FFmpeg
4.3
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#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/ffmath.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "internal.h"
#include "audio.h"
Go to the source code of this file.
Data Structures | |
struct | FoSection |
struct | EqualizatorFilter |
struct | AudioNEqualizerContext |
Macros | |
#define | FILTER_ORDER 4 |
#define | OFFSET(x) offsetof(AudioNEqualizerContext, x) |
#define | A AV_OPT_FLAG_AUDIO_PARAM |
#define | V AV_OPT_FLAG_VIDEO_PARAM |
#define | F AV_OPT_FLAG_FILTERING_PARAM |
Enumerations | |
enum | FilterType { BUTTERWORTH, CHEBYSHEV1, CHEBYSHEV2, NB_TYPES, biquad, equalizer, bass, treble, bandpass, bandreject, allpass, highpass, lowpass, lowshelf, highshelf, WEAK, STRONG, NB_FILTER, LOWPASS, FLAT, AFLAT, CHROMA, COLOR, ACOLOR, XFLAT, YFLAT, NB_FILTERS } |
Functions | |
AVFILTER_DEFINE_CLASS (anequalizer) | |
static void | draw_curves (AVFilterContext *ctx, AVFilterLink *inlink, AVFrame *out) |
static int | config_video (AVFilterLink *outlink) |
static av_cold int | init (AVFilterContext *ctx) |
static int | query_formats (AVFilterContext *ctx) |
static av_cold void | uninit (AVFilterContext *ctx) |
static void | butterworth_fo_section (FoSection *S, double beta, double si, double g, double g0, double D, double c0) |
static void | butterworth_bp_filter (EqualizatorFilter *f, int N, double w0, double wb, double G, double Gb, double G0) |
static void | chebyshev1_fo_section (FoSection *S, double a, double c, double tetta_b, double g0, double si, double b, double D, double c0) |
static void | chebyshev1_bp_filter (EqualizatorFilter *f, int N, double w0, double wb, double G, double Gb, double G0) |
static void | chebyshev2_fo_section (FoSection *S, double a, double c, double tetta_b, double g, double si, double b, double D, double c0) |
static void | chebyshev2_bp_filter (EqualizatorFilter *f, int N, double w0, double wb, double G, double Gb, double G0) |
static double | butterworth_compute_bw_gain_db (double gain) |
static double | chebyshev1_compute_bw_gain_db (double gain) |
static double | chebyshev2_compute_bw_gain_db (double gain) |
static double | hz_2_rad (double x, double fs) |
static void | equalizer (EqualizatorFilter *f, double sample_rate) |
static int | add_filter (AudioNEqualizerContext *s, AVFilterLink *inlink) |
static int | config_input (AVFilterLink *inlink) |
static int | process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags) |
static double | section_process (FoSection *S, double in) |
static double | process_sample (FoSection *s1, double in) |
static int | filter_frame (AVFilterLink *inlink, AVFrame *buf) |
Variables | |
static const AVOption | anequalizer_options [] |
static const AVFilterPad | inputs [] |
AVFilter | ff_af_anequalizer |
#define FILTER_ORDER 4 |
Definition at line 31 of file af_anequalizer.c.
Referenced by draw_curves(), equalizer(), and process_sample().
#define OFFSET | ( | x | ) | offsetof(AudioNEqualizerContext, x) |
Definition at line 75 of file af_anequalizer.c.
#define A AV_OPT_FLAG_AUDIO_PARAM |
Definition at line 76 of file af_anequalizer.c.
#define V AV_OPT_FLAG_VIDEO_PARAM |
Definition at line 77 of file af_anequalizer.c.
#define F AV_OPT_FLAG_FILTERING_PARAM |
Definition at line 78 of file af_anequalizer.c.
enum FilterType |
Definition at line 33 of file af_anequalizer.c.
AVFILTER_DEFINE_CLASS | ( | anequalizer | ) |
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Definition at line 94 of file af_anequalizer.c.
Referenced by config_video(), and process_command().
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Definition at line 167 of file af_anequalizer.c.
Referenced by init().
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Definition at line 188 of file af_anequalizer.c.
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Definition at line 231 of file af_anequalizer.c.
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Definition at line 270 of file af_anequalizer.c.
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Definition at line 282 of file af_anequalizer.c.
Referenced by butterworth_bp_filter().
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Definition at line 313 of file af_anequalizer.c.
Referenced by equalizer().
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Definition at line 350 of file af_anequalizer.c.
Referenced by chebyshev1_bp_filter().
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Definition at line 382 of file af_anequalizer.c.
Referenced by equalizer().
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Definition at line 423 of file af_anequalizer.c.
Referenced by chebyshev2_bp_filter().
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Definition at line 455 of file af_anequalizer.c.
Referenced by equalizer().
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Definition at line 496 of file af_anequalizer.c.
Referenced by equalizer().
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Definition at line 510 of file af_anequalizer.c.
Referenced by equalizer().
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Definition at line 524 of file af_anequalizer.c.
Referenced by equalizer().
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inlinestatic |
Definition at line 538 of file af_anequalizer.c.
Referenced by equalizer().
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Definition at line 543 of file af_anequalizer.c.
Referenced by add_filter(), and process_command().
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Definition at line 566 of file af_anequalizer.c.
Referenced by config_input().
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Definition at line 585 of file af_anequalizer.c.
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Definition at line 643 of file af_anequalizer.c.
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inlinestatic |
Definition at line 676 of file af_anequalizer.c.
Referenced by process_sample().
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Definition at line 699 of file af_anequalizer.c.
Referenced by filter_frame().
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Definition at line 712 of file af_anequalizer.c.
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Definition at line 80 of file af_anequalizer.c.
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Definition at line 755 of file af_anequalizer.c.
AVFilter ff_af_anequalizer |
Definition at line 766 of file af_anequalizer.c.