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)
#define	SQR(x)

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

Definition at line 37 of file window_func.h.

SINC

#define SINC

(

x

)

Value:

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

Referenced by fade_gain(), and generate_window_func().

SQR

#define SQR

(

x

)

Value:

((x)*(x))

Referenced by generate_window_func().

Enumeration Type Documentation

WindowFunc

enum WindowFunc

Enumerator
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

generate_window_func()

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

inlinestatic

Definition at line 63 of file window_func.h.

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