Fix Undefined-shift in CPDF_SampledFunc::v_Init().

core/fpdfapi/fpdf_page/pageint.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 #define CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 
 #include <map>
@@ skipping 349 matching lines @@
   CPDF_FontFileMap m_FontFileMap;
   CPDF_FontMap m_FontMap;
   CPDF_IccProfileMap m_IccProfileMap;
   CPDF_ImageMap m_ImageMap;
   CPDF_PatternMap m_PatternMap;
 };
 
 class CPDF_Function {
  public:
   enum class Type {
-    kType0Sampled,
-    kType2ExpotentialInterpolation,
-    kType3Stitching,
-    kType4PostScript,
+    kTypeInvalid = -1,
+    kType0Sampled = 0,
+    kType2ExpotentialInterpolation = 2,
+    kType3Stitching = 3,
+    kType4PostScript = 4,
   };
 
   static CPDF_Function* Load(CPDF_Object* pFuncObj);
+  static Type IntegerToFunctionType(int iType);
+
   virtual ~CPDF_Function();
   FX_BOOL Call(FX_FLOAT* inputs,
                uint32_t ninputs,
                FX_FLOAT* results,
                int& nresults) const;
   uint32_t CountInputs() const { return m_nInputs; }
   uint32_t CountOutputs() const { return m_nOutputs; }
-  FX_FLOAT GetDomain(int i) const { return m_pDomains[i]; }
-  FX_FLOAT GetRange(int i) const { return m_pRanges[i]; }
-  Type GetType() const { return m_Type; }
 
  protected:
-  CPDF_Function(Type type);
+  CPDF_Function();
+
   FX_BOOL Init(CPDF_Object* pObj);
   virtual FX_BOOL v_Init(CPDF_Object* pObj) = 0;
   virtual FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const = 0;
 
   uint32_t m_nInputs;
   uint32_t m_nOutputs;
   FX_FLOAT* m_pDomains;
   FX_FLOAT* m_pRanges;
-  Type m_Type;
 };
 
 class CPDF_ExpIntFunc : public CPDF_Function {
  public:
   CPDF_ExpIntFunc();
   ~CPDF_ExpIntFunc() override;
 
   // CPDF_Function
   FX_BOOL v_Init(CPDF_Object* pObj) override;
   FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
@@ skipping 17 matching lines @@
     FX_FLOAT decode_min;
   };
 
   CPDF_SampledFunc();
   ~CPDF_SampledFunc() override;
 
   // CPDF_Function
   FX_BOOL v_Init(CPDF_Object* pObj) override;
   FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
 
-  SampleEncodeInfo* m_pEncodeInfo;
-  SampleDecodeInfo* m_pDecodeInfo;
+ private:
+  std::vector<SampleEncodeInfo> m_pEncodeInfo;
+  std::vector<SampleDecodeInfo> m_pDecodeInfo;
   uint32_t m_nBitsPerSample;
   uint32_t m_SampleMax;
-  CPDF_StreamAcc* m_pSampleStream;
+  std::unique_ptr<CPDF_StreamAcc> m_pSampleStream;
 };
 
 class CPDF_StitchFunc : public CPDF_Function {
  public:
   CPDF_StitchFunc();
   ~CPDF_StitchFunc() override;
 
   // CPDF_Function
   FX_BOOL v_Init(CPDF_Object* pObj) override;
   FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
 
-  std::vector<CPDF_Function*> m_pSubFunctions;
+  std::vector<std::unique_ptr<CPDF_Function>> m_pSubFunctions;
   FX_FLOAT* m_pBounds;
   FX_FLOAT* m_pEncode;
 
   static const uint32_t kRequiredNumInputs = 1;
 };
 
 class CPDF_IccProfile {
  public:
   CPDF_IccProfile(const uint8_t* pData, uint32_t dwSize);
   ~CPDF_IccProfile();
@@ skipping 60 matching lines @@
 };
 
 CFX_ByteStringC PDF_FindKeyAbbreviationForTesting(const CFX_ByteStringC& abbr);
 CFX_ByteStringC PDF_FindValueAbbreviationForTesting(
     const CFX_ByteStringC& abbr);
 
 void PDF_ReplaceAbbr(CPDF_Object* pObj);
 bool IsPathOperator(const uint8_t* buf, size_t len);
 
 #endif  // CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_