/* Copyright 2014 Google Inc. All Rights Reserved. Distributed under MIT license. See file LICENSE for detail or copy at https://opensource.org/licenses/MIT */ /* Common definition for WOFF2 encoding/decoding */ #ifndef WOFF2_WOFF2_COMMON_H_ #define WOFF2_WOFF2_COMMON_H_ #include <stddef.h> #include <inttypes.h> #include <string> namespace woff2 { static const uint32_t kWoff2Signature = 0x774f4632; // "wOF2" // Leave the first byte open to store flag_byte const unsigned int kWoff2FlagsTransform = 1 << 8; // TrueType Collection ID string: 'ttcf' static const uint32_t kTtcFontFlavor = 0x74746366; static const size_t kSfntHeaderSize = 12; static const size_t kSfntEntrySize = 16; struct Point { int x; int y; bool on_curve; }; struct Table { uint32_t tag; uint32_t flags; uint32_t src_offset; uint32_t src_length; uint32_t transform_length; uint32_t dst_offset; uint32_t dst_length; const uint8_t* dst_data; bool operator<(const Table& other) const { return tag < other.tag; } }; // Size of the collection header. 0 if version indicates this isn't a // collection. Ref http://www.microsoft.com/typography/otspec/otff.htm, // True Type Collections size_t CollectionHeaderSize(uint32_t header_version, uint32_t num_fonts); // Compute checksum over size bytes of buf uint32_t ComputeULongSum(const uint8_t* buf, size_t size); } // namespace woff2 #endif // WOFF2_WOFF2_COMMON_H_