clang-format all pdfium code.

core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp

 // 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 "../../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 #include "../../../include/fpdfapi/fpdf_render.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "../../../include/fxcrt/fx_safe_types.h"
 #include "../../../include/fxge/fx_ge.h"
 #include "../fpdf_page/pageint.h"
 #include "render_int.h"
 
 namespace {
 
-unsigned int _GetBits8(const uint8_t* pData, int bitpos, int nbits)
-{
-    unsigned int byte = pData[bitpos / 8];
-    if (nbits == 8) {
-        return byte;
-    }
-    if (nbits == 4) {
-        return (bitpos % 8) ? (byte & 0x0f) : (byte >> 4);
-    }
-    if (nbits == 2) {
-        return (byte >> (6 - bitpos % 8)) & 0x03;
-    }
-    if (nbits == 1) {
-        return (byte >> (7 - bitpos % 8)) & 0x01;
-    }
-    if (nbits == 16) {
-        return byte * 256 + pData[bitpos / 8 + 1];
-    }
-    return 0;
+unsigned int _GetBits8(const uint8_t* pData, int bitpos, int nbits) {
+  unsigned int byte = pData[bitpos / 8];
+  if (nbits == 8) {
+    return byte;
+  }
+  if (nbits == 4) {
+    return (bitpos % 8) ? (byte & 0x0f) : (byte >> 4);
+  }
+  if (nbits == 2) {
+    return (byte >> (6 - bitpos % 8)) & 0x03;
+  }
+  if (nbits == 1) {
+    return (byte >> (7 - bitpos % 8)) & 0x01;
+  }
+  if (nbits == 16) {
+    return byte * 256 + pData[bitpos / 8 + 1];
+  }
+  return 0;
 }
 
 FX_SAFE_DWORD CalculatePitch8(FX_DWORD bpc,
                               FX_DWORD components,
                               int width,
-                              int height)
-{
-    FX_SAFE_DWORD pitch = bpc;
-    pitch *= components;
-    pitch *= width;
-    pitch += 7;
-    pitch /= 8;
-    pitch *= height;
-    return pitch;
-}
-
-FX_SAFE_DWORD CalculatePitch32(int bpp, int width)
-{
-    FX_SAFE_DWORD pitch = bpp;
-    pitch *= width;
-    pitch += 31;
-    pitch /= 8;
-    return pitch;
+                              int height) {
+  FX_SAFE_DWORD pitch = bpc;
+  pitch *= components;
+  pitch *= width;
+  pitch += 7;
+  pitch /= 8;
+  pitch *= height;
+  return pitch;
+}
+
+FX_SAFE_DWORD CalculatePitch32(int bpp, int width) {
+  FX_SAFE_DWORD pitch = bpp;
+  pitch *= width;
+  pitch += 31;
+  pitch /= 8;
+  return pitch;
 }
 
 // Wrapper class to hold objects allocated in CPDF_DIBSource::LoadJpxBitmap(),
 // because nonstd::unique_ptr does not support custom deleters yet.
-class JpxBitMapContext
-{
-  public:
-    explicit JpxBitMapContext(ICodec_JpxModule* jpx_module)
-        : jpx_module_(jpx_module),
-          ctx_(nullptr),
-          output_offsets_(nullptr) {}
-
-    ~JpxBitMapContext() {
-        FX_Free(output_offsets_);
-        jpx_module_->DestroyDecoder(ctx_);
-    }
-
-    // Takes ownership of |ctx|.
-    void set_context(void* ctx) {
-        ctx_ = ctx;
-    }
-
-    void* context() {
-        return ctx_;
-    }
-
-    // Takes ownership of |output_offsets|.
-    void set_output_offsets(unsigned char* output_offsets) {
-      output_offsets_ = output_offsets;
-    }
-
-    unsigned char* output_offsets() {
-      return output_offsets_;
-    }
-
-  private:
-    ICodec_JpxModule* jpx_module_;  // Weak pointer.
-    void* ctx_;  // Decoder context, owned.
-    unsigned char* output_offsets_;  // Output offsets for decoding, owned.
-
-    // Disallow evil constructors
-    JpxBitMapContext(const JpxBitMapContext&);
-    void operator=(const JpxBitMapContext&);
+class JpxBitMapContext {
+ public:
+  explicit JpxBitMapContext(ICodec_JpxModule* jpx_module)
+      : jpx_module_(jpx_module), ctx_(nullptr), output_offsets_(nullptr) {}
+
+  ~JpxBitMapContext() {
+    FX_Free(output_offsets_);
+    jpx_module_->DestroyDecoder(ctx_);
+  }
+
+  // Takes ownership of |ctx|.
+  void set_context(void* ctx) { ctx_ = ctx; }
+
+  void* context() { return ctx_; }
+
+  // Takes ownership of |output_offsets|.
+  void set_output_offsets(unsigned char* output_offsets) {
+    output_offsets_ = output_offsets;
+  }
+
+  unsigned char* output_offsets() { return output_offsets_; }
+
+ private:
+  ICodec_JpxModule* jpx_module_;   // Weak pointer.
+  void* ctx_;                      // Decoder context, owned.
+  unsigned char* output_offsets_;  // Output offsets for decoding, owned.
+
+  // Disallow evil constructors
+  JpxBitMapContext(const JpxBitMapContext&);
+  void operator=(const JpxBitMapContext&);
 };
 
 }  // namespace
 
-CFX_DIBSource* CPDF_Image::LoadDIBSource(CFX_DIBSource** ppMask, FX_DWORD* pMatteColor, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask) const
-{
-    CPDF_DIBSource* pSource = new CPDF_DIBSource;
-    if (pSource->Load(m_pDocument, m_pStream, (CPDF_DIBSource**)ppMask, pMatteColor, NULL, NULL, bStdCS, GroupFamily, bLoadMask)) {
-        return pSource;
-    }
-    delete pSource;
+CFX_DIBSource* CPDF_Image::LoadDIBSource(CFX_DIBSource** ppMask,
+                                         FX_DWORD* pMatteColor,
+                                         FX_BOOL bStdCS,
+                                         FX_DWORD GroupFamily,
+                                         FX_BOOL bLoadMask) const {
+  CPDF_DIBSource* pSource = new CPDF_DIBSource;
+  if (pSource->Load(m_pDocument, m_pStream, (CPDF_DIBSource**)ppMask,
+                    pMatteColor, NULL, NULL, bStdCS, GroupFamily, bLoadMask)) {
+    return pSource;
+  }
+  delete pSource;
+  return NULL;
+}
+CFX_DIBSource* CPDF_Image::DetachBitmap() {
+  CFX_DIBSource* pBitmap = m_pDIBSource;
+  m_pDIBSource = NULL;
+  return pBitmap;
+}
+CFX_DIBSource* CPDF_Image::DetachMask() {
+  CFX_DIBSource* pBitmap = m_pMask;
+  m_pMask = NULL;
+  return pBitmap;
+}
+FX_BOOL CPDF_Image::StartLoadDIBSource(CPDF_Dictionary* pFormResource,
+                                       CPDF_Dictionary* pPageResource,
+                                       FX_BOOL bStdCS,
+                                       FX_DWORD GroupFamily,
+                                       FX_BOOL bLoadMask) {
+  m_pDIBSource = new CPDF_DIBSource;
+  int ret =
+      ((CPDF_DIBSource*)m_pDIBSource)
+          ->StartLoadDIBSource(m_pDocument, m_pStream, TRUE, pFormResource,
+                               pPageResource, bStdCS, GroupFamily, bLoadMask);
+  if (ret == 2) {
+    return TRUE;
+  }
+  if (!ret) {
+    delete m_pDIBSource;
+    m_pDIBSource = NULL;
+    return FALSE;
+  }
+  m_pMask = ((CPDF_DIBSource*)m_pDIBSource)->DetachMask();
+  m_MatteColor = ((CPDF_DIBSource*)m_pDIBSource)->m_MatteColor;
+  return FALSE;
+}
+FX_BOOL CPDF_Image::Continue(IFX_Pause* pPause) {
+  int ret = ((CPDF_DIBSource*)m_pDIBSource)->ContinueLoadDIBSource(pPause);
+  if (ret == 2) {
+    return TRUE;
+  }
+  if (!ret) {
+    delete m_pDIBSource;
+    m_pDIBSource = NULL;
+    return FALSE;
+  }
+  m_pMask = ((CPDF_DIBSource*)m_pDIBSource)->DetachMask();
+  m_MatteColor = ((CPDF_DIBSource*)m_pDIBSource)->m_MatteColor;
+  return FALSE;
+}
+CPDF_DIBSource::CPDF_DIBSource() {
+  m_pDocument = NULL;
+  m_pStreamAcc = NULL;
+  m_pDict = NULL;
+  m_bpp = 0;
+  m_Width = m_Height = 0;
+  m_pColorSpace = NULL;
+  m_bDefaultDecode = TRUE;
+  m_bImageMask = FALSE;
+  m_bDoBpcCheck = TRUE;
+  m_pPalette = NULL;
+  m_pCompData = NULL;
+  m_bColorKey = FALSE;
+  m_pMaskedLine = m_pLineBuf = NULL;
+  m_pDecoder = NULL;
+  m_nComponents = 0;
+  m_bpc = 0;
+  m_bLoadMask = FALSE;
+  m_Family = 0;
+  m_pMask = NULL;
+  m_MatteColor = 0;
+  m_pJbig2Context = NULL;
+  m_pGlobalStream = NULL;
+  m_bStdCS = FALSE;
+  m_pMaskStream = NULL;
+  m_Status = 0;
+  m_bHasMask = FALSE;
+}
+CPDF_DIBSource::~CPDF_DIBSource() {
+  delete m_pStreamAcc;
+  if (m_pMaskedLine) {
+    FX_Free(m_pMaskedLine);
+  }
+  if (m_pLineBuf) {
+    FX_Free(m_pLineBuf);
+  }
+  m_pCachedBitmap.reset();
+  delete m_pDecoder;
+  if (m_pCompData) {
+    FX_Free(m_pCompData);
+  }
+  CPDF_ColorSpace* pCS = m_pColorSpace;
+  if (pCS && m_pDocument) {
+    m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
+  }
+  if (m_pJbig2Context) {
+    ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module();
+    pJbig2Module->DestroyJbig2Context(m_pJbig2Context);
+  }
+  delete m_pGlobalStream;
+}
+CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const {
+  return m_pCachedBitmap ? m_pCachedBitmap.get() : Clone();
+}
+void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const {
+  if (pBitmap && pBitmap != m_pCachedBitmap) {
+    delete pBitmap;
+  }
+}
+FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc,
+                             const CPDF_Stream* pStream,
+                             CPDF_DIBSource** ppMask,
+                             FX_DWORD* pMatteColor,
+                             CPDF_Dictionary* pFormResources,
+                             CPDF_Dictionary* pPageResources,
+                             FX_BOOL bStdCS,
+                             FX_DWORD GroupFamily,
+                             FX_BOOL bLoadMask) {
+  if (pStream == NULL) {
+    return FALSE;
+  }
+  m_pDocument = pDoc;
+  m_pDict = pStream->GetDict();
+  if (m_pDict == NULL) {
+    return FALSE;
+  }
+  m_pStream = pStream;
+  m_Width = m_pDict->GetInteger(FX_BSTRC("Width"));
+  m_Height = m_pDict->GetInteger(FX_BSTRC("Height"));
+  if (m_Width <= 0 || m_Height <= 0 || m_Width > 0x01ffff ||
+      m_Height > 0x01ffff) {
+    return FALSE;
+  }
+  m_GroupFamily = GroupFamily;
+  m_bLoadMask = bLoadMask;
+  if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? NULL : pFormResources,
+                     pPageResources)) {
+    return FALSE;
+  }
+  if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) {
+    return FALSE;
+  }
+  FX_SAFE_DWORD src_pitch =
+      CalculatePitch8(m_bpc, m_nComponents, m_Width, m_Height);
+  if (!src_pitch.IsValid()) {
+    return FALSE;
+  }
+  m_pStreamAcc = new CPDF_StreamAcc;
+  m_pStreamAcc->LoadAllData(pStream, FALSE, src_pitch.ValueOrDie(), TRUE);
+  if (m_pStreamAcc->GetSize() == 0 || m_pStreamAcc->GetData() == NULL) {
+    return FALSE;
+  }
+  if (!CreateDecoder()) {
+    return FALSE;
+  }
+  if (m_bImageMask) {
+    m_bpp = 1;
+    m_bpc = 1;
+    m_nComponents = 1;
+    m_AlphaFlag = 1;
+  } else if (m_bpc * m_nComponents == 1) {
+    m_bpp = 1;
+  } else if (m_bpc * m_nComponents <= 8) {
+    m_bpp = 8;
+  } else {
+    m_bpp = 24;
+  }
+  FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width);
+  if (!pitch.IsValid()) {
+    return FALSE;
+  }
+  m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie());
+  if (m_pColorSpace && bStdCS) {
+    m_pColorSpace->EnableStdConversion(TRUE);
+  }
+  LoadPalette();
+  if (m_bColorKey) {
+    m_bpp = 32;
+    m_AlphaFlag = 2;
+    pitch = CalculatePitch32(m_bpp, m_Width);
+    if (!pitch.IsValid()) {
+      return FALSE;
+    }
+    m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie());
+  }
+  m_Pitch = pitch.ValueOrDie();
+  if (ppMask) {
+    *ppMask = LoadMask(*pMatteColor);
+  }
+  if (m_pColorSpace && bStdCS) {
+    m_pColorSpace->EnableStdConversion(FALSE);
+  }
+  return TRUE;
+}
+int CPDF_DIBSource::ContinueToLoadMask() {
+  if (m_bImageMask) {
+    m_bpp = 1;
+    m_bpc = 1;
+    m_nComponents = 1;
+    m_AlphaFlag = 1;
+  } else if (m_bpc * m_nComponents == 1) {
+    m_bpp = 1;
+  } else if (m_bpc * m_nComponents <= 8) {
+    m_bpp = 8;
+  } else {
+    m_bpp = 24;
+  }
+  if (!m_bpc || !m_nComponents) {
+    return 0;
+  }
+  FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width);
+  if (!pitch.IsValid()) {
+    return 0;
+  }
+  m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie());
+  if (m_pColorSpace && m_bStdCS) {
+    m_pColorSpace->EnableStdConversion(TRUE);
+  }
+  LoadPalette();
+  if (m_bColorKey) {
+    m_bpp = 32;
+    m_AlphaFlag = 2;
+    pitch = CalculatePitch32(m_bpp, m_Width);
+    if (!pitch.IsValid()) {
+      return 0;
+    }
+    m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie());
+  }
+  m_Pitch = pitch.ValueOrDie();
+  return 1;
+}
+int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc,
+                                       const CPDF_Stream* pStream,
+                                       FX_BOOL bHasMask,
+                                       CPDF_Dictionary* pFormResources,
+                                       CPDF_Dictionary* pPageResources,
+                                       FX_BOOL bStdCS,
+                                       FX_DWORD GroupFamily,
+                                       FX_BOOL bLoadMask) {
+  if (pStream == NULL) {
+    return 0;
+  }
+  m_pDocument = pDoc;
+  m_pDict = pStream->GetDict();
+  m_pStream = pStream;
+  m_bStdCS = bStdCS;
+  m_bHasMask = bHasMask;
+  m_Width = m_pDict->GetInteger(FX_BSTRC("Width"));
+  m_Height = m_pDict->GetInteger(FX_BSTRC("Height"));
+  if (m_Width <= 0 || m_Height <= 0 || m_Width > 0x01ffff ||
+      m_Height > 0x01ffff) {
+    return 0;
+  }
+  m_GroupFamily = GroupFamily;
+  m_bLoadMask = bLoadMask;
+  if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? NULL : pFormResources,
+                     pPageResources)) {
+    return 0;
+  }
+  if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) {
+    return 0;
+  }
+  FX_SAFE_DWORD src_pitch =
+      CalculatePitch8(m_bpc, m_nComponents, m_Width, m_Height);
+  if (!src_pitch.IsValid()) {
+    return 0;
+  }
+  m_pStreamAcc = new CPDF_StreamAcc;
+  m_pStreamAcc->LoadAllData(pStream, FALSE, src_pitch.ValueOrDie(), TRUE);
+  if (m_pStreamAcc->GetSize() == 0 || m_pStreamAcc->GetData() == NULL) {
+    return 0;
+  }
+  int ret = CreateDecoder();
+  if (ret != 1) {
+    if (!ret) {
+      return ret;
+    }
+    if (!ContinueToLoadMask()) {
+      return 0;
+    }
+    if (m_bHasMask) {
+      StratLoadMask();
+    }
+    return ret;
+  }
+  if (!ContinueToLoadMask()) {
+    return 0;
+  }
+  if (m_bHasMask) {
+    ret = StratLoadMask();
+  }
+  if (ret == 2) {
+    return ret;
+  }
+  if (m_pColorSpace && m_bStdCS) {
+    m_pColorSpace->EnableStdConversion(FALSE);
+  }
+  return ret;
+}
+int CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause) {
+  FXCODEC_STATUS ret;
+  if (m_Status == 1) {
+    const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder();
+    if (decoder == FX_BSTRC("JPXDecode")) {
+      return 0;
+    }
+    ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module();
+    if (m_pJbig2Context == NULL) {
+      m_pJbig2Context = pJbig2Module->CreateJbig2Context();
+      if (m_pStreamAcc->GetImageParam()) {
+        CPDF_Stream* pGlobals =
+            m_pStreamAcc->GetImageParam()->GetStream(FX_BSTRC("JBIG2Globals"));
+        if (pGlobals) {
+          m_pGlobalStream = new CPDF_StreamAcc;
+          m_pGlobalStream->LoadAllData(pGlobals, FALSE);
+        }
+      }
+      ret = pJbig2Module->StartDecode(
+          m_pJbig2Context, m_Width, m_Height, m_pStreamAcc->GetData(),
+          m_pStreamAcc->GetSize(),
+          m_pGlobalStream ? m_pGlobalStream->GetData() : NULL,
+          m_pGlobalStream ? m_pGlobalStream->GetSize() : 0,
+          m_pCachedBitmap->GetBuffer(), m_pCachedBitmap->GetPitch(), pPause);
+      if (ret < 0) {
+        m_pCachedBitmap.reset();
+        delete m_pGlobalStream;
+        m_pGlobalStream = NULL;
+        pJbig2Module->DestroyJbig2Context(m_pJbig2Context);
+        m_pJbig2Context = NULL;
+        return 0;
+      }
+      if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
+        return 2;
+      }
+      int ret1 = 1;
+      if (m_bHasMask) {
+        ret1 = ContinueLoadMaskDIB(pPause);
+        m_Status = 2;
+      }
+      if (ret1 == 2) {
+        return ret1;
+      }
+      if (m_pColorSpace && m_bStdCS) {
+        m_pColorSpace->EnableStdConversion(FALSE);
+      }
+      return ret1;
+    }
+    FXCODEC_STATUS ret = pJbig2Module->ContinueDecode(m_pJbig2Context, pPause);
+    if (ret < 0) {
+      m_pCachedBitmap.reset();
+      delete m_pGlobalStream;
+      m_pGlobalStream = NULL;
+      pJbig2Module->DestroyJbig2Context(m_pJbig2Context);
+      m_pJbig2Context = NULL;
+      return 0;
+    }
+    if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
+      return 2;
+    }
+    int ret1 = 1;
+    if (m_bHasMask) {
+      ret1 = ContinueLoadMaskDIB(pPause);
+      m_Status = 2;
+    }
+    if (ret1 == 2) {
+      return ret1;
+    }
+    if (m_pColorSpace && m_bStdCS) {
+      m_pColorSpace->EnableStdConversion(FALSE);
+    }
+    return ret1;
+  }
+  if (m_Status == 2) {
+    return ContinueLoadMaskDIB(pPause);
+  }
+  return 0;
+}
+FX_BOOL CPDF_DIBSource::LoadColorInfo(CPDF_Dictionary* pFormResources,
+                                      CPDF_Dictionary* pPageResources) {
+  m_bpc_orig = m_pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
+  if (m_pDict->GetInteger("ImageMask")) {
+    m_bImageMask = TRUE;
+  }
+  if (m_bImageMask || !m_pDict->KeyExist(FX_BSTRC("ColorSpace"))) {
+    if (!m_bImageMask) {
+      CPDF_Object* pFilter = m_pDict->GetElementValue(FX_BSTRC("Filter"));
+      if (pFilter) {
+        CFX_ByteString filter;
+        if (pFilter->GetType() == PDFOBJ_NAME) {
+          filter = pFilter->GetString();
+          if (filter == FX_BSTRC("JPXDecode")) {
+            m_bDoBpcCheck = FALSE;
+            return TRUE;
+          }
+        } else if (pFilter->GetType() == PDFOBJ_ARRAY) {
+          CPDF_Array* pArray = (CPDF_Array*)pFilter;
+          if (pArray->GetString(pArray->GetCount() - 1) ==
+              FX_BSTRC("JPXDecode")) {
+            m_bDoBpcCheck = FALSE;
+            return TRUE;
+          }
+        }
+      }
+    }
+    m_bImageMask = TRUE;
+    m_bpc = m_nComponents = 1;
+    CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode"));
+    m_bDefaultDecode = pDecode == NULL || pDecode->GetInteger(0) == 0;
+    return TRUE;
+  }
+  CPDF_Object* pCSObj = m_pDict->GetElementValue(FX_BSTRC("ColorSpace"));
+  if (pCSObj == NULL) {
+    return FALSE;
+  }
+  CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData();
+  if (pFormResources) {
+    m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pFormResources);
+  }
+  if (m_pColorSpace == NULL) {
+    m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pPageResources);
+  }
+  if (m_pColorSpace == NULL) {
+    return FALSE;
+  }
+  m_Family = m_pColorSpace->GetFamily();
+  m_nComponents = m_pColorSpace->CountComponents();
+  if (m_Family == PDFCS_ICCBASED && pCSObj->GetType() == PDFOBJ_NAME) {
+    CFX_ByteString cs = pCSObj->GetString();
+    if (cs == FX_BSTRC("DeviceGray")) {
+      m_nComponents = 1;
+    } else if (cs == FX_BSTRC("DeviceRGB")) {
+      m_nComponents = 3;
+    } else if (cs == FX_BSTRC("DeviceCMYK")) {
+      m_nComponents = 4;
+    }
+  }
+  ValidateDictParam();
+  m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey);
+  if (m_pCompData == NULL) {
+    return FALSE;
+  }
+  return TRUE;
+}
+DIB_COMP_DATA* CPDF_DIBSource::GetDecodeAndMaskArray(FX_BOOL& bDefaultDecode,
+                                                     FX_BOOL& bColorKey) {
+  if (m_pColorSpace == NULL) {
     return NULL;
-}
-CFX_DIBSource* CPDF_Image::DetachBitmap()
-{
-    CFX_DIBSource* pBitmap = m_pDIBSource;
-    m_pDIBSource = NULL;
-    return pBitmap;
-}
-CFX_DIBSource* CPDF_Image::DetachMask()
-{
-    CFX_DIBSource* pBitmap = m_pMask;
+  }
+  DIB_COMP_DATA* pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents);
+  int max_data = (1 << m_bpc) - 1;
+  CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode"));
+  if (pDecode) {
+    for (FX_DWORD i = 0; i < m_nComponents; i++) {
+      pCompData[i].m_DecodeMin = pDecode->GetNumber(i * 2);
+      FX_FLOAT max = pDecode->GetNumber(i * 2 + 1);
+      pCompData[i].m_DecodeStep = (max - pCompData[i].m_DecodeMin) / max_data;
+      FX_FLOAT def_value, def_min, def_max;
+      m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max);
+      if (m_Family == PDFCS_INDEXED) {
+        def_max = (FX_FLOAT)max_data;
+      }
+      if (def_min != pCompData[i].m_DecodeMin || def_max != max) {
+        bDefaultDecode = FALSE;
+      }
+    }
+  } else {
+    for (FX_DWORD i = 0; i < m_nComponents; i++) {
+      FX_FLOAT def_value;
+      m_pColorSpace->GetDefaultValue(i, def_value, pCompData[i].m_DecodeMin,
+                                     pCompData[i].m_DecodeStep);
+      if (m_Family == PDFCS_INDEXED) {
+        pCompData[i].m_DecodeStep = (FX_FLOAT)max_data;
+      }
+      pCompData[i].m_DecodeStep =
+          (pCompData[i].m_DecodeStep - pCompData[i].m_DecodeMin) / max_data;
+    }
+  }
+  if (!m_pDict->KeyExist(FX_BSTRC("SMask"))) {
+    CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask"));
+    if (pMask == NULL) {
+      return pCompData;
+    }
+    if (pMask->GetType() == PDFOBJ_ARRAY) {
+      CPDF_Array* pArray = (CPDF_Array*)pMask;
+      if (pArray->GetCount() >= m_nComponents * 2) {
+        for (FX_DWORD i = 0; i < m_nComponents; i++) {
+          int min_num = pArray->GetInteger(i * 2);
+          int max_num = pArray->GetInteger(i * 2 + 1);
+          pCompData[i].m_ColorKeyMin = FX_MAX(min_num, 0);
+          pCompData[i].m_ColorKeyMax = FX_MIN(max_num, max_data);
+        }
+      }
+      bColorKey = TRUE;
+    }
+  }
+  return pCompData;
+}
+ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(
+    const uint8_t* src_buf,
+    FX_DWORD src_size,
+    int width,
+    int height,
+    const CPDF_Dictionary* pParams);
+ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(
+    const uint8_t* src_buf,
+    FX_DWORD src_size,
+    int width,
+    int height,
+    int nComps,
+    int bpc,
+    const CPDF_Dictionary* pParams);
+int CPDF_DIBSource::CreateDecoder() {
+  const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder();
+  if (decoder.IsEmpty()) {
+    return 1;
+  }
+  if (m_bDoBpcCheck && m_bpc == 0) {
+    return 0;
+  }
+  const uint8_t* src_data = m_pStreamAcc->GetData();
+  FX_DWORD src_size = m_pStreamAcc->GetSize();
+  const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam();
+  if (decoder == FX_BSTRC("CCITTFaxDecode")) {
+    m_pDecoder = FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, m_Height,
+                                          pParams);
+  } else if (decoder == FX_BSTRC("DCTDecode")) {
+    m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
+        src_data, src_size, m_Width, m_Height, m_nComponents,
+        pParams ? pParams->GetInteger("ColorTransform", 1) : 1);
+    if (!m_pDecoder) {
+      FX_BOOL bTransform = FALSE;
+      int comps, bpc;
+      ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule();
+      if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, comps,
+                                bpc, bTransform)) {
+        if (m_nComponents != comps) {
+          FX_Free(m_pCompData);
+          m_nComponents = comps;
+          if (m_Family == PDFCS_LAB && m_nComponents != 3) {
+            m_pCompData = NULL;
+            return 0;
+          }
+          m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey);
+          if (m_pCompData == NULL) {
+            return 0;
+          }
+        }
+        m_bpc = bpc;
+        m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
+            src_data, src_size, m_Width, m_Height, m_nComponents, bTransform);
+      }
+    }
+  } else if (decoder == FX_BSTRC("FlateDecode")) {
+    m_pDecoder = FPDFAPI_CreateFlateDecoder(
+        src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams);
+  } else if (decoder == FX_BSTRC("JPXDecode")) {
+    LoadJpxBitmap();
+    return m_pCachedBitmap ? 1 : 0;
+  } else if (decoder == FX_BSTRC("JBIG2Decode")) {
+    m_pCachedBitmap.reset(new CFX_DIBitmap);
+    if (!m_pCachedBitmap->Create(
+            m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) {
+      m_pCachedBitmap.reset();
+      return 0;
+    }
+    m_Status = 1;
+    return 2;
+  } else if (decoder == FX_BSTRC("RunLengthDecode")) {
+    m_pDecoder = CPDF_ModuleMgr::Get()
+                     ->GetCodecModule()
+                     ->GetBasicModule()
+                     ->CreateRunLengthDecoder(src_data, src_size, m_Width,
+                                              m_Height, m_nComponents, m_bpc);
+  }
+  if (!m_pDecoder)
+    return 0;
+
+  FX_SAFE_DWORD requested_pitch =
+      CalculatePitch8(m_bpc, m_nComponents, m_Width, 1);
+  if (!requested_pitch.IsValid()) {
+    return 0;
+  }
+  FX_SAFE_DWORD provided_pitch =
+      CalculatePitch8(m_pDecoder->GetBPC(), m_pDecoder->CountComps(),
+                      m_pDecoder->GetWidth(), 1);
+  if (!provided_pitch.IsValid()) {
+    return 0;
+  }
+  if (provided_pitch.ValueOrDie() < requested_pitch.ValueOrDie()) {
+    return 0;
+  }
+  return 1;
+}
+void CPDF_DIBSource::LoadJpxBitmap() {
+  ICodec_JpxModule* pJpxModule = CPDF_ModuleMgr::Get()->GetJpxModule();
+  if (!pJpxModule)
+    return;
+
+  nonstd::unique_ptr<JpxBitMapContext> context(
+      new JpxBitMapContext(pJpxModule));
+  context->set_context(pJpxModule->CreateDecoder(m_pStreamAcc->GetData(),
+                                                 m_pStreamAcc->GetSize(),
+                                                 m_pColorSpace != nullptr));
+  if (!context->context())
+    return;
+
+  FX_DWORD width = 0;
+  FX_DWORD height = 0;
+  FX_DWORD codestream_nComps = 0;
+  FX_DWORD image_nComps = 0;
+  pJpxModule->GetImageInfo(context->context(), width, height, codestream_nComps,
+                           image_nComps);
+  if ((int)width < m_Width || (int)height < m_Height)
+    return;
+
+  int output_nComps;
+  FX_BOOL bTranslateColor;
+  FX_BOOL bSwapRGB = FALSE;
+  if (m_pColorSpace) {
+    if (codestream_nComps != (FX_DWORD)m_pColorSpace->CountComponents())
+      return;
+    output_nComps = codestream_nComps;
+    bTranslateColor = FALSE;
+    if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) {
+      bSwapRGB = TRUE;
+      m_pColorSpace = nullptr;
+    }
+  } else {
+    bTranslateColor = TRUE;
+    if (image_nComps) {
+      output_nComps = image_nComps;
+    } else {
+      output_nComps = codestream_nComps;
+    }
+    if (output_nComps == 3) {
+      bSwapRGB = TRUE;
+    } else if (output_nComps == 4) {
+      m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK);
+      bTranslateColor = FALSE;
+    }
+    m_nComponents = output_nComps;
+  }
+  FXDIB_Format format;
+  if (output_nComps == 1) {
+    format = FXDIB_8bppRgb;
+  } else if (output_nComps <= 3) {
+    format = FXDIB_Rgb;
+  } else if (output_nComps == 4) {
+    format = FXDIB_Rgb32;
+  } else {
+    width = (width * output_nComps + 2) / 3;
+    format = FXDIB_Rgb;
+  }
+  m_pCachedBitmap.reset(new CFX_DIBitmap);
+  if (!m_pCachedBitmap->Create(width, height, format)) {
+    m_pCachedBitmap.reset();
+    return;
+  }
+  m_pCachedBitmap->Clear(0xFFFFFFFF);
+  context->set_output_offsets(FX_Alloc(uint8_t, output_nComps));
+  for (int i = 0; i < output_nComps; ++i)
+    context->output_offsets()[i] = i;
+  if (bSwapRGB) {
+    context->output_offsets()[0] = 2;
+    context->output_offsets()[2] = 0;
+  }
+  if (!pJpxModule->Decode(context->context(), m_pCachedBitmap->GetBuffer(),
+                          m_pCachedBitmap->GetPitch(), bTranslateColor,
+                          context->output_offsets())) {
+    m_pCachedBitmap.reset();
+    return;
+  }
+  if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED &&
+      m_bpc < 8) {
+    int scale = 8 - m_bpc;
+    for (FX_DWORD row = 0; row < height; ++row) {
+      uint8_t* scanline = (uint8_t*)m_pCachedBitmap->GetScanline(row);
+      for (FX_DWORD col = 0; col < width; ++col) {
+        *scanline = (*scanline) >> scale;
+        ++scanline;
+      }
+    }
+  }
+  m_bpc = 8;
+}
+CPDF_DIBSource* CPDF_DIBSource::LoadMask(FX_DWORD& MatteColor) {
+  MatteColor = 0xffffffff;
+  CPDF_Stream* pSoftMask = m_pDict->GetStream(FX_BSTRC("SMask"));
+  if (pSoftMask) {
+    CPDF_Array* pMatte = pSoftMask->GetDict()->GetArray(FX_BSTRC("Matte"));
+    if (pMatte != NULL && m_pColorSpace &&
+        (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) {
+      FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents);
+      for (FX_DWORD i = 0; i < m_nComponents; i++) {
+        pColor[i] = pMatte->GetFloat(i);
+      }
+      FX_FLOAT R, G, B;
+      m_pColorSpace->GetRGB(pColor, R, G, B);
+      FX_Free(pColor);
+      MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255),
+                               FXSYS_round(B * 255));
+    }
+    return LoadMaskDIB(pSoftMask);
+  }
+  CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask"));
+  if (pMask == NULL) {
+    return NULL;
+  }
+  if (pMask->GetType() == PDFOBJ_STREAM) {
+    return LoadMaskDIB((CPDF_Stream*)pMask);
+  }
+  return NULL;
+}
+int CPDF_DIBSource::StratLoadMask() {
+  m_MatteColor = 0xffffffff;
+  m_pMaskStream = m_pDict->GetStream(FX_BSTRC("SMask"));
+  if (m_pMaskStream) {
+    CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArray(FX_BSTRC("Matte"));
+    if (pMatte != NULL && m_pColorSpace &&
+        (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) {
+      FX_FLOAT R, G, B;
+      FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents);
+      for (FX_DWORD i = 0; i < m_nComponents; i++) {
+        pColor[i] = pMatte->GetFloat(i);
+      }
+      m_pColorSpace->GetRGB(pColor, R, G, B);
+      FX_Free(pColor);
+      m_MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255),
+                                 FXSYS_round(B * 255));
+    }
+    return StartLoadMaskDIB();
+  }
+  m_pMaskStream = m_pDict->GetElementValue(FX_BSTRC("Mask"));
+  if (m_pMaskStream == NULL) {
+    return 1;
+  }
+  if (m_pMaskStream->GetType() == PDFOBJ_STREAM) {
+    return StartLoadMaskDIB();
+  }
+  return 1;
+}
+int CPDF_DIBSource::ContinueLoadMaskDIB(IFX_Pause* pPause) {
+  if (m_pMask == NULL) {
+    return 1;
+  }
+  int ret = m_pMask->ContinueLoadDIBSource(pPause);
+  if (ret == 2) {
+    return ret;
+  }
+  if (m_pColorSpace && m_bStdCS) {
+    m_pColorSpace->EnableStdConversion(FALSE);
+  }
+  if (!ret) {
+    delete m_pMask;
     m_pMask = NULL;
-    return pBitmap;
-}
-FX_BOOL CPDF_Image::StartLoadDIBSource(CPDF_Dictionary* pFormResource, CPDF_Dictionary* pPageResource, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask)
-{
-    m_pDIBSource = new CPDF_DIBSource;
-    int ret = ((CPDF_DIBSource*)m_pDIBSource)->StartLoadDIBSource(m_pDocument, m_pStream, TRUE, pFormResource, pPageResource, bStdCS, GroupFamily, bLoadMask);
-    if (ret == 2) {
-        return TRUE;
-    }
-    if (!ret) {
-        delete m_pDIBSource;
-        m_pDIBSource = NULL;
-        return FALSE;
-    }
-    m_pMask = ((CPDF_DIBSource*)m_pDIBSource)->DetachMask();
-    m_MatteColor = ((CPDF_DIBSource*)m_pDIBSource)->m_MatteColor;
-    return FALSE;
-}
-FX_BOOL CPDF_Image::Continue(IFX_Pause* pPause)
-{
-    int ret = ((CPDF_DIBSource*)m_pDIBSource)->ContinueLoadDIBSource(pPause);
-    if (ret == 2) {
-        return TRUE;
-    }
-    if (!ret) {
-        delete m_pDIBSource;
-        m_pDIBSource = NULL;
-        return FALSE;
-    }
-    m_pMask = ((CPDF_DIBSource*)m_pDIBSource)->DetachMask();
-    m_MatteColor = ((CPDF_DIBSource*)m_pDIBSource)->m_MatteColor;
-    return FALSE;
-}
-CPDF_DIBSource::CPDF_DIBSource()
-{
-    m_pDocument = NULL;
-    m_pStreamAcc = NULL;
-    m_pDict = NULL;
-    m_bpp = 0;
-    m_Width = m_Height = 0;
-    m_pColorSpace = NULL;
-    m_bDefaultDecode = TRUE;
-    m_bImageMask = FALSE;
-    m_bDoBpcCheck = TRUE;
-    m_pPalette = NULL;
-    m_pCompData = NULL;
-    m_bColorKey = FALSE;
-    m_pMaskedLine = m_pLineBuf = NULL;
-    m_pDecoder = NULL;
-    m_nComponents = 0;
-    m_bpc = 0;
-    m_bLoadMask = FALSE;
-    m_Family = 0;
+    return ret;
+  }
+  return 1;
+}
+CPDF_DIBSource* CPDF_DIBSource::DetachMask() {
+  CPDF_DIBSource* pDIBSource = m_pMask;
+  m_pMask = NULL;
+  return pDIBSource;
+}
+CPDF_DIBSource* CPDF_DIBSource::LoadMaskDIB(CPDF_Stream* pMask) {
+  CPDF_DIBSource* pMaskSource = new CPDF_DIBSource;
+  if (!pMaskSource->Load(m_pDocument, pMask, NULL, NULL, NULL, NULL, TRUE)) {
+    delete pMaskSource;
+    return NULL;
+  }
+  return pMaskSource;
+}
+int CPDF_DIBSource::StartLoadMaskDIB() {
+  m_pMask = new CPDF_DIBSource;
+  int ret = m_pMask->StartLoadDIBSource(
+      m_pDocument, (CPDF_Stream*)m_pMaskStream, FALSE, NULL, NULL, TRUE);
+  if (ret == 2) {
+    if (m_Status == 0) {
+      m_Status = 2;
+    }
+    return 2;
+  }
+  if (!ret) {
+    delete m_pMask;
     m_pMask = NULL;
-    m_MatteColor = 0;
-    m_pJbig2Context = NULL;
-    m_pGlobalStream = NULL;
-    m_bStdCS = FALSE;
-    m_pMaskStream = NULL;
-    m_Status = 0;
-    m_bHasMask = FALSE;
-}
-CPDF_DIBSource::~CPDF_DIBSource()
-{
-    delete m_pStreamAcc;
-    if (m_pMaskedLine) {
-        FX_Free(m_pMaskedLine);
-    }
-    if (m_pLineBuf) {
-        FX_Free(m_pLineBuf);
-    }
-    m_pCachedBitmap.reset();
-    delete m_pDecoder;
-    if (m_pCompData) {
-        FX_Free(m_pCompData);
-    }
-    CPDF_ColorSpace* pCS = m_pColorSpace;
-    if (pCS && m_pDocument) {
-        m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
-    }
-    if (m_pJbig2Context) {
-        ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module();
-        pJbig2Module->DestroyJbig2Context(m_pJbig2Context);
-    }
-    delete m_pGlobalStream;
-}
-CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const
-{
-    return m_pCachedBitmap ? m_pCachedBitmap.get() : Clone();
-}
-void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const
-{
-    if (pBitmap && pBitmap != m_pCachedBitmap) {
-        delete pBitmap;
-    }
-}
-FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc, const CPDF_Stream* pStream, CPDF_DIBSource** ppMask,
-                             FX_DWORD* pMatteColor, CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask)
-{
-    if (pStream == NULL) {
-        return FALSE;
-    }
-    m_pDocument = pDoc;
-    m_pDict = pStream->GetDict();
-    if (m_pDict == NULL) {
-        return FALSE;
-    }
-    m_pStream = pStream;
-    m_Width = m_pDict->GetInteger(FX_BSTRC("Width"));
-    m_Height = m_pDict->GetInteger(FX_BSTRC("Height"));
-    if (m_Width <= 0 || m_Height <= 0 || m_Width > 0x01ffff || m_Height > 0x01ffff) {
-        return FALSE;
-    }
-    m_GroupFamily = GroupFamily;
-    m_bLoadMask = bLoadMask;
-    if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? NULL : pFormResources, pPageResources)) {
-        return FALSE;
-    }
-    if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) {
-        return FALSE;
-    }
-    FX_SAFE_DWORD src_pitch =
-        CalculatePitch8(m_bpc, m_nComponents, m_Width, m_Height);
-    if (!src_pitch.IsValid()) {
-        return FALSE;
-    }
-    m_pStreamAcc = new CPDF_StreamAcc;
-    m_pStreamAcc->LoadAllData(pStream, FALSE, src_pitch.ValueOrDie(), TRUE);
-    if (m_pStreamAcc->GetSize() == 0 || m_pStreamAcc->GetData() == NULL) {
-        return FALSE;
-    }
-    if (!CreateDecoder()) {
-        return FALSE;
-    }
-    if (m_bImageMask) {
-        m_bpp = 1;
+    return 1;
+  }
+  return 1;
+}
+void CPDF_DIBSource::LoadPalette() {
+  if (m_bpc == 0) {
+    return;
+  }
+  if (m_bpc * m_nComponents > 8) {
+    return;
+  }
+  if (m_pColorSpace == NULL) {
+    return;
+  }
+  if (m_bpc * m_nComponents == 1) {
+    if (m_bDefaultDecode &&
+        (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) {
+      return;
+    }
+    if (m_pColorSpace->CountComponents() > 3) {
+      return;
+    }
+    FX_FLOAT color_values[3];
+    color_values[0] = m_pCompData[0].m_DecodeMin;
+    color_values[1] = color_values[2] = color_values[0];
+    FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
+    m_pColorSpace->GetRGB(color_values, R, G, B);
+    FX_ARGB argb0 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255),
+                               FXSYS_round(B * 255));
+    color_values[0] += m_pCompData[0].m_DecodeStep;
+    color_values[1] += m_pCompData[0].m_DecodeStep;
+    color_values[2] += m_pCompData[0].m_DecodeStep;
+    m_pColorSpace->GetRGB(color_values, R, G, B);
+    FX_ARGB argb1 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255),
+                               FXSYS_round(B * 255));
+    if (argb0 != 0xFF000000 || argb1 != 0xFFFFFFFF) {
+      SetPaletteArgb(0, argb0);
+      SetPaletteArgb(1, argb1);
+    }
+    return;
+  }
+  if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) &&
+      m_bpc == 8 && m_bDefaultDecode) {
+  } else {
+    int palette_count = 1 << (m_bpc * m_nComponents);
+    CFX_FixedBufGrow<FX_FLOAT, 16> color_values(m_nComponents);
+    FX_FLOAT* color_value = color_values;
+    for (int i = 0; i < palette_count; i++) {
+      int color_data = i;
+      for (FX_DWORD j = 0; j < m_nComponents; j++) {
+        int encoded_component = color_data % (1 << m_bpc);
+        color_data /= 1 << m_bpc;
+        color_value[j] = m_pCompData[j].m_DecodeMin +
+                         m_pCompData[j].m_DecodeStep * encoded_component;
+      }
+      FX_FLOAT R = 0, G = 0, B = 0;
+      if (m_nComponents == 1 && m_Family == PDFCS_ICCBASED &&
+          m_pColorSpace->CountComponents() > 1) {
+        int nComponents = m_pColorSpace->CountComponents();
+        FX_FLOAT* temp_buf = FX_Alloc(FX_FLOAT, nComponents);
+        for (int i = 0; i < nComponents; i++) {
+          temp_buf[i] = *color_value;
+        }
+        m_pColorSpace->GetRGB(temp_buf, R, G, B);
+        FX_Free(temp_buf);
+      } else {
+        m_pColorSpace->GetRGB(color_value, R, G, B);
+      }
+      SetPaletteArgb(i, ArgbEncode(255, FXSYS_round(R * 255),
+                                   FXSYS_round(G * 255), FXSYS_round(B * 255)));
+    }
+  }
+}
+void CPDF_DIBSource::ValidateDictParam() {
+  m_bpc = m_bpc_orig;
+  CPDF_Object* pFilter = m_pDict->GetElementValue(FX_BSTRC("Filter"));
+  if (pFilter) {
+    if (pFilter->GetType() == PDFOBJ_NAME) {
+      CFX_ByteString filter = pFilter->GetString();
+      if (filter == FX_BSTRC("CCITTFaxDecode") ||
+          filter == FX_BSTRC("JBIG2Decode")) {
         m_bpc = 1;
         m_nComponents = 1;
-        m_AlphaFlag = 1;
-    } else if (m_bpc * m_nComponents == 1) {
-        m_bpp = 1;
-    } else if (m_bpc * m_nComponents <= 8) {
-        m_bpp = 8;
-    } else {
-        m_bpp = 24;
-    }
-    FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width);
-    if (!pitch.IsValid()) {
-        return FALSE;
-    }
-    m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie());
-    if (m_pColorSpace && bStdCS) {
-        m_pColorSpace->EnableStdConversion(TRUE);
-    }
-    LoadPalette();
-    if (m_bColorKey) {
-        m_bpp = 32;
-        m_AlphaFlag = 2;
-        pitch = CalculatePitch32(m_bpp, m_Width);
-        if (!pitch.IsValid()) {
-            return FALSE;
-        }
-        m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie());
-    }
-    m_Pitch = pitch.ValueOrDie();
-    if (ppMask) {
-        *ppMask = LoadMask(*pMatteColor);
-    }
-    if (m_pColorSpace && bStdCS) {
-        m_pColorSpace->EnableStdConversion(FALSE);
-    }
-    return TRUE;
-}
-int     CPDF_DIBSource::ContinueToLoadMask()
-{
-    if (m_bImageMask) {
-        m_bpp = 1;
+      }
+      if (filter == FX_BSTRC("RunLengthDecode") ||
+          filter == FX_BSTRC("DCTDecode")) {
+        m_bpc = 8;
+      }
+    } else if (pFilter->GetType() == PDFOBJ_ARRAY) {
+      CPDF_Array* pArray = (CPDF_Array*)pFilter;
+      if (pArray->GetString(pArray->GetCount() - 1) ==
+              FX_BSTRC("CCITTFaxDecode") ||
+          pArray->GetString(pArray->GetCount() - 1) ==
+              FX_BSTRC("JBIG2Decode")) {
         m_bpc = 1;
         m_nComponents = 1;
-        m_AlphaFlag = 1;
-    } else if (m_bpc * m_nComponents == 1) {
-        m_bpp = 1;
-    } else if (m_bpc * m_nComponents <= 8) {
-        m_bpp = 8;
+      }
+      if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("DCTDecode")) {
+        // Previously, pArray->GetString(pArray->GetCount() - 1) ==
+        // FX_BSTRC("RunLengthDecode") was checked in the "if" statement as
+        // well,
+        // but too many documents don't conform to it.
+        m_bpc = 8;
+      }
+    }
+  }
+  if (m_bpc != 1 && m_bpc != 2 && m_bpc != 4 && m_bpc != 8 && m_bpc != 16) {
+    m_bpc = 0;
+  }
+}
+#define NORMALCOLOR_MAX(color, max) \
+  (color) > (max) ? (max) : (color) < 0 ? 0 : (color);
+void CPDF_DIBSource::TranslateScanline24bpp(uint8_t* dest_scan,
+                                            const uint8_t* src_scan) const {
+  if (m_bpc == 0) {
+    return;
+  }
+  int max_data = (1 << m_bpc) - 1;
+  if (m_bDefaultDecode) {
+    if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) {
+      const uint8_t* src_pos = src_scan;
+      switch (m_bpc) {
+        case 16:
+          for (int col = 0; col < m_Width; col++) {
+            *dest_scan++ = src_pos[4];
+            *dest_scan++ = src_pos[2];
+            *dest_scan++ = *src_pos;
+            src_pos += 6;
+          }
+          break;
+        case 8:
+          for (int column = 0; column < m_Width; column++) {
+            *dest_scan++ = src_pos[2];
+            *dest_scan++ = src_pos[1];
+            *dest_scan++ = *src_pos;
+            src_pos += 3;
+          }
+          break;
+        default:
+          int src_bit_pos = 0;
+          int dest_byte_pos = 0;
+          for (int column = 0; column < m_Width; column++) {
+            int R = _GetBits8(src_scan, src_bit_pos, m_bpc);
+            src_bit_pos += m_bpc;
+            int G = _GetBits8(src_scan, src_bit_pos, m_bpc);
+            src_bit_pos += m_bpc;
+            int B = _GetBits8(src_scan, src_bit_pos, m_bpc);
+            src_bit_pos += m_bpc;
+            R = NORMALCOLOR_MAX(R, max_data);
+            G = NORMALCOLOR_MAX(G, max_data);
+            B = NORMALCOLOR_MAX(B, max_data);
+            dest_scan[dest_byte_pos] = B * 255 / max_data;
+            dest_scan[dest_byte_pos + 1] = G * 255 / max_data;
+            dest_scan[dest_byte_pos + 2] = R * 255 / max_data;
+            dest_byte_pos += 3;
+          }
+          break;
+      }
+      return;
+    }
+    if (m_bpc == 8) {
+      if (m_nComponents == m_pColorSpace->CountComponents())
+        m_pColorSpace->TranslateImageLine(
+            dest_scan, src_scan, m_Width, m_Width, m_Height,
+            m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK &&
+                m_Family == PDFCS_DEVICECMYK);
+      return;
+    }
+  }
+  CFX_FixedBufGrow<FX_FLOAT, 16> color_values1(m_nComponents);
+  FX_FLOAT* color_values = color_values1;
+  FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
+  if (m_bpc == 8) {
+    int src_byte_pos = 0;
+    int dest_byte_pos = 0;
+    for (int column = 0; column < m_Width; column++) {
+      for (FX_DWORD color = 0; color < m_nComponents; color++) {
+        int data = src_scan[src_byte_pos++];
+        color_values[color] = m_pCompData[color].m_DecodeMin +
+                              m_pCompData[color].m_DecodeStep * data;
+      }
+      if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK &&
+          m_Family == PDFCS_DEVICECMYK) {
+        FX_FLOAT k = 1.0f - color_values[3];
+        R = (1.0f - color_values[0]) * k;
+        G = (1.0f - color_values[1]) * k;
+        B = (1.0f - color_values[2]) * k;
+      } else {
+        m_pColorSpace->GetRGB(color_values, R, G, B);
+      }
+      R = NORMALCOLOR_MAX(R, 1);
+      G = NORMALCOLOR_MAX(G, 1);
+      B = NORMALCOLOR_MAX(B, 1);
+      dest_scan[dest_byte_pos] = (int32_t)(B * 255);
+      dest_scan[dest_byte_pos + 1] = (int32_t)(G * 255);
+      dest_scan[dest_byte_pos + 2] = (int32_t)(R * 255);
+      dest_byte_pos += 3;
+    }
+  } else {
+    int src_bit_pos = 0;
+    int dest_byte_pos = 0;
+    for (int column = 0; column < m_Width; column++) {
+      for (FX_DWORD color = 0; color < m_nComponents; color++) {
+        int data = _GetBits8(src_scan, src_bit_pos, m_bpc);
+        color_values[color] = m_pCompData[color].m_DecodeMin +
+                              m_pCompData[color].m_DecodeStep * data;
+        src_bit_pos += m_bpc;
+      }
+      if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK &&
+          m_Family == PDFCS_DEVICECMYK) {
+        FX_FLOAT k = 1.0f - color_values[3];
+        R = (1.0f - color_values[0]) * k;
+        G = (1.0f - color_values[1]) * k;
+        B = (1.0f - color_values[2]) * k;
+      } else {
+        m_pColorSpace->GetRGB(color_values, R, G, B);
+      }
+      R = NORMALCOLOR_MAX(R, 1);
+      G = NORMALCOLOR_MAX(G, 1);
+      B = NORMALCOLOR_MAX(B, 1);
+      dest_scan[dest_byte_pos] = (int32_t)(B * 255);
+      dest_scan[dest_byte_pos + 1] = (int32_t)(G * 255);
+      dest_scan[dest_byte_pos + 2] = (int32_t)(R * 255);
+      dest_byte_pos += 3;
+    }
+  }
+}
+uint8_t* CPDF_DIBSource::GetBuffer() const {
+  if (m_pCachedBitmap) {
+    return m_pCachedBitmap->GetBuffer();
+  }
+  return NULL;
+}
+const uint8_t* CPDF_DIBSource::GetScanline(int line) const {
+  if (m_bpc == 0) {
+    return NULL;
+  }
+  FX_SAFE_DWORD src_pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width, 1);
+  if (!src_pitch.IsValid())
+    return NULL;
+  FX_DWORD src_pitch_value = src_pitch.ValueOrDie();
+  const uint8_t* pSrcLine = NULL;
+  if (m_pCachedBitmap) {
+    if (line >= m_pCachedBitmap->GetHeight()) {
+      line = m_pCachedBitmap->GetHeight() - 1;
+    }
+    pSrcLine = m_pCachedBitmap->GetScanline(line);
+  } else if (m_pDecoder) {
+    pSrcLine = m_pDecoder->GetScanline(line);
+  } else {
+    if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch_value) {
+      pSrcLine = m_pStreamAcc->GetData() + line * src_pitch_value;
+    }
+  }
+  if (pSrcLine == NULL) {
+    uint8_t* pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf;
+    FXSYS_memset(pLineBuf, 0xff, m_Pitch);
+    return pLineBuf;
+  }
+  if (m_bpc * m_nComponents == 1) {
+    if (m_bImageMask && m_bDefaultDecode) {
+      for (FX_DWORD i = 0; i < src_pitch_value; i++) {
+        m_pLineBuf[i] = ~pSrcLine[i];
+      }
+    } else if (m_bColorKey) {
+      FX_DWORD reset_argb, set_argb;
+      reset_argb = m_pPalette ? m_pPalette[0] : 0xff000000;
+      set_argb = m_pPalette ? m_pPalette[1] : 0xffffffff;
+      if (m_pCompData[0].m_ColorKeyMin == 0) {
+        reset_argb = 0;
+      }
+      if (m_pCompData[0].m_ColorKeyMax == 1) {
+        set_argb = 0;
+      }
+      set_argb = FXARGB_TODIB(set_argb);
+      reset_argb = FXARGB_TODIB(reset_argb);
+      FX_DWORD* dest_scan = (FX_DWORD*)m_pMaskedLine;
+      for (int col = 0; col < m_Width; col++) {
+        if (pSrcLine[col / 8] & (1 << (7 - col % 8))) {
+          *dest_scan = set_argb;
+        } else {
+          *dest_scan = reset_argb;
+        }
+        dest_scan++;
+      }
+      return m_pMaskedLine;
     } else {
-        m_bpp = 24;
-    }
-    if (!m_bpc || !m_nComponents) {
-        return 0;
-    }
-    FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width);
+      FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
+    }
+    return m_pLineBuf;
+  }
+  if (m_bpc * m_nComponents <= 8) {
+    if (m_bpc == 8) {
+      FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
+    } else {
+      int src_bit_pos = 0;
+      for (int col = 0; col < m_Width; col++) {
+        int color_index = 0;
+        for (FX_DWORD color = 0; color < m_nComponents; color++) {
+          int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc);
+          color_index |= data << (color * m_bpc);
+          src_bit_pos += m_bpc;
+        }
+        m_pLineBuf[col] = color_index;
+      }
+    }
+    if (m_bColorKey) {
+      uint8_t* pDestPixel = m_pMaskedLine;
+      const uint8_t* pSrcPixel = m_pLineBuf;
+      for (int col = 0; col < m_Width; col++) {
+        uint8_t index = *pSrcPixel++;
+        if (m_pPalette) {
+          *pDestPixel++ = FXARGB_B(m_pPalette[index]);
+          *pDestPixel++ = FXARGB_G(m_pPalette[index]);
+          *pDestPixel++ = FXARGB_R(m_pPalette[index]);
+        } else {
+          *pDestPixel++ = index;
+          *pDestPixel++ = index;
+          *pDestPixel++ = index;
+        }
+        *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin ||
+                       index > m_pCompData[0].m_ColorKeyMax)
+                          ? 0xff
+                          : 0;
+        pDestPixel++;
+      }
+      return m_pMaskedLine;
+    }
+    return m_pLineBuf;
+  }
+  if (m_bColorKey) {
+    if (m_nComponents == 3 && m_bpc == 8) {
+      uint8_t* alpha_channel = m_pMaskedLine + 3;
+      for (int col = 0; col < m_Width; col++) {
+        const uint8_t* pPixel = pSrcLine + col * 3;
+        alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyMin ||
+                                  pPixel[0] > m_pCompData[0].m_ColorKeyMax ||
+                                  pPixel[1] < m_pCompData[1].m_ColorKeyMin ||
+                                  pPixel[1] > m_pCompData[1].m_ColorKeyMax ||
+                                  pPixel[2] < m_pCompData[2].m_ColorKeyMin ||
+                                  pPixel[2] > m_pCompData[2].m_ColorKeyMax)
+                                     ? 0xff
+                                     : 0;
+      }
+    } else {
+      FXSYS_memset(m_pMaskedLine, 0xff, m_Pitch);
+    }
+  }
+  if (m_pColorSpace) {
+    TranslateScanline24bpp(m_pLineBuf, pSrcLine);
+    pSrcLine = m_pLineBuf;
+  }
+  if (m_bColorKey) {
+    const uint8_t* pSrcPixel = pSrcLine;
+    uint8_t* pDestPixel = m_pMaskedLine;
+    for (int col = 0; col < m_Width; col++) {
+      *pDestPixel++ = *pSrcPixel++;
+      *pDestPixel++ = *pSrcPixel++;
+      *pDestPixel++ = *pSrcPixel++;
+      pDestPixel++;
+    }
+    return m_pMaskedLine;
+  }
+  return pSrcLine;
+}
+FX_BOOL CPDF_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const {
+  if (m_pDecoder) {
+    return m_pDecoder->SkipToScanline(line, pPause);
+  }
+  return FALSE;
+}
+void CPDF_DIBSource::DownSampleScanline(int line,
+                                        uint8_t* dest_scan,
+                                        int dest_bpp,
+                                        int dest_width,
+                                        FX_BOOL bFlipX,
+                                        int clip_left,
+                                        int clip_width) const {
+  if (line < 0 || dest_scan == NULL || dest_bpp <= 0 || dest_width <= 0 ||
+      clip_left < 0 || clip_width <= 0) {
+    return;
+  }
+
+  FX_DWORD src_width = m_Width;
+  FX_SAFE_DWORD pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width, 1);
+  if (!pitch.IsValid()) {
+    return;
+  }
+
+  const uint8_t* pSrcLine = NULL;
+  if (m_pCachedBitmap) {
+    pSrcLine = m_pCachedBitmap->GetScanline(line);
+  } else if (m_pDecoder) {
+    pSrcLine = m_pDecoder->GetScanline(line);
+  } else {
+    FX_DWORD src_pitch = pitch.ValueOrDie();
+    pitch *= (line + 1);
     if (!pitch.IsValid()) {
-        return 0;
-    }
-    m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie());
-    if (m_pColorSpace && m_bStdCS) {
-        m_pColorSpace->EnableStdConversion(TRUE);
-    }
-    LoadPalette();
+      return;
+    }
+
+    if (m_pStreamAcc->GetSize() >= pitch.ValueOrDie()) {
+      pSrcLine = m_pStreamAcc->GetData() + line * src_pitch;
+    }
+  }
+  int orig_Bpp = m_bpc * m_nComponents / 8;
+  int dest_Bpp = dest_bpp / 8;
+  if (pSrcLine == NULL) {
+    FXSYS_memset(dest_scan, 0xff, dest_Bpp * clip_width);
+    return;
+  }
+
+  FX_SAFE_INT32 max_src_x = clip_left;
+  max_src_x += clip_width - 1;
+  max_src_x *= src_width;
+  max_src_x /= dest_width;
+  if (!max_src_x.IsValid()) {
+    return;
+  }
+
+  CFX_FixedBufGrow<uint8_t, 128> temp(orig_Bpp);
+  if (m_bpc * m_nComponents == 1) {
+    FX_DWORD set_argb = (FX_DWORD)-1, reset_argb = 0;
+    if (m_bImageMask) {
+      if (m_bDefaultDecode) {
+        set_argb = 0;
+        reset_argb = (FX_DWORD)-1;
+      }
+    } else if (m_bColorKey) {
+      reset_argb = m_pPalette ? m_pPalette[0] : 0xff000000;
+      set_argb = m_pPalette ? m_pPalette[1] : 0xffffffff;
+      if (m_pCompData[0].m_ColorKeyMin == 0) {
+        reset_argb = 0;
+      }
+      if (m_pCompData[0].m_ColorKeyMax == 1) {
+        set_argb = 0;
+      }
+      set_argb = FXARGB_TODIB(set_argb);
+      reset_argb = FXARGB_TODIB(reset_argb);
+      for (int i = 0; i < clip_width; i++) {
+        FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
+        if (bFlipX) {
+          src_x = src_width - src_x - 1;
+        }
+        src_x %= src_width;
+        if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) {
+          ((FX_DWORD*)dest_scan)[i] = set_argb;
+        } else {
+          ((FX_DWORD*)dest_scan)[i] = reset_argb;
+        }
+      }
+      return;
+    } else {
+      if (dest_Bpp == 1) {
+      } else if (m_pPalette) {
+        reset_argb = m_pPalette[0];
+        set_argb = m_pPalette[1];
+      }
+    }
+    for (int i = 0; i < clip_width; i++) {
+      FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
+      if (bFlipX) {
+        src_x = src_width - src_x - 1;
+      }
+      src_x %= src_width;
+      int dest_pos = i * dest_Bpp;
+      if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) {
+        if (dest_Bpp == 1) {
+          dest_scan[dest_pos] = (uint8_t)set_argb;
+        } else if (dest_Bpp == 3) {
+          dest_scan[dest_pos] = FXARGB_B(set_argb);
+          dest_scan[dest_pos + 1] = FXARGB_G(set_argb);
+          dest_scan[dest_pos + 2] = FXARGB_R(set_argb);
+        } else {
+          *(FX_DWORD*)(dest_scan + dest_pos) = set_argb;
+        }
+      } else {
+        if (dest_Bpp == 1) {
+          dest_scan[dest_pos] = (uint8_t)reset_argb;
+        } else if (dest_Bpp == 3) {
+          dest_scan[dest_pos] = FXARGB_B(reset_argb);
+          dest_scan[dest_pos + 1] = FXARGB_G(reset_argb);
+          dest_scan[dest_pos + 2] = FXARGB_R(reset_argb);
+        } else {
+          *(FX_DWORD*)(dest_scan + dest_pos) = reset_argb;
+        }
+      }
+    }
+    return;
+  } else if (m_bpc * m_nComponents <= 8) {
+    if (m_bpc < 8) {
+      int src_bit_pos = 0;
+      for (FX_DWORD col = 0; col < src_width; col++) {
+        int color_index = 0;
+        for (FX_DWORD color = 0; color < m_nComponents; color++) {
+          int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc);
+          color_index |= data << (color * m_bpc);
+          src_bit_pos += m_bpc;
+        }
+        m_pLineBuf[col] = color_index;
+      }
+      pSrcLine = m_pLineBuf;
+    }
     if (m_bColorKey) {
-        m_bpp = 32;
-        m_AlphaFlag = 2;
-        pitch = CalculatePitch32(m_bpp, m_Width);
-        if (!pitch.IsValid()) {
-            return 0;
+      for (int i = 0; i < clip_width; i++) {
+        FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
+        if (bFlipX) {
+          src_x = src_width - src_x - 1;
         }
-        m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie());
-    }
-    m_Pitch = pitch.ValueOrDie();
-    return 1;
-}
-int     CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc, const CPDF_Stream* pStream, FX_BOOL bHasMask,
-                                       CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources,
-                                       FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask)
-{
-    if (pStream == NULL) {
-        return 0;
-    }
-    m_pDocument = pDoc;
-    m_pDict = pStream->GetDict();
-    m_pStream = pStream;
-    m_bStdCS = bStdCS;
-    m_bHasMask = bHasMask;
-    m_Width = m_pDict->GetInteger(FX_BSTRC("Width"));
-    m_Height = m_pDict->GetInteger(FX_BSTRC("Height"));
-    if (m_Width <= 0 || m_Height <= 0 || m_Width > 0x01ffff || m_Height > 0x01ffff) {
-        return 0;
-    }
-    m_GroupFamily = GroupFamily;
-    m_bLoadMask = bLoadMask;
-    if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? NULL : pFormResources, pPageResources)) {
-        return 0;
-    }
-    if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) {
-        return 0;
-    }
-    FX_SAFE_DWORD src_pitch =
-        CalculatePitch8(m_bpc, m_nComponents, m_Width, m_Height);
-    if (!src_pitch.IsValid()) {
-        return 0;
-    }
-    m_pStreamAcc = new CPDF_StreamAcc;
-    m_pStreamAcc->LoadAllData(pStream, FALSE, src_pitch.ValueOrDie(), TRUE);
-    if (m_pStreamAcc->GetSize() == 0 || m_pStreamAcc->GetData() == NULL) {
-        return 0;
-    }
-    int ret = CreateDecoder();
-    if (ret != 1) {
-        if (!ret) {
-            return ret;
+        src_x %= src_width;
+        uint8_t* pDestPixel = dest_scan + i * 4;
+        uint8_t index = pSrcLine[src_x];
+        if (m_pPalette) {
+          *pDestPixel++ = FXARGB_B(m_pPalette[index]);
+          *pDestPixel++ = FXARGB_G(m_pPalette[index]);
+          *pDestPixel++ = FXARGB_R(m_pPalette[index]);
+        } else {
+          *pDestPixel++ = index;
+          *pDestPixel++ = index;
+          *pDestPixel++ = index;
         }
-        if (!ContinueToLoadMask()) {
-            return 0;
-        }
-        if (m_bHasMask) {
-            StratLoadMask();
-        }
-        return ret;
-    }
-    if (!ContinueToLoadMask()) {
-        return 0;
-    }
-    if (m_bHasMask) {
-        ret = StratLoadMask();
-    }
-    if (ret == 2) {
-        return ret;
-    }
-    if (m_pColorSpace && m_bStdCS) {
-        m_pColorSpace->EnableStdConversion(FALSE);
-    }
-    return ret;
-}
-int     CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause)
-{
-    FXCODEC_STATUS ret;
-    if (m_Status == 1) {
-        const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder();
-        if (decoder == FX_BSTRC("JPXDecode")) {
-            return 0;
-        }
-        ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module();
-        if (m_pJbig2Context == NULL) {
-            m_pJbig2Context = pJbig2Module->CreateJbig2Context();
-            if (m_pStreamAcc->GetImageParam()) {
-                CPDF_Stream* pGlobals = m_pStreamAcc->GetImageParam()->GetStream(FX_BSTRC("JBIG2Globals"));
-                if (pGlobals) {
-                    m_pGlobalStream = new CPDF_StreamAcc;
-                    m_pGlobalStream->LoadAllData(pGlobals, FALSE);
-                }
+        *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin ||
+                       index > m_pCompData[0].m_ColorKeyMax)
+                          ? 0xff
+                          : 0;
+      }
+      return;
+    }
+    for (int i = 0; i < clip_width; i++) {
+      FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
+      if (bFlipX) {
+        src_x = src_width - src_x - 1;
+      }
+      src_x %= src_width;
+      uint8_t index = pSrcLine[src_x];
+      if (dest_Bpp == 1) {
+        dest_scan[i] = index;
+      } else {
+        int dest_pos = i * dest_Bpp;
+        FX_ARGB argb = m_pPalette[index];
+        dest_scan[dest_pos] = FXARGB_B(argb);
+        dest_scan[dest_pos + 1] = FXARGB_G(argb);
+        dest_scan[dest_pos + 2] = FXARGB_R(argb);
+      }
+    }
+    return;
+  } else {
+    int last_src_x = -1;
+    FX_ARGB last_argb;
+    FX_FLOAT orig_Not8Bpp = (FX_FLOAT)m_bpc * (FX_FLOAT)m_nComponents / 8.0f;
+    FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1);
+    for (int i = 0; i < clip_width; i++) {
+      int dest_x = clip_left + i;
+      FX_DWORD src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) *
+                       (int64_t)src_width / dest_width;
+      src_x %= src_width;
+      const uint8_t* pSrcPixel = NULL;
+      if (m_bpc % 8 == 0) {
+        pSrcPixel = pSrcLine + src_x * orig_Bpp;
+      } else {
+        pSrcPixel = pSrcLine + (int)(src_x * orig_Not8Bpp);
+      }
+      uint8_t* pDestPixel = dest_scan + i * dest_Bpp;
+      FX_ARGB argb;
+      if (src_x == last_src_x) {
+        argb = last_argb;
+      } else {
+        if (m_pColorSpace) {
+          uint8_t color[4];
+          if (!m_bDefaultDecode) {
+            for (int i = 0; i < m_nComponents; i++) {
+              int color_value =
+                  (int)((m_pCompData[i].m_DecodeMin +
+                         m_pCompData[i].m_DecodeStep * (FX_FLOAT)pSrcPixel[i]) *
+                            255.0f +
+                        0.5f);
+              temp[i] =
+                  color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value);
             }
-            ret = pJbig2Module->StartDecode(m_pJbig2Context, m_Width, m_Height, m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(),
-                                            m_pGlobalStream ? m_pGlobalStream->GetData() : NULL, m_pGlobalStream ? m_pGlobalStream->GetSize() : 0, m_pCachedBitmap->GetBuffer(),
-                                            m_pCachedBitmap->GetPitch(), pPause);
-            if (ret < 0) {
-                m_pCachedBitmap.reset();
-                delete m_pGlobalStream;
-                m_pGlobalStream = NULL;
-                pJbig2Module->DestroyJbig2Context(m_pJbig2Context);
-                m_pJbig2Context = NULL;
-                return 0;
+            m_pColorSpace->TranslateImageLine(
+                color, temp, 1, 0, 0, m_bLoadMask &&
+                                          m_GroupFamily == PDFCS_DEVICECMYK &&
+                                          m_Family == PDFCS_DEVICECMYK);
+          } else {
+            if (m_bpc < 8) {
+              int src_bit_pos = 0;
+              if (src_x % 2) {
+                src_bit_pos = 4;
+              }
+              for (FX_DWORD i = 0; i < m_nComponents; i++) {
+                temp[i] = (uint8_t)(_GetBits8(pSrcPixel, src_bit_pos, m_bpc) *
+                                    unit_To8Bpc);
+                src_bit_pos += m_bpc;
+              }
+              m_pColorSpace->TranslateImageLine(
+                  color, temp, 1, 0, 0, m_bLoadMask &&
+                                            m_GroupFamily == PDFCS_DEVICECMYK &&
+                                            m_Family == PDFCS_DEVICECMYK);
+            } else {
+              m_pColorSpace->TranslateImageLine(
+                  color, pSrcPixel, 1, 0, 0,
+                  m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK &&
+                      m_Family == PDFCS_DEVICECMYK);
             }
-            if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
-                return 2;
-            }
-            int ret1 = 1;
-            if (m_bHasMask) {
-                ret1 = ContinueLoadMaskDIB(pPause);
-                m_Status = 2;
-            }
-            if (ret1 == 2) {
-                return ret1;
-            }
-            if (m_pColorSpace && m_bStdCS) {
-                m_pColorSpace->EnableStdConversion(FALSE);
-            }
-            return ret1;
-        }
-        FXCODEC_STATUS ret = pJbig2Module->ContinueDecode(m_pJbig2Context, pPause);
-        if (ret < 0) {
-            m_pCachedBitmap.reset();
-            delete m_pGlobalStream;
-            m_pGlobalStream = NULL;
-            pJbig2Module->DestroyJbig2Context(m_pJbig2Context);
-            m_pJbig2Context = NULL;
-            return 0;
-        }
-        if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
-            return 2;
-        }
-        int ret1 = 1;
-        if (m_bHasMask) {
-            ret1 = ContinueLoadMaskDIB(pPause);
-            m_Status = 2;
-        }
-        if (ret1 == 2) {
-            return ret1;
-        }
-        if (m_pColorSpace && m_bStdCS) {
-            m_pColorSpace->EnableStdConversion(FALSE);
-        }
-        return ret1;
-    }
-    if (m_Status == 2) {
-        return ContinueLoadMaskDIB(pPause);
-    }
-    return 0;
-}
-FX_BOOL CPDF_DIBSource::LoadColorInfo(CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources)
-{
-    m_bpc_orig = m_pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
-    if (m_pDict->GetInteger("ImageMask")) {
-        m_bImageMask = TRUE;
-    }
-    if (m_bImageMask || !m_pDict->KeyExist(FX_BSTRC("ColorSpace"))) {
-        if (!m_bImageMask) {
-            CPDF_Object* pFilter = m_pDict->GetElementValue(FX_BSTRC("Filter"));
-            if (pFilter) {
-                CFX_ByteString filter;
-                if (pFilter->GetType() == PDFOBJ_NAME) {
-                    filter = pFilter->GetString();
-                    if (filter == FX_BSTRC("JPXDecode")) {
-                        m_bDoBpcCheck = FALSE;
-                        return TRUE;
-                    }
-                } else if (pFilter->GetType() == PDFOBJ_ARRAY) {
-                    CPDF_Array* pArray = (CPDF_Array*)pFilter;
-                    if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("JPXDecode")) {
-                        m_bDoBpcCheck = FALSE;
-                        return TRUE;
-                    }
-                }
-            }
-        }
-        m_bImageMask = TRUE;
-        m_bpc = m_nComponents = 1;
-        CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode"));
-        m_bDefaultDecode = pDecode == NULL || pDecode->GetInteger(0) == 0;
-        return TRUE;
-    }
-    CPDF_Object* pCSObj = m_pDict->GetElementValue(FX_BSTRC("ColorSpace"));
-    if (pCSObj == NULL) {
-        return FALSE;
-    }
-    CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData();
-    if (pFormResources) {
-        m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pFormResources);
-    }
-    if (m_pColorSpace == NULL) {
-        m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pPageResources);
-    }
-    if (m_pColorSpace == NULL) {
-        return FALSE;
-    }
-    m_Family = m_pColorSpace->GetFamily();
-    m_nComponents = m_pColorSpace->CountComponents();
-    if (m_Family == PDFCS_ICCBASED && pCSObj->GetType() == PDFOBJ_NAME) {
-        CFX_ByteString cs = pCSObj->GetString();
-        if (cs == FX_BSTRC("DeviceGray")) {
-            m_nComponents = 1;
-        } else if (cs == FX_BSTRC("DeviceRGB")) {
-            m_nComponents = 3;
-        } else if (cs == FX_BSTRC("DeviceCMYK")) {
-            m_nComponents = 4;
-        }
-    }
-    ValidateDictParam();
-    m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey);
-    if (m_pCompData == NULL) {
-        return FALSE;
-    }
-    return TRUE;
-}
-DIB_COMP_DATA* CPDF_DIBSource::GetDecodeAndMaskArray(FX_BOOL& bDefaultDecode, FX_BOOL& bColorKey)
-{
-    if (m_pColorSpace == NULL) {
-        return NULL;
-    }
-    DIB_COMP_DATA* pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents);
-    int max_data = (1 << m_bpc) - 1;
-    CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode"));
-    if (pDecode) {
-        for (FX_DWORD i = 0; i < m_nComponents; i ++) {
-            pCompData[i].m_DecodeMin = pDecode->GetNumber(i * 2);
-            FX_FLOAT max = pDecode->GetNumber(i * 2 + 1);
-            pCompData[i].m_DecodeStep = (max - pCompData[i].m_DecodeMin) / max_data;
-            FX_FLOAT def_value, def_min, def_max;
-            m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max);
-            if (m_Family == PDFCS_INDEXED) {
-                def_max = (FX_FLOAT)max_data;
-            }
-            if (def_min != pCompData[i].m_DecodeMin || def_max != max) {
-                bDefaultDecode = FALSE;
-            }
-        }
-    } else {
-        for (FX_DWORD i = 0; i < m_nComponents; i ++) {
-            FX_FLOAT def_value;
-            m_pColorSpace->GetDefaultValue(i, def_value, pCompData[i].m_DecodeMin, pCompData[i].m_DecodeStep);
-            if (m_Family == PDFCS_INDEXED) {
-                pCompData[i].m_DecodeStep = (FX_FLOAT)max_data;
-            }
-            pCompData[i].m_DecodeStep = (pCompData[i].m_DecodeStep - pCompData[i].m_DecodeMin) / max_data;
-        }
-    }
-    if (!m_pDict->KeyExist(FX_BSTRC("SMask"))) {
-        CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask"));
-        if (pMask == NULL) {
-            return pCompData;
-        }
-        if (pMask->GetType() == PDFOBJ_ARRAY) {
-            CPDF_Array* pArray = (CPDF_Array*)pMask;
-            if (pArray->GetCount() >= m_nComponents * 2) {
-                for (FX_DWORD i = 0; i < m_nComponents; i++) {
-                    int min_num = pArray->GetInteger(i * 2);
-                    int max_num = pArray->GetInteger(i * 2 + 1);
-                    pCompData[i].m_ColorKeyMin = FX_MAX(min_num, 0);
-                    pCompData[i].m_ColorKeyMax = FX_MIN(max_num, max_data);
-                }
-            }
-            bColorKey = TRUE;
-        }
-    }
-    return pCompData;
-}
-ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(const uint8_t* src_buf, FX_DWORD src_size, int width, int height,
-        const CPDF_Dictionary* pParams);
-ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(const uint8_t* src_buf, FX_DWORD src_size, int width, int height,
-        int nComps, int bpc, const CPDF_Dictionary* pParams);
-int CPDF_DIBSource::CreateDecoder()
-{
-    const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder();
-    if (decoder.IsEmpty()) {
-        return 1;
-    }
-    if (m_bDoBpcCheck && m_bpc == 0) {
-        return 0;
-    }
-    const uint8_t* src_data = m_pStreamAcc->GetData();
-    FX_DWORD src_size = m_pStreamAcc->GetSize();
-    const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam();
-    if (decoder == FX_BSTRC("CCITTFaxDecode")) {
-        m_pDecoder = FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, m_Height, pParams);
-    } else if (decoder == FX_BSTRC("DCTDecode")) {
-        m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
-            src_data, src_size, m_Width, m_Height, m_nComponents,
-            pParams ? pParams->GetInteger("ColorTransform", 1) : 1);
-        if (!m_pDecoder) {
-            FX_BOOL bTransform = FALSE;
-            int comps, bpc;
-            ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule();
-            if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, comps, bpc, bTransform)) {
-                if (m_nComponents != comps) {
-                    FX_Free(m_pCompData);
-                    m_nComponents = comps;
-                    if (m_Family == PDFCS_LAB && m_nComponents != 3) {
-                        m_pCompData = NULL;
-                        return 0;
-                    }
-                    m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey);
-                    if (m_pCompData == NULL) {
-                        return 0;
-                    }
-                }
-                m_bpc = bpc;
-                m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(src_data, src_size, m_Width, m_Height,
-                             m_nComponents, bTransform);
-            }
-        }
-    } else if (decoder == FX_BSTRC("FlateDecode")) {
-        m_pDecoder = FPDFAPI_CreateFlateDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams);
-    } else if (decoder == FX_BSTRC("JPXDecode")) {
-        LoadJpxBitmap();
-        return m_pCachedBitmap ? 1 : 0;
-    } else if (decoder == FX_BSTRC("JBIG2Decode")) {
-        m_pCachedBitmap.reset(new CFX_DIBitmap);
-        if (!m_pCachedBitmap->Create(m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) {
-            m_pCachedBitmap.reset();
-            return 0;
-        }
-        m_Status = 1;
-        return 2;
-    } else if (decoder == FX_BSTRC("RunLengthDecode")) {
-        m_pDecoder = CPDF_ModuleMgr::Get()->GetCodecModule()->GetBasicModule()->CreateRunLengthDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc);
-    }
-    if (!m_pDecoder)
-        return 0;
-
-    FX_SAFE_DWORD requested_pitch =
-        CalculatePitch8(m_bpc, m_nComponents, m_Width, 1);
-    if (!requested_pitch.IsValid()) {
-        return 0;
-    }
-    FX_SAFE_DWORD provided_pitch = CalculatePitch8(m_pDecoder->GetBPC(),
-                                                   m_pDecoder->CountComps(),
-                                                   m_pDecoder->GetWidth(),
-                                                   1);
-    if (!provided_pitch.IsValid()) {
-        return 0;
-    }
-    if (provided_pitch.ValueOrDie() < requested_pitch.ValueOrDie()) {
-        return 0;
-    }
-    return 1;
-}
-void CPDF_DIBSource::LoadJpxBitmap()
-{
-    ICodec_JpxModule* pJpxModule = CPDF_ModuleMgr::Get()->GetJpxModule();
-    if (!pJpxModule)
-        return;
-
-    nonstd::unique_ptr<JpxBitMapContext> context(
-        new JpxBitMapContext(pJpxModule));
-    context->set_context(pJpxModule->CreateDecoder(m_pStreamAcc->GetData(),
-                                                   m_pStreamAcc->GetSize(),
-                                                   m_pColorSpace != nullptr));
-    if (!context->context())
-        return;
-
-    FX_DWORD width = 0;
-    FX_DWORD height = 0;
-    FX_DWORD codestream_nComps = 0;
-    FX_DWORD image_nComps = 0;
-    pJpxModule->GetImageInfo(context->context(), width, height,
-                             codestream_nComps, image_nComps);
-    if ((int)width < m_Width || (int)height < m_Height)
-        return;
-
-    int output_nComps;
-    FX_BOOL bTranslateColor;
-    FX_BOOL bSwapRGB = FALSE;
-    if (m_pColorSpace) {
-        if (codestream_nComps != (FX_DWORD)m_pColorSpace->CountComponents())
-            return;
-        output_nComps = codestream_nComps;
-        bTranslateColor = FALSE;
-        if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) {
-            bSwapRGB = TRUE;
-            m_pColorSpace = nullptr;
-        }
-    } else {
-        bTranslateColor = TRUE;
-        if (image_nComps) {
-            output_nComps = image_nComps;
+          }
+          argb = FXARGB_MAKE(0xff, color[2], color[1], color[0]);
         } else {
-            output_nComps = codestream_nComps;
-        }
-        if (output_nComps == 3) {
-            bSwapRGB = TRUE;
-        } else if (output_nComps == 4) {
-            m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK);
-            bTranslateColor = FALSE;
-        }
-        m_nComponents = output_nComps;
-    }
-    FXDIB_Format format;
-    if (output_nComps == 1) {
-        format = FXDIB_8bppRgb;
-    } else if (output_nComps <= 3) {
-        format = FXDIB_Rgb;
-    } else if (output_nComps == 4) {
-        format = FXDIB_Rgb32;
-    } else {
-        width = (width * output_nComps + 2) / 3;
-        format = FXDIB_Rgb;
-    }
-    m_pCachedBitmap.reset(new CFX_DIBitmap);
-    if (!m_pCachedBitmap->Create(width, height, format)) {
-        m_pCachedBitmap.reset();
-        return;
-    }
-    m_pCachedBitmap->Clear(0xFFFFFFFF);
-    context->set_output_offsets(FX_Alloc(uint8_t, output_nComps));
-    for (int i = 0; i < output_nComps; ++i)
-        context->output_offsets()[i] = i;
-    if (bSwapRGB) {
-        context->output_offsets()[0] = 2;
-        context->output_offsets()[2] = 0;
-    }
-    if (!pJpxModule->Decode(context->context(),
-                            m_pCachedBitmap->GetBuffer(),
-                            m_pCachedBitmap->GetPitch(),
-                            bTranslateColor,
-                            context->output_offsets())) {
-        m_pCachedBitmap.reset();
-        return;
-    }
-    if (m_pColorSpace &&
-        m_pColorSpace->GetFamily() == PDFCS_INDEXED &&
-        m_bpc < 8) {
-        int scale = 8 - m_bpc;
-        for (FX_DWORD row = 0; row < height; ++row) {
-            uint8_t* scanline = (uint8_t*)m_pCachedBitmap->GetScanline(row);
-            for (FX_DWORD col = 0; col < width; ++col) {
-                *scanline = (*scanline) >> scale;
-                ++scanline;
-            }
-        }
-    }
-    m_bpc = 8;
-}
-CPDF_DIBSource* CPDF_DIBSource::LoadMask(FX_DWORD& MatteColor)
-{
-    MatteColor = 0xffffffff;
-    CPDF_Stream* pSoftMask = m_pDict->GetStream(FX_BSTRC("SMask"));
-    if (pSoftMask) {
-        CPDF_Array* pMatte = pSoftMask->GetDict()->GetArray(FX_BSTRC("Matte"));
-        if (pMatte != NULL && m_pColorSpace && (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) {
-            FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents);
-            for (FX_DWORD i = 0; i < m_nComponents; i ++) {
-                pColor[i] = pMatte->GetFloat(i);
-            }
-            FX_FLOAT R, G, B;
-            m_pColorSpace->GetRGB(pColor, R, G, B);
-            FX_Free(pColor);
-            MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255));
-        }
-        return LoadMaskDIB(pSoftMask);
-    }
-    CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask"));
-    if (pMask == NULL) {
-        return NULL;
-    }
-    if (pMask->GetType() == PDFOBJ_STREAM) {
-        return LoadMaskDIB((CPDF_Stream*)pMask);
-    }
-    return NULL;
-}
-int     CPDF_DIBSource::StratLoadMask()
-{
-    m_MatteColor = 0xffffffff;
-    m_pMaskStream = m_pDict->GetStream(FX_BSTRC("SMask"));
-    if (m_pMaskStream) {
-        CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArray(FX_BSTRC("Matte"));
-        if (pMatte != NULL && m_pColorSpace && (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) {
-            FX_FLOAT R, G, B;
-            FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents);
-            for (FX_DWORD i = 0; i < m_nComponents; i ++) {
-                pColor[i] = pMatte->GetFloat(i);
-            }
-            m_pColorSpace->GetRGB(pColor, R, G, B);
-            FX_Free(pColor);
-            m_MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255));
-        }
-        return StartLoadMaskDIB();
-    }
-    m_pMaskStream = m_pDict->GetElementValue(FX_BSTRC("Mask"));
-    if (m_pMaskStream == NULL) {
-        return 1;
-    }
-    if (m_pMaskStream->GetType() == PDFOBJ_STREAM) {
-        return StartLoadMaskDIB();
-    }
-    return 1;
-}
-int     CPDF_DIBSource::ContinueLoadMaskDIB(IFX_Pause* pPause)
-{
-    if (m_pMask == NULL) {
-        return 1;
-    }
-    int ret = m_pMask->ContinueLoadDIBSource(pPause);
-    if (ret == 2) {
-        return ret;
-    }
-    if (m_pColorSpace && m_bStdCS) {
-        m_pColorSpace->EnableStdConversion(FALSE);
-    }
-    if (!ret) {
-        delete m_pMask;
-        m_pMask = NULL;
-        return ret;
-    }
-    return 1;
-}
-CPDF_DIBSource* CPDF_DIBSource::DetachMask()
-{
-    CPDF_DIBSource* pDIBSource = m_pMask;
-    m_pMask = NULL;
-    return pDIBSource;
-}
-CPDF_DIBSource* CPDF_DIBSource::LoadMaskDIB(CPDF_Stream* pMask)
-{
-    CPDF_DIBSource* pMaskSource = new CPDF_DIBSource;
-    if (!pMaskSource->Load(m_pDocument, pMask, NULL, NULL, NULL, NULL, TRUE)) {
-        delete pMaskSource;
-        return NULL;
-    }
-    return pMaskSource;
-}
-int CPDF_DIBSource::StartLoadMaskDIB()
-{
-    m_pMask = new CPDF_DIBSource;
-    int ret = m_pMask->StartLoadDIBSource(m_pDocument, (CPDF_Stream*)m_pMaskStream, FALSE, NULL, NULL, TRUE);
-    if (ret == 2) {
-        if (m_Status == 0) {
-            m_Status = 2;
-        }
-        return 2;
-    }
-    if (!ret) {
-        delete m_pMask;
-        m_pMask = NULL;
-        return 1;
-    }
-    return 1;
-}
-void CPDF_DIBSource::LoadPalette()
-{
-    if (m_bpc == 0) {
-        return;
-    }
-    if (m_bpc * m_nComponents > 8) {
-        return;
-    }
-    if (m_pColorSpace == NULL) {
-        return;
-    }
-    if (m_bpc * m_nComponents == 1) {
-        if (m_bDefaultDecode && (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) {
-            return;
-        }
-        if (m_pColorSpace->CountComponents() > 3) {
-            return;
-        }
-        FX_FLOAT color_values[3];
-        color_values[0] = m_pCompData[0].m_DecodeMin;
-        color_values[1] = color_values[2] = color_values[0];
-        FX_FLOAT R=0.0f, G=0.0f, B=0.0f;
-        m_pColorSpace->GetRGB(color_values, R, G, B);
-        FX_ARGB argb0 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255));
-        color_values[0] += m_pCompData[0].m_DecodeStep;
-        color_values[1] += m_pCompData[0].m_DecodeStep;
-        color_values[2] += m_pCompData[0].m_DecodeStep;
-        m_pColorSpace->GetRGB(color_values, R, G, B);
-        FX_ARGB argb1 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255));
-        if (argb0 != 0xFF000000 || argb1 != 0xFFFFFFFF) {
-            SetPaletteArgb(0, argb0);
-            SetPaletteArgb(1, argb1);
-        }
-        return;
-    }
-    if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && m_bpc == 8 && m_bDefaultDecode) {
-    } else {
-        int palette_count = 1 << (m_bpc * m_nComponents);
-        CFX_FixedBufGrow<FX_FLOAT, 16> color_values(m_nComponents);
-        FX_FLOAT* color_value = color_values;
-        for (int i = 0; i < palette_count; i ++) {
-            int color_data = i;
-            for (FX_DWORD j = 0; j < m_nComponents; j ++) {
-                int encoded_component = color_data % (1 << m_bpc);
-                color_data /= 1 << m_bpc;
-                color_value[j] = m_pCompData[j].m_DecodeMin + m_pCompData[j].m_DecodeStep * encoded_component;
-            }
-            FX_FLOAT R = 0, G = 0, B = 0;
-            if (m_nComponents == 1 && m_Family == PDFCS_ICCBASED && m_pColorSpace->CountComponents() > 1) {
-                int nComponents = m_pColorSpace->CountComponents();
-                FX_FLOAT* temp_buf = FX_Alloc(FX_FLOAT, nComponents);
-                for (int i = 0; i < nComponents; i++) {
-                    temp_buf[i] = *color_value;
-                }
-                m_pColorSpace->GetRGB(temp_buf, R, G, B);
-                FX_Free(temp_buf);
-            } else {
-                m_pColorSpace->GetRGB(color_value, R, G, B);
-            }
-            SetPaletteArgb(i, ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255)));
-        }
-    }
-}
-void CPDF_DIBSource::ValidateDictParam()
-{
-    m_bpc = m_bpc_orig;
-    CPDF_Object * pFilter = m_pDict->GetElementValue(FX_BSTRC("Filter"));
-    if (pFilter) {
-        if (pFilter->GetType() == PDFOBJ_NAME) {
-            CFX_ByteString filter = pFilter->GetString();
-            if (filter == FX_BSTRC("CCITTFaxDecode") || filter == FX_BSTRC("JBIG2Decode")) {
-                m_bpc = 1;
-                m_nComponents = 1;
-            }
-            if (filter == FX_BSTRC("RunLengthDecode") || filter == FX_BSTRC("DCTDecode")) {
-                m_bpc = 8;
-            }
-        } else if (pFilter->GetType() == PDFOBJ_ARRAY) {
-            CPDF_Array *pArray = (CPDF_Array *)pFilter;
-            if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("CCITTFaxDecode") ||
-                    pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("JBIG2Decode")) {
-                m_bpc = 1;
-                m_nComponents = 1;
-            }
-            if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("DCTDecode")) {
-                // Previously, pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("RunLengthDecode") was checked in the "if" statement as well,
-                // but too many documents don't conform to it.
-                m_bpc = 8;
-            }
-        }
-    }
-    if (m_bpc != 1 && m_bpc != 2 && m_bpc != 4 && m_bpc != 8 && m_bpc != 16) {
-        m_bpc = 0;
-    }
-}
-#define NORMALCOLOR_MAX(color, max) (color) > (max) ? (max) : (color) < 0 ? 0 : (color);
-void CPDF_DIBSource::TranslateScanline24bpp(uint8_t* dest_scan, const uint8_t* src_scan) const
-{
-    if (m_bpc == 0) {
-        return;
-    }
-    int max_data = (1 << m_bpc) - 1;
-    if (m_bDefaultDecode) {
-        if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) {
-            const uint8_t* src_pos = src_scan;
-            switch (m_bpc) {
-                case 16:
-                    for (int col = 0; col < m_Width; col ++) {
-                        *dest_scan++ = src_pos[4];
-                        *dest_scan++ = src_pos[2];
-                        *dest_scan++ = *src_pos;
-                        src_pos += 6;
-                    }
-                    break;
-                case 8:
-                    for (int column = 0; column < m_Width; column ++) {
-                        *dest_scan++ = src_pos[2];
-                        *dest_scan++ = src_pos[1];
-                        *dest_scan++ = *src_pos;
-                        src_pos += 3;
-                    }
-                    break;
-                default:
-                    int src_bit_pos = 0;
-                    int dest_byte_pos = 0;
-                    for (int column = 0; column < m_Width; column ++) {
-                        int R = _GetBits8(src_scan, src_bit_pos, m_bpc);
-                        src_bit_pos += m_bpc;
-                        int G = _GetBits8(src_scan, src_bit_pos, m_bpc);
-                        src_bit_pos += m_bpc;
-                        int B = _GetBits8(src_scan, src_bit_pos, m_bpc);
-                        src_bit_pos += m_bpc;
-                        R = NORMALCOLOR_MAX(R, max_data);
-                        G = NORMALCOLOR_MAX(G, max_data);
-                        B = NORMALCOLOR_MAX(B, max_data);
-                        dest_scan[dest_byte_pos] = B * 255 / max_data;
-                        dest_scan[dest_byte_pos + 1] = G * 255 / max_data;
-                        dest_scan[dest_byte_pos + 2] = R * 255 / max_data;
-                        dest_byte_pos += 3;
-                    }
-                    break;
-            }
-            return;
-        }
-        if (m_bpc == 8) {
-            if (m_nComponents == m_pColorSpace->CountComponents())
-                m_pColorSpace->TranslateImageLine(dest_scan, src_scan, m_Width, m_Width, m_Height,
-                                                  m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
-            return;
-        }
-    }
-    CFX_FixedBufGrow<FX_FLOAT, 16> color_values1(m_nComponents);
-    FX_FLOAT* color_values = color_values1;
-    FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
-    if (m_bpc == 8) {
-        int src_byte_pos = 0;
-        int dest_byte_pos = 0;
-        for (int column = 0; column < m_Width; column ++) {
-            for (FX_DWORD color = 0; color < m_nComponents; color ++) {
-                int data = src_scan[src_byte_pos ++];
-                color_values[color] = m_pCompData[color].m_DecodeMin +
-                                      m_pCompData[color].m_DecodeStep * data;
-            }
-            if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK) {
-                FX_FLOAT k = 1.0f - color_values[3];
-                R = (1.0f - color_values[0]) * k;
-                G = (1.0f - color_values[1]) * k;
-                B = (1.0f - color_values[2]) * k;
-            } else {
-                m_pColorSpace->GetRGB(color_values, R, G, B);
-            }
-            R = NORMALCOLOR_MAX(R, 1);
-            G = NORMALCOLOR_MAX(G, 1);
-            B = NORMALCOLOR_MAX(B, 1);
-            dest_scan[dest_byte_pos] = (int32_t)(B * 255);
-            dest_scan[dest_byte_pos + 1] = (int32_t)(G * 255);
-            dest_scan[dest_byte_pos + 2] = (int32_t)(R * 255);
-            dest_byte_pos += 3;
-        }
-    } else {
-        int src_bit_pos = 0;
-        int dest_byte_pos = 0;
-        for (int column = 0; column < m_Width; column ++) {
-            for (FX_DWORD color = 0; color < m_nComponents; color ++) {
-                int data = _GetBits8(src_scan, src_bit_pos, m_bpc);
-                color_values[color] = m_pCompData[color].m_DecodeMin +
-                                      m_pCompData[color].m_DecodeStep * data;
-                src_bit_pos += m_bpc;
-            }
-            if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK) {
-                FX_FLOAT k = 1.0f - color_values[3];
-                R = (1.0f - color_values[0]) * k;
-                G = (1.0f - color_values[1]) * k;
-                B = (1.0f - color_values[2]) * k;
-            } else {
-                m_pColorSpace->GetRGB(color_values, R, G, B);
-            }
-            R = NORMALCOLOR_MAX(R, 1);
-            G = NORMALCOLOR_MAX(G, 1);
-            B = NORMALCOLOR_MAX(B, 1);
-            dest_scan[dest_byte_pos] = (int32_t)(B * 255);
-            dest_scan[dest_byte_pos + 1] = (int32_t)(G * 255);
-            dest_scan[dest_byte_pos + 2] = (int32_t)(R * 255);
-            dest_byte_pos += 3;
-        }
-    }
-}
-uint8_t* CPDF_DIBSource::GetBuffer() const
-{
-    if (m_pCachedBitmap) {
-        return m_pCachedBitmap->GetBuffer();
-    }
-    return NULL;
-}
-const uint8_t* CPDF_DIBSource::GetScanline(int line) const
-{
-    if (m_bpc == 0) {
-        return NULL;
-    }
-    FX_SAFE_DWORD src_pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width, 1);
-    if (!src_pitch.IsValid())
-        return NULL;
-    FX_DWORD src_pitch_value = src_pitch.ValueOrDie();
-    const uint8_t* pSrcLine = NULL;
-    if (m_pCachedBitmap) {
-        if (line >= m_pCachedBitmap->GetHeight()) {
-            line = m_pCachedBitmap->GetHeight() - 1;
-        }
-        pSrcLine = m_pCachedBitmap->GetScanline(line);
-    } else if (m_pDecoder) {
-        pSrcLine = m_pDecoder->GetScanline(line);
-    } else {
-        if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch_value) {
-            pSrcLine = m_pStreamAcc->GetData() + line * src_pitch_value;
-        }
-    }
-    if (pSrcLine == NULL) {
-        uint8_t* pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf;
-        FXSYS_memset(pLineBuf, 0xff, m_Pitch);
-        return pLineBuf;
-    }
-    if (m_bpc * m_nComponents == 1) {
-        if (m_bImageMask && m_bDefaultDecode) {
-            for (FX_DWORD i = 0; i < src_pitch_value; i++) {
-                m_pLineBuf[i] = ~pSrcLine[i];
-            }
-        } else if (m_bColorKey) {
-            FX_DWORD reset_argb, set_argb;
-            reset_argb = m_pPalette ? m_pPalette[0] : 0xff000000;
-            set_argb = m_pPalette ? m_pPalette[1] : 0xffffffff;
-            if (m_pCompData[0].m_ColorKeyMin == 0) {
-                reset_argb = 0;
-            }
-            if (m_pCompData[0].m_ColorKeyMax == 1) {
-                set_argb = 0;
-            }
-            set_argb = FXARGB_TODIB(set_argb);
-            reset_argb = FXARGB_TODIB(reset_argb);
-            FX_DWORD* dest_scan = (FX_DWORD*)m_pMaskedLine;
-            for (int col = 0; col < m_Width; col ++) {
-                if (pSrcLine[col / 8] & (1 << (7 - col % 8))) {
-                    *dest_scan = set_argb;
-                } else {
-                    *dest_scan = reset_argb;
-                }
-                dest_scan ++;
-            }
-            return m_pMaskedLine;
-        } else {
-            FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
-        }
-        return m_pLineBuf;
-    }
-    if (m_bpc * m_nComponents <= 8) {
-        if (m_bpc == 8) {
-            FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
-        } else {
-            int src_bit_pos = 0;
-            for (int col = 0; col < m_Width; col ++) {
-                int color_index = 0;
-                for (FX_DWORD color = 0; color < m_nComponents; color ++) {
-                    int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc);
-                    color_index |= data << (color * m_bpc);
-                    src_bit_pos += m_bpc;
-                }
-                m_pLineBuf[col] = color_index;
-            }
+          argb = FXARGB_MAKE(0xff, pSrcPixel[2], pSrcPixel[1], pSrcPixel[0]);
         }
         if (m_bColorKey) {
-            uint8_t* pDestPixel = m_pMaskedLine;
-            const uint8_t* pSrcPixel = m_pLineBuf;
-            for (int col = 0; col < m_Width; col ++) {
-                uint8_t index = *pSrcPixel++;
-                if (m_pPalette) {
-                    *pDestPixel++ = FXARGB_B(m_pPalette[index]);
-                    *pDestPixel++ = FXARGB_G(m_pPalette[index]);
-                    *pDestPixel++ = FXARGB_R(m_pPalette[index]);
-                } else {
-                    *pDestPixel++ = index;
-                    *pDestPixel++ = index;
-                    *pDestPixel++ = index;
-                }
-                *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || index > m_pCompData[0].m_ColorKeyMax) ? 0xff : 0;
-                pDestPixel ++ ;
-            }
-            return m_pMaskedLine;
+          int alpha = 0xff;
+          if (m_nComponents == 3 && m_bpc == 8) {
+            alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin ||
+                     pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax ||
+                     pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin ||
+                     pSrcPixel[1] > m_pCompData[1].m_ColorKeyMax ||
+                     pSrcPixel[2] < m_pCompData[2].m_ColorKeyMin ||
+                     pSrcPixel[2] > m_pCompData[2].m_ColorKeyMax)
+                        ? 0xff
+                        : 0;
+          }
+          argb &= 0xffffff;
+          argb |= alpha << 24;
         }
-        return m_pLineBuf;
-    }
-    if (m_bColorKey) {
-        if (m_nComponents == 3 && m_bpc == 8) {
-            uint8_t* alpha_channel = m_pMaskedLine + 3;
-            for (int col = 0; col < m_Width; col ++) {
-                const uint8_t* pPixel = pSrcLine + col * 3;
-                alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyMin || pPixel[0] > m_pCompData[0].m_ColorKeyMax ||
-                                          pPixel[1] < m_pCompData[1].m_ColorKeyMin || pPixel[1] > m_pCompData[1].m_ColorKeyMax ||
-                                          pPixel[2] < m_pCompData[2].m_ColorKeyMin || pPixel[2] > m_pCompData[2].m_ColorKeyMax) ? 0xff : 0;
-            }
-        } else {
-            FXSYS_memset(m_pMaskedLine, 0xff, m_Pitch);
-        }
-    }
-    if (m_pColorSpace) {
-        TranslateScanline24bpp(m_pLineBuf, pSrcLine);
-        pSrcLine = m_pLineBuf;
-    }
-    if (m_bColorKey) {
-        const uint8_t* pSrcPixel = pSrcLine;
-        uint8_t* pDestPixel = m_pMaskedLine;
-        for (int col = 0; col < m_Width; col ++) {
-            *pDestPixel++ = *pSrcPixel++;
-            *pDestPixel++ = *pSrcPixel++;
-            *pDestPixel++ = *pSrcPixel++;
-            pDestPixel ++;
-        }
-        return m_pMaskedLine;
-    }
-    return pSrcLine;
-}
-FX_BOOL CPDF_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const
-{
-    if (m_pDecoder) {
-        return m_pDecoder->SkipToScanline(line, pPause);
-    }
+        last_src_x = src_x;
+        last_argb = argb;
+      }
+      if (dest_Bpp == 4) {
+        *(FX_DWORD*)pDestPixel = FXARGB_TODIB(argb);
+      } else {
+        *pDestPixel++ = FXARGB_B(argb);
+        *pDestPixel++ = FXARGB_G(argb);
+        *pDestPixel = FXARGB_R(argb);
+      }
+    }
+  }
+}
+void CPDF_DIBSource::SetDownSampleSize(int dest_width, int dest_height) const {
+  if (m_pDecoder) {
+    m_pDecoder->DownScale(dest_width, dest_height);
+    ((CPDF_DIBSource*)this)->m_Width = m_pDecoder->GetWidth();
+    ((CPDF_DIBSource*)this)->m_Height = m_pDecoder->GetHeight();
+  }
+}
+void CPDF_DIBSource::ClearImageData() {
+  if (m_pDecoder) {
+    m_pDecoder->ClearImageData();
+  }
+}
+CPDF_ProgressiveImageLoaderHandle::CPDF_ProgressiveImageLoaderHandle() {
+  m_pImageLoader = NULL;
+  m_pCache = NULL;
+  m_pImage = NULL;
+}
+CPDF_ProgressiveImageLoaderHandle::~CPDF_ProgressiveImageLoaderHandle() {}
+FX_BOOL CPDF_ProgressiveImageLoaderHandle::Start(
+    CPDF_ImageLoader* pImageLoader,
+    const CPDF_ImageObject* pImage,
+    CPDF_PageRenderCache* pCache,
+    FX_BOOL bStdCS,
+    FX_DWORD GroupFamily,
+    FX_BOOL bLoadMask,
+    CPDF_RenderStatus* pRenderStatus,
+    int32_t nDownsampleWidth,
+    int32_t nDownsampleHeight) {
+  m_pImageLoader = pImageLoader;
+  m_pCache = pCache;
+  m_pImage = (CPDF_ImageObject*)pImage;
+  m_nDownsampleWidth = nDownsampleWidth;
+  m_nDownsampleHeight = nDownsampleHeight;
+  FX_BOOL ret;
+  if (pCache) {
+    ret = pCache->StartGetCachedBitmap(pImage->m_pImage->GetStream(), bStdCS,
+                                       GroupFamily, bLoadMask, pRenderStatus,
+                                       m_nDownsampleWidth, m_nDownsampleHeight);
+    if (ret == FALSE) {
+      m_pImageLoader->m_bCached = TRUE;
+      m_pImageLoader->m_pBitmap = pCache->m_pCurImageCache->DetachBitmap();
+      m_pImageLoader->m_pMask = pCache->m_pCurImageCache->DetachMask();
+      m_pImageLoader->m_MatteColor = pCache->m_pCurImageCache->m_MatteColor;
+    }
+  } else {
+    ret = pImage->m_pImage->StartLoadDIBSource(pRenderStatus->m_pFormResource,
+                                               pRenderStatus->m_pPageResource,
+                                               bStdCS, GroupFamily, bLoadMask);
+    if (ret == FALSE) {
+      m_pImageLoader->m_bCached = FALSE;
+      m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap();
+      m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask();
+      m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor;
+    }
+  }
+  return ret;
+}
+FX_BOOL CPDF_ProgressiveImageLoaderHandle::Continue(IFX_Pause* pPause) {
+  FX_BOOL ret;
+  if (m_pCache) {
+    ret = m_pCache->Continue(pPause);
+    if (ret == FALSE) {
+      m_pImageLoader->m_bCached = TRUE;
+      m_pImageLoader->m_pBitmap = m_pCache->m_pCurImageCache->DetachBitmap();
+      m_pImageLoader->m_pMask = m_pCache->m_pCurImageCache->DetachMask();
+      m_pImageLoader->m_MatteColor = m_pCache->m_pCurImageCache->m_MatteColor;
+    }
+  } else {
+    ret = m_pImage->m_pImage->Continue(pPause);
+    if (ret == FALSE) {
+      m_pImageLoader->m_bCached = FALSE;
+      m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap();
+      m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask();
+      m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor;
+    }
+  }
+  return ret;
+}
+FX_BOOL CPDF_ImageLoader::Load(const CPDF_ImageObject* pImage,
+                               CPDF_PageRenderCache* pCache,
+                               FX_BOOL bStdCS,
+                               FX_DWORD GroupFamily,
+                               FX_BOOL bLoadMask,
+                               CPDF_RenderStatus* pRenderStatus) {
+  if (pImage == NULL) {
     return FALSE;
-}
-void CPDF_DIBSource::DownSampleScanline(int line, uint8_t* dest_scan, int dest_bpp,
-                                        int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const
-{
-    if (line < 0 || dest_scan == NULL || dest_bpp <= 0 ||
-        dest_width <= 0 || clip_left < 0 || clip_width <= 0) {
-        return;
-    }
-
-    FX_DWORD src_width = m_Width;
-    FX_SAFE_DWORD pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width, 1);
-    if (!pitch.IsValid()) {
-        return;
-    }
-
-    const uint8_t* pSrcLine = NULL;
-    if (m_pCachedBitmap) {
-        pSrcLine = m_pCachedBitmap->GetScanline(line);
-    } else if (m_pDecoder) {
-        pSrcLine = m_pDecoder->GetScanline(line);
-    } else {
-        FX_DWORD src_pitch = pitch.ValueOrDie();
-        pitch *= (line+1);
-        if (!pitch.IsValid()) {
-            return;
-        }
-
-        if (m_pStreamAcc->GetSize() >= pitch.ValueOrDie()) {
-            pSrcLine = m_pStreamAcc->GetData() + line * src_pitch;
-        }
-    }
-    int orig_Bpp = m_bpc * m_nComponents / 8;
-    int dest_Bpp = dest_bpp / 8;
-    if (pSrcLine == NULL) {
-        FXSYS_memset(dest_scan, 0xff, dest_Bpp * clip_width);
-        return;
-    }
-
-    FX_SAFE_INT32 max_src_x = clip_left;
-    max_src_x += clip_width - 1;
-    max_src_x *= src_width;
-    max_src_x /= dest_width;
-    if (!max_src_x.IsValid()) {
-        return;
-    }
-
-    CFX_FixedBufGrow<uint8_t, 128> temp(orig_Bpp);
-    if (m_bpc * m_nComponents == 1) {
-        FX_DWORD set_argb = (FX_DWORD) - 1, reset_argb = 0;
-        if (m_bImageMask) {
-            if (m_bDefaultDecode) {
-                set_argb = 0;
-                reset_argb = (FX_DWORD) - 1;
-            }
-        } else if (m_bColorKey) {
-            reset_argb = m_pPalette ? m_pPalette[0] : 0xff000000;
-            set_argb = m_pPalette ? m_pPalette[1] : 0xffffffff;
-            if (m_pCompData[0].m_ColorKeyMin == 0) {
-                reset_argb = 0;
-            }
-            if (m_pCompData[0].m_ColorKeyMax == 1) {
-                set_argb = 0;
-            }
-            set_argb = FXARGB_TODIB(set_argb);
-            reset_argb = FXARGB_TODIB(reset_argb);
-            for (int i = 0; i < clip_width; i ++) {
-                FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
-                if (bFlipX) {
-                    src_x = src_width - src_x - 1;
-                }
-                src_x %= src_width;
-                if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) {
-                    ((FX_DWORD*)dest_scan)[i] = set_argb;
-                } else {
-                    ((FX_DWORD*)dest_scan)[i] = reset_argb;
-                }
-            }
-            return;
-        } else {
-            if (dest_Bpp == 1) {
-            } else if (m_pPalette) {
-                reset_argb = m_pPalette[0];
-                set_argb = m_pPalette[1];
-            }
-        }
-        for (int i = 0; i < clip_width; i ++) {
-            FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
-            if (bFlipX) {
-                src_x = src_width - src_x - 1;
-            }
-            src_x %= src_width;
-            int dest_pos = i * dest_Bpp;
-            if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) {
-                if (dest_Bpp == 1) {
-                    dest_scan[dest_pos] = (uint8_t)set_argb;
-                } else if (dest_Bpp == 3) {
-                    dest_scan[dest_pos] = FXARGB_B(set_argb);
-                    dest_scan[dest_pos + 1] = FXARGB_G(set_argb);
-                    dest_scan[dest_pos + 2] = FXARGB_R(set_argb);
-                } else {
-                    *(FX_DWORD*)(dest_scan + dest_pos) = set_argb;
-                }
-            } else {
-                if (dest_Bpp == 1) {
-                    dest_scan[dest_pos] = (uint8_t)reset_argb;
-                } else if (dest_Bpp == 3) {
-                    dest_scan[dest_pos] = FXARGB_B(reset_argb);
-                    dest_scan[dest_pos + 1] = FXARGB_G(reset_argb);
-                    dest_scan[dest_pos + 2] = FXARGB_R(reset_argb);
-                } else {
-                    *(FX_DWORD*)(dest_scan + dest_pos) = reset_argb;
-                }
-            }
-        }
-        return;
-    } else if (m_bpc * m_nComponents <= 8) {
-        if (m_bpc < 8) {
-            int src_bit_pos = 0;
-            for (FX_DWORD col = 0; col < src_width; col ++) {
-                int color_index = 0;
-                for (FX_DWORD color = 0; color < m_nComponents; color ++) {
-                    int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc);
-                    color_index |= data << (color * m_bpc);
-                    src_bit_pos += m_bpc;
-                }
-                m_pLineBuf[col] = color_index;
-            }
-            pSrcLine = m_pLineBuf;
-        }
-        if (m_bColorKey) {
-            for (int i = 0; i < clip_width; i ++) {
-                FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
-                if (bFlipX) {
-                    src_x = src_width - src_x - 1;
-                }
-                src_x %= src_width;
-                uint8_t* pDestPixel = dest_scan + i * 4;
-                uint8_t index = pSrcLine[src_x];
-                if (m_pPalette) {
-                    *pDestPixel++ = FXARGB_B(m_pPalette[index]);
-                    *pDestPixel++ = FXARGB_G(m_pPalette[index]);
-                    *pDestPixel++ = FXARGB_R(m_pPalette[index]);
-                } else {
-                    *pDestPixel++ = index;
-                    *pDestPixel++ = index;
-                    *pDestPixel++ = index;
-                }
-                *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || index > m_pCompData[0].m_ColorKeyMax) ? 0xff : 0;
-            }
-            return;
-        }
-        for (int i = 0; i < clip_width; i ++) {
-            FX_DWORD src_x = (clip_left + i) * src_width / dest_width;
-            if (bFlipX) {
-                src_x = src_width - src_x - 1;
-            }
-            src_x %= src_width;
-            uint8_t index = pSrcLine[src_x];
-            if (dest_Bpp == 1) {
-                dest_scan[i] = index;
-            } else {
-                int dest_pos = i * dest_Bpp;
-                FX_ARGB argb = m_pPalette[index];
-                dest_scan[dest_pos] = FXARGB_B(argb);
-                dest_scan[dest_pos + 1] = FXARGB_G(argb);
-                dest_scan[dest_pos + 2] = FXARGB_R(argb);
-            }
-        }
-        return;
-    } else {
-        int last_src_x = -1;
-        FX_ARGB last_argb;
-        FX_FLOAT orig_Not8Bpp = (FX_FLOAT)m_bpc * (FX_FLOAT)m_nComponents / 8.0f;
-        FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1);
-        for (int i = 0; i < clip_width; i ++) {
-            int dest_x = clip_left + i;
-            FX_DWORD src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) * (int64_t)src_width / dest_width;
-            src_x %= src_width;
-            const uint8_t* pSrcPixel = NULL;
-            if (m_bpc % 8 == 0) {
-                pSrcPixel = pSrcLine + src_x * orig_Bpp;
-            } else {
-                pSrcPixel = pSrcLine + (int)(src_x * orig_Not8Bpp);
-            }
-            uint8_t* pDestPixel = dest_scan + i * dest_Bpp;
-            FX_ARGB argb;
-            if (src_x == last_src_x) {
-                argb = last_argb;
-            } else {
-                if (m_pColorSpace) {
-                    uint8_t color[4];
-                    if (!m_bDefaultDecode) {
-                        for (int i = 0; i < m_nComponents; i ++) {
-                            int color_value = (int)((m_pCompData[i].m_DecodeMin + m_pCompData[i].m_DecodeStep * (FX_FLOAT)pSrcPixel[i]) * 255.0f + 0.5f);
-                            temp[i] = color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value);
-                        }
-                        m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
-                    } else {
-                        if (m_bpc < 8) {
-                            int src_bit_pos = 0;
-                            if (src_x % 2) {
-                                src_bit_pos = 4;
-                            }
-                            for (FX_DWORD i = 0; i < m_nComponents; i ++) {
-                                temp[i] = (uint8_t)(_GetBits8(pSrcPixel, src_bit_pos, m_bpc) * unit_To8Bpc);
-                                src_bit_pos += m_bpc;
-                            }
-                            m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
-                        } else {
-                            m_pColorSpace->TranslateImageLine(color, pSrcPixel, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
-                        }
-                    }
-                    argb = FXARGB_MAKE(0xff, color[2], color[1], color[0]);
-                } else {
-                    argb = FXARGB_MAKE(0xff, pSrcPixel[2], pSrcPixel[1], pSrcPixel[0]);
-                }
-                if (m_bColorKey) {
-                    int alpha = 0xff;
-                    if (m_nComponents == 3 && m_bpc == 8) {
-                        alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin ||
-                                 pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax ||
-                                 pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin ||
-                                 pSrcPixel[1] > m_pCompData[1].m_ColorKeyMax ||
-                                 pSrcPixel[2] < m_pCompData[2].m_ColorKeyMin ||
-                                 pSrcPixel[2] > m_pCompData[2].m_ColorKeyMax) ? 0xff : 0;
-                    }
-                    argb &= 0xffffff;
-                    argb |= alpha << 24;
-                }
-                last_src_x = src_x;
-                last_argb = argb;
-            }
-            if (dest_Bpp == 4) {
-                *(FX_DWORD*)pDestPixel = FXARGB_TODIB(argb);
-            } else {
-                *pDestPixel++ = FXARGB_B(argb);
-                *pDestPixel++ = FXARGB_G(argb);
-                *pDestPixel = FXARGB_R(argb);
-            }
-        }
-    }
-}
-void CPDF_DIBSource::SetDownSampleSize(int dest_width, int dest_height) const
-{
-    if (m_pDecoder) {
-        m_pDecoder->DownScale(dest_width, dest_height);
-        ((CPDF_DIBSource*)this)->m_Width = m_pDecoder->GetWidth();
-        ((CPDF_DIBSource*)this)->m_Height = m_pDecoder->GetHeight();
-    }
-}
-void CPDF_DIBSource::ClearImageData()
-{
-    if (m_pDecoder) {
-        m_pDecoder->ClearImageData();
-    }
-}
-CPDF_ProgressiveImageLoaderHandle::CPDF_ProgressiveImageLoaderHandle()
-{
-    m_pImageLoader = NULL;
-    m_pCache = NULL;
-    m_pImage = NULL;
-}
-CPDF_ProgressiveImageLoaderHandle::~CPDF_ProgressiveImageLoaderHandle()
-{
-}
-FX_BOOL CPDF_ProgressiveImageLoaderHandle::Start(CPDF_ImageLoader* pImageLoader, const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus, int32_t nDownsampleWidth, int32_t nDownsampleHeight)
-{
-    m_pImageLoader = pImageLoader;
-    m_pCache = pCache;
-    m_pImage = (CPDF_ImageObject*)pImage;
-    m_nDownsampleWidth = nDownsampleWidth;
-    m_nDownsampleHeight = nDownsampleHeight;
-    FX_BOOL ret;
-    if (pCache) {
-        ret = pCache->StartGetCachedBitmap(pImage->m_pImage->GetStream(), bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight);
-        if (ret == FALSE) {
-            m_pImageLoader->m_bCached = TRUE;
-            m_pImageLoader->m_pBitmap = pCache->m_pCurImageCache->DetachBitmap();
-            m_pImageLoader->m_pMask = pCache->m_pCurImageCache->DetachMask();
-            m_pImageLoader->m_MatteColor = pCache->m_pCurImageCache->m_MatteColor;
-        }
-    } else {
-        ret = pImage->m_pImage->StartLoadDIBSource(pRenderStatus->m_pFormResource, pRenderStatus->m_pPageResource, bStdCS, GroupFamily, bLoadMask);
-        if (ret == FALSE) {
-            m_pImageLoader->m_bCached = FALSE;
-            m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap();
-            m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask();
-            m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor;
-        }
-    }
-    return ret;
-}
-FX_BOOL CPDF_ProgressiveImageLoaderHandle::Continue(IFX_Pause* pPause)
-{
-    FX_BOOL ret;
-    if (m_pCache) {
-        ret = m_pCache->Continue(pPause);
-        if (ret == FALSE) {
-            m_pImageLoader->m_bCached = TRUE;
-            m_pImageLoader->m_pBitmap = m_pCache->m_pCurImageCache->DetachBitmap();
-            m_pImageLoader->m_pMask = m_pCache->m_pCurImageCache->DetachMask();
-            m_pImageLoader->m_MatteColor = m_pCache->m_pCurImageCache->m_MatteColor;
-        }
-    } else {
-        ret = m_pImage->m_pImage->Continue(pPause);
-        if (ret == FALSE) {
-            m_pImageLoader->m_bCached = FALSE;
-            m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap();
-            m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask();
-            m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor;
-        }
-    }
-    return ret;
-}
-FX_BOOL CPDF_ImageLoader::Load(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus)
-{
-    if (pImage == NULL) {
-        return FALSE;
-    }
-    if (pCache) {
-        pCache->GetCachedBitmap(pImage->m_pImage->GetStream(), m_pBitmap, m_pMask, m_MatteColor, bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight);
-        m_bCached = TRUE;
-    } else {
-        m_pBitmap = pImage->m_pImage->LoadDIBSource(&m_pMask, &m_MatteColor, bStdCS, GroupFamily, bLoadMask);
-        m_bCached = FALSE;
-    }
-    return FALSE;
-}
-FX_BOOL CPDF_ImageLoader::StartLoadImage(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, void*& LoadHandle, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus, int32_t nDownsampleWidth, int32_t nDownsampleHeight)
-{
-    m_nDownsampleWidth = nDownsampleWidth;
-    m_nDownsampleHeight = nDownsampleHeight;
-    CPDF_ProgressiveImageLoaderHandle* pLoaderHandle = new CPDF_ProgressiveImageLoaderHandle;
-    FX_BOOL ret = pLoaderHandle->Start(this, pImage, pCache, bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight);
-    LoadHandle = pLoaderHandle;
-    return ret;
-}
-FX_BOOL CPDF_ImageLoader::Continue(void* LoadHandle, IFX_Pause* pPause)
-{
-    return ((CPDF_ProgressiveImageLoaderHandle*)LoadHandle)->Continue(pPause);
-}
-CPDF_ImageLoader::~CPDF_ImageLoader()
-{
-    if (!m_bCached) {
-        delete m_pBitmap;
-        delete m_pMask;
-    }
-}
+  }
+  if (pCache) {
+    pCache->GetCachedBitmap(pImage->m_pImage->GetStream(), m_pBitmap, m_pMask,
+                            m_MatteColor, bStdCS, GroupFamily, bLoadMask,
+                            pRenderStatus, m_nDownsampleWidth,
+                            m_nDownsampleHeight);
+    m_bCached = TRUE;
+  } else {
+    m_pBitmap = pImage->m_pImage->LoadDIBSource(&m_pMask, &m_MatteColor, bStdCS,
+                                                GroupFamily, bLoadMask);
+    m_bCached = FALSE;
+  }
+  return FALSE;
+}
+FX_BOOL CPDF_ImageLoader::StartLoadImage(const CPDF_ImageObject* pImage,
+                                         CPDF_PageRenderCache* pCache,
+                                         void*& LoadHandle,
+                                         FX_BOOL bStdCS,
+                                         FX_DWORD GroupFamily,
+                                         FX_BOOL bLoadMask,
+                                         CPDF_RenderStatus* pRenderStatus,
+                                         int32_t nDownsampleWidth,
+                                         int32_t nDownsampleHeight) {
+  m_nDownsampleWidth = nDownsampleWidth;
+  m_nDownsampleHeight = nDownsampleHeight;
+  CPDF_ProgressiveImageLoaderHandle* pLoaderHandle =
+      new CPDF_ProgressiveImageLoaderHandle;
+  FX_BOOL ret = pLoaderHandle->Start(this, pImage, pCache, bStdCS, GroupFamily,
+                                     bLoadMask, pRenderStatus,
+                                     m_nDownsampleWidth, m_nDownsampleHeight);
+  LoadHandle = pLoaderHandle;
+  return ret;
+}
+FX_BOOL CPDF_ImageLoader::Continue(void* LoadHandle, IFX_Pause* pPause) {
+  return ((CPDF_ProgressiveImageLoaderHandle*)LoadHandle)->Continue(pPause);
+}
+CPDF_ImageLoader::~CPDF_ImageLoader() {
+  if (!m_bCached) {
+    delete m_pBitmap;
+    delete m_pMask;
+  }
+}