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[subset] use add_array to populate feature_indexes. 

This is much faster then calling a bunch of individual add()'s.
This commit is contained in:
Garret Rieger 2018-07-30 18:10:43 -07:00
parent 7d92bef9c5
commit 89733755a4
2 changed files with 27 additions and 20 deletions
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7
src/hb-ot-layout-common-private.hh
View File

@ -190,6 +190,11 @@ struct IndexArray : ArrayOf<Index>
}
return this->len;
}
inline void add_indexes_to (hb_set_t* output /* OUT */) const
{
output->add_array (arrayZ, len);
}
};
@ -208,6 +213,8 @@ struct LangSys
unsigned int *feature_count /* IN/OUT */,
unsigned int *feature_indexes /* OUT */) const
{ return featureIndex.get_indexes (start_offset, feature_count, feature_indexes); }
inline void add_feature_indexes_to (hb_set_t *feature_indexes) const
{ featureIndex.add_indexes_to (feature_indexes); }
inline bool has_required_feature (void) const { return reqFeatureIndex != 0xFFFFu; }
inline unsigned int get_required_feature_index (void) const

40
src/hb-ot-layout.cc
View File

@ -520,6 +520,19 @@ hb_ot_layout_language_get_required_feature (hb_face_t *face,
return l.has_required_feature ();
}
static void
_hb_ot_layout_language_add_feature_indexes_to (hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
hb_set_t *feature_indexes /* OUT */)
{
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
l.add_feature_indexes_to (feature_indexes);
}
unsigned int
hb_ot_layout_language_get_feature_indexes (hb_face_t *face,
hb_tag_t table_tag,
@ -677,24 +690,11 @@ _hb_ot_layout_collect_features_features (hb_face_t *face,
feature_indexes->add (required_feature_index);
/* All features */
unsigned int feature_indices[32];
unsigned int offset, len;
offset = 0;
do {
len = ARRAY_LENGTH (feature_indices);
hb_ot_layout_language_get_feature_indexes (face,
table_tag,
script_index,
language_index,
offset, &len,
feature_indices);
for (unsigned int i = 0; i < len; i++)
feature_indexes->add (feature_indices[i]);
offset += len;
} while (len == ARRAY_LENGTH (feature_indices));
_hb_ot_layout_language_add_feature_indexes_to (face,
table_tag,
script_index,
language_index,
feature_indexes);
}
else
{
@ -763,9 +763,9 @@ _hb_ot_layout_collect_features_languages (hb_face_t *face,
}
/**
* hb_ot_layout_collect_lookups:
* hb_ot_layout_collect_features:
*
* Since: 0.9.8
* Since: REPLACEME
**/
void
hb_ot_layout_collect_features (hb_face_t *face,