Exif reading/writing and Jpeg lossless transformations support.

Support for reading/writing of Exif image metadata. Currently only
orientation is implemented, but support for other tags can be added.

Jpeg lossless transformations - currently only lossless rotation is
supported, but others can be added when needed.

Additionally GraphicNativeTransform and GraphicNativeMetadata has
been added. The responsibillity of GraphicNativeTransform is to
provide graphic transformations (like rotation) on native data and
the purpose is to be as lossless as possible in transformations.
GraphicNativeMetadata is a class for reading metadata which is
contained in a native data graphic stream. For now both support
only Jpeg.

Change-Id: I3e67cd3e7f5386746bcd1f0bfd2b90f5fe834b92

16 files changed, 2626 insertions, 9 deletions

diff --git a/vcl/Library_vcl.mk b/vcl/Library_vcl.mk
index 057e508b7be0..ab66d47f8559 100644
--- a/vcl/Library_vcl.mk
+++ b/vcl/Library_vcl.mk
@@ -169,6 +169,8 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
     vcl/source/filter/FilterConfigItem \
     vcl/source/filter/graphicfilter \
     vcl/source/filter/graphicfilter2 \
+    vcl/source/filter/GraphicNativeTransform \
+    vcl/source/filter/GraphicNativeMetadata \
     vcl/source/filter/sgfbram \
     vcl/source/filter/sgvmain \
     vcl/source/filter/sgvspln \
@@ -177,9 +179,11 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
     vcl/source/filter/igif/gifread \
     vcl/source/filter/ixbm/xbmread \
     vcl/source/filter/ixpm/xpmread \
+    vcl/source/filter/jpeg/Exif \
     vcl/source/filter/jpeg/jpeg \
     vcl/source/filter/jpeg/JpegReader \
     vcl/source/filter/jpeg/JpegWriter \
+    vcl/source/filter/jpeg/JpegTransform \
     vcl/source/filter/wmf/emfwr \
     vcl/source/filter/wmf/enhwmf \
     vcl/source/filter/wmf/winmtf \
@@ -317,6 +321,7 @@ $(eval $(call gb_Library_add_exception_objects,vcl,\
 
 $(eval $(call gb_Library_add_cobjects,vcl,\
     vcl/source/filter/jpeg/jpegc \
+    vcl/source/filter/jpeg/transupp \
 ))
 
 # optional parts
diff --git a/vcl/Package_inc.mk b/vcl/Package_inc.mk
index 69fff7d6c03c..0fc6bb8c1f83 100644
--- a/vcl/Package_inc.mk
+++ b/vcl/Package_inc.mk
@@ -66,6 +66,8 @@ $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/gradient.hxx,vcl/gradient.hxx)
 $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/graph.h,vcl/graph.h))
 $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/graph.hxx,vcl/graph.hxx))
 $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/graphicfilter.hxx,vcl/graphicfilter.hxx))
+$(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/GraphicNativeTransform.hxx,vcl/GraphicNativeTransform.hxx))
+$(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/GraphicNativeMetadata.hxx,vcl/GraphicNativeMetadata.hxx))
 $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/graphictools.hxx,vcl/graphictools.hxx))
 $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/group.hxx,vcl/group.hxx))
 $(eval $(call gb_Package_add_file,vcl_inc,inc/vcl/hatch.hxx,vcl/hatch.hxx))
diff --git a/vcl/inc/vcl/GraphicNativeMetadata.hxx b/vcl/inc/vcl/GraphicNativeMetadata.hxx
new file mode 100644
index 000000000000..711f81a290b1
--- /dev/null
+++ b/vcl/inc/vcl/GraphicNativeMetadata.hxx
@@ -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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef _GRAPHICNATIVEMETADATA_HXX
+#define _GRAPHICNATIVEMETADATA_HXX
+
+#include <vcl/graph.hxx>
+
+class VCL_DLLPUBLIC GraphicNativeMetadata
+{
+    sal_uInt16 mRotation;
+
+public:
+    GraphicNativeMetadata();
+    virtual ~GraphicNativeMetadata();
+
+    bool Read(Graphic& rGraphic);
+    sal_uInt16 GetRotation();
+};
+
+#endif  //_GRAPHICNATIVEMETADATA_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/vcl/GraphicNativeTransform.hxx b/vcl/inc/vcl/GraphicNativeTransform.hxx
new file mode 100644
index 000000000000..ed6b70296e75
--- /dev/null
+++ b/vcl/inc/vcl/GraphicNativeTransform.hxx
@@ -0,0 +1,37 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef _GRAPHICNATIVETRANSFORM_HXX
+#define _GRAPHICNATIVETRANSFORM_HXX
+
+#include <vcl/graph.hxx>
+
+class VCL_DLLPUBLIC GraphicNativeTransform
+{
+    Graphic& mrGraphic;
+public:
+    GraphicNativeTransform(Graphic& rGraphic);
+    virtual ~GraphicNativeTransform();
+
+    bool Rotate(sal_uInt16 aRotation);
+};
+
+#endif  //_GRAPHICNATIVETRANSFORM_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/GraphicNativeMetadata.cxx b/vcl/source/filter/GraphicNativeMetadata.cxx
new file mode 100644
index 000000000000..c147f5461423
--- /dev/null
+++ b/vcl/source/filter/GraphicNativeMetadata.cxx
@@ -0,0 +1,58 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <vcl/GraphicNativeMetadata.hxx>
+
+#include <vcl/gfxlink.hxx>
+
+#include "jpeg/Exif.hxx"
+
+GraphicNativeMetadata::GraphicNativeMetadata() :
+    mRotation(0)
+{}
+
+GraphicNativeMetadata::~GraphicNativeMetadata()
+{}
+
+sal_uInt16 GraphicNativeMetadata::GetRotation()
+{
+    return mRotation;
+}
+
+bool GraphicNativeMetadata::Read(Graphic& rGraphic)
+{
+    GfxLink aLink = rGraphic.GetLink();
+    if ( aLink.GetType() != GFX_LINK_TYPE_NATIVE_JPG )
+        return false;
+    sal_uInt32 aDataSize = aLink.GetDataSize();
+    sal_uInt8* aBuffer = new sal_uInt8[aDataSize];
+
+    memcpy(aBuffer, aLink.GetData(), aDataSize);
+    SvMemoryStream aMemoryStream(aBuffer, aDataSize, STREAM_READ);
+
+    Exif aExif;
+    aExif.read(aMemoryStream);
+    mRotation = aExif.getRotation();
+
+    delete[] aBuffer;
+    return true;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/GraphicNativeTransform.cxx b/vcl/source/filter/GraphicNativeTransform.cxx
new file mode 100644
index 000000000000..6115e9353947
--- /dev/null
+++ b/vcl/source/filter/GraphicNativeTransform.cxx
@@ -0,0 +1,78 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <vcl/GraphicNativeTransform.hxx>
+
+#include <vcl/gfxlink.hxx>
+
+#include "jpeg/Exif.hxx"
+#include "jpeg/JpegTransform.hxx"
+
+GraphicNativeTransform::GraphicNativeTransform(Graphic& rGraphic) :
+    mrGraphic(rGraphic)
+{}
+
+GraphicNativeTransform::~GraphicNativeTransform()
+{}
+
+bool GraphicNativeTransform::Rotate(sal_uInt16 aRotation)
+{
+    if (aRotation == 0)
+        return true;
+
+    if (aRotation != 900 && aRotation != 1800 && aRotation != 2700)
+        return false;
+
+    GfxLink aLink = mrGraphic.GetLink();
+    if ( aLink.GetType() != GFX_LINK_TYPE_NATIVE_JPG )
+        return false;
+
+    sal_uInt32 aDataSize = aLink.GetDataSize();
+    sal_uInt8* aInputBuffer = new sal_uInt8[aDataSize];
+
+    memcpy(aInputBuffer, aLink.GetData(), aDataSize);
+    SvMemoryStream aSourceStream(aInputBuffer, aDataSize, STREAM_READ);
+
+    SvMemoryStream aTargetStream;
+    JpegTransform tranform(aSourceStream, aTargetStream);
+    tranform.setRotate(aRotation);
+    tranform.perform();
+
+    aTargetStream.Seek( STREAM_SEEK_TO_BEGIN );
+
+    Exif exif;
+    exif.setOrientation(Orientation::TOP_LEFT);
+    exif.write(aTargetStream);
+
+    aTargetStream.Seek( STREAM_SEEK_TO_END );
+    sal_uInt32 aBufferSize = aTargetStream.Tell();
+    sal_uInt8* pBuffer = new sal_uInt8[ aBufferSize ];
+
+    aTargetStream.Seek( STREAM_SEEK_TO_BEGIN );
+    aTargetStream.Read( pBuffer, aBufferSize );
+
+    BitmapEx aBitmap = mrGraphic.GetBitmapEx();
+    aBitmap.Rotate(aRotation, COL_BLACK);
+    mrGraphic = aBitmap;
+    mrGraphic.SetLink( GfxLink( pBuffer, aBufferSize, aLink.GetType(), sal_True ) );
+    return true;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/Exif.cxx b/vcl/source/filter/jpeg/Exif.cxx
new file mode 100644
index 000000000000..f0b1970d175f
--- /dev/null
+++ b/vcl/source/filter/jpeg/Exif.cxx
@@ -0,0 +1,167 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "Exif.hxx"
+
+Exif::Exif() :
+    maOrientation(TOP_LEFT)
+{}
+
+Exif::~Exif()
+{}
+
+Orientation Exif::getOrientation() {
+    return maOrientation;
+}
+
+void Exif::setOrientation(Orientation aOrientation) {
+    maOrientation = aOrientation;
+}
+
+Orientation Exif::convertToOrientation(sal_Int32 value)
+{
+    switch(value) {
+        case 1: return TOP_LEFT;
+        case 2: return TOP_RIGHT;
+        case 3: return BOTTOM_RIGHT;
+        case 4: return BOTTOM_LEFT;
+        case 5: return LEFT_TOP;
+        case 6: return RIGHT_TOP;
+        case 7: return RIGHT_BOTTOM;
+        case 8: return LEFT_BOTTOM;
+    }
+    return TOP_LEFT;
+}
+
+sal_Int32 Exif::getRotation()
+{
+    switch(maOrientation) {
+        case TOP_LEFT:
+            return 0;
+        case BOTTOM_RIGHT:
+            return 1800;
+        case RIGHT_TOP:
+            return 2700;
+        case LEFT_BOTTOM:
+            return 900;
+        default:
+            return 0;
+    }
+    return 0;
+}
+
+bool Exif::read(SvStream& rStream)
+{
+    sal_Int32 nStreamPosition = rStream.Tell();
+    bool result = processJpegStream(rStream, false);
+    rStream.Seek( nStreamPosition );
+
+    return result;
+}
+
+bool Exif::write(SvStream& rStream)
+{
+    sal_Int32 nStreamPosition = rStream.Tell();
+    bool result = processJpegStream(rStream, true);
+    rStream.Seek( nStreamPosition );
+
+    return result;
+}
+
+bool Exif::processJpegStream(SvStream& rStream, bool bSetValue)
+{
+    sal_uInt32  aMagic32;
+    sal_uInt16  aMagic16;
+    sal_uInt16  aLength;
+
+    rStream.SetNumberFormatInt( NUMBERFORMAT_INT_BIGENDIAN );
+    rStream >> aMagic32;
+
+    // Compare JPEG magic bytes
+    if( 0xffd8ff00 != ( aMagic32 & 0xffffff00 ) )
+    {
+        return false;
+    }
+
+    rStream >> aLength;
+    if (aLength < 8)
+    {
+        return false;
+    }
+    aLength -= 8;
+
+    rStream >> aMagic32;
+    rStream >> aMagic16;
+
+    // Compare EXIF magic bytes
+    if( 0x45786966 != aMagic32 || 0x0000 != aMagic16)
+    {
+        return false;
+    }
+
+    sal_uInt8* exifData = new sal_uInt8[aLength];
+    sal_uInt32 aExifDataBeginPosition = rStream.Tell();
+    rStream.Read(exifData, aLength);
+
+    sal_uInt16 offset;
+    offset = exifData[5];
+    offset <<= 8;
+    offset += exifData[4];
+
+    sal_uInt16 numberOfTags;
+    numberOfTags = exifData[offset+1];
+    numberOfTags <<= 8;
+    numberOfTags += exifData[offset];
+
+    offset += 2;
+
+    ExifIFD* ifd = NULL;
+
+    while (offset <= aLength - 12 && numberOfTags > 0) {
+        ifd = (ExifIFD*) &exifData[offset];
+
+        if (ifd->tag == Tag::ORIENTATION)
+        {
+            if(bSetValue)
+            {
+                ifd->tag = Tag::ORIENTATION;
+                ifd->type = 3;
+                ifd->count = 1;
+                ifd->offset = maOrientation;
+            }
+            else
+            {
+                maOrientation = convertToOrientation(ifd->offset);
+            }
+        }
+
+        numberOfTags--;
+        offset += 12;
+    }
+
+    if (bSetValue)
+    {
+        rStream.Seek(aExifDataBeginPosition);
+        rStream.Write(exifData, aLength);
+    }
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/Exif.hxx b/vcl/source/filter/jpeg/Exif.hxx
new file mode 100644
index 000000000000..cce6a63cfb96
--- /dev/null
+++ b/vcl/source/filter/jpeg/Exif.hxx
@@ -0,0 +1,82 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef _EXIF_HXX
+#define _EXIF_HXX
+
+#include <vcl/graph.hxx>
+#include <vcl/fltcall.hxx>
+#include <com/sun/star/uno/Sequence.h>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/task/XStatusIndicator.hpp>
+
+enum Orientation {
+    TOP_LEFT        = 1,
+    TOP_RIGHT       = 2,
+    BOTTOM_RIGHT    = 3,
+    BOTTOM_LEFT     = 4,
+    LEFT_TOP        = 5,
+    RIGHT_TOP       = 6,
+    RIGHT_BOTTOM    = 7,
+    LEFT_BOTTOM     = 8
+};
+
+enum Tag {
+    IMAGE_WIDTH     = 0x0100,
+    IMAGE_HEIGHT    = 0x0101,
+    BITS_PER_SAMPLE = 0x0102,
+    COMPRESSION     = 0x0103,
+    ORIENTATION     = 0x0112
+};
+
+class Exif
+{
+private:
+    Orientation maOrientation;
+    sal_Int32  mnStreamPosition;
+
+    bool processJpegStream(SvStream& rStream, bool bSetValue);
+
+    struct ExifIFD {
+        sal_uInt16 tag;
+        sal_uInt16 type;
+        sal_uInt32 count;
+        sal_uInt32 offset;
+    };
+
+    Orientation convertToOrientation(sal_Int32 value);
+
+public :
+    Exif();
+    virtual ~Exif();
+
+    Orientation getOrientation();
+    sal_Int32 getRotation();
+
+    void setOrientation(Orientation orientation);
+
+    bool read(SvStream& rStream);
+    bool write(SvStream& rStream);
+
+};
+
+
+#endif // _EXIF_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/JpegTransform.cxx b/vcl/source/filter/jpeg/JpegTransform.cxx
new file mode 100644
index 000000000000..789d30334a1b
--- /dev/null
+++ b/vcl/source/filter/jpeg/JpegTransform.cxx
@@ -0,0 +1,49 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+extern "C"
+{
+    #include "jpeg.h"
+}
+
+#include "JpegTransform.hxx"
+
+JpegTransform::JpegTransform(SvStream& rInputStream, SvStream& rOutputStream) :
+    maRotate       ( 0 ),
+    mrInputStream  ( rInputStream ),
+    mrOutputStream ( rOutputStream )
+{}
+
+JpegTransform::~JpegTransform()
+{}
+
+bool JpegTransform::perform()
+{
+    long result = Transform( &mrInputStream, &mrOutputStream, maRotate );
+    return result;
+}
+
+void JpegTransform::setRotate(sal_uInt16 aRotate)
+{
+    maRotate = aRotate;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/JpegTransform.hxx b/vcl/source/filter/jpeg/JpegTransform.hxx
new file mode 100644
index 000000000000..dc71c059a19e
--- /dev/null
+++ b/vcl/source/filter/jpeg/JpegTransform.hxx
@@ -0,0 +1,43 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef _JPEG_TRANSFROM_HXX
+#define _JPEG_TRANSFORM_HXX
+
+#include <tools/solar.h>
+#include <vcl/graph.hxx>
+
+class JpegTransform
+{
+    sal_uInt16 maRotate;
+    SvStream&  mrInputStream;
+    SvStream&  mrOutputStream;
+
+public:
+
+    JpegTransform(SvStream& rInputStream, SvStream& rOutputStream);
+    virtual ~JpegTransform();
+
+    void setRotate(sal_uInt16 aRotate);
+    bool perform();
+};
+
+#endif // _JPEG_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/jinclude.h b/vcl/source/filter/jpeg/jinclude.h
new file mode 100644
index 000000000000..121fbecdf1ea
--- /dev/null
+++ b/vcl/source/filter/jpeg/jinclude.h
@@ -0,0 +1,91 @@
+/*
+ * jinclude.h
+ *
+ * Copyright (C) 1991-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file exists to provide a single place to fix any problems with
+ * including the wrong system include files.  (Common problems are taken
+ * care of by the standard jconfig symbols, but on really weird systems
+ * you may have to edit this file.)
+ *
+ * NOTE: this file is NOT intended to be included by applications using the
+ * JPEG library.  Most applications need only include jpeglib.h.
+ */
+
+
+/* Include auto-config file to find out which system include files we need. */
+
+#include "jconfig.h"        /* auto configuration options */
+#define JCONFIG_INCLUDED    /* so that jpeglib.h doesn't do it again */
+
+/*
+ * We need the NULL macro and size_t typedef.
+ * On an ANSI-conforming system it is sufficient to include <stddef.h>.
+ * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to
+ * pull in <sys/types.h> as well.
+ * Note that the core JPEG library does not require <stdio.h>;
+ * only the default error handler and data source/destination modules do.
+ * But we must pull it in because of the references to FILE in jpeglib.h.
+ * You can remove those references if you want to compile without <stdio.h>.
+ */
+
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef NEED_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#include <stdio.h>
+
+/*
+ * We need memory copying and zeroing functions, plus strncpy().
+ * ANSI and System V implementations declare these in <string.h>.
+ * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().
+ * Some systems may declare memset and memcpy in <memory.h>.
+ *
+ * NOTE: we assume the size parameters to these functions are of type size_t.
+ * Change the casts in these macros if not!
+ */
+
+#ifdef NEED_BSD_STRINGS
+
+#include <strings.h>
+#define MEMZERO(target,size)    bzero((void *)(target), (size_t)(size))
+#define MEMCOPY(dest,src,size)  bcopy((const void *)(src), (void *)(dest), (size_t)(size))
+
+#else /* not BSD, assume ANSI/SysV string lib */
+
+#include <string.h>
+#define MEMZERO(target,size)    memset((void *)(target), 0, (size_t)(size))
+#define MEMCOPY(dest,src,size)  memcpy((void *)(dest), (const void *)(src), (size_t)(size))
+
+#endif
+
+/*
+ * In ANSI C, and indeed any rational implementation, size_t is also the
+ * type returned by sizeof().  However, it seems there are some irrational
+ * implementations out there, in which sizeof() returns an int even though
+ * size_t is defined as long or unsigned long.  To ensure consistent results
+ * we always use this SIZEOF() macro in place of using sizeof() directly.
+ */
+
+#define SIZEOF(object)  ((size_t) sizeof(object))
+
+/*
+ * The modules that use fread() and fwrite() always invoke them through
+ * these macros.  On some systems you may need to twiddle the argument casts.
+ * CAUTION: argument order is different from underlying functions!
+ */
+
+#define JFREAD(file,buf,sizeofbuf)  \
+  ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
+#define JFWRITE(file,buf,sizeofbuf)  \
+  ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
diff --git a/vcl/source/filter/jpeg/jpeg.h b/vcl/source/filter/jpeg/jpeg.h
index ffb47e76363b..13ccf4e67ee2 100644
--- a/vcl/source/filter/jpeg/jpeg.h
+++ b/vcl/source/filter/jpeg/jpeg.h
@@ -59,6 +59,8 @@ void*   CreateBitmapFromJPEGReader( void* pJPEGReader, void* pJPEGCreateBitmapPa
    the preview size hint should be redone */
 void    SetJpegPreviewSizeHint( int nWidth, int nHeight );
 
+long    Transform( void* pInputStream, void* pOutputStream, long nAngle );
+
 #endif
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/jpegc.c b/vcl/source/filter/jpeg/jpegc.c
index 4803984180d2..c05a219dbf00 100644
--- a/vcl/source/filter/jpeg/jpegc.c
+++ b/vcl/source/filter/jpeg/jpegc.c
@@ -22,9 +22,11 @@
 #include <setjmp.h>
 #include <jpeglib.h>
 #include <jerror.h>
+
 #include <rtl/alloc.h>
 #include <osl/diagnose.h>
 
+#include "transupp.h"
 #include "jpeg.h"
 
 struct ErrorManagerStruct
@@ -43,7 +45,6 @@ METHODDEF( void ) errorExit (j_common_ptr cinfo)
     longjmp(error->setjmp_buffer, 1);
 }
 
-
 METHODDEF( void ) outputMessage (j_common_ptr cinfo)
 {
     char buffer[JMSG_LENGTH_MAX];
@@ -86,13 +87,13 @@ void ReadJPEG( void* pJPEGReader, void* pInputStream, long* pLines )
 
     jpeg_create_decompress( &cinfo );
     jpeg_svstream_src( &cinfo, pInputStream );
-    jpeg_read_header( &cinfo, sal_True );
+    jpeg_read_header( &cinfo, TRUE );
 
     cinfo.scale_num = 1;
     cinfo.scale_denom = 1;
     cinfo.output_gamma = 1.0;
-    cinfo.raw_data_out = sal_False;
-    cinfo.quantize_colors = sal_False;
+    cinfo.raw_data_out = FALSE;
+    cinfo.quantize_colors = FALSE;
     if ( cinfo.jpeg_color_space == JCS_YCbCr )
         cinfo.out_color_space = JCS_RGB;
     else if ( cinfo.jpeg_color_space == JCS_YCCK )
@@ -131,8 +132,8 @@ void ReadJPEG( void* pJPEGReader, void* pInputStream, long* pLines )
         if( cinfo.scale_denom > 1 )
         {
             cinfo.dct_method            = JDCT_FASTEST;
-            cinfo.do_fancy_upsampling   = sal_False;
-            cinfo.do_block_smoothing    = sal_False;
+            cinfo.do_fancy_upsampling   = FALSE;
+            cinfo.do_block_smoothing    = FALSE;
         }
     }
 
@@ -221,7 +222,8 @@ void ReadJPEG( void* pJPEGReader, void* pInputStream, long* pLines )
 
 long WriteJPEG( void* pJPEGWriter, void* pOutputStream,
                 long nWidth, long nHeight, long bGreys,
-                long nQualityPercent, long aChromaSubsampling, void* pCallbackData )
+                long nQualityPercent, long aChromaSubsampling,
+                void* pCallbackData )
 {
     struct jpeg_compress_struct cinfo;
     struct ErrorManagerStruct   jerr;
@@ -255,7 +257,7 @@ long WriteJPEG( void* pJPEGWriter, void* pOutputStream,
     }
 
     jpeg_set_defaults( &cinfo );
-    jpeg_set_quality( &cinfo, (int) nQualityPercent, sal_False );
+    jpeg_set_quality( &cinfo, (int) nQualityPercent, FALSE );
 
     if ( ( nWidth > 128 ) || ( nHeight > 128 ) )
         jpeg_simple_progression( &cinfo );
@@ -276,7 +278,7 @@ long WriteJPEG( void* pJPEGWriter, void* pOutputStream,
         cinfo.comp_info[0].v_samp_factor = 2;
     }
 
-    jpeg_start_compress( &cinfo, sal_True );
+    jpeg_start_compress( &cinfo, TRUE );
 
     for( nY = 0; nY < nHeight; nY++ )
     {
@@ -300,4 +302,88 @@ long WriteJPEG( void* pJPEGWriter, void* pOutputStream,
     return 1;
 }
 
+long Transform(void* pInputStream, void* pOutputStream, long nAngle)
+{
+    jpeg_transform_info aTransformOption;
+    JCOPY_OPTION        aCopyOption = JCOPYOPT_ALL;
+
+    struct jpeg_decompress_struct   aSourceInfo;
+    struct jpeg_compress_struct     aDestinationInfo;
+    struct ErrorManagerStruct       aSourceError;
+    struct ErrorManagerStruct       aDestinationError;
+
+    jvirt_barray_ptr* aSourceCoefArrays      = 0;
+    jvirt_barray_ptr* aDestinationCoefArrays = 0;
+
+    aTransformOption.force_grayscale = FALSE;
+    aTransformOption.trim            = FALSE;
+    aTransformOption.perfect         = FALSE;
+    aTransformOption.crop            = FALSE;
+
+    // Angle to transform option
+    // 90 Clockwise = 270 Counterclockwise
+    switch (nAngle)
+    {
+        case 2700:
+            aTransformOption.transform  = JXFORM_ROT_90;
+            break;
+        case 1800:
+            aTransformOption.transform  = JXFORM_ROT_180;
+            break;
+        case 900:
+            aTransformOption.transform  = JXFORM_ROT_270;
+            break;
+        default:
+            aTransformOption.transform  = JXFORM_NONE;
+    }
+
+    // Decompression
+    aSourceInfo.err                 = jpeg_std_error(&aSourceError.pub);
+    aSourceInfo.err->error_exit     = errorExit;
+    aSourceInfo.err->output_message = outputMessage;
+
+    // Compression
+    aDestinationInfo.err                 = jpeg_std_error(&aDestinationError.pub);
+    aDestinationInfo.err->error_exit     = errorExit;
+    aDestinationInfo.err->output_message = outputMessage;
+
+    aDestinationInfo.optimize_coding = TRUE;
+
+    if (setjmp(aSourceError.setjmp_buffer) || setjmp(aDestinationError.setjmp_buffer))
+    {
+        jpeg_destroy_decompress(&aSourceInfo);
+        jpeg_destroy_compress(&aDestinationInfo);
+        return 0;
+    }
+
+    jpeg_create_decompress(&aSourceInfo);
+    jpeg_create_compress(&aDestinationInfo);
+
+    jpeg_svstream_src (&aSourceInfo, pInputStream);
+
+    jcopy_markers_setup(&aSourceInfo, aCopyOption);
+    jpeg_read_header(&aSourceInfo, 1);
+    jtransform_request_workspace(&aSourceInfo, &aTransformOption);
+
+    aSourceCoefArrays = jpeg_read_coefficients(&aSourceInfo);
+    jpeg_copy_critical_parameters(&aSourceInfo, &aDestinationInfo);
+
+    aDestinationCoefArrays = jtransform_adjust_parameters(&aSourceInfo, &aDestinationInfo, aSourceCoefArrays, &aTransformOption);
+    jpeg_svstream_dest (&aDestinationInfo, pOutputStream);
+
+    // Compute optimal Huffman coding tables instead of precomuted tables
+    aDestinationInfo.optimize_coding = 1;
+    jpeg_write_coefficients(&aDestinationInfo, aDestinationCoefArrays);
+    jcopy_markers_execute(&aSourceInfo, &aDestinationInfo, aCopyOption);
+    jtransform_execute_transformation(&aSourceInfo, &aDestinationInfo, aSourceCoefArrays, &aTransformOption);
+
+    jpeg_finish_compress(&aDestinationInfo);
+    jpeg_destroy_compress(&aDestinationInfo);
+
+    jpeg_finish_decompress(&aSourceInfo);
+    jpeg_destroy_decompress(&aSourceInfo);
+
+    return 1;
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/source/filter/jpeg/jpegcomp.h b/vcl/source/filter/jpeg/jpegcomp.h
new file mode 100644
index 000000000000..ed9eeab8a1bb
--- /dev/null
+++ b/vcl/source/filter/jpeg/jpegcomp.h
@@ -0,0 +1,30 @@
+/*
+ * jpegcomp.h
+ *
+ * Copyright (C) 2010, D. R. Commander
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * JPEG compatibility macros
+ * These declarations are considered internal to the JPEG library; most
+ * applications using the library shouldn't need to include this file.
+ */
+
+#if JPEG_LIB_VERSION >= 70
+#define _DCT_scaled_size DCT_h_scaled_size
+#define _DCT_h_scaled_size DCT_h_scaled_size
+#define _DCT_v_scaled_size DCT_v_scaled_size
+#define _min_DCT_scaled_size min_DCT_h_scaled_size
+#define _min_DCT_h_scaled_size min_DCT_h_scaled_size
+#define _min_DCT_v_scaled_size min_DCT_v_scaled_size
+#define _jpeg_width jpeg_width
+#define _jpeg_height jpeg_height
+#else
+#define _DCT_scaled_size DCT_scaled_size
+#define _DCT_h_scaled_size DCT_scaled_size
+#define _DCT_v_scaled_size DCT_scaled_size
+#define _min_DCT_scaled_size min_DCT_scaled_size
+#define _min_DCT_h_scaled_size min_DCT_scaled_size
+#define _min_DCT_v_scaled_size min_DCT_scaled_size
+#define _jpeg_width image_width
+#define _jpeg_height image_height
+#endif
diff --git a/vcl/source/filter/jpeg/transupp.c b/vcl/source/filter/jpeg/transupp.c
new file mode 100644
index 000000000000..24b766746f61
--- /dev/null
+++ b/vcl/source/filter/jpeg/transupp.c
@@ -0,0 +1,1628 @@
+/*
+ * transupp.c
+ *
+ * This file was part of the Independent JPEG Group's software:
+ * Copyright (C) 1997-2011, Thomas G. Lane, Guido Vollbeding.
+ * Modifications:
+ * Copyright (C) 2010, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains image transformation routines and other utility code
+ * used by the jpegtran sample application.  These are NOT part of the core
+ * JPEG library.  But we keep these routines separate from jpegtran.c to
+ * ease the task of maintaining jpegtran-like programs that have other user
+ * interfaces.
+ */
+
+/* Although this file really shouldn't have access to the library internals,
+ * it's helpful to let it call jround_up() and jcopy_block_row().
+ */
+#define JPEG_INTERNALS
+
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "transupp.h"       /* My own external interface */
+#include "jpegcomp.h"
+#include <ctype.h>      /* to declare isdigit() */
+
+
+#if JPEG_LIB_VERSION >= 70
+#define dstinfo_min_DCT_h_scaled_size dstinfo->min_DCT_h_scaled_size
+#define dstinfo_min_DCT_v_scaled_size dstinfo->min_DCT_v_scaled_size
+#else
+#define dstinfo_min_DCT_h_scaled_size DCTSIZE
+#define dstinfo_min_DCT_v_scaled_size DCTSIZE
+#endif
+
+
+#if TRANSFORMS_SUPPORTED
+
+/*
+ * Lossless image transformation routines.  These routines work on DCT
+ * coefficient arrays and thus do not require any lossy decompression
+ * or recompression of the image.
+ * Thanks to Guido Vollbeding for the initial design and code of this feature,
+ * and to Ben Jackson for introducing the cropping feature.
+ *
+ * Horizontal flipping is done in-place, using a single top-to-bottom
+ * pass through the virtual source array.  It will thus be much the
+ * fastest option for images larger than main memory.
+ *
+ * The other routines require a set of destination virtual arrays, so they
+ * need twice as much memory as jpegtran normally does.  The destination
+ * arrays are always written in normal scan order (top to bottom) because
+ * the virtual array manager expects this.  The source arrays will be scanned
+ * in the corresponding order, which means multiple passes through the source
+ * arrays for most of the transforms.  That could result in much thrashing
+ * if the image is larger than main memory.
+ *
+ * If cropping or trimming is involved, the destination arrays may be smaller
+ * than the source arrays.  Note it is not possible to do horizontal flip
+ * in-place when a nonzero Y crop offset is specified, since we'd have to move
+ * data from one block row to another but the virtual array manager doesn't
+ * guarantee we can touch more than one row at a time.  So in that case,
+ * we have to use a separate destination array.
+ *
+ * Some notes about the operating environment of the individual transform
+ * routines:
+ * 1. Both the source and destination virtual arrays are allocated from the
+ *    source JPEG object, and therefore should be manipulated by calling the
+ *    source's memory manager.
+ * 2. The destination's component count should be used.  It may be smaller
+ *    than the source's when forcing to grayscale.
+ * 3. Likewise the destination's sampling factors should be used.  When
+ *    forcing to grayscale the destination's sampling factors will be all 1,
+ *    and we may as well take that as the effective iMCU size.
+ * 4. When "trim" is in effect, the destination's dimensions will be the
+ *    trimmed values but the source's will be untrimmed.
+ * 5. When "crop" is in effect, the destination's dimensions will be the
+ *    cropped values but the source's will be uncropped.  Each transform
+ *    routine is responsible for picking up source data starting at the
+ *    correct X and Y offset for the crop region.  (The X and Y offsets
+ *    passed to the transform routines are measured in iMCU blocks of the
+ *    destination.)
+ * 6. All the routines assume that the source and destination buffers are
+ *    padded out to a full iMCU boundary.  This is true, although for the
+ *    source buffer it is an undocumented property of jdcoefct.c.
+ */
+
+
+LOCAL(void)
+do_crop (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+     JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+     jvirt_barray_ptr *src_coef_arrays,
+     jvirt_barray_ptr *dst_coef_arrays)
+/* Crop.  This is only used when no rotate/flip is requested with the crop. */
+{
+  JDIMENSION dst_blk_y, x_crop_blocks, y_crop_blocks;
+  int ci, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  jpeg_component_info *compptr;
+
+  /* We simply have to copy the right amount of data (the destination's
+   * image size) starting at the given X and Y offsets in the source.
+   */
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      src_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+     dst_blk_y + y_crop_blocks,
+     (JDIMENSION) compptr->v_samp_factor, FALSE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    jcopy_block_row(src_buffer[offset_y] + x_crop_blocks,
+            dst_buffer[offset_y],
+            compptr->width_in_blocks);
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_flip_h_no_crop (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+           JDIMENSION x_crop_offset,
+           jvirt_barray_ptr *src_coef_arrays)
+/* Horizontal flip; done in-place, so no separate dest array is required.
+ * NB: this only works when y_crop_offset is zero.
+ */
+{
+  JDIMENSION MCU_cols, comp_width, blk_x, blk_y, x_crop_blocks;
+  int ci, k, offset_y;
+  JBLOCKARRAY buffer;
+  JCOEFPTR ptr1, ptr2;
+  JCOEF temp1, temp2;
+  jpeg_component_info *compptr;
+
+  /* Horizontal mirroring of DCT blocks is accomplished by swapping
+   * pairs of blocks in-place.  Within a DCT block, we perform horizontal
+   * mirroring by changing the signs of odd-numbered columns.
+   * Partial iMCUs at the right edge are left untouched.
+   */
+  MCU_cols = srcinfo->output_width /
+    (dstinfo->max_h_samp_factor * dstinfo_min_DCT_h_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = MCU_cols * compptr->h_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    for (blk_y = 0; blk_y < compptr->height_in_blocks;
+     blk_y += compptr->v_samp_factor) {
+      buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, src_coef_arrays[ci], blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    /* Do the mirroring */
+    for (blk_x = 0; blk_x * 2 < comp_width; blk_x++) {
+      ptr1 = buffer[offset_y][blk_x];
+      ptr2 = buffer[offset_y][comp_width - blk_x - 1];
+      /* this unrolled loop doesn't need to know which row it's on... */
+      for (k = 0; k < DCTSIZE2; k += 2) {
+        temp1 = *ptr1;  /* swap even column */
+        temp2 = *ptr2;
+        *ptr1++ = temp2;
+        *ptr2++ = temp1;
+        temp1 = *ptr1;  /* swap odd column with sign change */
+        temp2 = *ptr2;
+        *ptr1++ = -temp2;
+        *ptr2++ = -temp1;
+      }
+    }
+    if (x_crop_blocks > 0) {
+      /* Now left-justify the portion of the data to be kept.
+       * We can't use a single jcopy_block_row() call because that routine
+       * depends on memcpy(), whose behavior is unspecified for overlapping
+       * source and destination areas.  Sigh.
+       */
+      for (blk_x = 0; blk_x < compptr->width_in_blocks; blk_x++) {
+        jcopy_block_row(buffer[offset_y] + blk_x + x_crop_blocks,
+                buffer[offset_y] + blk_x,
+                (JDIMENSION) 1);
+      }
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_flip_h (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+       JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+       jvirt_barray_ptr *src_coef_arrays,
+       jvirt_barray_ptr *dst_coef_arrays)
+/* Horizontal flip in general cropping case */
+{
+  JDIMENSION MCU_cols, comp_width, dst_blk_x, dst_blk_y;
+  JDIMENSION x_crop_blocks, y_crop_blocks;
+  int ci, k, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JBLOCKROW src_row_ptr, dst_row_ptr;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  /* Here we must output into a separate array because we can't touch
+   * different rows of a single virtual array simultaneously.  Otherwise,
+   * this is essentially the same as the routine above.
+   */
+  MCU_cols = srcinfo->output_width /
+    (dstinfo->max_h_samp_factor * dstinfo_min_DCT_h_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = MCU_cols * compptr->h_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      src_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+     dst_blk_y + y_crop_blocks,
+     (JDIMENSION) compptr->v_samp_factor, FALSE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    dst_row_ptr = dst_buffer[offset_y];
+    src_row_ptr = src_buffer[offset_y];
+    for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
+      if (x_crop_blocks + dst_blk_x < comp_width) {
+        /* Do the mirrorable blocks */
+        dst_ptr = dst_row_ptr[dst_blk_x];
+        src_ptr = src_row_ptr[comp_width - x_crop_blocks - dst_blk_x - 1];
+        /* this unrolled loop doesn't need to know which row it's on... */
+        for (k = 0; k < DCTSIZE2; k += 2) {
+          *dst_ptr++ = *src_ptr++;   /* copy even column */
+          *dst_ptr++ = - *src_ptr++; /* copy odd column with sign change */
+        }
+      } else {
+        /* Copy last partial block(s) verbatim */
+        jcopy_block_row(src_row_ptr + dst_blk_x + x_crop_blocks,
+                dst_row_ptr + dst_blk_x,
+                (JDIMENSION) 1);
+      }
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_flip_v (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+       JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+       jvirt_barray_ptr *src_coef_arrays,
+       jvirt_barray_ptr *dst_coef_arrays)
+/* Vertical flip */
+{
+  JDIMENSION MCU_rows, comp_height, dst_blk_x, dst_blk_y;
+  JDIMENSION x_crop_blocks, y_crop_blocks;
+  int ci, i, j, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JBLOCKROW src_row_ptr, dst_row_ptr;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  /* We output into a separate array because we can't touch different
+   * rows of the source virtual array simultaneously.  Otherwise, this
+   * is a pretty straightforward analog of horizontal flip.
+   * Within a DCT block, vertical mirroring is done by changing the signs
+   * of odd-numbered rows.
+   * Partial iMCUs at the bottom edge are copied verbatim.
+   */
+  MCU_rows = srcinfo->output_height /
+    (dstinfo->max_v_samp_factor * dstinfo_min_DCT_v_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_height = MCU_rows * compptr->v_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      if (y_crop_blocks + dst_blk_y < comp_height) {
+    /* Row is within the mirrorable area. */
+    src_buffer = (*srcinfo->mem->access_virt_barray)
+      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+       comp_height - y_crop_blocks - dst_blk_y -
+       (JDIMENSION) compptr->v_samp_factor,
+       (JDIMENSION) compptr->v_samp_factor, FALSE);
+      } else {
+    /* Bottom-edge blocks will be copied verbatim. */
+    src_buffer = (*srcinfo->mem->access_virt_barray)
+      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+       dst_blk_y + y_crop_blocks,
+       (JDIMENSION) compptr->v_samp_factor, FALSE);
+      }
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    if (y_crop_blocks + dst_blk_y < comp_height) {
+      /* Row is within the mirrorable area. */
+      dst_row_ptr = dst_buffer[offset_y];
+      src_row_ptr = src_buffer[compptr->v_samp_factor - offset_y - 1];
+      src_row_ptr += x_crop_blocks;
+      for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
+           dst_blk_x++) {
+        dst_ptr = dst_row_ptr[dst_blk_x];
+        src_ptr = src_row_ptr[dst_blk_x];
+        for (i = 0; i < DCTSIZE; i += 2) {
+          /* copy even row */
+          for (j = 0; j < DCTSIZE; j++)
+        *dst_ptr++ = *src_ptr++;
+          /* copy odd row with sign change */
+          for (j = 0; j < DCTSIZE; j++)
+        *dst_ptr++ = - *src_ptr++;
+        }
+      }
+    } else {
+      /* Just copy row verbatim. */
+      jcopy_block_row(src_buffer[offset_y] + x_crop_blocks,
+              dst_buffer[offset_y],
+              compptr->width_in_blocks);
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_transpose (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+          JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+          jvirt_barray_ptr *src_coef_arrays,
+          jvirt_barray_ptr *dst_coef_arrays)
+/* Transpose source into destination */
+{
+  JDIMENSION dst_blk_x, dst_blk_y, x_crop_blocks, y_crop_blocks;
+  int ci, i, j, offset_x, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  /* Transposing pixels within a block just requires transposing the
+   * DCT coefficients.
+   * Partial iMCUs at the edges require no special treatment; we simply
+   * process all the available DCT blocks for every component.
+   */
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
+         dst_blk_x += compptr->h_samp_factor) {
+      src_buffer = (*srcinfo->mem->access_virt_barray)
+        ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+         dst_blk_x + x_crop_blocks,
+         (JDIMENSION) compptr->h_samp_factor, FALSE);
+      for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
+        dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
+        src_ptr = src_buffer[offset_x][dst_blk_y + offset_y + y_crop_blocks];
+        for (i = 0; i < DCTSIZE; i++)
+          for (j = 0; j < DCTSIZE; j++)
+        dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+      }
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_rot_90 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+       JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+       jvirt_barray_ptr *src_coef_arrays,
+       jvirt_barray_ptr *dst_coef_arrays)
+/* 90 degree rotation is equivalent to
+ *   1. Transposing the image;
+ *   2. Horizontal mirroring.
+ * These two steps are merged into a single processing routine.
+ */
+{
+  JDIMENSION MCU_cols, comp_width, dst_blk_x, dst_blk_y;
+  JDIMENSION x_crop_blocks, y_crop_blocks;
+  int ci, i, j, offset_x, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  /* Because of the horizontal mirror step, we can't process partial iMCUs
+   * at the (output) right edge properly.  They just get transposed and
+   * not mirrored.
+   */
+  MCU_cols = srcinfo->output_height /
+    (dstinfo->max_h_samp_factor * dstinfo_min_DCT_h_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = MCU_cols * compptr->h_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
+         dst_blk_x += compptr->h_samp_factor) {
+      if (x_crop_blocks + dst_blk_x < comp_width) {
+        /* Block is within the mirrorable area. */
+        src_buffer = (*srcinfo->mem->access_virt_barray)
+          ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+           comp_width - x_crop_blocks - dst_blk_x -
+           (JDIMENSION) compptr->h_samp_factor,
+           (JDIMENSION) compptr->h_samp_factor, FALSE);
+      } else {
+        /* Edge blocks are transposed but not mirrored. */
+        src_buffer = (*srcinfo->mem->access_virt_barray)
+          ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+           dst_blk_x + x_crop_blocks,
+           (JDIMENSION) compptr->h_samp_factor, FALSE);
+      }
+      for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
+        dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
+        if (x_crop_blocks + dst_blk_x < comp_width) {
+          /* Block is within the mirrorable area. */
+          src_ptr = src_buffer[compptr->h_samp_factor - offset_x - 1]
+        [dst_blk_y + offset_y + y_crop_blocks];
+          for (i = 0; i < DCTSIZE; i++) {
+        for (j = 0; j < DCTSIZE; j++)
+          dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+        i++;
+        for (j = 0; j < DCTSIZE; j++)
+          dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j];
+          }
+        } else {
+          /* Edge blocks are transposed but not mirrored. */
+          src_ptr = src_buffer[offset_x]
+        [dst_blk_y + offset_y + y_crop_blocks];
+          for (i = 0; i < DCTSIZE; i++)
+        for (j = 0; j < DCTSIZE; j++)
+          dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+        }
+      }
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_rot_270 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+        JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+        jvirt_barray_ptr *src_coef_arrays,
+        jvirt_barray_ptr *dst_coef_arrays)
+/* 270 degree rotation is equivalent to
+ *   1. Horizontal mirroring;
+ *   2. Transposing the image.
+ * These two steps are merged into a single processing routine.
+ */
+{
+  JDIMENSION MCU_rows, comp_height, dst_blk_x, dst_blk_y;
+  JDIMENSION x_crop_blocks, y_crop_blocks;
+  int ci, i, j, offset_x, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  /* Because of the horizontal mirror step, we can't process partial iMCUs
+   * at the (output) bottom edge properly.  They just get transposed and
+   * not mirrored.
+   */
+  MCU_rows = srcinfo->output_width /
+    (dstinfo->max_v_samp_factor * dstinfo_min_DCT_v_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_height = MCU_rows * compptr->v_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
+         dst_blk_x += compptr->h_samp_factor) {
+      src_buffer = (*srcinfo->mem->access_virt_barray)
+        ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+         dst_blk_x + x_crop_blocks,
+         (JDIMENSION) compptr->h_samp_factor, FALSE);
+      for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
+        dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
+        if (y_crop_blocks + dst_blk_y < comp_height) {
+          /* Block is within the mirrorable area. */
+          src_ptr = src_buffer[offset_x]
+        [comp_height - y_crop_blocks - dst_blk_y - offset_y - 1];
+          for (i = 0; i < DCTSIZE; i++) {
+        for (j = 0; j < DCTSIZE; j++) {
+          dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+          j++;
+          dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j];
+        }
+          }
+        } else {
+          /* Edge blocks are transposed but not mirrored. */
+          src_ptr = src_buffer[offset_x]
+        [dst_blk_y + offset_y + y_crop_blocks];
+          for (i = 0; i < DCTSIZE; i++)
+        for (j = 0; j < DCTSIZE; j++)
+          dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+        }
+      }
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_rot_180 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+        JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+        jvirt_barray_ptr *src_coef_arrays,
+        jvirt_barray_ptr *dst_coef_arrays)
+/* 180 degree rotation is equivalent to
+ *   1. Vertical mirroring;
+ *   2. Horizontal mirroring.
+ * These two steps are merged into a single processing routine.
+ */
+{
+  JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height, dst_blk_x, dst_blk_y;
+  JDIMENSION x_crop_blocks, y_crop_blocks;
+  int ci, i, j, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JBLOCKROW src_row_ptr, dst_row_ptr;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  MCU_cols = srcinfo->output_width /
+    (dstinfo->max_h_samp_factor * dstinfo_min_DCT_h_scaled_size);
+  MCU_rows = srcinfo->output_height /
+    (dstinfo->max_v_samp_factor * dstinfo_min_DCT_v_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = MCU_cols * compptr->h_samp_factor;
+    comp_height = MCU_rows * compptr->v_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      if (y_crop_blocks + dst_blk_y < comp_height) {
+    /* Row is within the vertically mirrorable area. */
+    src_buffer = (*srcinfo->mem->access_virt_barray)
+      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+       comp_height - y_crop_blocks - dst_blk_y -
+       (JDIMENSION) compptr->v_samp_factor,
+       (JDIMENSION) compptr->v_samp_factor, FALSE);
+      } else {
+    /* Bottom-edge rows are only mirrored horizontally. */
+    src_buffer = (*srcinfo->mem->access_virt_barray)
+      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+       dst_blk_y + y_crop_blocks,
+       (JDIMENSION) compptr->v_samp_factor, FALSE);
+      }
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    dst_row_ptr = dst_buffer[offset_y];
+    if (y_crop_blocks + dst_blk_y < comp_height) {
+      /* Row is within the mirrorable area. */
+      src_row_ptr = src_buffer[compptr->v_samp_factor - offset_y - 1];
+      for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
+        dst_ptr = dst_row_ptr[dst_blk_x];
+        if (x_crop_blocks + dst_blk_x < comp_width) {
+          /* Process the blocks that can be mirrored both ways. */
+          src_ptr = src_row_ptr[comp_width - x_crop_blocks - dst_blk_x - 1];
+          for (i = 0; i < DCTSIZE; i += 2) {
+        /* For even row, negate every odd column. */
+        for (j = 0; j < DCTSIZE; j += 2) {
+          *dst_ptr++ = *src_ptr++;
+          *dst_ptr++ = - *src_ptr++;
+        }
+        /* For odd row, negate every even column. */
+        for (j = 0; j < DCTSIZE; j += 2) {
+          *dst_ptr++ = - *src_ptr++;
+          *dst_ptr++ = *src_ptr++;
+        }
+          }
+        } else {
+          /* Any remaining right-edge blocks are only mirrored vertically. */
+          src_ptr = src_row_ptr[x_crop_blocks + dst_blk_x];
+          for (i = 0; i < DCTSIZE; i += 2) {
+        for (j = 0; j < DCTSIZE; j++)
+          *dst_ptr++ = *src_ptr++;
+        for (j = 0; j < DCTSIZE; j++)
+          *dst_ptr++ = - *src_ptr++;
+          }
+        }
+      }
+    } else {
+      /* Remaining rows are just mirrored horizontally. */
+      src_row_ptr = src_buffer[offset_y];
+      for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
+        if (x_crop_blocks + dst_blk_x < comp_width) {
+          /* Process the blocks that can be mirrored. */
+          dst_ptr = dst_row_ptr[dst_blk_x];
+          src_ptr = src_row_ptr[comp_width - x_crop_blocks - dst_blk_x - 1];
+          for (i = 0; i < DCTSIZE2; i += 2) {
+        *dst_ptr++ = *src_ptr++;
+        *dst_ptr++ = - *src_ptr++;
+          }
+        } else {
+          /* Any remaining right-edge blocks are only copied. */
+          jcopy_block_row(src_row_ptr + dst_blk_x + x_crop_blocks,
+                  dst_row_ptr + dst_blk_x,
+                  (JDIMENSION) 1);
+        }
+      }
+    }
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_transverse (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+           JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+           jvirt_barray_ptr *src_coef_arrays,
+           jvirt_barray_ptr *dst_coef_arrays)
+/* Transverse transpose is equivalent to
+ *   1. 180 degree rotation;
+ *   2. Transposition;
+ * or
+ *   1. Horizontal mirroring;
+ *   2. Transposition;
+ *   3. Horizontal mirroring.
+ * These steps are merged into a single processing routine.
+ */
+{
+  JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height, dst_blk_x, dst_blk_y;
+  JDIMENSION x_crop_blocks, y_crop_blocks;
+  int ci, i, j, offset_x, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  JCOEFPTR src_ptr, dst_ptr;
+  jpeg_component_info *compptr;
+
+  MCU_cols = srcinfo->output_height /
+    (dstinfo->max_h_samp_factor * dstinfo_min_DCT_h_scaled_size);
+  MCU_rows = srcinfo->output_width /
+    (dstinfo->max_v_samp_factor * dstinfo_min_DCT_v_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = MCU_cols * compptr->h_samp_factor;
+    comp_height = MCU_rows * compptr->v_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+     dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+    ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+     (JDIMENSION) compptr->v_samp_factor, TRUE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+    for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
+         dst_blk_x += compptr->h_samp_factor) {
+      if (x_crop_blocks + dst_blk_x < comp_width) {
+        /* Block is within the mirrorable area. */
+        src_buffer = (*srcinfo->mem->access_virt_barray)
+          ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+           comp_width - x_crop_blocks - dst_blk_x -
+           (JDIMENSION) compptr->h_samp_factor,
+           (JDIMENSION) compptr->h_samp_factor, FALSE);
+      } else {
+        src_buffer = (*srcinfo->mem->access_virt_barray)
+          ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+           dst_blk_x + x_crop_blocks,
+           (JDIMENSION) compptr->h_samp_factor, FALSE);
+      }
+      for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
+        dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
+        if (y_crop_blocks + dst_blk_y < comp_height) {
+          if (x_crop_blocks + dst_blk_x < comp_width) {
+        /* Block is within the mirrorable area. */
+        src_ptr = src_buffer[compptr->h_samp_factor - offset_x - 1]
+          [comp_height - y_crop_blocks - dst_blk_y - offset_y - 1];
+        for (i = 0; i < DCTSIZE; i++) {
+          for (j = 0; j < DCTSIZE; j++) {
+            dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+            j++;
+            dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j];
+          }
+          i++;
+          for (j = 0; j < DCTSIZE; j++) {
+            dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j];
+            j++;
+            dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+          }
+        }
+          } else {
+        /* Right-edge blocks are mirrored in y only */
+        src_ptr = src_buffer[offset_x]
+          [comp_height - y_crop_blocks - dst_blk_y - offset_y - 1];
+        for (i = 0; i < DCTSIZE; i++) {
+          for (j = 0; j < DCTSIZE; j++) {
+            dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+            j++;
+            dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j];
+          }
+        }
+          }
+        } else {
+          if (x_crop_blocks + dst_blk_x < comp_width) {
+        /* Bottom-edge blocks are mirrored in x only */
+        src_ptr = src_buffer[compptr->h_samp_factor - offset_x - 1]
+          [dst_blk_y + offset_y + y_crop_blocks];
+        for (i = 0; i < DCTSIZE; i++) {
+          for (j = 0; j < DCTSIZE; j++)
+            dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+          i++;
+          for (j = 0; j < DCTSIZE; j++)
+            dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j];
+        }
+          } else {
+        /* At lower right corner, just transpose, no mirroring */
+        src_ptr = src_buffer[offset_x]
+          [dst_blk_y + offset_y + y_crop_blocks];
+        for (i = 0; i < DCTSIZE; i++)
+          for (j = 0; j < DCTSIZE; j++)
+            dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
+          }
+        }
+      }
+    }
+      }
+    }
+  }
+}
+
+
+/* Parse an unsigned integer: subroutine for jtransform_parse_crop_spec.
+ * Returns TRUE if valid integer found, FALSE if not.
+ * *strptr is advanced over the digit string, and *result is set to its value.
+ */
+
+LOCAL(boolean)
+jt_read_integer (const char ** strptr, JDIMENSION * result)
+{
+  const char * ptr = *strptr;
+  JDIMENSION val = 0;
+
+  for (; isdigit(*ptr); ptr++) {
+    val = val * 10 + (JDIMENSION) (*ptr - '0');
+  }
+  *result = val;
+  if (ptr == *strptr)
+    return FALSE;       /* oops, no digits */
+  *strptr = ptr;
+  return TRUE;
+}
+
+
+/* Parse a crop specification (written in X11 geometry style).
+ * The routine returns TRUE if the spec string is valid, FALSE if not.
+ *
+ * The crop spec string should have the format
+ *  <width>[f]x<height>[f]{+-}<xoffset>{+-}<yoffset>
+ * where width, height, xoffset, and yoffset are unsigned integers.
+ * Each of the elements can be omitted to indicate a default value.
+ * (A weakness of this style is that it is not possible to omit xoffset
+ * while specifying yoffset, since they look alike.)
+ *
+ * This code is loosely based on XParseGeometry from the X11 distribution.
+ */
+
+GLOBAL(boolean)
+jtransform_parse_crop_spec (jpeg_transform_info *info, const char *spec)
+{
+  info->crop = FALSE;
+  info->crop_width_set = JCROP_UNSET;
+  info->crop_height_set = JCROP_UNSET;
+  info->crop_xoffset_set = JCROP_UNSET;
+  info->crop_yoffset_set = JCROP_UNSET;
+
+  if (isdigit(*spec)) {
+    /* fetch width */
+    if (! jt_read_integer(&spec, &info->crop_width))
+      return FALSE;
+    if (*spec == 'f' || *spec == 'F') {
+      spec++;
+      info->crop_width_set = JCROP_FORCE;
+    } else
+      info->crop_width_set = JCROP_POS;
+  }
+  if (*spec == 'x' || *spec == 'X') {
+    /* fetch height */
+    spec++;
+    if (! jt_read_integer(&spec, &info->crop_height))
+      return FALSE;
+    if (*spec == 'f' || *spec == 'F') {
+      spec++;
+      info->crop_height_set = JCROP_FORCE;
+    } else
+      info->crop_height_set = JCROP_POS;
+  }
+  if (*spec == '+' || *spec == '-') {
+    /* fetch xoffset */
+    info->crop_xoffset_set = (*spec == '-') ? JCROP_NEG : JCROP_POS;
+    spec++;
+    if (! jt_read_integer(&spec, &info->crop_xoffset))
+      return FALSE;
+  }
+  if (*spec == '+' || *spec == '-') {
+    /* fetch yoffset */
+    info->crop_yoffset_set = (*spec == '-') ? JCROP_NEG : JCROP_POS;
+    spec++;
+    if (! jt_read_integer(&spec, &info->crop_yoffset))
+      return FALSE;
+  }
+  /* We had better have gotten to the end of the string. */
+  if (*spec != '\0')
+    return FALSE;
+  info->crop = TRUE;
+  return TRUE;
+}
+
+
+/* Trim off any partial iMCUs on the indicated destination edge */
+
+LOCAL(void)
+trim_right_edge (jpeg_transform_info *info, JDIMENSION full_width)
+{
+  JDIMENSION MCU_cols;
+
+  MCU_cols = info->output_width / info->iMCU_sample_width;
+  if (MCU_cols > 0 && info->x_crop_offset + MCU_cols ==
+      full_width / info->iMCU_sample_width)
+    info->output_width = MCU_cols * info->iMCU_sample_width;
+}
+
+LOCAL(void)
+trim_bottom_edge (jpeg_transform_info *info, JDIMENSION full_height)
+{
+  JDIMENSION MCU_rows;
+
+  MCU_rows = info->output_height / info->iMCU_sample_height;
+  if (MCU_rows > 0 && info->y_crop_offset + MCU_rows ==
+      full_height / info->iMCU_sample_height)
+    info->output_height = MCU_rows * info->iMCU_sample_height;
+}
+
+
+/* Request any required workspace.
+ *
+ * This routine figures out the size that the output image will be
+ * (which implies that all the transform parameters must be set before
+ * it is called).
+ *
+ * We allocate the workspace virtual arrays from the source decompression
+ * object, so that all the arrays (both the original data and the workspace)
+ * will be taken into account while making memory management decisions.
+ * Hence, this routine must be called after jpeg_read_header (which reads
+ * the image dimensions) and before jpeg_read_coefficients (which realizes
+ * the source's virtual arrays).
+ *
+ * This function returns FALSE right away if -perfect is given
+ * and transformation is not perfect.  Otherwise returns TRUE.
+ */
+
+GLOBAL(boolean)
+jtransform_request_workspace (j_decompress_ptr srcinfo,
+                  jpeg_transform_info *info)
+{
+  jvirt_barray_ptr *coef_arrays;
+  boolean need_workspace, transpose_it;
+  jpeg_component_info *compptr;
+  JDIMENSION xoffset, yoffset;
+  JDIMENSION width_in_iMCUs, height_in_iMCUs;
+  JDIMENSION width_in_blocks, height_in_blocks;
+  int ci, h_samp_factor, v_samp_factor;
+
+  /* Determine number of components in output image */
+  if (info->force_grayscale &&
+      srcinfo->jpeg_color_space == JCS_YCbCr &&
+      srcinfo->num_components == 3)
+    /* We'll only process the first component */
+    info->num_components = 1;
+  else
+    /* Process all the components */
+    info->num_components = srcinfo->num_components;
+
+  /* Compute output image dimensions and related values. */
+#if JPEG_LIB_VERSION >= 80
+  jpeg_core_output_dimensions(srcinfo);
+#else
+  srcinfo->output_width = srcinfo->image_width;
+  srcinfo->output_height = srcinfo->image_height;
+#endif
+
+  /* Return right away if -perfect is given and transformation is not perfect.
+   */
+  if (info->perfect) {
+    if (info->num_components == 1) {
+      if (!jtransform_perfect_transform(srcinfo->output_width,
+      srcinfo->output_height,
+      srcinfo->_min_DCT_h_scaled_size,
+      srcinfo->_min_DCT_v_scaled_size,
+      info->transform))
+    return FALSE;
+    } else {
+      if (!jtransform_perfect_transform(srcinfo->output_width,
+      srcinfo->output_height,
+      srcinfo->max_h_samp_factor * srcinfo->_min_DCT_h_scaled_size,
+      srcinfo->max_v_samp_factor * srcinfo->_min_DCT_v_scaled_size,
+      info->transform))
+    return FALSE;
+    }
+  }
+
+  /* If there is only one output component, force the iMCU size to be 1;
+   * else use the source iMCU size.  (This allows us to do the right thing
+   * when reducing color to grayscale, and also provides a handy way of
+   * cleaning up "funny" grayscale images whose sampling factors are not 1x1.)
+   */
+  switch (info->transform) {
+  case JXFORM_TRANSPOSE:
+  case JXFORM_TRANSVERSE:
+  case JXFORM_ROT_90:
+  case JXFORM_ROT_270:
+    info->output_width = srcinfo->output_height;
+    info->output_height = srcinfo->output_width;
+    if (info->num_components == 1) {
+      info->iMCU_sample_width = srcinfo->_min_DCT_v_scaled_size;
+      info->iMCU_sample_height = srcinfo->_min_DCT_h_scaled_size;
+    } else {
+      info->iMCU_sample_width =
+    srcinfo->max_v_samp_factor * srcinfo->_min_DCT_v_scaled_size;
+      info->iMCU_sample_height =
+    srcinfo->max_h_samp_factor * srcinfo->_min_DCT_h_scaled_size;
+    }
+    break;
+  default:
+    info->output_width = srcinfo->output_width;
+    info->output_height = srcinfo->output_height;
+    if (info->num_components == 1) {
+      info->iMCU_sample_width = srcinfo->_min_DCT_h_scaled_size;
+      info->iMCU_sample_height = srcinfo->_min_DCT_v_scaled_size;
+    } else {
+      info->iMCU_sample_width =
+    srcinfo->max_h_samp_factor * srcinfo->_min_DCT_h_scaled_size;
+      info->iMCU_sample_height =
+    srcinfo->max_v_samp_factor * srcinfo->_min_DCT_v_scaled_size;
+    }
+    break;
+  }
+
+  /* If cropping has been requested, compute the crop area's position and
+   * dimensions, ensuring that its upper left corner falls at an iMCU boundary.
+   */
+  if (info->crop) {
+    /* Insert default values for unset crop parameters */
+    if (info->crop_xoffset_set == JCROP_UNSET)
+      info->crop_xoffset = 0;   /* default to +0 */
+    if (info->crop_yoffset_set == JCROP_UNSET)
+      info->crop_yoffset = 0;   /* default to +0 */
+    if (info->crop_xoffset >= info->output_width ||
+    info->crop_yoffset >= info->output_height)
+      ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
+    if (info->crop_width_set == JCROP_UNSET)
+      info->crop_width = info->output_width - info->crop_xoffset;
+    if (info->crop_height_set == JCROP_UNSET)
+      info->crop_height = info->output_height - info->crop_yoffset;
+    /* Ensure parameters are valid */
+    if (info->crop_width <= 0 || info->crop_width > info->output_width ||
+    info->crop_height <= 0 || info->crop_height > info->output_height ||
+    info->crop_xoffset > info->output_width - info->crop_width ||
+    info->crop_yoffset > info->output_height - info->crop_height)
+      ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
+    /* Convert negative crop offsets into regular offsets */
+    if (info->crop_xoffset_set == JCROP_NEG)
+      xoffset = info->output_width - info->crop_width - info->crop_xoffset;
+    else
+      xoffset = info->crop_xoffset;
+    if (info->crop_yoffset_set == JCROP_NEG)
+      yoffset = info->output_height - info->crop_height - info->crop_yoffset;
+    else
+      yoffset = info->crop_yoffset;
+    /* Now adjust so that upper left corner falls at an iMCU boundary */
+    if (info->crop_width_set == JCROP_FORCE)
+      info->output_width = info->crop_width;
+    else
+      info->output_width =
+        info->crop_width + (xoffset % info->iMCU_sample_width);
+    if (info->crop_height_set == JCROP_FORCE)
+      info->output_height = info->crop_height;
+    else
+      info->output_height =
+        info->crop_height + (yoffset % info->iMCU_sample_height);
+    /* Save x/y offsets measured in iMCUs */
+    info->x_crop_offset = xoffset / info->iMCU_sample_width;
+    info->y_crop_offset = yoffset / info->iMCU_sample_height;
+  } else {
+    info->x_crop_offset = 0;
+    info->y_crop_offset = 0;
+  }
+
+  /* Figure out whether we need workspace arrays,
+   * and if so whether they are transposed relative to the source.
+   */
+  need_workspace = FALSE;
+  transpose_it = FALSE;
+  switch (info->transform) {
+  case JXFORM_NONE:
+    if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
+      need_workspace = TRUE;
+    /* No workspace needed if neither cropping nor transforming */
+    break;
+  case JXFORM_FLIP_H:
+    if (info->trim)
+      trim_right_edge(info, srcinfo->output_width);
+    if (info->y_crop_offset != 0 || info->slow_hflip)
+      need_workspace = TRUE;
+    /* do_flip_h_no_crop doesn't need a workspace array */
+    break;
+  case JXFORM_FLIP_V:
+    if (info->trim)
+      trim_bottom_edge(info, srcinfo->output_height);
+    /* Need workspace arrays having same dimensions as source image. */
+    need_workspace = TRUE;
+    break;
+  case JXFORM_TRANSPOSE:
+    /* transpose does NOT have to trim anything */
+    /* Need workspace arrays having transposed dimensions. */
+    need_workspace = TRUE;
+    transpose_it = TRUE;
+    break;
+  case JXFORM_TRANSVERSE:
+    if (info->trim) {
+      trim_right_edge(info, srcinfo->output_height);
+      trim_bottom_edge(info, srcinfo->output_width);
+    }
+    /* Need workspace arrays having transposed dimensions. */
+    need_workspace = TRUE;
+    transpose_it = TRUE;
+    break;
+  case JXFORM_ROT_90:
+    if (info->trim)
+      trim_right_edge(info, srcinfo->output_height);
+    /* Need workspace arrays having transposed dimensions. */
+    need_workspace = TRUE;
+    transpose_it = TRUE;
+    break;
+  case JXFORM_ROT_180:
+    if (info->trim) {
+      trim_right_edge(info, srcinfo->output_width);
+      trim_bottom_edge(info, srcinfo->output_height);
+    }
+    /* Need workspace arrays having same dimensions as source image. */
+    need_workspace = TRUE;
+    break;
+  case JXFORM_ROT_270:
+    if (info->trim)
+      trim_bottom_edge(info, srcinfo->output_width);
+    /* Need workspace arrays having transposed dimensions. */
+    need_workspace = TRUE;
+    transpose_it = TRUE;
+    break;
+  }
+
+  /* Allocate workspace if needed.
+   * Note that we allocate arrays padded out to the next iMCU boundary,
+   * so that transform routines need not worry about missing edge blocks.
+   */
+  if (need_workspace) {
+    coef_arrays = (jvirt_barray_ptr *)
+      (*srcinfo->mem->alloc_small) ((j_common_ptr) srcinfo, JPOOL_IMAGE,
+        SIZEOF(jvirt_barray_ptr) * info->num_components);
+    width_in_iMCUs = (JDIMENSION)
+      jdiv_round_up((long) info->output_width,
+            (long) info->iMCU_sample_width);
+    height_in_iMCUs = (JDIMENSION)
+      jdiv_round_up((long) info->output_height,
+            (long) info->iMCU_sample_height);
+    for (ci = 0; ci < info->num_components; ci++) {
+      compptr = srcinfo->comp_info + ci;
+      if (info->num_components == 1) {
+    /* we're going to force samp factors to 1x1 in this case */
+    h_samp_factor = v_samp_factor = 1;
+      } else if (transpose_it) {
+    h_samp_factor = compptr->v_samp_factor;
+    v_samp_factor = compptr->h_samp_factor;
+      } else {
+    h_samp_factor = compptr->h_samp_factor;
+    v_samp_factor = compptr->v_samp_factor;
+      }
+      width_in_blocks = width_in_iMCUs * h_samp_factor;
+      height_in_blocks = height_in_iMCUs * v_samp_factor;
+      coef_arrays[ci] = (*srcinfo->mem->request_virt_barray)
+    ((j_common_ptr) srcinfo, JPOOL_IMAGE, FALSE,
+     width_in_blocks, height_in_blocks, (JDIMENSION) v_samp_factor);
+    }
+    info->workspace_coef_arrays = coef_arrays;
+  } else
+    info->workspace_coef_arrays = NULL;
+
+  return TRUE;
+}
+
+
+/* Transpose destination image parameters */
+
+LOCAL(void)
+transpose_critical_parameters (j_compress_ptr dstinfo)
+{
+  int tblno, i, j, ci, itemp;
+  jpeg_component_info *compptr;
+  JQUANT_TBL *qtblptr;
+  JDIMENSION jtemp;
+  UINT16 qtemp;
+
+  /* Transpose image dimensions */
+  jtemp = dstinfo->image_width;
+  dstinfo->image_width = dstinfo->image_height;
+  dstinfo->image_height = jtemp;
+#if JPEG_LIB_VERSION >= 70
+  itemp = dstinfo->min_DCT_h_scaled_size;
+  dstinfo->min_DCT_h_scaled_size = dstinfo->min_DCT_v_scaled_size;
+  dstinfo->min_DCT_v_scaled_size = itemp;
+#endif
+
+  /* Transpose sampling factors */
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    itemp = compptr->h_samp_factor;
+    compptr->h_samp_factor = compptr->v_samp_factor;
+    compptr->v_samp_factor = itemp;
+  }
+
+  /* Transpose quantization tables */
+  for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) {
+    qtblptr = dstinfo->quant_tbl_ptrs[tblno];
+    if (qtblptr != NULL) {
+      for (i = 0; i < DCTSIZE; i++) {
+    for (j = 0; j < i; j++) {
+      qtemp = qtblptr->quantval[i*DCTSIZE+j];
+      qtblptr->quantval[i*DCTSIZE+j] = qtblptr->quantval[j*DCTSIZE+i];
+      qtblptr->quantval[j*DCTSIZE+i] = qtemp;
+    }
+      }
+    }
+  }
+}
+
+
+/* Adjust Exif image parameters.
+ *
+ * We try to adjust the Tags ExifImageWidth and ExifImageHeight if possible.
+ */
+
+LOCAL(void)
+adjust_exif_parameters (JOCTET FAR * data, unsigned int length,
+            JDIMENSION new_width, JDIMENSION new_height)
+{
+  boolean is_motorola; /* Flag for byte order */
+  unsigned int number_of_tags, tagnum;
+  unsigned int firstoffset, offset;
+  JDIMENSION new_value;
+
+  if (length < 12) return; /* Length of an IFD entry */
+
+  /* Discover byte order */
+  if (GETJOCTET(data[0]) == 0x49 && GETJOCTET(data[1]) == 0x49)
+    is_motorola = FALSE;
+  else if (GETJOCTET(data[0]) == 0x4D && GETJOCTET(data[1]) == 0x4D)
+    is_motorola = TRUE;
+  else
+    return;
+
+  /* Check Tag Mark */
+  if (is_motorola) {
+    if (GETJOCTET(data[2]) != 0) return;
+    if (GETJOCTET(data[3]) != 0x2A) return;
+  } else {
+    if (GETJOCTET(data[3]) != 0) return;
+    if (GETJOCTET(data[2]) != 0x2A) return;
+  }
+
+  /* Get first IFD offset (offset to IFD0) */
+  if (is_motorola) {
+    if (GETJOCTET(data[4]) != 0) return;
+    if (GETJOCTET(data[5]) != 0) return;
+    firstoffset = GETJOCTET(data[6]);
+    firstoffset <<= 8;
+    firstoffset += GETJOCTET(data[7]);
+  } else {
+    if (GETJOCTET(data[7]) != 0) return;
+    if (GETJOCTET(data[6]) != 0) return;
+    firstoffset = GETJOCTET(data[5]);
+    firstoffset <<= 8;
+    firstoffset += GETJOCTET(data[4]);
+  }
+  if (firstoffset > length - 2) return; /* check end of data segment */
+
+  /* Get the number of directory entries contained in this IFD */
+  if (is_motorola) {
+    number_of_tags = GETJOCTET(data[firstoffset]);
+    number_of_tags <<= 8;
+    number_of_tags += GETJOCTET(data[firstoffset+1]);
+  } else {
+    number_of_tags = GETJOCTET(data[firstoffset+1]);
+    number_of_tags <<= 8;
+    number_of_tags += GETJOCTET(data[firstoffset]);
+  }
+  if (number_of_tags == 0) return;
+  firstoffset += 2;
+
+  /* Search for ExifSubIFD offset Tag in IFD0 */
+  for (;;) {
+    if (firstoffset > length - 12) return; /* check end of data segment */
+    /* Get Tag number */
+    if (is_motorola) {
+      tagnum = GETJOCTET(data[firstoffset]);
+      tagnum <<= 8;
+      tagnum += GETJOCTET(data[firstoffset+1]);
+    } else {
+      tagnum = GETJOCTET(data[firstoffset+1]);
+      tagnum <<= 8;
+      tagnum += GETJOCTET(data[firstoffset]);
+    }
+    if (tagnum == 0x8769) break; /* found ExifSubIFD offset Tag */
+    if (--number_of_tags == 0) return;
+    firstoffset += 12;
+  }
+
+  /* Get the ExifSubIFD offset */
+  if (is_motorola) {
+    if (GETJOCTET(data[firstoffset+8]) != 0) return;
+    if (GETJOCTET(data[firstoffset+9]) != 0) return;
+    offset = GETJOCTET(data[firstoffset+10]);
+    offset <<= 8;
+    offset += GETJOCTET(data[firstoffset+11]);
+  } else {
+    if (GETJOCTET(data[firstoffset+11]) != 0) return;
+    if (GETJOCTET(data[firstoffset+10]) != 0) return;
+    offset = GETJOCTET(data[firstoffset+9]);
+    offset <<= 8;
+    offset += GETJOCTET(data[firstoffset+8]);
+  }
+  if (offset > length - 2) return; /* check end of data segment */
+
+  /* Get the number of directory entries contained in this SubIFD */
+  if (is_motorola) {
+    number_of_tags = GETJOCTET(data[offset]);
+    number_of_tags <<= 8;
+    number_of_tags += GETJOCTET(data[offset+1]);
+  } else {
+    number_of_tags = GETJOCTET(data[offset+1]);
+    number_of_tags <<= 8;
+    number_of_tags += GETJOCTET(data[offset]);
+  }
+  if (number_of_tags < 2) return;
+  offset += 2;
+
+  /* Search for ExifImageWidth and ExifImageHeight Tags in this SubIFD */
+  do {
+    if (offset > length - 12) return; /* check end of data segment */
+    /* Get Tag number */
+    if (is_motorola) {
+      tagnum = GETJOCTET(data[offset]);
+      tagnum <<= 8;
+      tagnum += GETJOCTET(data[offset+1]);
+    } else {
+      tagnum = GETJOCTET(data[offset+1]);
+      tagnum <<= 8;
+      tagnum += GETJOCTET(data[offset]);
+    }
+    if (tagnum == 0xA002 || tagnum == 0xA003) {
+      if (tagnum == 0xA002)
+    new_value = new_width; /* ExifImageWidth Tag */
+      else
+    new_value = new_height; /* ExifImageHeight Tag */
+      if (is_motorola) {
+    data[offset+2] = 0; /* Format = unsigned long (4 octets) */
+    data[offset+3] = 4;
+    data[offset+4] = 0; /* Number Of Components = 1 */
+    data[offset+5] = 0;
+    data[offset+6] = 0;
+    data[offset+7] = 1;
+    data[offset+8] = 0;
+    data[offset+9] = 0;
+    data[offset+10] = (JOCTET)((new_value >> 8) & 0xFF);
+    data[offset+11] = (JOCTET)(new_value & 0xFF);
+      } else {
+    data[offset+2] = 4; /* Format = unsigned long (4 octets) */
+    data[offset+3] = 0;
+    data[offset+4] = 1; /* Number Of Components = 1 */
+    data[offset+5] = 0;
+    data[offset+6] = 0;
+    data[offset+7] = 0;
+    data[offset+8] = (JOCTET)(new_value & 0xFF);
+    data[offset+9] = (JOCTET)((new_value >> 8) & 0xFF);
+    data[offset+10] = 0;
+    data[offset+11] = 0;
+      }
+    }
+    offset += 12;
+  } while (--number_of_tags);
+}
+
+
+/* Adjust output image parameters as needed.
+ *
+ * This must be called after jpeg_copy_critical_parameters()
+ * and before jpeg_write_coefficients().
+ *
+ * The return value is the set of virtual coefficient arrays to be written
+ * (either the ones allocated by jtransform_request_workspace, or the
+ * original source data arrays).  The caller will need to pass this value
+ * to jpeg_write_coefficients().
+ */
+
+GLOBAL(jvirt_barray_ptr *)
+jtransform_adjust_parameters (j_decompress_ptr srcinfo,
+                  j_compress_ptr dstinfo,
+                  jvirt_barray_ptr *src_coef_arrays,
+                  jpeg_transform_info *info)
+{
+  /* If force-to-grayscale is requested, adjust destination parameters */
+  if (info->force_grayscale) {
+    /* First, ensure we have YCbCr or grayscale data, and that the source's
+     * Y channel is full resolution.  (No reasonable person would make Y
+     * be less than full resolution, so actually coping with that case
+     * isn't worth extra code space.  But we check it to avoid crashing.)
+     */
+    if (((dstinfo->jpeg_color_space == JCS_YCbCr &&
+      dstinfo->num_components == 3) ||
+     (dstinfo->jpeg_color_space == JCS_GRAYSCALE &&
+      dstinfo->num_components == 1)) &&
+    srcinfo->comp_info[0].h_samp_factor == srcinfo->max_h_samp_factor &&
+    srcinfo->comp_info[0].v_samp_factor == srcinfo->max_v_samp_factor) {
+      /* We use jpeg_set_colorspace to make sure subsidiary settings get fixed
+       * properly.  Among other things, it sets the target h_samp_factor &
+       * v_samp_factor to 1, which typically won't match the source.
+       * We have to preserve the source's quantization table number, however.
+       */
+      int sv_quant_tbl_no = dstinfo->comp_info[0].quant_tbl_no;
+      jpeg_set_colorspace(dstinfo, JCS_GRAYSCALE);
+      dstinfo->comp_info[0].quant_tbl_no = sv_quant_tbl_no;
+    } else {
+      /* Sorry, can't do it */
+      ERREXIT(dstinfo, JERR_CONVERSION_NOTIMPL);
+    }
+  } else if (info->num_components == 1) {
+    /* For a single-component source, we force the destination sampling factors
+     * to 1x1, with or without force_grayscale.  This is useful because some
+     * decoders choke on grayscale images with other sampling factors.
+     */
+    dstinfo->comp_info[0].h_samp_factor = 1;
+    dstinfo->comp_info[0].v_samp_factor = 1;
+  }
+
+  /* Correct the destination's image dimensions as necessary
+   * for rotate/flip, resize, and crop operations.
+   */
+#if JPEG_LIB_VERSION >= 70
+  dstinfo->jpeg_width = info->output_width;
+  dstinfo->jpeg_height = info->output_height;
+#endif
+
+  /* Transpose destination image parameters */
+  switch (info->transform) {
+  case JXFORM_TRANSPOSE:
+  case JXFORM_TRANSVERSE:
+  case JXFORM_ROT_90:
+  case JXFORM_ROT_270:
+#if JPEG_LIB_VERSION < 70
+    dstinfo->image_width = info->output_height;
+    dstinfo->image_height = info->output_width;
+#endif
+    transpose_critical_parameters(dstinfo);
+    break;
+  default:
+#if JPEG_LIB_VERSION < 70
+    dstinfo->image_width = info->output_width;
+    dstinfo->image_height = info->output_height;
+#endif
+    break;
+  }
+
+  /* Adjust Exif properties */
+  if (srcinfo->marker_list != NULL &&
+      srcinfo->marker_list->marker == JPEG_APP0+1 &&
+      srcinfo->marker_list->data_length >= 6 &&
+      GETJOCTET(srcinfo->marker_list->data[0]) == 0x45 &&
+      GETJOCTET(srcinfo->marker_list->data[1]) == 0x78 &&
+      GETJOCTET(srcinfo->marker_list->data[2]) == 0x69 &&
+      GETJOCTET(srcinfo->marker_list->data[3]) == 0x66 &&
+      GETJOCTET(srcinfo->marker_list->data[4]) == 0 &&
+      GETJOCTET(srcinfo->marker_list->data[5]) == 0) {
+    /* Suppress output of JFIF marker */
+    dstinfo->write_JFIF_header = FALSE;
+#if JPEG_LIB_VERSION >= 70
+    /* Adjust Exif image parameters */
+    if (dstinfo->jpeg_width != srcinfo->image_width ||
+    dstinfo->jpeg_height != srcinfo->image_height)
+      /* Align data segment to start of TIFF structure for parsing */
+      adjust_exif_parameters(srcinfo->marker_list->data + 6,
+    srcinfo->marker_list->data_length - 6,
+    dstinfo->jpeg_width, dstinfo->jpeg_height);
+#endif
+  }
+
+  /* Return the appropriate output data set */
+  if (info->workspace_coef_arrays != NULL)
+    return info->workspace_coef_arrays;
+  return src_coef_arrays;
+}
+
+
+/* Execute the actual transformation, if any.
+ *
+ * This must be called *after* jpeg_write_coefficients, because it depends
+ * on jpeg_write_coefficients to have computed subsidiary values such as
+ * the per-component width and height fields in the destination object.
+ *
+ * Note that some transformations will modify the source data arrays!
+ */
+
+GLOBAL(void)
+jtransform_execute_transform (j_decompress_ptr srcinfo,
+                  j_compress_ptr dstinfo,
+                  jvirt_barray_ptr *src_coef_arrays,
+                  jpeg_transform_info *info)
+{
+  jvirt_barray_ptr *dst_coef_arrays = info->workspace_coef_arrays;
+
+  /* Note: conditions tested here should match those in switch statement
+   * in jtransform_request_workspace()
+   */
+  switch (info->transform) {
+  case JXFORM_NONE:
+    if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
+      do_crop(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+          src_coef_arrays, dst_coef_arrays);
+    break;
+  case JXFORM_FLIP_H:
+    if (info->y_crop_offset != 0 || info->slow_hflip)
+      do_flip_h(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+        src_coef_arrays, dst_coef_arrays);
+    else
+      do_flip_h_no_crop(srcinfo, dstinfo, info->x_crop_offset,
+            src_coef_arrays);
+    break;
+  case JXFORM_FLIP_V:
+    do_flip_v(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+          src_coef_arrays, dst_coef_arrays);
+    break;
+  case JXFORM_TRANSPOSE:
+    do_transpose(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+         src_coef_arrays, dst_coef_arrays);
+    break;
+  case JXFORM_TRANSVERSE:
+    do_transverse(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+          src_coef_arrays, dst_coef_arrays);
+    break;
+  case JXFORM_ROT_90:
+    do_rot_90(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+          src_coef_arrays, dst_coef_arrays);
+    break;
+  case JXFORM_ROT_180:
+    do_rot_180(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+           src_coef_arrays, dst_coef_arrays);
+    break;
+  case JXFORM_ROT_270:
+    do_rot_270(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+           src_coef_arrays, dst_coef_arrays);
+    break;
+  }
+}
+
+/* jtransform_perfect_transform
+ *
+ * Determine whether lossless transformation is perfectly
+ * possible for a specified image and transformation.
+ *
+ * Inputs:
+ *   image_width, image_height: source image dimensions.
+ *   MCU_width, MCU_height: pixel dimensions of MCU.
+ *   transform: transformation identifier.
+ * Parameter sources from initialized jpeg_struct
+ * (after reading source header):
+ *   image_width = cinfo.image_width
+ *   image_height = cinfo.image_height
+ *   MCU_width = cinfo.max_h_samp_factor * cinfo.block_size
+ *   MCU_height = cinfo.max_v_samp_factor * cinfo.block_size
+ * Result:
+ *   TRUE = perfect transformation possible
+ *   FALSE = perfect transformation not possible
+ *           (may use custom action then)
+ */
+
+GLOBAL(boolean)
+jtransform_perfect_transform(JDIMENSION image_width, JDIMENSION image_height,
+                 int MCU_width, int MCU_height,
+                 JXFORM_CODE transform)
+{
+  boolean result = TRUE; /* initialize TRUE */
+
+  switch (transform) {
+  case JXFORM_FLIP_H:
+  case JXFORM_ROT_270:
+    if (image_width % (JDIMENSION) MCU_width)
+      result = FALSE;
+    break;
+  case JXFORM_FLIP_V:
+  case JXFORM_ROT_90:
+    if (image_height % (JDIMENSION) MCU_height)
+      result = FALSE;
+    break;
+  case JXFORM_TRANSVERSE:
+  case JXFORM_ROT_180:
+    if (image_width % (JDIMENSION) MCU_width)
+      result = FALSE;
+    if (image_height % (JDIMENSION) MCU_height)
+      result = FALSE;
+    break;
+  default:
+    break;
+  }
+
+  return result;
+}
+
+#endif /* TRANSFORMS_SUPPORTED */
+
+
+/* Setup decompression object to save desired markers in memory.
+ * This must be called before jpeg_read_header() to have the desired effect.
+ */
+
+GLOBAL(void)
+jcopy_markers_setup (j_decompress_ptr srcinfo, JCOPY_OPTION option)
+{
+#ifdef SAVE_MARKERS_SUPPORTED
+  int m;
+
+  /* Save comments except under NONE option */
+  if (option != JCOPYOPT_NONE) {
+    jpeg_save_markers(srcinfo, JPEG_COM, 0xFFFF);
+  }
+  /* Save all types of APPn markers iff ALL option */
+  if (option == JCOPYOPT_ALL) {
+    for (m = 0; m < 16; m++)
+      jpeg_save_markers(srcinfo, JPEG_APP0 + m, 0xFFFF);
+  }
+#endif /* SAVE_MARKERS_SUPPORTED */
+}
+
+/* Copy markers saved in the given source object to the destination object.
+ * This should be called just after jpeg_start_compress() or
+ * jpeg_write_coefficients().
+ * Note that those routines will have written the SOI, and also the
+ * JFIF APP0 or Adobe APP14 markers if selected.
+ */
+
+GLOBAL(void)
+jcopy_markers_execute (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+               JCOPY_OPTION option)
+{
+  jpeg_saved_marker_ptr marker;
+
+  /* In the current implementation, we don't actually need to examine the
+   * option flag here; we just copy everything that got saved.
+   * But to avoid confusion, we do not output JFIF and Adobe APP14 markers
+   * if the encoder library already wrote one.
+   */
+  for (marker = srcinfo->marker_list; marker != NULL; marker = marker->next) {
+    if (dstinfo->write_JFIF_header &&
+    marker->marker == JPEG_APP0 &&
+    marker->data_length >= 5 &&
+    GETJOCTET(marker->data[0]) == 0x4A &&
+    GETJOCTET(marker->data[1]) == 0x46 &&
+    GETJOCTET(marker->data[2]) == 0x49 &&
+    GETJOCTET(marker->data[3]) == 0x46 &&
+    GETJOCTET(marker->data[4]) == 0)
+      continue;         /* reject duplicate JFIF */
+    if (dstinfo->write_Adobe_marker &&
+    marker->marker == JPEG_APP0+14 &&
+    marker->data_length >= 5 &&
+    GETJOCTET(marker->data[0]) == 0x41 &&
+    GETJOCTET(marker->data[1]) == 0x64 &&
+    GETJOCTET(marker->data[2]) == 0x6F &&
+    GETJOCTET(marker->data[3]) == 0x62 &&
+    GETJOCTET(marker->data[4]) == 0x65)
+      continue;         /* reject duplicate Adobe */
+#ifdef NEED_FAR_POINTERS
+    /* We could use jpeg_write_marker if the data weren't FAR... */
+    {
+      unsigned int i;
+      jpeg_write_m_header(dstinfo, marker->marker, marker->data_length);
+      for (i = 0; i < marker->data_length; i++)
+    jpeg_write_m_byte(dstinfo, marker->data[i]);
+    }
+#else
+    jpeg_write_marker(dstinfo, marker->marker,
+              marker->data, marker->data_length);
+#endif
+  }
+}
diff --git a/vcl/source/filter/jpeg/transupp.h b/vcl/source/filter/jpeg/transupp.h
new file mode 100644
index 000000000000..69bf46f876af
--- /dev/null
+++ b/vcl/source/filter/jpeg/transupp.h
@@ -0,0 +1,220 @@
+/*
+ * transupp.h
+ *
+ * Copyright (C) 1997-2011, Thomas G. Lane, Guido Vollbeding.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains declarations for image transformation routines and
+ * other utility code used by the jpegtran sample application.  These are
+ * NOT part of the core JPEG library.  But we keep these routines separate
+ * from jpegtran.c to ease the task of maintaining jpegtran-like programs
+ * that have other user interfaces.
+ *
+ * NOTE: all the routines declared here have very specific requirements
+ * about when they are to be executed during the reading and writing of the
+ * source and destination files.  See the comments in transupp.c, or see
+ * jpegtran.c for an example of correct usage.
+ */
+
+/* If you happen not to want the image transform support, disable it here */
+#ifndef TRANSFORMS_SUPPORTED
+#define TRANSFORMS_SUPPORTED 1      /* 0 disables transform code */
+#endif
+
+/*
+ * Although rotating and flipping data expressed as DCT coefficients is not
+ * hard, there is an asymmetry in the JPEG format specification for images
+ * whose dimensions aren't multiples of the iMCU size.  The right and bottom
+ * image edges are padded out to the next iMCU boundary with junk data; but
+ * no padding is possible at the top and left edges.  If we were to flip
+ * the whole image including the pad data, then pad garbage would become
+ * visible at the top and/or left, and real pixels would disappear into the
+ * pad margins --- perhaps permanently, since encoders & decoders may not
+ * bother to preserve DCT blocks that appear to be completely outside the
+ * nominal image area.  So, we have to exclude any partial iMCUs from the
+ * basic transformation.
+ *
+ * Transpose is the only transformation that can handle partial iMCUs at the
+ * right and bottom edges completely cleanly.  flip_h can flip partial iMCUs
+ * at the bottom, but leaves any partial iMCUs at the right edge untouched.
+ * Similarly flip_v leaves any partial iMCUs at the bottom edge untouched.
+ * The other transforms are defined as combinations of these basic transforms
+ * and process edge blocks in a way that preserves the equivalence.
+ *
+ * The "trim" option causes untransformable partial iMCUs to be dropped;
+ * this is not strictly lossless, but it usually gives the best-looking
+ * result for odd-size images.  Note that when this option is active,
+ * the expected mathematical equivalences between the transforms may not hold.
+ * (For example, -rot 270 -trim trims only the bottom edge, but -rot 90 -trim
+ * followed by -rot 180 -trim trims both edges.)
+ *
+ * We also offer a lossless-crop option, which discards data outside a given
+ * image region but losslessly preserves what is inside.  Like the rotate and
+ * flip transforms, lossless crop is restricted by the JPEG format: the upper
+ * left corner of the selected region must fall on an iMCU boundary.  If this
+ * does not hold for the given crop parameters, we silently move the upper left
+ * corner up and/or left to make it so, simultaneously increasing the region
+ * dimensions to keep the lower right crop corner unchanged.  (Thus, the
+ * output image covers at least the requested region, but may cover more.)
+ * The adjustment of the region dimensions may be optionally disabled.
+ *
+ * We also provide a lossless-resize option, which is kind of a lossless-crop
+ * operation in the DCT coefficient block domain - it discards higher-order
+ * coefficients and losslessly preserves lower-order coefficients of a
+ * sub-block.
+ *
+ * Rotate/flip transform, resize, and crop can be requested together in a
+ * single invocation.  The crop is applied last --- that is, the crop region
+ * is specified in terms of the destination image after transform/resize.
+ *
+ * We also offer a "force to grayscale" option, which simply discards the
+ * chrominance channels of a YCbCr image.  This is lossless in the sense that
+ * the luminance channel is preserved exactly.  It's not the same kind of
+ * thing as the rotate/flip transformations, but it's convenient to handle it
+ * as part of this package, mainly because the transformation routines have to
+ * be aware of the option to know how many components to work on.
+ */
+
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jtransform_parse_crop_spec  jTrParCrop
+#define jtransform_request_workspace    jTrRequest
+#define jtransform_adjust_parameters    jTrAdjust
+#define jtransform_execute_transform    jTrExec
+#define jtransform_perfect_transform    jTrPerfect
+#define jcopy_markers_setup     jCMrkSetup
+#define jcopy_markers_execute       jCMrkExec
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+
+/*
+ * Codes for supported types of image transformations.
+ */
+
+typedef enum {
+    JXFORM_NONE,        /* no transformation */
+    JXFORM_FLIP_H,      /* horizontal flip */
+    JXFORM_FLIP_V,      /* vertical flip */
+    JXFORM_TRANSPOSE,   /* transpose across UL-to-LR axis */
+    JXFORM_TRANSVERSE,  /* transpose across UR-to-LL axis */
+    JXFORM_ROT_90,      /* 90-degree clockwise rotation */
+    JXFORM_ROT_180,     /* 180-degree rotation */
+    JXFORM_ROT_270      /* 270-degree clockwise (or 90 ccw) */
+} JXFORM_CODE;
+
+/*
+ * Codes for crop parameters, which can individually be unspecified,
+ * positive or negative for xoffset or yoffset,
+ * positive or forced for width or height.
+ */
+
+typedef enum {
+        JCROP_UNSET,
+        JCROP_POS,
+        JCROP_NEG,
+        JCROP_FORCE
+} JCROP_CODE;
+
+/*
+ * Transform parameters struct.
+ * NB: application must not change any elements of this struct after
+ * calling jtransform_request_workspace.
+ */
+
+typedef struct {
+  /* Options: set by caller */
+  JXFORM_CODE transform;    /* image transform operator */
+  boolean perfect;      /* if TRUE, fail if partial MCUs are requested */
+  boolean trim;         /* if TRUE, trim partial MCUs as needed */
+  boolean force_grayscale;  /* if TRUE, convert color image to grayscale */
+  boolean crop;         /* if TRUE, crop source image */
+  boolean slow_hflip;  /* For best performance, the JXFORM_FLIP_H transform
+                          normally modifies the source coefficients in place.
+                          Setting this to TRUE will instead use a slower,
+                          double-buffered algorithm, which leaves the source
+                          coefficients in tact (necessary if other transformed
+                          images must be generated from the same set of
+                          coefficients. */
+
+  /* Crop parameters: application need not set these unless crop is TRUE.
+   * These can be filled in by jtransform_parse_crop_spec().
+   */
+  JDIMENSION crop_width;    /* Width of selected region */
+  JCROP_CODE crop_width_set;    /* (forced disables adjustment) */
+  JDIMENSION crop_height;   /* Height of selected region */
+  JCROP_CODE crop_height_set;   /* (forced disables adjustment) */
+  JDIMENSION crop_xoffset;  /* X offset of selected region */
+  JCROP_CODE crop_xoffset_set;  /* (negative measures from right edge) */
+  JDIMENSION crop_yoffset;  /* Y offset of selected region */
+  JCROP_CODE crop_yoffset_set;  /* (negative measures from bottom edge) */
+
+  /* Internal workspace: caller should not touch these */
+  int num_components;       /* # of components in workspace */
+  jvirt_barray_ptr * workspace_coef_arrays; /* workspace for transformations */
+  JDIMENSION output_width;  /* cropped destination dimensions */
+  JDIMENSION output_height;
+  JDIMENSION x_crop_offset; /* destination crop offsets measured in iMCUs */
+  JDIMENSION y_crop_offset;
+  int iMCU_sample_width;    /* destination iMCU size */
+  int iMCU_sample_height;
+} jpeg_transform_info;
+
+
+#if TRANSFORMS_SUPPORTED
+
+/* Parse a crop specification (written in X11 geometry style) */
+EXTERN(boolean) jtransform_parse_crop_spec
+    JPP((jpeg_transform_info *info, const char *spec));
+/* Request any required workspace */
+EXTERN(boolean) jtransform_request_workspace
+    JPP((j_decompress_ptr srcinfo, jpeg_transform_info *info));
+/* Adjust output image parameters */
+EXTERN(jvirt_barray_ptr *) jtransform_adjust_parameters
+    JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+         jvirt_barray_ptr *src_coef_arrays,
+         jpeg_transform_info *info));
+/* Execute the actual transformation, if any */
+EXTERN(void) jtransform_execute_transform
+    JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+         jvirt_barray_ptr *src_coef_arrays,
+         jpeg_transform_info *info));
+/* Determine whether lossless transformation is perfectly
+ * possible for a specified image and transformation.
+ */
+EXTERN(boolean) jtransform_perfect_transform
+    JPP((JDIMENSION image_width, JDIMENSION image_height,
+         int MCU_width, int MCU_height,
+         JXFORM_CODE transform));
+
+/* jtransform_execute_transform used to be called
+ * jtransform_execute_transformation, but some compilers complain about
+ * routine names that long.  This macro is here to avoid breaking any
+ * old source code that uses the original name...
+ */
+#define jtransform_execute_transformation   jtransform_execute_transform
+
+#endif /* TRANSFORMS_SUPPORTED */
+
+
+/*
+ * Support for copying optional markers from source to destination file.
+ */
+
+typedef enum {
+    JCOPYOPT_NONE,      /* copy no optional markers */
+    JCOPYOPT_COMMENTS,  /* copy only comment (COM) markers */
+    JCOPYOPT_ALL        /* copy all optional markers */
+} JCOPY_OPTION;
+
+#define JCOPYOPT_DEFAULT  JCOPYOPT_COMMENTS /* recommended default */
+
+/* Setup decompression object to save desired markers in memory */
+EXTERN(void) jcopy_markers_setup
+    JPP((j_decompress_ptr srcinfo, JCOPY_OPTION option));
+/* Copy markers saved in the given source object to the destination object */
+EXTERN(void) jcopy_markers_execute
+    JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+         JCOPY_OPTION option));