57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#include "eydrle2.hh"
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namespace EydTools {
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void EydRle2::compress(){
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EydLib::BitGroup data;
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EydLib::BitReader bitread(_cellsize, 256); // on lit bit à bit expres
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bitread.open(_input_file);
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EydLib::BitWriter bitwrite(_cellsize,256);
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bitwrite.open(_output_file);
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unsigned char c = (unsigned char)_cellsize;
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bitwrite.writeDirect(&c, 1);
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EydLib::BitCompressorRle2 compressor(_cellsize);
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printf("File opened\n");
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bool done=false;
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std::vector<EydLib::BitGroup> record;
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while(!done){
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try{
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data = bitread.read();
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compressor.append(data);
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if (compressor.hasContent()){
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std::list<EydLib::BitGroup> compressedData = compressor.flush();
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std::list<EydLib::BitGroup>::iterator cmpDataIt;
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for(cmpDataIt = compressedData.begin();
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cmpDataIt != compressedData.end();
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cmpDataIt++){
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bitwrite.write((*cmpDataIt)); // cellule
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}
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}
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} catch (EydLib::eBitReaderEndOfFile& e) {
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done = true;
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// on flushe le contenu de record
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compressor.forceFlush();
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std::list<EydLib::BitGroup> compressedData = compressor.flush();
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std::list<EydLib::BitGroup>::iterator cmpDataIt;
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for(cmpDataIt = compressedData.begin();
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cmpDataIt != compressedData.end();
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cmpDataIt++){
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bitwrite.write((*cmpDataIt)); // cellule
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}
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}
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}
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printf("compression done\n");
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bitread.close();
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bitwrite.close();
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printf("file closed\n");
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printf("Compression ratio : %f\n", compressor.getRatio());
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}
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}
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