1b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru/* 2b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru * 38393335b955da7340c9f19b1b4b2d6c0c2c04be7Craig Cornelius * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved 4b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru * 5b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru */ 6b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 7b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "LETypes.h" 8b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "OpenTypeUtilities.h" 9b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "LEFontInstance.h" 10b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "OpenTypeTables.h" 1150294ead5e5d23f5bbfed76e00e6b510bd41eee1claireho#include "ICUFeatures.h" 12b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "Lookups.h" 13b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "ScriptAndLanguage.h" 14b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "GlyphDefinitionTables.h" 15b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "GlyphIterator.h" 16b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "LookupProcessor.h" 17b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "LEGlyphStorage.h" 18b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#include "LESwaps.h" 19b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 20b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruU_NAMESPACE_BEGIN 21b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 2259d709d503bab6e2b61931737e662dd293b40578ccorneliusle_uint32 LookupProcessor::applyLookupTable(const LEReferenceTo<LookupTable> &lookupTable, GlyphIterator *glyphIterator, 23b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru const LEFontInstance *fontInstance, LEErrorCode& success) const 24b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 25b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (LE_FAILURE(success)) { 26b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return 0; 27b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 28b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru 29b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 lookupType = SWAPW(lookupTable->lookupType); 30b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 subtableCount = SWAPW(lookupTable->subTableCount); 31b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_int32 startPosition = glyphIterator->getCurrStreamPosition(); 32b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint32 delta; 33b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 34b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (le_uint16 subtable = 0; subtable < subtableCount; subtable += 1) { 3559d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceTo<LookupSubtable> lookupSubtable = lookupTable->getLookupSubtable(lookupTable, subtable, success); 36b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 37b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru delta = applySubtable(lookupSubtable, lookupType, glyphIterator, fontInstance, success); 38b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 3959d709d503bab6e2b61931737e662dd293b40578ccornelius if (delta > 0 || LE_FAILURE(success)) { // Google patch: && -> || 40b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return 1; 41b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 42b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 43b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru glyphIterator->setCurrStreamPosition(startPosition); 44b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 45b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 46b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return 1; 47b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 48b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 49b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Querule_int32 LookupProcessor::process(LEGlyphStorage &glyphStorage, GlyphPositionAdjustments *glyphPositionAdjustments, 5059d709d503bab6e2b61931737e662dd293b40578ccornelius le_bool rightToLeft, const LEReferenceTo<GlyphDefinitionTableHeader> &glyphDefinitionTableHeader, 51b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru const LEFontInstance *fontInstance, LEErrorCode& success) const 52b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 53b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (LE_FAILURE(success)) { 54b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return 0; 55b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 56b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru 57b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_int32 glyphCount = glyphStorage.getGlyphCount(); 58b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 59b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (lookupSelectArray == NULL) { 60b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return glyphCount; 61b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 62b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 63b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru GlyphIterator glyphIterator(glyphStorage, glyphPositionAdjustments, 64b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru rightToLeft, 0, 0, glyphDefinitionTableHeader); 65b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_int32 newGlyphCount = glyphCount; 66b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 6759d709d503bab6e2b61931737e662dd293b40578ccornelius for (le_uint16 order = 0; order < lookupOrderCount && LE_SUCCESS(success); order += 1) { 68b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 lookup = lookupOrderArray[order]; 69b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru FeatureMask selectMask = lookupSelectArray[lookup]; 70b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 71b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (selectMask != 0) { 7259d709d503bab6e2b61931737e662dd293b40578ccornelius const LEReferenceTo<LookupTable> lookupTable = lookupListTable->getLookupTable(lookupListTable, lookup, success); 7359d709d503bab6e2b61931737e662dd293b40578ccornelius if (!lookupTable.isValid() ||LE_FAILURE(success) ) { 74b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho continue; 75b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 76b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 lookupFlags = SWAPW(lookupTable->lookupFlags); 77b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 78b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru glyphIterator.reset(lookupFlags, selectMask); 79b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 80b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru while (glyphIterator.findFeatureTag()) { 81b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru applyLookupTable(lookupTable, &glyphIterator, fontInstance, success); 82b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (LE_FAILURE(success)) { 83b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return 0; 84b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 85b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 86b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 87b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru newGlyphCount = glyphIterator.applyInsertions(); 88b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 89b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 90b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 91b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return newGlyphCount; 92b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 93b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 94b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Querule_uint32 LookupProcessor::applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator, 95b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru const LEFontInstance *fontInstance, LEErrorCode& success) const 96b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 97b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (LE_FAILURE(success)) { 98b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return 0; 99b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 100b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru 10159d709d503bab6e2b61931737e662dd293b40578ccornelius const LEReferenceTo<LookupTable> lookupTable = lookupListTable->getLookupTable(lookupListTable, lookupTableIndex, success); 10259d709d503bab6e2b61931737e662dd293b40578ccornelius if (!lookupTable.isValid()) { 10359d709d503bab6e2b61931737e662dd293b40578ccornelius // Google patch: remove success = LE_INTERNAL_ERROR; (is this right?) 1048393335b955da7340c9f19b1b4b2d6c0c2c04be7Craig Cornelius return 0; 1058393335b955da7340c9f19b1b4b2d6c0c2c04be7Craig Cornelius } 106b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 lookupFlags = SWAPW(lookupTable->lookupFlags); 107b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru GlyphIterator tempIterator(*glyphIterator, lookupFlags); 108b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru le_uint32 delta = applyLookupTable(lookupTable, &tempIterator, fontInstance, success); 109b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 110b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return delta; 111b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 112b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 11359d709d503bab6e2b61931737e662dd293b40578ccorneliusle_int32 LookupProcessor::selectLookups(const LEReferenceTo<FeatureTable> &featureTable, FeatureMask featureMask, le_int32 order, LEErrorCode &success) 114b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 11559d709d503bab6e2b61931737e662dd293b40578ccornelius le_uint16 lookupCount = featureTable.isValid()? SWAPW(featureTable->lookupCount) : 0; 116b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_int32 store = order; 11759d709d503bab6e2b61931737e662dd293b40578ccornelius 11859d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceToArrayOf<le_uint16> lookupListIndexArray(featureTable, success, featureTable->lookupListIndexArray, lookupCount); 11959d709d503bab6e2b61931737e662dd293b40578ccornelius 12059d709d503bab6e2b61931737e662dd293b40578ccornelius for (le_uint16 lookup = 0; LE_SUCCESS(success) && lookup < lookupCount; lookup += 1) { 12159d709d503bab6e2b61931737e662dd293b40578ccornelius le_uint16 lookupListIndex = SWAPW(lookupListIndexArray.getObject(lookup,success)); 12259d709d503bab6e2b61931737e662dd293b40578ccornelius if (lookupListIndex >= lookupSelectCount) { 12359d709d503bab6e2b61931737e662dd293b40578ccornelius continue; 12459d709d503bab6e2b61931737e662dd293b40578ccornelius } 12559d709d503bab6e2b61931737e662dd293b40578ccornelius 12659d709d503bab6e2b61931737e662dd293b40578ccornelius lookupSelectArray[lookupListIndex] |= featureMask; 12759d709d503bab6e2b61931737e662dd293b40578ccornelius lookupOrderArray[store++] = lookupListIndex; 128b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 129b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 130b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return store - order; 131b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 132b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 13359d709d503bab6e2b61931737e662dd293b40578ccorneliusLookupProcessor::LookupProcessor(const LETableReference &baseAddress, 134b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset, 135b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru LETag scriptTag, LETag languageTag, const FeatureMap *featureMap, le_int32 featureMapCount, le_bool orderFeatures, 136b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru LEErrorCode& success) 13759d709d503bab6e2b61931737e662dd293b40578ccornelius : lookupListTable(), featureListTable(), lookupSelectArray(NULL), lookupSelectCount(0), 13859d709d503bab6e2b61931737e662dd293b40578ccornelius lookupOrderArray(NULL), lookupOrderCount(0), fReference(baseAddress) 139b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 14059d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceTo<ScriptListTable> scriptListTable; 14159d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceTo<LangSysTable> langSysTable; 142b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 featureCount = 0; 143b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 lookupListCount = 0; 144b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_uint16 requiredFeatureIndex; 145b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 146b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (LE_FAILURE(success)) { 147b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return; 148b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 149b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru 150b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (scriptListOffset != 0) { 15159d709d503bab6e2b61931737e662dd293b40578ccornelius scriptListTable = LEReferenceTo<ScriptListTable>(baseAddress, success, scriptListOffset); 15259d709d503bab6e2b61931737e662dd293b40578ccornelius langSysTable = scriptListTable->findLanguage(scriptListTable, scriptTag, languageTag, success); 153b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 15459d709d503bab6e2b61931737e662dd293b40578ccornelius if (langSysTable.isValid() && LE_SUCCESS(success)) { 15559d709d503bab6e2b61931737e662dd293b40578ccornelius featureCount = SWAPW(langSysTable->featureCount); 15659d709d503bab6e2b61931737e662dd293b40578ccornelius } 157b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 158b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 159b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (featureListOffset != 0) { 16059d709d503bab6e2b61931737e662dd293b40578ccornelius featureListTable = LEReferenceTo<FeatureListTable>(baseAddress, success, featureListOffset); 161b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 162b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 163b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (lookupListOffset != 0) { 16459d709d503bab6e2b61931737e662dd293b40578ccornelius lookupListTable = LEReferenceTo<LookupListTable>(baseAddress,success, lookupListOffset); 16559d709d503bab6e2b61931737e662dd293b40578ccornelius if(LE_SUCCESS(success) && lookupListTable.isValid()) { 166b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lookupListCount = SWAPW(lookupListTable->lookupCount); 16759d709d503bab6e2b61931737e662dd293b40578ccornelius } 168b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 169b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 17059d709d503bab6e2b61931737e662dd293b40578ccornelius if (langSysTable.isEmpty() || featureListTable.isEmpty() || lookupListTable.isEmpty() || 171b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru featureCount == 0 || lookupListCount == 0) { 172b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru return; 173b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 174b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 17559d709d503bab6e2b61931737e662dd293b40578ccornelius if(langSysTable.isValid()) { 17659d709d503bab6e2b61931737e662dd293b40578ccornelius requiredFeatureIndex = SWAPW(langSysTable->reqFeatureIndex); 17759d709d503bab6e2b61931737e662dd293b40578ccornelius } 178b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 179b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lookupSelectArray = LE_NEW_ARRAY(FeatureMask, lookupListCount); 180b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (lookupSelectArray == NULL) { 181b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru success = LE_MEMORY_ALLOCATION_ERROR; 182b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return; 183b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 184b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 185b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (int i = 0; i < lookupListCount; i += 1) { 186b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lookupSelectArray[i] = 0; 187b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 188b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho lookupSelectCount = lookupListCount; 189b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 190b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_int32 count, order = 0; 19159d709d503bab6e2b61931737e662dd293b40578ccornelius le_uint32 featureReferences = 0; 19259d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceTo<FeatureTable> featureTable; 193b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru LETag featureTag; 194b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 19559d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceTo<FeatureTable> requiredFeatureTable; 196b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru LETag requiredFeatureTag = 0x00000000U; 197b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 198b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // Count the total number of lookups referenced by all features. This will 199b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // be the maximum number of entries in the lookupOrderArray. We can't use 200b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // lookupListCount because some lookups might be referenced by more than 201b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // one feature. 20259d709d503bab6e2b61931737e662dd293b40578ccornelius if(featureListTable.isValid() && LE_SUCCESS(success)) { 20359d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceToArrayOf<le_uint16> featureIndexArray(langSysTable, success, langSysTable->featureIndexArray, featureCount); 20459d709d503bab6e2b61931737e662dd293b40578ccornelius 20559d709d503bab6e2b61931737e662dd293b40578ccornelius for (le_uint32 feature = 0; LE_SUCCESS(success)&&(feature < featureCount); feature += 1) { 20659d709d503bab6e2b61931737e662dd293b40578ccornelius le_uint16 featureIndex = SWAPW(featureIndexArray.getObject(feature, success)); 20759d709d503bab6e2b61931737e662dd293b40578ccornelius 20859d709d503bab6e2b61931737e662dd293b40578ccornelius featureTable = featureListTable->getFeatureTable(featureListTable, featureIndex, &featureTag, success); 20959d709d503bab6e2b61931737e662dd293b40578ccornelius if (!featureTable.isValid() || LE_FAILURE(success)) { 21059d709d503bab6e2b61931737e662dd293b40578ccornelius continue; 211b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 212b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru featureReferences += SWAPW(featureTable->lookupCount); 21359d709d503bab6e2b61931737e662dd293b40578ccornelius } 214b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 215b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 21659d709d503bab6e2b61931737e662dd293b40578ccornelius if (!featureTable.isValid() || LE_FAILURE(success)) { 21754dcd9b6a06071f647dac967e9e267abb9410720Craig Cornelius success = LE_INTERNAL_ERROR; 21854dcd9b6a06071f647dac967e9e267abb9410720Craig Cornelius return; 21954dcd9b6a06071f647dac967e9e267abb9410720Craig Cornelius } 22054dcd9b6a06071f647dac967e9e267abb9410720Craig Cornelius 221b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (requiredFeatureIndex != 0xFFFF) { 22259d709d503bab6e2b61931737e662dd293b40578ccornelius requiredFeatureTable = featureListTable->getFeatureTable(featureListTable, requiredFeatureIndex, &requiredFeatureTag, success); 22359d709d503bab6e2b61931737e662dd293b40578ccornelius featureReferences += SWAPW(featureTable->lookupCount); 224b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 225b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 226b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lookupOrderArray = LE_NEW_ARRAY(le_uint16, featureReferences); 227b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru if (lookupOrderArray == NULL) { 228b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru success = LE_MEMORY_ALLOCATION_ERROR; 229b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru return; 230b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru } 231b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 232b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (le_int32 f = 0; f < featureMapCount; f += 1) { 233b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru FeatureMap fm = featureMap[f]; 234b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru count = 0; 235b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 236b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If this is the required feature, add its lookups 237b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (requiredFeatureTag == fm.tag) { 23859d709d503bab6e2b61931737e662dd293b40578ccornelius count += selectLookups(requiredFeatureTable, fm.mask, order, success); 239b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 240b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 241b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (orderFeatures) { 242b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If we added lookups from the required feature, sort them 243b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (count > 1) { 244b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru OpenTypeUtilities::sort(lookupOrderArray, order); 245b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 246b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 247b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (le_uint16 feature = 0; feature < featureCount; feature += 1) { 24859d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceToArrayOf<le_uint16> featureIndexArray(langSysTable, success, langSysTable->featureIndexArray, featureCount); 24959d709d503bab6e2b61931737e662dd293b40578ccornelius le_uint16 featureIndex = SWAPW(featureIndexArray.getObject(feature,success)); 250b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 251b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // don't add the required feature to the list more than once... 252b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // TODO: Do we need this check? (Spec. says required feature won't be in feature list...) 253b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (featureIndex == requiredFeatureIndex) { 254b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru continue; 255b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 256b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 25759d709d503bab6e2b61931737e662dd293b40578ccornelius featureTable = featureListTable->getFeatureTable(featureListTable, featureIndex, &featureTag, success); 258b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 259b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (featureTag == fm.tag) { 26059d709d503bab6e2b61931737e662dd293b40578ccornelius count += selectLookups(featureTable, fm.mask, order + count, success); 261b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 262b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 263b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 264b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (count > 1) { 265b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru OpenTypeUtilities::sort(&lookupOrderArray[order], count); 266b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 267b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 268b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru order += count; 26959d709d503bab6e2b61931737e662dd293b40578ccornelius } else if(langSysTable.isValid()) { 27059d709d503bab6e2b61931737e662dd293b40578ccornelius LEReferenceToArrayOf<le_uint16> featureIndexArray(langSysTable, success, langSysTable->featureIndexArray, featureCount); 27159d709d503bab6e2b61931737e662dd293b40578ccornelius for (le_uint16 feature = 0; LE_SUCCESS(success)&& (feature < featureCount); feature += 1) { 27259d709d503bab6e2b61931737e662dd293b40578ccornelius le_uint16 featureIndex = SWAPW(featureIndexArray.getObject(feature,success)); 273b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 274b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // don't add the required feature to the list more than once... 275b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // NOTE: This check is commented out because the spec. says that 276b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // the required feature won't be in the feature list, and because 277b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // any duplicate entries will be removed below. 278b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#if 0 279b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (featureIndex == requiredFeatureIndex) { 280b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru continue; 281b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 282b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru#endif 283b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 28459d709d503bab6e2b61931737e662dd293b40578ccornelius featureTable = featureListTable->getFeatureTable(featureListTable, featureIndex, &featureTag, success); 285b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 286b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (featureTag == fm.tag) { 28759d709d503bab6e2b61931737e662dd293b40578ccornelius order += selectLookups(featureTable, fm.mask, order, success); 288b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 289b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 290b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 291b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 292b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 293b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (!orderFeatures && (order > 1)) { 294b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru OpenTypeUtilities::sort(lookupOrderArray, order); 295b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 296b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // If there's no specified feature order, 297b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // we will apply the lookups in the order 298b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // that they're in the font. If a particular 299b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // lookup may be referenced by more than one feature, 300b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // it will apprear in the lookupOrderArray more than 301b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru // once, so remove any duplicate entries in the sorted array. 302b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru le_int32 out = 1; 303b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 304b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru for (le_int32 in = 1; in < order; in += 1) { 305b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (lookupOrderArray[out - 1] != lookupOrderArray[in]) { 306b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru if (out != in) { 307b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lookupOrderArray[out] = lookupOrderArray[in]; 308b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 309b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 310b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru out += 1; 311b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 312b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 313b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 314b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru order = out; 315b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru } 316b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 317b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru lookupOrderCount = order; 318b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 319b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 320b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruLookupProcessor::LookupProcessor() 321b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 322b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru lookupOrderArray = NULL; 323b0ac937921a2c196d8b9da665135bf6ba01a1ccfJean-Baptiste Queru lookupSelectArray = NULL; 324b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 325b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 326b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruLookupProcessor::~LookupProcessor() 327b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru{ 328b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru LE_DELETE_ARRAY(lookupOrderArray); 329b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru LE_DELETE_ARRAY(lookupSelectArray); 330b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru} 331b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste Queru 332b13da9df870a61b11249bf741347908dbea0edd8Jean-Baptiste QueruU_NAMESPACE_END 333