XFA: merge patch from CL 815103002

Update freetype to 2.5.4.

Put freetype into third_party directory, cleaning up header files.

Previously freetype header files are in core/src/fxge/freetype and core/include/thirdparties. There were also multiple fx_freetype.h.

This patch removes the additional Foxit wrapper to make further update easier.

Notice, for original freetype source code, the following files are modified and need to be updated accordingly in future update:

third_party/freetype/include/config/ftmodule.h
third_party/freetype/include/config/ftoption.h

BUG=407341
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/815103002

1 files changed, 601 insertions, 0 deletions

diff --git a/third_party/freetype/src/truetype/ttpload.c b/third_party/freetype/src/truetype/ttpload.c
new file mode 100644
index 0000000000..9991925425
--- /dev/null
+++ b/third_party/freetype/src/truetype/ttpload.c
@@ -0,0 +1,601 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ttpload.c                                                              */
+/*                                                                         */
+/*    TrueType-specific tables loader (body).                              */
+/*                                                                         */
+/*  Copyright 1996-2002, 2004-2013 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_INTERNAL_STREAM_H
+#include FT_TRUETYPE_TAGS_H
+
+#include "ttpload.h"
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
+
+#include "tterrors.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_ttpload
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    tt_face_load_loca                                                  */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Load the locations table.                                          */
+  /*                                                                       */
+  /* <InOut>                                                               */
+  /*    face   :: A handle to the target face object.                      */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    stream :: The input stream.                                        */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    FreeType error code.  0 means success.                             */
+  /*                                                                       */
+  FT_LOCAL_DEF( FT_Error )
+  tt_face_load_loca( TT_Face    face,
+                     FT_Stream  stream )
+  {
+    FT_Error  error;
+    FT_ULong  table_len;
+    FT_Int    shift;
+
+
+    /* we need the size of the `glyf' table for malformed `loca' tables */
+    error = face->goto_table( face, TTAG_glyf, stream, &face->glyf_len );
+
+    /* it is possible that a font doesn't have a glyf table at all */
+    /* or its size is zero                                         */
+    if ( FT_ERR_EQ( error, Table_Missing ) )
+      face->glyf_len = 0;
+    else if ( error )
+      goto Exit;
+
+    FT_TRACE2(( "Locations " ));
+    error = face->goto_table( face, TTAG_loca, stream, &table_len );
+    if ( error )
+    {
+      error = FT_THROW( Locations_Missing );
+      goto Exit;
+    }
+
+    if ( face->header.Index_To_Loc_Format != 0 )
+    {
+      shift = 2;
+
+      if ( table_len >= 0x40000L )
+      {
+        FT_TRACE2(( "table too large\n" ));
+        error = FT_THROW( Invalid_Table );
+        goto Exit;
+      }
+      face->num_locations = table_len >> shift;
+    }
+    else
+    {
+      shift = 1;
+
+      if ( table_len >= 0x20000L )
+      {
+        FT_TRACE2(( "table too large\n" ));
+        error = FT_THROW( Invalid_Table );
+        goto Exit;
+      }
+      face->num_locations = table_len >> shift;
+    }
+
+    if ( face->num_locations != (FT_ULong)face->root.num_glyphs + 1 )
+    {
+      FT_TRACE2(( "glyph count mismatch!  loca: %d, maxp: %d\n",
+                  face->num_locations - 1, face->root.num_glyphs ));
+
+      /* we only handle the case where `maxp' gives a larger value */
+      if ( face->num_locations <= (FT_ULong)face->root.num_glyphs )
+      {
+        FT_Long   new_loca_len =
+                    ( (FT_Long)( face->root.num_glyphs ) + 1 ) << shift;
+
+        TT_Table  entry = face->dir_tables;
+        TT_Table  limit = entry + face->num_tables;
+
+        FT_Long   pos  = FT_Stream_Pos( stream );
+        FT_Long   dist = 0x7FFFFFFFL;
+
+
+        /* compute the distance to next table in font file */
+        for ( ; entry < limit; entry++ )
+        {
+          FT_Long  diff = entry->Offset - pos;
+
+
+          if ( diff > 0 && diff < dist )
+            dist = diff;
+        }
+
+        if ( entry == limit )
+        {
+          /* `loca' is the last table */
+          dist = stream->size - pos;
+        }
+
+        if ( new_loca_len <= dist )
+        {
+          face->num_locations = face->root.num_glyphs + 1;
+          table_len           = new_loca_len;
+
+          FT_TRACE2(( "adjusting num_locations to %d\n",
+                      face->num_locations ));
+        }
+      }
+    }
+
+    /*
+     * Extract the frame.  We don't need to decompress it since
+     * we are able to parse it directly.
+     */
+    if ( FT_FRAME_EXTRACT( table_len, face->glyph_locations ) )
+      goto Exit;
+
+    FT_TRACE2(( "loaded\n" ));
+
+  Exit:
+    return error;
+  }
+
+
+  FT_LOCAL_DEF( FT_ULong )
+  tt_face_get_location( TT_Face   face,
+                        FT_UInt   gindex,
+                        FT_UInt  *asize )
+  {
+    FT_ULong  pos1, pos2;
+    FT_Byte*  p;
+    FT_Byte*  p_limit;
+
+
+    pos1 = pos2 = 0;
+
+    if ( gindex < face->num_locations )
+    {
+      if ( face->header.Index_To_Loc_Format != 0 )
+      {
+        p       = face->glyph_locations + gindex * 4;
+        p_limit = face->glyph_locations + face->num_locations * 4;
+
+        pos1 = FT_NEXT_ULONG( p );
+        pos2 = pos1;
+
+        if ( p + 4 <= p_limit )
+          pos2 = FT_NEXT_ULONG( p );
+      }
+      else
+      {
+        p       = face->glyph_locations + gindex * 2;
+        p_limit = face->glyph_locations + face->num_locations * 2;
+
+        pos1 = FT_NEXT_USHORT( p );
+        pos2 = pos1;
+
+        if ( p + 2 <= p_limit )
+          pos2 = FT_NEXT_USHORT( p );
+
+        pos1 <<= 1;
+        pos2 <<= 1;
+      }
+    }
+
+    /* Check broken location data */
+    if ( pos1 > face->glyf_len )
+    {
+      FT_TRACE1(( "tt_face_get_location:"
+                  " too large offset=0x%08lx found for gid=0x%04lx,"
+                  " exceeding the end of glyf table (0x%08lx)\n",
+                  pos1, gindex, face->glyf_len ));
+      *asize = 0;
+      return 0;
+    }
+
+    if ( pos2 > face->glyf_len )
+    {
+      FT_TRACE1(( "tt_face_get_location:"
+                  " too large offset=0x%08lx found for gid=0x%04lx,"
+                  " truncate at the end of glyf table (0x%08lx)\n",
+                  pos2, gindex + 1, face->glyf_len ));
+      pos2 = face->glyf_len;
+    }
+
+    /* The `loca' table must be ordered; it refers to the length of */
+    /* an entry as the difference between the current and the next  */
+    /* position.  However, there do exist (malformed) fonts which   */
+    /* don't obey this rule, so we are only able to provide an      */
+    /* upper bound for the size.                                    */
+    /*                                                              */
+    /* We get (intentionally) a wrong, non-zero result in case the  */
+    /* `glyf' table is missing.                                     */
+    if ( pos2 >= pos1 )
+      *asize = (FT_UInt)( pos2 - pos1 );
+    else
+      *asize = (FT_UInt)( face->glyf_len - pos1 );
+
+    return pos1;
+  }
+
+
+  FT_LOCAL_DEF( void )
+  tt_face_done_loca( TT_Face  face )
+  {
+    FT_Stream  stream = face->root.stream;
+
+
+    FT_FRAME_RELEASE( face->glyph_locations );
+    face->num_locations = 0;
+  }
+
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    tt_face_load_cvt                                                   */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Load the control value table into a face object.                   */
+  /*                                                                       */
+  /* <InOut>                                                               */
+  /*    face   :: A handle to the target face object.                      */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    stream :: A handle to the input stream.                            */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    FreeType error code.  0 means success.                             */
+  /*                                                                       */
+  FT_LOCAL_DEF( FT_Error )
+  tt_face_load_cvt( TT_Face    face,
+                    FT_Stream  stream )
+  {
+#ifdef TT_USE_BYTECODE_INTERPRETER
+
+    FT_Error   error;
+    FT_Memory  memory = stream->memory;
+    FT_ULong   table_len;
+
+
+    FT_TRACE2(( "CVT " ));
+
+    error = face->goto_table( face, TTAG_cvt, stream, &table_len );
+    if ( error )
+    {
+      FT_TRACE2(( "is missing\n" ));
+
+      face->cvt_size = 0;
+      face->cvt      = NULL;
+      error          = FT_Err_Ok;
+
+      goto Exit;
+    }
+
+    face->cvt_size = table_len / 2;
+
+    if ( FT_NEW_ARRAY( face->cvt, face->cvt_size ) )
+      goto Exit;
+
+    if ( FT_FRAME_ENTER( face->cvt_size * 2L ) )
+      goto Exit;
+
+    {
+      FT_Short*  cur   = face->cvt;
+      FT_Short*  limit = cur + face->cvt_size;
+
+
+      for ( ; cur < limit; cur++ )
+        *cur = FT_GET_SHORT();
+    }
+
+    FT_FRAME_EXIT();
+    FT_TRACE2(( "loaded\n" ));
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+    if ( face->doblend )
+      error = tt_face_vary_cvt( face, stream );
+#endif
+
+  Exit:
+    return error;
+
+#else /* !TT_USE_BYTECODE_INTERPRETER */
+
+    FT_UNUSED( face   );
+    FT_UNUSED( stream );
+
+    return FT_Err_Ok;
+
+#endif
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    tt_face_load_fpgm                                                  */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Load the font program.                                             */
+  /*                                                                       */
+  /* <InOut>                                                               */
+  /*    face   :: A handle to the target face object.                      */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    stream :: A handle to the input stream.                            */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    FreeType error code.  0 means success.                             */
+  /*                                                                       */
+  FT_LOCAL_DEF( FT_Error )
+  tt_face_load_fpgm( TT_Face    face,
+                     FT_Stream  stream )
+  {
+#ifdef TT_USE_BYTECODE_INTERPRETER
+
+    FT_Error  error;
+    FT_ULong  table_len;
+
+
+    FT_TRACE2(( "Font program " ));
+
+    /* The font program is optional */
+    error = face->goto_table( face, TTAG_fpgm, stream, &table_len );
+    if ( error )
+    {
+      face->font_program      = NULL;
+      face->font_program_size = 0;
+      error                   = FT_Err_Ok;
+
+      FT_TRACE2(( "is missing\n" ));
+    }
+    else
+    {
+      face->font_program_size = table_len;
+      if ( FT_FRAME_EXTRACT( table_len, face->font_program ) )
+        goto Exit;
+
+      FT_TRACE2(( "loaded, %12d bytes\n", face->font_program_size ));
+    }
+
+  Exit:
+    return error;
+
+#else /* !TT_USE_BYTECODE_INTERPRETER */
+
+    FT_UNUSED( face   );
+    FT_UNUSED( stream );
+
+    return FT_Err_Ok;
+
+#endif
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    tt_face_load_prep                                                  */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Load the cvt program.                                              */
+  /*                                                                       */
+  /* <InOut>                                                               */
+  /*    face   :: A handle to the target face object.                      */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    stream :: A handle to the input stream.                            */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    FreeType error code.  0 means success.                             */
+  /*                                                                       */
+  FT_LOCAL_DEF( FT_Error )
+  tt_face_load_prep( TT_Face    face,
+                     FT_Stream  stream )
+  {
+#ifdef TT_USE_BYTECODE_INTERPRETER
+
+    FT_Error  error;
+    FT_ULong  table_len;
+
+
+    FT_TRACE2(( "Prep program " ));
+
+    error = face->goto_table( face, TTAG_prep, stream, &table_len );
+    if ( error )
+    {
+      face->cvt_program      = NULL;
+      face->cvt_program_size = 0;
+      error                  = FT_Err_Ok;
+
+      FT_TRACE2(( "is missing\n" ));
+    }
+    else
+    {
+      face->cvt_program_size = table_len;
+      if ( FT_FRAME_EXTRACT( table_len, face->cvt_program ) )
+        goto Exit;
+
+      FT_TRACE2(( "loaded, %12d bytes\n", face->cvt_program_size ));
+    }
+
+  Exit:
+    return error;
+
+#else /* !TT_USE_BYTECODE_INTERPRETER */
+
+    FT_UNUSED( face   );
+    FT_UNUSED( stream );
+
+    return FT_Err_Ok;
+
+#endif
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    tt_face_load_hdmx                                                  */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Load the `hdmx' table into the face object.                        */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    face   :: A handle to the target face object.                      */
+  /*                                                                       */
+  /*    stream :: A handle to the input stream.                            */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    FreeType error code.  0 means success.                             */
+  /*                                                                       */
+
+  FT_LOCAL_DEF( FT_Error )
+  tt_face_load_hdmx( TT_Face    face,
+                     FT_Stream  stream )
+  {
+    FT_Error   error;
+    FT_Memory  memory = stream->memory;
+    FT_UInt    version, nn, num_records;
+    FT_ULong   table_size, record_size;
+    FT_Byte*   p;
+    FT_Byte*   limit;
+
+
+    /* this table is optional */
+    error = face->goto_table( face, TTAG_hdmx, stream, &table_size );
+    if ( error || table_size < 8 )
+      return FT_Err_Ok;
+
+    if ( FT_FRAME_EXTRACT( table_size, face->hdmx_table ) )
+      goto Exit;
+
+    p     = face->hdmx_table;
+    limit = p + table_size;
+
+    version     = FT_NEXT_USHORT( p );
+    num_records = FT_NEXT_USHORT( p );
+    record_size = FT_NEXT_ULONG( p );
+
+    /* The maximum number of bytes in an hdmx device record is the */
+    /* maximum number of glyphs + 2; this is 0xFFFF + 2, thus      */
+    /* explaining why `record_size' is a long (which we read as    */
+    /* unsigned long for convenience).  In practice, two bytes are */
+    /* sufficient to hold the size value.                          */
+    /*                                                             */
+    /* There are at least two fonts, HANNOM-A and HANNOM-B version */
+    /* 2.0 (2005), which get this wrong: The upper two bytes of    */
+    /* the size value are set to 0xFF instead of 0x00.  We catch   */
+    /* and fix this.                                               */
+
+    if ( record_size >= 0xFFFF0000UL )
+      record_size &= 0xFFFFU;
+
+    /* The limit for `num_records' is a heuristic value. */
+    if ( version != 0           ||
+         num_records > 255      ||
+         record_size > 0x10001L ||
+         record_size < 4        )
+    {
+      error = FT_THROW( Invalid_File_Format );
+      goto Fail;
+    }
+
+    if ( FT_NEW_ARRAY( face->hdmx_record_sizes, num_records ) )
+      goto Fail;
+
+    for ( nn = 0; nn < num_records; nn++ )
+    {
+      if ( p + record_size > limit )
+        break;
+
+      face->hdmx_record_sizes[nn] = p[0];
+      p                          += record_size;
+    }
+
+    face->hdmx_record_count = nn;
+    face->hdmx_table_size   = table_size;
+    face->hdmx_record_size  = record_size;
+
+  Exit:
+    return error;
+
+  Fail:
+    FT_FRAME_RELEASE( face->hdmx_table );
+    face->hdmx_table_size = 0;
+    goto Exit;
+  }
+
+
+  FT_LOCAL_DEF( void )
+  tt_face_free_hdmx( TT_Face  face )
+  {
+    FT_Stream  stream = face->root.stream;
+    FT_Memory  memory = stream->memory;
+
+
+    FT_FREE( face->hdmx_record_sizes );
+    FT_FRAME_RELEASE( face->hdmx_table );
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Return the advance width table for a given pixel size if it is found  */
+  /* in the font's `hdmx' table (if any).                                  */
+  /*                                                                       */
+  FT_LOCAL_DEF( FT_Byte* )
+  tt_face_get_device_metrics( TT_Face  face,
+                              FT_UInt  ppem,
+                              FT_UInt  gindex )
+  {
+    FT_UInt   nn;
+    FT_Byte*  result      = NULL;
+    FT_ULong  record_size = face->hdmx_record_size;
+    FT_Byte*  record      = face->hdmx_table + 8;
+
+
+    for ( nn = 0; nn < face->hdmx_record_count; nn++ )
+      if ( face->hdmx_record_sizes[nn] == ppem )
+      {
+        gindex += 2;
+        if ( gindex < record_size )
+          result = record + nn * record_size + gindex;
+        break;
+      }
+
+    return result;
+  }
+
+
+/* END */