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Diffstat (limited to 'gfx/ots/src/silf.h')
| -rw-r--r-- | gfx/ots/src/silf.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/gfx/ots/src/silf.h b/gfx/ots/src/silf.h new file mode 100644 index 000000000..b6c08032f --- /dev/null +++ b/gfx/ots/src/silf.h @@ -0,0 +1,196 @@ +// Copyright (c) 2009-2017 The OTS Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef OTS_SILF_H_ +#define OTS_SILF_H_ + +#include <vector> + +#include "ots.h" +#include "graphite.h" + +namespace ots { + +class OpenTypeSILF : public Table { + public: + explicit OpenTypeSILF(Font* font, uint32_t tag) + : Table(font, tag, tag) { } + + bool Parse(const uint8_t* data, size_t length) { + return this->Parse(data, length, false); + } + bool Serialize(OTSStream* out); + + private: + bool Parse(const uint8_t* data, size_t length, bool prevent_decompression); + struct SILSub : public TablePart<OpenTypeSILF> { + explicit SILSub(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent), classes(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + struct JustificationLevel : public TablePart<OpenTypeSILF> { + explicit JustificationLevel(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + uint8_t attrStretch; + uint8_t attrShrink; + uint8_t attrStep; + uint8_t attrWeight; + uint8_t runto; + uint8_t reserved; + uint8_t reserved2; + uint8_t reserved3; + }; + struct PseudoMap : public TablePart<OpenTypeSILF> { + explicit PseudoMap(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + uint32_t unicode; + uint16_t nPseudo; + }; + struct ClassMap : public TablePart<OpenTypeSILF> { + explicit ClassMap(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + struct LookupClass : public TablePart<OpenTypeSILF> { + explicit LookupClass(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + struct LookupPair : public TablePart<OpenTypeSILF> { + explicit LookupPair(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + uint16_t glyphId; + uint16_t index; + }; + uint16_t numIDs; + uint16_t searchRange; + uint16_t entrySelector; + uint16_t rangeShift; + std::vector<LookupPair> lookups; + }; + uint16_t numClass; + uint16_t numLinear; + std::vector<uint32_t> oClass; // uint16_t before v4 + std::vector<uint16_t> glyphs; + std::vector<LookupClass> lookups; + }; + struct SILPass : public TablePart<OpenTypeSILF> { + explicit SILPass(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table) { return false; } + bool ParsePart(Buffer& table, const size_t SILSub_init_offset, + const size_t next_pass_offset); + bool SerializePart(OTSStream* out) const; + struct PassRange : public TablePart<OpenTypeSILF> { + explicit PassRange(OpenTypeSILF* parent) + : TablePart<OpenTypeSILF>(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + uint16_t firstId; + uint16_t lastId; + uint16_t colId; + }; + uint8_t flags; + uint8_t maxRuleLoop; + uint8_t maxRuleContext; + uint8_t maxBackup; + uint16_t numRules; + uint16_t fsmOffset; + uint32_t pcCode; + uint32_t rcCode; + uint32_t aCode; + uint32_t oDebug; + uint16_t numRows; + uint16_t numTransitional; + uint16_t numSuccess; + uint16_t numColumns; + uint16_t numRange; + uint16_t searchRange; + uint16_t entrySelector; + uint16_t rangeShift; + std::vector<PassRange> ranges; + std::vector<uint16_t> oRuleMap; + std::vector<uint16_t> ruleMap; + uint8_t minRulePreContext; + uint8_t maxRulePreContext; + std::vector<int16_t> startStates; + std::vector<uint16_t> ruleSortKeys; + std::vector<uint8_t> rulePreContext; + uint8_t collisionThreshold; // reserved before v5 + uint16_t pConstraint; + std::vector<uint16_t> oConstraints; + std::vector<uint16_t> oActions; + std::vector<std::vector<uint16_t>> stateTrans; + uint8_t reserved2; + std::vector<uint8_t> passConstraints; + std::vector<uint8_t> ruleConstraints; + std::vector<uint8_t> actions; + std::vector<uint16_t> dActions; + std::vector<uint16_t> dStates; + std::vector<uint16_t> dCols; + }; + uint32_t ruleVersion; + uint16_t passOffset; + uint16_t pseudosOffset; + uint16_t maxGlyphID; + int16_t extraAscent; + int16_t extraDescent; + uint8_t numPasses; + uint8_t iSubst; + uint8_t iPos; + uint8_t iJust; + uint8_t iBidi; + uint8_t flags; + uint8_t maxPreContext; + uint8_t maxPostContext; + uint8_t attrPseudo; + uint8_t attrBreakWeight; + uint8_t attrDirectionality; + uint8_t attrMirroring; // reserved before v4 + uint8_t attrSkipPasses; // reserved2 before v4 + uint8_t numJLevels; + std::vector<JustificationLevel> jLevels; + uint16_t numLigComp; + uint8_t numUserDefn; + uint8_t maxCompPerLig; + uint8_t direction; + uint8_t attCollisions; // reserved3 before v5 + uint8_t reserved4; + uint8_t reserved5; + uint8_t reserved6; + uint8_t numCritFeatures; + std::vector<uint16_t> critFeatures; + uint8_t reserved7; + uint8_t numScriptTag; + std::vector<uint32_t> scriptTag; + uint16_t lbGID; + std::vector<uint32_t> oPasses; + uint16_t numPseudo; + uint16_t searchPseudo; + uint16_t pseudoSelector; + uint16_t pseudoShift; + std::vector<PseudoMap> pMaps; + ClassMap classes; + std::vector<SILPass> passes; + }; + uint32_t version; + uint32_t compHead; // compression header + static const uint32_t SCHEME = 0xF8000000; + static const uint32_t FULL_SIZE = 0x07FFFFFF; + static const uint32_t COMPILER_VERSION = 0x07FFFFFF; + uint16_t numSub; + uint16_t reserved; + std::vector<uint32_t> offset; + std::vector<SILSub> tables; +}; + +} // namespace ots + +#endif // OTS_SILF_H_ |