/* Copyright (C) 2000 artofcode LLC. All rights reserved. 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., 59 Temple Place, Suite 330, Boston, MA, 02111-1307. */ /*$Id: gdevdljm.c,v 1.4.8.1 2003/01/17 00:49:00 giles Exp $ */ /* Generic monochrome H-P DeskJet/LaserJet driver */ #include "gdevprn.h" #include "gdevdljm.h" /* * Thanks for various improvements to: * Jim Mayer (mayer@wrc.xerox.com) * Jan-Mark Wams (jms@cs.vu.nl) * Frans van Hoesel (hoesel@chem.rug.nl) * George Cameron (g.cameron@biomed.abdn.ac.uk) * Nick Duffek (nsd@bbc.com) * Thanks for the FS-600 driver to: * Peter Schildmann (peter.schildmann@etechnik.uni-rostock.de) * Thanks for the LJIIID duplex capability to: * PDP (Philip) Brown (phil@3soft-uk.com) * Thanks for the OCE 9050 driver to: * William Bader (wbader@EECS.Lehigh.Edu) * Thanks for the LJ4D duplex capability to: * Les Johnson */ /* See gdevdljm.h for the definitions of the PCL_ features. */ /* The number of blank lines that make it worthwhile to reposition */ /* the cursor. */ #define MIN_SKIP_LINES 7 /* We round up the LINE_SIZE to a multiple of a ulong for faster scanning. */ #define W sizeof(word) /* Send a page to the printer. */ int dljet_mono_print_page(gx_device_printer * pdev, FILE * prn_stream, int dots_per_inch, int features, const char *page_init) { return dljet_mono_print_page_copies(pdev, prn_stream, 1, dots_per_inch, features, page_init); } int dljet_mono_print_page_copies(gx_device_printer * pdev, FILE * prn_stream, int num_copies, int dots_per_inch, int features, const char *page_init) { int line_size = gdev_mem_bytes_per_scan_line((gx_device *) pdev); int line_size_words = (line_size + W - 1) / W; uint storage_size_words = line_size_words * 8; /* data, out_row, out_row_alt, prev_row */ word *storage; word *data_words, *out_row_words, *out_row_alt_words, *prev_row_words; #define data ((byte *)data_words) #define out_row ((byte *)out_row_words) #define out_row_alt ((byte *)out_row_alt_words) #define prev_row ((byte *)prev_row_words) byte *out_data; int x_dpi = pdev->x_pixels_per_inch; int y_dpi = pdev->y_pixels_per_inch; int y_dots_per_pixel = dots_per_inch / y_dpi; int num_rows = dev_print_scan_lines(pdev); int out_count; int compression = -1; static const char *const from2to3 = "\033*b3M"; static const char *const from3to2 = "\033*b2M"; int penalty_from2to3 = strlen(from2to3); int penalty_from3to2 = strlen(from3to2); int paper_size = gdev_pcl_paper_size((gx_device *) pdev); int code = 0; bool dup = pdev->Duplex; bool dupset = pdev->Duplex_set >= 0; if (num_copies != 1 && !(features & PCL_CAN_PRINT_COPIES)) return gx_default_print_page_copies(pdev, prn_stream, num_copies); storage = (ulong *)gs_alloc_byte_array(pdev->memory, storage_size_words, W, "hpjet_print_page"); if (storage == 0) /* can't allocate working area */ return_error(gs_error_VMerror); data_words = storage; out_row_words = data_words + (line_size_words * 2); out_row_alt_words = out_row_words + (line_size_words * 2); prev_row_words = out_row_alt_words + (line_size_words * 2); /* Clear temp storage */ memset(data, 0, storage_size_words * W); /* Initialize printer. */ if (pdev->PageCount == 0) { fputs("\033E", prn_stream); /* reset printer */ /* If the printer supports it, set the paper size */ /* based on the actual requested size. */ if (features & PCL_CAN_SET_PAPER_SIZE) { fprintf(prn_stream, "\033&l%dA", paper_size); } /* If printer can duplex, set duplex mode appropriately. */ if (features & PCL_HAS_DUPLEX) { if (dupset && dup) fputs("\033&l1S", prn_stream); else if (dupset && !dup) fputs("\033&l0S", prn_stream); else /* default to duplex for this printer */ fputs("\033&l1S", prn_stream); } } /* Put out per-page initialization. */ fputs("\033&l0o0l0E", prn_stream); fputs(page_init, prn_stream); fprintf(prn_stream, "\033&l%dX", num_copies); /* # of copies */ /* End raster graphics, position cursor at top. */ fputs("\033*rB\033*p0x0Y", prn_stream); /* The DeskJet and DeskJet Plus reset everything upon */ /* receiving \033*rB, so we must reinitialize graphics mode. */ if (features & PCL_END_GRAPHICS_DOES_RESET) { fputs(page_init, prn_stream); fprintf(prn_stream, "\033&l%dX", num_copies); /* # of copies */ } /* Set resolution. */ fprintf(prn_stream, "\033*t%dR", x_dpi); /* Send each scan line in turn */ { int lnum; int num_blank_lines = 0; word rmask = ~(word) 0 << (-pdev->width & (W * 8 - 1)); /* Transfer raster graphics. */ for (lnum = 0; lnum < num_rows; lnum++) { register word *end_data = data_words + line_size_words; code = gdev_prn_copy_scan_lines(pdev, lnum, (byte *) data, line_size); if (code < 0) break; /* Mask off 1-bits beyond the line width. */ end_data[-1] &= rmask; /* Remove trailing 0s. */ while (end_data > data_words && end_data[-1] == 0) end_data--; if (end_data == data_words) { /* Blank line */ num_blank_lines++; continue; } /* We've reached a non-blank line. */ /* Put out a spacing command if necessary. */ if (num_blank_lines == lnum) { /* We're at the top of a page. */ if (features & PCL_ANY_SPACING) { if (num_blank_lines > 0) fprintf(prn_stream, "\033*p+%dY", num_blank_lines * y_dots_per_pixel); /* Start raster graphics. */ fputs("\033*r1A", prn_stream); } else if (features & PCL_MODE_3_COMPRESSION) { /* Start raster graphics. */ fputs("\033*r1A", prn_stream); #if 1 /* don't waste paper */ if (num_blank_lines > 0) fputs("\033*b0W", prn_stream); num_blank_lines = 0; #else for (; num_blank_lines; num_blank_lines--) fputs("\033*b0W", prn_stream); #endif } else { /* Start raster graphics. */ fputs("\033*r1A", prn_stream); for (; num_blank_lines; num_blank_lines--) fputs("\033*bW", prn_stream); } } /* Skip blank lines if any */ else if (num_blank_lines != 0) { /* * Moving down from current position causes head motion * on the DeskJet, so if the number of lines is small, * we're better off printing blanks. */ /* * For Canon LBP4i and some others, *bY doesn't * properly clear the seed row if we are in compression mode * 3. */ if ((num_blank_lines < MIN_SKIP_LINES && compression != 3) || !(features & PCL_ANY_SPACING) ) { bool mode_3ns = (features & PCL_MODE_3_COMPRESSION) && !(features & PCL_ANY_SPACING); if (mode_3ns && compression != 2) { /* Switch to mode 2 */ fputs(from3to2, prn_stream); compression = 2; } if (features & PCL_MODE_3_COMPRESSION) { /* Must clear the seed row. */ fputs("\033*b1Y", prn_stream); num_blank_lines--; } if (mode_3ns) { for (; num_blank_lines; num_blank_lines--) fputs("\033*b0W", prn_stream); } else { for (; num_blank_lines; num_blank_lines--) fputs("\033*bW", prn_stream); } } else if (features & PCL3_SPACING) { fprintf(prn_stream, "\033*p+%dY", num_blank_lines * y_dots_per_pixel); } else { fprintf(prn_stream, "\033*b%dY", num_blank_lines); } /* Clear the seed row (only matters for */ /* mode 3 compression). */ memset(prev_row, 0, line_size); } num_blank_lines = 0; /* Choose the best compression mode */ /* for this particular line. */ if (features & PCL_MODE_3_COMPRESSION) { /* Compression modes 2 and 3 are both */ /* available. Try both and see which one */ /* produces the least output data. */ int count3 = gdev_pcl_mode3compress(line_size, data, prev_row, out_row); int count2 = gdev_pcl_mode2compress(data_words, end_data, out_row_alt); int penalty3 = (compression == 3 ? 0 : penalty_from2to3); int penalty2 = (compression == 2 ? 0 : penalty_from3to2); if (count3 + penalty3 < count2 + penalty2) { if (compression != 3) fputs(from2to3, prn_stream); compression = 3; out_data = out_row; out_count = count3; } else { if (compression != 2) fputs(from3to2, prn_stream); compression = 2; out_data = out_row_alt; out_count = count2; } } else if (features & PCL_MODE_2_COMPRESSION) { out_data = out_row; out_count = gdev_pcl_mode2compress(data_words, end_data, out_row); } else { out_data = data; out_count = (byte *) end_data - data; } /* Transfer the data */ fprintf(prn_stream, "\033*b%dW", out_count); fwrite(out_data, sizeof(byte), out_count, prn_stream); } } /* end raster graphics and eject page */ fputs("\033*rB\f", prn_stream); /* free temporary storage */ gs_free_object(pdev->memory, storage, "hpjet_print_page"); return code; }