FFmpeg  4.3
Data Structures | Macros | Enumerations | Functions | Variables
af_anequalizer.c File Reference
#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
 

Macro Definition Documentation

◆ FILTER_ORDER

#define FILTER_ORDER   4

Definition at line 31 of file af_anequalizer.c.

◆ OFFSET

#define OFFSET (   x)    offsetof(AudioNEqualizerContext, x)

Definition at line 75 of file af_anequalizer.c.

◆ A

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 76 of file af_anequalizer.c.

◆ V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 77 of file af_anequalizer.c.

◆ F

Definition at line 78 of file af_anequalizer.c.

Enumeration Type Documentation

◆ FilterType

enum FilterType
Enumerator
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 

Definition at line 33 of file af_anequalizer.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( anequalizer  )

◆ draw_curves()

static void draw_curves ( AVFilterContext ctx,
AVFilterLink inlink,
AVFrame out 
)
static

Definition at line 94 of file af_anequalizer.c.

Referenced by config_video(), and process_command().

◆ config_video()

static int config_video ( AVFilterLink outlink)
static

Definition at line 167 of file af_anequalizer.c.

Referenced by init().

◆ init()

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 188 of file af_anequalizer.c.

◆ query_formats()

static int query_formats ( AVFilterContext ctx)
static

Definition at line 231 of file af_anequalizer.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 270 of file af_anequalizer.c.

◆ butterworth_fo_section()

static void butterworth_fo_section ( FoSection S,
double  beta,
double  si,
double  g,
double  g0,
double  D,
double  c0 
)
static

Definition at line 282 of file af_anequalizer.c.

Referenced by butterworth_bp_filter().

◆ butterworth_bp_filter()

static void butterworth_bp_filter ( EqualizatorFilter f,
int  N,
double  w0,
double  wb,
double  G,
double  Gb,
double  G0 
)
static

Definition at line 313 of file af_anequalizer.c.

Referenced by equalizer().

◆ chebyshev1_fo_section()

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

Definition at line 350 of file af_anequalizer.c.

Referenced by chebyshev1_bp_filter().

◆ chebyshev1_bp_filter()

static void chebyshev1_bp_filter ( EqualizatorFilter f,
int  N,
double  w0,
double  wb,
double  G,
double  Gb,
double  G0 
)
static

Definition at line 382 of file af_anequalizer.c.

Referenced by equalizer().

◆ chebyshev2_fo_section()

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

Definition at line 423 of file af_anequalizer.c.

Referenced by chebyshev2_bp_filter().

◆ chebyshev2_bp_filter()

static void chebyshev2_bp_filter ( EqualizatorFilter f,
int  N,
double  w0,
double  wb,
double  G,
double  Gb,
double  G0 
)
static

Definition at line 455 of file af_anequalizer.c.

Referenced by equalizer().

◆ butterworth_compute_bw_gain_db()

static double butterworth_compute_bw_gain_db ( double  gain)
static

Definition at line 496 of file af_anequalizer.c.

Referenced by equalizer().

◆ chebyshev1_compute_bw_gain_db()

static double chebyshev1_compute_bw_gain_db ( double  gain)
static

Definition at line 510 of file af_anequalizer.c.

Referenced by equalizer().

◆ chebyshev2_compute_bw_gain_db()

static double chebyshev2_compute_bw_gain_db ( double  gain)
static

Definition at line 524 of file af_anequalizer.c.

Referenced by equalizer().

◆ hz_2_rad()

static double hz_2_rad ( double  x,
double  fs 
)
inlinestatic

Definition at line 538 of file af_anequalizer.c.

Referenced by equalizer().

◆ equalizer()

static void equalizer ( EqualizatorFilter f,
double  sample_rate 
)
static

Definition at line 543 of file af_anequalizer.c.

Referenced by add_filter(), and process_command().

◆ add_filter()

static int add_filter ( AudioNEqualizerContext s,
AVFilterLink inlink 
)
static

Definition at line 566 of file af_anequalizer.c.

Referenced by config_input().

◆ config_input()

static int config_input ( AVFilterLink inlink)
static

Definition at line 585 of file af_anequalizer.c.

◆ process_command()

static int process_command ( AVFilterContext ctx,
const char *  cmd,
const char *  args,
char *  res,
int  res_len,
int  flags 
)
static

Definition at line 643 of file af_anequalizer.c.

◆ section_process()

static double section_process ( FoSection S,
double  in 
)
inlinestatic

Definition at line 676 of file af_anequalizer.c.

Referenced by process_sample().

◆ process_sample()

static double process_sample ( FoSection s1,
double  in 
)
static

Definition at line 699 of file af_anequalizer.c.

Referenced by filter_frame().

◆ filter_frame()

static int filter_frame ( AVFilterLink inlink,
AVFrame buf 
)
static

Definition at line 712 of file af_anequalizer.c.

Variable Documentation

◆ anequalizer_options

const AVOption anequalizer_options[]
static
Initial value:
= {
{ "params", NULL, OFFSET(args), AV_OPT_TYPE_STRING, {.str=""}, 0, 0, A|F },
{ "curves", "draw frequency response curves", OFFSET(draw_curves), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, V|F },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "hd720"}, 0, 0, V|F },
{ "mgain", "set max gain", OFFSET(mag), AV_OPT_TYPE_DOUBLE, {.dbl=60}, -900, 900, V|F },
{ "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, V|F, "fscale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, V|F, "fscale" },
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, V|F, "fscale" },
{ "colors", "set channels curves colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, V|F },
{ NULL }
}

Definition at line 80 of file af_anequalizer.c.

◆ inputs

const AVFilterPad inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_input,
.filter_frame = filter_frame,
.needs_writable = 1,
},
{ NULL }
}

Definition at line 755 of file af_anequalizer.c.

◆ ff_af_anequalizer

AVFilter ff_af_anequalizer
Initial value:
= {
.name = "anequalizer",
.description = NULL_IF_CONFIG_SMALL("Apply high-order audio parametric multi band equalizer."),
.priv_size = sizeof(AudioNEqualizerContext),
.priv_class = &anequalizer_class,
.init = init,
}

Definition at line 766 of file af_anequalizer.c.

F
#define F
Definition: af_anequalizer.c:78
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
Definition: af_anequalizer.c:712
config_input
static int config_input(AVFilterLink *inlink)
Definition: af_anequalizer.c:585
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:225
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: af_anequalizer.c:231
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
A
#define A
Definition: af_anequalizer.c:76
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_anequalizer.c:270
AudioNEqualizerContext
Definition: af_anequalizer.c:60
NULL
#define NULL
Definition: coverity.c:32
inputs
static const AVFilterPad inputs[]
Definition: af_anequalizer.c:755
AV_OPT_TYPE_IMAGE_SIZE
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:233
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_anequalizer.c:643
AVFILTER_FLAG_DYNAMIC_OUTPUTS
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:111
draw_curves
static void draw_curves(AVFilterContext *ctx, AVFilterLink *inlink, AVFrame *out)
Definition: af_anequalizer.c:94
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:186
V
#define V
Definition: af_anequalizer.c:77
OFFSET
#define OFFSET(x)
Definition: af_anequalizer.c:75
w
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:240
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:564
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:227
init
static av_cold int init(AVFilterContext *ctx)
Definition: af_anequalizer.c:188
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:232