PNGWriter.h 1.42 KB
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//========================================================================
//
// PNGWriter.h
//
// This file is licensed under the GPLv2 or later
//
// Copyright (C) 2009 Warren Toomey <wkt@tuhs.org>
// Copyright (C) 2009 Shen Liang <shenzhuxi@gmail.com>
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// Copyright (C) 2009, 2011 Albert Astals Cid <aacid@kde.org>
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// Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
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// Copyright (C) 2010, 2011 Adrian Johnson <ajohnson@redneon.com>
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//
//========================================================================

#ifndef PNGWRITER_H
#define PNGWRITER_H

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#include "poppler-config.h"
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#ifdef ENABLE_LIBPNG

#include <cstdio>
#include <png.h>
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#include "ImgWriter.h"
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class PNGWriter : public ImgWriter
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{
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public:

  /* RGB        - 3 bytes/pixel
   * RGBA       - 4 bytes/pixel
   * GRAY       - 1 byte/pixel
   * MONOCHROME - 1 byte/pixel. PNGWriter will bitpack to 8 pixels/byte
   */
  enum Format { RGB, RGBA, GRAY, MONOCHROME };

  PNGWriter(Format format = RGB);
  ~PNGWriter();

  void setICCProfile(const char *name, unsigned char *data, int size);
  void setSRGBProfile();


  bool init(FILE *f, int width, int height, int hDPI, int vDPI);

  bool writePointers(unsigned char **rowPointers, int rowCount);
  bool writeRow(unsigned char **row);

  bool close();

private:
  Format format;
  png_structp png_ptr;
  png_infop info_ptr;
  unsigned char *icc_data;
  int icc_data_size;
  char *icc_name;
  bool sRGB_profile;
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};

#endif

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#endif