计算Psnr的函数以及dll

======================================================================== DYNAMIC LINK LIBRARY : getPsnr ======================================================================== AppWizard has created this getPsnr DLL for you. This file contains a summary of what you will find in each of the files that make up your getPsnr application. getPsnr.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. getPsnr.cpp This is the main DLL source file. getPsnr.h This file contains your DLL exports. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named getPsnr.pch and a precompiled types file named StdAfx.obj. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. /////////////////////////////////////////////////////////////////////////////