sfwoff2.h (2124B)
1 /**************************************************************************** 2 * 3 * sfwoff2.h 4 * 5 * WOFFF2 format management (specification). 6 * 7 * Copyright (C) 2019-2025 by 8 * Nikhil Ramakrishnan, David Turner, Robert Wilhelm, and Werner Lemberg. 9 * 10 * This file is part of the FreeType project, and may only be used, 11 * modified, and distributed under the terms of the FreeType project 12 * license, LICENSE.TXT. By continuing to use, modify, or distribute 13 * this file you indicate that you have read the license and 14 * understand and accept it fully. 15 * 16 */ 17 18 19 #ifndef SFWOFF2_H_ 20 #define SFWOFF2_H_ 21 22 23 #include <freetype/internal/sfnt.h> 24 #include <freetype/internal/ftobjs.h> 25 26 27 FT_BEGIN_HEADER 28 29 #ifdef FT_CONFIG_OPTION_USE_BROTLI 30 31 /* Leave the first byte open to store `flag_byte'. */ 32 #define WOFF2_FLAGS_TRANSFORM 1 << 8 33 34 #define WOFF2_SFNT_HEADER_SIZE 12 35 #define WOFF2_SFNT_ENTRY_SIZE 16 36 37 /* Suggested maximum size for output. */ 38 #define WOFF2_DEFAULT_MAX_SIZE 30 * 1024 * 1024 39 40 /* 98% of Google Fonts have no glyph above 5k bytes. */ 41 #define WOFF2_DEFAULT_GLYPH_BUF 5120 42 43 /* Composite glyph flags. */ 44 /* See `CompositeGlyph.java' in `sfntly' for full definitions. */ 45 #define FLAG_ARG_1_AND_2_ARE_WORDS 1 << 0 46 #define FLAG_WE_HAVE_A_SCALE 1 << 3 47 #define FLAG_MORE_COMPONENTS 1 << 5 48 #define FLAG_WE_HAVE_AN_X_AND_Y_SCALE 1 << 6 49 #define FLAG_WE_HAVE_A_TWO_BY_TWO 1 << 7 50 #define FLAG_WE_HAVE_INSTRUCTIONS 1 << 8 51 52 /* Simple glyph flags */ 53 #define GLYF_ON_CURVE 1 << 0 54 #define GLYF_X_SHORT 1 << 1 55 #define GLYF_Y_SHORT 1 << 2 56 #define GLYF_REPEAT 1 << 3 57 #define GLYF_THIS_X_IS_SAME 1 << 4 58 #define GLYF_THIS_Y_IS_SAME 1 << 5 59 #define GLYF_OVERLAP_SIMPLE 1 << 6 60 61 /* Other constants */ 62 #define CONTOUR_OFFSET_END_POINT 10 63 64 65 FT_LOCAL( FT_Error ) 66 woff2_open_font( FT_Stream stream, 67 TT_Face face, 68 FT_Int* face_index, 69 FT_Long* num_faces ); 70 71 #endif /* FT_CONFIG_OPTION_USE_BROTLI */ 72 73 FT_END_HEADER 74 75 #endif /* SFWOFF2_H_ */ 76 77 78 /* END */