str)+1 + 3) / 4);

    hdr.size = be32(sizeof(hdr) + lenpadded);
    hdr.item = be16(item);
    hdr.type = ZJIT_STRING;
    hdr.param = 0;
    if (fp)
    {
	rc = fwrite(&hdr, sizeof(hdr), 1, fp);
	if (rc == 0) error(1, "fwrite(3): rc == 0!\n");
	rc = fwrite(str, lenpadded, 1, fp);
	if (rc == 0) error(1, "fwrite(4): rc == 0!\n");
    }
    return (sizeof(hdr) + lenpadded);
}

/*
 * A linked list of compressed data
 */
typedef struct _BIE_CHAIN{
    unsigned char	*data;
    size_t		len;
    struct _BIE_CHAIN	*next;
} BIE_CHAIN;

void
free_chain(BIE_CHAIN *chain)
{
    BIE_CHAIN	*next;
    next = chain;
    while ((chain = next))
    {
	next = chain->next;
	if (chain->data)
	    free(chain->data);
	free(chain);
    }
}

int
write_plane(int planeNum, BIE_CHAIN **root, FILE *fp)
{
    BIE_CHAIN	*current = *root;
    BIE_CHAIN	*next;
    int		i, len, pad_len;
    #define	PADTO		4

    debug(3, "Write Plane %d\n", planeNum); 

    /* error handling */
    if (!current) 
	error(1,"There is no JBIG!\n"); 
    if (!current->next)
	error(1,"There is no or wrong JBIG header!\n"); 
    if (current->len != 20)
	error(1,"wrong BIH length\n"); 

    if (planeNum)
    {
	if (Model == MODEL_HP_PRO_CP)
	    chunk_write_rsvd(ZJT_START_PLANE, 1 * 12,
			1, 1*sizeof(ZJ_ITEM_UINT32), fp);
	else
	    chunk_write(ZJT_START_PLANE, 1, 1*sizeof(ZJ_ITEM_UINT32), fp);
	item_uint32_write(ZJI_PLANE, planeNum, fp);
    }

    for (current = *root; current && current->len; current = current->next)
    {
	if (current == *root)
	{
	    chunk_write(ZJT_JBIG_BIH, 0, current->len, fp);
	    fwrite(current->data, 1, current->len, fp);
	}
	else
	{
	    len = current->len;
	    next = current->next;
	    if (!next || !next->len)
		pad_len = ExtraPad + PADTO * ((len+PADTO-1)/PADTO) - len;
	    else
		pad_len = 0;
	    chunk_write(ZJT_JBIG_BID, 0, len + pad_len, fp);
	    fwrite(current->data, 1, len, fp);
	    for (i = 0; i < pad_len; i++ )
		putc(0, fp);
	}
    }

    free_chain(*root);

    switch (Model)
    {
    case MODEL_2300DL:
    case MODEL_HP1020:
	chunk_write(ZJT_END_JBIG, 0, 0, fp);
	break;
    case MODEL_HP_PRO:
    case MODEL_HP_PRO_CP:
	if (Duplex == DMDUPLEX_LONGEDGE	|| Duplex == DMDUPLEX_SHORTEDGE)
	{
	    int nitems = 1;

	    chunk_write_rsvd(ZJT_END_JBIG, nitems * 12,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), fp);
	    item_uint32_write(ZJI_DMDUPLEX, Duplex,	fp);
	}
	else
	    chunk_write(ZJT_END_JBIG, 0, 0, fp);
	break;
    }

    switch (Model)
    {
    case MODEL_HP_PRO_CP:
	if (planeNum)
	{
	    int nitems = 1;

	    chunk_write_rsvd(ZJT_END_PLANE, nitems * 12,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), fp);
	    item_uint32_write(ZJI_PLANE, planeNum,	fp);
	}
	break;
    default:
	if (planeNum)
	    chunk_write(ZJT_END_PLANE, 0, 0, fp);
	break;
    }

    return 0;
}

void
start_page(BIE_CHAIN **root, int nbie, FILE *ofp)
{
    BIE_CHAIN		*current = *root;
    unsigned long	w, h;
    static int		pageno = 0;
    int			nitems;

    /* error handling */
    if (!current)
	error(1, "There is no JBIG!\n"); 
    if (!current->next)
	error(1, "There is no or wrong JBIG header!\n"); 
    if (current->len != 20 )
	error(1,"wrong BIH length\n"); 

  /* startpage, jbig_bih, jbig_bid, jbig_end, endpage */
    w = (((long) current->data[ 4] << 24)
	    | ((long) current->data[ 5] << 16)
	    | ((long) current->data[ 6] <<  8)
	    | (long) current->data[ 7]);
    h = (((long) current->data[ 8] << 24)
	    | ((long) current->data[ 9] << 16)
	    | ((long) current->data[10] <<  8)
	    | (long) current->data[11]);
    TotalDots = w*h;
    debug(9, "start_page: w x h = %d x %d\n", w, h);

    nitems = 12;
    if (LogicalOffsetX != 0)
	++nitems;
    if (LogicalOffsetY != 0)
	++nitems;
    switch (Model)
    {
    case MODEL_2300DL:
	nitems += 4;
	nitems += 1;
	chunk_write(ZJT_START_PAGE,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), ofp);
	break;
    case MODEL_HP1020:
	nitems += 1;
	chunk_write_rsvd(ZJT_START_PAGE, 0x9c,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), ofp);
	break;
    case MODEL_HP_PRO:
    case MODEL_HP_PRO_CP:
	nitems += 1;
	if (EconoMode)
	    nitems += 1;
	if (Duplex == DMDUPLEX_LONGEDGE || Duplex == DMDUPLEX_SHORTEDGE)
	    nitems += 1;
	chunk_write_rsvd(ZJT_START_PAGE, nitems * 12,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), ofp);
	break;
    }

    if (Model == MODEL_HP_PRO_CP)
	item_uint32_write(ZJI_PLANE,           nbie,   	       ofp);

    if ( (Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP) && 
	    (Duplex == DMDUPLEX_LONGEDGE || Duplex == DMDUPLEX_SHORTEDGE) )
	item_uint32_write(ZJI_DMDUPLEX, (Duplex <= 3) ? Duplex : 1,	ofp);
    if (Model == MODEL_2300DL || Model == MODEL_HP1020 || EconoMode)
	item_uint32_write(ZJI_ECONOMODE,           EconoMode,      ofp);
    if (Model == MODEL_2300DL)
	item_uint32_write(22,                  1,              ofp);
    item_uint32_write(ZJI_VIDEO_X,             RealWidth / Bpp,ofp);
    item_uint32_write(ZJI_VIDEO_Y,             h,              ofp);
    item_uint32_write(ZJI_VIDEO_BPP,           Bpp,            ofp);

    if (Model == MODEL_HP_PRO_CP)
	item_uint32_write(ZJI_RASTER_X,        w,      ofp);
    else
	item_uint32_write(ZJI_RASTER_X,        RealWidth,      ofp);

    item_uint32_write(ZJI_RASTER_Y,            h,              ofp);
    if (LogicalOffsetX != 0)
	item_uint32_write(ZJI_OFFSET_X,        LogicalOffsetX, ofp);
    if (LogicalOffsetY != 0)
	item_uint32_write(ZJI_OFFSET_Y,        LogicalOffsetY, ofp);
    if (Model == MODEL_2300DL)
    {
	item_uint32_write(ZJI_MINOLTA_CUSTOM_X,
	    PaperCode == 256 ? PageWidth : 0,                  ofp);
	item_uint32_write(ZJI_MINOLTA_CUSTOM_Y,
	    PaperCode == 256 ? PageHeight : 0,                  ofp);
    }
    item_uint32_write(ZJI_NBIE,                nbie,           ofp);
    item_uint32_write(ZJI_RESOLUTION_X,        ResX,           ofp);
    item_uint32_write(ZJI_RESOLUTION_Y,        ResY,           ofp);
    if (Model == MODEL_HP_PRO)
	item_uint32_write(ZJI_RET,             1,     	       ofp);
    item_uint32_write(ZJI_DMDEFAULTSOURCE,     SourceCode,     ofp);
    item_uint32_write(ZJI_DMCOPIES,            Copies,         ofp);
    item_uint32_write(ZJI_DMPAPER,             PaperCode,      ofp);
    item_uint32_write(ZJI_DMMEDIATYPE,         MediaCode,      ofp);
    if (even_page(PageNum) && EvenPages)
	SeekMedia = ftell(EvenPages) - 4;
    ++pageno;
    if (Model == MODEL_2300DL)
	item_uint32_write(ZJI_MINOLTA_PAGE_NUMBER, pageno,       ofp);
    if (IsCUPS)
	fprintf(stderr, "PAGE: %d %d\n", pageno, Copies);
}

void
end_page(FILE *ofp)
{
    switch (Model)
    {
    case MODEL_2300DL:
    case MODEL_HP1020:
	chunk_write(ZJT_END_PAGE, 0, 0, ofp);
	break;
    case MODEL_HP_PRO:
	if (Duplex == DMDUPLEX_LONGEDGE	|| Duplex == DMDUPLEX_SHORTEDGE)
	{
	    int nitems = 1;

	    chunk_write_rsvd(ZJT_END_PAGE, nitems * 12,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), ofp);
	    item_uint32_write(ZJI_DMDUPLEX, Duplex,	ofp);
	}
	else
	    chunk_write(ZJT_END_PAGE, 0, 0, ofp);
	break;
    case MODEL_HP_PRO_CP:
	{
	    int nitems = 8;

	    chunk_write_rsvd(ZJT_END_PAGE, nitems * 12,
			nitems, nitems * sizeof(ZJ_ITEM_UINT32), ofp);
	    item_uint32_write(ZJI_HP_CDOTS, Dots[0],	ofp);
	    item_uint32_write(ZJI_HP_MDOTS, Dots[2],	ofp);
	    item_uint32_write(ZJI_HP_YDOTS, Dots[1],	ofp);
	    item_uint32_write(ZJI_HP_KDOTS, Dots[3],	ofp);
	    item_uint32_write(ZJI_HP_CWHITE, Dots[0],	ofp);
	    item_uint32_write(ZJI_HP_MWHITE, Dots[2],	ofp);
	    item_uint32_write(ZJI_HP_YWHITE, Dots[1],	ofp);
	    item_uint32_write(ZJI_HP_KWHITE, Dots[3],	ofp);
	}
	break;
    }
}

int
write_page(BIE_CHAIN **root, BIE_CHAIN **root2,
	BIE_CHAIN **root3, BIE_CHAIN **root4, FILE *ofp)
{
    int	nbie = root2 ? 4 : 1;

    start_page(root, nbie, ofp);

    if (root3)
	write_plane(3, root3, ofp);
    if (root2)
	write_plane(2, root2, ofp);
    if (root)
    {
	if (OutputStartPlane)
	    write_plane(nbie == 1 ? 4 : 1, root, ofp);
	else
	    write_plane(nbie == 1 ? 0 : 1, root, ofp);
    }
    if (root4)
	write_plane(4, root4, ofp);

    end_page(ofp);
    return 0;
}

/*
 * This creates a linked list of compressed data.  The first item
 * in the list is the BIH and is always 20 bytes in size.  Each following
 * item is 65536 bytes in length.  The last item length is whatever remains.
 */
void
output_jbig(unsigned char *start, size_t len, void *cbarg)
{
    BIE_CHAIN	*current, **root = (BIE_CHAIN **) cbarg;
    int		size = 65536;	// Printer does strange things otherwise.

    if ( (*root) == NULL)
    {
	(*root) = malloc(sizeof(BIE_CHAIN));
	if (!(*root))
	    error(1, "Can't allocate space for chain\n");

	(*root)->data = NULL;
	(*root)->next = NULL;
	(*root)->len = 0;
	size = 20;
	if (len != 20)
	    error(1, "First chunk must be BIH and 20 bytes long\n");
    }

    current = *root;  
    while (current->next)
	current = current->next;

    while (len > 0)
    {
	int	amt, left;

	if (!current->data)
	{
	    current->data = malloc(size);
	    if (!current->data)
		error(1, "Can't allocate space for compressed data\n");
	}

	left = size - current->len;
	amt = (len > left) ? left : len;
	memcpy(current->data + current->len, start, amt); 
	current->len += amt;
	len -= amt;
	start += amt;

	if (current->len == size)
	{
	    current->next = malloc(sizeof(BIE_CHAIN));
	    if (!current->next)
		error(1, "Can't allocate space for chain\n");
	    current = current->next;
	    current->data = NULL;
	    current->next = NULL;
	    current->len = 0;
	}
    }
}

void
start_doc(FILE *fp)
{
    char	header[4] = "JZJZ";	// Big-endian data
    int		nitems;
    int		size;
    time_t      now;
    struct tm   *tmp;
    char        datetime[14+1];

    switch (Model)
    {
    case MODEL_HP1020:
    case MODEL_HP_PRO:
    case MODEL_HP_PRO_CP:
	now = time(NULL);
	tmp = localtime(&now);
	strftime(datetime, sizeof(datetime), "%Y%m%d%H%M%S", tmp);

	fprintf(fp, "\033%%-12345X@PJL JOB\n");
	fprintf(fp, "@PJL SET JAMRECOVERY=OFF\n");
	fprintf(fp, "@PJL SET DENSITY=%d\n", PrintDensity);
	fprintf(fp, "@PJL SET ECONOMODE=%s\n", EconoMode ? "ON" : "OFF");
	fprintf(fp, "@PJL SET RET=MEDIUM\n");
	fprintf(fp, "@PJL INFO STATUS\n");
	fprintf(fp, "@PJL USTATUS DEVICE = ON\n");
	fprintf(fp, "@PJL USTATUS JOB = ON\n");
	fprintf(fp, "@PJL USTATUS PAGE = ON\n");
	fprintf(fp, "@PJL USTATUS TIMED = 30\n");
	fprintf(fp, "@PJL SET JOBATTR=\"JobAttr4=%s\"", datetime);
	fputc(0, fp);
	fprintf(fp, "\033%%-12345X");
	break;
    }

    fwrite(header, 1, sizeof(header), fp);

    nitems = 1;
    switch (Model)
    {
    case MODEL_2300DL:
	nitems += 3;
	break;
    case MODEL_HP1020:
    case MODEL_HP_PRO_CP:
	nitems += 2;
	break;
    case MODEL_HP_PRO:
	if (Duplex != DMDUPLEX_LONGEDGE && Duplex != DMDUPLEX_SHORTEDGE)
	    ++nitems;
	break;
    }
    size = nitems * sizeof(ZJ_ITEM_UINT32);
    if (Username)
    {
	++nitems;
	size += item_str_write(0, Username, NULL);
    }
    if (Filename)
    {
	++nitems;
	size += item_str_write(0, Filename, NULL);
    }

    switch (Model)
    {
    case MODEL_2300DL:
	chunk_write(ZJT_START_DOC, nitems, size, fp);
	break;
    case MODEL_HP1020:
	chunk_write_rsvd(ZJT_START_DOC, 0x24, nitems, size, fp);
	break;
    case MODEL_HP_PRO:
    case MODEL_HP_PRO_CP:
	chunk_write_rsvd(ZJT_START_DOC, nitems * 0x0c, nitems, size, fp);
	break;
    }

    item_uint32_write(ZJI_DMCOLLATE,		0,	  fp);
    switch (Model)
    {
    case MODEL_2300DL:
    case MODEL_HP1020:
    case MODEL_HP_PRO_CP:
	item_uint32_write(ZJI_DMDUPLEX, (Duplex <= 3) ? Duplex : 1,	  fp);
	item_uint32_write(ZJI_PAGECOUNT,		0,	  fp);
	break;
    case MODEL_HP_PRO:
	if (Duplex != DMDUPLEX_LONGEDGE && Duplex != DMDUPLEX_SHORTEDGE)
	    item_uint32_write(ZJI_DMDUPLEX, 1,    	  fp);
	break;
    }

    if (Model == MODEL_2300DL)
	item_uint32_write(ZJI_QUANTITY,		1,	  fp);
    // item_uint32_write(ZJI_QMS_FINEMODE,	0,	  fp);
    // item_uint32_write(ZJI_QMS_OUTBIN,	1,	  fp);

    if (Username)
	item_str_write(ZJI_MINOLTA_USERNAME,	Username, fp);
    if (Filename)
	item_str_write(ZJI_MINOLTA_FILENAME,	Filename, fp);
}

void
end_doc(FILE *fp)
{
    int			nitems;

    nitems = 0;
    chunk_write(ZJT_END_DOC , nitems, nitems * sizeof(ZJ_ITEM_UINT32), fp);

    switch (Model)
    {
    case MODEL_HP1020:
    case MODEL_HP_PRO:
    case MODEL_HP_PRO_CP:
	fprintf(fp, "\033%%-12345X@PJL EOJ\n");
	fprintf(fp, "\033%%-12345X");
	break;
    }
}

void
load_tray2(FILE *fp)
{
    int			nitems;

    nitems = 0;
    chunk_write(ZJT_2600N_PAUSE, nitems, nitems * sizeof(ZJ_ITEM_UINT32), fp);
}

int
compute_image_dots(int w, int h, unsigned char *bitmap)
{
    int dots = 0;
    int x, y, bpl;

    switch (Model)
    {
    case MODEL_HP_PRO_CP:
	bpl = (w + 7) / 8;
	for (y = 0; y < h; ++y)
	    for (x = 0; x < bpl; ++x)
		dots += BlackOnes[ bitmap[y*bpl + x] ];
	return dots;
    default:
	return 0;
    }
}

static int AnyColor;

void
cmyk_planes(unsigned char *plane[4], unsigned char *raw, int w, int h)
{
    int			rawbpl = (w+1) / 2;
    int			bpl = (w + 7) / 8;
    int			i;
    int			x, y;
    unsigned char	byte;
    unsigned char	mask[8] = { 128, 64, 32, 16, 8, 4, 2, 1 };
    int			aib = AllIsBlack;
    int			bc = BlackClears;

    if (Model != MODEL_2300DL)
	bpl = (bpl + 15) & ~15;
    debug(1, "w=%d, bpl=%d, rawbpl=%d\n", w, bpl, rawbpl);

    AnyColor = 0;
    for (i = 0; i < 4; ++i)
	memset(plane[i], 0, bpl * h);

    //
    // Unpack the combined plane into individual color planes
    //
    // TODO: this can be speeded up using a 256 or 65536 entry lookup table
    //
    for (y = 0; y < h; ++y)
    {
	for (x = 0; x < w; ++x)
	{
	    byte = raw[y*rawbpl + x/2];

	    if (aib && (byte & 0xE0) == 0xE0)
	    {
		plane[3][y*bpl + x/8] |= mask[x&7];
	    }
	    else if (byte & 0x10)
	    {
		plane[3][y*bpl + x/8] |= mask[x&7];
		if (!bc)
		{
		    if (byte & 0x80) plane[0][y*bpl + x/8] |= mask[x&7];
		    if (byte & 0x40) plane[1][y*bpl + x/8] |= mask[x&7];
		    if (byte & 0x20) plane[2][y*bpl + x/8] |= mask[x&7];
		    if (byte & 0xE0) AnyColor |= byte;
		}
	    }
	    else
	    {
		if (byte & 0x80) plane[0][y*bpl + x/8] |= mask[x&7];
		if (byte & 0x40) plane[1][y*bpl + x/8] |= mask[x&7];
		if (byte & 0x20) plane[2][y*bpl + x/8] |= mask[x&7];
		if (byte & 0xE0) AnyColor |= byte;
	    }

	    ++x;
	    if (aib && (byte & 0x0E) == 0x0E)
	    {
		plane[3][y*bpl + x/8] |= mask[x&7];
	    }
	    else if (byte & 0x1)
	    {
		plane[3][y*bpl + x/8] |= mask[x&7];
		if (!bc)
		{
		    if (byte & 0x8) plane[0][y*bpl + x/8] |= mask[x&7];
		    if (byte & 0x4) plane[1][y*bpl + x/8] |= mask[x&7];
		    if (byte & 0x2) plane[2][y*bpl + x/8] |= mask[x&7];
		    if (byte & 0xE) AnyColor |= byte;
		}
	    }
	    else
	    {
		if (byte & 0x8) plane[0][y*bpl + x/8] |= mask[x&7];
		if (byte & 0x4) plane[1][y*bpl + x/8] |= mask[x&7];
		if (byte & 0x2) plane[2][y*bpl + x/8] |= mask[x&7];
		if (byte & 0xE) AnyColor |= byte;
	    }
	}
    }
    debug(2, "BlackClears = %d; AnyColor = %s %s %s\n",
	    BlackClears,
	    (AnyColor & 0x88) ? "Cyan" : "",
	    (AnyColor & 0x44) ? "Magenta" : "",
	    (AnyColor & 0x22) ? "Yellow" : ""
	    );
}

int
cmyk_page(unsigned char *raw, int w, int h, FILE *ofp)
{
    BIE_CHAIN *chain[4];
    int	i;
    int	bpl, bpl16;
    unsigned char *plane[4], *bitmaps[4][1];
    struct jbg_enc_state se[4]; 

    RealWidth = w;
    if (Model == MODEL_HP1020
	|| Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP)
    {
	w = (w + 127) & ~127;
	bpl = (w + 7) / 8;
	bpl16 = (bpl + 15) & ~15;
    }
    else
    {
	bpl = (w + 7) / 8;
	bpl16 = bpl;
    }
    debug(1, "w = %d, bpl = %d, bpl16 = %d\n", w, bpl, bpl16);

    for (i = 0; i < 4; ++i)
    {
	plane[i] = malloc(bpl16 * h);
	if (!plane[i]) error(3, "Cannot allocate space for bit plane\n");
	chain[i] = NULL;
    }

    cmyk_planes(plane, raw, RealWidth, h);
    for (i = 0; i < 4; ++i)
    {
	if (Debug >= 9)
	{
	    FILE *dfp;
	    char fname[256];

	    sprintf(fname, "xxxplane%d", i);
	    dfp = fopen(fname, "w");
	    if (dfp)
	    {
		fwrite(plane[i], bpl*h, 1, dfp);
		fclose(dfp);
	    }
	}

	Dots[i] = compute_image_dots(w, h, plane[i]);

	*bitmaps[i] = plane[i];

	jbg_enc_init(&se[i], w, h, 1, bitmaps[i], output_jbig, &chain[i]);
	jbg_enc_options(&se[i], JbgOptions[0], JbgOptions[1],
			JbgOptions[2], JbgOptions[3], JbgOptions[4]);
	jbg_enc_out(&se[i]);
	jbg_enc_free(&se[i]);
    }

    if (Color2Mono)
	write_page(&chain[Color2Mono-1], NULL, NULL, NULL, ofp);
    else if (AnyColor)
	write_page(&chain[0], &chain[1], &chain[2], &chain[3], ofp);
    else
	write_page(&chain[3], NULL, NULL, NULL, ofp);

    for (i = 0; i < 4; ++i)
	free(plane[i]);
    return 0;
}

int
pksm_page(unsigned char *plane[4], int w, int h, FILE *ofp)
{
    BIE_CHAIN *chain[4];
    int i;
    unsigned char *bitmaps[4][1];
    struct jbg_enc_state se[4]; 

    RealWidth = w;
    if (Model == MODEL_HP1020
	|| Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP)
	w = (w + 127) & ~127;

    for (i = 0; i < 4; ++i)
	chain[i] = NULL;

    for (i = 0; i < 4; ++i)
    {
	Dots[i] = compute_image_dots(w, h, plane[i]);

	*bitmaps[i] = plane[i];

	jbg_enc_init(&se[i], w, h, 1, bitmaps[i], output_jbig, &chain[i]);
	jbg_enc_options(&se[i], JbgOptions[0], JbgOptions[1],
			JbgOptions[2], JbgOptions[3], JbgOptions[4]);
	jbg_enc_out(&se[i]);
	jbg_enc_free(&se[i]);
    }

    if (Color2Mono)
	write_page(&chain[Color2Mono-1], NULL, NULL, NULL, ofp);
    else if (AnyColor)
	write_page(&chain[0], &chain[1], &chain[2], &chain[3], ofp);
    else
	write_page(&chain[3], NULL, NULL, NULL, ofp);

    return 0;
}

int
pbm_page(unsigned char *buf, int w, int h, FILE *ofp)
{
    BIE_CHAIN		*chain = NULL;
    unsigned char	*bitmaps[1];
    struct jbg_enc_state se; 

    RealWidth = w;
    if (Model == MODEL_HP1020
	|| Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP)
	w = (w + 127) & ~127;

    if (SaveToner)
    {
	int	x, y;
	int	bpl, bpl16;

	bpl = (w + 7) / 8;
	if (Model == MODEL_2300DL)
	    bpl16 = bpl;
	else
	    bpl16 = (bpl + 15) & ~15;

	for (y = 0; y < h; y += 2)
	    for (x = 0; x < bpl16; ++x)
		buf[y*bpl16 + x] &= 0x55;
	for (y = 1; y < h; y += 2)
	    for (x = 0; x < bpl16; ++x)
		buf[y*bpl16 + x] &= 0xaa;
    }

    if (Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP)
    {
	int	x, y;
	int	bpl, bpl16;

	/*
	 * Blank initial lines for .25"
	 */
	bpl = (w + 7) / 8;
	bpl16 = (bpl + 15) & ~15;

	if (0)
	    for (y = 0; y < 150; ++y)
		memset(buf + y*bpl16, 0, bpl16);

	if (0)
	    for (y = 0; y < h; y += 1)
	    {
		for (x = 0; x < 32; ++x)
		    buf[y*bpl16 + x] = 0;
		for (x = bpl16 - 32; x < bpl16; ++x)
		    buf[y*bpl16 + x] = 0;
	    }
	if (0)
	    for (y = h - 200; y < h; y += 1)
		memset(buf + y*bpl16, 0, bpl16);
    }

    Dots[3] = compute_image_dots(w, h, buf);

    *bitmaps = buf;

    debug(9, "w x h = %d x %d\n", w, h);
    jbg_enc_init(&se, w, h, 1, bitmaps, output_jbig, &chain);
    jbg_enc_options(&se, JbgOptions[0], JbgOptions[1],
			JbgOptions[2], JbgOptions[3], JbgOptions[4]);
    jbg_enc_out(&se);
    jbg_enc_free(&se);

    write_page(&chain, NULL, NULL, NULL, ofp);

    return 0;
}

int
read_and_clip_image(unsigned char *buf,
			int rawBpl, int rightBpl, int pixelsPerByte,
			int bpl, int h, int bpl16, FILE *ifp)
{
    unsigned char	*rowbuf, *rowp;
    int			y;
    int			rc;

    rowbuf = malloc(rawBpl);
    if (!rowbuf)
	error(1, "Can't allocate row buffer\n");

    // Clip top rows
    if (UpperLeftY)
    {
	for (y = 0; y < UpperLeftY; ++y)
	{
	    rc = fread(rowbuf, rawBpl, 1, ifp);
	    if (rc == 0)
		goto eof;
	    if (rc != 1)
		error(1, "Premature EOF(1) on input at y=%d\n", y);
	}
    }

    // Copy the rows that we want to image
    rowp = buf;
    for (y = 0; y < h; ++y, rowp += bpl16)
    {
	// Clip left pixel *bytes*
	if (UpperLeftX)
	{
	    rc = fread(rowbuf, UpperLeftX / pixelsPerByte, 1, ifp);
	    if (rc == 0 && y == 0 && !UpperLeftY)
		goto eof;
	    if (rc != 1)
		error(1, "Premature EOF(2) on input at y=%d\n", y);
	}

	if (bpl != bpl16)
	    memset(rowp, 0, bpl16);
	rc = fread(rowp, bpl, 1, ifp);
	if (rc == 0 && y == 0 && !UpperLeftY && !UpperLeftX)
	    goto eof;
	if (rc != 1)
		error(1, "Premature EOF(3) on input at y=%d\n", y);

	// Clip right pixels
	if (rightBpl != bpl)
	{
	    rc = fread(rowbuf, rightBpl - bpl, 1, ifp);
	    if (rc != 1)
		error(1, "Premature EOF(4) on input at y=%d\n", y);
	}
    }

    // Clip bottom rows
    if (LowerRightY)
    {
	for (y = 0; y < LowerRightY; ++y)
	{
	    rc = fread(rowbuf, rawBpl, 1, ifp);
	    if (rc != 1)
		error(1, "Premature EOF(5) on input at y=%d\n", y);
	}
    }

    free(rowbuf);
    return (0);

eof:
    free(rowbuf);
    return (EOF);
}

int
cmyk_pages(FILE *ifp, FILE *ofp)
{
    unsigned char	*buf;
    int			rawW, rawH, rawBpl;
    int			rightBpl;
    int			w, h, bpl;
    int			rc;

    //
    // Save the original Upper Right clip values as the logical offset,
    // because we may adjust them slightly below, in the interest of speed.
    //
    if (LogicalClip & LOGICAL_CLIP_X)
	LogicalOffsetX = UpperLeftX;
    if (LogicalClip & LOGICAL_CLIP_Y)
	LogicalOffsetY = UpperLeftY;

    rawW = PageWidth;
    rawH = PageHeight;
    rawBpl = (PageWidth + 1) / 2;

    // We only clip multiples of 2 pixels off the leading edge, and
    // add any remainder to the amount we clip from the right edge.
    // Its fast, and good enough for government work.
    LowerRightX += UpperLeftX & 1;
    UpperLeftX &= ~1;

    w = rawW - UpperLeftX - LowerRightX;
    h = rawH - UpperLeftY - LowerRightY;
    bpl = (w + 1) / 2;
    rightBpl = (rawW - UpperLeftX + 1) / 2;

    buf = malloc(bpl * h);
    if (!buf)
	error(1, "Unable to allocate page buffer of %d x %d = %d bytes\n",
		rawW, rawH, rawBpl * rawH);

    for (;;)
    {
	rc = read_and_clip_image(buf, rawBpl, rightBpl, 2, bpl, h, bpl, ifp);
	if (rc == EOF)
	    goto done;

	++PageNum;
	if (Duplex == DMDUPLEX_LONGEDGE && even_page(PageNum))
	    rotate_bytes_180(buf, buf + bpl * h - 1, Mirror4);
	if (Duplex == DMDUPLEX_MANUALLONG && even_page(PageNum))
	    rotate_bytes_180(buf, buf + bpl * h - 1, Mirror4);

	if (even_page(PageNum) && EvenPages)
	{
	    SeekRec[SeekIndex].b = ftell(EvenPages);
	    cmyk_page(buf, w, h, EvenPages);
	    SeekRec[SeekIndex].e = ftell(EvenPages);
	    debug(1, "CMYK Page: %d	%ld	%ld\n",
		PageNum, SeekRec[SeekIndex].b, SeekRec[SeekIndex].e);
	    SeekIndex++;
	}
	else
	    cmyk_page(buf, w, h, ofp);
    }

done:
    free(buf);
    return 0;
}

static unsigned long
getint(FILE *fp)
{
    int c;
    unsigned long i = 0;
    int	rc;

    while ((c = getc(fp)) != EOF && !isdigit(c))
	if (c == '#')
	    while ((c = getc(fp)) != EOF && !(c == 13 || c == 10)) ;
    if (c != EOF)
    {
	ungetc(c, fp);
	rc = fscanf(fp, "%lu", &i);
	if (rc != 1) error(1, "fscanf: rc == 0!\n");
    }
    return i;
}

static void
skip_to_nl(FILE *fp)
{
    for (;;)
    {
	int c;
	c =  getc(fp);
	if (c == EOF)
	    error(1, "Premature EOF on input stream\n");
	if (c == '\n')
	    return;
    }
}

int
pbm_header(FILE *ifp, int *p4eatenp, int *wp, int *hp)
{
    int	c1, c2;

    if (*p4eatenp)
	*p4eatenp = 0;  // P4 already eaten in main
    else
    {
	c1 = getc(ifp);
	if (c1 == EOF)
	    return 0;
	c2 = getc(ifp);
	if (c1 != 'P' || c2 != '4')
	    error(1, "Not a pbmraw data stream\n");
    }

    skip_to_nl(ifp);

    *wp = getint(ifp);
    *hp = getint(ifp);
    skip_to_nl(ifp);
    return 1;
}

int
pksm_pages(FILE *ifp, FILE *ofp)
{
    unsigned char	*plane[4];
    int			rawW, rawH, rawBpl;
    int			saveW = 0, saveH = 0;
    int			rightBpl;
    int			w, h, bpl;
    int			bpl16;
    int			i;
    int			rc;
    int			p4eaten = 1;

    //
    // Save the original Upper Right clip values as the logical offset,
    // because we may adjust them slightly below, in the interest of speed.
    //
    if (LogicalClip & LOGICAL_CLIP_X)
	LogicalOffsetX = UpperLeftX;
    if (LogicalClip & LOGICAL_CLIP_Y)
	LogicalOffsetY = UpperLeftY;

    for (;;)
    {
	++PageNum;
	AnyColor = 0;

	for (i = 0; i < 4; ++i)
	{
	    if (pbm_header(ifp, &p4eaten, &rawW, &rawH) == 0)
	    {
		if (i == 0)
		    goto eof;
		else
		    error(1, "Premature EOF(pksm) on page %d hdr, plane %d\n",
			    PageNum, i);
	    }
	    if (i == 0)
	    {
		saveW = rawW;
		saveH = rawH;
	    }
	    if (saveW != rawW)
		error(1, "Image width changed from %d to %d on plane %d\n",
			saveW, rawW, i);
	    if (saveH != rawH)
		error(1, "Image height changed from %d to %d on plane %d\n",
			saveH, rawH, i);

	    rawBpl = (rawW + 7) / 8;

	    // We only clip multiples of 8 pixels off the leading edge, and
	    // add any remainder to the amount we clip from the right edge.
	    // Its fast, and good enough for government work.
	    LowerRightX += UpperLeftX & 7;
	    UpperLeftX &= ~7;

	    w = rawW - UpperLeftX - LowerRightX;
	    h = rawH - UpperLeftY - LowerRightY;
	    bpl = (w + 7) / 8;
	    rightBpl = (rawW - UpperLeftX + 7) / 8;

	    if (Model == MODEL_HP1020
		|| Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP)
		bpl16 = (bpl + 15) & ~15;
	    else
		bpl16 = bpl;
	    debug(1, "bpl=%d bpl16=%d\n", bpl, bpl16);

	    plane[i] = malloc(bpl16 * h);
	    if (!plane[i])
		error(1, "Can't allocate plane buffer\n");

	    rc = read_and_clip_image(plane[i],
				    rawBpl, rightBpl, 8, bpl, h, bpl16, ifp);
	    if (rc == EOF)
		error(1, "Premature EOF(pksm) on page %d data, plane %d\n",
			    PageNum, i);

	    if (Debug >= 9)
	    {
		FILE *dfp;
		char fname[256];
		sprintf(fname, "xxxplane%d", i);
		dfp = fopen(fname, "w");
		if (dfp)
		{
		    rc = fwrite(plane[i], bpl*h, 1, dfp);
		    fclose(dfp);
		}
	    }

	    // See if we can optimize this to be a monochrome page
	    if (!AnyColor && i != 3)
	    {
		unsigned char *p, *e;

		for (p = plane[i], e = p + bpl16*h; p < e; ++p)
		    if (*p)
		    {
			AnyColor |= 1<<i;
			break;
		    }
	    }

	    if (Duplex == DMDUPLEX_LONGEDGE && even_page(PageNum))
		rotate_bytes_180(plane[i], plane[i] + bpl * h - 1, Mirror1);
	    if (Duplex == DMDUPLEX_MANUALLONG && even_page(PageNum))
		rotate_bytes_180(plane[i], plane[i] + bpl * h - 1, Mirror1);
	}

	debug(2, "AnyColor = %s %s %s\n",
		    (AnyColor & 0x01) ? "Cyan" : "",
		    (AnyColor & 0x02) ? "Magenta" : "",
		    (AnyColor & 0x04) ? "Yellow" : ""
		    );

	if (even_page(PageNum) && EvenPages)
	{
	    SeekRec[SeekIndex].b = ftell(EvenPages);
	    pksm_page(plane, w, h, EvenPages);
	    SeekRec[SeekIndex].e = ftell(EvenPages);
	    debug(1, "PKSM Page: %d	%ld	%ld\n",
		PageNum, SeekRec[SeekIndex].b, SeekRec[SeekIndex].e);
	    SeekIndex++;
	}
	else
	    pksm_page(plane, w, h, ofp);

	for (i = 0; i < 4; ++i)
	    free(plane[i]);
    }
eof:
    return (0);
}

void
blank_page(FILE *ofp)
{
    int			w, h, bpl, bpl16 = 0;
    unsigned char	*plane;
    
    w = PageWidth - UpperLeftX - LowerRightX;
    h = PageHeight - UpperLeftY - LowerRightY;
    bpl = (w + 7) / 8;
    switch (Model)
    {
    case MODEL_2300DL:		bpl16 = bpl; break;
    case MODEL_HP1020:		bpl16 = (bpl + 15) & ~15; break;
    case MODEL_HP_PRO:		bpl16 = (bpl + 15) & ~15; break;
    case MODEL_HP_PRO_CP:	bpl16 = (bpl + 15) & ~15; break;
    default:			error(1, "Bad model %d\n", Model); break;
    }

    plane = malloc(bpl16 * h);
    if (!plane)
    error(1, "Unable to allocate blank plane (%d bytes)\n", bpl16*h);
    memset(plane, 0, bpl16*h);

    pbm_page(plane, w, h, ofp);
    ++PageNum;
    free(plane);
}

int
pbm_pages(FILE *ifp, FILE *ofp)
{
    unsigned char	*buf;
    int			rawW, rawH, rawBpl;
    int			rightBpl;
    int			w, h, bpl;
    int			bpl16 = 0;
    int			rc;
    int			p4eaten = 1;
    FILE		*tfp = NULL;
    long		tpos = 0;

    //
    // Save the original Upper Right clip values as the logical offset,
    // because we may adjust them slightly below, in the interest of speed.
    //
    if (LogicalClip & LOGICAL_CLIP_X)
	LogicalOffsetX = UpperLeftX;
    if (LogicalClip & LOGICAL_CLIP_Y)
	LogicalOffsetY = UpperLeftY;

    for (;;)
    {
	if (pbm_header(ifp, &p4eaten, &rawW, &rawH) == 0)
	    break;

	rawBpl = (rawW + 7) / 8;

	// We only clip multiples of 8 pixels off the leading edge, and
	// add any remainder to the amount we clip from the right edge.
	// Its fast, and good enough for government work.
	LowerRightX += UpperLeftX & 7;
	UpperLeftX &= ~7;

	w = rawW - UpperLeftX - LowerRightX;
	h = rawH - UpperLeftY - LowerRightY;
	bpl = (w + 7) / 8;
	rightBpl = (rawW - UpperLeftX + 7) / 8;

	switch (Model)
	{
	case MODEL_2300DL:	bpl16 = bpl; break;
	case MODEL_HP1020:	bpl16 = (bpl + 15) & ~15; break;
	case MODEL_HP_PRO:	bpl16 = (bpl + 15) & ~15; break;
	case MODEL_HP_PRO_CP:	bpl16 = (bpl + 15) & ~15; break;
	default:		error(1, "Bad model %d\n", Model); break;
	}

	buf = malloc(bpl16 * h);
	if (!buf)
	    error(1, "Can't allocate page buffer\n");

	rc = read_and_clip_image(buf, rawBpl, rightBpl, 8, bpl, h, bpl16, ifp);
	if (rc == EOF)
	    error(1, "Premature EOF(pbm) on input stream\n");

	++PageNum;
	if (Duplex == DMDUPLEX_LONGEDGE && even_page(PageNum))
	    rotate_bytes_180(buf, buf + bpl16 * h - 1, Mirror1);

	if (even_page(PageNum) && EvenPages)
	{
	    if (Duplex == DMDUPLEX_MANUALLONG)
		rotate_bytes_180(buf, buf + bpl16 * h - 1, Mirror1);
	    SeekRec[SeekIndex].b = ftell(EvenPages);
	    pbm_page(buf, w, h, EvenPages);
	    SeekRec[SeekIndex].e = ftell(EvenPages);
	    debug(1, "PBM Page: %d	%ld	%ld\n",
		PageNum, SeekRec[SeekIndex].b, SeekRec[SeekIndex].e);
	    SeekIndex++;
	}
	else if (Model == MODEL_HP_PRO
	    && (Duplex == DMDUPLEX_LONGEDGE || Duplex == DMDUPLEX_SHORTEDGE) )
	{
	    /*
	     * Duplex on P1606dn works like this:
	     *   P2(norm), P1(rot180), P4(norm), P3(rot180)
	     */
	    if (odd_page(PageNum))
	    {
		tfp = tmpfile();
		pbm_page(buf, w, h, tfp);
		fflush(tfp);
		tpos = ftell(tfp);
		rewind(tfp);
	    }
	    else
	    {
		pbm_page(buf, w, h, ofp);
		while (tpos--)
		    putc(getc(tfp), ofp);
		fclose(tfp);
	    }
	}
	else
	    pbm_page(buf, w, h, ofp);

	free(buf);
    }

    if (Model == MODEL_HP_PRO
	&& (Duplex == DMDUPLEX_LONGEDGE || Duplex == DMDUPLEX_SHORTEDGE)
	&& odd_page(PageNum) )
    {
	/*
	 * Duplex on P1606dn if there are an odd number of pages:
	 *   P2(blank), P1(rot180)
	 */
	blank_page(ofp);
	while (tpos--)
	    putc(getc(tfp), ofp);
	fclose(tfp);
    }

    return (0);
}

int
parse_xy(char *str, int *xp, int *yp)
{
    char	*p;

    if (!str || str[0] == 0) return -1;

    *xp = strtoul(str, &p, 10);
    if (str == p) return -2;
    while (*p && (*p < '0' || *p > '9'))
	++p;
    str = p;
    if (str[0] == 0) return -3;
    *yp = strtoul(str, &p, 10);
    if (str == p) return -4;
    return (0);
}

void
do_one(FILE *in)
{
    int	mode;

    if (Mode == MODE_COLOR)
    {
	mode = getc(in);
	if (mode != 'P')
	{
	    ungetc(mode, in);
	    cmyk_pages(in, stdout);
	}
	else
	{
	    mode = getc(in);
	    if (mode == '4')
		pksm_pages(in, stdout);
	    else
		error(1, "Not a pksmraw file!\n");
	}
    }
    else
    {
	mode = getc(in);
	if (mode != 'P')
	    error(1, "Not a pbm file!\n");
	mode = getc(in);
	if (mode == '4')
	    pbm_pages(in, stdout);
	else
	    error(1, "Not a pbmraw file!\n");
    }
}

int
main(int argc, char *argv[])
{
    int	c;
    int i, j;

    while ( (c = getopt(argc, argv,
		    "cd:g:n:m:p:r:s:tT:u:l:z:L:ABPJ:S:U:X:D:V?h")) != EOF)
	switch (c)
	{
	case 'c':	Mode = MODE_COLOR; break;
	case 'S':	Color2Mono = atoi(optarg);
			Mode = MODE_COLOR;
			if (Color2Mono < 0 || Color2Mono > 4)
			    error(1, "Illegal value '%s' for -C\n", optarg);
			break;
	case 'd':	Duplex = atoi(optarg); break;
	case 'g':	if (parse_xy(optarg, &PageWidth, &PageHeight))
			    error(1, "Illegal format '%s' for -g\n", optarg);
			if (PageWidth < 0 || PageWidth > 1000000)
			    error(1, "Illegal X value '%s' for -g\n", optarg);
			if (PageHeight < 0 || PageHeight > 1000000)
			    error(1, "Illegal Y value '%s' for -g\n", optarg);
			break;
	case 'm':	MediaCode = atoi(optarg); break;
	case 'n':	Copies = atoi(optarg); break;
	case 'p':	PaperCode = atoi(optarg); break;
	case 'r':	if (parse_xy(optarg, &ResX, &ResY))
			    error(1, "Illegal format '%s' for -r\n", optarg);
			break;
	case 's':	SourceCode = atoi(optarg); break;
	case 't':	SaveToner = 1; break;
	case 'T':       PrintDensity = atoi(optarg);
			if (PrintDensity < 1 || PrintDensity > 5)
			    error(1, "Illegal value '%s' for PrintDensity -T\n",
				 optarg);
			break;
	case 'u':
			if (strcmp(optarg, "0") == 0)
			    break;
			if (parse_xy(optarg, &UpperLeftX, &UpperLeftY))
			    error(1, "Illegal format '%s' for -u\n", optarg);
			break;
	case 'l':
			if (strcmp(optarg, "0") == 0)
			    break;
			if (parse_xy(optarg, &LowerRightX, &LowerRightY))
			    error(1, "Illegal format '%s' for -l\n", optarg);
			break;
	case 'z':	Model = atoi(optarg);
			if (Model < 0 || Model > MODEL_LAST)
			    error(1, "Illegal value '%s' for -z\n", optarg);
			break;
	case 'L':	LogicalClip = atoi(optarg);
			if (LogicalClip < 0 || LogicalClip > 3)
			    error(1, "Illegal value '%s' for -L\n", optarg);
			break;
	case 'A':	AllIsBlack = !AllIsBlack; break;
	case 'B':	BlackClears = !BlackClears; break;
	case 'P':	OutputStartPlane = !OutputStartPlane; break;
	case 'J':	if (optarg[0]) Filename = optarg; break;
	case 'U':	if (optarg[0]) Username = optarg; break;
	case 'X':	ExtraPad = atoi(optarg); break;
	case 'D':	Debug = atoi(optarg); break;
	case 'V':	printf("%s\n", Version); exit(0);
	default:	usage(); exit(1);
	}

    if (UpperLeftX < 0 || UpperLeftX >= PageWidth)
	error(1, "Illegal X value '%d' for -u\n", UpperLeftX);
    if (UpperLeftY < 0 || UpperLeftY >= PageHeight)
	error(1, "Illegal Y value '%d' for -u\n", UpperLeftY);
    if (LowerRightX < 0 || LowerRightX >= PageWidth)
	error(1, "Illegal X value '%d' for -l\n", LowerRightX);
    if (LowerRightY < 0 || LowerRightY >= PageHeight)
	error(1, "Illegal Y value '%d' for -l\n", LowerRightY);

    argc -= optind;
    argv += optind;

    if (getenv("DEVICE_URI"))
	IsCUPS = 1;

    if (Model == MODEL_HP1020
	|| Model == MODEL_HP_PRO
	|| Model == MODEL_HP_PRO_CP)
    {
	Bpp = ResX / 600;
	ResX = 600;
	if (SaveToner)
	{
	    SaveToner = 0;
	    EconoMode = 1;
	}
    }

    if (Model == MODEL_HP_PRO || Model == MODEL_HP_PRO_CP)
	JbgOptions[3] = 0;	/* MX = 0 */

    switch (Duplex)
    {
    case DMDUPLEX_MANUALLONG:
    case DMDUPLEX_MANUALSHORT:
	EvenPages = tmpfile();
	break;
    }

    start_doc(stdout);

    if (argc == 0)
    {
	do_one(stdin);
    }
    else
    {
	for (i = 0; i < argc; ++i)
	{
	    FILE	*ifp;

	    ifp = fopen(argv[i], "r");
	    if (!ifp)
		error(1, "Can't open '%s' for reading\n", argv[i]);
	    do_one(ifp);
	    fclose(ifp);
	}
    }

    /*
     *	Do manual duplex
     */
    if (EvenPages)
    {
	DWORD	media;
	int	rc;

	// Handle odd page count
	if (odd_page(PageNum))
	{
	    SeekRec[SeekIndex].b = ftell(EvenPages);
	    blank_page(EvenPages);
	    SeekRec[SeekIndex].e = ftell(EvenPages);
	    debug(1, "Blank Page: %d	%ld	%ld\n",
		PageNum, SeekRec[SeekIndex].b, SeekRec[SeekIndex].e);
	    SeekIndex++;
	}

	/*
	 *  Manual Pause
	 */
	if (Model == MODEL_HP1020
		|| Model == MODEL_HP_PRO
		|| Model == MODEL_HP_PRO_CP)
	    load_tray2(stdout);

	fseek(EvenPages, SeekMedia, 0L);
	media = be32(DMMEDIA_LETTERHEAD);
	rc = fwrite(&media, 1, sizeof(DWORD), EvenPages);
	if (rc == 0) error(1, "fwrite(10): rc == 0!\n");

	// Write even pages in reverse order
	for (i = SeekIndex-1; i >= 0; --i)
	{
	    debug(1, "EvenPage: %d	%ld	%ld\n",
	    i, SeekRec[i].b, SeekRec[i].e);
	    fseek(EvenPages, SeekRec[i].b, 0L);
	    for (j = 0; j < (SeekRec[i].e - SeekRec[i].b); ++j)
		putc(getc(EvenPages), stdout);
	}
	fclose(EvenPages);
    }

    end_doc(stdout);

    exit(0);
}