godot/thirdparty/freetype/src/truetype/ttpload.c

/****************************************************************************
 *
 * ttpload.c
 *
 *   TrueType-specific tables loader (body).
 *
 * Copyright (C) 1996-2023 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 <freetype/internal/ftdebug.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/internal/ftstream.h>
#include <freetype/tttags.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 …


  /**************************************************************************
   *
   * @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_LOCAL_DEF( FT_ULong )
  tt_face_get_location( FT_Face    face,   /* TT_Face */
                        FT_UInt    gindex,
                        FT_ULong  *asize )
  { … }


  FT_LOCAL_DEF( void )
  tt_face_done_loca( TT_Face  face )
  { … }



  /**************************************************************************
   *
   * @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 )
  { … }


  /**************************************************************************
   *
   * @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 )
  { … }


  /**************************************************************************
   *
   * @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 )
  { … }


  FT_COMPARE_DEF( int )
  compare_ppem( const void*  a,
                const void*  b )
  { … }


  /**************************************************************************
   *
   * @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_LOCAL_DEF( void )
  tt_face_free_hdmx( TT_Face  face )
  { … }


  /**************************************************************************
   *
   * Return the advance width table for a given pixel size if it is found
   * in the font's `hdmx' table (if any).  The records must be sorted for
   * the binary search to work properly.
   */
  FT_LOCAL_DEF( FT_Byte* )
  tt_face_get_device_metrics( TT_Face  face,
                              FT_UInt  ppem,
                              FT_UInt  gindex )
  { … }


/* END */