kc3-lang/freetype

diff --git a/ChangeLog b/ChangeLog
index e4f5148..108ea73 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,67 @@
+2013-05-23  Behdad Esfahbod  <behdad@google.com>
+
+	Add support for color embedded bitmaps (eg. color emoji).
+
+	A new load flag, FT_LOAD_COLOR, makes FreeType load color
+	embedded-bitmaps, following this draft specification
+
+	  https://color-emoji.googlecode.com/git/specification/v1.html
+
+	which defines two new SFNT tables, `CBDT' and `CBLC' (named and
+	modeled after `EBDT' and `EBLC', respectively).  The color bitmaps
+	are stored in the new FT_PIXEL_MODE_BGRA format to represent BGRA
+	pre-multiplied sRGB images.  If PNG support is available, PNG color
+	images as defined in the same proposed specification are supported
+	also.
+
+	Note that color bitmaps are converted to grayscale if client didn't
+	ask for color.
+
+	* builds/unix/configure.raw: Search for libpng.
+	Add `--without-png' option.
+
+	* devel/ftoption.h, include/freetype/config/ftoption.h
+	(FT_CONFIG_OPTION_USE_PNG): New macro.
+
+	* include/freetype/freetype.h (FT_LOAD_COLOR): New load flag.
+
+	* include/freetype/ftimage.h (FT_Pixel_Mode): Add
+	`FT_PIXEL_MODE_BGRA'.
+
+	* include/freetype/tttags.h (TTAG_CBDT, TTAG_CBLC): New tags.
+
+	* src/base/ftbitmap.c (FT_Bitmap_Embolden): Updated.
+	(ft_gray_for_premultiplied_srgb_bgra): New function.
+	(FT_Bitmap_Convert): Handle FT_PIXEL_MODE_BGRA.
+
+	* src/sfnt/pngshim.c, src/sfnt/pngshim.h: New files.
+
+	* src/sfnt/sfnt.c: Include `pngshim.c'.
+
+	* src/sfnt/ttsbit.c: Include FT_BITMAP_H and `pngshim.h'
+	(tt_face_load_eblc): Load `CBLC'.
+	(tt_sbit_decoder_init): Load `CBDT'.
+	(tt_sbit_decoder_alloc_bitmap): Pass load flags to select between
+	color and grayscale bitmaps.
+	Set `num_grays'.  This is used by `ftview' to choose the blending
+	algorithm.
+	(tt_sbit_decoder_load_byte_aligned,
+	tt_sbit_decoder_load_bit_aligned, tt_sbit_decoder_load_compound,
+	tt_sbit_decoder_load_image): Pass load flag.
+	s/write/pwrite/.
+	Don't call `tt_sbit_decoder_alloc_bitmap'.
+	Updated.
+	(tt_sbit_decoder_load_png) [FT_CONFIG_OPTION_USE_PNG]: New function.
+	(tt_sbit_decoder_load_bitmap): Pass load flag.
+	Handle new glyph formats 17, 18, and 19.
+	Call `tt_sbit_decoder_alloc_bitmap'.
+	Flatten color bitmaps if necessary.
+	(tt_face_load_sbit_image): Updated.
+
+	* src/sfnt/rules.mk (SFNT_DRV_SRC): Add `pngshim.c'.
+
+	* docs/CHANGES: Updated.
+
 2013-05-24  Guenter  <info@gknw.net>
 
 	Apply Savannah patch #8055.
diff --git a/builds/unix/configure.raw b/builds/unix/configure.raw
index b691ab3..3d6e901 100644
--- a/builds/unix/configure.raw
+++ b/builds/unix/configure.raw
@@ -254,12 +254,15 @@ AC_ARG_WITH([zlib],
   AS_HELP_STRING([--without-zlib],
                  [use internal zlib instead of system-wide]))
 if test x$with_zlib != xno && test -z "$LIBZ"; then
-  AC_CHECK_LIB([z], [gzsetparams], [AC_CHECK_HEADER([zlib.h], [LIBZ='-lz'])])
+  AC_CHECK_LIB([z],
+               [gzsetparams],
+               [AC_CHECK_HEADER([zlib.h], [LIBZ='-lz'])])
 fi
 if test x$with_zlib != xno && test -n "$LIBZ"; then
   SYSTEM_ZLIB=yes
 fi
 
+
 # check for system libbz2
 
 # don't quote AS_HELP_STRING!
@@ -267,12 +270,37 @@ AC_ARG_WITH([bzip2],
   AS_HELP_STRING([--without-bzip2],
                  [do not support bzip2 compressed fonts]))
 if test x$with_bzip2 != xno && test -z "$LIBBZ2"; then
-  AC_CHECK_LIB([bz2], [BZ2_bzDecompress], [AC_CHECK_HEADER([bzlib.h], [LIBBZ2='-lbz2'])])
+  AC_CHECK_LIB([bz2],
+               [BZ2_bzDecompress],
+               [AC_CHECK_HEADER([bzlib.h], [LIBBZ2='-lbz2'])])
 fi
 if test x$with_bzip2 != xno && test -n "$LIBBZ2"; then
   SYSTEM_LIBBZ2=yes
 fi
 
+
+# check for system libpng
+
+HAVE_LIBPNG=no
+AC_ARG_WITH([png],
+  AS_HELP_STRING([--without-png],
+                 [do not support png compressed OpenType embedded bitmaps]))
+if test x$with_png != xno; then
+  AC_MSG_CHECKING([for libpng])
+  if test -z "$LIBPNG_CFLAGS" -a -z "$LIBPNG_LIBS"; then
+    if ! which libpng-config >/dev/null; then
+      AC_MSG_ERROR([`libpng-config' not found;
+either set the LIBPNG_CFLAGS and LIBPNG_LIBS environment variables,
+or pass `--without-png' to the `configure' script.])
+    fi
+    LIBPNG_CFLAGS="`libpng-config --cflags`"
+    LIBPNG_LIBS="`libpng-config --libs`"
+  fi
+  HAVE_LIBPNG=yes
+  AC_MSG_RESULT([$LIBPNG_LIBS])
+fi
+
+
 # Some options handling SDKs/archs in CFLAGS should be copied
 # to LDFLAGS. Apple TechNote 2137 recommends to include these
 # options in CFLAGS but not in LDFLAGS.
@@ -709,6 +737,10 @@ if test x$SYSTEM_LIBBZ2 = xyes; then
   CFLAGS="$CFLAGS -DFT_CONFIG_OPTION_USE_BZIP2"
   LDFLAGS="$LDFLAGS $LIBBZ2"
 fi
+if test x$HAVE_LIBPNG = xyes; then
+  CFLAGS="$CFLAGS $LIBPNG_CFLAGS -DFT_CONFIG_OPTION_USE_PNG"
+  LDFLAGS="$LDFLAGS $LIBPNG_LIBS"
+fi
 
 AC_SUBST([CFLAGS])
 AC_SUBST([LDFLAGS])
diff --git a/devel/ftoption.h b/devel/ftoption.h
index 2b370e5..0696018 100644
--- a/devel/ftoption.h
+++ b/devel/ftoption.h
@@ -205,6 +205,20 @@ FT_BEGIN_HEADER
 
   /*************************************************************************/
   /*                                                                       */
+  /*  PNG bitmap support.                                                  */
+  /*                                                                       */
+  /*   FreeType now handles loading color bitmap glyphs in the PNG format. */
+  /*   This requires help from the external libpng library.  Uncompressed  */
+  /*   color bitmaps do not need any external libraries and will be        */
+  /*   supported regardless of this configuration.                         */
+  /*                                                                       */
+  /*   Define this macro if you want to enable this `feature'.             */
+  /*                                                                       */
+#define FT_CONFIG_OPTION_USE_PNG
+
+
+  /*************************************************************************/
+  /*                                                                       */
   /* Define to disable the use of file stream functions and types, FILE,   */
   /* fopen() etc.  Enables the use of smaller system libraries on embedded */
   /* systems that have multiple system libraries, some with or without     */
diff --git a/docs/CHANGES b/docs/CHANGES
index 2dff542..2636796 100644
--- a/docs/CHANGES
+++ b/docs/CHANGES
@@ -3,6 +3,24 @@ CHANGES BETWEEN 2.4.12 and 2.5
 
   I. IMPORTANT CHANGES
 
+    - Behdad Esfahbod  (on behalf  of Google) contributed  support for
+      color embedded bitmaps (eg. color emoji).
+
+      A  new  load  flag,  FT_LOAD_COLOR, makes  FreeType  load  color
+      embedded-bitmaps, following this draft specification
+
+        https://color-emoji.googlecode.com/git/specification/v1.html
+
+      which defines two new SFNT  tables, `CBDT' and `CBLC' (named and
+      modeled  after  `EBDT'  and `EBLC',  respectively).   The  color
+      bitmaps  are  stored in  the  new  FT_PIXEL_MODE_BGRA format  to
+      represent BGRA  pre-multiplied sRGB  images.  If PNG  support is
+      available,  PNG color  images as  defined in  the same  proposed
+      specification are supported also.
+
+      Note that  color bitmaps  are converted  to grayscale  if client
+      didn't ask for color.
+
     - As announced in the previous release,  all code related to macro
       FT_CONFIG_OPTION_OLD_INTERNALS  has been removed,  thus becoming
       obsolete.
diff --git a/include/freetype/config/ftoption.h b/include/freetype/config/ftoption.h
index 84f1695..d2254bb 100644
--- a/include/freetype/config/ftoption.h
+++ b/include/freetype/config/ftoption.h
@@ -216,6 +216,20 @@ FT_BEGIN_HEADER
 
   /*************************************************************************/
   /*                                                                       */
+  /*  PNG bitmap support.                                                  */
+  /*                                                                       */
+  /*   FreeType now handles loading color bitmap glyphs in the PNG format. */
+  /*   This requires help from the external libpng library.  Uncompressed  */
+  /*   color bitmaps do not need any external libraries and will be        */
+  /*   supported regardless of this configuration.                         */
+  /*                                                                       */
+  /*   Define this macro if you want to enable this `feature'.             */
+  /*                                                                       */
+/* #define FT_CONFIG_OPTION_USE_PNG */
+
+
+  /*************************************************************************/
+  /*                                                                       */
   /* DLL export compilation                                                */
   /*                                                                       */
   /*   When compiling FreeType as a DLL, some systems/compilers need a     */
diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index 57a03a7..0d5680b 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -2523,6 +2523,14 @@ FT_BEGIN_HEADER
    *   FT_LOAD_NO_AUTOHINT ::
    *     Disable auto-hinter.  See also the note below.
    *
+   *   FT_LOAD_COLOR ::
+   *     This flag is used to request loading of color embedded-bitmap
+   *     images.  The resulting color bitmaps, if available, will have the
+   *     @FT_PIXEL_MODE_BGRA format.  When the flag is not used and color
+   *     bitmaps are found, they will be converted to 256-level gray
+   *     bitmaps transparently.  Those bitmaps will be in the
+   *     @FT_PIXEL_MODE_GRAY format.
+   *
    * @note:
    *   By default, hinting is enabled and the font's native hinter (see
    *   @FT_FACE_FLAG_HINTER) is preferred over the auto-hinter.  You can
@@ -2560,6 +2568,8 @@ FT_BEGIN_HEADER
 #define FT_LOAD_MONOCHROME                   ( 1L << 12 )
 #define FT_LOAD_LINEAR_DESIGN                ( 1L << 13 )
 #define FT_LOAD_NO_AUTOHINT                  ( 1L << 15 )
+  /* Bits 16..19 are used by `FT_LOAD_TARGET_' */
+#define FT_LOAD_COLOR                        ( 1L << 20 )
 
   /* */
 
diff --git a/include/freetype/ftbitmap.h b/include/freetype/ftbitmap.h
index 9274236..7dbf5ba 100644
--- a/include/freetype/ftbitmap.h
+++ b/include/freetype/ftbitmap.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType utility functions for bitmaps (specification).              */
 /*                                                                         */
-/*  Copyright 2004, 2005, 2006, 2008 by                                    */
+/*  Copyright 2004-2006, 2008, 2013 by                                     */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -135,9 +135,9 @@ FT_BEGIN_HEADER
   /*    FT_Bitmap_Convert                                                  */
   /*                                                                       */
   /* <Description>                                                         */
-  /*    Convert a bitmap object with depth 1bpp, 2bpp, 4bpp, or 8bpp to a  */
-  /*    bitmap object with depth 8bpp, making the number of used bytes per */
-  /*    line (a.k.a. the `pitch') a multiple of `alignment'.               */
+  /*    Convert a bitmap object with depth 1bpp, 2bpp, 4bpp, 8bpp or 32bpp */
+  /*    to a bitmap object with depth 8bpp, making the number of used      */
+  /*    bytes line (a.k.a. the `pitch') a multiple of `alignment'.         */
   /*                                                                       */
   /* <Input>                                                               */
   /*    library   :: A handle to a library object.                         */
diff --git a/include/freetype/ftimage.h b/include/freetype/ftimage.h
index 7834303..3b826b1 100644
--- a/include/freetype/ftimage.h
+++ b/include/freetype/ftimage.h
@@ -5,8 +5,7 @@
 /*    FreeType glyph image formats and default raster interface            */
 /*    (specification).                                                     */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,   */
-/*            2010 by                                                      */
+/*  Copyright 1996-2010, 2013 by                                           */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -169,6 +168,15 @@ FT_BEGIN_HEADER
   /*      times taller than the original glyph image.  See also            */
   /*      @FT_RENDER_MODE_LCD_V.                                           */
   /*                                                                       */
+  /*    FT_PIXEL_MODE_BGRA ::                                              */
+  /*      An image with four 8-bit channels per pixel, representing a      */
+  /*      color image (such as emoticons) with alpha channel.  For each    */
+  /*      pixel, the format is BGRA, which means, the blue channel comes   */
+  /*      first in memory.  The color channels are pre-multiplied and in   */
+  /*      the sRGB colorspace.  For example, full red at half-translucent  */
+  /*      opacity will be represented as `00,00,80,80', not `00,00,FF,80'. */
+  /*      See also @FT_LOAD_COLOR.                                         */
+  /*                                                                       */
   typedef enum  FT_Pixel_Mode_
   {
     FT_PIXEL_MODE_NONE = 0,
@@ -178,6 +186,7 @@ FT_BEGIN_HEADER
     FT_PIXEL_MODE_GRAY4,
     FT_PIXEL_MODE_LCD,
     FT_PIXEL_MODE_LCD_V,
+    FT_PIXEL_MODE_BGRA,
 
     FT_PIXEL_MODE_MAX      /* do not remove */
 
diff --git a/include/freetype/tttags.h b/include/freetype/tttags.h
index 307ce4b..be8c524 100644
--- a/include/freetype/tttags.h
+++ b/include/freetype/tttags.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Tags for TrueType and OpenType tables (specification only).          */
 /*                                                                         */
-/*  Copyright 1996-2001, 2004, 2005, 2007, 2008 by                         */
+/*  Copyright 1996-2001, 2004, 2005, 2007, 2008, 2013 by                   */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -40,6 +40,8 @@ FT_BEGIN_HEADER
 #define TTAG_bhed  FT_MAKE_TAG( 'b', 'h', 'e', 'd' )
 #define TTAG_bloc  FT_MAKE_TAG( 'b', 'l', 'o', 'c' )
 #define TTAG_bsln  FT_MAKE_TAG( 'b', 's', 'l', 'n' )
+#define TTAG_CBDT  FT_MAKE_TAG( 'C', 'B', 'D', 'T' )
+#define TTAG_CBLC  FT_MAKE_TAG( 'C', 'B', 'L', 'C' )
 #define TTAG_CFF   FT_MAKE_TAG( 'C', 'F', 'F', ' ' )
 #define TTAG_CID   FT_MAKE_TAG( 'C', 'I', 'D', ' ' )
 #define TTAG_cmap  FT_MAKE_TAG( 'c', 'm', 'a', 'p' )
diff --git a/src/base/ftbitmap.c b/src/base/ftbitmap.c
index bd25cbe..a8602bd 100644
--- a/src/base/ftbitmap.c
+++ b/src/base/ftbitmap.c
@@ -279,6 +279,10 @@
     case FT_PIXEL_MODE_LCD_V:
       ystr *= 3;
       break;
+
+    case FT_PIXEL_MODE_BGRA:
+      /* We don't embolden color glyphs. */
+      return FT_Err_Ok;
     }
 
     error = ft_bitmap_assure_buffer( library->memory, bitmap, xstr, ystr );
@@ -371,6 +375,59 @@
   }
 
 
+  FT_Byte
+  ft_gray_for_premultiplied_srgb_bgra( const FT_Byte*  bgra )
+  {
+    FT_Long  a = bgra[3];
+    FT_Long  b = bgra[0];
+    FT_Long  g = bgra[1];
+    FT_Long  r = bgra[2];
+    FT_Long  l;
+
+
+    /*
+     * Luminosity for sRGB is defined using ~0.2126,0.7152,0.0722
+     * coefficients for RGB channels *on the linear colors*.
+     * A gamma of 2.2 is fair to assume.  And then, we need to
+     * undo the premultiplication too.
+     *
+     * http://accessibility.kde.org/hsl-adjusted.php
+     *
+     * We do the computation with integers only.
+     */
+
+    /* Undo premultification, get the number in a 16.16 form. */
+    b = FT_MulDiv( b, 65536, a );
+    g = FT_MulDiv( g, 65536, a );
+    r = FT_MulDiv( r, 65536, a );
+    a = a * 256;
+
+    /* Apply gamma of 2.0 instead of 2.2. */
+    b = FT_MulFix( b, b );
+    g = FT_MulFix( g, g );
+    r = FT_MulFix( r, r );
+
+    /* Apply coefficients. */
+    b = FT_MulFix( b,  4731 /* 0.0722 * 65536 */ );
+    g = FT_MulFix( g, 46871 /* 0.7152 * 65536 */ );
+    r = FT_MulFix( r, 13933 /* 0.2126 * 65536 */ );
+
+    l = r + g + b;
+
+    /*
+     * Final transparency can be determined this way:
+     *
+     * - If alpha is zero, we want 0.
+     * - If alpha is zero and luminosity is zero, we want 255.
+     * - If alpha is zero and luminosity is one, we want 0.
+     *
+     * So the formula is a * (1 - l).
+     */
+
+    return FT_MulFix( 65535 - l, a ) >> 8;
+  }
+
+
   /* documentation is in ftbitmap.h */
 
   FT_EXPORT_DEF( FT_Error )
@@ -396,6 +453,7 @@
     case FT_PIXEL_MODE_GRAY4:
     case FT_PIXEL_MODE_LCD:
     case FT_PIXEL_MODE_LCD_V:
+    case FT_PIXEL_MODE_BGRA:
       {
         FT_Int   pad;
         FT_Long  old_size;
@@ -608,6 +666,37 @@
       }
       break;
 
+    case FT_PIXEL_MODE_BGRA:
+      {
+        FT_Byte*  s       = source->buffer;
+        FT_Byte*  t       = target->buffer;
+        FT_Int    s_pitch = source->pitch;
+        FT_Int    t_pitch = target->pitch;
+        FT_Int    i;
+
+
+        target->num_grays = 256;
+
+        for ( i = source->rows; i > 0; i-- )
+        {
+          FT_Byte*  ss = s;
+          FT_Byte*  tt = t;
+          FT_Int    j;
+
+
+          for ( j = source->width; j > 0; j-- )
+          {
+            tt[0] = ft_gray_for_premultiplied_srgb_bgra( ss );
+
+            ss += 4;
+            tt += 1;
+          }
+
+          s += s_pitch;
+          t += t_pitch;
+        }
+      }
+      break;
 
     default:
       ;
diff --git a/src/sfnt/pngshim.c b/src/sfnt/pngshim.c
new file mode 100644
index 0000000..408f879
--- /dev/null
+++ b/src/sfnt/pngshim.c
@@ -0,0 +1,336 @@
+/***************************************************************************/
+/*                                                                         */
+/*  pngshim.c                                                              */
+/*                                                                         */
+/*    PNG Bitmap glyph support.                                            */
+/*                                                                         */
+/*  Copyright 2013 by Google, Inc.                                         */
+/*  Written by Stuart Gill and Behdad Esfahbod.                            */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_TRUETYPE_TAGS_H
+#include FT_CONFIG_STANDARD_LIBRARY_H
+
+
+#ifdef FT_CONFIG_OPTION_USE_PNG
+
+  /* We always include <stjmp.h>, so make libpng shut up! */
+#define PNG_SKIP_SETJMP_CHECK 1
+#include <png.h>
+#include "pngshim.h"
+
+#include "sferrors.h"
+
+
+  /* This code is freely based on cairo-png.c.  There's so many ways */
+  /* to call libpng, and the way cairo does it is defacto standard.  */
+
+  static int
+  multiply_alpha( int  alpha,
+                  int  color )
+  {
+    int  temp = ( alpha * color ) + 0x80;
+
+
+    return ( temp + ( temp >> 8 ) ) >> 8;
+  }
+
+
+  /* Premultiplies data and converts RGBA bytes => native endian. */
+  static void
+  premultiply_data( png_structp    png,
+                    png_row_infop  row_info,
+                    png_bytep      data )
+  {
+    unsigned int  i;
+
+    FT_UNUSED( png );
+
+
+    for ( i = 0; i < row_info->rowbytes; i += 4 )
+    {
+      unsigned char*  base  = &data[i];
+      unsigned int    alpha = base[3];
+
+
+      if ( alpha == 0 )
+        base[0] = base[1] = base[2] = base[3] = 0;
+
+      else
+      {
+        unsigned int  red   = base[0];
+        unsigned int  green = base[1];
+        unsigned int  blue  = base[2];
+
+
+        if ( alpha != 0xFF )
+        {
+          red   = multiply_alpha( alpha, red   );
+          green = multiply_alpha( alpha, green );
+          blue  = multiply_alpha( alpha, blue  );
+        }
+
+        base[0] = blue;
+        base[1] = green;
+        base[2] = red;
+        base[3] = alpha;
+      }
+    }
+  }
+
+
+  /* Converts RGBx bytes to BGRA. */
+  static void
+  convert_bytes_to_data( png_structp    png,
+                         png_row_infop  row_info,
+                         png_bytep      data )
+  {
+    unsigned int  i;
+
+    FT_UNUSED( png );
+
+
+    for ( i = 0; i < row_info->rowbytes; i += 4 )
+    {
+      unsigned char*  base  = &data[i];
+      unsigned int    red   = base[0];
+      unsigned int    green = base[1];
+      unsigned int    blue  = base[2];
+
+
+      base[0] = blue;
+      base[1] = green;
+      base[2] = red;
+      base[3] = 0xFF;
+    }
+  }
+
+
+  /* Use error callback to avoid png writing to stderr. */
+  static void
+  error_callback( png_structp      png,
+                  png_const_charp  error_msg )
+  {
+    FT_Error*  error = png_get_error_ptr( png );
+
+    FT_UNUSED( error_msg );
+
+
+    *error = FT_THROW( Out_Of_Memory );
+#ifdef PNG_SETJMP_SUPPORTED
+    longjmp( png_jmpbuf( png ), 1 );
+#endif
+    /* if we get here, then we have no choice but to abort ... */
+  }
+
+
+  /* Use warning callback to avoid png writing to stderr. */
+  static void
+  warning_callback( png_structp      png,
+                    png_const_charp  error_msg )
+  {
+    FT_UNUSED( png );
+    FT_UNUSED( error_msg );
+
+    /* Just ignore warnings. */
+  }
+
+
+  static void
+  read_data_from_FT_Stream( png_structp  png,
+                            png_bytep    data,
+                            png_size_t   length )
+  {
+    FT_Error   error;
+    png_voidp  p      = png_get_io_ptr( png );
+    FT_Stream  stream = (FT_Stream)p;
+
+
+    if ( FT_FRAME_ENTER( length ) )
+    {
+      FT_Error*  e = png_get_error_ptr( png );
+
+
+      *e = FT_THROW( Invalid_Stream_Read );
+      png_error( png, NULL );
+
+      return;
+    }
+
+    memcpy( data, stream->cursor, length );
+
+    FT_FRAME_EXIT();
+  }
+
+
+  static FT_Error
+  Load_SBit_Png( FT_Bitmap*       map,
+                 FT_Int           x_offset,
+                 FT_Int           y_offset,
+                 FT_Int           pix_bits,
+                 TT_SBit_Metrics  metrics,
+                 FT_Memory        memory,
+                 FT_Byte*         data,
+                 FT_UInt          png_len )
+  {
+    FT_Error      error = FT_Err_Ok;
+    FT_StreamRec  stream;
+
+    png_structp  png;
+    png_infop    info;
+    png_uint_32  imgWidth, imgHeight;
+
+    int         bitdepth, color_type, interlace;
+    FT_Int      i;
+    png_byte*  *rows;
+
+
+    if ( x_offset < 0 || x_offset + metrics->width  > map->width ||
+         y_offset < 0 || y_offset + metrics->height > map->rows  ||
+         pix_bits != 32 || map->pixel_mode != FT_PIXEL_MODE_BGRA )
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    FT_Stream_OpenMemory( &stream, data, png_len );
+
+    png = png_create_read_struct( PNG_LIBPNG_VER_STRING,
+                                  &error,
+                                  error_callback,
+                                  warning_callback );
+    if ( !png )
+    {
+      error = FT_THROW( Out_Of_Memory );
+      goto Exit;
+    }
+
+    info = png_create_info_struct( png );
+    if ( !info )
+    {
+      error = FT_THROW( Out_Of_Memory );
+      png_destroy_read_struct( &png, NULL, NULL );
+      goto Exit;
+    }
+
+    if ( ft_setjmp( png_jmpbuf( png ) ) )
+    {
+      error = FT_THROW( Invalid_File_Format );
+      goto DestroyExit;
+    }
+
+    png_set_read_fn( png, &stream, read_data_from_FT_Stream );
+
+    png_read_info( png, info );
+    png_get_IHDR( png, info,
+                  &imgWidth, &imgHeight,
+                  &bitdepth, &color_type, &interlace,
+                  NULL, NULL );
+
+    if ( error != FT_Err_Ok                   ||
+         (FT_Int)imgWidth  != metrics->width  ||
+         (FT_Int)imgHeight != metrics->height )
+      goto DestroyExit;
+
+    /* convert palette/gray image to rgb */
+    if ( color_type == PNG_COLOR_TYPE_PALETTE )
+      png_set_palette_to_rgb( png );
+
+    /* expand gray bit depth if needed */
+    if ( color_type == PNG_COLOR_TYPE_GRAY )
+    {
+#if PNG_LIBPNG_VER >= 10209
+      png_set_expand_gray_1_2_4_to_8( png );
+#else
+      png_set_gray_1_2_4_to_8( png );
+#endif
+    }
+
+    /* transform transparency to alpha */
+    if ( png_get_valid(png, info, PNG_INFO_tRNS ) )
+      png_set_tRNS_to_alpha( png );
+
+    if ( bitdepth == 16 )
+      png_set_strip_16( png );
+
+    if ( bitdepth < 8 )
+      png_set_packing( png );
+
+    /* convert grayscale to RGB */
+    if ( color_type == PNG_COLOR_TYPE_GRAY       ||
+         color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
+      png_set_gray_to_rgb( png );
+
+    if ( interlace != PNG_INTERLACE_NONE )
+      png_set_interlace_handling( png );
+
+    png_set_filler( png, 0xFF, PNG_FILLER_AFTER );
+
+    /* recheck header after setting EXPAND options */
+    png_read_update_info(png, info );
+    png_get_IHDR( png, info,
+                  &imgWidth, &imgHeight,
+                  &bitdepth, &color_type, &interlace,
+                  NULL, NULL );
+
+    if ( bitdepth != 8                              ||
+        !( color_type == PNG_COLOR_TYPE_RGB       ||
+           color_type == PNG_COLOR_TYPE_RGB_ALPHA ) )
+    {
+      error = FT_THROW( Invalid_File_Format );
+      goto DestroyExit;
+    }
+
+    switch ( color_type )
+    {
+    default:
+      /* Shouldn't happen, but fall through. */
+
+    case PNG_COLOR_TYPE_RGB_ALPHA:
+      png_set_read_user_transform_fn( png, premultiply_data );
+      break;
+
+    case PNG_COLOR_TYPE_RGB:
+      /* Humm, this smells.  Carry on though. */
+      png_set_read_user_transform_fn( png, convert_bytes_to_data );
+      break;
+    }
+
+    if ( FT_NEW_ARRAY( rows, imgHeight ) )
+    {
+      error = FT_THROW( Out_Of_Memory );
+      goto DestroyExit;
+    }
+
+    for ( i = 0; i < (FT_Int)imgHeight; i++ )
+      rows[i] = map->buffer + ( y_offset + i ) * map->pitch + x_offset * 4;
+
+    png_read_image( png, rows );
+
+    FT_FREE( rows );
+
+    png_read_end( png, info );
+
+  DestroyExit:
+    png_destroy_read_struct( &png, &info, NULL );
+    FT_Stream_Close( &stream );
+
+  Exit:
+    return error;
+  }
+
+#endif /* FT_CONFIG_OPTION_USE_PNG */
+
+
+/* END */
diff --git a/src/sfnt/pngshim.h b/src/sfnt/pngshim.h
new file mode 100644
index 0000000..8a2e69c
--- /dev/null
+++ b/src/sfnt/pngshim.h
@@ -0,0 +1,48 @@
+/***************************************************************************/
+/*                                                                         */
+/*  pngshim.h                                                              */
+/*                                                                         */
+/*    PNG Bitmap glyph support.                                            */
+/*                                                                         */
+/*  Copyright 2013 by Google, Inc.                                         */
+/*  Written by Stuart Gill and Behdad Esfahbod.                            */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __PNGSHIM_H__
+#define __PNGSHIM_H__
+
+
+#include <ft2build.h>
+#include "ttload.h"
+
+
+FT_BEGIN_HEADER
+
+#ifdef FT_CONFIG_OPTION_USE_PNG
+
+  FT_LOCAL( FT_Error )
+  Load_SBit_Png( FT_Bitmap*       map,
+                 FT_Int           x_offset,
+                 FT_Int           y_offset,
+                 FT_Int           pix_bits,
+                 TT_SBit_Metrics  metrics,
+                 FT_Memory        memory,
+                 FT_Byte*         data,
+                 FT_UInt          png_len );
+
+#endif
+
+FT_END_HEADER
+
+#endif /* __PNGSHIM_H__ */
+
+
+/* END */
diff --git a/src/sfnt/rules.mk b/src/sfnt/rules.mk
index 65dd147..a6c956a 100644
--- a/src/sfnt/rules.mk
+++ b/src/sfnt/rules.mk
@@ -34,7 +34,8 @@ SFNT_DRV_SRC := $(SFNT_DIR)/ttload.c   \
                 $(SFNT_DIR)/ttbdf.c    \
                 $(SFNT_DIR)/sfobjs.c   \
                 $(SFNT_DIR)/sfdriver.c \
-                $(SFNT_DIR)/sfntpic.c
+                $(SFNT_DIR)/sfntpic.c  \
+                $(SFNT_DIR)/pngshim.c
 
 # SFNT driver headers
 #
diff --git a/src/sfnt/sfnt.c b/src/sfnt/sfnt.c
index fc507b4..d62ed4e 100644
--- a/src/sfnt/sfnt.c
+++ b/src/sfnt/sfnt.c
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Single object library component.                                     */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006 by                   */
+/*  Copyright 1996-2006, 2013 by                                           */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -28,6 +28,7 @@
 #include "sfdriver.c"
 
 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
+#include "pngshim.c"
 #include "ttsbit.c"
 #endif
 
diff --git a/src/sfnt/ttsbit.c b/src/sfnt/ttsbit.c
index 05d7be9..7c21c2e 100644
--- a/src/sfnt/ttsbit.c
+++ b/src/sfnt/ttsbit.c
@@ -7,6 +7,9 @@
 /*  Copyright 2005-2009, 2013 by                                           */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
+/*  Copyright 2013 by Google, Inc.                                         */
+/*  Google Author(s): Behdad Esfahbod.                                     */
+/*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
 /*  modified, and distributed under the terms of the FreeType project      */
 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
@@ -20,10 +23,13 @@
 #include FT_INTERNAL_DEBUG_H
 #include FT_INTERNAL_STREAM_H
 #include FT_TRUETYPE_TAGS_H
+#include FT_BITMAP_H
 #include "ttsbit.h"
 
 #include "sferrors.h"
 
+#include "pngshim.h"
+
 
   /*************************************************************************/
   /*                                                                       */
@@ -50,7 +56,9 @@
     face->sbit_num_strikes = 0;
 
     /* this table is optional */
-    error = face->goto_table( face, TTAG_EBLC, stream, &table_size );
+    error = face->goto_table( face, TTAG_CBLC, stream, &table_size );
+    if ( error )
+      error = face->goto_table( face, TTAG_EBLC, stream, &table_size );
     if ( error )
       error = face->goto_table( face, TTAG_bloc, stream, &table_size );
     if ( error )
@@ -185,7 +193,9 @@
     FT_ULong   ebdt_size;
 
 
-    error = face->goto_table( face, TTAG_EBDT, stream, &ebdt_size );
+    error = face->goto_table( face, TTAG_CBDT, stream, &ebdt_size );
+    if ( error )
+      error = face->goto_table( face, TTAG_EBDT, stream, &ebdt_size );
     if ( error )
       error = face->goto_table( face, TTAG_bdat, stream, &ebdt_size );
     if ( error )
@@ -243,7 +253,8 @@
 
 
   static FT_Error
-  tt_sbit_decoder_alloc_bitmap( TT_SBitDecoder  decoder )
+  tt_sbit_decoder_alloc_bitmap( TT_SBitDecoder  decoder,
+                                FT_UInt         load_flags )
   {
     FT_Error    error = FT_Err_Ok;
     FT_UInt     width, height;
@@ -268,21 +279,40 @@
     case 1:
       map->pixel_mode = FT_PIXEL_MODE_MONO;
       map->pitch      = ( map->width + 7 ) >> 3;
+      map->num_grays  = 2;
       break;
 
     case 2:
       map->pixel_mode = FT_PIXEL_MODE_GRAY2;
       map->pitch      = ( map->width + 3 ) >> 2;
+      map->num_grays  = 4;
       break;
 
     case 4:
       map->pixel_mode = FT_PIXEL_MODE_GRAY4;
       map->pitch      = ( map->width + 1 ) >> 1;
+      map->num_grays  = 16;
       break;
 
     case 8:
       map->pixel_mode = FT_PIXEL_MODE_GRAY;
       map->pitch      = map->width;
+      map->num_grays  = 256;
+      break;
+
+    case 32:
+      if ( load_flags & FT_LOAD_COLOR )
+      {
+        map->pixel_mode = FT_PIXEL_MODE_BGRA;
+        map->pitch      = map->width * 4;
+        map->num_grays  = 256;
+      }
+      else
+      {
+        map->pixel_mode = FT_PIXEL_MODE_GRAY;
+        map->pitch      = map->width;
+        map->num_grays  = 256;
+      }
       break;
 
     default:
@@ -351,11 +381,13 @@
   /* forward declaration */
   static FT_Error
   tt_sbit_decoder_load_image( TT_SBitDecoder  decoder,
+                              FT_UInt         load_flags,
                               FT_UInt         glyph_index,
                               FT_Int          x_pos,
                               FT_Int          y_pos );
 
   typedef FT_Error  (*TT_SBitDecoder_LoadFunc)( TT_SBitDecoder  decoder,
+                                                FT_UInt         load_flags,
                                                 FT_Byte*        p,
                                                 FT_Byte*        plimit,
                                                 FT_Int          x_pos,
@@ -364,6 +396,7 @@
 
   static FT_Error
   tt_sbit_decoder_load_byte_aligned( TT_SBitDecoder  decoder,
+                                     FT_UInt         load_flags,
                                      FT_Byte*        p,
                                      FT_Byte*        limit,
                                      FT_Int          x_pos,
@@ -374,13 +407,8 @@
     FT_Int      bit_height, bit_width, pitch, width, height, line_bits, h;
     FT_Bitmap*  bitmap;
 
+    FT_UNUSED( load_flags );
 
-    if ( !decoder->bitmap_allocated )
-    {
-      error = tt_sbit_decoder_alloc_bitmap( decoder );
-      if ( error )
-        goto Exit;
-    }
 
     /* check that we can write the glyph into the bitmap */
     bitmap     = decoder->bitmap;
@@ -415,35 +443,35 @@
     {
       for ( h = height; h > 0; h--, line += pitch )
       {
-        FT_Byte*  write = line;
+        FT_Byte*  pwrite = line;
         FT_Int    w;
 
 
         for ( w = line_bits; w >= 8; w -= 8 )
         {
-          write[0] = (FT_Byte)( write[0] | *p++ );
-          write   += 1;
+          pwrite[0] = (FT_Byte)( pwrite[0] | *p++ );
+          pwrite   += 1;
         }
 
         if ( w > 0 )
-          write[0] = (FT_Byte)( write[0] | ( *p++ & ( 0xFF00U >> w ) ) );
+          pwrite[0] = (FT_Byte)( pwrite[0] | ( *p++ & ( 0xFF00U >> w ) ) );
       }
     }
     else  /* x_pos > 0 */
     {
       for ( h = height; h > 0; h--, line += pitch )
       {
-        FT_Byte*  write = line;
+        FT_Byte*  pwrite = line;
         FT_Int    w;
         FT_UInt   wval = 0;
 
 
         for ( w = line_bits; w >= 8; w -= 8 )
         {
-          wval      = (FT_UInt)( wval | *p++ );
-          write[0]  = (FT_Byte)( write[0] | ( wval >> x_pos ) );
-          write    += 1;
-          wval    <<= 8;
+          wval       = (FT_UInt)( wval | *p++ );
+          pwrite[0]  = (FT_Byte)( pwrite[0] | ( wval >> x_pos ) );
+          pwrite    += 1;
+          wval     <<= 8;
         }
 
         if ( w > 0 )
@@ -451,13 +479,13 @@
 
         /* all bits read and there are `x_pos + w' bits to be written */
 
-        write[0] = (FT_Byte)( write[0] | ( wval >> x_pos ) );
+        pwrite[0] = (FT_Byte)( pwrite[0] | ( wval >> x_pos ) );
 
         if ( x_pos + w > 8 )
         {
-          write++;
-          wval   <<= 8;
-          write[0] = (FT_Byte)( write[0] | ( wval >> x_pos ) );
+          pwrite++;
+          wval     <<= 8;
+          pwrite[0]  = (FT_Byte)( pwrite[0] | ( wval >> x_pos ) );
         }
       }
     }
@@ -469,7 +497,7 @@
 
   /*
    * Load a bit-aligned bitmap (with pointer `p') into a line-aligned bitmap
-   * (with pointer `write').  In the example below, the width is 3 pixel,
+   * (with pointer `pwrite').  In the example below, the width is 3 pixel,
    * and `x_pos' is 1 pixel.
    *
    *       p                               p+1
@@ -484,26 +512,27 @@
    * |                               | .
    * | 7   6   5   4   3   2   1   0 | .
    * |                               | .
-   *   write               .           .
+   *   pwrite              .           .
    *                       .           .
    *                       v           .
    *                   +-------+       .
    *             |                               |
    *             | 7   6   5   4   3   2   1   0 |
    *             |                               |
-   *               write+1             .
+   *               pwrite+1            .
    *                                   .
    *                                   v
    *                               +-------+
    *                         |                               |
    *                         | 7   6   5   4   3   2   1   0 |
    *                         |                               |
-   *                           write+2
+   *                           pwrite+2
    *
    */
 
   static FT_Error
   tt_sbit_decoder_load_bit_aligned( TT_SBitDecoder  decoder,
+                                    FT_UInt         load_flags,
                                     FT_Byte*        p,
                                     FT_Byte*        limit,
                                     FT_Int          x_pos,
@@ -515,13 +544,8 @@
     FT_Bitmap*  bitmap;
     FT_UShort   rval;
 
+    FT_UNUSED( load_flags );
 
-    if ( !decoder->bitmap_allocated )
-    {
-      error = tt_sbit_decoder_alloc_bitmap( decoder );
-      if ( error )
-        goto Exit;
-    }
 
     /* check that we can write the glyph into the bitmap */
     bitmap     = decoder->bitmap;
@@ -560,8 +584,8 @@
 
     for ( h = height; h > 0; h--, line += pitch )
     {
-      FT_Byte*  write = line;
-      FT_Int    w     = line_bits;
+      FT_Byte*  pwrite = line;
+      FT_Int    w      = line_bits;
 
 
       /* handle initial byte (in target bitmap) specially if necessary */
@@ -586,9 +610,9 @@
           nbits  -= w;
         }
 
-        *write++ |= ( ( rval >> nbits ) & 0xFF ) &
-                    ( ~( 0xFF << w ) << ( 8 - w - x_pos ) );
-        rval    <<= 8;
+        *pwrite++ |= ( ( rval >> nbits ) & 0xFF ) &
+                     ( ~( 0xFF << w ) << ( 8 - w - x_pos ) );
+        rval     <<= 8;
 
         w = line_bits - w;
       }
@@ -596,8 +620,8 @@
       /* handle medial bytes */
       for ( ; w >= 8; w -= 8 )
       {
-        rval     |= *p++;
-        *write++ |= ( rval >> nbits ) & 0xFF;
+        rval      |= *p++;
+        *pwrite++ |= ( rval >> nbits ) & 0xFF;
 
         rval <<= 8;
       }
@@ -609,15 +633,15 @@
         {
           if ( p < limit )
             rval |= *p++;
-          *write |= ( ( rval >> nbits ) & 0xFF ) & ( 0xFF00U >> w );
-          nbits  += 8 - w;
+          *pwrite |= ( ( rval >> nbits ) & 0xFF ) & ( 0xFF00U >> w );
+          nbits   += 8 - w;
 
           rval <<= 8;
         }
         else
         {
-          *write |= ( ( rval >> nbits ) & 0xFF ) & ( 0xFF00U >> w );
-          nbits  -= w;
+          *pwrite |= ( ( rval >> nbits ) & 0xFF ) & ( 0xFF00U >> w );
+          nbits   -= w;
         }
       }
     }
@@ -629,6 +653,7 @@
 
   static FT_Error
   tt_sbit_decoder_load_compound( TT_SBitDecoder  decoder,
+                                 FT_UInt         load_flags,
                                  FT_Byte*        p,
                                  FT_Byte*        limit,
                                  FT_Int          x_pos,
@@ -652,13 +677,6 @@
     if ( p + 4 * num_components > limit )
       goto Fail;
 
-    if ( !decoder->bitmap_allocated )
-    {
-      error = tt_sbit_decoder_alloc_bitmap( decoder );
-      if ( error )
-        goto Exit;
-    }
-
     for ( nn = 0; nn < num_components; nn++ )
     {
       FT_UInt  gindex = FT_NEXT_USHORT( p );
@@ -667,7 +685,7 @@
 
 
       /* NB: a recursive call */
-      error = tt_sbit_decoder_load_image( decoder, gindex,
+      error = tt_sbit_decoder_load_image( decoder, load_flags, gindex,
                                           x_pos + dx, y_pos + dy );
       if ( error )
         break;
@@ -691,8 +709,54 @@
   }
 
 
+#ifdef FT_CONFIG_OPTION_USE_PNG
+
+  static FT_Error
+  tt_sbit_decoder_load_png( TT_SBitDecoder  decoder,
+                            FT_UInt         load_flags,
+                            FT_Byte*        p,
+                            FT_Byte*        limit,
+                            FT_Int          x_pos,
+                            FT_Int          y_pos )
+  {
+    FT_Error  error = FT_Err_Ok;
+    FT_ULong  png_len;
+
+    FT_UNUSED( load_flags );
+
+
+    if ( limit - p < 4 )
+    {
+      error = FT_THROW( Invalid_File_Format );
+      goto Exit;
+    }
+
+    png_len = FT_NEXT_ULONG( p );
+    if ( (FT_ULong)( limit - p ) < png_len )
+    {
+      error = FT_THROW( Invalid_File_Format );
+      goto Exit;
+    }
+
+    error = Load_SBit_Png( decoder->bitmap,
+                           x_pos,
+                           y_pos,
+                           decoder->bit_depth,
+                           decoder->metrics,
+                           decoder->stream->memory,
+                           p,
+                           png_len );
+
+  Exit:
+    return error;
+  }
+
+#endif /* FT_CONFIG_OPTION_USE_PNG */
+
+
   static FT_Error
   tt_sbit_decoder_load_bitmap( TT_SBitDecoder  decoder,
+                               FT_UInt         load_flags,
                                FT_UInt         glyph_format,
                                FT_ULong        glyph_start,
                                FT_ULong        glyph_size,
@@ -726,12 +790,14 @@
     case 1:
     case 2:
     case 8:
+    case 17:
       error = tt_sbit_decoder_load_metrics( decoder, &p, p_limit, 0 );
       break;
 
     case 6:
     case 7:
     case 9:
+    case 18:
       error = tt_sbit_decoder_load_metrics( decoder, &p, p_limit, 1 );
       break;
 
@@ -770,11 +836,77 @@
         loader = tt_sbit_decoder_load_compound;
         break;
 
+#ifdef FT_CONFIG_OPTION_USE_PNG
+      case 17: /* small metrics, PNG image data   */
+      case 18: /* big metrics, PNG image data     */
+      case 19: /* metrics in EBLC, PNG image data */
+        loader = tt_sbit_decoder_load_png;
+        break;
+#endif /* FT_CONFIG_OPTION_USE_PNG */
+
       default:
+        error = FT_THROW( Invalid_Table );
         goto Fail;
       }
 
-      error = loader( decoder, p, p_limit, x_pos, y_pos );
+      if ( !decoder->bitmap_allocated )
+      {
+        error = tt_sbit_decoder_alloc_bitmap( decoder, load_flags );
+        if ( error )
+          goto Fail;
+      }
+
+      if ( decoder->bit_depth == 32                          &&
+           decoder->bitmap->pixel_mode != FT_PIXEL_MODE_BGRA )
+      {
+        /* Flatten color bitmaps if color was not requested. */
+
+        FT_Library library = decoder->face->root.glyph->library;
+        FT_Memory  memory  = decoder->stream->memory;
+
+        FT_Bitmap color, *orig;
+
+
+        if ( decoder->bitmap->pixel_mode != FT_PIXEL_MODE_GRAY ||
+             x_pos != 0 || y_pos != 0                          )
+        {
+          /* Shouldn't happen. */
+          error = FT_THROW( Invalid_Table );
+          goto Fail;
+        }
+
+        FT_Bitmap_New( &color );
+
+        color.rows       = decoder->bitmap->rows;
+        color.width      = decoder->bitmap->width;
+        color.pitch      = color.width * 4;
+        color.pixel_mode = FT_PIXEL_MODE_BGRA;
+
+        if ( FT_ALLOC( color.buffer, color.rows * color.pitch ) )
+          goto Fail;
+
+        orig            = decoder->bitmap;
+        decoder->bitmap = &color;
+
+        error = loader( decoder, load_flags, p, p_limit, x_pos, y_pos );
+
+        decoder->bitmap = orig;
+
+        if ( error                                         ||
+             ( error = FT_Bitmap_Convert( library,
+                                          &color,
+                                          decoder->bitmap,
+                                          1 ) )            )
+        {
+          FT_Bitmap_Done( library, &color );
+          goto Fail;
+        }
+
+        FT_Bitmap_Done( library, &color );
+      }
+
+      else
+        error = loader( decoder, load_flags, p, p_limit, x_pos, y_pos );
     }
 
   Fail:
@@ -787,6 +919,7 @@
 
   static FT_Error
   tt_sbit_decoder_load_image( TT_SBitDecoder  decoder,
+                              FT_UInt         load_flags,
                               FT_UInt         glyph_index,
                               FT_Int          x_pos,
                               FT_Int          y_pos )
@@ -915,6 +1048,7 @@
       break;
 
     case 5: /* constant metrics with sparse glyph codes */
+    case 19:
       {
         FT_ULong  image_size, mm, num_glyphs;
 
@@ -961,6 +1095,7 @@
     image_start = image_offset + image_start;
 
     return tt_sbit_decoder_load_bitmap( decoder,
+                                        load_flags,
                                         image_format,
                                         image_start,
                                         image_end,
@@ -995,11 +1130,16 @@
     error = tt_sbit_decoder_init( decoder, face, strike_index, metrics );
     if ( !error )
     {
-      error = tt_sbit_decoder_load_image( decoder, glyph_index, 0, 0 );
+      error = tt_sbit_decoder_load_image( decoder,
+                                          load_flags,
+                                          glyph_index,
+                                          0,
+                                          0 );
       tt_sbit_decoder_done( decoder );
     }
 
     return error;
   }
 
+
 /* EOF */