src/add-ons/translators/webp/WebPTranslator.h

   1 /*
   2  * Copyright 2010-2017, Haiku. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Philippe Houdoin
   7  */
   8 #ifndef WEBP_TRANSLATOR_H
   9 #define WEBP_TRANSLATOR_H
  10
  11
  12 #include <ByteOrder.h>
  13 #include <DataIO.h>
  14 #include <File.h>
  15 #include <fs_attr.h>
  16 #include <GraphicsDefs.h>
  17 #include <InterfaceDefs.h>
  18 #include <TranslationDefs.h>
  19 #include <Translator.h>
  20 #include <TranslatorFormats.h>
  21
  22 #include "BaseTranslator.h"
  23
  24 #define WEBP_TRANSLATOR_VERSION B_TRANSLATION_MAKE_VERSION(0,6,0)
  25 #define WEBP_IMAGE_FORMAT       'WebP'
  26
  27 #define WEBP_SETTING_QUALITY            "quality"
  28 #define WEBP_SETTING_PRESET                     "preset"
  29 #define WEBP_SETTING_SHARPNESS          "sharpness"
  30 #define WEBP_SETTING_METHOD                     "method"
  31 #define WEBP_SETTING_PREPROCESSING      "preprocessing"
  32
  33
  34 #define WEBP_IN_QUALITY 0.90
  35 #define WEBP_IN_CAPABILITY 0.90
  36
  37 #define WEBP_OUT_QUALITY 0.90
  38 #define WEBP_OUT_CAPABILITY 0.5
  39
  40 #define BITS_IN_QUALITY 0.8
  41 #define BITS_IN_CAPABILITY 0.6
  42
  43 #define BITS_OUT_QUALITY 0.5
  44 #define BITS_OUT_CAPABILITY 0.4
  45
  46
  47 struct WebPPicture;
  48
  49
  50 class WebPTranslator : public BaseTranslator {
  51 public:
  52                                                         WebPTranslator();
  53
  54         virtual status_t                DerivedIdentify(BPositionIO* stream,
  55                                                                 const translation_format* format,
  56                                                                 BMessage* settings, translator_info* info,
  57                                                                 uint32 outType);
  58
  59         virtual status_t                DerivedTranslate(BPositionIO* stream,
  60                                                                 const translator_info* info,
  61                                                                 BMessage* settings, uint32 outType,
  62                                                                 BPositionIO* target, int32 baseType);
  63
  64         virtual BView*                  NewConfigView(TranslatorSettings* settings);
  65
  66 protected:
  67         virtual                                 ~WebPTranslator();
  68                 // this is protected because the object is deleted by the
  69                 // Release() function instead of being deleted directly by
  70                 // the user
  71
  72 private:
  73                         status_t                _TranslateFromBits(BPositionIO* stream,
  74                                                                 BMessage* settings, uint32 outType,
  75                                                                 BPositionIO* target);
  76
  77                         status_t                _TranslateFromWebP(BPositionIO* stream,
  78                                                                 BMessage* settings, uint32 outType,
  79                                                                 BPositionIO* target);
  80
  81         static  int                     _EncodedWriter(const uint8_t* data,
  82                                                                 size_t dataSize,
  83                                                                 const WebPPicture* const picture);
  84 };
  85
  86
  87 #endif // #ifndef WEBP_TRANSLATOR_H