/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ /* * TrueTypeCreator method implementation */ #include #include #include #include "ttcr.hxx" #include "list.h" #include namespace vcl { /* * Private Data Types */ struct TrueTypeCreator { sal_uInt32 tag; /**< TrueType file tag */ list tables; /**< List of table tags and pointers */ }; namespace { struct TableEntry { sal_uInt32 tag; sal_uInt32 length; sal_uInt8 *data; }; } /*- Data access macros for data stored in big-endian or little-endian format */ static sal_Int16 GetInt16( const sal_uInt8* ptr, sal_uInt32 offset) { assert(ptr != nullptr); sal_Int16 t = (ptr+offset)[0] << 8 | (ptr+offset)[1]; return t; } static sal_uInt16 GetUInt16( const sal_uInt8* ptr, sal_uInt32 offset) { assert(ptr != nullptr); sal_uInt16 t = (ptr+offset)[0] << 8 | (ptr+offset)[1]; return t; } static void PutInt16(sal_Int16 val, sal_uInt8 *ptr, sal_uInt32 offset) { assert(ptr != nullptr); ptr[offset] = static_cast((val >> 8) & 0xFF); ptr[offset+1] = static_cast(val & 0xFF); } static void PutUInt16(sal_uInt16 val, sal_uInt8 *ptr, sal_uInt32 offset) { assert(ptr != nullptr); ptr[offset] = static_cast((val >> 8) & 0xFF); ptr[offset+1] = static_cast(val & 0xFF); } static void PutUInt32(sal_uInt32 val, sal_uInt8 *ptr, sal_uInt32 offset) { assert(ptr != nullptr); ptr[offset] = static_cast((val >> 24) & 0xFF); ptr[offset+1] = static_cast((val >> 16) & 0xFF); ptr[offset+2] = static_cast((val >> 8) & 0xFF); ptr[offset+3] = static_cast(val & 0xFF); } static int TableEntryCompareF(const void *l, const void *r) { sal_uInt32 const ltag(static_cast(l)->tag); sal_uInt32 const rtag(static_cast(r)->tag); return (ltag == rtag) ? 0 : (ltag < rtag) ? -1 : 1; } static int NameRecordCompareF(const void *l, const void *r) { NameRecord const *ll = static_cast(l); NameRecord const *rr = static_cast(r); if (ll->platformID != rr->platformID) { return (ll->platformID < rr->platformID) ? -1 : 1; } else if (ll->encodingID != rr->encodingID) { return (ll->encodingID < rr->encodingID) ? -1 : 1; } else if (ll->languageID != rr->languageID) { return (ll->languageID < rr->languageID) ? -1 : 1; } else if (ll->nameID != rr->nameID) { return (ll->nameID < rr->nameID) ? -1 : 1; } return 0; } static sal_uInt32 CheckSum(sal_uInt32 *ptr, sal_uInt32 length) { sal_uInt32 sum = 0; sal_uInt32 *endptr = ptr + ((length + 3) & sal_uInt32(~3)) / 4; while (ptr < endptr) sum += *ptr++; return sum; } static void *smalloc(sal_uInt32 size) { void *res = malloc(size); assert(res != nullptr); return res; } static void *scalloc(sal_uInt32 n, sal_uInt32 size) { void *res = calloc(n, size); assert(res != nullptr); return res; } /* * Public functions */ void TrueTypeCreatorNewEmpty(sal_uInt32 tag, TrueTypeCreator **_this) { TrueTypeCreator* ptr = static_cast(smalloc(sizeof(TrueTypeCreator))); ptr->tables = listNewEmpty(); listSetElementDtor(ptr->tables, TrueTypeTableDispose); ptr->tag = tag; *_this = ptr; } void AddTable(TrueTypeCreator *_this, TrueTypeTable *table) { if (table != nullptr) { listAppend(_this->tables, table); } } void RemoveTable(TrueTypeCreator *_this, sal_uInt32 tag) { if (listCount(_this->tables)) { listToFirst(_this->tables); int done = 0; do { if (static_cast(listCurrent(_this->tables))->tag == tag) { listRemove(_this->tables); } else { if (listNext(_this->tables)) { done = 1; } } } while (!done); } } static void ProcessTables(TrueTypeCreator *); SFErrCodes StreamToMemory(TrueTypeCreator *_this, sal_uInt8 **ptr, sal_uInt32 *length) { sal_uInt16 searchRange=1, entrySelector=0, rangeShift; sal_uInt32 s, offset, checkSumAdjustment = 0; sal_uInt32 *p; sal_uInt8 *head = nullptr; /* saved pointer to the head table data for checkSumAdjustment calculation */ if (listIsEmpty(_this->tables)) return SFErrCodes::TtFormat; ProcessTables(_this); /* ProcessTables() adds 'loca' and 'hmtx' */ sal_uInt16 numTables = listCount(_this->tables); TableEntry* te = static_cast(scalloc(numTables, sizeof(TableEntry))); TableEntry* e = te; listToFirst(_this->tables); do { GetRawData(static_cast(listCurrent(_this->tables)), &e->data, &e->length, &e->tag); ++e; } while (listNext(_this->tables)); qsort(te, numTables, sizeof(TableEntry), TableEntryCompareF); do { searchRange *= 2; entrySelector++; } while (searchRange <= numTables); searchRange *= 8; entrySelector--; rangeShift = numTables * 16 - searchRange; s = offset = 12 + 16 * numTables; for (int i = 0; i < numTables; ++i) { s += (te[i].length + 3) & sal_uInt32(~3); /* if ((te[i].length & 3) != 0) s += (4 - (te[i].length & 3)) & 3; */ } sal_uInt8* ttf = static_cast(smalloc(s)); /* Offset Table */ PutUInt32(_this->tag, ttf, 0); PutUInt16(numTables, ttf, 4); PutUInt16(searchRange, ttf, 6); PutUInt16(entrySelector, ttf, 8); PutUInt16(rangeShift, ttf, 10); /* Table Directory */ for (int i = 0; i < numTables; ++i) { PutUInt32(te[i].tag, ttf + 12, 16 * i); PutUInt32(CheckSum(reinterpret_cast(te[i].data), te[i].length), ttf + 12, 16 * i + 4); PutUInt32(offset, ttf + 12, 16 * i + 8); PutUInt32(te[i].length, ttf + 12, 16 * i + 12); if (te[i].tag == T_head) { head = ttf + offset; } memcpy(ttf+offset, te[i].data, (te[i].length + 3) & sal_uInt32(~3) ); offset += (te[i].length + 3) & sal_uInt32(~3); /* if ((te[i].length & 3) != 0) offset += (4 - (te[i].length & 3)) & 3; */ } free(te); p = reinterpret_cast(ttf); for (int i = 0; i < static_cast(s) / 4; ++i) checkSumAdjustment += p[i]; PutUInt32(0xB1B0AFBA - checkSumAdjustment, head, 8); *ptr = ttf; *length = s; return SFErrCodes::Ok; } SFErrCodes StreamToFile(TrueTypeCreator *_this, const char* fname) { sal_uInt8 *ptr; sal_uInt32 length; SFErrCodes r; FILE* fd; if ((r = StreamToMemory(_this, &ptr, &length)) != SFErrCodes::Ok) return r; r = SFErrCodes::BadFile; if (fname) { fd = fopen(fname, "wb"); if (fd) { if (fwrite(ptr, 1, length, fd) != length) { r = SFErrCodes::FileIo; } else { r = SFErrCodes::Ok; } fclose(fd); } } free(ptr); return r; } /* * TrueTypeTable private methods */ /* Table data points to * -------------------------------------------- * generic tdata_generic struct * 'head' HEAD_Length bytes of memory * 'hhea' HHEA_Length bytes of memory * 'loca' tdata_loca struct * 'maxp' MAXP_Version1Length bytes of memory * 'glyf' list of GlyphData structs (defined in sft.h) * 'name' list of NameRecord structs (defined in sft.h) * 'post' tdata_post struct * */ #define CMAP_SUBTABLE_INIT 10 #define CMAP_SUBTABLE_INCR 10 #define CMAP_PAIR_INIT 500 #define CMAP_PAIR_INCR 500 namespace { struct CmapSubTable { sal_uInt32 id; /* subtable ID (platform/encoding ID) */ sal_uInt32 n; /* number of used translation pairs */ sal_uInt32 m; /* number of allocated translation pairs */ sal_uInt32 *xc; /* character array */ sal_uInt32 *xg; /* glyph array */ }; struct table_cmap { sal_uInt32 n; /* number of used CMAP sub-tables */ sal_uInt32 m; /* number of allocated CMAP sub-tables */ CmapSubTable *s; /* sorted array of sub-tables */ }; struct tdata_generic { sal_uInt32 tag; sal_uInt32 nbytes; sal_uInt8 *ptr; }; struct tdata_loca { sal_uInt32 nbytes; /* number of bytes in loca table */ sal_uInt8 *ptr; /* pointer to the data */ }; struct tdata_post { sal_uInt32 format; sal_uInt32 italicAngle; sal_Int16 underlinePosition; sal_Int16 underlineThickness; sal_uInt32 isFixedPitch; void *ptr; /* format-specific pointer */ }; } /* allocate memory for a TT table */ static sal_uInt8 *ttmalloc(sal_uInt32 nbytes) { sal_uInt32 n; n = (nbytes + 3) & sal_uInt32(~3); sal_uInt8* res = static_cast(calloc(n, 1)); assert(res != nullptr); return res; } static void FreeGlyphData(void *ptr) { GlyphData *p = static_cast(ptr); if (p->ptr) free(p->ptr); free(p); } static void TrueTypeTableDispose_generic(TrueTypeTable *_this) { if (_this) { if (_this->data) { tdata_generic *pdata = static_cast(_this->data); if (pdata->nbytes) free(pdata->ptr); free(_this->data); } free(_this); } } static void TrueTypeTableDispose_head(TrueTypeTable *_this) { if (_this) { if (_this->data) free(_this->data); free(_this); } } static void TrueTypeTableDispose_hhea(TrueTypeTable *_this) { if (_this) { if (_this->data) free(_this->data); free(_this); } } static void TrueTypeTableDispose_loca(TrueTypeTable *_this) { if (_this) { if (_this->data) { tdata_loca *p = static_cast(_this->data); if (p->ptr) free(p->ptr); free(_this->data); } free(_this); } } static void TrueTypeTableDispose_maxp(TrueTypeTable *_this) { if (_this) { if (_this->data) free(_this->data); free(_this); } } static void TrueTypeTableDispose_glyf(TrueTypeTable *_this) { if (_this) { if (_this->data) listDispose(static_cast(_this->data)); free(_this); } } static void TrueTypeTableDispose_cmap(TrueTypeTable *_this) { if (_this) { table_cmap *t = static_cast(_this->data); if (t) { CmapSubTable *s = t->s; if (s) { for (sal_uInt32 i = 0; i < t->m; i++) { if (s[i].xc) free(s[i].xc); if (s[i].xg) free(s[i].xg); } free(s); } free(t); } free(_this); } } static void TrueTypeTableDispose_name(TrueTypeTable *_this) { if (_this) { if (_this->data) listDispose(static_cast(_this->data)); free(_this); } } static void TrueTypeTableDispose_post(TrueTypeTable *_this) { if (_this) { tdata_post *p = static_cast(_this->data); if (p) { if (p->format == 0x00030000) { /* do nothing */ } else { SAL_WARN("vcl.fonts", "Unsupported format of a 'post' table: " << std::setfill('0') << std::setw(8) << std::hex << std::uppercase << static_cast(p->format) << "."); } free(p); } free(_this); } } /* destructor vtable */ static struct { sal_uInt32 tag; void (*f)(TrueTypeTable *); } const vtable1[] = { {0, TrueTypeTableDispose_generic}, {T_head, TrueTypeTableDispose_head}, {T_hhea, TrueTypeTableDispose_hhea}, {T_loca, TrueTypeTableDispose_loca}, {T_maxp, TrueTypeTableDispose_maxp}, {T_glyf, TrueTypeTableDispose_glyf}, {T_cmap, TrueTypeTableDispose_cmap}, {T_name, TrueTypeTableDispose_name}, {T_post, TrueTypeTableDispose_post} }; static int GetRawData_generic(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { assert(_this != nullptr); assert(_this->data != nullptr); *ptr = static_cast(_this->data)->ptr; *len = static_cast(_this->data)->nbytes; *tag = static_cast(_this->data)->tag; return TTCR_OK; } static int GetRawData_head(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { *len = HEAD_Length; *ptr = static_cast(_this->data); *tag = T_head; return TTCR_OK; } static int GetRawData_hhea(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { *len = HHEA_Length; *ptr = static_cast(_this->data); *tag = T_hhea; return TTCR_OK; } static int GetRawData_loca(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { tdata_loca *p; assert(_this->data != nullptr); p = static_cast(_this->data); if (p->nbytes == 0) return TTCR_ZEROGLYPHS; *ptr = p->ptr; *len = p->nbytes; *tag = T_loca; return TTCR_OK; } static int GetRawData_maxp(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { *len = MAXP_Version1Length; *ptr = static_cast(_this->data); *tag = T_maxp; return TTCR_OK; } static int GetRawData_glyf(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { sal_uInt32 n, nbytes = 0; list l = static_cast(_this->data); /* sal_uInt16 curID = 0; */ /* to check if glyph IDs are sequential and start from zero */ sal_uInt8 *p; *ptr = nullptr; *len = 0; *tag = 0; if (listCount(l) == 0) return TTCR_ZEROGLYPHS; listToFirst(l); do { /* if (((GlyphData *) listCurrent(l))->glyphID != curID++) return TTCR_GLYPHSEQ; */ nbytes += static_cast(listCurrent(l))->nbytes; } while (listNext(l)); p = _this->rawdata = ttmalloc(nbytes); listToFirst(l); do { n = static_cast(listCurrent(l))->nbytes; if (n != 0) { memcpy(p, static_cast(listCurrent(l))->ptr, n); p += n; } } while (listNext(l)); *len = nbytes; *ptr = _this->rawdata; *tag = T_glyf; return TTCR_OK; } /* cmap packers */ static sal_uInt8 *PackCmapType0(CmapSubTable const *s, sal_uInt32 *length) { sal_uInt8* ptr = static_cast(smalloc(262)); sal_uInt8 *p = ptr + 6; sal_uInt32 i, j; sal_uInt16 g; PutUInt16(0, ptr, 0); PutUInt16(262, ptr, 2); PutUInt16(0, ptr, 4); for (i = 0; i < 256; i++) { g = 0; for (j = 0; j < s->n; j++) { if (s->xc[j] == i) { g = static_cast(s->xg[j]); } } p[i] = static_cast(g); } *length = 262; return ptr; } static sal_uInt8 *PackCmapType6(CmapSubTable const *s, sal_uInt32 *length) { sal_uInt8* ptr = static_cast(smalloc(s->n*2 + 10)); sal_uInt8 *p = ptr + 10; sal_uInt32 i, j; sal_uInt16 g; PutUInt16(6, ptr, 0); PutUInt16(static_cast(s->n*2+10), ptr, 2); PutUInt16(0, ptr, 4); PutUInt16(0, ptr, 6); PutUInt16(static_cast(s->n), ptr, 8 ); for (i = 0; i < s->n; i++) { g = 0; for (j = 0; j < s->n; j++) { if (s->xc[j] == i) { g = static_cast(s->xg[j]); } } PutUInt16( g, p, 2*i ); } *length = s->n*2+10; return ptr; } /* XXX it only handles Format 0 encoding tables */ static sal_uInt8 *PackCmap(CmapSubTable const *s, sal_uInt32 *length) { if( s->xg[s->n-1] > 0xff ) return PackCmapType6(s, length); else return PackCmapType0(s, length); } static int GetRawData_cmap(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { table_cmap *t; sal_uInt32 i; sal_uInt32 tlen = 0; sal_uInt32 l; sal_uInt32 cmapsize; sal_uInt8 *cmap; sal_uInt32 coffset; assert(_this != nullptr); t = static_cast(_this->data); assert(t != nullptr); assert(t->n != 0); sal_uInt8** subtables = static_cast(scalloc(t->n, sizeof(sal_uInt8 *))); sal_uInt32* sizes = static_cast(scalloc(t->n, sizeof(sal_uInt32))); for (i = 0; i < t->n; i++) { subtables[i] = PackCmap(t->s+i, &l); sizes[i] = l; tlen += l; } cmapsize = tlen + 4 + 8 * t->n; _this->rawdata = cmap = ttmalloc(cmapsize); PutUInt16(0, cmap, 0); PutUInt16(static_cast(t->n), cmap, 2); coffset = 4 + t->n * 8; for (i = 0; i < t->n; i++) { PutUInt16(static_cast(t->s[i].id >> 16), cmap + 4, i * 8); PutUInt16(static_cast(t->s[i].id & 0xFF), cmap + 4, 2 + i * 8); PutUInt32(coffset, cmap + 4, 4 + i * 8); memcpy(cmap + coffset, subtables[i], sizes[i]); free(subtables[i]); coffset += sizes[i]; } free(subtables); free(sizes); *ptr = cmap; *len = cmapsize; *tag = T_cmap; return TTCR_OK; } static int GetRawData_name(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { list l; sal_Int16 i=0, n; /* number of Name Records */ int stringLen = 0; sal_uInt8 *p1, *p2; *ptr = nullptr; *len = 0; *tag = 0; assert(_this != nullptr); l = static_cast(_this->data); assert(l != nullptr); if ((n = static_cast(listCount(l))) == 0) return TTCR_NONAMES; NameRecord* nr = static_cast(scalloc(n, sizeof(NameRecord))); listToFirst(l); do { memcpy(nr+i, listCurrent(l), sizeof(NameRecord)); stringLen += nr[i].slen; i++; } while (listNext(l)); if (stringLen > 65535) { free(nr); return TTCR_NAMETOOLONG; } qsort(nr, n, sizeof(NameRecord), NameRecordCompareF); int nameLen = stringLen + 12 * n + 6; sal_uInt8* name = ttmalloc(nameLen); PutUInt16(0, name, 0); PutUInt16(n, name, 2); PutUInt16(static_cast(6 + 12 * n), name, 4); p1 = name + 6; p2 = p1 + 12 * n; for (i = 0; i < n; i++) { PutUInt16(nr[i].platformID, p1, 0); PutUInt16(nr[i].encodingID, p1, 2); PutUInt16(static_cast(nr[i].languageID), p1, 4); PutUInt16(nr[i].nameID, p1, 6); PutUInt16(nr[i].slen, p1, 8); PutUInt16(static_cast(p2 - (name + 6 + 12 * n)), p1, 10); if (nr[i].slen) { memcpy(p2, nr[i].sptr, nr[i].slen); } /* {int j; for(j=0; jrawdata = name; *ptr = name; *len = static_cast(nameLen); *tag = T_name; /*{int j; for(j=0; j(_this->data); sal_uInt8 *post = nullptr; sal_uInt32 postLen = 0; int ret; if (_this->rawdata) free(_this->rawdata); if (p->format == 0x00030000) { postLen = 32; post = ttmalloc(postLen); PutUInt32(0x00030000, post, 0); PutUInt32(p->italicAngle, post, 4); PutUInt16(p->underlinePosition, post, 8); PutUInt16(p->underlineThickness, post, 10); PutUInt16(static_cast(p->isFixedPitch), post, 12); ret = TTCR_OK; } else { SAL_WARN("vcl.fonts", "Unrecognized format of a post table: " << std::setfill('0') << std::setw(8) << std::hex << std::uppercase << static_cast(p->format) << "."); ret = TTCR_POSTFORMAT; } *ptr = _this->rawdata = post; *len = postLen; *tag = T_post; return ret; } static struct { sal_uInt32 tag; int (*f)(TrueTypeTable *, sal_uInt8 **, sal_uInt32 *, sal_uInt32 *); } const vtable2[] = { {0, GetRawData_generic}, {T_head, GetRawData_head}, {T_hhea, GetRawData_hhea}, {T_loca, GetRawData_loca}, {T_maxp, GetRawData_maxp}, {T_glyf, GetRawData_glyf}, {T_cmap, GetRawData_cmap}, {T_name, GetRawData_name}, {T_post, GetRawData_post} }; /* * TrueTypeTable public methods */ /* Note: Type42 fonts only need these tables: * head, hhea, loca, maxp, cvt, prep, glyf, hmtx, fpgm * * Microsoft required tables * cmap, glyf, head, hhea, hmtx, loca, maxp, name, post, OS/2 * * Apple required tables * cmap, glyf, head, hhea, hmtx, loca, maxp, name, post * */ TrueTypeTable *TrueTypeTableNew(sal_uInt32 tag, sal_uInt32 nbytes, const sal_uInt8* ptr) { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); tdata_generic* pdata = static_cast(smalloc(sizeof(tdata_generic))); pdata->nbytes = nbytes; pdata->tag = tag; if (nbytes) { pdata->ptr = ttmalloc(nbytes); memcpy(pdata->ptr, ptr, nbytes); } else { pdata->ptr = nullptr; } table->tag = 0; table->data = pdata; table->rawdata = nullptr; return table; } TrueTypeTable *TrueTypeTableNew_head(sal_uInt32 fontRevision, sal_uInt16 flags, sal_uInt16 unitsPerEm, const sal_uInt8* created, sal_uInt16 macStyle, sal_uInt16 lowestRecPPEM, sal_Int16 fontDirectionHint) { assert(created != nullptr); TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); sal_uInt8* ptr = ttmalloc(HEAD_Length); PutUInt32(0x00010000, ptr, 0); /* version */ PutUInt32(fontRevision, ptr, 4); PutUInt32(0x5F0F3CF5, ptr, 12); /* magic number */ PutUInt16(flags, ptr, 16); PutUInt16(unitsPerEm, ptr, 18); memcpy(ptr+20, created, 8); /* Created Long Date */ memset(ptr+28, 0, 8); /* Modified Long Date */ PutUInt16(macStyle, ptr, 44); PutUInt16(lowestRecPPEM, ptr, 46); PutUInt16(fontDirectionHint, ptr, 48); PutUInt16(0, ptr, 52); /* glyph data format: 0 */ table->data = static_cast(ptr); table->tag = T_head; table->rawdata = nullptr; return table; } TrueTypeTable *TrueTypeTableNew_hhea(sal_Int16 ascender, sal_Int16 descender, sal_Int16 linegap, sal_Int16 caretSlopeRise, sal_Int16 caretSlopeRun) { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); sal_uInt8* ptr = ttmalloc(HHEA_Length); PutUInt32(0x00010000, ptr, 0); /* version */ PutUInt16(ascender, ptr, 4); PutUInt16(descender, ptr, 6); PutUInt16(linegap, ptr, 8); PutUInt16(caretSlopeRise, ptr, 18); PutUInt16(caretSlopeRun, ptr, 20); PutUInt16(0, ptr, 22); /* reserved 1 */ PutUInt16(0, ptr, 24); /* reserved 2 */ PutUInt16(0, ptr, 26); /* reserved 3 */ PutUInt16(0, ptr, 28); /* reserved 4 */ PutUInt16(0, ptr, 30); /* reserved 5 */ PutUInt16(0, ptr, 32); /* metricDataFormat */ table->data = static_cast(ptr); table->tag = T_hhea; table->rawdata = nullptr; return table; } TrueTypeTable *TrueTypeTableNew_loca() { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); table->data = smalloc(sizeof(tdata_loca)); static_cast(table->data)->nbytes = 0; static_cast(table->data)->ptr = nullptr; table->tag = T_loca; table->rawdata = nullptr; return table; } TrueTypeTable *TrueTypeTableNew_maxp( const sal_uInt8* maxp, int size) { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); table->data = ttmalloc(MAXP_Version1Length); if (maxp && size == MAXP_Version1Length) { memcpy(table->data, maxp, MAXP_Version1Length); } table->tag = T_maxp; table->rawdata = nullptr; return table; } TrueTypeTable *TrueTypeTableNew_glyf() { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); list l = listNewEmpty(); assert(l != nullptr); listSetElementDtor(l, FreeGlyphData); table->data = l; table->rawdata = nullptr; table->tag = T_glyf; return table; } TrueTypeTable *TrueTypeTableNew_cmap() { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); table_cmap* cmap = static_cast(smalloc(sizeof(table_cmap))); cmap->n = 0; cmap->m = CMAP_SUBTABLE_INIT; cmap->s = static_cast(scalloc(CMAP_SUBTABLE_INIT, sizeof(CmapSubTable))); table->data = cmap; table->rawdata = nullptr; table->tag = T_cmap; return table; } static void DisposeNameRecord(void *ptr) { if (ptr != nullptr) { NameRecord *nr = static_cast(ptr); if (nr->sptr) free(nr->sptr); free(ptr); } } static NameRecord* NameRecordNewCopy(NameRecord const *nr) { NameRecord* p = static_cast(smalloc(sizeof(NameRecord))); memcpy(p, nr, sizeof(NameRecord)); if (p->slen) { p->sptr = static_cast(smalloc(p->slen)); memcpy(p->sptr, nr->sptr, p->slen); } return p; } TrueTypeTable *TrueTypeTableNew_name(int n, NameRecord const *nr) { TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); list l = listNewEmpty(); assert(l != nullptr); listSetElementDtor(l, DisposeNameRecord); if (n != 0) { int i; for (i = 0; i < n; i++) { listAppend(l, NameRecordNewCopy(nr+i)); } } table->data = l; table->rawdata = nullptr; table->tag = T_name; return table; } TrueTypeTable *TrueTypeTableNew_post(sal_Int32 format, sal_Int32 italicAngle, sal_Int16 underlinePosition, sal_Int16 underlineThickness, sal_uInt32 isFixedPitch) { assert(format == 0x00030000); /* Only format 3.0 is supported at this time */ TrueTypeTable* table = static_cast(smalloc(sizeof(TrueTypeTable))); tdata_post* post = static_cast(smalloc(sizeof(tdata_post))); post->format = format; post->italicAngle = italicAngle; post->underlinePosition = underlinePosition; post->underlineThickness = underlineThickness; post->isFixedPitch = isFixedPitch; post->ptr = nullptr; table->data = post; table->rawdata = nullptr; table->tag = T_post; return table; } int GetRawData(TrueTypeTable *_this, sal_uInt8 **ptr, sal_uInt32 *len, sal_uInt32 *tag) { /* XXX do a binary search */ assert(_this != nullptr); assert(ptr != nullptr); assert(len != nullptr); assert(tag != nullptr); *ptr = nullptr; *len = 0; *tag = 0; if (_this->rawdata) { free(_this->rawdata); _this->rawdata = nullptr; } for(size_t i=0; i < SAL_N_ELEMENTS(vtable2); i++) { if (_this->tag == vtable2[i].tag) { return vtable2[i].f(_this, ptr, len, tag); } } assert(!"Unknown TrueType table."); return TTCR_UNKNOWN; } void cmapAdd(TrueTypeTable *table, sal_uInt32 id, sal_uInt32 c, sal_uInt32 g) { sal_uInt32 i, found; table_cmap *t; CmapSubTable *s; assert(table != nullptr); assert(table->tag == T_cmap); t = static_cast(table->data); assert(t != nullptr); s = t->s; assert(s != nullptr); found = 0; for (i = 0; i < t->n; i++) { if (s[i].id == id) { found = 1; break; } } if (!found) { if (t->n == t->m) { CmapSubTable* tmp = static_cast(scalloc(t->m + CMAP_SUBTABLE_INCR, sizeof(CmapSubTable))); memcpy(tmp, s, sizeof(CmapSubTable) * t->m); t->m += CMAP_SUBTABLE_INCR; free(s); s = tmp; t->s = s; } for (i = 0; i < t->n; i++) { if (s[i].id > id) break; } if (i < t->n) { memmove(s+i+1, s+i, t->n-i); } t->n++; s[i].id = id; s[i].n = 0; s[i].m = CMAP_PAIR_INIT; s[i].xc = static_cast(scalloc(CMAP_PAIR_INIT, sizeof(sal_uInt32))); s[i].xg = static_cast(scalloc(CMAP_PAIR_INIT, sizeof(sal_uInt32))); } if (s[i].n == s[i].m) { sal_uInt32* tmp1 = static_cast(scalloc(s[i].m + CMAP_PAIR_INCR, sizeof(sal_uInt32))); sal_uInt32* tmp2 = static_cast(scalloc(s[i].m + CMAP_PAIR_INCR, sizeof(sal_uInt32))); assert(tmp1 != nullptr); assert(tmp2 != nullptr); memcpy(tmp1, s[i].xc, sizeof(sal_uInt32) * s[i].m); memcpy(tmp2, s[i].xg, sizeof(sal_uInt32) * s[i].m); s[i].m += CMAP_PAIR_INCR; free(s[i].xc); free(s[i].xg); s[i].xc = tmp1; s[i].xg = tmp2; } s[i].xc[s[i].n] = c; s[i].xg[s[i].n] = g; s[i].n++; } sal_uInt32 glyfAdd(TrueTypeTable *table, GlyphData *glyphdata, TrueTypeFont *fnt) { list l; sal_uInt32 currentID; int ret, n, ncomponents; assert(table != nullptr); assert(table->tag == T_glyf); if (!glyphdata) return sal_uInt32(~0); std::vector< sal_uInt32 > glyphlist; ncomponents = GetTTGlyphComponents(fnt, glyphdata->glyphID, glyphlist); l = static_cast(table->data); if (listCount(l) > 0) { listToLast(l); ret = n = static_cast(listCurrent(l))->newID + 1; } else { ret = n = 0; } glyphdata->newID = n++; listAppend(l, glyphdata); if (ncomponents > 1 && glyphlist.size() > 1 ) { std::vector< sal_uInt32 >::const_iterator it = glyphlist.begin(); ++it; /* glyphData->glyphID is always the first glyph on the list */ do { int found = 0; currentID = *it; /* XXX expensive! should be rewritten with sorted arrays! */ listToFirst(l); do { if (static_cast(listCurrent(l))->glyphID == currentID) { found = 1; break; } } while (listNext(l)); if (!found) { GlyphData *gd = GetTTRawGlyphData(fnt, currentID); gd->newID = n++; listAppend(l, gd); } } while( ++it != glyphlist.end() ); } return ret; } sal_uInt32 glyfCount(const TrueTypeTable *table) { assert(table != nullptr); assert(table->tag == T_glyf); return listCount(static_cast(table->data)); } static TrueTypeTable *FindTable(TrueTypeCreator *tt, sal_uInt32 tag) { if (listIsEmpty(tt->tables)) return nullptr; listToFirst(tt->tables); do { if (static_cast(listCurrent(tt->tables))->tag == tag) { return static_cast(listCurrent(tt->tables)); } } while (listNext(tt->tables)); return nullptr; } /* This function processes all the tables and synchronizes them before creating * the output TrueType stream. * * *** It adds two TrueType tables to the font: 'loca' and 'hmtx' *** * * It does: * * - Re-numbers glyph IDs and creates 'glyf', 'loca', and 'hmtx' tables. * - Calculates xMin, yMin, xMax, and yMax and stores values in 'head' table. * - Stores indexToLocFormat in 'head' * - updates 'maxp' table * - Calculates advanceWidthMax, minLSB, minRSB, xMaxExtent and numberOfHMetrics * in 'hhea' table * */ static void ProcessTables(TrueTypeCreator *tt) { TrueTypeTable *glyf, *loca, *head, *maxp, *hhea; list glyphlist; sal_uInt32 nGlyphs, locaLen = 0, glyfLen = 0; sal_Int16 xMin = 0, yMin = 0, xMax = 0, yMax = 0; sal_uInt32 i = 0; sal_Int16 indexToLocFormat; sal_uInt8 *hmtxPtr, *hheaPtr; sal_uInt32 hmtxSize; sal_uInt8 *p1, *p2; sal_uInt16 maxPoints = 0, maxContours = 0, maxCompositePoints = 0, maxCompositeContours = 0; int nlsb = 0; sal_uInt32 *gid; /* array of old glyphIDs */ glyf = FindTable(tt, T_glyf); glyphlist = static_cast(glyf->data); nGlyphs = listCount(glyphlist); assert(nGlyphs != 0); gid = static_cast(scalloc(nGlyphs, sizeof(sal_uInt32))); RemoveTable(tt, T_loca); RemoveTable(tt, T_hmtx); /* XXX Need to make sure that composite glyphs do not break during glyph renumbering */ listToFirst(glyphlist); do { GlyphData *gd = static_cast(listCurrent(glyphlist)); sal_Int16 z; glyfLen += gd->nbytes; /* XXX if (gd->nbytes & 1) glyfLen++; */ assert(gd->newID == i); gid[i++] = gd->glyphID; /* gd->glyphID = i++; */ /* printf("IDs: %d %d.\n", gd->glyphID, gd->newID); */ if (gd->nbytes != 0) { z = GetInt16(gd->ptr, 2); if (z < xMin) xMin = z; z = GetInt16(gd->ptr, 4); if (z < yMin) yMin = z; z = GetInt16(gd->ptr, 6); if (z > xMax) xMax = z; z = GetInt16(gd->ptr, 8); if (z > yMax) yMax = z; } if (!gd->compflag) { /* non-composite glyph */ if (gd->npoints > maxPoints) maxPoints = gd->npoints; if (gd->ncontours > maxContours) maxContours = gd->ncontours; } else { /* composite glyph */ if (gd->npoints > maxCompositePoints) maxCompositePoints = gd->npoints; if (gd->ncontours > maxCompositeContours) maxCompositeContours = gd->ncontours; } } while (listNext(glyphlist)); indexToLocFormat = (glyfLen / 2 > 0xFFFF) ? 1 : 0; locaLen = indexToLocFormat ? (nGlyphs + 1) << 2 : (nGlyphs + 1) << 1; sal_uInt8* glyfPtr = ttmalloc(glyfLen); sal_uInt8* locaPtr = ttmalloc(locaLen); TTSimpleGlyphMetrics* met = static_cast(scalloc(nGlyphs, sizeof(TTSimpleGlyphMetrics))); i = 0; listToFirst(glyphlist); p1 = glyfPtr; p2 = locaPtr; do { GlyphData *gd = static_cast(listCurrent(glyphlist)); if (gd->compflag) { /* re-number all components */ sal_uInt16 flags, index; sal_uInt8 *ptr = gd->ptr + 10; do { sal_uInt32 j; flags = GetUInt16(ptr, 0); index = GetUInt16(ptr, 2); /* XXX use the sorted array of old to new glyphID mapping and do a binary search */ for (j = 0; j < nGlyphs; j++) { if (gid[j] == index) { break; } } /* printf("X: %d -> %d.\n", index, j); */ PutUInt16(static_cast(j), ptr, 2); ptr += 4; if (flags & ARG_1_AND_2_ARE_WORDS) { ptr += 4; } else { ptr += 2; } if (flags & WE_HAVE_A_SCALE) { ptr += 2; } else if (flags & WE_HAVE_AN_X_AND_Y_SCALE) { ptr += 4; } else if (flags & WE_HAVE_A_TWO_BY_TWO) { ptr += 8; } } while (flags & MORE_COMPONENTS); } if (gd->nbytes != 0) { memcpy(p1, gd->ptr, gd->nbytes); } if (indexToLocFormat == 1) { PutUInt32(p1 - glyfPtr, p2, 0); p2 += 4; } else { PutUInt16(static_cast((p1 - glyfPtr) >> 1), p2, 0); p2 += 2; } p1 += gd->nbytes; /* fill the array of metrics */ met[i].adv = gd->aw; met[i].sb = gd->lsb; i++; } while (listNext(glyphlist)); free(gid); if (indexToLocFormat == 1) { PutUInt32(p1 - glyfPtr, p2, 0); } else { PutUInt16(static_cast((p1 - glyfPtr) >> 1), p2, 0); } glyf->rawdata = glyfPtr; loca = TrueTypeTableNew_loca(); assert(loca != nullptr); static_cast(loca->data)->ptr = locaPtr; static_cast(loca->data)->nbytes = locaLen; AddTable(tt, loca); head = FindTable(tt, T_head); sal_uInt8* const pHeadData = static_cast(head->data); PutInt16(xMin, pHeadData, HEAD_xMin_offset); PutInt16(yMin, pHeadData, HEAD_yMin_offset); PutInt16(xMax, pHeadData, HEAD_xMax_offset); PutInt16(yMax, pHeadData, HEAD_yMax_offset); PutInt16(indexToLocFormat, pHeadData, HEAD_indexToLocFormat_offset); maxp = FindTable(tt, T_maxp); sal_uInt8* const pMaxpData = static_cast(maxp->data); PutUInt16(static_cast(nGlyphs), pMaxpData, MAXP_numGlyphs_offset); PutUInt16(maxPoints, pMaxpData, MAXP_maxPoints_offset); PutUInt16(maxContours, pMaxpData, MAXP_maxContours_offset); PutUInt16(maxCompositePoints, pMaxpData, MAXP_maxCompositePoints_offset); PutUInt16(maxCompositeContours, pMaxpData, MAXP_maxCompositeContours_offset); /* * Generate an htmx table and update hhea table */ hhea = FindTable(tt, T_hhea); assert(hhea != nullptr); hheaPtr = static_cast(hhea->data); if (nGlyphs > 2) { for (i = nGlyphs - 1; i > 0; i--) { if (met[i].adv != met[i-1].adv) break; } nlsb = nGlyphs - 1 - i; } hmtxSize = (nGlyphs - nlsb) * 4 + nlsb * 2; hmtxPtr = ttmalloc(hmtxSize); p1 = hmtxPtr; for (i = 0; i < nGlyphs; i++) { if (i < nGlyphs - nlsb) { PutUInt16(met[i].adv, p1, 0); PutUInt16(met[i].sb, p1, 2); p1 += 4; } else { PutUInt16(met[i].sb, p1, 0); p1 += 2; } } AddTable(tt, TrueTypeTableNew(T_hmtx, hmtxSize, hmtxPtr)); PutUInt16(static_cast(nGlyphs - nlsb), hheaPtr, 34); free(hmtxPtr); free(met); } } // namespace vcl extern "C" { /** * TrueTypeCreator destructor. It calls destructors for all TrueTypeTables added to it. */ void TrueTypeCreatorDispose(vcl::TrueTypeCreator *_this) { listDispose(_this->tables); free(_this); } /** * Destructor for the TrueTypeTable object. */ void TrueTypeTableDispose(void * arg) { vcl::TrueTypeTable *_this = static_cast(arg); /* XXX do a binary search */ assert(_this != nullptr); if (_this->rawdata) free(_this->rawdata); for(size_t i=0; i < SAL_N_ELEMENTS(vcl::vtable1); i++) { if (_this->tag == vcl::vtable1[i].tag) { vcl::vtable1[i].f(_this); return; } } assert(!"Unknown TrueType table."); } } #ifdef TEST_TTCR static sal_uInt32 mkTag(sal_uInt8 a, sal_uInt8 b, sal_uInt8 c, sal_uInt8 d) { return (a << 24) | (b << 16) | (c << 8) | d; } int main() { TrueTypeCreator *ttcr; sal_uInt8 *t1, *t2, *t3, *t4, *t5, *t6; TrueTypeCreatorNewEmpty(mkTag('t','r','u','e'), &ttcr); t1 = malloc(1000); memset(t1, 'a', 1000); t2 = malloc(2000); memset(t2, 'b', 2000); t3 = malloc(3000); memset(t3, 'c', 3000); t4 = malloc(4000); memset(t4, 'd', 4000); t5 = malloc(5000); memset(t5, 'e', 5000); t6 = malloc(6000); memset(t6, 'f', 6000); AddTable(ttcr, TrueTypeTableNew(T_maxp, 1000, t1)); AddTable(ttcr, TrueTypeTableNew(T_OS2, 2000, t2)); AddTable(ttcr, TrueTypeTableNew(T_cmap, 3000, t3)); AddTable(ttcr, TrueTypeTableNew(T_loca, 4000, t4)); AddTable(ttcr, TrueTypeTableNew(T_hhea, 5000, t5)); AddTable(ttcr, TrueTypeTableNew(T_glyf, 6000, t6)); free(t1); free(t2); free(t3); free(t4); free(t5); free(t6); StreamToFile(ttcr, "ttcrout.ttf"); TrueTypeCreatorDispose(ttcr); return 0; } #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */