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      1 /*
      2  * Copyright 2012 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkOTUtils_DEFINED
      9 #define SkOTUtils_DEFINED
     10 
     11 #include "SkOTTableTypes.h"
     12 class SkData;
     13 class SkStream;
     14 
     15 struct SkOTUtils {
     16     /**
     17       *  Calculates the OpenType checksum for data.
     18       */
     19     static uint32_t CalcTableChecksum(SK_OT_ULONG *data, size_t length);
     20 
     21     /**
     22       *  Renames an sfnt font. On failure (invalid data or not an sfnt font)
     23       *  returns NULL.
     24       *
     25       *  Essentially, this removes any existing 'name' table and replaces it
     26       *  with a new one in which FontFamilyName, FontSubfamilyName,
     27       *  UniqueFontIdentifier, FullFontName, and PostscriptName are fontName.
     28       *
     29       *  The new 'name' table records will be written with the Windows,
     30       *  UnicodeBMPUCS2, and English_UnitedStates settings.
     31       *
     32       *  fontName and fontNameLen must be specified in terms of ASCII chars.
     33       */
     34     static SkData* RenameFont(SkStream* fontData, const char* fontName, int fontNameLen);
     35 };
     36 
     37 #endif
     38