LibreOffice Module vcl (master) 1
jpeg.cxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#include "JpegReader.hxx"
21#include "JpegWriter.hxx"
22#include "jpeg.hxx"
23
24#include <vcl/graphicfilter.hxx>
25
26VCL_DLLPUBLIC bool ImportJPEG( SvStream& rInputStream, Graphic& rGraphic, GraphicFilterImportFlags nImportFlags, BitmapScopedWriteAccess* ppAccess )
27{
28 bool bReturn = true;
29
30 std::shared_ptr<GraphicReader> pContext = rGraphic.GetReaderContext();
31 rGraphic.SetReaderContext(nullptr);
32 JPEGReader* pJPEGReader = dynamic_cast<JPEGReader*>( pContext.get() );
33 if (!pJPEGReader)
34 {
35 pContext = std::make_shared<JPEGReader>( rInputStream, nImportFlags );
36 pJPEGReader = static_cast<JPEGReader*>( pContext.get() );
37 }
38
39 ReadState eReadState = pJPEGReader->Read( rGraphic, nImportFlags, ppAccess );
40
41 if( eReadState == JPEGREAD_ERROR )
42 {
43 bReturn = false;
44 }
45 else if( eReadState == JPEGREAD_NEED_MORE )
46 {
47 rGraphic.SetReaderContext( pContext );
48 }
49
50 return bReturn;
51}
52
53bool ExportJPEG(SvStream& rOutputStream, const Graphic& rGraphic,
54 const css::uno::Sequence<css::beans::PropertyValue>* pFilterData,
55 bool* pExportWasGrey)
56{
57 JPEGWriter aJPEGWriter( rOutputStream, pFilterData, pExportWasGrey );
58 bool bReturn = aJPEGWriter.Write( rGraphic );
59 return bReturn;
60}
61
62/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
ReadState
Definition: JpegReader.hxx:32
@ JPEGREAD_NEED_MORE
Definition: JpegReader.hxx:35
@ JPEGREAD_ERROR
Definition: JpegReader.hxx:34
void SetReaderContext(const std::shared_ptr< GraphicReader > &pReader)
Definition: graph.cxx:483
std::shared_ptr< GraphicReader > & GetReaderContext()
Definition: graph.cxx:478
ReadState Read(Graphic &rGraphic, GraphicFilterImportFlags nImportFlags, BitmapScopedWriteAccess *ppAccess)
Definition: JpegReader.cxx:285
bool Write(const Graphic &rGraphic)
Definition: JpegWriter.cxx:191
This template handles BitmapAccess the RAII way.
#define VCL_DLLPUBLIC
Definition: dllapi.h:29
Reference< XInputStream > rInputStream
GraphicFilterImportFlags
bool ExportJPEG(SvStream &rOutputStream, const Graphic &rGraphic, const css::uno::Sequence< css::beans::PropertyValue > *pFilterData, bool *pExportWasGrey)
Definition: jpeg.cxx:53
VCL_DLLPUBLIC bool ImportJPEG(SvStream &rInputStream, Graphic &rGraphic, GraphicFilterImportFlags nImportFlags, BitmapScopedWriteAccess *ppAccess)
Definition: jpeg.cxx:26