#include "hb-ot-hhea-table.hh"
#include "hb-ot-hmtx-table.hh"
#include "hb-ot-maxp-table.hh"
+#include "hb-ot-color-sbix-table.hh"
+#include "hb-ot-color-colr-table.hh"
#include "hb-ot-os2-table.hh"
#include "hb-ot-post-table.hh"
#include "hb-ot-cff1-table.hh"
#include "hb-ot-cff2-table.hh"
#include "hb-ot-vorg-table.hh"
#include "hb-ot-name-table.hh"
+#include "hb-ot-color-cbdt-table.hh"
#include "hb-ot-layout-gsub-table.hh"
#include "hb-ot-layout-gpos-table.hh"
+#include "hb-ot-var-gvar-table.hh"
+#include "hb-ot-var-hvar-table.hh"
-HB_UNUSED static inline unsigned int
-_plan_estimate_subset_table_size (hb_subset_plan_t *plan,
- unsigned int table_len);
-static inline unsigned int
-_plan_estimate_subset_table_size (hb_subset_plan_t *plan,
- unsigned int table_len)
+static unsigned
+_plan_estimate_subset_table_size (hb_subset_plan_t *plan, unsigned table_len)
{
- unsigned int src_glyphs = plan->source->get_num_glyphs ();
- unsigned int dst_glyphs = plan->glyphset ()->get_population ();
+ unsigned src_glyphs = plan->source->get_num_glyphs ();
+ unsigned dst_glyphs = plan->glyphset ()->get_population ();
if (unlikely (!src_glyphs))
return 512 + table_len;
- return 512 + (unsigned int) (table_len * sqrt ((double) dst_glyphs / src_glyphs));
+ return 512 + (unsigned) (table_len * sqrt ((double) dst_glyphs / src_glyphs));
}
template<typename TableType>
static bool
-_subset2 (hb_subset_plan_t *plan)
+_subset (hb_subset_plan_t *plan)
{
bool result = false;
hb_blob_t *source_blob = hb_sanitize_context_t ().reference_table<TableType> (plan->source);
hb_vector_t<char> buf;
/* TODO Not all tables are glyph-related. 'name' table size for example should not be
* affected by number of glyphs. Accommodate that. */
- unsigned int buf_size = _plan_estimate_subset_table_size (plan, source_blob->length);
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c initial estimated table size: %u bytes.", HB_UNTAG (tag), buf_size);
+ unsigned buf_size = _plan_estimate_subset_table_size (plan, source_blob->length);
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c initial estimated table size: %u bytes.", HB_UNTAG (tag), buf_size);
if (unlikely (!buf.alloc (buf_size)))
{
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c failed to allocate %u bytes.", HB_UNTAG (tag), buf_size);
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c failed to allocate %u bytes.", HB_UNTAG (tag), buf_size);
hb_blob_destroy (source_blob);
return false;
}
retry:
hb_serialize_context_t serializer ((void *) buf, buf_size);
serializer.start_serialize<TableType> ();
- hb_subset_context_t c (plan, &serializer);
+ hb_subset_context_t c (source_blob, plan, &serializer, tag);
bool needed = table->subset (&c);
if (serializer.ran_out_of_room)
{
buf_size += (buf_size >> 1) + 32;
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c ran out of room; reallocating to %u bytes.", HB_UNTAG (tag), buf_size);
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c ran out of room; reallocating to %u bytes.", HB_UNTAG (tag), buf_size);
if (unlikely (!buf.alloc (buf_size)))
{
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c failed to reallocate %u bytes.", HB_UNTAG (tag), buf_size);
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c failed to reallocate %u bytes.", HB_UNTAG (tag), buf_size);
hb_blob_destroy (source_blob);
return false;
}
if (needed)
{
hb_blob_t *dest_blob = serializer.copy_blob ();
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c final subset table size: %u bytes.", HB_UNTAG (tag), dest_blob->length);
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c final subset table size: %u bytes.", HB_UNTAG (tag), dest_blob->length);
result = c.plan->add_table (tag, dest_blob);
hb_blob_destroy (dest_blob);
}
else
{
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset table subsetted to empty.", HB_UNTAG (tag));
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c::subset table subsetted to empty.", HB_UNTAG (tag));
}
}
}
else
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset sanitize failed on source table.", HB_UNTAG (tag));
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c::subset sanitize failed on source table.", HB_UNTAG (tag));
hb_blob_destroy (source_blob);
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset %s", HB_UNTAG (tag), result ? "success" : "FAILED!");
+ DEBUG_MSG (SUBSET, nullptr, "OT::%c%c%c%c::subset %s", HB_UNTAG (tag), result ? "success" : "FAILED!");
return result;
}
-template<typename TableType>
static bool
-_subset (hb_subset_plan_t *plan)
+_is_table_present (hb_face_t *source, hb_tag_t tag)
{
- hb_blob_t *source_blob = hb_sanitize_context_t ().reference_table<TableType> (plan->source);
- const TableType *table = source_blob->as<TableType> ();
-
- hb_tag_t tag = TableType::tableTag;
- hb_bool_t result = false;
- if (source_blob->data)
- result = table->subset (plan);
- else
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset sanitize failed on source table.", HB_UNTAG (tag));
-
- hb_blob_destroy (source_blob);
- DEBUG_MSG(SUBSET, nullptr, "OT::%c%c%c%c::subset %s", HB_UNTAG (tag), result ? "success" : "FAILED!");
- return result;
+ hb_tag_t table_tags[32];
+ unsigned offset = 0, num_tables = ARRAY_LENGTH (table_tags);
+ while ((hb_face_get_table_tags (source, offset, &num_tables, table_tags), num_tables))
+ {
+ for (unsigned i = 0; i < num_tables; ++i)
+ if (table_tags[i] == tag)
+ return true;
+ offset += num_tables;
+ }
+ return false;
}
-
static bool
-_subset_table (hb_subset_plan_t *plan,
- hb_tag_t tag)
+_should_drop_table (hb_subset_plan_t *plan, hb_tag_t tag)
{
- DEBUG_MSG(SUBSET, nullptr, "begin subset %c%c%c%c", HB_UNTAG (tag));
- bool result = true;
- switch (tag) {
- case HB_OT_TAG_glyf:
- result = _subset2<const OT::glyf> (plan);
- break;
- case HB_OT_TAG_hdmx:
- result = _subset2<const OT::hdmx> (plan);
- break;
- case HB_OT_TAG_name:
- result = _subset2<const OT::name> (plan);
- break;
- case HB_OT_TAG_head:
- // TODO that won't work well if there is no glyf
- DEBUG_MSG(SUBSET, nullptr, "skip head, handled by glyf");
- result = true;
- break;
- case HB_OT_TAG_hhea:
- DEBUG_MSG(SUBSET, nullptr, "skip hhea handled by hmtx");
- return true;
- case HB_OT_TAG_hmtx:
- result = _subset2<const OT::hmtx> (plan);
- break;
- case HB_OT_TAG_vhea:
- DEBUG_MSG(SUBSET, nullptr, "skip vhea handled by vmtx");
- return true;
- case HB_OT_TAG_vmtx:
- result = _subset2<const OT::vmtx> (plan);
- break;
- case HB_OT_TAG_maxp:
- result = _subset2<const OT::maxp> (plan);
- break;
- case HB_OT_TAG_loca:
- DEBUG_MSG(SUBSET, nullptr, "skip loca handled by glyf");
- return true;
- case HB_OT_TAG_cmap:
- result = _subset2<const OT::cmap> (plan);
- break;
- case HB_OT_TAG_OS2:
- result = _subset2<const OT::OS2> (plan);
- break;
- case HB_OT_TAG_post:
- result = _subset2<const OT::post> (plan);
- break;
+ if (plan->drop_tables->has (tag))
+ return true;
-#ifndef HB_NO_SUBSET_CFF
- case HB_OT_TAG_cff1:
- result = _subset<const OT::cff1> (plan);
- break;
- case HB_OT_TAG_cff2:
- result = _subset<const OT::cff2> (plan);
- break;
- case HB_OT_TAG_VORG:
- result = _subset2<const OT::VORG> (plan);
- break;
-#endif
+ switch (tag)
+ {
+ case HB_TAG ('c','v','a','r'): /* hint table, fallthrough */
+ case HB_TAG ('c','v','t',' '): /* hint table, fallthrough */
+ case HB_TAG ('f','p','g','m'): /* hint table, fallthrough */
+ case HB_TAG ('p','r','e','p'): /* hint table, fallthrough */
+ case HB_TAG ('h','d','m','x'): /* hint table, fallthrough */
+ case HB_TAG ('V','D','M','X'): /* hint table, fallthrough */
+ return plan->drop_hints;
-#ifndef HB_NO_SUBSET_LAYOUT
- case HB_OT_TAG_GDEF:
- result = _subset2<const OT::GDEF> (plan);
- break;
- case HB_OT_TAG_GSUB:
- result = _subset2<const OT::GSUB> (plan);
- break;
- case HB_OT_TAG_GPOS:
- result = _subset2<const OT::GPOS> (plan);
- break;
+#ifdef HB_NO_SUBSET_LAYOUT
+ // Drop Layout Tables if requested.
+ case HB_OT_TAG_GDEF:
+ case HB_OT_TAG_GPOS:
+ case HB_OT_TAG_GSUB:
+ case HB_TAG ('m','o','r','x'):
+ case HB_TAG ('m','o','r','t'):
+ case HB_TAG ('k','e','r','x'):
+ case HB_TAG ('k','e','r','n'):
+ return true;
#endif
- default:
- hb_blob_t *source_table = hb_face_reference_table (plan->source, tag);
- if (likely (source_table))
- result = plan->add_table (tag, source_table);
- else
- result = false;
- hb_blob_destroy (source_table);
- break;
+ default:
+ return false;
}
- DEBUG_MSG(SUBSET, nullptr, "subset %c%c%c%c %s", HB_UNTAG (tag), result ? "ok" : "FAILED");
- return result;
}
static bool
-_should_drop_table (hb_subset_plan_t *plan, hb_tag_t tag)
+_subset_table (hb_subset_plan_t *plan, hb_tag_t tag)
{
- if (plan->drop_tables->has (tag))
- return true;
+ DEBUG_MSG (SUBSET, nullptr, "subset %c%c%c%c", HB_UNTAG (tag));
+ switch (tag)
+ {
+ case HB_OT_TAG_glyf: return _subset<const OT::glyf> (plan);
+ case HB_OT_TAG_hdmx: return _subset<const OT::hdmx> (plan);
+ case HB_OT_TAG_name: return _subset<const OT::name> (plan);
+ case HB_OT_TAG_head:
+ if (_is_table_present (plan->source, HB_OT_TAG_glyf) && !_should_drop_table (plan, HB_OT_TAG_glyf))
+ return true; /* skip head, handled by glyf */
+ return _subset<const OT::head> (plan);
+ case HB_OT_TAG_hhea: return true; /* skip hhea, handled by hmtx */
+ case HB_OT_TAG_hmtx: return _subset<const OT::hmtx> (plan);
+ case HB_OT_TAG_vhea: return true; /* skip vhea, handled by vmtx */
+ case HB_OT_TAG_vmtx: return _subset<const OT::vmtx> (plan);
+ case HB_OT_TAG_maxp: return _subset<const OT::maxp> (plan);
+ case HB_OT_TAG_sbix: return _subset<const OT::sbix> (plan);
+ case HB_OT_TAG_loca: return true; /* skip loca, handled by glyf */
+ case HB_OT_TAG_cmap: return _subset<const OT::cmap> (plan);
+ case HB_OT_TAG_OS2 : return _subset<const OT::OS2 > (plan);
+ case HB_OT_TAG_post: return _subset<const OT::post> (plan);
+ case HB_OT_TAG_COLR: return _subset<const OT::COLR> (plan);
+ case HB_OT_TAG_CBLC: return _subset<const OT::CBLC> (plan);
+ case HB_OT_TAG_CBDT: return true; /* skip CBDT, handled by CBLC */
- switch (tag) {
- case HB_TAG ('c', 'v', 'a', 'r'): /* hint table, fallthrough */
- case HB_TAG ('c', 'v', 't', ' '): /* hint table, fallthrough */
- case HB_TAG ('f', 'p', 'g', 'm'): /* hint table, fallthrough */
- case HB_TAG ('p', 'r', 'e', 'p'): /* hint table, fallthrough */
- case HB_TAG ('h', 'd', 'm', 'x'): /* hint table, fallthrough */
- case HB_TAG ('V', 'D', 'M', 'X'): /* hint table, fallthrough */
- return plan->drop_hints;
+#ifndef HB_NO_SUBSET_CFF
+ case HB_OT_TAG_cff1: return _subset<const OT::cff1> (plan);
+ case HB_OT_TAG_cff2: return _subset<const OT::cff2> (plan);
+ case HB_OT_TAG_VORG: return _subset<const OT::VORG> (plan);
+#endif
-#ifdef HB_NO_SUBSET_LAYOUT
- // Drop Layout Tables if requested.
- case HB_OT_TAG_GDEF:
- case HB_OT_TAG_GPOS:
- case HB_OT_TAG_GSUB:
- case HB_TAG ('m', 'o', 'r', 'x'):
- case HB_TAG ('m', 'o', 'r', 't'):
- case HB_TAG ('k', 'e', 'r', 'x'):
- case HB_TAG ('k', 'e', 'r', 'n'):
- return true;
+#ifndef HB_NO_SUBSET_LAYOUT
+ case HB_OT_TAG_GDEF: return _subset<const OT::GDEF> (plan);
+ case HB_OT_TAG_GSUB: return _subset<const OT::GSUB> (plan);
+ case HB_OT_TAG_GPOS: return _subset<const OT::GPOS> (plan);
+ case HB_OT_TAG_gvar: return _subset<const OT::gvar> (plan);
+ case HB_OT_TAG_HVAR: return _subset<const OT::HVAR> (plan);
+ case HB_OT_TAG_VVAR: return _subset<const OT::VVAR> (plan);
#endif
- default:
- return false;
+ default:
+ hb_blob_t *source_table = hb_face_reference_table (plan->source, tag);
+ bool result = plan->add_table (tag, source_table);
+ hb_blob_destroy (source_table);
+ return result;
}
}
* Subsets a font according to provided input.
**/
hb_face_t *
-hb_subset (hb_face_t *source,
- hb_subset_input_t *input)
+hb_subset (hb_face_t *source, hb_subset_input_t *input)
{
if (unlikely (!input || !source)) return hb_face_get_empty ();
hb_subset_plan_t *plan = hb_subset_plan_create (source, input);
- hb_tag_t table_tags[32];
- unsigned int offset = 0, count;
- bool success = true;
hb_set_t tags_set;
- do {
- count = ARRAY_LENGTH (table_tags);
- hb_face_get_table_tags (source, offset, &count, table_tags);
- for (unsigned int i = 0; i < count; i++)
+ bool success = true;
+ hb_tag_t table_tags[32];
+ unsigned offset = 0, num_tables = ARRAY_LENGTH (table_tags);
+ while ((hb_face_get_table_tags (source, offset, &num_tables, table_tags), num_tables))
+ {
+ for (unsigned i = 0; i < num_tables; ++i)
{
hb_tag_t tag = table_tags[i];
- if (_should_drop_table (plan, tag) && !tags_set.has (tag))
- {
- DEBUG_MSG(SUBSET, nullptr, "drop %c%c%c%c", HB_UNTAG (tag));
- continue;
- }
+ if (_should_drop_table (plan, tag) && !tags_set.has (tag)) continue;
tags_set.add (tag);
- success = success && _subset_table (plan, tag);
+ success = _subset_table (plan, tag);
+ if (unlikely (!success)) goto end;
}
- offset += count;
- } while (success && count == ARRAY_LENGTH (table_tags));
+ offset += num_tables;
+ }
+end:
hb_face_t *result = success ? hb_face_reference (plan->dest) : hb_face_get_empty ();
hb_subset_plan_destroy (plan);
projects / platform / upstream / harfbuzz.git / blobdiff