From: Behdad Esfahbod <behdad@behdad.org>
Date: Sun, 26 Aug 2018 08:25:54 +0000 (-0700)
Subject: [ot-face] Port GDEF to unified table accelerator model as well
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4096fbe487d90de04020e32e8487295ecd4d8836;p=platform%2Fupstream%2FlibHarfBuzzSharp.git

[ot-face] Port GDEF to unified table accelerator model as well
---

diff --git a/src/hb-ot-face.cc b/src/hb-ot-face.cc
index 52411d5..ffac3d0 100644
--- a/src/hb-ot-face.cc
+++ b/src/hb-ot-face.cc
@@ -27,109 +27,6 @@
 #include "hb-ot-face.hh"
 
 
-static bool
-_hb_ot_blacklist_gdef (unsigned int gdef_len,
-		       unsigned int gsub_len,
-		       unsigned int gpos_len)
-{
-  /* The ugly business of blacklisting individual fonts' tables happen here!
-   * See this thread for why we finally had to bend in and do this:
-   * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
-   *
-   * In certain versions of Times New Roman Italic and Bold Italic,
-   * ASCII double quotation mark U+0022 has wrong glyph class 3 (mark)
-   * in GDEF.  Many versions of Tahoma have bad GDEF tables that
-   * incorrectly classify some spacing marks such as certain IPA
-   * symbols as glyph class 3. So do older versions of Microsoft
-   * Himalaya, and the version of Cantarell shipped by Ubuntu 16.04.
-   *
-   * Nuke the GDEF tables of to avoid unwanted width-zeroing.
-   *
-   * See https://bugzilla.mozilla.org/show_bug.cgi?id=1279925
-   *     https://bugzilla.mozilla.org/show_bug.cgi?id=1279693
-   *     https://bugzilla.mozilla.org/show_bug.cgi?id=1279875
-   */
-#define ENCODE(x,y,z) ((int64_t) (x) << 32 | (int64_t) (y) << 16 | (z))
-  switch ENCODE(gdef_len, gsub_len, gpos_len)
-  {
-    /* sha1sum:c5ee92f0bca4bfb7d06c4d03e8cf9f9cf75d2e8a Windows 7? timesi.ttf */
-    case ENCODE (442, 2874, 42038):
-    /* sha1sum:37fc8c16a0894ab7b749e35579856c73c840867b Windows 7? timesbi.ttf */
-    case ENCODE (430, 2874, 40662):
-    /* sha1sum:19fc45110ea6cd3cdd0a5faca256a3797a069a80 Windows 7 timesi.ttf */
-    case ENCODE (442, 2874, 39116):
-    /* sha1sum:6d2d3c9ed5b7de87bc84eae0df95ee5232ecde26 Windows 7 timesbi.ttf */
-    case ENCODE (430, 2874, 39374):
-    /* sha1sum:8583225a8b49667c077b3525333f84af08c6bcd8 OS X 10.11.3 Times New Roman Italic.ttf */
-    case ENCODE (490, 3046, 41638):
-    /* sha1sum:ec0f5a8751845355b7c3271d11f9918a966cb8c9 OS X 10.11.3 Times New Roman Bold Italic.ttf */
-    case ENCODE (478, 3046, 41902):
-    /* sha1sum:96eda93f7d33e79962451c6c39a6b51ee893ce8c  tahoma.ttf from Windows 8 */
-    case ENCODE (898, 12554, 46470):
-    /* sha1sum:20928dc06014e0cd120b6fc942d0c3b1a46ac2bc  tahomabd.ttf from Windows 8 */
-    case ENCODE (910, 12566, 47732):
-    /* sha1sum:4f95b7e4878f60fa3a39ca269618dfde9721a79e  tahoma.ttf from Windows 8.1 */
-    case ENCODE (928, 23298, 59332):
-    /* sha1sum:6d400781948517c3c0441ba42acb309584b73033  tahomabd.ttf from Windows 8.1 */
-    case ENCODE (940, 23310, 60732):
-    /* tahoma.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
-    case ENCODE (964, 23836, 60072):
-    /* tahomabd.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
-    case ENCODE (976, 23832, 61456):
-    /* sha1sum:e55fa2dfe957a9f7ec26be516a0e30b0c925f846  tahoma.ttf from Windows 10 */
-    case ENCODE (994, 24474, 60336):
-    /* sha1sum:7199385abb4c2cc81c83a151a7599b6368e92343  tahomabd.ttf from Windows 10 */
-    case ENCODE (1006, 24470, 61740):
-    /* tahoma.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
-    case ENCODE (1006, 24576, 61346):
-    /* tahomabd.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
-    case ENCODE (1018, 24572, 62828):
-    /* sha1sum:b9c84d820c49850d3d27ec498be93955b82772b5  tahoma.ttf from Windows 10 AU */
-    case ENCODE (1006, 24576, 61352):
-    /* sha1sum:2bdfaab28174bdadd2f3d4200a30a7ae31db79d2  tahomabd.ttf from Windows 10 AU */
-    case ENCODE (1018, 24572, 62834):
-    /* sha1sum:b0d36cf5a2fbe746a3dd277bffc6756a820807a7  Tahoma.ttf from Mac OS X 10.9 */
-    case ENCODE (832, 7324, 47162):
-    /* sha1sum:12fc4538e84d461771b30c18b5eb6bd434e30fba  Tahoma Bold.ttf from Mac OS X 10.9 */
-    case ENCODE (844, 7302, 45474):
-    /* sha1sum:eb8afadd28e9cf963e886b23a30b44ab4fd83acc  himalaya.ttf from Windows 7 */
-    case ENCODE (180, 13054, 7254):
-    /* sha1sum:73da7f025b238a3f737aa1fde22577a6370f77b0  himalaya.ttf from Windows 8 */
-    case ENCODE (192, 12638, 7254):
-    /* sha1sum:6e80fd1c0b059bbee49272401583160dc1e6a427  himalaya.ttf from Windows 8.1 */
-    case ENCODE (192, 12690, 7254):
-    /* 8d9267aea9cd2c852ecfb9f12a6e834bfaeafe44  cantarell-fonts-0.0.21/otf/Cantarell-Regular.otf */
-    /* 983988ff7b47439ab79aeaf9a45bd4a2c5b9d371  cantarell-fonts-0.0.21/otf/Cantarell-Oblique.otf */
-    case ENCODE (188, 248, 3852):
-    /* 2c0c90c6f6087ffbfea76589c93113a9cbb0e75f  cantarell-fonts-0.0.21/otf/Cantarell-Bold.otf */
-    /* 55461f5b853c6da88069ffcdf7f4dd3f8d7e3e6b  cantarell-fonts-0.0.21/otf/Cantarell-Bold-Oblique.otf */
-    case ENCODE (188, 264, 3426):
-    /* d125afa82a77a6475ac0e74e7c207914af84b37a padauk-2.80/Padauk.ttf RHEL 7.2 */
-    case ENCODE (1058, 47032, 11818):
-    /* 0f7b80437227b90a577cc078c0216160ae61b031 padauk-2.80/Padauk-Bold.ttf RHEL 7.2*/
-    case ENCODE (1046, 47030, 12600):
-    /* d3dde9aa0a6b7f8f6a89ef1002e9aaa11b882290 padauk-2.80/Padauk.ttf Ubuntu 16.04 */
-    case ENCODE (1058, 71796, 16770):
-    /* 5f3c98ccccae8a953be2d122c1b3a77fd805093f padauk-2.80/Padauk-Bold.ttf Ubuntu 16.04 */
-    case ENCODE (1046, 71790, 17862):
-    /* 6c93b63b64e8b2c93f5e824e78caca555dc887c7 padauk-2.80/Padauk-book.ttf */
-    case ENCODE (1046, 71788, 17112):
-    /* d89b1664058359b8ec82e35d3531931125991fb9 padauk-2.80/Padauk-bookbold.ttf */
-    case ENCODE (1058, 71794, 17514):
-    /* 824cfd193aaf6234b2b4dc0cf3c6ef576c0d00ef padauk-3.0/Padauk-book.ttf */
-    case ENCODE (1330, 109904, 57938):
-    /* 91fcc10cf15e012d27571e075b3b4dfe31754a8a padauk-3.0/Padauk-bookbold.ttf */
-    case ENCODE (1330, 109904, 58972):
-    /* sha1sum: c26e41d567ed821bed997e937bc0c41435689e85  Padauk.ttf
-     *  "Padauk Regular" "Version 2.5", see https://crbug.com/681813 */
-    case ENCODE (1004, 59092, 14836):
-      return true;
-#undef ENCODE
-  }
-  return false;
-}
-
-
 void hb_ot_face_data_t::tables_t::init0 (hb_face_t *face)
 {
   this->face = face;
@@ -157,11 +54,6 @@ _hb_ot_face_data_create (hb_face_t *face)
 
   data->table.init0 (face);
 
-  if (unlikely (_hb_ot_blacklist_gdef (data->table.GDEF.get_blob ()->length,
-				       data->table.GSUB->blob->length,
-				       data->table.GPOS->blob->length)))
-    data->table.GDEF.set_stored (hb_blob_get_empty ());
-
   return data;
 }
 
diff --git a/src/hb-ot-face.hh b/src/hb-ot-face.hh
index dd17fbc..6e7ff2c 100644
--- a/src/hb-ot-face.hh
+++ b/src/hb-ot-face.hh
@@ -56,7 +56,6 @@
  * This is as good as any place. */
 #define HB_OT_LAYOUT_TABLES \
     /* OpenType shaping. */ \
-    HB_OT_LAYOUT_TABLE(OT, GDEF) \
     HB_OT_LAYOUT_TABLE(OT, JSTF) \
     HB_OT_LAYOUT_TABLE(OT, BASE) \
     /* AAT shaping. */ \
@@ -71,6 +70,7 @@
     /* OpenType math. */ \
     HB_OT_LAYOUT_TABLE(OT, MATH) \
     /* OpenType fundamentals. */ \
+    HB_OT_LAYOUT_ACCELERATOR(OT, GDEF) \
     HB_OT_LAYOUT_ACCELERATOR(OT, GSUB) \
     HB_OT_LAYOUT_ACCELERATOR(OT, GPOS) \
     HB_OT_LAYOUT_ACCELERATOR(OT, cmap) \
diff --git a/src/hb-ot-layout-gdef-table.hh b/src/hb-ot-layout-gdef-table.hh
index 637f7f5..950b654 100644
--- a/src/hb-ot-layout-gdef-table.hh
+++ b/src/hb-ot-layout-gdef-table.hh
@@ -337,6 +337,110 @@ struct MarkGlyphSets
  * https://docs.microsoft.com/en-us/typography/opentype/spec/gdef
  */
 
+static bool
+_hb_ot_blacklist_gdef (unsigned int gdef_len,
+		       unsigned int gsub_len,
+		       unsigned int gpos_len)
+{
+  /* The ugly business of blacklisting individual fonts' tables happen here!
+   * See this thread for why we finally had to bend in and do this:
+   * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
+   *
+   * In certain versions of Times New Roman Italic and Bold Italic,
+   * ASCII double quotation mark U+0022 has wrong glyph class 3 (mark)
+   * in GDEF.  Many versions of Tahoma have bad GDEF tables that
+   * incorrectly classify some spacing marks such as certain IPA
+   * symbols as glyph class 3. So do older versions of Microsoft
+   * Himalaya, and the version of Cantarell shipped by Ubuntu 16.04.
+   *
+   * Nuke the GDEF tables of to avoid unwanted width-zeroing.
+   *
+   * See https://bugzilla.mozilla.org/show_bug.cgi?id=1279925
+   *     https://bugzilla.mozilla.org/show_bug.cgi?id=1279693
+   *     https://bugzilla.mozilla.org/show_bug.cgi?id=1279875
+   */
+#define ENCODE(x,y,z) ((int64_t) (x) << 32 | (int64_t) (y) << 16 | (z))
+  switch ENCODE(gdef_len, gsub_len, gpos_len)
+  {
+    /* sha1sum:c5ee92f0bca4bfb7d06c4d03e8cf9f9cf75d2e8a Windows 7? timesi.ttf */
+    case ENCODE (442, 2874, 42038):
+    /* sha1sum:37fc8c16a0894ab7b749e35579856c73c840867b Windows 7? timesbi.ttf */
+    case ENCODE (430, 2874, 40662):
+    /* sha1sum:19fc45110ea6cd3cdd0a5faca256a3797a069a80 Windows 7 timesi.ttf */
+    case ENCODE (442, 2874, 39116):
+    /* sha1sum:6d2d3c9ed5b7de87bc84eae0df95ee5232ecde26 Windows 7 timesbi.ttf */
+    case ENCODE (430, 2874, 39374):
+    /* sha1sum:8583225a8b49667c077b3525333f84af08c6bcd8 OS X 10.11.3 Times New Roman Italic.ttf */
+    case ENCODE (490, 3046, 41638):
+    /* sha1sum:ec0f5a8751845355b7c3271d11f9918a966cb8c9 OS X 10.11.3 Times New Roman Bold Italic.ttf */
+    case ENCODE (478, 3046, 41902):
+    /* sha1sum:96eda93f7d33e79962451c6c39a6b51ee893ce8c  tahoma.ttf from Windows 8 */
+    case ENCODE (898, 12554, 46470):
+    /* sha1sum:20928dc06014e0cd120b6fc942d0c3b1a46ac2bc  tahomabd.ttf from Windows 8 */
+    case ENCODE (910, 12566, 47732):
+    /* sha1sum:4f95b7e4878f60fa3a39ca269618dfde9721a79e  tahoma.ttf from Windows 8.1 */
+    case ENCODE (928, 23298, 59332):
+    /* sha1sum:6d400781948517c3c0441ba42acb309584b73033  tahomabd.ttf from Windows 8.1 */
+    case ENCODE (940, 23310, 60732):
+    /* tahoma.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+    case ENCODE (964, 23836, 60072):
+    /* tahomabd.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+    case ENCODE (976, 23832, 61456):
+    /* sha1sum:e55fa2dfe957a9f7ec26be516a0e30b0c925f846  tahoma.ttf from Windows 10 */
+    case ENCODE (994, 24474, 60336):
+    /* sha1sum:7199385abb4c2cc81c83a151a7599b6368e92343  tahomabd.ttf from Windows 10 */
+    case ENCODE (1006, 24470, 61740):
+    /* tahoma.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+    case ENCODE (1006, 24576, 61346):
+    /* tahomabd.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+    case ENCODE (1018, 24572, 62828):
+    /* sha1sum:b9c84d820c49850d3d27ec498be93955b82772b5  tahoma.ttf from Windows 10 AU */
+    case ENCODE (1006, 24576, 61352):
+    /* sha1sum:2bdfaab28174bdadd2f3d4200a30a7ae31db79d2  tahomabd.ttf from Windows 10 AU */
+    case ENCODE (1018, 24572, 62834):
+    /* sha1sum:b0d36cf5a2fbe746a3dd277bffc6756a820807a7  Tahoma.ttf from Mac OS X 10.9 */
+    case ENCODE (832, 7324, 47162):
+    /* sha1sum:12fc4538e84d461771b30c18b5eb6bd434e30fba  Tahoma Bold.ttf from Mac OS X 10.9 */
+    case ENCODE (844, 7302, 45474):
+    /* sha1sum:eb8afadd28e9cf963e886b23a30b44ab4fd83acc  himalaya.ttf from Windows 7 */
+    case ENCODE (180, 13054, 7254):
+    /* sha1sum:73da7f025b238a3f737aa1fde22577a6370f77b0  himalaya.ttf from Windows 8 */
+    case ENCODE (192, 12638, 7254):
+    /* sha1sum:6e80fd1c0b059bbee49272401583160dc1e6a427  himalaya.ttf from Windows 8.1 */
+    case ENCODE (192, 12690, 7254):
+    /* 8d9267aea9cd2c852ecfb9f12a6e834bfaeafe44  cantarell-fonts-0.0.21/otf/Cantarell-Regular.otf */
+    /* 983988ff7b47439ab79aeaf9a45bd4a2c5b9d371  cantarell-fonts-0.0.21/otf/Cantarell-Oblique.otf */
+    case ENCODE (188, 248, 3852):
+    /* 2c0c90c6f6087ffbfea76589c93113a9cbb0e75f  cantarell-fonts-0.0.21/otf/Cantarell-Bold.otf */
+    /* 55461f5b853c6da88069ffcdf7f4dd3f8d7e3e6b  cantarell-fonts-0.0.21/otf/Cantarell-Bold-Oblique.otf */
+    case ENCODE (188, 264, 3426):
+    /* d125afa82a77a6475ac0e74e7c207914af84b37a padauk-2.80/Padauk.ttf RHEL 7.2 */
+    case ENCODE (1058, 47032, 11818):
+    /* 0f7b80437227b90a577cc078c0216160ae61b031 padauk-2.80/Padauk-Bold.ttf RHEL 7.2*/
+    case ENCODE (1046, 47030, 12600):
+    /* d3dde9aa0a6b7f8f6a89ef1002e9aaa11b882290 padauk-2.80/Padauk.ttf Ubuntu 16.04 */
+    case ENCODE (1058, 71796, 16770):
+    /* 5f3c98ccccae8a953be2d122c1b3a77fd805093f padauk-2.80/Padauk-Bold.ttf Ubuntu 16.04 */
+    case ENCODE (1046, 71790, 17862):
+    /* 6c93b63b64e8b2c93f5e824e78caca555dc887c7 padauk-2.80/Padauk-book.ttf */
+    case ENCODE (1046, 71788, 17112):
+    /* d89b1664058359b8ec82e35d3531931125991fb9 padauk-2.80/Padauk-bookbold.ttf */
+    case ENCODE (1058, 71794, 17514):
+    /* 824cfd193aaf6234b2b4dc0cf3c6ef576c0d00ef padauk-3.0/Padauk-book.ttf */
+    case ENCODE (1330, 109904, 57938):
+    /* 91fcc10cf15e012d27571e075b3b4dfe31754a8a padauk-3.0/Padauk-bookbold.ttf */
+    case ENCODE (1330, 109904, 58972):
+    /* sha1sum: c26e41d567ed821bed997e937bc0c41435689e85  Padauk.ttf
+     *  "Padauk Regular" "Version 2.5", see https://crbug.com/681813 */
+    case ENCODE (1004, 59092, 14836):
+      return true;
+#undef ENCODE
+  }
+  return false;
+}
+
+
+
 struct GDEF
 {
   static const hb_tag_t tableTag	= HB_OT_TAG_GDEF;
@@ -420,6 +524,31 @@ struct GDEF
     }
   }
 
+  struct accelerator_t
+  {
+    inline void init (hb_face_t *face)
+    {
+      this->blob = hb_sanitize_context_t().reference_table<GDEF> (face);
+
+      if (unlikely (_hb_ot_blacklist_gdef (this->blob->length,
+					   _get_gsub_blob (face)->length,
+					   _get_gpos_blob (face)->length)))
+      {
+	hb_blob_destroy (this->blob);
+	this->blob = hb_blob_get_empty ();
+      }
+
+      table = this->blob->as<GDEF> ();
+    }
+
+    inline void fini (void)
+    {
+      hb_blob_destroy (this->blob);
+    }
+
+    hb_blob_t *blob;
+    const GDEF *table;
+  };
 
   protected:
   FixedVersion<>version;		/* Version of the GDEF table--currently
diff --git a/src/hb-ot-layout.cc b/src/hb-ot-layout.cc
index ffbb38b..a248232 100644
--- a/src/hb-ot-layout.cc
+++ b/src/hb-ot-layout.cc
@@ -60,7 +60,13 @@ inline const OT::GDEF&
 _get_gdef (hb_face_t *face)
 {
   if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GDEF);
-  return *hb_ot_face_data (face)->table.GDEF;
+  return *hb_ot_face_data (face)->table.GDEF->table;
+}
+hb_blob_t *
+_get_gsub_blob (hb_face_t *face)
+{
+  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return hb_blob_get_empty ();
+  return hb_ot_face_data (face)->table.GSUB->blob;
 }
 inline const OT::GSUB&
 _get_gsub (hb_face_t *face)
@@ -68,6 +74,12 @@ _get_gsub (hb_face_t *face)
   if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GSUB);
   return *hb_ot_face_data (face)->table.GSUB->table;
 }
+hb_blob_t *
+_get_gpos_blob (hb_face_t *face)
+{
+  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return hb_blob_get_empty ();
+  return hb_ot_face_data (face)->table.GPOS->blob;
+}
 inline const OT::GPOS&
 _get_gpos (hb_face_t *face)
 {
diff --git a/src/hb-ot-layout.hh b/src/hb-ot-layout.hh
index ea66d10..03ae9b7 100644
--- a/src/hb-ot-layout.hh
+++ b/src/hb-ot-layout.hh
@@ -46,10 +46,13 @@ namespace OT
 
 HB_INTERNAL const OT::GDEF&
 _get_gdef (hb_face_t *face);
-
+HB_INTERNAL hb_blob_t *
+_get_gsub_blob (hb_face_t *face);
 HB_INTERNAL const OT::GSUB&
 _get_gsub (hb_face_t *face);
 
+HB_INTERNAL hb_blob_t *
+_get_gpos_blob (hb_face_t *face);
 HB_INTERNAL const OT::GPOS&
 _get_gpos (hb_face_t *face);