/* pcx.c - Handles output to ZSoft PCX file */ /* libzint - the open source barcode library Copyright (C) 2009-2022 Robin Stuart Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the project nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* SPDX-License-Identifier: BSD-3-Clause */ #include #include #include #ifdef _MSC_VER #include #include #endif #include "common.h" #include "output.h" #include "pcx.h" /* PCX header structure */ /* ZSoft PCX File Format Technical Reference Manual http://bespin.org/~qz/pc-gpe/pcx.txt */ INTERNAL int pcx_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf) { int fgred, fggrn, fgblu, bgred, bggrn, bgblu; int row, column, i, colour; int run_count; FILE *pcx_file; pcx_header_t header; int bytes_per_line = symbol->bitmap_width + (symbol->bitmap_width & 1); /* Must be even */ unsigned char previous; const int output_to_stdout = symbol->output_options & BARCODE_STDOUT; /* Suppress gcc -fanalyzer warning */ unsigned char *rle_row = (unsigned char *) z_alloca(bytes_per_line); rle_row[bytes_per_line - 1] = 0; /* Will remain zero if bitmap_width odd */ fgred = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]); fggrn = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]); fgblu = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]); bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]); bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]); bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]); header.manufacturer = 10; /* ZSoft */ header.version = 5; /* Version 3.0 */ header.encoding = 1; /* Run length encoding */ header.bits_per_pixel = 8; header.window_xmin = 0; header.window_ymin = 0; header.window_xmax = symbol->bitmap_width - 1; header.window_ymax = symbol->bitmap_height - 1; header.horiz_dpi = symbol->dpmm ? (uint16_t) roundf(stripf(symbol->dpmm * 25.4f)) : 300; header.vert_dpi = header.horiz_dpi; for (i = 0; i < 48; i++) { header.colourmap[i] = 0x00; } header.reserved = 0; header.number_of_planes = 3; header.bytes_per_line = bytes_per_line; header.palette_info = 1; /* Colour */ header.horiz_screen_size = 0; header.vert_screen_size = 0; for (i = 0; i < 54; i++) { header.filler[i] = 0x00; } /* Open output file in binary mode */ if (output_to_stdout) { #ifdef _MSC_VER if (-1 == _setmode(_fileno(stdout), _O_BINARY)) { sprintf(symbol->errtxt, "620: Could not set stdout to binary (%d: %.30s)", errno, strerror(errno)); return ZINT_ERROR_FILE_ACCESS; } #endif pcx_file = stdout; } else { if (!(pcx_file = out_fopen(symbol->outfile, "wb"))) { sprintf(symbol->errtxt, "621: Could not open output file (%d: %.30s)", errno, strerror(errno)); return ZINT_ERROR_FILE_ACCESS; } } fwrite(&header, sizeof(pcx_header_t), 1, pcx_file); for (row = 0; row < symbol->bitmap_height; row++) { for (colour = 0; colour < 3; colour++) { for (column = 0; column < symbol->bitmap_width; column++) { switch (colour) { case 0: switch (pixelbuf[(row * symbol->bitmap_width) + column]) { case 'W': /* White */ case 'M': /* Magenta */ case 'R': /* Red */ case 'Y': /* Yellow */ rle_row[column] = 255; break; case 'C': /* Cyan */ case 'B': /* Blue */ case 'G': /* Green */ case 'K': /* Black */ rle_row[column] = 0; break; case '1': rle_row[column] = fgred; break; default: rle_row[column] = bgred; break; } break; case 1: switch (pixelbuf[(row * symbol->bitmap_width) + column]) { case 'W': /* White */ case 'C': /* Cyan */ case 'Y': /* Yellow */ case 'G': /* Green */ rle_row[column] = 255; break; case 'B': /* Blue */ case 'M': /* Magenta */ case 'R': /* Red */ case 'K': /* Black */ rle_row[column] = 0; break; case '1': rle_row[column] = fggrn; break; default: rle_row[column] = bggrn; break; } break; case 2: switch (pixelbuf[(row * symbol->bitmap_width) + column]) { case 'W': /* White */ case 'C': /* Cyan */ case 'B': /* Blue */ case 'M': /* Magenta */ rle_row[column] = 255; break; case 'R': /* Red */ case 'Y': /* Yellow */ case 'G': /* Green */ case 'K': /* Black */ rle_row[column] = 0; break; case '1': rle_row[column] = fgblu; break; default: rle_row[column] = bgblu; break; } break; } } /* Based on ImageMagick/coders/pcx.c PCXWritePixels() * Copyright 1999-2020 ImageMagick Studio LLC */ previous = rle_row[0]; run_count = 1; for (column = 1; column < bytes_per_line; column++) { /* Note going up to bytes_per_line */ if ((previous == rle_row[column]) && (run_count < 63)) { run_count++; } else { if (run_count > 1 || (previous & 0xc0) == 0xc0) { run_count += 0xc0; fputc(run_count, pcx_file); } fputc(previous, pcx_file); previous = rle_row[column]; run_count = 1; } } if (run_count > 1 || (previous & 0xc0) == 0xc0) { run_count += 0xc0; fputc(run_count, pcx_file); } fputc(previous, pcx_file); } } if (output_to_stdout) { fflush(pcx_file); } else { fclose(pcx_file); } return 0; } /* vim: set ts=4 sw=4 et : */