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[OTLayout] Add hb_ot_layout_lookup_accelerator_t

This commit is contained in:
Behdad Esfahbod 2013-05-02 18:06:51 -04:00
parent 76ea563673
commit 45fd9424c7
3 changed files with 41 additions and 23 deletions
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21
src/hb-ot-layout-private.hh
View File

@ -244,6 +244,23 @@ namespace OT {
struct GPOS;
}
struct hb_ot_layout_lookup_accelerator_t
{
template <typename TLookup>
inline void init (const TLookup &lookup)
{
digest.init ();
lookup.add_coverage (&digest);
}
template <typename TLookup>
inline void fini (const TLookup &lookup)
{
}
hb_set_digest_t digest;
};
struct hb_ot_layout_t
{
hb_blob_t *gdef_blob;
@ -257,8 +274,8 @@ struct hb_ot_layout_t
unsigned int gsub_lookup_count;
unsigned int gpos_lookup_count;
hb_set_digest_t *gsub_digests;
hb_set_digest_t *gpos_digests;
hb_ot_layout_lookup_accelerator_t *gsub_accels;
hb_ot_layout_lookup_accelerator_t *gpos_accels;
};

33
src/hb-ot-layout.cc
View File

@ -59,26 +59,20 @@ _hb_ot_layout_create (hb_face_t *face)
layout->gsub_lookup_count = layout->gsub->get_lookup_count ();
layout->gpos_lookup_count = layout->gpos->get_lookup_count ();
layout->gsub_digests = (hb_set_digest_t *) calloc (layout->gsub->get_lookup_count (), sizeof (hb_set_digest_t));
layout->gpos_digests = (hb_set_digest_t *) calloc (layout->gpos->get_lookup_count (), sizeof (hb_set_digest_t));
layout->gsub_accels = (hb_ot_layout_lookup_accelerator_t *) calloc (layout->gsub->get_lookup_count (), sizeof (hb_ot_layout_lookup_accelerator_t));
layout->gpos_accels = (hb_ot_layout_lookup_accelerator_t *) calloc (layout->gpos->get_lookup_count (), sizeof (hb_ot_layout_lookup_accelerator_t));
if (unlikely ((layout->gsub_lookup_count && !layout->gsub_digests) ||
(layout->gpos_lookup_count && !layout->gpos_digests)))
if (unlikely ((layout->gsub_lookup_count && !layout->gsub_accels) ||
(layout->gpos_lookup_count && !layout->gpos_accels)))
{
_hb_ot_layout_destroy (layout);
return NULL;
}
for (unsigned int i = 0; i < layout->gsub_lookup_count; i++)
{
layout->gsub_digests[i].init ();
layout->gsub->get_lookup (i).add_coverage (&layout->gsub_digests[i]);
}
layout->gsub_accels[i].init (layout->gsub->get_lookup (i));
for (unsigned int i = 0; i < layout->gpos_lookup_count; i++)
{
layout->gpos_digests[i].init ();
layout->gpos->get_lookup (i).add_coverage (&layout->gpos_digests[i]);
}
layout->gpos_accels[i].init (layout->gpos->get_lookup (i));
return layout;
}
@ -90,8 +84,13 @@ _hb_ot_layout_destroy (hb_ot_layout_t *layout)
hb_blob_destroy (layout->gsub_blob);
hb_blob_destroy (layout->gpos_blob);
free (layout->gsub_digests);
free (layout->gpos_digests);
for (unsigned int i = 0; i < layout->gsub_lookup_count; i++)
layout->gsub_accels[i].fini (layout->gsub->get_lookup (i));
for (unsigned int i = 0; i < layout->gpos_lookup_count; i++)
layout->gpos_accels[i].fini (layout->gpos->get_lookup (i));
free (layout->gsub_accels);
free (layout->gpos_accels);
free (layout);
}
@ -659,7 +658,7 @@ hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face,
const OT::SubstLookup& l = hb_ot_layout_from_face (face)->gsub->get_lookup (lookup_index);
return l.would_apply (&c, &hb_ot_layout_from_face (face)->gsub_digests[lookup_index]);
return l.would_apply (&c, &hb_ot_layout_from_face (face)->gsub_accels[lookup_index].digest);
}
void
@ -681,7 +680,7 @@ hb_ot_layout_substitute_lookup (hb_font_t *font,
const OT::SubstLookup& l = hb_ot_layout_from_face (font->face)->gsub->get_lookup (lookup_index);
return l.apply_string (&c, &hb_ot_layout_from_face (font->face)->gsub_digests[lookup_index]);
return l.apply_string (&c, &hb_ot_layout_from_face (font->face)->gsub_accels[lookup_index].digest);
}
void
@ -731,7 +730,7 @@ hb_ot_layout_position_lookup (hb_font_t *font,
const OT::PosLookup& l = hb_ot_layout_from_face (font->face)->gpos->get_lookup (lookup_index);
return l.apply_string (&c, &hb_ot_layout_from_face (font->face)->gpos_digests[lookup_index]);
return l.apply_string (&c, &hb_ot_layout_from_face (font->face)->gpos_accels[lookup_index].digest);
}
void

10
src/hb-ot-shape-complex-arabic-fallback.hh
View File

@ -199,7 +199,7 @@ struct arabic_fallback_plan_t
hb_mask_t mask_array[ARABIC_NUM_FALLBACK_FEATURES];
OT::SubstLookup *lookup_array[ARABIC_NUM_FALLBACK_FEATURES];
hb_set_digest_t digest_array[ARABIC_NUM_FALLBACK_FEATURES];
hb_ot_layout_lookup_accelerator_t accel_array[ARABIC_NUM_FALLBACK_FEATURES];
};
static const arabic_fallback_plan_t arabic_fallback_plan_nil = {};
@ -214,12 +214,11 @@ arabic_fallback_plan_create (const hb_ot_shape_plan_t *plan,
for (unsigned int i = 0; i < ARABIC_NUM_FALLBACK_FEATURES; i++)
{
fallback_plan->digest_array[i].init ();
fallback_plan->mask_array[i] = plan->map.get_1_mask (arabic_fallback_features[i]);
if (fallback_plan->mask_array[i]) {
fallback_plan->lookup_array[i] = arabic_fallback_synthesize_lookup (plan, font, i);
if (fallback_plan->lookup_array[i])
fallback_plan->lookup_array[i]->add_coverage (&fallback_plan->digest_array[i]);
fallback_plan->accel_array[i].init (*fallback_plan->lookup_array[i]);
}
}
@ -234,7 +233,10 @@ arabic_fallback_plan_destroy (arabic_fallback_plan_t *fallback_plan)
for (unsigned int i = 0; i < ARABIC_NUM_FALLBACK_FEATURES; i++)
if (fallback_plan->lookup_array[i])
{
fallback_plan->accel_array[i].fini (fallback_plan->lookup_array[i]);
free (fallback_plan->lookup_array[i]);
}
free (fallback_plan);
}
@ -247,7 +249,7 @@ arabic_fallback_plan_shape (arabic_fallback_plan_t *fallback_plan,
for (unsigned int i = 0; i < ARABIC_NUM_FALLBACK_FEATURES; i++)
if (fallback_plan->lookup_array[i]) {
OT::hb_apply_context_t c (0, font, buffer, fallback_plan->mask_array[i], true/*auto_zwj*/);
fallback_plan->lookup_array[i]->apply_string (&c, &fallback_plan->digest_array[i]);
fallback_plan->lookup_array[i]->apply_string (&c, &fallback_plan->accel_array[i].digest);
}
}