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
16struct 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>
69static_assert(offsetof(SkOTTableGridAndScanProcedure, numRanges) == 2, "SkOTTableGridAndScanProcedure_numRanges_not_at_2");
70static_assert(sizeof(SkOTTableGridAndScanProcedure) == 4, "sizeof_SkOTTableGridAndScanProcedure_not_4");
71
72#endif
73