1 /* 2 * Copyright 2014 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkOTTable_gasp_DEFINED 9 #define SkOTTable_gasp_DEFINED 10 11 #include "SkEndian.h" 12 #include "SkOTTableTypes.h" 13 14 #pragma pack(push, 1) 15 16 struct SkOTTableGridAndScanProcedure { 17 static const SK_OT_CHAR TAG0 = 'g'; 18 static const SK_OT_CHAR TAG1 = 'a'; 19 static const SK_OT_CHAR TAG2 = 's'; 20 static const SK_OT_CHAR TAG3 = 'p'; 21 static const SK_OT_ULONG TAG = SkOTTableTAG<SkOTTableGridAndScanProcedure>::value; 22 23 SK_OT_USHORT version; 24 static const SK_OT_USHORT version0 = SkTEndian_SwapBE16(0); 25 static const SK_OT_USHORT version1 = SkTEndian_SwapBE16(1); 26 27 SK_OT_USHORT numRanges; 28 29 struct GaspRange { 30 SK_OT_USHORT maxPPEM; 31 union behavior { 32 struct Field { 33 //8-15 34 SK_OT_BYTE_BITFIELD( 35 Reserved08, 36 Reserved09, 37 Reserved10, 38 Reserved11, 39 Reserved12, 40 Reserved13, 41 Reserved14, 42 Reserved15) 43 //0-7 44 SK_OT_BYTE_BITFIELD( 45 Gridfit, 46 DoGray, 47 SymmetricGridfit, // Version 1 48 SymmetricSmoothing, // Version 1 49 Reserved04, 50 Reserved05, 51 Reserved06, 52 Reserved07) 53 } field; 54 struct Raw { 55 static const SK_OT_USHORT GridfitMask = SkTEndian_SwapBE16(1 << 0); 56 static const SK_OT_USHORT DoGrayMask = SkTEndian_SwapBE16(1 << 1); 57 static const SK_OT_USHORT SymmetricGridfitMask = SkTEndian_SwapBE16(1 << 2); 58 static const SK_OT_USHORT SymmetricSmoothingMask = SkTEndian_SwapBE16(1 << 3); 59 SK_OT_USHORT value; 60 } raw; 61 } flags; 62 }; //gaspRange[numRanges] 63 }; 64 65 #pragma pack(pop) 66 67 68 #include <stddef.h> 69 static_assert(offsetof(SkOTTableGridAndScanProcedure, numRanges) == 2, "SkOTTableGridAndScanProcedure_numRanges_not_at_2"); 70 static_assert(sizeof(SkOTTableGridAndScanProcedure) == 4, "sizeof_SkOTTableGridAndScanProcedure_not_4"); 71 72 #endif 73
