* Google Author(s): Behdad Esfahbod
*/
-#include "hb-ot-map-private.hh"
+#include "hb-ot-map.hh"
+#include "hb-ot-shape.hh"
+#include "hb-ot-layout.hh"
-#include "hb-ot-layout-private.hh"
-
-void
-hb_ot_map_t::add_lookups (hb_face_t *face,
- unsigned int table_index,
- unsigned int feature_index,
- hb_mask_t mask,
- bool auto_zwj)
+void hb_ot_map_t::collect_lookups (unsigned int table_index, hb_set_t *lookups_out) const
{
- unsigned int lookup_indices[32];
- unsigned int offset, len;
- unsigned int table_lookup_count;
-
- table_lookup_count = hb_ot_layout_table_get_lookup_count (face, table_tags[table_index]);
-
- offset = 0;
- do {
- len = ARRAY_LENGTH (lookup_indices);
- hb_ot_layout_feature_get_lookups (face,
- table_tags[table_index],
- feature_index,
- offset, &len,
- lookup_indices);
-
- for (unsigned int i = 0; i < len; i++)
- {
- if (lookup_indices[i] >= table_lookup_count)
- continue;
- hb_ot_map_t::lookup_map_t *lookup = lookups[table_index].push ();
- if (unlikely (!lookup))
- return;
- lookup->mask = mask;
- lookup->index = lookup_indices[i];
- lookup->auto_zwj = auto_zwj;
- }
-
- offset += len;
- } while (len == ARRAY_LENGTH (lookup_indices));
+ for (unsigned int i = 0; i < lookups[table_index].length; i++)
+ hb_set_add (lookups_out, lookups[table_index][i].index);
}
+
hb_ot_map_builder_t::hb_ot_map_builder_t (hb_face_t *face_,
const hb_segment_properties_t *props_)
{
memset (this, 0, sizeof (*this));
+ feature_infos.init ();
+ for (unsigned int table_index = 0; table_index < 2; table_index++)
+ stages[table_index].init ();
+
face = face_;
props = *props_;
/* Fetch script/language indices for GSUB/GPOS. We need these later to skip
* features not available in either table and not waste precious bits for them. */
- hb_tag_t script_tags[3] = {HB_TAG_NONE, HB_TAG_NONE, HB_TAG_NONE};
- hb_tag_t language_tag;
+ unsigned int script_count = HB_OT_MAX_TAGS_PER_SCRIPT;
+ unsigned int language_count = HB_OT_MAX_TAGS_PER_LANGUAGE;
+ hb_tag_t script_tags[HB_OT_MAX_TAGS_PER_SCRIPT];
+ hb_tag_t language_tags[HB_OT_MAX_TAGS_PER_LANGUAGE];
- hb_ot_tags_from_script (props.script, &script_tags[0], &script_tags[1]);
- language_tag = hb_ot_tag_from_language (props.language);
+ hb_ot_tags_from_script_and_language (props.script, props.language, &script_count, script_tags, &language_count, language_tags);
for (unsigned int table_index = 0; table_index < 2; table_index++) {
hb_tag_t table_tag = table_tags[table_index];
- found_script[table_index] = hb_ot_layout_table_choose_script (face, table_tag, script_tags, &script_index[table_index], &chosen_script[table_index]);
- hb_ot_layout_script_find_language (face, table_tag, script_index[table_index], language_tag, &language_index[table_index]);
+ found_script[table_index] = (bool) hb_ot_layout_table_select_script (face, table_tag, script_count, script_tags, &script_index[table_index], &chosen_script[table_index]);
+ hb_ot_layout_script_select_language (face, table_tag, script_index[table_index], language_count, language_tags, &language_index[table_index]);
}
}
-void hb_ot_map_builder_t::add_feature (hb_tag_t tag, unsigned int value,
- hb_ot_map_feature_flags_t flags)
+hb_ot_map_builder_t::~hb_ot_map_builder_t ()
+{
+ feature_infos.fini ();
+ for (unsigned int table_index = 0; table_index < 2; table_index++)
+ stages[table_index].fini ();
+}
+
+void hb_ot_map_builder_t::add_feature (hb_tag_t tag,
+ hb_ot_map_feature_flags_t flags,
+ unsigned int value)
{
- feature_info_t *info = feature_infos.push();
- if (unlikely (!info)) return;
if (unlikely (!tag)) return;
+ feature_info_t *info = feature_infos.push();
info->tag = tag;
- info->seq = feature_infos.len;
+ info->seq = feature_infos.length;
info->max_value = value;
info->flags = flags;
info->default_value = (flags & F_GLOBAL) ? value : 0;
info->stage[1] = current_stage[1];
}
-
-void hb_ot_map_t::collect_lookups (unsigned int table_index, hb_set_t *lookups_out) const
+void
+hb_ot_map_builder_t::add_lookups (hb_ot_map_t &m,
+ unsigned int table_index,
+ unsigned int feature_index,
+ unsigned int variations_index,
+ hb_mask_t mask,
+ bool auto_zwnj,
+ bool auto_zwj,
+ bool random)
{
- for (unsigned int i = 0; i < lookups[table_index].len; i++)
- hb_set_add (lookups_out, lookups[table_index][i].index);
+ unsigned int lookup_indices[32];
+ unsigned int offset, len;
+ unsigned int table_lookup_count;
+
+ table_lookup_count = hb_ot_layout_table_get_lookup_count (face, table_tags[table_index]);
+
+ offset = 0;
+ do {
+ len = ARRAY_LENGTH (lookup_indices);
+ hb_ot_layout_feature_with_variations_get_lookups (face,
+ table_tags[table_index],
+ feature_index,
+ variations_index,
+ offset, &len,
+ lookup_indices);
+
+ for (unsigned int i = 0; i < len; i++)
+ {
+ if (lookup_indices[i] >= table_lookup_count)
+ continue;
+ hb_ot_map_t::lookup_map_t *lookup = m.lookups[table_index].push ();
+ lookup->mask = mask;
+ lookup->index = lookup_indices[i];
+ lookup->auto_zwnj = auto_zwnj;
+ lookup->auto_zwj = auto_zwj;
+ lookup->random = random;
+ }
+
+ offset += len;
+ } while (len == ARRAY_LENGTH (lookup_indices));
}
+
void hb_ot_map_builder_t::add_pause (unsigned int table_index, hb_ot_map_t::pause_func_t pause_func)
{
stage_info_t *s = stages[table_index].push ();
- if (likely (s)) {
- s->index = current_stage[table_index];
- s->pause_func = pause_func;
- }
+ s->index = current_stage[table_index];
+ s->pause_func = pause_func;
current_stage[table_index]++;
}
void
-hb_ot_map_builder_t::compile (hb_ot_map_t &m)
+hb_ot_map_builder_t::compile (hb_ot_map_t &m,
+ const hb_ot_shape_plan_key_t &key)
{
- m.global_mask = 1;
+ static_assert ((!(HB_GLYPH_FLAG_DEFINED & (HB_GLYPH_FLAG_DEFINED + 1))), "");
+ unsigned int global_bit_mask = HB_GLYPH_FLAG_DEFINED + 1;
+ unsigned int global_bit_shift = hb_popcount (HB_GLYPH_FLAG_DEFINED);
+
+ m.global_mask = global_bit_mask;
unsigned int required_feature_index[2];
hb_tag_t required_feature_tag[2];
&required_feature_tag[table_index]);
}
- if (!feature_infos.len)
- return;
-
/* Sort features and merge duplicates */
+ if (feature_infos.length)
{
feature_infos.qsort ();
unsigned int j = 0;
- for (unsigned int i = 1; i < feature_infos.len; i++)
+ for (unsigned int i = 1; i < feature_infos.length; i++)
if (feature_infos[i].tag != feature_infos[j].tag)
feature_infos[++j] = feature_infos[i];
else {
/* Allocate bits now */
- unsigned int next_bit = 1;
- for (unsigned int i = 0; i < feature_infos.len; i++)
+ unsigned int next_bit = global_bit_shift + 1;
+
+ for (unsigned int i = 0; i < feature_infos.length; i++)
{
const feature_info_t *info = &feature_infos[i];
/* Uses the global bit */
bits_needed = 0;
else
- bits_needed = _hb_bit_storage (info->max_value);
+ /* Limit bits per feature. */
+ bits_needed = MIN(HB_OT_MAP_MAX_BITS, hb_bit_storage (info->max_value));
if (!info->max_value || next_bit + bits_needed > 8 * sizeof (hb_mask_t))
continue; /* Feature disabled, or not enough bits. */
for (unsigned int table_index = 0; table_index < 2; table_index++)
{
if (required_feature_tag[table_index] == info->tag)
- {
required_feature_stage[table_index] = info->stage[table_index];
- found = true;
- continue;
- }
+
found |= hb_ot_layout_language_find_feature (face,
table_tags[table_index],
script_index[table_index],
info->tag,
&feature_index[table_index]);
}
+ if (!found && (info->flags & F_GLOBAL_SEARCH))
+ {
+ for (unsigned int table_index = 0; table_index < 2; table_index++)
+ {
+ found |= hb_ot_layout_table_find_feature (face,
+ table_tags[table_index],
+ info->tag,
+ &feature_index[table_index]);
+ }
+ }
if (!found && !(info->flags & F_HAS_FALLBACK))
continue;
hb_ot_map_t::feature_map_t *map = m.features.push ();
- if (unlikely (!map))
- break;
map->tag = info->tag;
map->index[0] = feature_index[0];
map->index[1] = feature_index[1];
map->stage[0] = info->stage[0];
map->stage[1] = info->stage[1];
+ map->auto_zwnj = !(info->flags & F_MANUAL_ZWNJ);
map->auto_zwj = !(info->flags & F_MANUAL_ZWJ);
+ map->random = !!(info->flags & F_RANDOM);
if ((info->flags & F_GLOBAL) && info->max_value == 1) {
/* Uses the global bit */
- map->shift = 0;
- map->mask = 1;
+ map->shift = global_bit_shift;
+ map->mask = global_bit_mask;
} else {
map->shift = next_bit;
- map->mask = (1 << (next_bit + bits_needed)) - (1 << next_bit);
+ map->mask = (1u << (next_bit + bits_needed)) - (1u << next_bit);
next_bit += bits_needed;
m.global_mask |= (info->default_value << map->shift) & map->mask;
}
- map->_1_mask = (1 << map->shift) & map->mask;
+ map->_1_mask = (1u << map->shift) & map->mask;
map->needs_fallback = !found;
}
feature_infos.shrink (0); /* Done with these */
- add_gsub_pause (NULL);
- add_gpos_pause (NULL);
+ add_gsub_pause (nullptr);
+ add_gpos_pause (nullptr);
for (unsigned int table_index = 0; table_index < 2; table_index++)
{
{
if (required_feature_index[table_index] != HB_OT_LAYOUT_NO_FEATURE_INDEX &&
required_feature_stage[table_index] == stage)
- m.add_lookups (face, table_index,
- required_feature_index[table_index],
- 1 /* mask */,
- true /* auto_zwj */);
+ add_lookups (m, table_index,
+ required_feature_index[table_index],
+ key.variations_index[table_index],
+ global_bit_mask);
- for (unsigned i = 0; i < m.features.len; i++)
+ for (unsigned i = 0; i < m.features.length; i++)
if (m.features[i].stage[table_index] == stage)
- m.add_lookups (face, table_index,
- m.features[i].index[table_index],
- m.features[i].mask,
- m.features[i].auto_zwj);
+ add_lookups (m, table_index,
+ m.features[i].index[table_index],
+ key.variations_index[table_index],
+ m.features[i].mask,
+ m.features[i].auto_zwnj,
+ m.features[i].auto_zwj,
+ m.features[i].random);
/* Sort lookups and merge duplicates */
- if (last_num_lookups < m.lookups[table_index].len)
+ if (last_num_lookups < m.lookups[table_index].length)
{
- m.lookups[table_index].qsort (last_num_lookups, m.lookups[table_index].len);
+ m.lookups[table_index].qsort (last_num_lookups, m.lookups[table_index].length);
unsigned int j = last_num_lookups;
- for (unsigned int i = j + 1; i < m.lookups[table_index].len; i++)
+ for (unsigned int i = j + 1; i < m.lookups[table_index].length; i++)
if (m.lookups[table_index][i].index != m.lookups[table_index][j].index)
m.lookups[table_index][++j] = m.lookups[table_index][i];
else
{
m.lookups[table_index][j].mask |= m.lookups[table_index][i].mask;
+ m.lookups[table_index][j].auto_zwnj &= m.lookups[table_index][i].auto_zwnj;
m.lookups[table_index][j].auto_zwj &= m.lookups[table_index][i].auto_zwj;
}
m.lookups[table_index].shrink (j + 1);
}
- last_num_lookups = m.lookups[table_index].len;
+ last_num_lookups = m.lookups[table_index].length;
- if (stage_index < stages[table_index].len && stages[table_index][stage_index].index == stage) {
+ if (stage_index < stages[table_index].length && stages[table_index][stage_index].index == stage) {
hb_ot_map_t::stage_map_t *stage_map = m.stages[table_index].push ();
- if (likely (stage_map)) {
- stage_map->last_lookup = last_num_lookups;
- stage_map->pause_func = stages[table_index][stage_index].pause_func;
- }
+ stage_map->last_lookup = last_num_lookups;
+ stage_map->pause_func = stages[table_index][stage_index].pause_func;
stage_index++;
}
projects / platform / upstream / harfbuzz.git / blobdiff