Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/autofit/afmodule.c

Index: third_party/freetype2/src/src/autofit/afmodule.c
diff --git a/third_party/freetype2/src/src/autofit/afmodule.c b/third_party/freetype2/src/src/autofit/afmodule.c
new file mode 100644
index 0000000000000000000000000000000000000000..45fd3602c8d2ba94297ffd17ca9b75cff6fa4659
--- /dev/null
+++ b/third_party/freetype2/src/src/autofit/afmodule.c
@@ -0,0 +1,486 @@
+/***************************************************************************/
+/*                                                                         */
+/*  afmodule.c                                                             */
+/*                                                                         */
+/*    Auto-fitter module implementation (body).                            */
+/*                                                                         */
+/*  Copyright 2003-2015 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  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 "afglobal.h"
+#include "afmodule.h"
+#include "afloader.h"
+#include "aferrors.h"
+#include "afpic.h"
+
+#ifdef FT_DEBUG_AUTOFIT
+
+#ifndef FT_MAKE_OPTION_SINGLE_OBJECT
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+  extern void
+  af_glyph_hints_dump_segments( AF_GlyphHints  hints,
+                                FT_Bool        to_stdout );
+  extern void
+  af_glyph_hints_dump_points( AF_GlyphHints  hints,
+                              FT_Bool        to_stdout );
+  extern void
+  af_glyph_hints_dump_edges( AF_GlyphHints  hints,
+                             FT_Bool        to_stdout );
+#ifdef __cplusplus
+  }
+#endif
+
+#endif
+
+  int  _af_debug_disable_horz_hints;
+  int  _af_debug_disable_vert_hints;
+  int  _af_debug_disable_blue_hints;
+
+  /* we use a global object instead of a local one for debugging */
+  AF_GlyphHintsRec  _af_debug_hints_rec[1];
+
+  void*  _af_debug_hints = _af_debug_hints_rec;
+#endif
+
+#include FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_DEBUG_H
+#include FT_AUTOHINTER_H
+#include FT_SERVICE_PROPERTIES_H
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
+  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
+  /* messages during execution.                                            */
+  /*                                                                       */
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_afmodule
+
+
+  static FT_Error
+  af_property_get_face_globals( FT_Face          face,
+                                AF_FaceGlobals*  aglobals,
+                                AF_Module        module )
+  {
+    FT_Error        error = FT_Err_Ok;
+    AF_FaceGlobals  globals;
+
+
+    if ( !face )
+      return FT_THROW( Invalid_Face_Handle );
+
+    globals = (AF_FaceGlobals)face->autohint.data;
+    if ( !globals )
+    {
+      /* trigger computation of the global style data */
+      /* in case it hasn't been done yet              */
+      error = af_face_globals_new( face, &globals, module );
+      if ( !error )
+      {
+        face->autohint.data =
+          (FT_Pointer)globals;
+        face->autohint.finalizer =
+          (FT_Generic_Finalizer)af_face_globals_free;
+      }
+    }
+
+    if ( !error )
+      *aglobals = globals;
+
+    return error;
+  }
+
+
+  static FT_Error
+  af_property_set( FT_Module    ft_module,
+                   const char*  property_name,
+                   const void*  value )
+  {
+    FT_Error   error  = FT_Err_Ok;
+    AF_Module  module = (AF_Module)ft_module;
+
+
+    if ( !ft_strcmp( property_name, "fallback-script" ) )
+    {
+      FT_UInt*  fallback_script = (FT_UInt*)value;
+
+      FT_UInt  ss;
+
+
+      /* We translate the fallback script to a fallback style that uses */
+      /* `fallback-script' as its script and `AF_COVERAGE_NONE' as its  */
+      /* coverage value.                                                */
+      for ( ss = 0; AF_STYLE_CLASSES_GET[ss]; ss++ )
+      {
+        AF_StyleClass  style_class = AF_STYLE_CLASSES_GET[ss];
+
+
+        if ( (FT_UInt)style_class->script == *fallback_script &&
+             style_class->coverage == AF_COVERAGE_DEFAULT     )
+        {
+          module->fallback_style = ss;
+          break;
+        }
+      }
+
+      if ( !AF_STYLE_CLASSES_GET[ss] )
+      {
+        FT_TRACE0(( "af_property_set: Invalid value %d for property `%s'\n",
+                    fallback_script, property_name ));
+        return FT_THROW( Invalid_Argument );
+      }
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "default-script" ) )
+    {
+      FT_UInt*  default_script = (FT_UInt*)value;
+
+
+      module->default_script = *default_script;
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "increase-x-height" ) )
+    {
+      FT_Prop_IncreaseXHeight*  prop = (FT_Prop_IncreaseXHeight*)value;
+      AF_FaceGlobals            globals;
+
+
+      error = af_property_get_face_globals( prop->face, &globals, module );
+      if ( !error )
+        globals->increase_x_height = prop->limit;
+
+      return error;
+    }
+#ifdef AF_CONFIG_OPTION_USE_WARPER
+    else if ( !ft_strcmp( property_name, "warping" ) )
+    {
+      FT_Bool*  warping = (FT_Bool*)value;
+
+
+      module->warping = *warping;
+
+      return error;
+    }
+#endif /* AF_CONFIG_OPTION_USE_WARPER */
+    else if ( !ft_strcmp( property_name, "darkening-parameters" ) )
+    {
+      FT_Int*  darken_params = (FT_Int*)value;
+
+      FT_Int  x1 = darken_params[0];
+      FT_Int  y1 = darken_params[1];
+      FT_Int  x2 = darken_params[2];
+      FT_Int  y2 = darken_params[3];
+      FT_Int  x3 = darken_params[4];
+      FT_Int  y3 = darken_params[5];
+      FT_Int  x4 = darken_params[6];
+      FT_Int  y4 = darken_params[7];
+
+
+      if ( x1 < 0   || x2 < 0   || x3 < 0   || x4 < 0   ||
+           y1 < 0   || y2 < 0   || y3 < 0   || y4 < 0   ||
+           x1 > x2  || x2 > x3  || x3 > x4              ||
+           y1 > 500 || y2 > 500 || y3 > 500 || y4 > 500 )
+        return FT_THROW( Invalid_Argument );
+
+      module->darken_params[0] = x1;
+      module->darken_params[1] = y1;
+      module->darken_params[2] = x2;
+      module->darken_params[3] = y2;
+      module->darken_params[4] = x3;
+      module->darken_params[5] = y3;
+      module->darken_params[6] = x4;
+      module->darken_params[7] = y4;
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "no-stem-darkening" ) )
+    {
+      FT_Bool*  no_stem_darkening = (FT_Bool*)value;
+
+
+      module->no_stem_darkening = *no_stem_darkening;
+
+      return error;
+    }
+
+    FT_TRACE0(( "af_property_set: missing property `%s'\n",
+                property_name ));
+    return FT_THROW( Missing_Property );
+  }
+
+
+  static FT_Error
+  af_property_get( FT_Module    ft_module,
+                   const char*  property_name,
+                   void*        value )
+  {
+    FT_Error   error          = FT_Err_Ok;
+    AF_Module  module         = (AF_Module)ft_module;
+    FT_UInt    fallback_style = module->fallback_style;
+    FT_UInt    default_script = module->default_script;
+#ifdef AF_CONFIG_OPTION_USE_WARPER
+    FT_Bool    warping        = module->warping;
+#endif
+
+
+    if ( !ft_strcmp( property_name, "glyph-to-script-map" ) )
+    {
+      FT_Prop_GlyphToScriptMap*  prop = (FT_Prop_GlyphToScriptMap*)value;
+      AF_FaceGlobals             globals;
+
+
+      error = af_property_get_face_globals( prop->face, &globals, module );
+      if ( !error )
+        prop->map = globals->glyph_styles;
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "fallback-script" ) )
+    {
+      FT_UInt*  val = (FT_UInt*)value;
+
+      AF_StyleClass  style_class = AF_STYLE_CLASSES_GET[fallback_style];
+
+
+      *val = style_class->script;
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "default-script" ) )
+    {
+      FT_UInt*  val = (FT_UInt*)value;
+
+
+      *val = default_script;
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "increase-x-height" ) )
+    {
+      FT_Prop_IncreaseXHeight*  prop = (FT_Prop_IncreaseXHeight*)value;
+      AF_FaceGlobals            globals;
+
+
+      error = af_property_get_face_globals( prop->face, &globals, module );
+      if ( !error )
+        prop->limit = globals->increase_x_height;
+
+      return error;
+    }
+#ifdef AF_CONFIG_OPTION_USE_WARPER
+    else if ( !ft_strcmp( property_name, "warping" ) )
+    {
+      FT_Bool*  val = (FT_Bool*)value;
+
+
+      *val = warping;
+
+      return error;
+    }
+#endif /* AF_CONFIG_OPTION_USE_WARPER */
+    else if ( !ft_strcmp( property_name, "darkening-parameters" ) )
+    {
+      FT_Int*  darken_params = module->darken_params;
+      FT_Int*  val           = (FT_Int*)value;
+
+
+      val[0] = darken_params[0];
+      val[1] = darken_params[1];
+      val[2] = darken_params[2];
+      val[3] = darken_params[3];
+      val[4] = darken_params[4];
+      val[5] = darken_params[5];
+      val[6] = darken_params[6];
+      val[7] = darken_params[7];
+
+      return error;
+    }
+    else if ( !ft_strcmp( property_name, "no-stem-darkening" ) )
+    {
+      FT_Bool   no_stem_darkening = module->no_stem_darkening;
+      FT_Bool*  val               = (FT_Bool*)value;
+
+
+      *val = no_stem_darkening;
+
+      return error;
+    }
+
+    FT_TRACE0(( "af_property_get: missing property `%s'\n",
+                property_name ));
+    return FT_THROW( Missing_Property );
+  }
+
+
+  FT_DEFINE_SERVICE_PROPERTIESREC(
+    af_service_properties,
+    (FT_Properties_SetFunc)af_property_set,        /* set_property */
+    (FT_Properties_GetFunc)af_property_get )       /* get_property */
+
+
+  FT_DEFINE_SERVICEDESCREC1(
+    af_services,
+    FT_SERVICE_ID_PROPERTIES, &AF_SERVICE_PROPERTIES_GET )
+
+
+  FT_CALLBACK_DEF( FT_Module_Interface )
+  af_get_interface( FT_Module    module,
+                    const char*  module_interface )
+  {
+    /* AF_SERVICES_GET dereferences `library' in PIC mode */
+#ifdef FT_CONFIG_OPTION_PIC
+    FT_Library  library;
+
+
+    if ( !module )
+      return NULL;
+    library = module->library;
+    if ( !library )
+      return NULL;
+#else
+    FT_UNUSED( module );
+#endif
+
+    return ft_service_list_lookup( AF_SERVICES_GET, module_interface );
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  af_autofitter_init( FT_Module  ft_module )      /* AF_Module */
+  {
+    AF_Module  module = (AF_Module)ft_module;
+
+
+    module->fallback_style    = AF_STYLE_FALLBACK;
+    module->default_script    = AF_SCRIPT_DEFAULT;
+#ifdef AF_CONFIG_OPTION_USE_WARPER
+    module->warping           = 0;
+#endif
+    module->no_stem_darkening = TRUE;
+
+    module->darken_params[0]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1;
+    module->darken_params[1]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1;
+    module->darken_params[2]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2;
+    module->darken_params[3]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2;
+    module->darken_params[4]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3;
+    module->darken_params[5]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3;
+    module->darken_params[6]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4;
+    module->darken_params[7]  = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4;
+
+    return FT_Err_Ok;
+  }
+
+
+  FT_CALLBACK_DEF( void )
+  af_autofitter_done( FT_Module  ft_module )      /* AF_Module */
+  {
+    FT_UNUSED( ft_module );
+
+#ifdef FT_DEBUG_AUTOFIT
+    if ( _af_debug_hints_rec->memory )
+      af_glyph_hints_done( _af_debug_hints_rec );
+#endif
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  af_autofitter_load_glyph( AF_Module     module,
+                            FT_GlyphSlot  slot,
+                            FT_Size       size,
+                            FT_UInt       glyph_index,
+                            FT_Int32      load_flags )
+  {
+    FT_Error   error  = FT_Err_Ok;
+    FT_Memory  memory = module->root.library->memory;
+
+#ifdef FT_DEBUG_AUTOFIT
+
+    /* in debug mode, we use a global object that survives this routine */
+
+    AF_GlyphHints  hints = _af_debug_hints_rec;
+    AF_LoaderRec   loader[1];
+
+    FT_UNUSED( size );
+
+
+    if ( hints->memory )
+      af_glyph_hints_done( hints );
+
+    af_glyph_hints_init( hints, memory );
+    af_loader_init( loader, hints );
+
+    error = af_loader_load_glyph( loader, module, slot->face,
+                                  glyph_index, load_flags );
+
+    af_glyph_hints_dump_points( hints, 0 );
+    af_glyph_hints_dump_segments( hints, 0 );
+    af_glyph_hints_dump_edges( hints, 0 );
+
+    af_loader_done( loader );
+
+    return error;
+
+#else /* !FT_DEBUG_AUTOFIT */
+
+    AF_GlyphHintsRec  hints[1];
+    AF_LoaderRec      loader[1];
+
+    FT_UNUSED( size );
+
+
+    af_glyph_hints_init( hints, memory );
+    af_loader_init( loader, hints );
+
+    error = af_loader_load_glyph( loader, module, slot->face,
+                                  glyph_index, load_flags );
+
+    af_loader_done( loader );
+    af_glyph_hints_done( hints );
+
+    return error;
+
+#endif /* !FT_DEBUG_AUTOFIT */
+  }
+
+
+  FT_DEFINE_AUTOHINTER_INTERFACE(
+    af_autofitter_interface,
+    NULL,                                                    /* reset_face */
+    NULL,                                              /* get_global_hints */
+    NULL,                                             /* done_global_hints */
+    (FT_AutoHinter_GlyphLoadFunc)af_autofitter_load_glyph )  /* load_glyph */
+
+
+  FT_DEFINE_MODULE(
+    autofit_module_class,
+
+    FT_MODULE_HINTER,
+    sizeof ( AF_ModuleRec ),
+
+    "autofitter",
+    0x10000L,   /* version 1.0 of the autofitter  */
+    0x20000L,   /* requires FreeType 2.0 or above */
+
+    (const void*)&AF_INTERFACE_GET,
+
+    (FT_Module_Constructor)af_autofitter_init,
+    (FT_Module_Destructor) af_autofitter_done,
+    (FT_Module_Requester)  af_get_interface )
+
+
+/* END */