| /* |
| * 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 SkOTTableTypes_DEFINED |
| #define SkOTTableTypes_DEFINED |
| |
| #include "SkTypes.h" |
| #include "SkEndian.h" |
| |
| //All SK_OT_ prefixed types should be considered as big endian. |
| typedef uint8_t SK_OT_BYTE; |
| #if CHAR_BIT == 8 |
| typedef signed char SK_OT_CHAR; //easier to debug |
| #else |
| typedef int8_t SK_OT_CHAR; |
| #endif |
| typedef uint16_t SK_OT_SHORT; |
| typedef uint16_t SK_OT_USHORT; |
| typedef uint32_t SK_OT_ULONG; |
| typedef uint32_t SK_OT_LONG; |
| //16.16 Signed fixed point representation. |
| typedef int32_t SK_OT_Fixed; |
| //2.14 Signed fixed point representation. |
| typedef uint16_t SK_OT_F2DOT14; |
| //F units are the units of measurement in em space. |
| typedef uint16_t SK_OT_FWORD; |
| typedef uint16_t SK_OT_UFWORD; |
| //Number of seconds since 12:00 midnight, January 1, 1904. |
| typedef uint64_t SK_OT_LONGDATETIME; |
| |
| #define SK_OT_BYTE_BITFIELD SK_UINT8_BITFIELD |
| |
| template<typename T> class SkOTTableTAG { |
| public: |
| /** |
| * SkOTTableTAG<T>::value is the big endian value of an OpenType table tag. |
| * It may be directly compared with raw big endian table data. |
| */ |
| static const SK_OT_ULONG value = SkTEndian_SwapBE32( |
| SkSetFourByteTag(T::TAG0, T::TAG1, T::TAG2, T::TAG3) |
| ); |
| }; |
| |
| /** SkOTSetUSHORTBit<N>::value is an SK_OT_USHORT with the Nth BE bit set. */ |
| template <unsigned N> struct SkOTSetUSHORTBit { |
| static_assert(N < 16, "NTooBig"); |
| static const uint16_t bit = 1u << N; |
| static const SK_OT_USHORT value = SkTEndian_SwapBE16(bit); |
| }; |
| |
| /** SkOTSetULONGBit<N>::value is an SK_OT_ULONG with the Nth BE bit set. */ |
| template <unsigned N> struct SkOTSetULONGBit { |
| static_assert(N < 32, "NTooBig"); |
| static const uint32_t bit = 1u << N; |
| static const SK_OT_ULONG value = SkTEndian_SwapBE32(bit); |
| }; |
| |
| #endif |