Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/base/ftpfr.c

Index: third_party/freetype2/src/src/base/ftpfr.c
diff --git a/third_party/freetype2/src/src/base/ftpfr.c b/third_party/freetype2/src/src/base/ftpfr.c
new file mode 100644
index 0000000000000000000000000000000000000000..39f089e3e9dd4b0d76d118c52b334e6f54bb1db2
--- /dev/null
+++ b/third_party/freetype2/src/src/base/ftpfr.c
@@ -0,0 +1,153 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftpfr.c                                                                */
+/*                                                                         */
+/*    FreeType API for accessing PFR-specific data (body).                 */
+/*                                                                         */
+/*  Copyright 2002-2015 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 <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+
+#include FT_INTERNAL_OBJECTS_H
+#include FT_SERVICE_PFR_H
+
+
+  /* check the format */
+  static FT_Service_PfrMetrics
+  ft_pfr_check( FT_Face  face )
+  {
+    FT_Service_PfrMetrics  service = NULL;
+
+
+    if ( face )
+      FT_FACE_LOOKUP_SERVICE( face, service, PFR_METRICS );
+
+    return service;
+  }
+
+
+  /* documentation is in ftpfr.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FT_Get_PFR_Metrics( FT_Face    face,
+                      FT_UInt   *aoutline_resolution,
+                      FT_UInt   *ametrics_resolution,
+                      FT_Fixed  *ametrics_x_scale,
+                      FT_Fixed  *ametrics_y_scale )
+  {
+    FT_Error               error = FT_Err_Ok;
+    FT_Service_PfrMetrics  service;
+
+
+    if ( !face )
+      return FT_THROW( Invalid_Face_Handle );
+
+    service = ft_pfr_check( face );
+    if ( service )
+    {
+      error = service->get_metrics( face,
+                                    aoutline_resolution,
+                                    ametrics_resolution,
+                                    ametrics_x_scale,
+                                    ametrics_y_scale );
+    }
+    else
+    {
+      FT_Fixed  x_scale, y_scale;
+
+
+      /* this is not a PFR font */
+      if ( aoutline_resolution )
+        *aoutline_resolution = face->units_per_EM;
+
+      if ( ametrics_resolution )
+        *ametrics_resolution = face->units_per_EM;
+
+      x_scale = y_scale = 0x10000L;
+      if ( face->size )
+      {
+        x_scale = face->size->metrics.x_scale;
+        y_scale = face->size->metrics.y_scale;
+      }
+
+      if ( ametrics_x_scale )
+        *ametrics_x_scale = x_scale;
+
+      if ( ametrics_y_scale )
+        *ametrics_y_scale = y_scale;
+
+      error = FT_THROW( Unknown_File_Format );
+    }
+
+    return error;
+  }
+
+
+  /* documentation is in ftpfr.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FT_Get_PFR_Kerning( FT_Face     face,
+                      FT_UInt     left,
+                      FT_UInt     right,
+                      FT_Vector  *avector )
+  {
+    FT_Error               error;
+    FT_Service_PfrMetrics  service;
+
+
+    if ( !face )
+      return FT_THROW( Invalid_Face_Handle );
+
+    if ( !avector )
+      return FT_THROW( Invalid_Argument );
+
+    service = ft_pfr_check( face );
+    if ( service )
+      error = service->get_kerning( face, left, right, avector );
+    else
+      error = FT_Get_Kerning( face, left, right,
+                              FT_KERNING_UNSCALED, avector );
+
+    return error;
+  }
+
+
+  /* documentation is in ftpfr.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FT_Get_PFR_Advance( FT_Face   face,
+                      FT_UInt   gindex,
+                      FT_Pos   *aadvance )
+  {
+    FT_Error               error;
+    FT_Service_PfrMetrics  service;
+
+
+    if ( !face )
+      return FT_THROW( Invalid_Face_Handle );
+
+    if ( !aadvance )
+      return FT_THROW( Invalid_Argument );
+
+    service = ft_pfr_check( face );
+    if ( service )
+      error = service->get_advance( face, gindex, aadvance );
+    else
+      /* XXX: TODO: PROVIDE ADVANCE-LOADING METHOD TO ALL FONT DRIVERS */
+      error = FT_THROW( Invalid_Argument );
+
+    return error;
+  }
+
+
+/* END */