| 1 | //======================================================================== |
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| 2 | // |
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| 3 | // NetPBMWriter.h |
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| 4 | // |
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| 5 | // Copyright 1998-2003 Glyph & Cog, LLC |
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| 6 | // |
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| 7 | //======================================================================== |
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| 8 | // |
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| 9 | //======================================================================== |
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| 10 | // |
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| 11 | // Modified under the Poppler project - http://poppler.freedesktop.org |
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| 12 | // |
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| 13 | // All changes made under the Poppler project to this file are licensed |
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| 14 | // under GPL version 2 or later |
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| 15 | // |
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| 16 | // Copyright (C) 2005, 2007, 2011, 2022 Albert Astals Cid <aacid@kde.org> |
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| 17 | // Copyright (C) 2006 Rainer Keller <class321@gmx.de> |
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| 18 | // Copyright (C) 2008 Timothy Lee <timothy.lee@siriushk.com> |
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| 19 | // Copyright (C) 2008 Vasile Gaburici <gaburici@cs.umd.edu> |
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| 20 | // Copyright (C) 2009 Carlos Garcia Campos <carlosgc@gnome.org> |
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| 21 | // Copyright (C) 2009 William Bader <williambader@hotmail.com> |
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| 22 | // Copyright (C) 2010 Jakob Voss <jakob.voss@gbv.de> |
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| 23 | // Copyright (C) 2012, 2013 Adrian Johnson <ajohnson@redneon.com> |
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| 24 | // Copyright (C) 2013 Thomas Fischer <fischer@unix-ag.uni-kl.de> |
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| 25 | // |
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| 26 | // To see a description of the changes please see the Changelog file that |
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| 27 | // came with your tarball or type make ChangeLog if you are building from git |
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| 28 | // |
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| 29 | //======================================================================== |
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| 30 | |
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| 31 | #include "poppler-config.h" |
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| 32 | |
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| 33 | #include "NetPBMWriter.h" |
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| 34 | |
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| 35 | // Writer for the NetPBM formats (PBM and PPM) |
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| 36 | // This format is documented at: |
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| 37 | // http://netpbm.sourceforge.net/doc/pbm.html |
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| 38 | // http://netpbm.sourceforge.net/doc/ppm.html |
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| 39 | |
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| 40 | NetPBMWriter::NetPBMWriter(Format formatA) : format(formatA) { } |
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| 41 | |
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| 42 | bool NetPBMWriter::init(FILE *f, int widthA, int heightA, double /*hDPI*/, double /*vDPI*/) |
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| 43 | { |
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| 44 | file = f; |
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| 45 | width = widthA; |
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| 46 | if (format == MONOCHROME) { |
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| 47 | fprintf(stream: file, format: "P4\n" ); |
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| 48 | fprintf(stream: file, format: "%d %d\n" , widthA, heightA); |
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| 49 | } else { |
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| 50 | fprintf(stream: file, format: "P6\n" ); |
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| 51 | fprintf(stream: file, format: "%d %d\n" , widthA, heightA); |
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| 52 | fprintf(stream: file, format: "255\n" ); |
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| 53 | } |
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| 54 | return true; |
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| 55 | } |
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| 56 | |
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| 57 | bool NetPBMWriter::writePointers(unsigned char **rowPointers, int rowCount) |
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| 58 | { |
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| 59 | for (int i = 0; i < rowCount; i++) { |
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| 60 | writeRow(row: &rowPointers[i]); |
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| 61 | } |
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| 62 | return true; |
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| 63 | } |
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| 64 | |
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| 65 | bool NetPBMWriter::writeRow(unsigned char **row) |
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| 66 | { |
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| 67 | if (format == MONOCHROME) { |
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| 68 | // PBM uses 0 = white, 1 = black so we need to invert the colors |
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| 69 | int size = (width + 7) / 8; |
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| 70 | for (int i = 0; i < size; i++) { |
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| 71 | fputc(c: (*row)[i] ^ 0xff, stream: file); |
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| 72 | } |
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| 73 | } else { |
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| 74 | fwrite(ptr: *row, size: 1, n: width * 3, s: file); |
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| 75 | } |
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| 76 | return true; |
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| 77 | } |
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| 78 | |
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| 79 | bool NetPBMWriter::close() |
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| 80 | { |
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| 81 | return true; |
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| 82 | } |
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| 83 | |
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