Update freetype to 2.5.4.

third_party/freetype/src/base/ftlcdfil.c

Index: third_party/freetype/src/base/ftlcdfil.c
diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/base/fxft_ftlcdfil.c b/third_party/freetype/src/base/ftlcdfil.c
similarity index 88%
rename from core/src/fxge/fx_freetype/fxft2.5.01/src/base/fxft_ftlcdfil.c
rename to third_party/freetype/src/base/ftlcdfil.c
index 66676de916a50ee45673549b1ed0c1c5c6ce0602..d8bcbbf1d222c96fcb34d55c668d239ec47aacc4 100644
--- a/core/src/fxge/fx_freetype/fxft2.5.01/src/base/fxft_ftlcdfil.c
+++ b/third_party/freetype/src/base/ftlcdfil.c
@@ -1,11 +1,10 @@
-#if !defined(_FXFT_VERSION_) || _FXFT_VERSION_ == 2501
 /***************************************************************************/
 /*                                                                         */
 /*  ftlcdfil.c                                                             */
 /*                                                                         */
 /*    FreeType API for color filtering of subpixel bitmap glyphs (body).   */
 /*                                                                         */
-/*  Copyright 2006, 2008-2010, 2013 by                                     */
+/*  Copyright 2006, 2008-2010, 2013, 2014 by                               */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -16,13 +15,13 @@
 /*                                                                         */
 /***************************************************************************/
 
-#define FT2_BUILD_LIBRARY
-#include "../../include/ft2build.h"
-#include "../../include/freetype/internal/ftdebug.h"
 
-#include "../../include/freetype/ftlcdfil.h"
-#include "../../include/freetype/ftimage.h"
-#include "../../include/freetype/internal/ftobjs.h"
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+
+#include FT_LCD_FILTER_H
+#include FT_IMAGE_H
+#include FT_INTERNAL_OBJECTS_H
 
 
 #ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
@@ -47,9 +46,16 @@
       FT_Byte*  line = bitmap->buffer;
 
 
+      /* take care of bitmap flow */
+      if ( bitmap->pitch < 0 )
+        line -= bitmap->pitch * ( bitmap->rows - 1 );
+
+      /* `fir' and `pix' must be at least 32 bit wide, since the sum of */
+      /* the values in `weights' can exceed 0xFF                        */
+
       for ( ; height > 0; height--, line += bitmap->pitch )
       {
-        FT_UInt  fir[5];
+        FT_UInt  fir[4];        /* below, `pix' is used as the 5th element */
         FT_UInt  val1, xx;
 
 
@@ -58,7 +64,6 @@
         fir[1] = weights[3] * val1;
         fir[2] = weights[4] * val1;
         fir[3] = 0;
-        fir[4] = 0;
 
         val1    = line[1];
         fir[0] += weights[1] * val1;
@@ -105,10 +110,14 @@
       FT_Int    pitch  = bitmap->pitch;
 
 
+      /* take care of bitmap flow */
+      if ( bitmap->pitch < 0 )
+        column -= bitmap->pitch * ( bitmap->rows - 1 );
+
       for ( ; width > 0; width--, column++ )
       {
         FT_Byte*  col = column;
-        FT_UInt   fir[5];
+        FT_UInt   fir[4];       /* below, `pix' is used as the 5th element */
         FT_UInt   val1, yy;
 
 
@@ -117,7 +126,6 @@
         fir[1] = weights[3] * val1;
         fir[2] = weights[4] * val1;
         fir[3] = 0;
-        fir[4] = 0;
         col   += pitch;
 
         val1    = col[0];
@@ -154,7 +162,7 @@
           col[-2 * pitch] = (FT_Byte)pix;
 
           pix         = fir[1] >> 8;
-          pix            |= (FT_UInt)-(FT_Int)( pix >> 8 );
+          pix        |= (FT_UInt)-(FT_Int)( pix >> 8 );
           col[-pitch] = (FT_Byte)pix;
         }
       }
@@ -190,6 +198,10 @@
       FT_Byte*  line = bitmap->buffer;
 
 
+      /* take care of bitmap flow */
+      if ( bitmap->pitch < 0 )
+        line -= bitmap->pitch * ( bitmap->rows - 1 );
+
       for ( ; height > 0; height--, line += pitch )
       {
         FT_UInt  xx;
@@ -229,6 +241,10 @@
       FT_Byte*  column = bitmap->buffer;
 
 
+      /* take care of bitmap flow */
+      if ( bitmap->pitch < 0 )
+        column -= bitmap->pitch * ( bitmap->rows - 1 );
+
       for ( ; width > 0; width--, column++ )
       {
         FT_Byte*  col     = column;
@@ -273,7 +289,10 @@
   FT_Library_SetLcdFilterWeights( FT_Library      library,
                                   unsigned char  *weights )
   {
-    if ( !library || !weights )
+    if ( !library )
+      return FT_THROW( Invalid_Library_Handle );
+
+    if ( !weights )
       return FT_THROW( Invalid_Argument );
 
     ft_memcpy( library->lcd_weights, weights, 5 );
@@ -295,7 +314,7 @@
 
 
     if ( !library )
-      return FT_THROW( Invalid_Argument );
+      return FT_THROW( Invalid_Library_Handle );
 
     switch ( filter )
     {
@@ -377,5 +396,3 @@
 
 
 /* END */
-#endif
-