Image Component Library (ICL)
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00001 /******************************************************************** 00002 ** Image Component Library (ICL) ** 00003 ** ** 00004 ** Copyright (C) 2006-2013 CITEC, University of Bielefeld ** 00005 ** Neuroinformatics Group ** 00006 ** Website: www.iclcv.org and ** 00007 ** http://opensource.cit-ec.de/projects/icl ** 00008 ** ** 00009 ** File : ICLIO/src/ICLIO/ImageCompressor.h ** 00010 ** Module : ICLIO ** 00011 ** Authors: Christof Elbrechter ** 00012 ** ** 00013 ** ** 00014 ** GNU LESSER GENERAL PUBLIC LICENSE ** 00015 ** This file may be used under the terms of the GNU Lesser General ** 00016 ** Public License version 3.0 as published by the ** 00017 ** ** 00018 ** Free Software Foundation and appearing in the file LICENSE.GPL ** 00019 ** included in the packaging of this file. Please review the ** 00020 ** following information to ensure the license requirements will ** 00021 ** be met: http://www.gnu.org/licenses/lgpl-3.0.txt ** 00022 ** ** 00023 ** The development of this software was supported by the ** 00024 ** Excellence Cluster EXC 277 Cognitive Interaction Technology. ** 00025 ** The Excellence Cluster EXC 277 is a grant of the Deutsche ** 00026 ** Forschungsgemeinschaft (DFG) in the context of the German ** 00027 ** Excellence Initiative. ** 00028 ** ** 00029 ********************************************************************/ 00030 00031 #pragma once 00032 00033 #include <ICLCore/Img.h> 00034 #include <ICLUtils/Uncopyable.h> 00035 00036 namespace icl{ 00037 namespace io{ 00039 00125 class ImageCompressor : public utils::Uncopyable{ 00126 struct Data; 00127 Data *m_data; 00128 00130 int estimateEncodedBufferSize(const core::ImgBase *image, bool skipMetaData); 00131 00133 int estimateRawDataSize(const core::ImgBase *image, bool skipMetaData); 00134 00135 public: 00137 struct CompressionSpec{ 00138 explicit CompressionSpec(const std::string &mode=std::string(), 00139 const std::string &quality=std::string()):mode(mode),quality(quality){} 00140 std::string mode; 00141 std::string quality; 00142 }; 00143 00144 protected: 00146 struct Header{ 00147 struct Params{ 00148 char magick[4]; 00149 char compressionMode[4]; 00150 icl32s compressionQuality; 00151 icl32s width; 00152 icl32s height; 00153 icl32s roiX; 00154 icl32s roiY; 00155 icl32s roiWidth; 00156 icl32s roiHeight; 00157 icl32s channels; 00158 icl32s colorFormat; 00159 icl32s depth; 00160 icl32s dataLen; 00161 icl32s metaLen; 00162 int64_t timeStamp; 00163 } params; 00164 00165 const icl8u *data; 00166 inline const char *metaBegin() const { return (char*)(data + sizeof(Params)); } 00167 inline const icl8u *imageBegin() const { return (icl8u*)(metaBegin() + params.metaLen); } 00168 inline int imageLen() const { return params.dataLen - sizeof(Params) - params.metaLen; } 00169 inline std::string getMagickCode() const { return std::string(params.magick,params.magick+4); } 00170 inline std::string getCompressionMode() const { return std::string(params.compressionMode,params.compressionMode+4); } 00171 CompressionSpec compressionSpec() const; 00172 void setupImage(core::ImgBase **image); 00173 }; 00174 00175 00176 00178 00179 Header uncompressHeader(const icl8u *compressedData, int len); 00180 00182 Header createHeader(const core::ImgBase *image, bool skipMetaData); 00183 00184 public: 00185 00186 00188 00189 struct CompressedData{ 00191 CompressedData(icl8u *bytes=0,int len=0, float compressionRatio=0, 00192 const CompressionSpec &compression=CompressionSpec()): 00193 bytes(bytes),len(len),compressionRatio(compressionRatio), 00194 compression(compression){} 00195 00197 icl8u *bytes; 00198 00200 int len; 00201 00203 float compressionRatio; 00204 00206 CompressionSpec compression; 00207 }; 00208 00210 ImageCompressor(const CompressionSpec &spec=CompressionSpec("none")); 00211 00213 ~ImageCompressor(); 00214 00216 00226 virtual void setCompression(const CompressionSpec &spec); 00227 00229 virtual CompressionSpec getCompression() const; 00230 00231 00232 00234 00235 utils::Time pickTimeStamp(const icl8u *compressedData); 00236 00238 00239 const CompressedData compress(const core::ImgBase *image, bool skipMetaData=false); 00240 00242 const core::ImgBase *uncompress(const icl8u *compressedData, int len, core::ImgBase **dst=0); 00243 }; 00244 00245 } // namespace io 00246 }