window_func.h File Reference

#include <math.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"

Go to the source code of this file.

Macros
#define	WIN_FUNC_OPTION(win_func_opt_name, win_func_offset, flag, default_window_func)
#define	SINC(x)   (!(x)) ? 1 : sin(M_PI * (x))/(M_PI * (x));
#define	SQR(x)   ((x)*(x))

Enumerations
enum	WindowFunc {   WFUNC_RECTANGULAR, WFUNC_HANN, WFUNC_HAMMING, WFUNC_BLACKMAN,   WFUNC_NUTTALL3, WFUNC_MNUTTALL3, WFUNC_NUTTALL, WFUNC_BNUTTALL,   WFUNC_BHARRIS, WFUNC_TUKEY, NB_WFUNC, WFUNC_RECT,   WFUNC_HANNING, WFUNC_HAMMING, WFUNC_BLACKMAN, WFUNC_BARTLETT,   WFUNC_WELCH, WFUNC_FLATTOP, WFUNC_BHARRIS, WFUNC_BNUTTALL,   WFUNC_SINE, WFUNC_NUTTALL, WFUNC_BHANN, WFUNC_LANCZOS,   WFUNC_GAUSS, WFUNC_TUKEY, WFUNC_DOLPH, WFUNC_CAUCHY,   WFUNC_PARZEN, WFUNC_POISSON, WFUNC_BOHMAN, WFUNC_KAISER,   NB_WFUNC }

Functions
static double	get_i0 (double x)
static void	generate_window_func (float *lut, int N, int win_func, float *overlap)

Macro Definition Documentation

WIN_FUNC_OPTION

#define WIN_FUNC_OPTION	(		win_func_opt_name,
			win_func_offset,
			flag,
			default_window_func
	)

Value:

    { win_func_opt_name, "set window function", win_func_offset, AV_OPT_TYPE_INT, {.i64 = default_window_func}, 0, NB_WFUNC-1, flag, "win_func" }, \
        { "rect",     "Rectangular",      0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT},     0, 0, flag, "win_func" }, \
        { "bartlett", "Bartlett",         0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BARTLETT}, 0, 0, flag, "win_func" }, \
        { "hann",     "Hann",             0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING},  0, 0, flag, "win_func" }, \
        { "hanning",  "Hanning",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING},  0, 0, flag, "win_func" }, \
        { "hamming",  "Hamming",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HAMMING},  0, 0, flag, "win_func" }, \
        { "blackman", "Blackman",         0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BLACKMAN}, 0, 0, flag, "win_func" }, \
        { "welch",    "Welch",            0, AV_OPT_TYPE_CONST, {.i64=WFUNC_WELCH},    0, 0, flag, "win_func" }, \
        { "flattop",  "Flat-top",         0, AV_OPT_TYPE_CONST, {.i64=WFUNC_FLATTOP},  0, 0, flag, "win_func" }, \
        { "bharris",  "Blackman-Harris",  0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHARRIS},  0, 0, flag, "win_func" }, \
        { "bnuttall", "Blackman-Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BNUTTALL}, 0, 0, flag, "win_func" }, \
        { "bhann",    "Bartlett-Hann",    0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHANN},    0, 0, flag, "win_func" }, \
        { "sine",     "Sine",             0, AV_OPT_TYPE_CONST, {.i64=WFUNC_SINE},     0, 0, flag, "win_func" }, \
        { "nuttall",  "Nuttall",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_NUTTALL},  0, 0, flag, "win_func" }, \
        { "lanczos",  "Lanczos",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_LANCZOS},  0, 0, flag, "win_func" }, \
        { "gauss",    "Gauss",            0, AV_OPT_TYPE_CONST, {.i64=WFUNC_GAUSS},    0, 0, flag, "win_func" }, \
        { "tukey",    "Tukey",            0, AV_OPT_TYPE_CONST, {.i64=WFUNC_TUKEY},    0, 0, flag, "win_func" }, \
        { "dolph",    "Dolph-Chebyshev",  0, AV_OPT_TYPE_CONST, {.i64=WFUNC_DOLPH},    0, 0, flag, "win_func" }, \
        { "cauchy",   "Cauchy",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY},   0, 0, flag, "win_func" }, \
        { "parzen",   "Parzen",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN},   0, 0, flag, "win_func" }, \
        { "poisson",  "Poisson",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON},  0, 0, flag, "win_func" }, \
        { "bohman",   "Bohman",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN},   0, 0, flag, "win_func" }, \
        { "kaiser",   "Kaiser",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_KAISER},   0, 0, flag, "win_func" }

Definition at line 37 of file window_func.h.

SINC

#define SINC

(

x

)

(!(x)) ? 1 : sin(M_PI * (x))/(M_PI * (x));

SQR

#define SQR

(

x

)

((x)*(x))

Enumeration Type Documentation

WindowFunc

enum WindowFunc

Enumerator
WFUNC_RECTANGULAR
WFUNC_HANN
WFUNC_HAMMING
WFUNC_BLACKMAN
WFUNC_NUTTALL3
WFUNC_MNUTTALL3
WFUNC_NUTTALL
WFUNC_BNUTTALL
WFUNC_BHARRIS
WFUNC_TUKEY
NB_WFUNC
WFUNC_RECT
WFUNC_HANNING
WFUNC_HAMMING
WFUNC_BLACKMAN
WFUNC_BARTLETT
WFUNC_WELCH
WFUNC_FLATTOP
WFUNC_BHARRIS
WFUNC_BNUTTALL
WFUNC_SINE
WFUNC_NUTTALL
WFUNC_BHANN
WFUNC_LANCZOS
WFUNC_GAUSS
WFUNC_TUKEY
WFUNC_DOLPH
WFUNC_CAUCHY
WFUNC_PARZEN
WFUNC_POISSON
WFUNC_BOHMAN
WFUNC_KAISER
NB_WFUNC

Definition at line 29 of file window_func.h.

Function Documentation

get_i0()

static double get_i0 ( double  x )

inlinestatic

Definition at line 62 of file window_func.h.

Referenced by generate_window_func().

generate_window_func()

static void generate_window_func ( float *  lut, int  N, int  win_func, float *  overlap  )

inlinestatic

Definition at line 76 of file window_func.h.

Referenced by config_input(), config_output(), config_props(), ff_opus_psy_init(), and init().