pdfium: only init pdfium library one and destroy on LO exit

With more and more usage of PDFium, it is hard to keep track of
the life-time of the PDFium library, so it can happen that a
FPDF_DestroyLibrary happens when we still have another instance
where PDFium is still use. The result of this is a crash. To
prevent this, just initialize the library once and delete, when
on LO exit.

This can be improved in the future to only keep the library
active when in actual use.

Reviewed-on: https://gerrit.libreoffice.org/c/core/+/95391
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit 067a8a954c8e1d8d6465a4ab5fb61e93f16c26c2)

Reviewed-on: https://gerrit.libreoffice.org/c/core/+/95933
Tested-by: Tomaž Vajngerl <quikee@gmail.com>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit 3538b83c8d83e66f63c745bd769d118117704026)

Conflicts:
	vcl/qa/cppunit/pdfexport/pdfexport.cxx
	vcl/source/filter/ipdf/pdfread.cxx
	vcl/source/graphic/VectorGraphicSearch.cxx

Change-Id: I5c7e5de7f8b97d10efb394c67c7a61b976c8d57c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/107943
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

7 files changed, 101 insertions, 40 deletions

diff --git a/include/vcl/filter/PDFiumLibrary.hxx b/include/vcl/filter/PDFiumLibrary.hxx
new file mode 100644
index 000000000000..1f6d97045088
--- /dev/null
+++ b/include/vcl/filter/PDFiumLibrary.hxx
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#pragma once
+
+#include <config_features.h>
+
+#if HAVE_FEATURE_PDFIUM
+
+#include <memory>
+#include <rtl/instance.hxx>
+#include <vcl/dllapi.h>
+
+namespace vcl
+{
+namespace pdf
+{
+class VCL_DLLPUBLIC PDFium final
+{
+private:
+    PDFium(const PDFium&) = delete;
+    PDFium& operator=(const PDFium&) = delete;
+
+public:
+    PDFium();
+    ~PDFium();
+};
+
+struct PDFiumLibrary : public rtl::StaticWithInit<std::shared_ptr<PDFium>, PDFiumLibrary>
+{
+    std::shared_ptr<PDFium> operator()() { return std::make_shared<PDFium>(); }
+};
+
+} // namespace pdf
+} // namespace pdf
+
+#endif // HAVE_FEATURE_PDFIUM
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/svx/source/svdraw/svdpdf.cxx b/svx/source/svdraw/svdpdf.cxx
index 9e49a3d1e90a..78437f247123 100644
--- a/svx/source/svdraw/svdpdf.cxx
+++ b/svx/source/svdraw/svdpdf.cxx
@@ -147,6 +147,7 @@ ImpSdrPdfImport::ImpSdrPdfImport(SdrModel& rModel, SdrLayerID nLay, const tools:
     , mnPageCount(0)
     , mdPageWidthPts(0)
     , mdPageHeightPts(0)
+    , mpPDFium(vcl::pdf::PDFiumLibrary::get())
 {
     mpVD->EnableOutput(false);
     mpVD->SetLineColor();
@@ -160,13 +161,6 @@ ImpSdrPdfImport::ImpSdrPdfImport(SdrModel& rModel, SdrLayerID nLay, const tools:
                                                svl::Items<EE_ITEMS_START, EE_ITEMS_END>{});
     checkClip();
 
-    FPDF_LIBRARY_CONFIG aConfig;
-    aConfig.version = 2;
-    aConfig.m_pUserFontPaths = nullptr;
-    aConfig.m_pIsolate = nullptr;
-    aConfig.m_v8EmbedderSlot = 0;
-    FPDF_InitLibraryWithConfig(&aConfig);
-
     // Load the buffer using pdfium.
     mpPdfDocument = FPDF_LoadMemDocument(mpPdfData->data(), mpPdfData->size(),
                                          /*password=*/nullptr);
@@ -199,11 +193,7 @@ ImpSdrPdfImport::ImpSdrPdfImport(SdrModel& rModel, SdrLayerID nLay, const tools:
     mnPageCount = FPDF_GetPageCount(mpPdfDocument);
 }
 
-ImpSdrPdfImport::~ImpSdrPdfImport()
-{
-    FPDF_CloseDocument(mpPdfDocument);
-    FPDF_DestroyLibrary();
-}
+ImpSdrPdfImport::~ImpSdrPdfImport() { FPDF_CloseDocument(mpPdfDocument); }
 
 void ImpSdrPdfImport::DoObjects(SvdProgressInfo* pProgrInfo, sal_uInt32* pActionsToReport,
                                 int nPageIndex)
diff --git a/svx/source/svdraw/svdpdf.hxx b/svx/source/svdraw/svdpdf.hxx
index df8eac35bbe7..ab880b930649 100644
--- a/svx/source/svdraw/svdpdf.hxx
+++ b/svx/source/svdraw/svdpdf.hxx
@@ -37,6 +37,8 @@
 
 #include <fpdfview.h>
 
+#include <vcl/filter/PDFiumLibrary.hxx>
+
 // Forward Declarations
 
 class SfxItemSet;
@@ -203,6 +205,8 @@ class ImpSdrPdfImport final
     tools::Rectangle PointsToLogic(double left, double right, double top, double bottom) const;
     Point PointsToLogic(double x, double y) const;
 
+    std::shared_ptr<vcl::pdf::PDFium> mpPDFium;
+
     // check for clip and evtl. fill maClip
     void checkClip();
     bool isClip() const;
diff --git a/vcl/Library_vcl.mk b/vcl/Library_vcl.mk
index 337dba4803df..64d56b45a9d0 100644
--- a/vcl/Library_vcl.mk
+++ b/vcl/Library_vcl.mk
@@ -304,6 +304,7 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
     vcl/source/gdi/wall \
     vcl/source/gdi/scrptrun \
     vcl/source/gdi/CommonSalLayout \
+    vcl/source/pdf/PDFiumLibrary \
     vcl/source/graphic/GraphicLoader \
     vcl/source/bitmap/bitmapfilter \
     vcl/source/bitmap/bitmapscalesuper \
diff --git a/vcl/qa/cppunit/pdfexport/pdfexport.cxx b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
index 0ac88bc96db9..d2a46756b89b 100644
--- a/vcl/qa/cppunit/pdfexport/pdfexport.cxx
+++ b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
@@ -28,6 +28,8 @@
 #include <fpdf_text.h>
 #include <fpdfview.h>
 
+#include <vcl/filter/PDFiumLibrary.hxx>
+
 using namespace ::com::sun::star;
 
 namespace
@@ -44,6 +46,7 @@ class PdfExportTest : public test::BootstrapFixture, public unotest::MacrosTest
     SvMemoryStream maMemory;
     // Export the document as PDF, then parse it with PDFium.
     void exportAndParse(const OUString& rURL, const utl::MediaDescriptor& rDescriptor);
+    std::shared_ptr<vcl::pdf::PDFium> mpPDFium;
 
 public:
     PdfExportTest();
@@ -141,19 +144,13 @@ void PdfExportTest::setUp()
     mxComponentContext.set(comphelper::getComponentContext(getMultiServiceFactory()));
     mxDesktop.set(frame::Desktop::create(mxComponentContext));
 
-    FPDF_LIBRARY_CONFIG config;
-    config.version = 2;
-    config.m_pUserFontPaths = nullptr;
-    config.m_pIsolate = nullptr;
-    config.m_v8EmbedderSlot = 0;
-    FPDF_InitLibraryWithConfig(&config);
+    mpPDFium = vcl::pdf::PDFiumLibrary::get();
 }
 
 void PdfExportTest::tearDown()
 {
     FPDF_ClosePage(mpPdfPage);
     FPDF_CloseDocument(mpPdfDocument);
-    FPDF_DestroyLibrary();
 
     if (mxComponent.is())
         mxComponent->dispose();
diff --git a/vcl/source/filter/ipdf/pdfread.cxx b/vcl/source/filter/ipdf/pdfread.cxx
index e1d5c5b9b890..b26b4157e54c 100644
--- a/vcl/source/filter/ipdf/pdfread.cxx
+++ b/vcl/source/filter/ipdf/pdfread.cxx
@@ -23,6 +23,8 @@
 #include <vcl/bitmapaccess.hxx>
 #include <unotools/ucbstreamhelper.hxx>
 
+#include <vcl/filter/PDFiumLibrary.hxx>
+
 using namespace com::sun::star;
 
 namespace
@@ -107,12 +109,7 @@ bool getCompatibleStream(SvStream& rInStream, SvStream& rOutStream,
     else
     {
         // Downconvert to PDF-1.4.
-        FPDF_LIBRARY_CONFIG aConfig;
-        aConfig.version = 2;
-        aConfig.m_pUserFontPaths = nullptr;
-        aConfig.m_pIsolate = nullptr;
-        aConfig.m_v8EmbedderSlot = 0;
-        FPDF_InitLibraryWithConfig(&aConfig);
+        auto pPdfium = vcl::pdf::PDFiumLibrary::get();
 
         // Read input into a buffer.
         SvMemoryStream aInBuffer;
@@ -129,7 +126,6 @@ bool getCompatibleStream(SvStream& rInStream, SvStream& rOutStream,
             return false;
 
         FPDF_CloseDocument(pPdfDocument);
-        FPDF_DestroyLibrary();
 
         aWriter.m_aStream.Seek(STREAM_SEEK_TO_BEGIN);
         rOutStream.WriteStream(aWriter.m_aStream);
@@ -163,12 +159,7 @@ size_t RenderPDFBitmaps(const void* pBuffer, int nSize, std::vector<Bitmap>& rBi
                         const size_t nFirstPage, int nPages,
                         const double fResolutionDPI)
 {
-    FPDF_LIBRARY_CONFIG aConfig;
-    aConfig.version = 2;
-    aConfig.m_pUserFontPaths = nullptr;
-    aConfig.m_pIsolate = nullptr;
-    aConfig.m_v8EmbedderSlot = 0;
-    FPDF_InitLibraryWithConfig(&aConfig);
+    auto pPdfium = vcl::pdf::PDFiumLibrary::get();
 
     // Load the buffer using pdfium.
     FPDF_DOCUMENT pPdfDocument = FPDF_LoadMemDocument(pBuffer, nSize, /*password=*/nullptr);
@@ -217,7 +208,6 @@ size_t RenderPDFBitmaps(const void* pBuffer, int nSize, std::vector<Bitmap>& rBi
     }
 
     FPDF_CloseDocument(pPdfDocument);
-    FPDF_DestroyLibrary();
 
     return rBitmaps.size();
 }
@@ -314,12 +304,7 @@ size_t ImportPDFUnloaded(const OUString& rURL, std::vector<std::pair<Graphic, Si
     std::shared_ptr<GfxLink> pGfxLink(std::make_shared<GfxLink>(
         std::move(pGraphicContent), nGraphicContentSize, GfxLinkType::NativePdf));
 
-    FPDF_LIBRARY_CONFIG aConfig;
-    aConfig.version = 2;
-    aConfig.m_pUserFontPaths = nullptr;
-    aConfig.m_pIsolate = nullptr;
-    aConfig.m_v8EmbedderSlot = 0;
-    FPDF_InitLibraryWithConfig(&aConfig);
+    auto pPdfium = vcl::pdf::PDFiumLibrary::get();
 
     // Load the buffer using pdfium.
     FPDF_DOCUMENT pPdfDocument
@@ -357,7 +342,6 @@ size_t ImportPDFUnloaded(const OUString& rURL, std::vector<std::pair<Graphic, Si
     }
 
     FPDF_CloseDocument(pPdfDocument);
-    FPDF_DestroyLibrary();
 
     return rGraphics.size();
 #else
diff --git a/vcl/source/pdf/PDFiumLibrary.cxx b/vcl/source/pdf/PDFiumLibrary.cxx
new file mode 100644
index 000000000000..9d822c34642c
--- /dev/null
+++ b/vcl/source/pdf/PDFiumLibrary.cxx
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#include <config_features.h>
+
+#if HAVE_FEATURE_PDFIUM
+
+#include <vcl/filter/PDFiumLibrary.hxx>
+#include <fpdf_doc.h>
+
+namespace vcl
+{
+namespace pdf
+{
+PDFium::PDFium()
+{
+    FPDF_LIBRARY_CONFIG aConfig;
+    aConfig.version = 2;
+    aConfig.m_pUserFontPaths = nullptr;
+    aConfig.m_pIsolate = nullptr;
+    aConfig.m_v8EmbedderSlot = 0;
+    FPDF_InitLibraryWithConfig(&aConfig);
+}
+
+PDFium::~PDFium() { FPDF_DestroyLibrary(); }
+
+} // end pdf
+} // end vcl
+
+#endif // HAVE_FEATURE_PDFIUM
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */