FFmpeg
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#include <float.h>
#include <math.h>
#include "libavcodec/avfft.h"
#include "libavutil/audio_fifo.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "audio.h"
#include "filters.h"
#include "video.h"
#include "avfilter.h"
#include "internal.h"
#include "window_func.h"
Go to the source code of this file.
Data Structures | |
struct | ShowFreqsContext |
Macros | |
#define | OFFSET(x) offsetof(ShowFreqsContext, x) |
#define | FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
#define | RE(x, ch) s->fft_data[ch][x].re |
#define | IM(x, ch) s->fft_data[ch][x].im |
#define | M(a, b) (sqrt((a) * (a) + (b) * (b))) |
#define | P(a, b) (atan2((b), (a))) |
Enumerations | |
enum | DataMode { MAGNITUDE, PHASE, DELAY, NB_DATA, D_MAGNITUDE, D_PHASE, NB_DMODES } |
enum | DisplayMode { SINGLE, SEPARATE, NB_DMODES, LINE, BAR, DOT, NB_MODES, COMBINED, SEPARATE, NB_MODES } |
enum | ChannelMode { COMBINED, SEPARATE, NB_CMODES } |
enum | FrequencyScale { FS_LINEAR, FS_LOG, FS_RLOG, NB_FSCALES, F_LINEAR, F_LOG, NB_FSCALES } |
enum | AmplitudeScale { ALINEAR, ALOG, NB_ASCALES, AS_LINEAR, AS_SQRT, AS_CBRT, AS_LOG, NB_ASCALES } |
Functions | |
AVFILTER_DEFINE_CLASS (showfreqs) | |
static int | query_formats (AVFilterContext *ctx) |
static av_cold int | init (AVFilterContext *ctx) |
static int | config_output (AVFilterLink *outlink) |
static void | draw_dot (AVFrame *out, int x, int y, uint8_t fg[4]) |
static int | get_sx (ShowFreqsContext *s, int f) |
static float | get_bsize (ShowFreqsContext *s, int f) |
static void | plot_freq (ShowFreqsContext *s, int ch, double a, int f, uint8_t fg[4], int *prev_y, AVFrame *out, AVFilterLink *outlink) |
static int | plot_freqs (AVFilterLink *inlink, AVFrame *in) |
static int | filter_frame (AVFilterLink *inlink) |
static int | activate (AVFilterContext *ctx) |
static av_cold void | uninit (AVFilterContext *ctx) |
Variables | |
static const AVOption | showfreqs_options [] |
static const AVFilterPad | showfreqs_inputs [] |
static const AVFilterPad | showfreqs_outputs [] |
AVFilter | ff_avf_showfreqs |
#define OFFSET | ( | x | ) | offsetof(ShowFreqsContext, x) |
Definition at line 72 of file avf_showfreqs.c.
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
Definition at line 73 of file avf_showfreqs.c.
Referenced by plot_freqs().
Referenced by plot_freqs().
Referenced by plot_freqs().
enum DataMode |
Enumerator | |
---|---|
MAGNITUDE | |
PHASE | |
DELAY | |
NB_DATA | |
D_MAGNITUDE | |
D_PHASE | |
NB_DMODES |
Definition at line 39 of file avf_showfreqs.c.
enum DisplayMode |
Enumerator | |
---|---|
SINGLE | |
SEPARATE | |
NB_DMODES | |
LINE | |
BAR | |
DOT | |
NB_MODES | |
COMBINED | |
SEPARATE | |
NB_MODES |
Definition at line 40 of file avf_showfreqs.c.
enum ChannelMode |
Enumerator | |
---|---|
COMBINED | |
SEPARATE | |
NB_CMODES |
Definition at line 41 of file avf_showfreqs.c.
enum FrequencyScale |
Enumerator | |
---|---|
FS_LINEAR | |
FS_LOG | |
FS_RLOG | |
NB_FSCALES | |
F_LINEAR | |
F_LOG | |
NB_FSCALES |
Definition at line 42 of file avf_showfreqs.c.
enum AmplitudeScale |
Enumerator | |
---|---|
ALINEAR | |
ALOG | |
NB_ASCALES | |
AS_LINEAR | |
AS_SQRT | |
AS_CBRT | |
AS_LOG | |
NB_ASCALES |
Definition at line 43 of file avf_showfreqs.c.
AVFILTER_DEFINE_CLASS | ( | showfreqs | ) |
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Definition at line 129 of file avf_showfreqs.c.
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Definition at line 160 of file avf_showfreqs.c.
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Definition at line 169 of file avf_showfreqs.c.
Definition at line 242 of file avf_showfreqs.c.
Referenced by plot_freq().
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Definition at line 253 of file avf_showfreqs.c.
Referenced by plot_freq().
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Definition at line 267 of file avf_showfreqs.c.
Referenced by plot_freq().
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inlinestatic |
Definition at line 283 of file avf_showfreqs.c.
Referenced by plot_freqs().
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Definition at line 366 of file avf_showfreqs.c.
Referenced by filter_frame().
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Definition at line 463 of file avf_showfreqs.c.
Referenced by activate().
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Definition at line 491 of file avf_showfreqs.c.
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Definition at line 524 of file avf_showfreqs.c.
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Definition at line 75 of file avf_showfreqs.c.
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Definition at line 542 of file avf_showfreqs.c.
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Definition at line 550 of file avf_showfreqs.c.
AVFilter ff_avf_showfreqs |
Definition at line 559 of file avf_showfreqs.c.