Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/truetype/ttobjs.h

Index: third_party/freetype2/src/src/truetype/ttobjs.h
diff --git a/third_party/freetype2/src/src/truetype/ttobjs.h b/third_party/freetype2/src/src/truetype/ttobjs.h
new file mode 100644
index 0000000000000000000000000000000000000000..9396089a991168a61dfc3663e18d7648cb64e9e7
--- /dev/null
+++ b/third_party/freetype2/src/src/truetype/ttobjs.h
@@ -0,0 +1,425 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ttobjs.h                                                               */
+/*                                                                         */
+/*    Objects manager (specification).                                     */
+/*                                                                         */
+/*  Copyright 1996-2015 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.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __TTOBJS_H__
+#define __TTOBJS_H__
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_TRUETYPE_TYPES_H
+
+
+FT_BEGIN_HEADER
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Type>                                                                */
+  /*    TT_Driver                                                          */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    A handle to a TrueType driver object.                              */
+  /*                                                                       */
+  typedef struct TT_DriverRec_*  TT_Driver;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Type>                                                                */
+  /*    TT_GlyphSlot                                                       */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    A handle to a TrueType glyph slot object.                          */
+  /*                                                                       */
+  /* <Note>                                                                */
+  /*    This is a direct typedef of FT_GlyphSlot, as there is nothing      */
+  /*    specific about the TrueType glyph slot.                            */
+  /*                                                                       */
+  typedef FT_GlyphSlot  TT_GlyphSlot;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Struct>                                                              */
+  /*    TT_GraphicsState                                                   */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The TrueType graphics state used during bytecode interpretation.   */
+  /*                                                                       */
+  typedef struct  TT_GraphicsState_
+  {
+    FT_UShort      rp0;
+    FT_UShort      rp1;
+    FT_UShort      rp2;
+
+    FT_UnitVector  dualVector;
+    FT_UnitVector  projVector;
+    FT_UnitVector  freeVector;
+
+#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
+    FT_Bool        both_x_axis;
+#endif
+
+    FT_Long        loop;
+    FT_F26Dot6     minimum_distance;
+    FT_Int         round_state;
+
+    FT_Bool        auto_flip;
+    FT_F26Dot6     control_value_cutin;
+    FT_F26Dot6     single_width_cutin;
+    FT_F26Dot6     single_width_value;
+    FT_UShort      delta_base;
+    FT_UShort      delta_shift;
+
+    FT_Byte        instruct_control;
+    /* According to Greg Hitchcock from Microsoft, the `scan_control'     */
+    /* variable as documented in the TrueType specification is a 32-bit   */
+    /* integer; the high-word part holds the SCANTYPE value, the low-word */
+    /* part the SCANCTRL value.  We separate it into two fields.          */
+    FT_Bool        scan_control;
+    FT_Int         scan_type;
+
+    FT_UShort      gep0;
+    FT_UShort      gep1;
+    FT_UShort      gep2;
+
+  } TT_GraphicsState;
+
+
+#ifdef TT_USE_BYTECODE_INTERPRETER
+
+  FT_LOCAL( void )
+  tt_glyphzone_done( TT_GlyphZone  zone );
+
+  FT_LOCAL( FT_Error )
+  tt_glyphzone_new( FT_Memory     memory,
+                    FT_UShort     maxPoints,
+                    FT_Short      maxContours,
+                    TT_GlyphZone  zone );
+
+#endif /* TT_USE_BYTECODE_INTERPRETER */
+
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /*  EXECUTION SUBTABLES                                                  */
+  /*                                                                       */
+  /*  These sub-tables relate to instruction execution.                    */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+#define TT_MAX_CODE_RANGES  3
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* There can only be 3 active code ranges at once:                       */
+  /*   - the Font Program                                                  */
+  /*   - the CVT Program                                                   */
+  /*   - a glyph's instructions set                                        */
+  /*                                                                       */
+  typedef enum  TT_CodeRange_Tag_
+  {
+    tt_coderange_none = 0,
+    tt_coderange_font,
+    tt_coderange_cvt,
+    tt_coderange_glyph
+
+  } TT_CodeRange_Tag;
+
+
+  typedef struct  TT_CodeRange_
+  {
+    FT_Byte*  base;
+    FT_Long   size;
+
+  } TT_CodeRange;
+
+  typedef TT_CodeRange  TT_CodeRangeTable[TT_MAX_CODE_RANGES];
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Defines a function/instruction definition record.                     */
+  /*                                                                       */
+  typedef struct  TT_DefRecord_
+  {
+    FT_Int    range;          /* in which code range is it located?     */
+    FT_Long   start;          /* where does it start?                   */
+    FT_Long   end;            /* where does it end?                     */
+    FT_UInt   opc;            /* function #, or instruction code        */
+    FT_Bool   active;         /* is it active?                          */
+    FT_Bool   inline_delta;   /* is function that defines inline delta? */
+    FT_ULong  sph_fdef_flags; /* flags to identify special functions    */
+
+  } TT_DefRecord, *TT_DefArray;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Subglyph transformation record.                                       */
+  /*                                                                       */
+  typedef struct  TT_Transform_
+  {
+    FT_Fixed    xx, xy;     /* transformation matrix coefficients */
+    FT_Fixed    yx, yy;
+    FT_F26Dot6  ox, oy;     /* offsets                            */
+
+  } TT_Transform;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* A note regarding non-squared pixels:                                  */
+  /*                                                                       */
+  /* (This text will probably go into some docs at some time; for now, it  */
+  /* is kept here to explain some definitions in the TT_Size_Metrics       */
+  /* record).                                                              */
+  /*                                                                       */
+  /* The CVT is a one-dimensional array containing values that control     */
+  /* certain important characteristics in a font, like the height of all   */
+  /* capitals, all lowercase letter, default spacing or stem width/height. */
+  /*                                                                       */
+  /* These values are found in FUnits in the font file, and must be scaled */
+  /* to pixel coordinates before being used by the CVT and glyph programs. */
+  /* Unfortunately, when using distinct x and y resolutions (or distinct x */
+  /* and y pointsizes), there are two possible scalings.                   */
+  /*                                                                       */
+  /* A first try was to implement a `lazy' scheme where all values were    */
+  /* scaled when first used.  However, while some values are always used   */
+  /* in the same direction, some others are used under many different      */
+  /* circumstances and orientations.                                       */
+  /*                                                                       */
+  /* I have found a simpler way to do the same, and it even seems to work  */
+  /* in most of the cases:                                                 */
+  /*                                                                       */
+  /* - All CVT values are scaled to the maximum ppem size.                 */
+  /*                                                                       */
+  /* - When performing a read or write in the CVT, a ratio factor is used  */
+  /*   to perform adequate scaling.  Example:                              */
+  /*                                                                       */
+  /*     x_ppem = 14                                                       */
+  /*     y_ppem = 10                                                       */
+  /*                                                                       */
+  /*   We choose ppem = x_ppem = 14 as the CVT scaling size.  All cvt      */
+  /*   entries are scaled to it.                                           */
+  /*                                                                       */
+  /*     x_ratio = 1.0                                                     */
+  /*     y_ratio = y_ppem/ppem (< 1.0)                                     */
+  /*                                                                       */
+  /*   We compute the current ratio like:                                  */
+  /*                                                                       */
+  /*   - If projVector is horizontal,                                      */
+  /*       ratio = x_ratio = 1.0                                           */
+  /*                                                                       */
+  /*   - if projVector is vertical,                                        */
+  /*       ratio = y_ratio                                                 */
+  /*                                                                       */
+  /*   - else,                                                             */
+  /*       ratio = sqrt( (proj.x * x_ratio) ^ 2 + (proj.y * y_ratio) ^ 2 ) */
+  /*                                                                       */
+  /*   Reading a cvt value returns                                         */
+  /*     ratio * cvt[index]                                                */
+  /*                                                                       */
+  /*   Writing a cvt value in pixels:                                      */
+  /*     cvt[index] / ratio                                                */
+  /*                                                                       */
+  /*   The current ppem is simply                                          */
+  /*     ratio * ppem                                                      */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Metrics used by the TrueType size and context objects.                */
+  /*                                                                       */
+  typedef struct  TT_Size_Metrics_
+  {
+    /* for non-square pixels */
+    FT_Long     x_ratio;
+    FT_Long     y_ratio;
+
+    FT_UShort   ppem;               /* maximum ppem size              */
+    FT_Long     ratio;              /* current ratio                  */
+    FT_Fixed    scale;
+
+    FT_F26Dot6  compensations[4];   /* device-specific compensations  */
+
+    FT_Bool     valid;
+
+    FT_Bool     rotated;            /* `is the glyph rotated?'-flag   */
+    FT_Bool     stretched;          /* `is the glyph stretched?'-flag */
+
+  } TT_Size_Metrics;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* TrueType size class.                                                  */
+  /*                                                                       */
+  typedef struct  TT_SizeRec_
+  {
+    FT_SizeRec         root;
+
+    /* we have our own copy of metrics so that we can modify */
+    /* it without affecting auto-hinting (when used)         */
+    FT_Size_Metrics    metrics;
+
+    TT_Size_Metrics    ttmetrics;
+
+    FT_ULong           strike_index;      /* 0xFFFFFFFF to indicate invalid */
+
+#ifdef TT_USE_BYTECODE_INTERPRETER
+
+    FT_UInt            num_function_defs; /* number of function definitions */
+    FT_UInt            max_function_defs;
+    TT_DefArray        function_defs;     /* table of function definitions  */
+
+    FT_UInt            num_instruction_defs;  /* number of ins. definitions */
+    FT_UInt            max_instruction_defs;
+    TT_DefArray        instruction_defs;      /* table of ins. definitions  */
+
+    FT_UInt            max_func;
+    FT_UInt            max_ins;
+
+    TT_CodeRangeTable  codeRangeTable;
+
+    TT_GraphicsState   GS;
+
+    FT_ULong           cvt_size;      /* the scaled control value table */
+    FT_Long*           cvt;
+
+    FT_UShort          storage_size; /* The storage area is now part of */
+    FT_Long*           storage;      /* the instance                    */
+
+    TT_GlyphZoneRec    twilight;     /* The instance's twilight zone    */
+
+    TT_ExecContext     context;
+
+    /* if negative, `fpgm' (resp. `prep'), wasn't executed yet; */
+    /* otherwise it is the returned error code                  */
+    FT_Error           bytecode_ready;
+    FT_Error           cvt_ready;
+
+#endif /* TT_USE_BYTECODE_INTERPRETER */
+
+  } TT_SizeRec;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* TrueType driver class.                                                */
+  /*                                                                       */
+  typedef struct  TT_DriverRec_
+  {
+    FT_DriverRec  root;
+
+    TT_GlyphZoneRec  zone;     /* glyph loader points zone */
+
+    FT_UInt  interpreter_version;
+
+  } TT_DriverRec;
+
+
+  /* Note: All of the functions below (except tt_size_reset()) are used    */
+  /* as function pointers in a FT_Driver_ClassRec.  Therefore their        */
+  /* parameters are of types FT_Face, FT_Size, etc., rather than TT_Face,  */
+  /* TT_Size, etc., so that the compiler can confirm that the types and    */
+  /* number of parameters are correct.  In all cases the FT_xxx types are  */
+  /* cast to their TT_xxx counterparts inside the functions since FreeType */
+  /* will always use the TT driver to create them.                         */
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Face functions                                                        */
+  /*                                                                       */
+  FT_LOCAL( FT_Error )
+  tt_face_init( FT_Stream      stream,
+                FT_Face        ttface,      /* TT_Face */
+                FT_Int         face_index,
+                FT_Int         num_params,
+                FT_Parameter*  params );
+
+  FT_LOCAL( void )
+  tt_face_done( FT_Face  ttface );          /* TT_Face */
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Size functions                                                        */
+  /*                                                                       */
+  FT_LOCAL( FT_Error )
+  tt_size_init( FT_Size  ttsize );          /* TT_Size */
+
+  FT_LOCAL( void )
+  tt_size_done( FT_Size  ttsize );          /* TT_Size */
+
+#ifdef TT_USE_BYTECODE_INTERPRETER
+
+  FT_LOCAL( FT_Error )
+  tt_size_run_fpgm( TT_Size  size,
+                    FT_Bool  pedantic );
+
+  FT_LOCAL( FT_Error )
+  tt_size_run_prep( TT_Size  size,
+                    FT_Bool  pedantic );
+
+  FT_LOCAL( FT_Error )
+  tt_size_ready_bytecode( TT_Size  size,
+                          FT_Bool  pedantic );
+
+#endif /* TT_USE_BYTECODE_INTERPRETER */
+
+  FT_LOCAL( FT_Error )
+  tt_size_reset( TT_Size  size );
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Driver functions                                                      */
+  /*                                                                       */
+  FT_LOCAL( FT_Error )
+  tt_driver_init( FT_Module  ttdriver );    /* TT_Driver */
+
+  FT_LOCAL( void )
+  tt_driver_done( FT_Module  ttdriver );    /* TT_Driver */
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Slot functions                                                        */
+  /*                                                                       */
+  FT_LOCAL( FT_Error )
+  tt_slot_init( FT_GlyphSlot  slot );
+
+
+  /* auxiliary */
+#define IS_HINTED( flags )  ( ( flags & FT_LOAD_NO_HINTING ) == 0 )
+
+
+FT_END_HEADER
+
+#endif /* __TTOBJS_H__ */
+
+
+/* END */