1 /*****************************************************************************/ 2 // TIFFTranslator 3 // Written by Michael Wilber, OBOS Translation Kit Team 4 // 5 // TIFFTranslator.h 6 // 7 // This BTranslator based object is for opening and writing 8 // TIFF 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 TIFF_TRANSLATOR_H 33 #define TIFF_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 "DecodeTree.h" 45 46 // IO Extension Names: 47 #define DOCUMENT_COUNT "/documentCount" 48 #define DOCUMENT_INDEX "/documentIndex" 49 50 #define TIFF_TRANSLATOR_VERSION 100 51 52 #define TIFF_IN_QUALITY 0.1 53 #define TIFF_IN_CAPABILITY 0.1 54 #define TIFF_OUT_QUALITY 0.6 55 #define TIFF_OUT_CAPABILITY 0.2 56 57 #define BBT_IN_QUALITY 0.4 58 #define BBT_IN_CAPABILITY 0.6 59 #define BBT_OUT_QUALITY 0.4 60 #define BBT_OUT_CAPABILITY 0.6 61 62 enum TIFF_IMAGE_TYPE { 63 TIFF_BILEVEL = 1, 64 TIFF_PALETTE, 65 TIFF_RGB, 66 TIFF_CMYK 67 }; 68 69 // class for storing only the TIFF fields 70 // that are of interest to the TIFFTranslator 71 // 72 // The class is very minimal so that it is 73 // convenient to use, but cleans up after itself 74 class TiffDetails { 75 public: 76 TiffDetails(); 77 ~TiffDetails(); 78 79 uint32 width; 80 uint32 height; 81 uint32 compression; 82 uint32 t4options; 83 uint32 rowsPerStrip; 84 uint32 stripsPerImage; 85 uint32 *pstripOffsets; 86 uint32 *pstripByteCounts; 87 uint8 *pcolorMap; 88 uint16 interpretation; 89 uint16 bitsPerPixel; 90 uint16 imageType; 91 uint16 fillOrder; 92 }; 93 94 class TIFFTranslator : public BTranslator { 95 public: 96 TIFFTranslator(); 97 98 virtual const char *TranslatorName() const; 99 // returns the short name of the translator 100 101 virtual const char *TranslatorInfo() const; 102 // returns a verbose name/description for the translator 103 104 virtual int32 TranslatorVersion() const; 105 // returns the version of the translator 106 107 virtual const translation_format *InputFormats(int32 *out_count) 108 const; 109 // returns the input formats and the count of input formats 110 // that this translator supports 111 112 virtual const translation_format *OutputFormats(int32 *out_count) 113 const; 114 // returns the output formats and the count of output formats 115 // that this translator supports 116 117 virtual status_t Identify(BPositionIO *inSource, 118 const translation_format *inFormat, BMessage *ioExtension, 119 translator_info *outInfo, uint32 outType); 120 // determines whether or not this translator can convert the 121 // data in inSource to the type outType 122 123 virtual status_t Translate(BPositionIO *inSource, 124 const translator_info *inInfo, BMessage *ioExtension, 125 uint32 outType, BPositionIO *outDestination); 126 // this function is the whole point of the Translation Kit, 127 // it translates the data in inSource to outDestination 128 // using the format outType 129 130 virtual status_t MakeConfigurationView(BMessage *ioExtension, 131 BView **outView, BRect *outExtent); 132 // creates and returns the view for displaying information 133 // about this translator 134 135 protected: 136 virtual ~TIFFTranslator(); 137 // this is protected because the object is deleted by the 138 // Release() function instead of being deleted directly by 139 // the user 140 141 private: 142 status_t LoadHuffmanTrees(); 143 144 ssize_t decode_huffman(StreamBuffer *pstreambuf, TiffDetails &details, 145 uint8 *pbits); 146 ssize_t decode_t4(BitReader &stream, TiffDetails &details, 147 uint8 *pbits, bool bfirstLine); 148 149 status_t translate_from_tiff(BPositionIO *inSource, BMessage *ioExtension, 150 ssize_t amtread, uint8 *read, swap_action swp, uint32 outType, 151 BPositionIO *outDestination); 152 153 DecodeTree *fpblackTree; 154 DecodeTree *fpwhiteTree; 155 156 char fName[30]; 157 char fInfo[100]; 158 }; 159 160 #endif // #ifndef TIFF_TRANSLATOR_H 161