src/add-ons/translators/png/PNGTranslator.h

   1 /*****************************************************************************/
   2 // PNGTranslator
   3 // Written by Michael Wilber, OBOS Translation Kit Team
   4 //
   5 // PNGTranslator.h
   6 //
   7 // This BTranslator based object is for opening and writing
   8 // PNG images.
   9 //
  10 //
  11 // Copyright (c) 2003 OpenBeOS Project
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining a
  14 // copy of this software and associated documentation files (the "Software"),
  15 // to deal in the Software without restriction, including without limitation
  16 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  17 // and/or sell copies of the Software, and to permit persons to whom the
  18 // Software is furnished to do so, subject to the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be included
  21 // in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  24 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  26 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  27 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  28 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  29 // DEALINGS IN THE SOFTWARE.
  30 /*****************************************************************************/
  31
  32 #ifndef PNG_TRANSLATOR_H
  33 #define PNG_TRANSLATOR_H
  34
  35 #include <Translator.h>
  36 #include <TranslatorFormats.h>
  37 #include <TranslationDefs.h>
  38 #include <GraphicsDefs.h>
  39 #include <InterfaceDefs.h>
  40 #include <DataIO.h>
  41 #include <File.h>
  42 #include <ByteOrder.h>
  43 #include <fs_attr.h>
  44 #include "BaseTranslator.h"
  45
  46 // PNG Translator Settings
  47 #define PNG_SETTING_INTERLACE "png /interlace"
  48
  49 #define PNG_TRANSLATOR_VERSION B_TRANSLATION_MAKE_VERSION(1,0,0)
  50
  51 #define PNG_IN_QUALITY 0.8
  52 #define PNG_IN_CAPABILITY 0.8
  53 #define PNG_OUT_QUALITY 0.8
  54 #define PNG_OUT_CAPABILITY 0.5
  55
  56 #define BBT_IN_QUALITY 0.8
  57 #define BBT_IN_CAPABILITY 0.6
  58 #define BBT_OUT_QUALITY 0.5
  59 #define BBT_OUT_CAPABILITY 0.4
  60
  61
  62 class PNGTranslator : public BaseTranslator {
  63 public:
  64         PNGTranslator();
  65
  66         virtual status_t DerivedIdentify(BPositionIO *inSource,
  67                 const translation_format *inFormat, BMessage *ioExtension,
  68                 translator_info *outInfo, uint32 outType);
  69
  70         virtual status_t DerivedTranslate(BPositionIO *inSource,
  71                 const translator_info *inInfo, BMessage *ioExtension,
  72                 uint32 outType, BPositionIO *outDestination, int32 baseType);
  73
  74         virtual BView *NewConfigView(TranslatorSettings *settings);
  75
  76 protected:
  77         virtual ~PNGTranslator();
  78                 // this is protected because the object is deleted by the
  79                 // Release() function instead of being deleted directly by
  80                 // the user
  81
  82 private:
  83         status_t translate_from_png_to_bits(BPositionIO *inSource,
  84                 BPositionIO *outDestination);
  85
  86         status_t translate_from_png(BPositionIO *inSource, uint32 outType,
  87                 BPositionIO *outDestination);
  88
  89         status_t translate_from_bits_to_png(BPositionIO *inSource,
  90                 BPositionIO *outDestination);
  91 };
  92
  93 #endif // #ifndef PNG_TRANSLATOR_H