#include "hb-open-type.hh"
#include "hb-ot-cff2-table.hh"
#include "hb-set.h"
-#include "hb-subset-cff2.hh"
#include "hb-subset-plan.hh"
#include "hb-subset-cff-common.hh"
#include "hb-cff2-interp-cs.hh"
switch (opstr.op)
{
case OpCode_vstore:
- return_trace (FontDict::serialize_link4_op(c, opstr.op, info.var_store_link));
+ if (info.var_store_link)
+ return_trace (FontDict::serialize_link4_op(c, opstr.op, info.var_store_link));
+ else
+ return_trace (true);
default:
return_trace (cff_top_dict_op_serializer_t<>::serialize (c, opstr, info));
}
};
-struct cff2_cs_opset_flatten_t : cff2_cs_opset_t<cff2_cs_opset_flatten_t, flatten_param_t>
+struct cff2_cs_opset_flatten_t : cff2_cs_opset_t<cff2_cs_opset_flatten_t, flatten_param_t, blend_arg_t>
{
- static void flush_args_and_op (op_code_t op, cff2_cs_interp_env_t &env, flatten_param_t& param)
+ static void flush_args_and_op (op_code_t op, cff2_cs_interp_env_t<blend_arg_t> &env, flatten_param_t& param)
{
switch (op)
{
}
}
- static void flush_args (cff2_cs_interp_env_t &env, flatten_param_t& param)
+ static void flush_args (cff2_cs_interp_env_t<blend_arg_t> &env, flatten_param_t& param)
{
for (unsigned int i = 0; i < env.argStack.get_count ();)
{
else
{
str_encoder_t encoder (param.flatStr);
- encoder.encode_num (arg);
+ encoder.encode_num_cs (arg);
i++;
}
}
SUPER::flush_args (env, param);
}
- static void flatten_blends (const blend_arg_t &arg, unsigned int i, cff2_cs_interp_env_t &env, flatten_param_t& param)
+ static void flatten_blends (const blend_arg_t &arg, unsigned int i, cff2_cs_interp_env_t<blend_arg_t> &env, flatten_param_t& param)
{
/* flatten the default values */
str_encoder_t encoder (param.flatStr);
env.set_error ();
return;
}
- encoder.encode_num (arg1);
+ encoder.encode_num_cs (arg1);
}
/* flatten deltas for each value */
for (unsigned int j = 0; j < arg.numValues; j++)
{
const blend_arg_t &arg1 = env.argStack[i + j];
for (unsigned int k = 0; k < arg1.deltas.length; k++)
- encoder.encode_num (arg1.deltas[k]);
+ encoder.encode_num_cs (arg1.deltas[k]);
}
/* flatten the number of values followed by blend operator */
encoder.encode_int (arg.numValues);
encoder.encode_op (OpCode_blendcs);
}
- static void flush_op (op_code_t op, cff2_cs_interp_env_t &env, flatten_param_t& param)
+ static void flush_op (op_code_t op, cff2_cs_interp_env_t<blend_arg_t> &env, flatten_param_t& param)
{
switch (op)
{
}
}
+ static void flush_hintmask (op_code_t op, cff2_cs_interp_env_t<blend_arg_t> &env, flatten_param_t& param)
+ {
+ SUPER::flush_hintmask (op, env, param);
+ if (!param.drop_hints)
+ {
+ str_encoder_t encoder (param.flatStr);
+ for (unsigned int i = 0; i < env.hintmask_size; i++)
+ encoder.encode_byte (env.str_ref[i]);
+ }
+ }
+
private:
- typedef cff2_cs_opset_t<cff2_cs_opset_flatten_t, flatten_param_t> SUPER;
- typedef cs_opset_t<blend_arg_t, cff2_cs_opset_flatten_t, cff2_cs_opset_flatten_t, cff2_cs_interp_env_t, flatten_param_t> CSOPSET;
+ typedef cff2_cs_opset_t<cff2_cs_opset_flatten_t, flatten_param_t, blend_arg_t> SUPER;
+ typedef cs_opset_t<blend_arg_t, cff2_cs_opset_flatten_t, cff2_cs_opset_flatten_t, cff2_cs_interp_env_t<blend_arg_t>, flatten_param_t> CSOPSET;
};
-struct cff2_cs_opset_subr_subset_t : cff2_cs_opset_t<cff2_cs_opset_subr_subset_t, subr_subset_param_t>
+struct cff2_cs_opset_subr_subset_t : cff2_cs_opset_t<cff2_cs_opset_subr_subset_t, subr_subset_param_t, blend_arg_t>
{
- static void process_op (op_code_t op, cff2_cs_interp_env_t &env, subr_subset_param_t& param)
+ static void process_op (op_code_t op, cff2_cs_interp_env_t<blend_arg_t> &env, subr_subset_param_t& param)
{
switch (op) {
protected:
static void process_call_subr (op_code_t op, cs_type_t type,
- cff2_cs_interp_env_t &env, subr_subset_param_t& param,
+ cff2_cs_interp_env_t<blend_arg_t> &env, subr_subset_param_t& param,
cff2_biased_subrs_t& subrs, hb_set_t *closure)
{
byte_str_ref_t str_ref = env.str_ref;
}
private:
- typedef cff2_cs_opset_t<cff2_cs_opset_subr_subset_t, subr_subset_param_t> SUPER;
+ typedef cff2_cs_opset_t<cff2_cs_opset_subr_subset_t, subr_subset_param_t, blend_arg_t> SUPER;
};
-struct cff2_subr_subsetter_t : subr_subsetter_t<cff2_subr_subsetter_t, CFF2Subrs, const OT::cff2::accelerator_subset_t, cff2_cs_interp_env_t, cff2_cs_opset_subr_subset_t>
+struct cff2_subr_subsetter_t : subr_subsetter_t<cff2_subr_subsetter_t, CFF2Subrs, const OT::cff2::accelerator_subset_t, cff2_cs_interp_env_t<blend_arg_t>, cff2_cs_opset_subr_subset_t>
{
cff2_subr_subsetter_t (const OT::cff2::accelerator_subset_t &acc_, const hb_subset_plan_t *plan_)
: subr_subsetter_t (acc_, plan_) {}
- static void complete_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<blend_arg_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 {
+struct cff2_private_blend_encoder_param_t
+{
+ cff2_private_blend_encoder_param_t (hb_serialize_context_t *c,
+ const CFF2VariationStore *varStore,
+ hb_array_t<int> normalized_coords) :
+ c (c), varStore (varStore), normalized_coords (normalized_coords) {}
+
+ void init () {}
+
+ void process_blend ()
+ {
+ if (!seen_blend)
+ {
+ region_count = varStore->varStore.get_region_index_count (ivs);
+ scalars.resize_exact (region_count);
+ varStore->varStore.get_region_scalars (ivs, normalized_coords.arrayZ, normalized_coords.length,
+ &scalars[0], region_count);
+ seen_blend = true;
+ }
+ }
+
+ double blend_deltas (hb_array_t<const number_t> deltas) const
+ {
+ double v = 0;
+ if (likely (scalars.length == deltas.length))
+ {
+ unsigned count = scalars.length;
+ for (unsigned i = 0; i < count; i++)
+ v += (double) scalars.arrayZ[i] * deltas.arrayZ[i].to_real ();
+ }
+ return v;
+ }
+
+
+ hb_serialize_context_t *c = nullptr;
+ bool seen_blend = false;
+ unsigned ivs = 0;
+ unsigned region_count = 0;
+ hb_vector_t<float> scalars;
+ const CFF2VariationStore *varStore = nullptr;
+ hb_array_t<int> normalized_coords;
+};
+
+struct cff2_private_dict_blend_opset_t : dict_opset_t
+{
+ static void process_arg_blend (cff2_private_blend_encoder_param_t& param,
+ number_t &arg,
+ const hb_array_t<const number_t> blends,
+ unsigned n, unsigned i)
+ {
+ arg.set_int (round (arg.to_real () + param.blend_deltas (blends)));
+ }
+
+ static void process_blend (cff2_priv_dict_interp_env_t& env, cff2_private_blend_encoder_param_t& param)
+ {
+ unsigned int n, k;
+
+ param.process_blend ();
+ k = param.region_count;
+ n = env.argStack.pop_uint ();
+ /* copy the blend values into blend array of the default values */
+ unsigned int start = env.argStack.get_count () - ((k+1) * n);
+ /* let an obvious error case fail, but note CFF2 spec doesn't forbid n==0 */
+ if (unlikely (start > env.argStack.get_count ()))
+ {
+ env.set_error ();
+ return;
+ }
+ for (unsigned int i = 0; i < n; i++)
+ {
+ const hb_array_t<const number_t> blends = env.argStack.sub_array (start + n + (i * k), k);
+ process_arg_blend (param, env.argStack[start + i], blends, n, i);
+ }
+
+ /* pop off blend values leaving default values now adorned with blend values */
+ env.argStack.pop (k * n);
+ }
+
+ static void process_op (op_code_t op, cff2_priv_dict_interp_env_t& env, cff2_private_blend_encoder_param_t& param)
+ {
+ switch (op) {
+ case OpCode_StdHW:
+ case OpCode_StdVW:
+ case OpCode_BlueScale:
+ case OpCode_BlueShift:
+ case OpCode_BlueFuzz:
+ case OpCode_ExpansionFactor:
+ case OpCode_LanguageGroup:
+ case OpCode_BlueValues:
+ case OpCode_OtherBlues:
+ case OpCode_FamilyBlues:
+ case OpCode_FamilyOtherBlues:
+ case OpCode_StemSnapH:
+ case OpCode_StemSnapV:
+ break;
+ case OpCode_vsindexdict:
+ env.process_vsindex ();
+ param.ivs = env.get_ivs ();
+ env.clear_args ();
+ return;
+ case OpCode_blenddict:
+ process_blend (env, param);
+ return;
+
+ default:
+ dict_opset_t::process_op (op, env);
+ if (!env.argStack.is_empty ()) return;
+ break;
+ }
+
+ if (unlikely (env.in_error ())) return;
+
+ // Write args then op
+
+ str_buff_t str;
+ str_encoder_t encoder (str);
+
+ unsigned count = env.argStack.get_count ();
+ for (unsigned i = 0; i < count; i++)
+ encoder.encode_num_tp (env.argStack[i]);
+ encoder.encode_op (op);
+
+ auto bytes = str.as_bytes ();
+ param.c->embed (&bytes, bytes.length);
+
+ env.clear_args ();
+ }
+};
+
+struct cff2_private_dict_op_serializer_t : op_serializer_t
+{
+ cff2_private_dict_op_serializer_t (bool desubroutinize_, bool drop_hints_, bool pinned_,
+ const CFF::CFF2VariationStore* varStore_,
+ hb_array_t<int> normalized_coords_)
+ : desubroutinize (desubroutinize_), drop_hints (drop_hints_), pinned (pinned_),
+ varStore (varStore_), normalized_coords (normalized_coords_) {}
+
+ bool serialize (hb_serialize_context_t *c,
+ const op_str_t &opstr,
+ objidx_t subrs_link) const
+ {
+ TRACE_SERIALIZE (this);
+
+ if (drop_hints && dict_opset_t::is_hint_op (opstr.op))
+ return_trace (true);
+
+ if (opstr.op == OpCode_Subrs)
+ {
+ if (desubroutinize || !subrs_link)
+ return_trace (true);
+ else
+ return_trace (FontDict::serialize_link2_op (c, opstr.op, subrs_link));
+ }
+
+ if (pinned)
+ {
+ // Reinterpret opstr and process blends.
+ cff2_priv_dict_interp_env_t env {hb_ubytes_t (opstr.ptr, opstr.length)};
+ cff2_private_blend_encoder_param_t param (c, varStore, normalized_coords);
+ dict_interpreter_t<cff2_private_dict_blend_opset_t, cff2_private_blend_encoder_param_t, cff2_priv_dict_interp_env_t> interp (env);
+ return_trace (interp.interpret (param));
+ }
+
+ return_trace (copy_opstr (c, opstr));
+ }
+
+ protected:
+ const bool desubroutinize;
+ const bool drop_hints;
+ const bool pinned;
+ const CFF::CFF2VariationStore* varStore;
+ hb_array_t<int> normalized_coords;
+};
+
+
+namespace OT {
+struct cff2_subset_plan
+{
bool create (const OT::cff2::accelerator_subset_t &acc,
hb_subset_plan_t *plan)
{
+ /* make sure notdef is first */
+ hb_codepoint_t old_glyph;
+ if (!plan->old_gid_for_new_gid (0, &old_glyph) || (old_glyph != 0)) return false;
+
+ num_glyphs = plan->num_output_glyphs ();
orig_fdcount = acc.fdArray->count;
drop_hints = plan->flags & HB_SUBSET_FLAGS_NO_HINTING;
- desubroutinize = plan->flags & HB_SUBSET_FLAGS_DESUBROUTINIZE;
+ pinned = (bool) plan->normalized_coords;
+ desubroutinize = plan->flags & HB_SUBSET_FLAGS_DESUBROUTINIZE ||
+ pinned; // For instancing we need this path
if (desubroutinize)
{
/* Flatten global & local subrs */
- subr_flattener_t<const OT::cff2::accelerator_subset_t, cff2_cs_interp_env_t, cff2_cs_opset_flatten_t>
+ subr_flattener_t<const OT::cff2::accelerator_subset_t, cff2_cs_interp_env_t<blend_arg_t>, cff2_cs_opset_flatten_t>
flattener(acc, plan);
if (!flattener.flatten (subset_charstrings))
return false;
return false;
/* encode charstrings, global subrs, local subrs with new subroutine numbers */
- if (!subr_subsetter.encode_charstrings (subset_charstrings))
+ if (!subr_subsetter.encode_charstrings (subset_charstrings, !pinned))
return false;
if (!subr_subsetter.encode_globalsubrs (subset_globalsubrs))
cff2_sub_table_info_t info;
+ unsigned int num_glyphs;
unsigned int orig_fdcount = 0;
unsigned int subset_fdcount = 1;
- unsigned int subset_fdselect_size = 0;
+ unsigned int subset_fdselect_size = 0;
unsigned int subset_fdselect_format = 0;
+ bool pinned = false;
hb_vector_t<code_pair_t> subset_fdselect_ranges;
hb_inc_bimap_t fdmap;
bool drop_hints = false;
bool desubroutinize = false;
};
+} // namespace OT
-static bool _serialize_cff2 (hb_serialize_context_t *c,
- cff2_subset_plan &plan,
- const OT::cff2::accelerator_subset_t &acc,
- unsigned int num_glyphs)
+bool
+OT::cff2::accelerator_subset_t::serialize (hb_serialize_context_t *c,
+ struct cff2_subset_plan &plan,
+ hb_array_t<int> normalized_coords) const
{
/* private dicts & local subrs */
hb_vector_t<table_info_t> private_dict_infos;
if (unlikely (!private_dict_infos.resize (plan.subset_fdcount))) return false;
- for (int i = (int)acc.privateDicts.length; --i >= 0 ;)
+ for (int i = (int)privateDicts.length; --i >= 0 ;)
{
if (plan.fdmap.has (i))
{
if (plan.subset_localsubrs[i].length > 0)
{
- CFF2Subrs *dest = c->start_embed <CFF2Subrs> ();
- if (unlikely (!dest)) return false;
- c->push ();
+ auto *dest = c->push <CFF2Subrs> ();
if (likely (dest->serialize (c, plan.subset_localsubrs[i])))
- subrs_link = c->pop_pack ();
+ subrs_link = c->pop_pack (false);
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)))
+ auto *pd = c->push<PrivateDict> ();
+ cff2_private_dict_op_serializer_t privSzr (plan.desubroutinize, plan.drop_hints, plan.pinned,
+ varStore, normalized_coords);
+ if (likely (pd->serialize (c, privateDicts[i], privSzr, subrs_link)))
{
unsigned fd = plan.fdmap[i];
private_dict_infos[fd].size = c->length ();
/* CharStrings */
{
- 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 ();
+
+ unsigned data_size = 0;
+ unsigned total_size = CFF2CharStrings::total_size (plan.subset_charstrings, &data_size);
+ if (unlikely (!c->start_zerocopy (total_size)))
+ return false;
+
+ auto *cs = c->start_embed<CFF2CharStrings> ();
+ if (likely (cs->serialize (c, plan.subset_charstrings, &data_size)))
+ plan.info.char_strings_link = c->pop_pack (false);
else
{
c->pop_discard ();
}
/* FDSelect */
- if (acc.fdSelect != &Null (CFF2FDSelect))
+ if (fdSelect != &Null (CFF2FDSelect))
{
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)))
+ if (likely (hb_serialize_cff_fdselect (c, plan.num_glyphs, *(const FDSelect *)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
{
/* FDArray (FD Index) */
{
- c->push ();
- CFF2FDArray *fda = c->start_embed<CFF2FDArray> ();
- if (unlikely (!fda)) return false;
+ auto *fda = c->push<CFF2FDArray> ();
cff_font_dict_op_serializer_t fontSzr;
auto it =
- + hb_zip (+ hb_iter (acc.fontDicts)
+ + hb_zip (+ hb_iter (fontDicts)
| hb_filter ([&] (const cff2_font_dict_values_t &_)
- { return plan.fdmap.has (&_ - &acc.fontDicts[0]); }),
+ { return plan.fdmap.has (&_ - &fontDicts[0]); }),
hb_iter (private_dict_infos))
;
- if (unlikely (!fda->serialize (c, it, fontSzr))) return false;
- plan.info.fd_array_link = c->pop_pack ();
+ if (unlikely (!fda->serialize (c, it, fontSzr)))
+ {
+ c->pop_discard ();
+ return false;
+ }
+ plan.info.fd_array_link = c->pop_pack (false);
}
/* variation store */
- if (acc.varStore != &Null (CFF2VariationStore))
+ if (varStore != &Null (CFF2VariationStore) &&
+ !plan.pinned)
{
- 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 ();
+ auto *dest = c->push<CFF2VariationStore> ();
+ if (unlikely (!dest->serialize (c, varStore)))
+ {
+ c->pop_discard ();
+ return false;
+ }
+ plan.info.var_store_link = c->pop_pack (false);
}
OT::cff2 *cff2 = c->allocate_min<OT::cff2> ();
{
TopDict &dict = cff2 + cff2->topDict;
cff2_top_dict_op_serializer_t topSzr;
- if (unlikely (!dict.serialize (c, acc.topDict, topSzr, plan.info))) return false;
+ if (unlikely (!dict.serialize (c, topDict, topSzr, plan.info))) return false;
cff2->topDictSize = c->head - (const char *)&dict;
}
/* global subrs */
{
- CFF2Subrs *dest = c->start_embed <CFF2Subrs> ();
- if (unlikely (!dest)) return false;
+ auto *dest = c->start_embed <CFF2Subrs> ();
return dest->serialize (c, plan.subset_globalsubrs);
}
}
-static bool
-_hb_subset_cff2 (const OT::cff2::accelerator_subset_t &acc,
- hb_subset_context_t *c)
+bool
+OT::cff2::accelerator_subset_t::subset (hb_subset_context_t *c) const
{
cff2_subset_plan cff2_plan;
- if (unlikely (!cff2_plan.create (acc, c->plan))) return false;
- return _serialize_cff2 (c->serializer, cff2_plan, acc, c->plan->num_output_glyphs ());
-}
-
-bool
-hb_subset_cff2 (hb_subset_context_t *c)
-{
- OT::cff2::accelerator_subset_t acc (c->plan->source);
- return acc.is_valid () && _hb_subset_cff2 (acc, c);
+ if (unlikely (!cff2_plan.create (*this, c->plan))) return false;
+ return serialize (c->serializer, cff2_plan,
+ c->plan->normalized_coords.as_array ());
}
#endif
projects / platform / upstream / harfbuzz.git / blobdiff