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));
}
}
};
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;
}
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);
}
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 ())
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)
subset_charstrings.init ();
subset_globalsubrs.init ();
subset_localsubrs.init ();
- privateDictInfos.init ();
}
~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 */
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
{
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;
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
projects / platform / upstream / harfbuzz.git / blobdiff