#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#if defined(_MSC_VER)
#pragma warning(disable : 4200)
#pragma warning(disable : 4996)
#endif

#ifndef fft_type
#define fft_type double
#endif

#ifndef cplx_type
#define cplx_type double
#endif


typedef struct cplx_t
{
	cplx_type re;
	cplx_type im;
} cplx_data;

typedef struct wave_set* wave_object;

wave_object wave_init(char* wname);

struct wave_set
{
	char wname[50];
	int filtlength;// When all filters are of the same length. [Matlab uses zero-padding to make all filters of the same length]
	int lpd_len;// Default filtlength = lpd_len = lpr_len = hpd_len = hpr_len
	int hpd_len;
	int lpr_len;
	int hpr_len;
	double* lpd;
	double* hpd;
	double* lpr;
	double* hpr;
	double params[0];
};

typedef struct fft_t
{
	fft_type re;
	fft_type im;
} fft_data;

typedef struct fft_set* fft_object;

fft_object fft_init(int N, int sgn);

struct fft_set
{
	int N;
	int sgn;
	int factors[64];
	int lf;
	int lt;
	fft_data twiddle[1];
};

typedef struct fft_real_set* fft_real_object;

fft_real_object fft_real_init(int N, int sgn);

struct fft_real_set
{
	fft_object cobj;
	fft_data twiddle2[1];
};

typedef struct conv_set* conv_object;

conv_object conv_init(int N, int L);

struct conv_set
{
	fft_real_object fobj;
	fft_real_object iobj;
	int ilen1;
	int ilen2;
	int clen;
};

typedef struct wt_set* wt_object;

wt_object wt_init(wave_object wave, char* method, int siglength, int J);

struct wt_set
{
	wave_object wave;
	conv_object cobj;
	char method[10];
	int siglength;// Length of the original signal.
	int outlength;// Length of the output DWT vector
	int lenlength;// Length of the Output Dimension Vector "length"
	int J; // Number of decomposition Levels
	int MaxIter;// Maximum Iterations J <= MaxIter
	int even;// even = 1 if signal is of even length. even = 0 otherwise
	char ext[10];// Type of Extension used - "per" or "sym"
	char cmethod[10]; // Convolution Method - "direct" or "FFT"

	int N; //
	int cfftset;
	int zpad;
	int length[102];
	double* output;
	double params[0];
};

typedef struct wtree_set* wtree_object;

wtree_object wtree_init(wave_object wave, int siglength, int J);

struct wtree_set
{
	wave_object wave;
	conv_object cobj;
	char method[10];
	int siglength;// Length of the original signal.
	int outlength;// Length of the output DWT vector
	int lenlength;// Length of the Output Dimension Vector "length"
	int J; // Number of decomposition Levels
	int MaxIter;// Maximum Iterations J <= MaxIter
	int even;// even = 1 if signal is of even length. even = 0 otherwise
	char ext[10];// Type of Extension used - "per" or "sym"

	int N; //
	int nodes;
	int cfftset;
	int zpad;
	int length[102];
	double* output;
	int* nodelength;
	int* coeflength;
	double params[0];
};

typedef struct wpt_set* wpt_object;

wpt_object wpt_init(wave_object wave, int siglength, int J);

struct wpt_set
{
	wave_object wave;
	conv_object cobj;
	int siglength;// Length of the original signal.
	int outlength;// Length of the output DWT vector
	int lenlength;// Length of the Output Dimension Vector "length"
	int J; // Number of decomposition Levels
	int MaxIter;// Maximum Iterations J <= MaxIter
	int even;// even = 1 if signal is of even length. even = 0 otherwise
	char ext[10];// Type of Extension used - "per" or "sym"
	char entropy[20];
	double eparam;

	int N; //
	int nodes;
	int length[102];
	double* output;
	double* costvalues;
	double* basisvector;
	int* nodeindex;
	int* numnodeslevel;
	int* coeflength;
	double params[0];
};


typedef struct cwt_set* cwt_object;

cwt_object cwt_init(char* wave, double param, int siglength, double dt, int J);

struct cwt_set
{
	char wave[10];// Wavelet - morl/morlet,paul,dog/dgauss
	int siglength;// Length of Input Data
	int J;// Total Number of Scales
	double s0;// Smallest scale. It depends on the sampling rate. s0 <= 2 * dt for most wavelets
	double dt;// Sampling Rate
	double dj;// Separation between scales. eg., scale = s0 * 2 ^ ( [0:N-1] *dj ) or scale = s0 *[0:N-1] * dj
	char type[10];// Scale Type - Power or Linear
	int pow;// Base of Power in case type = pow. Typical value is pow = 2
	int sflag;
	int pflag;
	int npad;
	int mother;
	double m;// Wavelet parameter param
	double smean;// Input Signal mean

	cplx_data* output;
	double* scale;
	double* period;
	double* coi;
	double params[0];
};

void dwt(wt_object wt, double* inp);
void idwt(wt_object wt, double* dwtop);
void wtree(wtree_object wt, double* inp);
void dwpt(wpt_object wt, double* inp);
void idwpt(wpt_object wt, double* dwtop);
void swt(wt_object wt, double* inp);
void iswt(wt_object wt, double* swtop);
void modwt(wt_object wt, double* inp);
void imodwt(wt_object wt, double* dwtop);
void setDWTExtension(wt_object wt, char* extension);
void setWTREEExtension(wtree_object wt, char* extension);
void setDWPTExtension(wpt_object wt, char* extension);
void setDWPTEntropy(wpt_object wt, char* entropy, double eparam);
void setWTConv(wt_object wt, char* cmethod);
int getWTREENodelength(wtree_object wt, int X);
void getWTREECoeffs(wtree_object wt, int X, int Y, double* coeffs, int N);
int getDWPTNodelength(wpt_object wt, int X);
void getDWPTCoeffs(wpt_object wt, int X, int Y, double* coeffs, int N);
int setCWTScales(cwt_object wt, double s0, double dj, char* type, int power);
void setCWTScaleVector(cwt_object wt, double* scale, int J, double s0, double dj);
void setCWTPadding(cwt_object wt, int pad);
int cwt(cwt_object wt, double* inp);
void icwt(cwt_object wt, double* cwtop);
int getCWTScaleLength(int N);
void wave_summary(wave_object obj);
void wt_summary(wt_object wt);
void wtree_summary(wtree_object wt);
void wpt_summary(wpt_object wt);
void cwt_summary(cwt_object wt);
void wave_free(wave_object object);
void wt_free(wt_object object);
void wtree_free(wtree_object object);
void wpt_free(wpt_object object);
void cwt_free(cwt_object object);


#ifdef __cplusplus
}
#endif