diff options
author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2020-05-18 10:44:36 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2020-05-18 10:44:36 +0000 |
commit | f71aeb3fe9f385a634c46188515206f91c087b82 (patch) | |
tree | c629a78664446246792fc22a7cf8f36b9e4ffcee /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc | |
parent | 57f9b626bae9d06ab9a7818a4bf6de15213980bb (diff) |
harfbuzz 2.6.6
git-svn-id: svn://tug.org/texlive/trunk@55197 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc | 380 |
1 files changed, 118 insertions, 262 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc index 7edc3f51535..637f38fbf82 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-subset-cff2.cc @@ -38,43 +38,31 @@ using namespace CFF; -struct cff2_sub_table_offsets_t : cff_sub_table_offsets_t +struct cff2_sub_table_info_t : cff_sub_table_info_t { - cff2_sub_table_offsets_t () - : cff_sub_table_offsets_t (), - varStoreOffset (0) + cff2_sub_table_info_t () + : cff_sub_table_info_t (), + var_store_link (0) {} - unsigned int varStoreOffset; + objidx_t var_store_link; }; struct cff2_top_dict_op_serializer_t : cff_top_dict_op_serializer_t<> { bool serialize (hb_serialize_context_t *c, const op_str_t &opstr, - const cff2_sub_table_offsets_t &offsets) const + const cff2_sub_table_info_t &info) const { TRACE_SERIALIZE (this); switch (opstr.op) { case OpCode_vstore: - return_trace (FontDict::serialize_offset4_op(c, opstr.op, offsets.varStoreOffset)); + return_trace (FontDict::serialize_link4_op(c, opstr.op, info.var_store_link)); default: - return_trace (cff_top_dict_op_serializer_t<>::serialize (c, opstr, offsets)); - } - } - - unsigned int calculate_serialized_size (const op_str_t &opstr) const - { - switch (opstr.op) - { - case OpCode_vstore: - return OpCode_Size (OpCode_longintdict) + 4 + OpCode_Size (opstr.op); - - default: - return cff_top_dict_op_serializer_t<>::calculate_serialized_size (opstr); + return_trace (cff_top_dict_op_serializer_t<>::serialize (c, opstr, info)); } } }; @@ -116,8 +104,8 @@ struct cff2_cs_opset_flatten_t : cff2_cs_opset_t<cff2_cs_opset_flatten_t, flatte const blend_arg_t &arg = env.argStack[i]; if (arg.blending ()) { - if (unlikely (!((arg.numValues > 0) && (env.argStack.get_count () >= arg.numValues)))) - { + if (unlikely (!((arg.numValues > 0) && (env.argStack.get_count () >= arg.numValues)))) + { env.set_error (); return; } @@ -144,8 +132,8 @@ struct cff2_cs_opset_flatten_t : cff2_cs_opset_t<cff2_cs_opset_flatten_t, flatte if (unlikely (!((arg1.blending () && (arg.numValues == arg1.numValues) && (arg1.valueIndex == j) && (arg1.deltas.length == env.get_region_count ()))))) { - env.set_error (); - return; + env.set_error (); + return; } encoder.encode_num (arg1); } @@ -232,7 +220,7 @@ struct cff2_subr_subsetter_t : subr_subsetter_t<cff2_subr_subsetter_t, CFF2Subrs cff2_subr_subsetter_t (const OT::cff2::accelerator_subset_t &acc_, const hb_subset_plan_t *plan_) : subr_subsetter_t (acc_, plan_) {} - static void finalize_parsed_str (cff2_cs_interp_env_t &env, subr_subset_param_t& param, parsed_cs_str_t &charstring) + static void complete_parsed_str (cff2_cs_interp_env_t &env, subr_subset_param_t& param, parsed_cs_str_t &charstring) { /* vsindex is inserted at the beginning of the charstring as necessary */ if (env.seen_vsindex ()) @@ -246,9 +234,9 @@ struct cff2_subr_subsetter_t : subr_subsetter_t<cff2_subr_subsetter_t, CFF2Subrs struct cff2_subset_plan { cff2_subset_plan () - : final_size (0), - orig_fdcount (0), + : orig_fdcount (0), subset_fdcount(1), + subset_fdselect_size (0), subset_fdselect_format (0), drop_hints (false), desubroutinize (false) @@ -258,7 +246,6 @@ struct cff2_subset_plan { subset_charstrings.init (); subset_globalsubrs.init (); subset_localsubrs.init (); - privateDictInfos.init (); } ~cff2_subset_plan () @@ -268,28 +255,16 @@ struct cff2_subset_plan { subset_charstrings.fini_deep (); subset_globalsubrs.fini_deep (); subset_localsubrs.fini_deep (); - privateDictInfos.fini (); } bool create (const OT::cff2::accelerator_subset_t &acc, hb_subset_plan_t *plan) { - final_size = 0; orig_fdcount = acc.fdArray->count; drop_hints = plan->drop_hints; desubroutinize = plan->desubroutinize; - /* CFF2 header */ - final_size += OT::cff2::static_size; - - /* top dict */ - { - cff2_top_dict_op_serializer_t topSzr; - offsets.topDictInfo.size = TopDict::calculate_serialized_size (acc.topDict, topSzr); - final_size += offsets.topDictInfo.size; - } - if (desubroutinize) { /* Flatten global & local subrs */ @@ -297,9 +272,6 @@ struct cff2_subset_plan { flattener(acc, plan); if (!flattener.flatten (subset_charstrings)) return false; - - /* no global/local subroutines */ - offsets.globalSubrsInfo.size = CFF2Subrs::calculate_serialized_size (1, 0, 0); } else { @@ -316,115 +288,41 @@ struct cff2_subset_plan { if (!subr_subsetter.encode_globalsubrs (subset_globalsubrs)) return false; - /* global subrs */ - unsigned int dataSize = subset_globalsubrs.total_size (); - offsets.globalSubrsInfo.offSize = calcOffSize (dataSize); - offsets.globalSubrsInfo.size = CFF2Subrs::calculate_serialized_size (offsets.globalSubrsInfo.offSize, subset_globalsubrs.length, dataSize); - /* local subrs */ - if (!offsets.localSubrsInfos.resize (orig_fdcount)) - return false; if (!subset_localsubrs.resize (orig_fdcount)) return false; for (unsigned int fd = 0; fd < orig_fdcount; fd++) { subset_localsubrs[fd].init (); - offsets.localSubrsInfos[fd].init (); if (!subr_subsetter.encode_localsubrs (fd, subset_localsubrs[fd])) return false; - - unsigned int dataSize = subset_localsubrs[fd].total_size (); - if (dataSize > 0) - { - offsets.localSubrsInfos[fd].offset = final_size; - offsets.localSubrsInfos[fd].offSize = calcOffSize (dataSize); - offsets.localSubrsInfos[fd].size = CFF2Subrs::calculate_serialized_size (offsets.localSubrsInfos[fd].offSize, subset_localsubrs[fd].length, dataSize); - } } } - /* global subrs */ - offsets.globalSubrsInfo.offset = final_size; - final_size += offsets.globalSubrsInfo.size; - - /* variation store */ - if (acc.varStore != &Null(CFF2VariationStore)) - { - offsets.varStoreOffset = final_size; - final_size += acc.varStore->get_size (); - } - /* FDSelect */ - if (acc.fdSelect != &Null(CFF2FDSelect)) + if (acc.fdSelect != &Null (CFF2FDSelect)) { - offsets.FDSelectInfo.offset = final_size; if (unlikely (!hb_plan_subset_cff_fdselect (plan, orig_fdcount, *(const FDSelect *)acc.fdSelect, subset_fdcount, - offsets.FDSelectInfo.size, + subset_fdselect_size, subset_fdselect_format, subset_fdselect_ranges, fdmap))) return false; - - final_size += offsets.FDSelectInfo.size; } else fdmap.identity (1); - /* FDArray (FDIndex) */ - { - offsets.FDArrayInfo.offset = final_size; - cff_font_dict_op_serializer_t fontSzr; - unsigned int dictsSize = 0; - for (unsigned int i = 0; i < acc.fontDicts.length; i++) - if (fdmap.has (i)) - dictsSize += FontDict::calculate_serialized_size (acc.fontDicts[i], fontSzr); - - offsets.FDArrayInfo.offSize = calcOffSize (dictsSize); - final_size += CFF2Index::calculate_serialized_size (offsets.FDArrayInfo.offSize, subset_fdcount, dictsSize); - } - - /* CharStrings */ - { - offsets.charStringsInfo.offset = final_size; - unsigned int dataSize = subset_charstrings.total_size (); - offsets.charStringsInfo.offSize = calcOffSize (dataSize); - final_size += CFF2CharStrings::calculate_serialized_size (offsets.charStringsInfo.offSize, plan->num_output_glyphs (), dataSize); - } - - /* private dicts & local subrs */ - offsets.privateDictsOffset = final_size; - for (unsigned int i = 0; i < orig_fdcount; i++) - { - if (fdmap.has (i)) - { - bool has_localsubrs = offsets.localSubrsInfos[i].size > 0; - cff_private_dict_op_serializer_t privSzr (desubroutinize, drop_hints); - unsigned int priv_size = PrivateDict::calculate_serialized_size (acc.privateDicts[i], privSzr, has_localsubrs); - table_info_t privInfo = { final_size, priv_size, 0 }; - privateDictInfos.push (privInfo); - final_size += privInfo.size; - - if (!plan->desubroutinize && has_localsubrs) - { - offsets.localSubrsInfos[i].offset = final_size; - final_size += offsets.localSubrsInfos[i].size; - } - } - } - return true; } - unsigned int get_final_size () const { return final_size; } - - unsigned int final_size; - cff2_sub_table_offsets_t offsets; + cff2_sub_table_info_t info; unsigned int orig_fdcount; unsigned int subset_fdcount; + unsigned int subset_fdselect_size; unsigned int subset_fdselect_format; hb_vector_t<code_pair_t> subset_fdselect_ranges; @@ -433,200 +331,158 @@ struct cff2_subset_plan { str_buff_vec_t subset_charstrings; str_buff_vec_t subset_globalsubrs; hb_vector_t<str_buff_vec_t> subset_localsubrs; - hb_vector_t<table_info_t> privateDictInfos; bool drop_hints; bool desubroutinize; }; -static inline bool _write_cff2 (const cff2_subset_plan &plan, - const OT::cff2::accelerator_subset_t &acc, - unsigned int num_glyphs, - unsigned int dest_sz, - void *dest) +static bool _serialize_cff2 (hb_serialize_context_t *c, + cff2_subset_plan &plan, + const OT::cff2::accelerator_subset_t &acc, + unsigned int num_glyphs) { - hb_serialize_context_t c (dest, dest_sz); - - OT::cff2 *cff2 = c.start_serialize<OT::cff2> (); - if (unlikely (!c.extend_min (*cff2))) - return false; - - /* header */ - cff2->version.major = 0x02; - cff2->version.minor = 0x00; - cff2->topDict = OT::cff2::static_size; + /* private dicts & local subrs */ + hb_vector_t<table_info_t> private_dict_infos; + if (unlikely (!private_dict_infos.resize (plan.subset_fdcount))) return false; - /* top dict */ + for (int i = (int)acc.privateDicts.length; --i >= 0 ;) { - assert (cff2->topDict == (unsigned) (c.head - c.start)); - cff2->topDictSize = plan.offsets.topDictInfo.size; - TopDict &dict = cff2 + cff2->topDict; - cff2_top_dict_op_serializer_t topSzr; - if (unlikely (!dict.serialize (&c, acc.topDict, topSzr, plan.offsets))) + if (plan.fdmap.has (i)) { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize CFF2 top dict"); - return false; - } - } + objidx_t subrs_link = 0; - /* global subrs */ - { - assert (cff2->topDict + plan.offsets.topDictInfo.size == (unsigned) (c.head - c.start)); - CFF2Subrs *dest = c.start_embed <CFF2Subrs> (); - if (unlikely (dest == nullptr)) return false; - if (unlikely (!dest->serialize (&c, plan.offsets.globalSubrsInfo.offSize, plan.subset_globalsubrs))) - { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize global subroutines"); - return false; + if (plan.subset_localsubrs[i].length > 0) + { + CFF2Subrs *dest = c->start_embed <CFF2Subrs> (); + if (unlikely (!dest)) return false; + c->push (); + if (likely (dest->serialize (c, plan.subset_localsubrs[i]))) + subrs_link = c->pop_pack (); + else + { + c->pop_discard (); + return false; + } + } + PrivateDict *pd = c->start_embed<PrivateDict> (); + if (unlikely (!pd)) return false; + c->push (); + cff_private_dict_op_serializer_t privSzr (plan.desubroutinize, plan.drop_hints); + if (likely (pd->serialize (c, acc.privateDicts[i], privSzr, subrs_link))) + { + unsigned fd = plan.fdmap[i]; + private_dict_infos[fd].size = c->length (); + private_dict_infos[fd].link = c->pop_pack (); + } + else + { + c->pop_discard (); + return false; + } } } - /* variation store */ - if (acc.varStore != &Null(CFF2VariationStore)) + /* CharStrings */ { - assert (plan.offsets.varStoreOffset == (unsigned) (c.head - c.start)); - CFF2VariationStore *dest = c.start_embed<CFF2VariationStore> (); - if (unlikely (!dest->serialize (&c, acc.varStore))) + CFF2CharStrings *cs = c->start_embed<CFF2CharStrings> (); + if (unlikely (!cs)) return false; + c->push (); + if (likely (cs->serialize (c, plan.subset_charstrings))) + plan.info.char_strings_link = c->pop_pack (); + else { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize CFF2 Variation Store"); + c->pop_discard (); return false; } } /* FDSelect */ - if (acc.fdSelect != &Null(CFF2FDSelect)) + if (acc.fdSelect != &Null (CFF2FDSelect)) { - assert (plan.offsets.FDSelectInfo.offset == (unsigned) (c.head - c.start)); - - if (unlikely (!hb_serialize_cff_fdselect (&c, num_glyphs, *(const FDSelect *)acc.fdSelect, acc.fdArray->count, - plan.subset_fdselect_format, plan.offsets.FDSelectInfo.size, - plan.subset_fdselect_ranges))) + c->push (); + if (likely (hb_serialize_cff_fdselect (c, num_glyphs, *(const FDSelect *)acc.fdSelect, plan.orig_fdcount, + plan.subset_fdselect_format, plan.subset_fdselect_size, + plan.subset_fdselect_ranges))) + plan.info.fd_select.link = c->pop_pack (); + else { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize CFF2 subset FDSelect"); + c->pop_discard (); return false; } } /* FDArray (FD Index) */ { - assert (plan.offsets.FDArrayInfo.offset == (unsigned) (c.head - c.start)); - CFF2FDArray *fda = c.start_embed<CFF2FDArray> (); - if (unlikely (fda == nullptr)) return false; - cff_font_dict_op_serializer_t fontSzr; - if (unlikely (!fda->serialize (&c, plan.offsets.FDArrayInfo.offSize, - acc.fontDicts, plan.subset_fdcount, plan.fdmap, - fontSzr, plan.privateDictInfos))) - { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize CFF2 FDArray"); - return false; - } + c->push (); + CFF2FDArray *fda = c->start_embed<CFF2FDArray> (); + if (unlikely (!fda)) return false; + cff_font_dict_op_serializer_t fontSzr; + auto it = + + hb_zip (+ hb_iter (acc.fontDicts) + | hb_filter ([&] (const cff2_font_dict_values_t &_) + { return plan.fdmap.has (&_ - &acc.fontDicts[0]); }), + hb_iter (private_dict_infos)) + ; + if (unlikely (!fda->serialize (c, it, fontSzr))) return false; + plan.info.fd_array_link = c->pop_pack (); } - /* CharStrings */ + /* variation store */ + if (acc.varStore != &Null (CFF2VariationStore)) { - assert (plan.offsets.charStringsInfo.offset == (unsigned) (c.head - c.start)); - CFF2CharStrings *cs = c.start_embed<CFF2CharStrings> (); - if (unlikely (cs == nullptr)) return false; - if (unlikely (!cs->serialize (&c, plan.offsets.charStringsInfo.offSize, plan.subset_charstrings))) - { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize CFF2 CharStrings"); - return false; - } + c->push (); + CFF2VariationStore *dest = c->start_embed<CFF2VariationStore> (); + if (unlikely (!dest || !dest->serialize (c, acc.varStore))) return false; + plan.info.var_store_link = c->pop_pack (); } - /* private dicts & local subrs */ - assert (plan.offsets.privateDictsOffset == (unsigned) (c.head - c.start)); - for (unsigned int i = 0; i < acc.privateDicts.length; i++) + OT::cff2 *cff2 = c->allocate_min<OT::cff2> (); + if (unlikely (!cff2)) return false; + + /* header */ + cff2->version.major = 0x02; + cff2->version.minor = 0x00; + cff2->topDict = OT::cff2::static_size; + + /* top dict */ { - if (plan.fdmap.has (i)) - { - PrivateDict *pd = c.start_embed<PrivateDict> (); - if (unlikely (pd == nullptr)) return false; - unsigned int priv_size = plan.privateDictInfos[plan.fdmap[i]].size; - bool result; - cff_private_dict_op_serializer_t privSzr (plan.desubroutinize, plan.drop_hints); - /* N.B. local subrs immediately follows its corresponding private dict. i.e., subr offset == private dict size */ - unsigned int subroffset = (plan.offsets.localSubrsInfos[i].size > 0) ? priv_size : 0; - result = pd->serialize (&c, acc.privateDicts[i], privSzr, subroffset); - if (unlikely (!result)) - { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize CFF Private Dict[%d]", i); - return false; - } - if (plan.offsets.localSubrsInfos[i].size > 0) - { - CFF2Subrs *dest = c.start_embed <CFF2Subrs> (); - if (unlikely (dest == nullptr)) return false; - if (unlikely (!dest->serialize (&c, plan.offsets.localSubrsInfos[i].offSize, plan.subset_localsubrs[i]))) - { - DEBUG_MSG (SUBSET, nullptr, "failed to serialize local subroutines"); - return false; - } - } - } + TopDict &dict = cff2 + cff2->topDict; + cff2_top_dict_op_serializer_t topSzr; + if (unlikely (!dict.serialize (c, acc.topDict, topSzr, plan.info))) return false; + cff2->topDictSize = c->head - (const char *)&dict; } - assert (c.head == c.end); - c.end_serialize (); - - return true; + /* global subrs */ + { + CFF2Subrs *dest = c->start_embed <CFF2Subrs> (); + if (unlikely (!dest)) return false; + return dest->serialize (c, plan.subset_globalsubrs); + } } -static inline bool +static bool _hb_subset_cff2 (const OT::cff2::accelerator_subset_t &acc, - const char *data, - hb_subset_plan_t *plan, - hb_blob_t **prime /* OUT */) + hb_subset_context_t *c) { cff2_subset_plan cff2_plan; - if (unlikely (!cff2_plan.create (acc, plan))) - { - DEBUG_MSG(SUBSET, nullptr, "Failed to generate a cff2 subsetting plan."); - return false; - } - - unsigned int cff2_prime_size = cff2_plan.get_final_size (); - char *cff2_prime_data = (char *) calloc (1, cff2_prime_size); - - if (unlikely (!_write_cff2 (cff2_plan, acc, plan->num_output_glyphs (), - cff2_prime_size, cff2_prime_data))) { - DEBUG_MSG(SUBSET, nullptr, "Failed to write a subset cff2."); - free (cff2_prime_data); - return false; - } - - *prime = hb_blob_create (cff2_prime_data, - cff2_prime_size, - HB_MEMORY_MODE_READONLY, - cff2_prime_data, - free); - return true; + if (unlikely (!cff2_plan.create (acc, c->plan))) return false; + return _serialize_cff2 (c->serializer, cff2_plan, acc, c->plan->num_output_glyphs ()); } /** * hb_subset_cff2: - * Subsets the CFF2 table according to a provided plan. - * - * Return value: subsetted cff2 table. + * Subsets the CFF2 table according to a provided subset context. **/ bool -hb_subset_cff2 (hb_subset_plan_t *plan, - hb_blob_t **prime /* OUT */) +hb_subset_cff2 (hb_subset_context_t *c) { - hb_blob_t *cff2_blob = hb_sanitize_context_t().reference_table<CFF::cff2> (plan->source); - const char *data = hb_blob_get_data(cff2_blob, nullptr); - OT::cff2::accelerator_subset_t acc; - acc.init(plan->source); - bool result = likely (acc.is_valid ()) && - _hb_subset_cff2 (acc, data, plan, prime); - - hb_blob_destroy (cff2_blob); + acc.init (c->plan->source); + bool result = likely (acc.is_valid ()) && _hb_subset_cff2 (acc, c); acc.fini (); return result; } - #endif |