src/chrome/utility/cloud_print/pwg_encoder.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_UTILITY_CLOUD_PRINT_PWG_ENCODER_H_
   6 #define CHROME_UTILITY_CLOUD_PRINT_PWG_ENCODER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11
  12 namespace cloud_print {
  13
  14 class BitmapImage;
  15
  16 struct PwgHeaderInfo {
  17   PwgHeaderInfo()
  18       : dpi(300),
  19         total_pages(1),
  20         flipx(false),
  21         flipy(false),
  22         color_space(SRGB),
  23         duplex(false),
  24         tumble(false) {}
  25   enum ColorSpace { SGRAY = 18, SRGB = 19 };
  26   uint32 dpi;
  27   uint32 total_pages;
  28   bool flipx;
  29   bool flipy;
  30   ColorSpace color_space;
  31   bool duplex;
  32   bool tumble;
  33 };
  34
  35 class PwgEncoder {
  36  public:
  37   PwgEncoder();
  38
  39   void EncodeDocumentHeader(std::string *output) const;
  40   bool EncodePage(const BitmapImage& image,
  41                   const PwgHeaderInfo& pwg_header_info,
  42                   std::string* output) const;
  43
  44  private:
  45   void EncodePageHeader(const BitmapImage& image,
  46                         const PwgHeaderInfo& pwg_header_info,
  47                         std::string* output) const;
  48
  49   template <typename InputStruct, class RandomAccessIterator>
  50   void EncodeRow(RandomAccessIterator pos,
  51                  RandomAccessIterator row_end,
  52                  bool monochrome,
  53                  std::string* output) const;
  54
  55   template <typename InputStruct>
  56   bool EncodePageWithColorspace(const BitmapImage& image,
  57                                 const PwgHeaderInfo& pwg_header_info,
  58                                 std::string* output) const;
  59
  60   const uint8* GetRow(const BitmapImage& image, int row, bool flipy) const;
  61 };
  62
  63 }  // namespace cloud_print
  64
  65 #endif  // CHROME_UTILITY_CLOUD_PRINT_PWG_ENCODER_H_