#ifndef BASEFWT2D_H
#define BASEFWT2D_H
/*
BaseFWT2D (abstract)
//derived (redefine transrows, transcols, synthrows, synthcols)
-FWT2D
-mHaar
-mBior53
-mBior97
*/
class vec1D;
class BaseFWT2D
{
public:
BaseFWT2D(const wchar_t* fname);
BaseFWT2D(const wchar_t* fname, const float* tH, unsigned int thL, int thZ,
const float* tG, unsigned int tgL, int tgZ,
const float* H, unsigned int hL, int hZ,
const float* G, unsigned int gL, int gZ);
virtual ~BaseFWT2D();
const wchar_t* status(int& status) const; //get status after constructor
void tracefilters(const wchar_t* fname) const; //trace filters
void init(unsigned int width, unsigned int height); //allocate buffers for transforms status=1
void init(char* data, char* tdata, unsigned int width, unsigned int height); //use supplied buffers status=2
void close(void); //deallocate buffers
inline unsigned int width() const; //data width
inline unsigned int height() const; //data height
inline char* getspec() const; //get spectrum buffer
inline char** getspec2d() const; //get 2D spectrum buffer
inline char* gettspec() const; //get temp fwt buffer
inline unsigned int getJ() const;
inline void setJ(unsigned int j);
//FWT transforms
int trans(unsigned int scales, unsigned int th = 0); //forward transform data in spec buffer
int trans(const char* data, unsigned int scales, unsigned int th = 0); //forward transform DC corrected data
int trans(const unsigned char* data, unsigned int scales, unsigned int th = 0); //forward transform DC uncorrected data
int synth(); //synthesis fwt spectrum in spec buffer
int synth(char* data); //synthesis to DC corrected data buffer
int synth(unsigned char* data); //synthesis to DC uncorrected data buffer
protected:
inline const vec1D& gettH() const;
inline const vec1D& gettG() const;
inline const vec1D& getH2m() const;
inline const vec1D& getG2m() const;
inline const vec1D& getH2m1() const;
inline const vec1D& getG2m1() const;
inline unsigned int getTH() const;
inline char mmxround(float f) const;
inline char mmxroundTH(float f) const;
//virtual functions should be defined in derived ones
virtual void transrows(char** dest, char** sour, unsigned int w, unsigned int h) const = 0; //transform rows
virtual void transcols(char** dest, char** sour, unsigned int w, unsigned int h) const = 0; //transform cols
virtual void synthrows(char** dest, char** sour, unsigned int w, unsigned int h) const = 0; //transform rows
virtual void synthcols(char** dest, char** sour, unsigned int w, unsigned int h) const = 0; //transform cols
private:
int m_status; //constructor status 0 - not initilized,
//1 - class allocated its own buffers, separate for spec and tspec
//2 - class was supplied with buffers for spec and tspec
wchar_t filter[_MAX_PATH]; //filter name
vec1D* tH; //transform filters
vec1D* tG;
vec1D* H; //synthesis filters (never used directly)
vec1D* G;
vec1D* H2m; //even 2m coeffs from H,G filters
vec1D* G2m;
vec1D* H2m1; //odd 2m+1 coeffs from H,G filters
vec1D* G2m1;
unsigned int J; //number of scales
unsigned int TH; //threshold for denoising
unsigned int m_width; //array width
unsigned int m_height; //array height
char* spec; //2*width*height fwt spectrum
char* tspec; //spec + width*height temp fwt buffer
char** spec2d; //spec 2D version with addreses from spec
char** tspec2d; //tspec 2D version with addreses from spec
vec1D* loadfilter(FILE* flt) const; //load filter from file 0-error
void makeHGsynth(void); //create 2m,2m1 filters from H,G -2,-1,0,1,2,3
void mmxmemcpy(char* dest, const char* sour, unsigned int size); //copy mem routine
void sub128(char* dest, const unsigned char* sour, unsigned int size); //dest = sour - 128
void add128(unsigned char *dest, const char* sour, unsigned int size); //dest = sour + 128
//not intended functions
BaseFWT2D(BaseFWT2D& basefwt);
const BaseFWT2D& operator=(const BaseFWT2D& basefwt);
};
/*
filter.flt
size zerooffset
-3 coeff1
-2 coeff2
-1 coeff3
0 coeff4
1 coeff5
2 coeff6
tH
tG
H
G
usage:
FWT2D fwt(L"bior97.flt");
fwt.init(width,height); //init buffers
fwt.trans(data,3,30); //fwt transform from data buffer J=3,TH=30, data is intact after fwt
fwt.synth(data); //fwt synthesis to data buffer
...
... //keep going multiple times transforming and synthesing
...
fwt.close();
*/
inline unsigned int BaseFWT2D::getJ() const
{
return J;
}
inline void BaseFWT2D::setJ(unsigned int j)
{
J = j;
}
inline unsigned int BaseFWT2D::width() const
{
return m_width;
}
inline unsigned int BaseFWT2D::height() const
{
return m_height;
}
inline char* BaseFWT2D::getspec() const
{
return spec;
}
inline char** BaseFWT2D::getspec2d() const
{
return spec2d;
}
inline char* BaseFWT2D::gettspec() const
{
return tspec;
}
inline const vec1D& BaseFWT2D::gettH() const
{
return *tH;
}
inline const vec1D& BaseFWT2D::gettG() const
{
return *tG;
}
inline const vec1D& BaseFWT2D::getH2m() const
{
return *H2m;
}
inline const vec1D& BaseFWT2D::getG2m() const
{
return *G2m;
}
inline const vec1D& BaseFWT2D::getH2m1() const
{
return *H2m1;
}
inline const vec1D& BaseFWT2D::getG2m1() const
{
return *G2m1;
}
inline unsigned int BaseFWT2D::getTH() const
{
return TH;
}
inline char BaseFWT2D::mmxroundTH(float f) const
{
char c[8] = {0, 0, 0, 0, 0, 0, 0, 0};
__m64 *mc = (__m64 *)c;
__m128 mf = _mm_load_ss(&f);
*mc = _mm_cvtps_pi8(mf);
_mm_empty();
int th = TH;
if (th != 0) { //denoise
if (c[0] > 0) {
if (c[0] <= th)
c[0] = 0;
} else {
if (c[0] >= -th)
c[0] = 0;
}
}
//if(c[0]%2) //quantize
// c[0] -= c[0]%2;
return c[0];
}
inline char BaseFWT2D::mmxround(float f) const
{
char c[8] = {0, 0, 0, 0, 0, 0, 0, 0};
__m64 *mc = (__m64 *)c;
__m128 mf = _mm_load_ss(&f);
*mc = _mm_cvtps_pi8(mf);
_mm_empty();
return c[0];
}
#endif
Submit an article or tip