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fix HVAR & VarStore subsetting

This commit is contained in:
Michiharu Ariza 2019-02-21 15:47:27 -08:00
parent c8420109cc
commit c9b07c75a1
2 changed files with 77 additions and 78 deletions
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15
src/hb-ot-layout-common.hh
View File

@ -1741,8 +1741,9 @@ struct VarRegionList
bool serialize (hb_serialize_context_t *c, const VarRegionList *src)
{
TRACE_SERIALIZE (this);
if (unlikely (!c->allocate_size<VarRegionList> (src->get_size ()))) return_trace (false);
memcpy (this, src, src->get_size ());
unsigned int size = src->get_size ();
if (unlikely (!c->allocate_size<VarRegionList> (size))) return_trace (false);
memcpy (this, src, size);
return_trace (true);
}
@ -1831,14 +1832,14 @@ struct VarData
shortCount.set (src->shortCount);
unsigned int row_size = src->get_row_size ();
if (unlikely (!c->allocate_size<HBUINT8> (src->regionIndices.get_size () + row_size * remap.get_count ())))
if (unlikely (!c->allocate_size<HBUINT8> (src->regionIndices.get_size () + (row_size * remap.get_count ()))))
return_trace (false);
memcpy (&regionIndices, &src->regionIndices, src->regionIndices.get_size ());
HBUINT8 *p = get_delta_bytes ();
for (unsigned int i = 0; i < remap.get_count (); i++)
{
memcpy (p, src->get_delta_bytes () + remap.new_to_old (i) * row_size, row_size);
memcpy (p, src->get_delta_bytes () + (row_size * remap.new_to_old (i)), row_size);
p += row_size;
}
@ -1899,7 +1900,8 @@ struct VariationStore
const hb_array_t <hb_map2_t> &inner_remaps)
{
TRACE_SUBSET (this);
if (unlikely (!c->extend_min (*this))) return_trace (false);
unsigned int size = min_size + HBUINT32::static_size * inner_remaps.length;
if (unlikely (!c->allocate_size<HBUINT32> (size))) return_trace (false);
format.set (1);
if (unlikely (!regions.serialize (c, this)
.serialize (c, &(src+src->regions)))) return_trace (false);
@ -1908,9 +1910,6 @@ struct VariationStore
* OffsetListOf::subset () can take a custom param to be passed to VarData::serialize ()
*/
dataSets.len.set (inner_remaps.length);
if (unlikely (!c->allocate_size<HBUINT32> (inner_remaps.length)))
return_trace (false);
for (unsigned int i = 0; i < inner_remaps.length; i++)
{
if (unlikely (!dataSets[i].serialize (c, this)

132
src/hb-ot-var-hvar-table.hh
View File

@ -44,23 +44,25 @@ struct DeltaSetIndexMap
get_width ()));
}
bool serialize (hb_serialize_context_t *c,
unsigned int inner_bit_count,
unsigned int width,
const hb_array_t<const unsigned int> maps)
template <typename T>
bool serialize (hb_serialize_context_t *c, const T &plan)
{
unsigned int width = plan.get_width ();
unsigned int inner_bit_count = plan.get_inner_bit_count ();
auto map = plan.get_output_map ();
TRACE_SERIALIZE (this);
if (unlikely (maps.length && ((((inner_bit_count-1)&~0xF)!=0) || (((width-1)&~0x3)!=0))))
if (unlikely (map.length && ((((inner_bit_count-1)&~0xF)!=0) || (((width-1)&~0x3)!=0))))
return_trace (false);
if (unlikely (!c->extend_min (*this))) return_trace (false);
format.set (((width-1)<<4)|(inner_bit_count-1));
mapCount.set (maps.length);
HBUINT8 *p = c->allocate_size<HBUINT8> (width * maps.get_size ());
mapCount.set (map.length);
HBUINT8 *p = c->allocate_size<HBUINT8> (width * map.length);
if (unlikely (!p)) return_trace (false);
for (unsigned int i = 0; i < maps.length; i++)
for (unsigned int i = 0; i < map.length; i++)
{
unsigned int v = maps[i];
unsigned int v = map[i];
unsigned int outer = v >> 16;
unsigned int inner = v & 0xFFFF;
unsigned int u = (outer << inner_bit_count)|inner;
@ -93,7 +95,7 @@ struct DeltaSetIndexMap
}
{ /* Repack it. */
unsigned int n = get_inner_bitcount ();
unsigned int n = get_inner_bit_count ();
unsigned int outer = u >> n;
unsigned int inner = u & ((1 << n) - 1);
u = (outer<<16) | inner;
@ -103,10 +105,8 @@ struct DeltaSetIndexMap
}
unsigned int get_map_count () const { return mapCount; }
unsigned int get_width () const { return ((format >> 4) & 3) + 1; }
unsigned int get_inner_bitcount () const { return (format & 0xF) + 1; }
unsigned int get_inner_bit_count () const { return (format & 0xF) + 1; }
protected:
HBUINT16 format; /* A packed field that describes the compressed
@ -121,49 +121,52 @@ struct DeltaSetIndexMap
struct index_map_subset_plan_t
{
index_map_subset_plan_t (void) : map_count (0), outer_bit_count (0), inner_bit_count (0) {}
~index_map_subset_plan_t (void) { fini (); }
void init (const DeltaSetIndexMap &index_map,
hb_vector_t<hb_map2_t> &inner_remaps,
const hb_subset_plan_t *plan)
{
map_count = 0;
outer_bit_count = 0;
inner_bit_count = 0;
max_inners.init ();
output_map.init ();
/* Identity map */
if (&index_map == &Null(DeltaSetIndexMap))
return;
unsigned int last_map = (unsigned int)-1;
unsigned int last_val = (unsigned int)-1;
hb_codepoint_t last_gid = (hb_codepoint_t)-1;
hb_codepoint_t i = (hb_codepoint_t)index_map.get_map_count ();
hb_codepoint_t gid = (hb_codepoint_t)index_map.get_map_count ();
outer_bit_count = (index_map.get_width () * 8) - index_map.get_inner_bitcount ();
outer_bit_count = (index_map.get_width () * 8) - index_map.get_inner_bit_count ();
max_inners.resize (inner_remaps.length);
for (i = 0; i < inner_remaps.length; i++) max_inners[i] = 0;
for (unsigned i = 0; i < inner_remaps.length; i++) max_inners[i] = 0;
/* Search backwards for a map value different from the last map value */
for (; i > 0; i--)
for (; gid > 0; gid--)
{
hb_codepoint_t old_gid;
if (!plan->old_gid_for_new_gid (i - 1, &old_gid))
if (!plan->old_gid_for_new_gid (gid - 1, &old_gid))
continue;
unsigned int v = index_map.map (old_gid);
if (last_gid == (hb_codepoint_t)-1)
{
last_map = v;
last_gid = i;
last_val = v;
last_gid = gid;
continue;
}
if (v != last_map) break;
if (v != last_val) break;
last_map = i;
last_gid = gid;
}
map_count = last_map + 1;
for (unsigned int i = 0; i < map_count; i++)
map_count = last_gid + 1;
for (gid = 0; gid < map_count; gid++)
{
hb_codepoint_t old_gid;
if (!plan->old_gid_for_new_gid (i, &old_gid))
if (!plan->old_gid_for_new_gid (gid, &old_gid))
continue;
unsigned int v = index_map.map (old_gid);
unsigned int outer = v >> 16;
@ -173,11 +176,15 @@ struct index_map_subset_plan_t
}
}
void fini (void) {}
void fini (void)
{
max_inners.fini ();
output_map.fini ();
}
void remap (const DeltaSetIndexMap *input_map,
const hb_vector_t<hb_map2_t> &inner_remaps,
hb_vector_t <unsigned int>& output_map)
void remap (const hb_subset_plan_t *plan,
const DeltaSetIndexMap *input_map,
const hb_vector_t<hb_map2_t> &inner_remaps)
{
for (unsigned int i = 0; i < max_inners.length; i++)
{
@ -186,27 +193,33 @@ struct index_map_subset_plan_t
}
output_map.resize (map_count);
for (unsigned int i = 0; i < output_map.length; i++)
for (hb_codepoint_t gid = 0; gid < output_map.length; gid++)
{
unsigned int v = input_map->map (i);
hb_codepoint_t old_gid = 0;
(void)plan->old_gid_for_new_gid (gid, &old_gid);
unsigned int v = input_map->map (old_gid);
unsigned int outer = v >> 16;
output_map[i] = (outer << 16) | (inner_remaps[outer][v & 0xFFFF]);
output_map[gid] = (outer << 16) | (inner_remaps[outer][v & 0xFFFF]);
}
}
unsigned int get_inner_bitcount (void) const { return inner_bit_count; }
unsigned int get_inner_bit_count (void) const { return inner_bit_count; }
unsigned int get_width (void) const { return ((outer_bit_count + inner_bit_count + 7) / 8); }
unsigned int get_map_count (void) const { return map_count; }
unsigned int get_size (void) const
{ return (map_count? (DeltaSetIndexMap::min_size + get_width () * map_count): 0); }
hb_array_t<const unsigned int> get_output_map (void) const { return output_map.as_array (); }
protected:
unsigned int map_count;
hb_vector_t<unsigned int>
max_inners;
unsigned int outer_bit_count;
unsigned int inner_bit_count;
hb_vector_t<unsigned int>
output_map;
};
struct hvarvvar_subset_plan_t
@ -219,6 +232,7 @@ struct hvarvvar_subset_plan_t
const hb_subset_plan_t *plan)
{
index_map_plans.resize (index_maps.length);
var_store = &_var_store;
inner_remaps.resize (var_store->get_sub_table_count ());
@ -226,34 +240,24 @@ struct hvarvvar_subset_plan_t
inner_remaps[i].init ();
for (unsigned int i = 0; i < index_maps.length; i++)
{
index_map_plans[i].init (*index_maps[i], inner_remaps, plan);
index_map_subsets[i].init ();
}
for (unsigned int i = 0; i < inner_remaps.length; i++)
{
if (inner_remaps[i].get_count () > 0) inner_remaps[i].reorder ();
}
for (unsigned int i = 0; i < index_maps.length; i++)
{
index_map_plans[i].remap (index_maps[i], inner_remaps, index_map_subsets[i]);
}
index_map_plans[i].remap (plan, index_maps[i], inner_remaps);
}
void fini (void)
{
inner_remaps.fini_deep ();
index_map_plans.fini_deep ();
index_map_subsets.fini_deep ();
}
hb_vector_t<hb_map2_t> inner_remaps;
hb_vector_t<index_map_subset_plan_t>
index_map_plans;
hb_vector_t< hb_vector_t<unsigned int> >
index_map_subsets;
const VariationStore *var_store;
};
@ -291,25 +295,22 @@ struct HVARVVAR
}
bool serialize_index_maps (hb_serialize_context_t *c,
const hb_array_t<index_map_subset_plan_t> &im_plans,
const hb_array_t<hb_vector_t <unsigned int> > &im_subsets)
const hb_array_t<index_map_subset_plan_t> &im_plans)
{
TRACE_SUBSET (this);
if (unlikely (!advMap.serialize (c, this)
.serialize (c, im_plans[ADV_INDEX].get_inner_bitcount (),
im_plans[ADV_INDEX].get_width (),
im_subsets[ADV_INDEX].as_array ())))
if (im_plans[ADV_INDEX].get_map_count () == 0)
advMap.set (0);
else if (unlikely (!advMap.serialize (c, this).serialize (c, im_plans[ADV_INDEX])))
return_trace (false);
if (unlikely (!lsbMap.serialize (c, this)
.serialize (c, im_plans[LSB_INDEX].get_inner_bitcount (),
im_plans[LSB_INDEX].get_width (),
im_subsets[LSB_INDEX].as_array ())))
if (im_plans[LSB_INDEX].get_map_count () == 0)
lsbMap.set (0);
else if (unlikely (!lsbMap.serialize (c, this).serialize (c, im_plans[LSB_INDEX])))
return_trace (false);
if (unlikely (!rsbMap.serialize (c, this)
.serialize (c, im_plans[RSB_INDEX].get_inner_bitcount (),
im_plans[RSB_INDEX].get_width (),
im_subsets[RSB_INDEX].as_array ())))
if (im_plans[RSB_INDEX].get_map_count () == 0)
rsbMap.set (0);
else if (unlikely (!rsbMap.serialize (c, this).serialize (c, im_plans[RSB_INDEX])))
return_trace (false);
return_trace (true);
}
@ -326,19 +327,18 @@ struct HVARVVAR
index_maps.push (&(this+rsbMap));
hvar_plan.init (index_maps.as_array (), this+varStore, c->plan);
T *out = c->serializer->embed (*(T*)this);
T *out = c->serializer->allocate_min<T> ();
if (unlikely (!out)) return_trace (false);
out->version.major.set (1);
out->version.minor.set (0);
if (!unlikely (out->varStore.serialize (c->serializer, this)
if (!unlikely (out->varStore.serialize (c->serializer, out)
.serialize (c->serializer, hvar_plan.var_store, hvar_plan.inner_remaps.as_array ())))
return_trace (false);
return_trace (out->T::serialize_index_maps (c->serializer,
hvar_plan.index_map_plans.as_array (),
hvar_plan.index_map_subsets.as_array ()));
hvar_plan.index_map_plans.as_array ()));
}
float get_advance_var (hb_codepoint_t glyph,