avf_showwaves.c File Reference

#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 "filters.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 }
enum	ShowWavesFilterMode { FILTER_AVERAGE, FILTER_PEAK, FILTER_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 101 of file avf_showwaves.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 102 of file avf_showwaves.c.

Enumeration Type Documentation

ShowWavesMode

enum ShowWavesMode

Enumerator
MODE_POINT
MODE_LINE
MODE_P2P
MODE_CENTERED_LINE
MODE_NB

Definition at line 38 of file avf_showwaves.c.

ShowWavesScale

enum ShowWavesScale

Enumerator
SCALE_LIN
SCALE_LOG
SCALE_SQRT
SCALE_CBRT
SCALE_NB

Definition at line 46 of file avf_showwaves.c.

ShowWavesDrawMode

enum ShowWavesDrawMode

Enumerator
DRAW_SCALE
DRAW_FULL
DRAW_NB

Definition at line 54 of file avf_showwaves.c.

ShowWavesFilterMode

enum ShowWavesFilterMode

Enumerator
FILTER_AVERAGE
FILTER_PEAK
FILTER_NB

Definition at line 60 of file avf_showwaves.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

showwaves

)

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 130 of file avf_showwaves.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 152 of file avf_showwaves.c.

get_lin_h()

static int get_lin_h ( int16_t  sample, int  height  )

static

Definition at line 183 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 188 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 193 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 198 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 203 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 208 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 213 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 218 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 223 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 235 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 247 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 264 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 281 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 307 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 333 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 347 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 362 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 370 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 383 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 402 of file avf_showwaves.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 413 of file avf_showwaves.c.

push_frame()

static int push_frame ( AVFilterLink *  outlink )

inlinestatic

Definition at line 549 of file avf_showwaves.c.

Referenced by push_single_pic(), and request_frame().

push_single_pic()

static int push_single_pic ( AVFilterLink *  outlink )

static

Definition at line 565 of file avf_showwaves.c.

Referenced by request_frame().

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 635 of file avf_showwaves.c.

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 652 of file avf_showwaves.c.

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 673 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 }
}

Definition at line 104 of file avf_showwaves.c.