Category Archives: Compression

Techniques, algorithms, libraries, software and everything that is releated to the compression / decompression of data.

Unrelated Framework – Inclusion of ZLib

The Unrelated Framework got support for ziv-lempel compression of data using ZLib. The classes can be compressed in memory, loaded and saved with few rows of code and without limits. For example:

//this works only with resources like images, fonts, sounds, etc...
C_Image *newImage = new C_Image();
newImage->ImportFromFile("test.tga"); //load image from file
newImage->SetFileFormat(UF_FileFormat_Zip(6)); //set a zip file format of 6th level
newImage->SaveToFile("test.img"); //save the zipped resource on file, simple isn't it?

//if you want to load...
newImage->LoadFromFile("test.img"); //the system understands that it was zipped
newImage->SetFileFormat(NULL); //set it NULL if you don't want the zip compression in the future

or

//this can be used for every kind of object

C_Image *newImage= new C_Image();
newImage->ImportFromFile("test.tga"); //load image from file
C_Object_Zip *objZip = new C_Object_Zip(); //init a zip container
objZip->CompressObject(newImage, 6); //compress the image object
objZip->SaveToFile("test.zob"); //save the zipped object on file
delete newImage;

//if you want to load...
objZip->LoadFromFile("test.zob"); //load the zipped object from file
newImage = (C_Image *)objZip->UncompressObject(); //get the uncompressed object
delete objZip; //delete and free the zip object memory

Gianpaolo Ingegneri
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