1 files changed, 173 insertions, 0 deletions
diff --git a/svx/source/gallery2/codec.cxx b/svx/source/gallery2/codec.cxx
new file mode 100644
index 000000000000..7249df9c121f
--- /dev/null
+++ b/svx/source/gallery2/codec.cxx
@@ -0,0 +1,173 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+// MARKER(update_precomp.py): autogen include statement, do not remove
+#include "precompiled_svx.hxx"
+
+#include <tools/stream.hxx>
+#include <tools/zcodec.hxx>
+#include "codec.hxx"
+
+// ----------------
+// - GalleryCodec -
+// ----------------
+
+GalleryCodec::GalleryCodec( SvStream& rIOStm ) :
+    rStm( rIOStm )
+{
+}
+
+// -----------------------------------------------------------------------------
+
+GalleryCodec::~GalleryCodec()
+{
+}
+
+// -----------------------------------------------------------------------------
+
+BOOL GalleryCodec::IsCoded( SvStream& rStm, UINT32& rVersion )
+{
+    const ULONG nPos = rStm.Tell();
+    BOOL        bRet;
+    BYTE        cByte1, cByte2, cByte3, cByte4, cByte5, cByte6;
+
+    rStm >> cByte1 >> cByte2 >> cByte3 >> cByte4 >> cByte5 >> cByte6;
+
+    if ( cByte1 == 'S' && cByte2 == 'V' && cByte3 == 'R' && cByte4 == 'L' && cByte5 == 'E' && ( cByte6 == '1' || cByte6 == '2' ) )
+    {
+        rVersion = ( ( cByte6 == '1' ) ? 1 : 2 );
+        bRet = TRUE;
+    }
+    else
+    {
+        rVersion = 0;
+        bRet = FALSE;
+    }
+
+    rStm.Seek( nPos );
+
+    return bRet;
+}
+
+// -----------------------------------------------------------------------------
+
+void GalleryCodec::Write( SvStream& rStmToWrite )
+{
+    UINT32 nPos, nCompSize;
+
+    rStmToWrite.Seek( STREAM_SEEK_TO_END );
+    const UINT32 nSize = rStmToWrite.Tell();
+    rStmToWrite.Seek( 0UL );
+
+    rStm << 'S' << 'V' << 'R' << 'L' << 'E' << '2';
+    rStm << nSize;
+
+    nPos = rStm.Tell();
+    rStm.SeekRel( 4UL );
+
+    ZCodec aCodec;
+    aCodec.BeginCompression();
+    aCodec.Compress( rStmToWrite, rStm );
+    aCodec.EndCompression();
+
+    nCompSize = rStm.Tell() - nPos - 4UL;
+    rStm.Seek( nPos );
+    rStm << nCompSize;
+    rStm.Seek( STREAM_SEEK_TO_END );
+}
+
+// -----------------------------------------------------------------------------
+
+void GalleryCodec::Read( SvStream& rStmToRead )
+{
+    UINT32 nVersion = 0;
+
+    if( IsCoded( rStm, nVersion ) )
+    {
+        UINT32  nCompressedSize, nUnCompressedSize;
+
+        rStm.SeekRel( 6 );
+        rStm >> nUnCompressedSize >> nCompressedSize;
+
+        // decompress
+        if( 1 == nVersion )
+        {
+            BYTE*   pCompressedBuffer = new BYTE[ nCompressedSize ]; rStm.Read( pCompressedBuffer, nCompressedSize );
+            BYTE*   pInBuf = pCompressedBuffer;
+            BYTE*   pOutBuf = new BYTE[ nUnCompressedSize ];
+            BYTE*   pTmpBuf = pOutBuf;
+            BYTE*   pLast = pOutBuf + nUnCompressedSize - 1;
+            ULONG   nIndex = 0UL, nCountByte, nRunByte;
+            BOOL    bEndDecoding = FALSE;
+
+            do
+            {
+                nCountByte = *pInBuf++;
+
+                if ( !nCountByte )
+                {
+                    nRunByte = *pInBuf++;
+
+                    if ( nRunByte > 2 )
+                    {
+                        // absolutes Fuellen
+                        memcpy( &pTmpBuf[ nIndex ], pInBuf, nRunByte );
+                        pInBuf += nRunByte;
+                        nIndex += nRunByte;
+
+                        // WORD-Alignment beachten
+                        if ( nRunByte & 1 )
+                            pInBuf++;
+                    }
+                    else if ( nRunByte == 1 )   // Ende des Bildes
+                        bEndDecoding = TRUE;
+                }
+                else
+                {
+                    const BYTE cVal = *pInBuf++;
+
+                    memset( &pTmpBuf[ nIndex ], cVal, nCountByte );
+                    nIndex += nCountByte;
+                }
+            }
+            while ( !bEndDecoding && ( pTmpBuf <= pLast ) );
+
+               rStmToRead.Write( pOutBuf, nUnCompressedSize );
+
+            delete[] pOutBuf;
+            delete[] pCompressedBuffer;
+        }
+        else if( 2 == nVersion )
+        {
+            ZCodec aCodec;
+
+            aCodec.BeginCompression();
+            aCodec.Decompress( rStm, rStmToRead );
+            aCodec.EndCompression();
+        }
+    }
+}