diff options
Diffstat (limited to 'converter/pbm/pbmtoescp2.c')
-rw-r--r-- | converter/pbm/pbmtoescp2.c | 260 |
1 files changed, 157 insertions, 103 deletions
diff --git a/converter/pbm/pbmtoescp2.c b/converter/pbm/pbmtoescp2.c index 7dc6653d..6f284f3c 100644 --- a/converter/pbm/pbmtoescp2.c +++ b/converter/pbm/pbmtoescp2.c @@ -1,4 +1,4 @@ -/* pbmtoescp2.c - read a portable bitmap and produce Epson ESC/P2 raster + /* 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) @@ -10,45 +10,65 @@ ** 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 */ -/* I used the Epson ESC/P Reference Manual (1997) in writing this. */ - #include <string.h> #include "pm_c_util.h" -#include "pbm.h" +#include "mallocvar.h" #include "shhopt.h" +#include "runlength.h" +#include "pbm.h" + + static char const esc = 033; -struct cmdlineInfo { +struct CmdlineInfo { const char * inputFileName; unsigned int resolution; unsigned int compress; + unsigned int stripeHeight; + bool raw; + bool formfeed; }; static void -parseCommandLine(int argc, char ** argv, - struct cmdlineInfo *cmdlineP) { +parseCommandLine(int argc, const char ** argv, + struct CmdlineInfo *cmdlineP) { optStruct3 opt; unsigned int option_def_index = 0; - optEntry *option_def = malloc(100*sizeof(optEntry)); + optEntry * option_def = malloc(100*sizeof(optEntry)); - unsigned int compressSpec, resolutionSpec; + 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); + &compressSpec, 0); OPTENT3(0, "resolution", OPT_UINT, &cmdlineP->resolution, - &resolutionSpec, 0); + &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, argv, opt, sizeof(opt), 0); + pm_optParseOptions3(&argc, (char **)argv, opt, sizeof(opt), 0); if (argc-1 > 1) pm_error("Too many arguments: %d. " @@ -62,79 +82,81 @@ parseCommandLine(int argc, char ** argv, cmdlineP->compress = 1; if (resolutionSpec) { - if (cmdlineP->resolution != 360 && cmdlineP->resolution != 180) + if (cmdlineP->resolution != 720 && cmdlineP->resolution != 360 && + cmdlineP->resolution != 180) pm_error("Invalid -resolution value: %u. " - "Only 180 and 360 are valid.", cmdlineP->resolution); + "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 unsigned int -enc_epson_rle(unsigned int const l, - const unsigned char * const src, - unsigned char * const dest) { -/*---------------------------------------------------------------------------- - compress l data bytes from src to dest and return the compressed - length ------------------------------------------------------------------------------*/ - unsigned int i; /* index */ - unsigned int state; /* run state */ - unsigned int pos; /* source position */ - unsigned int dpos; /* destination position */ - - pos = dpos = state = 0; - while ( pos < l ) - { - for (i=0; i<128 && pos+i<l; i++) - /* search for begin of a run, smallest useful run is 3 - equal bytes - */ - if(src[pos+i]==src[pos+i+1] && src[pos+i]==src[pos+i+2]) - { - state=1; /* set run state */ - break; - } - if(i) - { - /* set counter byte for copy through */ - dest[dpos] = i-1; - /* copy data bytes before run begin or end cond. */ - memcpy(dest+dpos+1,src+pos,i); - pos+=i; dpos+=i+1; /* update positions */ - } - if (state) - { - for (i=0; src[pos+i]==src[pos+i+1] && i<128 && pos+i<l; i++); - /* found the runlength i */ - dest[dpos] = 257-i; /* set counter for byte repetition */ - dest[dpos+1] = src[pos]; /* set byte to be repeated */ - pos+=i; dpos+=2; state=0; /* update positions, reset run state */ - } - } - return dpos; +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, char* argv[]) { +main(int argc, const char * argv[]) { - FILE* ifP; + FILE * ifP; int rows, cols; int format; - unsigned int row, idx, len; - unsigned int h, v; - unsigned char *bytes, *cprbytes; - struct cmdlineInfo cmdline; + 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; - pbm_init(&argc, argv); + pm_proginit(&argc, argv); parseCommandLine(argc, argv, &cmdline); @@ -142,51 +164,83 @@ main(int argc, char* argv[]) { pbm_readpbminit(ifP, &cols, &rows, &format); - bytes = malloc(24*pbm_packed_bytes(cols)+2); - cprbytes = malloc(2*24*pbm_packed_bytes(cols)); - if (bytes == NULL || cprbytes == NULL) - pm_error("Cannot allocate memory"); + if (cols / 256 > 127) /* Limit in official Epson manual */ + pm_error("Image width is too large"); - h = v = 3600/cmdline.resolution; + outColByteCt = pbm_packed_bytes(cols); + stripeByteCt = cmdline.stripeHeight * outColByteCt; - /* Set raster graphic mode. */ - printf("%c%c%c%c%c%c", esc, '(', 'G', 1, 0, 1); + MALLOCARRAY(inBuff, stripeByteCt); + if (inBuff == NULL) + pm_error("Out of memory trying to create input buffer of %u bytes", + stripeByteCt); - /* Set line spacing in units of 1/360 inches. */ - printf("%c%c%c", esc, '+', 24*h/10); - - /* Write out raster stripes 24 rows high. */ - for (row = 0; row < rows; row += 24) { - unsigned int const linesThisStripe = (rows-row<24) ? rows%24 : 24; - printf("%c%c%c%c%c%c%c%c", esc, '.', cmdline.compress, - v, h, linesThisStripe, - cols%256, cols/256); - /* Read pbm rows, each padded to full byte */ - for (idx = 0; idx < 24 && row+idx < rows; ++idx) - pbm_readpbmrow_packed(ifP,bytes+idx*pbm_packed_bytes(cols), - cols,format); - /* Add delimiter to end of rows, using inverse of final - data byte to prevent match. */ - *(bytes+idx*pbm_packed_bytes(cols)) = - ~ *(bytes+idx*pbm_packed_bytes(cols)-1); - - /* Write raster data. */ - if (cmdline.compress != 0) { - /* compressed */ - len = enc_epson_rle(linesThisStripe * pbm_packed_bytes(cols), - bytes, cprbytes); - fwrite(cprbytes,len,1,stdout); - } else - /* uncompressed */ - fwrite(bytes, pbm_packed_bytes(cols), linesThisStripe, stdout); - - if (rows-row >= 24) putchar('\n'); + 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(bytes); free(cprbytes); + + free(inBuff); + free(compressedData); pm_close(ifP); - /* Reset printer. */ - printf("%c%c", esc, '@'); + /* Form feed */ + if (cmdline.formfeed) + putchar('\f'); + + if (!cmdline.raw) { + /* Reset printer. a*/ + printf("%c%c", esc, '@'); + } return 0; } |