[HarfBuzz] harfbuzz: Branch 'master' - 10 commits

Behdad Esfahbod behdad at kemper.freedesktop.org
Mon Oct 29 18:42:13 UTC 2018


 src/Makefile.am              |   15 +
 src/gen-def.py               |    9 -
 src/hb-open-type.hh          |   11 +
 src/hb-ot-color-svg-table.hh |    7 
 src/hb-ot-color.h            |    4 
 src/hb-ot-name.cc            |    4 
 src/hb.hh                    |    6 
 src/test-ot-color.cc         |  347 +++++++++++++++++++++++++++++++++++++++++++
 test/api/Makefile.am         |    2 
 9 files changed, 390 insertions(+), 15 deletions(-)

New commits:
commit a256a92b3fbb72487cf073a63e646eab952b42ed
Author: Behdad Esfahbod <behdad at behdad.org>
Date:   Mon Oct 29 11:25:35 2018 -0700

    Make Array types uncopyable-unassignable
    
    Finally!  Catches hard-to-find errors like this:
    
    -    const SortedArrayOf<SVGDocumentIndexEntry> docs = this+svgDocEntries;
    +    const SortedArrayOf<SVGDocumentIndexEntry> &docs = this+svgDocEntries;
    
    We implement this for our array types.  This, in turn, trickles down
    into all types that embed the arrays.  So, as long as we define all
    open-ended structs in terms of Array types (all can be done using
    UnsizedArrayOf), this achieves the goal of making uncopyable all
    structs that are variable-sized.  Yay!

diff --git a/src/hb-open-type.hh b/src/hb-open-type.hh
index 6e545a6d..ee452864 100644
--- a/src/hb-open-type.hh
+++ b/src/hb-open-type.hh
@@ -335,6 +335,8 @@ static inline Type& operator + (Base &base, OffsetTo<Type, OffsetType, has_null>
 template <typename Type>
 struct UnsizedArrayOf
 {
+  HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE (UnsizedArrayOf, Type);
+
   inline const Type& operator [] (unsigned int i) const { return arrayZ[i]; }
   inline Type& operator [] (unsigned int i) { return arrayZ[i]; }
 
@@ -424,6 +426,8 @@ struct UnsizedOffsetListOf : UnsizedOffsetArrayOf<Type, OffsetType, has_null>
 template <typename Type, typename LenType=HBUINT16>
 struct ArrayOf
 {
+  HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE2 (ArrayOf, Type, LenType);
+
   inline const Type *sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const
   {
     unsigned int count = len;
@@ -589,6 +593,8 @@ struct OffsetListOf : OffsetArrayOf<Type>
 template <typename Type, typename LenType=HBUINT16>
 struct HeadlessArrayOf
 {
+  HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE2 (HeadlessArrayOf, Type, LenType);
+
   inline const Type& operator [] (unsigned int i) const
   {
     if (unlikely (i >= lenP1 || !i)) return Null(Type);
@@ -653,6 +659,8 @@ struct HeadlessArrayOf
 template <typename Type, typename LenType=HBUINT16>
 struct ArrayOfM1
 {
+  HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE2 (ArrayOfM1, Type, LenType);
+
   inline const Type& operator [] (unsigned int i) const
   {
     if (unlikely (i > lenM1)) return Null(Type);
@@ -757,6 +765,7 @@ struct BinSearchHeader
 template <typename Type, typename LenType=HBUINT16>
 struct BinSearchArrayOf : SortedArrayOf<Type, BinSearchHeader<LenType> > {};
 
+
 struct VarSizedBinSearchHeader
 {
 
@@ -782,6 +791,8 @@ struct VarSizedBinSearchHeader
 template <typename Type>
 struct VarSizedBinSearchArrayOf
 {
+  HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE (VarSizedBinSearchArrayOf, Type);
+
   inline const Type& operator [] (unsigned int i) const
   {
     if (unlikely (i >= header.nUnits)) return Null(Type);
diff --git a/src/hb.hh b/src/hb.hh
index ea474298..e5bec508 100644
--- a/src/hb.hh
+++ b/src/hb.hh
@@ -366,6 +366,12 @@ static_assert ((sizeof (hb_var_int_t) == 4), "");
 #define HB_DISALLOW_COPY_AND_ASSIGN(TypeName) \
   TypeName(const TypeName&); \
   void operator=(const TypeName&)
+#define HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE(TypeName, T) \
+  TypeName(const TypeName<T>&); \
+  void operator=(const TypeName<T>&)
+#define HB_DISALLOW_COPY_AND_ASSIGN_TEMPLATE2(TypeName, T1, T2) \
+  TypeName(const TypeName<T1, T2>&); \
+  void operator=(const TypeName<T1, T2>&)
 
 
 /*
commit 31cc1f74b7028ef88fa0e93e7f12166c7e06de8e
Author: Behdad Esfahbod <behdad at behdad.org>
Date:   Mon Oct 29 11:14:37 2018 -0700

    [svg] Minor

diff --git a/src/hb-ot-color-svg-table.hh b/src/hb-ot-color-svg-table.hh
index 7c342d01..bb4c4f75 100644
--- a/src/hb-ot-color-svg-table.hh
+++ b/src/hb-ot-color-svg-table.hh
@@ -50,10 +50,11 @@ struct SVGDocumentIndexEntry
 				    svgDocLength);
   }
 
-  inline bool sanitize (hb_sanitize_context_t *c) const
+  inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
   {
     TRACE_SANITIZE (this);
-    return_trace (c->check_struct (this));
+    return_trace (c->check_struct (this) &&
+		  svgDoc.sanitize (c, base, svgDocLength));
   }
 
   protected:
commit 1366bb9760d0f171f8f655e5739e74dfd2537652
Author: Behdad Esfahbod <behdad at behdad.org>
Date:   Mon Oct 29 11:01:25 2018 -0700

    Fix g-i warnings

diff --git a/src/hb-ot-color.h b/src/hb-ot-color.h
index 89935143..1cc04d4f 100644
--- a/src/hb-ot-color.h
+++ b/src/hb-ot-color.h
@@ -94,7 +94,9 @@ HB_EXTERN hb_bool_t
 hb_ot_color_has_layers (hb_face_t *face);
 
 /**
- * hb_ot_color_layer_t: Pairs of glyph and color index.
+ * hb_ot_color_layer_t:
+ *
+ * Pairs of glyph and color index.
  *
  * Since: REPLACEME
  **/
diff --git a/src/hb-ot-name.cc b/src/hb-ot-name.cc
index 2bf2ae58..e8aa3d8e 100644
--- a/src/hb-ot-name.cc
+++ b/src/hb-ot-name.cc
@@ -52,13 +52,13 @@ _get_name (hb_face_t *face)
 /**
  * hb_ot_name_list_names:
  * @face: font face.
- * @num_entries: (out) number of returned entries.
+ * @num_entries: (out): number of returned entries.
  *
  * Enumerates all available name IDs and language combinations. Returned
  * array is owned by the @face and should not be modified.  It can be
  * used as long as @face is alive.
  *
- * Returns: (out) (transfer none) (array length=num_entries) Array of available name entries.
+ * Returns: (out) (transfer none) (array length=num_entries): Array of available name entries.
  * Since: 2.1.0
  **/
 const hb_ot_name_entry_t *
commit ae802c2c6e001492f8f639e4c24546f0e21d86c7
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 13:42:14 2018 +0330

    [test-ot-color] Minor

diff --git a/src/test-ot-color.cc b/src/test-ot-color.cc
index 5312554a..2cb9b03b 100644
--- a/src/test-ot-color.cc
+++ b/src/test-ot-color.cc
@@ -74,7 +74,8 @@ png_dump (hb_face_t *face, unsigned int face_index)
 	strikes_count++;
 	blob_length = new_blob_length;
       }
-      strikes[strikes_count - 1] = ppem;
+      if (strikes_count != 0)
+	strikes[strikes_count - 1] = ppem;
       hb_blob_destroy (blob);
     }
     /* can't report the biggest strike correctly, and, we can't do anything about it */
commit 7170e35096f0afd084be1350d080695c70c65d40
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 13:11:01 2018 +0330

    Rename deprecated symbols list file name and clean it up (#1328)

diff --git a/src/Makefile.am b/src/Makefile.am
index a51048b7..fbd8f602 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -268,7 +268,7 @@ EXTRA_DIST += \
 CLEANFILES += $(pkgconfig_DATA)
 
 
-DEF_FILES = harfbuzz.def harfbuzz-subset.def harfbuzz-icu.def harfbuzz-deprecated.def
+DEF_FILES = harfbuzz.def harfbuzz-subset.def harfbuzz-icu.def harfbuzz-deprecated-symbols.txt
 if HAVE_GOBJECT
 DEF_FILES += harfbuzz-gobject.def
 endif
@@ -282,8 +282,8 @@ harfbuzz-icu.def: $(HB_ICU_headers)
 	$(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^
 harfbuzz-gobject.def: $(HB_GOBJECT_headers)
 	$(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^
-harfbuzz-deprecated.def: $(srcdir)/hb-deprecated.h
-	$(AM_V_GEN) $(srcdir)/gen-def.py "$@" $^
+harfbuzz-deprecated-symbols.txt: $(srcdir)/hb-deprecated.h
+	$(AM_V_GEN) PLAIN_LIST=1 $(srcdir)/gen-def.py "$@" $^
 
 
 GENERATORS = \
diff --git a/src/gen-def.py b/src/gen-def.py
index ba39eaae..9111c698 100755
--- a/src/gen-def.py
+++ b/src/gen-def.py
@@ -15,11 +15,10 @@ for h in header_paths:
 	if h.endswith (".h"):
 		with io.open (h, encoding='utf-8') as f: headers_content.append (f.read ())
 
-result = """EXPORTS
+symbols = "\n".join (sorted (re.findall (r"^hb_\w+(?= \()", "\n".join (headers_content), re.M)))
+
+result = symbols if os.environ.get('PLAIN_LIST', '') else """EXPORTS
 %s
-LIBRARY lib%s-0.dll""" % (
-	"\n".join (sorted (re.findall (r"^hb_\w+(?= \()", "\n".join (headers_content), re.M))),
-	output_file.replace ('.def', '')
-)
+LIBRARY lib%s-0.dll""" % (symbols, output_file.replace ('.def', ''))
 
 with open (output_file, "w") as f: f.write (result)
diff --git a/test/api/Makefile.am b/test/api/Makefile.am
index 45a34e64..c233a90e 100644
--- a/test/api/Makefile.am
+++ b/test/api/Makefile.am
@@ -167,7 +167,7 @@ symbols-tested.txt: $(TEST_PROGS)
 	$(AM_V_GEN)$(top_builddir)/libtool --mode=execute nm $^ \
 	| grep ' U hb_' | sed 's/.* U hb_/hb_/' \
 	| sort | uniq > $@.tmp && mv $@.tmp $@
-symbols-tested-or-deprecated.txt: symbols-tested.txt $(top_builddir)/src/harfbuzz-deprecated.def
+symbols-tested-or-deprecated.txt: symbols-tested.txt $(top_builddir)/src/harfbuzz-deprecated-symbols.txt
 	$(AM_V_GEN)cat $^ | sort | uniq > $@.tmp; mv $@.tmp $@
 symbols-exported.txt: $(top_builddir)/src/.libs/libharfbuzz.so
 	$(AM_V_GEN)$(top_builddir)/libtool --mode=execute nm $^ \
commit 1dfe964378e97e45eedf9db9b9a7f675fe38c0bf
Merge: f10252b4 9c692e5b
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 12:34:33 2018 +0330

    Merge pull request #1326 from ebraminio/test-ot-color
    
    Revive and rename dump-emoji to test-ot-color but use public APIs instead

commit 9c692e5b8d195d8e82538594d89865c609d708f3
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 11:36:11 2018 +0330

    [test-ot-color] Use public APIs on the tool

diff --git a/src/Makefile.am b/src/Makefile.am
index 0b9ae9dc..a51048b7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -377,6 +377,15 @@ test_would_substitute_SOURCES = test-would-substitute.cc
 test_would_substitute_CPPFLAGS = $(HBCFLAGS) $(FREETYPE_CFLAGS)
 test_would_substitute_LDADD = libharfbuzz.la $(HBLIBS) $(FREETYPE_LIBS)
 
+if HAVE_FREETYPE
+if HAVE_CAIRO_FT
+noinst_PROGRAMS += test-ot-color
+test_ot_color_SOURCES = test-ot-color.cc
+test_ot_color_CPPFLAGS = $(HBCFLAGS) $(FREETYPE_CFLAGS) $(CAIRO_FT_CFLAGS)
+test_ot_color_LDADD = libharfbuzz.la $(HBLIBS) $(FREETYPE_LIBS) $(CAIRO_LIBS) $(CAIRO_FT_LIBS)
+endif # HAVE_CAIRO_FT
+endif # HAVE_FREETYPE
+
 dist_check_SCRIPTS = \
 	check-c-linkage-decls.sh \
 	check-externs.sh \
diff --git a/src/test-ot-color.cc b/src/test-ot-color.cc
index e3cabc73..5312554a 100644
--- a/src/test-ot-color.cc
+++ b/src/test-ot-color.cc
@@ -23,12 +23,8 @@
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  */
 
-#include "hb-static.cc"
-#include "hb-ot-color-cbdt-table.hh"
-#include "hb-ot-color-colr-table.hh"
-#include "hb-ot-color-cpal-table.hh"
-#include "hb-ot-color-sbix-table.hh"
-#include "hb-ot-color-svg-table.hh"
+#include "hb.h"
+#include "hb-ot.h"
 
 #include "hb-ft.h"
 
@@ -40,71 +36,94 @@
 #include <cairo-ft.h>
 #include <cairo-svg.h>
 
-#ifdef HAVE_GLIB
-#include <glib.h>
-#endif
 #include <stdlib.h>
 #include <stdio.h>
 
 static void
-cbdt_callback (const uint8_t* data, unsigned int length,
-	       unsigned int group, unsigned int gid)
+png_dump (hb_face_t *face, unsigned int face_index)
 {
-  char output_path[255];
-  sprintf (output_path, "out/cbdt-%d-%d.png", group, gid);
-  FILE *f = fopen (output_path, "wb");
-  fwrite (data, 1, length, f);
-  fclose (f);
-}
+  unsigned glyph_count = hb_face_get_glyph_count (face);
+  hb_font_t *font = hb_font_create (face);
 
-static void
-sbix_dump (hb_face_t *face)
-{
-  OT::sbix::accelerator_t sbix;
-  sbix.init (face);
-  unsigned int length = 0;
-  unsigned int *available_ppems = sbix.get_available_ppems (&length);
-  unsigned int num_glyphs = face->num_glyphs;
-  for (unsigned int group = 0; group < length; group++)
-    for (unsigned int glyph_id = 0; glyph_id < num_glyphs; glyph_id++)
+  /* ugly hack, scans the font for strikes, not needed for regular clients */
+  #define STRIKES_MAX 20
+  unsigned int strikes_count = 0;
+  unsigned int strikes[STRIKES_MAX] = {0};
+  {
+    /* find a sample glyph */
+    unsigned int sample_glyph_id;
+    /* we don't care much about different strikes for different glyphs */
+    for (sample_glyph_id = 0; sample_glyph_id < glyph_count; sample_glyph_id++)
+    {
+      hb_blob_t *blob = hb_ot_color_glyph_reference_png (font, sample_glyph_id);
+      unsigned int blob_length = hb_blob_get_length (blob);
+      hb_blob_destroy (blob);
+      if (blob_length != 0)
+	break;
+    }
+    /* find strikes it has */
+    unsigned int upem = hb_face_get_upem (face);
+    unsigned int blob_length = 0;
+    for (unsigned int ppem = 1; ppem <= upem && strikes_count < STRIKES_MAX; ppem++)
     {
-      hb_blob_t *blob;
-      unsigned int ppem = available_ppems[group];
-      blob = sbix.reference_blob_for_glyph (glyph_id, ppem, ppem,
-					    HB_TAG('p','n','g',' '), nullptr, nullptr);
+      hb_font_set_ppem (font, ppem, ppem);
+      hb_blob_t *blob = hb_ot_color_glyph_reference_png (font, sample_glyph_id);
+      unsigned int new_blob_length = hb_blob_get_length (blob);
+      if (blob_length != new_blob_length)
+      {
+	strikes_count++;
+	blob_length = new_blob_length;
+      }
+      strikes[strikes_count - 1] = ppem;
+      hb_blob_destroy (blob);
+    }
+    /* can't report the biggest strike correctly, and, we can't do anything about it */
+  }
+  #undef STRIKES_MAX
+
+  for (unsigned int strike = 0; strike < strikes_count; strike++)
+    for (unsigned int glyph_id = 0; glyph_id < glyph_count; glyph_id++)
+    {
+      unsigned int ppem = strikes[strike];
+      hb_font_set_ppem (font, ppem, ppem);
+      hb_blob_t *blob = hb_ot_color_glyph_reference_png (font, glyph_id);
+
       if (hb_blob_get_length (blob) == 0) continue;
 
+      unsigned int length;
+      const char *data = hb_blob_get_data (blob, &length);
+
       char output_path[255];
-      sprintf (output_path, "out/sbix-%d-%d.png", ppem, glyph_id);
+      sprintf (output_path, "out/png-%d-%d-%d.png", glyph_id, strike, face_index);
+
       FILE *f = fopen (output_path, "wb");
-      unsigned int length;
-      const char* data = hb_blob_get_data (blob, &length);
       fwrite (data, 1, length, f);
       fclose (f);
+
+      hb_blob_destroy (blob);
     }
-  sbix.fini ();
+
+  hb_font_destroy (font);
 }
 
 static void
-svg_dump (hb_face_t *face)
+svg_dump (hb_face_t *face, unsigned int face_index)
 {
   unsigned glyph_count = hb_face_get_glyph_count (face);
 
-  OT::SVG::accelerator_t svg;
-  svg.init (face);
-
   for (unsigned int glyph_id = 0; glyph_id < glyph_count; glyph_id++)
   {
-    hb_blob_t *blob = svg.reference_blob_for_glyph (glyph_id);
+    hb_blob_t *blob = hb_ot_color_glyph_reference_svg (face, glyph_id);
 
     if (hb_blob_get_length (blob) == 0) continue;
 
     unsigned int length;
     const char *data = hb_blob_get_data (blob, &length);
 
-    char output_path[256];
-    sprintf (output_path, "out/svg-%d.svg%s",
+    char output_path[255];
+    sprintf (output_path, "out/svg-%d-%d.svg%s",
 	     glyph_id,
+	     face_index,
 	     // append "z" if the content is gzipped, https://stackoverflow.com/a/6059405
 	     (length > 2 && (data[0] == '\x1F') && (data[1] == '\x8B')) ? "z" : "");
 
@@ -114,12 +133,10 @@ svg_dump (hb_face_t *face)
 
     hb_blob_destroy (blob);
   }
-
-  svg.fini ();
 }
 
 static void
-colr_cpal_dump (hb_face_t *face, cairo_font_face_t *cairo_face)
+layered_glyph_dump (hb_face_t *face, cairo_font_face_t *cairo_face, unsigned int face_index)
 {
   unsigned int upem = hb_face_get_upem (face);
 
@@ -171,11 +188,7 @@ colr_cpal_dump (hb_face_t *face, cairo_font_face_t *cairo_face)
 	hb_ot_color_palette_get_colors (face, palette, 0, &num_colors, colors);
 	if (num_colors)
 	{
-	  // If we have more than one palette, use a simpler naming
-	  if (palette_count == 1)
-	    sprintf (output_path, "out/colr-%d.svg", gid);
-	  else
-	    sprintf (output_path, "out/colr-%d-%d.svg", gid, palette);
+	  sprintf (output_path, "out/colr-%d-%d-%d.svg", gid, palette, face_index);
 
 	  cairo_surface_t *surface = cairo_svg_surface_create (output_path, extents.width, extents.height);
 	  cairo_t *cr = cairo_create (surface);
@@ -213,10 +226,8 @@ colr_cpal_dump (hb_face_t *face, cairo_font_face_t *cairo_face)
 
 static void
 dump_glyphs (cairo_font_face_t *cairo_face, unsigned int upem,
-	     unsigned int num_glyphs)
+	     unsigned int num_glyphs, unsigned int face_index)
 {
-  // Dump every glyph available on the font
-  return; // disabled for now
   for (unsigned int i = 0; i < num_glyphs; ++i)
   {
     cairo_text_extents_t extents;
@@ -244,7 +255,7 @@ dump_glyphs (cairo_font_face_t *cairo_face, unsigned int upem,
     // Render
     {
       char output_path[255];
-      sprintf (output_path, "out/%d.svg", i);
+      sprintf (output_path, "out/%d-%d.svg", face_index, i);
       cairo_surface_t *surface = cairo_svg_surface_create (output_path, extents.width, extents.height);
       cairo_t *cr = cairo_create (surface);
       cairo_set_font_face (cr, cairo_face);
@@ -269,14 +280,14 @@ main (int argc, char **argv)
   }
 
 
-  FILE *font_name_file = fopen ("out/_font_name_file.txt", "r");
+  FILE *font_name_file = fopen ("out/.dumped_font_name", "r");
   if (font_name_file != nullptr)
   {
     fprintf (stderr, "Purge or move ./out folder in order to run a new dump\n");
     exit (1);
   }
 
-  font_name_file = fopen ("out/_font_name_file.txt", "w");
+  font_name_file = fopen ("out/.dumped_font_name", "w");
   if (font_name_file == nullptr)
   {
     fprintf (stderr, "./out is not accessible as a folder, create it please\n");
@@ -286,36 +297,49 @@ main (int argc, char **argv)
   fclose (font_name_file);
 
   hb_blob_t *blob = hb_blob_create_from_file (argv[1]);
-  hb_face_t *face = hb_face_create (blob, 0);
-  hb_font_t *font = hb_font_create (face);
+  unsigned int num_faces = hb_face_count (blob);
+  if (num_faces == 0)
+  {
+    fprintf (stderr, "error: The file (%s) was corrupted, empty or not found", argv[1]);
+    exit (1);
+  }
 
-  OT::CBDT::accelerator_t cbdt;
-  cbdt.init (face);
-  cbdt.dump (cbdt_callback);
-  cbdt.fini ();
+  for (unsigned int face_index = 0; face_index < hb_face_count (blob); face_index++)
+  {
+    hb_face_t *face = hb_face_create (blob, face_index);
+    hb_font_t *font = hb_font_create (face);
 
-  sbix_dump (face);
+    if (hb_ot_color_has_png (face)) printf ("Dumping png (cbdt/sbix)...\n");
+    png_dump (face, face_index);
 
-  if (hb_ot_color_has_svg (face))
-    svg_dump (face);
+    if (hb_ot_color_has_svg (face)) printf ("Dumping svg...\n");
+    svg_dump (face, face_index);
 
-  cairo_font_face_t *cairo_face;
-  {
-    FT_Library library;
-    FT_Init_FreeType (&library);
-    FT_Face ftface;
-    FT_New_Face (library, argv[1], 0, &ftface);
-    cairo_face = cairo_ft_font_face_create_for_ft_face (ftface, 0);
-  }
-  if (hb_ot_color_has_layers (face) && hb_ot_color_has_palettes (face))
-    colr_cpal_dump (face, cairo_face);
+    cairo_font_face_t *cairo_face;
+    {
+      FT_Library library;
+      FT_Init_FreeType (&library);
+      FT_Face ft_face;
+      FT_New_Face (library, argv[1], 0, &ft_face);
+      cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0);
+    }
+    if (hb_ot_color_has_layers (face) && hb_ot_color_has_palettes (face))
+      printf ("Dumping layered color glyphs...\n");
+    layered_glyph_dump (face, cairo_face, face_index);
 
-  unsigned int num_glyphs = hb_face_get_glyph_count (face);
-  unsigned int upem = hb_face_get_upem (face);
-  dump_glyphs (cairo_face, upem, num_glyphs);
+    unsigned int num_glyphs = hb_face_get_glyph_count (face);
+    unsigned int upem = hb_face_get_upem (face);
+
+    // disabled when color font as cairo rendering of NotoColorEmoji is soooo slow
+    if (!hb_ot_color_has_layers (face) &&
+        !hb_ot_color_has_png (face) &&
+        !hb_ot_color_has_svg (face))
+      dump_glyphs (cairo_face, upem, num_glyphs, face_index);
+
+    hb_font_destroy (font);
+    hb_face_destroy (face);
+    }
 
-  hb_font_destroy (font);
-  hb_face_destroy (face);
   hb_blob_destroy (blob);
 
   return 0;
commit fb525f8943b43fe241424c93461bee2b94af28e3
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 09:43:17 2018 +0330

    Rename dump-emoji to test-ot-color

diff --git a/src/dump-emoji.cc b/src/test-ot-color.cc
similarity index 100%
rename from src/dump-emoji.cc
rename to src/test-ot-color.cc
commit 81bcf47e9ea7eb447ff95ce48ecbc5c4439cb53f
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 09:40:39 2018 +0330

    Revive dump-emoji

diff --git a/src/dump-emoji.cc b/src/dump-emoji.cc
new file mode 100644
index 00000000..e3cabc73
--- /dev/null
+++ b/src/dump-emoji.cc
@@ -0,0 +1,322 @@
+/*
+ * Copyright © 2018  Ebrahim Byagowi
+ * Copyright © 2018  Khaled Hosny
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+#include "hb-static.cc"
+#include "hb-ot-color-cbdt-table.hh"
+#include "hb-ot-color-colr-table.hh"
+#include "hb-ot-color-cpal-table.hh"
+#include "hb-ot-color-sbix-table.hh"
+#include "hb-ot-color-svg-table.hh"
+
+#include "hb-ft.h"
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_GLYPH_H
+
+#include <cairo.h>
+#include <cairo-ft.h>
+#include <cairo-svg.h>
+
+#ifdef HAVE_GLIB
+#include <glib.h>
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+
+static void
+cbdt_callback (const uint8_t* data, unsigned int length,
+	       unsigned int group, unsigned int gid)
+{
+  char output_path[255];
+  sprintf (output_path, "out/cbdt-%d-%d.png", group, gid);
+  FILE *f = fopen (output_path, "wb");
+  fwrite (data, 1, length, f);
+  fclose (f);
+}
+
+static void
+sbix_dump (hb_face_t *face)
+{
+  OT::sbix::accelerator_t sbix;
+  sbix.init (face);
+  unsigned int length = 0;
+  unsigned int *available_ppems = sbix.get_available_ppems (&length);
+  unsigned int num_glyphs = face->num_glyphs;
+  for (unsigned int group = 0; group < length; group++)
+    for (unsigned int glyph_id = 0; glyph_id < num_glyphs; glyph_id++)
+    {
+      hb_blob_t *blob;
+      unsigned int ppem = available_ppems[group];
+      blob = sbix.reference_blob_for_glyph (glyph_id, ppem, ppem,
+					    HB_TAG('p','n','g',' '), nullptr, nullptr);
+      if (hb_blob_get_length (blob) == 0) continue;
+
+      char output_path[255];
+      sprintf (output_path, "out/sbix-%d-%d.png", ppem, glyph_id);
+      FILE *f = fopen (output_path, "wb");
+      unsigned int length;
+      const char* data = hb_blob_get_data (blob, &length);
+      fwrite (data, 1, length, f);
+      fclose (f);
+    }
+  sbix.fini ();
+}
+
+static void
+svg_dump (hb_face_t *face)
+{
+  unsigned glyph_count = hb_face_get_glyph_count (face);
+
+  OT::SVG::accelerator_t svg;
+  svg.init (face);
+
+  for (unsigned int glyph_id = 0; glyph_id < glyph_count; glyph_id++)
+  {
+    hb_blob_t *blob = svg.reference_blob_for_glyph (glyph_id);
+
+    if (hb_blob_get_length (blob) == 0) continue;
+
+    unsigned int length;
+    const char *data = hb_blob_get_data (blob, &length);
+
+    char output_path[256];
+    sprintf (output_path, "out/svg-%d.svg%s",
+	     glyph_id,
+	     // append "z" if the content is gzipped, https://stackoverflow.com/a/6059405
+	     (length > 2 && (data[0] == '\x1F') && (data[1] == '\x8B')) ? "z" : "");
+
+    FILE *f = fopen (output_path, "wb");
+    fwrite (data, 1, length, f);
+    fclose (f);
+
+    hb_blob_destroy (blob);
+  }
+
+  svg.fini ();
+}
+
+static void
+colr_cpal_dump (hb_face_t *face, cairo_font_face_t *cairo_face)
+{
+  unsigned int upem = hb_face_get_upem (face);
+
+  unsigned glyph_count = hb_face_get_glyph_count (face);
+  for (hb_codepoint_t gid = 0; gid < glyph_count; ++gid)
+  {
+    unsigned int num_layers = hb_ot_color_glyph_get_layers (face, gid, 0, nullptr, nullptr);
+    if (!num_layers)
+      continue;
+
+    hb_ot_color_layer_t *layers = (hb_ot_color_layer_t*) malloc (num_layers * sizeof (hb_ot_color_layer_t));
+
+    hb_ot_color_glyph_get_layers (face, gid, 0, &num_layers, layers);
+    if (num_layers)
+    {
+      // Measure
+      cairo_text_extents_t extents;
+      {
+	cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
+	cairo_t *cr = cairo_create (surface);
+	cairo_set_font_face (cr, cairo_face);
+	cairo_set_font_size (cr, upem);
+
+	cairo_glyph_t *glyphs = (cairo_glyph_t *) calloc (num_layers, sizeof (cairo_glyph_t));
+	for (unsigned int j = 0; j < num_layers; ++j)
+	  glyphs[j].index = layers[j].glyph;
+	cairo_glyph_extents (cr, glyphs, num_layers, &extents);
+	free (glyphs);
+	cairo_surface_destroy (surface);
+	cairo_destroy (cr);
+      }
+
+      // Add a slight margin
+      extents.width += extents.width / 10;
+      extents.height += extents.height / 10;
+      extents.x_bearing -= extents.width / 20;
+      extents.y_bearing -= extents.height / 20;
+
+      // Render
+      unsigned int palette_count = hb_ot_color_palette_get_count (face);
+      for (unsigned int palette = 0; palette < palette_count; palette++) {
+	char output_path[255];
+
+	unsigned int num_colors = hb_ot_color_palette_get_colors (face, palette, 0, nullptr, nullptr);
+	if (!num_colors)
+	  continue;
+
+	hb_color_t *colors = (hb_color_t*) calloc (num_colors, sizeof (hb_color_t));
+	hb_ot_color_palette_get_colors (face, palette, 0, &num_colors, colors);
+	if (num_colors)
+	{
+	  // If we have more than one palette, use a simpler naming
+	  if (palette_count == 1)
+	    sprintf (output_path, "out/colr-%d.svg", gid);
+	  else
+	    sprintf (output_path, "out/colr-%d-%d.svg", gid, palette);
+
+	  cairo_surface_t *surface = cairo_svg_surface_create (output_path, extents.width, extents.height);
+	  cairo_t *cr = cairo_create (surface);
+	  cairo_set_font_face (cr, cairo_face);
+	  cairo_set_font_size (cr, upem);
+
+	  for (unsigned int layer = 0; layer < num_layers; ++layer)
+	  {
+	    hb_color_t color = 0x000000FF;
+	    if (layers[layer].color_index != 0xFFFF)
+	      color = colors[layers[layer].color_index];
+	    cairo_set_source_rgba (cr,
+				   hb_color_get_red (color) / 255.,
+				   hb_color_get_green (color) / 255.,
+				   hb_color_get_blue (color) / 255.,
+				   hb_color_get_alpha (color) / 255.);
+
+	    cairo_glyph_t glyph;
+	    glyph.index = layers[layer].glyph;
+	    glyph.x = -extents.x_bearing;
+	    glyph.y = -extents.y_bearing;
+	    cairo_show_glyphs (cr, &glyph, 1);
+	  }
+
+	  cairo_surface_destroy (surface);
+	  cairo_destroy (cr);
+	}
+	free (colors);
+      }
+    }
+
+    free (layers);
+  }
+}
+
+static void
+dump_glyphs (cairo_font_face_t *cairo_face, unsigned int upem,
+	     unsigned int num_glyphs)
+{
+  // Dump every glyph available on the font
+  return; // disabled for now
+  for (unsigned int i = 0; i < num_glyphs; ++i)
+  {
+    cairo_text_extents_t extents;
+    cairo_glyph_t glyph = {0};
+    glyph.index = i;
+
+    // Measure
+    {
+      cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
+      cairo_t *cr = cairo_create (surface);
+      cairo_set_font_face (cr, cairo_face);
+      cairo_set_font_size (cr, upem);
+
+      cairo_glyph_extents (cr, &glyph, 1, &extents);
+      cairo_surface_destroy (surface);
+      cairo_destroy (cr);
+    }
+
+    // Add a slight margin
+    extents.width += extents.width / 10;
+    extents.height += extents.height / 10;
+    extents.x_bearing -= extents.width / 20;
+    extents.y_bearing -= extents.height / 20;
+
+    // Render
+    {
+      char output_path[255];
+      sprintf (output_path, "out/%d.svg", i);
+      cairo_surface_t *surface = cairo_svg_surface_create (output_path, extents.width, extents.height);
+      cairo_t *cr = cairo_create (surface);
+      cairo_set_font_face (cr, cairo_face);
+      cairo_set_font_size (cr, upem);
+      glyph.x = -extents.x_bearing;
+      glyph.y = -extents.y_bearing;
+      cairo_show_glyphs (cr, &glyph, 1);
+      cairo_surface_destroy (surface);
+      cairo_destroy (cr);
+    }
+  }
+}
+
+int
+main (int argc, char **argv)
+{
+  if (argc != 2) {
+    fprintf (stderr, "usage: %s font-file.ttf\n"
+		     "run it like `rm -rf out && mkdir out && %s font-file.ttf`\n",
+		     argv[0], argv[0]);
+    exit (1);
+  }
+
+
+  FILE *font_name_file = fopen ("out/_font_name_file.txt", "r");
+  if (font_name_file != nullptr)
+  {
+    fprintf (stderr, "Purge or move ./out folder in order to run a new dump\n");
+    exit (1);
+  }
+
+  font_name_file = fopen ("out/_font_name_file.txt", "w");
+  if (font_name_file == nullptr)
+  {
+    fprintf (stderr, "./out is not accessible as a folder, create it please\n");
+    exit (1);
+  }
+  fwrite (argv[1], 1, strlen (argv[1]), font_name_file);
+  fclose (font_name_file);
+
+  hb_blob_t *blob = hb_blob_create_from_file (argv[1]);
+  hb_face_t *face = hb_face_create (blob, 0);
+  hb_font_t *font = hb_font_create (face);
+
+  OT::CBDT::accelerator_t cbdt;
+  cbdt.init (face);
+  cbdt.dump (cbdt_callback);
+  cbdt.fini ();
+
+  sbix_dump (face);
+
+  if (hb_ot_color_has_svg (face))
+    svg_dump (face);
+
+  cairo_font_face_t *cairo_face;
+  {
+    FT_Library library;
+    FT_Init_FreeType (&library);
+    FT_Face ftface;
+    FT_New_Face (library, argv[1], 0, &ftface);
+    cairo_face = cairo_ft_font_face_create_for_ft_face (ftface, 0);
+  }
+  if (hb_ot_color_has_layers (face) && hb_ot_color_has_palettes (face))
+    colr_cpal_dump (face, cairo_face);
+
+  unsigned int num_glyphs = hb_face_get_glyph_count (face);
+  unsigned int upem = hb_face_get_upem (face);
+  dump_glyphs (cairo_face, upem, num_glyphs);
+
+  hb_font_destroy (font);
+  hb_face_destroy (face);
+  hb_blob_destroy (blob);
+
+  return 0;
+}
commit f10252b4b637b4aa0b74bb75963ae1e1a41b5b9f
Author: Ebrahim Byagowi <ebrahim at gnu.org>
Date:   Mon Oct 29 10:29:58 2018 +0330

    [svg] Fix incorrect array referencing

diff --git a/src/hb-ot-color-svg-table.hh b/src/hb-ot-color-svg-table.hh
index 55629769..7c342d01 100644
--- a/src/hb-ot-color-svg-table.hh
+++ b/src/hb-ot-color-svg-table.hh
@@ -106,7 +106,7 @@ struct SVG
 
   inline const SVGDocumentIndexEntry &get_glyph_entry (hb_codepoint_t glyph_id) const
   {
-    const SortedArrayOf<SVGDocumentIndexEntry> docs = this+svgDocEntries;
+    const SortedArrayOf<SVGDocumentIndexEntry> &docs = this+svgDocEntries;
     return docs[docs.bsearch (glyph_id)];
   }
 


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