1 /* 2 * Copyright 2010, 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(0,2,0) 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 88