Add CPDF_ImageObject::GetImage().

And use it where appropriate.

Review-Url: https://codereview.chromium.org/2224623002

4 files changed, 45 insertions, 50 deletions

diff --git a/core/fpdfapi/fpdf_render/fpdf_render.cpp b/core/fpdfapi/fpdf_render/fpdf_render.cpp
index ef208b54fd..f4e1414172 100644
--- a/core/fpdfapi/fpdf_render/fpdf_render.cpp
+++ b/core/fpdfapi/fpdf_render/fpdf_render.cpp
@@ -6,6 +6,8 @@
 
 #include "core/fpdfapi/fpdf_render/render_int.h"
 
+#include <memory>
+
 #include "core/fpdfapi/fpdf_font/cpdf_type3char.h"
 #include "core/fpdfapi/fpdf_font/cpdf_type3font.h"
 #include "core/fpdfapi/fpdf_page/cpdf_colorstatedata.h"
@@ -686,7 +688,7 @@ FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj,
       pGeneralState ? ToDictionary(pGeneralState->m_pSoftMask) : nullptr;
   if (pSMaskDict) {
     if (pPageObj->IsImage() &&
-        pPageObj->AsImage()->m_pImage->GetDict()->KeyExist("SMask")) {
+        pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
       pSMaskDict = nullptr;
     }
   }
@@ -721,11 +723,12 @@ FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj,
       pPage = m_pContext->GetPageCache()->GetPage();
       pDocument = pPage->m_pDocument;
     } else {
-      pDocument = pPageObj->AsImage()->m_pImage->GetDocument();
+      pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
     }
     CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
     CPDF_Object* pCSObj = pPageObj->AsImage()
-                              ->m_pImage->GetStream()
+                              ->GetImage()
+                              ->GetStream()
                               ->GetDict()
                               ->GetDirectObjectBy("ColorSpace");
     CPDF_ColorSpace* pColorSpace =
diff --git a/core/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/fpdfapi/fpdf_render/fpdf_render_image.cpp
index fc0321b46b..f4f82a131e 100644
--- a/core/fpdfapi/fpdf_render/fpdf_render_image.cpp
+++ b/core/fpdfapi/fpdf_render/fpdf_render_image.cpp
@@ -6,6 +6,7 @@
 
 #include "core/fpdfapi/fpdf_render/render_int.h"
 
+#include <memory>
 #include <utility>
 #include <vector>
 
@@ -442,7 +443,7 @@ FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() {
   }
   if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) {
     CPDF_Object* pFilters =
-        m_pImageObject->m_pImage->GetStream()->GetDict()->GetDirectObjectBy(
+        m_pImageObject->GetImage()->GetStream()->GetDict()->GetDirectObjectBy(
             "Filter");
     if (pFilters) {
       if (pFilters->IsName()) {
@@ -463,7 +464,7 @@ FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() {
   }
   if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) {
     m_Flags |= FXDIB_NOSMOOTH;
-  } else if (m_pImageObject->m_pImage->IsInterpol()) {
+  } else if (m_pImageObject->GetImage()->IsInterpol()) {
     m_Flags |= FXDIB_INTERPOL;
   }
   if (m_Loader.m_pMask) {
@@ -482,11 +483,11 @@ FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() {
       pPage = m_pRenderStatus->m_pContext->GetPageCache()->GetPage();
       pDocument = pPage->m_pDocument;
     } else {
-      pDocument = m_pImageObject->m_pImage->GetDocument();
+      pDocument = m_pImageObject->GetImage()->GetDocument();
     }
     CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
     CPDF_Object* pCSObj =
-        m_pImageObject->m_pImage->GetStream()->GetDict()->GetDirectObjectBy(
+        m_pImageObject->GetImage()->GetStream()->GetDict()->GetDirectObjectBy(
             "ColorSpace");
     CPDF_ColorSpace* pColorSpace =
         pDocument->LoadColorSpace(pCSObj, pPageResources);
@@ -512,7 +513,7 @@ FX_BOOL CPDF_ImageRenderer::Start(CPDF_RenderStatus* pStatus,
   m_pImageObject = pObj->AsImage();
   m_BlendType = blendType;
   m_pObj2Device = pObj2Device;
-  CPDF_Dictionary* pOC = m_pImageObject->m_pImage->GetOC();
+  CPDF_Dictionary* pOC = m_pImageObject->GetImage()->GetOC();
   if (pOC && m_pRenderStatus->m_Options.m_pOCContext &&
       !m_pRenderStatus->m_Options.m_pOCContext->CheckOCGVisible(pOC)) {
     return FALSE;
diff --git a/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
index 3edfe58f07..2fe6730479 100644
--- a/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
+++ b/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
@@ -28,11 +28,11 @@ unsigned int GetBits8(const uint8_t* pData, uint64_t bitpos, size_t nbits) {
   ASSERT(nbits == 1 || nbits == 2 || nbits == 4 || nbits == 8 || nbits == 16);
   ASSERT((bitpos & (nbits - 1)) == 0);
   unsigned int byte = pData[bitpos / 8];
-  if (nbits == 8) {
+  if (nbits == 8)
     return byte;
-  } else if (nbits == 16) {
+
+  if (nbits == 16)
     return byte * 256 + pData[bitpos / 8 + 1];
-  }
 
   return (byte >> (8 - nbits - (bitpos % 8))) & ((1 << nbits) - 1);
 }
@@ -1492,53 +1492,41 @@ FX_BOOL CPDF_ImageLoaderHandle::Start(CPDF_ImageLoader* pImageLoader,
   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) {
-      m_pImageLoader->m_bCached = TRUE;
-      m_pImageLoader->m_pBitmap =
-          pCache->GetCurImageCacheEntry()->DetachBitmap();
-      m_pImageLoader->m_pMask = pCache->GetCurImageCacheEntry()->DetachMask();
-      m_pImageLoader->m_MatteColor =
-          pCache->GetCurImageCacheEntry()->m_MatteColor;
-    }
+    ret = pCache->StartGetCachedBitmap(
+        m_pImage->GetImage()->GetStream(), bStdCS, GroupFamily, bLoadMask,
+        pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight);
   } else {
-    ret = pImage->m_pImage->StartLoadDIBSource(pRenderStatus->m_pFormResource,
-                                               pRenderStatus->m_pPageResource,
-                                               bStdCS, GroupFamily, bLoadMask);
-    if (!ret) {
-      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;
-    }
+    ret = m_pImage->GetImage()->StartLoadDIBSource(
+        pRenderStatus->m_pFormResource, pRenderStatus->m_pPageResource, bStdCS,
+        GroupFamily, bLoadMask);
   }
+  if (!ret)
+    HandleFailure();
   return ret;
 }
 
 FX_BOOL CPDF_ImageLoaderHandle::Continue(IFX_Pause* pPause) {
-  FX_BOOL ret;
+  FX_BOOL ret = m_pCache ? m_pCache->Continue(pPause)
+                         : m_pImage->GetImage()->Continue(pPause);
+  if (!ret)
+    HandleFailure();
+  return ret;
+}
+
+void CPDF_ImageLoaderHandle::HandleFailure() {
   if (m_pCache) {
-    ret = m_pCache->Continue(pPause);
-    if (!ret) {
-      m_pImageLoader->m_bCached = TRUE;
-      m_pImageLoader->m_pBitmap =
-          m_pCache->GetCurImageCacheEntry()->DetachBitmap();
-      m_pImageLoader->m_pMask = m_pCache->GetCurImageCacheEntry()->DetachMask();
-      m_pImageLoader->m_MatteColor =
-          m_pCache->GetCurImageCacheEntry()->m_MatteColor;
-    }
+    CPDF_ImageCacheEntry* entry = m_pCache->GetCurImageCacheEntry();
+    m_pImageLoader->m_bCached = TRUE;
+    m_pImageLoader->m_pBitmap = entry->DetachBitmap();
+    m_pImageLoader->m_pMask = entry->DetachMask();
+    m_pImageLoader->m_MatteColor = entry->m_MatteColor;
   } else {
-    ret = m_pImage->m_pImage->Continue(pPause);
-    if (!ret) {
-      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;
-    }
+    CPDF_Image* pImage = m_pImage->GetImage();
+    m_pImageLoader->m_bCached = FALSE;
+    m_pImageLoader->m_pBitmap = pImage->DetachBitmap();
+    m_pImageLoader->m_pMask = pImage->DetachMask();
+    m_pImageLoader->m_MatteColor = pImage->m_MatteColor;
   }
-  return ret;
 }
 
 FX_BOOL CPDF_ImageLoader::Start(
diff --git a/core/fpdfapi/fpdf_render/render_int.h b/core/fpdfapi/fpdf_render/render_int.h
index 4494b8cefb..e3e1a8ad42 100644
--- a/core/fpdfapi/fpdf_render/render_int.h
+++ b/core/fpdfapi/fpdf_render/render_int.h
@@ -102,7 +102,7 @@ class CPDF_TransferFunc {
 
 class CPDF_DocRenderData {
  public:
-  CPDF_DocRenderData(CPDF_Document* pPDFDoc = nullptr);
+  explicit CPDF_DocRenderData(CPDF_Document* pPDFDoc);
   ~CPDF_DocRenderData();
   CPDF_Type3Cache* GetCachedType3(CPDF_Type3Font* pFont);
   CPDF_TransferFunc* GetTransferFunc(CPDF_Object* pObj);
@@ -313,6 +313,7 @@ class CPDF_ImageLoader {
   int32_t m_nDownsampleWidth;
   int32_t m_nDownsampleHeight;
 };
+
 class CPDF_ImageLoaderHandle {
  public:
   CPDF_ImageLoaderHandle();
@@ -330,6 +331,8 @@ class CPDF_ImageLoaderHandle {
   FX_BOOL Continue(IFX_Pause* pPause);
 
  protected:
+  void HandleFailure();
+
   CPDF_ImageLoader* m_pImageLoader;
   CPDF_PageRenderCache* m_pCache;
   CPDF_ImageObject* m_pImage;