/* * Copyright 2012 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkSFNTHeader_DEFINED #define SkSFNTHeader_DEFINED #include "src/core/SkEndian.h" #include "src/sfnt/SkOTTableTypes.h" //All SK_SFNT_ prefixed types should be considered as big endian. typedef uint16_t SK_SFNT_USHORT; typedef uint32_t SK_SFNT_ULONG; #pragma pack(push, 1) struct SkSFNTHeader { SK_SFNT_ULONG fontType; struct fontType_WindowsTrueType { static const SK_OT_CHAR TAG0 = 0; static const SK_OT_CHAR TAG1 = 1; static const SK_OT_CHAR TAG2 = 0; static const SK_OT_CHAR TAG3 = 0; static const SK_OT_ULONG TAG = SkOTTableTAG::value; }; struct fontType_MacTrueType { static const SK_OT_CHAR TAG0 = 't'; static const SK_OT_CHAR TAG1 = 'r'; static const SK_OT_CHAR TAG2 = 'u'; static const SK_OT_CHAR TAG3 = 'e'; static const SK_OT_ULONG TAG = SkOTTableTAG::value; }; struct fontType_PostScript { static const SK_OT_CHAR TAG0 = 't'; static const SK_OT_CHAR TAG1 = 'y'; static const SK_OT_CHAR TAG2 = 'p'; static const SK_OT_CHAR TAG3 = '1'; static const SK_OT_ULONG TAG = SkOTTableTAG::value; }; struct fontType_OpenTypeCFF { static const SK_OT_CHAR TAG0 = 'O'; static const SK_OT_CHAR TAG1 = 'T'; static const SK_OT_CHAR TAG2 = 'T'; static const SK_OT_CHAR TAG3 = 'O'; static const SK_OT_ULONG TAG = SkOTTableTAG::value; }; SK_SFNT_USHORT numTables; SK_SFNT_USHORT searchRange; SK_SFNT_USHORT entrySelector; SK_SFNT_USHORT rangeShift; struct TableDirectoryEntry { SK_SFNT_ULONG tag; SK_SFNT_ULONG checksum; SK_SFNT_ULONG offset; //From beginning of header. SK_SFNT_ULONG logicalLength; }; //tableDirectoryEntries[numTables] }; #pragma pack(pop) static_assert(sizeof(SkSFNTHeader) == 12, "sizeof_SkSFNTHeader_not_12"); static_assert(sizeof(SkSFNTHeader::TableDirectoryEntry) == 16, "sizeof_SkSFNTHeader_TableDirectoryEntry_not_16"); #endif