remove Microsoft SDK
[pdfium.git] / core / src / fpdfapi / fpdf_page / fpdf_page_doc.cpp
index d4e5bef..a9d2c4d 100644 (file)
-// Copyright 2014 PDFium Authors. All rights reserved.\r
-// Use of this source code is governed by a BSD-style license that can be\r
-// found in the LICENSE file.\r
\r
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com\r
-\r
-#include "../../../include/fpdfapi/fpdf_page.h"\r
-#include "../../../include/fpdfapi/fpdf_module.h"\r
-#include "../../../include/fdrm/fx_crypt.h"\r
-#include "../fpdf_font/font_int.h"\r
-#include "pageint.h"\r
-class CPDF_PageModule : public CPDF_PageModuleDef\r
-{\r
-public:\r
-    CPDF_PageModule() : m_StockGrayCS(PDFCS_DEVICEGRAY), m_StockRGBCS(PDFCS_DEVICERGB),\r
-        m_StockCMYKCS(PDFCS_DEVICECMYK) {}\r
-    virtual ~CPDF_PageModule() {}\r
-    virtual FX_BOOL            Installed()\r
-    {\r
-        return TRUE;\r
-    }\r
-    virtual CPDF_DocPageData*  CreateDocData(CPDF_Document* pDoc)\r
-    {\r
-        return FX_NEW CPDF_DocPageData(pDoc);\r
-    }\r
-    virtual void               ReleaseDoc(CPDF_Document* pDoc);\r
-    virtual void               ClearDoc(CPDF_Document* pDoc);\r
-    virtual CPDF_FontGlobals*  GetFontGlobals()\r
-    {\r
-        return &m_FontGlobals;\r
-    }\r
-    virtual void                               ClearStockFont(CPDF_Document* pDoc)\r
-    {\r
-        m_FontGlobals.Clear(pDoc);\r
-    }\r
-    virtual CPDF_ColorSpace*   GetStockCS(int family);\r
-    virtual void               NotifyCJKAvailable();\r
-    CPDF_FontGlobals   m_FontGlobals;\r
-    CPDF_DeviceCS              m_StockGrayCS;\r
-    CPDF_DeviceCS              m_StockRGBCS;\r
-    CPDF_DeviceCS              m_StockCMYKCS;\r
-    CPDF_PatternCS             m_StockPatternCS;\r
-};\r
-CPDF_ColorSpace* CPDF_PageModule::GetStockCS(int family)\r
-{\r
-    if (family == PDFCS_DEVICEGRAY) {\r
-        return &m_StockGrayCS;\r
-    }\r
-    if (family == PDFCS_DEVICERGB) {\r
-        return &m_StockRGBCS;\r
-    }\r
-    if (family == PDFCS_DEVICECMYK) {\r
-        return &m_StockCMYKCS;\r
-    }\r
-    if (family == PDFCS_PATTERN) {\r
-        return &m_StockPatternCS;\r
-    }\r
-    return NULL;\r
-}\r
-void CPDF_ModuleMgr::InitPageModule()\r
-{\r
-    if (m_pPageModule) {\r
-        delete m_pPageModule;\r
-    }\r
-    CPDF_PageModule* pPageModule = FX_NEW CPDF_PageModule;\r
-    m_pPageModule = pPageModule;\r
-}\r
-void CPDF_PageModule::ReleaseDoc(CPDF_Document* pDoc)\r
-{\r
-    delete pDoc->GetPageData();\r
-}\r
-void CPDF_PageModule::ClearDoc(CPDF_Document* pDoc)\r
-{\r
-    pDoc->GetPageData()->Clear(FALSE);\r
-}\r
-void CPDF_PageModule::NotifyCJKAvailable()\r
-{\r
-    m_FontGlobals.m_CMapManager.ReloadAll();\r
-}\r
-CPDF_Font* CPDF_Document::LoadFont(CPDF_Dictionary* pFontDict)\r
-{\r
-    if (!pFontDict) {\r
-        return NULL;\r
-    }\r
-    return GetValidatePageData()->GetFont(pFontDict, FALSE);\r
-}\r
-CPDF_Font* CPDF_Document::FindFont(CPDF_Dictionary* pFontDict)\r
-{\r
-    if (!pFontDict) {\r
-        return NULL;\r
-    }\r
-    return GetValidatePageData()->GetFont(pFontDict, TRUE);\r
-}\r
-CPDF_StreamAcc* CPDF_Document::LoadFontFile(CPDF_Stream* pStream)\r
-{\r
-    if (pStream == NULL) {\r
-        return NULL;\r
-    }\r
-    return GetValidatePageData()->GetFontFileStreamAcc(pStream);\r
-}\r
-CPDF_ColorSpace* _CSFromName(const CFX_ByteString& name);\r
-CPDF_ColorSpace* CPDF_Document::LoadColorSpace(CPDF_Object* pCSObj, CPDF_Dictionary* pResources)\r
-{\r
-    return GetValidatePageData()->GetColorSpace(pCSObj, pResources);\r
-}\r
-CPDF_Pattern* CPDF_Document::LoadPattern(CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* matrix)\r
-{\r
-    return GetValidatePageData()->GetPattern(pPatternObj, bShading, matrix);\r
-}\r
-CPDF_IccProfile* CPDF_Document::LoadIccProfile(CPDF_Stream* pStream, int nComponents)\r
-{\r
-    return GetValidatePageData()->GetIccProfile(pStream, nComponents);\r
-}\r
-CPDF_Image* CPDF_Document::LoadImageF(CPDF_Object* pObj)\r
-{\r
-    if (!pObj) {\r
-        return NULL;\r
-    }\r
-    FXSYS_assert(pObj->GetObjNum());\r
-    return GetValidatePageData()->GetImage(pObj);\r
-}\r
-void CPDF_Document::RemoveColorSpaceFromPageData(CPDF_Object* pCSObj)\r
-{\r
-    if (!pCSObj) {\r
-        return;\r
-    }\r
-    GetPageData()->ReleaseColorSpace(pCSObj);\r
-}\r
-CPDF_DocPageData::CPDF_DocPageData(CPDF_Document *pPDFDoc)\r
-    : m_pPDFDoc(pPDFDoc)\r
-    , m_FontMap()\r
-    , m_ColorSpaceMap()\r
-    , m_PatternMap()\r
-    , m_ImageMap()\r
-    , m_IccProfileMap()\r
-    , m_FontFileMap()\r
-{\r
-    m_FontMap.InitHashTable(64);\r
-    m_ColorSpaceMap.InitHashTable(32);\r
-    m_PatternMap.InitHashTable(16);\r
-    m_ImageMap.InitHashTable(64);\r
-    m_IccProfileMap.InitHashTable(16);\r
-    m_FontFileMap.InitHashTable(32);\r
-}\r
-CPDF_DocPageData::~CPDF_DocPageData()\r
-{\r
-    Clear(FALSE);\r
-    Clear(TRUE);\r
-    FX_POSITION pos = NULL;\r
-}\r
-void CPDF_DocPageData::Clear(FX_BOOL bRelease)\r
-{\r
-    FX_POSITION pos;\r
-    FX_DWORD   nCount;\r
-    {\r
-        pos = m_PatternMap.GetStartPosition();\r
-        while (pos) {\r
-            CPDF_Object* ptObj;\r
-            CPDF_CountedObject<CPDF_Pattern*>* ptData;\r
-            m_PatternMap.GetNextAssoc(pos, ptObj, ptData);\r
-            nCount = ptData->m_nCount;\r
-            if (bRelease || nCount < 2) {\r
-                delete ptData->m_Obj;\r
-                ptData->m_Obj = NULL;\r
-            }\r
-        }\r
-    }\r
-    {\r
-        pos = m_FontMap.GetStartPosition();\r
-        while (pos) {\r
-            CPDF_Dictionary* fontDict;\r
-            CPDF_CountedObject<CPDF_Font*>* fontData;\r
-            m_FontMap.GetNextAssoc(pos, fontDict, fontData);\r
-            nCount = fontData->m_nCount;\r
-            if (bRelease || nCount < 2) {\r
-                delete fontData->m_Obj;\r
-                fontData->m_Obj = NULL;\r
-            }\r
-        }\r
-    }\r
-    {\r
-        pos = m_ImageMap.GetStartPosition();\r
-        while (pos) {\r
-            FX_DWORD objNum;\r
-            CPDF_CountedObject<CPDF_Image*>* imageData;\r
-            m_ImageMap.GetNextAssoc(pos, objNum, imageData);\r
-            nCount = imageData->m_nCount;\r
-            if (bRelease || nCount < 2) {\r
-                delete imageData->m_Obj;\r
-                delete imageData;\r
-                m_ImageMap.RemoveKey(objNum);\r
-            }\r
-        }\r
-    }\r
-    {\r
-        pos = m_ColorSpaceMap.GetStartPosition();\r
-        while (pos) {\r
-            CPDF_Object* csKey;\r
-            CPDF_CountedObject<CPDF_ColorSpace*>* csData;\r
-            m_ColorSpaceMap.GetNextAssoc(pos, csKey, csData);\r
-            nCount = csData->m_nCount;\r
-            if (bRelease || nCount < 2) {\r
-                csData->m_Obj->ReleaseCS();\r
-                csData->m_Obj = NULL;\r
-            }\r
-        }\r
-    }\r
-    {\r
-        pos = m_IccProfileMap.GetStartPosition();\r
-        while (pos) {\r
-            CPDF_Stream* ipKey;\r
-            CPDF_CountedObject<CPDF_IccProfile*>* ipData;\r
-            m_IccProfileMap.GetNextAssoc(pos, ipKey, ipData);\r
-            nCount = ipData->m_nCount;\r
-            if (bRelease || nCount < 2) {\r
-                FX_POSITION pos2 = m_HashProfileMap.GetStartPosition();\r
-                while (pos2) {\r
-                    CFX_ByteString bsKey;\r
-                    CPDF_Stream* pFindStream = NULL;\r
-                    m_HashProfileMap.GetNextAssoc(pos2, bsKey, (void*&)pFindStream);\r
-                    if (ipKey == pFindStream) {\r
-                        m_HashProfileMap.RemoveKey(bsKey);\r
-                        break;\r
-                    }\r
-                }\r
-                delete ipData->m_Obj;\r
-                delete ipData;\r
-                m_IccProfileMap.RemoveKey(ipKey);\r
-            }\r
-        }\r
-    }\r
-    {\r
-        pos = m_FontFileMap.GetStartPosition();\r
-        while (pos) {\r
-            CPDF_Stream* ftKey;\r
-            CPDF_CountedObject<CPDF_StreamAcc*>* ftData;\r
-            m_FontFileMap.GetNextAssoc(pos, ftKey, ftData);\r
-            nCount = ftData->m_nCount;\r
-            if (bRelease || nCount < 2) {\r
-                delete ftData->m_Obj;\r
-                delete ftData;\r
-                m_FontFileMap.RemoveKey(ftKey);\r
-            }\r
-        }\r
-    }\r
-}\r
-CPDF_Font* CPDF_DocPageData::GetFont(CPDF_Dictionary* pFontDict, FX_BOOL findOnly)\r
-{\r
-    if (!pFontDict) {\r
-        return NULL;\r
-    }\r
-    if (findOnly) {\r
-        CPDF_CountedObject<CPDF_Font*>* fontData;\r
-        if (m_FontMap.Lookup(pFontDict, fontData)) {\r
-            if (!fontData->m_Obj) {\r
-                return NULL;\r
-            }\r
-            fontData->m_nCount ++;\r
-            return fontData->m_Obj;\r
-        }\r
-        return NULL;\r
-    }\r
-    CPDF_CountedObject<CPDF_Font*>* fontData = NULL;\r
-    if (m_FontMap.Lookup(pFontDict, fontData)) {\r
-        if (fontData->m_Obj) {\r
-            fontData->m_nCount ++;\r
-            return fontData->m_Obj;\r
-        }\r
-    }\r
-    FX_BOOL bNew = FALSE;\r
-    if (!fontData) {\r
-        fontData = FX_NEW CPDF_CountedObject<CPDF_Font*>;\r
-        bNew = TRUE;\r
-        if (!fontData) {\r
-            return NULL;\r
-        }\r
-    }\r
-    CPDF_Font* pFont = CPDF_Font::CreateFontF(m_pPDFDoc, pFontDict);\r
-    if (!pFont) {\r
-        if (bNew) {\r
-            delete fontData;\r
-        }\r
-        return NULL;\r
-    }\r
-    fontData->m_nCount = 2;\r
-    fontData->m_Obj = pFont;\r
-    m_FontMap.SetAt(pFontDict, fontData);\r
-    return pFont;\r
-}\r
-CPDF_Font* CPDF_DocPageData::GetStandardFont(FX_BSTR fontName, CPDF_FontEncoding* pEncoding)\r
-{\r
-    if (fontName.IsEmpty()) {\r
-        return NULL;\r
-    }\r
-    FX_POSITION pos = m_FontMap.GetStartPosition();\r
-    while (pos) {\r
-        CPDF_Dictionary* fontDict;\r
-        CPDF_CountedObject<CPDF_Font*>* fontData;\r
-        m_FontMap.GetNextAssoc(pos, fontDict, fontData);\r
-        CPDF_Font* pFont = fontData->m_Obj;\r
-        if (!pFont) {\r
-            continue;\r
-        }\r
-        if (pFont->GetBaseFont() != fontName) {\r
-            continue;\r
-        }\r
-        if (pFont->IsEmbedded()) {\r
-            continue;\r
-        }\r
-        if (pFont->GetFontType() != PDFFONT_TYPE1) {\r
-            continue;\r
-        }\r
-        if (pFont->GetFontDict()->KeyExist(FX_BSTRC("Widths"))) {\r
-            continue;\r
-        }\r
-        CPDF_Type1Font* pT1Font = pFont->GetType1Font();\r
-        if (pEncoding && !pT1Font->GetEncoding()->IsIdentical(pEncoding)) {\r
-            continue;\r
-        }\r
-        fontData->m_nCount ++;\r
-        return pFont;\r
-    }\r
-    CPDF_Dictionary* pDict = FX_NEW CPDF_Dictionary;\r
-    pDict->SetAtName(FX_BSTRC("Type"), FX_BSTRC("Font"));\r
-    pDict->SetAtName(FX_BSTRC("Subtype"), FX_BSTRC("Type1"));\r
-    pDict->SetAtName(FX_BSTRC("BaseFont"), fontName);\r
-    if (pEncoding) {\r
-        pDict->SetAt(FX_BSTRC("Encoding"), pEncoding->Realize());\r
-    }\r
-    m_pPDFDoc->AddIndirectObject(pDict);\r
-    CPDF_CountedObject<CPDF_Font*>* fontData = FX_NEW CPDF_CountedObject<CPDF_Font*>;\r
-    if (!fontData) {\r
-        return NULL;\r
-    }\r
-    CPDF_Font* pFont = CPDF_Font::CreateFontF(m_pPDFDoc, pDict);\r
-    if (!pFont) {\r
-        delete fontData;\r
-        return NULL;\r
-    }\r
-    fontData->m_nCount = 2;\r
-    fontData->m_Obj = pFont;\r
-    m_FontMap.SetAt(pDict, fontData);\r
-    return pFont;\r
-}\r
-void CPDF_DocPageData::ReleaseFont(CPDF_Dictionary* pFontDict)\r
-{\r
-    if (!pFontDict) {\r
-        return;\r
-    }\r
-    CPDF_CountedObject<CPDF_Font*>* fontData;\r
-    if (!m_FontMap.Lookup(pFontDict, fontData)) {\r
-        return;\r
-    }\r
-    if (fontData->m_Obj && --fontData->m_nCount == 0) {\r
-        delete fontData->m_Obj;\r
-        fontData->m_Obj = NULL;\r
-    }\r
-}\r
-CPDF_ColorSpace* CPDF_DocPageData::GetColorSpace(CPDF_Object* pCSObj, CPDF_Dictionary* pResources)\r
-{\r
-    if (!pCSObj) {\r
-        return NULL;\r
-    }\r
-    if (pCSObj->GetType() == PDFOBJ_NAME) {\r
-        CFX_ByteString name = pCSObj->GetConstString();\r
-        CPDF_ColorSpace* pCS = _CSFromName(name);\r
-        if (!pCS && pResources) {\r
-            CPDF_Dictionary* pList = pResources->GetDict(FX_BSTRC("ColorSpace"));\r
-            if (pList) {\r
-                pCSObj = pList->GetElementValue(name);\r
-                return GetColorSpace(pCSObj, NULL);\r
-            }\r
-        }\r
-        if (pCS == NULL || pResources == NULL) {\r
-            return pCS;\r
-        }\r
-        CPDF_Dictionary* pColorSpaces = pResources->GetDict(FX_BSTRC("ColorSpace"));\r
-        if (pColorSpaces == NULL) {\r
-            return pCS;\r
-        }\r
-        CPDF_Object* pDefaultCS = NULL;\r
-        switch (pCS->GetFamily()) {\r
-            case PDFCS_DEVICERGB:\r
-                pDefaultCS = pColorSpaces->GetElementValue(FX_BSTRC("DefaultRGB"));\r
-                break;\r
-            case PDFCS_DEVICEGRAY:\r
-                pDefaultCS = pColorSpaces->GetElementValue(FX_BSTRC("DefaultGray"));\r
-                break;\r
-            case PDFCS_DEVICECMYK:\r
-                pDefaultCS = pColorSpaces->GetElementValue(FX_BSTRC("DefaultCMYK"));\r
-                break;\r
-        }\r
-        if (pDefaultCS == NULL) {\r
-            return pCS;\r
-        }\r
-        return GetColorSpace(pDefaultCS, NULL);\r
-    }\r
-    if (pCSObj->GetType() != PDFOBJ_ARRAY) {\r
-        return NULL;\r
-    }\r
-    CPDF_Array* pArray = (CPDF_Array*)pCSObj;\r
-    if (pArray->GetCount() == 0) {\r
-        return NULL;\r
-    }\r
-    if (pArray->GetCount() == 1) {\r
-        return GetColorSpace(pArray->GetElementValue(0), pResources);\r
-    }\r
-    CPDF_CountedObject<CPDF_ColorSpace*>* csData = NULL;\r
-    if (m_ColorSpaceMap.Lookup(pCSObj, csData)) {\r
-        if (csData->m_Obj) {\r
-            csData->m_nCount++;\r
-            return csData->m_Obj;\r
-        }\r
-    }\r
-    FX_BOOL bNew = FALSE;\r
-    if (!csData) {\r
-        csData = FX_NEW CPDF_CountedObject<CPDF_ColorSpace*>;\r
-        if (!csData) {\r
-            return NULL;\r
-        }\r
-        bNew = TRUE;\r
-    }\r
-    CPDF_ColorSpace* pCS = CPDF_ColorSpace::Load(m_pPDFDoc, pArray);\r
-    if (!pCS) {\r
-        if (bNew) {\r
-            delete csData;\r
-        }\r
-        return NULL;\r
-    }\r
-    csData->m_nCount = 2;\r
-    csData->m_Obj = pCS;\r
-    m_ColorSpaceMap.SetAt(pCSObj, csData);\r
-    return pCS;\r
-}\r
-CPDF_ColorSpace* CPDF_DocPageData::GetCopiedColorSpace(CPDF_Object* pCSObj)\r
-{\r
-    if (!pCSObj) {\r
-        return NULL;\r
-    }\r
-    CPDF_CountedObject<CPDF_ColorSpace*>* csData;\r
-    if (!m_ColorSpaceMap.Lookup(pCSObj, csData)) {\r
-        return NULL;\r
-    }\r
-    if (!csData->m_Obj) {\r
-        return NULL;\r
-    }\r
-    csData->m_nCount ++;\r
-    return csData->m_Obj;\r
-}\r
-void CPDF_DocPageData::ReleaseColorSpace(CPDF_Object* pColorSpace)\r
-{\r
-    if (!pColorSpace) {\r
-        return;\r
-    }\r
-    CPDF_CountedObject<CPDF_ColorSpace*>* csData;\r
-    if (!m_ColorSpaceMap.Lookup(pColorSpace, csData)) {\r
-        return;\r
-    }\r
-    if (csData->m_Obj && --csData->m_nCount == 0) {\r
-        csData->m_Obj->ReleaseCS();\r
-        csData->m_Obj = NULL;\r
-    }\r
-}\r
-CPDF_Pattern* CPDF_DocPageData::GetPattern(CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* matrix)\r
-{\r
-    if (!pPatternObj) {\r
-        return NULL;\r
-    }\r
-    CPDF_CountedObject<CPDF_Pattern*>* ptData = NULL;\r
-    if (m_PatternMap.Lookup(pPatternObj, ptData)) {\r
-        if (ptData->m_Obj) {\r
-            ptData->m_nCount++;\r
-            return ptData->m_Obj;\r
-        }\r
-    }\r
-    FX_BOOL bNew = FALSE;\r
-    if (!ptData) {\r
-        ptData = FX_NEW CPDF_CountedObject<CPDF_Pattern*>;\r
-        bNew = TRUE;\r
-        if (!ptData) {\r
-            return NULL;\r
-        }\r
-    }\r
-    CPDF_Pattern* pPattern = NULL;\r
-    if (bShading) {\r
-        pPattern = FX_NEW CPDF_ShadingPattern(m_pPDFDoc, pPatternObj, bShading, matrix);\r
-    } else {\r
-        CPDF_Dictionary* pDict = pPatternObj->GetDict();\r
-        if (pDict) {\r
-            int type = pDict->GetInteger(FX_BSTRC("PatternType"));\r
-            if (type == 1) {\r
-                pPattern = FX_NEW CPDF_TilingPattern(m_pPDFDoc, pPatternObj, matrix);\r
-            } else if (type == 2) {\r
-                pPattern = FX_NEW CPDF_ShadingPattern(m_pPDFDoc, pPatternObj, FALSE, matrix);\r
-            }\r
-        }\r
-    }\r
-    if (!pPattern) {\r
-        if (bNew) {\r
-            delete ptData;\r
-        }\r
-        return NULL;\r
-    }\r
-    ptData->m_nCount = 2;\r
-    ptData->m_Obj = pPattern;\r
-    m_PatternMap.SetAt(pPatternObj, ptData);\r
-    return pPattern;\r
-}\r
-void CPDF_DocPageData::ReleasePattern(CPDF_Object* pPatternObj)\r
-{\r
-    if (!pPatternObj) {\r
-        return;\r
-    }\r
-    CPDF_CountedObject<CPDF_Pattern*>* ptData;\r
-    if (!m_PatternMap.Lookup(pPatternObj, ptData)) {\r
-        return;\r
-    }\r
-    if (ptData->m_Obj && --ptData->m_nCount == 0) {\r
-        delete ptData->m_Obj;\r
-        ptData->m_Obj = NULL;\r
-    }\r
-}\r
-CPDF_Image* CPDF_DocPageData::GetImage(CPDF_Object* pImageStream)\r
-{\r
-    if (!pImageStream) {\r
-        return NULL;\r
-    }\r
-    FX_DWORD dwImageObjNum = pImageStream->GetObjNum();\r
-    CPDF_CountedObject<CPDF_Image*>* imageData;\r
-    if (m_ImageMap.Lookup(dwImageObjNum, imageData)) {\r
-        imageData->m_nCount ++;\r
-        return imageData->m_Obj;\r
-    }\r
-    imageData = FX_NEW CPDF_CountedObject<CPDF_Image*>;\r
-    if (!imageData) {\r
-        return NULL;\r
-    }\r
-    CPDF_Image* pImage = FX_NEW CPDF_Image(m_pPDFDoc);\r
-    if (!pImage) {\r
-        delete imageData;\r
-        return NULL;\r
-    }\r
-    pImage->LoadImageF((CPDF_Stream*)pImageStream, FALSE);\r
-    imageData->m_nCount = 2;\r
-    imageData->m_Obj = pImage;\r
-    m_ImageMap.SetAt(dwImageObjNum, imageData);\r
-    return pImage;\r
-}\r
-void CPDF_DocPageData::ReleaseImage(CPDF_Object* pImageStream)\r
-{\r
-    if (!pImageStream) {\r
-        return;\r
-    }\r
-    PDF_DocPageData_Release<FX_DWORD, CPDF_Image*>(m_ImageMap, pImageStream->GetObjNum(), NULL);\r
-}\r
-CPDF_IccProfile* CPDF_DocPageData::GetIccProfile(CPDF_Stream* pIccProfileStream, FX_INT32 nComponents)\r
-{\r
-    if (!pIccProfileStream) {\r
-        return NULL;\r
-    }\r
-    CPDF_CountedObject<CPDF_IccProfile*>* ipData = NULL;\r
-    if (m_IccProfileMap.Lookup(pIccProfileStream, ipData)) {\r
-        ipData->m_nCount++;\r
-        return ipData->m_Obj;\r
-    }\r
-    CPDF_StreamAcc stream;\r
-    stream.LoadAllData(pIccProfileStream, FALSE);\r
-    FX_BYTE digest[20];\r
-    CPDF_Stream* pCopiedStream = NULL;\r
-    CRYPT_SHA1Generate(stream.GetData(), stream.GetSize(), digest);\r
-    if (m_HashProfileMap.Lookup(CFX_ByteStringC(digest, 20), (void*&)pCopiedStream)) {\r
-        m_IccProfileMap.Lookup(pCopiedStream, ipData);\r
-        ipData->m_nCount++;\r
-        return ipData->m_Obj;\r
-    }\r
-    CPDF_IccProfile* pProfile = FX_NEW CPDF_IccProfile(stream.GetData(), stream.GetSize(), nComponents);\r
-    if (!pProfile) {\r
-        return NULL;\r
-    }\r
-    ipData = FX_NEW CPDF_CountedObject<CPDF_IccProfile*>;\r
-    if (!ipData) {\r
-        delete pProfile;\r
-        return NULL;\r
-    }\r
-    ipData->m_nCount = 2;\r
-    ipData->m_Obj = pProfile;\r
-    m_IccProfileMap.SetAt(pIccProfileStream, ipData);\r
-    m_HashProfileMap.SetAt(CFX_ByteStringC(digest, 20), pIccProfileStream);\r
-    return pProfile;\r
-}\r
-void CPDF_DocPageData::ReleaseIccProfile(CPDF_Stream* pIccProfileStream, CPDF_IccProfile* pIccProfile)\r
-{\r
-    if (!pIccProfileStream && !pIccProfile) {\r
-        return;\r
-    }\r
-    CPDF_CountedObject<CPDF_IccProfile*>* ipData = NULL;\r
-    if (m_IccProfileMap.Lookup(pIccProfileStream, ipData) && ipData->m_nCount < 2) {\r
-        FX_POSITION pos = m_HashProfileMap.GetStartPosition();\r
-        while (pos) {\r
-            CFX_ByteString key;\r
-            CPDF_Stream* pFindStream = NULL;\r
-            m_HashProfileMap.GetNextAssoc(pos, key, (void*&)pFindStream);\r
-            if (pIccProfileStream == pFindStream) {\r
-                m_HashProfileMap.RemoveKey(key);\r
-                break;\r
-            }\r
-        }\r
-    }\r
-    PDF_DocPageData_Release<CPDF_Stream*, CPDF_IccProfile*>(m_IccProfileMap, pIccProfileStream, pIccProfile);\r
-}\r
-CPDF_StreamAcc* CPDF_DocPageData::GetFontFileStreamAcc(CPDF_Stream* pFontStream)\r
-{\r
-    if (!pFontStream) {\r
-        return NULL;\r
-    }\r
-    CPDF_CountedObject<CPDF_StreamAcc*>* ftData;\r
-    if (m_FontFileMap.Lookup(pFontStream, ftData)) {\r
-        ftData->m_nCount ++;\r
-        return ftData->m_Obj;\r
-    }\r
-    ftData = FX_NEW CPDF_CountedObject<CPDF_StreamAcc*>;\r
-    if (!ftData) {\r
-        return NULL;\r
-    }\r
-    CPDF_StreamAcc* pFontFile = FX_NEW CPDF_StreamAcc;\r
-    if (!pFontFile) {\r
-        delete ftData;\r
-        return NULL;\r
-    }\r
-    CPDF_Dictionary* pFontDict = pFontStream->GetDict();\r
-    FX_INT32 org_size = pFontDict->GetInteger(FX_BSTRC("Length1")) + pFontDict->GetInteger(FX_BSTRC("Length2")) + pFontDict->GetInteger(FX_BSTRC("Length3"));\r
-    if (org_size < 0) {\r
-        org_size = 0;\r
-    }\r
-    pFontFile->LoadAllData(pFontStream, FALSE, org_size);\r
-    ftData->m_nCount = 2;\r
-    ftData->m_Obj = pFontFile;\r
-    m_FontFileMap.SetAt(pFontStream, ftData);\r
-    return pFontFile;\r
-}\r
-void CPDF_DocPageData::ReleaseFontFileStreamAcc(CPDF_Stream* pFontStream, FX_BOOL bForce)\r
-{\r
-    if (!pFontStream) {\r
-        return;\r
-    }\r
-    PDF_DocPageData_Release<CPDF_Stream*, CPDF_StreamAcc*>(m_FontFileMap, pFontStream, NULL, bForce);\r
-}\r
+// 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
+
+#include "../../../include/fpdfapi/fpdf_page.h"
+#include "../../../include/fpdfapi/fpdf_module.h"
+#include "../../../include/fdrm/fx_crypt.h"
+#include "../fpdf_font/font_int.h"
+#include "pageint.h"
+class CPDF_PageModule : public CPDF_PageModuleDef
+{
+public:
+    CPDF_PageModule() : m_StockGrayCS(PDFCS_DEVICEGRAY), m_StockRGBCS(PDFCS_DEVICERGB),
+        m_StockCMYKCS(PDFCS_DEVICECMYK) {}
+    virtual ~CPDF_PageModule() {}
+    virtual FX_BOOL            Installed()
+    {
+        return TRUE;
+    }
+    virtual CPDF_DocPageData*  CreateDocData(CPDF_Document* pDoc)
+    {
+        return FX_NEW CPDF_DocPageData(pDoc);
+    }
+    virtual void               ReleaseDoc(CPDF_Document* pDoc);
+    virtual void               ClearDoc(CPDF_Document* pDoc);
+    virtual CPDF_FontGlobals*  GetFontGlobals()
+    {
+        return &m_FontGlobals;
+    }
+    virtual void                               ClearStockFont(CPDF_Document* pDoc)
+    {
+        m_FontGlobals.Clear(pDoc);
+    }
+    virtual CPDF_ColorSpace*   GetStockCS(int family);
+    virtual void               NotifyCJKAvailable();
+    CPDF_FontGlobals   m_FontGlobals;
+    CPDF_DeviceCS              m_StockGrayCS;
+    CPDF_DeviceCS              m_StockRGBCS;
+    CPDF_DeviceCS              m_StockCMYKCS;
+    CPDF_PatternCS             m_StockPatternCS;
+};
+CPDF_ColorSpace* CPDF_PageModule::GetStockCS(int family)
+{
+    if (family == PDFCS_DEVICEGRAY) {
+        return &m_StockGrayCS;
+    }
+    if (family == PDFCS_DEVICERGB) {
+        return &m_StockRGBCS;
+    }
+    if (family == PDFCS_DEVICECMYK) {
+        return &m_StockCMYKCS;
+    }
+    if (family == PDFCS_PATTERN) {
+        return &m_StockPatternCS;
+    }
+    return NULL;
+}
+void CPDF_ModuleMgr::InitPageModule()
+{
+    if (m_pPageModule) {
+        delete m_pPageModule;
+    }
+    CPDF_PageModule* pPageModule = FX_NEW CPDF_PageModule;
+    m_pPageModule = pPageModule;
+}
+void CPDF_PageModule::ReleaseDoc(CPDF_Document* pDoc)
+{
+    delete pDoc->GetPageData();
+}
+void CPDF_PageModule::ClearDoc(CPDF_Document* pDoc)
+{
+    pDoc->GetPageData()->Clear(FALSE);
+}
+void CPDF_PageModule::NotifyCJKAvailable()
+{
+    m_FontGlobals.m_CMapManager.ReloadAll();
+}
+CPDF_Font* CPDF_Document::LoadFont(CPDF_Dictionary* pFontDict)
+{
+    if (!pFontDict) {
+        return NULL;
+    }
+    return GetValidatePageData()->GetFont(pFontDict, FALSE);
+}
+CPDF_Font* CPDF_Document::FindFont(CPDF_Dictionary* pFontDict)
+{
+    if (!pFontDict) {
+        return NULL;
+    }
+    return GetValidatePageData()->GetFont(pFontDict, TRUE);
+}
+CPDF_StreamAcc* CPDF_Document::LoadFontFile(CPDF_Stream* pStream)
+{
+    if (pStream == NULL) {
+        return NULL;
+    }
+    return GetValidatePageData()->GetFontFileStreamAcc(pStream);
+}
+CPDF_ColorSpace* _CSFromName(const CFX_ByteString& name);
+CPDF_ColorSpace* CPDF_Document::LoadColorSpace(CPDF_Object* pCSObj, CPDF_Dictionary* pResources)
+{
+    return GetValidatePageData()->GetColorSpace(pCSObj, pResources);
+}
+CPDF_Pattern* CPDF_Document::LoadPattern(CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* matrix)
+{
+    return GetValidatePageData()->GetPattern(pPatternObj, bShading, matrix);
+}
+CPDF_IccProfile* CPDF_Document::LoadIccProfile(CPDF_Stream* pStream, int nComponents)
+{
+    return GetValidatePageData()->GetIccProfile(pStream, nComponents);
+}
+CPDF_Image* CPDF_Document::LoadImageF(CPDF_Object* pObj)
+{
+    if (!pObj) {
+        return NULL;
+    }
+    FXSYS_assert(pObj->GetObjNum());
+    return GetValidatePageData()->GetImage(pObj);
+}
+void CPDF_Document::RemoveColorSpaceFromPageData(CPDF_Object* pCSObj)
+{
+    if (!pCSObj) {
+        return;
+    }
+    GetPageData()->ReleaseColorSpace(pCSObj);
+}
+CPDF_DocPageData::CPDF_DocPageData(CPDF_Document *pPDFDoc)
+    : m_pPDFDoc(pPDFDoc)
+    , m_FontMap()
+    , m_ColorSpaceMap()
+    , m_PatternMap()
+    , m_ImageMap()
+    , m_IccProfileMap()
+    , m_FontFileMap()
+{
+    m_FontMap.InitHashTable(64);
+    m_ColorSpaceMap.InitHashTable(32);
+    m_PatternMap.InitHashTable(16);
+    m_ImageMap.InitHashTable(64);
+    m_IccProfileMap.InitHashTable(16);
+    m_FontFileMap.InitHashTable(32);
+}
+CPDF_DocPageData::~CPDF_DocPageData()
+{
+    Clear(FALSE);
+    Clear(TRUE);
+    FX_POSITION pos = NULL;
+}
+void CPDF_DocPageData::Clear(FX_BOOL bRelease)
+{
+    FX_POSITION pos;
+    FX_DWORD   nCount;
+    {
+        pos = m_PatternMap.GetStartPosition();
+        while (pos) {
+            CPDF_Object* ptObj;
+            CPDF_CountedObject<CPDF_Pattern*>* ptData;
+            m_PatternMap.GetNextAssoc(pos, ptObj, ptData);
+            nCount = ptData->m_nCount;
+            if (bRelease || nCount < 2) {
+                delete ptData->m_Obj;
+                ptData->m_Obj = NULL;
+            }
+        }
+    }
+    {
+        pos = m_FontMap.GetStartPosition();
+        while (pos) {
+            CPDF_Dictionary* fontDict;
+            CPDF_CountedObject<CPDF_Font*>* fontData;
+            m_FontMap.GetNextAssoc(pos, fontDict, fontData);
+            nCount = fontData->m_nCount;
+            if (bRelease || nCount < 2) {
+                delete fontData->m_Obj;
+                fontData->m_Obj = NULL;
+            }
+        }
+    }
+    {
+        pos = m_ImageMap.GetStartPosition();
+        while (pos) {
+            FX_DWORD objNum;
+            CPDF_CountedObject<CPDF_Image*>* imageData;
+            m_ImageMap.GetNextAssoc(pos, objNum, imageData);
+            nCount = imageData->m_nCount;
+            if (bRelease || nCount < 2) {
+                delete imageData->m_Obj;
+                delete imageData;
+                m_ImageMap.RemoveKey(objNum);
+            }
+        }
+    }
+    {
+        pos = m_ColorSpaceMap.GetStartPosition();
+        while (pos) {
+            CPDF_Object* csKey;
+            CPDF_CountedObject<CPDF_ColorSpace*>* csData;
+            m_ColorSpaceMap.GetNextAssoc(pos, csKey, csData);
+            nCount = csData->m_nCount;
+            if (bRelease || nCount < 2) {
+                csData->m_Obj->ReleaseCS();
+                csData->m_Obj = NULL;
+            }
+        }
+    }
+    {
+        pos = m_IccProfileMap.GetStartPosition();
+        while (pos) {
+            CPDF_Stream* ipKey;
+            CPDF_CountedObject<CPDF_IccProfile*>* ipData;
+            m_IccProfileMap.GetNextAssoc(pos, ipKey, ipData);
+            nCount = ipData->m_nCount;
+            if (bRelease || nCount < 2) {
+                FX_POSITION pos2 = m_HashProfileMap.GetStartPosition();
+                while (pos2) {
+                    CFX_ByteString bsKey;
+                    CPDF_Stream* pFindStream = NULL;
+                    m_HashProfileMap.GetNextAssoc(pos2, bsKey, (void*&)pFindStream);
+                    if (ipKey == pFindStream) {
+                        m_HashProfileMap.RemoveKey(bsKey);
+                        break;
+                    }
+                }
+                delete ipData->m_Obj;
+                delete ipData;
+                m_IccProfileMap.RemoveKey(ipKey);
+            }
+        }
+    }
+    {
+        pos = m_FontFileMap.GetStartPosition();
+        while (pos) {
+            CPDF_Stream* ftKey;
+            CPDF_CountedObject<CPDF_StreamAcc*>* ftData;
+            m_FontFileMap.GetNextAssoc(pos, ftKey, ftData);
+            nCount = ftData->m_nCount;
+            if (bRelease || nCount < 2) {
+                delete ftData->m_Obj;
+                delete ftData;
+                m_FontFileMap.RemoveKey(ftKey);
+            }
+        }
+    }
+}
+CPDF_Font* CPDF_DocPageData::GetFont(CPDF_Dictionary* pFontDict, FX_BOOL findOnly)
+{
+    if (!pFontDict) {
+        return NULL;
+    }
+    if (findOnly) {
+        CPDF_CountedObject<CPDF_Font*>* fontData;
+        if (m_FontMap.Lookup(pFontDict, fontData)) {
+            if (!fontData->m_Obj) {
+                return NULL;
+            }
+            fontData->m_nCount ++;
+            return fontData->m_Obj;
+        }
+        return NULL;
+    }
+    CPDF_CountedObject<CPDF_Font*>* fontData = NULL;
+    if (m_FontMap.Lookup(pFontDict, fontData)) {
+        if (fontData->m_Obj) {
+            fontData->m_nCount ++;
+            return fontData->m_Obj;
+        }
+    }
+    FX_BOOL bNew = FALSE;
+    if (!fontData) {
+        fontData = FX_NEW CPDF_CountedObject<CPDF_Font*>;
+        bNew = TRUE;
+        if (!fontData) {
+            return NULL;
+        }
+    }
+    CPDF_Font* pFont = CPDF_Font::CreateFontF(m_pPDFDoc, pFontDict);
+    if (!pFont) {
+        if (bNew) {
+            delete fontData;
+        }
+        return NULL;
+    }
+    fontData->m_nCount = 2;
+    fontData->m_Obj = pFont;
+    m_FontMap.SetAt(pFontDict, fontData);
+    return pFont;
+}
+CPDF_Font* CPDF_DocPageData::GetStandardFont(FX_BSTR fontName, CPDF_FontEncoding* pEncoding)
+{
+    if (fontName.IsEmpty()) {
+        return NULL;
+    }
+    FX_POSITION pos = m_FontMap.GetStartPosition();
+    while (pos) {
+        CPDF_Dictionary* fontDict;
+        CPDF_CountedObject<CPDF_Font*>* fontData;
+        m_FontMap.GetNextAssoc(pos, fontDict, fontData);
+        CPDF_Font* pFont = fontData->m_Obj;
+        if (!pFont) {
+            continue;
+        }
+        if (pFont->GetBaseFont() != fontName) {
+            continue;
+        }
+        if (pFont->IsEmbedded()) {
+            continue;
+        }
+        if (pFont->GetFontType() != PDFFONT_TYPE1) {
+            continue;
+        }
+        if (pFont->GetFontDict()->KeyExist(FX_BSTRC("Widths"))) {
+            continue;
+        }
+        CPDF_Type1Font* pT1Font = pFont->GetType1Font();
+        if (pEncoding && !pT1Font->GetEncoding()->IsIdentical(pEncoding)) {
+            continue;
+        }
+        fontData->m_nCount ++;
+        return pFont;
+    }
+    CPDF_Dictionary* pDict = FX_NEW CPDF_Dictionary;
+    pDict->SetAtName(FX_BSTRC("Type"), FX_BSTRC("Font"));
+    pDict->SetAtName(FX_BSTRC("Subtype"), FX_BSTRC("Type1"));
+    pDict->SetAtName(FX_BSTRC("BaseFont"), fontName);
+    if (pEncoding) {
+        pDict->SetAt(FX_BSTRC("Encoding"), pEncoding->Realize());
+    }
+    m_pPDFDoc->AddIndirectObject(pDict);
+    CPDF_CountedObject<CPDF_Font*>* fontData = FX_NEW CPDF_CountedObject<CPDF_Font*>;
+    if (!fontData) {
+        return NULL;
+    }
+    CPDF_Font* pFont = CPDF_Font::CreateFontF(m_pPDFDoc, pDict);
+    if (!pFont) {
+        delete fontData;
+        return NULL;
+    }
+    fontData->m_nCount = 2;
+    fontData->m_Obj = pFont;
+    m_FontMap.SetAt(pDict, fontData);
+    return pFont;
+}
+void CPDF_DocPageData::ReleaseFont(CPDF_Dictionary* pFontDict)
+{
+    if (!pFontDict) {
+        return;
+    }
+    CPDF_CountedObject<CPDF_Font*>* fontData;
+    if (!m_FontMap.Lookup(pFontDict, fontData)) {
+        return;
+    }
+    if (fontData->m_Obj && --fontData->m_nCount == 0) {
+        delete fontData->m_Obj;
+        fontData->m_Obj = NULL;
+    }
+}
+CPDF_ColorSpace* CPDF_DocPageData::GetColorSpace(CPDF_Object* pCSObj, CPDF_Dictionary* pResources)
+{
+    if (!pCSObj) {
+        return NULL;
+    }
+    if (pCSObj->GetType() == PDFOBJ_NAME) {
+        CFX_ByteString name = pCSObj->GetConstString();
+        CPDF_ColorSpace* pCS = _CSFromName(name);
+        if (!pCS && pResources) {
+            CPDF_Dictionary* pList = pResources->GetDict(FX_BSTRC("ColorSpace"));
+            if (pList) {
+                pCSObj = pList->GetElementValue(name);
+                return GetColorSpace(pCSObj, NULL);
+            }
+        }
+        if (pCS == NULL || pResources == NULL) {
+            return pCS;
+        }
+        CPDF_Dictionary* pColorSpaces = pResources->GetDict(FX_BSTRC("ColorSpace"));
+        if (pColorSpaces == NULL) {
+            return pCS;
+        }
+        CPDF_Object* pDefaultCS = NULL;
+        switch (pCS->GetFamily()) {
+            case PDFCS_DEVICERGB:
+                pDefaultCS = pColorSpaces->GetElementValue(FX_BSTRC("DefaultRGB"));
+                break;
+            case PDFCS_DEVICEGRAY:
+                pDefaultCS = pColorSpaces->GetElementValue(FX_BSTRC("DefaultGray"));
+                break;
+            case PDFCS_DEVICECMYK:
+                pDefaultCS = pColorSpaces->GetElementValue(FX_BSTRC("DefaultCMYK"));
+                break;
+        }
+        if (pDefaultCS == NULL) {
+            return pCS;
+        }
+        return GetColorSpace(pDefaultCS, NULL);
+    }
+    if (pCSObj->GetType() != PDFOBJ_ARRAY) {
+        return NULL;
+    }
+    CPDF_Array* pArray = (CPDF_Array*)pCSObj;
+    if (pArray->GetCount() == 0) {
+        return NULL;
+    }
+    if (pArray->GetCount() == 1) {
+        return GetColorSpace(pArray->GetElementValue(0), pResources);
+    }
+    CPDF_CountedObject<CPDF_ColorSpace*>* csData = NULL;
+    if (m_ColorSpaceMap.Lookup(pCSObj, csData)) {
+        if (csData->m_Obj) {
+            csData->m_nCount++;
+            return csData->m_Obj;
+        }
+    }
+    FX_BOOL bNew = FALSE;
+    if (!csData) {
+        csData = FX_NEW CPDF_CountedObject<CPDF_ColorSpace*>;
+        if (!csData) {
+            return NULL;
+        }
+        bNew = TRUE;
+    }
+    CPDF_ColorSpace* pCS = CPDF_ColorSpace::Load(m_pPDFDoc, pArray);
+    if (!pCS) {
+        if (bNew) {
+            delete csData;
+        }
+        return NULL;
+    }
+    csData->m_nCount = 2;
+    csData->m_Obj = pCS;
+    m_ColorSpaceMap.SetAt(pCSObj, csData);
+    return pCS;
+}
+CPDF_ColorSpace* CPDF_DocPageData::GetCopiedColorSpace(CPDF_Object* pCSObj)
+{
+    if (!pCSObj) {
+        return NULL;
+    }
+    CPDF_CountedObject<CPDF_ColorSpace*>* csData;
+    if (!m_ColorSpaceMap.Lookup(pCSObj, csData)) {
+        return NULL;
+    }
+    if (!csData->m_Obj) {
+        return NULL;
+    }
+    csData->m_nCount ++;
+    return csData->m_Obj;
+}
+void CPDF_DocPageData::ReleaseColorSpace(CPDF_Object* pColorSpace)
+{
+    if (!pColorSpace) {
+        return;
+    }
+    CPDF_CountedObject<CPDF_ColorSpace*>* csData;
+    if (!m_ColorSpaceMap.Lookup(pColorSpace, csData)) {
+        return;
+    }
+    if (csData->m_Obj && --csData->m_nCount == 0) {
+        csData->m_Obj->ReleaseCS();
+        csData->m_Obj = NULL;
+    }
+}
+CPDF_Pattern* CPDF_DocPageData::GetPattern(CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* matrix)
+{
+    if (!pPatternObj) {
+        return NULL;
+    }
+    CPDF_CountedObject<CPDF_Pattern*>* ptData = NULL;
+    if (m_PatternMap.Lookup(pPatternObj, ptData)) {
+        if (ptData->m_Obj) {
+            ptData->m_nCount++;
+            return ptData->m_Obj;
+        }
+    }
+    FX_BOOL bNew = FALSE;
+    if (!ptData) {
+        ptData = FX_NEW CPDF_CountedObject<CPDF_Pattern*>;
+        bNew = TRUE;
+        if (!ptData) {
+            return NULL;
+        }
+    }
+    CPDF_Pattern* pPattern = NULL;
+    if (bShading) {
+        pPattern = FX_NEW CPDF_ShadingPattern(m_pPDFDoc, pPatternObj, bShading, matrix);
+    } else {
+        CPDF_Dictionary* pDict = pPatternObj->GetDict();
+        if (pDict) {
+            int type = pDict->GetInteger(FX_BSTRC("PatternType"));
+            if (type == 1) {
+                pPattern = FX_NEW CPDF_TilingPattern(m_pPDFDoc, pPatternObj, matrix);
+            } else if (type == 2) {
+                pPattern = FX_NEW CPDF_ShadingPattern(m_pPDFDoc, pPatternObj, FALSE, matrix);
+            }
+        }
+    }
+    if (!pPattern) {
+        if (bNew) {
+            delete ptData;
+        }
+        return NULL;
+    }
+    ptData->m_nCount = 2;
+    ptData->m_Obj = pPattern;
+    m_PatternMap.SetAt(pPatternObj, ptData);
+    return pPattern;
+}
+void CPDF_DocPageData::ReleasePattern(CPDF_Object* pPatternObj)
+{
+    if (!pPatternObj) {
+        return;
+    }
+    CPDF_CountedObject<CPDF_Pattern*>* ptData;
+    if (!m_PatternMap.Lookup(pPatternObj, ptData)) {
+        return;
+    }
+    if (ptData->m_Obj && --ptData->m_nCount == 0) {
+        delete ptData->m_Obj;
+        ptData->m_Obj = NULL;
+    }
+}
+CPDF_Image* CPDF_DocPageData::GetImage(CPDF_Object* pImageStream)
+{
+    if (!pImageStream) {
+        return NULL;
+    }
+    FX_DWORD dwImageObjNum = pImageStream->GetObjNum();
+    CPDF_CountedObject<CPDF_Image*>* imageData;
+    if (m_ImageMap.Lookup(dwImageObjNum, imageData)) {
+        imageData->m_nCount ++;
+        return imageData->m_Obj;
+    }
+    imageData = FX_NEW CPDF_CountedObject<CPDF_Image*>;
+    if (!imageData) {
+        return NULL;
+    }
+    CPDF_Image* pImage = FX_NEW CPDF_Image(m_pPDFDoc);
+    if (!pImage) {
+        delete imageData;
+        return NULL;
+    }
+    pImage->LoadImageF((CPDF_Stream*)pImageStream, FALSE);
+    imageData->m_nCount = 2;
+    imageData->m_Obj = pImage;
+    m_ImageMap.SetAt(dwImageObjNum, imageData);
+    return pImage;
+}
+void CPDF_DocPageData::ReleaseImage(CPDF_Object* pImageStream)
+{
+    if (!pImageStream) {
+        return;
+    }
+    PDF_DocPageData_Release<FX_DWORD, CPDF_Image*>(m_ImageMap, pImageStream->GetObjNum(), NULL);
+}
+CPDF_IccProfile* CPDF_DocPageData::GetIccProfile(CPDF_Stream* pIccProfileStream, FX_INT32 nComponents)
+{
+    if (!pIccProfileStream) {
+        return NULL;
+    }
+    CPDF_CountedObject<CPDF_IccProfile*>* ipData = NULL;
+    if (m_IccProfileMap.Lookup(pIccProfileStream, ipData)) {
+        ipData->m_nCount++;
+        return ipData->m_Obj;
+    }
+    CPDF_StreamAcc stream;
+    stream.LoadAllData(pIccProfileStream, FALSE);
+    FX_BYTE digest[20];
+    CPDF_Stream* pCopiedStream = NULL;
+    CRYPT_SHA1Generate(stream.GetData(), stream.GetSize(), digest);
+    if (m_HashProfileMap.Lookup(CFX_ByteStringC(digest, 20), (void*&)pCopiedStream)) {
+        m_IccProfileMap.Lookup(pCopiedStream, ipData);
+        ipData->m_nCount++;
+        return ipData->m_Obj;
+    }
+    CPDF_IccProfile* pProfile = FX_NEW CPDF_IccProfile(stream.GetData(), stream.GetSize(), nComponents);
+    if (!pProfile) {
+        return NULL;
+    }
+    ipData = FX_NEW CPDF_CountedObject<CPDF_IccProfile*>;
+    if (!ipData) {
+        delete pProfile;
+        return NULL;
+    }
+    ipData->m_nCount = 2;
+    ipData->m_Obj = pProfile;
+    m_IccProfileMap.SetAt(pIccProfileStream, ipData);
+    m_HashProfileMap.SetAt(CFX_ByteStringC(digest, 20), pIccProfileStream);
+    return pProfile;
+}
+void CPDF_DocPageData::ReleaseIccProfile(CPDF_Stream* pIccProfileStream, CPDF_IccProfile* pIccProfile)
+{
+    if (!pIccProfileStream && !pIccProfile) {
+        return;
+    }
+    CPDF_CountedObject<CPDF_IccProfile*>* ipData = NULL;
+    if (m_IccProfileMap.Lookup(pIccProfileStream, ipData) && ipData->m_nCount < 2) {
+        FX_POSITION pos = m_HashProfileMap.GetStartPosition();
+        while (pos) {
+            CFX_ByteString key;
+            CPDF_Stream* pFindStream = NULL;
+            m_HashProfileMap.GetNextAssoc(pos, key, (void*&)pFindStream);
+            if (pIccProfileStream == pFindStream) {
+                m_HashProfileMap.RemoveKey(key);
+                break;
+            }
+        }
+    }
+    PDF_DocPageData_Release<CPDF_Stream*, CPDF_IccProfile*>(m_IccProfileMap, pIccProfileStream, pIccProfile);
+}
+CPDF_StreamAcc* CPDF_DocPageData::GetFontFileStreamAcc(CPDF_Stream* pFontStream)
+{
+    if (!pFontStream) {
+        return NULL;
+    }
+    CPDF_CountedObject<CPDF_StreamAcc*>* ftData;
+    if (m_FontFileMap.Lookup(pFontStream, ftData)) {
+        ftData->m_nCount ++;
+        return ftData->m_Obj;
+    }
+    ftData = FX_NEW CPDF_CountedObject<CPDF_StreamAcc*>;
+    if (!ftData) {
+        return NULL;
+    }
+    CPDF_StreamAcc* pFontFile = FX_NEW CPDF_StreamAcc;
+    if (!pFontFile) {
+        delete ftData;
+        return NULL;
+    }
+    CPDF_Dictionary* pFontDict = pFontStream->GetDict();
+    FX_INT32 org_size = pFontDict->GetInteger(FX_BSTRC("Length1")) + pFontDict->GetInteger(FX_BSTRC("Length2")) + pFontDict->GetInteger(FX_BSTRC("Length3"));
+    if (org_size < 0) {
+        org_size = 0;
+    }
+    pFontFile->LoadAllData(pFontStream, FALSE, org_size);
+    ftData->m_nCount = 2;
+    ftData->m_Obj = pFontFile;
+    m_FontFileMap.SetAt(pFontStream, ftData);
+    return pFontFile;
+}
+void CPDF_DocPageData::ReleaseFontFileStreamAcc(CPDF_Stream* pFontStream, FX_BOOL bForce)
+{
+    if (!pFontStream) {
+        return;
+    }
+    PDF_DocPageData_Release<CPDF_Stream*, CPDF_StreamAcc*>(m_FontFileMap, pFontStream, NULL, bForce);
+}