/* pcx.c - Handles output to ZSoft PCX file */ /* ZSoft PCX File Format Technical Reference Manual http://bespin.org/~qz/pc-gpe/pcx.txt */ /* libzint - the open source barcode library Copyright (C) 2009 - 2020 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. */ /* vim: set ts=4 sw=4 et : */ #include #include #include "common.h" #include "pcx.h" /* PCX header structure */ #include #ifdef _MSC_VER #include #include #include #endif INTERNAL int pcx_pixel_plot(struct zint_symbol *symbol, 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; #ifdef _MSC_VER unsigned char* rle_row; #endif #ifndef _MSC_VER unsigned char rle_row[bytes_per_line]; #else rle_row = (unsigned char *) _alloca(bytes_per_line); #endif /* _MSC_VER */ 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 = 300; header.vert_dpi = 300; 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 (symbol->output_options & BARCODE_STDOUT) { #ifdef _MSC_VER if (-1 == _setmode(_fileno(stdout), _O_BINARY)) { strcpy(symbol->errtxt, "620: Can't open output file"); return ZINT_ERROR_FILE_ACCESS; } #endif pcx_file = stdout; } else { if (!(pcx_file = fopen(symbol->outfile, "wb"))) { strcpy(symbol->errtxt, "621: Can't open output file"); 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); } } fclose(pcx_file); return 0; }