FFmpeg  4.0
Data Structures | Macros | Enumerations | Functions | Variables
avf_showwaves.c File Reference

audio to video multimedia filter More...

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  frame_node
 
struct  ShowWavesContext
 

Macros

#define OFFSET(x)   offsetof(ShowWavesContext, x)
 
#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
 

Enumerations

enum  ShowWavesMode {
  MODE_POINT, MODE_LINE, MODE_P2P, MODE_CENTERED_LINE,
  MODE_NB
}
 
enum  ShowWavesScale {
  SCALE_LIN, SCALE_LOG, SCALE_SQRT, SCALE_CBRT,
  SCALE_NB
}
 
enum  ShowWavesDrawMode { DRAW_SCALE, DRAW_FULL, DRAW_NB }
 

Functions

 AVFILTER_DEFINE_CLASS (showwaves)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int get_lin_h (int16_t sample, int height)
 
static int get_lin_h2 (int16_t sample, int height)
 
static int get_log_h (int16_t sample, int height)
 
static int get_log_h2 (int16_t sample, int height)
 
static int get_sqrt_h (int16_t sample, int height)
 
static int get_sqrt_h2 (int16_t sample, int height)
 
static int get_cbrt_h (int16_t sample, int height)
 
static int get_cbrt_h2 (int16_t sample, int height)
 
static void draw_sample_point_rgba_scale (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_point_rgba_full (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_line_rgba_scale (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_line_rgba_full (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_p2p_rgba_scale (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_p2p_rgba_full (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_cline_rgba_scale (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_cline_rgba_full (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_point_gray (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_line_gray (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_p2p_gray (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static void draw_sample_cline_gray (uint8_t *buf, int height, int linesize, int16_t *prev_y, const uint8_t color[4], int h)
 
static int config_output (AVFilterLink *outlink)
 
static int push_frame (AVFilterLink *outlink)
 
static int push_single_pic (AVFilterLink *outlink)
 
static int request_frame (AVFilterLink *outlink)
 
static int alloc_out_frame (ShowWavesContext *showwaves, const int16_t *p, const AVFilterLink *inlink, AVFilterLink *outlink, const AVFrame *in)
 
static av_cold int init (AVFilterContext *ctx)
 

Variables

static const AVOption showwaves_options []
 

Detailed Description

audio to video multimedia filter

Definition in file avf_showwaves.c.

Macro Definition Documentation

◆ OFFSET

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

Definition at line 93 of file avf_showwaves.c.

Referenced by init().

◆ FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 94 of file avf_showwaves.c.

Referenced by init().

Enumeration Type Documentation

◆ ShowWavesMode

enum ShowWavesMode
Enumerator
MODE_POINT 
MODE_LINE 
MODE_P2P 
MODE_CENTERED_LINE 
MODE_NB 

Definition at line 37 of file avf_showwaves.c.

◆ ShowWavesScale

enum ShowWavesScale
Enumerator
SCALE_LIN 
SCALE_LOG 
SCALE_SQRT 
SCALE_CBRT 
SCALE_NB 

Definition at line 45 of file avf_showwaves.c.

◆ ShowWavesDrawMode

enum ShowWavesDrawMode
Enumerator
DRAW_SCALE 
DRAW_FULL 
DRAW_NB 

Definition at line 53 of file avf_showwaves.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( showwaves  )

Referenced by init().

◆ uninit()

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 122 of file avf_showwaves.c.

Referenced by init().

◆ query_formats()

static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 144 of file avf_showwaves.c.

Referenced by init().

◆ get_lin_h()

static int get_lin_h ( int16_t  sample,
int  height 
)
static

Definition at line 175 of file avf_showwaves.c.

Referenced by config_output().

◆ get_lin_h2()

static int get_lin_h2 ( int16_t  sample,
int  height 
)
static

Definition at line 180 of file avf_showwaves.c.

Referenced by config_output().

◆ get_log_h()

static int get_log_h ( int16_t  sample,
int  height 
)
static

Definition at line 185 of file avf_showwaves.c.

Referenced by config_output().

◆ get_log_h2()

static int get_log_h2 ( int16_t  sample,
int  height 
)
static

Definition at line 190 of file avf_showwaves.c.

Referenced by config_output().

◆ get_sqrt_h()

static int get_sqrt_h ( int16_t  sample,
int  height 
)
static

Definition at line 195 of file avf_showwaves.c.

Referenced by config_output().

◆ get_sqrt_h2()

static int get_sqrt_h2 ( int16_t  sample,
int  height 
)
static

Definition at line 200 of file avf_showwaves.c.

Referenced by config_output().

◆ get_cbrt_h()

static int get_cbrt_h ( int16_t  sample,
int  height 
)
static

Definition at line 205 of file avf_showwaves.c.

Referenced by config_output().

◆ get_cbrt_h2()

static int get_cbrt_h2 ( int16_t  sample,
int  height 
)
static

Definition at line 210 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_point_rgba_scale()

static void draw_sample_point_rgba_scale ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 215 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_point_rgba_full()

static void draw_sample_point_rgba_full ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 227 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_line_rgba_scale()

static void draw_sample_line_rgba_scale ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 239 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_line_rgba_full()

static void draw_sample_line_rgba_full ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 256 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_p2p_rgba_scale()

static void draw_sample_p2p_rgba_scale ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 273 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_p2p_rgba_full()

static void draw_sample_p2p_rgba_full ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 299 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_cline_rgba_scale()

static void draw_sample_cline_rgba_scale ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 325 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_cline_rgba_full()

static void draw_sample_cline_rgba_full ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 339 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_point_gray()

static void draw_sample_point_gray ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 354 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_line_gray()

static void draw_sample_line_gray ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 362 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_p2p_gray()

static void draw_sample_p2p_gray ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 375 of file avf_showwaves.c.

Referenced by config_output().

◆ draw_sample_cline_gray()

static void draw_sample_cline_gray ( uint8_t *  buf,
int  height,
int  linesize,
int16_t *  prev_y,
const uint8_t  color[4],
int  h 
)
static

Definition at line 394 of file avf_showwaves.c.

Referenced by config_output().

◆ config_output()

static int config_output ( AVFilterLink *  outlink)
static

Definition at line 405 of file avf_showwaves.c.

Referenced by init().

◆ push_frame()

static int push_frame ( AVFilterLink *  outlink)
inlinestatic

Definition at line 541 of file avf_showwaves.c.

Referenced by init(), push_single_pic(), and request_frame().

◆ push_single_pic()

static int push_single_pic ( AVFilterLink *  outlink)
static

Definition at line 557 of file avf_showwaves.c.

Referenced by request_frame().

◆ request_frame()

static int request_frame ( AVFilterLink *  outlink)
static

Definition at line 614 of file avf_showwaves.c.

Referenced by init().

◆ alloc_out_frame()

static int alloc_out_frame ( ShowWavesContext *  showwaves,
const int16_t *  p,
const AVFilterLink *  inlink,
AVFilterLink *  outlink,
const AVFrame *  in 
)
static

Definition at line 631 of file avf_showwaves.c.

Referenced by init().

◆ init()

static av_cold int init ( AVFilterContext *  ctx)
static

Definition at line 652 of file avf_showwaves.c.

Variable Documentation

◆ showwaves_options

const AVOption showwaves_options[]
static
Initial value:
= {
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
{ "mode", "select display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_POINT}, 0, MODE_NB-1, FLAGS, "mode"},
{ "point", "draw a point for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_POINT}, .flags=FLAGS, .unit="mode"},
{ "line", "draw a line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE}, .flags=FLAGS, .unit="mode"},
{ "p2p", "draw a line between samples", 0, AV_OPT_TYPE_CONST, {.i64=MODE_P2P}, .flags=FLAGS, .unit="mode"},
{ "cline", "draw a centered line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CENTERED_LINE}, .flags=FLAGS, .unit="mode"},
{ "n", "set how many samples to show in the same point", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
{ "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
{ "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"},
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"},
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"},
{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"},
{ "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" },
{ "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"},
{ "full", "draw every pixel for sample directly", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL}, .flags=FLAGS, .unit="draw"},
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
OFFSET
#define OFFSET(x)
Definition: avf_showwaves.c:93
SCALE_SQRT
Definition: avf_showwaves.c:48
AV_OPT_TYPE_INT
Definition: opt.h:223
SCALE_LIN
Definition: avf_showwaves.c:46
MODE_P2P
Definition: avf_showwaves.c:40
MODE_NB
Definition: avf_showwaves.c:42
MODE_POINT
Definition: avf_showwaves.c:38
AV_OPT_TYPE_CONST
Definition: opt.h:232
MODE_CENTERED_LINE
Definition: avf_showwaves.c:41
AV_OPT_TYPE_STRING
Definition: opt.h:227
DRAW_FULL
Definition: avf_showwaves.c:55
SCALE_CBRT
Definition: avf_showwaves.c:49
SCALE_NB
Definition: avf_showwaves.c:50
w
uint8_t w
Definition: llviddspenc.c:38
AV_OPT_TYPE_BOOL
Definition: opt.h:240
n
int n
Definition: avisynth_c.h:684
DRAW_SCALE
Definition: avf_showwaves.c:54
AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
Definition: opt.h:236
MODE_LINE
Definition: avf_showwaves.c:39
AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:233
DRAW_NB
Definition: avf_showwaves.c:56
FLAGS
#define FLAGS
Definition: avf_showwaves.c:94
SCALE_LOG
Definition: avf_showwaves.c:47
mode
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83

Definition at line 96 of file avf_showwaves.c.

Generated on Tue May 22 2018 07:07:12 for FFmpeg by   doxygen 1.8.13