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fdo#77140 embeddedobj: avoid unneeded conversion in ConvertBufferToFormat()

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The primary reason is not performance: on export currently we loose some
EMF+ properties. While it would be good to fix all those problems one by
one, this is a small fix to avoid all kind of roundtrip problems in this
situation.

Change-Id: If5e1c1eabd8290f36b538e374c9707ae17097786
This commit is contained in:
Miklos Vajna 2014-04-07 16:51:29 +02:00
parent 6ac0e1399a
commit 2a7fdf2a7b
2 changed files with 13 additions and 0 deletions
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1
embeddedobj/Library_emboleobj.mk
View file

@ -32,6 +32,7 @@ $(eval $(call gb_Library_use_libraries,emboleobj,\
sal \
tl \
utl \
vcl \
$(gb_UWINAPI) \
))

12
embeddedobj/source/msole/graphconvert.cxx
View file

@ -32,6 +32,7 @@
#include <comphelper/processfactory.hxx>
#include <comphelper/seqstream.hxx>
#include <tools/stream.hxx>
#include <vcl/graphicfilter.hxx>
#include "mtnotification.hxx"
#include "oleembobj.hxx"
@ -48,6 +49,17 @@ sal_Bool ConvertBufferToFormat( void* pBuf,
// produces sequence with data in requested format and returns it in aResult
if ( pBuf )
{
// First, in case the buffer is already in the requested format, then avoid a conversion.
SvMemoryStream aMemoryStream(pBuf, nBufSize, STREAM_READ);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
sal_uInt16 nRetFormat = 0;
if (rFilter.CanImportGraphic(OUString(), aMemoryStream, GRFILTER_FORMAT_DONTKNOW, &nRetFormat) == GRFILTER_OK &&
rFilter.GetImportFormatMediaType(nRetFormat) == aMimeType)
{
aResult <<= uno::Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemoryStream.GetData() ), aMemoryStream.Seek( STREAM_SEEK_TO_END ) );
return sal_True;
}
uno::Sequence < sal_Int8 > aData( (sal_Int8*)pBuf, nBufSize );
uno::Reference < io::XInputStream > xIn = new comphelper::SequenceInputStream( aData );
try