1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef _GIFLZWC_HXX 25 #define _GIFLZWC_HXX 26 27 #ifndef _BMPACC_HXX 28 #include <vcl/bmpacc.hxx> 29 #endif 30 31 // -------------------- 32 // - GIFLZWCompressor - 33 // -------------------- 34 35 class GIFImageDataOutputStream; 36 struct GIFLZWCTreeNode; 37 38 class GIFLZWCompressor 39 { 40 private: 41 42 GIFImageDataOutputStream* pIDOS; 43 GIFLZWCTreeNode* pTable; 44 GIFLZWCTreeNode* pPrefix; 45 sal_uInt16 nDataSize; 46 sal_uInt16 nClearCode; 47 sal_uInt16 nEOICode; 48 sal_uInt16 nTableSize; 49 sal_uInt16 nCodeSize; 50 51 public: 52 53 GIFLZWCompressor(); 54 ~GIFLZWCompressor(); 55 56 void StartCompression( SvStream& rGIF, sal_uInt16 nPixelSize ); 57 void Compress( HPBYTE pSrc, sal_uLong nSize ); 58 void EndCompression(); 59 }; 60 61 #endif // _GIFLZWC_HXX 62