/*
* -------------------------------------------------------------
*
* (C) 2002 Jochen Karrer, Linuxdata GbR
*
* convert a pnm to PCL-XL image
*
* -------------------------------------------------------------
*/
/* Engineering note: One PCL-XL printer prints an error message like
this when it doesn't like the PCL it sees:
PCL XL error
Subsystem: IMAGE
Error: IllegalAttributeValue
Operator: ReadImage
Position: 8
"Position" is the sequence number of the PCL operator it was trying
to execute.
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <ctype.h>
#include "pm_c_util.h"
#include "pam.h"
#include "shhopt.h"
#include "mallocvar.h"
#include "nstring.h"
#include "pclxl.h"
#define PAPERWIDTH(format) (xlPaperFormats[format].width)
#define PAPERHEIGHT(format) (xlPaperFormats[format].height)
typedef struct InputSource {
const char * name;
struct InputSource * next;
} InputSource;
struct cmdlineInfo {
/* All the information the user supplied in the command line,
in a form easy for the program to use.
*/
InputSource * sourceP;
unsigned int dpi;
enum MediaSize format;
unsigned int feederSpec;
int feeder;
unsigned int outtraySpec;
int outtray;
unsigned int duplexSpec;
enum DuplexPageMode duplex;
unsigned int copiesSpec;
int copies;
unsigned int center;
float xoffs;
float yoffs;
unsigned int colorok;
unsigned int verbose;
const char * jobsetup; /* -jobsetup option value. NULL if none */
unsigned int rendergray;
unsigned int embedded;
};
static void
parseCommandLine(int argc, char ** argv,
struct cmdlineInfo * const cmdlineP) {
/*----------------------------------------------------------------------------
parse program command line described in Unix standard form by argc
and argv. Return the information in the options as *cmdlineP.
If command line is internally inconsistent (invalid options, etc.),
issue error message to stderr and abort program.
Note that the strings we return are stored in the storage that
was passed to us as the argv array. We also trash *argv.
-----------------------------------------------------------------------------*/
optEntry *option_def = malloc( 100*sizeof( optEntry ) );
/* Instructions to pm_optParseOptions3 on how to parse our options.
*/
optStruct3 opt;
unsigned int option_def_index;
char *formatOpt;
char *duplexOpt;
unsigned int dpiSpec, xoffsSpec, yoffsSpec, formatSpec, jobsetupSpec;
option_def_index = 0; /* incremented by OPTENT3 */
OPTENT3(0, "dpi", OPT_UINT, &cmdlineP->dpi,
&dpiSpec, 0);
OPTENT3(0, "xoffs", OPT_FLOAT, &cmdlineP->xoffs,
&xoffsSpec, 0);
OPTENT3(0, "yoffs", OPT_FLOAT, &cmdlineP->yoffs,
&yoffsSpec, 0);
OPTENT3(0, "format", OPT_STRING, &formatOpt,
&formatSpec, 0);
OPTENT3(0, "duplex", OPT_STRING, &duplexOpt,
&cmdlineP->duplexSpec, 0);
OPTENT3(0, "copies", OPT_UINT, &cmdlineP->copies,
&cmdlineP->copiesSpec, 0);
OPTENT3(0, "colorok", OPT_FLAG, NULL,
&cmdlineP->colorok, 0);
OPTENT3(0, "center", OPT_FLAG, NULL,
&cmdlineP->center, 0 );
OPTENT3(0, "feeder", OPT_UINT, &cmdlineP->feeder,
&cmdlineP->feederSpec, 0);
OPTENT3(0, "outtray", OPT_UINT, &cmdlineP->outtray,
&cmdlineP->outtraySpec, 0);
OPTENT3(0, "verbose", OPT_FLAG, NULL,
&cmdlineP->verbose, 0);
OPTENT3(0, "jobsetup", OPT_STRING, &cmdlineP->jobsetup,
&jobsetupSpec, 0);
OPTENT3(0, "rendergray", OPT_FLAG, NULL,
&cmdlineP->rendergray, 0 );
OPTENT3(0, "embedded", OPT_FLAG, NULL,
&cmdlineP->embedded, 0 );
opt.opt_table = option_def;
opt.short_allowed = FALSE; /* We have no short (old-fashioned) options */
opt.allowNegNum = FALSE; /* We have no parms that are negative numbers */
pm_optParseOptions3( &argc, argv, opt, sizeof(opt), 0);
/* Uses and sets argc, argv, and some of *cmdlineP and others. */
if (!dpiSpec)
cmdlineP->dpi = 300;
if (!xoffsSpec)
cmdlineP->xoffs = 0.0;
if (!yoffsSpec)
cmdlineP->yoffs = 0.0;
if (cmdlineP->duplexSpec) {
if (strncmp(duplexOpt, "vertical", strlen(duplexOpt)) == 0)
cmdlineP->duplex = eDuplexVerticalBinding;
else if (strncmp(duplexOpt, "horizontal", strlen(duplexOpt)) == 0)
cmdlineP->duplex = eDuplexHorizontalBinding;
else
pm_error("Invalid value '%s' for -duplex option", duplexOpt);
}
if (formatSpec) {
bool found;
int i;
for (i = 0, found=FALSE; xlPaperFormats[i].name && !found; ++i) {
if (streq(xlPaperFormats[i].name, formatOpt)) {
found = TRUE;
cmdlineP->format = xlPaperFormats[i].xl_nr;
}
}
if (!found) {
int i;
pm_message("Valid -format values:");
for (i = 0; xlPaperFormats[i].name; ++i) {
if (xlPaperFormats[i].width > 0)
pm_message(" %s", xlPaperFormats[i].name);
}
pm_error("Invalid -format option '%s' specified.", formatOpt);
}
} else
cmdlineP->format = eLetterPaper;
if (!jobsetupSpec)
cmdlineP->jobsetup = NULL;
if (cmdlineP->embedded) {
if (xoffsSpec || yoffsSpec || formatSpec || cmdlineP->duplexSpec
|| cmdlineP->copiesSpec || dpiSpec || cmdlineP->center
|| cmdlineP->feederSpec || cmdlineP->outtraySpec
|| jobsetupSpec || cmdlineP->rendergray)
pm_error("With -embedded, you may not specify "
"-xoffs, -yoffs, -format, -duplex, copies, -dpi, "
"-center, -feeder, -outtray, -jobsetup, or -rendergray");
if (argc-1 > 1)
pm_message("With -embedded, you may not specify more than one "
"input image. You specified %u", argc-1);
}
if (argc-1 < 1) {
MALLOCVAR(cmdlineP->sourceP);
cmdlineP->sourceP->name = "-";
cmdlineP->sourceP->next = NULL;
} else {
unsigned int i;
InputSource ** nextLinkP;
nextLinkP = &cmdlineP->sourceP;
for (i = 1; i < argc; ++i) {
InputSource * sourceP;
MALLOCVAR(sourceP);
sourceP->name = argv[i];
*nextLinkP = sourceP;
nextLinkP = &sourceP->next;
*nextLinkP = NULL;
}
}
}
static void
freeSource(InputSource * const firstSourceP) {
InputSource * sourceP;
sourceP = firstSourceP;
while(sourceP) {
InputSource * const nextP = sourceP->next;
free(sourceP);
sourceP = nextP;
}
}
static void
freeCmdline(struct cmdlineInfo const cmdline) {
freeSource(cmdline.sourceP);
}
#define XY_RLE_FBUFSIZE (1024)
typedef struct XY_rle {
int error;
unsigned char buf[128];
int bpos;
int state;
unsigned char * fbuf;
int fbpos;
int fbufsize;
int fd;
} XY_rle;
static void
XY_RLEreset(XY_rle * const rleP) {
rleP->state = eSTART;
rleP->bpos = 0;
rleP->fbpos = 0;
rleP->error = 0;
}
static XY_rle *
XY_RLEnew(size_t const size) {
XY_rle * retval;
XY_rle * rleP;
MALLOCVAR(rleP);
if (rleP) {
rleP->fbuf = malloc(size);
if (rleP->fbuf) {
rleP->fbufsize = MAX(1024, size);
retval = rleP;
} else
retval = NULL;
if (retval == NULL)
free(rleP);
} else
retval = NULL;
return retval;
}
static void
XY_RLEdelete(XY_rle * const rleP) {
free(rleP->fbuf);
free(rleP);
}
static int
out(XY_rle * const rleP,
int const count) {
bool error;
if (rleP->state == eRLE) {
rleP->fbuf[rleP->fbpos++] = -count + 1;
rleP->fbuf[rleP->fbpos++] = rleP->buf[0];
} else if (rleP->bpos > 0) {
rleP->fbuf[rleP->fbpos++] = count - 1;
memcpy(rleP->fbuf + rleP->fbpos, rleP->buf, count);
rleP->fbpos += count;
}
if (rleP->fbpos + 129 > rleP->fbufsize) {
rleP->fbufsize *= 1.2;
rleP->fbuf = realloc(rleP->fbuf, rleP->fbufsize);
if (rleP->fbuf == NULL) {
rleP->error = -1;
rleP->fbpos = 0;
error = true;
} else
error = false;
} else
error = false;
rleP->bpos = 0;
rleP->state = eSTART;
return error ? -1 : 0;
}
static int
XY_RLEfinish (XY_rle *rle) {
out(rle,rle->bpos);
if(rle->error<0)
return rle->error;
else
return rle->fbpos;
}
static void
rle_putbyte(XY_rle * const rleP,
unsigned char const u) {
switch (rleP->state) {
case eRLE:
if (u != rleP->buf[0])
out(rleP, rleP->bpos);
break;
case eLIT:
if (u == rleP->buf[rleP->bpos - 1]
&& u == rleP->buf[rleP->bpos - 2]) {
out(rleP,rleP->bpos - 2);
rleP->buf[0] = u;
rleP->bpos += 2;
rleP->state = eRLE;
}
break;
case eSTART:
if (rleP->bpos == 1) {
if (u == rleP->buf[rleP->bpos - 1])
rleP->state = eRLE;
else
rleP->state = eLIT;
}
break;
}
rleP->buf[rleP->bpos++] = u;
if (rleP->bpos == 128) {
out(rleP, rleP->bpos);
}
}
static void
XY_RLEput(XY_rle *rle,const unsigned char buf[],int count)
{
int i;
for(i=0;i<count;i++) {
rle_putbyte(rle,buf[i]);
}
}
static int
XY_Write(int const fd,
const void * const buf,
int const cnt) {
int len;
bool error;
for (len =0, error = false; len < cnt && !error;) {
ssize_t const rc = write(fd, (char*)buf + len , cnt - len);
if (rc <= 0)
error = true;
else
len += rc;
}
return error ? -1 : len;
}
#define XY_Puts(fd, str) XY_Write(fd, str, strlen(str))
typedef struct pclGenerator {
enum ColorDepth colorDepth;
enum Colorspace colorSpace;
int width,height;
int linelen; /* bytes per line */
unsigned char *data;
void (*getnextrow)(const struct pclGenerator *, struct pam *);
} pclGenerator;
static void
pnmToPcllinePackbits(const pclGenerator * const pclGeneratorP,
struct pam * const pamP) {
tuple * tuplerow;
unsigned int pcl_cursor;
unsigned char accum;
unsigned char bitmask;
unsigned int col;
tuplerow = pnm_allocpamrow(pamP);
pnm_readpamrow(pamP, tuplerow);
pcl_cursor = 0; bitmask = 0x80; accum = 0x00;
for (col = 0; col < pamP->width; ++col) {
if (tuplerow[col][0] == PAM_PBM_WHITE)
accum |= bitmask;
bitmask >>= 1;
if (bitmask == 0) {
pclGeneratorP->data[pcl_cursor++] = accum;
bitmask = 0x80; accum = 0x0;
}
}
if (bitmask != 0x80)
pclGeneratorP->data[pcl_cursor++] = accum;
pnm_freepamrow(tuplerow);
}
static void
createPclGeneratorPackbits(struct pam * const pamP,
pclGenerator ** const pclGeneratorPP) {
/* Samples are black or white and packed 8 to a byte */
pclGenerator * pclGeneratorP;
MALLOCVAR_NOFAIL(pclGeneratorP);
pclGeneratorP->colorDepth = e1Bit;
pclGeneratorP->colorSpace = eGray;
pclGeneratorP->linelen = (pamP->width+7)/8;
pclGeneratorP->height = pamP->height;
pclGeneratorP->width = (pamP->width);
pclGeneratorP->data = malloc(pclGeneratorP->linelen);
if (pclGeneratorP->data == NULL)
pm_error("Unable to allocate row buffer.");
pclGeneratorP->getnextrow = pnmToPcllinePackbits;
*pclGeneratorPP = pclGeneratorP;
}
static void
pnmToPcllineWholebytes(const pclGenerator * const pclGeneratorP,
struct pam * const pamP) {
tuple * tuplerow;
unsigned int pcl_cursor;
unsigned int col;
tuplerow = pnm_allocpamrow(pamP);
pnm_readpamrow(pamP, tuplerow);
pcl_cursor = 0; /* initial value */
for (col = 0; col < pamP->width; ++col) {
unsigned int plane;
for (plane = 0; plane < pamP->depth; ++plane) {
pclGeneratorP->data[pcl_cursor++] =
pnm_scalesample(tuplerow[col][plane], pamP->maxval, 255);
}
}
pnm_freepamrow(tuplerow);
}
static void
createPclGeneratorWholebytes(struct pam * const pamP,
pclGenerator ** const pclGenPP) {
/* One sample per byte */
pclGenerator * pclGenP;
MALLOCVAR_NOFAIL(pclGenP);
if (pamP->depth < 3)
pclGenP->colorSpace = eGray;
else
pclGenP->colorSpace = eRGB;
pclGenP->colorDepth = e8Bit;
pclGenP->height = pamP->height;
pclGenP->width = pamP->width;
pclGenP->linelen = pamP->width * pamP->depth;
if (UINT_MAX / pamP->width < pamP->depth)
pm_error("Image to big to process");
else
pclGenP->data = malloc(pamP->width * pamP->depth);
if (pclGenP->data == NULL)
pm_error("Unable to allocate row buffer.");
pclGenP->getnextrow = pnmToPcllineWholebytes;
*pclGenPP = pclGenP;
}
static void
destroyPclGenerator(pclGenerator * const pclGenP) {
free(pclGenP->data);
free(pclGenP);
}
static void
createPclGenerator(struct pam * const pamP,
pclGenerator ** const pclGeneratorPP,
bool const colorok) {
if (pamP->depth > 1 && !colorok)
pm_message("WARNING: generating a color print stream because the "
"input image is PPM. "
"To generate a black and white print stream, run the input "
"through Ppmtopgm. To suppress this warning, use the "
"-colorok option.");
if (pamP->depth == 1 && pamP->maxval == 1)
createPclGeneratorPackbits(pamP, pclGeneratorPP);
else
createPclGeneratorWholebytes(pamP, pclGeneratorPP);
}
struct tPrinter {
const char *name;
float topmargin;
float bottommargin;
float leftmargin;
float rightmargin;
} xlPrinters[] = {
{ "lj2200",0,0,0,0 }
};
static int
out_ubyte(int const fd,
unsigned char const data) {
return XY_Write(fd, &data, 1);
}
static int
XL_Operator(int const fd,
enum Operator const data) {
return out_ubyte(fd, data);
}
static int
out_uint16(int const fd,
unsigned short const data ) {
unsigned char c[2];
c[0] = data & 0xff;
c[1] = data >>8;
return XY_Write(fd, c , ARRAY_SIZE(c));
}
static int
out_uint32(int fd,unsigned int data ) {
unsigned char c[4];
c[0] = data&0xff; c[1]=(data>>8)&0xff; c[2]=(data>>16)&0xff; c[3]=data>>24;
return XY_Write(fd,c,4);
}
static int
out_sint16(int const fd,
signed short const sdata ) {
unsigned short const data= (unsigned short)sdata;
unsigned char c[2];
c[0] = data & 0xff;
c[1] = data >> 8;
return XY_Write(fd, c, ARRAY_SIZE(c));
}
static int
xl_ubyte(int const fd,
unsigned char const data) {
unsigned char const tag = 0xc0;
XY_Write(fd, &tag, 1);
return out_ubyte(fd, data);
}
static int
xl_uint16(int const fd,
unsigned short const data) {
unsigned char const tag = 0xc1;
XY_Write(fd, &tag, 1);
return out_uint16(fd, data);
}
static int
xl_ubyte_array(int const fd,
const unsigned char * const data,
int const len) {
unsigned int i;
unsigned char head[4];
head[0] = 0xc8;
head[1] = 0xc1;
head[2] = len & 0xff;
head[3] = (len >> 8) & 0xff;
XY_Write(fd, head, ARRAY_SIZE(head));
for (i = 0; i < len; ++i)
out_ubyte(fd, data[i]);
return 0;
}
static int
xl_uint16_xy(int const fd,
unsigned short const xdata,
unsigned short const ydata ) {
unsigned char const tag = 0xd1;
XY_Write(fd, &tag, 1);
out_uint16(fd, xdata);
return out_uint16(fd, ydata);
}
static int
xl_sint16_xy(int const fd,
signed short const xdata,
signed short const ydata ) {
unsigned char const tag = 0xd3;
XY_Write(fd, &tag, 1);
out_sint16(fd, xdata);
return out_sint16(fd, ydata);
}
static int
xl_attr_ubyte(int const fd,
enum Attribute const data) {
unsigned char const tag = 0xf8;
XY_Write(fd, &tag, 1);
return out_ubyte(fd, data);
}
static int
xl_dataLength(int const fd,
unsigned int const dataLength ) {
unsigned char const tag = 0xfa;
XY_Write(fd, &tag, 1);
return out_uint32(fd, dataLength);
}
static void
openDataSource(int const outFd,
enum DataOrg const dataOrg,
enum DataSource const dataSource) {
xl_ubyte(outFd, dataOrg); xl_attr_ubyte(outFd, aDataOrg);
xl_ubyte(outFd, dataSource); xl_attr_ubyte(outFd, aSourceType);
XL_Operator(outFd, oOpenDataSource);
}
static void
closeDataSource(int const outFd) {
XL_Operator(outFd, oCloseDataSource);
}
static void
convertAndWriteRleBlock(int const outFd,
const pclGenerator * const pclGeneratorP,
struct pam * const pamP,
int const firstLine,
int const nlines,
XY_rle * const rle) {
unsigned char const pad[4] = {0,0,0,0};
unsigned int const paddedLinelen = ((pclGeneratorP->linelen+3)/4)*4;
int rlelen;
unsigned int line;
XY_RLEreset(rle);
for (line = firstLine; line < firstLine + nlines; ++line) {
pclGeneratorP->getnextrow(pclGeneratorP, pamP);
XY_RLEput(rle, pclGeneratorP->data, pclGeneratorP->linelen);
XY_RLEput(rle, pad, paddedLinelen - pclGeneratorP->linelen);
}
rlelen = XY_RLEfinish(rle);
if (rlelen<0)
pm_error("Error on Making rle");
xl_dataLength(outFd, rlelen);
XY_Write(outFd, rle->fbuf, rlelen);
}
/*
* ------------------------------------------------------------
* XL_WriteImage
* Write a PCL-XL image to the datastream
* ------------------------------------------------------------
*/
static void
convertAndWriteImage(int const outFd,
const pclGenerator * const pclGenP,
struct pam * const pamP) {
int blockStartLine;
XY_rle * rle;
xl_ubyte(outFd, eDirectPixel); xl_attr_ubyte(outFd, aColorMapping);
xl_ubyte(outFd, pclGenP->colorDepth); xl_attr_ubyte(outFd, aColorDepth);
xl_uint16(outFd, pclGenP->width); xl_attr_ubyte(outFd, aSourceWidth);
xl_uint16(outFd, pclGenP->height); xl_attr_ubyte(outFd, aSourceHeight);
xl_uint16_xy(outFd, pclGenP->width*1, pclGenP->height*1);
xl_attr_ubyte(outFd, aDestinationSize);
XL_Operator(outFd, oBeginImage);
rle = XY_RLEnew(pclGenP->linelen*20);
if (!rle)
pm_error("Unable to allocate %d bytes for the RLE buffer",
pclGenP->linelen * 20);
blockStartLine = 0;
while (blockStartLine < pclGenP->height) {
unsigned int const blockHeight =
MIN(20, pclGenP->height-blockStartLine);
xl_uint16(outFd, blockStartLine); xl_attr_ubyte(outFd, aStartLine);
xl_uint16(outFd, blockHeight); xl_attr_ubyte(outFd, aBlockHeight);
xl_ubyte(outFd, eRLECompression); xl_attr_ubyte(outFd, aCompressMode);
/* In modern PCL-XL, we could use a PadBytesMultiple attribute
here to avoid having to pad the data to a multiple of 4
bytes. But PCL-XL 1.1 didn't have PadBytesMultiple.
xl_ubyte(outFd, 1); xl_attr_ubyte(outFd, aPadBytesMultiple);
*/
XL_Operator(outFd, oReadImage);
convertAndWriteRleBlock(outFd, pclGenP, pamP,
blockStartLine, blockHeight, rle);
blockStartLine += blockHeight;
}
XY_RLEdelete(rle);
XL_Operator(outFd, oEndImage);
}
static void
printEmbeddedImage(int const outFd,
const InputSource * const sourceP,
bool const colorok) {
FILE * ifP;
struct pam pam;
pclGenerator * pclGeneratorP;
openDataSource(outFd, eBinaryLowByteFirst, eDefaultSource);
ifP = pm_openr(sourceP->name);
pnm_readpaminit(ifP, &pam, PAM_STRUCT_SIZE(tuple_type));
createPclGenerator(&pam, &pclGeneratorP, colorok);
convertAndWriteImage(outFd, pclGeneratorP, &pam);
destroyPclGenerator(pclGeneratorP);
pm_close(ifP);
closeDataSource(outFd);
}
static void
copyFile(const char * const sourceFileName,
int const destFd) {
FILE * sourceFileP;
sourceFileP = pm_openr(sourceFileName);
while (!feof(sourceFileP)) {
char buffer[1024];
size_t bytesRead;
size_t totalBytesWritten;
bytesRead = fread(buffer, 1, sizeof(buffer), sourceFileP);
if (ferror(sourceFileP))
pm_error("Read from file failed. errno=%d (%s)",
errno, strerror(errno));
totalBytesWritten = 0;
while (totalBytesWritten < bytesRead) {
ssize_t rc;
rc = write(destFd, buffer, bytesRead);
if (rc < 0)
pm_error("Write to file failed. errno=%d (%s)",
errno, strerror(errno));
else
totalBytesWritten += rc;
}
}
pm_close(sourceFileP);
}
static void
jobHead(int const outFd,
bool const renderGray,
const char * const userJobSetupFileName) {
/*----------------------------------------------------------------------------
Start a PJL job.
Switch printer to PCL-XL mode. This is called "entering a printer
language" in PCL terms. In particular, we enter the PCL-XL language,
as opposed to e.g. Postscript.
-----------------------------------------------------------------------------*/
/* Reset */
XY_Puts(outFd,"\033%-12345X");
if (userJobSetupFileName)
copyFile(userJobSetupFileName, outFd);
if (renderGray)
XY_Puts(outFd, "@PJL SET RENDERMODE=GRAYSCALE\n");
XY_Puts(outFd, "@PJL ENTER LANGUAGE=PCLXL\n");
XY_Puts(outFd, ") HP-PCL XL;1;1;Generated by Netpbm Pnmtopclxl\n");
}
static void
jobEnd(int const outFd) {
/*----------------------------------------------------------------------------
End a PJL job.
Reset printer to quiescent mode. Exit the printer language.
-----------------------------------------------------------------------------*/
XY_Puts(outFd,"\033%-12345X");
}
static void
beginPage(int const outFd,
bool const doDuplex,
enum DuplexPageMode const duplex,
bool const doMediaSource,
int const mediaSource,
bool const doMediaDestination,
int const mediaDestination,
enum MediaSize const format) {
/*----------------------------------------------------------------------------
Emit a BeginPage printer command.
-----------------------------------------------------------------------------*/
if (doDuplex) {
xl_ubyte(outFd, duplex); xl_attr_ubyte(outFd, aDuplexPageMode);
}
if (doMediaSource) {
/* if not included same as last time in same session is selected */
xl_ubyte(outFd, mediaSource); xl_attr_ubyte(outFd, aMediaSource);
}
if (doMediaDestination) {
xl_ubyte(outFd, mediaDestination);
xl_attr_ubyte(outFd, aMediaDestination);
}
xl_ubyte(outFd, ePortraitOrientation); xl_attr_ubyte(outFd, aOrientation);
xl_ubyte(outFd, format); xl_attr_ubyte(outFd, aMediaSize);
XL_Operator(outFd, oBeginPage);
}
static void
setColorSpace(int const outFd,
enum Colorspace const colorSpace,
const unsigned char * const palette,
unsigned int const paletteSize,
enum ColorDepth const paletteDepth) {
/*----------------------------------------------------------------------------
Emit printer control to set the color space.
'palette' == NULL means no palette (raster contains colors, not indexes
into a palette).
'paletteSize' is the number of bytes in the palette (undefined if
'palette' is NULL)
'paletteDepth' is the color depth of the entries in the palette.
e8Bit means the palette contains 8 bit values.
The palette is a "direct color" palette: A separate table for each
color component (i.e. one table for grayscale; three tables for
RGB). Each table is indexed by a value from the raster and yields
a byte of color component value.
The palette has to be the right size to fit the number of color
components and raster color depth (bits per component in the raster).
E.g. with raster color depth of 1 bit (e1Bit) and RGB color (eRGB),
'paletteSize' would have to be 6 -- a table for each of R, G, and
B, of two elements each.
It is not clear from the documentation what the situation is when
paletteDepth is not e8Bit. Is each palette entry still a byte and only
some of the byte gets used? Or are there multiple entries per byte?
-----------------------------------------------------------------------------*/
xl_ubyte(outFd, colorSpace); xl_attr_ubyte(outFd, aColorSpace);
if (palette) {
xl_ubyte(outFd, paletteDepth);
xl_attr_ubyte(outFd, aPaletteDepth);
xl_ubyte_array(outFd, palette, paletteSize);
xl_attr_ubyte(outFd, aPaletteData);
}
XL_Operator(outFd, oSetColorSpace);
}
static void
positionCursor(int const outFd,
bool const center,
float const xoffs,
float const yoffs,
int const imageWidth,
int const imageHeight,
unsigned int const dpi,
enum MediaSize const format) {
/*----------------------------------------------------------------------------
Emit printer control to position the cursor to start the page.
-----------------------------------------------------------------------------*/
float xpos, ypos;
if (center) {
float const width = 1.0 * imageWidth/dpi;
float const height = 1.0 * imageHeight/dpi;
xpos = (PAPERWIDTH(format) - width)/2;
ypos = (PAPERHEIGHT(format) - height)/2;
} else {
xpos = xoffs;
ypos = yoffs;
}
/* cursor positioning */
xl_sint16_xy(outFd, xpos * dpi, ypos * dpi); xl_attr_ubyte(outFd, aPoint);
XL_Operator(outFd, oSetCursor);
}
static void
endPage(int const outFd,
bool const doCopies,
unsigned int const copies) {
/*----------------------------------------------------------------------------
Emit an EndPage printer command.
-----------------------------------------------------------------------------*/
if (doCopies) {
/* wrong in example in PCL-XL manual. Type is uint16 ! */
xl_uint16(outFd, copies); xl_attr_ubyte(outFd, aPageCopies);
}
XL_Operator(outFd, oEndPage);
}
static void
convertAndPrintPage(int const outFd,
const pclGenerator * const pclGeneratorP,
struct pam * const pamP,
enum MediaSize const format,
unsigned int const dpi,
bool const center,
float const xoffs,
float const yoffs,
bool const doDuplex,
enum DuplexPageMode const duplex,
bool const doCopies,
unsigned int const copies,
bool const doMediaSource,
int const mediaSource,
bool const doMediaDestination,
int const mediaDestination) {
beginPage(outFd, doDuplex, duplex, doMediaSource, mediaSource,
doMediaDestination, mediaDestination, format);
/* Before Netpbm 10.27 (March 2005), we always set up a two-byte 8
bit deep palette: {0, 255}. I don't know why, because this
works only for e1Bit color depth an eGray color space, and in
that case does the same thing as having no palette at all. But
in other cases, it doesn't work. E.g. with eRGB, e8Bit, we got
an IllegalArraySize error from the printer on the SetColorSpace
command.
So we don't use a palette at all now.
*/
setColorSpace(outFd, pclGeneratorP->colorSpace, NULL, 0, 0);
positionCursor(outFd, center, xoffs, yoffs,
pclGeneratorP->width, pclGeneratorP->height, dpi, format);
convertAndWriteImage(outFd, pclGeneratorP, pamP);
endPage(outFd, doCopies, copies);
}
static void
beginSession(int const outFd,
unsigned int const xdpi,
unsigned int const ydpi,
enum Measure const measure,
bool const noReporting,
enum ErrorReport const errorReport) {
xl_uint16_xy(outFd, xdpi, ydpi); xl_attr_ubyte(outFd, aUnitsPerMeasure);
xl_ubyte(outFd, measure); xl_attr_ubyte(outFd, aMeasure);
/* xl_ubyte(outFd,eNoReporting); xl_attr_ubyte(outFd,aErrorReport); */
xl_ubyte(outFd,errorReport); xl_attr_ubyte(outFd,aErrorReport);
XL_Operator(outFd,oBeginSession);
}
static void
endSession(int outFd) {
XL_Operator(outFd,oEndSession);
}
static void
printPages(int const outFd,
InputSource * const firstSourceP,
enum MediaSize const format,
unsigned int const dpi,
bool const center,
float const xoffs,
float const yoffs,
bool const doDuplex,
enum DuplexPageMode const duplex,
bool const doCopies,
unsigned int const copies,
bool const doMediaSource,
int const mediaSource,
bool const doMediaDestination,
int const mediaDestination,
bool const colorok) {
/*----------------------------------------------------------------------------
Loop over all input files, and each file, all images.
-----------------------------------------------------------------------------*/
InputSource * sourceP;
unsigned int sourceNum;
sourceP = firstSourceP;
openDataSource(outFd, eBinaryLowByteFirst, eDefaultSource);
sourceNum = 0; /* initial value */
while (sourceP) {
FILE * ifP;
struct pam pam;
bool eof;
unsigned int pageNum;
ifP = pm_openr(sourceP->name);
++sourceNum;
pageNum = 0; /* initial value */
eof = FALSE;
while(!eof) {
pnm_nextimage(ifP, &eof);
if (!eof) {
pclGenerator * pclGeneratorP;
++pageNum;
pm_message("Processing File %u, Page %u", sourceNum, pageNum);
pnm_readpaminit(ifP, &pam, PAM_STRUCT_SIZE(tuple_type));
createPclGenerator(&pam, &pclGeneratorP, colorok);
convertAndPrintPage(
outFd, pclGeneratorP, &pam,
format, dpi, center, xoffs, yoffs, doDuplex, duplex,
doCopies, copies, doMediaSource, mediaSource,
doMediaDestination, mediaDestination);
destroyPclGenerator(pclGeneratorP);
}
}
pm_close(ifP);
sourceP = sourceP->next;
}
closeDataSource(outFd);
}
int
main(int argc, char *argv[]) {
int const outFd = STDOUT_FILENO;
struct cmdlineInfo cmdline;
/* In case you're wondering why we do direct file descriptor I/O
instead of stream (FILE *), it's because Jochen originally
wrote this code for an embedded system with diet-libc. Without
the stream library, the statically linked binary was only about
5K big.
*/
pnm_init(&argc, argv);
parseCommandLine(argc, argv, &cmdline);
if (cmdline.embedded)
printEmbeddedImage(outFd, cmdline.sourceP, cmdline.colorok);
else {
jobHead(outFd, cmdline.rendergray, cmdline.jobsetup);
beginSession(outFd, cmdline.dpi, cmdline.dpi, eInch,
FALSE, eBackChAndErrPage);
printPages(outFd, cmdline.sourceP,
cmdline.format, cmdline.dpi, cmdline.center,
cmdline.xoffs, cmdline.yoffs,
cmdline.duplexSpec, cmdline.duplex,
cmdline.copiesSpec, cmdline.copies,
cmdline.feederSpec, cmdline.feeder,
cmdline.outtraySpec, cmdline.outtray,
cmdline.colorok
);
endSession(outFd);
jobEnd(outFd);
}
freeCmdline(cmdline);
return 0;
}