tdf#44223 allow slideshow to play embedded media.

Implement MediaFileManager that create the temp media
file for package urls when making slideshow.

Change-Id: I10a5ddc405928b4322ad72eb603508faf25bf0db
Reviewed-on: https://gerrit.libreoffice.org/67209
Tested-by: Jenkins
Reviewed-by: Mark Hung <marklh9@gmail.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/avmedia/source/framework/mediaitem.cxx b/avmedia/source/framework/mediaitem.cxx
index 6f960f49f3bc..0fca80f6d5b4 100644
--- a/avmedia/source/framework/mediaitem.cxx
+++ b/avmedia/source/framework/mediaitem.cxx
@@ -38,6 +38,7 @@
 #include <comphelper/processfactory.hxx>
 #include <comphelper/storagehelper.hxx>
 #include <mediamisc.hxx>
+#include <osl/file.hxx>
 
 using namespace ::com::sun::star;
 
@@ -475,6 +476,50 @@ bool EmbedMedia(uno::Reference<frame::XModel> const& xModel,
     return false;
 }
 
+bool CreateMediaTempFile(uno::Reference<io::XInputStream> const& xInStream,
+        OUString& o_rTempFileURL, const OUString& rDesiredExtension)
+{
+    OUString tempFileURL;
+    ::osl::FileBase::RC const err =
+        ::osl::FileBase::createTempFile(nullptr, nullptr, & tempFileURL);
+    if (::osl::FileBase::E_None != err)
+    {
+        SAL_WARN("avmedia", "cannot create temp file");
+        return false;
+    }
+
+    if (!rDesiredExtension.isEmpty())
+    {
+        OUString newTempFileURL = tempFileURL + rDesiredExtension;
+        if (osl::File::move(tempFileURL, newTempFileURL) != osl::FileBase::E_None)
+        {
+            SAL_WARN("avmedia", "Could not rename file '" << tempFileURL << "' to '" << newTempFileURL << "'");
+            return false;
+        }
+        tempFileURL = newTempFileURL;
+    }
+
+    try
+    {
+        ::ucbhelper::Content tempContent(tempFileURL,
+                uno::Reference<ucb::XCommandEnvironment>(),
+                comphelper::getProcessComponentContext());
+        tempContent.writeStream(xInStream, true); // copy stream to file
+    }
+    catch (uno::Exception const& e)
+    {
+        SAL_WARN("avmedia", "exception: '" << e << "'");
+        return false;
+    }
+    o_rTempFileURL = tempFileURL;
+    return true;
+}
+
+MediaTempFile::~MediaTempFile()
+{
+    ::osl::File::remove(m_TempFileURL);
+}
+
 } // namespace avmedia
 
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