vcl/source/filter/graphicfilter.cxx | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
New commits:
commit 5bd1ac0083bf6047fd1b977f24ae5ffb7018f2a8
Author: Tor Lillqvist <t...@collabora.com>
AuthorDate: Wed Feb 27 14:28:55 2019 +0200
Commit: Tor Lillqvist <t...@collabora.com>
CommitDate: Thu Feb 28 17:16:49 2019 +0100
tdf#122537: Use "best speed" instead of default compression level on iOS
Speed is more important than size in the use case where this showed up
in a profile of the iOS app (inserting an image). This change causes
zlib's deflate_fast() being used instead of its deflate_slow(). For a
specific image I tested with the former takes 1.5 s, the latter 3.4 s.
This is just one aspect of the slowness of image insertio. The
resizing operations mentioned in the bug report is not yet
investigated.
Change-Id: Icf023522b965cb0265000c821a478610d098cd0a
Reviewed-on: https://gerrit.libreoffice.org/68434
Reviewed-by: Tomaž Vajngerl <qui...@gmail.com>
Reviewed-by: Tor Lillqvist <t...@collabora.com>
Tested-by: Tor Lillqvist <t...@collabora.com>
Reviewed-on: https://gerrit.libreoffice.org/68488
Tested-by: Jenkins
diff --git a/vcl/source/filter/graphicfilter.cxx
b/vcl/source/filter/graphicfilter.cxx
index 74bd19f35187..294fc93975cc 100644
--- a/vcl/source/filter/graphicfilter.cxx
+++ b/vcl/source/filter/graphicfilter.cxx
@@ -2479,6 +2479,7 @@ IMPL_LINK( GraphicFilter, FilterCallback, ConvertData&,
rData, bool )
sal_uInt16 nFormat = GRFILTER_FORMAT_DONTKNOW;
OString aShortName;
+ css::uno::Sequence< css::beans::PropertyValue > aFilterData;
switch( rData.mnFormat )
{
case ConvertDataFormat::BMP: aShortName = BMP_SHORTNAME; break;
@@ -2505,8 +2506,17 @@ IMPL_LINK( GraphicFilter, FilterCallback, ConvertData&,
rData, bool )
else if( !aShortName.isEmpty() )
{
// Export
+#ifdef IOS
+ if (aShortName == PNG_SHORTNAME)
+ {
+ aFilterData.realloc(aFilterData.getLength() + 1);
+ aFilterData[aFilterData.getLength() - 1].Name = "Compression";
+ // We "know" that this gets passed to zlib's deflateInit2_(). 1
means best speed.
+ aFilterData[aFilterData.getLength() - 1].Value <<= 1;
+ }
+#endif
nFormat = GetExportFormatNumberForShortName(
OStringToOUString(aShortName, RTL_TEXTENCODING_UTF8) );
- bRet = ExportGraphic( rData.maGraphic, OUString(), rData.mrStm,
nFormat ) == ERRCODE_NONE;
+ bRet = ExportGraphic( rData.maGraphic, OUString(), rData.mrStm,
nFormat, &aFilterData ) == ERRCODE_NONE;
}
return bRet;
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