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// Copyright 2016 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_INCLUDE_FPDFAPI_CPDF_STREAM_H_
#define CORE_INCLUDE_FPDFAPI_CPDF_STREAM_H_
#include "core/include/fpdfapi/cpdf_object.h"
#include "core/include/fxcrt/fx_stream.h"
class CPDF_Stream : public CPDF_Object {
public:
CPDF_Stream(uint8_t* pData, FX_DWORD size, CPDF_Dictionary* pDict);
// CPDF_Object.
Type GetType() const override;
CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override;
CPDF_Dictionary* GetDict() const override;
CFX_WideString GetUnicodeText() const override;
bool IsStream() const override;
CPDF_Stream* AsStream() override;
const CPDF_Stream* AsStream() const override;
FX_DWORD GetRawSize() const { return m_dwSize; }
uint8_t* GetRawData() const { return m_pDataBuf; }
void SetData(const uint8_t* pData,
FX_DWORD size,
FX_BOOL bCompressed,
FX_BOOL bKeepBuf);
void InitStream(uint8_t* pData, FX_DWORD size, CPDF_Dictionary* pDict);
void InitStreamFromFile(IFX_FileRead* pFile, CPDF_Dictionary* pDict);
FX_BOOL ReadRawData(FX_FILESIZE start_pos,
uint8_t* pBuf,
FX_DWORD buf_size) const;
bool IsMemoryBased() const { return m_GenNum == kMemoryBasedGenNum; }
protected:
static const FX_DWORD kMemoryBasedGenNum = (FX_DWORD)-1;
~CPDF_Stream() override;
void InitStreamInternal(CPDF_Dictionary* pDict);
CPDF_Dictionary* m_pDict;
FX_DWORD m_dwSize;
FX_DWORD m_GenNum;
union {
uint8_t* m_pDataBuf;
IFX_FileRead* m_pFile;
};
};
inline CPDF_Stream* ToStream(CPDF_Object* obj) {
return obj ? obj->AsStream() : nullptr;
}
inline const CPDF_Stream* ToStream(const CPDF_Object* obj) {
return obj ? obj->AsStream() : nullptr;
}
class CPDF_StreamAcc {
public:
CPDF_StreamAcc();
~CPDF_StreamAcc();
void LoadAllData(const CPDF_Stream* pStream,
FX_BOOL bRawAccess = FALSE,
FX_DWORD estimated_size = 0,
FX_BOOL bImageAcc = FALSE);
const CPDF_Stream* GetStream() const { return m_pStream; }
CPDF_Dictionary* GetDict() const {
return m_pStream ? m_pStream->GetDict() : nullptr;
}
const uint8_t* GetData() const;
FX_DWORD GetSize() const;
const CFX_ByteString& GetImageDecoder() const { return m_ImageDecoder; }
const CPDF_Dictionary* GetImageParam() const { return m_pImageParam; }
uint8_t* DetachData();
protected:
uint8_t* m_pData;
FX_DWORD m_dwSize;
FX_BOOL m_bNewBuf;
CFX_ByteString m_ImageDecoder;
CPDF_Dictionary* m_pImageParam;
const CPDF_Stream* m_pStream;
uint8_t* m_pSrcData;
};
#endif // CORE_INCLUDE_FPDFAPI_CPDF_STREAM_H_
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