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/* pbmtoescp2.c - read a portable bitmap and produce Epson ESC/P2 raster
** graphics output data for Epson Stylus printers
**
** Copyright (C) 2003 by Ulrich Walcher (u.walcher@gmx.de)
** and Jef Poskanzer.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation. This software is provided "as is" without express or
** implied warranty.
**
** Major changes were made in July 2015 by Akira Urushibata.
** Added 720 DPI capability.
** Added -formfeed, -raw and -stripeheight.
** Replaced Packbits run length encoding function. (Use library function.)
*
* ESC/P Reference Manual (1997)
* ftp://download.epson-europe.com/pub/download/182/epson18162eu.zip
*/
#include <string.h>
#include "pm_c_util.h"
#include "mallocvar.h"
#include "shhopt.h"
#include "runlength.h"
#include "pbm.h"
static char const esc = 033;
struct CmdlineInfo {
const char * inputFileName;
unsigned int resolution;
unsigned int compress;
unsigned int stripeHeight;
bool raw;
bool formfeed;
};
static void
parseCommandLine(int argc, const char ** argv,
struct CmdlineInfo *cmdlineP) {
optStruct3 opt;
unsigned int option_def_index = 0;
optEntry * option_def = malloc(100*sizeof(optEntry));
unsigned int compressSpec, resolutionSpec, stripeHeightSpec,
rawSpec, formfeedSpec;
opt.opt_table = option_def;
opt.short_allowed = FALSE;
opt.allowNegNum = FALSE;
OPTENT3(0, "compress", OPT_UINT, &cmdlineP->compress,
&compressSpec, 0);
OPTENT3(0, "resolution", OPT_UINT, &cmdlineP->resolution,
&resolutionSpec, 0);
OPTENT3(0, "stripeheight", OPT_UINT, &cmdlineP->stripeHeight,
&stripeHeightSpec, 0);
OPTENT3(0, "raw", OPT_FLAG, NULL,
&rawSpec, 0);
OPTENT3(0, "formfeed", OPT_FLAG, NULL,
&formfeedSpec, 0);
pm_optParseOptions3(&argc, (char **)argv, opt, sizeof(opt), 0);
if (argc-1 > 1)
pm_error("Too many arguments: %d. "
"Only argument is the filename", argc-1);
if (compressSpec) {
if (cmdlineP->compress != 0 && cmdlineP->compress != 1)
pm_error("Invalid -compress value: %u. Only 0 and 1 are valid.",
cmdlineP->compress);
} else
cmdlineP->compress = 1;
if (resolutionSpec) {
if (cmdlineP->resolution != 720 && cmdlineP->resolution != 360 &&
cmdlineP->resolution != 180)
pm_error("Invalid -resolution value: %u. "
"Only 180, 360 and 720 are valid.", cmdlineP->resolution);
} else
cmdlineP->resolution = 360;
if (stripeHeightSpec) {
if (cmdlineP->stripeHeight == 0 ||
cmdlineP->stripeHeight > 255)
pm_error("Invalid -stripeheight value: %u. "
"Should be 24, 8, or 1, and must be in the range 1-255",
cmdlineP->stripeHeight);
else if (cmdlineP->stripeHeight != 24 &&
cmdlineP->stripeHeight != 8 &&
cmdlineP->stripeHeight != 1)
pm_message("Proceeding with irregular -stripeheight value: %u. "
"Should be 24, 8, or 1.", cmdlineP->stripeHeight);
else if (cmdlineP->resolution == 720 &&
cmdlineP->stripeHeight != 1)
/* The official Epson manual mandates single-row stripes for
720 dpi high-resolution images.
*/
pm_message("Proceeding with irregular -stripeheight value: %u. "
"Because resolution i 720dpi, should be 1.",
cmdlineP->stripeHeight);
} else
cmdlineP->stripeHeight = cmdlineP->resolution == 720 ? 1 : 24;
if (rawSpec && formfeedSpec)
pm_error("You cannot specify both -raw and -formfeed");
else {
cmdlineP->raw = rawSpec ? true : false ;
cmdlineP->formfeed = formfeedSpec ? true : false ;
}
if (argc-1 == 1)
cmdlineP->inputFileName = argv[1];
else
cmdlineP->inputFileName = "-";
free(option_def);
}
static void
writeSetup(unsigned int const hres) {
/* Set raster graphic mode. */
printf("%c%c%c%c%c%c", esc, '(', 'G', 1, 0, 1);
/* Set line spacing in units of 1/360 inches. */
printf("%c%c%c", esc, '+', 24 * hres / 10);
}
int
main(int argc, const char * argv[]) {
FILE * ifP;
int rows, cols;
int format;
unsigned int row;
unsigned int idx;
unsigned int outColByteCt;
unsigned int stripeByteCt;
unsigned int hres, vres;
unsigned char * inBuff;
unsigned char * bitrow[256];
unsigned char * compressedData;
struct CmdlineInfo cmdline;
pm_proginit(&argc, argv);
parseCommandLine(argc, argv, &cmdline);
ifP = pm_openr(cmdline.inputFileName);
pbm_readpbminit(ifP, &cols, &rows, &format);
if (cols / 256 > 127) /* Limit in official Epson manual */
pm_error("Image width is too large");
outColByteCt = pbm_packed_bytes(cols);
stripeByteCt = cmdline.stripeHeight * outColByteCt;
MALLOCARRAY(inBuff, stripeByteCt);
if (inBuff == NULL)
pm_error("Out of memory trying to create input buffer of %u bytes",
stripeByteCt);
if (cmdline.compress != 0)
pm_rlenc_allocoutbuf(&compressedData, stripeByteCt, PM_RLE_PACKBITS);
else
compressedData = NULL;
for (idx = 0; idx <= cmdline.stripeHeight; ++idx)
bitrow[idx]= &inBuff[idx * outColByteCt];
hres = vres = 3600 / cmdline.resolution;
/* Possible values for hres, vres: 20, 10, 5 */
if (!cmdline.raw)
writeSetup(hres);
/* Write out raster stripes */
for (row = 0; row < rows; row += cmdline.stripeHeight ) {
unsigned int const rowsThisStripe =
MIN(rows - row, cmdline.stripeHeight);
unsigned int const outCols = outColByteCt * 8;
if (rowsThisStripe > 0) {
unsigned int idx;
printf("%c%c%c%c%c%c%c%c", esc, '.', cmdline.compress, vres, hres,
cmdline.stripeHeight, outCols % 256, outCols / 256);
/* Read pbm rows, each padded to full byte */
for (idx = 0; idx < rowsThisStripe; ++idx) {
pbm_readpbmrow_packed (ifP, bitrow[idx], cols, format);
pbm_cleanrowend_packed(bitrow[idx], cols);
}
/* If at bottom pad with empty rows up to stripe height */
if (rowsThisStripe < cmdline.stripeHeight )
memset(bitrow[rowsThisStripe], 0,
(cmdline.stripeHeight - rowsThisStripe) * outColByteCt);
/* Write raster data */
if (cmdline.compress != 0) { /* compressed */
size_t compressedDataCt;
pm_rlenc_compressbyte(inBuff, compressedData, PM_RLE_PACKBITS,
stripeByteCt, &compressedDataCt);
fwrite(compressedData, compressedDataCt, 1, stdout);
} else /* uncompressed */
fwrite(inBuff, stripeByteCt, 1, stdout);
/* Emit newline to print the stripe */
putchar('\n');
}
}
free(inBuff);
free(compressedData);
pm_close(ifP);
/* Form feed */
if (cmdline.formfeed)
putchar('\f');
if (!cmdline.raw) {
/* Reset printer. a*/
printf("%c%c", esc, '@');
}
return 0;
}
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